H.264 / AVC / MPEG-4 part10 codec. More...

#include "libavutil/buffer.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/thread.h"
#include "cabac.h"
#include "error_resilience.h"
#include "get_bits.h"
#include "h264_parse.h"
#include "h264_sei.h"
#include "h2645_parse.h"
#include "h264chroma.h"
#include "h264dsp.h"
#include "h264pred.h"
#include "h264qpel.h"
#include "internal.h"
#include "mpegutils.h"
#include "parser.h"
#include "qpeldsp.h"
#include "rectangle.h"
#include "videodsp.h"

Data Structures
struct	SPS
	Sequence parameter set. More...

struct	PPS
	Picture parameter set. More...

struct	H264ParamSets

struct	MMCO
	Memory management control operation. More...

struct	H264Picture

struct	H264Ref

struct	H264SliceContext

struct	H264Context
	H264Context. More...

Macros
#define	H264_MAX_PICTURE_COUNT 36

#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 32
	The maximum number of slices supported by the decoder. More...

#define	MB_MBAFF(h) (h)->mb_mbaff

#define	MB_FIELD(sl) (sl)->mb_field_decoding_flag

#define	FRAME_MBAFF(h) (h)->mb_aff_frame

#define	FIELD_PICTURE(h) ((h)->picture_structure != PICT_FRAME)

#define	LEFT_MBS 2

#define	LTOP 0

#define	LBOT 1

#define	LEFT(i) (i)

#define	FIELD_OR_MBAFF_PICTURE(h) (FRAME_MBAFF(h) \|\| FIELD_PICTURE(h))

#define	CABAC(h) (h)->ps.pps->cabac

#define	CHROMA(h) ((h)->ps.sps->chroma_format_idc)

#define	CHROMA422(h) ((h)->ps.sps->chroma_format_idc == 2)

#define	CHROMA444(h) ((h)->ps.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	QP_MAX_NUM (51 + 6*6)

#define	LIST_NOT_USED -1

#define	PART_NOT_AVAILABLE -2

#define	FRAME_RECOVERED_IDR (1 << 0)
	We have seen an IDR, so all the following frames in coded order are correctly decodable. More...

#define	FRAME_RECOVERED_SEI (1 << 1)
	Sufficient number of frames have been decoded since a SEI recovery point, so all the following frames in presentation order are correct. More...

#define	LUMA_DC_BLOCK_INDEX 48

#define	CHROMA_DC_BLOCK_INDEX 49

#define	SLICE_SINGLETHREAD 1

#define	SLICE_SKIPED 2

Enumerations
enum	{ NAL_SLICE = 1, NAL_DPA = 2, NAL_DPB = 3, NAL_DPC = 4, NAL_IDR_SLICE = 5, NAL_SEI = 6, NAL_SPS = 7, NAL_PPS = 8, NAL_AUD = 9, NAL_END_SEQUENCE = 10, NAL_END_STREAM = 11, NAL_FILLER_DATA = 12, NAL_SPS_EXT = 13, NAL_AUXILIARY_SLICE = 19, NAL_FF_IGNORE = 0xff0f001 }

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
void	ff_h264_ps_uninit (H264ParamSets *ps)
	Uninit H264 param sets structure. More...

int	ff_h264_decode_seq_parameter_set (GetBitContext gb, AVCodecContext avctx, H264ParamSets *ps, int ignore_truncation)
	Decode SPS. More...

int	ff_h264_decode_picture_parameter_set (GetBitContext gb, AVCodecContext avctx, H264ParamSets *ps, int bit_length)
	Decode PPS. More...

int	ff_h264_get_slice_type (const H264SliceContext *sl)
	Reconstruct bitstream slice_type. More...

int	ff_h264_alloc_tables (H264Context *h)
	Allocate tables. More...

int	ff_h264_decode_ref_pic_list_reordering (H264Context h, H264SliceContext sl)

void	ff_h264_fill_mbaff_ref_list (H264SliceContext *sl)

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). More...

