FFmpeg
Data Structures | Macros | Functions | Variables
mpeg4video.h File Reference
#include <stdint.h>
#include "get_bits.h"
#include "mpegvideo.h"
#include "rl.h"

Go to the source code of this file.

Data Structures

struct  Mpeg4DecContext
 

Macros

#define RECT_SHAPE   0
 
#define BIN_SHAPE   1
 
#define BIN_ONLY_SHAPE   2
 
#define GRAY_SHAPE   3
 
#define SIMPLE_VO_TYPE   1
 
#define CORE_VO_TYPE   3
 
#define MAIN_VO_TYPE   4
 
#define NBIT_VO_TYPE   5
 
#define ARTS_VO_TYPE   10
 
#define ACE_VO_TYPE   12
 
#define SIMPLE_STUDIO_VO_TYPE   14
 
#define CORE_STUDIO_VO_TYPE   15
 
#define ADV_SIMPLE_VO_TYPE   17
 
#define VOT_VIDEO_ID   1
 
#define VOT_STILL_TEXTURE_ID   2
 
#define EXTENDED_PAR   15
 
#define STATIC_SPRITE   1
 
#define GMC_SPRITE   2
 
#define MOTION_MARKER   0x1F001
 
#define DC_MARKER   0x6B001
 
#define VOS_STARTCODE   0x1B0
 
#define USER_DATA_STARTCODE   0x1B2
 
#define GOP_STARTCODE   0x1B3
 
#define VISUAL_OBJ_STARTCODE   0x1B5
 
#define VOP_STARTCODE   0x1B6
 
#define SLICE_STARTCODE   0x1B7
 
#define EXT_STARTCODE   0x1B8
 
#define QUANT_MATRIX_EXT_ID   0x3
 
#define MAX_NVOP_SIZE   19
 
#define IS_3IV1   0
 

Functions

void ff_mpeg4_encode_mb (MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y)
 
void ff_mpeg4_pred_ac (MpegEncContext *s, int16_t *block, int n, int dir)
 Predict the ac. More...
 
void ff_set_mpeg4_time (MpegEncContext *s)
 
int ff_mpeg4_encode_picture_header (MpegEncContext *s, int picture_number)
 
int ff_mpeg4_decode_picture_header (Mpeg4DecContext *ctx, GetBitContext *gb, int header)
 Decode MPEG-4 headers. More...
 
void ff_mpeg4_encode_video_packet_header (MpegEncContext *s)
 
void ff_mpeg4_clean_buffers (MpegEncContext *s)
 
void ff_mpeg4_stuffing (PutBitContext *pbc)
 add MPEG-4 stuffing bits (01...1) More...
 
void ff_mpeg4_init_partitions (MpegEncContext *s)
 
void ff_mpeg4_merge_partitions (MpegEncContext *s)
 
void ff_clean_mpeg4_qscales (MpegEncContext *s)
 modify mb_type & qscale so that encoding is actually possible in MPEG-4 More...
 
int ff_mpeg4_decode_partitions (Mpeg4DecContext *ctx)
 Decode the first and second partition. More...
 
int ff_mpeg4_get_video_packet_prefix_length (MpegEncContext *s)
 
int ff_mpeg4_decode_video_packet_header (Mpeg4DecContext *ctx)
 Decode the next video packet. More...
 
int ff_mpeg4_decode_studio_slice_header (Mpeg4DecContext *ctx)
 Decode the next video packet. More...
 
void ff_mpeg4_init_direct_mv (MpegEncContext *s)
 
void ff_mpeg4videodec_static_init (void)
 
int ff_mpeg4_workaround_bugs (AVCodecContext *avctx)
 
int ff_mpeg4_frame_end (AVCodecContext *avctx, const uint8_t *buf, int buf_size)
 
int ff_mpeg4_set_direct_mv (MpegEncContext *s, int mx, int my)
 
static int ff_mpeg4_pred_dc (MpegEncContext *s, int n, int level, int *dir_ptr, int encoding)
 Predict the dc. More...
 

