976a8b2179
* qatar/master: (40 commits) H.264: template left MB handling H.264: faster fill_decode_caches H.264: faster write_back_* H.264: faster fill_filter_caches H.264: make filter_mb_fast support the case of unavailable top mb Do not include log.h in avutil.h Do not include pixfmt.h in avutil.h Do not include rational.h in avutil.h Do not include mathematics.h in avutil.h Do not include intfloat_readwrite.h in avutil.h Remove return statements following infinite loops without break RTSP: Doxygen comment cleanup doxygen: Escape '\' in Doxygen documentation. md5: cosmetics md5: use AV_WL32 to write result md5: add fate test md5: include correct headers md5: fix test program doxygen: Drop array size declarations from Doxygen parameter names. doxygen: Fix parameter names to match the function prototypes. ... Conflicts: libavcodec/x86/dsputil_mmx.c libavformat/flvenc.c libavformat/oggenc.c libavformat/wtv.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
1133 lines
40 KiB
C
1133 lines
40 KiB
C
/*
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* Copyright (c) 2003 The FFmpeg Project
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* How to use this decoder:
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* SVQ3 data is transported within Apple Quicktime files. Quicktime files
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* have stsd atoms to describe media trak properties. A stsd atom for a
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* video trak contains 1 or more ImageDescription atoms. These atoms begin
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* with the 4-byte length of the atom followed by the codec fourcc. Some
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* decoders need information in this atom to operate correctly. Such
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* is the case with SVQ3. In order to get the best use out of this decoder,
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* the calling app must make the SVQ3 ImageDescription atom available
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* via the AVCodecContext's extradata[_size] field:
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*
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* AVCodecContext.extradata = pointer to ImageDescription, first characters
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* are expected to be 'S', 'V', 'Q', and '3', NOT the 4-byte atom length
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* AVCodecContext.extradata_size = size of ImageDescription atom memory
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* buffer (which will be the same as the ImageDescription atom size field
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* from the QT file, minus 4 bytes since the length is missing)
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*
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* You will know you have these parameters passed correctly when the decoder
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* correctly decodes this file:
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* http://samples.mplayerhq.hu/V-codecs/SVQ3/Vertical400kbit.sorenson3.mov
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*/
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#include "internal.h"
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#include "dsputil.h"
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#include "avcodec.h"
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#include "mpegvideo.h"
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#include "h264.h"
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#include "h264data.h" //FIXME FIXME FIXME
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#include "h264_mvpred.h"
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#include "golomb.h"
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#include "rectangle.h"
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#include "vdpau_internal.h"
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#if CONFIG_ZLIB
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#include <zlib.h>
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#endif
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#include "svq1.h"
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/**
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* @file
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* svq3 decoder.
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*/
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typedef struct {
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H264Context h;
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int halfpel_flag;
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int thirdpel_flag;
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int unknown_flag;
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int next_slice_index;
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uint32_t watermark_key;
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uint8_t *buf;
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int buf_size;
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} SVQ3Context;
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#define FULLPEL_MODE 1
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#define HALFPEL_MODE 2
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#define THIRDPEL_MODE 3
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#define PREDICT_MODE 4
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/* dual scan (from some older h264 draft)
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o-->o-->o o
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| /|
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o o o / o
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| / | |/ |
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o o o o
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/
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o-->o-->o-->o
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*/
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static const uint8_t svq3_scan[16] = {
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0+0*4, 1+0*4, 2+0*4, 2+1*4,
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2+2*4, 3+0*4, 3+1*4, 3+2*4,
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0+1*4, 0+2*4, 1+1*4, 1+2*4,
