#include "libavutil/opt.h"#include "mpegvideo.h"#include "mpeg4video.h"#include "h263.h"#include "thread.h"Go to the source code of this file.
| #define DC_VLC_BITS 9 |
Definition at line 36 of file mpeg4videodec.c.
| #define MB_TYPE_B_VLC_BITS 4 |
| #define SPRITE_TRAJ_VLC_BITS 6 |
Definition at line 35 of file mpeg4videodec.c.
Referenced by decode_init(), and mpeg4_decode_sprite_trajectory().
| #define UNCHECKED_BITSTREAM_READER 1 |
Definition at line 23 of file mpeg4videodec.c.
| static av_cold int decode_init | ( | AVCodecContext * | avctx | ) | [static] |
Definition at line 2255 of file mpeg4videodec.c.
| static int decode_user_data | ( | MpegEncContext * | s, | |
| GetBitContext * | gb | |||
| ) | [static] |
Decode the user data stuff in the header.
Also initializes divx/xvid/lavc_version/build.
Definition at line 1879 of file mpeg4videodec.c.
Referenced by ff_mpeg4_decode_picture_header().
| static int decode_vol_header | ( | MpegEncContext * | s, | |
| GetBitContext * | gb | |||
| ) | [static] |
| static int decode_vop_header | ( | MpegEncContext * | s, | |
| GetBitContext * | gb | |||
| ) | [static] |
| int ff_mpeg4_decode_partitions | ( | MpegEncContext * | s | ) |
Decode the first and second partition.
Definition at line 793 of file mpeg4videodec.c.
Referenced by decode_slice().
| int ff_mpeg4_decode_picture_header | ( | MpegEncContext * | s, | |
| GetBitContext * | gb | |||
| ) |
Decode mpeg4 headers.
Definition at line 2166 of file mpeg4videodec.c.
Referenced by av_mpeg4_decode_header(), and ff_h263_decode_frame().
| int ff_mpeg4_decode_video_packet_header | ( | MpegEncContext * | s | ) |
Decode the next video packet.
Definition at line 361 of file mpeg4videodec.c.
Referenced by ff_h263_resync().
| void ff_mpeg4_pred_ac | ( | MpegEncContext * | s, | |
| DCTELEM * | block, | |||
| int | n, | |||
| int | dir | |||
| ) |
Predict the ac.
| n | block index (0-3 are luma, 4-5 are chroma) | |
| dir | the ac prediction direction |
Definition at line 56 of file mpeg4videodec.c.
Referenced by ff_msmpeg4_decode_block(), and mpeg4_decode_block().
| static int get_amv | ( | MpegEncContext * | s, | |
| int | n | |||
| ) | [inline, static] |
Get the average motion vector for a GMC MB.
| n | either 0 for the x component or 1 for y |
Definition at line 449 of file mpeg4videodec.c.
Referenced by mpeg4_decode_mb(), and mpeg4_decode_partition_a().
| static int mpeg4_decode_block | ( | MpegEncContext * | s, | |
| DCTELEM * | block, | |||
| int | n, | |||
| int | coded, | |||
| int | intra, | |||
| int | rvlc | |||
| ) | [inline, static] |
Decode a block.
Definition at line 846 of file mpeg4videodec.c.
Referenced by mpeg4_decode_mb(), and mpeg4_decode_partitioned_mb().
| static int mpeg4_decode_dc | ( | MpegEncContext * | s, | |
| int | n, | |||
| int * | dir_ptr | |||
| ) | [inline, static] |
Decode the dc value.
| n | block index (0-3 are luma, 4-5 are chroma) | |
| dir_ptr | the prediction direction will be stored here |
Definition at line 496 of file mpeg4videodec.c.
Referenced by mpeg4_decode_block(), mpeg4_decode_partition_a(), and mpeg4_decode_partition_b().
| static int mpeg4_decode_gop_header | ( | MpegEncContext * | s, | |
| GetBitContext * | gb | |||
| ) | [static] |
| static int mpeg4_decode_mb | ( | MpegEncContext * | s, | |
| DCTELEM | block[6][64] | |||
| ) | [static] |
Definition at line 1174 of file mpeg4videodec.c.
Referenced by decode_init(), and decode_vop_header().
| static int mpeg4_decode_partition_a | ( | MpegEncContext * | s | ) | [static] |
Decode first partition.
Definition at line 541 of file mpeg4videodec.c.
Referenced by ff_mpeg4_decode_partitions().
| static int mpeg4_decode_partition_b | ( | MpegEncContext * | s, | |
| int | mb_count | |||
| ) | [static] |
decode second partition.
Definition at line 706 of file mpeg4videodec.c.
Referenced by ff_mpeg4_decode_partitions().
| static int mpeg4_decode_partitioned_mb | ( | MpegEncContext * | s, | |
| DCTELEM | block[6][64] | |||
| ) | [static] |
decode partition C of one MB.
Definition at line 1092 of file mpeg4videodec.c.
