libavcodec/h264.h File Reference

NAL_SLICE
NAL_DPA
NAL_DPB
NAL_DPC
NAL_IDR_SLICE
NAL_SEI
NAL_SPS
NAL_PPS
NAL_AUD
NAL_END_SEQUENCE
NAL_END_STREAM
NAL_FILLER_DATA
NAL_SPS_EXT
NAL_AUXILIARY_SLICE

Definition at line 97 of file h264.h.

enum MMCOOpcode

Memory management control operation opcode.

Enumerator:

MMCO_END
MMCO_SHORT2UNUSED
MMCO_LONG2UNUSED
MMCO_SHORT2LONG
MMCO_SET_MAX_LONG
MMCO_RESET
MMCO_LONG

Definition at line 220 of file h264.h.

enum SEI_PicStructType

pic_struct in picture timing SEI message

Enumerator:

SEI_PIC_STRUCT_FRAME	0: frame
SEI_PIC_STRUCT_TOP_FIELD	1: top field
SEI_PIC_STRUCT_BOTTOM_FIELD	2: bottom field
SEI_PIC_STRUCT_TOP_BOTTOM	3: top field, bottom field, in that order
SEI_PIC_STRUCT_BOTTOM_TOP	4: bottom field, top field, in that order
SEI_PIC_STRUCT_TOP_BOTTOM_TOP	5: top field, bottom field, top field repeated, in that order
SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM	6: bottom field, top field, bottom field repeated, in that order
SEI_PIC_STRUCT_FRAME_DOUBLING	7: frame doubling
SEI_PIC_STRUCT_FRAME_TRIPLING	8: frame tripling

Definition at line 127 of file h264.h.

enum SEI_Type

SEI message types.

Enumerator:

SEI_BUFFERING_PERIOD	buffering period (H.264, D.1.1)
SEI_TYPE_PIC_TIMING	picture timing
SEI_TYPE_USER_DATA_UNREGISTERED	unregistered user data
SEI_TYPE_RECOVERY_POINT	recovery point (frame # to decoder sync)

Definition at line 117 of file h264.h.

Function Documentation

const uint8_t* ff_h264_decode_nal	(	H264Context *	h,
		const uint8_t *	src,
		int *	dst_length,
		int *	consumed,
		int	length
	)

Decodes a network abstraction layer unit.

Parameters:

	consumed	is the number of bytes used as input
	length	is the length of the array
	dst_length	is the number of decoded bytes FIXME here or a decode rbsp tailing?

Returns:: decoded bytes, might be src+1 if no escapes

Definition at line 1363 of file h264.c.

Referenced by decode_nal_units(), and parse_nal_units().

int ff_h264_decode_picture_parameter_set	(	H264Context *	h,
		int	bit_length
	)

Decode PPS.

Definition at line 7255 of file h264.c.

Referenced by decode_nal_units(), and parse_nal_units().

int ff_h264_decode_rbsp_trailing	(	H264Context *	h,
		const uint8_t *	src
	)

identifies the exact end of the bitstream

Returns:: the length of the trailing, or 0 if damaged

Definition at line 1453 of file h264.c.

Referenced by decode_nal_units().

int ff_h264_decode_sei ( H264Context * h )

Decode SEI.

Definition at line 6906 of file h264.c.

Referenced by decode_nal_units(), and parse_nal_units().

int ff_h264_decode_seq_parameter_set ( H264Context * h )

Decode SPS.

Definition at line 7104 of file h264.c.

Referenced by decode_nal_units(), and parse_nal_units().