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0+3*4, 1+3*4, 2+3*4, 3+3*4,
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};
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static const uint8_t svq3_pred_0[25][2] = {
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{ 0, 0 },
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{ 1, 0 }, { 0, 1 },
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{ 0, 2 }, { 1, 1 }, { 2, 0 },
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{ 3, 0 }, { 2, 1 }, { 1, 2 }, { 0, 3 },
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{ 0, 4 }, { 1, 3 }, { 2, 2 }, { 3, 1 }, { 4, 0 },
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{ 4, 1 }, { 3, 2 }, { 2, 3 }, { 1, 4 },
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{ 2, 4 }, { 3, 3 }, { 4, 2 },
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{ 4, 3 }, { 3, 4 },
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{ 4, 4 }
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};
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static const int8_t svq3_pred_1[6][6][5] = {
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{ { 2,-1,-1,-1,-1 }, { 2, 1,-1,-1,-1 }, { 1, 2,-1,-1,-1 },
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{ 2, 1,-1,-1,-1 }, { 1, 2,-1,-1,-1 }, { 1, 2,-1,-1,-1 } },
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{ { 0, 2,-1,-1,-1 }, { 0, 2, 1, 4, 3 }, { 0, 1, 2, 4, 3 },
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{ 0, 2, 1, 4, 3 }, { 2, 0, 1, 3, 4 }, { 0, 4, 2, 1, 3 } },
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{ { 2, 0,-1,-1,-1 }, { 2, 1, 0, 4, 3 }, { 1, 2, 4, 0, 3 },
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{ 2, 1, 0, 4, 3 }, { 2, 1, 4, 3, 0 }, { 1, 2, 4, 0, 3 } },
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{ { 2, 0,-1,-1,-1 }, { 2, 0, 1, 4, 3 }, { 1, 2, 0, 4, 3 },
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{ 2, 1, 0, 4, 3 }, { 2, 1, 3, 4, 0 }, { 2, 4, 1, 0, 3 } },
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{ { 0, 2,-1,-1,-1 }, { 0, 2, 1, 3, 4 }, { 1, 2, 3, 0, 4 },
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{ 2, 0, 1, 3, 4 }, { 2, 1, 3, 0, 4 }, { 2, 0, 4, 3, 1 } },
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{ { 0, 2,-1,-1,-1 }, { 0, 2, 4, 1, 3 }, { 1, 4, 2, 0, 3 },
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{ 4, 2, 0, 1, 3 }, { 2, 0, 1, 4, 3 }, { 4, 2, 1, 0, 3 } },
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};
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static const struct { uint8_t run; uint8_t level; } svq3_dct_tables[2][16] = {
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{ { 0, 0 }, { 0, 1 }, { 1, 1 }, { 2, 1 }, { 0, 2 }, { 3, 1 }, { 4, 1 }, { 5, 1 },
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{ 0, 3 }, { 1, 2 }, { 2, 2 }, { 6, 1 }, { 7, 1 }, { 8, 1 }, { 9, 1 }, { 0, 4 } },
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{ { 0, 0 }, { 0, 1 }, { 1, 1 }, { 0, 2 }, { 2, 1 }, { 0, 3 }, { 0, 4 }, { 0, 5 },
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{ 3, 1 }, { 4, 1 }, { 1, 2 }, { 1, 3 }, { 0, 6 }, { 0, 7 }, { 0, 8 }, { 0, 9 } }
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};
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static const uint32_t svq3_dequant_coeff[32] = {
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3881, 4351, 4890, 5481, 6154, 6914, 7761, 8718,
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9781, 10987, 12339, 13828, 15523, 17435, 19561, 21873,
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24552, 27656, 30847, 34870, 38807, 43747, 49103, 54683,
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61694, 68745, 77615, 89113,100253,109366,126635,141533
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};
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void ff_svq3_luma_dc_dequant_idct_c(DCTELEM *output, DCTELEM *input, int qp){
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const int qmul = svq3_dequant_coeff[qp];
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#define stride 16
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int i;
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int temp[16];
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static const uint8_t x_offset[4]={0, 1*stride, 4*stride, 5*stride};
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for(i=0; i<4; i++){
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const int z0 = 13*(input[4*i+0] + input[4*i+2]);
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const int z1 = 13*(input[4*i+0] - input[4*i+2]);
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const int z2 = 7* input[4*i+1] - 17*input[4*i+3];
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const int z3 = 17* input[4*i+1] + 7*input[4*i+3];
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temp[4*i+0] = z0+z3;
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temp[4*i+1] = z1+z2;
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temp[4*i+2] = z1-z2;
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temp[4*i+3] = z0-z3;
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}
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for(i=0; i<4; i++){
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const int offset= x_offset[i];
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const int z0= 13*(temp[4*0+i] + temp[4*2+i]);
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const int z1= 13*(temp[4*0+i] - temp[4*2+i]);
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const int z2= 7* temp[4*1+i] - 17*temp[4*3+i];
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const int z3= 17* temp[4*1+i] + 7*temp[4*3+i];
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output[stride* 0+offset] = ((z0 + z3)*qmul + 0x80000) >> 20;
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output[stride* 2+offset] = ((z1 + z2)*qmul + 0x80000) >> 20;
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output[stride* 8+offset] = ((z1 - z2)*qmul + 0x80000) >> 20;
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output[stride*10+offset] = ((z0 - z3)*qmul + 0x80000) >> 20;
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}
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}
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#undef stride
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void ff_svq3_add_idct_c(uint8_t *dst, DCTELEM *block, int stride, int qp,