int	ff_h264_decode_ref_pic_marking (H264Context h, GetBitContext gb, int first_slice)

int	ff_generate_sliding_window_mmcos (H264Context *h, int first_slice)

void	ff_h264_hl_decode_mb (const H264Context h, H264SliceContext sl)

int	ff_h264_decode_init (AVCodecContext *avctx)

void	ff_h264_decode_init_vlc (void)

int	ff_h264_decode_mb_cavlc (const H264Context h, H264SliceContext sl)
	Decode a macroblock. More...

int	ff_h264_decode_mb_cabac (const H264Context h, H264SliceContext sl)
	Decode a CABAC coded macroblock. More...

void	ff_h264_init_cabac_states (const H264Context h, H264SliceContext sl)

void	ff_h264_direct_dist_scale_factor (const H264Context const h, H264SliceContext sl)

void	ff_h264_direct_ref_list_init (const H264Context const h, H264SliceContext sl)

void	ff_h264_pred_direct_motion (const H264Context const h, H264SliceContext sl, int *mb_type)

void	ff_h264_filter_mb_fast (const H264Context h, H264SliceContext sl, 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 (const H264Context h, H264SliceContext sl, int mb_x, int mb_y, uint8_t img_y, uint8_t img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize)

static av_always_inline uint32_t	pack16to32 (unsigned a, unsigned b)

static av_always_inline uint16_t	pack8to16 (unsigned a, unsigned b)

static av_always_inline int	get_chroma_qp (const H264Context *h, int t, int qscale)
	Get the chroma qp. More...

static av_always_inline int	pred_intra_mode (const H264Context h, H264SliceContext sl, int n)
	Get the predicted intra4x4 prediction mode. More...

static av_always_inline void	write_back_intra_pred_mode (const H264Context h, H264SliceContext sl)

static av_always_inline void	write_back_non_zero_count (const H264Context h, H264SliceContext sl)

static av_always_inline void	write_back_motion_list (const H264Context h, H264SliceContext sl, int b_stride, int b_xy, int b8_xy, int mb_type, int list)

static av_always_inline void	write_back_motion (const H264Context h, H264SliceContext sl, int mb_type)

static av_always_inline int	get_dct8x8_allowed (const H264Context h, H264SliceContext sl)

static int	find_start_code (const uint8_t *buf, int buf_size, int buf_index, int next_avc)

int	ff_h264_field_end (H264Context h, H264SliceContext sl, int in_setup)

int	ff_h264_ref_picture (H264Context h, H264Picture dst, H264Picture *src)

void	ff_h264_unref_picture (H264Context h, H264Picture pic)

int	ff_h264_slice_context_init (H264Context h, H264SliceContext sl)
	Init context Allocate buffers which are not shared amongst multiple threads. More...

void	ff_h264_draw_horiz_band (const H264Context h, H264SliceContext sl, int y, int height)

int	ff_h264_decode_slice_header (H264Context h, H264SliceContext sl)
	Decode a slice header. More...

int	ff_h264_execute_decode_slices (H264Context *h, unsigned context_count)
	Call decode_slice() for each context. More...

int	ff_h264_update_thread_context (AVCodecContext dst, const AVCodecContext src)

void	ff_h264_flush_change (H264Context *h)

void	ff_h264_free_tables (H264Context *h)

void	ff_h264_set_erpic (ERPicture dst, H264Picture src)

Variables
const uint16_t	ff_h264_mb_sizes [4]

static const uint8_t	scan8 [16 *3+3]

Detailed Description

H.264 / AVC / MPEG-4 part10 codec.

Author: Michael Niedermayer micha.nosp@m.elni.nosp@m.@gmx..nosp@m.at

Definition in file h264.h.

Macro Definition Documentation

#define H264_MAX_PICTURE_COUNT 36

Definition at line 51 of file h264.h.

Referenced by copy_picture_range(), ff_h264_decode_seq_parameter_set(), ff_h264_update_thread_context(), find_unused_picture(), flush_dpb(), h264_decode_end(), h264_init_context(), and release_unused_pictures().

#define MAX_SPS_COUNT 32

Definition at line 53 of file h264.h.

