FFmpeg: libavcodec/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.

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	ADV_SIMPLE_VO_TYPE 17

#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	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.

void	ff_set_mpeg4_time (MpegEncContext *s)

void	ff_mpeg4_encode_picture_header (MpegEncContext *s, int picture_number)

int	ff_mpeg4_decode_picture_header (MpegEncContext s, GetBitContext gb)
	Decode mpeg4 headers.

void	ff_mpeg4_encode_video_packet_header (MpegEncContext *s)

void	ff_mpeg4_clean_buffers (MpegEncContext *s)

void	ff_mpeg4_stuffing (PutBitContext *pbc)
	add mpeg4 stuffing bits (01...1)

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 mpeg4

int	ff_mpeg4_decode_partitions (MpegEncContext *s)
	Decode the first and second partition.

int	ff_mpeg4_get_video_packet_prefix_length (MpegEncContext *s)

int	ff_mpeg4_decode_video_packet_header (MpegEncContext *s)
	Decode the next video packet.

void	ff_mpeg4_init_direct_mv (MpegEncContext *s)

void	ff_mpeg4videodec_static_init (void)

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.

Variables
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]

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 32 of file mpeg4video.h.

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

#define BIN_SHAPE 1

Definition at line 33 of file mpeg4video.h.

#define BIN_ONLY_SHAPE 2

Definition at line 34 of file mpeg4video.h.

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

#define GRAY_SHAPE 3

Definition at line 35 of file mpeg4video.h.

Referenced by decode_vol_header().

#define SIMPLE_VO_TYPE 1

Definition at line 37 of file mpeg4video.h.

Referenced by mpeg4_encode_vol_header().

#define CORE_VO_TYPE 3

Definition at line 38 of file mpeg4video.h.

#define MAIN_VO_TYPE 4

Definition at line 39 of file mpeg4video.h.

#define NBIT_VO_TYPE 5

Definition at line 40 of file mpeg4video.h.

#define ARTS_VO_TYPE 10

Definition at line 41 of file mpeg4video.h.

#define ACE_VO_TYPE 12

Definition at line 42 of file mpeg4video.h.

#define ADV_SIMPLE_VO_TYPE 17

Definition at line 43 of file mpeg4video.h.

Referenced by mpeg4_encode_vol_header().

#define EXTENDED_PAR 15

Definition at line 46 of file mpeg4video.h.

#define STATIC_SPRITE 1

Definition at line 49 of file mpeg4video.h.

Referenced by decode_vol_header(), and decode_vop_header().

#define GMC_SPRITE 2

Definition at line 50 of file mpeg4video.h.

Referenced by decode_vol_header(), decode_vop_header(), ff_mpeg4_decode_video_packet_header(), ff_mpeg4_encode_picture_header(), mpeg4_decode_mb(), mpeg4_decode_partition_a(), and mpeg4_decode_partitioned_mb().

#define MOTION_MARKER 0x1F001

Definition at line 52 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 53 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 55 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 56 of file mpeg4video.h.

Referenced by ff_mpeg4_decode_picture_header().

#define GOP_STARTCODE 0x1B3

Definition at line 57 of file mpeg4video.h.

Referenced by ff_mpeg4_decode_picture_header(), and mpeg4_encode_gop_header().

#define VISUAL_OBJ_STARTCODE 0x1B5

Definition at line 58 of file mpeg4video.h.

Referenced by mpeg4_encode_visual_object_header().

#define VOP_STARTCODE 0x1B6

Definition at line 59 of file mpeg4video.h.

Referenced by ff_mpeg4_decode_picture_header(), and ff_mpeg4_encode_picture_header().

#define IS_3IV1 0

Definition at line 121 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 472 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

n	block index (0-3 are luma, 4-5 are chroma)
dir	the ac prediction direction

Definition at line 58 of file mpeg4videodec.c.

Referenced by ff_msmpeg4_decode_block(), and mpeg4_decode_block().

void ff_set_mpeg4_time ( MpegEncContext * s )

Definition at line 857 of file mpeg4videoenc.c.

Referenced by encode_picture().

void ff_mpeg4_encode_picture_header	(	MpegEncContext *	s,
		int	picture_number
	)

Definition at line 1044 of file mpeg4videoenc.c.

Referenced by encode_picture().

int ff_mpeg4_decode_picture_header	(	MpegEncContext *	s,
		GetBitContext *	gb
	)

Decode mpeg4 headers.

Returns: <0 if no VOP found (or a damaged one) FRAME_SKIPPED if a not coded VOP is found 0 if a VOP is found

Definition at line 2188 of file mpeg4videodec.c.

Referenced by av_mpeg4_decode_header(), and ff_h263_decode_frame().

void ff_mpeg4_encode_video_packet_header ( MpegEncContext * s )

Definition at line 1326 of file mpeg4videoenc.c.

Referenced by encode_thread().

void ff_mpeg4_clean_buffers ( MpegEncContext * s )

Definition at line 43 of file mpeg4video.c.

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

void ff_mpeg4_stuffing ( PutBitContext * pbc )

add mpeg4 stuffing bits (01...1)

Definition at line 848 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 1286 of file mpeg4videoenc.c.

Referenced by encode_thread().

void ff_mpeg4_merge_partitions ( MpegEncContext * s )

Definition at line 1299 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 mpeg4

Definition at line 205 of file mpeg4videoenc.c.

Referenced by estimate_qp().

int ff_mpeg4_decode_partitions ( MpegEncContext * s )

Decode the first and second partition.

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

Definition at line 807 of file mpeg4videodec.c.

Referenced by decode_slice().

int ff_mpeg4_get_video_packet_prefix_length ( MpegEncContext * s )

Definition at line 29 of file mpeg4video.c.

Referenced by ff_h263_find_resync_marker(), ff_mpeg4_decode_video_packet_header(), ff_mpeg4_encode_video_packet_header(), and mpeg4_is_resync().

int ff_mpeg4_decode_video_packet_header ( MpegEncContext * s )

Decode the next video packet.

Returns: <0 if something went wrong

Definition at line 374 of file mpeg4videodec.c.

Referenced by ff_h263_resync().

void ff_mpeg4_init_direct_mv ( MpegEncContext * s )

Definition at line 78 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 2277 of file mpeg4videodec.c.

Referenced by decode_init(), and mpeg4video_parse_init().

int ff_mpeg4_set_direct_mv	(	MpegEncContext *	s,
		int	mx,
		int	my
	)

Returns: the mb_type

Definition at line 121 of file mpeg4video.c.

Referenced by encode_thread(), ff_h263_decode_mb(), 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

n	block index (0-3 are luma, 4-5 are chroma)
dir_ptr	pointer to an integer where the prediction direction will be stored

Definition at line 132 of file mpeg4video.h.

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

Variable Documentation

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(), init_uni_dc_tab(), and mpeg4_encode_dc().

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(), init_uni_dc_tab(), and mpeg4_encode_dc().

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 decode_vol_header(), and ff_MPV_encode_init().

const int16_t ff_mpeg4_default_non_intra_matrix[64]

Definition at line 348 of file mpeg4data.h.

Referenced by decode_vol_header(), and ff_MPV_encode_init().

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().

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

Definition at line 27 of file mpeg4video.c.

Referenced by encode_init(), and ff_mpeg4videodec_static_init().