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int dc)
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{
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const int qmul = svq3_dequant_coeff[qp];
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int i;
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uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
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if (dc) {
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dc = 13*13*((dc == 1) ? 1538*block[0] : ((qmul*(block[0] >> 3)) / 2));
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block[0] = 0;
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}
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for (i = 0; i < 4; i++) {
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const int z0 = 13*(block[0 + 4*i] + block[2 + 4*i]);
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const int z1 = 13*(block[0 + 4*i] - block[2 + 4*i]);
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const int z2 = 7* block[1 + 4*i] - 17*block[3 + 4*i];
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const int z3 = 17* block[1 + 4*i] + 7*block[3 + 4*i];
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block[0 + 4*i] = z0 + z3;
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block[1 + 4*i] = z1 + z2;
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block[2 + 4*i] = z1 - z2;
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block[3 + 4*i] = z0 - z3;
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}
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for (i = 0; i < 4; i++) {
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const int z0 = 13*(block[i + 4*0] + block[i + 4*2]);
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const int z1 = 13*(block[i + 4*0] - block[i + 4*2]);
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const int z2 = 7* block[i + 4*1] - 17*block[i + 4*3];
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const int z3 = 17* block[i + 4*1] + 7*block[i + 4*3];
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const int rr = (dc + 0x80000);
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dst[i + stride*0] = cm[ dst[i + stride*0] + (((z0 + z3)*qmul + rr) >> 20) ];
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dst[i + stride*1] = cm[ dst[i + stride*1] + (((z1 + z2)*qmul + rr) >> 20) ];
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dst[i + stride*2] = cm[ dst[i + stride*2] + (((z1 - z2)*qmul + rr) >> 20) ];
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dst[i + stride*3] = cm[ dst[i + stride*3] + (((z0 - z3)*qmul + rr) >> 20) ];
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}
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}
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static inline int svq3_decode_block(GetBitContext *gb, DCTELEM *block,
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int index, const int type)
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{
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static const uint8_t *const scan_patterns[4] =
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{ luma_dc_zigzag_scan, zigzag_scan, svq3_scan, chroma_dc_scan };
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int run, level, sign, vlc, limit;
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const int intra = (3 * type) >> 2;
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const uint8_t *const scan = scan_patterns[type];
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for (limit = (16 >> intra); index < 16; index = limit, limit += 8) {
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for (; (vlc = svq3_get_ue_golomb(gb)) != 0; index++) {
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if (vlc == INVALID_VLC)
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return -1;
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sign = (vlc & 0x1) - 1;
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vlc = (vlc + 1) >> 1;
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if (type == 3) {
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if (vlc < 3) {
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run = 0;
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level = vlc;
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} else if (vlc < 4) {
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run = 1;
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level = 1;
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} else {
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run = (vlc & 0x3);
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level = ((vlc + 9) >> 2) - run;
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}
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} else {
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if (vlc < 16) {
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run = svq3_dct_tables[intra][vlc].run;
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level = svq3_dct_tables[intra][vlc].level;
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} else if (intra) {
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run = (vlc & 0x7);
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level = (vlc >> 3) + ((run == 0) ? 8 : ((run < 2) ? 2 : ((run < 5) ? 0 : -1)));
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} else {
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run = (vlc & 0xF);
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level = (vlc >> 4) + ((run == 0) ? 4 : ((run < 3) ? 2 : ((run < 10) ? 1 : 0)));
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}
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}
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if ((index += run) >= limit)
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return -1;
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block[scan[index]] = (level ^ sign) - sign;
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}
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if (type != 2) {
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break;
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}
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}
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return 0;
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}