Variables

static const uint8_t mpeg4_block_count [4] = {0, 6, 8, 12}
 
const uint8_t ff_mpeg4_DCtab_lum [13][2]
 
const uint8_t ff_mpeg4_DCtab_chrom [13][2]
 
const uint16_t ff_mpeg4_intra_vlc [103][2]
 
const int8_t ff_mpeg4_intra_level [102]
 
const int8_t ff_mpeg4_intra_run [102]
 
RLTable ff_mpeg4_rl_intra
 
RLTable ff_rvlc_rl_inter
 
RLTable ff_rvlc_rl_intra
 
const uint16_t ff_sprite_trajectory_tab [15][2]
 
const uint8_t ff_mb_type_b_tab [4][2]
 
const int16_t ff_mpeg4_default_intra_matrix [64]
 
const int16_t ff_mpeg4_default_non_intra_matrix [64]
 
const uint8_t ff_mpeg4_y_dc_scale_table [32]
 
const uint8_t ff_mpeg4_c_dc_scale_table [32]
 
const uint16_t ff_mpeg4_resync_prefix [8]
 
const uint8_t ff_mpeg4_dc_threshold [8]
 
const uint16_t ff_mpeg4_studio_dc_luma [19][2]
 
const uint16_t ff_mpeg4_studio_dc_chroma [19][2]
 
const uint16_t ff_mpeg4_studio_intra [12][22][2]
 
uint8_t ff_mpeg4_static_rl_table_store [3][2][2 *MAX_RUN+MAX_LEVEL+3]
 

Macro Definition Documentation

#define RECT_SHAPE   0

Definition at line 33 of file mpeg4video.h.

Referenced by decode_studio_vol_header(), decode_vol_header(), decode_vop_header(), ff_mpeg4_decode_video_packet_header(), and mpeg4_encode_vol_header().

#define BIN_SHAPE   1

Definition at line 34 of file mpeg4video.h.

#define BIN_ONLY_SHAPE   2

Definition at line 35 of file mpeg4video.h.

Referenced by decode_studio_vol_header(), decode_studio_vop_header(), decode_vol_header(), decode_vop_header(), ff_mpeg4_decode_studio_slice_header(), and ff_mpeg4_decode_video_packet_header().

#define GRAY_SHAPE   3

Definition at line 36 of file mpeg4video.h.

Referenced by decode_vol_header().

#define SIMPLE_VO_TYPE   1

Definition at line 38 of file mpeg4video.h.

Referenced by decode_vol_header(), and mpeg4_encode_vol_header().

#define CORE_VO_TYPE   3

Definition at line 39 of file mpeg4video.h.

#define MAIN_VO_TYPE   4

Definition at line 40 of file mpeg4video.h.

#define NBIT_VO_TYPE   5

Definition at line 41 of file mpeg4video.h.

#define ARTS_VO_TYPE   10

Definition at line 42 of file mpeg4video.h.

#define ACE_VO_TYPE   12

Definition at line 43 of file mpeg4video.h.

#define SIMPLE_STUDIO_VO_TYPE   14

Definition at line 44 of file mpeg4video.h.

Referenced by decode_vol_header().

#define CORE_STUDIO_VO_TYPE   15

Definition at line 45 of file mpeg4video.h.

Referenced by decode_vol_header().

#define ADV_SIMPLE_VO_TYPE   17

Definition at line 46 of file mpeg4video.h.

Referenced by decode_vol_header(), and mpeg4_encode_vol_header().

#define VOT_VIDEO_ID   1

Definition at line 48 of file mpeg4video.h.

Referenced by decode_studiovisualobject(), and mpeg4_decode_visual_object().

#define VOT_STILL_TEXTURE_ID   2

Definition at line 49 of file mpeg4video.h.

Referenced by mpeg4_decode_visual_object().

#define EXTENDED_PAR   15

Definition at line 52 of file mpeg4video.h.

#define STATIC_SPRITE   1

Definition at line 55 of file mpeg4video.h.

Referenced by decode_vol_header(), and decode_vop_header().

#define GMC_SPRITE   2

Definition at line 56 of file mpeg4video.h.