Referenced by decode_vop_header().
| static int mpeg4_decode_profile_level | ( | MpegEncContext * | s, | |
| GetBitContext * | gb | |||
| ) | [static] |
| static int mpeg4_decode_sprite_trajectory | ( | MpegEncContext * | s, | |
| GetBitContext * | gb | |||
| ) | [static] |
Definition at line 163 of file mpeg4videodec.c.
Referenced by decode_vop_header(), and ff_mpeg4_decode_video_packet_header().
| static int mpeg4_is_resync | ( | MpegEncContext * | s | ) | [inline, static] |
check if the next stuff is a resync marker or the end.
Definition at line 115 of file mpeg4videodec.c.
Referenced by mpeg4_decode_mb(), and mpeg4_decode_partitioned_mb().
Definition at line 40 of file mpeg4videodec.c.
Definition at line 40 of file mpeg4videodec.c.
Initial value:
{
.name = "mpeg4",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_MPEG4,
.priv_data_size = sizeof(MpegEncContext),
.init = decode_init,
.close = ff_h263_decode_end,
.decode = ff_h263_decode_frame,
.capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 |
CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY |
CODEC_CAP_FRAME_THREADS,
.flush = ff_mpeg_flush,
.max_lowres = 3,
.long_name = NULL_IF_CONFIG_SMALL("MPEG-4 part 2"),
.pix_fmts = ff_hwaccel_pixfmt_list_420,
.profiles = NULL_IF_CONFIG_SMALL(mpeg4_video_profiles),
.update_thread_context = ONLY_IF_THREADS_ENABLED(ff_mpeg_update_thread_context),
.priv_class = &mpeg4_class,
}
Definition at line 2341 of file mpeg4videodec.c.
const int mb_type_b_map[4] [static] |
Initial value:
{
MB_TYPE_DIRECT2 | MB_TYPE_L0L1,
MB_TYPE_L0L1 | MB_TYPE_16x16,
MB_TYPE_L1 | MB_TYPE_16x16,
MB_TYPE_L0 | MB_TYPE_16x16,
}
Definition at line 44 of file mpeg4videodec.c.
Referenced by mpeg4_decode_mb().
VLC mb_type_b_vlc [static] |
Definition at line 42 of file mpeg4videodec.c.
const AVClass mpeg4_class [static] |
Initial value:
{
"MPEG4 Video Decoder",
av_default_item_name,
mpeg4_options,
LIBAVUTIL_VERSION_INT,
}
Definition at line 2327 of file mpeg4videodec.c.
const AVOption mpeg4_options[] [static] |
Initial value:
{
{"quarter_sample", "1/4 subpel MC", 0x42, FF_OPT_TYPE_INT, {.dbl = 0}, 0, 1, 0},
{"divx_packed", "divx style packed b frames", 0x42, FF_OPT_TYPE_INT, {.dbl = 0}, 0, 1, 0},
{NULL}
}
Definition at line 2321 of file mpeg4videodec.c.
const AVClass mpeg4_vdpau_class [static] |
Initial value:
{
"MPEG4 Video VDPAU Decoder",
av_default_item_name,
mpeg4_options,
LIBAVUTIL_VERSION_INT,
}
Definition at line 2334 of file mpeg4videodec.c.
const AVProfile mpeg4_video_profiles[] [static] |
Initial value:
{
{ FF_PROFILE_MPEG4_SIMPLE, "Simple Profile" },
{ FF_PROFILE_MPEG4_SIMPLE_SCALABLE, "Simple Scalable Profile" },
{ FF_PROFILE_MPEG4_CORE, "Core Profile" },
{ FF_PROFILE_MPEG4_MAIN, "Main Profile" },
{ FF_PROFILE_MPEG4_N_BIT, "N-bit Profile" },
{ FF_PROFILE_MPEG4_SCALABLE_TEXTURE, "Scalable Texture Profile" },
{ FF_PROFILE_MPEG4_SIMPLE_FACE_ANIMATION, "Simple Face Animation Profile" },
{ FF_PROFILE_MPEG4_BASIC_ANIMATED_TEXTURE, "Basic Animated Texture Profile" },
{ FF_PROFILE_MPEG4_HYBRID, "Hybrid Profile" },
{ FF_PROFILE_MPEG4_ADVANCED_REAL_TIME, "Advanced Real Time Simple Profile" },
{ FF_PROFILE_MPEG4_CORE_SCALABLE, "Code Scalable Profile" },
{ FF_PROFILE_MPEG4_ADVANCED_CODING, "Advanced Coding Profile" },
{ FF_PROFILE_MPEG4_ADVANCED_CORE, "Advanced Core Profile" },
{ FF_PROFILE_MPEG4_ADVANCED_SCALABLE_TEXTURE, "Advanced Scalable Texture Profile" },
{ FF_PROFILE_MPEG4_SIMPLE_STUDIO, "Simple Studio Profile" },
{ FF_PROFILE_MPEG4_ADVANCED_SIMPLE, "Advanced Simple Profile" },
{ FF_PROFILE_UNKNOWN },
}
Definition at line 2301 of file mpeg4videodec.c.
VLC sprite_trajectory [static] |
Definition at line 41 of file mpeg4videodec.c.
1.5.8