2677 lines
82 KiB
C
2677 lines
82 KiB
C
/*
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* VC-9 and WMV3 decoder
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* Copyright (c) 2005 Anonymous
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* Copyright (c) 2005 Alex Beregszaszi
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* Copyright (c) 2005 Michael Niedermayer
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*
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* This library 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 of the License, or (at your option) any later version.
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*
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* This library 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 this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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/**
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* @file vc9.c
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* VC-9 and WMV3 decoder
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*
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* TODO: most AP stuff, optimize, most of MB layer, transform, filtering and motion compensation, etc
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* TODO: use MPV_ !!
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*/
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#include "common.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 "vc9data.h"
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#undef NDEBUG
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#include <assert.h>
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extern const uint32_t ff_table0_dc_lum[120][2], ff_table1_dc_lum[120][2];
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extern const uint32_t ff_table0_dc_chroma[120][2], ff_table1_dc_chroma[120][2];
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extern VLC ff_msmp4_dc_luma_vlc[2], ff_msmp4_dc_chroma_vlc[2];
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#define MB_INTRA_VLC_BITS 9
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extern VLC ff_msmp4_mb_i_vlc;
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#define DC_VLC_BITS 9
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static const uint16_t table_mb_intra[64][2];
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/* Some inhibiting stuff */
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#define HAS_ADVANCED_PROFILE 0
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#define TRACE 1
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#if TRACE
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# define INIT_VLC(vlc, nb_bits, nb_codes, bits, bits_wrap, bits_size, \
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codes, codes_wrap, codes_size, use_static) \
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if (init_vlc(vlc, nb_bits, nb_codes, bits, bits_wrap, bits_size, \
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codes, codes_wrap, codes_size, use_static) < 0) \
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{ \
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av_log(v->s.avctx, AV_LOG_ERROR, "Error for " # vlc " (%i)\n", i); \
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return -1; \
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}
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#else
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# define INIT_VLC(vlc, nb_bits, nb_codes, bits, bits_wrap, bits_size, \
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codes, codes_wrap, codes_size, use_static) \
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init_vlc(vlc, nb_bits, nb_codes, bits, bits_wrap, bits_size, \
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codes, codes_wrap, codes_size, use_static)
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#endif
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/** Available Profiles */
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//@{
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#define PROFILE_SIMPLE 0
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#define PROFILE_MAIN 1
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#define PROFILE_COMPLEX 2 ///< TODO: WMV9 specific
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#define PROFILE_ADVANCED 3
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//@}
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/** Sequence quantizer mode */
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//@{
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#define QUANT_FRAME_IMPLICIT 0 ///< Implicitly specified at frame level
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#define QUANT_FRAME_EXPLICIT 1 ///< Explicitly specified at frame level
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#define QUANT_NON_UNIFORM 2 ///< Non-uniform quant used for all frames
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#define QUANT_UNIFORM 3 ///< Uniform quant used for all frames
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//@}
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/** Where quant can be changed */
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//@{
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#define DQPROFILE_FOUR_EDGES 0
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#define DQPROFILE_DOUBLE_EDGES 1
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#define DQPROFILE_SINGLE_EDGE 2
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#define DQPROFILE_ALL_MBS 3
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//@}
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/** @name Where quant can be changed
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*/
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//@{
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#define DQPROFILE_FOUR_EDGES 0
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#define DQSINGLE_BEDGE_LEFT 0
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#define DQSINGLE_BEDGE_TOP 1
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#define DQSINGLE_BEDGE_RIGHT 2
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#define DQSINGLE_BEDGE_BOTTOM 3
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//@}
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/** Which pair of edges is quantized with ALTPQUANT */
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//@{
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#define DQDOUBLE_BEDGE_TOPLEFT 0
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#define DQDOUBLE_BEDGE_TOPRIGHT 1
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#define DQDOUBLE_BEDGE_BOTTOMRIGHT 2
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#define DQDOUBLE_BEDGE_BOTTOMLEFT 3
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//@}
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/** MV modes for P frames */
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//@{
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#define MV_PMODE_1MV_HPEL_BILIN 0
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#define MV_PMODE_1MV 1
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#define MV_PMODE_1MV_HPEL 2
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#define MV_PMODE_MIXED_MV 3
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#define MV_PMODE_INTENSITY_COMP 4
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//@}
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/** @name MV types for B frames */
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//@{
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#define BMV_TYPE_BACKWARD 0
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#define BMV_TYPE_BACKWARD 0
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#define BMV_TYPE_FORWARD 1
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#define BMV_TYPE_INTERPOLATED 3
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//@}
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/** MV P mode - the 5th element is only used for mode 1 */
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static const uint8_t mv_pmode_table[2][5] = {
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{ MV_PMODE_1MV_HPEL_BILIN, MV_PMODE_1MV, MV_PMODE_1MV_HPEL, MV_PMODE_MIXED_MV, MV_PMODE_INTENSITY_COMP },
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{ MV_PMODE_1MV, MV_PMODE_MIXED_MV, MV_PMODE_1MV_HPEL, MV_PMODE_1MV_HPEL_BILIN, MV_PMODE_INTENSITY_COMP }
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};
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/** One more frame type */
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#define BI_TYPE 7
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static const int fps_nr[5] = { 24, 25, 30, 50, 60 },
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fps_dr[2] = { 1000, 1001 };
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static const uint8_t pquant_table[3][32] = {
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{ /* Implicit quantizer */
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0, 1, 2, 3, 4, 5, 6, 7, 8, 6, 7, 8, 9, 10, 11, 12,
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13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 27, 29, 31
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},
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{ /* Explicit quantizer, pquantizer uniform */
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
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16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
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},
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{ /* Explicit quantizer, pquantizer non-uniform */
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0, 1, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13,
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14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 29, 31
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}
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};
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/** @name VC-9 VLC tables and defines
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* @todo TODO move this into the context
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*/
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//@{
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#define VC9_BFRACTION_VLC_BITS 7
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static VLC vc9_bfraction_vlc;
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#define VC9_IMODE_VLC_BITS 4
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static VLC vc9_imode_vlc;
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#define VC9_NORM2_VLC_BITS 3
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static VLC vc9_norm2_vlc;
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#define VC9_NORM6_VLC_BITS 9
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static VLC vc9_norm6_vlc;
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/* Could be optimized, one table only needs 8 bits */
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#define VC9_TTMB_VLC_BITS 9 //12
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static VLC vc9_ttmb_vlc[3];
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#define VC9_MV_DIFF_VLC_BITS 9 //15
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static VLC vc9_mv_diff_vlc[4];
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#define VC9_CBPCY_P_VLC_BITS 9 //14
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static VLC vc9_cbpcy_p_vlc[4];
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#define VC9_4MV_BLOCK_PATTERN_VLC_BITS 6
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static VLC vc9_4mv_block_pattern_vlc[4];
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#define VC9_TTBLK_VLC_BITS 5
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static VLC vc9_ttblk_vlc[3];
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#define VC9_SUBBLKPAT_VLC_BITS 6
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static VLC vc9_subblkpat_vlc[3];
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//@}
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/** Bitplane struct
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* We mainly need data and is_raw, so this struct could be avoided
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* to save a level of indirection; feel free to modify
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* @fixme For now, stride=width
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* @warning Data are bits, either 1 or 0
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*/
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typedef struct BitPlane {
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uint8_t *data; ///< Data buffer
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int width; ///< Width of the buffer
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int stride; ///< Stride of the buffer
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int height; ///< Plane height
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uint8_t is_raw; ///< Bit values must be read at MB level
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} BitPlane;
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/** The VC9 Context
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* @fixme Change size wherever another size is more efficient
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* Many members are only used for Advanced Profile
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*/
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typedef struct VC9Context{
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MpegEncContext s;
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/** Simple/Main Profile sequence header */
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//@{
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int res_sm; ///< reserved, 2b
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int res_x8; ///< reserved
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int multires; ///< frame-level RESPIC syntax element present
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int res_fasttx; ///< reserved, always 1
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int res_transtab; ///< reserved, always 0
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int rangered; ///< RANGEREDFRM (range reduction) syntax element present
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///< at frame level
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int res_rtm_flag; ///< reserved, set to 1
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int reserved; ///< reserved
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//@}
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#if HAS_ADVANCED_PROFILE
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/** Advanced Profile */
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//@{
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int level; ///< 3bits, for Advanced/Simple Profile, provided by TS layer
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int chromaformat; ///< 2bits, 2=4:2:0, only defined
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int postprocflag; ///< Per-frame processing suggestion flag present
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int broadcast; ///< TFF/RFF present
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int interlace; ///< Progressive/interlaced (RPTFTM syntax element)
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int tfcntrflag; ///< TFCNTR present
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int panscanflag; ///< NUMPANSCANWIN, TOPLEFT{X,Y}, BOTRIGHT{X,Y} present
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int extended_dmv; ///< Additional extended dmv range at P/B frame-level
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int color_prim; ///< 8bits, chroma coordinates of the color primaries
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int transfer_char; ///< 8bits, Opto-electronic transfer characteristics
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int matrix_coef; ///< 8bits, Color primaries->YCbCr transform matrix
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int hrd_param_flag; ///< Presence of Hypothetical Reference
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///< Decoder parameters
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//@}
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#endif
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/** Sequence header data for all Profiles
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* TODO: choose between ints, uint8_ts and monobit flags
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*/
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//@{
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int profile; ///< 2bits, Profile
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int frmrtq_postproc; ///< 3bits,
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int bitrtq_postproc; ///< 5bits, quantized framerate-based postprocessing strength
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int fastuvmc; ///< Rounding of qpel vector to hpel ? (not in Simple)
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int extended_mv; ///< Ext MV in P/B (not in Simple)
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int dquant; ///< How qscale varies with MBs, 2bits (not in Simple)
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int vstransform; ///< variable-size [48]x[48] transform type + info
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int overlap; ///< overlapped transforms in use
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int quantizer_mode; ///< 2bits, quantizer mode used for sequence, see QUANT_*
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int finterpflag; ///< INTERPFRM present
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//@}
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/** Frame decoding info for all profiles */
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//@{
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uint8_t mv_mode; ///< MV coding monde
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uint8_t mv_mode2; ///< Secondary MV coding mode (B frames)
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int k_x; ///< Number of bits for MVs (depends on MV range)
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int k_y; ///< Number of bits for MVs (depends on MV range)
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uint8_t pq, altpq; ///< Current/alternate frame quantizer scale
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/** pquant parameters */
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//@{
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uint8_t dquantfrm;
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uint8_t dqprofile;
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uint8_t dqsbedge;
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uint8_t dqbilevel;
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//@}
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/** AC coding set indexes
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* @see 8.1.1.10, p(1)10
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*/
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//@{
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int c_ac_table_index; ///< Chroma index from ACFRM element
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int y_ac_table_index; ///< Luma index from AC2FRM element
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//@}
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int ttfrm; ///< Transform type info present at frame level
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uint8_t ttmbf; ///< Transform type flag
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int ttmb; ///< Transform type
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uint8_t ttblk4x4; ///< Value of ttblk which indicates a 4x4 transform
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/** Luma compensation parameters */
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//@{
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uint8_t lumscale;
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uint8_t lumshift;
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//@}
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int16_t bfraction; ///< Relative position % anchors=> how to scale MVs
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uint8_t halfpq; ///< Uniform quant over image and qp+.5
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uint8_t respic; ///< Frame-level flag for resized images
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int buffer_fullness; ///< HRD info
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/** Ranges:
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* -# 0 -> [-64n 63.f] x [-32, 31.f]
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* -# 1 -> [-128, 127.f] x [-64, 63.f]
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* -# 2 -> [-512, 511.f] x [-128, 127.f]
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* -# 3 -> [-1024, 1023.f] x [-256, 255.f]
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*/
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uint8_t mvrange;
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uint8_t pquantizer; ///< Uniform (over sequence) quantizer in use
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uint8_t *previous_line_cbpcy; ///< To use for predicted CBPCY
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VLC *cbpcy_vlc; ///< CBPCY VLC table
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int tt_index; ///< Index for Transform Type tables
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BitPlane mv_type_mb_plane; ///< bitplane for mv_type == (4MV)
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BitPlane skip_mb_plane; ///< bitplane for skipped MBs
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BitPlane direct_mb_plane; ///< bitplane for "direct" MBs
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/** Frame decoding info for S/M profiles only */
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//@{
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uint8_t rangeredfrm; ///< out_sample = CLIP((in_sample-128)*2+128)
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uint8_t interpfrm;
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//@}
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#if HAS_ADVANCED_PROFILE
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/** Frame decoding info for Advanced profile */
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//@{
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uint8_t fcm; ///< 0->Progressive, 2->Frame-Interlace, 3->Field-Interlace
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uint8_t numpanscanwin;
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uint8_t tfcntr;
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uint8_t rptfrm, tff, rff;
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uint16_t topleftx;
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uint16_t toplefty;
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uint16_t bottomrightx;
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uint16_t bottomrighty;
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uint8_t uvsamp;
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uint8_t postproc;
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int hrd_num_leaky_buckets;
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uint8_t bit_rate_exponent;
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uint8_t buffer_size_exponent;
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BitPlane ac_pred_plane; ///< AC prediction flags bitplane
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BitPlane over_flags_plane; ///< Overflags bitplane
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uint8_t condover;
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uint16_t *hrd_rate, *hrd_buffer;
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uint8_t *hrd_fullness;
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uint8_t range_mapy_flag;
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uint8_t range_mapuv_flag;
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uint8_t range_mapy;
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uint8_t range_mapuv;
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//@}
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#endif
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} VC9Context;
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/**
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* Get unary code of limited length
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* @fixme FIXME Slow and ugly
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* @param gb GetBitContext
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* @param[in] stop The bitstop value (unary code of 1's or 0's)
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* @param[in] len Maximum length
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* @return Unary length/index
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*/
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static int get_prefix(GetBitContext *gb, int stop, int len)
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{
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#if 1
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int i = 0, tmp = !stop;
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while (i != len && tmp != stop)
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{
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tmp = get_bits(gb, 1);
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i++;
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}
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if (i == len && tmp != stop) return len+1;
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return i;
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#else
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unsigned int buf;
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int log;
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OPEN_READER(re, gb);
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UPDATE_CACHE(re, gb);
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buf=GET_CACHE(re, gb); //Still not sure
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if (stop) buf = ~buf;
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log= av_log2(-buf); //FIXME: -?
