4365 lines
155 KiB
C
4365 lines
155 KiB
C
/*
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* VC-1 and WMV3 decoder
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* Copyright (c) 2006-2007 Konstantin Shishkov
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* Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file libavcodec/vc1.c
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* VC-1 and WMV3 decoder
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*
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*/
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#include "internal.h"
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#include "dsputil.h"
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#include "avcodec.h"
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#include "mpegvideo.h"
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#include "vc1.h"
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#include "vc1data.h"
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#include "vc1acdata.h"
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#include "msmpeg4data.h"
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#include "unary.h"
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#include "simple_idct.h"
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#include "mathops.h"
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#include "vdpau_internal.h"
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#undef NDEBUG
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#include <assert.h>
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#define MB_INTRA_VLC_BITS 9
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#define DC_VLC_BITS 9
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#define AC_VLC_BITS 9
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static const uint16_t table_mb_intra[64][2];
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static const uint16_t vlc_offs[] = {
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0, 520, 552, 616, 1128, 1160, 1224, 1740, 1772, 1836, 1900, 2436,
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2986, 3050, 3610, 4154, 4218, 4746, 5326, 5390, 5902, 6554, 7658, 8620,
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9262, 10202, 10756, 11310, 12228, 15078
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};
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/**
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* Init VC-1 specific tables and VC1Context members
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* @param v The VC1Context to initialize
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* @return Status
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*/
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static int vc1_init_common(VC1Context *v)
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{
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static int done = 0;
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int i = 0;
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static VLC_TYPE vlc_table[15078][2];
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v->hrd_rate = v->hrd_buffer = NULL;
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/* VLC tables */
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if(!done)
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{
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INIT_VLC_STATIC(&ff_vc1_bfraction_vlc, VC1_BFRACTION_VLC_BITS, 23,
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ff_vc1_bfraction_bits, 1, 1,
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ff_vc1_bfraction_codes, 1, 1, 1 << VC1_BFRACTION_VLC_BITS);
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INIT_VLC_STATIC(&ff_vc1_norm2_vlc, VC1_NORM2_VLC_BITS, 4,
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ff_vc1_norm2_bits, 1, 1,
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ff_vc1_norm2_codes, 1, 1, 1 << VC1_NORM2_VLC_BITS);
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INIT_VLC_STATIC(&ff_vc1_norm6_vlc, VC1_NORM6_VLC_BITS, 64,
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ff_vc1_norm6_bits, 1, 1,
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ff_vc1_norm6_codes, 2, 2, 556);
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INIT_VLC_STATIC(&ff_vc1_imode_vlc, VC1_IMODE_VLC_BITS, 7,
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ff_vc1_imode_bits, 1, 1,
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ff_vc1_imode_codes, 1, 1, 1 << VC1_IMODE_VLC_BITS);
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for (i=0; i<3; i++)
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{
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ff_vc1_ttmb_vlc[i].table = &vlc_table[vlc_offs[i*3+0]];
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ff_vc1_ttmb_vlc[i].table_allocated = vlc_offs[i*3+1] - vlc_offs[i*3+0];
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init_vlc(&ff_vc1_ttmb_vlc[i], VC1_TTMB_VLC_BITS, 16,
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ff_vc1_ttmb_bits[i], 1, 1,
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ff_vc1_ttmb_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
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ff_vc1_ttblk_vlc[i].table = &vlc_table[vlc_offs[i*3+1]];
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ff_vc1_ttblk_vlc[i].table_allocated = vlc_offs[i*3+2] - vlc_offs[i*3+1];
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init_vlc(&ff_vc1_ttblk_vlc[i], VC1_TTBLK_VLC_BITS, 8,
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ff_vc1_ttblk_bits[i], 1, 1,
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ff_vc1_ttblk_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
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ff_vc1_subblkpat_vlc[i].table = &vlc_table[vlc_offs[i*3+2]];
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ff_vc1_subblkpat_vlc[i].table_allocated = vlc_offs[i*3+3] - vlc_offs[i*3+2];
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init_vlc(&ff_vc1_subblkpat_vlc[i], VC1_SUBBLKPAT_VLC_BITS, 15,
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ff_vc1_subblkpat_bits[i], 1, 1,
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ff_vc1_subblkpat_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
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}
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for(i=0; i<4; i++)
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{
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ff_vc1_4mv_block_pattern_vlc[i].table = &vlc_table[vlc_offs[i*3+9]];
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ff_vc1_4mv_block_pattern_vlc[i].table_allocated = vlc_offs[i*3+10] - vlc_offs[i*3+9];
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init_vlc(&ff_vc1_4mv_block_pattern_vlc[i], VC1_4MV_BLOCK_PATTERN_VLC_BITS, 16,
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ff_vc1_4mv_block_pattern_bits[i], 1, 1,
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ff_vc1_4mv_block_pattern_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
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ff_vc1_cbpcy_p_vlc[i].table = &vlc_table[vlc_offs[i*3+10]];
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ff_vc1_cbpcy_p_vlc[i].table_allocated = vlc_offs[i*3+11] - vlc_offs[i*3+10];
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init_vlc(&ff_vc1_cbpcy_p_vlc[i], VC1_CBPCY_P_VLC_BITS, 64,
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ff_vc1_cbpcy_p_bits[i], 1, 1,
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ff_vc1_cbpcy_p_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
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ff_vc1_mv_diff_vlc[i].table = &vlc_table[vlc_offs[i*3+11]];
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ff_vc1_mv_diff_vlc[i].table_allocated = vlc_offs[i*3+12] - vlc_offs[i*3+11];
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init_vlc(&ff_vc1_mv_diff_vlc[i], VC1_MV_DIFF_VLC_BITS, 73,
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ff_vc1_mv_diff_bits[i], 1, 1,
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ff_vc1_mv_diff_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
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}
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for(i=0; i<8; i++){
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ff_vc1_ac_coeff_table[i].table = &vlc_table[vlc_offs[i+21]];
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ff_vc1_ac_coeff_table[i].table_allocated = vlc_offs[i+22] - vlc_offs[i+21];
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init_vlc(&ff_vc1_ac_coeff_table[i], AC_VLC_BITS, vc1_ac_sizes[i],
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&vc1_ac_tables[i][0][1], 8, 4,
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&vc1_ac_tables[i][0][0], 8, 4, INIT_VLC_USE_NEW_STATIC);
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}
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//FIXME: switching to INIT_VLC_STATIC() results in incorrect decoding
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init_vlc(&ff_msmp4_mb_i_vlc, MB_INTRA_VLC_BITS, 64,
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&ff_msmp4_mb_i_table[0][1], 4, 2,
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&ff_msmp4_mb_i_table[0][0], 4, 2, INIT_VLC_USE_STATIC);
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done = 1;
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}
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/* Other defaults */
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v->pq = -1;
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v->mvrange = 0; /* 7.1.1.18, p80 */
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return 0;
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}
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/***********************************************************************/
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/**
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* @defgroup vc1bitplane VC-1 Bitplane decoding
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* @see 8.7, p56
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* @{
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*/
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/**
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* Imode types
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* @{
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*/
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enum Imode {
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IMODE_RAW,
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IMODE_NORM2,
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IMODE_DIFF2,
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IMODE_NORM6,
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IMODE_DIFF6,
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IMODE_ROWSKIP,
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IMODE_COLSKIP
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};
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/** @} */ //imode defines
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/** Decode rows by checking if they are skipped
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* @param plane Buffer to store decoded bits
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* @param[in] width Width of this buffer
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* @param[in] height Height of this buffer
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* @param[in] stride of this buffer
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*/
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static void decode_rowskip(uint8_t* plane, int width, int height, int stride, GetBitContext *gb){
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int x, y;
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for (y=0; y<height; y++){
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if (!get_bits1(gb)) //rowskip
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memset(plane, 0, width);
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else
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for (x=0; x<width; x++)
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plane[x] = get_bits1(gb);
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plane += stride;
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}
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}
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/** Decode columns by checking if they are skipped
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* @param plane Buffer to store decoded bits
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* @param[in] width Width of this buffer
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* @param[in] height Height of this buffer
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* @param[in] stride of this buffer
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* @todo FIXME: Optimize
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*/
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static void decode_colskip(uint8_t* plane, int width, int height, int stride, GetBitContext *gb){
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int x, y;
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for (x=0; x<width; x++){
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if (!get_bits1(gb)) //colskip
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for (y=0; y<height; y++)
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plane[y*stride] = 0;
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else
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for (y=0; y<height; y++)
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plane[y*stride] = get_bits1(gb);
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plane ++;
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}
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}
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/** Decode a bitplane's bits
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* @param data bitplane where to store the decode bits
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* @param[out] raw_flag pointer to the flag indicating that this bitplane is not coded explicitly
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* @param v VC-1 context for bit reading and logging
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* @return Status
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* @todo FIXME: Optimize
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*/
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static int bitplane_decoding(uint8_t* data, int *raw_flag, VC1Context *v)
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{
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GetBitContext *gb = &v->s.gb;
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int imode, x, y, code, offset;
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uint8_t invert, *planep = data;
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int width, height, stride;
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width = v->s.mb_width;
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height = v->s.mb_height;
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stride = v->s.mb_stride;
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invert = get_bits1(gb);
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imode = get_vlc2(gb, ff_vc1_imode_vlc.table, VC1_IMODE_VLC_BITS, 1);
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*raw_flag = 0;
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switch (imode)
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{
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case IMODE_RAW:
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//Data is actually read in the MB layer (same for all tests == "raw")
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*raw_flag = 1; //invert ignored
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return invert;
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case IMODE_DIFF2:
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case IMODE_NORM2:
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if ((height * width) & 1)
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{
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*planep++ = get_bits1(gb);
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offset = 1;
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}
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else offset = 0;
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// decode bitplane as one long line
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for (y = offset; y < height * width; y += 2) {
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code = get_vlc2(gb, ff_vc1_norm2_vlc.table, VC1_NORM2_VLC_BITS, 1);
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*planep++ = code & 1;
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offset++;
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if(offset == width) {
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offset = 0;
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planep += stride - width;
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}
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*planep++ = code >> 1;
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offset++;
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if(offset == width) {
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offset = 0;
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planep += stride - width;
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}
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}
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break;
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case IMODE_DIFF6:
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case IMODE_NORM6:
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if(!(height % 3) && (width % 3)) { // use 2x3 decoding
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for(y = 0; y < height; y+= 3) {
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for(x = width & 1; x < width; x += 2) {
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code = get_vlc2(gb, ff_vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2);
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if(code < 0){
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av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
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return -1;
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}
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planep[x + 0] = (code >> 0) & 1;
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planep[x + 1] = (code >> 1) & 1;
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planep[x + 0 + stride] = (code >> 2) & 1;
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planep[x + 1 + stride] = (code >> 3) & 1;
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planep[x + 0 + stride * 2] = (code >> 4) & 1;
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planep[x + 1 + stride * 2] = (code >> 5) & 1;
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}
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planep += stride * 3;
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}
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if(width & 1) decode_colskip(data, 1, height, stride, &v->s.gb);
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} else { // 3x2
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planep += (height & 1) * stride;
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for(y = height & 1; y < height; y += 2) {
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for(x = width % 3; x < width; x += 3) {
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code = get_vlc2(gb, ff_vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2);
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if(code < 0){
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av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
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return -1;
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}
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planep[x + 0] = (code >> 0) & 1;
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planep[x + 1] = (code >> 1) & 1;
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planep[x + 2] = (code >> 2) & 1;
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planep[x + 0 + stride] = (code >> 3) & 1;
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planep[x + 1 + stride] = (code >> 4) & 1;
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planep[x + 2 + stride] = (code >> 5) & 1;
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}
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planep += stride * 2;
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}
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x = width % 3;
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if(x) decode_colskip(data , x, height , stride, &v->s.gb);
