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 110 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 239 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 140 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 130 of file h264.h.

Function Documentation

void ff_generate_sliding_window_mmcos ( H264Context * h )

Definition at line 483 of file h264_refs.c.

Referenced by decode_slice_header(), and ff_h264_decode_ref_pic_marking().

int ff_h264_alloc_tables ( H264Context * h )

Allocate tables.

needs width/height

Definition at line 876 of file h264.c.

Referenced by decode_slice_header(), decode_update_thread_context(), and svq3_decode_init().

int ff_h264_check_intra4x4_pred_mode ( H264Context * h )

Check if the top & left blocks are available if needed & change the dc mode so it only uses the available blocks.

Definition at line 87 of file h264.c.

Referenced by ff_h264_decode_mb_cabac(), ff_h264_decode_mb_cavlc(), and svq3_decode_mb().

int ff_h264_check_intra_pred_mode	(	H264Context *	h,
		int	mode,
		int	is_chroma
	)

Check if the top & left blocks are available if needed & change the dc mode so it only uses the available blocks.

Definition at line 135 of file h264.c.

Referenced by ff_h264_decode_mb_cabac(), ff_h264_decode_mb_cavlc(), and svq3_decode_mb().

int ff_h264_decode_extradata	(	H264Context *	h,
		const uint8_t *	buf,
		int	size
	)

Definition at line 1006 of file h264.c.

Referenced by decode_frame(), ff_h264_decode_init(), and h264_parse().

av_cold int ff_h264_decode_init ( AVCodecContext * avctx )

Definition at line 1063 of file h264.c.

Referenced by svq3_decode_init().

av_cold void ff_h264_decode_init_vlc ( void )

Definition at line 326 of file h264_cavlc.c.

Referenced by ff_h264_decode_init().

int ff_h264_decode_mb_cabac ( H264Context * h )

Decode a CABAC coded macroblock.

Returns:: 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error

Decode a CABAC coded macroblock.

Returns:: 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR if an error is noticed

Definition at line 1863 of file h264_cabac.c.

Referenced by decode_slice().

int ff_h264_decode_mb_cavlc ( H264Context * h )

Decode a macroblock.

Returns:: 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error

Definition at line 695 of file h264_cavlc.c.

Referenced by decode_slice().

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

Decode 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 177 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 546 of file h264_ps.c.

Referenced by decode_nal_units(), and parse_nal_units().

int ff_h264_decode_ref_pic_list_reordering ( H264Context * h )

Definition at line 188 of file h264_refs.c.

Referenced by decode_slice_header().

int ff_h264_decode_ref_pic_marking	(	H264Context *	h,
		GetBitContext *	gb
	)

Definition at line 668 of file h264_refs.c.

Referenced by decode_slice_header().

int ff_h264_decode_sei ( H264Context * h )

Decode SEI.

Definition at line 166 of file h264_sei.c.

Referenced by decode_nal_units(), and parse_nal_units().

int ff_h264_decode_seq_parameter_set ( H264Context * h )

Decode SPS.

Definition at line 330 of file h264_ps.c.

Referenced by decode_nal_units(), and parse_nal_units().

void ff_h264_direct_dist_scale_factor ( H264Context *const h )

Definition at line 52 of file h264_direct.c.

Referenced by decode_slice_header().

void ff_h264_direct_ref_list_init ( H264Context *const h )

Definition at line 103 of file h264_direct.c.

Referenced by decode_slice_header().

int ff_h264_execute_ref_pic_marking	(	H264Context *	h,
		MMCO *	mmco,
		int	mmco_count
	)

Execute the reference picture marking (memory management control operations).

Definition at line 501 of file h264_refs.c.

Referenced by decode_slice_header(), decode_update_thread_context(), and field_end().

int ff_h264_fill_default_ref_list ( H264Context * h )

Fill the default_ref_list.

Definition at line 109 of file h264_refs.c.

Referenced by decode_slice_header().

void ff_h264_fill_mbaff_ref_list ( H264Context * h )

Definition at line 302 of file h264_refs.c.

Referenced by decode_slice_header().

void ff_h264_filter_mb	(	H264Context *	h,
		int	mb_x,
		int	mb_y,
		uint8_t *	img_y,
		uint8_t *	img_cb,
		uint8_t *	img_cr,
		unsigned int	linesize,
		unsigned int	uvlinesize
	)

Definition at line 706 of file h264_loopfilter.c.