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if (log < limit){
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LAST_SKIP_BITS(re, gb, log+1);
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CLOSE_READER(re, gb);
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return log;
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}
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LAST_SKIP_BITS(re, gb, limit);
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CLOSE_READER(re, gb);
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return limit;
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#endif
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}
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/**
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* Init VC-9 specific tables and VC9Context members
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* @param v The VC9Context to initialize
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* @return Status
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*/
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static int vc9_init_common(VC9Context *v)
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{
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static int done = 0;
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int i = 0;
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/* Set the bit planes */
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v->mv_type_mb_plane = (struct BitPlane) { NULL, 0, 0, 0 };
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v->direct_mb_plane = (struct BitPlane) { NULL, 0, 0, 0 };
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v->skip_mb_plane = (struct BitPlane) { NULL, 0, 0, 0 };
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#if HAS_ADVANCED_PROFILE
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v->ac_pred_plane = v->over_flags_plane = (struct BitPlane) { NULL, 0, 0, 0 };
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v->hrd_rate = v->hrd_buffer = NULL;
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#endif
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/* VLC tables */
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#if 0 // spec -> actual tables converter
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for(i=0; i<64; i++){
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int code= (vc9_norm6_spec[i][1] << vc9_norm6_spec[i][4]) + vc9_norm6_spec[i][3];
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av_log(NULL, AV_LOG_DEBUG, "0x%03X, ", code);
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if(i%16==15) av_log(NULL, AV_LOG_DEBUG, "\n");
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}
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for(i=0; i<64; i++){
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int code= vc9_norm6_spec[i][2] + vc9_norm6_spec[i][4];
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av_log(NULL, AV_LOG_DEBUG, "%2d, ", code);
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if(i%16==15) av_log(NULL, AV_LOG_DEBUG, "\n");
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}
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#endif
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if(!done)
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{
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done = 1;
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INIT_VLC(&vc9_bfraction_vlc, VC9_BFRACTION_VLC_BITS, 23,
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vc9_bfraction_bits, 1, 1,
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vc9_bfraction_codes, 1, 1, 1);
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INIT_VLC(&vc9_norm2_vlc, VC9_NORM2_VLC_BITS, 4,
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vc9_norm2_bits, 1, 1,
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vc9_norm2_codes, 1, 1, 1);
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INIT_VLC(&vc9_norm6_vlc, VC9_NORM6_VLC_BITS, 64,
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vc9_norm6_bits, 1, 1,
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vc9_norm6_codes, 2, 2, 1);
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INIT_VLC(&vc9_imode_vlc, VC9_IMODE_VLC_BITS, 7,
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vc9_imode_bits, 1, 1,
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vc9_imode_codes, 1, 1, 1);
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for (i=0; i<3; i++)
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{
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INIT_VLC(&vc9_ttmb_vlc[i], VC9_TTMB_VLC_BITS, 16,
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vc9_ttmb_bits[i], 1, 1,
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vc9_ttmb_codes[i], 2, 2, 1);
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INIT_VLC(&vc9_ttblk_vlc[i], VC9_TTBLK_VLC_BITS, 8,
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vc9_ttblk_bits[i], 1, 1,
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vc9_ttblk_codes[i], 1, 1, 1);
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INIT_VLC(&vc9_subblkpat_vlc[i], VC9_SUBBLKPAT_VLC_BITS, 15,
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vc9_subblkpat_bits[i], 1, 1,
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vc9_subblkpat_codes[i], 1, 1, 1);
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}
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for(i=0; i<4; i++)
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{
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INIT_VLC(&vc9_4mv_block_pattern_vlc[i], VC9_4MV_BLOCK_PATTERN_VLC_BITS, 16,
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vc9_4mv_block_pattern_bits[i], 1, 1,
|
|
vc9_4mv_block_pattern_codes[i], 1, 1, 1);
|
|
INIT_VLC(&vc9_cbpcy_p_vlc[i], VC9_CBPCY_P_VLC_BITS, 64,
|
|
vc9_cbpcy_p_bits[i], 1, 1,
|
|
vc9_cbpcy_p_codes[i], 2, 2, 1);
|
|
INIT_VLC(&vc9_mv_diff_vlc[i], VC9_MV_DIFF_VLC_BITS, 73,
|
|
vc9_mv_diff_bits[i], 1, 1,
|
|
vc9_mv_diff_codes[i], 2, 2, 1);
|
|
}
|
|
}
|
|
|
|
/* Other defaults */
|
|
v->pq = -1;
|
|
v->mvrange = 0; /* 7.1.1.18, p80 */
|
|
|
|
return 0;
|
|
}
|
|
|
|
#if HAS_ADVANCED_PROFILE
|
|
/**
|
|
* Decode sequence header's Hypothetic Reference Decoder data
|
|
* @see 6.2.1, p32
|
|
* @param v The VC9Context to initialize
|
|
* @param gb A GetBitContext initialized from AVCodecContext extra_data
|
|
* @return Status
|
|
*/
|
|
static int decode_hrd(VC9Context *v, GetBitContext *gb)
|
|
{
|
|
int i, num;
|
|
|
|
num = 1 + get_bits(gb, 5);
|
|
|
|
/*hrd rate*/
|
|
if (v->hrd_rate || num != v->hrd_num_leaky_buckets)
|
|
{
|
|
av_freep(&v->hrd_rate);
|
|
}
|
|
if (!v->hrd_rate) v->hrd_rate = av_malloc(num*sizeof(uint16_t));
|
|
if (!v->hrd_rate) return -1;
|
|
|
|
/*hrd buffer*/
|
|
if (v->hrd_buffer || num != v->hrd_num_leaky_buckets)
|
|
{
|
|
av_freep(&v->hrd_buffer);
|
|
}
|
|
if (!v->hrd_buffer) v->hrd_buffer = av_malloc(num*sizeof(uint16_t));
|
|
if (!v->hrd_buffer)
|
|
{
|
|
av_freep(&v->hrd_rate);
|
|
return -1;
|
|
}
|
|
|
|
/*hrd fullness*/
|
|
if (v->hrd_fullness || num != v->hrd_num_leaky_buckets)
|
|
{
|
|
av_freep(&v->hrd_buffer);
|
|
}
|
|
if (!v->hrd_fullness) v->hrd_fullness = av_malloc(num*sizeof(uint8_t));
|
|
if (!v->hrd_fullness)
|
|
{
|
|
av_freep(&v->hrd_rate);
|
|
av_freep(&v->hrd_buffer);
|
|
return -1;
|
|
}
|
|
v->hrd_num_leaky_buckets = num;
|
|
|
|
//exponent in base-2 for rate
|
|
v->bit_rate_exponent = 6 + get_bits(gb, 4);
|
|
//exponent in base-2 for buffer_size
|
|
v->buffer_size_exponent = 4 + get_bits(gb, 4);
|
|
|
|
for (i=0; i<num; i++)
|
|
{
|
|
//mantissae, ordered (if not, use a function ?
|
|
v->hrd_rate[i] = 1 + get_bits(gb, 16);
|
|
if (i && v->hrd_rate[i-1]>=v->hrd_rate[i])
|
|
{
|
|
av_log(v->s.avctx, AV_LOG_ERROR, "HDR Rates aren't strictly increasing:"
|
|
"%i vs %i\n", v->hrd_rate[i-1], v->hrd_rate[i]);
|
|
return -1;
|
|
}
|
|
v->hrd_buffer[i] = 1 + get_bits(gb, 16);
|
|
if (i && v->hrd_buffer[i-1]<v->hrd_buffer[i])
|
|
{
|
|
av_log(v->s.avctx, AV_LOG_ERROR, "HDR Buffers aren't decreasing:"
|
|
"%i vs %i\n", v->hrd_buffer[i-1], v->hrd_buffer[i]);
|
|
return -1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Decode sequence header for Advanced Profile
|
|
* @see Table 2, p18
|
|
* @see 6.1.7, pp21-27
|
|
* @param v The VC9Context to initialize
|
|
* @param gb A GetBitContext initialized from AVCodecContext extra_data
|
|
* @return Status
|
|
*/
|
|
static int decode_advanced_sequence_header(AVCodecContext *avctx, GetBitContext *gb)
|
|
{
|
|
VC9Context *v = avctx->priv_data;
|
|
int nr, dr, aspect_ratio;
|
|
|
|
v->postprocflag = get_bits(gb, 1);
|
|
v->broadcast = get_bits(gb, 1);
|
|
v->interlace = get_bits(gb, 1);
|
|
|
|
v->tfcntrflag = get_bits(gb, 1);
|
|
v->finterpflag = get_bits(gb, 1); //common
|
|
v->panscanflag = get_bits(gb, 1);
|
|
v->reserved = get_bits(gb, 1);
|
|
if (v->reserved)
|
|
{
|
|
av_log(avctx, AV_LOG_ERROR, "RESERVED should be 0 (is %i)\n",
|
|
v->reserved);
|
|
return -1;
|
|
}
|
|
if (v->extended_mv)
|
|
v->extended_dmv = get_bits(gb, 1);
|
|
|
|
/* 6.1.7, p21 */
|
|
if (get_bits(gb, 1) /* pic_size_flag */)
|
|
{
|
|
avctx->coded_width = get_bits(gb, 12) << 1;
|
|
avctx->coded_height = get_bits(gb, 12) << 1;
|
|
if ( get_bits(gb, 1) /* disp_size_flag */)
|
|
{
|
|
avctx->width = get_bits(gb, 14);
|
|
avctx->height = get_bits(gb, 14);
|
|
}
|
|
|
|
/* 6.1.7.4, p23 */
|
|
if ( get_bits(gb, 1) /* aspect_ratio_flag */)
|
|
{
|
|
aspect_ratio = get_bits(gb, 4); //SAR
|
|
if (aspect_ratio == 0x0F) //FF_ASPECT_EXTENDED
|
|
{
|
|
avctx->sample_aspect_ratio.num = 1 + get_bits(gb, 8);
|
|
avctx->sample_aspect_ratio.den = 1 + get_bits(gb, 8);
|
|
}
|
|
else if (aspect_ratio == 0x0E)
|
|
{
|
|
av_log(avctx, AV_LOG_DEBUG, "Reserved AR found\n");
|
|
}
|
|
else
|
|
{
|
|
avctx->sample_aspect_ratio = vc9_pixel_aspect[aspect_ratio];
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
avctx->coded_width = avctx->width;
|
|
avctx->coded_height = avctx->height;
|
|
}
|
|
|
|
/* 6.1.8, p23 */
|
|
if ( get_bits(gb, 1) /* framerateflag */)
|
|
{
|
|
if ( !get_bits(gb, 1) /* framerateind */)
|
|
{
|
|
nr = get_bits(gb, 8);
|
|
dr = get_bits(gb, 4);
|
|
if (nr<1)
|
|
{
|
|
av_log(avctx, AV_LOG_ERROR, "0 is forbidden for FRAMERATENR\n");
|
|
return -1;
|
|
}
|
|
if (nr>5)
|
|
{
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Reserved FRAMERATENR %i not handled\n", nr);
|
|
nr = 5; /* overflow protection */
|
|
}
|
|
if (dr<1)
|
|
{
|
|
av_log(avctx, AV_LOG_ERROR, "0 is forbidden for FRAMERATEDR\n");
|
|
return -1;
|
|
}
|
|
if (dr>2)
|
|
{
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Reserved FRAMERATEDR %i not handled\n", dr);
|
|
dr = 2; /* overflow protection */
|
|
}
|
|
avctx->time_base.num = fps_nr[dr - 1];
|
|
avctx->time_base.den = fps_nr[nr - 1];
|
|
}
|
|
else
|
|
{
|
|
nr = get_bits(gb, 16);
|
|
// 0.03125->2048Hz / 0.03125Hz
|
|
avctx->time_base.den = 1000000;
|
|
avctx->time_base.num = 31250*(1+nr);
|
|
}
|
|
}
|
|
|
|
/* 6.1.9, p25 */
|
|
if ( get_bits(gb, 1) /* color_format_flag */)
|
|
{
|
|
//Chromacity coordinates of color primaries
|
|
//like ITU-R BT.709-2, BT.470-2, ...
