h264.c File Reference

H.264 / AVC / MPEG4 part10 codec. More...

#include "libavutil/imgutils.h"
#include "internal.h"
#include "cabac.h"
#include "cabac_functions.h"
#include "dsputil.h"
#include "avcodec.h"
#include "mpegvideo.h"
#include "h264.h"
#include "h264data.h"
#include "h264_mvpred.h"
#include "golomb.h"
#include "mathops.h"
#include "rectangle.h"
#include "thread.h"
#include "vdpau_internal.h"
#include "libavutil/avassert.h"
#include <assert.h>
#include "h264_mb_template.c"

Go to the source code of this file.

Macros

#define STARTCODE_TEST
 
#define IN_RANGE(a, b, size)   (((a) >= (b)) && ((a) < ((b) + (size))))
 
#define copy_fields(to, from, start_field, end_field)
 
#define XCHG(a, b, xchg)
 
#define BITS   8
 
#define SIMPLE   1
 
#define BITS   16
 
#define SIMPLE   0
 
#define T(x)   (x >> 2) | ((x << 2) & 0xF)
 
#define T(x)   (x >> 3) | ((x & 7) << 3)
 

Functions

int ff_h264_check_intra4x4_pred_mode (H264Context *h)
 Check if the top & left blocks are available if needed and change the dc mode so it only uses the available blocks. More...
 
int ff_h264_check_intra_pred_mode (H264Context *h, int mode, int is_chroma)
 Check if the top & left blocks are available if needed and change the dc mode so it only uses the available blocks. More...
 
const uint8_tff_h264_decode_nal (H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length)
 Decode a network abstraction layer unit. More...
 
static int decode_rbsp_trailing (H264Context *h, const uint8_t *src)
 Identify the exact end of the bitstream. More...
 
static int get_lowest_part_list_y (H264Context *h, Picture *pic, int n, int height, int y_offset, int list)
 
static void get_lowest_part_y (H264Context *h, int refs[2][48], int n, int height, int y_offset, int list0, int list1, int *nrefs)
 
static void await_references (H264Context *h)
 Wait until all reference frames are available for MC operations. More...
 
static av_always_inline void mc_dir_part (H264Context *h, Picture *pic, int n, int square, int height, int delta, int list, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int src_x_offset, int src_y_offset, qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op, int pixel_shift, int chroma_idc)
 
static av_always_inline void mc_part_std (H264Context *h, int n, int square, int height, int delta, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int x_offset, int y_offset, qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put, qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg, int list0, int list1, int pixel_shift, int chroma_idc)
 
static av_always_inline void mc_part_weighted (H264Context *h, int n, int square, int height, int delta, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int x_offset, int y_offset, qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put, h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op, h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg, int list0, int list1, int pixel_shift, int chroma_idc)
 
static av_always_inline void prefetch_motion (H264Context *h, int list, int pixel_shift, int chroma_idc)
 
static void free_tables (H264Context *h, int free_rbsp)
 
static void init_dequant8_coeff_table (H264Context *h)
 
static void init_dequant4_coeff_table (H264Context *h)
 
static void init_dequant_tables (H264Context *h)
 
int ff_h264_alloc_tables (H264Context *h)
 Allocate tables. More...
 
static void clone_tables (H264Context *dst, H264Context *src, int i)
 Mimic alloc_tables(), but for every context thread. More...
 
static int context_init (H264Context *h)
 Init context Allocate buffers which are not shared amongst multiple threads. More...
 
static int decode_nal_units (H264Context *h, const uint8_t *buf, int buf_size, int parse_extradata)
 
static av_cold void common_init (H264Context *h)
 
int ff_h264_decode_extradata (H264Context *h)
 
av_cold int ff_h264_decode_init (AVCodecContext *avctx)
 
static void copy_picture_range (Picture **to, Picture **from, int count, MpegEncContext *new_base, MpegEncContext *old_base)
 
static void copy_parameter_set (void **to, void **from, int count, int size)
 
static int decode_init_thread_copy (AVCodecContext *avctx)
 
static int h264_slice_header_init (H264Context *, int)
 
static int h264_set_parameter_from_sps (H264Context *h)
 
static int decode_update_thread_context (AVCodecContext *dst, const AVCodecContext *src)
 
int ff_h264_frame_start (H264Context *h)
 
static void decode_postinit (H264Context *h, int setup_finished)
 Run setup operations that must be run after slice header decoding. More...
 