Referenced by ff_h264_filter_mb_fast(), and loop_filter().

void ff_h264_filter_mb_fast	(	H264Context *	h,
		int	mb_x,
		int	mb_y,
		uint8_t *	img_y,
		uint8_t *	img_cb,
		uint8_t *	img_cr,
		unsigned int	linesize,
		unsigned int	uvlinesize
	)

Definition at line 417 of file h264_loopfilter.c.

Referenced by loop_filter().

int ff_h264_frame_start ( H264Context * h )

Definition at line 1275 of file h264.c.

Referenced by decode_slice_header(), and svq3_decode_frame().

av_cold void ff_h264_free_context ( H264Context * h )

Free any data that may have been allocated in the H264 context like SPS, PPS etc.

Definition at line 4155 of file h264.c.

Referenced by close(), ff_h264_decode_init(), h264_decode_end(), and svq3_decode_end().

int ff_h264_get_profile ( SPS * sps )

compute profile from sps

Parameters:

sps

SPS

Returns:: profile as defined by FF_PROFILE_H264_*

Definition at line 2326 of file h264.c.

Referenced by decode_slice_header(), and parse_nal_units().

int ff_h264_get_slice_type ( const H264Context * h )

Reconstruct bitstream slice_type.

Definition at line 3154 of file h264.c.

Referenced by decode_slice(), and fill_slice_long().

void ff_h264_hl_decode_mb ( H264Context * h )

Definition at line 1930 of file h264.c.

Referenced by decode_mb(), decode_slice(), and svq3_decode_frame().

void ff_h264_init_cabac_states ( H264Context * h )

Definition at line 1261 of file h264_cabac.c.

Referenced by decode_slice().

void ff_h264_pred_direct_motion	(	H264Context *const	h,
		int *	mb_type
	)

Definition at line 625 of file h264_direct.c.

Referenced by decode_mb_skip(), ff_h264_decode_mb_cabac(), and ff_h264_decode_mb_cavlc().

void ff_h264_remove_all_refs ( H264Context * h )

Definition at line 433 of file h264_refs.c.

Referenced by h264_decode_end(), and idr().

void ff_h264_reset_sei ( H264Context * h )

Reset SEI values at the beginning of the frame.

Parameters:

h

H.264 context.

Definition at line 40 of file h264_sei.c.

Referenced by decode_nal_units(), ff_h264_decode_init(), and flush_dpb().

static av_always_inline int get_chroma_qp	(	H264Context *	h,
		int	t,
		int	qscale
	)			`[static]`

Get the chroma qp.

Definition at line 796 of file h264.h.

Referenced by decode_slice_header(), ff_h264_decode_mb_cabac(), ff_h264_decode_mb_cavlc(), ff_h264_filter_mb(), filter_mb_dir(), h264_filter_mb_fast_internal(), and loop_filter().

static av_always_inline int get_dct8x8_allowed ( H264Context * h ) [static]

Definition at line 915 of file h264.h.

Referenced by ff_h264_decode_mb_cabac(), and ff_h264_decode_mb_cavlc().

static av_always_inline uint32_t pack16to32	(	int	a,
		int	b
	)			`[static]`

Definition at line 775 of file h264.h.

Referenced by decode_mb(), ff_h264_decode_mb_cabac(), ff_h264_decode_mb_cavlc(), fill_filter_caches_inter(), pred_pskip_motion(), pred_spatial_direct_motion(), pred_temp_direct_motion(), and svq3_mc_dir().

static av_always_inline uint16_t pack8to16	(	int	a,
		int	b
	)			`[static]`

Definition at line 784 of file h264.h.

Referenced by ff_h264_decode_mb_cabac().

static av_always_inline int pred_intra_mode	(	H264Context *	h,
		int	n
	)			`[static]`

Get the predicted intra4x4 prediction mode.

Definition at line 804 of file h264.h.

Referenced by ff_h264_decode_mb_cabac(), and ff_h264_decode_mb_cavlc().

static av_always_inline void write_back_intra_pred_mode ( H264Context * h ) [static]

Definition at line 819 of file h264.h.

Referenced by ff_h264_decode_mb_cabac(), ff_h264_decode_mb_cavlc(), and svq3_decode_mb().

static av_always_inline void write_back_motion	(	H264Context *	h,
		int	mb_type
	)			`[static]`

Definition at line 889 of file h264.h.

Referenced by decode_mb_skip(), ff_h264_decode_mb_cabac(), and ff_h264_decode_mb_cavlc().

static av_always_inline void write_back_motion_list	(	H264Context *	h,
		MpegEncContext *const	s,
		int	b_stride,
		int	b_xy,
		int	b8_xy,
		int	mb_type,
		int	list
	)			`[static]`

Definition at line 853 of file h264.h.