|
|
v->color_prim = get_bits(gb, 8);
|
|
if (v->color_prim<1)
|
|
{
|
|
av_log(avctx, AV_LOG_ERROR, "0 for COLOR_PRIM is forbidden\n");
|
|
return -1;
|
|
}
|
|
if (v->color_prim == 3 || v->color_prim>6)
|
|
{
|
|
av_log(avctx, AV_LOG_DEBUG, "Reserved COLOR_PRIM %i found\n",
|
|
v->color_prim);
|
|
return -1;
|
|
}
|
|
|
|
//Opto-electronic transfer characteristics
|
|
v->transfer_char = get_bits(gb, 8);
|
|
if (v->transfer_char < 1)
|
|
{
|
|
av_log(avctx, AV_LOG_ERROR, "0 for TRAMSFER_CHAR is forbidden\n");
|
|
return -1;
|
|
}
|
|
if (v->transfer_char == 3 || v->transfer_char>8)
|
|
{
|
|
av_log(avctx, AV_LOG_DEBUG, "Reserved TRANSFERT_CHAR %i found\n",
|
|
v->color_prim);
|
|
return -1;
|
|
}
|
|
|
|
//Matrix coefficient for primariev->YCbCr
|
|
v->matrix_coef = get_bits(gb, 8);
|
|
if (v->matrix_coef < 1)
|
|
{
|
|
av_log(avctx, AV_LOG_ERROR, "0 for MATRIX_COEF is forbidden\n");
|
|
return -1;
|
|
}
|
|
if ((v->matrix_coef > 2 && v->matrix_coef < 6) || v->matrix_coef > 7)
|
|
{
|
|
av_log(avctx, AV_LOG_DEBUG, "Reserved MATRIX_COEF %i found\n",
|
|
v->color_prim);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
//Hypothetical reference decoder indicator flag
|
|
v->hrd_param_flag = get_bits(gb, 1);
|
|
if (v->hrd_param_flag)
|
|
{
|
|
if (decode_hrd(v, gb) < 0) return -1;
|
|
}
|
|
|
|
/*reset scaling ranges, 6.2.2 & 6.2.3, p33*/
|
|
v->range_mapy_flag = 0;
|
|
v->range_mapuv_flag = 0;
|
|
|
|
av_log(avctx, AV_LOG_DEBUG, "Advanced profile not supported yet\n");
|
|
return -1;
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
VC9Context *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 == 2)
|
|
{
|
|
av_log(avctx, AV_LOG_ERROR, "Profile value 2 is forbidden\n");
|
|
return -1;
|
|
}
|
|
|
|
#if HAS_ADVANCED_PROFILE
|
|
if (v->profile == PROFILE_ADVANCED)
|
|
{
|
|
v->level = get_bits(gb, 3);
|
|
if(v->level >= 5)
|
|
{
|
|
av_log(avctx, AV_LOG_ERROR, "Reserved LEVEL %i\n",v->level);
|
|
}
|
|
v->chromaformat = get_bits(gb, 2);
|
|
if (v->chromaformat != 1)
|
|
{
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Only 4:2:0 chroma format supported\n");
|
|
return -1;
|
|
}
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
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_bits(gb, 1); //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 HAS_ADVANCED_PROFILE
|
|
if (v->profile < PROFILE_ADVANCED)
|
|
#endif
|
|
{
|
|
v->res_x8 = get_bits(gb, 1); //reserved
|
|
if (v->res_x8)
|
|
{
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"1 for reserved RES_X8 is forbidden\n");
|
|
//return -1;
|
|
}
|
|
v->multires = get_bits(gb, 1);
|
|
v->res_fasttx = get_bits(gb, 1);
|
|
if (!v->res_fasttx)
|
|
{
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"0 for reserved RES_FASTTX is forbidden\n");
|
|
//return -1;
|
|
}
|
|
}
|
|
|
|
v->fastuvmc = get_bits(gb, 1); //common
|
|
if (!v->profile && !v->fastuvmc)
|
|
{
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"FASTUVMC unavailable in Simple Profile\n");
|
|
return -1;
|
|
}
|
|
v->extended_mv = get_bits(gb, 1); //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_bits(gb, 1); //common
|
|
|
|
#if HAS_ADVANCED_PROFILE
|
|
if (v->profile < PROFILE_ADVANCED)
|
|
#endif
|
|
{
|
|
v->res_transtab = get_bits(gb, 1);
|
|
if (v->res_transtab)
|
|
{
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"1 for reserved RES_TRANSTAB is forbidden\n");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
v->overlap = get_bits(gb, 1); //common
|
|
|
|
#if HAS_ADVANCED_PROFILE
|
|
if (v->profile < PROFILE_ADVANCED)
|
|
#endif
|
|
{
|
|
v->s.resync_marker = get_bits(gb, 1);
|
|
v->rangered = get_bits(gb, 1);
|
|
if (v->rangered && v->profile == PROFILE_SIMPLE)
|
|
{
|
|
av_log(avctx, AV_LOG_DEBUG,
|
|
"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
|
|
|
|
#if HAS_ADVANCED_PROFILE
|
|
if (v->profile < PROFILE_ADVANCED)
|
|
#endif
|
|
{
|
|
v->finterpflag = get_bits(gb, 1); //common
|
|
v->res_rtm_flag = get_bits(gb, 1); //reserved
|
|
if (!v->res_rtm_flag)
|
|
{
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"0 for reserved RES_RTM_FLAG is forbidden\n");
|
|
//return -1;
|
|
}
|
|
#if TRACE
|
|
av_log(avctx, AV_LOG_INFO,
|
|
"Profile %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
|
|
"LoopFilter=%i, MultiRes=%i, FastUVMV=%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;
|
|
#endif
|
|
}
|
|
#if HAS_ADVANCED_PROFILE
|
|
else return decode_advanced_sequence_header(avctx, gb);
|
|
#endif
|
|
}
|
|
|
|
|
|
#if HAS_ADVANCED_PROFILE
|
|
/** Entry point decoding (Advanced Profile)
|
|
* @param avctx Codec context
|
|
* @param gb GetBit context initialized from avctx->extra_data
|
|
* @return Status
|
|
*/
|
|
static int advanced_entry_point_process(AVCodecContext *avctx, GetBitContext *gb)
|
|
{
|
|
VC9Context *v = avctx->priv_data;
|
|
int i;
|
|
if (v->profile != PROFILE_ADVANCED)
|
|
{
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Entry point are only defined in Advanced Profile!\n");
|
|
return -1; //Only for advanced profile!
|
|
}
|
|
if (v->hrd_param_flag)
|
|
{
|
|
//Update buffer fullness
|
|
av_log(avctx, AV_LOG_DEBUG, "Buffer fullness update\n");
|
|
assert(v->hrd_num_leaky_buckets > 0);
|
|
for (i=0; i<v->hrd_num_leaky_buckets; i++)
|
|
v->hrd_fullness[i] = get_bits(gb, 8);
|
|
}
|
|
if ((v->range_mapy_flag = get_bits(gb, 1)))
|
|
{
|
|
//RANGE_MAPY
|
|
av_log(avctx, AV_LOG_DEBUG, "RANGE_MAPY\n");
|
|
v->range_mapy = get_bits(gb, 3);
|
|
}
|
|
if ((v->range_mapuv_flag = get_bits(gb, 1)))
|
|
{
|
|
//RANGE_MAPUV
|
|
av_log(avctx, AV_LOG_DEBUG, "RANGE_MAPUV\n");
|
|
v->range_mapuv = get_bits(gb, 3);
|
|
}
|
|
if (v->panscanflag)
|
|
{
|
|
//NUMPANSCANWIN
|
|
v->numpanscanwin = get_bits(gb, 3);
|
|
av_log(avctx, AV_LOG_DEBUG, "NUMPANSCANWIN: %u\n", v->numpanscanwin);
|
|
}
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/***********************************************************************/
|
|
/**
|
|
* @defgroup bitplane VC9 Bitplane decoding
|
|
* @see 8.7, p56
|
|
* @{
|
|
*/
|
|
|
|
/** @addtogroup bitplane
|
|
* Imode types
|
|
* @{
|
|
*/
|
|
#define IMODE_RAW 0
|
|
#define IMODE_NORM2 1
|
|
#define IMODE_DIFF2 2
|
|
#define IMODE_NORM6 3
|
|
#define IMODE_DIFF6 4
|
|
#define IMODE_ROWSKIP 5
|
|
#define IMODE_COLSKIP 6
|
|
/** @} */ //imode defines
|
|
|
|
/** Allocate the buffer from a bitplane, given its dimensions
|
|
* @param bp Bitplane which buffer is to allocate
|
|
* @param[in] width Width of the buffer
|
|
* @param[in] height Height of the buffer
|
|
* @return Status
|
|
* @todo TODO: Take into account stride
|
|
* @todo TODO: Allow use of external buffers ?