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if(height & 1) decode_rowskip(data+x, width - x, 1, stride, &v->s.gb);
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}
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break;
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case IMODE_ROWSKIP:
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decode_rowskip(data, width, height, stride, &v->s.gb);
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break;
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case IMODE_COLSKIP:
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decode_colskip(data, width, height, stride, &v->s.gb);
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break;
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default: break;
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}
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/* Applying diff operator */
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if (imode == IMODE_DIFF2 || imode == IMODE_DIFF6)
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{
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planep = data;
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planep[0] ^= invert;
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for (x=1; x<width; x++)
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planep[x] ^= planep[x-1];
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for (y=1; y<height; y++)
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{
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planep += stride;
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planep[0] ^= planep[-stride];
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for (x=1; x<width; x++)
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{
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if (planep[x-1] != planep[x-stride]) planep[x] ^= invert;
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else planep[x] ^= planep[x-1];
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}
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}
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}
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else if (invert)
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{
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planep = data;
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for (x=0; x<stride*height; x++) planep[x] = !planep[x]; //FIXME stride
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}
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return (imode<<1) + invert;
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}
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/** @} */ //Bitplane group
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static void vc1_loop_filter_iblk(MpegEncContext *s, int pq)
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{
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int i, j;
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if(!s->first_slice_line)
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s->dsp.vc1_v_loop_filter16(s->dest[0], s->linesize, pq);
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s->dsp.vc1_v_loop_filter16(s->dest[0] + 8*s->linesize, s->linesize, pq);
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for(i = !s->mb_x*8; i < 16; i += 8)
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s->dsp.vc1_h_loop_filter16(s->dest[0] + i, s->linesize, pq);
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for(j = 0; j < 2; j++){
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if(!s->first_slice_line)
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s->dsp.vc1_v_loop_filter8(s->dest[j+1], s->uvlinesize, pq);
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if(s->mb_x)
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s->dsp.vc1_h_loop_filter8(s->dest[j+1], s->uvlinesize, pq);
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}
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}
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/***********************************************************************/
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/** VOP Dquant decoding
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* @param v VC-1 Context
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*/
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static int vop_dquant_decoding(VC1Context *v)
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{
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GetBitContext *gb = &v->s.gb;
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int pqdiff;
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//variable size
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if (v->dquant == 2)
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{
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pqdiff = get_bits(gb, 3);
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if (pqdiff == 7) v->altpq = get_bits(gb, 5);
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else v->altpq = v->pq + pqdiff + 1;
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}
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else
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{
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v->dquantfrm = get_bits1(gb);
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if ( v->dquantfrm )
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{
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v->dqprofile = get_bits(gb, 2);
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switch (v->dqprofile)
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{
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case DQPROFILE_SINGLE_EDGE:
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case DQPROFILE_DOUBLE_EDGES:
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v->dqsbedge = get_bits(gb, 2);
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break;
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case DQPROFILE_ALL_MBS:
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v->dqbilevel = get_bits1(gb);
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if(!v->dqbilevel)
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v->halfpq = 0;
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default: break; //Forbidden ?
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}
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if (v->dqbilevel || v->dqprofile != DQPROFILE_ALL_MBS)
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{
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pqdiff = get_bits(gb, 3);
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if (pqdiff == 7) v->altpq = get_bits(gb, 5);
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else v->altpq = v->pq + pqdiff + 1;
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}
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}
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}
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return 0;
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}
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/** Put block onto picture
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*/
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static void vc1_put_block(VC1Context *v, DCTELEM block[6][64])
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{
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uint8_t *Y;
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int ys, us, vs;
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DSPContext *dsp = &v->s.dsp;
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if(v->rangeredfrm) {
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int i, j, k;
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for(k = 0; k < 6; k++)
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for(j = 0; j < 8; j++)
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for(i = 0; i < 8; i++)
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block[k][i + j*8] = ((block[k][i + j*8] - 128) << 1) + 128;
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}
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ys = v->s.current_picture.linesize[0];
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us = v->s.current_picture.linesize[1];
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vs = v->s.current_picture.linesize[2];
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Y = v->s.dest[0];
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dsp->put_pixels_clamped(block[0], Y, ys);
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dsp->put_pixels_clamped(block[1], Y + 8, ys);
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Y += ys * 8;
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dsp->put_pixels_clamped(block[2], Y, ys);
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dsp->put_pixels_clamped(block[3], Y + 8, ys);
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if(!(v->s.flags & CODEC_FLAG_GRAY)) {
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dsp->put_pixels_clamped(block[4], v->s.dest[1], us);
|
|
dsp->put_pixels_clamped(block[5], v->s.dest[2], vs);
|
|
}
|
|
}
|
|
|
|
/** Do motion compensation over 1 macroblock
|
|
* Mostly adapted hpel_motion and qpel_motion from mpegvideo.c
|
|
*/
|
|
static void vc1_mc_1mv(VC1Context *v, int dir)
|
|
{
|
|
MpegEncContext *s = &v->s;
|
|
DSPContext *dsp = &v->s.dsp;
|
|
uint8_t *srcY, *srcU, *srcV;
|
|
int dxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
|
|
|
|
if(!v->s.last_picture.data[0])return;
|
|
|
|
mx = s->mv[dir][0][0];
|
|
my = s->mv[dir][0][1];
|
|
|
|
// store motion vectors for further use in B frames
|
|
if(s->pict_type == FF_P_TYPE) {
|
|
s->current_picture.motion_val[1][s->block_index[0]][0] = mx;
|
|
s->current_picture.motion_val[1][s->block_index[0]][1] = my;
|
|
}
|
|
uvmx = (mx + ((mx & 3) == 3)) >> 1;
|
|
uvmy = (my + ((my & 3) == 3)) >> 1;
|
|
if(v->fastuvmc) {
|
|
uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1));
|
|
uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1));
|
|
}
|
|
if(!dir) {
|
|
srcY = s->last_picture.data[0];
|
|
srcU = s->last_picture.data[1];
|
|
srcV = s->last_picture.data[2];
|
|
} else {
|
|
srcY = s->next_picture.data[0];
|
|
srcU = s->next_picture.data[1];
|
|
srcV = s->next_picture.data[2];
|
|
}
|
|
|
|
src_x = s->mb_x * 16 + (mx >> 2);
|
|
src_y = s->mb_y * 16 + (my >> 2);
|
|
uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
|
|
uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
|
|
|
|
if(v->profile != PROFILE_ADVANCED){
|
|
src_x = av_clip( src_x, -16, s->mb_width * 16);
|
|
src_y = av_clip( src_y, -16, s->mb_height * 16);
|
|
uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
|
|
uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
|
|
}else{
|
|
src_x = av_clip( src_x, -17, s->avctx->coded_width);
|
|
src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
|
|
uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
|
|
uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
|
|
}
|
|
|
|
srcY += src_y * s->linesize + src_x;
|
|
srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
|
|
srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
|
|
|
|
/* for grayscale we should not try to read from unknown area */
|
|
if(s->flags & CODEC_FLAG_GRAY) {
|
|
srcU = s->edge_emu_buffer + 18 * s->linesize;
|
|
srcV = s->edge_emu_buffer + 18 * s->linesize;
|
|
}
|
|
|
|
if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
|
|
|| (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 16 - s->mspel*3
|
|
|| (unsigned)(src_y - s->mspel) > s->v_edge_pos - (my&3) - 16 - s->mspel*3){
|
|
uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize;
|
|
|
|
srcY -= s->mspel * (1 + s->linesize);
|
|
ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 17+s->mspel*2, 17+s->mspel*2,
|
|
src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
|
|
srcY = s->edge_emu_buffer;
|
|
ff_emulated_edge_mc(uvbuf , srcU, s->uvlinesize, 8+1, 8+1,
|
|
uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
|
|
ff_emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, 8+1, 8+1,
|
|
uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
|
|
srcU = uvbuf;
|
|
srcV = uvbuf + 16;
|
|
/* if we deal with range reduction we need to scale source blocks */
|
|
if(v->rangeredfrm) {
|
|
int i, j;
|
|
uint8_t *src, *src2;
|
|
|
|
src = srcY;
|
|
for(j = 0; j < 17 + s->mspel*2; j++) {
|
|
for(i = 0; i < 17 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
|
|
src += s->linesize;
|
|
}
|
|
src = srcU; src2 = srcV;
|
|
for(j = 0; j < 9; j++) {
|
|
for(i = 0; i < 9; i++) {
|
|
src[i] = ((src[i] - 128) >> 1) + 128;
|
|
src2[i] = ((src2[i] - 128) >> 1) + 128;
|
|
}
|
|
src += s->uvlinesize;
|
|
src2 += s->uvlinesize;
|
|
}
|
|
}
|
|
/* if we deal with intensity compensation we need to scale source blocks */
|
|
if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
|
|
int i, j;
|
|
uint8_t *src, *src2;
|
|
|
|
src = srcY;
|
|
for(j = 0; j < 17 + s->mspel*2; j++) {
|
|
for(i = 0; i < 17 + s->mspel*2; i++) src[i] = v->luty[src[i]];
|
|
src += s->linesize;
|
|
}
|
|
src = srcU; src2 = srcV;
|
|
for(j = 0; j < 9; j++) {
|
|
for(i = 0; i < 9; i++) {
|
|
src[i] = v->lutuv[src[i]];
|
|
src2[i] = v->lutuv[src2[i]];
|
|
}
|
|
src += s->uvlinesize;
|
|
src2 += s->uvlinesize;
|
|
}
|
|
}
|
|
srcY += s->mspel * (1 + s->linesize);
|
|
}
|
|
|
|
if(s->mspel) {
|
|
dxy = ((my & 3) << 2) | (mx & 3);
|
|
dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] , srcY , s->linesize, v->rnd);
|
|
dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8, srcY + 8, s->linesize, v->rnd);
|
|
srcY += s->linesize * 8;
|
|
dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize , srcY , s->linesize, v->rnd);
|
|
dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize + 8, srcY + 8, s->linesize, v->rnd);
|
|
} else { // hpel mc - always used for luma
|
|
dxy = (my & 2) | ((mx & 2) >> 1);
|
|
|
|
if(!v->rnd)
|
|
dsp->put_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
|
|
else
|
|
dsp->put_no_rnd_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
|
|
}
|
|
|
|
if(s->flags & CODEC_FLAG_GRAY) return;
|
|
/* Chroma MC always uses qpel bilinear */
|
|
uvmx = (uvmx&3)<<1;
|
|
uvmy = (uvmy&3)<<1;
|
|
if(!v->rnd){
|
|
dsp->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
|
|
dsp->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
|
|
}else{
|
|
dsp->put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
|
|
dsp->put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
|
|
}
|
|
}
|
|
|
|
/** Do motion compensation for 4-MV macroblock - luminance block
|
|
*/
|
|
static void vc1_mc_4mv_luma(VC1Context *v, int n)
|
|
{
|
|
MpegEncContext *s = &v->s;
|
|
DSPContext *dsp = &v->s.dsp;
|
|
uint8_t *srcY;
|
|
int dxy, mx, my, src_x, src_y;
|
|
int off;
|
|
|
|
if(!v->s.last_picture.data[0])return;
|
|
mx = s->mv[0][n][0];
|
|
my = s->mv[0][n][1];
|
|
srcY = s->last_picture.data[0];
|
|
|
|
off = s->linesize * 4 * (n&2) + (n&1) * 8;
|
|
|
|
src_x = s->mb_x * 16 + (n&1) * 8 + (mx >> 2);
|
|
src_y = s->mb_y * 16 + (n&2) * 4 + (my >> 2);
|
|
|
|
if(v->profile != PROFILE_ADVANCED){
|
|
src_x = av_clip( src_x, -16, s->mb_width * 16);
|
|
src_y = av_clip( src_y, -16, s->mb_height * 16);
|
|
}else{
|
|
src_x = av_clip( src_x, -17, s->avctx->coded_width);
|
|
src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
|
|
}
|
|
|
|
srcY += src_y * s->linesize + src_x;
|
|
|
|
if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
|
|
|| (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 8 - s->mspel*2
|
|
|| (unsigned)(src_y - s->mspel) > s->v_edge_pos - (my&3) - 8 - s->mspel*2){
|
|
srcY -= s->mspel * (1 + s->linesize);
|
|
ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 9+s->mspel*2, 9+s->mspel*2,
|
|
src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
|
|
srcY = s->edge_emu_buffer;
|
|
/* if we deal with range reduction we need to scale source blocks */
|
|
if(v->rangeredfrm) {
|
|
int i, j;
|
|
uint8_t *src;
|
|
|
|
src = srcY;
|
|
for(j = 0; j < 9 + s->mspel*2; j++) {
|
|
for(i = 0; i < 9 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
|
|
src += s->linesize;
|
|
}
|
|
}
|
|
/* if we deal with intensity compensation we need to scale source blocks */
|
|
if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
|
|
int i, j;
|
|
uint8_t *src;
|
|
|
|
src = srcY;
|
|
for(j = 0; j < 9 + s->mspel*2; j++) {
|
|
for(i = 0; i < 9 + s->mspel*2; i++) src[i] = v->luty[src[i]];
|
|
src += s->linesize;
|
|
}
|
|
}
|
|
srcY += s->mspel * (1 + s->linesize);
|
|
}
|
|
|
|
if(s->mspel) {
|
|
dxy = ((my & 3) << 2) | (mx & 3);
|
|
dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + off, srcY, s->linesize, v->rnd);
|
|
} else { // hpel mc - always used for luma
|
|
dxy = (my & 2) | ((mx & 2) >> 1);
|
|
if(!v->rnd)
|
|
dsp->put_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
|
|
else
|
|
dsp->put_no_rnd_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
|
|
}
|
|
}
|
|
|
|
static inline int median4(int a, int b, int c, int d)
|
|
{
|
|
if(a < b) {
|
|
if(c < d) return (FFMIN(b, d) + FFMAX(a, c)) / 2;
|
|
else return (FFMIN(b, c) + FFMAX(a, d)) / 2;
|
|
} else {
|
|
if(c < d) return (FFMIN(a, d) + FFMAX(b, c)) / 2;
|
|
else return (FFMIN(a, c) + FFMAX(b, d)) / 2;
|
|
}
|
|
}
|
|
|
|
|
|
/** Do motion compensation for 4-MV macroblock - both chroma blocks
|
|
*/
|
|
static void vc1_mc_4mv_chroma(VC1Context *v)
|
|
{
|
|
MpegEncContext *s = &v->s;
|
|
DSPContext *dsp = &v->s.dsp;
|
|
uint8_t *srcU, *srcV;
|
|
int uvmx, uvmy, uvsrc_x, uvsrc_y;
|
|
int i, idx, tx = 0, ty = 0;
|
|
int mvx[4], mvy[4], intra[4];
|
|
static const int count[16] = { 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4};
|
|
|
|
if(!v->s.last_picture.data[0])return;
|
|
if(s->flags & CODEC_FLAG_GRAY) return;
|
|
|
|
for(i = 0; i < 4; i++) {
|
|
mvx[i] = s->mv[0][i][0];
|
|
mvy[i] = s->mv[0][i][1];
|
|
intra[i] = v->mb_type[0][s->block_index[i]];
|
|
}
|
|
|
|
/* calculate chroma MV vector from four luma MVs */
|
|
idx = (intra[3] << 3) | (intra[2] << 2) | (intra[1] << 1) | intra[0];
|
|
if(!idx) { // all blocks are inter
|
|
tx = median4(mvx[0], mvx[1], mvx[2], mvx[3]);
|
|
ty = median4(mvy[0], mvy[1], mvy[2], mvy[3]);
|
|
} else if(count[idx] == 1) { // 3 inter blocks
|
|
switch(idx) {
|
|
case 0x1:
|
|
tx = mid_pred(mvx[1], mvx[2], mvx[3]);
|
|
ty = mid_pred(mvy[1], mvy[2], mvy[3]);
|
|
break;
|
|
case 0x2:
|
|
tx = mid_pred(mvx[0], mvx[2], mvx[3]);
|
|
ty = mid_pred(mvy[0], mvy[2], mvy[3]);
|
|
break;
|
|
case 0x4:
|
|
tx = mid_pred(mvx[0], mvx[1], mvx[3]);
|
|
ty = mid_pred(mvy[0], mvy[1], mvy[3]);
|
|
break;
|
|
case 0x8:
|
|
tx = mid_pred(mvx[0], mvx[1], mvx[2]);
|
|
ty = mid_pred(mvy[0], mvy[1], mvy[2]);
|
|
break;
|
|
}
|
|
} else if(count[idx] == 2) {
|
|
int t1 = 0, t2 = 0;
|
|
for(i=0; i<3;i++) if(!intra[i]) {t1 = i; break;}
|
|
for(i= t1+1; i<4; i++)if(!intra[i]) {t2 = i; break;}
|
|
tx = (mvx[t1] + mvx[t2]) / 2;
|
|
ty = (mvy[t1] + mvy[t2]) / 2;
|
|
} else {
|
|
s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
|
|
s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
|
|
return; //no need to do MC for inter blocks
|
|
}
|
|
|
|
s->current_picture.motion_val[1][s->block_index[0]][0] = tx;
|
|
s->current_picture.motion_val[1][s->block_index[0]][1] = ty;
|
|
uvmx = (tx + ((tx&3) == 3)) >> 1;
|
|
uvmy = (ty + ((ty&3) == 3)) >> 1;
|
|
if(v->fastuvmc) {
|
|
uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1));
|
|
uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1));
|
|
}
|
|
|
|
uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
|
|
uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
|
|
|
|
if(v->profile != PROFILE_ADVANCED){
|
|
uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
|
|
uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
|
|
}else{
|
|
uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
|
|
uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
|
|
}
|
|
|
|
srcU = s->last_picture.data[1] + uvsrc_y * s->uvlinesize + uvsrc_x;
|
|
srcV = s->last_picture.data[2] + uvsrc_y * s->uvlinesize + uvsrc_x;
|
|
if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
|
|
|| (unsigned)uvsrc_x > (s->h_edge_pos >> 1) - 9
|
|
|| (unsigned)uvsrc_y > (s->v_edge_pos >> 1) - 9){
|
|
ff_emulated_edge_mc(s->edge_emu_buffer , srcU, s->uvlinesize, 8+1, 8+1,
|
|
uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
|
|
ff_emulated_edge_mc(s->edge_emu_buffer + 16, srcV, s->uvlinesize, 8+1, 8+1,
|
|
uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
|
|
srcU = s->edge_emu_buffer;
|
|
srcV = s->edge_emu_buffer + 16;
|
|
|
|
/* if we deal with range reduction we need to scale source blocks */
|
|
if(v->rangeredfrm) {
|
|
int i, j;
|
|
uint8_t *src, *src2;
|
|
|
|
src = srcU; src2 = srcV;
|
|
for(j = 0; j < 9; j++) {
|
|
for(i = 0; i < 9; i++) {
|
|
src[i] = ((src[i] - 128) >> 1) + 128;
|
|
src2[i] = ((src2[i] - 128) >> 1) + 128;
|
|
}
|
|
src += s->uvlinesize;
|
|
src2 += s->uvlinesize;
|
|
}
|
|
}
|
|
/* if we deal with intensity compensation we need to scale source blocks */
|
|
if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
|
|
int i, j;
|
|
uint8_t *src, *src2;
|
|
|
|
src = srcU; src2 = srcV;
|
|
for(j = 0; j < 9; j++) {
|
|
for(i = 0; i < 9; i++) {
|
|
src[i] = v->lutuv[src[i]];
|
|
src2[i] = v->lutuv[src2[i]];
|
|
}
|
|
src += s->uvlinesize;
|
|
