/*
* H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file h264.c
* H.264 / AVC / MPEG4 part10 codec.
* @author Michael Niedermayer <michaelni@gmx.at>
*/
#include "dsputil.h"
#include "avcodec.h"
#include "mpegvideo.h"
#include "h264.h"
#include "h264data.h"
#include "h264_parser.h"
#include "golomb.h"
#include "rectangle.h"
#include "define.h"
#include "internal.h"
#include "cabac.h"
#ifdef ARCH_X86
#include "i386/h264_i386.h"
#endif
//#undef NDEBUG
#include <assert.h>
/**
* Value of Picture.reference when Picture is not a reference picture, but
* is held for delayed output.
*/
#define DELAYED_PIC_REF 4
static VLC coeff_token_vlc[4];
static VLC chroma_dc_coeff_token_vlc;
static VLC total_zeros_vlc[15];
static VLC chroma_dc_total_zeros_vlc[3];
static VLC run_vlc[6];
static VLC run7_vlc;
static void svq3_luma_dc_dequant_idct_c(DCTELEM *block, int qp);
static void svq3_add_idct_c(uint8_t *dst, DCTELEM *block, int stride, int qp, int dc);
static void filter_mb( H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize);
static void filter_mb_fast( H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize);
static av_always_inline uint32_t pack16to32(int a, int b){
#ifdef WORDS_BIGENDIAN
return (b&0xFFFF) + (a<<16);
#else
return (a&0xFFFF) + (b<<16);
#endif
}
const uint8_t ff_rem6[52]={
0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3,
};
const uint8_t ff_log2_tab[256]={
0,0,1,1,2,2,2,2,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,
5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7
};
const uint8_t ff_div6[52]={
0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8,
};
static void fill_caches(H264Context *h, int mb_type, int for_deblock){
MpegEncContext * const s = &h->s;
const int mb_xy= h->mb_xy;
int topleft_xy, top_xy, topright_xy, left_xy[2];
int topleft_type, top_type, topright_type, left_type[2];
int left_block[8];
int topleft_partition= -1;
int i;
top_xy = mb_xy - (s->mb_stride << FIELD_PICTURE);
//FIXME deblocking could skip the intra and nnz parts.
if(for_deblock && (h->slice_num == 1 || h->slice_table[mb_xy] == h->slice_table[top_xy]) && !FRAME_MBAFF)
return;
/* Wow, what a mess, why didn't they simplify the interlacing & intra
* stuff, I can't imagine that these complex rules are worth it. */
topleft_xy = top_xy - 1;
topright_xy= top_xy + 1;
left_xy[1] = left_xy[0] = mb_xy-1;
left_block[0]= 0;
left_block[1]= 1;
left_block[2]= 2;
left_block[3]= 3;
left_block[4]= 7;
left_block[5]= 10;
left_block[6]= 8;
left_block[7]= 11;
if(FRAME_MBAFF){
const int pair_xy = s->mb_x + (s->mb_y & ~1)*s->mb_stride;
const int top_pair_xy = pair_xy - s->mb_stride;
const int topleft_pair_xy = top_pair_xy - 1;
const int topright_pair_xy = top_pair_xy + 1;
const int topleft_mb_frame_flag = !IS_INTERLACED(s->current_picture.mb_type[topleft_pair_xy]);
const int top_mb_frame_flag = !IS_INTERLACED(s->current_picture.mb_type[top_pair_xy]);
const int topright_mb_frame_flag = !IS_INTERLACED(s->current_picture.mb_type[topright_pair_xy]);
const int left_mb_frame_flag = !IS_INTERLACED(s->current_picture.mb_type[pair_xy-1]);
const int curr_mb_frame_flag = !IS_INTERLACED(mb_type);