Referenced by write_back_motion().

static av_always_inline void write_back_non_zero_count ( H264Context * h ) [static]

Definition at line 830 of file h264.h.

Referenced by ff_h264_decode_mb_cabac(), and ff_h264_decode_mb_cavlc().

Variable Documentation

const uint8_t ff_h264_chroma_qp[7][QP_MAX_NUM+1]

One chroma qp table for each possible bit depth (8-14).

Definition at line 73 of file h264_ps.c.

Referenced by build_qp_table(), and hl_decode_mb().

const uint16_t ff_h264_mb_sizes[4]

Definition at line 51 of file h264.c.

Referenced by ff_h264_decode_mb_cabac(), ff_h264_decode_mb_cavlc(), and hl_decode_mb().

const uint8_t scan8[16 *3+3] [static]

Initial value:

 {
    4 +  1 * 8, 5 +  1 * 8, 4 +  2 * 8, 5 +  2 * 8,
    6 +  1 * 8, 7 +  1 * 8, 6 +  2 * 8, 7 +  2 * 8,
    4 +  3 * 8, 5 +  3 * 8, 4 +  4 * 8, 5 +  4 * 8,
    6 +  3 * 8, 7 +  3 * 8, 6 +  4 * 8, 7 +  4 * 8,
    4 +  6 * 8, 5 +  6 * 8, 4 +  7 * 8, 5 +  7 * 8,
    6 +  6 * 8, 7 +  6 * 8, 6 +  7 * 8, 7 +  7 * 8,
    4 +  8 * 8, 5 +  8 * 8, 4 +  9 * 8, 5 +  9 * 8,
    6 +  8 * 8, 7 +  8 * 8, 6 +  9 * 8, 7 +  9 * 8,
    4 + 11 * 8, 5 + 11 * 8, 4 + 12 * 8, 5 + 12 * 8,
    6 + 11 * 8, 7 + 11 * 8, 6 + 12 * 8, 7 + 12 * 8,
    4 + 13 * 8, 5 + 13 * 8, 4 + 14 * 8, 5 + 14 * 8,
    6 + 13 * 8, 7 + 13 * 8, 6 + 14 * 8, 7 + 14 * 8,
    0 +  0 * 8, 0 +  5 * 8, 0 + 10 * 8
}

Definition at line 759 of file h264.h.

Referenced by context_init(), decode_cabac_luma_residual(), decode_cabac_mb_ref(), decode_cabac_residual_dc(), decode_cabac_residual_dc_422(), decode_cabac_residual_internal(), decode_cabac_residual_nondc(), decode_luma_residual(), decode_mb(), decode_residual(), fetch_diagonal_mv(), ff_h264_check_intra4x4_pred_mode(), ff_h264_decode_mb_cabac(), ff_h264_decode_mb_cavlc(), ff_h264_frame_start(), ff_h264_idct8_add4(), ff_h264_idct8_add4_altivec(), ff_h264_idct_add16(), ff_h264_idct_add16_altivec(), ff_h264_idct_add16intra(), ff_h264_idct_add16intra_altivec(), ff_h264_idct_add8(), ff_h264_idct_add8_422(), ff_h264_idct_add8_altivec(), fill_decode_caches(), fill_filter_caches(), fill_filter_caches_inter(), filter_mb_dir(), get_cabac_cbf_ctx(), get_lowest_part_list_y(), get_lowest_part_y(), hl_decode_mb(), hl_decode_mb_444(), hl_decode_mb_idct_luma(), hl_decode_mb_predict_luma(), mc_dir_part(), mc_part(), mc_part_std(), mc_part_weighted(), pred_16x8_motion(), pred_8x16_motion(), pred_intra_mode(), pred_motion(), pred_non_zero_count(), pred_pskip_motion(), pred_spatial_direct_motion(), pred_temp_direct_motion(), prefetch_motion(), svq3_decode_frame(), svq3_decode_mb(), svq3_mc_dir(), and write_back_motion_list().


