FFmpeg  4.0
Data Structures | Macros | Functions | Variables
dnxhddec.c File Reference
#include "libavutil/imgutils.h"
#include "libavutil/timer.h"
#include "avcodec.h"
#include "blockdsp.h"
#include "get_bits.h"
#include "dnxhddata.h"
#include "idctdsp.h"
#include "internal.h"
#include "profiles.h"
#include "thread.h"

Go to the source code of this file.

Data Structures

struct  RowContext
 
struct  DNXHDContext
 

Macros

#define UNCHECKED_BITSTREAM_READER   1
 
#define DNXHD_VLC_BITS   9
 
#define DNXHD_DC_VLC_BITS   7
 

Functions

static int dnxhd_decode_dct_block_8 (const DNXHDContext *ctx, RowContext *row, int n)
 
static int dnxhd_decode_dct_block_10 (const DNXHDContext *ctx, RowContext *row, int n)
 
static int dnxhd_decode_dct_block_10_444 (const DNXHDContext *ctx, RowContext *row, int n)
 
static int dnxhd_decode_dct_block_12 (const DNXHDContext *ctx, RowContext *row, int n)
 
static int dnxhd_decode_dct_block_12_444 (const DNXHDContext *ctx, RowContext *row, int n)
 
static av_cold int dnxhd_decode_init (AVCodecContext *avctx)
 
static int dnxhd_init_vlc (DNXHDContext *ctx, uint32_t cid, int bitdepth)
 
static av_cold int dnxhd_decode_init_thread_copy (AVCodecContext *avctx)
 
static int dnxhd_get_profile (int cid)
 
static int dnxhd_decode_header (DNXHDContext *ctx, AVFrame *frame, const uint8_t *buf, int buf_size, int first_field)
 
static av_always_inline int dnxhd_decode_dct_block (const DNXHDContext *ctx, RowContext *row, int n, int index_bits, int level_bias, int level_shift, int dc_shift)
 
static int dnxhd_decode_macroblock (const DNXHDContext *ctx, RowContext *row, AVFrame *frame, int x, int y)
 
static int dnxhd_decode_row (AVCodecContext *avctx, void *data, int rownb, int threadnb)
 
static int dnxhd_decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
 
static av_cold int dnxhd_decode_close (AVCodecContext *avctx)
 

Variables

AVCodec ff_dnxhd_decoder
 

Macro Definition Documentation

◆ UNCHECKED_BITSTREAM_READER

#define UNCHECKED_BITSTREAM_READER   1

Definition at line 31 of file dnxhddec.c.

◆ DNXHD_VLC_BITS

#define DNXHD_VLC_BITS   9

Definition at line 76 of file dnxhddec.c.

Referenced by dnxhd_decode_dct_block(), and dnxhd_init_vlc().

◆ DNXHD_DC_VLC_BITS

#define DNXHD_DC_VLC_BITS   7

Definition at line 77 of file dnxhddec.c.

Referenced by dnxhd_decode_dct_block(), and dnxhd_init_vlc().

Function Documentation

◆ dnxhd_decode_dct_block_8()

static int dnxhd_decode_dct_block_8 ( const DNXHDContext *  ctx,
RowContext *  row,
int  n 
)
static

Definition at line 448 of file dnxhddec.c.

Referenced by dnxhd_decode_header().

◆ dnxhd_decode_dct_block_10()

static int dnxhd_decode_dct_block_10 ( const DNXHDContext *  ctx,
RowContext *  row,
int  n 
)
static

Definition at line 454 of file dnxhddec.c.

Referenced by dnxhd_decode_header().

◆ dnxhd_decode_dct_block_10_444()

static int dnxhd_decode_dct_block_10_444 ( const DNXHDContext *  ctx,
RowContext *  row,
int  n 
)
static

Definition at line 460 of file dnxhddec.c.

Referenced by dnxhd_decode_header().

◆ dnxhd_decode_dct_block_12()

static int dnxhd_decode_dct_block_12 ( const DNXHDContext *  ctx,
RowContext *  row,
int  n 
)
static

Definition at line 466 of file dnxhddec.c.

Referenced by dnxhd_decode_header().

◆ dnxhd_decode_dct_block_12_444()

static int dnxhd_decode_dct_block_12_444 ( const DNXHDContext *  ctx,
RowContext *  row,
int  n 
)
static

Definition at line 472 of file dnxhddec.c.

Referenced by dnxhd_decode_header().