static av_always_inline void backup_mb_border (H264Context *h, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr, int linesize, int uvlinesize, int simple)
 
static av_always_inline void xchg_mb_border (H264Context *h, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr, int linesize, int uvlinesize, int xchg, int chroma444, int simple, int pixel_shift)
 
static av_always_inline int dctcoef_get (DCTELEM *mb, int high_bit_depth, int index)
 
static av_always_inline void dctcoef_set (DCTELEM *mb, int high_bit_depth, int index, int value)
 
static av_always_inline void hl_decode_mb_predict_luma (H264Context *h, int mb_type, int is_h264, int simple, int transform_bypass, int pixel_shift, int *block_offset, int linesize, uint8_t *dest_y, int p)
 
static av_always_inline void hl_decode_mb_idct_luma (H264Context *h, int mb_type, int is_h264, int simple, int transform_bypass, int pixel_shift, int *block_offset, int linesize, uint8_t *dest_y, int p)
 
void ff_h264_hl_decode_mb (H264Context *h)
 
static int pred_weight_table (H264Context *h)
 
static void implicit_weight_table (H264Context *h, int field)
 Initialize implicit_weight table. More...
 
static void idr (H264Context *h)
 instantaneous decoder refresh. More...
 
static void flush_change (H264Context *h)
 
static void flush_dpb (AVCodecContext *avctx)
 
static int init_poc (H264Context *h)
 
static void init_scan_tables (H264Context *h)
 initialize scan tables More...
 
static int field_end (H264Context *h, int in_setup)
 
static int clone_slice (H264Context *dst, H264Context *src)
 Replicate H264 "master" context to thread contexts. More...
 
int ff_h264_get_profile (SPS *sps)
 Compute profile from profile_idc and constraint_set?_flags. More...
 
static enum PixelFormat get_pixel_format (H264Context *h)
 
static int decode_slice_header (H264Context *h, H264Context *h0)
 Decode a slice header. More...
 
int ff_h264_get_slice_type (const H264Context *h)
 Reconstruct bitstream slice_type. More...
 
static av_always_inline void fill_filter_caches_inter (H264Context *h, MpegEncContext *const s, int mb_type, int top_xy, int left_xy[LEFT_MBS], int top_type, int left_type[LEFT_MBS], int mb_xy, int list)
 
static int fill_filter_caches (H264Context *h, int mb_type)
 
static void loop_filter (H264Context *h, int start_x, int end_x)
 
static void predict_field_decoding_flag (H264Context *h)
 
static void decode_finish_row (H264Context *h)
 Draw edges and report progress for the last MB row. More...
 
static int decode_slice (struct AVCodecContext *avctx, void *arg)
 
static int execute_decode_slices (H264Context *h, int context_count)
 Call decode_slice() for each context. More...
 
static int get_consumed_bytes (MpegEncContext *s, int pos, int buf_size)
 Return the number of bytes consumed for building the current frame. More...
 
static int decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
 
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. More...
 
static av_cold int h264_decode_end (AVCodecContext *avctx)
 

Variables

const uint16_t ff_h264_mb_sizes [4] = { 256, 384, 512, 768 }
 
static const uint8_t rem6 [QP_MAX_NUM+1]
 
static const uint8_t div6 [QP_MAX_NUM+1]
 
static enum AVPixelFormat hwaccel_pixfmt_list_h264_jpeg_420 []
 
static const AVProfile profiles []
 
AVCodec ff_h264_decoder
 

Detailed Description

H.264 / AVC / MPEG4 part10 codec.

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

Definition in file h264.c.

Macro Definition Documentation

#define BITS   8

Definition at line 1971 of file h264.c.

#define BITS   16

Definition at line 1971 of file h264.c.

#define copy_fields (   to,
  from,
  start_field,
  end_field 
)
Value:
memcpy(&to->start_field, &from->start_field, \
(char *)&to->end_field - (char *)&to->start_field)

Definition at line 1142 of file h264.c.

Referenced by decode_update_thread_context().

#define IN_RANGE (   a,
  b,
  size 
)    (((a) >= (b)) && ((a) < ((b) + (size))))

Definition at line 1096 of file h264.c.

Referenced by copy_picture_range().

#define SIMPLE   1

Definition at line 1975 of file h264.c.

Referenced by hl_decode_mb(), and hl_decode_mb_444().

#define SIMPLE   0

Definition at line 1975 of file h264.c.