Referenced by decode_vol_header(), decode_vop_header(), ff_mpeg4_decode_video_packet_header(), mpeg4_decode_mb(), mpeg4_decode_partition_a(), mpeg4_decode_partitioned_mb(), and nvdec_mpeg4_start_frame().

#define MOTION_MARKER   0x1F001

Definition at line 58 of file mpeg4video.h.

Referenced by ff_mpeg4_decode_partitions(), ff_mpeg4_merge_partitions(), and mpeg4_decode_partition_a().

#define DC_MARKER   0x6B001

Definition at line 59 of file mpeg4video.h.

Referenced by ff_mpeg4_decode_partitions(), ff_mpeg4_merge_partitions(), and mpeg4_decode_partition_a().

#define VOS_STARTCODE   0x1B0

Definition at line 61 of file mpeg4video.h.

Referenced by ff_mpeg4_decode_picture_header(), and mpeg4_encode_visual_object_header().

#define USER_DATA_STARTCODE   0x1B2

Definition at line 62 of file mpeg4video.h.

Referenced by extension_and_user_data(), ff_mpeg4_decode_picture_header(), and scan_buffer().

#define GOP_STARTCODE   0x1B3

Definition at line 63 of file mpeg4video.h.

Referenced by ff_mpeg4_decode_picture_header(), and mpeg4_encode_gop_header().

#define VISUAL_OBJ_STARTCODE   0x1B5

Definition at line 64 of file mpeg4video.h.

Referenced by ff_mpeg4_decode_picture_header(), and mpeg4_encode_visual_object_header().

#define VOP_STARTCODE   0x1B6

Definition at line 65 of file mpeg4video.h.

Referenced by ff_mpeg4_decode_picture_header(), ff_mpeg4_encode_picture_header(), ff_mpeg4_find_frame_end(), and scan_buffer().

#define SLICE_STARTCODE   0x1B7

Definition at line 66 of file mpeg4video.h.

Referenced by ff_mpeg4_find_frame_end().

#define EXT_STARTCODE   0x1B8

Definition at line 67 of file mpeg4video.h.

Referenced by extension_and_user_data(), and ff_mpeg4_find_frame_end().

#define QUANT_MATRIX_EXT_ID   0x3

Definition at line 69 of file mpeg4video.h.

Referenced by extension_and_user_data().

#define MAX_NVOP_SIZE   19

Definition at line 72 of file mpeg4video.h.

Referenced by ff_h263_decode_frame(), and mpeg4_unpack_bframes_filter().

#define IS_3IV1   0

Definition at line 192 of file mpeg4video.h.

Referenced by decode_vop_header(), ff_mpeg4_pred_dc(), mpeg4_decode_block(), and mpeg4_decode_dc().

Function Documentation

void ff_mpeg4_encode_mb ( MpegEncContext *  s,
int16_t  block[6][64],
int  motion_x,
int  motion_y 
)

Definition at line 476 of file mpeg4videoenc.c.

Referenced by encode_mb_internal().

void ff_mpeg4_pred_ac ( MpegEncContext *  s,
int16_t *  block,
int  n,
int  dir 
)

Predict the ac.

Parameters
nblock index (0-3 are luma, 4-5 are chroma)
dirthe ac prediction direction

Definition at line 69 of file mpeg4videodec.c.

Referenced by ff_msmpeg4_decode_block(), and mpeg4_decode_block().

void ff_set_mpeg4_time ( MpegEncContext *  s)

Definition at line 874 of file mpeg4videoenc.c.

Referenced by encode_picture().

int ff_mpeg4_encode_picture_header ( MpegEncContext *  s,
int  picture_number 
)

Definition at line 1062 of file mpeg4videoenc.c.

Referenced by encode_picture().

int ff_mpeg4_decode_picture_header ( Mpeg4DecContext *  ctx,
GetBitContext *  gb,
int  header 
)

Decode MPEG-4 headers.