src2 += s->uvlinesize;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Chroma MC always uses qpel bilinear */
|
|
uvmx = (uvmx&3)<<1;
|
|
uvmy = (uvmy&3)<<1;
|
|
if(!v->rnd){
|
|
dsp->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
|
|
dsp->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
|
|
}else{
|
|
dsp->put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
|
|
dsp->put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
|
|
}
|
|
}
|
|
|
|
static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb);
|
|
|
|
/**
|
|
* Decode Simple/Main Profiles sequence header
|
|
* @see Figure 7-8, p16-17
|
|
* @param avctx Codec context
|
|
* @param gb GetBit context initialized from Codec context extra_data
|
|
* @return Status
|
|
*/
|
|
static int decode_sequence_header(AVCodecContext *avctx, GetBitContext *gb)
|
|
{
|
|
VC1Context *v = avctx->priv_data;
|
|
|
|
av_log(avctx, AV_LOG_DEBUG, "Header: %0X\n", show_bits(gb, 32));
|
|
v->profile = get_bits(gb, 2);
|
|
if (v->profile == PROFILE_COMPLEX)
|
|
{
|
|
av_log(avctx, AV_LOG_ERROR, "WMV3 Complex Profile is not fully supported\n");
|
|
}
|
|
|
|
if (v->profile == PROFILE_ADVANCED)
|
|
{
|
|
v->zz_8x4 = ff_vc1_adv_progressive_8x4_zz;
|
|
v->zz_4x8 = ff_vc1_adv_progressive_4x8_zz;
|
|
return decode_sequence_header_adv(v, gb);
|
|
}
|
|
else
|
|
{
|
|
v->zz_8x4 = wmv2_scantableA;
|
|
v->zz_4x8 = wmv2_scantableB;
|
|
v->res_sm = get_bits(gb, 2); //reserved
|
|
if (v->res_sm)
|
|
{
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Reserved RES_SM=%i is forbidden\n", v->res_sm);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
// (fps-2)/4 (->30)
|
|
v->frmrtq_postproc = get_bits(gb, 3); //common
|
|
// (bitrate-32kbps)/64kbps
|
|
v->bitrtq_postproc = get_bits(gb, 5); //common
|
|
v->s.loop_filter = get_bits1(gb); //common
|
|
if(v->s.loop_filter == 1 && v->profile == PROFILE_SIMPLE)
|
|
{
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"LOOPFILTER shell not be enabled in simple profile\n");
|
|
}
|
|
if(v->s.avctx->skip_loop_filter >= AVDISCARD_ALL)
|
|
v->s.loop_filter = 0;
|
|
|
|
v->res_x8 = get_bits1(gb); //reserved
|
|
v->multires = get_bits1(gb);
|
|
v->res_fasttx = get_bits1(gb);
|
|
if (!v->res_fasttx)
|
|
{
|
|
v->s.dsp.vc1_inv_trans_8x8 = ff_simple_idct;
|
|
v->s.dsp.vc1_inv_trans_8x4 = ff_simple_idct84_add;
|
|
v->s.dsp.vc1_inv_trans_4x8 = ff_simple_idct48_add;
|
|
v->s.dsp.vc1_inv_trans_4x4 = ff_simple_idct44_add;
|
|
}
|
|
|
|
v->fastuvmc = get_bits1(gb); //common
|
|
if (!v->profile && !v->fastuvmc)
|
|
{
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"FASTUVMC unavailable in Simple Profile\n");
|
|
return -1;
|
|
}
|
|
v->extended_mv = get_bits1(gb); //common
|
|
if (!v->profile && v->extended_mv)
|
|
{
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Extended MVs unavailable in Simple Profile\n");
|
|
return -1;
|
|
}
|
|
v->dquant = get_bits(gb, 2); //common
|
|
v->vstransform = get_bits1(gb); //common
|
|
|
|
v->res_transtab = get_bits1(gb);
|
|
if (v->res_transtab)
|
|
{
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"1 for reserved RES_TRANSTAB is forbidden\n");
|
|
return -1;
|
|
}
|
|
|
|
v->overlap = get_bits1(gb); //common
|
|
|
|
v->s.resync_marker = get_bits1(gb);
|
|
v->rangered = get_bits1(gb);
|
|
if (v->rangered && v->profile == PROFILE_SIMPLE)
|
|
{
|
|
av_log(avctx, AV_LOG_INFO,
|
|
"RANGERED should be set to 0 in simple profile\n");
|
|
}
|
|
|
|
v->s.max_b_frames = avctx->max_b_frames = get_bits(gb, 3); //common
|
|
v->quantizer_mode = get_bits(gb, 2); //common
|
|
|
|
v->finterpflag = get_bits1(gb); //common
|
|
v->res_rtm_flag = get_bits1(gb); //reserved
|
|
if (!v->res_rtm_flag)
|
|
{
|
|
// av_log(avctx, AV_LOG_ERROR,
|
|
// "0 for reserved RES_RTM_FLAG is forbidden\n");
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Old WMV3 version detected, only I-frames will be decoded\n");
|
|
//return -1;
|
|
}
|
|
//TODO: figure out what they mean (always 0x402F)
|
|
if(!v->res_fasttx) skip_bits(gb, 16);
|
|
av_log(avctx, AV_LOG_DEBUG,
|
|
"Profile %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
|
|
"LoopFilter=%i, MultiRes=%i, FastUVMC=%i, Extended MV=%i\n"
|
|
"Rangered=%i, VSTransform=%i, Overlap=%i, SyncMarker=%i\n"
|
|
"DQuant=%i, Quantizer mode=%i, Max B frames=%i\n",
|
|
v->profile, v->frmrtq_postproc, v->bitrtq_postproc,
|
|
v->s.loop_filter, v->multires, v->fastuvmc, v->extended_mv,
|
|
v->rangered, v->vstransform, v->overlap, v->s.resync_marker,
|
|
v->dquant, v->quantizer_mode, avctx->max_b_frames
|
|
);
|
|
return 0;
|
|
}
|
|
|
|
static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb)
|
|
{
|
|
v->res_rtm_flag = 1;
|
|
v->level = get_bits(gb, 3);
|
|
if(v->level >= 5)
|
|
{
|
|
av_log(v->s.avctx, AV_LOG_ERROR, "Reserved LEVEL %i\n",v->level);
|
|
}
|
|
v->chromaformat = get_bits(gb, 2);
|
|
if (v->chromaformat != 1)
|
|
{
|
|
av_log(v->s.avctx, AV_LOG_ERROR,
|
|
"Only 4:2:0 chroma format supported\n");
|
|
return -1;
|
|
}
|
|
|
|
// (fps-2)/4 (->30)
|
|
v->frmrtq_postproc = get_bits(gb, 3); //common
|
|
// (bitrate-32kbps)/64kbps
|
|
v->bitrtq_postproc = get_bits(gb, 5); //common
|
|
v->postprocflag = get_bits1(gb); //common
|
|
|
|
v->s.avctx->coded_width = (get_bits(gb, 12) + 1) << 1;
|
|
v->s.avctx->coded_height = (get_bits(gb, 12) + 1) << 1;
|
|
v->s.avctx->width = v->s.avctx->coded_width;
|
|
v->s.avctx->height = v->s.avctx->coded_height;
|
|
v->broadcast = get_bits1(gb);
|
|
v->interlace = get_bits1(gb);
|
|
v->tfcntrflag = get_bits1(gb);
|
|
v->finterpflag = get_bits1(gb);
|
|
skip_bits1(gb); // reserved
|
|
|
|
v->s.h_edge_pos = v->s.avctx->coded_width;
|
|
v->s.v_edge_pos = v->s.avctx->coded_height;
|
|
|
|
av_log(v->s.avctx, AV_LOG_DEBUG,
|
|
"Advanced Profile level %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
|
|
"LoopFilter=%i, ChromaFormat=%i, Pulldown=%i, Interlace: %i\n"
|
|
"TFCTRflag=%i, FINTERPflag=%i\n",
|
|
v->level, v->frmrtq_postproc, v->bitrtq_postproc,
|
|
v->s.loop_filter, v->chromaformat, v->broadcast, v->interlace,
|
|
v->tfcntrflag, v->finterpflag
|
|
);
|
|
|
|
v->psf = get_bits1(gb);
|
|
if(v->psf) { //PsF, 6.1.13
|
|
av_log(v->s.avctx, AV_LOG_ERROR, "Progressive Segmented Frame mode: not supported (yet)\n");
|
|
return -1;
|
|
}
|
|
v->s.max_b_frames = v->s.avctx->max_b_frames = 7;
|
|
if(get_bits1(gb)) { //Display Info - decoding is not affected by it
|
|
int w, h, ar = 0;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "Display extended info:\n");
|
|
v->s.avctx->width = w = get_bits(gb, 14) + 1;
|
|
v->s.avctx->height = h = get_bits(gb, 14) + 1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "Display dimensions: %ix%i\n", w, h);
|
|
if(get_bits1(gb))
|
|
ar = get_bits(gb, 4);
|
|
if(ar && ar < 14){
|
|
v->s.avctx->sample_aspect_ratio = ff_vc1_pixel_aspect[ar];
|
|
}else if(ar == 15){
|
|
w = get_bits(gb, 8);
|
|
h = get_bits(gb, 8);
|
|
v->s.avctx->sample_aspect_ratio = (AVRational){w, h};
|
|
}
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "Aspect: %i:%i\n", v->s.avctx->sample_aspect_ratio.num, v->s.avctx->sample_aspect_ratio.den);
|
|
|
|
if(get_bits1(gb)){ //framerate stuff
|
|
if(get_bits1(gb)) {
|
|
v->s.avctx->time_base.num = 32;
|
|
v->s.avctx->time_base.den = get_bits(gb, 16) + 1;
|
|
} else {
|
|
int nr, dr;
|
|
nr = get_bits(gb, 8);
|
|
dr = get_bits(gb, 4);
|
|
if(nr && nr < 8 && dr && dr < 3){
|
|
v->s.avctx->time_base.num = ff_vc1_fps_dr[dr - 1];
|
|
v->s.avctx->time_base.den = ff_vc1_fps_nr[nr - 1] * 1000;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(get_bits1(gb)){
|
|
v->color_prim = get_bits(gb, 8);
|
|
v->transfer_char = get_bits(gb, 8);
|
|
v->matrix_coef = get_bits(gb, 8);
|
|
}
|
|
}
|
|
|
|
v->hrd_param_flag = get_bits1(gb);
|
|
if(v->hrd_param_flag) {
|
|
int i;
|
|
v->hrd_num_leaky_buckets = get_bits(gb, 5);
|
|
skip_bits(gb, 4); //bitrate exponent
|
|
skip_bits(gb, 4); //buffer size exponent
|
|
for(i = 0; i < v->hrd_num_leaky_buckets; i++) {
|
|
skip_bits(gb, 16); //hrd_rate[n]
|
|
skip_bits(gb, 16); //hrd_buffer[n]
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int decode_entry_point(AVCodecContext *avctx, GetBitContext *gb)
|
|
{
|
|
VC1Context *v = avctx->priv_data;
|
|
int i;
|
|
|
|
av_log(avctx, AV_LOG_DEBUG, "Entry point: %08X\n", show_bits_long(gb, 32));
|
|
v->broken_link = get_bits1(gb);
|
|
v->closed_entry = get_bits1(gb);
|
|
v->panscanflag = get_bits1(gb);
|
|
v->refdist_flag = get_bits1(gb);
|
|
v->s.loop_filter = get_bits1(gb);
|
|
v->fastuvmc = get_bits1(gb);
|
|
v->extended_mv = get_bits1(gb);
|
|
v->dquant = get_bits(gb, 2);
|
|
v->vstransform = get_bits1(gb);
|
|
v->overlap = get_bits1(gb);
|
|
v->quantizer_mode = get_bits(gb, 2);
|
|
|
|
if(v->hrd_param_flag){
|
|
for(i = 0; i < v->hrd_num_leaky_buckets; i++) {
|
|
skip_bits(gb, 8); //hrd_full[n]
|
|
}
|
|
}
|
|
|
|
if(get_bits1(gb)){
|
|
avctx->coded_width = (get_bits(gb, 12)+1)<<1;
|
|
avctx->coded_height = (get_bits(gb, 12)+1)<<1;
|
|
}
|
|
if(v->extended_mv)
|
|
v->extended_dmv = get_bits1(gb);
|
|
if((v->range_mapy_flag = get_bits1(gb))) {
|
|
av_log(avctx, AV_LOG_ERROR, "Luma scaling is not supported, expect wrong picture\n");
|
|
v->range_mapy = get_bits(gb, 3);
|
|
}
|
|
if((v->range_mapuv_flag = get_bits1(gb))) {
|
|
av_log(avctx, AV_LOG_ERROR, "Chroma scaling is not supported, expect wrong picture\n");
|
|
v->range_mapuv = get_bits(gb, 3);
|
|
}
|
|
|
|
av_log(avctx, AV_LOG_DEBUG, "Entry point info:\n"
|
|
"BrokenLink=%i, ClosedEntry=%i, PanscanFlag=%i\n"
|
|
"RefDist=%i, Postproc=%i, FastUVMC=%i, ExtMV=%i\n"
|
|
"DQuant=%i, VSTransform=%i, Overlap=%i, Qmode=%i\n",
|
|
v->broken_link, v->closed_entry, v->panscanflag, v->refdist_flag, v->s.loop_filter,
|
|
v->fastuvmc, v->extended_mv, v->dquant, v->vstransform, v->overlap, v->quantizer_mode);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vc1_parse_frame_header(VC1Context *v, GetBitContext* gb)
|
|
{
|
|
int pqindex, lowquant, status;
|
|
|
|
if(v->finterpflag) v->interpfrm = get_bits1(gb);
|
|
skip_bits(gb, 2); //framecnt unused
|
|
v->rangeredfrm = 0;
|
|
if (v->rangered) v->rangeredfrm = get_bits1(gb);
|
|
v->s.pict_type = get_bits1(gb);
|
|
if (v->s.avctx->max_b_frames) {
|
|
if (!v->s.pict_type) {
|
|
if (get_bits1(gb)) v->s.pict_type = FF_I_TYPE;
|
|
else v->s.pict_type = FF_B_TYPE;
|
|
} else v->s.pict_type = FF_P_TYPE;
|
|
} else v->s.pict_type = v->s.pict_type ? FF_P_TYPE : FF_I_TYPE;
|
|
|
|
v->bi_type = 0;
|
|
if(v->s.pict_type == FF_B_TYPE) {
|
|
v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
|
|
v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index];
|
|
if(v->bfraction == 0) {
|
|
v->s.pict_type = FF_BI_TYPE;
|
|
}
|
|
}
|
|
if(v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_BI_TYPE)
|
|
skip_bits(gb, 7); // skip buffer fullness
|
|
|
|
/* calculate RND */
|
|
if(v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_BI_TYPE)
|
|
v->rnd = 1;
|
|
if(v->s.pict_type == FF_P_TYPE)
|
|
v->rnd ^= 1;
|
|
|
|
/* Quantizer stuff */
|
|
pqindex = get_bits(gb, 5);
|
|
if(!pqindex) return -1;
|
|
if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
|
|
v->pq = ff_vc1_pquant_table[0][pqindex];
|
|
else
|
|
v->pq = ff_vc1_pquant_table[1][pqindex];
|
|
|
|
v->pquantizer = 1;
|
|
if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
|
|
v->pquantizer = pqindex < 9;
|
|
if (v->quantizer_mode == QUANT_NON_UNIFORM)
|
|
v->pquantizer = 0;
|
|
v->pqindex = pqindex;
|
|
if (pqindex < 9) v->halfpq = get_bits1(gb);
|
|
else v->halfpq = 0;
|
|
if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
|
|
v->pquantizer = get_bits1(gb);
|
|
v->dquantfrm = 0;
|
|
if (v->extended_mv == 1) v->mvrange = get_unary(gb, 0, 3);
|
|
v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
|
|
v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
|
|
v->range_x = 1 << (v->k_x - 1);
|
|
v->range_y = 1 << (v->k_y - 1);
|
|
if (v->multires && v->s.pict_type != FF_B_TYPE) v->respic = get_bits(gb, 2);
|
|
|
|
if(v->res_x8 && (v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_BI_TYPE)){
|
|
v->x8_type = get_bits1(gb);
|
|
}else v->x8_type = 0;
|
|
//av_log(v->s.avctx, AV_LOG_INFO, "%c Frame: QP=[%i]%i (+%i/2) %i\n",
|
|
// (v->s.pict_type == FF_P_TYPE) ? 'P' : ((v->s.pict_type == FF_I_TYPE) ? 'I' : 'B'), pqindex, v->pq, v->halfpq, v->rangeredfrm);
|
|
|
|
if(v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_P_TYPE) v->use_ic = 0;
|
|
|
|
switch(v->s.pict_type) {
|
|
case FF_P_TYPE:
|
|
if (v->pq < 5) v->tt_index = 0;
|
|
else if(v->pq < 13) v->tt_index = 1;
|
|
else v->tt_index = 2;
|
|
|
|
lowquant = (v->pq > 12) ? 0 : 1;
|
|
v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];
|
|
if (v->mv_mode == MV_PMODE_INTENSITY_COMP)
|
|
{
|
|
int scale, shift, i;
|
|
v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];
|
|
v->lumscale = get_bits(gb, 6);
|
|
v->lumshift = get_bits(gb, 6);
|
|
v->use_ic = 1;
|
|
/* fill lookup tables for intensity compensation */
|
|
if(!v->lumscale) {
|
|
scale = -64;
|
|
shift = (255 - v->lumshift * 2) << 6;
|
|
if(v->lumshift > 31)
|
|
shift += 128 << 6;
|
|
} else {
|
|
scale = v->lumscale + 32;
|
|
if(v->lumshift > 31)
|
|
shift = (v->lumshift - 64) << 6;
|
|
else
|
|
shift = v->lumshift << 6;
|
|
}
|
|
for(i = 0; i < 256; i++) {
|
|
v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
|
|
v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
|
|
}
|
|
}
|
|
if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
|
|
v->s.quarter_sample = 0;
|
|
else if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
|
|
if(v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
|
|
v->s.quarter_sample = 0;
|
|
else
|
|
v->s.quarter_sample = 1;
|
|
} else
|
|
v->s.quarter_sample = 1;
|
|
v->s.mspel = !(v->mv_mode == MV_PMODE_1MV_HPEL_BILIN || (v->mv_mode == MV_PMODE_INTENSITY_COMP && v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN));
|
|
|
|
if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
|
|
v->mv_mode2 == MV_PMODE_MIXED_MV)
|
|
|| v->mv_mode == MV_PMODE_MIXED_MV)
|
|
{
|
|
status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
|
|
if (status < 0) return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
} else {
|
|
v->mv_type_is_raw = 0;
|
|
memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
|
|
}
|
|
status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
|
|
if (status < 0) return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
|
|
/* Hopefully this is correct for P frames */
|
|
v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
|
|
v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
|
|
|
|
if (v->dquant)
|
|
{
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
|
|
vop_dquant_decoding(v);
|
|
}
|
|
|
|
v->ttfrm = 0; //FIXME Is that so ?
|
|
if (v->vstransform)
|
|
{
|
|
v->ttmbf = get_bits1(gb);
|
|
if (v->ttmbf)
|
|
{
|
|
v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
|
|
}
|
|
} else {
|
|
v->ttmbf = 1;
|
|
v->ttfrm = TT_8X8;
|
|
}
|
|
break;
|
|
case FF_B_TYPE:
|
|
if (v->pq < 5) v->tt_index = 0;
|
|
else if(v->pq < 13) v->tt_index = 1;
|
|
else v->tt_index = 2;
|
|
|
|
v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
|
|
v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
|
|
v->s.mspel = v->s.quarter_sample;
|
|
|
|
status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
|
|
if (status < 0) return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
|
|
if (status < 0) return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
|
|
v->s.mv_table_index = get_bits(gb, 2);
|
|
v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
|
|
|
|
if (v->dquant)
|
|
{
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
|
|
vop_dquant_decoding(v);
|
|
}
|
|
|
|
v->ttfrm = 0;
|
|
if (v->vstransform)
|
|
{
|
|
v->ttmbf = get_bits1(gb);
|
|
if (v->ttmbf)
|
|
{
|
|
v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
|
|
}
|
|
} else {
|
|
v->ttmbf = 1;
|
|
v->ttfrm = TT_8X8;
|
|
}
|
|
break;
|
|
}
|
|
|
|
if(!v->x8_type)
|
|
{
|
|
/* AC Syntax */
|
|
v->c_ac_table_index = decode012(gb);
|
|
if (v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_BI_TYPE)
|
|
{
|
|
v->y_ac_table_index = decode012(gb);
|
|
}
|
|
/* DC Syntax */
|
|
v->s.dc_table_index = get_bits1(gb);
|
|
}
|
|
|
|
if(v->s.pict_type == FF_BI_TYPE) {
|
|
v->s.pict_type = FF_B_TYPE;
|
|
v->bi_type = 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
|
|
{
|
|
int pqindex, lowquant;
|
|
int status;
|
|
|
|
v->p_frame_skipped = 0;
|
|
|
|
if(v->interlace){
|
|
v->fcm = decode012(gb);
|
|
if(v->fcm) return -1; // interlaced frames/fields are not implemented
|
|
}
|
|
switch(get_unary(gb, 0, 4)) {
|
|
case 0:
|
|
v->s.pict_type = FF_P_TYPE;
|
|
break;
|
|
case 1:
|
|
v->s.pict_type = FF_B_TYPE;
|
|
break;
|
|
case 2:
|
|
v->s.pict_type = FF_I_TYPE;
|
|
break;
|
|
case 3:
|
|
v->s.pict_type = FF_BI_TYPE;
|
|
break;
|
|
case 4:
|
|
v->s.pict_type = FF_P_TYPE; // skipped pic
|
|
v->p_frame_skipped = 1;
|
|
return 0;
|
|
}
|
|
if(v->tfcntrflag)
|
|
skip_bits(gb, 8);
|
|
if(v->broadcast) {
|
|
if(!v->interlace || v->psf) {
|
|
v->rptfrm = get_bits(gb, 2);
|
|
} else {
|
|
v->tff = get_bits1(gb);
|
|
v->rptfrm = get_bits1(gb);
|
|
}
|
|
}
|
|
if(v->panscanflag) {
|
|
//...
|
|
}
|
|
v->rnd = get_bits1(gb);
|
|
if(v->interlace)
|
|
v->uvsamp = get_bits1(gb);
|
|
if(v->finterpflag) v->interpfrm = get_bits1(gb);
|
|
if(v->s.pict_type == FF_B_TYPE) {
|
|
v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
|
|
v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index];
|
|
if(v->bfraction == 0) {
|
|
v->s.pict_type = FF_BI_TYPE; /* XXX: should not happen here */
|
|
}
|
|
}
|
|
pqindex = get_bits(gb, 5);
|
|
if(!pqindex) return -1;
|
|
v->pqindex = pqindex;
|
|
if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
|
|
v->pq = ff_vc1_pquant_table[0][pqindex];
|
|
else
|
|
v->pq = ff_vc1_pquant_table[1][pqindex];
|
|
|
|
v->pquantizer = 1;
|
|
if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
|
|
v->pquantizer = pqindex < 9;
|
|
if (v->quantizer_mode == QUANT_NON_UNIFORM)
|
|
v->pquantizer = 0;
|
|
v->pqindex = pqindex;
|
|
if (pqindex < 9) v->halfpq = get_bits1(gb);
|
|
else v->halfpq = 0;
|
|
if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
|
|
v->pquantizer = get_bits1(gb);
|
|
if(v->postprocflag)
|
|
v->postproc = get_bits(gb, 2);
|
|
|
|
if(v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_P_TYPE) v->use_ic = 0;
|
|
|
|
switch(v->s.pict_type) {
|
|
case FF_I_TYPE:
|
|
case FF_BI_TYPE:
|
|
status = bitplane_decoding(v->acpred_plane, &v->acpred_is_raw, v);
|
|
if (status < 0) return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "ACPRED plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
v->condover = CONDOVER_NONE;
|
|
if(v->overlap && v->pq <= 8) {
|
|
v->condover = decode012(gb);
|
|
if(v->condover == CONDOVER_SELECT) {
|
|
status = bitplane_decoding(v->over_flags_plane, &v->overflg_is_raw, v);
|
|
if (status < 0) return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "CONDOVER plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
}
|
|
}
|
|
break;
|
|
case FF_P_TYPE:
|
|
if (v->extended_mv) v->mvrange = get_unary(gb, 0, 3);
|
|
else v->mvrange = 0;
|
|
v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
|
|
v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
|
|
v->range_x = 1 << (v->k_x - 1);
|
|
v->range_y = 1 << (v->k_y - 1);
|
|
|
|
if (v->pq < 5) v->tt_index = 0;
|
|
else if(v->pq < 13) v->tt_index = 1;
|
|
else v->tt_index = 2;
|
|
|
|
lowquant = (v->pq > 12) ? 0 : 1;
|
|
v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];
|
|
if (v->mv_mode == MV_PMODE_INTENSITY_COMP)
|
|
{
|
|
int scale, shift, i;
|
|
v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];
|
|
v->lumscale = get_bits(gb, 6);
|
|
v->lumshift = get_bits(gb, 6);
|
|
/* fill lookup tables for intensity compensation */
|
|
if(!v->lumscale) {
|
|
scale = -64;
|
|
shift = (255 - v->lumshift * 2) << 6;
|
|
if(v->lumshift > 31)
|
|
shift += 128 << 6;
|
|
} else {
|
|
scale = v->lumscale + 32;
|
|
if(v->lumshift > 31)
|
|
shift = (v->lumshift - 64) << 6;
|
|
else
|
|
shift = v->lumshift << 6;
|
|
}
|
|
for(i = 0; i < 256; i++) {
|
|
v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
|
|
v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
|
|
}
|
|
v->use_ic = 1;
|
|
}
|
|
if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
|
|
v->s.quarter_sample = 0;
|
|
else if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
|
|
if(v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
|
|
v->s.quarter_sample = 0;
|
|
else
|
|
v->s.quarter_sample = 1;
|
|
} else
|
|
v->s.quarter_sample = 1;
|
|
v->s.mspel = !(v->mv_mode == MV_PMODE_1MV_HPEL_BILIN || (v->mv_mode == MV_PMODE_INTENSITY_COMP && v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN));
|
|
|
|
if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
|
|
v->mv_mode2 == MV_PMODE_MIXED_MV)
|
|
|| v->mv_mode == MV_PMODE_MIXED_MV)
|
|
{
|
|
status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
|
|
if (status < 0) return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
} else {
|
|
v->mv_type_is_raw = 0;
|
|
memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
|
|
}
|
|
status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
|
|
if (status < 0) return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
|
|
/* Hopefully this is correct for P frames */
|
|
v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
|
|
v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
|
|
if (v->dquant)
|
|
{
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
|
|
vop_dquant_decoding(v);
|
|
}
|
|
|
|
v->ttfrm = 0; //FIXME Is that so ?