#define STARTCODE_TEST
Value:
if (i + 2 < length && src[i + 1] == 0 && src[i + 2] <= 3) { \
if (src[i + 2] != 3) { \
/* startcode, so we must be past the end */ \
length = i; \
} \
break; \
}
if(!(ptr_align%ac->ptr_align)&&samples_align >=aligned_len)

Referenced by ff_h264_decode_nal().

#define T (   x)    (x >> 2) | ((x << 2) & 0xF)

Referenced by init_scan_tables().

#define T (   x)    (x >> 3) | ((x & 7) << 3)
#define XCHG (   a,
  b,
  xchg 
)
Value:
if (pixel_shift) { \
if (xchg) { \
AV_SWAP64(b + 0, a + 0); \
AV_SWAP64(b + 8, a + 8); \
} else { \
} \
} else if (xchg) \
#define b
Definition: input.c:52
#define AV_COPY64(d, s)
Definition: intreadwrite.h:510
#define AV_SWAP64(a, b)
Definition: intreadwrite.h:524
#define AV_COPY128(d, s)
Definition: intreadwrite.h:514
if(!(ptr_align%ac->ptr_align)&&samples_align >=aligned_len)

Referenced by xchg_mb_border().

Function Documentation

static void await_references ( H264Context h)
static

Wait until all reference frames are available for MC operations.

Parameters
hthe H264 context

Definition at line 352 of file h264.c.

Referenced by hl_motion().

static av_always_inline void backup_mb_border ( H264Context h,
uint8_t src_y,
uint8_t src_cb,
uint8_t src_cr,
int  linesize,
int  uvlinesize,
int  simple 
)
static

Definition at line 1573 of file h264.c.

Referenced by loop_filter().

static int clone_slice ( H264Context dst,
H264Context src 
)
static

Replicate H264 "master" context to thread contexts.

Definition at line 2351 of file h264.c.

Referenced by decode_slice_header().

static void clone_tables ( H264Context dst,
H264Context src,
int  i 
)
static

Mimic alloc_tables(), but for every context thread.

Definition at line 921 of file h264.c.

Referenced by h264_slice_header_init().

static av_cold void common_init ( H264Context h)
static

Definition at line 967 of file h264.c.

Referenced by ff_h264_decode_init().

static int context_init ( H264Context h)
static

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

Definition at line 944 of file h264.c.

Referenced by decode_update_thread_context(), and h264_slice_header_init().

static void copy_parameter_set ( void **  to,
void **  from,
int  count,
int  size 
)
static

Definition at line 1113 of file h264.c.

Referenced by decode_update_thread_context().

static void copy_picture_range ( Picture **  to,
Picture **  from,
int  count,
MpegEncContext new_base,
MpegEncContext old_base 
)
static

Definition at line 1098 of file h264.c.

Referenced by decode_update_thread_context().

static av_always_inline int dctcoef_get ( DCTELEM mb,
int  high_bit_depth,
int  index 
)
static

Definition at line 1759 of file h264.c.

Referenced by hl_decode_mb(), hl_decode_mb_idct_luma(), and hl_decode_mb_predict_luma().

static av_always_inline void dctcoef_set ( DCTELEM mb,
int  high_bit_depth,
int  index,
int  value 
)
static

Definition at line 1768 of file h264.c.

Referenced by hl_decode_mb_predict_luma().

static void decode_finish_row ( H264Context h)
static

Draw edges and report progress for the last MB row.

Definition at line 3623 of file h264.c.

Referenced by decode_slice().

static int decode_frame ( AVCodecContext avctx,
void data,
int *  got_frame,
AVPacket avpkt 
)
static

Definition at line 4189 of file h264.c.

static int decode_init_thread_copy ( AVCodecContext avctx)
static

Definition at line 1128 of file h264.c.

static int decode_nal_units ( H264Context h,
const uint8_t buf,
int  buf_size,
int  parse_extradata 
)
static

< thread context

< number of NALs that need decoding before the next frame thread starts

Definition at line 3866 of file h264.c.

Referenced by decode_frame(), and ff_h264_decode_extradata().

static void decode_postinit ( H264Context h,
int  setup_finished 
)
static

Run setup operations that must be run after slice header decoding.

This includes finding the next displayed frame.

Parameters
hh264 master context
setup_finishedenough NALs have been read that we can call ff_thread_finish_setup()

Definition at line 1359 of file h264.c.