const int bottom = (s->mb_y & 1);
tprintf(s->avctx, "fill_caches: curr_mb_frame_flag:%d, left_mb_frame_flag:%d, topleft_mb_frame_flag:%d, top_mb_frame_flag:%d, topright_mb_frame_flag:%d\n", curr_mb_frame_flag, left_mb_frame_flag, topleft_mb_frame_flag, top_mb_frame_flag, topright_mb_frame_flag);
if (bottom
? !curr_mb_frame_flag // bottom macroblock
: (!curr_mb_frame_flag && !top_mb_frame_flag) // top macroblock
) {
top_xy -= s->mb_stride;
}
if (bottom
? !curr_mb_frame_flag // bottom macroblock
: (!curr_mb_frame_flag && !topleft_mb_frame_flag) // top macroblock
) {
topleft_xy -= s->mb_stride;
} else if(bottom && curr_mb_frame_flag && !left_mb_frame_flag) {
topleft_xy += s->mb_stride;
// take topleft mv from the middle of the mb, as opposed to all other modes which use the bottom-right partition
topleft_partition = 0;
}
if (bottom
? !curr_mb_frame_flag // bottom macroblock
: (!curr_mb_frame_flag && !topright_mb_frame_flag) // top macroblock
) {
topright_xy -= s->mb_stride;
}
if (left_mb_frame_flag != curr_mb_frame_flag) {
left_xy[1] = left_xy[0] = pair_xy - 1;
if (curr_mb_frame_flag) {
if (bottom) {
left_block[0]= 2;
left_block[1]= 2;
left_block[2]= 3;
left_block[3]= 3;
left_block[4]= 8;
left_block[5]= 11;
left_block[6]= 8;
left_block[7]= 11;
} else {
left_block[0]= 0;
left_block[1]= 0;
left_block[2]= 1;
left_block[3]= 1;
left_block[4]= 7;
left_block[5]= 10;
left_block[6]= 7;
left_block[7]= 10;
}
} else {
left_xy[1] += s->mb_stride;
//left_block[0]= 0;
left_block[1]= 2;
left_block[2]= 0;
left_block[3]= 2;
//left_block[4]= 7;
left_block[5]= 10;
left_block[6]= 7;
left_block[7]= 10;
}
}
}
h->top_mb_xy = top_xy;
h->left_mb_xy[0] = left_xy[0];
h->left_mb_xy[1] = left_xy[1];
if(for_deblock){
topleft_type = 0;
topright_type = 0;
top_type = h->slice_table[top_xy ] < 255 ? s->current_picture.mb_type[top_xy] : 0;
left_type[0] = h->slice_table[left_
H264.rar （74个子文件） 
H264 
intreadwrite.h 7KB bswap.h 3KB dsputil.c 158KB h264.vcproj 13KB simple_idct.c 17KB main.c 7KB h264.h 13KB log.h 4KB bitstream.c 10KB h264data.h 57KB internal.h 7KB h264.vcproj.PC-201008231139.Administrator.user 1KB utils.c 71KB imgconvert.h 1KB mem.c 4KB golomb.h 12KB rational.h 3KB eval.h 4KB parser.c 10KB h264idct.c 6KB ratecontrol.h 3KB mem.h 4KB integer.h 2KB h264.c 321KB log.c 3KB error_resilience.c 40KB h264enc.c 3KB common.h 11KB mpeg12data.h 2KB opt.h 3KB mpegvideo.c 89KB jrevdct.c 44KB ffmpeg.def 216B imgconvert.c 82KB x86_cpu.h 2KB avutil.h 7KB define.h 415B apiexample.c 12KB dsputil.h 29KB vp3dsp.c 7KB Debug BuildLog.htm 12KB rectangle.h 4KB mjpegenc.h 2KB cabac.c 8KB cabac.h 25KB simple_idct.h 2KB h264.dsp 5KB crc.h 1KB output_example.c 16KB avcodec.h 96KB intfloat_readwrite.h 1KB h264_parser.h 1KB rational.c 3KB mathematics.h 2KB parser.h 2KB h264pred.c 37KB mpegvideo.h 38KB mpegvideo_common.h 25KB msmpeg4.h 3KB colorspace.h 4KB bitstream.h 28KB Release h264dspenc.c 2KB faandct.h 1KB h264_parser.c 4KB golomb.c 10KB h264.dsw 533B opt.c 16KB svq3.c 33KB h264pred.h 2KB rl.h 3KB h264.vcproj.PC-201103101044.Administrator.user 1KB h264.suo 61KB allcodecs.c 13KB h264.sln 873B
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