|
|
*/
|
|
int alloc_bitplane(BitPlane *bp, int width, int height)
|
|
{
|
|
if (!bp || bp->width<0 || bp->height<0) return -1;
|
|
bp->data = (uint8_t*)av_malloc(width*height);
|
|
if (!bp->data) return -1;
|
|
bp->width = bp->stride = width;
|
|
bp->height = height;
|
|
return 0;
|
|
}
|
|
|
|
/** Free the bitplane's buffer
|
|
* @param bp Bitplane which buffer is to free
|
|
*/
|
|
void free_bitplane(BitPlane *bp)
|
|
{
|
|
bp->width = bp->stride = bp->height = 0;
|
|
if (bp->data) av_freep(&bp->data);
|
|
}
|
|
|
|
/** Decode rows by checking if they are skipped
|
|
* @param plane Buffer to store decoded bits
|
|
* @param[in] width Width of this buffer
|
|
* @param[in] height Height of this buffer
|
|
* @param[in] stride of this buffer
|
|
*/
|
|
static void decode_rowskip(uint8_t* plane, int width, int height, int stride, GetBitContext *gb){
|
|
int x, y;
|
|
|
|
for (y=0; y<height; y++){
|
|
if (!get_bits(gb, 1)) //rowskip
|
|
memset(plane, 0, width);
|
|
else
|
|
for (x=0; x<width; x++)
|
|
plane[x] = get_bits(gb, 1);
|
|
plane += stride;
|
|
}
|
|
}
|
|
|
|
/** Decode columns by checking if they are skipped
|
|
* @param plane Buffer to store decoded bits
|
|
* @param[in] width Width of this buffer
|
|
* @param[in] height Height of this buffer
|
|
* @param[in] stride of this buffer
|
|
* @fixme FIXME: Optimize
|
|
*/
|
|
static void decode_colskip(uint8_t* plane, int width, int height, int stride, GetBitContext *gb){
|
|
int x, y;
|
|
|
|
for (x=0; x<width; x++){
|
|
if (!get_bits(gb, 1)) //colskip
|
|
for (y=0; y<height; y++)
|
|
plane[y*stride] = 0;
|
|
else
|
|
for (y=0; y<height; y++)
|
|
plane[y*stride] = get_bits(gb, 1);
|
|
plane ++;
|
|
}
|
|
}
|
|
|
|
/** Decode a bitplane's bits
|
|
* @param bp Bitplane where to store the decode bits
|
|
* @param v VC9 context for bit reading and logging
|
|
* @return Status
|
|
* @fixme FIXME: Optimize
|
|
* @todo TODO: Decide if a struct is needed
|
|
*/
|
|
static int bitplane_decoding(BitPlane *bp, VC9Context *v)
|
|
{
|
|
GetBitContext *gb = &v->s.gb;
|
|
|
|
int imode, x, y, code, use_vertical_tile, tile_w, tile_h, offset;
|
|
uint8_t invert, *planep = bp->data;
|
|
|
|
invert = get_bits(gb, 1);
|
|
imode = get_vlc2(gb, vc9_imode_vlc.table, VC9_IMODE_VLC_BITS, 2);
|
|
|
|
bp->is_raw = 0;
|
|
switch (imode)
|
|
{
|
|
case IMODE_RAW:
|
|
//Data is actually read in the MB layer (same for all tests == "raw")
|
|
bp->is_raw = 1; //invert ignored
|
|
return invert;
|
|
case IMODE_DIFF2:
|
|
case IMODE_NORM2:
|
|
if ((bp->height*bp->width) & 1)
|
|
{
|
|
*(++planep) = get_bits(gb, 1);
|
|
offset = x = 1;
|
|
}
|
|
else offset = x = 0;
|
|
|
|
for (y=0; y<bp->height; y++)
|
|
{
|
|
for(; x<bp->width; x+=2)
|
|
{
|
|
code = get_vlc2(gb, vc9_norm2_vlc.table, VC9_NORM2_VLC_BITS, 2);
|
|
*(++planep) = code&1; //lsb => left
|
|
*(++planep) = (code>>1)&1; //msb => right
|
|
}
|
|
planep += bp->stride-bp->width;
|
|
if ((bp->width-offset)&1) //Odd number previously processed
|
|
{
|
|
code = get_vlc2(gb, vc9_norm2_vlc.table, VC9_NORM2_VLC_BITS, 2);
|
|
*planep = code&1;
|
|
planep += bp->stride-bp->width;
|
|
*planep = (code>>1)&1; //msb => right
|
|
offset = x = 1;
|
|
}
|
|
else
|
|
{
|
|
offset = x = 0;
|
|
planep += bp->stride-bp->width;
|
|
}
|
|
}
|
|
break;
|
|
case IMODE_DIFF6:
|
|
case IMODE_NORM6:
|
|
use_vertical_tile= bp->height%3==0 && bp->width%3!=0;
|
|
tile_w= use_vertical_tile ? 2 : 3;
|
|
tile_h= use_vertical_tile ? 3 : 2;
|
|
|
|
for(y= bp->height%tile_h; y< bp->height; y+=tile_h){
|
|
for(x= bp->width%tile_w; x< bp->width; x+=tile_w){
|
|
code = get_vlc2(gb, vc9_norm6_vlc.table, VC9_NORM6_VLC_BITS, 2);
|
|
if(code<0){
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
|
|
return -1;
|
|
}
|
|
//FIXME following is a pure guess and probably wrong
|
|
//FIXME A bitplane (0 | !0), so could the shifts be avoided ?
|
|
planep[x + 0*bp->stride]= (code>>0)&1;
|
|
planep[x + 1 + 0*bp->stride]= (code>>1)&1;
|
|
//FIXME Does branch prediction help here?
|
|
if(use_vertical_tile){
|
|
planep[x + 0 + 1*bp->stride]= (code>>2)&1;
|
|
planep[x + 1 + 1*bp->stride]= (code>>3)&1;
|
|
planep[x + 0 + 2*bp->stride]= (code>>4)&1;
|
|
planep[x + 1 + 2*bp->stride]= (code>>5)&1;
|
|
}else{
|
|
planep[x + 2 + 0*bp->stride]= (code>>2)&1;
|
|
planep[x + 0 + 1*bp->stride]= (code>>3)&1;
|
|
planep[x + 1 + 1*bp->stride]= (code>>4)&1;
|
|
planep[x + 2 + 1*bp->stride]= (code>>5)&1;
|
|
}
|
|
}
|
|
}
|
|
|
|
x= bp->width % tile_w;
|
|
decode_colskip(bp->data , x, bp->height , bp->stride, &v->s.gb);
|
|
decode_rowskip(bp->data+x, bp->width - x, bp->height % tile_h, bp->stride, &v->s.gb);
|
|
|
|
break;
|
|
case IMODE_ROWSKIP:
|
|
decode_rowskip(bp->data, bp->width, bp->height, bp->stride, &v->s.gb);
|
|
break;
|
|
case IMODE_COLSKIP:
|
|
decode_colskip(bp->data, bp->width, bp->height, bp->stride, &v->s.gb);
|
|
break;
|
|
default: break;
|
|
}
|
|
|
|
/* Applying diff operator */
|
|
if (imode == IMODE_DIFF2 || imode == IMODE_DIFF6)
|
|
{
|
|
planep = bp->data;
|
|
planep[0] ^= invert;
|
|
for (x=1; x<bp->width; x++)
|
|
planep[x] ^= planep[x-1];
|
|
for (y=1; y<bp->height; y++)
|
|
{
|
|
planep += bp->stride;
|
|
planep[0] ^= planep[-bp->stride];
|
|
for (x=1; x<bp->width; x++)
|
|
{
|
|
if (planep[x-1] != planep[x-bp->stride]) planep[x] ^= invert;
|
|
else planep[x] ^= planep[x-1];
|
|
}
|
|
}
|
|
}
|
|
else if (invert)
|
|
{
|
|
planep = bp->data;
|
|
for (x=0; x<bp->width*bp->height; x++) planep[x] = !planep[x]; //FIXME stride
|
|
}
|
|
return (imode<<1) + invert;
|
|
}
|
|
/** @} */ //Bitplane group
|
|
|
|
/***********************************************************************/
|
|
/** VOP Dquant decoding
|
|
* @param v VC9 Context
|
|
*/
|
|
static int vop_dquant_decoding(VC9Context *v)
|
|
{
|
|
GetBitContext *gb = &v->s.gb;
|
|
int pqdiff;
|
|
|
|
//variable size
|
|
if (v->dquant == 2)
|
|
{
|
|
pqdiff = get_bits(gb, 3);
|
|
if (pqdiff == 7) v->altpq = get_bits(gb, 5);
|
|
else v->altpq = v->pq + pqdiff + 1;
|
|
}
|
|
else
|
|
{
|
|
v->dquantfrm = get_bits(gb, 1);
|
|
if ( v->dquantfrm )
|
|
{
|
|
v->dqprofile = get_bits(gb, 2);
|
|
switch (v->dqprofile)
|
|
{
|
|
case DQPROFILE_SINGLE_EDGE:
|
|
case DQPROFILE_DOUBLE_EDGES:
|
|
v->dqsbedge = get_bits(gb, 2);
|
|
break;
|
|
case DQPROFILE_ALL_MBS:
|
|
v->dqbilevel = get_bits(gb, 1);
|
|
default: break; //Forbidden ?
|
|
}
|
|
if (!v->dqbilevel || v->dqprofile != DQPROFILE_ALL_MBS)
|
|
{
|
|
pqdiff = get_bits(gb, 3);
|
|
if (pqdiff == 7) v->altpq = get_bits(gb, 5);
|
|
else v->altpq = v->pq + pqdiff + 1;
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/***********************************************************************/
|
|
/**
|
|
* @defgroup all_frame_hdr All VC9 profiles frame header
|
|
* @brief Part of the frame header decoding from all profiles
|
|
* @warning Only pro/epilog differs between Simple/Main and Advanced => check caller
|
|
* @{
|
|
*/
|
|
/** B and BI frame header decoding, primary part
|
|
* @see Tables 11+12, p62-65
|
|
* @param v VC9 context
|
|
* @return Status
|
|
* @warning Also handles BI frames
|
|
*/
|
|
static int decode_b_picture_primary_header(VC9Context *v)
|
|
{
|
|
GetBitContext *gb = &v->s.gb;
|
|
int pqindex;
|
|
|
|
/* Prolog common to all frametypes should be done in caller */
|
|
if (v->profile == PROFILE_SIMPLE)
|
|
{
|
|
av_log(v->s.avctx, AV_LOG_ERROR, "Found a B frame while in Simple Profile!\n");
|
|
return FRAME_SKIPPED;
|
|
}
|
|
v->bfraction = vc9_bfraction_lut[get_vlc2(gb, vc9_bfraction_vlc.table,
|
|
VC9_BFRACTION_VLC_BITS, 2)];
|
|
if (v->bfraction < -1)
|
|
{
|
|
av_log(v->s.avctx, AV_LOG_ERROR, "Invalid BFRaction\n");
|
|
return FRAME_SKIPPED;
|
|
}
|
|
else if (!v->bfraction)
|
|
{
|
|
/* We actually have a BI frame */
|
|
v->s.pict_type = BI_TYPE;
|
|
v->buffer_fullness = get_bits(gb, 7);
|
|
}
|
|
|
|
/* Read the quantization stuff */
|
|
pqindex = get_bits(gb, 5);
|
|
if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
|
|
v->pq = pquant_table[0][pqindex];
|
|
else
|
|
{
|
|
v->pq = pquant_table[v->quantizer_mode-1][pqindex];
|
|
}
|
|
if (pqindex < 9) v->halfpq = get_bits(gb, 1);
|
|
if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
|
|
v->pquantizer = get_bits(gb, 1);
|
|
#if HAS_ADVANCED_PROFILE
|
|
if (v->profile == PROFILE_ADVANCED)
|
|
{
|
|
if (v->postprocflag) v->postproc = get_bits(gb, 2);
|
|
if (v->extended_mv == 1 && v->s.pict_type != BI_TYPE)
|
|
v->mvrange = get_prefix(gb, 0, 3);
|
|
}
|
|
#endif
|
|
else
|
|
{
|
|
if (v->extended_mv == 1)
|
|
v->mvrange = get_prefix(gb, 0, 3);
|
|
}
|
|
/* Read the MV mode */
|
|
if (v->s.pict_type != BI_TYPE)
|
|
{
|
|
v->mv_mode = get_bits(gb, 1);
|
|
if (v->pq < 13)
|
|
{
|
|
if (!v->mv_mode)
|
|
{
|
|
v->mv_mode = get_bits(gb, 2);
|
|
if (v->mv_mode)
|
|
av_log(v->s.avctx, AV_LOG_ERROR,
|
|
"mv_mode for lowquant B frame was %i\n", v->mv_mode);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (!v->mv_mode)
|
|
{
|
|
if (get_bits(gb, 1))
|
|
av_log(v->s.avctx, AV_LOG_ERROR,
|
|
"mv_mode for highquant B frame was %i\n", v->mv_mode);
|
|
}
|
|
v->mv_mode = 1-v->mv_mode; //To match (pq < 13) mapping
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/** B and BI frame header decoding, secondary part
|
|
* @see Tables 11+12, p62-65
|
|
* @param v VC9 context
|
|
* @return Status
|
|
* @warning Also handles BI frames
|
|
* @warning To call once all MB arrays are allocated
|
|
* @todo Support Advanced Profile headers
|
|
*/
|
|
static int decode_b_picture_secondary_header(VC9Context *v)
|
|
{
|
|
GetBitContext *gb = &v->s.gb;
|
|
int status;
|
|
|
|
status = bitplane_decoding(&v->skip_mb_plane, v);
|
|
if (status < 0) return -1;
|
|
#if TRACE
|
|
if (v->mv_mode == MV_PMODE_MIXED_MV)
|
|
{
|
|
status = bitplane_decoding(&v->mv_type_mb_plane, v);
|
|
if (status < 0)
|
|
return -1;
|
|
#if TRACE
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
#endif
|
|
}
|
|
|
|
//bitplane
|
|
status = bitplane_decoding(&v->direct_mb_plane, v);
|
|
if (status < 0) return -1;
|
|
#if TRACE
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
#endif
|
|
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "Skip MB plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
#endif
|
|
|
|
/* FIXME: what is actually chosen for B frames ? */
|
|
v->s.mv_table_index = get_bits(gb, 2); //but using vc9_ tables
|
|
v->cbpcy_vlc = &vc9_cbpcy_p_vlc[get_bits(gb, 2)];
|
|
|
|
if (v->dquant)
|
|
{
|
|
vop_dquant_decoding(v);
|
|
}
|
|
|
|
if (v->vstransform)
|
|
{
|
|
v->ttmbf = get_bits(gb, 1);
|
|
if (v->ttmbf)
|
|
{
|
|
v->ttfrm = get_bits(gb, 2);
|
|
av_log(v->s.avctx, AV_LOG_INFO, "Transform used: %ix%i\n",
|
|
(v->ttfrm & 2) ? 4 : 8, (v->ttfrm & 1) ? 4 : 8);
|
|
}
|
|
}
|
|
/* Epilog (AC/DC syntax) should be done in caller */
|
|
return 0;
|
|
}
|
|
|
|
/** I frame header decoding, primary part
|
|
