gdv.c File Reference

#include "libavutil/common.h"
#include "avcodec.h"
#include "bytestream.h"
#include "codec_internal.h"
#include "decode.h"

Go to the source code of this file.

Data Structures
struct	GDVContext
struct	Bits8
struct	Bits32

Macros
#define	PREAMBLE_SIZE   4096

Functions
static av_cold int	gdv_decode_init (AVCodecContext *avctx)
static void	scaleup (uint8_t *dst, const uint8_t *src, int w)
static void	scaleup_rev (uint8_t *dst, const uint8_t *src, int w)
static void	scaledown (uint8_t *dst, const uint8_t *src, int w)
static void	rescale (GDVContext *gdv, uint8_t *dst, int w, int h, int scale_v, int scale_h)
static int	read_bits2 (Bits8 *bits, GetByteContext *gb)
static void	fill_bits32 (Bits32 *bits, GetByteContext *gb)
static int	read_bits32 (Bits32 *bits, GetByteContext *gb, int nbits)
static void	lz_copy (PutByteContext *pb, GetByteContext *g2, int offset, unsigned len)
static int	decompress_2 (AVCodecContext *avctx)
static int	decompress_5 (AVCodecContext *avctx, unsigned skip)
static int	decompress_68 (AVCodecContext *avctx, unsigned skip, unsigned use8)
static int	gdv_decode_frame (AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *avpkt)
static av_cold int	gdv_decode_close (AVCodecContext *avctx)

Variables
const FFCodec	ff_gdv_decoder

Macro Definition Documentation

PREAMBLE_SIZE

#define PREAMBLE_SIZE   4096

Definition at line 52 of file gdv.c.

Function Documentation

gdv_decode_init()

static av_cold int gdv_decode_init ( AVCodecContext *  avctx )

static

Definition at line 54 of file gdv.c.

scaleup()

static void scaleup ( uint8_t *  dst, const uint8_t *  src, int  w  )

static

Definition at line 76 of file gdv.c.

Referenced by gdv_decode_frame().

scaleup_rev()

static void scaleup_rev ( uint8_t *  dst, const uint8_t *  src, int  w  )

static

Definition at line 94 of file gdv.c.

Referenced by rescale().

scaledown()

static void scaledown ( uint8_t *  dst, const uint8_t *  src, int  w  )

static

Definition at line 113 of file gdv.c.

Referenced by rescale().

rescale()

static void rescale ( GDVContext *  gdv, uint8_t *  dst, int  w, int  h, int  scale_v, int  scale_h  )

static

Definition at line 131 of file gdv.c.

Referenced by gdv_decode_frame(), and silk_decode_frame().

read_bits2()

static int read_bits2 ( Bits8 *  bits, GetByteContext *  gb  )

static

Definition at line 179 of file gdv.c.

Referenced by decompress_2(), and decompress_5().

fill_bits32()

static void fill_bits32 ( Bits32 *  bits, GetByteContext *  gb  )

static

Definition at line 194 of file gdv.c.

Referenced by decompress_68().

read_bits32()

static int read_bits32 ( Bits32 *  bits, GetByteContext *  gb, int  nbits  )

static

Definition at line 200 of file gdv.c.

Referenced by decompress_68().

lz_copy()

static void lz_copy ( PutByteContext *  pb, GetByteContext *  g2, int  offset, unsigned  len  )

static

Definition at line 214 of file gdv.c.

Referenced by decompress_2(), decompress_5(), and decompress_68().

decompress_2()

static int decompress_2 ( AVCodecContext *  avctx )

static

Definition at line 243 of file gdv.c.

Referenced by gdv_decode_frame().

decompress_5()

static int decompress_5 ( AVCodecContext *  avctx, unsigned  skip  )

static

Definition at line 285 of file gdv.c.

Referenced by gdv_decode_frame().

decompress_68()

static int decompress_68 ( AVCodecContext *  avctx, unsigned  skip, unsigned  use8  )

static

Definition at line 332 of file gdv.c.

Referenced by gdv_decode_frame().

gdv_decode_frame()

static int gdv_decode_frame ( AVCodecContext *  avctx, AVFrame *  frame, int *  got_frame, AVPacket *  avpkt  )

static

Definition at line 458 of file gdv.c.

gdv_decode_close()

static av_cold int gdv_decode_close ( AVCodecContext *  avctx )

static

Definition at line 555 of file gdv.c.

Variable Documentation

ff_gdv_decoder

const FFCodec ff_gdv_decoder

Initial value:

= {
    .p.name         = "gdv",
    CODEC_LONG_NAME("Gremlin Digital Video"),
    .p.type         = AVMEDIA_TYPE_VIDEO,
    .p.id           = AV_CODEC_ID_GDV,
    .priv_data_size = sizeof(GDVContext),
    .init           = gdv_decode_init,
    .close          = gdv_decode_close,
    FF_CODEC_DECODE_CB(gdv_decode_frame),
    .p.capabilities = AV_CODEC_CAP_DR1,
}

Definition at line 562 of file gdv.c.