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static inline void svq3_mc_dir_part(MpegEncContext *s,
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int x, int y, int width, int height,
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int mx, int my, int dxy,
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int thirdpel, int dir, int avg)
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{
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const Picture *pic = (dir == 0) ? &s->last_picture : &s->next_picture;
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uint8_t *src, *dest;
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int i, emu = 0;
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int blocksize = 2 - (width>>3); //16->0, 8->1, 4->2
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mx += x;
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my += y;
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if (mx < 0 || mx >= (s->h_edge_pos - width - 1) ||
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my < 0 || my >= (s->v_edge_pos - height - 1)) {
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if ((s->flags & CODEC_FLAG_EMU_EDGE)) {
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emu = 1;
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}
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mx = av_clip (mx, -16, (s->h_edge_pos - width + 15));
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my = av_clip (my, -16, (s->v_edge_pos - height + 15));
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}
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/* form component predictions */
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dest = s->current_picture.data[0] + x + y*s->linesize;
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src = pic->data[0] + mx + my*s->linesize;
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if (emu) {
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s->dsp.emulated_edge_mc(s->edge_emu_buffer, src, s->linesize, (width + 1), (height + 1),
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mx, my, s->h_edge_pos, s->v_edge_pos);
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src = s->edge_emu_buffer;
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}
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if (thirdpel)
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(avg ? s->dsp.avg_tpel_pixels_tab : s->dsp.put_tpel_pixels_tab)[dxy](dest, src, s->linesize, width, height);
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else
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(avg ? s->dsp.avg_pixels_tab : s->dsp.put_pixels_tab)[blocksize][dxy](dest, src, s->linesize, height);
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if (!(s->flags & CODEC_FLAG_GRAY)) {
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mx = (mx + (mx < (int) x)) >> 1;
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my = (my + (my < (int) y)) >> 1;
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width = (width >> 1);
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height = (height >> 1);
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blocksize++;
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for (i = 1; i < 3; i++) {
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dest = s->current_picture.data[i] + (x >> 1) + (y >> 1)*s->uvlinesize;
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src = pic->data[i] + mx + my*s->uvlinesize;
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if (emu) {
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s->dsp.emulated_edge_mc(s->edge_emu_buffer, src, s->uvlinesize, (width + 1), (height + 1),
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mx, my, (s->h_edge_pos >> 1), (s->v_edge_pos >> 1));
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src = s->edge_emu_buffer;
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}
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if (thirdpel)
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(avg ? s->dsp.avg_tpel_pixels_tab : s->dsp.put_tpel_pixels_tab)[dxy](dest, src, s->uvlinesize, width, height);
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else
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(avg ? s->dsp.avg_pixels_tab : s->dsp.put_pixels_tab)[blocksize][dxy](dest, src, s->uvlinesize, height);
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}
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}
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}
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static inline int svq3_mc_dir(H264Context *h, int size, int mode, int dir,
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int avg)
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{
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int i, j, k, mx, my, dx, dy, x, y;
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MpegEncContext *const s = (MpegEncContext *) h;
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const int part_width = ((size & 5) == 4) ? 4 : 16 >> (size & 1);
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const int part_height = 16 >> ((unsigned) (size + 1) / 3);
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const int extra_width = (mode == PREDICT_MODE) ? -16*6 : 0;
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const int h_edge_pos = 6*(s->h_edge_pos - part_width ) - extra_width;
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const int v_edge_pos = 6*(s->v_edge_pos - part_height) - extra_width;
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for (i = 0; i < 16; i += part_height) {
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for (j = 0; j < 16; j += part_width) {
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const int b_xy = (4*s->mb_x + (j >> 2)) + (4*s->mb_y + (i >> 2))*h->b_stride;
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int dxy;
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x = 16*s->mb_x + j;
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y = 16*s->mb_y + i;
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k = ((j >> 2) & 1) + ((i >> 1) & 2) + ((j >> 1) & 4) + (i & 8);
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if (mode != PREDICT_MODE) {
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pred_motion(h, k, (part_width >> 2), dir, 1, &mx, &my);
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} else {