* @see Tables 5+7, p53-54 and 55-57
|
|
* @param v VC9 context
|
|
* @return Status
|
|
* @todo Support Advanced Profile headers
|
|
*/
|
|
static int decode_i_picture_primary_header(VC9Context *v)
|
|
{
|
|
GetBitContext *gb = &v->s.gb;
|
|
int pqindex;
|
|
|
|
/* Prolog common to all frametypes should be done in caller */
|
|
//BF = Buffer Fullness
|
|
if (v->profile < PROFILE_ADVANCED && get_bits(gb, 7))
|
|
{
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "I BufferFullness not 0\n");
|
|
}
|
|
|
|
/* Quantizer stuff */
|
|
pqindex = get_bits(gb, 5);
|
|
if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
|
|
v->pq = pquant_table[0][pqindex];
|
|
else
|
|
{
|
|
v->pq = pquant_table[v->quantizer_mode-1][pqindex];
|
|
}
|
|
if (pqindex < 9) v->halfpq = get_bits(gb, 1);
|
|
if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
|
|
v->pquantizer = get_bits(gb, 1);
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "I frame: QP=%i (+%i/2)\n",
|
|
v->pq, v->halfpq);
|
|
return 0;
|
|
}
|
|
|
|
/** I frame header decoding, secondary part
|
|
* @param v VC9 context
|
|
* @return Status
|
|
* @warning Not called in A/S/C profiles, it seems
|
|
* @todo Support Advanced Profile headers
|
|
*/
|
|
static int decode_i_picture_secondary_header(VC9Context *v)
|
|
{
|
|
#if HAS_ADVANCED_PROFILE
|
|
int status;
|
|
if (v->profile == PROFILE_ADVANCED)
|
|
{
|
|
v->s.ac_pred = get_bits(&v->s.gb, 1);
|
|
if (v->postprocflag) v->postproc = get_bits(&v->s.gb, 1);
|
|
/* 7.1.1.34 + 8.5.2 */
|
|
if (v->overlap && v->pq<9)
|
|
{
|
|
v->condover = get_bits(&v->s.gb, 1);
|
|
if (v->condover)
|
|
{
|
|
v->condover = 2+get_bits(&v->s.gb, 1);
|
|
if (v->condover == 3)
|
|
{
|
|
status = bitplane_decoding(&v->over_flags_plane, v);
|
|
if (status < 0) return -1;
|
|
# if TRACE
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "Overflags plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
# endif
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* Epilog (AC/DC syntax) should be done in caller */
|
|
return 0;
|
|
}
|
|
|
|
/** P frame header decoding, primary part
|
|
* @see Tables 5+7, p53-54 and 55-57
|
|
* @param v VC9 context
|
|
* @todo Support Advanced Profile headers
|
|
* @return Status
|
|
*/
|
|
static int decode_p_picture_primary_header(VC9Context *v)
|
|
{
|
|
/* INTERFRM, FRMCNT, RANGEREDFRM read in caller */
|
|
GetBitContext *gb = &v->s.gb;
|
|
int lowquant, pqindex;
|
|
|
|
pqindex = get_bits(gb, 5);
|
|
if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
|
|
v->pq = pquant_table[0][pqindex];
|
|
else
|
|
{
|
|
v->pq = pquant_table[v->quantizer_mode-1][pqindex];
|
|
}
|
|
if (pqindex < 9) v->halfpq = get_bits(gb, 1);
|
|
if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
|
|
v->pquantizer = get_bits(gb, 1);
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "P Frame: QP=%i (+%i/2)\n",
|
|
v->pq, v->halfpq);
|
|
if (v->extended_mv == 1) v->mvrange = get_prefix(gb, 0, 3);
|
|
#if HAS_ADVANCED_PROFILE
|
|
if (v->profile == PROFILE_ADVANCED)
|
|
{
|
|
if (v->postprocflag) v->postproc = get_bits(gb, 1);
|
|
}
|
|
else
|
|
#endif
|
|
if (v->multires) v->respic = get_bits(gb, 2);
|
|
lowquant = (v->pquantizer>12) ? 0 : 1;
|
|
v->mv_mode = mv_pmode_table[lowquant][get_prefix(gb, 1, 4)];
|
|
if (v->mv_mode == MV_PMODE_INTENSITY_COMP)
|
|
{
|
|
v->mv_mode2 = mv_pmode_table[lowquant][get_prefix(gb, 1, 3)];
|
|
v->lumscale = get_bits(gb, 6);
|
|
v->lumshift = get_bits(gb, 6);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/** P frame header decoding, secondary part
|
|
* @see Tables 5+7, p53-54 and 55-57
|
|
* @param v VC9 context
|
|
* @warning To call once all MB arrays are allocated
|
|
* @return Status
|
|
*/
|
|
static int decode_p_picture_secondary_header(VC9Context *v)
|
|
{
|
|
GetBitContext *gb = &v->s.gb;
|
|
int status = 0;
|
|
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);
|
|
if (status < 0) return -1;
|
|
#if TRACE
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
#endif
|
|
}
|
|
|
|
status = bitplane_decoding(&v->skip_mb_plane, v);
|
|
if (status < 0) return -1;
|
|
#if TRACE
|
|
av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
|
|
"Imode: %i, Invert: %i\n", status>>1, status&1);
|
|
#endif
|
|
|
|
/* Hopefully this is correct for P frames */
|
|
v->s.mv_table_index =get_bits(gb, 2); //but using vc9_ tables
|
|
v->cbpcy_vlc = &vc9_cbpcy_p_vlc[get_bits(gb, 2)];
|
|
|
|
if (v->dquant)
|
|
{
|
|
av_log(v->s.avctx, AV_LOG_INFO, "VOP DQuant info\n");
|
|
vop_dquant_decoding(v);
|
|
}
|
|
|
|
v->ttfrm = 0; //FIXME Is that so ?
|
|
if (v->vstransform)
|
|
{
|
|
v->ttmbf = get_bits(gb, 1);
|
|
if (v->ttmbf)
|
|
{
|
|
v->ttfrm = get_bits(gb, 2);
|
|
av_log(v->s.avctx, AV_LOG_INFO, "Transform used: %ix%i\n",
|
|
(v->ttfrm & 2) ? 4 : 8, (v->ttfrm & 1) ? 4 : 8);
|
|
}
|
|
}
|
|
/* Epilog (AC/DC syntax) should be done in caller */
|
|
return 0;
|
|
}
|
|
/** @} */ //End of group all_frm_hdr
|
|
|
|
|
|
/***********************************************************************/
|
|
/**
|
|
* @defgroup std_frame_hdr VC9 Simple/Main Profiles header decoding
|
|
* @brief Part of the frame header decoding belonging to Simple/Main Profiles
|
|
* @warning Only pro/epilog differs between Simple/Main and Advanced =>
|
|
* check caller
|
|
* @{
|
|
*/
|
|
|
|
/** Frame header decoding, first part, in Simple and Main profiles
|
|
* @see Tables 5+7, p53-54 and 55-57
|
|
* @param v VC9 context
|
|
* @todo FIXME: RANGEREDFRM element not read if BI frame from Table6, P54
|
|
* However, 7.1.1.8 says "all frame types, for main profiles"
|
|
* @return Status
|
|
*/
|
|
static int standard_decode_picture_primary_header(VC9Context *v)
|
|
{
|
|
GetBitContext *gb = &v->s.gb;
|
|
int status = 0;
|
|
|
|
if (v->finterpflag) v->interpfrm = get_bits(gb, 1);
|
|
skip_bits(gb, 2); //framecnt unused
|
|
if (v->rangered) v->rangeredfrm = get_bits(gb, 1);
|
|
v->s.pict_type = get_bits(gb, 1);
|
|
if (v->s.avctx->max_b_frames)
|
|
{
|
|
if (!v->s.pict_type)
|
|
{
|
|
if (get_bits(gb, 1)) v->s.pict_type = I_TYPE;
|
|
else v->s.pict_type = B_TYPE;
|
|
}
|
|
else v->s.pict_type = P_TYPE;
|
|
}
|
|
else v->s.pict_type++;
|
|
|
|
switch (v->s.pict_type)
|
|
{
|
|
case I_TYPE: status = decode_i_picture_primary_header(v); break;
|
|
case P_TYPE: status = decode_p_picture_primary_header(v); break;
|
|
case BI_TYPE: //Same as B
|
|
case B_TYPE: status = decode_b_picture_primary_header(v); break;
|
|
}
|
|
|
|
if (status == FRAME_SKIPPED)
|
|
{
|
|
av_log(v->s.avctx, AV_LOG_INFO, "Skipping frame...\n");
|
|
return status;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/** Frame header decoding, secondary part
|
|
* @param v VC9 context
|
|
* @warning To call once all MB arrays are allocated
|
|
* @return Status
|
|
*/
|
|
static int standard_decode_picture_secondary_header(VC9Context *v)
|
|
{
|
|
GetBitContext *gb = &v->s.gb;
|
|
int status = 0;
|
|
|
|
switch (v->s.pict_type)
|
|
{
|
|
case P_TYPE: status = decode_p_picture_secondary_header(v); break;
|
|
case B_TYPE: status = decode_b_picture_secondary_header(v); break;
|
|
case BI_TYPE:
|
|
case I_TYPE: break; //Nothing needed as it's done in the epilog
|
|
}
|
|
if (status < 0) return FRAME_SKIPPED;
|
|
|
|
/* AC Syntax */
|
|
v->c_ac_table_index = decode012(gb);
|
|
if (v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
|
|
{
|
|
v->y_ac_table_index = decode012(gb);
|
|
}
|
|
/* DC Syntax */
|
|
v->s.dc_table_index = decode012(gb);
|
|
|
|
return 0;
|
|
}
|
|
/** @} */ //End for group std_frame_hdr
|
|
|
|
#if HAS_ADVANCED_PROFILE
|
|
/***********************************************************************/
|
|
/**
|
|
* @defgroup adv_frame_hdr VC9 Advanced Profile header decoding
|
|
* @brief Part of the frame header decoding belonging to Advanced Profiles
|
|
* @warning Only pro/epilog differs between Simple/Main and Advanced =>
|
|
* check caller
|
|
* @{
|
|
*/
|
|
/** Frame header decoding, primary part
|
|
* @param v VC9 context
|
|
* @return Status
|
|
*/
|
|
static int advanced_decode_picture_primary_header(VC9Context *v)
|
|
{
|
|
GetBitContext *gb = &v->s.gb;
|
|
static const int type_table[4] = { P_TYPE, B_TYPE, I_TYPE, BI_TYPE };
|
|
int type;
|
|
|
|
if (v->interlace)
|
|
{
|
|
v->fcm = get_bits(gb, 1);
|
|
if (v->fcm) v->fcm = 2+get_bits(gb, 1);
|
|
}
|
|
|
|
type = get_prefix(gb, 0, 4);
|
|
if (type > 4 || type < 0) return FRAME_SKIPPED;
|
|
v->s.pict_type = type_table[type];
|
|
av_log(v->s.avctx, AV_LOG_INFO, "AP Frame Type: %i\n", v->s.pict_type);
|
|
|
|
if (v->tfcntrflag) v->tfcntr = get_bits(gb, 8);
|
|
if (v->broadcast)
|
|
{
|
|
if (!v->interlace) v->rptfrm = get_bits(gb, 2);
|
|
else
|
|
{
|
|
v->tff = get_bits(gb, 1);
|
|
v->rff = get_bits(gb, 1);
|
|
}
|
|
}
|
|
|
|
if (v->panscanflag)
|
|
{
|
|
#if 0
|
|
for (i=0; i<v->numpanscanwin; i++)
|
|
{
|
|
v->topleftx[i] = get_bits(gb, 16);
|
|
v->toplefty[i] = get_bits(gb, 16);
|
|
v->bottomrightx[i] = get_bits(gb, 16);
|
|
v->bottomrighty[i] = get_bits(gb, 16);
|
|
}
|
|
#else
|
|
skip_bits(gb, 16*4*v->numpanscanwin);
|
|
#endif
|
|
}
|
|
v->s.no_rounding = !get_bits(gb, 1);
|
|
v->uvsamp = get_bits(gb, 1);
|
|
if (v->finterpflag == 1) v->interpfrm = get_bits(gb, 1);
|
|
|
|
switch(v->s.pict_type)
|
|
{
|
|
case I_TYPE: if (decode_i_picture_primary_header(v) < 0) return -1;
|
|
case P_TYPE: if (decode_p_picture_primary_header(v) < 0) return -1;
|
|
case BI_TYPE:
|
|
case B_TYPE: if (decode_b_picture_primary_header(v) < 0) return FRAME_SKIPPED;
|
|
default: return -1;
|
|
}
|
|
}
|
|
|
|
/** Frame header decoding, secondary part
|
|
* @param v VC9 context
|
|
* @return Status
|
|
*/
|
|
static int advanced_decode_picture_secondary_header(VC9Context *v)
|
|
{
|
|
GetBitContext *gb = &v->s.gb;
|
|
int status = 0;
|
|
|
|
switch(v->s.pict_type)
|
|
{
|
|
case P_TYPE: status = decode_p_picture_secondary_header(v); break;
|
|
case B_TYPE: status = decode_b_picture_secondary_header(v); break;
|
|
case BI_TYPE:
|
|
case I_TYPE: status = decode_i_picture_secondary_header(v); break;
|
|
}
|
|
if (status<0) return FRAME_SKIPPED;
|
|
|
|
/* AC Syntax */
|
|
v->c_ac_table_index = decode012(gb);
|
|
if (v->s.pict_type == I_TYPE || v->s.pict_type == BI_TYPE)
|
|
{
|
|
v->y_ac_table_index = decode012(gb);
|
|
}
|
|
/* DC Syntax */
|
|
v->s.dc_table_index = decode012(gb);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
/** @} */ //End for adv_frame_hdr
|
|
|
|
/***********************************************************************/
|
|
/**
|
|
* @defgroup block VC9 Block-level functions
|
|
* @see 7.1.4, p91 and 8.1.1.7, p(1)04
|
|
* @todo TODO: Integrate to MpegEncContext facilities
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @def GET_MQUANT
|
|
* @brief Get macroblock-level quantizer scale
|
|
* @warning XXX: qdiff to the frame quant, not previous quant ?