|
|
if (v->vstransform)
|
|
{
|
|
v->ttmbf = get_bits1(gb);
|
|
if (v->ttmbf)
|
|
{
|
|
v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
|
|
}
|
|
} else {
|
|
v->ttmbf = 1;
|
|
v->ttfrm = TT_8X8;
|
|
}
|
|
break;
|
|
case FF_B_TYPE:
|
|
if (v->extended_mv) v->mvrange = get_unary(gb, 0, 3);
|
|
else v->mvrange = 0;
|
|
v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
|
|
v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
|
|
v->range_x = 1 << (v->k_x - 1);
|
|
v->range_y = 1 << (v->k_y - 1);
|
|
|
|
if (v->pq < 5) v->tt_index = 0;
|
|
else if(v->pq < 13) v->tt_index = 1;
|
|
else v->tt_index = 2;
|
|
|
|
v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
|
|
v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
|
|
v->s.mspel = v->s.quarter_sample;
|
|
|
|
status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
|
|
if (status < 0) return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
|
|
if (status < 0) return -1;
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
|
|
v->s.mv_table_index = get_bits(gb, 2);
|
|
v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
|
|
|
|
if (v->dquant)
|
|
{
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
|
|
vop_dquant_decoding(v);
|
|
}
|
|
|
|
v->ttfrm = 0;
|
|
if (v->vstransform)
|
|
{
|
|
v->ttmbf = get_bits1(gb);
|
|
if (v->ttmbf)
|
|
{
|
|
v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
|
|
}
|
|
} else {
|
|
v->ttmbf = 1;
|
|
v->ttfrm = TT_8X8;
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* AC Syntax */
|
|
v->c_ac_table_index = decode012(gb);
|
|
if (v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_BI_TYPE)
|
|
{
|
|
v->y_ac_table_index = decode012(gb);
|
|
}
|
|
/* DC Syntax */
|
|
v->s.dc_table_index = get_bits1(gb);
|
|
if ((v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_BI_TYPE) && v->dquant) {
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
|
|
vop_dquant_decoding(v);
|
|
}
|
|
|
|
v->bi_type = 0;
|
|
if(v->s.pict_type == FF_BI_TYPE) {
|
|
v->s.pict_type = FF_B_TYPE;
|
|
v->bi_type = 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/***********************************************************************/
|
|
/**
|
|
* @defgroup vc1block VC-1 Block-level functions
|
|
* @see 7.1.4, p91 and 8.1.1.7, p(1)04
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @def GET_MQUANT
|
|
* @brief Get macroblock-level quantizer scale
|
|
*/
|
|
#define GET_MQUANT() \
|
|
if (v->dquantfrm) \
|
|
{ \
|
|
int edges = 0; \
|
|
if (v->dqprofile == DQPROFILE_ALL_MBS) \
|
|
{ \
|
|
if (v->dqbilevel) \
|
|
{ \
|
|
mquant = (get_bits1(gb)) ? v->altpq : v->pq; \
|
|
} \
|
|
else \
|
|
{ \
|
|
mqdiff = get_bits(gb, 3); \
|
|
if (mqdiff != 7) mquant = v->pq + mqdiff; \
|
|
else mquant = get_bits(gb, 5); \
|
|
} \
|
|
} \
|
|
if(v->dqprofile == DQPROFILE_SINGLE_EDGE) \
|
|
edges = 1 << v->dqsbedge; \
|
|
else if(v->dqprofile == DQPROFILE_DOUBLE_EDGES) \
|
|
edges = (3 << v->dqsbedge) % 15; \
|
|
else if(v->dqprofile == DQPROFILE_FOUR_EDGES) \
|
|
edges = 15; \
|
|
if((edges&1) && !s->mb_x) \
|
|
mquant = v->altpq; \
|
|
if((edges&2) && s->first_slice_line) \
|
|
mquant = v->altpq; \
|
|
if((edges&4) && s->mb_x == (s->mb_width - 1)) \
|
|
mquant = v->altpq; \
|
|
if((edges&8) && s->mb_y == (s->mb_height - 1)) \
|
|
mquant = v->altpq; \
|
|
}
|
|
|
|
/**
|
|
* @def GET_MVDATA(_dmv_x, _dmv_y)
|
|
* @brief Get MV differentials
|
|
* @see MVDATA decoding from 8.3.5.2, p(1)20
|
|
* @param _dmv_x Horizontal differential for decoded MV
|
|
* @param _dmv_y Vertical differential for decoded MV
|
|
*/
|
|
#define GET_MVDATA(_dmv_x, _dmv_y) \
|
|
index = 1 + get_vlc2(gb, ff_vc1_mv_diff_vlc[s->mv_table_index].table,\
|
|
VC1_MV_DIFF_VLC_BITS, 2); \
|
|
if (index > 36) \
|
|
{ \
|
|
mb_has_coeffs = 1; \
|
|
index -= 37; \
|
|
} \
|
|
else mb_has_coeffs = 0; \
|
|
s->mb_intra = 0; \
|
|
if (!index) { _dmv_x = _dmv_y = 0; } \
|
|
else if (index == 35) \
|
|
{ \
|
|
_dmv_x = get_bits(gb, v->k_x - 1 + s->quarter_sample); \
|
|
_dmv_y = get_bits(gb, v->k_y - 1 + s->quarter_sample); \
|
|
} \
|
|
else if (index == 36) \
|
|
{ \
|
|
_dmv_x = 0; \
|
|
_dmv_y = 0; \
|
|
s->mb_intra = 1; \
|
|
} \
|
|
else \
|
|
{ \
|
|
index1 = index%6; \
|
|
if (!s->quarter_sample && index1 == 5) val = 1; \
|
|
else val = 0; \
|
|
if(size_table[index1] - val > 0) \
|
|
val = get_bits(gb, size_table[index1] - val); \
|
|
else val = 0; \
|
|
sign = 0 - (val&1); \
|
|
_dmv_x = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
|
|
\
|
|
index1 = index/6; \
|
|
if (!s->quarter_sample && index1 == 5) val = 1; \
|
|
else val = 0; \
|
|
if(size_table[index1] - val > 0) \
|
|
val = get_bits(gb, size_table[index1] - val); \
|
|
else val = 0; \
|
|
sign = 0 - (val&1); \
|
|
_dmv_y = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
|
|
}
|
|
|
|
/** Predict and set motion vector
|
|
*/
|
|
static inline void vc1_pred_mv(MpegEncContext *s, int n, int dmv_x, int dmv_y, int mv1, int r_x, int r_y, uint8_t* is_intra)
|
|
{
|
|
int xy, wrap, off = 0;
|
|
int16_t *A, *B, *C;
|
|
int px, py;
|
|
int sum;
|
|
|
|
/* scale MV difference to be quad-pel */
|
|
dmv_x <<= 1 - s->quarter_sample;
|
|
dmv_y <<= 1 - s->quarter_sample;
|
|
|
|
wrap = s->b8_stride;
|
|
xy = s->block_index[n];
|
|
|
|
if(s->mb_intra){
|
|
s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = 0;
|
|
s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = 0;
|
|
s->current_picture.motion_val[1][xy][0] = 0;
|
|
s->current_picture.motion_val[1][xy][1] = 0;
|
|
if(mv1) { /* duplicate motion data for 1-MV block */
|
|
s->current_picture.motion_val[0][xy + 1][0] = 0;
|
|
s->current_picture.motion_val[0][xy + 1][1] = 0;
|
|
s->current_picture.motion_val[0][xy + wrap][0] = 0;
|
|
s->current_picture.motion_val[0][xy + wrap][1] = 0;
|
|
s->current_picture.motion_val[0][xy + wrap + 1][0] = 0;
|
|
s->current_picture.motion_val[0][xy + wrap + 1][1] = 0;
|
|
s->current_picture.motion_val[1][xy + 1][0] = 0;
|
|
s->current_picture.motion_val[1][xy + 1][1] = 0;
|
|
s->current_picture.motion_val[1][xy + wrap][0] = 0;
|
|
s->current_picture.motion_val[1][xy + wrap][1] = 0;
|
|
s->current_picture.motion_val[1][xy + wrap + 1][0] = 0;
|
|
s->current_picture.motion_val[1][xy + wrap + 1][1] = 0;
|
|
}
|
|
return;
|
|
}
|
|
|
|
C = s->current_picture.motion_val[0][xy - 1];
|
|
A = s->current_picture.motion_val[0][xy - wrap];
|
|
if(mv1)
|
|
off = (s->mb_x == (s->mb_width - 1)) ? -1 : 2;
|
|
else {
|
|
//in 4-MV mode different blocks have different B predictor position
|
|
switch(n){
|
|
case 0:
|
|
off = (s->mb_x > 0) ? -1 : 1;
|
|
break;
|
|
case 1:
|
|
off = (s->mb_x == (s->mb_width - 1)) ? -1 : 1;
|
|
break;
|
|
case 2:
|
|
off = 1;
|
|
break;
|
|
case 3:
|
|
off = -1;
|
|
}
|
|
}
|
|
B = s->current_picture.motion_val[0][xy - wrap + off];
|
|
|
|
if(!s->first_slice_line || (n==2 || n==3)) { // predictor A is not out of bounds
|
|
if(s->mb_width == 1) {
|
|
px = A[0];
|
|
py = A[1];
|
|
} else {
|
|
px = mid_pred(A[0], B[0], C[0]);
|
|
py = mid_pred(A[1], B[1], C[1]);
|
|
}
|
|
} else if(s->mb_x || (n==1 || n==3)) { // predictor C is not out of bounds
|
|
px = C[0];
|
|
py = C[1];
|
|
} else {
|
|
px = py = 0;
|
|
}
|
|
/* Pullback MV as specified in 8.3.5.3.4 */
|
|
{
|
|
int qx, qy, X, Y;
|
|
qx = (s->mb_x << 6) + ((n==1 || n==3) ? 32 : 0);
|
|
qy = (s->mb_y << 6) + ((n==2 || n==3) ? 32 : 0);
|
|
X = (s->mb_width << 6) - 4;
|
|
Y = (s->mb_height << 6) - 4;
|
|
if(mv1) {
|
|
if(qx + px < -60) px = -60 - qx;
|
|
if(qy + py < -60) py = -60 - qy;
|
|
} else {
|
|
if(qx + px < -28) px = -28 - qx;
|
|
if(qy + py < -28) py = -28 - qy;
|
|
}
|
|
if(qx + px > X) px = X - qx;
|
|
if(qy + py > Y) py = Y - qy;
|
|
}
|
|
/* Calculate hybrid prediction as specified in 8.3.5.3.5 */
|
|
if((!s->first_slice_line || (n==2 || n==3)) && (s->mb_x || (n==1 || n==3))) {
|
|
if(is_intra[xy - wrap])
|
|
sum = FFABS(px) + FFABS(py);
|
|
else
|
|
sum = FFABS(px - A[0]) + FFABS(py - A[1]);
|
|
if(sum > 32) {
|
|
if(get_bits1(&s->gb)) {
|
|
px = A[0];
|
|
py = A[1];
|
|
} else {
|
|
px = C[0];
|
|
py = C[1];
|
|
}
|
|
} else {
|
|
if(is_intra[xy - 1])
|
|
sum = FFABS(px) + FFABS(py);
|
|
else
|
|
sum = FFABS(px - C[0]) + FFABS(py - C[1]);
|
|
if(sum > 32) {
|
|
if(get_bits1(&s->gb)) {
|
|
px = A[0];
|
|
py = A[1];
|
|
} else {
|
|
px = C[0];
|
|
py = C[1];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
/* store MV using signed modulus of MV range defined in 4.11 */
|
|
s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = ((px + dmv_x + r_x) & ((r_x << 1) - 1)) - r_x;
|
|
s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = ((py + dmv_y + r_y) & ((r_y << 1) - 1)) - r_y;
|
|
if(mv1) { /* duplicate motion data for 1-MV block */
|
|
s->current_picture.motion_val[0][xy + 1][0] = s->current_picture.motion_val[0][xy][0];
|
|
s->current_picture.motion_val[0][xy + 1][1] = s->current_picture.motion_val[0][xy][1];
|
|
s->current_picture.motion_val[0][xy + wrap][0] = s->current_picture.motion_val[0][xy][0];
|
|
s->current_picture.motion_val[0][xy + wrap][1] = s->current_picture.motion_val[0][xy][1];
|
|
s->current_picture.motion_val[0][xy + wrap + 1][0] = s->current_picture.motion_val[0][xy][0];
|
|
s->current_picture.motion_val[0][xy + wrap + 1][1] = s->current_picture.motion_val[0][xy][1];
|
|
}
|
|
}
|
|
|
|
/** Motion compensation for direct or interpolated blocks in B-frames
|
|
*/
|
|
static void vc1_interp_mc(VC1Context *v)
|
|
{
|
|
MpegEncContext *s = &v->s;
|
|
DSPContext *dsp = &v->s.dsp;
|
|
uint8_t *srcY, *srcU, *srcV;
|
|
int dxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
|
|
|
|
if(!v->s.next_picture.data[0])return;
|
|
|
|
mx = s->mv[1][0][0];
|
|
my = s->mv[1][0][1];
|
|
uvmx = (mx + ((mx & 3) == 3)) >> 1;
|
|
uvmy = (my + ((my & 3) == 3)) >> 1;
|
|
if(v->fastuvmc) {
|
|
uvmx = uvmx + ((uvmx<0)?-(uvmx&1):(uvmx&1));
|
|
uvmy = uvmy + ((uvmy<0)?-(uvmy&1):(uvmy&1));
|
|
}
|
|
srcY = s->next_picture.data[0];
|
|
srcU = s->next_picture.data[1];
|
|
srcV = s->next_picture.data[2];
|
|
|
|
src_x = s->mb_x * 16 + (mx >> 2);
|
|
src_y = s->mb_y * 16 + (my >> 2);
|
|
uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
|
|
uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
|
|
|
|
if(v->profile != PROFILE_ADVANCED){
|
|
src_x = av_clip( src_x, -16, s->mb_width * 16);
|
|
src_y = av_clip( src_y, -16, s->mb_height * 16);
|
|
uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
|
|
uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
|
|
}else{
|
|
src_x = av_clip( src_x, -17, s->avctx->coded_width);
|
|
src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
|
|
uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
|
|
uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
|
|
}
|
|
|
|
srcY += src_y * s->linesize + src_x;
|
|
srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
|
|
srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
|
|
|
|
/* for grayscale we should not try to read from unknown area */
|
|
if(s->flags & CODEC_FLAG_GRAY) {
|
|
srcU = s->edge_emu_buffer + 18 * s->linesize;
|
|
srcV = s->edge_emu_buffer + 18 * s->linesize;
|
|
}
|
|
|
|
if(v->rangeredfrm
|
|
|| (unsigned)src_x > s->h_edge_pos - (mx&3) - 16
|
|
|| (unsigned)src_y > s->v_edge_pos - (my&3) - 16){
|
|
uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize;
|
|
|
|
srcY -= s->mspel * (1 + s->linesize);
|
|
ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 17+s->mspel*2, 17+s->mspel*2,
|
|
src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
|
|
srcY = s->edge_emu_buffer;
|
|
ff_emulated_edge_mc(uvbuf , srcU, s->uvlinesize, 8+1, 8+1,
|
|
uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
|
|
ff_emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, 8+1, 8+1,
|
|
uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
|
|
srcU = uvbuf;
|
|
srcV = uvbuf + 16;
|
|
/* if we deal with range reduction we need to scale source blocks */
|
|
if(v->rangeredfrm) {
|
|
int i, j;
|
|
uint8_t *src, *src2;
|
|
|
|
src = srcY;
|
|
for(j = 0; j < 17 + s->mspel*2; j++) {
|
|
for(i = 0; i < 17 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
|
|
src += s->linesize;
|
|
}
|
|
src = srcU; src2 = srcV;
|
|
for(j = 0; j < 9; j++) {
|
|
for(i = 0; i < 9; i++) {
|
|
src[i] = ((src[i] - 128) >> 1) + 128;
|
|
src2[i] = ((src2[i] - 128) >> 1) + 128;
|
|
}
|
|
src += s->uvlinesize;
|
|
src2 += s->uvlinesize;
|
|
}
|
|
}
|
|
srcY += s->mspel * (1 + s->linesize);
|
|
}
|
|
|
|
if(s->mspel) {
|
|
dxy = ((my & 3) << 2) | (mx & 3);
|
|
dsp->avg_vc1_mspel_pixels_tab[dxy](s->dest[0] , srcY , s->linesize, v->rnd);
|
|
dsp->avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8, srcY + 8, s->linesize, v->rnd);
|
|
srcY += s->linesize * 8;
|
|
dsp->avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize , srcY , s->linesize, v->rnd);
|
|
dsp->avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize + 8, srcY + 8, s->linesize, v->rnd);
|
|
} else { // hpel mc
|
|
dxy = (my & 2) | ((mx & 2) >> 1);
|
|
|
|
if(!v->rnd)
|
|
dsp->avg_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
|
|
else
|
|
dsp->avg_no_rnd_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
|
|
}
|
|
|
|
if(s->flags & CODEC_FLAG_GRAY) return;
|
|
/* Chroma MC always uses qpel blilinear */
|
|
uvmx = (uvmx&3)<<1;
|
|
uvmy = (uvmy&3)<<1;
|
|
if(!v->rnd){
|
|
dsp->avg_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
|
|
dsp->avg_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
|
|
}else{
|
|
dsp->avg_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
|
|
dsp->avg_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
|
|
}
|
|
}
|
|
|
|
static av_always_inline int scale_mv(int value, int bfrac, int inv, int qs)
|
|
{
|
|
int n = bfrac;
|
|
|
|
#if B_FRACTION_DEN==256
|
|
if(inv)
|
|
n -= 256;
|
|
if(!qs)
|
|
return 2 * ((value * n + 255) >> 9);
|
|
return (value * n + 128) >> 8;
|
|
#else
|
|
if(inv)
|
|
n -= B_FRACTION_DEN;
|
|
if(!qs)
|
|
return 2 * ((value * n + B_FRACTION_DEN - 1) / (2 * B_FRACTION_DEN));
|
|
return (value * n + B_FRACTION_DEN/2) / B_FRACTION_DEN;
|
|
#endif
|
|
}
|
|
|
|
/** Reconstruct motion vector for B-frame and do motion compensation
|
|
*/
|
|
static inline void vc1_b_mc(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mode)
|
|
{
|
|
if(v->use_ic) {
|
|
v->mv_mode2 = v->mv_mode;
|
|
v->mv_mode = MV_PMODE_INTENSITY_COMP;
|
|
}
|
|
if(direct) {
|
|
vc1_mc_1mv(v, 0);
|
|
vc1_interp_mc(v);
|
|
if(v->use_ic) v->mv_mode = v->mv_mode2;
|
|
return;
|
|
}
|
|
if(mode == BMV_TYPE_INTERPOLATED) {
|
|
vc1_mc_1mv(v, 0);
|
|
vc1_interp_mc(v);
|
|
if(v->use_ic) v->mv_mode = v->mv_mode2;
|
|
return;
|
|
}
|
|
|
|
if(v->use_ic && (mode == BMV_TYPE_BACKWARD)) v->mv_mode = v->mv_mode2;
|
|
vc1_mc_1mv(v, (mode == BMV_TYPE_BACKWARD));
|
|
if(v->use_ic) v->mv_mode = v->mv_mode2;
|
|
}
|
|
|
|
static inline void vc1_pred_b_mv(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mvtype)
|
|
{
|
|
MpegEncContext *s = &v->s;
|
|
int xy, wrap, off = 0;
|
|
int16_t *A, *B, *C;
|
|
int px, py;
|
|
int sum;
|
|
int r_x, r_y;
|
|
const uint8_t *is_intra = v->mb_type[0];
|
|
|
|
r_x = v->range_x;
|
|
r_y = v->range_y;
|
|
/* scale MV difference to be quad-pel */
|
|
dmv_x[0] <<= 1 - s->quarter_sample;
|
|
dmv_y[0] <<= 1 - s->quarter_sample;
|
|
dmv_x[1] <<= 1 - s->quarter_sample;
|
|
dmv_y[1] <<= 1 - s->quarter_sample;
|
|
|
|
wrap = s->b8_stride;
|
|
xy = s->block_index[0];
|
|
|
|
if(s->mb_intra) {
|
|
s->current_picture.motion_val[0][xy][0] =
|
|
s->current_picture.motion_val[0][xy][1] =
|
|
s->current_picture.motion_val[1][xy][0] =
|
|
s->current_picture.motion_val[1][xy][1] = 0;
|
|
return;
|
|
}
|
|
s->mv[0][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 0, s->quarter_sample);
|
|
s->mv[0][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 0, s->quarter_sample);
|
|
s->mv[1][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 1, s->quarter_sample);
|
|
s->mv[1][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 1, s->quarter_sample);
|
|
|
|
/* Pullback predicted motion vectors as specified in 8.4.5.4 */
|
|
s->mv[0][0][0] = av_clip(s->mv[0][0][0], -60 - (s->mb_x << 6), (s->mb_width << 6) - 4 - (s->mb_x << 6));
|
|
s->mv[0][0][1] = av_clip(s->mv[0][0][1], -60 - (s->mb_y << 6), (s->mb_height << 6) - 4 - (s->mb_y << 6));
|
|
s->mv[1][0][0] = av_clip(s->mv[1][0][0], -60 - (s->mb_x << 6), (s->mb_width << 6) - 4 - (s->mb_x << 6));
|
|
s->mv[1][0][1] = av_clip(s->mv[1][0][1], -60 - (s->mb_y << 6), (s->mb_height << 6) - 4 - (s->mb_y << 6));
|
|
if(direct) {
|
|
s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0];
|
|
s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1];
|
|
s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0];
|
|
s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1];
|
|
return;
|
|
}
|
|
|
|
if((mvtype == BMV_TYPE_FORWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) {
|
|
C = s->current_picture.motion_val[0][xy - 2];
|
|
A = s->current_picture.motion_val[0][xy - wrap*2];
|
|
off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
|
|
B = s->current_picture.motion_val[0][xy - wrap*2 + off];
|
|
|
|
if(!s->mb_x) C[0] = C[1] = 0;
|
|
if(!s->first_slice_line) { // predictor A is not out of bounds
|
|
if(s->mb_width == 1) {
|
|
px = A[0];
|
|
py = A[1];
|
|
} else {
|
|
px = mid_pred(A[0], B[0], C[0]);
|
|
py = mid_pred(A[1], B[1], C[1]);
|
|
}
|
|
} else if(s->mb_x) { // predictor C is not out of bounds
|
|
px = C[0];
|
|
py = C[1];
|
|
} else {
|
|
px = py = 0;
|
|
}
|
|
/* Pullback MV as specified in 8.3.5.3.4 */
|
|
{
|
|
int qx, qy, X, Y;
|
|
if(v->profile < PROFILE_ADVANCED) {
|
|
qx = (s->mb_x << 5);
|
|
qy = (s->mb_y << 5);
|
|
X = (s->mb_width << 5) - 4;
|
|
Y = (s->mb_height << 5) - 4;
|
|
if(qx + px < -28) px = -28 - qx;
|
|
if(qy + py < -28) py = -28 - qy;
|
|
if(qx + px > X) px = X - qx;
|
|
if(qy + py > Y) py = Y - qy;
|
|
} else {
|
|
qx = (s->mb_x << 6);
|
|
qy = (s->mb_y << 6);
|
|
X = (s->mb_width << 6) - 4;
|
|
Y = (s->mb_height << 6) - 4;
|
|
if(qx + px < -60) px = -60 - qx;
|
|
if(qy + py < -60) py = -60 - qy;
|
|
if(qx + px > X) px = X - qx;
|
|
if(qy + py > Y) py = Y - qy;
|
|
}
|
|
}
|
|
/* Calculate hybrid prediction as specified in 8.3.5.3.5 */
|
|
if(0 && !s->first_slice_line && s->mb_x) {
|
|
if(is_intra[xy - wrap])
|
|
sum = FFABS(px) + FFABS(py);
|
|
else
|
|
sum = FFABS(px - A[0]) + FFABS(py - A[1]);
|
|
if(sum > 32) {
|
|
if(get_bits1(&s->gb)) {
|
|
px = A[0];
|
|
py = A[1];
|
|
} else {
|
|
px = C[0];
|
|
py = C[1];
|
|
}
|
|
} else {
|
|
if(is_intra[xy - 2])
|
|
sum = FFABS(px) + FFABS(py);
|
|
else
|
|
sum = FFABS(px - C[0]) + FFABS(py - C[1]);
|
|
if(sum > 32) {
|
|
if(get_bits1(&s->gb)) {
|
|
px = A[0];
|
|
py = A[1];
|
|
} else {
|
|
px = C[0];
|
|
py = C[1];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