Referenced by active_parameter_sets(), decode_picture_timing(), ff_h264_decode_picture_parameter_set(), ff_h264_decode_seq_parameter_set(), ff_h264_ps_uninit(), ff_hevc_decode_nal_pps(), ff_hevc_parse_sps(), hvcc_write(), and vdadec_init().

#define MAX_PPS_COUNT 256

Definition at line 54 of file h264.h.

Referenced by ff_h264_decode_picture_parameter_set(), ff_h264_decode_slice_header(), ff_h264_ps_uninit(), ff_hevc_decode_nal_pps(), hevc_parse_slice_header(), hls_slice_header(), hvcc_write(), mediacodec_decode_init(), and parse_nal_units().

#define MAX_MMCO_COUNT 66

Definition at line 56 of file h264.h.

Referenced by ff_generate_sliding_window_mmcos(), ff_h264_decode_ref_pic_marking(), and scan_mmco_reset().

#define MAX_DELAYED_PIC_COUNT 16

Definition at line 58 of file h264.h.

Referenced by decode_postinit(), ff_h264_decode_seq_parameter_set(), ff_h264_execute_ref_pic_marking(), ff_h264_update_thread_context(), h264_init_context(), and idr().

#define MAX_MBPAIR_SIZE (256*1024)

Definition at line 60 of file h264.h.

#define ALLOW_INTERLACE

Definition at line 64 of file h264.h.

#define FMO 0

Definition at line 66 of file h264.h.

Referenced by ff_h264_alloc_tables(), fill_decode_neighbors(), and write_back_motion_list().

#define MAX_SLICES 32

The maximum number of slices supported by the decoder.

must be a power of 2

Definition at line 72 of file h264.h.

#define MB_MBAFF ( h ) (h)->mb_mbaff

Definition at line 75 of file h264.h.

Referenced by await_references(), backup_mb_border(), ff_h264_decode_mb_cabac(), ff_h264_decode_mb_cavlc(), fill_filter_caches_inter(), and xchg_mb_border().

#define MB_FIELD ( sl ) (sl)->mb_field_decoding_flag

#define FRAME_MBAFF ( h ) (h)->mb_aff_frame

#define FIELD_PICTURE ( h ) ((h)->picture_structure != PICT_FRAME)

Definition at line 78 of file h264.h.

Referenced by await_references(), decode_cabac_mb_skip(), decode_finish_row(), decode_nal_units(), ff_generate_sliding_window_mmcos(), ff_h264_decode_ref_pic_list_reordering(), ff_h264_decode_ref_pic_marking(), ff_h264_decode_slice_header(), ff_h264_direct_dist_scale_factor(), h264_filter_mb_fast_internal(), h264_initialise_ref_list(), and pic_num_extract().

#define LEFT_MBS 2

Definition at line 79 of file h264.h.

Referenced by fill_decode_caches(), fill_decode_neighbors(), and fill_filter_caches().

#define LTOP 0

Definition at line 80 of file h264.h.

Referenced by decode_cabac_intra_mb_type(), decode_cabac_mb_chroma_pre_mode(), ff_h264_decode_mb_cabac(), ff_h264_filter_mb(), fill_decode_caches(), fill_decode_neighbors(), fill_filter_caches(), fill_filter_caches_inter(), filter_mb_dir(), h264_filter_mb_fast_internal(), and pred_pskip_motion().

#define LBOT 1

Definition at line 81 of file h264.h.

Referenced by fill_decode_caches(), fill_decode_neighbors(), and fill_filter_caches().

#define LEFT ( i ) (i)

Definition at line 82 of file h264.h.

#define FIELD_OR_MBAFF_PICTURE ( h ) (FRAME_MBAFF(h) || FIELD_PICTURE(h))

Definition at line 95 of file h264.h.

Referenced by decode_postinit(), decode_slice(), ff_h264_decode_slice_header(), ff_h264_execute_decode_slices(), fill_slice_long(), and vaapi_h264_decode_slice().

#define CABAC ( h ) (h)->ps.pps->cabac

Definition at line 98 of file h264.h.