Referenced by decode_frame(), and decode_nal_units().

static int decode_rbsp_trailing ( H264Context h,
const uint8_t src 
)
static

Identify the exact end of the bitstream.

Returns
the length of the trailing, or 0 if damaged

Definition at line 280 of file h264.c.

Referenced by decode_nal_units().

static int decode_slice ( struct AVCodecContext avctx,
void arg 
)
static

Definition at line 3655 of file h264.c.

Referenced by execute_decode_slices().

static int decode_slice_header ( H264Context h,
H264Context h0 
)
static

Decode a slice header.

This will also call ff_MPV_common_init() and frame_start() as needed.

Parameters
hh264context
h0h264 master context (differs from 'h' when doing sliced based parallel decoding)
Returns
0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded

Definition at line 2591 of file h264.c.

Referenced by decode_nal_units().

static int decode_update_thread_context ( AVCodecContext dst,
const AVCodecContext src 
)
static

Definition at line 1150 of file h264.c.

static int execute_decode_slices ( H264Context h,
int  context_count 
)
static

Call decode_slice() for each context.

Parameters
hh264 master context
context_countnumber of contexts to execute

Definition at line 3825 of file h264.c.

Referenced by decode_nal_units().

int ff_h264_alloc_tables ( H264Context h)

Allocate tables.

needs width/height

Definition at line 865 of file h264.c.

Referenced by decode_update_thread_context(), h264_slice_header_init(), and svq3_decode_init().

int ff_h264_check_intra4x4_pred_mode ( H264Context h)

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

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

Definition at line 80 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 and change the dc mode so it only uses the available blocks.

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

Definition at line 128 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)

Definition at line 989 of file h264.c.

Referenced by ff_h264_decode_init(), and h264_parse().

av_cold int ff_h264_decode_init ( AVCodecContext avctx)

Definition at line 1043 of file h264.c.

Referenced by svq3_decode_init().

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
consumedis the number of bytes used as input
lengthis the length of the array
dst_lengthis 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 170 of file h264.c.

Referenced by decode_nal_units(), and parse_nal_units().

int ff_h264_frame_start ( H264Context h)

Definition at line 1287 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 4276 of file h264.c.

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

int ff_h264_get_profile ( SPS sps)

Compute profile from profile_idc and constraint_set?_flags.

compute profile from sps

Parameters
spsSPS
Returns
profile as defined by FF_PROFILE_H264_*

Definition at line 2393 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 3290 of file h264.c.

Referenced by decode_slice(), and fill_slice_long().

void ff_h264_hl_decode_mb ( H264Context h)

Definition at line 1978 of file h264.c.

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

static int field_end ( H264Context h,
int  in_setup 
)
static

Definition at line 2290 of file h264.c.

Referenced by decode_frame(), and decode_slice_header().

static int fill_filter_caches ( H264Context h,
int  mb_type 
)
static
Returns
non zero if the loop filter can be skipped

Definition at line 3393 of file h264.c.

Referenced by loop_filter().

static av_always_inline void fill_filter_caches_inter ( H264Context h,
MpegEncContext *const  s,
int  mb_type,
int  top_xy,
int  left_xy[LEFT_MBS],
int  top_type,
int  left_type[LEFT_MBS],
int  mb_xy,
int  list 
)
static

Definition at line 3308 of file h264.c.

Referenced by fill_filter_caches().

static void flush_change ( H264Context h)
static

Definition at line 2141 of file h264.c.

Referenced by decode_slice_header(), and flush_dpb().

static void flush_dpb ( AVCodecContext avctx)
static

Definition at line 2160 of file h264.c.

static void free_tables ( H264Context h,
int  free_rbsp 
)
static

Definition at line 758 of file h264.c.

Referenced by ff_h264_alloc_tables(), ff_h264_free_context(), and h264_slice_header_init().

static int get_consumed_bytes ( MpegEncContext s,
int  pos,
int  buf_size 
)
static

Return the number of bytes consumed for building the current frame.

Definition at line 4179 of file h264.c.

Referenced by decode_frame().

static int get_lowest_part_list_y ( H264Context h,
Picture pic,
int  n,
int  height,
int  y_offset,
int  list 
)
inlinestatic

Definition at line 295 of file h264.c.

Referenced by get_lowest_part_y().

static void get_lowest_part_y ( H264Context h,
int  refs[2][48],
int  n,
int  height,
int  y_offset,
int  list0,
int  list1,
int *  nrefs 
)
inlinestatic

Definition at line 308 of file h264.c.

