mmvideo.c File Reference

American Laser Games MM Video Decoder by Peter Ross (pross.nosp@m.@xvi.nosp@m.d.org) More...

#include "libavutil/intreadwrite.h"
#include "avcodec.h"
#include "bytestream.h"
#include "internal.h"

Include dependency graph for mmvideo.c:

Go to the source code of this file.

Data Structures
struct	MmContext

Macros
#define	MM_PREAMBLE_SIZE   6
#define	MM_TYPE_INTER   0x5
#define	MM_TYPE_INTRA   0x8
#define	MM_TYPE_INTRA_HH   0xc
#define	MM_TYPE_INTER_HH   0xd
#define	MM_TYPE_INTRA_HHV   0xe
#define	MM_TYPE_INTER_HHV   0xf
#define	MM_TYPE_PALETTE   0x31

Typedefs
typedef struct MmContext	MmContext

Functions
static av_cold int	mm_decode_init (AVCodecContext *avctx)
static int	mm_decode_pal (MmContext *s)
static int	mm_decode_intra (MmContext *s, int half_horiz, int half_vert)
static int	mm_decode_inter (MmContext *s, int half_horiz, int half_vert)
static int	mm_decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
static av_cold int	mm_decode_end (AVCodecContext *avctx)

Variables
AVCodec	ff_mmvideo_decoder

Detailed Description

American Laser Games MM Video Decoder by Peter Ross (pross.nosp@m.@xvi.nosp@m.d.org)

The MM format was used by IBM-PC ports of ALG's "arcade shooter" games, including Mad Dog McCree and Crime Patrol.

Technical details here: http://wiki.multimedia.cx/index.php?title=American_Laser_Games_MM

Definition in file mmvideo.c.

Macro Definition Documentation

#define MM_PREAMBLE_SIZE   6

Definition at line 39 of file mmvideo.c.

Referenced by mm_decode_frame().

#define MM_TYPE_INTER   0x5

Definition at line 41 of file mmvideo.c.

Referenced by mm_decode_frame().

#define MM_TYPE_INTER_HH   0xd

Definition at line 44 of file mmvideo.c.

Referenced by mm_decode_frame().

#define MM_TYPE_INTER_HHV   0xf

Definition at line 46 of file mmvideo.c.

Referenced by mm_decode_frame().

#define MM_TYPE_INTRA   0x8

Definition at line 42 of file mmvideo.c.

Referenced by mm_decode_frame().

#define MM_TYPE_INTRA_HH   0xc

Definition at line 43 of file mmvideo.c.

Referenced by mm_decode_frame().

#define MM_TYPE_INTRA_HHV   0xe

Definition at line 45 of file mmvideo.c.

Referenced by mm_decode_frame().

#define MM_TYPE_PALETTE   0x31

Definition at line 47 of file mmvideo.c.

Referenced by mm_decode_frame().

Typedef Documentation

typedef struct MmContext MmContext

Function Documentation

static av_cold int mm_decode_end ( AVCodecContext *  avctx )

static

Definition at line 219 of file mmvideo.c.

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

static

Definition at line 175 of file mmvideo.c.

static av_cold int mm_decode_init ( AVCodecContext *  avctx )

static

Definition at line 56 of file mmvideo.c.

static int mm_decode_inter ( MmContext *  s, int  half_horiz, int  half_vert  )

static

Parameters

half_horiz	Half horizontal resolution (0 or 1)
half_vert	Half vertical resolution (0 or 1)

Definition at line 127 of file mmvideo.c.

Referenced by mm_decode_frame().

static int mm_decode_intra ( MmContext *  s, int  half_horiz, int  half_vert  )

static

Parameters

half_horiz	Half horizontal resolution (0 or 1)
half_vert	Half vertical resolution (0 or 1)

Definition at line 86 of file mmvideo.c.

Referenced by mm_decode_frame().

static int mm_decode_pal ( MmContext *  s )

static

Definition at line 69 of file mmvideo.c.

Referenced by mm_decode_frame().

Variable Documentation

AVCodec ff_mmvideo_decoder

Initial value:

= {
    .name           = "mmvideo",
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_MMVIDEO,
    .priv_data_size = sizeof(MmContext),
    .init           = mm_decode_init,
    .close          = mm_decode_end,
    .decode         = mm_decode_frame,
    .capabilities   = CODEC_CAP_DR1,
    .long_name      = NULL_IF_CONFIG_SMALL("American Laser Games MM Video"),
}

Definition at line 228 of file mmvideo.c.