Referenced by fill_decode_caches(), fill_filter_caches(), filter_mb_dir(), write_back_motion(), and write_back_motion_list().

#define CHROMA ( h ) ((h)->ps.sps->chroma_format_idc)

Definition at line 101 of file h264.h.

#define CHROMA422 ( h ) ((h)->ps.sps->chroma_format_idc == 2)

Definition at line 102 of file h264.h.

Referenced by backup_mb_border(), ff_h264_decode_mb_cabac(), ff_h264_decode_mb_cavlc(), ff_h264_filter_mb(), fill_decode_caches(), filter_mb_dir(), get_pixel_format(), h264_filter_mb_fast_internal(), and hl_decode_mb().

#define CHROMA444 ( h ) ((h)->ps.sps->chroma_format_idc == 3)

Definition at line 103 of file h264.h.

Referenced by backup_mb_border(), decode_cabac_residual_nondc(), ff_h264_decode_mb_cabac(), ff_h264_decode_mb_cavlc(), ff_h264_filter_mb(), ff_h264_hl_decode_mb(), fill_decode_caches(), filter_mb_dir(), get_pixel_format(), h264_filter_mb_fast_internal(), and loop_filter().

#define EXTENDED_SAR 255

Definition at line 105 of file h264.h.

Referenced by decode_vui_parameters().

#define MB_TYPE_REF0 MB_TYPE_ACPRED

Definition at line 107 of file h264.h.

#define MB_TYPE_8x8DCT 0x01000000

Definition at line 108 of file h264.h.

Referenced by ff_h264_decode_mb_cabac(), and ff_h264_decode_mb_cavlc().

#define IS_REF0 ( a ) ((a) & MB_TYPE_REF0)

Definition at line 109 of file h264.h.

Referenced by ff_h264_decode_mb_cavlc().

#define IS_8x8DCT ( a ) ((a) & MB_TYPE_8x8DCT)

Definition at line 110 of file h264.h.

Referenced by decode_cabac_luma_residual(), decode_luma_residual(), ff_h264_decode_mb_cabac(), ff_h264_filter_mb(), fill_decode_caches(), fill_filter_caches(), filter_mb_dir(), h264_filter_mb_fast_internal(), hl_decode_mb_idct_luma(), and hl_decode_mb_predict_luma().

#define QP_MAX_NUM (51 + 6*6)

Definition at line 112 of file h264.h.

#define LIST_NOT_USED -1

Definition at line 506 of file h264.h.

Referenced by ff_h264_decode_mb_cabac(), ff_h264_decode_mb_cavlc(), fill_decode_caches(), fill_filter_caches_inter(), pred_pskip_motion(), and write_back_motion().

#define PART_NOT_AVAILABLE -2

Definition at line 507 of file h264.h.

Referenced by fetch_diagonal_mv(), ff_h264_decode_mb_cabac(), ff_h264_decode_mb_cavlc(), ff_h264_slice_context_init(), fill_decode_caches(), pred_motion(), pred_pskip_motion(), pred_spatial_direct_motion(), svq3_decode_frame(), svq3_decode_mb(), svq3_fetch_diagonal_mv(), and svq3_pred_motion().

#define FRAME_RECOVERED_IDR (1 << 0)

We have seen an IDR, so all the following frames in coded order are correctly decodable.

Definition at line 658 of file h264.h.

Referenced by decode_nal_units().

#define FRAME_RECOVERED_SEI (1 << 1)

Sufficient number of frames have been decoded since a SEI recovery point, so all the following frames in presentation order are correct.

Definition at line 663 of file h264.h.

Referenced by decode_postinit(), and ff_h264_execute_ref_pic_marking().

#define LUMA_DC_BLOCK_INDEX 48

Definition at line 797 of file h264.h.

Referenced by decode_cabac_luma_residual(), decode_cabac_residual_internal(), decode_luma_residual(), decode_residual(), get_cabac_cbf_ctx(), and hl_decode_mb_predict_luma().

#define CHROMA_DC_BLOCK_INDEX 49

Definition at line 798 of file h264.h.