|
|
* @fixme XXX: Don't know how to initialize mquant otherwise in last case
|
|
*/
|
|
#define GET_MQUANT() \
|
|
if (v->dquantfrm) \
|
|
{ \
|
|
if (v->dqprofile == DQPROFILE_ALL_MBS) \
|
|
{ \
|
|
if (v->dqbilevel) \
|
|
{ \
|
|
mquant = (get_bits(gb, 1)) ? v->pq : v->altpq; \
|
|
} \
|
|
else \
|
|
{ \
|
|
mqdiff = get_bits(gb, 3); \
|
|
if (mqdiff != 7) mquant = v->pq + mqdiff; \
|
|
else mquant = get_bits(gb, 5); \
|
|
} \
|
|
} \
|
|
else mquant = v->pq; \
|
|
}
|
|
|
|
/**
|
|
* @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
|
|
* @todo TODO: Use MpegEncContext arrays to store them
|
|
*/
|
|
#define GET_MVDATA(_dmv_x, _dmv_y) \
|
|
index = 1 + get_vlc2(gb, vc9_mv_diff_vlc[s->mv_table_index].table,\
|
|
VC9_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); \
|
|
_dmv_y = get_bits(gb, v->k_y); \
|
|
s->mb_intra = 1; \
|
|
} \
|
|
else \
|
|
{ \
|
|
index1 = index%6; \
|
|
if (s->mspel && index1 == 5) val = 1; \
|
|
else val = 0; \
|
|
val = get_bits(gb, size_table[index1] - val); \
|
|
sign = 0 - (val&1); \
|
|
_dmv_x = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
|
|
\
|
|
index1 = index/6; \
|
|
if (s->mspel && index1 == 5) val = 1; \
|
|
else val = 0; \
|
|
val = get_bits(gb, size_table[index1] - val); \
|
|
sign = 0 - (val&1); \
|
|
_dmv_y = (sign ^ ((val>>1) + offset_table[index1])) - sign; \
|
|
}
|
|
|
|
/** Get predicted DC value
|
|
* prediction dir: left=0, top=1
|
|
* @param s MpegEncContext
|
|
* @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
|
|
* @todo TODO: Actually do it the VC9 way
|
|
* @todo TODO: Handle properly edges
|
|
*/
|
|
static inline int vc9_pred_dc(MpegEncContext *s, int n,
|
|
uint16_t **dc_val_ptr, int *dir_ptr)
|
|
{
|
|
int a, b, c, wrap, pred, scale;
|
|
int16_t *dc_val;
|
|
static const uint16_t dcpred[31] = {
|
|
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 C
|
|
* A X
|
|
*/
|
|
a = dc_val[ - 1];
|
|
b = dc_val[ - 1 - wrap];
|
|
c = dc_val[ - wrap];
|
|
|
|
/* XXX: Rule B is used only for I and BI frames in S/M/C profile
|
|
* with overlap filtering off
|
|
*/
|
|
if ((s->pict_type == I_TYPE || s->pict_type == BI_TYPE) &&
|
|
1 /* XXX: overlap filtering off */)
|
|
{
|
|
/* Set outer values */
|
|
if (s->first_slice_line && n!=2) b=c=dcpred[scale];
|
|
if (s->mb_x == 0) b=a=dcpred[scale];
|
|
}
|
|
else
|
|
{
|
|
/* Set outer values */
|
|
if (s->first_slice_line && n!=2) b=c=0;
|
|
if (s->mb_x == 0) b=a=0;
|
|
|
|
/* XXX: Rule A needs to know if blocks are inter or intra :/ */
|
|
if (0)
|
|
{
|
|
/* update predictor */
|
|
*dc_val_ptr = &dc_val[0];
|
|
dir_ptr = 0;
|
|
return a;
|
|
}
|
|
}
|
|
|
|
if (abs(a - b) <= abs(b - c)) {
|
|
pred = c;
|
|
*dir_ptr = 1;
|
|
} else {
|
|
pred = a;
|
|
*dir_ptr = 0;
|
|
}
|
|
|
|
/* update predictor */
|
|
*dc_val_ptr = &dc_val[0];
|
|
return pred;
|
|
}
|
|
|
|
/** Decode one block, inter or intra
|
|
* @param v The VC9 context
|
|
* @param block 8x8 DCT block
|
|
* @param n Block index in the current MB (<4=>luma)
|
|
* @param coded If the block is coded
|
|
* @param mquant Quantizer step for the current block
|
|
* @see Inter TT: Table 21, p73 + p91-85
|
|
* @see Intra TT: Table 20, p72 + p(1)05-(1)07
|
|
* @todo TODO: Process the blocks
|
|
* @todo TODO: Use M$ MPEG-4 cbp prediction
|
|
*/
|
|
int vc9_decode_block(VC9Context *v, DCTELEM block[64], int n, int coded, int mquant)
|
|
{
|
|
GetBitContext *gb = &v->s.gb;
|
|
MpegEncContext *s = &v->s;
|
|
int ttblk; /* Transform Type per Block */
|
|
int subblkpat; /* Sub-block Transform Type Pattern */
|
|
int dc_pred_dir; /* Direction of the DC prediction used */
|
|
int run_diff, i;
|
|
|
|
/* 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];
|
|
|
|
if (s->mb_intra)
|
|
{
|
|
int dcdiff;
|
|
uint16_t *dc_val;
|
|
|
|
/* 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_bits(gb, 1) - 1;
|
|
}
|
|
if (get_bits(gb, 1))
|
|
dcdiff = -dcdiff;
|
|
}
|
|
|
|
/* Prediction */
|
|
dcdiff += vc9_pred_dc(s, 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;
|
|
}
|
|
if (block[0] < 0) {
|
|
#if TRACE
|
|
//av_log(s->avctx, AV_LOG_ERROR, "DC=%i<0\n", dcdiff);
|
|
#endif
|
|
//return -1;
|
|
}
|
|
/* Skip ? */
|
|
run_diff = 0;
|
|
i = 0;
|
|
if (!coded) {
|
|
goto not_coded;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
mquant = v->pq;
|
|
|
|
/* Get TTBLK */
|
|
if (v->ttmb < 8) /* per block */
|
|
ttblk = get_vlc2(gb, vc9_ttblk_vlc[v->tt_index].table, VC9_TTBLK_VLC_BITS, 2);
|
|
else /* Per frame */
|
|
ttblk = 0; //FIXME, depends on ttfrm
|
|
|
|
/* Get SUBBLKPAT */
|
|
if (ttblk == v->ttblk4x4) /* 4x4 transform for that qp value */
|
|
subblkpat = 1+get_vlc2(gb, vc9_subblkpat_vlc[v->tt_index].table,
|
|
VC9_SUBBLKPAT_VLC_BITS, 2);
|
|
else /* All others: 8x8, 4x8, 8x4 */
|
|
subblkpat = decode012(gb);
|
|
}
|
|
|
|
//TODO AC Decoding
|
|
i = 63; //XXX: nothing done yet
|
|
|
|
|
|
not_coded:
|
|
if (s->mb_intra) {
|
|
mpeg4_pred_ac(s, block, n, dc_pred_dir);
|
|
if (s->ac_pred) {
|
|
i = 63; /* XXX: not optimal */
|
|
}
|
|
}
|
|
if(i>0) i=63; //FIXME/XXX optimize
|
|
s->block_last_index[n] = i;
|
|
return 0;
|
|
}
|
|
|
|
/** @} */ //End for group block
|
|
|
|
/***********************************************************************/
|
|
/**
|
|
* @defgroup std_mb VC9 Macroblock-level functions in Simple/Main Profiles
|
|
* @see 7.1.4, p91 and 8.1.1.7, p(1)04
|
|
* @todo TODO: Integrate to MpegEncContext facilities
|
|
* @{
|
|
*/
|
|
|
|
static inline int vc9_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 I-frame MB (in Simple/Main profile)
|
|
* @todo TODO: Extend to AP
|
|
*/
|
|
int vc9_decode_i_mb(VC9Context *v, DCTELEM block[6][64])
|
|
{
|
|
int i, cbp, val;
|
|
uint8_t *coded_val;
|
|
// uint32_t * const mb_type_ptr= &v->s.current_picture.mb_type[ v->s.mb_x + v->s.mb_y*v->s.mb_stride ];
|
|
|
|
v->s.mb_intra = 1;
|
|
cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
|
|
if (cbp < 0) return -1;
|
|
v->s.ac_pred = get_bits(&v->s.gb, 1);
|
|
|
|
for (i=0; i<6; i++)
|
|
{
|
|
val = ((cbp >> (5 - i)) & 1);
|
|
if (i < 4) {
|
|
int pred = vc9_coded_block_pred(&v->s, i, &coded_val);
|
|
val = val ^ pred;
|
|
*coded_val = val;
|
|
}
|
|
cbp |= val << (5 - i);
|
|
if (vc9_decode_block(v, block[i], i, val, v->pq) < 0) //FIXME Should be mquant
|
|
{
|
|
av_log(v->s.avctx, AV_LOG_ERROR,
|
|
"\nerror while decoding block: %d x %d (%d)\n", v->s.mb_x, v->s.mb_y, i);
|
|
return -1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/** Decode one P-frame MB (in Simple/Main profile)
|
|
* @todo TODO: Extend to AP
|
|
* @fixme FIXME: DC value for inter blocks not set
|
|
*/
|
|
int vc9_decode_p_mb(VC9Context *v, DCTELEM block[6][64])
|
|
{
|
|
MpegEncContext *s = &v->s;
|
|
GetBitContext *gb = &s->gb;
|
|
int i, mb_offset = s->mb_x + s->mb_y*s->mb_width; /* XXX: mb_stride */
|
|
int cbp; /* cbp decoding stuff */
|
|
int hybrid_pred; /* Prediction types */
|
|
int mv_mode_bit = 0;
|
|
int mqdiff, mquant; /* MB quantization */
|
|
int ttmb; /* MB Transform type */
|
|
int status;
|
|
uint8_t *coded_val;
|
|
|
|
static const int size_table[6] = { 0, 2, 3, 4, 5, 8 },
|
|
offset_table[6] = { 0, 1, 3, 7, 15, 31 };
|
|