Referenced by await_references().

static enum PixelFormat get_pixel_format ( H264Context h)
static

Definition at line 2460 of file h264.c.

Referenced by decode_slice_header().

static av_cold int h264_decode_end ( AVCodecContext avctx)
static

Definition at line 4289 of file h264.c.

static int h264_set_parameter_from_sps ( H264Context h)
static

Definition at line 2413 of file h264.c.

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

static int h264_slice_header_init ( H264Context h,
int  reinit 
)
static

Definition at line 2511 of file h264.c.

Referenced by decode_slice_header(), and decode_update_thread_context().

static av_always_inline void hl_decode_mb_idct_luma ( H264Context h,
int  mb_type,
int  is_h264,
int  simple,
int  transform_bypass,
int  pixel_shift,
int *  block_offset,
int  linesize,
uint8_t dest_y,
int  p 
)
static

Definition at line 1895 of file h264.c.

Referenced by hl_decode_mb(), and hl_decode_mb_444().

static av_always_inline void hl_decode_mb_predict_luma ( H264Context h,
int  mb_type,
int  is_h264,
int  simple,
int  transform_bypass,
int  pixel_shift,
int *  block_offset,
int  linesize,
uint8_t dest_y,
int  p 
)
static

Definition at line 1777 of file h264.c.

Referenced by hl_decode_mb(), and hl_decode_mb_444().

static void idr ( H264Context h)
static

instantaneous decoder refresh.

Definition at line 2131 of file h264.c.

Referenced by decode_nal_units(), flush_change(), and h264_probe().

static void implicit_weight_table ( H264Context h,
int  field 
)
static

Initialize implicit_weight table.

Parameters
field0/1 initialize the weight for interlaced MBAFF -1 initializes the rest

Definition at line 2066 of file h264.c.

Referenced by decode_slice_header().

static void init_dequant4_coeff_table ( H264Context h)
static

Definition at line 822 of file h264.c.

Referenced by init_dequant_tables().

static void init_dequant8_coeff_table ( H264Context h)
static

Definition at line 795 of file h264.c.

Referenced by init_dequant_tables().

static void init_dequant_tables ( H264Context h)
static

Definition at line 848 of file h264.c.

Referenced by decode_slice_header(), and ff_h264_alloc_tables().

static int init_poc ( H264Context h)
static

Definition at line 2175 of file h264.c.

Referenced by decode_slice_header().

static void init_scan_tables ( H264Context h)
static

initialize scan tables

Definition at line 2256 of file h264.c.

Referenced by h264_slice_header_init().

static void loop_filter ( H264Context h,
int  start_x,
int  end_x 
)
static

Definition at line 3539 of file h264.c.

Referenced by decode_slice(), and xmv_read_extradata().

static av_always_inline void mc_dir_part ( H264Context h,
Picture pic,
int  n,
int  square,
int  height,
int  delta,
int  list,
uint8_t dest_y,
uint8_t dest_cb,
uint8_t dest_cr,
int  src_x_offset,
int  src_y_offset,
qpel_mc_func qpix_op,
h264_chroma_mc_func  chroma_op,
int  pixel_shift,
int  chroma_idc 
)
static

Definition at line 461 of file h264.c.

Referenced by mc_part_std(), and mc_part_weighted().

static av_always_inline void mc_part_std ( H264Context h,
int  n,
int  square,
int  height,
int  delta,
uint8_t dest_y,
uint8_t dest_cb,
uint8_t dest_cr,
int  x_offset,
int  y_offset,
qpel_mc_func qpix_put,
h264_chroma_mc_func  chroma_put,
qpel_mc_func qpix_avg,
h264_chroma_mc_func  chroma_avg,
int  list0,
int  list1,
int  pixel_shift,
int  chroma_idc 
)
static

Definition at line 575 of file h264.c.

static av_always_inline void mc_part_weighted ( H264Context h,
int  n,
int  square,
int  height,
int  delta,
uint8_t dest_y,
uint8_t dest_cb,
uint8_t dest_cr,
int  x_offset,
int  y_offset,
qpel_mc_func qpix_put,
h264_chroma_mc_func  chroma_put,
h264_weight_func  luma_weight_op,
h264_weight_func  chroma_weight_op,
h264_biweight_func  luma_weight_avg,
h264_biweight_func  chroma_weight_avg,
int  list0,
int  list1,
int  pixel_shift,
int  chroma_idc 
)
static

Definition at line 623 of file h264.c.