Parameters
headerIf set the absence of a VOP is not treated as error; otherwise, it is treated as such.
Returns
<0 if an error occurred FRAME_SKIPPED if a not coded VOP is found 0 else

Definition at line 3225 of file mpeg4videodec.c.

Referenced by ff_h263_decode_frame(), and mpeg4_decode_header().

void ff_mpeg4_encode_video_packet_header ( MpegEncContext *  s)

Definition at line 1362 of file mpeg4videoenc.c.

Referenced by encode_thread().

void ff_mpeg4_clean_buffers ( MpegEncContext *  s)

Definition at line 45 of file mpeg4video.c.

Referenced by encode_thread(), ff_h263_decode_frame(), and ff_msmpeg4_handle_slices().

void ff_mpeg4_stuffing ( PutBitContext *  pbc)

add MPEG-4 stuffing bits (01...1)

Definition at line 864 of file mpeg4videoenc.c.

Referenced by mpeg4_encode_gop_header(), mpeg4_encode_visual_object_header(), mpeg4_encode_vol_header(), and write_slice_end().

void ff_mpeg4_init_partitions ( MpegEncContext *  s)

Definition at line 1323 of file mpeg4videoenc.c.

Referenced by encode_thread().

void ff_mpeg4_merge_partitions ( MpegEncContext *  s)

Definition at line 1336 of file mpeg4videoenc.c.

Referenced by write_slice_end().

void ff_clean_mpeg4_qscales ( MpegEncContext *  s)

modify mb_type & qscale so that encoding is actually possible in MPEG-4

Definition at line 214 of file mpeg4videoenc.c.

Referenced by estimate_qp().

int ff_mpeg4_decode_partitions ( Mpeg4DecContext *  ctx)

Decode the first and second partition.

Returns
<0 if error (and sets error type in the error_status_table)

Definition at line 977 of file mpeg4videodec.c.

Referenced by decode_slice().

int ff_mpeg4_get_video_packet_prefix_length ( MpegEncContext *  s)

Definition at line 30 of file mpeg4video.c.

Referenced by ff_mpeg4_decode_video_packet_header(), ff_mpeg4_encode_video_packet_header(), and mpeg4_is_resync().

int ff_mpeg4_decode_video_packet_header ( Mpeg4DecContext *  ctx)

Decode the next video packet.

Returns
<0 if something went wrong

Definition at line 447 of file mpeg4videodec.c.

Referenced by ff_h263_resync().

int ff_mpeg4_decode_studio_slice_header ( Mpeg4DecContext *  ctx)

Decode the next video packet.

Returns
<0 if something went wrong

Definition at line 548 of file mpeg4videodec.c.

Referenced by decode_slice().

void ff_mpeg4_init_direct_mv ( MpegEncContext *  s)

Definition at line 71 of file mpeg4video.c.

Referenced by decode_vop_header(), ff_h263_decode_picture_header(), ff_set_mpeg4_time(), and rv20_decode_picture_header().

void ff_mpeg4videodec_static_init ( void  )

Definition at line 3381 of file mpeg4videodec.c.

Referenced by decode_init(), and mpeg4video_parse_init().

int ff_mpeg4_workaround_bugs ( AVCodecContext *  avctx)

Definition at line 2579 of file mpeg4videodec.c.

Referenced by ff_h263_decode_frame().

int ff_mpeg4_frame_end ( AVCodecContext *  avctx,
const uint8_t *  buf,
int  buf_size 
)

Definition at line 3407 of file mpeg4videodec.c.

Referenced by ff_h263_decode_frame().

int ff_mpeg4_set_direct_mv ( MpegEncContext *  s,
int  mx,
int  my 
)
Returns
the mb_type

Definition at line 117 of file mpeg4video.c.

Referenced by encode_thread(), and mpeg4_decode_mb().

static int ff_mpeg4_pred_dc ( MpegEncContext *  s,
int  n,
int  level,
int *  dir_ptr,
int  encoding 
)
inlinestatic

Predict the dc.

encoding quantized level -> quantized diff decoding quantized diff -> quantized level

Parameters
nblock index (0-3 are luma, 4-5 are chroma)
dir_ptrpointer to an integer where the prediction direction will be stored

Definition at line 202 of file mpeg4video.h.