/* store MV using signed modulus of MV range defined in 4.11 */
|
|
s->mv[0][0][0] = ((px + dmv_x[0] + r_x) & ((r_x << 1) - 1)) - r_x;
|
|
s->mv[0][0][1] = ((py + dmv_y[0] + r_y) & ((r_y << 1) - 1)) - r_y;
|
|
}
|
|
if((mvtype == BMV_TYPE_BACKWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) {
|
|
C = s->current_picture.motion_val[1][xy - 2];
|
|
A = s->current_picture.motion_val[1][xy - wrap*2];
|
|
off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
|
|
B = s->current_picture.motion_val[1][xy - wrap*2 + off];
|
|
|
|
if(!s->mb_x) C[0] = C[1] = 0;
|
|
if(!s->first_slice_line) { // predictor A is not out of bounds
|
|
if(s->mb_width == 1) {
|
|
px = A[0];
|
|
py = A[1];
|
|
} else {
|
|
px = mid_pred(A[0], B[0], C[0]);
|
|
py = mid_pred(A[1], B[1], C[1]);
|
|
}
|
|
} else if(s->mb_x) { // predictor C is not out of bounds
|
|
px = C[0];
|
|
py = C[1];
|
|
} else {
|
|
px = py = 0;
|
|
}
|
|
/* Pullback MV as specified in 8.3.5.3.4 */
|
|
{
|
|
int qx, qy, X, Y;
|
|
if(v->profile < PROFILE_ADVANCED) {
|
|
qx = (s->mb_x << 5);
|
|
qy = (s->mb_y << 5);
|
|
X = (s->mb_width << 5) - 4;
|
|
Y = (s->mb_height << 5) - 4;
|
|
if(qx + px < -28) px = -28 - qx;
|
|
if(qy + py < -28) py = -28 - qy;
|
|
if(qx + px > X) px = X - qx;
|
|
if(qy + py > Y) py = Y - qy;
|
|
} else {
|
|
qx = (s->mb_x << 6);
|
|
qy = (s->mb_y << 6);
|
|
X = (s->mb_width << 6) - 4;
|
|
Y = (s->mb_height << 6) - 4;
|
|
if(qx + px < -60) px = -60 - qx;
|
|
if(qy + py < -60) py = -60 - qy;
|
|
if(qx + px > X) px = X - qx;
|
|
if(qy + py > Y) py = Y - qy;
|
|
}
|
|
}
|
|
/* Calculate hybrid prediction as specified in 8.3.5.3.5 */
|
|
if(0 && !s->first_slice_line && s->mb_x) {
|
|
if(is_intra[xy - wrap])
|
|
sum = FFABS(px) + FFABS(py);
|
|
else
|
|
sum = FFABS(px - A[0]) + FFABS(py - A[1]);
|
|
if(sum > 32) {
|
|
if(get_bits1(&s->gb)) {
|
|
px = A[0];
|
|
py = A[1];
|
|
} else {
|
|
px = C[0];
|
|
py = C[1];
|
|
}
|
|
} else {
|
|
if(is_intra[xy - 2])
|
|
sum = FFABS(px) + FFABS(py);
|
|
else
|
|
sum = FFABS(px - C[0]) + FFABS(py - C[1]);
|
|
if(sum > 32) {
|
|
if(get_bits1(&s->gb)) {
|
|
px = A[0];
|
|
py = A[1];
|
|
} else {
|
|
px = C[0];
|
|
py = C[1];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
/* store MV using signed modulus of MV range defined in 4.11 */
|
|
|
|
s->mv[1][0][0] = ((px + dmv_x[1] + r_x) & ((r_x << 1) - 1)) - r_x;
|
|
s->mv[1][0][1] = ((py + dmv_y[1] + r_y) & ((r_y << 1) - 1)) - r_y;
|
|
}
|
|
s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0];
|
|
s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1];
|
|
s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0];
|
|
s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1];
|
|
}
|
|
|
|
/** Get predicted DC value for I-frames only
|
|
* prediction dir: left=0, top=1
|
|
* @param s MpegEncContext
|
|
* @param overlap flag indicating that overlap filtering is used
|
|
* @param pq integer part of picture quantizer
|
|
* @param[in] n block index in the current MB
|
|
* @param dc_val_ptr Pointer to DC predictor
|
|
* @param dir_ptr Prediction direction for use in AC prediction
|
|
*/
|
|
static inline int vc1_i_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
|
|
int16_t **dc_val_ptr, int *dir_ptr)
|
|
{
|
|
int a, b, c, wrap, pred, scale;
|
|
int16_t *dc_val;
|
|
static const uint16_t dcpred[32] = {
|
|
-1, 1024, 512, 341, 256, 205, 171, 146, 128,
|
|
114, 102, 93, 85, 79, 73, 68, 64,
|
|
60, 57, 54, 51, 49, 47, 45, 43,
|
|
41, 39, 38, 37, 35, 34, 33
|
|
};
|
|
|
|
/* find prediction - wmv3_dc_scale always used here in fact */
|
|
if (n < 4) scale = s->y_dc_scale;
|
|
else scale = s->c_dc_scale;
|
|
|
|
wrap = s->block_wrap[n];
|
|
dc_val= s->dc_val[0] + s->block_index[n];
|
|
|
|
/* B A
|
|
* C X
|
|
*/
|
|
c = dc_val[ - 1];
|
|
b = dc_val[ - 1 - wrap];
|
|
a = dc_val[ - wrap];
|
|
|
|
if (pq < 9 || !overlap)
|
|
{
|
|
/* Set outer values */
|
|
if (s->first_slice_line && (n!=2 && n!=3)) b=a=dcpred[scale];
|
|
if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=dcpred[scale];
|
|
}
|
|
else
|
|
{
|
|
/* Set outer values */
|
|
if (s->first_slice_line && (n!=2 && n!=3)) b=a=0;
|
|
if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=0;
|
|
}
|
|
|
|
if (abs(a - b) <= abs(b - c)) {
|
|
pred = c;
|
|
*dir_ptr = 1;//left
|
|
} else {
|
|
pred = a;
|
|
*dir_ptr = 0;//top
|
|
}
|
|
|
|
/* update predictor */
|
|
*dc_val_ptr = &dc_val[0];
|
|
return pred;
|
|
}
|
|
|
|
|
|
/** Get predicted DC value
|
|
* prediction dir: left=0, top=1
|
|
* @param s MpegEncContext
|
|
* @param overlap flag indicating that overlap filtering is used
|
|
* @param pq integer part of picture quantizer
|
|
* @param[in] n block index in the current MB
|
|
* @param a_avail flag indicating top block availability
|
|
* @param c_avail flag indicating left block availability
|
|
* @param dc_val_ptr Pointer to DC predictor
|
|
* @param dir_ptr Prediction direction for use in AC prediction
|
|
*/
|
|
static inline int vc1_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
|
|
int a_avail, int c_avail,
|
|
int16_t **dc_val_ptr, int *dir_ptr)
|
|
{
|
|
int a, b, c, wrap, pred;
|
|
int16_t *dc_val;
|
|
int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
|
|
int q1, q2 = 0;
|
|
|
|
wrap = s->block_wrap[n];
|
|
dc_val= s->dc_val[0] + s->block_index[n];
|
|
|
|
/* B A
|
|
* C X
|
|
*/
|
|
c = dc_val[ - 1];
|
|
b = dc_val[ - 1 - wrap];
|
|
a = dc_val[ - wrap];
|
|
/* scale predictors if needed */
|
|
q1 = s->current_picture.qscale_table[mb_pos];
|
|
if(c_avail && (n!= 1 && n!=3)) {
|
|
q2 = s->current_picture.qscale_table[mb_pos - 1];
|
|
if(q2 && q2 != q1)
|
|
c = (c * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
|
|
}
|
|
if(a_avail && (n!= 2 && n!=3)) {
|
|
q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
|
|
if(q2 && q2 != q1)
|
|
a = (a * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
|
|
}
|
|
if(a_avail && c_avail && (n!=3)) {
|
|
int off = mb_pos;
|
|
if(n != 1) off--;
|
|
if(n != 2) off -= s->mb_stride;
|
|
q2 = s->current_picture.qscale_table[off];
|
|
if(q2 && q2 != q1)
|
|
b = (b * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
|
|
}
|
|
|
|
if(a_avail && c_avail) {
|
|
if(abs(a - b) <= abs(b - c)) {
|
|
pred = c;
|
|
*dir_ptr = 1;//left
|
|
} else {
|
|
pred = a;
|
|
*dir_ptr = 0;//top
|
|
}
|
|
} else if(a_avail) {
|
|
pred = a;
|
|
*dir_ptr = 0;//top
|
|
} else if(c_avail) {
|
|
pred = c;
|
|
*dir_ptr = 1;//left
|
|
} else {
|
|
pred = 0;
|
|
*dir_ptr = 1;//left
|
|
}
|
|
|
|
/* update predictor */
|
|
*dc_val_ptr = &dc_val[0];
|
|
return pred;
|
|
}
|
|
|
|
/** @} */ // Block group
|
|
|
|
/**
|
|
* @defgroup vc1_std_mb VC1 Macroblock-level functions in Simple/Main Profiles
|
|
* @see 7.1.4, p91 and 8.1.1.7, p(1)04
|
|
* @{
|
|
*/
|
|
|
|
static inline int vc1_coded_block_pred(MpegEncContext * s, int n, uint8_t **coded_block_ptr)
|
|
{
|
|
int xy, wrap, pred, a, b, c;
|
|
|
|
xy = s->block_index[n];
|
|
wrap = s->b8_stride;
|
|
|
|
/* B C
|
|
* A X
|
|
*/
|
|
a = s->coded_block[xy - 1 ];
|
|
b = s->coded_block[xy - 1 - wrap];
|
|
c = s->coded_block[xy - wrap];
|
|
|
|
if (b == c) {
|
|
pred = a;
|
|
} else {
|
|
pred = c;
|
|
}
|
|
|
|
/* store value */
|
|
*coded_block_ptr = &s->coded_block[xy];
|
|
|
|
return pred;
|
|
}
|
|
|
|
/**
|
|
* Decode one AC coefficient
|
|
* @param v The VC1 context
|
|
* @param last Last coefficient
|
|
* @param skip How much zero coefficients to skip
|
|
* @param value Decoded AC coefficient value
|
|
* @param codingset set of VLC to decode data
|
|
* @see 8.1.3.4
|
|
*/
|
|
static void vc1_decode_ac_coeff(VC1Context *v, int *last, int *skip, int *value, int codingset)
|
|
{
|
|
GetBitContext *gb = &v->s.gb;
|
|
int index, escape, run = 0, level = 0, lst = 0;
|
|
|
|
index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
|
|
if (index != vc1_ac_sizes[codingset] - 1) {
|
|
run = vc1_index_decode_table[codingset][index][0];
|
|
level = vc1_index_decode_table[codingset][index][1];
|
|
lst = index >= vc1_last_decode_table[codingset];
|
|
if(get_bits1(gb))
|
|
level = -level;
|
|
} else {
|
|
escape = decode210(gb);
|
|
if (escape != 2) {
|
|
index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
|
|
run = vc1_index_decode_table[codingset][index][0];
|
|
level = vc1_index_decode_table[codingset][index][1];
|
|
lst = index >= vc1_last_decode_table[codingset];
|
|
if(escape == 0) {
|
|
if(lst)
|
|
level += vc1_last_delta_level_table[codingset][run];
|
|
else
|
|
level += vc1_delta_level_table[codingset][run];
|
|
} else {
|
|
if(lst)
|
|
run += vc1_last_delta_run_table[codingset][level] + 1;
|
|
else
|
|
run += vc1_delta_run_table[codingset][level] + 1;
|
|
}
|
|
if(get_bits1(gb))
|
|
level = -level;
|
|
} else {
|
|
int sign;
|
|
lst = get_bits1(gb);
|
|
if(v->s.esc3_level_length == 0) {
|
|
if(v->pq < 8 || v->dquantfrm) { // table 59
|
|
v->s.esc3_level_length = get_bits(gb, 3);
|
|
if(!v->s.esc3_level_length)
|
|
v->s.esc3_level_length = get_bits(gb, 2) + 8;
|
|
} else { //table 60
|
|
v->s.esc3_level_length = get_unary(gb, 1, 6) + 2;
|
|
}
|
|
v->s.esc3_run_length = 3 + get_bits(gb, 2);
|
|
}
|
|
run = get_bits(gb, v->s.esc3_run_length);
|
|
sign = get_bits1(gb);
|
|
level = get_bits(gb, v->s.esc3_level_length);
|
|
if(sign)
|
|
level = -level;
|
|
}
|
|
}
|
|
|
|
*last = lst;
|
|
*skip = run;
|
|
*value = level;
|
|
}
|
|
|
|
/** Decode intra block in intra frames - should be faster than decode_intra_block
|
|
* @param v VC1Context
|
|
* @param block block to decode
|
|
* @param[in] n subblock index
|
|
* @param coded are AC coeffs present or not
|
|
* @param codingset set of VLC to decode data
|
|
*/
|
|
static int vc1_decode_i_block(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset)
|
|
{
|
|
GetBitContext *gb = &v->s.gb;
|
|
MpegEncContext *s = &v->s;
|
|
int dc_pred_dir = 0; /* Direction of the DC prediction used */
|
|
int i;
|
|
int16_t *dc_val;
|
|
int16_t *ac_val, *ac_val2;
|
|
int dcdiff;
|
|
|
|
/* Get DC differential */
|
|
if (n < 4) {
|
|
dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
|
|
} else {
|
|
dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
|
|
}
|
|
if (dcdiff < 0){
|
|
av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
|
|
return -1;
|
|
}
|
|
if (dcdiff)
|
|
{
|
|
if (dcdiff == 119 /* ESC index value */)
|
|
{
|
|
/* TODO: Optimize */
|
|
if (v->pq == 1) dcdiff = get_bits(gb, 10);
|
|
else if (v->pq == 2) dcdiff = get_bits(gb, 9);
|
|
else dcdiff = get_bits(gb, 8);
|
|
}
|
|
else
|
|
{
|
|
if (v->pq == 1)
|
|
dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
|
|
else if (v->pq == 2)
|
|
dcdiff = (dcdiff<<1) + get_bits1(gb) - 1;
|
|
}
|
|
if (get_bits1(gb))
|
|
dcdiff = -dcdiff;
|
|
}
|
|
|
|
/* Prediction */
|
|
dcdiff += vc1_i_pred_dc(&v->s, v->overlap, v->pq, n, &dc_val, &dc_pred_dir);
|
|
*dc_val = dcdiff;
|
|
|
|
/* Store the quantized DC coeff, used for prediction */
|
|
if (n < 4) {
|
|
block[0] = dcdiff * s->y_dc_scale;
|
|
} else {
|
|
block[0] = dcdiff * s->c_dc_scale;
|
|
}
|
|
/* Skip ? */
|
|
if (!coded) {
|
|
goto not_coded;
|
|
}
|
|
|
|
//AC Decoding
|
|
i = 1;
|
|
|
|
{
|
|
int last = 0, skip, value;
|
|
const int8_t *zz_table;
|
|
int scale;
|
|
int k;
|
|
|
|
scale = v->pq * 2 + v->halfpq;
|
|
|
|
if(v->s.ac_pred) {
|
|
if(!dc_pred_dir)
|
|
zz_table = wmv1_scantable[2];
|
|
else
|
|
zz_table = wmv1_scantable[3];
|
|
} else
|
|
zz_table = wmv1_scantable[1];
|
|
|
|
ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
|
|
ac_val2 = ac_val;
|
|
if(dc_pred_dir) //left
|
|
ac_val -= 16;
|
|
else //top
|
|
ac_val -= 16 * s->block_wrap[n];
|
|
|
|
while (!last) {
|
|
vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
|
|
i += skip;
|
|
if(i > 63)
|
|
break;
|
|
block[zz_table[i++]] = value;
|
|
}
|
|
|
|
/* apply AC prediction if needed */
|
|
if(s->ac_pred) {
|
|
if(dc_pred_dir) { //left
|
|
for(k = 1; k < 8; k++)
|
|
block[k << 3] += ac_val[k];
|
|
} else { //top
|
|
for(k = 1; k < 8; k++)
|
|
block[k] += ac_val[k + 8];
|
|
}
|
|
}
|
|
/* save AC coeffs for further prediction */
|
|
for(k = 1; k < 8; k++) {
|
|
ac_val2[k] = block[k << 3];
|
|
ac_val2[k + 8] = block[k];
|
|
}
|
|
|
|
/* scale AC coeffs */
|
|
for(k = 1; k < 64; k++)
|
|
if(block[k]) {
|
|
block[k] *= scale;
|
|
if(!v->pquantizer)
|
|
block[k] += (block[k] < 0) ? -v->pq : v->pq;
|
|
}
|
|
|
|
if(s->ac_pred) i = 63;
|
|
}
|
|
|
|
not_coded:
|
|
if(!coded) {
|
|
int k, scale;
|
|
ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
|
|
ac_val2 = ac_val;
|
|
|
|
i = 0;
|
|
scale = v->pq * 2 + v->halfpq;
|
|
memset(ac_val2, 0, 16 * 2);
|
|
if(dc_pred_dir) {//left
|
|
ac_val -= 16;
|
|
if(s->ac_pred)
|
|
memcpy(ac_val2, ac_val, 8 * 2);
|
|
} else {//top
|
|
ac_val -= 16 * s->block_wrap[n];
|
|
if(s->ac_pred)
|
|
memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
|
|
}
|
|
|
|
/* apply AC prediction if needed */
|
|
if(s->ac_pred) {
|
|
if(dc_pred_dir) { //left
|
|
for(k = 1; k < 8; k++) {
|
|
block[k << 3] = ac_val[k] * scale;
|
|
if(!v->pquantizer && block[k << 3])
|
|
block[k << 3] += (block[k << 3] < 0) ? -v->pq : v->pq;
|
|
}
|
|
} else { //top
|
|
for(k = 1; k < 8; k++) {
|
|
block[k] = ac_val[k + 8] * scale;
|
|
if(!v->pquantizer && block[k])
|
|
block[k] += (block[k] < 0) ? -v->pq : v->pq;
|
|
}
|
|
}
|
|
i = 63;
|
|
}
|
|
}
|
|
s->block_last_index[n] = i;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/** Decode intra block in intra frames - should be faster than decode_intra_block
|
|
* @param v VC1Context
|
|
* @param block block to decode
|
|
* @param[in] n subblock number
|
|
* @param coded are AC coeffs present or not
|
|
* @param codingset set of VLC to decode data
|
|
* @param mquant quantizer value for this macroblock
|
|
*/
|
|
static int vc1_decode_i_block_adv(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset, int mquant)
|
|
{
|
|
GetBitContext *gb = &v->s.gb;
|
|
MpegEncContext *s = &v->s;
|
|
int dc_pred_dir = 0; /* Direction of the DC prediction used */
|
|
int i;
|
|
int16_t *dc_val;
|
|
int16_t *ac_val, *ac_val2;
|
|
int dcdiff;
|
|
int a_avail = v->a_avail, c_avail = v->c_avail;
|
|
int use_pred = s->ac_pred;
|
|
int scale;
|
|
int q1, q2 = 0;
|
|
int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
|
|
|
|
/* Get DC differential */
|
|
if (n < 4) {
|
|
dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
|
|
} else {
|
|
dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
|
|
}
|
|
if (dcdiff < 0){
|
|
av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
|
|
return -1;
|
|
}
|
|
if (dcdiff)
|
|
{
|
|
if (dcdiff == 119 /* ESC index value */)
|
|
{
|
|
/* TODO: Optimize */
|
|
if (mquant == 1) dcdiff = get_bits(gb, 10);
|
|
else if (mquant == 2) dcdiff = get_bits(gb, 9);
|
|
else dcdiff = get_bits(gb, 8);
|
|
}
|
|
else
|
|
{
|
|
if (mquant == 1)
|
|
dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
|
|
else if (mquant == 2)
|
|
dcdiff = (dcdiff<<1) + get_bits1(gb) - 1;
|
|
}
|
|
if (get_bits1(gb))
|
|
dcdiff = -dcdiff;
|
|
}
|
|
|
|
/* Prediction */
|
|
dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, v->a_avail, v->c_avail, &dc_val, &dc_pred_dir);
|
|
*dc_val = dcdiff;
|
|
|
|
/* Store the quantized DC coeff, used for prediction */
|
|
if (n < 4) {
|
|
block[0] = dcdiff * s->y_dc_scale;
|
|
} else {
|
|
block[0] = dcdiff * s->c_dc_scale;
|
|
}
|
|
|
|
//AC Decoding
|
|
i = 1;
|
|
|
|
/* check if AC is needed at all */
|
|
if(!a_avail && !c_avail) use_pred = 0;
|
|
ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
|
|
ac_val2 = ac_val;
|
|
|
|
scale = mquant * 2 + ((mquant == v->pq) ? v->halfpq : 0);
|
|
|
|
if(dc_pred_dir) //left
|
|
ac_val -= 16;
|
|
else //top
|
|
ac_val -= 16 * s->block_wrap[n];
|
|
|
|
q1 = s->current_picture.qscale_table[mb_pos];
|
|
if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1];
|
|
if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
|
|
if(dc_pred_dir && n==1) q2 = q1;
|
|
if(!dc_pred_dir && n==2) q2 = q1;
|
|
if(n==3) q2 = q1;
|
|
|
|
if(coded) {
|
|
int last = 0, skip, value;
|
|
const int8_t *zz_table;
|
|
int k;
|
|
|
|
if(v->s.ac_pred) {
|
|
if(!dc_pred_dir)
|
|
zz_table = wmv1_scantable[2];
|
|
else
|
|
zz_table = wmv1_scantable[3];
|
|
} else
|
|
zz_table = wmv1_scantable[1];
|
|
|
|
while (!last) {
|
|
vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
|
|
i += skip;
|
|
if(i > 63)
|
|
break;
|
|
block[zz_table[i++]] = value;
|
|
}
|
|
|
|
/* apply AC prediction if needed */
|
|
if(use_pred) {
|
|
/* scale predictors if needed*/
|
|
if(q2 && q1!=q2) {
|
|
q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
|
|
q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
|
|
|
|
if(dc_pred_dir) { //left
|
|
for(k = 1; k < 8; k++)
|
|
block[k << 3] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
|
|
} else { //top
|
|
for(k = 1; k < 8; k++)
|
|
block[k] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
|
|
}
|
|
} else {
|
|
if(dc_pred_dir) { //left
|
|
for(k = 1; k < 8; k++)
|
|
block[k << 3] += ac_val[k];
|
|
} else { //top
|
|
for(k = 1; k < 8; k++)
|
|
block[k] += ac_val[k + 8];
|
|
}
|
|
}
|
|
}
|
|
/* save AC coeffs for further prediction */
|
|
for(k = 1; k < 8; k++) {
|
|
ac_val2[k] = block[k << 3];
|
|
ac_val2[k + 8] = block[k];
|
|
}
|
|
|
|
/* scale AC coeffs */
|
|
for(k = 1; k < 64; k++)
|
|
if(block[k]) {
|
|
block[k] *= scale;
|
|
if(!v->pquantizer)
|
|
block[k] += (block[k] < 0) ? -mquant : mquant;
|
|
}
|
|
|
|
if(use_pred) i = 63;
|
|
} else { // no AC coeffs
|
|
int k;
|
|
|
|
memset(ac_val2, 0, 16 * 2);
|
|
if(dc_pred_dir) {//left
|
|
if(use_pred) {
|
|
memcpy(ac_val2, ac_val, 8 * 2);
|
|
if(q2 && q1!=q2) {
|
|
q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
|
|
q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
|
|
for(k = 1; k < 8; k++)
|
|
ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
|
|
}
|
|
}
|
|
} else {//top
|
|
if(use_pred) {
|
|
memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
|
|
if(q2 && q1!=q2) {
|
|
q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
|
|
q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
|
|
for(k = 1; k < 8; k++)
|
|
ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* apply AC prediction if needed */
|
|
if(use_pred) {
|
|
if(dc_pred_dir) { //left
|
|
for(k = 1; k < 8; k++) {
|
|
block[k << 3] = ac_val2[k] * scale;
|
|
if(!v->pquantizer && block[k << 3])
|
|
block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant;
|
|
}
|
|
} else { //top
|
|
for(k = 1; k < 8; k++) {
|
|
block[k] = ac_val2[k + 8] * scale;
|
|
if(!v->pquantizer && block[k])
|
|
block[k] += (block[k] < 0) ? -mquant : mquant;
|
|
}
|
|
}
|
|
i = 63;
|
|
}
|
|
}
|
|
s->block_last_index[n] = i;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/** Decode intra block in inter frames - more generic version than vc1_decode_i_block
|
|
* @param v VC1Context
|
|
* @param block block to decode