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

#define SLICE_SINGLETHREAD 1

Definition at line 993 of file h264.h.

Referenced by decode_nal_units(), and ff_h264_decode_slice_header().

#define SLICE_SKIPED 2

Definition at line 994 of file h264.h.

Referenced by decode_nal_units(), and ff_h264_decode_slice_header().

Enumeration Type Documentation

anonymous enum

Enumerator
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
NAL_FF_IGNORE

Definition at line 115 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 244 of file h264.h.

Function Documentation

void ff_h264_ps_uninit ( H264ParamSets * ps )

Uninit H264 param sets structure.

Definition at line 301 of file h264_ps.c.

Referenced by h264_close(), h264_decode_end(), and mediacodec_decode_init().

int ff_h264_decode_seq_parameter_set	(	GetBitContext *	gb,
		AVCodecContext *	avctx,
		H264ParamSets *	ps,
		int	ignore_truncation
	)

Decode SPS.

Definition at line 318 of file h264_ps.c.

Referenced by decode_extradata_ps(), decode_nal_units(), and parse_nal_units().

int ff_h264_decode_picture_parameter_set	(	GetBitContext *	gb,
		AVCodecContext *	avctx,
		H264ParamSets *	ps,
		int	bit_length
	)

Decode PPS.

Definition at line 706 of file h264_ps.c.

Referenced by decode_extradata_ps(), decode_nal_units(), and parse_nal_units().

int ff_h264_get_slice_type ( const H264SliceContext * sl )

Reconstruct bitstream slice_type.

Definition at line 1812 of file h264_slice.c.

Referenced by fill_slice_long(), and vaapi_h264_decode_slice().

int ff_h264_alloc_tables ( H264Context * h )

Allocate tables.

needs width/height

Definition at line 180 of file h264.c.

Referenced by h264_slice_header_init().

int ff_h264_decode_ref_pic_list_reordering	(	H264Context *	h,
		H264SliceContext *	sl
	)

Definition at line 273 of file h264_refs.c.

Referenced by ff_h264_decode_slice_header().

void ff_h264_fill_mbaff_ref_list ( H264SliceContext * sl )

Definition at line 404 of file h264_refs.c.

Referenced by ff_h264_decode_slice_header().

void ff_h264_remove_all_refs ( H264Context * h )

Definition at line 543 of file h264_refs.c.

Referenced by h264_decode_end(), and idr().

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 619 of file h264_refs.c.

Referenced by ff_h264_decode_slice_header(), ff_h264_field_end(), and ff_h264_update_thread_context().

int ff_h264_decode_ref_pic_marking	(	H264Context *	h,
		GetBitContext *	gb,
		int	first_slice
	)

Definition at line 828 of file h264_refs.c.

Referenced by ff_h264_decode_slice_header().

int ff_generate_sliding_window_mmcos	(	H264Context *	h,
		int	first_slice
	)

Definition at line 587 of file h264_refs.c.

Referenced by ff_h264_decode_ref_pic_marking(), and ff_h264_decode_slice_header().

void ff_h264_hl_decode_mb	(	const H264Context *	h,
		H264SliceContext *	sl
	)

Definition at line 798 of file h264_mb.c.

Referenced by decode_slice(), and h264_er_decode_mb().

int ff_h264_decode_init ( AVCodecContext * avctx )

Definition at line 393 of file h264.c.

void ff_h264_decode_init_vlc ( void )

Definition at line 327 of file h264_cavlc.c.

Referenced by ff_h264_decode_init().

int ff_h264_decode_mb_cavlc	(	const H264Context *	h,
		H264SliceContext *	sl
	)

Decode a macroblock.

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

Definition at line 702 of file h264_cavlc.c.

Referenced by decode_slice().

int ff_h264_decode_mb_cabac	(	const H264Context *	h,
		H264SliceContext *	sl
	)

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 1915 of file h264_cabac.c.

Referenced by decode_slice().

void ff_h264_init_cabac_states	(	const H264Context *	h,
		H264SliceContext *	sl
	)

Definition at line 1264 of file h264_cabac.c.

