Libav 0.7.1
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MPEG-1/2 decoder. More...
#include "internal.h"
#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
#include "mpeg12.h"
#include "mpeg12data.h"
#include "mpeg12decdata.h"
#include "bytestream.h"
#include "vdpau_internal.h"
#include "xvmc_internal.h"
#include "thread.h"
Go to the source code of this file.
MPEG-1/2 decoder.
Definition in file mpeg12.c.
#define DECODE_SLICE_ERROR -1 |
Definition at line 1667 of file mpeg12.c.
Referenced by mpeg_decode_slice().
#define DECODE_SLICE_OK 0 |
Definition at line 1668 of file mpeg12.c.
Referenced by mpeg_decode_slice().
#define INIT_2D_VLC_RL | ( | rl, | |
static_size | |||
) |
{\ static RL_VLC_ELEM rl_vlc_table[static_size];\ INIT_VLC_STATIC(&rl.vlc, TEX_VLC_BITS, rl.n + 2,\ &rl.table_vlc[0][1], 4, 2,\ &rl.table_vlc[0][0], 4, 2, static_size);\ \ rl.rl_vlc[0]= rl_vlc_table;\ init_2d_vlc_rl(&rl);\ }
Definition at line 78 of file mpeg12.c.
Referenced by ff_mpeg12_init_vlcs().
#define MB_BTYPE_VLC_BITS 6 |
Definition at line 50 of file mpeg12.c.
Referenced by ff_mpeg12_init_vlcs(), and mpeg_decode_mb().
#define MB_PAT_VLC_BITS 9 |
Definition at line 48 of file mpeg12.c.
Referenced by ff_mpeg12_init_vlcs(), and mpeg_decode_mb().
#define MB_PTYPE_VLC_BITS 6 |
Definition at line 49 of file mpeg12.c.
Referenced by ff_mpeg12_init_vlcs(), and mpeg_decode_mb().
#define MBINCR_VLC_BITS 9 |
Definition at line 47 of file mpeg12.c.
Referenced by ff_mpeg12_init_vlcs(), and mpeg_decode_slice().
#define MT_DMV 3 |
Definition at line 209 of file mpeg12.c.
Referenced by mpeg_decode_mb().
#define MT_FIELD 1 |
Definition at line 206 of file mpeg12.c.
Referenced by mpeg_decode_mb().
#define MT_FRAME 2 |
Definition at line 207 of file mpeg12.c.
Referenced by mpeg_decode_mb().
#define MV_VLC_BITS 9 |
Definition at line 46 of file mpeg12.c.
Referenced by ff_mpeg12_init_vlcs(), and mpeg_decode_motion().
typedef struct Mpeg1Context Mpeg1Context |
static int decode_chunks | ( | AVCodecContext * | avctx, |
AVFrame * | picture, | ||
int * | data_size, | ||
const uint8_t * | buf, | ||
int | buf_size | ||
) | [static] |
Definition at line 2288 of file mpeg12.c.
Referenced by mpeg_decode_frame().
static void exchange_uv | ( | MpegEncContext * | s | ) | [static] |
Definition at line 1601 of file mpeg12.c.
Referenced by mpeg_decode_mb(), and vcr2_init_sequence().
void ff_mpeg12_common_init | ( | MpegEncContext * | s | ) |
Definition at line 122 of file mpeg12.c.
Referenced by ff_mpeg1_encode_init(), and mpeg_decode_init().
av_cold void ff_mpeg12_init_vlcs | ( | void | ) |
Definition at line 150 of file mpeg12.c.
Referenced by decode_init(), mpeg_decode_init(), and tqi_decode_init().
void ff_mpeg1_clean_buffers | ( | MpegEncContext * | s | ) |
Definition at line 130 of file mpeg12.c.
Referenced by encode_thread(), and mpeg_decode_slice().
int ff_mpeg1_decode_block_intra | ( | MpegEncContext * | s, |
DCTELEM * | block, | ||
int | n | ||
) |
Definition at line 689 of file mpeg12.c.
Referenced by tqi_decode_mb().
int ff_mpeg1_find_frame_end | ( | ParseContext * | pc, |
const uint8_t * | buf, | ||
int | buf_size, | ||
AVCodecParserContext * | s | ||
) |
Find the end of the current frame in the bitstream.
Definition at line 2174 of file mpeg12.c.
Referenced by mpeg_decode_frame(), and mpegvideo_parse().
static void flush | ( | AVCodecContext * | avctx | ) | [static] |
static int get_dmv | ( | MpegEncContext * | s | ) | [inline, static] |
Definition at line 187 of file mpeg12.c.
Referenced by mpeg_decode_mb().
static int get_qscale | ( | MpegEncContext * | s | ) | [inline, static] |
Definition at line 195 of file mpeg12.c.