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mx = s->next_picture.motion_val[0][b_xy][0]<<1;
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my = s->next_picture.motion_val[0][b_xy][1]<<1;
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if (dir == 0) {
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mx = ((mx * h->frame_num_offset) / h->prev_frame_num_offset + 1) >> 1;
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my = ((my * h->frame_num_offset) / h->prev_frame_num_offset + 1) >> 1;
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} else {
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mx = ((mx * (h->frame_num_offset - h->prev_frame_num_offset)) / h->prev_frame_num_offset + 1) >> 1;
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my = ((my * (h->frame_num_offset - h->prev_frame_num_offset)) / h->prev_frame_num_offset + 1) >> 1;
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}
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}
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/* clip motion vector prediction to frame border */
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mx = av_clip(mx, extra_width - 6*x, h_edge_pos - 6*x);
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my = av_clip(my, extra_width - 6*y, v_edge_pos - 6*y);
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/* get (optional) motion vector differential */
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if (mode == PREDICT_MODE) {
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dx = dy = 0;
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} else {
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dy = svq3_get_se_golomb(&s->gb);
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dx = svq3_get_se_golomb(&s->gb);
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if (dx == INVALID_VLC || dy == INVALID_VLC) {
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av_log(h->s.avctx, AV_LOG_ERROR, "invalid MV vlc\n");
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return -1;
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}
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}
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/* compute motion vector */
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if (mode == THIRDPEL_MODE) {
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int fx, fy;
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mx = ((mx + 1)>>1) + dx;
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my = ((my + 1)>>1) + dy;
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fx = ((unsigned)(mx + 0x3000))/3 - 0x1000;
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fy = ((unsigned)(my + 0x3000))/3 - 0x1000;
|
|
dxy = (mx - 3*fx) + 4*(my - 3*fy);
|
|
|
|
svq3_mc_dir_part(s, x, y, part_width, part_height, fx, fy, dxy, 1, dir, avg);
|
|
mx += mx;
|
|
my += my;
|
|
} else if (mode == HALFPEL_MODE || mode == PREDICT_MODE) {
|
|
mx = ((unsigned)(mx + 1 + 0x3000))/3 + dx - 0x1000;
|
|
my = ((unsigned)(my + 1 + 0x3000))/3 + dy - 0x1000;
|
|
dxy = (mx&1) + 2*(my&1);
|
|
|
|
svq3_mc_dir_part(s, x, y, part_width, part_height, mx>>1, my>>1, dxy, 0, dir, avg);
|
|
mx *= 3;
|
|
my *= 3;
|
|
} else {
|
|
mx = ((unsigned)(mx + 3 + 0x6000))/6 + dx - 0x1000;
|
|
my = ((unsigned)(my + 3 + 0x6000))/6 + dy - 0x1000;
|
|
|
|
svq3_mc_dir_part(s, x, y, part_width, part_height, mx, my, 0, 0, dir, avg);
|
|
mx *= 6;
|
|
my *= 6;
|
|
}
|
|
|
|
/* update mv_cache */
|
|
if (mode != PREDICT_MODE) {
|
|
int32_t mv = pack16to32(mx,my);
|
|
|
|
if (part_height == 8 && i < 8) {
|
|
*(int32_t *) h->mv_cache[dir][scan8[k] + 1*8] = mv;
|
|
|
|
if (part_width == 8 && j < 8) {
|
|
*(int32_t *) h->mv_cache[dir][scan8[k] + 1 + 1*8] = mv;
|
|
}
|
|
}
|
|
if (part_width == 8 && j < 8) {
|
|
*(int32_t *) h->mv_cache[dir][scan8[k] + 1] = mv;
|
|
}
|
|
if (part_width == 4 || part_height == 4) {
|
|
*(int32_t *) h->mv_cache[dir][scan8[k]] = mv;
|
|
}
|
|
}
|
|
|
|
/* write back motion vectors */
|
|
fill_rectangle(s->current_picture.motion_val[dir][b_xy], part_width>>2, part_height>>2, h->b_stride, pack16to32(mx,my), 4);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int svq3_decode_mb(SVQ3Context *svq3, unsigned int mb_type)
|
|
{
|
|
H264Context *h = &svq3->h;
|
|
int i, j, k, m, dir, mode;
|
|
int cbp = 0;
|
|
uint32_t vlc;
|
|
int8_t *top, *left;
|
|
MpegEncContext *const s = (MpegEncContext *) h;
|
|
const int mb_xy = h->mb_xy;
|
|
const int b_xy = 4*s->mb_x + 4*s->mb_y*h->b_stride;
|
|
|
|
h->top_samples_available = (s->mb_y == 0) ? 0x33FF : 0xFFFF;
|
|
h->left_samples_available = (s->mb_x == 0) ? 0x5F5F : 0xFFFF;
|
|
h->topright_samples_available = 0xFFFF;
|
|
|
|
if (mb_type == 0) { /* SKIP */
|
|
if (s->pict_type == AV_PICTURE_TYPE_P || s->next_picture.mb_type[mb_xy] == -1) {
|
|
svq3_mc_dir_part(s, 16*s->mb_x, 16*s->mb_y, 16, 16, 0, 0, 0, 0, 0, 0);
|
|
|
|
if (s->pict_type == AV_PICTURE_TYPE_B) {
|
|
svq3_mc_dir_part(s, 16*s->mb_x, 16*s->mb_y, 16, 16, 0, 0, 0, 0, 1, 1);
|
|
}
|
|
|
|
mb_type = MB_TYPE_SKIP;
|
|
} else {
|
|
mb_type = FFMIN(s->next_picture.mb_type[mb_xy], 6);
|
|
if (svq3_mc_dir(h, mb_type, PREDICT_MODE, 0, 0) < 0)
|
|
return -1;
|
|
if (svq3_mc_dir(h, mb_type, PREDICT_MODE, 1, 1) < 0)
|
|
return -1;
|
|
|
|
mb_type = MB_TYPE_16x16;
|
|
}
|
|
} else if (mb_type < 8) { /* INTER */
|
|
if (svq3->thirdpel_flag && svq3->halfpel_flag == !get_bits1 (&s->gb)) {
|
|
mode = THIRDPEL_MODE;
|
|
} else if (svq3->halfpel_flag && svq3->thirdpel_flag == !get_bits1 (&s->gb)) {
|
|
mode = HALFPEL_MODE;
|
|
} else {
|
|
mode = FULLPEL_MODE;
|
|
}
|
|
|
|
/* fill caches */
|
|
/* note ref_cache should contain here:
|
|
????????
|
|
???11111
|
|
N??11111
|
|
N??11111
|
|
N??11111
|
|
*/
|
|
|
|
for (m = 0; m < 2; m++) {
|
|
if (s->mb_x > 0 && h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - 1]+6] != -1) {
|
|
for (i = 0; i < 4; i++) {
|
|
*(uint32_t *) h->mv_cache[m][scan8[0] - 1 + i*8] = *(uint32_t *) s->current_picture.motion_val[m][b_xy - 1 + i*h->b_stride];
|
|
}
|
|
} else {
|
|
for (i = 0; i < 4; i++) {
|
|
*(uint32_t *) h->mv_cache[m][scan8[0] - 1 + i*8] = 0;
|
|
}
|
|
}
|
|
if (s->mb_y > 0) {
|
|
memcpy(h->mv_cache[m][scan8[0] - 1*8], s->current_picture.motion_val[m][b_xy - h->b_stride], 4*2*sizeof(int16_t));
|
|
memset(&h->ref_cache[m][scan8[0] - 1*8], (h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride]] == -1) ? PART_NOT_AVAILABLE : 1, 4);
|
|
|
|
