libavcodec/mmvideo.c File Reference

American Laser Games MM Video Decoder by Peter Ross (pross@xvid.org). More...

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

Go to the source code of this file.

Data Structures
struct	MmContext
Defines
#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
Functions
static av_cold int	mm_decode_init (AVCodecContext *avctx)
static void	mm_decode_pal (MmContext *s, const uint8_t *buf, const uint8_t *buf_end)
static void	mm_decode_intra (MmContext *s, int half_horiz, int half_vert, const uint8_t *buf, int buf_size)
static void	mm_decode_inter (MmContext *s, int half_horiz, int half_vert, const uint8_t *buf, int buf_size)
static int	mm_decode_frame (AVCodecContext *avctx, void *data, int *data_size, 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@xvid.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.

---

Define Documentation

#define MM_PREAMBLE_SIZE   6

Definition at line 37 of file mmvideo.c.

Referenced by mm_decode_frame(), probe(), and read_packet().

#define MM_TYPE_INTER   0x5

Definition at line 39 of file mmvideo.c.

Referenced by mm_decode_frame(), and read_packet().

#define MM_TYPE_INTER_HH   0xd

Definition at line 42 of file mmvideo.c.

Referenced by mm_decode_frame(), and read_packet().

#define MM_TYPE_INTER_HHV   0xf

Definition at line 44 of file mmvideo.c.

Referenced by mm_decode_frame(), and read_packet().

#define MM_TYPE_INTRA   0x8

Definition at line 40 of file mmvideo.c.

Referenced by mm_decode_frame(), and read_packet().

#define MM_TYPE_INTRA_HH   0xc

Definition at line 41 of file mmvideo.c.

Referenced by mm_decode_frame(), and read_packet().

#define MM_TYPE_INTRA_HHV   0xe

Definition at line 43 of file mmvideo.c.

Referenced by mm_decode_frame(), and read_packet().

#define MM_TYPE_PALETTE   0x31

Definition at line 45 of file mmvideo.c.

Referenced by mm_decode_frame(), and read_packet().

---

Function Documentation

static av_cold int mm_decode_end

(

AVCodecContext *

avctx

)

[static]

Definition at line 207 of file mmvideo.c.

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

Definition at line 168 of file mmvideo.c.

static av_cold int mm_decode_init

(

AVCodecContext *

avctx

)

[static]

Definition at line 53 of file mmvideo.c.

static void mm_decode_inter	(	MmContext *	s,
		int	half_horiz,
		int	half_vert,
		const uint8_t *	buf,
		int	buf_size
	)			[static]

Definition at line 124 of file mmvideo.c.

Referenced by mm_decode_frame().

static void mm_decode_intra	(	MmContext *	s,
		int	half_horiz,
		int	half_vert,
		const uint8_t *	buf,
		int	buf_size
	)			[static]

Parameters:

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

Definition at line 82 of file mmvideo.c.

Referenced by mm_decode_frame().

static void mm_decode_pal	(	MmContext *	s,
		const uint8_t *	buf,
		const uint8_t *	buf_end
	)			[static]

Definition at line 67 of file mmvideo.c.

Referenced by mm_decode_frame().

---

Variable Documentation

AVCodec ff_mmvideo_decoder

Initial value:

 {
    .name           = "mmvideo",
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = 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 217 of file mmvideo.c.