Referenced by mpeg_decode_mb(), and mpeg_decode_slice().
static int load_matrix | ( | MpegEncContext * | s, |
uint16_t | matrix0[64], | ||
uint16_t | matrix1[64], | ||
int | intra | ||
) | [static] |
Definition at line 1493 of file mpeg12.c.
Referenced by mpeg1_decode_sequence(), and mpeg_decode_quant_matrix_extension().
static int mpeg1_decode_block_inter | ( | MpegEncContext * | s, |
DCTELEM * | block, | ||
int | n | ||
) | [inline, static] |
Definition at line 696 of file mpeg12.c.
Referenced by mpeg_decode_mb().
static int mpeg1_decode_block_intra | ( | MpegEncContext * | s, |
DCTELEM * | block, | ||
int | n | ||
) | [inline, static] |
Definition at line 616 of file mpeg12.c.
Referenced by ff_mpeg1_decode_block_intra(), and mpeg_decode_mb().
static int mpeg1_decode_picture | ( | AVCodecContext * | avctx, |
const uint8_t * | buf, | ||
int | buf_size | ||
) | [static] |
Definition at line 1357 of file mpeg12.c.
Referenced by decode_chunks().
static int mpeg1_decode_sequence | ( | AVCodecContext * | avctx, |
const uint8_t * | buf, | ||
int | buf_size | ||
) | [static] |
Definition at line 1985 of file mpeg12.c.
Referenced by decode_chunks().
static int mpeg1_fast_decode_block_inter | ( | MpegEncContext * | s, |
DCTELEM * | block, | ||
int | n | ||
) | [inline, static] |
Definition at line 773 of file mpeg12.c.
Referenced by mpeg_decode_mb().
static int mpeg2_decode_block_intra | ( | MpegEncContext * | s, |
DCTELEM * | block, | ||
int | n | ||
) | [inline, static] |
Definition at line 989 of file mpeg12.c.
Referenced by mpeg_decode_mb().
static int mpeg2_decode_block_non_intra | ( | MpegEncContext * | s, |
DCTELEM * | block, | ||
int | n | ||
) | [inline, static] |
Definition at line 845 of file mpeg12.c.
Referenced by mpeg_decode_mb().
static int mpeg2_fast_decode_block_intra | ( | MpegEncContext * | s, |
DCTELEM * | block, | ||
int | n | ||
) | [inline, static] |
Definition at line 1069 of file mpeg12.c.
Referenced by mpeg_decode_mb().
static int mpeg2_fast_decode_block_non_intra | ( | MpegEncContext * | s, |
DCTELEM * | block, | ||
int | n | ||
) | [inline, static] |
Definition at line 926 of file mpeg12.c.
Referenced by mpeg_decode_mb().
static int mpeg_decode_end | ( | AVCodecContext * | avctx | ) | [static] |
static int mpeg_decode_frame | ( | AVCodecContext * | avctx, |
void * | data, | ||
int * | data_size, | ||
AVPacket * | avpkt | ||
) | [static] |
static void mpeg_decode_gop | ( | AVCodecContext * | avctx, |
const uint8_t * | buf, | ||
int | buf_size | ||
) | [static] |
Definition at line 2140 of file mpeg12.c.
Referenced by decode_chunks().
static av_cold int mpeg_decode_init | ( | AVCodecContext * | avctx | ) | [static] |
static int mpeg_decode_mb | ( | MpegEncContext * | s, |
DCTELEM | block[12][64] | ||
) | [static] |
Definition at line 211 of file mpeg12.c.
Referenced by mpeg_decode_slice().
static int mpeg_decode_motion | ( | MpegEncContext * | s, |
int | fcode, | ||
int | pred | ||
) | [static] |
Definition at line 586 of file mpeg12.c.
Referenced by mpeg_decode_mb().
static void mpeg_decode_picture_coding_extension | ( | Mpeg1Context * | s1 | ) | [static] |
Definition at line 1524 of file mpeg12.c.
Referenced by decode_chunks().
static void mpeg_decode_picture_display_extension | ( | Mpeg1Context * | s1 | ) | [static] |
Definition at line 1459 of file mpeg12.c.
Referenced by decode_chunks().
static int mpeg_decode_postinit | ( | AVCodecContext * | avctx | ) | [static] |
Definition at line 1239 of file mpeg12.c.
Referenced by decode_chunks().
static void mpeg_decode_quant_matrix_extension | ( | MpegEncContext * | s | ) | [static] |
Definition at line 1514 of file mpeg12.c.
Referenced by decode_chunks().
static void mpeg_decode_sequence_display_extension | ( | Mpeg1Context * | s1 | ) | [static] |
Definition at line 1435 of file mpeg12.c.
