/*
* H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
*
* This library 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 of the License, or (at your option) any later version.
*
* This library 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 this library; 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 "common.h"
#include "dsputil.h"
#include "avcodec.h"
#include "mpegvideo.h"
#include "h264data.h"
#include "golomb.h"
#include "cabac.h"
//#undef NDEBUG
#include <assert.h>
#define interlaced_dct interlaced_dct_is_a_bad_name
#define mb_intra mb_intra_isnt_initalized_see_mb_type
#define LUMA_DC_BLOCK_INDEX 25
#define CHROMA_DC_BLOCK_INDEX 26
#define CHROMA_DC_COEFF_TOKEN_VLC_BITS 8
#define COEFF_TOKEN_VLC_BITS 8
#define TOTAL_ZEROS_VLC_BITS 9
#define CHROMA_DC_TOTAL_ZEROS_VLC_BITS 3
#define RUN_VLC_BITS 3
#define RUN7_VLC_BITS 6
#define MAX_SPS_COUNT 32
#define MAX_PPS_COUNT 256
#define MAX_MMCO_COUNT 66
/* Compiling in interlaced support reduces the speed
* of progressive decoding by about 2%. */
#define ALLOW_INTERLACE
#ifdef ALLOW_INTERLACE
#define MB_MBAFF h->mb_mbaff
#define MB_FIELD h->mb_field_decoding_flag
#define FRAME_MBAFF h->mb_aff_frame
#else
#define MB_MBAFF 0
#define MB_FIELD 0
#define FRAME_MBAFF 0
#undef IS_INTERLACED
#define IS_INTERLACED(mb_type) 0
#endif
/**
* Sequence parameter set
*/
typedef struct SPS{
int profile_idc;
int level_idc;
int transform_bypass; ///< qpprime_y_zero_transform_bypass_flag
int log2_max_frame_num; ///< log2_max_frame_num_minus4 + 4
int poc_type; ///< pic_order_cnt_type
int log2_max_poc_lsb; ///< log2_max_pic_order_cnt_lsb_minus4
int delta_pic_order_always_zero_flag;
int offset_for_non_ref_pic;
int offset_for_top_to_bottom_field;
int poc_cycle_length; ///< num_ref_frames_in_pic_order_cnt_cycle
int ref_frame_count; ///< num_ref_frames
int gaps_in_frame_num_allowed_flag;
int mb_width; ///< frame_width_in_mbs_minus1 + 1
int mb_height; ///< frame_height_in_mbs_minus1 + 1
int frame_mbs_only_flag;
int mb_aff; ///<mb_adaptive_frame_field_flag
int direct_8x8_inference_flag;
int crop; ///< frame_cropping_flag
int crop_left; ///< frame_cropping_rect_left_offset
int crop_right; ///< frame_cropping_rect_right_offset
int crop_top; ///< frame_cropping_rect_top_offset
int crop_bottom; ///< frame_cropping_rect_bottom_offset
int vui_parameters_present_flag;
AVRational sar;
int timing_info_present_flag;
uint32_t num_units_in_tick;
uint32_t time_scale;
int fixed_frame_rate_flag;
short offset_for_ref_frame[256]; //FIXME dyn aloc?
int bitstream_restriction_flag;
int num_reorder_frames;
int scaling_matrix_present;
uint8_t scaling_matrix4[6][16];
uint8_t scaling_matrix8[2][64];
}SPS;
/**
* Picture parameter set
*/
typedef struct PPS{
int sps_id;
int cabac; ///< entropy_coding_mode_flag
int pic_order_present; ///< pic_order_present_flag
int slice_group_count; ///< num_slice_groups_minus1 + 1
int mb_slice_group_map_type;
int ref_count[2]; ///< num_ref_idx_l0/1_active_minus1 + 1
int weighted_pred; ///< weighted_pred_flag
int weighted_bipred_idc;
int init_qp; ///< pic_init_qp_minus26 + 26
int init_qs; ///< pic_init_qs_minus26 + 26
int chroma_qp_index_offset;
int deblocking_filter_parameters_present; ///< deblocking_filter_parameters_present_flag
int constrained_intra_pred; ///< constrained_intra_pred_flag
int redundant_pic_cnt_present; ///< redundant_pic_cnt_present_flag
int transform_8x8_mode; ///< transform_8x8_mode_flag
uint8_t scaling_matrix4[6][16];
uint8_t scaling_matrix8[2][64];
}PPS;
/**
* Memory management control operation opcode.
*/
typedef enum MMCOOpcode{
MMCO_END=0,
MMCO_SHORT2UNUSED,
MMCO_LONG2UNUSED,
MMCO_SHORT2LONG,
MMCO_SET_MAX_LONG,
MMCO_RESET,
MMCO_LONG,
} MMCOOpcode;
/**
* Memory management control operation.