|
|
* @param[in] n subblock index
|
|
* @param coded are AC coeffs present or not
|
|
* @param mquant block quantizer
|
|
* @param codingset set of VLC to decode data
|
|
*/
|
|
static int vc1_decode_intra_block(VC1Context *v, DCTELEM block[64], int n, int coded, int mquant, int codingset)
|
|
{
|
|
GetBitContext *gb = &v->s.gb;
|
|
MpegEncContext *s = &v->s;
|
|
int dc_pred_dir = 0; /* Direction of the DC prediction used */
|
|
int i;
|
|
int16_t *dc_val;
|
|
int16_t *ac_val, *ac_val2;
|
|
int dcdiff;
|
|
int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
|
|
int a_avail = v->a_avail, c_avail = v->c_avail;
|
|
int use_pred = s->ac_pred;
|
|
int scale;
|
|
int q1, q2 = 0;
|
|
|
|
/* XXX: Guard against dumb values of mquant */
|
|
mquant = (mquant < 1) ? 0 : ( (mquant>31) ? 31 : mquant );
|
|
|
|
/* Set DC scale - y and c use the same */
|
|
s->y_dc_scale = s->y_dc_scale_table[mquant];
|
|
s->c_dc_scale = s->c_dc_scale_table[mquant];
|
|
|
|
/* Get DC differential */
|
|
if (n < 4) {
|
|
dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
|
|
} else {
|
|
dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
|
|
}
|
|
if (dcdiff < 0){
|
|
av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
|
|
return -1;
|
|
}
|
|
if (dcdiff)
|
|
{
|
|
if (dcdiff == 119 /* ESC index value */)
|
|
{
|
|
/* TODO: Optimize */
|
|
if (mquant == 1) dcdiff = get_bits(gb, 10);
|
|
else if (mquant == 2) dcdiff = get_bits(gb, 9);
|
|
else dcdiff = get_bits(gb, 8);
|
|
}
|
|
else
|
|
{
|
|
if (mquant == 1)
|
|
dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
|
|
else if (mquant == 2)
|
|
dcdiff = (dcdiff<<1) + get_bits1(gb) - 1;
|
|
}
|
|
if (get_bits1(gb))
|
|
dcdiff = -dcdiff;
|
|
}
|
|
|
|
/* Prediction */
|
|
dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, a_avail, c_avail, &dc_val, &dc_pred_dir);
|
|
*dc_val = dcdiff;
|
|
|
|
/* Store the quantized DC coeff, used for prediction */
|
|
|
|
if (n < 4) {
|
|
block[0] = dcdiff * s->y_dc_scale;
|
|
} else {
|
|
block[0] = dcdiff * s->c_dc_scale;
|
|
}
|
|
|
|
//AC Decoding
|
|
i = 1;
|
|
|
|
/* check if AC is needed at all and adjust direction if needed */
|
|
if(!a_avail) dc_pred_dir = 1;
|
|
if(!c_avail) dc_pred_dir = 0;
|
|
if(!a_avail && !c_avail) use_pred = 0;
|
|
ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
|
|
ac_val2 = ac_val;
|
|
|
|
scale = mquant * 2 + v->halfpq;
|
|
|
|
if(dc_pred_dir) //left
|
|
ac_val -= 16;
|
|
else //top
|
|
ac_val -= 16 * s->block_wrap[n];
|
|
|
|
q1 = s->current_picture.qscale_table[mb_pos];
|
|
if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1];
|
|
if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
|
|
if(dc_pred_dir && n==1) q2 = q1;
|
|
if(!dc_pred_dir && n==2) q2 = q1;
|
|
if(n==3) q2 = q1;
|
|
|
|
if(coded) {
|
|
int last = 0, skip, value;
|
|
const int8_t *zz_table;
|
|
int k;
|
|
|
|
zz_table = wmv1_scantable[0];
|
|
|
|
while (!last) {
|
|
vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
|
|
i += skip;
|
|
if(i > 63)
|
|
break;
|
|
block[zz_table[i++]] = value;
|
|
}
|
|
|
|
/* apply AC prediction if needed */
|
|
if(use_pred) {
|
|
/* scale predictors if needed*/
|
|
if(q2 && q1!=q2) {
|
|
q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
|
|
q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
|
|
|
|
if(dc_pred_dir) { //left
|
|
for(k = 1; k < 8; k++)
|
|
block[k << 3] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
|
|
} else { //top
|
|
for(k = 1; k < 8; k++)
|
|
block[k] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
|
|
}
|
|
} else {
|
|
if(dc_pred_dir) { //left
|
|
for(k = 1; k < 8; k++)
|
|
block[k << 3] += ac_val[k];
|
|
} else { //top
|
|
for(k = 1; k < 8; k++)
|
|
block[k] += ac_val[k + 8];
|
|
}
|
|
}
|
|
}
|
|
/* save AC coeffs for further prediction */
|
|
for(k = 1; k < 8; k++) {
|
|
ac_val2[k] = block[k << 3];
|
|
ac_val2[k + 8] = block[k];
|
|
}
|
|
|
|
/* scale AC coeffs */
|
|
for(k = 1; k < 64; k++)
|
|
if(block[k]) {
|
|
block[k] *= scale;
|
|
if(!v->pquantizer)
|
|
block[k] += (block[k] < 0) ? -mquant : mquant;
|
|
}
|
|
|
|
if(use_pred) i = 63;
|
|
} else { // no AC coeffs
|
|
int k;
|
|
|
|
memset(ac_val2, 0, 16 * 2);
|
|
if(dc_pred_dir) {//left
|
|
if(use_pred) {
|
|
memcpy(ac_val2, ac_val, 8 * 2);
|
|
if(q2 && q1!=q2) {
|
|
q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
|
|
q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
|
|
for(k = 1; k < 8; k++)
|
|
ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
|
|
}
|
|
}
|
|
} else {//top
|
|
if(use_pred) {
|
|
memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
|
|
if(q2 && q1!=q2) {
|
|
q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
|
|
q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
|
|
for(k = 1; k < 8; k++)
|
|
ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* apply AC prediction if needed */
|
|
if(use_pred) {
|
|
if(dc_pred_dir) { //left
|
|
for(k = 1; k < 8; k++) {
|
|
block[k << 3] = ac_val2[k] * scale;
|
|
if(!v->pquantizer && block[k << 3])
|
|
block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant;
|
|
}
|
|
} else { //top
|
|
for(k = 1; k < 8; k++) {
|
|
block[k] = ac_val2[k + 8] * scale;
|
|
if(!v->pquantizer && block[k])
|
|
block[k] += (block[k] < 0) ? -mquant : mquant;
|
|
}
|
|
}
|
|
i = 63;
|
|
}
|
|
}
|
|
s->block_last_index[n] = i;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/** Decode P block
|
|
*/
|
|
static int vc1_decode_p_block(VC1Context *v, DCTELEM block[64], int n, int mquant, int ttmb, int first_block,
|
|
uint8_t *dst, int linesize, int skip_block, int apply_filter, int cbp_top, int cbp_left)
|
|
{
|
|
MpegEncContext *s = &v->s;
|
|
GetBitContext *gb = &s->gb;
|
|
int i, j;
|
|
int subblkpat = 0;
|
|
int scale, off, idx, last, skip, value;
|
|
int ttblk = ttmb & 7;
|
|
int pat = 0;
|
|
|
|
if(ttmb == -1) {
|
|
ttblk = ff_vc1_ttblk_to_tt[v->tt_index][get_vlc2(gb, ff_vc1_ttblk_vlc[v->tt_index].table, VC1_TTBLK_VLC_BITS, 1)];
|
|
}
|
|
if(ttblk == TT_4X4) {
|
|
subblkpat = ~(get_vlc2(gb, ff_vc1_subblkpat_vlc[v->tt_index].table, VC1_SUBBLKPAT_VLC_BITS, 1) + 1);
|
|
}
|
|
if((ttblk != TT_8X8 && ttblk != TT_4X4) && (v->ttmbf || (ttmb != -1 && (ttmb & 8) && !first_block))) {
|
|
subblkpat = decode012(gb);
|
|
if(subblkpat) subblkpat ^= 3; //swap decoded pattern bits
|
|
if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) ttblk = TT_8X4;
|
|
if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) ttblk = TT_4X8;
|
|
}
|
|
scale = 2 * mquant + ((v->pq == mquant) ? v->halfpq : 0);
|
|
|
|
// convert transforms like 8X4_TOP to generic TT and SUBBLKPAT
|
|
if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) {
|
|
subblkpat = 2 - (ttblk == TT_8X4_TOP);
|
|
ttblk = TT_8X4;
|
|
}
|
|
if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) {
|
|
subblkpat = 2 - (ttblk == TT_4X8_LEFT);
|
|
ttblk = TT_4X8;
|
|
}
|
|
switch(ttblk) {
|
|
case TT_8X8:
|
|
pat = 0xF;
|
|
i = 0;
|
|
last = 0;
|
|
while (!last) {
|
|
vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
|
|
i += skip;
|
|
if(i > 63)
|
|
break;
|
|
idx = wmv1_scantable[0][i++];
|
|
block[idx] = value * scale;
|
|
if(!v->pquantizer)
|
|
block[idx] += (block[idx] < 0) ? -mquant : mquant;
|
|
}
|
|
if(!skip_block){
|
|
s->dsp.vc1_inv_trans_8x8(block);
|
|
s->dsp.add_pixels_clamped(block, dst, linesize);
|
|
if(apply_filter && cbp_top & 0xC)
|
|
s->dsp.vc1_v_loop_filter8(dst, linesize, v->pq);
|
|
if(apply_filter && cbp_left & 0xA)
|
|
s->dsp.vc1_h_loop_filter8(dst, linesize, v->pq);
|
|
}
|
|
break;
|
|
case TT_4X4:
|
|
pat = ~subblkpat & 0xF;
|
|
for(j = 0; j < 4; j++) {
|
|
last = subblkpat & (1 << (3 - j));
|
|
i = 0;
|
|
off = (j & 1) * 4 + (j & 2) * 16;
|
|
while (!last) {
|
|
vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
|
|
i += skip;
|
|
if(i > 15)
|
|
break;
|
|
idx = ff_vc1_simple_progressive_4x4_zz[i++];
|
|
block[idx + off] = value * scale;
|
|
if(!v->pquantizer)
|
|
block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
|
|
}
|
|
if(!(subblkpat & (1 << (3 - j))) && !skip_block){
|
|
s->dsp.vc1_inv_trans_4x4(dst + (j&1)*4 + (j&2)*2*linesize, linesize, block + off);
|
|
if(apply_filter && (j&2 ? pat & (1<<(j-2)) : (cbp_top & (1 << (j + 2)))))
|
|
s->dsp.vc1_v_loop_filter4(dst + (j&1)*4 + (j&2)*2*linesize, linesize, v->pq);
|
|
if(apply_filter && (j&1 ? pat & (1<<(j-1)) : (cbp_left & (1 << (j + 1)))))
|
|
s->dsp.vc1_h_loop_filter4(dst + (j&1)*4 + (j&2)*2*linesize, linesize, v->pq);
|
|
}
|
|
}
|
|
break;
|
|
case TT_8X4:
|
|
pat = ~((subblkpat & 2)*6 + (subblkpat & 1)*3) & 0xF;
|
|
for(j = 0; j < 2; j++) {
|
|
last = subblkpat & (1 << (1 - j));
|
|
i = 0;
|
|
off = j * 32;
|
|
while (!last) {
|
|
vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
|
|
i += skip;
|
|
if(i > 31)
|
|
break;
|
|
idx = v->zz_8x4[i++]+off;
|
|
block[idx] = value * scale;
|
|
if(!v->pquantizer)
|
|
block[idx] += (block[idx] < 0) ? -mquant : mquant;
|
|
}
|
|
if(!(subblkpat & (1 << (1 - j))) && !skip_block){
|
|
s->dsp.vc1_inv_trans_8x4(dst + j*4*linesize, linesize, block + off);
|
|
if(apply_filter && j ? pat & 0x3 : (cbp_top & 0xC))
|
|
s->dsp.vc1_v_loop_filter8(dst + j*4*linesize, linesize, v->pq);
|
|
if(apply_filter && cbp_left & (2 << j))
|
|
s->dsp.vc1_h_loop_filter4(dst + j*4*linesize, linesize, v->pq);
|
|
}
|
|
}
|
|
break;
|
|
case TT_4X8:
|
|
pat = ~(subblkpat*5) & 0xF;
|
|
for(j = 0; j < 2; j++) {
|
|
last = subblkpat & (1 << (1 - j));
|
|
i = 0;
|
|
off = j * 4;
|
|
while (!last) {
|
|
vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
|
|
i += skip;
|
|
if(i > 31)
|
|
break;
|
|
idx = v->zz_4x8[i++]+off;
|
|
block[idx] = value * scale;
|
|
if(!v->pquantizer)
|
|
block[idx] += (block[idx] < 0) ? -mquant : mquant;
|
|
}
|
|
if(!(subblkpat & (1 << (1 - j))) && !skip_block){
|
|
s->dsp.vc1_inv_trans_4x8(dst + j*4, linesize, block + off);
|
|
if(apply_filter && cbp_top & (2 << j))
|
|
s->dsp.vc1_v_loop_filter4(dst + j*4, linesize, v->pq);
|
|
if(apply_filter && j ? pat & 0x5 : (cbp_left & 0xA))
|
|
s->dsp.vc1_h_loop_filter8(dst + j*4, linesize, v->pq);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
return pat;
|
|
}
|
|
|
|
/** @} */ // Macroblock group
|
|
|
|
static const int size_table [6] = { 0, 2, 3, 4, 5, 8 };
|
|
static const int offset_table[6] = { 0, 1, 3, 7, 15, 31 };
|
|
|
|
/** Decode one P-frame MB (in Simple/Main profile)
|
|
*/
|
|
static int vc1_decode_p_mb(VC1Context *v)
|
|
{
|
|
MpegEncContext *s = &v->s;
|
|
GetBitContext *gb = &s->gb;
|
|
int i, j;
|
|
int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
|
|
int cbp; /* cbp decoding stuff */
|
|
int mqdiff, mquant; /* MB quantization */
|
|
int ttmb = v->ttfrm; /* MB Transform type */
|
|
|
|
int mb_has_coeffs = 1; /* last_flag */
|
|
int dmv_x, dmv_y; /* Differential MV components */
|
|
int index, index1; /* LUT indexes */
|
|
int val, sign; /* temp values */
|
|
int first_block = 1;
|
|
int dst_idx, off;
|
|
int skipped, fourmv;
|
|
int block_cbp = 0, pat;
|
|
int apply_loop_filter;
|
|
|
|
mquant = v->pq; /* Loosy initialization */
|
|
|
|
if (v->mv_type_is_raw)
|
|
fourmv = get_bits1(gb);
|
|
else
|
|
fourmv = v->mv_type_mb_plane[mb_pos];
|
|
if (v->skip_is_raw)
|
|
skipped = get_bits1(gb);
|
|
else
|
|
skipped = v->s.mbskip_table[mb_pos];
|
|
|
|
s->dsp.clear_blocks(s->block[0]);
|
|
|
|
apply_loop_filter = s->loop_filter && !(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY);
|
|
if (!fourmv) /* 1MV mode */
|
|
{
|
|
if (!skipped)
|
|
{
|
|
GET_MVDATA(dmv_x, dmv_y);
|
|
|
|
if (s->mb_intra) {
|
|
s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
|
|
s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
|
|
}
|
|
s->current_picture.mb_type[mb_pos] = s->mb_intra ? MB_TYPE_INTRA : MB_TYPE_16x16;
|
|
vc1_pred_mv(s, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0]);
|
|
|
|
/* FIXME Set DC val for inter block ? */
|
|
if (s->mb_intra && !mb_has_coeffs)
|
|
{
|
|
GET_MQUANT();
|
|
s->ac_pred = get_bits1(gb);
|
|
cbp = 0;
|
|
}
|
|
else if (mb_has_coeffs)
|
|
{
|
|
if (s->mb_intra) s->ac_pred = get_bits1(gb);
|
|
cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
|
|
GET_MQUANT();
|
|
}
|
|
else
|
|
{
|
|
mquant = v->pq;
|
|
cbp = 0;
|
|
}
|
|
s->current_picture.qscale_table[mb_pos] = mquant;
|
|
|
|
if (!v->ttmbf && !s->mb_intra && mb_has_coeffs)
|
|
ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table,
|
|
VC1_TTMB_VLC_BITS, 2);
|
|
if(!s->mb_intra) vc1_mc_1mv(v, 0);
|
|
dst_idx = 0;
|
|
for (i=0; i<6; i++)
|
|
{
|
|
s->dc_val[0][s->block_index[i]] = 0;
|
|
dst_idx += i >> 2;
|
|
val = ((cbp >> (5 - i)) & 1);
|
|
off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
|
|
v->mb_type[0][s->block_index[i]] = s->mb_intra;
|
|
if(s->mb_intra) {
|
|
/* check if prediction blocks A and C are available */
|
|
v->a_avail = v->c_avail = 0;
|
|
if(i == 2 || i == 3 || !s->first_slice_line)
|
|
v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
|
|
if(i == 1 || i == 3 || s->mb_x)
|
|
v->c_avail = v->mb_type[0][s->block_index[i] - 1];
|
|
|
|
vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset);
|
|
if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
|
|
s->dsp.vc1_inv_trans_8x8(s->block[i]);
|
|
if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
|
|
s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
|
|
if(v->pq >= 9 && v->overlap) {
|
|
if(v->c_avail)
|
|
s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
|
|
if(v->a_avail)
|
|
s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
|
|
}
|
|
if(apply_loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){
|
|
int left_cbp, top_cbp;
|
|
if(i & 4){
|
|
left_cbp = v->cbp[s->mb_x - 1] >> (i * 4);
|
|
top_cbp = v->cbp[s->mb_x - s->mb_stride] >> (i * 4);
|
|
}else{
|
|
left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1] >> ((i+1)*4));
|
|
top_cbp = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4));
|
|
}
|
|
if(left_cbp & 0xC)
|
|
s->dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
|
|
if(top_cbp & 0xA)
|
|
s->dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
|
|
}
|
|
block_cbp |= 0xF << (i << 2);
|
|
} else if(val) {
|
|
int left_cbp = 0, top_cbp = 0, filter = 0;
|
|
if(apply_loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){
|
|
filter = 1;
|
|
if(i & 4){
|
|
left_cbp = v->cbp[s->mb_x - 1] >> (i * 4);
|
|
top_cbp = v->cbp[s->mb_x - s->mb_stride] >> (i * 4);
|
|
}else{
|
|
left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1] >> ((i+1)*4));
|
|
top_cbp = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4));
|
|
}
|
|
if(left_cbp & 0xC)
|
|
s->dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
|
|
if(top_cbp & 0xA)
|
|
s->dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
|
|
}
|
|
pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block, s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize, (i&4) && (s->flags & CODEC_FLAG_GRAY), filter, left_cbp, top_cbp);
|
|
block_cbp |= pat << (i << 2);
|
|
if(!v->ttmbf && ttmb < 8) ttmb = -1;
|
|
first_block = 0;
|
|
}
|
|
}
|
|
}
|
|
else //Skipped
|
|
{
|
|
s->mb_intra = 0;
|
|
for(i = 0; i < 6; i++) {
|
|
v->mb_type[0][s->block_index[i]] = 0;
|
|
s->dc_val[0][s->block_index[i]] = 0;
|
|
}
|
|
s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP;
|
|
s->current_picture.qscale_table[mb_pos] = 0;
|
|
vc1_pred_mv(s, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0]);
|
|
vc1_mc_1mv(v, 0);
|
|
return 0;
|
|
}
|
|
} //1MV mode
|
|
else //4MV mode
|
|
{
|
|
if (!skipped /* unskipped MB */)
|
|
{
|
|
int intra_count = 0, coded_inter = 0;
|
|
int is_intra[6], is_coded[6];
|
|
/* Get CBPCY */
|
|
cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
|
|
for (i=0; i<6; i++)
|
|
{
|
|
val = ((cbp >> (5 - i)) & 1);
|
|
s->dc_val[0][s->block_index[i]] = 0;
|
|
s->mb_intra = 0;
|
|
if(i < 4) {
|
|
dmv_x = dmv_y = 0;
|
|
s->mb_intra = 0;
|
|
mb_has_coeffs = 0;
|
|
if(val) {
|
|
GET_MVDATA(dmv_x, dmv_y);
|
|
}
|
|
vc1_pred_mv(s, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0]);
|
|
if(!s->mb_intra) vc1_mc_4mv_luma(v, i);
|
|
intra_count += s->mb_intra;
|
|
is_intra[i] = s->mb_intra;
|
|
is_coded[i] = mb_has_coeffs;
|
|
}
|
|
if(i&4){
|
|
is_intra[i] = (intra_count >= 3);
|
|
is_coded[i] = val;
|
|
}
|
|
if(i == 4) vc1_mc_4mv_chroma(v);
|
|
v->mb_type[0][s->block_index[i]] = is_intra[i];
|
|
if(!coded_inter) coded_inter = !is_intra[i] & is_coded[i];
|
|
}
|
|
// if there are no coded blocks then don't do anything more
|
|
if(!intra_count && !coded_inter) return 0;
|
|
dst_idx = 0;
|
|
GET_MQUANT();
|
|
s->current_picture.qscale_table[mb_pos] = mquant;
|
|
/* test if block is intra and has pred */
|
|
{
|
|
int intrapred = 0;
|
|
for(i=0; i<6; i++)
|
|
if(is_intra[i]) {
|
|
if(((!s->first_slice_line || (i==2 || i==3)) && v->mb_type[0][s->block_index[i] - s->block_wrap[i]])
|
|
|| ((s->mb_x || (i==1 || i==3)) && v->mb_type[0][s->block_index[i] - 1])) {
|
|
intrapred = 1;
|
|
break;
|
|
}
|
|
}
|
|
if(intrapred)s->ac_pred = get_bits1(gb);
|
|
else s->ac_pred = 0;
|
|
}
|
|
if (!v->ttmbf && coded_inter)
|
|
ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
|
|
for (i=0; i<6; i++)
|
|
{
|
|
dst_idx += i >> 2;
|
|
off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
|
|
s->mb_intra = is_intra[i];
|
|
if (is_intra[i]) {
|
|
/* check if prediction blocks A and C are available */
|
|
v->a_avail = v->c_avail = 0;
|
|
if(i == 2 || i == 3 || !s->first_slice_line)
|
|
v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
|
|
if(i == 1 || i == 3 || s->mb_x)
|
|
v->c_avail = v->mb_type[0][s->block_index[i] - 1];
|
|
|
|
vc1_decode_intra_block(v, s->block[i], i, is_coded[i], mquant, (i&4)?v->codingset2:v->codingset);
|
|
if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
|
|
s->dsp.vc1_inv_trans_8x8(s->block[i]);
|
|
if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
|
|
s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
|
|
if(v->pq >= 9 && v->overlap) {
|
|
if(v->c_avail)
|
|
s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
|
|
if(v->a_avail)
|
|
s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
|
|
}
|
|
if(v->s.loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){
|
|
int left_cbp, top_cbp;
|
|
if(i & 4){
|
|
left_cbp = v->cbp[s->mb_x - 1] >> (i * 4);
|
|
top_cbp = v->cbp[s->mb_x - s->mb_stride] >> (i * 4);
|
|
}else{
|
|
left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1] >> ((i+1)*4));
|
|
top_cbp = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4));
|
|
}
|
|
if(left_cbp & 0xC)
|
|
s->dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
|
|
if(top_cbp & 0xA)
|
|
s->dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
|
|
}
|
|
block_cbp |= 0xF << (i << 2);
|
|
} else if(is_coded[i]) {
|
|
int left_cbp = 0, top_cbp = 0, filter = 0;
|
|
if(v->s.loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){
|
|