if (s->mb_x < (s->mb_width - 1)) {
|
|
*(uint32_t *) h->mv_cache[m][scan8[0] + 4 - 1*8] = *(uint32_t *) s->current_picture.motion_val[m][b_xy - h->b_stride + 4];
|
|
h->ref_cache[m][scan8[0] + 4 - 1*8] =
|
|
(h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride + 1]+6] == -1 ||
|
|
h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride ] ] == -1) ? PART_NOT_AVAILABLE : 1;
|
|
}else
|
|
h->ref_cache[m][scan8[0] + 4 - 1*8] = PART_NOT_AVAILABLE;
|
|
if (s->mb_x > 0) {
|
|
*(uint32_t *) h->mv_cache[m][scan8[0] - 1 - 1*8] = *(uint32_t *) s->current_picture.motion_val[m][b_xy - h->b_stride - 1];
|
|
h->ref_cache[m][scan8[0] - 1 - 1*8] = (h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride - 1]+3] == -1) ? PART_NOT_AVAILABLE : 1;
|
|
}else
|
|
h->ref_cache[m][scan8[0] - 1 - 1*8] = PART_NOT_AVAILABLE;
|
|
}else
|
|
memset(&h->ref_cache[m][scan8[0] - 1*8 - 1], PART_NOT_AVAILABLE, 8);
|
|
|
|
if (s->pict_type != AV_PICTURE_TYPE_B)
|
|
break;
|
|
}
|
|
|
|
/* decode motion vector(s) and form prediction(s) */
|
|
if (s->pict_type == AV_PICTURE_TYPE_P) {
|
|
if (svq3_mc_dir(h, (mb_type - 1), mode, 0, 0) < 0)
|
|
return -1;
|
|
} else { /* AV_PICTURE_TYPE_B */
|
|
if (mb_type != 2) {
|
|
if (svq3_mc_dir(h, 0, mode, 0, 0) < 0)
|
|
return -1;
|
|
} else {
|
|
for (i = 0; i < 4; i++) {
|
|
memset(s->current_picture.motion_val[0][b_xy + i*h->b_stride], 0, 4*2*sizeof(int16_t));
|
|
}
|
|
}
|
|
if (mb_type != 1) {
|
|
if (svq3_mc_dir(h, 0, mode, 1, (mb_type == 3)) < 0)
|
|
return -1;
|
|
} else {
|
|
for (i = 0; i < 4; i++) {
|
|
memset(s->current_picture.motion_val[1][b_xy + i*h->b_stride], 0, 4*2*sizeof(int16_t));
|
|
}
|
|
}
|
|
}
|
|
|
|
mb_type = MB_TYPE_16x16;
|
|
} else if (mb_type == 8 || mb_type == 33) { /* INTRA4x4 */
|
|
memset(h->intra4x4_pred_mode_cache, -1, 8*5*sizeof(int8_t));
|
|
|
|
if (mb_type == 8) {
|
|
if (s->mb_x > 0) {
|
|
for (i = 0; i < 4; i++) {
|
|
h->intra4x4_pred_mode_cache[scan8[0] - 1 + i*8] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - 1]+6-i];
|
|
}
|
|
if (h->intra4x4_pred_mode_cache[scan8[0] - 1] == -1) {
|
|
h->left_samples_available = 0x5F5F;
|
|
}
|
|
}
|
|
if (s->mb_y > 0) {
|
|
h->intra4x4_pred_mode_cache[4+8*0] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride]+0];
|
|
h->intra4x4_pred_mode_cache[5+8*0] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride]+1];
|
|
h->intra4x4_pred_mode_cache[6+8*0] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride]+2];
|
|
h->intra4x4_pred_mode_cache[7+8*0] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride]+3];
|
|
|
|
if (h->intra4x4_pred_mode_cache[4+8*0] == -1) {
|
|
h->top_samples_available = 0x33FF;
|
|
}
|
|
}
|
|
|
|
/* decode prediction codes for luma blocks */
|
|
for (i = 0; i < 16; i+=2) {
|
|
vlc = svq3_get_ue_golomb(&s->gb);
|
|
|
|
if (vlc >= 25){
|
|
av_log(h->s.avctx, AV_LOG_ERROR, "luma prediction:%d\n", vlc);
|
|
return -1;
|
|
}
|
|
|
|
left = &h->intra4x4_pred_mode_cache[scan8[i] - 1];
|
|
top = &h->intra4x4_pred_mode_cache[scan8[i] - 8];
|
|
|
|
left[1] = svq3_pred_1[top[0] + 1][left[0] + 1][svq3_pred_0[vlc][0]];
|
|
left[2] = svq3_pred_1[top[1] + 1][left[1] + 1][svq3_pred_0[vlc][1]];
|
|
|
|
if (left[1] == -1 || left[2] == -1){
|
|
av_log(h->s.avctx, AV_LOG_ERROR, "weird prediction\n");
|
|
return -1;
|
|
}
|
|
}
|
|
} else { /* mb_type == 33, DC_128_PRED block type */
|
|
for (i = 0; i < 4; i++) {
|
|
memset(&h->intra4x4_pred_mode_cache[scan8[0] + 8*i], DC_PRED, 4);
|
|
}
|
|
}
|
|
|
|
write_back_intra_pred_mode(h);
|
|
|
|
if (mb_type == 8) {
|
|
ff_h264_check_intra4x4_pred_mode(h);
|
|
|
|
h->top_samples_available = (s->mb_y == 0) ? 0x33FF : 0xFFFF;
|
|
h->left_samples_available = (s->mb_x == 0) ? 0x5F5F : 0xFFFF;
|
|
} else {
|
|
for (i = 0; i < 4; i++) {
|
|
memset(&h->intra4x4_pred_mode_cache[scan8[0] + 8*i], DC_128_PRED, 4);
|
|
}
|
|
|
|
h->top_samples_available = 0x33FF;
|
|
h->left_samples_available = 0x5F5F;
|
|
}
|
|
|
|
mb_type = MB_TYPE_INTRA4x4;
|
|
} else { /* INTRA16x16 */
|
|
dir = i_mb_type_info[mb_type - 8].pred_mode;
|
|
dir = (dir >> 1) ^ 3*(dir & 1) ^ 1;
|
|
|
|
if ((h->intra16x16_pred_mode = ff_h264_check_intra_pred_mode(h, dir)) == -1){
|
|
av_log(h->s.avctx, AV_LOG_ERROR, "check_intra_pred_mode = -1\n");
|
|
return -1;
|
|
}
|
|
|
|
cbp = i_mb_type_info[mb_type - 8].cbp;
|
|
mb_type = MB_TYPE_INTRA16x16;
|
|
}
|
|
|
|
if (!IS_INTER(mb_type) && s->pict_type != AV_PICTURE_TYPE_I) {
|
|
for (i = 0; i < 4; i++) {
|
|
memset(s->current_picture.motion_val[0][b_xy + i*h->b_stride], 0, 4*2*sizeof(int16_t));
|
|
}
|
|
if (s->pict_type == AV_PICTURE_TYPE_B) {
|
|
for (i = 0; i < 4; i++) {
|
|
memset(s->current_picture.motion_val[1][b_xy + i*h->b_stride], 0, 4*2*sizeof(int16_t));
|
|
}
|
|
}
|
|
}
|
|
if (!IS_INTRA4x4(mb_type)) {
|
|
memset(h->intra4x4_pred_mode+h->mb2br_xy[mb_xy], DC_PRED, 8);
|
|
}
|
|
if (!IS_SKIP(mb_type) || s->pict_type == AV_PICTURE_TYPE_B) {
|
|
memset(h->non_zero_count_cache + 8, 0, 14*8*sizeof(uint8_t));
|
|
s->dsp.clear_blocks(h->mb+ 0);
|
|
s->dsp.clear_blocks(h->mb+384);
|
|
}
|
|
|
|
if (!IS_INTRA16x16(mb_type) && (!IS_SKIP(mb_type) || s->pict_type == AV_PICTURE_TYPE_B)) {
|
|
if ((vlc = svq3_get_ue_golomb(&s->gb)) >= 48){
|
|
av_log(h->s.avctx, AV_LOG_ERROR, "cbp_vlc=%d\n", vlc);
|
|
return -1;
|
|
}
|
|
|
|
cbp = IS_INTRA(mb_type) ? golomb_to_intra4x4_cbp[vlc] : golomb_to_inter_cbp[vlc];
|
|
}
|
|
if (IS_INTRA16x16(mb_type) || (s->pict_type != AV_PICTURE_TYPE_I && s->adaptive_quant && cbp)) {
|
|
s->qscale += svq3_get_se_golomb(&s->gb);
|
|
|
|
if (s->qscale > 31){
|
|
av_log(h->s.avctx, AV_LOG_ERROR, "qscale:%d\n", s->qscale);
|
|
return -1;
|
|
}
|
|
}
|
|
if (IS_INTRA16x16(mb_type)) {
|
|
AV_ZERO128(h->mb_luma_dc[0]+0);
|
|
AV_ZERO128(h->mb_luma_dc[0]+8);
|
|
if (svq3_decode_block(&s->gb, h->mb_luma_dc, 0, 1)){
|
|
av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding intra luma dc\n");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if (cbp) {
|
|
const int index = IS_INTRA16x16(mb_type) ? 1 : 0;
|
|
const int type = ((s->qscale < 24 && IS_INTRA4x4(mb_type)) ? 2 : 1);
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
if ((cbp & (1 << i))) {
|
|
for (j = 0; j < 4; j++) {
|
|
k = index ? ((j&1) + 2*(i&1) + 2*(j&2) + 4*(i&2)) : (4*i + j);
|
|
h->non_zero_count_cache[ scan8[k] ] = 1;
|
|
|
|
if (svq3_decode_block(&s->gb, &h->mb[16*k], index, type)){
|
|
av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding block\n");
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if ((cbp & 0x30)) {