Referenced by decode_slice().

void ff_h264_direct_dist_scale_factor	(	const H264Context *const	h,
		H264SliceContext *	sl
	)

Definition at line 51 of file h264_direct.c.

Referenced by ff_h264_decode_slice_header().

void ff_h264_direct_ref_list_init	(	const H264Context *const	h,
		H264SliceContext *	sl
	)

Definition at line 110 of file h264_direct.c.

Referenced by ff_h264_decode_slice_header().

void ff_h264_pred_direct_motion	(	const H264Context *const	h,
		H264SliceContext *	sl,
		int *	mb_type
	)

Definition at line 706 of file h264_direct.c.

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

void ff_h264_filter_mb_fast	(	const H264Context *	h,
		H264SliceContext *	sl,
		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().

void ff_h264_filter_mb	(	const H264Context *	h,
		H264SliceContext *	sl,
		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 717 of file h264_loopfilter.c.

Referenced by ff_h264_filter_mb_fast(), and loop_filter().

static av_always_inline uint32_t pack16to32	(	unsigned	a,
		unsigned	b
	)

static

Definition at line 817 of file h264.h.

Referenced by ff_h264_decode_mb_cabac(), ff_h264_decode_mb_cavlc(), fill_filter_caches_inter(), h264_er_decode_mb(), pred_pskip_motion(), pred_spatial_direct_motion(), pred_temp_direct_motion(), and svq3_mc_dir().

static av_always_inline uint16_t pack8to16	(	unsigned	a,
		unsigned	b
	)

static

Definition at line 826 of file h264.h.

Referenced by ff_h264_decode_mb_cabac().

static av_always_inline int get_chroma_qp	(	const H264Context *	h,
		int	t,
		int	qscale
	)

static

Get the chroma qp.

Definition at line 838 of file h264.h.

Referenced by ff_h264_decode_mb_cabac(), ff_h264_decode_mb_cavlc(), ff_h264_decode_slice_header(), ff_h264_filter_mb(), filter_mb_dir(), h264_filter_mb_fast_internal(), and loop_filter().

static av_always_inline int pred_intra_mode	(	const H264Context *	h,
		H264SliceContext *	sl,
		int	n
	)

static

Get the predicted intra4x4 prediction mode.

Definition at line 846 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	(	const H264Context *	h,
		H264SliceContext *	sl
	)

static

Definition at line 862 of file h264.h.

Referenced by ff_h264_decode_mb_cabac(), and ff_h264_decode_mb_cavlc().

static av_always_inline void write_back_non_zero_count	(	const H264Context *	h,
		H264SliceContext *	sl
	)

static

Definition at line 874 of file h264.h.

Referenced by ff_h264_decode_mb_cabac(), and ff_h264_decode_mb_cavlc().

static av_always_inline void write_back_motion_list	(	const H264Context *	h,
		H264SliceContext *	sl,
		int	b_stride,
		int	b_xy,
		int	b8_xy,
		int	mb_type,
		int	list
	)

static

Definition at line 898 of file h264.h.

Referenced by write_back_motion().

static av_always_inline void write_back_motion	(	const H264Context *	h,
		H264SliceContext *	sl,
		int	mb_type
	)

static

Definition at line 934 of file h264.h.

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

static av_always_inline int get_dct8x8_allowed	(	const H264Context *	h,
		H264SliceContext *	sl
	)

static

Definition at line 961 of file h264.h.

Referenced by ff_h264_decode_mb_cabac(), and ff_h264_decode_mb_cavlc().

static int find_start_code	(	const uint8_t *	buf,
		int	buf_size,
		int	buf_index,
		int	next_avc
	)

inlinestatic

Definition at line 973 of file h264.h.

Referenced by parse_nal_units().

int ff_h264_field_end	(	H264Context *	h,
		H264SliceContext *	sl,
		int	in_setup
	)

Definition at line 154 of file h264_picture.c.