int mb_has_coeffs = 1; /* last_flag */
|
|
int dmv_x, dmv_y; /* Differential MV components */
|
|
int index, index1; /* LUT indices */
|
|
int val, sign; /* temp values */
|
|
|
|
mquant = v->pq; /* Loosy initialization */
|
|
|
|
if (v->mv_type_mb_plane.is_raw)
|
|
v->mv_type_mb_plane.data[mb_offset] = get_bits(gb, 1);
|
|
if (v->skip_mb_plane.is_raw)
|
|
v->skip_mb_plane.data[mb_offset] = get_bits(gb, 1);
|
|
if (!mv_mode_bit) /* 1MV mode */
|
|
{
|
|
if (!v->skip_mb_plane.data[mb_offset])
|
|
{
|
|
GET_MVDATA(dmv_x, dmv_y);
|
|
|
|
/* hybrid mv pred, 8.3.5.3.4 */
|
|
if (v->mv_mode == MV_PMODE_1MV ||
|
|
v->mv_mode == MV_PMODE_MIXED_MV)
|
|
hybrid_pred = get_bits(gb, 1);
|
|
/* FIXME Set DC val for inter block ? */
|
|
if (s->mb_intra && !mb_has_coeffs)
|
|
{
|
|
GET_MQUANT();
|
|
s->ac_pred = get_bits(gb, 1);
|
|
/* XXX: how to handle cbp ? */
|
|
cbp = 0;
|
|
for (i=0; i<6; i++)
|
|
{
|
|
s->coded_block[s->block_index[i]] = 0;
|
|
vc9_decode_block(v, block[i], i, 0, mquant);
|
|
}
|
|
return 0;
|
|
}
|
|
else if (mb_has_coeffs)
|
|
{
|
|
if (s->mb_intra) s->ac_pred = get_bits(gb, 1);
|
|
cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC9_CBPCY_P_VLC_BITS, 2);
|
|
GET_MQUANT();
|
|
}
|
|
else
|
|
{
|
|
mquant = v->pq;
|
|
/* XXX: how to handle cbp ? */
|
|
/* XXX: how to set values for following predictions ? */
|
|
cbp = 0;
|
|
}
|
|
|
|
if (!v->ttmbf)
|
|
ttmb = get_vlc2(gb, vc9_ttmb_vlc[v->tt_index].table,
|
|
VC9_TTMB_VLC_BITS, 12);
|
|
|
|
for (i=0; i<6; i++)
|
|
{
|
|
val = ((cbp >> (5 - i)) & 1);
|
|
if (i < 4) {
|
|
int pred = vc9_coded_block_pred(&v->s, i, &coded_val);
|
|
val = val ^ pred;
|
|
*coded_val = val;
|
|
}
|
|
vc9_decode_block(v, block[i], i, val, mquant); //FIXME
|
|
}
|
|
}
|
|
else //Skipped
|
|
{
|
|
/* hybrid mv pred, 8.3.5.3.4 */
|
|
if (v->mv_mode == MV_PMODE_1MV ||
|
|
v->mv_mode == MV_PMODE_MIXED_MV)
|
|
hybrid_pred = get_bits(gb, 1);
|
|
|
|
/* TODO: blah */
|
|
return 0;
|
|
}
|
|
} //1MV mode
|
|
else //4MV mode
|
|
{
|
|
if (!v->skip_mb_plane.data[mb_offset] /* unskipped MB */)
|
|
{
|
|
/* Get CBPCY */
|
|
cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC9_CBPCY_P_VLC_BITS, 2);
|
|
for (i=0; i<6; i++)
|
|
{
|
|
val = ((cbp >> (5 - i)) & 1);
|
|
if (i < 4) {
|
|
int pred = vc9_coded_block_pred(&v->s, i, &coded_val);
|
|
val = val ^ pred;
|
|
*coded_val = val;
|
|
}
|
|
if (i<4 && val)
|
|
{
|
|
GET_MVDATA(dmv_x, dmv_y);
|
|
}
|
|
if (v->mv_mode == MV_PMODE_MIXED_MV /* Hybrid pred */)
|
|
hybrid_pred = get_bits(gb, 1);
|
|
GET_MQUANT();
|
|
|
|
if (s->mb_intra /* One of the 4 blocks is intra */ &&
|
|
index /* non-zero pred for that block */)
|
|
s->ac_pred = get_bits(gb, 1);
|
|
if (!v->ttmbf)
|
|
ttmb = get_vlc2(gb, vc9_ttmb_vlc[v->tt_index].table,
|
|
VC9_TTMB_VLC_BITS, 12);
|
|
status = vc9_decode_block(v, block[i], i, val, mquant);
|
|
}
|
|
return status;
|
|
}
|
|
else //Skipped MB
|
|
{
|
|
/* XXX: Skipped => cbp=0 and mquant doesn't matter ? */
|
|
for (i=0; i<4; i++)
|
|
{
|
|
if (v->mv_mode == MV_PMODE_MIXED_MV /* Hybrid pred */)
|
|
hybrid_pred = get_bits(gb, 1);
|
|
vc9_decode_block(v, block[i], i, 0, v->pq); //FIXME
|
|
}
|
|
vc9_decode_block(v, block[4], 4, 0, v->pq); //FIXME
|
|
vc9_decode_block(v, block[5], 5, 0, v->pq); //FIXME
|
|
/* TODO: blah */
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* Should never happen */
|
|
return -1;
|
|
}
|
|
|
|
/** Decode one B-frame MB (in Simple/Main profile)
|
|
* @todo TODO: Extend to AP
|
|
* @warning XXX: Used for decoding BI MBs
|
|
* @fixme FIXME: DC value for inter blocks not set
|
|
*/
|
|
int vc9_decode_b_mb(VC9Context *v, DCTELEM block[6][64])
|
|
{
|
|
MpegEncContext *s = &v->s;
|
|
GetBitContext *gb = &v->s.gb;
|
|
int mb_offset, i /* MB / B postion information */;
|
|
int b_mv_type = BMV_TYPE_BACKWARD;
|
|
int mquant, mqdiff; /* MB quant stuff */
|
|
int ttmb; /* MacroBlock transform type */
|
|
|
|
static const int size_table[6] = { 0, 2, 3, 4, 5, 8 },
|
|
offset_table[6] = { 0, 1, 3, 7, 15, 31 };
|
|
int mb_has_coeffs = 1; /* last_flag */
|
|
int dmv1_x, dmv1_y, dmv2_x, dmv2_y; /* Differential MV components */
|
|
int index, index1; /* LUT indices */
|
|
int val, sign; /* MVDATA temp values */
|
|
|
|
mb_offset = s->mb_width*s->mb_y + s->mb_x; //FIXME: arrays aren't using stride
|
|
|
|
if (v->direct_mb_plane.is_raw)
|
|
v->direct_mb_plane.data[mb_offset] = get_bits(gb, 1);
|
|
if (v->skip_mb_plane.is_raw)
|
|
v->skip_mb_plane.data[mb_offset] = get_bits(gb, 1);
|
|
|
|
if (!v->direct_mb_plane.data[mb_offset])
|
|
{
|
|
if (v->skip_mb_plane.data[mb_offset])
|
|
{
|
|
b_mv_type = decode012(gb);
|
|
if (v->bfraction > 420 /*1/2*/ &&
|
|
b_mv_type < 3) b_mv_type = 1-b_mv_type;
|
|
}
|
|
else
|
|
{
|
|
GET_MVDATA(dmv1_x, dmv1_y);
|
|
if (!s->mb_intra /* b_mv1 tells not intra */)
|
|
{
|
|
b_mv_type = decode012(gb);
|
|
if (v->bfraction > 420 /*1/2*/ &&
|
|
b_mv_type < 3) b_mv_type = 1-b_mv_type;
|
|
}
|
|
}
|
|
}
|
|
if (!v->skip_mb_plane.data[mb_offset])
|
|
{
|
|
if (mb_has_coeffs /* BMV1 == "last" */)
|
|
{
|
|
GET_MQUANT();
|
|
if (s->mb_intra /* intra mb */)
|
|
s->ac_pred = get_bits(gb, 1);
|
|
}
|
|
else
|
|
{
|
|
/* if bmv1 tells MVs are interpolated */
|
|
if (b_mv_type == BMV_TYPE_INTERPOLATED)
|
|
{
|
|
GET_MVDATA(dmv2_x, dmv2_y);
|
|
mquant = v->pq; //FIXME: initialization not necessary ?
|
|
}
|
|
/* GET_MVDATA has reset some stuff */
|
|
if (mb_has_coeffs /* b_mv2 == "last" */)
|
|
{
|
|
if (s->mb_intra /* intra_mb */)
|
|
s->ac_pred = get_bits(gb, 1);
|
|
GET_MQUANT();
|
|
}
|
|
}
|
|
}
|
|
|
|
//End1
|
|
if (v->ttmbf)
|
|
ttmb = get_vlc2(gb, vc9_ttmb_vlc[v->tt_index].table,
|
|
VC9_TTMB_VLC_BITS, 12);
|
|
|
|
//End2
|
|
for (i=0; i<6; i++)
|
|
{
|
|
vc9_decode_block(v, block[i], i, 0 /*cbp[i]*/, mquant); //FIXME
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/** Decode all MBs for an I frame in Simple/Main profile
|
|
* @todo TODO: Move out of the loop the picture type case?
|
|
(branch prediction should help there though)
|
|
*/
|
|
static int standard_decode_mbs(VC9Context *v)
|
|
{
|
|
MpegEncContext *s = &v->s;
|
|
|
|
/* Set transform type info depending on pq */
|
|
if (v->pq < 5)
|
|
{
|
|
v->tt_index = 0;
|
|
v->ttblk4x4 = 3;
|
|
}
|
|
else if (v->pq < 13)
|
|
{
|
|
v->tt_index = 1;
|
|
v->ttblk4x4 = 3;
|
|
}
|
|
else
|
|
{
|
|
v->tt_index = 2;
|
|
v->ttblk4x4 = 2;
|
|
}
|
|
|
|
if (s->pict_type != I_TYPE)
|
|
{
|
|
/* Select proper long MV range */
|
|
switch (v->mvrange)
|
|
{
|
|
case 1: v->k_x = 10; v->k_y = 9; break;
|
|
case 2: v->k_x = 12; v->k_y = 10; break;
|
|
case 3: v->k_x = 13; v->k_y = 11; break;
|
|
default: /*case 0 too */ v->k_x = 9; v->k_y = 8; break;
|
|
}
|
|
|
|
s->mspel = v->mv_mode & 1; //MV_PMODE is HPEL
|
|
v->k_x -= s->mspel;
|
|
v->k_y -= s->mspel;
|
|
}
|
|
|
|
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++)
|
|
{
|
|
//FIXME Get proper MB DCTELEM
|
|
//TODO Move out of the loop
|
|
switch (s->pict_type)
|
|
{
|
|
case I_TYPE: vc9_decode_i_mb(v, s->block); break;
|
|
case P_TYPE: vc9_decode_p_mb(v, s->block); break;
|
|
case BI_TYPE:
|
|
case B_TYPE: vc9_decode_b_mb(v, s->block); break;
|
|
}
|
|
}
|
|
//Add a check for overconsumption ?