|
|
for (i = 1; i < 3; ++i) {
|
|
if (svq3_decode_block(&s->gb, &h->mb[16*16*i], 0, 3)){
|
|
av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding chroma dc block\n");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if ((cbp & 0x20)) {
|
|
for (i = 1; i < 3; i++) {
|
|
for (j = 0; j < 4; j++) {
|
|
k = 16*i + j;
|
|
h->non_zero_count_cache[ scan8[k] ] = 1;
|
|
|
|
if (svq3_decode_block(&s->gb, &h->mb[16*k], 1, 1)){
|
|
av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding chroma ac block\n");
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
h->cbp= cbp;
|
|
s->current_picture.mb_type[mb_xy] = mb_type;
|
|
|
|
if (IS_INTRA(mb_type)) {
|
|
h->chroma_pred_mode = ff_h264_check_intra_pred_mode(h, DC_PRED8x8);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int svq3_decode_slice_header(AVCodecContext *avctx)
|
|
{
|
|
SVQ3Context *svq3 = avctx->priv_data;
|
|
H264Context *h = &svq3->h;
|
|
MpegEncContext *s = &h->s;
|
|
const int mb_xy = h->mb_xy;
|
|
int i, header;
|
|
|
|
header = get_bits(&s->gb, 8);
|
|
|
|
if (((header & 0x9F) != 1 && (header & 0x9F) != 2) || (header & 0x60) == 0) {
|
|
/* TODO: what? */
|
|
av_log(avctx, AV_LOG_ERROR, "unsupported slice header (%02X)\n", header);
|
|
return -1;
|
|
} else {
|
|
int length = (header >> 5) & 3;
|
|
|
|
svq3->next_slice_index = get_bits_count(&s->gb) + 8*show_bits(&s->gb, 8*length) + 8*length;
|
|
|
|
if (svq3->next_slice_index > s->gb.size_in_bits) {
|
|
av_log(avctx, AV_LOG_ERROR, "slice after bitstream end\n");
|
|
return -1;
|
|
}
|
|
|
|
s->gb.size_in_bits = svq3->next_slice_index - 8*(length - 1);
|
|
skip_bits(&s->gb, 8);
|
|
|
|
if (svq3->watermark_key) {
|
|
uint32_t header = AV_RL32(&s->gb.buffer[(get_bits_count(&s->gb)>>3)+1]);
|
|
AV_WL32(&s->gb.buffer[(get_bits_count(&s->gb)>>3)+1], header ^ svq3->watermark_key);
|
|
}
|
|
if (length > 0) {
|
|
memcpy((uint8_t *) &s->gb.buffer[get_bits_count(&s->gb) >> 3],
|
|
&s->gb.buffer[s->gb.size_in_bits >> 3], (length - 1));
|
|
}
|
|
skip_bits_long(&s->gb, 0);
|
|
}
|
|
|
|
if ((i = svq3_get_ue_golomb(&s->gb)) == INVALID_VLC || i >= 3){
|
|
av_log(h->s.avctx, AV_LOG_ERROR, "illegal slice type %d \n", i);
|
|
return -1;
|
|
}
|
|
|
|
h->slice_type = golomb_to_pict_type[i];
|
|
|
|
if ((header & 0x9F) == 2) {
|
|
i = (s->mb_num < 64) ? 6 : (1 + av_log2 (s->mb_num - 1));
|
|
s->mb_skip_run = get_bits(&s->gb, i) - (s->mb_x + (s->mb_y * s->mb_width));
|
|
} else {
|
|
skip_bits1(&s->gb);
|
|
s->mb_skip_run = 0;
|
|
}
|
|
|
|
h->slice_num = get_bits(&s->gb, 8);
|
|
s->qscale = get_bits(&s->gb, 5);
|
|
s->adaptive_quant = get_bits1(&s->gb);
|
|
|
|
/* unknown fields */
|
|
skip_bits1(&s->gb);
|
|
|
|
if (svq3->unknown_flag) {
|
|
skip_bits1(&s->gb);
|
|
}
|
|
|
|
skip_bits1(&s->gb);
|
|
skip_bits(&s->gb, 2);
|
|
|
|
while (get_bits1(&s->gb)) {
|
|
skip_bits(&s->gb, 8);
|
|
}
|
|
|
|
/* reset intra predictors and invalidate motion vector references */
|
|
if (s->mb_x > 0) {
|
|
memset(h->intra4x4_pred_mode+h->mb2br_xy[mb_xy - 1 ]+3, -1, 4*sizeof(int8_t));
|
|
memset(h->intra4x4_pred_mode+h->mb2br_xy[mb_xy - s->mb_x] , -1, 8*sizeof(int8_t)*s->mb_x);
|
|
}
|
|
if (s->mb_y > 0) {
|
|
memset(h->intra4x4_pred_mode+h->mb2br_xy[mb_xy - s->mb_stride], -1, 8*sizeof(int8_t)*(s->mb_width - s->mb_x));
|
|
|
|
if (s->mb_x > 0) {
|
|
h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride - 1]+3] = -1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static av_cold int svq3_decode_init(AVCodecContext *avctx)
|
|
{
|
|
SVQ3Context *svq3 = avctx->priv_data;
|
|
H264Context *h = &svq3->h;
|
|
MpegEncContext *s = &h->s;
|
|
int m;
|
|
unsigned char *extradata;
|
|
unsigned int size;
|
|
|
|
if (ff_h264_decode_init(avctx) < 0)
|
|
return -1;
|
|
|
|
s->flags = avctx->flags;
|
|
s->flags2 = avctx->flags2;
|
|
s->unrestricted_mv = 1;
|
|
h->is_complex=1;
|
|
avctx->pix_fmt = avctx->codec->pix_fmts[0];
|
|
|
|
if (!s->context_initialized) {
|
|
h->chroma_qp[0] = h->chroma_qp[1] = 4;
|
|
|
|
svq3->halfpel_flag = 1;
|
|
svq3->thirdpel_flag = 1;
|
|
svq3->unknown_flag = 0;
|
|
|
|
|
|
/* prowl for the "SEQH" marker in the extradata */
|
|
extradata = (unsigned char *)avctx->extradata;
|
|
for (m = 0; m < avctx->extradata_size; m++) {
|
|
if (!memcmp(extradata, "SEQH", 4))
|
|
break;
|
|
extradata++;
|
|
}
|
|
|
|
/* if a match was found, parse the extra data */
|
|
if (extradata && !memcmp(extradata, "SEQH", 4)) {
|
|
|
|
GetBitContext gb;
|
|
int frame_size_code;
|
|
|
|
size = AV_RB32(&extradata[4]);
|
|
init_get_bits(&gb, extradata + 8, size*8);
|
|
|
|
/* 'frame size code' and optional 'width, height' */
|
|
frame_size_code = get_bits(&gb, 3);
|
|
switch (frame_size_code) {
|
|
case 0: avctx->width = 160; avctx->height = 120; break;
|
|
case 1: avctx->width = 128; avctx->height = 96; break;
|
|
case 2: avctx->width = 176; avctx->height = 144; break;
|
|
case 3: avctx->width = 352; avctx->height = 288; break;
|
|
case 4: avctx->width = 704; avctx->height = 576; break;
|
|
case 5: avctx->width = 240; avctx->height = 180; break;
|
|
case 6: avctx->width = 320; avctx->height = 240; break;
|
|
case 7:
|
|
avctx->width = get_bits(&gb, 12);
|
|
avctx->height = get_bits(&gb, 12);
|
|
break;
|
|
}
|
|
|
|
svq3->halfpel_flag = get_bits1(&gb);
|
|
svq3->thirdpel_flag = get_bits1(&gb);
|
|
|
|
/* unknown fields */
|
|
skip_bits1(&gb);
|
|
skip_bits1(&gb);
|
|
skip_bits1(&gb);
|
|
skip_bits1(&gb);
|
|
|
|
s->low_delay = get_bits1(&gb);
|
|
|
|
/* unknown field */
|
|
skip_bits1(&gb);
|
|
|
|
while (get_bits1(&gb)) {
|
|
skip_bits(&gb, 8);
|
|
}
|
|
|
|
svq3->unknown_flag = get_bits1(&gb);
|
|
avctx->has_b_frames = !s->low_delay;
|
|
if (svq3->unknown_flag) {
|
|
#if CONFIG_ZLIB
|
|
unsigned watermark_width = svq3_get_ue_golomb(&gb);
|
|
unsigned watermark_height = svq3_get_ue_golomb(&gb);
|
|
int u1 = svq3_get_ue_golomb(&gb);
|
|
int u2 = get_bits(&gb, 8);
|
|
int u3 = get_bits(&gb, 2);
|
|
int u4 = svq3_get_ue_golomb(&gb);
|
|
unsigned long buf_len = watermark_width*watermark_height*4;
|
|
int offset = (get_bits_count(&gb)+7)>>3;
|
|
uint8_t *buf;
|
|
|
|
if ((uint64_t)watermark_width*4 > UINT_MAX/watermark_height)
|
|
return -1;
|
|
|
|
buf = av_malloc(buf_len);
|
|
av_log(avctx, AV_LOG_DEBUG, "watermark size: %dx%d\n", watermark_width, watermark_height);
|
|
av_log(avctx, AV_LOG_DEBUG, "u1: %x u2: %x u3: %x compressed data size: %d offset: %d\n", u1, u2, u3, u4, offset);
|
|
if (uncompress(buf, &buf_len, extradata + 8 + offset, size - offset) != Z_OK) {
|
|
