dnxhddec.c File Reference

#include "libavutil/imgutils.h"
#include "libavutil/mem_internal.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 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
const AVCodec	ff_dnxhd_decoder

Macro Definition Documentation

UNCHECKED_BITSTREAM_READER

#define UNCHECKED_BITSTREAM_READER   1

Definition at line 32 of file dnxhddec.c.

DNXHD_VLC_BITS

#define DNXHD_VLC_BITS   9

Definition at line 79 of file dnxhddec.c.

DNXHD_DC_VLC_BITS

#define DNXHD_DC_VLC_BITS   7

Definition at line 80 of file dnxhddec.c.

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 456 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 462 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 468 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 474 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 480 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 93 of file dnxhddec.c.

dnxhd_init_vlc()

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

static

Definition at line 113 of file dnxhddec.c.

Referenced by dnxhd_decode_header().

dnxhd_get_profile()

static int dnxhd_get_profile ( int  cid )

static

Definition at line 158 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 175 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 351 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 486 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 588 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 615 of file dnxhddec.c.

dnxhd_decode_close()

static av_cold int dnxhd_decode_close ( AVCodecContext *  avctx )

static

Definition at line 715 of file dnxhddec.c.

Variable Documentation

ff_dnxhd_decoder

const 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,
    .profiles       = NULL_IF_CONFIG_SMALL(ff_dnxhd_profiles),
    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
}

Definition at line 728 of file dnxhddec.c.