|
|
}
|
|
return 0;
|
|
}
|
|
/** @} */ //End for group std_mb
|
|
|
|
#if HAS_ADVANCED_PROFILE
|
|
/***********************************************************************/
|
|
/**
|
|
* @defgroup adv_mb VC9 Macroblock-level functions in Advanced Profile
|
|
* @todo TODO: Integrate to MpegEncContext facilities
|
|
* @todo TODO: Code P, B and BI
|
|
* @{
|
|
*/
|
|
static int advanced_decode_i_mbs(VC9Context *v)
|
|
{
|
|
MpegEncContext *s = &v->s;
|
|
GetBitContext *gb = &v->s.gb;
|
|
int mqdiff, mquant, mb_offset = 0, over_flags_mb = 0;
|
|
|
|
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++)
|
|
{
|
|
if (v->ac_pred_plane.is_raw)
|
|
s->ac_pred = get_bits(gb, 1);
|
|
else
|
|
s->ac_pred = v->ac_pred_plane.data[mb_offset];
|
|
if (v->condover == 3 && v->over_flags_plane.is_raw)
|
|
over_flags_mb = get_bits(gb, 1);
|
|
GET_MQUANT();
|
|
|
|
/* TODO: lots */
|
|
}
|
|
mb_offset++;
|
|
}
|
|
return 0;
|
|
}
|
|
/** @} */ //End for group adv_mb
|
|
#endif
|
|
|
|
/** Initialize a VC9/WMV3 decoder
|
|
* @todo TODO: Handle VC-9 IDUs (Transport level?)
|
|
* @todo TODO: Decypher remaining bits in extra_data
|
|
*/
|
|
static int vc9_decode_init(AVCodecContext *avctx)
|
|
{
|
|
VC9Context *v = avctx->priv_data;
|
|
MpegEncContext *s = &v->s;
|
|
GetBitContext gb;
|
|
|
|
if (!avctx->extradata_size || !avctx->extradata) return -1;
|
|
avctx->pix_fmt = PIX_FMT_YUV420P;
|
|
v->s.avctx = avctx;
|
|
|
|
if(ff_h263_decode_init(avctx) < 0)
|
|
return -1;
|
|
if (vc9_init_common(v) < 0) return -1;
|
|
|
|
av_log(avctx, AV_LOG_INFO, "This decoder is not supposed to produce picture. Dont report this as a bug!\n");
|
|
|
|
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);
|
|
}
|
|
}
|
|
avctx->has_b_frames= !!(avctx->max_b_frames);
|
|
|
|
s->mb_width = (avctx->coded_width+15)>>4;
|
|
s->mb_height = (avctx->coded_height+15)>>4;
|
|
|
|
/* Allocate mb bitplanes */
|
|
if (alloc_bitplane(&v->mv_type_mb_plane, s->mb_width, s->mb_height) < 0)
|
|
return -1;
|
|
if (alloc_bitplane(&v->mv_type_mb_plane, s->mb_width, s->mb_height) < 0)
|
|
return -1;
|
|
if (alloc_bitplane(&v->skip_mb_plane, s->mb_width, s->mb_height) < 0)
|
|
return -1;
|
|
if (alloc_bitplane(&v->direct_mb_plane, s->mb_width, s->mb_height) < 0)
|
|
return -1;
|
|
|
|
/* For predictors */
|
|
v->previous_line_cbpcy = (uint8_t *)av_malloc(s->mb_stride*4);
|
|
if (!v->previous_line_cbpcy) return -1;
|
|
|
|
#if HAS_ADVANCED_PROFILE
|
|
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;
|
|
}
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
/** Decode a VC9/WMV3 frame
|
|
* @todo TODO: Handle VC-9 IDUs (Transport level?)
|
|
* @warning Initial try at using MpegEncContext stuff
|
|
*/
|
|
static int vc9_decode_frame(AVCodecContext *avctx,
|
|
void *data, int *data_size,
|
|
uint8_t *buf, int buf_size)
|
|
{
|
|
VC9Context *v = avctx->priv_data;
|
|
MpegEncContext *s = &v->s;
|
|
int ret = FRAME_SKIPPED, len;
|
|
AVFrame *pict = data;
|
|
uint8_t *tmp_buf;
|
|
v->s.avctx = avctx;
|
|
|
|
//buf_size = 0 -> last frame
|
|
if (!buf_size) return 0;
|
|
|
|
len = avpicture_get_size(avctx->pix_fmt, avctx->width,
|
|
avctx->height);
|
|
tmp_buf = (uint8_t *)av_mallocz(len);
|
|
avpicture_fill((AVPicture *)pict, tmp_buf, avctx->pix_fmt,
|
|
avctx->width, avctx->height);
|
|
|
|
if (avctx->codec_id == CODEC_ID_VC9)
|
|
{
|
|
#if 0
|
|
// search for IDU's
|
|
// FIXME
|
|
uint32_t scp = 0;
|
|
int scs = 0, i = 0;
|
|
|
|
while (i < buf_size)
|
|
{
|
|
for (; i < buf_size && scp != 0x000001; i++)
|
|
scp = ((scp<<8)|buf[i])&0xffffff;
|
|
|
|
if (scp != 0x000001)
|
|
break; // eof ?
|
|
|
|
scs = buf[i++];
|
|
|
|
init_get_bits(gb, buf+i, (buf_size-i)*8);
|
|
|
|
switch(scs)
|
|
{
|
|
case 0x0A: //Sequence End Code
|
|
return 0;
|
|
case 0x0B: //Slice Start Code
|
|
av_log(avctx, AV_LOG_ERROR, "Slice coding not supported\n");
|
|
return -1;
|
|
case 0x0C: //Field start code
|
|
av_log(avctx, AV_LOG_ERROR, "Interlaced coding not supported\n");
|
|
return -1;
|
|
case 0x0D: //Frame start code
|
|
break;
|
|
case 0x0E: //Entry point Start Code
|
|
if (v->profile < PROFILE_ADVANCED)
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Found an entry point in profile %i\n", v->profile);
|
|
advanced_entry_point_process(avctx, gb);
|
|
break;
|
|
case 0x0F: //Sequence header Start Code
|
|
decode_sequence_header(avctx, gb);
|
|
break;
|
|
default:
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Unsupported IDU suffix %lX\n", scs);
|
|
}
|
|
|
|
i += get_bits_count(gb)*8;
|
|
}
|
|
#else
|
|
av_abort();
|
|
#endif
|
|
}
|
|
else
|
|
init_get_bits(&v->s.gb, buf, buf_size*8);
|
|
|
|
s->flags= avctx->flags;
|
|
s->flags2= avctx->flags2;
|
|
|
|
/* 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;
|
|
}
|
|
|
|
//No IDU - we mimic ff_h263_decode_frame
|
|
s->bitstream_buffer_size=0;
|
|
|
|
if (!s->context_initialized) {
|
|
if (MPV_common_init(s) < 0) //we need the idct permutaton for reading a custom matrix
|
|
return -1;
|
|
}
|
|
|
|
//we need to set current_picture_ptr before reading the header, otherwise we cant store anyting im there
|
|
if(s->current_picture_ptr==NULL || s->current_picture_ptr->data[0]){
|
|
s->current_picture_ptr= &s->picture[ff_find_unused_picture(s, 0)];
|
|
}
|
|
#if HAS_ADVANCED_PROFILE
|
|
if (v->profile == PROFILE_ADVANCED)
|
|
ret= advanced_decode_picture_primary_header(v);
|
|
else
|
|
#endif
|
|
ret= standard_decode_picture_primary_header(v);
|
|
if (ret == FRAME_SKIPPED) return buf_size;
|
|
/* skip if the header was thrashed */
|
|
if (ret < 0){
|
|
av_log(s->avctx, AV_LOG_ERROR, "header damaged\n");
|
|
return -1;
|
|
}
|
|
|
|
//No bug workaround yet, no DCT conformance
|
|
|
|
//WMV9 does have resized images
|
|
if (v->profile < PROFILE_ADVANCED && v->multires){
|
|
//Parse context stuff in here, don't know how appliable it is
|
|
}
|
|
//Not sure about context initialization
|
|
|
|
// for hurry_up==5
|
|
s->current_picture.pict_type= s->pict_type;
|
|
s->current_picture.key_frame= s->pict_type == I_TYPE;
|
|
|
|
/* skip b frames if we dont have reference frames */
|
|
if(s->last_picture_ptr==NULL && (s->pict_type==B_TYPE || s->dropable))
|
|
return buf_size; //FIXME simulating all buffer consumed
|
|
/* skip b frames if we are in a hurry */
|
|
if(avctx->hurry_up && s->pict_type==B_TYPE)
|
|
return buf_size; //FIXME simulating all buffer consumed
|
|
/* skip everything if we are in a hurry>=5 */
|
|
if(avctx->hurry_up>=5)
|
|
return buf_size; //FIXME simulating all buffer consumed
|
|
|
|
if(s->next_p_frame_damaged){
|
|
if(s->pict_type==B_TYPE)
|
|
return buf_size; //FIXME simulating all buffer consumed
|
|
else
|
|
s->next_p_frame_damaged=0;
|
|
}
|
|
|
|
if(MPV_frame_start(s, avctx) < 0)
|
|
return -1;
|
|
|
|
ff_er_frame_start(s);
|
|
|
|
//wmv9 may or may not have skip bits
|
|
#if HAS_ADVANCED_PROFILE
|
|
if (v->profile == PROFILE_ADVANCED)
|
|
ret= advanced_decode_picture_secondary_header(v);
|
|
else
|
|
#endif
|
|
ret = standard_decode_picture_secondary_header(v);
|
|
if (ret<0) return FRAME_SKIPPED; //FIXME Non fatal for now
|
|
|
|
//We consider the image coded in only one slice
|
|
#if HAS_ADVANCED_PROFILE
|
|
if (v->profile == PROFILE_ADVANCED)
|
|
{
|
|
switch(s->pict_type)
|
|
{
|
|
case I_TYPE: ret = advanced_decode_i_mbs(v); break;
|
|
case P_TYPE: ret = decode_p_mbs(v); break;
|
|
case B_TYPE:
|
|
case BI_TYPE: ret = decode_b_mbs(v); break;
|
|
default: ret = FRAME_SKIPPED;
|
|
}
|
|
if (ret == FRAME_SKIPPED) return buf_size; //We ignore for now failures
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
ret = standard_decode_mbs(v);
|
|
if (ret == FRAME_SKIPPED) return buf_size;
|
|
}
|
|
|
|
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==B_TYPE || s->low_delay){
|
|
*pict= *(AVFrame*)&s->current_picture;
|
|
ff_print_debug_info(s, pict);
|
|
} else {
|
|
*pict= *(AVFrame*)&s->last_picture;
|
|
if(pict)
|
|
ff_print_debug_info(s, pict);
|
|
}
|
|
|
|
/* Return the Picture timestamp as the frame number */
|
|
/* we substract 1 because it is added on utils.c */
|
|
avctx->frame_number = s->picture_number - 1;
|
|
|
|
/* dont output the last pic after seeking */
|
|
if(s->last_picture_ptr || s->low_delay)
|
|
*data_size = sizeof(AVFrame);
|
|
|
|
av_log(avctx, AV_LOG_DEBUG, "Consumed %i/%i bits\n",
|
|
get_bits_count(&s->gb), buf_size*8);
|
|
|
|
/* Fake consumption of all data */
|
|
*data_size = len;
|
|
return buf_size; //Number of bytes consumed
|
|
}
|
|
|
|
/** Close a VC9/WMV3 decoder
|
|
* @warning Initial try at using MpegEncContext stuff
|
|
*/
|
|
static int vc9_decode_end(AVCodecContext *avctx)
|
|
{
|
|
VC9Context *v = avctx->priv_data;
|
|
|
|
#if HAS_ADVANCED_PROFILE
|
|
av_freep(&v->hrd_rate);
|
|
av_freep(&v->hrd_buffer);
|
|
#endif
|
|
MPV_common_end(&v->s);
|
|
free_bitplane(&v->mv_type_mb_plane);
|
|
free_bitplane(&v->skip_mb_plane);
|
|
free_bitplane(&v->direct_mb_plane);
|
|
return 0;
|
|
}
|
|
|
|
AVCodec vc9_decoder = {
|
|
"vc9",
|
|
CODEC_TYPE_VIDEO,
|
|
CODEC_ID_VC9,
|
|
sizeof(VC9Context),
|
|
vc9_decode_init,
|
|
NULL,
|
|
vc9_decode_end,
|
|
vc9_decode_frame,
|
|
CODEC_CAP_DELAY,
|
|
NULL
|
|
};
|
|
|
|
AVCodec wmv3_decoder = {
|
|
"wmv3",
|
|
CODEC_TYPE_VIDEO,
|
|
CODEC_ID_WMV3,
|
|
sizeof(VC9Context),
|
|
vc9_decode_init,
|
|
NULL,
|
|
vc9_decode_end,
|
|
vc9_decode_frame,
|
|
CODEC_CAP_DELAY,
|
|
NULL
|
|
};
|