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	MAX_SPS_COUNT 32
#define	MAX_PPS_COUNT 256
#define	MAX_MMCO_COUNT 66
#define	MAX_DELAYED_PIC_COUNT 16
#define	MAX_MBPAIR_SIZE (256*1024)
#define	ALLOW_INTERLACE
#define	FMO 0
#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	LEFT_MBS 2
#define	LTOP 0
#define	LBOT 1
#define	LEFT(i) (i)
#define	FIELD_OR_MBAFF_PICTURE (FRAME_MBAFF \|\| FIELD_PICTURE)
#define	CABAC h->pps.cabac
#define	CHROMA (h->sps.chroma_format_idc)
#define	CHROMA422 (h->sps.chroma_format_idc == 2)
#define	CHROMA444 (h->sps.chroma_format_idc == 3)
#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	DELAYED_PIC_REF 4
	Value of Picture.reference when Picture is not a reference picture, but is held for delayed output.
#define	QP_MAX_NUM (51 + 6*6)
#define	LIST_NOT_USED -1
#define	PART_NOT_AVAILABLE -2
#define	LUMA_DC_BLOCK_INDEX 48
#define	CHROMA_DC_BLOCK_INDEX 49
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_get_profile (SPS *sps)
	compute profile from 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)
	Decode a network abstraction layer unit.
av_cold void	ff_h264_free_context (H264Context *h)
	Free any data that may have been allocated in the H264 context like SPS, PPS etc.
int	ff_h264_get_slice_type (const H264Context *h)
	Reconstruct bitstream slice_type.
int	ff_h264_alloc_tables (H264Context *h)
	Allocate tables.
int	ff_h264_fill_default_ref_list (H264Context *h)
	Fill the default_ref_list.
int	ff_h264_decode_ref_pic_list_reordering (H264Context *h)
void	ff_h264_fill_mbaff_ref_list (H264Context *h)
void	ff_h264_remove_all_refs (H264Context *h)
int	ff_h264_execute_ref_pic_marking (H264Context h, MMCO mmco, int mmco_count)
	Execute the reference picture marking (memory management control operations).
int	ff_h264_decode_ref_pic_marking (H264Context h, GetBitContext gb)
void	ff_generate_sliding_window_mmcos (H264Context *h)
int	ff_h264_check_intra4x4_pred_mode (H264Context *h)
	Check if the top & left blocks are available if needed & change the dc mode so it only uses the available blocks.
int	ff_h264_check_intra_pred_mode (H264Context *h, int mode, int is_chroma)
	Check if the top & left blocks are available if needed & change the dc mode so it only uses the available blocks.
void	ff_h264_hl_decode_mb (H264Context *h)
int	ff_h264_frame_start (H264Context *h)
int	ff_h264_decode_extradata (H264Context h, const uint8_t buf, int size)
av_cold int	ff_h264_decode_init (AVCodecContext *avctx)
av_cold void	ff_h264_decode_init_vlc (void)
int	ff_h264_decode_mb_cavlc (H264Context *h)
	Decode a macroblock.
int	ff_h264_decode_mb_cabac (H264Context *h)
	Decode a CABAC coded macroblock.
void	ff_h264_init_cabac_states (H264Context *h)
void	ff_h264_direct_dist_scale_factor (H264Context *const h)
void	ff_h264_direct_ref_list_init (H264Context *const h)
void	ff_h264_pred_direct_motion (H264Context const h, int mb_type)
void	ff_h264_filter_mb_fast (H264Context h, int mb_x, int mb_y, uint8_t img_y, uint8_t img_cb, uint8_t img_cr, unsigned int linesize, unsigned int uvlinesize)
void	ff_h264_filter_mb (H264Context h, int mb_x, int mb_y, uint8_t img_y, uint8_t img_cb, uint8_t img_cr, unsigned int linesize, unsigned int uvlinesize)
void	ff_h264_reset_sei (H264Context *h)
	Reset SEI values at the beginning of the frame.
static av_always_inline uint32_t	pack16to32 (int a, int b)
static av_always_inline uint16_t	pack8to16 (int a, int b)
static av_always_inline int	get_chroma_qp (H264Context *h, int t, int qscale)
	Get the chroma qp.
static av_always_inline int	pred_intra_mode (H264Context *h, int n)
	Get the predicted intra4x4 prediction mode.
static av_always_inline void	write_back_intra_pred_mode (H264Context *h)
static av_always_inline void	write_back_non_zero_count (H264Context *h)
static av_always_inline void	write_back_motion_list (H264Context h, MpegEncContext const s, int b_stride, int b_xy, int b8_xy, int mb_type, int list)
static av_always_inline void	write_back_motion (H264Context *h, int mb_type)
static av_always_inline int	get_dct8x8_allowed (H264Context *h)
Variables
const uint8_t	ff_h264_chroma_qp [7][QP_MAX_NUM+1]
	One chroma qp table for each possible bit depth (8-14).
const uint16_t	ff_h264_mb_sizes [4]
static const uint8_t	scan8 [16 *3+3]