Referenced by ff_h264_decode_slice_header(), and h264_decode_frame().

int ff_h264_ref_picture	(	H264Context *	h,
		H264Picture *	dst,
		H264Picture *	src
	)

Definition at line 68 of file h264_picture.c.

Referenced by ff_h264_remove_all_refs(), ff_h264_update_thread_context(), and h264_frame_start().

void ff_h264_unref_picture	(	H264Context *	h,
		H264Picture *	pic
	)

Definition at line 47 of file h264_picture.c.

Referenced by alloc_picture(), ff_h264_flush_change(), ff_h264_ref_picture(), ff_h264_remove_all_refs(), ff_h264_update_thread_context(), flush_dpb(), h264_decode_end(), h264_decode_frame(), h264_frame_start(), and release_unused_pictures().

int ff_h264_slice_context_init	(	H264Context *	h,
		H264SliceContext *	sl
	)

Init context Allocate buffers which are not shared amongst multiple threads.

Definition at line 238 of file h264.c.

Referenced by h264_slice_header_init().

void ff_h264_draw_horiz_band	(	const H264Context *	h,
		H264SliceContext *	sl,
		int	y,
		int	height
	)

Definition at line 102 of file h264.c.

Referenced by decode_finish_row(), dxva2_h264_end_frame(), vaapi_h264_end_frame(), and vdpau_h264_end_frame().

int ff_h264_decode_slice_header	(	H264Context *	h,
		H264SliceContext *	sl
	)

Decode a slice header.

This will (re)initialize the decoder and call h264_frame_start() as needed.

Parameters

h	h264context

Returns: 0 if okay, <0 if an error occurred

Definition at line 1031 of file h264_slice.c.

Referenced by decode_nal_units().

int ff_h264_execute_decode_slices	(	H264Context *	h,
		unsigned	context_count
	)

Call decode_slice() for each context.

Parameters

h	h264 master context
context_count	number of contexts to execute

Definition at line 2400 of file h264_slice.c.

Referenced by decode_nal_units().

int ff_h264_update_thread_context	(	AVCodecContext *	dst,
		const AVCodecContext *	src
	)

Definition at line 297 of file h264_slice.c.

void ff_h264_flush_change ( H264Context * h )

Definition at line 756 of file h264.c.

Referenced by ff_h264_decode_init(), ff_h264_decode_slice_header(), and flush_dpb().

void ff_h264_free_tables ( H264Context * h )

Definition at line 137 of file h264.c.

Referenced by ff_h264_alloc_tables(), flush_dpb(), h264_decode_end(), and h264_slice_header_init().

void ff_h264_set_erpic	(	ERPicture *	dst,
		H264Picture *	src
	)

Definition at line 131 of file h264_picture.c.

Referenced by decode_nal_units(), and h264_frame_start().

Variable Documentation

const uint16_t ff_h264_mb_sizes[4]

Definition at line 58 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:

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

Definition at line 801 of file h264.h.

Referenced by 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_residual(), decode_slice(), fetch_diagonal_mv(), ff_h264_check_intra4x4_pred_mode(), ff_h264_decode_mb_cabac(), ff_h264_decode_mb_cavlc(), ff_h264_idct8_add4(), ff_h264_idct8_add4_8_mmi(), ff_h264_idct8_add4_msa(), ff_h264_idct_add16(), ff_h264_idct_add16_8_mmi(), ff_h264_idct_add16_intra_msa(), ff_h264_idct_add16_msa(), ff_h264_idct_add16intra(), ff_h264_idct_add16intra_8_mmi(), ff_h264_idct_add8(), ff_h264_idct_add8_422(), ff_h264_idct_add8_422_8_mmi(), ff_h264_idct_add8_422_msa(), ff_h264_idct_add8_8_mmi(), ff_h264_idct_add8_msa(), ff_h264_slice_context_init(), 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(), h264_er_decode_mb(), h264_frame_start(), 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(), svq3_pred_motion(), and write_back_motion_list().

Data Structures

Macros

Enumerations

Functions

Variables

Detailed Description

Macro Definition Documentation

Enumeration Type Documentation

Function Documentation

Variable Documentation