FFmpeg: libavformat/ipmovie.c File Reference

Interplay MVE file demuxer by Mike Melanson (melan.nosp@m.son@.nosp@m.pcisy.nosp@m.s.ne.nosp@m.t) For more information regarding the Interplay MVE file format, visit: http://www.pcisys.net/~melanson/codecs/ The aforementioned site also contains a command line utility for parsing IP MVE files so that you can get a good idea of the typical structure of such files. More...

#include "libavutil/channel_layout.h"
#include "libavutil/intreadwrite.h"
#include "avformat.h"
#include "internal.h"

Go to the source code of this file.

Data Structures
struct	IPMVEContext

Macros
#define	CHUNK_PREAMBLE_SIZE 4

#define	OPCODE_PREAMBLE_SIZE 4

#define	CHUNK_INIT_AUDIO 0x0000

#define	CHUNK_AUDIO_ONLY 0x0001

#define	CHUNK_INIT_VIDEO 0x0002

#define	CHUNK_VIDEO 0x0003

#define	CHUNK_SHUTDOWN 0x0004

#define	CHUNK_END 0x0005

#define	CHUNK_DONE 0xFFFC

#define	CHUNK_NOMEM 0xFFFD

#define	CHUNK_EOF 0xFFFE

#define	CHUNK_BAD 0xFFFF

#define	OPCODE_END_OF_STREAM 0x00

#define	OPCODE_END_OF_CHUNK 0x01

#define	OPCODE_CREATE_TIMER 0x02

#define	OPCODE_INIT_AUDIO_BUFFERS 0x03

#define	OPCODE_START_STOP_AUDIO 0x04

#define	OPCODE_INIT_VIDEO_BUFFERS 0x05

#define	OPCODE_UNKNOWN_06 0x06

#define	OPCODE_SEND_BUFFER 0x07

#define	OPCODE_AUDIO_FRAME 0x08

#define	OPCODE_SILENCE_FRAME 0x09

#define	OPCODE_INIT_VIDEO_MODE 0x0A

#define	OPCODE_CREATE_GRADIENT 0x0B

#define	OPCODE_SET_PALETTE 0x0C

#define	OPCODE_SET_PALETTE_COMPRESSED 0x0D

#define	OPCODE_UNKNOWN_0E 0x0E

#define	OPCODE_SET_DECODING_MAP 0x0F

#define	OPCODE_UNKNOWN_10 0x10

#define	OPCODE_VIDEO_DATA 0x11

#define	OPCODE_UNKNOWN_12 0x12

#define	OPCODE_UNKNOWN_13 0x13

#define	OPCODE_UNKNOWN_14 0x14

#define	OPCODE_UNKNOWN_15 0x15

#define	PALETTE_COUNT 256

Functions
static int	load_ipmovie_packet (IPMVEContext s, AVIOContext pb, AVPacket *pkt)

static int	process_ipmovie_chunk (IPMVEContext s, AVIOContext pb, AVPacket *pkt)

static int	ipmovie_probe (AVProbeData *p)

static int	ipmovie_read_header (AVFormatContext *s)

static int	ipmovie_read_packet (AVFormatContext s, AVPacket pkt)

Variables
static const char	signature [] = "Interplay MVE File\x1A\0\x1A"

AVInputFormat	ff_ipmovie_demuxer

Detailed Description

Interplay MVE file demuxer by Mike Melanson (melan.nosp@m.son@.nosp@m.pcisy.nosp@m.s.ne.nosp@m.t) For more information regarding the Interplay MVE file format, visit: http://www.pcisys.net/~melanson/codecs/ The aforementioned site also contains a command line utility for parsing IP MVE files so that you can get a good idea of the typical structure of such files.

This demuxer is not the best example to use if you are trying to write your own as it uses a rather roundabout approach for splitting up and sending out the chunks.

Definition in file ipmovie.c.

Macro Definition Documentation

#define CHUNK_PREAMBLE_SIZE 4

Definition at line 40 of file ipmovie.c.

Referenced by ipmovie_read_header(), and process_ipmovie_chunk().

#define OPCODE_PREAMBLE_SIZE 4

Definition at line 41 of file ipmovie.c.

Referenced by process_ipmovie_chunk().

#define CHUNK_INIT_AUDIO 0x0000

Definition at line 43 of file ipmovie.c.

Referenced by ipmovie_read_header(), ipmovie_read_packet(), and process_ipmovie_chunk().

#define CHUNK_AUDIO_ONLY 0x0001

Definition at line 44 of file ipmovie.c.

Referenced by process_ipmovie_chunk().

#define CHUNK_INIT_VIDEO 0x0002

Definition at line 45 of file ipmovie.c.

Referenced by ipmovie_read_header(), ipmovie_read_packet(), and process_ipmovie_chunk().

#define CHUNK_VIDEO 0x0003

Definition at line 46 of file ipmovie.c.

Referenced by ipmovie_read_header(), ipmovie_read_packet(), load_ipmovie_packet(), and process_ipmovie_chunk().

#define CHUNK_SHUTDOWN 0x0004

Definition at line 47 of file ipmovie.c.

Referenced by process_ipmovie_chunk().

#define CHUNK_END 0x0005

Definition at line 48 of file ipmovie.c.

Referenced by process_ipmovie_chunk().

#define CHUNK_DONE 0xFFFC

Definition at line 50 of file ipmovie.c.

Referenced by load_ipmovie_packet(), and process_ipmovie_chunk().

#define CHUNK_NOMEM 0xFFFD

Definition at line 51 of file ipmovie.c.