Referenced by decode_chunks().
static void mpeg_decode_sequence_extension | ( | Mpeg1Context * | s1 | ) | [static] |
Definition at line 1399 of file mpeg12.c.
Referenced by decode_chunks().
static int mpeg_decode_slice | ( | Mpeg1Context * | s1, |
int | mb_y, | ||
const uint8_t ** | buf, | ||
int | buf_size | ||
) | [static] |
decodes a slice.
MpegEncContext.mb_y must be set to the MB row from the startcode
Definition at line 1675 of file mpeg12.c.
Referenced by decode_chunks(), and slice_decode_thread().
static int mpeg_decode_update_thread_context | ( | AVCodecContext * | avctx, |
const AVCodecContext * | avctx_from | ||
) | [static] |
static void mpeg_decode_user_data | ( | AVCodecContext * | avctx, |
const uint8_t * | p, | ||
int | buf_size | ||
) | [static] |
Definition at line 2118 of file mpeg12.c.
Referenced by decode_chunks().
static int mpeg_field_start | ( | MpegEncContext * | s, |
const uint8_t * | buf, | ||
int | buf_size | ||
) | [static] |
Definition at line 1609 of file mpeg12.c.
Referenced by decode_chunks().
static enum PixelFormat mpeg_get_pixelformat | ( | AVCodecContext * | avctx | ) | [static] |
Definition at line 1216 of file mpeg12.c.
Referenced by vcr2_init_sequence().
static void quant_matrix_rebuild | ( | uint16_t * | matrix, |
const uint8_t * | old_perm, | ||
const uint8_t * | new_perm | ||
) | [static] |
static int slice_decode_thread | ( | AVCodecContext * | c, |
void * | arg | ||
) | [static] |
Definition at line 1897 of file mpeg12.c.
Referenced by decode_chunks().
static int slice_end | ( | AVCodecContext * | avctx, |
AVFrame * | pict | ||
) | [static] |
Handle slice ends.
Definition at line 1939 of file mpeg12.c.
Referenced by decode_chunks().
static int vcr2_init_sequence | ( | AVCodecContext * | avctx | ) | [static] |
Definition at line 2063 of file mpeg12.c.
Referenced by mpeg_decode_frame().
uint8_t ff_mpeg12_static_rl_table_store[2][2][2 *MAX_RUN+MAX_LEVEL+3] |
Definition at line 75 of file mpeg12.c.
Referenced by ff_mpeg12_init_vlcs(), and ff_mpeg1_encode_init().
{ "mpeg1video", AVMEDIA_TYPE_VIDEO, CODEC_ID_MPEG1VIDEO, sizeof(Mpeg1Context), mpeg_decode_init, NULL, mpeg_decode_end, mpeg_decode_frame, CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY, .flush= flush, .max_lowres= 3, .long_name= NULL_IF_CONFIG_SMALL("MPEG-1 video"), .update_thread_context= ONLY_IF_THREADS_ENABLED(mpeg_decode_update_thread_context) }
{ "mpeg2video", AVMEDIA_TYPE_VIDEO, CODEC_ID_MPEG2VIDEO, sizeof(Mpeg1Context), mpeg_decode_init, NULL, mpeg_decode_end, mpeg_decode_frame, CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS, .flush= flush, .max_lowres= 3, .long_name= NULL_IF_CONFIG_SMALL("MPEG-2 video"), .profiles = NULL_IF_CONFIG_SMALL(mpeg2_video_profiles), }
{ "mpegvideo", AVMEDIA_TYPE_VIDEO, CODEC_ID_MPEG2VIDEO, sizeof(Mpeg1Context), mpeg_decode_init, NULL, mpeg_decode_end, mpeg_decode_frame, CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS, .flush= flush, .max_lowres= 3, .long_name= NULL_IF_CONFIG_SMALL("MPEG-1 video"), }
VLC mb_btype_vlc [static] |
VLC mb_pat_vlc [static] |
VLC mb_ptype_vlc [static] |
VLC mbincr_vlc [static] |
const AVProfile mpeg2_video_profiles[] [static] |
{ { FF_PROFILE_MPEG2_422, "4:2:2" }, { FF_PROFILE_MPEG2_HIGH, "High" }, { FF_PROFILE_MPEG2_SS, "Spatially Scalable" }, { FF_PROFILE_MPEG2_SNR_SCALABLE, "SNR Scalable" }, { FF_PROFILE_MPEG2_MAIN, "Main" }, { FF_PROFILE_MPEG2_SIMPLE, "Simple" }, { FF_PROFILE_RESERVED, "Reserved" }, { FF_PROFILE_RESERVED, "Reserved" }, { FF_PROFILE_UNKNOWN }, }
enum PixelFormat pixfmt_xvmc_mpg2_420[] [static] |
Definition at line 70 of file mpeg12.c.
Referenced by mpeg_get_pixelformat().