Referenced by ff_mpeg4_encode_mb(), mpeg4_decode_block(), and mpeg4_decode_dc().

Variable Documentation

const uint8_t mpeg4_block_count[4] = {0, 6, 8, 12}
static

Definition at line 125 of file mpeg4video.h.

Referenced by mpeg4_decode_studio_mb().

const uint8_t ff_mpeg4_DCtab_lum[13][2]

Definition at line 35 of file mpeg4data.h.

Referenced by ff_mpeg4videodec_static_init(), init_h263_dc_for_msmpeg4(), and init_uni_dc_tab().

const uint8_t ff_mpeg4_DCtab_chrom[13][2]

Definition at line 41 of file mpeg4data.h.

Referenced by ff_mpeg4videodec_static_init(), init_h263_dc_for_msmpeg4(), and init_uni_dc_tab().

const uint16_t ff_mpeg4_intra_vlc[103][2]

Definition at line 47 of file mpeg4data.h.

const int8_t ff_mpeg4_intra_level[102]

Definition at line 77 of file mpeg4data.h.

const int8_t ff_mpeg4_intra_run[102]

Definition at line 93 of file mpeg4data.h.

RLTable ff_mpeg4_rl_intra

Definition at line 109 of file mpeg4data.h.

Referenced by encode_init(), ff_mpeg4videodec_static_init(), and mpeg4_decode_block().

RLTable ff_rvlc_rl_inter

Definition at line 214 of file mpeg4data.h.

Referenced by ff_mpeg4videodec_static_init(), and mpeg4_decode_block().

RLTable ff_rvlc_rl_intra

Definition at line 318 of file mpeg4data.h.

Referenced by ff_mpeg4videodec_static_init(), and mpeg4_decode_block().

const uint16_t ff_sprite_trajectory_tab[15][2]

Definition at line 326 of file mpeg4data.h.

Referenced by ff_mpeg4videodec_static_init().

const uint8_t ff_mb_type_b_tab[4][2]

Definition at line 332 of file mpeg4data.h.

Referenced by ff_mpeg4videodec_static_init().

const int16_t ff_mpeg4_default_intra_matrix[64]

Definition at line 337 of file mpeg4data.h.

Referenced by ff_mpv_encode_init(), and mpeg4_load_default_matrices().

const int16_t ff_mpeg4_default_non_intra_matrix[64]

Definition at line 348 of file mpeg4data.h.

Referenced by ff_mpv_encode_init(), and mpeg4_load_default_matrices().

const uint8_t ff_mpeg4_y_dc_scale_table[32]

Definition at line 359 of file mpeg4data.h.

Referenced by decode_vop_header(), encode_init(), and ff_msmpeg4_common_init().

const uint8_t ff_mpeg4_c_dc_scale_table[32]

Definition at line 363 of file mpeg4data.h.

Referenced by decode_vop_header(), encode_init(), and ff_msmpeg4_common_init().

const uint16_t ff_mpeg4_resync_prefix[8]

Definition at line 368 of file mpeg4data.h.

Referenced by mpeg4_is_resync().

const uint8_t ff_mpeg4_dc_threshold[8]

Definition at line 372 of file mpeg4data.h.

Referenced by decode_vop_header().

const uint16_t ff_mpeg4_studio_dc_luma[19][2]

Definition at line 377 of file mpeg4data.h.

Referenced by init_studio_vlcs().

const uint16_t ff_mpeg4_studio_dc_chroma[19][2]

Definition at line 385 of file mpeg4data.h.

Referenced by init_studio_vlcs().

const uint16_t ff_mpeg4_studio_intra[12][22][2]

Definition at line 393 of file mpeg4data.h.

Referenced by init_studio_vlcs().

uint8_t ff_mpeg4_static_rl_table_store[3][2][2 *MAX_RUN+MAX_LEVEL+3]

Definition at line 28 of file mpeg4video.c.

Referenced by encode_init(), and ff_mpeg4videodec_static_init().

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