◆ dnxhd_decode_init()

static av_cold int dnxhd_decode_init ( AVCodecContext *  avctx)
static

Definition at line 90 of file dnxhddec.c.

◆ dnxhd_init_vlc()

static int dnxhd_init_vlc ( DNXHDContext *  ctx,
uint32_t  cid,
int  bitdepth 
)
static

Definition at line 110 of file dnxhddec.c.

Referenced by dnxhd_decode_header().

◆ dnxhd_decode_init_thread_copy()

static av_cold int dnxhd_decode_init_thread_copy ( AVCodecContext *  avctx)
static

Definition at line 146 of file dnxhddec.c.

◆ dnxhd_get_profile()

static int dnxhd_get_profile ( int  cid)
static

Definition at line 161 of file dnxhddec.c.

Referenced by dnxhd_decode_header().

◆ dnxhd_decode_header()

static int dnxhd_decode_header ( DNXHDContext *  ctx,
AVFrame *  frame,
const uint8_t *  buf,
int  buf_size,
int  first_field 
)
static

Definition at line 178 of file dnxhddec.c.

Referenced by dnxhd_decode_frame().

◆ dnxhd_decode_dct_block()

static av_always_inline int dnxhd_decode_dct_block ( const DNXHDContext *  ctx,
RowContext *  row,
int  n,
int  index_bits,
int  level_bias,
int  level_shift,
int  dc_shift 
)
static

Definition at line 343 of file dnxhddec.c.

Referenced by dnxhd_decode_dct_block_10(), dnxhd_decode_dct_block_10_444(), dnxhd_decode_dct_block_12(), dnxhd_decode_dct_block_12_444(), and dnxhd_decode_dct_block_8().

◆ dnxhd_decode_macroblock()

static int dnxhd_decode_macroblock ( const DNXHDContext *  ctx,
RowContext *  row,
AVFrame *  frame,
int  x,
int  y 
)
static

Definition at line 478 of file dnxhddec.c.

Referenced by dnxhd_decode_row().

◆ dnxhd_decode_row()

static int dnxhd_decode_row ( AVCodecContext *  avctx,
void *  data,
int  rownb,
int  threadnb 
)
static

Definition at line 580 of file dnxhddec.c.

Referenced by dnxhd_decode_frame().

◆ dnxhd_decode_frame()

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

Definition at line 605 of file dnxhddec.c.

◆ dnxhd_decode_close()

static av_cold int dnxhd_decode_close ( AVCodecContext *  avctx)
static

Definition at line 705 of file dnxhddec.c.

Variable Documentation

◆ ff_dnxhd_decoder

AVCodec ff_dnxhd_decoder
Initial value:
= {
.name = "dnxhd",
.long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_DNXHD,
.priv_data_size = sizeof(DNXHDContext),
.init = dnxhd_decode_init,
.close = dnxhd_decode_close,
.decode = dnxhd_decode_frame,
.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
AV_CODEC_CAP_SLICE_THREADS,
.init_thread_copy = ONLY_IF_THREADS_ENABLED(dnxhd_decode_init_thread_copy),
.profiles = NULL_IF_CONFIG_SMALL(ff_dnxhd_profiles),
}
AV_CODEC_ID_DNXHD
Definition: avcodec.h:317
init_thread_copy
static int init_thread_copy(AVCodecContext *avctx)
Definition: tta.c:392
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
dnxhd_decode_init_thread_copy
static av_cold int dnxhd_decode_init_thread_copy(AVCodecContext *avctx)
Definition: dnxhddec.c:146
decode
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:42
dnxhd_decode_close
static av_cold int dnxhd_decode_close(AVCodecContext *avctx)
Definition: dnxhddec.c:705
ff_dnxhd_profiles
const AVProfile ff_dnxhd_profiles[]
Definition: profiles.c:49
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
AV_CODEC_CAP_FRAME_THREADS
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:1015
ONLY_IF_THREADS_ENABLED
#define ONLY_IF_THREADS_ENABLED(x)
Define a function with only the non-default version specified.
Definition: internal.h:225
AV_CODEC_CAP_SLICE_THREADS
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:1019
dnxhd_decode_frame
static int dnxhd_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: dnxhddec.c:605
AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:959
dnxhd_decode_init
static av_cold int dnxhd_decode_init(AVCodecContext *avctx)
Definition: dnxhddec.c:90

Definition at line 718 of file dnxhddec.c.

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