Referenced by ipmovie_read_packet(), and load_ipmovie_packet().

#define CHUNK_EOF 0xFFFE

Definition at line 52 of file ipmovie.c.

Referenced by ipmovie_read_packet(), load_ipmovie_packet(), and process_ipmovie_chunk().

#define CHUNK_BAD 0xFFFF

Definition at line 53 of file ipmovie.c.

Referenced by ipmovie_read_packet(), load_ipmovie_packet(), and process_ipmovie_chunk().

#define OPCODE_END_OF_STREAM 0x00

Definition at line 55 of file ipmovie.c.

Referenced by process_ipmovie_chunk().

#define OPCODE_END_OF_CHUNK 0x01

Definition at line 56 of file ipmovie.c.

Referenced by process_ipmovie_chunk().

#define OPCODE_CREATE_TIMER 0x02

Definition at line 57 of file ipmovie.c.

Referenced by process_ipmovie_chunk().

#define OPCODE_INIT_AUDIO_BUFFERS 0x03

Definition at line 58 of file ipmovie.c.

Referenced by process_ipmovie_chunk().

#define OPCODE_START_STOP_AUDIO 0x04

Definition at line 59 of file ipmovie.c.

Referenced by process_ipmovie_chunk().

#define OPCODE_INIT_VIDEO_BUFFERS 0x05

Definition at line 60 of file ipmovie.c.

Referenced by process_ipmovie_chunk().

#define OPCODE_UNKNOWN_06 0x06

Definition at line 61 of file ipmovie.c.

Referenced by process_ipmovie_chunk().

#define OPCODE_SEND_BUFFER 0x07

Definition at line 62 of file ipmovie.c.

Referenced by process_ipmovie_chunk().

#define OPCODE_AUDIO_FRAME 0x08

Definition at line 63 of file ipmovie.c.

Referenced by process_ipmovie_chunk().

#define OPCODE_SILENCE_FRAME 0x09

Definition at line 64 of file ipmovie.c.

Referenced by process_ipmovie_chunk().

#define OPCODE_INIT_VIDEO_MODE 0x0A

Definition at line 65 of file ipmovie.c.

Referenced by process_ipmovie_chunk().

#define OPCODE_CREATE_GRADIENT 0x0B

Definition at line 66 of file ipmovie.c.

Referenced by process_ipmovie_chunk().

#define OPCODE_SET_PALETTE 0x0C

Definition at line 67 of file ipmovie.c.

Referenced by process_ipmovie_chunk().

#define OPCODE_SET_PALETTE_COMPRESSED 0x0D

Definition at line 68 of file ipmovie.c.

Referenced by process_ipmovie_chunk().

#define OPCODE_UNKNOWN_0E 0x0E

Definition at line 69 of file ipmovie.c.

Referenced by process_ipmovie_chunk().

#define OPCODE_SET_DECODING_MAP 0x0F

Definition at line 70 of file ipmovie.c.

Referenced by process_ipmovie_chunk().

#define OPCODE_UNKNOWN_10 0x10

Definition at line 71 of file ipmovie.c.

Referenced by process_ipmovie_chunk().

#define OPCODE_VIDEO_DATA 0x11

Definition at line 72 of file ipmovie.c.

Referenced by process_ipmovie_chunk().

#define OPCODE_UNKNOWN_12 0x12

Definition at line 73 of file ipmovie.c.

Referenced by process_ipmovie_chunk().

#define OPCODE_UNKNOWN_13 0x13

Definition at line 74 of file ipmovie.c.

Referenced by process_ipmovie_chunk().

#define OPCODE_UNKNOWN_14 0x14

Definition at line 75 of file ipmovie.c.

Referenced by process_ipmovie_chunk().

#define OPCODE_UNKNOWN_15 0x15

Definition at line 76 of file ipmovie.c.

Referenced by process_ipmovie_chunk().

#define PALETTE_COUNT 256

Definition at line 78 of file ipmovie.c.

Function Documentation

static int load_ipmovie_packet	(	IPMVEContext *	s,
		AVIOContext *	pb,
		AVPacket *	pkt
	)

static

Definition at line 115 of file ipmovie.c.

Referenced by process_ipmovie_chunk().

static int process_ipmovie_chunk	(	IPMVEContext *	s,
		AVIOContext *	pb,
		AVPacket *	pkt
	)

static

Definition at line 217 of file ipmovie.c.

Referenced by ipmovie_read_header(), and ipmovie_read_packet().

static int ipmovie_probe ( AVProbeData * p )

static

Definition at line 528 of file ipmovie.c.

static int ipmovie_read_header ( AVFormatContext * s )

static

Definition at line 541 of file ipmovie.c.

static int ipmovie_read_packet	(	AVFormatContext *	s,
		AVPacket *	pkt
	)

static

Definition at line 623 of file ipmovie.c.

Variable Documentation

const char signature[] = "Interplay MVE File\x1A\0\x1A"

static

Definition at line 526 of file ipmovie.c.

Referenced by ipmovie_probe(), ipmovie_read_header(), rl2_read_header(), and rtmp_handshake().

AVInputFormat ff_ipmovie_demuxer

Initial value:

= {
    .name           = "ipmovie",
    .long_name      = NULL_IF_CONFIG_SMALL("Interplay MVE"),
    .priv_data_size = sizeof(IPMVEContext),
    .read_probe     = ipmovie_probe,
    .read_header    = ipmovie_read_header,
    .read_packet    = ipmovie_read_packet,
}

Definition at line 649 of file ipmovie.c.