filter = 1;
|
|
if(i & 4){
|
|
left_cbp = v->cbp[s->mb_x - 1] >> (i * 4);
|
|
top_cbp = v->cbp[s->mb_x - s->mb_stride] >> (i * 4);
|
|
}else{
|
|
left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1] >> ((i+1)*4));
|
|
top_cbp = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4));
|
|
}
|
|
if(left_cbp & 0xC)
|
|
s->dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
|
|
if(top_cbp & 0xA)
|
|
s->dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
|
|
}
|
|
pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block, s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize, (i&4) && (s->flags & CODEC_FLAG_GRAY), filter, left_cbp, top_cbp);
|
|
block_cbp |= pat << (i << 2);
|
|
if(!v->ttmbf && ttmb < 8) ttmb = -1;
|
|
first_block = 0;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
else //Skipped MB
|
|
{
|
|
s->mb_intra = 0;
|
|
s->current_picture.qscale_table[mb_pos] = 0;
|
|
for (i=0; i<6; i++) {
|
|
v->mb_type[0][s->block_index[i]] = 0;
|
|
s->dc_val[0][s->block_index[i]] = 0;
|
|
}
|
|
for (i=0; i<4; i++)
|
|
{
|
|
vc1_pred_mv(s, i, 0, 0, 0, v->range_x, v->range_y, v->mb_type[0]);
|
|
vc1_mc_4mv_luma(v, i);
|
|
}
|
|
vc1_mc_4mv_chroma(v);
|
|
s->current_picture.qscale_table[mb_pos] = 0;
|
|
return 0;
|
|
}
|
|
}
|
|
v->cbp[s->mb_x] = block_cbp;
|
|
|
|
/* Should never happen */
|
|
return -1;
|
|
}
|
|
|
|
/** Decode one B-frame MB (in Main profile)
|
|
*/
|
|
static void vc1_decode_b_mb(VC1Context *v)
|
|
{
|
|
MpegEncContext *s = &v->s;
|
|
GetBitContext *gb = &s->gb;
|
|
int i, j;
|
|
int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
|
|
int cbp = 0; /* cbp decoding stuff */
|
|
int mqdiff, mquant; /* MB quantization */
|
|
int ttmb = v->ttfrm; /* MB Transform type */
|
|
int mb_has_coeffs = 0; /* last_flag */
|
|
int index, index1; /* LUT indexes */
|
|
int val, sign; /* temp values */
|
|
int first_block = 1;
|
|
int dst_idx, off;
|
|
int skipped, direct;
|
|
int dmv_x[2], dmv_y[2];
|
|
int bmvtype = BMV_TYPE_BACKWARD;
|
|
|
|
mquant = v->pq; /* Loosy initialization */
|
|
s->mb_intra = 0;
|
|
|
|
if (v->dmb_is_raw)
|
|
direct = get_bits1(gb);
|
|
else
|
|
direct = v->direct_mb_plane[mb_pos];
|
|
if (v->skip_is_raw)
|
|
skipped = get_bits1(gb);
|
|
else
|
|
skipped = v->s.mbskip_table[mb_pos];
|
|
|
|
s->dsp.clear_blocks(s->block[0]);
|
|
dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0;
|
|
for(i = 0; i < 6; i++) {
|
|
v->mb_type[0][s->block_index[i]] = 0;
|
|
s->dc_val[0][s->block_index[i]] = 0;
|
|
}
|
|
s->current_picture.qscale_table[mb_pos] = 0;
|
|
|
|
if (!direct) {
|
|
if (!skipped) {
|
|
GET_MVDATA(dmv_x[0], dmv_y[0]);
|
|
dmv_x[1] = dmv_x[0];
|
|
dmv_y[1] = dmv_y[0];
|
|
}
|
|
if(skipped || !s->mb_intra) {
|
|
bmvtype = decode012(gb);
|
|
switch(bmvtype) {
|
|
case 0:
|
|
bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD;
|
|
break;
|
|
case 1:
|
|
bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD;
|
|
break;
|
|
case 2:
|
|
bmvtype = BMV_TYPE_INTERPOLATED;
|
|
dmv_x[0] = dmv_y[0] = 0;
|
|
}
|
|
}
|
|
}
|
|
for(i = 0; i < 6; i++)
|
|
v->mb_type[0][s->block_index[i]] = s->mb_intra;
|
|
|
|
if (skipped) {
|
|
if(direct) bmvtype = BMV_TYPE_INTERPOLATED;
|
|
vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
|
|
vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
|
|
return;
|
|
}
|
|
if (direct) {
|
|
cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
|
|
GET_MQUANT();
|
|
s->mb_intra = 0;
|
|
s->current_picture.qscale_table[mb_pos] = mquant;
|
|
if(!v->ttmbf)
|
|
ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
|
|
dmv_x[0] = dmv_y[0] = dmv_x[1] = dmv_y[1] = 0;
|
|
vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
|
|
vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
|
|
} else {
|
|
if(!mb_has_coeffs && !s->mb_intra) {
|
|
/* no coded blocks - effectively skipped */
|
|
vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
|
|
vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
|
|
return;
|
|
}
|
|
if(s->mb_intra && !mb_has_coeffs) {
|
|
GET_MQUANT();
|
|
s->current_picture.qscale_table[mb_pos] = mquant;
|
|
s->ac_pred = get_bits1(gb);
|
|
cbp = 0;
|
|
vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
|
|
} else {
|
|
if(bmvtype == BMV_TYPE_INTERPOLATED) {
|
|
GET_MVDATA(dmv_x[0], dmv_y[0]);
|
|
if(!mb_has_coeffs) {
|
|
/* interpolated skipped block */
|
|
vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
|
|
vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
|
|
return;
|
|
}
|
|
}
|
|
vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
|
|
if(!s->mb_intra) {
|
|
vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
|
|
}
|
|
if(s->mb_intra)
|
|
s->ac_pred = get_bits1(gb);
|
|
cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
|
|
GET_MQUANT();
|
|
s->current_picture.qscale_table[mb_pos] = mquant;
|
|
if(!v->ttmbf && !s->mb_intra && mb_has_coeffs)
|
|
ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
|
|
}
|
|
}
|
|
dst_idx = 0;
|
|
for (i=0; i<6; i++)
|
|
{
|
|
s->dc_val[0][s->block_index[i]] = 0;
|
|
dst_idx += i >> 2;
|
|
val = ((cbp >> (5 - i)) & 1);
|
|
off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
|
|
v->mb_type[0][s->block_index[i]] = s->mb_intra;
|
|
if(s->mb_intra) {
|
|
/* check if prediction blocks A and C are available */
|
|
v->a_avail = v->c_avail = 0;
|
|
if(i == 2 || i == 3 || !s->first_slice_line)
|
|
v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
|
|
if(i == 1 || i == 3 || s->mb_x)
|
|
v->c_avail = v->mb_type[0][s->block_index[i] - 1];
|
|
|
|
vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset);
|
|
if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
|
|
s->dsp.vc1_inv_trans_8x8(s->block[i]);
|
|
if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
|
|
s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
|
|
} else if(val) {
|
|
vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block, s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize, (i&4) && (s->flags & CODEC_FLAG_GRAY), 0, 0, 0);
|
|
if(!v->ttmbf && ttmb < 8) ttmb = -1;
|
|
first_block = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
/** Decode blocks of I-frame
|
|
*/
|
|
static void vc1_decode_i_blocks(VC1Context *v)
|
|
{
|
|
int k, j;
|
|
MpegEncContext *s = &v->s;
|
|
int cbp, val;
|
|
uint8_t *coded_val;
|
|
int mb_pos;
|
|
|
|
/* select codingmode used for VLC tables selection */
|
|
switch(v->y_ac_table_index){
|
|
case 0:
|
|
v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
|
|
break;
|
|
case 1:
|
|
v->codingset = CS_HIGH_MOT_INTRA;
|
|
break;
|
|
case 2:
|
|
v->codingset = CS_MID_RATE_INTRA;
|
|
break;
|
|
}
|
|
|
|
switch(v->c_ac_table_index){
|
|
case 0:
|
|
v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
|
|
break;
|
|
case 1:
|
|
v->codingset2 = CS_HIGH_MOT_INTER;
|
|
break;
|
|
case 2:
|
|
v->codingset2 = CS_MID_RATE_INTER;
|
|
break;
|
|
}
|
|
|
|
/* Set DC scale - y and c use the same */
|
|
s->y_dc_scale = s->y_dc_scale_table[v->pq];
|
|
s->c_dc_scale = s->c_dc_scale_table[v->pq];
|
|
|
|
//do frame decode
|
|
s->mb_x = s->mb_y = 0;
|
|
s->mb_intra = 1;
|
|
s->first_slice_line = 1;
|
|
for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
|
|
for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
|
|
ff_init_block_index(s);
|
|
ff_update_block_index(s);
|
|
s->dsp.clear_blocks(s->block[0]);
|
|
mb_pos = s->mb_x + s->mb_y * s->mb_width;
|
|
s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
|
|
s->current_picture.qscale_table[mb_pos] = v->pq;
|
|
s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
|
|
s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
|
|
|
|
// do actual MB decoding and displaying
|
|
cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
|
|
v->s.ac_pred = get_bits1(&v->s.gb);
|
|
|
|
for(k = 0; k < 6; k++) {
|
|
val = ((cbp >> (5 - k)) & 1);
|
|
|
|
if (k < 4) {
|
|
int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
|
|
val = val ^ pred;
|
|
*coded_val = val;
|
|
}
|
|
cbp |= val << (5 - k);
|
|
|
|
vc1_decode_i_block(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2);
|
|
|
|
s->dsp.vc1_inv_trans_8x8(s->block[k]);
|
|
if(v->pq >= 9 && v->overlap) {
|
|
for(j = 0; j < 64; j++) s->block[k][j] += 128;
|
|
}
|
|
}
|
|
|
|
vc1_put_block(v, s->block);
|
|
if(v->pq >= 9 && v->overlap) {
|
|
if(s->mb_x) {
|
|
s->dsp.vc1_h_overlap(s->dest[0], s->linesize);
|
|
s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
|
|
if(!(s->flags & CODEC_FLAG_GRAY)) {
|
|
s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
|
|
s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
|
|
}
|
|
}
|
|
s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
|
|
s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
|
|
if(!s->first_slice_line) {
|
|
s->dsp.vc1_v_overlap(s->dest[0], s->linesize);
|
|
s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
|
|
if(!(s->flags & CODEC_FLAG_GRAY)) {
|
|
s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
|
|
s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
|
|
}
|
|
}
|
|
s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
|
|
s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
|
|
}
|
|
if(v->s.loop_filter) vc1_loop_filter_iblk(s, v->pq);
|
|
|
|
if(get_bits_count(&s->gb) > v->bits) {
|
|
ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
|
|
av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits);
|
|
return;
|
|
}
|
|
}
|
|
ff_draw_horiz_band(s, s->mb_y * 16, 16);
|
|
s->first_slice_line = 0;
|
|
}
|
|
ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
|
|
}
|
|
|
|
/** Decode blocks of I-frame for advanced profile
|
|
*/
|
|
static void vc1_decode_i_blocks_adv(VC1Context *v)
|
|
{
|
|
int k, j;
|
|
MpegEncContext *s = &v->s;
|
|
int cbp, val;
|
|
uint8_t *coded_val;
|
|
int mb_pos;
|
|
int mquant = v->pq;
|
|
int mqdiff;
|
|
int overlap;
|
|
GetBitContext *gb = &s->gb;
|
|
|
|
/* select codingmode used for VLC tables selection */
|
|
switch(v->y_ac_table_index){
|
|
case 0:
|
|
v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
|
|
break;
|
|
case 1:
|
|
v->codingset = CS_HIGH_MOT_INTRA;
|
|
break;
|
|
case 2:
|
|
v->codingset = CS_MID_RATE_INTRA;
|
|
break;
|
|
}
|
|
|
|
switch(v->c_ac_table_index){
|
|
case 0:
|
|
v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
|
|
break;
|
|
case 1:
|
|
v->codingset2 = CS_HIGH_MOT_INTER;
|
|
break;
|
|
case 2:
|
|
v->codingset2 = CS_MID_RATE_INTER;
|
|
break;
|
|
}
|
|
|
|
//do frame decode
|
|
s->mb_x = s->mb_y = 0;
|
|
s->mb_intra = 1;
|
|
s->first_slice_line = 1;
|
|
for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
|
|
for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
|
|
ff_init_block_index(s);
|
|
ff_update_block_index(s);
|
|
s->dsp.clear_blocks(s->block[0]);
|
|
mb_pos = s->mb_x + s->mb_y * s->mb_stride;
|
|
s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
|
|
s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
|
|
s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
|
|
|
|
// do actual MB decoding and displaying
|
|
cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
|
|
if(v->acpred_is_raw)
|
|
v->s.ac_pred = get_bits1(&v->s.gb);
|
|
else
|
|
v->s.ac_pred = v->acpred_plane[mb_pos];
|
|
|
|
if(v->condover == CONDOVER_SELECT) {
|
|
if(v->overflg_is_raw)
|
|
overlap = get_bits1(&v->s.gb);
|
|
else
|
|
overlap = v->over_flags_plane[mb_pos];
|
|
} else
|
|
overlap = (v->condover == CONDOVER_ALL);
|
|
|
|
GET_MQUANT();
|
|
|
|
s->current_picture.qscale_table[mb_pos] = mquant;
|
|
/* Set DC scale - y and c use the same */
|
|
s->y_dc_scale = s->y_dc_scale_table[mquant];
|
|
s->c_dc_scale = s->c_dc_scale_table[mquant];
|
|
|
|
for(k = 0; k < 6; k++) {
|
|
val = ((cbp >> (5 - k)) & 1);
|
|
|
|
if (k < 4) {
|
|
int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
|
|
val = val ^ pred;
|
|
*coded_val = val;
|
|
}
|
|
cbp |= val << (5 - k);
|
|
|
|
v->a_avail = !s->first_slice_line || (k==2 || k==3);
|
|
v->c_avail = !!s->mb_x || (k==1 || k==3);
|
|
|
|
vc1_decode_i_block_adv(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2, mquant);
|
|
|
|
s->dsp.vc1_inv_trans_8x8(s->block[k]);
|
|
for(j = 0; j < 64; j++) s->block[k][j] += 128;
|
|
}
|
|
|
|
vc1_put_block(v, s->block);
|
|
if(overlap) {
|
|
if(s->mb_x) {
|
|
s->dsp.vc1_h_overlap(s->dest[0], s->linesize);
|
|
s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
|
|
if(!(s->flags & CODEC_FLAG_GRAY)) {
|
|
s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
|
|
s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
|
|
}
|
|
}
|
|
s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
|
|
s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
|
|
if(!s->first_slice_line) {
|
|
s->dsp.vc1_v_overlap(s->dest[0], s->linesize);
|
|
s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
|
|
if(!(s->flags & CODEC_FLAG_GRAY)) {
|
|
s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
|
|
s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
|
|
}
|
|
}
|
|
s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
|
|
s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
|
|
}
|
|
if(v->s.loop_filter) vc1_loop_filter_iblk(s, v->pq);
|
|
|
|
if(get_bits_count(&s->gb) > v->bits) {
|
|
ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
|
|
av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits);
|
|
return;
|
|
}
|
|
}
|
|
ff_draw_horiz_band(s, s->mb_y * 16, 16);
|
|
s->first_slice_line = 0;
|
|
}
|
|
ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
|
|
}
|
|
|
|
static void vc1_decode_p_blocks(VC1Context *v)
|
|
{
|
|
MpegEncContext *s = &v->s;
|
|
|
|
/* select codingmode used for VLC tables selection */
|
|
switch(v->c_ac_table_index){
|
|
case 0:
|
|
v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
|
|
break;
|
|
case 1:
|
|
v->codingset = CS_HIGH_MOT_INTRA;
|
|
break;
|
|
case 2:
|
|
v->codingset = CS_MID_RATE_INTRA;
|
|
break;
|
|
}
|
|
|
|
switch(v->c_ac_table_index){
|
|
case 0:
|
|
v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
|
|
break;
|
|
case 1:
|
|
v->codingset2 = CS_HIGH_MOT_INTER;
|
|
break;
|
|
case 2:
|
|
v->codingset2 = CS_MID_RATE_INTER;
|
|
break;
|
|
}
|
|
|
|
s->first_slice_line = 1;
|
|
memset(v->cbp_base, 0, sizeof(v->cbp_base[0])*2*s->mb_stride);
|
|
for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
|
|
for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
|
|
ff_init_block_index(s);
|
|
ff_update_block_index(s);
|
|
s->dsp.clear_blocks(s->block[0]);
|
|
|
|
vc1_decode_p_mb(v);
|
|
if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
|
|
ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
|
|
av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i at %ix%i\n", get_bits_count(&s->gb), v->bits,s->mb_x,s->mb_y);
|
|
return;
|
|
}
|
|
}
|
|
memmove(v->cbp_base, v->cbp, sizeof(v->cbp_base[0])*s->mb_stride);
|
|
ff_draw_horiz_band(s, s->mb_y * 16, 16);
|
|
s->first_slice_line = 0;
|
|
}
|
|
ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
|
|
}
|
|
|
|
static void vc1_decode_b_blocks(VC1Context *v)
|
|
{
|
|
MpegEncContext *s = &v->s;
|
|
|
|
/* select codingmode used for VLC tables selection */
|
|
switch(v->c_ac_table_index){
|
|
case 0:
|
|
v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
|
|
break;
|
|
case 1:
|
|
v->codingset = CS_HIGH_MOT_INTRA;
|
|
break;
|
|
case 2:
|
|
v->codingset = CS_MID_RATE_INTRA;
|
|
break;
|
|
}
|
|
|
|
switch(v->c_ac_table_index){
|
|
case 0:
|
|
v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
|
|
break;
|
|
case 1:
|
|
v->codingset2 = CS_HIGH_MOT_INTER;
|
|
break;
|
|
case 2:
|
|
v->codingset2 = CS_MID_RATE_INTER;
|
|
break;
|
|
}
|
|
|
|
s->first_slice_line = 1;
|
|
for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
|
|
for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
|
|
ff_init_block_index(s);
|
|
ff_update_block_index(s);
|
|
s->dsp.clear_blocks(s->block[0]);
|
|
|
|
vc1_decode_b_mb(v);
|
|
if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
|
|
ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
|
|
av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i at %ix%i\n", get_bits_count(&s->gb), v->bits,s->mb_x,s->mb_y);
|
|
return;
|
|
}
|
|
if(v->s.loop_filter) vc1_loop_filter_iblk(s, v->pq);
|
|
}
|
|
ff_draw_horiz_band(s, s->mb_y * 16, 16);
|
|
s->first_slice_line = 0;
|
|
}
|
|
ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
|
|
}
|
|
|
|
static void vc1_decode_skip_blocks(VC1Context *v)
|
|
{
|
|
MpegEncContext *s = &v->s;
|
|
|
|
ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
|
|
s->first_slice_line = 1;
|
|
for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
|
|
s->mb_x = 0;
|
|
ff_init_block_index(s);
|
|
ff_update_block_index(s);
|
|
memcpy(s->dest[0], s->last_picture.data[0] + s->mb_y * 16 * s->linesize, s->linesize * 16);
|
|
memcpy(s->dest[1], s->last_picture.data[1] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
|
|
memcpy(s->dest[2], s->last_picture.data[2] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
|
|
ff_draw_horiz_band(s, s->mb_y * 16, 16);
|
|
s->first_slice_line = 0;
|
|
}
|
|
s->pict_type = FF_P_TYPE;
|
|
}
|
|
|
|
static void vc1_decode_blocks(VC1Context *v)
|
|
{
|
|
|
|
v->s.esc3_level_length = 0;
|
|
if(v->x8_type){
|
|
ff_intrax8_decode_picture(&v->x8, 2*v->pq+v->halfpq, v->pq*(!v->pquantizer) );
|
|
}else{
|
|
|
|
switch(v->s.pict_type) {
|
|
case FF_I_TYPE:
|
|
if(v->profile == PROFILE_ADVANCED)
|
|
vc1_decode_i_blocks_adv(v);
|
|
else
|
|
vc1_decode_i_blocks(v);
|
|
break;
|
|
case FF_P_TYPE:
|
|
if(v->p_frame_skipped)
|
|
vc1_decode_skip_blocks(v);
|
|
else
|
|
vc1_decode_p_blocks(v);
|
|
break;
|
|
case FF_B_TYPE:
|
|
if(v->bi_type){
|
|
if(v->profile == PROFILE_ADVANCED)
|
|
vc1_decode_i_blocks_adv(v);
|
|
else
|
|
vc1_decode_i_blocks(v);
|
|
}else
|
|
vc1_decode_b_blocks(v);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/** Find VC-1 marker in buffer
|
|
* @return position where next marker starts or end of buffer if no marker found
|
|
*/
|
|
static av_always_inline const uint8_t* find_next_marker(const uint8_t *src, const uint8_t *end)
|
|
{
|
|
uint32_t mrk = 0xFFFFFFFF;
|
|
|
|
if(end-src < 4) return end;
|
|
while(src < end){
|
|
mrk = (mrk << 8) | *src++;
|
|
if(IS_MARKER(mrk))
|
|
return src-4;
|
|
}
|
|
return end;
|
|
}
|
|
|
|
static av_always_inline int vc1_unescape_buffer(const uint8_t *src, int size, uint8_t *dst)
|
|
{
|
|
int dsize = 0, i;
|
|
|
|
if(size < 4){
|
|
for(dsize = 0; dsize < size; dsize++) *dst++ = *src++;
|
|
return size;
|
|
}
|
|
for(i = 0; i < size; i++, src++) {
|
|
if(src[0] == 3 && i >= 2 && !src[-1] && !src[-2] && i < size-1 && src[1] < 4) {
|
|
dst[dsize++] = src[1];
|
|
src++;
|
|
i++;
|
|
} else
|
|
dst[dsize++] = *src;
|
|
}
|
|
return dsize;
|
|
}
|
|
|
|
/** Initialize a VC1/WMV3 decoder
|
|
* @todo TODO: Handle VC-1 IDUs (Transport level?)