Referenced by mc_part().

static int pred_weight_table ( H264Context h)
static

Definition at line 1998 of file h264.c.

Referenced by decode_slice_header().

static void predict_field_decoding_flag ( H264Context h)
static

Definition at line 3609 of file h264.c.

Referenced by decode_slice().

static av_always_inline void prefetch_motion ( H264Context h,
int  list,
int  pixel_shift,
int  chroma_idc 
)
static

Definition at line 731 of file h264.c.

Referenced by hl_motion().

static av_always_inline void xchg_mb_border ( H264Context h,
uint8_t src_y,
uint8_t src_cb,
uint8_t src_cr,
int  linesize,
int  uvlinesize,
int  xchg,
int  chroma444,
int  simple,
int  pixel_shift 
)
static

Definition at line 1670 of file h264.c.

Referenced by hl_decode_mb(), and hl_decode_mb_444().

Variable Documentation

const uint8_t div6[QP_MAX_NUM+1]
static
Initial value:
= {
0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3,
3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6,
7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10,
}

Definition at line 56 of file h264.c.

Referenced by init_dequant4_coeff_table(), and init_dequant8_coeff_table().

AVCodec ff_h264_decoder
Initial value:
= {
.name = "h264",
.priv_data_size = sizeof(H264Context),
.capabilities = CODEC_CAP_DR1 |
.long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
}
av_cold int ff_h264_decode_init(AVCodecContext *avctx)
Definition: h264.c:1043
static int decode_update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
Definition: h264.c:1150
struct H264Context H264Context
H264Context.
static int decode_init_thread_copy(AVCodecContext *avctx)
Definition: h264.c:1128
static int decode(MimicContext *ctx, int quality, int num_coeffs, int is_iframe)
Definition: mimic.c:228
static int init(AVCodecParserContext *s)
Definition: h264_parser.c:335
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:88
static void flush_dpb(AVCodecContext *avctx)
Definition: h264.c:2160
#define ONLY_IF_THREADS_ENABLED(x)
Define a function with only the non-default version specified.
Definition: internal.h:128
static void close(AVCodecParserContext *s)
Definition: h264_parser.c:326
static av_cold int h264_decode_end(AVCodecContext *avctx)
Definition: h264.c:4289
static av_cold void flush(AVCodecContext *avctx)
Flush (reset) the frame ID after seeking.
Definition: alsdec.c:1772
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: h264.c:4189
static const AVProfile profiles[]
Definition: h264.c:4303

Definition at line 4320 of file h264.c.

const uint16_t ff_h264_mb_sizes[4] = { 256, 384, 512, 768 }

Definition at line 48 of file h264.c.

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

enum AVPixelFormat hwaccel_pixfmt_list_h264_jpeg_420[]
static
Initial value:
= {
}
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of PIX_FMT_YUV420P and setting color_...
Definition: pixfmt.h:77

Definition at line 62 of file h264.c.

Referenced by get_pixel_format().

const AVProfile profiles[]
static
Initial value:
= {
{ FF_PROFILE_H264_BASELINE, "Baseline" },
{ FF_PROFILE_H264_CONSTRAINED_BASELINE, "Constrained Baseline" },
{ FF_PROFILE_H264_MAIN, "Main" },
{ FF_PROFILE_H264_EXTENDED, "Extended" },
{ FF_PROFILE_H264_HIGH, "High" },
{ FF_PROFILE_H264_HIGH_10, "High 10" },
{ FF_PROFILE_H264_HIGH_10_INTRA, "High 10 Intra" },
{ FF_PROFILE_H264_HIGH_422, "High 4:2:2" },
{ FF_PROFILE_H264_HIGH_422_INTRA, "High 4:2:2 Intra" },
{ FF_PROFILE_H264_HIGH_444, "High 4:4:4" },
{ FF_PROFILE_H264_HIGH_444_PREDICTIVE, "High 4:4:4 Predictive" },
{ FF_PROFILE_H264_HIGH_444_INTRA, "High 4:4:4 Intra" },
{ FF_PROFILE_H264_CAVLC_444, "CAVLC 4:4:4" },
}

Definition at line 4303 of file h264.c.

const uint8_t rem6[QP_MAX_NUM+1]
static
Initial value:
= {
0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2,
3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5,
0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3,
}

Definition at line 50 of file h264.c.

Referenced by init_dequant4_coeff_table(), and init_dequant8_coeff_table().