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_t * | ff_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 |
H.264 / AVC / MPEG4 part10 codec.
Definition in file h264.c.
#define copy_fields | ( | to, | |
from, | |||
start_field, | |||
end_field | |||
) |
Definition at line 1142 of file h264.c.
Referenced by decode_update_thread_context().
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 STARTCODE_TEST |
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) |
Referenced by xchg_mb_border().
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Wait until all reference frames are available for MC operations.
h | the H264 context |
Definition at line 352 of file h264.c.
Referenced by hl_motion().
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Definition at line 1573 of file h264.c.
Referenced by loop_filter().
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Replicate H264 "master" context to thread contexts.
Definition at line 2351 of file h264.c.
Referenced by decode_slice_header().
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Mimic alloc_tables(), but for every context thread.
Definition at line 921 of file h264.c.
Referenced by h264_slice_header_init().
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Definition at line 967 of file h264.c.
Referenced by ff_h264_decode_init().
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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().
Definition at line 1113 of file h264.c.
Referenced by decode_update_thread_context().
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Definition at line 1098 of file h264.c.
Referenced by decode_update_thread_context().
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Definition at line 1759 of file h264.c.
Referenced by hl_decode_mb(), hl_decode_mb_idct_luma(), and hl_decode_mb_predict_luma().
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Definition at line 1768 of file h264.c.
Referenced by hl_decode_mb_predict_luma().
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Draw edges and report progress for the last MB row.
Definition at line 3623 of file h264.c.
Referenced by decode_slice().
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< 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().
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Run setup operations that must be run after slice header decoding.
This includes finding the next displayed frame.
h | h264 master context |
setup_finished | enough 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().
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Identify the exact end of the bitstream.
Definition at line 280 of file h264.c.
Referenced by decode_nal_units().
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Definition at line 3655 of file h264.c.
Referenced by execute_decode_slices().
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Decode a slice header.
This will also call ff_MPV_common_init() and frame_start() as needed.
h | h264context |
h0 | h264 master context (differs from 'h' when doing sliced based parallel decoding) |
Definition at line 2591 of file h264.c.
Referenced by decode_nal_units().
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Call decode_slice() for each context.
h | h264 master context |
context_count | number 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.
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? |
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
sps | SPS |
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().
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Definition at line 2290 of file h264.c.
Referenced by decode_frame(), and decode_slice_header().
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Definition at line 3393 of file h264.c.
Referenced by loop_filter().
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Definition at line 3308 of file h264.c.
Referenced by fill_filter_caches().
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Definition at line 2141 of file h264.c.
Referenced by decode_slice_header(), and flush_dpb().
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Definition at line 758 of file h264.c.
Referenced by ff_h264_alloc_tables(), ff_h264_free_context(), and h264_slice_header_init().
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Return the number of bytes consumed for building the current frame.
Definition at line 4179 of file h264.c.
Referenced by decode_frame().
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Definition at line 295 of file h264.c.
Referenced by get_lowest_part_y().
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Definition at line 308 of file h264.c.
Referenced by await_references().
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Definition at line 2460 of file h264.c.
Referenced by decode_slice_header().
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Definition at line 2413 of file h264.c.
Referenced by decode_nal_units(), decode_slice_header(), and decode_update_thread_context().
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Definition at line 2511 of file h264.c.
Referenced by decode_slice_header(), and decode_update_thread_context().
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Definition at line 1895 of file h264.c.
Referenced by hl_decode_mb(), and hl_decode_mb_444().
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Definition at line 1777 of file h264.c.
Referenced by hl_decode_mb(), and hl_decode_mb_444().
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instantaneous decoder refresh.
Definition at line 2131 of file h264.c.
Referenced by decode_nal_units(), flush_change(), and h264_probe().
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Initialize implicit_weight table.
field | 0/1 initialize the weight for interlaced MBAFF -1 initializes the rest |
Definition at line 2066 of file h264.c.
Referenced by decode_slice_header().
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Definition at line 822 of file h264.c.
Referenced by init_dequant_tables().
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Definition at line 795 of file h264.c.
Referenced by init_dequant_tables().
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Definition at line 848 of file h264.c.
Referenced by decode_slice_header(), and ff_h264_alloc_tables().
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Definition at line 2175 of file h264.c.
Referenced by decode_slice_header().
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initialize scan tables
Definition at line 2256 of file h264.c.
Referenced by h264_slice_header_init().
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Definition at line 3539 of file h264.c.
Referenced by decode_slice(), and xmv_read_extradata().
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Definition at line 461 of file h264.c.
Referenced by mc_part_std(), and mc_part_weighted().
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Definition at line 1998 of file h264.c.
Referenced by decode_slice_header().
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Definition at line 3609 of file h264.c.
Referenced by decode_slice().
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Definition at line 731 of file h264.c.
Referenced by hl_motion().
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Definition at line 1670 of file h264.c.
Referenced by hl_decode_mb(), and hl_decode_mb_444().
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Definition at line 56 of file h264.c.
Referenced by init_dequant4_coeff_table(), and init_dequant8_coeff_table().
AVCodec ff_h264_decoder |
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().
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Definition at line 62 of file h264.c.
Referenced by get_pixel_format().
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Definition at line 50 of file h264.c.
Referenced by init_dequant4_coeff_table(), and init_dequant8_coeff_table().