|
|
* @todo TODO: Decypher remaining bits in extra_data
|
|
*/
|
|
static av_cold int vc1_decode_init(AVCodecContext *avctx)
|
|
{
|
|
VC1Context *v = avctx->priv_data;
|
|
MpegEncContext *s = &v->s;
|
|
GetBitContext gb;
|
|
|
|
if (!avctx->extradata_size || !avctx->extradata) return -1;
|
|
if (!(avctx->flags & CODEC_FLAG_GRAY))
|
|
avctx->pix_fmt = avctx->get_format(avctx, avctx->codec->pix_fmts);
|
|
else
|
|
avctx->pix_fmt = PIX_FMT_GRAY8;
|
|
avctx->hwaccel = ff_find_hwaccel(avctx->codec->id, avctx->pix_fmt);
|
|
v->s.avctx = avctx;
|
|
avctx->flags |= CODEC_FLAG_EMU_EDGE;
|
|
v->s.flags |= CODEC_FLAG_EMU_EDGE;
|
|
|
|
if(avctx->idct_algo==FF_IDCT_AUTO){
|
|
avctx->idct_algo=FF_IDCT_WMV2;
|
|
}
|
|
|
|
if(ff_h263_decode_init(avctx) < 0)
|
|
return -1;
|
|
if (vc1_init_common(v) < 0) return -1;
|
|
|
|
avctx->coded_width = avctx->width;
|
|
avctx->coded_height = avctx->height;
|
|
if (avctx->codec_id == CODEC_ID_WMV3)
|
|
{
|
|
int count = 0;
|
|
|
|
// looks like WMV3 has a sequence header stored in the extradata
|
|
// advanced sequence header may be before the first frame
|
|
// the last byte of the extradata is a version number, 1 for the
|
|
// samples we can decode
|
|
|
|
init_get_bits(&gb, avctx->extradata, avctx->extradata_size*8);
|
|
|
|
if (decode_sequence_header(avctx, &gb) < 0)
|
|
return -1;
|
|
|
|
count = avctx->extradata_size*8 - get_bits_count(&gb);
|
|
if (count>0)
|
|
{
|
|
av_log(avctx, AV_LOG_INFO, "Extra data: %i bits left, value: %X\n",
|
|
count, get_bits(&gb, count));
|
|
}
|
|
else if (count < 0)
|
|
{
|
|
av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count);
|
|
}
|
|
} else { // VC1/WVC1
|
|
const uint8_t *start = avctx->extradata;
|
|
uint8_t *end = avctx->extradata + avctx->extradata_size;
|
|
const uint8_t *next;
|
|
int size, buf2_size;
|
|
uint8_t *buf2 = NULL;
|
|
int seq_initialized = 0, ep_initialized = 0;
|
|
|
|
if(avctx->extradata_size < 16) {
|
|
av_log(avctx, AV_LOG_ERROR, "Extradata size too small: %i\n", avctx->extradata_size);
|
|
return -1;
|
|
}
|
|
|
|
buf2 = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
|
|
if(start[0]) start++; // in WVC1 extradata first byte is its size
|
|
next = start;
|
|
for(; next < end; start = next){
|
|
next = find_next_marker(start + 4, end);
|
|
size = next - start - 4;
|
|
if(size <= 0) continue;
|
|
buf2_size = vc1_unescape_buffer(start + 4, size, buf2);
|
|
init_get_bits(&gb, buf2, buf2_size * 8);
|
|
switch(AV_RB32(start)){
|
|
case VC1_CODE_SEQHDR:
|
|
if(decode_sequence_header(avctx, &gb) < 0){
|
|
av_free(buf2);
|
|
return -1;
|
|
}
|
|
seq_initialized = 1;
|
|
break;
|
|
case VC1_CODE_ENTRYPOINT:
|
|
if(decode_entry_point(avctx, &gb) < 0){
|
|
av_free(buf2);
|
|
return -1;
|
|
}
|
|
ep_initialized = 1;
|
|
break;
|
|
}
|
|
}
|
|
av_free(buf2);
|
|
if(!seq_initialized || !ep_initialized){
|
|
av_log(avctx, AV_LOG_ERROR, "Incomplete extradata\n");
|
|
return -1;
|
|
}
|
|
}
|
|
avctx->has_b_frames= !!(avctx->max_b_frames);
|
|
s->low_delay = !avctx->has_b_frames;
|
|
|
|
s->mb_width = (avctx->coded_width+15)>>4;
|
|
s->mb_height = (avctx->coded_height+15)>>4;
|
|
|
|
/* Allocate mb bitplanes */
|
|
v->mv_type_mb_plane = av_malloc(s->mb_stride * s->mb_height);
|
|
v->direct_mb_plane = av_malloc(s->mb_stride * s->mb_height);
|
|
v->acpred_plane = av_malloc(s->mb_stride * s->mb_height);
|
|
v->over_flags_plane = av_malloc(s->mb_stride * s->mb_height);
|
|
|
|
v->cbp_base = av_malloc(sizeof(v->cbp_base[0]) * 2 * s->mb_stride);
|
|
v->cbp = v->cbp_base + s->mb_stride;
|
|
|
|
/* allocate block type info in that way so it could be used with s->block_index[] */
|
|
v->mb_type_base = av_malloc(s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride * (s->mb_height + 1) * 2);
|
|
v->mb_type[0] = v->mb_type_base + s->b8_stride + 1;
|
|
v->mb_type[1] = v->mb_type_base + s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride + 1;
|
|
v->mb_type[2] = v->mb_type[1] + s->mb_stride * (s->mb_height + 1);
|
|
|
|
/* Init coded blocks info */
|
|
if (v->profile == PROFILE_ADVANCED)
|
|
{
|
|
// if (alloc_bitplane(&v->over_flags_plane, s->mb_width, s->mb_height) < 0)
|
|
// return -1;
|
|
// if (alloc_bitplane(&v->ac_pred_plane, s->mb_width, s->mb_height) < 0)
|
|
// return -1;
|
|
}
|
|
|
|
ff_intrax8_common_init(&v->x8,s);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/** Decode a VC1/WMV3 frame
|
|
* @todo TODO: Handle VC-1 IDUs (Transport level?)
|
|
*/
|
|
static int vc1_decode_frame(AVCodecContext *avctx,
|
|
void *data, int *data_size,
|
|
AVPacket *avpkt)
|
|
{
|
|
const uint8_t *buf = avpkt->data;
|
|
int buf_size = avpkt->size;
|
|
VC1Context *v = avctx->priv_data;
|
|
MpegEncContext *s = &v->s;
|
|
AVFrame *pict = data;
|
|
uint8_t *buf2 = NULL;
|
|
const uint8_t *buf_start = buf;
|
|
|
|
/* no supplementary picture */
|
|
if (buf_size == 0) {
|
|
/* special case for last picture */
|
|
if (s->low_delay==0 && s->next_picture_ptr) {
|
|
*pict= *(AVFrame*)s->next_picture_ptr;
|
|
s->next_picture_ptr= NULL;
|
|
|
|
*data_size = sizeof(AVFrame);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* We need to set current_picture_ptr before reading the header,
|
|
* otherwise we cannot store anything in there. */
|
|
if(s->current_picture_ptr==NULL || s->current_picture_ptr->data[0]){
|
|
int i= ff_find_unused_picture(s, 0);
|
|
s->current_picture_ptr= &s->picture[i];
|
|
}
|
|
|
|
if (s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU){
|
|
if (v->profile < PROFILE_ADVANCED)
|
|
avctx->pix_fmt = PIX_FMT_VDPAU_WMV3;
|
|
else
|
|
avctx->pix_fmt = PIX_FMT_VDPAU_VC1;
|
|
}
|
|
|
|
//for advanced profile we may need to parse and unescape data
|
|
if (avctx->codec_id == CODEC_ID_VC1) {
|
|
int buf_size2 = 0;
|
|
buf2 = av_mallocz(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
|
|
|
|
if(IS_MARKER(AV_RB32(buf))){ /* frame starts with marker and needs to be parsed */
|
|
const uint8_t *start, *end, *next;
|
|
int size;
|
|
|
|
next = buf;
|
|
for(start = buf, end = buf + buf_size; next < end; start = next){
|
|
next = find_next_marker(start + 4, end);
|
|
size = next - start - 4;
|
|
if(size <= 0) continue;
|
|
switch(AV_RB32(start)){
|
|
case VC1_CODE_FRAME:
|
|
if (avctx->hwaccel ||
|
|
s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
|
|
buf_start = start;
|
|
buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
|
|
break;
|
|
case VC1_CODE_ENTRYPOINT: /* it should be before frame data */
|
|
buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
|
|
init_get_bits(&s->gb, buf2, buf_size2*8);
|
|
decode_entry_point(avctx, &s->gb);
|
|
break;
|
|
case VC1_CODE_SLICE:
|
|
av_log(avctx, AV_LOG_ERROR, "Sliced decoding is not implemented (yet)\n");
|
|
av_free(buf2);
|
|
return -1;
|
|
}
|
|
}
|
|
}else if(v->interlace && ((buf[0] & 0xC0) == 0xC0)){ /* WVC1 interlaced stores both fields divided by marker */
|
|
const uint8_t *divider;
|
|
|
|
divider = find_next_marker(buf, buf + buf_size);
|
|
if((divider == (buf + buf_size)) || AV_RB32(divider) != VC1_CODE_FIELD){
|
|
av_log(avctx, AV_LOG_ERROR, "Error in WVC1 interlaced frame\n");
|
|
av_free(buf2);
|
|
return -1;
|
|
}
|
|
|
|
buf_size2 = vc1_unescape_buffer(buf, divider - buf, buf2);
|
|
// TODO
|
|
av_free(buf2);return -1;
|
|
}else{
|
|
buf_size2 = vc1_unescape_buffer(buf, buf_size, buf2);
|
|
}
|
|
init_get_bits(&s->gb, buf2, buf_size2*8);
|
|
} else
|
|
init_get_bits(&s->gb, buf, buf_size*8);
|
|
// do parse frame header
|
|
if(v->profile < PROFILE_ADVANCED) {
|
|
if(vc1_parse_frame_header(v, &s->gb) == -1) {
|
|
av_free(buf2);
|
|
return -1;
|
|
}
|
|
} else {
|
|
if(vc1_parse_frame_header_adv(v, &s->gb) == -1) {
|
|
av_free(buf2);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if(s->pict_type != FF_I_TYPE && !v->res_rtm_flag){
|
|
av_free(buf2);
|
|
return -1;
|
|
}
|
|
|
|
// for hurry_up==5
|
|
s->current_picture.pict_type= s->pict_type;
|
|
s->current_picture.key_frame= s->pict_type == FF_I_TYPE;
|
|
|
|
/* skip B-frames if we don't have reference frames */
|
|
if(s->last_picture_ptr==NULL && (s->pict_type==FF_B_TYPE || s->dropable)){
|
|
av_free(buf2);
|
|
return -1;//buf_size;
|
|
}
|
|
/* skip b frames if we are in a hurry */
|
|
if(avctx->hurry_up && s->pict_type==FF_B_TYPE) return -1;//buf_size;
|
|
if( (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type==FF_B_TYPE)
|
|
|| (avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type!=FF_I_TYPE)
|
|
|| avctx->skip_frame >= AVDISCARD_ALL) {
|
|
av_free(buf2);
|
|
return buf_size;
|
|
}
|
|
/* skip everything if we are in a hurry>=5 */
|
|
if(avctx->hurry_up>=5) {
|
|
av_free(buf2);
|
|
return -1;//buf_size;
|
|
}
|
|
|
|
if(s->next_p_frame_damaged){
|
|
if(s->pict_type==FF_B_TYPE)
|
|
return buf_size;
|
|
else
|
|
s->next_p_frame_damaged=0;
|
|
}
|
|
|
|
if(MPV_frame_start(s, avctx) < 0) {
|
|
av_free(buf2);
|
|
return -1;
|
|
}
|
|
|
|
s->me.qpel_put= s->dsp.put_qpel_pixels_tab;
|
|
s->me.qpel_avg= s->dsp.avg_qpel_pixels_tab;
|
|
|
|
if ((CONFIG_VC1_VDPAU_DECODER || CONFIG_WMV3_VDPAU_DECODER)
|
|
&&s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
|
|
ff_vdpau_vc1_decode_picture(s, buf_start, (buf + buf_size) - buf_start);
|
|
else if (avctx->hwaccel) {
|
|
if (avctx->hwaccel->start_frame(avctx, buf, buf_size) < 0)
|
|
return -1;
|
|
if (avctx->hwaccel->decode_slice(avctx, buf_start, (buf + buf_size) - buf_start) < 0)
|
|
return -1;
|
|
if (avctx->hwaccel->end_frame(avctx) < 0)
|
|
return -1;
|
|
} else {
|
|
ff_er_frame_start(s);
|
|
|
|
v->bits = buf_size * 8;
|
|
vc1_decode_blocks(v);
|
|
//av_log(s->avctx, AV_LOG_INFO, "Consumed %i/%i bits\n", get_bits_count(&s->gb), buf_size*8);
|
|
// if(get_bits_count(&s->gb) > buf_size * 8)
|
|
// return -1;
|
|
ff_er_frame_end(s);
|
|
}
|
|
|
|
MPV_frame_end(s);
|
|
|
|
assert(s->current_picture.pict_type == s->current_picture_ptr->pict_type);
|
|
assert(s->current_picture.pict_type == s->pict_type);
|
|
if (s->pict_type == FF_B_TYPE || s->low_delay) {
|
|
*pict= *(AVFrame*)s->current_picture_ptr;
|
|
} else if (s->last_picture_ptr != NULL) {
|
|
*pict= *(AVFrame*)s->last_picture_ptr;
|
|
}
|
|
|
|
if(s->last_picture_ptr || s->low_delay){
|
|
*data_size = sizeof(AVFrame);
|
|
ff_print_debug_info(s, pict);
|
|
}
|
|
|
|
/* Return the Picture timestamp as the frame number */
|
|
/* we subtract 1 because it is added on utils.c */
|
|
avctx->frame_number = s->picture_number - 1;
|
|
|
|
av_free(buf2);
|
|
return buf_size;
|
|
}
|
|
|
|
|
|
/** Close a VC1/WMV3 decoder
|
|
* @warning Initial try at using MpegEncContext stuff
|
|
*/
|
|
static av_cold int vc1_decode_end(AVCodecContext *avctx)
|
|
{
|
|
VC1Context *v = avctx->priv_data;
|
|
|
|
av_freep(&v->hrd_rate);
|
|
av_freep(&v->hrd_buffer);
|
|
MPV_common_end(&v->s);
|
|
av_freep(&v->mv_type_mb_plane);
|
|
av_freep(&v->direct_mb_plane);
|
|
av_freep(&v->acpred_plane);
|
|
av_freep(&v->over_flags_plane);
|
|
av_freep(&v->mb_type_base);
|
|
av_freep(&v->cbp_base);
|
|
ff_intrax8_common_end(&v->x8);
|
|
return 0;
|
|
}
|
|
|
|
|
|
AVCodec vc1_decoder = {
|
|
"vc1",
|
|
CODEC_TYPE_VIDEO,
|
|
CODEC_ID_VC1,
|
|
sizeof(VC1Context),
|
|
vc1_decode_init,
|
|
NULL,
|
|
vc1_decode_end,
|
|
vc1_decode_frame,
|
|
CODEC_CAP_DELAY,
|
|
NULL,
|
|
.long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1"),
|
|
.pix_fmts = ff_hwaccel_pixfmt_list_420
|
|
};
|
|
|
|
AVCodec wmv3_decoder = {
|
|
"wmv3",
|
|
CODEC_TYPE_VIDEO,
|
|
CODEC_ID_WMV3,
|
|
sizeof(VC1Context),
|
|
vc1_decode_init,
|
|
NULL,
|
|
vc1_decode_end,
|
|
vc1_decode_frame,
|
|
CODEC_CAP_DELAY,
|
|
NULL,
|
|
.long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9"),
|
|
.pix_fmts = ff_hwaccel_pixfmt_list_420
|
|
};
|
|
|
|
#if CONFIG_WMV3_VDPAU_DECODER
|
|
AVCodec wmv3_vdpau_decoder = {
|
|
"wmv3_vdpau",
|
|
CODEC_TYPE_VIDEO,
|
|
CODEC_ID_WMV3,
|
|
sizeof(VC1Context),
|
|
vc1_decode_init,
|
|
NULL,
|
|
vc1_decode_end,
|
|
vc1_decode_frame,
|
|
CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
|
|
NULL,
|
|
.long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9 VDPAU"),
|
|
.pix_fmts = (enum PixelFormat[]){PIX_FMT_VDPAU_WMV3, PIX_FMT_NONE}
|
|
};
|
|
#endif
|
|
|
|
#if CONFIG_VC1_VDPAU_DECODER
|
|
AVCodec vc1_vdpau_decoder = {
|
|
"vc1_vdpau",
|
|
CODEC_TYPE_VIDEO,
|
|
CODEC_ID_VC1,
|
|
sizeof(VC1Context),
|
|
vc1_decode_init,
|
|
NULL,
|
|
vc1_decode_end,
|
|
vc1_decode_frame,
|
|
CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
|
|
NULL,
|
|
.long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1 VDPAU"),
|
|
.pix_fmts = (enum PixelFormat[]){PIX_FMT_VDPAU_VC1, PIX_FMT_NONE}
|
|
};
|
|
#endif
|