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Defines | |
#define | SPRITE_TRAJ_VLC_BITS 6 |
#define | DC_VLC_BITS 9 |
#define | MB_TYPE_B_VLC_BITS 4 |
Functions | |
void | mpeg4_pred_ac (MpegEncContext *s, DCTELEM *block, int n, int dir) |
Predict the ac. | |
static int | mpeg4_is_resync (MpegEncContext *s) |
check if the next stuff is a resync marker or the end. | |
static void | mpeg4_decode_sprite_trajectory (MpegEncContext *s, GetBitContext *gb) |
int | mpeg4_decode_video_packet_header (MpegEncContext *s) |
Decode the next video packet. | |
static int | get_amv (MpegEncContext *s, int n) |
Get the average motion vector for a GMC MB. | |
static int | mpeg4_decode_dc (MpegEncContext *s, int n, int *dir_ptr) |
Decode the dc value. | |
static int | mpeg4_decode_partition_a (MpegEncContext *s) |
Decode first partition. | |
static int | mpeg4_decode_partition_b (MpegEncContext *s, int mb_count) |
decode second partition. | |
int | ff_mpeg4_decode_partitions (MpegEncContext *s) |
Decode the first and second partition. | |
static int | mpeg4_decode_block (MpegEncContext *s, DCTELEM *block, int n, int coded, int intra, int rvlc) |
Decode a block. | |
static int | mpeg4_decode_partitioned_mb (MpegEncContext *s, DCTELEM block[6][64]) |
decode partition C of one MB. | |
static int | mpeg4_decode_mb (MpegEncContext *s, DCTELEM block[6][64]) |
static int | mpeg4_decode_gop_header (MpegEncContext *s, GetBitContext *gb) |
static int | mpeg4_decode_profile_level (MpegEncContext *s, GetBitContext *gb) |
static int | decode_vol_header (MpegEncContext *s, GetBitContext *gb) |
static int | decode_user_data (MpegEncContext *s, GetBitContext *gb) |
Decode the user data stuff in the header. | |
static int | decode_vop_header (MpegEncContext *s, GetBitContext *gb) |
int | ff_mpeg4_decode_picture_header (MpegEncContext *s, GetBitContext *gb) |
Decode mpeg4 headers. | |
static av_cold int | decode_init (AVCodecContext *avctx) |
Variables | |
static VLC | dc_lum |
static VLC | dc_chrom |
static VLC | sprite_trajectory |
static VLC | mb_type_b_vlc |
static const int | mb_type_b_map [4] |
static const AVProfile | mpeg4_video_profiles [] |
AVCodec | ff_mpeg4_decoder |
#define DC_VLC_BITS 9 |
Definition at line 33 of file mpeg4videodec.c.
Referenced by decode_init(), and mpeg4_decode_dc().
#define MB_TYPE_B_VLC_BITS 4 |
Definition at line 34 of file mpeg4videodec.c.
Referenced by decode_init(), and mpeg4_decode_mb().
#define SPRITE_TRAJ_VLC_BITS 6 |
Definition at line 32 of file mpeg4videodec.c.
Referenced by decode_init(), and mpeg4_decode_sprite_trajectory().
static av_cold int decode_init | ( | AVCodecContext * | avctx | ) | [static] |
Definition at line 2191 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 1830 of file mpeg4videodec.c.
Referenced by ff_mpeg4_decode_picture_header().
static int decode_vol_header | ( | MpegEncContext * | s, |
GetBitContext * | gb | ||
) | [static] |
Definition at line 1520 of file mpeg4videodec.c.
Referenced by ff_mpeg4_decode_picture_header().
static int decode_vop_header | ( | MpegEncContext * | s, |
GetBitContext * | gb | ||
) | [static] |
Definition at line 1884 of file mpeg4videodec.c.
Referenced by ff_mpeg4_decode_picture_header().
int ff_mpeg4_decode_partitions | ( | MpegEncContext * | s | ) |
Decode the first and second partition.
Definition at line 790 of file mpeg4videodec.c.
Referenced by decode_slice().
int ff_mpeg4_decode_picture_header | ( | MpegEncContext * | s, |
GetBitContext * | gb | ||
) |
Decode mpeg4 headers.
Definition at line 2102 of file mpeg4videodec.c.
Referenced by av_mpeg4_decode_header(), and ff_h263_decode_frame().
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 446 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 843 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 493 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] |
Definition at line 1487 of file mpeg4videodec.c.
Referenced by ff_mpeg4_decode_picture_header().
static int mpeg4_decode_mb | ( | MpegEncContext * | s, |
DCTELEM | block[6][64] | ||
) | [static] |
Definition at line 1149 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 538 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 703 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 1067 of file mpeg4videodec.c.
Referenced by decode_vop_header().
static int mpeg4_decode_profile_level | ( | MpegEncContext * | s, |
GetBitContext * | gb | ||
) | [static] |
Definition at line 1504 of file mpeg4videodec.c.
Referenced by ff_mpeg4_decode_picture_header().
static void mpeg4_decode_sprite_trajectory | ( | MpegEncContext * | s, |
GetBitContext * | gb | ||
) | [static] |
Definition at line 155 of file mpeg4videodec.c.
Referenced by decode_vop_header(), and mpeg4_decode_video_packet_header().
int mpeg4_decode_video_packet_header | ( | MpegEncContext * | s | ) |
Decode the next video packet.
Definition at line 349 of file mpeg4videodec.c.
Referenced by ff_h263_resync().
static int mpeg4_is_resync | ( | MpegEncContext * | s | ) | [inline, static] |
check if the next stuff is a resync marker or the end.
Definition at line 112 of file mpeg4videodec.c.
Referenced by mpeg4_decode_mb(), and mpeg4_decode_partitioned_mb().
void 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 53 of file mpeg4videodec.c.
Referenced by ff_msmpeg4_decode_block(), and mpeg4_decode_block().
Definition at line 37 of file mpeg4videodec.c.
Definition at line 37 of file mpeg4videodec.c.
{ .name = "mpeg4", .type = AVMEDIA_TYPE_VIDEO, .id = 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) }
Definition at line 2256 of file mpeg4videodec.c.
const int mb_type_b_map[4] [static] |
{ 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 41 of file mpeg4videodec.c.
Referenced by mpeg4_decode_mb().
VLC mb_type_b_vlc [static] |
Definition at line 39 of file mpeg4videodec.c.
const AVProfile mpeg4_video_profiles[] [static] |
{ { 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" }, }
Definition at line 2237 of file mpeg4videodec.c.
VLC sprite_trajectory [static] |
Definition at line 38 of file mpeg4videodec.c.