Data Structures
struct	SPS
	Sequence parameter set. More...
struct	PPS
	Picture parameter set. More...
struct	MMCO
	Memory management control operation. More...
struct	H264Context
	H264Context. More...
Defines
#define	interlaced_dct interlaced_dct_is_a_bad_name
#define	mb_intra mb_intra_is_not_initialized_see_mb_type
#define	LUMA_DC_BLOCK_INDEX 25
#define	CHROMA_DC_BLOCK_INDEX 26
#define	CHROMA_DC_COEFF_TOKEN_VLC_BITS 8
#define	COEFF_TOKEN_VLC_BITS 8
#define	TOTAL_ZEROS_VLC_BITS 9
#define	CHROMA_DC_TOTAL_ZEROS_VLC_BITS 3
#define	RUN_VLC_BITS 3
#define	RUN7_VLC_BITS 6
#define	MAX_SPS_COUNT 32
#define	MAX_PPS_COUNT 256
#define	MAX_MMCO_COUNT 66
#define	MAX_DELAYED_PIC_COUNT 16
#define	ALLOW_INTERLACE
#define	ALLOW_NOCHROMA
#define	MAX_SLICES 16
	The maximum number of slices supported by the decoder.
#define	MB_MBAFF h->mb_mbaff
#define	MB_FIELD h->mb_field_decoding_flag
#define	FRAME_MBAFF h->mb_aff_frame
#define	FIELD_PICTURE (s->picture_structure != PICT_FRAME)
#define	FIELD_OR_MBAFF_PICTURE (FRAME_MBAFF \|\| FIELD_PICTURE)
#define	CHROMA h->sps.chroma_format_idc
#define	EXTENDED_SAR 255
#define	MB_TYPE_REF0 MB_TYPE_ACPRED
#define	MB_TYPE_8x8DCT 0x01000000
#define	IS_REF0(a) ((a) & MB_TYPE_REF0)
#define	IS_8x8DCT(a) ((a) & MB_TYPE_8x8DCT)
#define	LIST_NOT_USED -1
#define	PART_NOT_AVAILABLE -2
Enumerations
enum	{ NAL_SLICE = 1, NAL_DPA, NAL_DPB, NAL_DPC, NAL_IDR_SLICE, NAL_SEI, NAL_SPS, NAL_PPS, NAL_AUD, NAL_END_SEQUENCE, NAL_END_STREAM, NAL_FILLER_DATA, NAL_SPS_EXT, NAL_AUXILIARY_SLICE = 19 }
enum	SEI_Type { SEI_BUFFERING_PERIOD = 0, SEI_TYPE_PIC_TIMING = 1, SEI_TYPE_USER_DATA_UNREGISTERED = 5, SEI_TYPE_RECOVERY_POINT = 6 }
	SEI message types. More...
enum	SEI_PicStructType { SEI_PIC_STRUCT_FRAME = 0, SEI_PIC_STRUCT_TOP_FIELD = 1, SEI_PIC_STRUCT_BOTTOM_FIELD = 2, SEI_PIC_STRUCT_TOP_BOTTOM = 3, SEI_PIC_STRUCT_BOTTOM_TOP = 4, SEI_PIC_STRUCT_TOP_BOTTOM_TOP = 5, SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM = 6, SEI_PIC_STRUCT_FRAME_DOUBLING = 7, SEI_PIC_STRUCT_FRAME_TRIPLING = 8 }
	pic_struct in picture timing SEI message More...
enum	MMCOOpcode { MMCO_END = 0, MMCO_SHORT2UNUSED, MMCO_LONG2UNUSED, MMCO_SHORT2LONG, MMCO_SET_MAX_LONG, MMCO_RESET, MMCO_LONG }
	Memory management control operation opcode. More...
Functions
int	ff_h264_decode_sei (H264Context *h)
	Decode SEI.
int	ff_h264_decode_seq_parameter_set (H264Context *h)
	Decode SPS.
int	ff_h264_decode_picture_parameter_set (H264Context *h, int bit_length)
	Decode PPS.
const uint8_t *	ff_h264_decode_nal (H264Context h, const uint8_t src, int dst_length, int consumed, int length)
	Decodes a network abstraction layer unit.
int	ff_h264_decode_rbsp_trailing (H264Context h, const uint8_t src)
	identifies the exact end of the bitstream