av_log(avctx, AV_LOG_ERROR, "could not uncompress watermark logo\n");
|
|
av_free(buf);
|
|
return -1;
|
|
}
|
|
svq3->watermark_key = ff_svq1_packet_checksum(buf, buf_len, 0);
|
|
svq3->watermark_key = svq3->watermark_key << 16 | svq3->watermark_key;
|
|
av_log(avctx, AV_LOG_DEBUG, "watermark key %#x\n", svq3->watermark_key);
|
|
av_free(buf);
|
|
#else
|
|
av_log(avctx, AV_LOG_ERROR, "this svq3 file contains watermark which need zlib support compiled in\n");
|
|
return -1;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
s->width = avctx->width;
|
|
s->height = avctx->height;
|
|
|
|
if (MPV_common_init(s) < 0)
|
|
return -1;
|
|
|
|
h->b_stride = 4*s->mb_width;
|
|
|
|
ff_h264_alloc_tables(h);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int svq3_decode_frame(AVCodecContext *avctx,
|
|
void *data, int *data_size,
|
|
AVPacket *avpkt)
|
|
{
|
|
SVQ3Context *svq3 = avctx->priv_data;
|
|
H264Context *h = &svq3->h;
|
|
MpegEncContext *s = &h->s;
|
|
int buf_size = avpkt->size;
|
|
int m, mb_type, left;
|
|
uint8_t *buf;
|
|
|
|
/* special case for last picture */
|
|
if (buf_size == 0) {
|
|
if (s->next_picture_ptr && !s->low_delay) {
|
|
*(AVFrame *) data = *(AVFrame *) &s->next_picture;
|
|
s->next_picture_ptr = NULL;
|
|
*data_size = sizeof(AVFrame);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
s->mb_x = s->mb_y = h->mb_xy = 0;
|
|
|
|
if (svq3->watermark_key) {
|
|
av_fast_malloc(&svq3->buf, &svq3->buf_size,
|
|
buf_size+FF_INPUT_BUFFER_PADDING_SIZE);
|
|
if (!svq3->buf)
|
|
return AVERROR(ENOMEM);
|
|
memcpy(svq3->buf, avpkt->data, buf_size);
|
|
buf = svq3->buf;
|
|
} else {
|
|
buf = avpkt->data;
|
|
}
|
|
|
|
init_get_bits(&s->gb, buf, 8*buf_size);
|
|
|
|
if (svq3_decode_slice_header(avctx))
|
|
return -1;
|
|
|
|
s->pict_type = h->slice_type;
|
|
s->picture_number = h->slice_num;
|
|
|
|
if (avctx->debug&FF_DEBUG_PICT_INFO){
|
|
av_log(h->s.avctx, AV_LOG_DEBUG, "%c hpel:%d, tpel:%d aqp:%d qp:%d, slice_num:%02X\n",
|
|
av_get_picture_type_char(s->pict_type), svq3->halfpel_flag, svq3->thirdpel_flag,
|
|
s->adaptive_quant, s->qscale, h->slice_num);
|
|
}
|
|
|
|
/* for skipping the frame */
|
|
s->current_picture.pict_type = s->pict_type;
|
|
s->current_picture.key_frame = (s->pict_type == AV_PICTURE_TYPE_I);
|
|
|
|
/* Skip B-frames if we do not have reference frames. */
|
|
if (s->last_picture_ptr == NULL && s->pict_type == AV_PICTURE_TYPE_B)
|
|
return 0;
|
|
if ( (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type == AV_PICTURE_TYPE_B)
|
|
||(avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type != AV_PICTURE_TYPE_I)
|
|
|| avctx->skip_frame >= AVDISCARD_ALL)
|
|
return 0;
|
|
|
|
if (s->next_p_frame_damaged) {
|
|
if (s->pict_type == AV_PICTURE_TYPE_B)
|
|
return 0;
|
|
else
|
|
s->next_p_frame_damaged = 0;
|
|
}
|
|
|
|
if (ff_h264_frame_start(h) < 0)
|
|
return -1;
|
|
|
|
if (s->pict_type == AV_PICTURE_TYPE_B) {
|
|
h->frame_num_offset = (h->slice_num - h->prev_frame_num);
|
|
|
|
if (h->frame_num_offset < 0) {
|
|
h->frame_num_offset += 256;
|
|
}
|
|
if (h->frame_num_offset == 0 || h->frame_num_offset >= h->prev_frame_num_offset) {
|
|
av_log(h->s.avctx, AV_LOG_ERROR, "error in B-frame picture id\n");
|
|
return -1;
|
|
}
|
|
} else {
|
|
h->prev_frame_num = h->frame_num;
|
|
h->frame_num = h->slice_num;
|
|
h->prev_frame_num_offset = (h->frame_num - h->prev_frame_num);
|
|
|
|
if (h->prev_frame_num_offset < 0) {
|
|
h->prev_frame_num_offset += 256;
|
|
}
|
|
}
|
|
|
|
for (m = 0; m < 2; m++){
|
|
int i;
|
|
for (i = 0; i < 4; i++){
|
|
int j;
|
|
for (j = -1; j < 4; j++)
|
|
h->ref_cache[m][scan8[0] + 8*i + j]= 1;
|
|
if (i < 3)
|
|
h->ref_cache[m][scan8[0] + 8*i + j]= PART_NOT_AVAILABLE;
|
|
}
|
|
}
|
|
|
|
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++) {
|
|
h->mb_xy = s->mb_x + s->mb_y*s->mb_stride;
|
|
|
|
if ( (get_bits_count(&s->gb) + 7) >= s->gb.size_in_bits &&
|
|
((get_bits_count(&s->gb) & 7) == 0 || show_bits(&s->gb, (-get_bits_count(&s->gb) & 7)) == 0)) {
|
|
|
|
skip_bits(&s->gb, svq3->next_slice_index - get_bits_count(&s->gb));
|
|
s->gb.size_in_bits = 8*buf_size;
|
|
|
|
if (svq3_decode_slice_header(avctx))
|
|
return -1;
|
|
|
|
/* TODO: support s->mb_skip_run */
|
|
}
|
|
|
|
mb_type = svq3_get_ue_golomb(&s->gb);
|
|
|
|
if (s->pict_type == AV_PICTURE_TYPE_I) {
|
|
mb_type += 8;
|
|
} else if (s->pict_type == AV_PICTURE_TYPE_B && mb_type >= 4) {
|
|
mb_type += 4;
|
|
}
|
|
if ((unsigned)mb_type > 33 || svq3_decode_mb(svq3, mb_type)) {
|
|
av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
|
|
return -1;
|
|
}
|
|
|
|
if (mb_type != 0) {
|
|
ff_h264_hl_decode_mb (h);
|
|
}
|
|
|
|
if (s->pict_type != AV_PICTURE_TYPE_B && !s->low_delay) {
|
|
s->current_picture.mb_type[s->mb_x + s->mb_y*s->mb_stride] =
|
|
(s->pict_type == AV_PICTURE_TYPE_P && mb_type < 8) ? (mb_type - 1) : -1;
|
|
}
|
|
}
|
|
|
|
ff_draw_horiz_band(s, 16*s->mb_y, 16);
|
|
}
|
|
|
|
left = buf_size*8 - get_bits_count(&s->gb);
|
|
|
|
if (s->mb_y != s->mb_height || s->mb_x != s->mb_width) {
|
|
av_log(avctx, AV_LOG_INFO, "frame num %d incomplete pic x %d y %d left %d\n", avctx->frame_number, s->mb_y, s->mb_x, left);
|
|
//av_hex_dump(stderr, buf+buf_size-8, 8);
|
|
}
|
|
|
|
if (left < 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "frame num %d left %d\n", avctx->frame_number, left);
|
|
return -1;
|
|
}
|
|
|
|
MPV_frame_end(s);
|
|
|
|
if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) {
|
|
*(AVFrame *) data = *(AVFrame *) &s->current_picture;
|
|
} else {
|
|
*(AVFrame *) data = *(AVFrame *) &s->last_picture;
|
|
}
|
|
|
|
/* Do not output the last pic after seeking. */
|
|
if (s->last_picture_ptr || s->low_delay) {
|
|
*data_size = sizeof(AVFrame);
|
|
}
|
|
|
|
return buf_size;
|
|
}
|
|
|
|
static int svq3_decode_end(AVCodecContext *avctx)
|
|
{
|
|
SVQ3Context *svq3 = avctx->priv_data;
|
|
H264Context *h = &svq3->h;
|
|
MpegEncContext *s = &h->s;
|
|
|
|
ff_h264_free_context(h);
|
|
|
|
MPV_common_end(s);
|
|
|
|
av_freep(&svq3->buf);
|
|
svq3->buf_size = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
AVCodec ff_svq3_decoder = {
|
|
"svq3",
|
|
AVMEDIA_TYPE_VIDEO,
|
|
CODEC_ID_SVQ3,
|
|
sizeof(SVQ3Context),
|
|
svq3_decode_init,
|
|
NULL,
|
|
svq3_decode_end,
|
|
svq3_decode_frame,
|
|
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_DELAY,
|
|
.long_name = NULL_IF_CONFIG_SMALL("Sorenson Vector Quantizer 3 / Sorenson Video 3 / SVQ3"),
|
|
.pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_NONE},
|
|
};
|