*/
typedef struct MMCO{
MMCOOpcode opcode;
int short_frame_num;
int long_index;
} MMCO;
/**
* H264Context
*/
typedef struct H264Context{
MpegEncContext s;
int nal_ref_idc;
int nal_unit_type;
#define NAL_SLICE 1
#define NAL_DPA 2
#define NAL_DPB 3
#define NAL_DPC 4
#define NAL_IDR_SLICE 5
#define NAL_SEI 6
#define NAL_SPS 7
#define NAL_PPS 8
#define NAL_AUD 9
#define NAL_END_SEQUENCE 10
#define NAL_END_STREAM 11
#define NAL_FILLER_DATA 12
#define NAL_SPS_EXT 13
#define NAL_AUXILIARY_SLICE 19
uint8_t *rbsp_buffer;
unsigned int rbsp_buffer_size;
/**
* Used to parse AVC variant of h264
*/
int is_avc; ///< this flag is != 0 if codec is avc1
int got_avcC; ///< flag used to parse avcC data only once
int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
int chroma_qp; //QPc
int prev_mb_skipped;
int next_mb_skipped;
//prediction stuff
int chroma_pred_mode;
int intra16x16_pred_mode;
int top_mb_xy;
int left_mb_xy[2];
int8_t intra4x4_pred_mode_cache[5*8];
int8_t (*intra4x4_pred_mode)[8];
void (*pred4x4 [9+3])(uint8_t *src, uint8_t *topright, int stride);//FIXME move to dsp?
void (*pred8x8l [9+3])(uint8_t *src, int topleft, int topright, int stride);
void (*pred8x8 [4+3])(uint8_t *src, int stride);
void (*pred16x16[4+3])(uint8_t *src, int stride);
unsigned int topleft_samples_available;
unsigned int top_samples_available;
unsigned int topright_samples_available;
unsigned int left_samples_available;
uint8_t (*top_borders[2])[16+2*8];
uint8_t left_border[2*(17+2*9)];
/**
* non zero coeff count cache.
* is 64 if not available.
*/
DECLARE_ALIGNED_8(uint8_t, non_zero_count_cache[6*8]);
uint8_t (*non_zero_count)[16];
/**
* Motion vector cache.
*/
DECLARE_ALIGNED_8(int16_t, mv_cache[2][5*8][2]);
DECLARE_ALIGNED_8(int8_t, ref_cache[2][5*8]);
#define LIST_NOT_USED -1 //FIXME rename?
#define PART_NOT_AVAILABLE -2
/**
* is 1 if the specific list MV&references are set to 0,0,-2.
*/
int mv_cache_clean[2];
/**
* number of neighbors (top and/or left) that used 8x8 dct
*/
int neighbor_transform_size;
/**
* block_offset[ 0..23] for frame macroblocks
* block_offset[24..47] for field macroblocks
*/
int block_offset[2*(16+8)];
uint32_t *mb2b_xy; //FIXME are these 4 a good idea?
uint32_t *mb2b8_xy;
int b_stride; //FIXME use s->b4_stride
int b8_stride;
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ffmpeg源代码包
共447个文件
c:309个
h:93个
makefile:8个
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2008-11-15
09:45:23
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收起资源包目录
ffmpeg源代码包 (447个子文件)
build_avopt 396B
h264.c 326KB
mpegvideo.c 253KB
h263.c 218KB
postprocess_template.c 190KB
snow.c 174KB
ffserver.c 155KB
ffmpeg.c 149KB
dsputil.c 148KB
dsputil_mmx.c 124KB
dsputil_vis.c 124KB
mpeg12.c 116KB
vp3.c 106KB
utils.c 98KB
mpegaudiodec.c 88KB
matroska.c 87KB
vc9.c 85KB
mov.c 78KB
mjpeg.c 78KB
motion_est.c 77KB
ffplay.c 75KB
simple_idct_mmx.c 74KB
imgconvert.c 72KB
qpel.c 71KB
qdm2.c 69KB
dsputil_altivec.c 66KB
msmpeg4.c 64KB
vorbis.c 62KB
utils.c 60KB
mpeg.c 57KB
h264dsp_mmx.c 56KB
movenc.c 55KB
postprocess_altivec_template.c 52KB
adpcm.c 49KB
postprocess.c 46KB
svq1.c 44KB
mpegts.c 44KB
dvbsubdec.c 44KB
cook.c 44KB
nut.c 44KB
ac3enc.c 44KB
wmadec.c 43KB
jrevdct.c 42KB
rtsp.c 42KB
snowdsp_mmx.c 42KB
huffyuv.c 42KB
indeo3.c 40KB
dv.c 39KB
rm.c 39KB
error_resilience.c 39KB
motion_est_template.c 39KB
dv.c 38KB
vp3dsp_sse2.c 36KB
svq3.c 33KB
parser.c 33KB
lcl.c 32KB
mpegvideo_mmx.c 32KB
asf.c 32KB
rtp.c 31KB
ratecontrol.c 31KB
ffv1.c 31KB
avidec.c 31KB
h261.c 30KB
asf-enc.c 29KB
png.c 29KB
interplayvideo.c 29KB
alac.c 29KB
grab.c 29KB
truemotion1.c 29KB
dsputil_h264_template_altivec.c 28KB
imgresample.c 28KB
flicvideo.c 28KB
h263dec.c 28KB
swf.c 28KB
png.c 27KB
avienc.c 27KB
wmv2.c 26KB
truemotion2.c 26KB
mpegvideo_altivec.c 25KB
jpeg_ls.c 25KB
sonic.c 25KB
xvidff.c 25KB
rv10.c 25KB
nsvdec.c 25KB
idct_mmx_xvid.c 24KB
parse.c 24KB
4xm.c 24KB
mpegaudio.c 24KB
ffm.c 23KB
dsputil_snow_altivec.c 23KB
flac.c 23KB
mace.c 22KB
idct_mmx.c 22KB
smacker.c 22KB
raw.c 21KB
allcodecs.c 21KB
ipmovie.c 21KB
mpegtsenc.c 21KB
zmbv.c 20KB
asv1.c 20KB
共 447 条
- 1
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- 5
资源评论
- mxkong2012-06-09很好用的ffmpeg,只是没有说明文档
- Jack_NaVi2012-04-26这是6.5.3版本吧。
- HonestyZeng2012-10-23在Windows下编译麻烦
- blue2182012-09-07很好,很全
wondee
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