FFmpeg: libavcodec/vmdvideo.c File Reference

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libavcodec

Data Structures | Macros | Functions | Variables

vmdvideo.c File Reference

Sierra VMD video decoder by Vladimir "VAG" Gneushev (vagsoft at mail.ru) for more information on the Sierra VMD format, visit: http://www.pcisys.net/~melanson/codecs/. More...

#include <string.h>
#include "libavutil/common.h"
#include "libavutil/intreadwrite.h"
#include "avcodec.h"
#include "internal.h"
#include "bytestream.h"

Go to the source code of this file.

Data Structures

struct VmdVideoContext

Macros

#define VMD_HEADER_SIZE 0x330

#define PALETTE_COUNT 256

#define QUEUE_SIZE 0x1000

#define QUEUE_MASK 0x0FFF

Functions

static int lz_unpack (const unsigned char *src, int src_len, unsigned char *dest, int dest_len)

static int rle_unpack (const unsigned char *src, unsigned char *dest, int src_count, int src_size, int dest_len)

static int vmd_decode (VmdVideoContext *s, AVFrame *frame)

static av_cold int vmdvideo_decode_end (AVCodecContext *avctx)

static av_cold int vmdvideo_decode_init (AVCodecContext *avctx)

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

Variables

AVCodec ff_vmdvideo_decoder

Detailed Description

Sierra VMD video decoder by Vladimir "VAG" Gneushev (vagsoft at mail.ru) for more information on the Sierra VMD format, visit: http://www.pcisys.net/~melanson/codecs/.

The video decoder outputs PAL8 colorspace data. The decoder expects a 0x330-byte VMD file header to be transmitted via extradata during codec initialization. Each encoded frame that is sent to this decoder is expected to be prepended with the appropriate 16-byte frame information record from the VMD file.

Definition in file vmdvideo.c.

Macro Definition Documentation

#define VMD_HEADER_SIZE 0x330

Definition at line 45 of file vmdvideo.c.

Referenced by vmdvideo_decode_init().

#define PALETTE_COUNT 256

Definition at line 46 of file vmdvideo.c.

Referenced by vmd_decode(), vmdvideo_decode_frame(), and vmdvideo_decode_init().

#define QUEUE_SIZE 0x1000

Definition at line 63 of file vmdvideo.c.

Referenced by lz_unpack().

#define QUEUE_MASK 0x0FFF

Definition at line 64 of file vmdvideo.c.

Referenced by lz_unpack().

Function Documentation

static int lz_unpack ( const unsigned char * src,

int src_len,

unsigned char * dest,

int dest_len

)

static

Definition at line 66 of file vmdvideo.c.

Referenced by vmd_decode().

static int rle_unpack ( const unsigned char * src,

unsigned char * dest,

int src_count,

int src_size,

int dest_len

)

static

Definition at line 139 of file vmdvideo.c.

Referenced by vmd_decode().

static int vmd_decode ( VmdVideoContext * s,

AVFrame * frame

)

static

Definition at line 183 of file vmdvideo.c.

Referenced by vmdvideo_decode_frame().

static av_cold int vmdvideo_decode_end ( AVCodecContext * avctx )

static

Definition at line 370 of file vmdvideo.c.

Referenced by vmdvideo_decode_init().

static av_cold int vmdvideo_decode_init ( AVCodecContext * avctx )

static

Definition at line 381 of file vmdvideo.c.

static int vmdvideo_decode_frame ( AVCodecContext * avctx,

void * data,

int * got_frame,

AVPacket * avpkt

)

static

Definition at line 429 of file vmdvideo.c.

Variable Documentation

AVCodec ff_vmdvideo_decoder

Initial value:

= {

.name = "vmdvideo",

.long_name = NULL_IF_CONFIG_SMALL("Sierra VMD video"),

.type = AVMEDIA_TYPE_VIDEO,

.id = AV_CODEC_ID_VMDVIDEO,

.priv_data_size = sizeof(VmdVideoContext),

.init = vmdvideo_decode_init,

.close = vmdvideo_decode_end,

.decode = vmdvideo_decode_frame,

.capabilities = CODEC_CAP_DR1,

}

Definition at line 465 of file vmdvideo.c.

Generated on Sun Mar 8 2015 02:35:25 for FFmpeg by doxygen 1.8.2