libavcodec/dnxhddec.c File Reference

#include "libavutil/imgutils.h"
#include "avcodec.h"
#include "get_bits.h"
#include "dnxhddata.h"
#include "dsputil.h"
#include "thread.h"

Go to the source code of this file.

Data Structures
struct	DNXHDContext
Defines
#define	DNXHD_VLC_BITS   9
#define	DNXHD_DC_VLC_BITS   7
Functions
static void	dnxhd_decode_dct_block_8 (DNXHDContext *ctx, DCTELEM *block, int n, int qscale)
static void	dnxhd_decode_dct_block_10 (DNXHDContext *ctx, DCTELEM *block, int n, int qscale)
static av_cold int	dnxhd_decode_init (AVCodecContext *avctx)
static int	dnxhd_init_vlc (DNXHDContext *ctx, int cid)
static int	dnxhd_decode_header (DNXHDContext *ctx, const uint8_t *buf, int buf_size, int first_field)
static av_always_inline void	dnxhd_decode_dct_block (DNXHDContext *ctx, DCTELEM *block, int n, int qscale, int index_bits, int level_bias, int level_shift)
static int	dnxhd_decode_macroblock (DNXHDContext *ctx, int x, int y)
static int	dnxhd_decode_macroblocks (DNXHDContext *ctx, const uint8_t *buf, int buf_size)
static int	dnxhd_decode_frame (AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt)
static av_cold int	dnxhd_decode_close (AVCodecContext *avctx)
Variables
AVCodec	ff_dnxhd_decoder

---

Define Documentation

#define DNXHD_DC_VLC_BITS   7

Definition at line 59 of file dnxhddec.c.

Referenced by dnxhd_decode_dct_block(), and dnxhd_init_vlc().

#define DNXHD_VLC_BITS   9

Definition at line 58 of file dnxhddec.c.

Referenced by dnxhd_decode_dct_block(), and dnxhd_init_vlc().

---

Function Documentation

static av_cold int dnxhd_decode_close

(

AVCodecContext *

avctx

)

[static]

Definition at line 413 of file dnxhddec.c.

static av_always_inline void dnxhd_decode_dct_block	(	DNXHDContext *	ctx,
		DCTELEM *	block,
		int	n,
		int	qscale,
		int	index_bits,
		int	level_bias,
		int	level_shift
	)			[static]

Definition at line 186 of file dnxhddec.c.

Referenced by dnxhd_decode_dct_block_10(), and dnxhd_decode_dct_block_8().

static void dnxhd_decode_dct_block_10	(	DNXHDContext *	ctx,
		DCTELEM *	block,
		int	n,
		int	qscale
	)			[static]

Definition at line 279 of file dnxhddec.c.

Referenced by dnxhd_decode_header().

static void dnxhd_decode_dct_block_8	(	DNXHDContext *	ctx,
		DCTELEM *	block,
		int	n,
		int	qscale
	)			[static]

Definition at line 273 of file dnxhddec.c.

Referenced by dnxhd_decode_header().

static int dnxhd_decode_frame	(	AVCodecContext *	avctx,
		void *	data,
		int *	data_size,
		AVPacket *	avpkt
	)			[static]

Definition at line 361 of file dnxhddec.c.

static int dnxhd_decode_header	(	DNXHDContext *	ctx,
		const uint8_t *	buf,
		int	buf_size,
		int	first_field
	)			[static]

Definition at line 107 of file dnxhddec.c.

Referenced by dnxhd_decode_frame().

static av_cold int dnxhd_decode_init

(

AVCodecContext *

avctx

)

[static]

Definition at line 64 of file dnxhddec.c.

static int dnxhd_decode_macroblock	(	DNXHDContext *	ctx,
		int	x,
		int	y
	)			[static]

Definition at line 285 of file dnxhddec.c.

Referenced by dnxhd_decode_macroblocks().

static int dnxhd_decode_macroblocks	(	DNXHDContext *	ctx,
		const uint8_t *	buf,
		int	buf_size
	)			[static]

Definition at line 344 of file dnxhddec.c.

Referenced by dnxhd_decode_frame().

static int dnxhd_init_vlc	(	DNXHDContext *	ctx,
		int	cid
	)			[static]

Definition at line 76 of file dnxhddec.c.

Referenced by dnxhd_decode_header(), and dnxhd_encode_init().

---

Variable Documentation

AVCodec ff_dnxhd_decoder

Initial value:

 {
    .name           = "dnxhd",
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = CODEC_ID_DNXHD,
    .priv_data_size = sizeof(DNXHDContext),
    .init           = dnxhd_decode_init,
    .close          = dnxhd_decode_close,
    .decode         = dnxhd_decode_frame,
    .capabilities   = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS,
    .long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
}

Definition at line 425 of file dnxhddec.c.