root/src/blocks/flv.h

INCLUDED FROM

/*
    
   Ming, an SWF output library
   Copyright (C) 2002  Opaque Industries - http://www.opaque.net/
   
   1.2.2007 Klaus Rechert
   
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with this library; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/


#ifndef _FLV_H_
#define _FLV_H_

#define AUDIO_CODEC_UNCOMPRESSED   0
#define AUDIO_CODEC_ADPCM       0x01
#define AUDIO_CODEC_MP3         0x02
#define AUDIO_CODEC_NELLY_MONO  0x05
#define AUDIO_CODEC_NELLY       0x06

#define VIDEO_CODEC_H263        0x02
#define VIDEO_CODEC_SCREEN      0x03
#define VIDEO_CODEC_VP6         0x04
#define VIDEO_CODEC_VP6A        0x05
#define VIDEO_CODEC_SCREEN2     0x06

#define FLV_AUDIO_PRESENT       0x04
#define FLV_VIDEO_PRESENT       0x01

#define FLV_VIDEOTAG            0x09
#define FLV_AUDIOTAG            0x08
#define FLV_SCRIPTTAG           0x12

struct FLVStream_s
{
        char            version;
        SWFInput        input;
        
        unsigned int    offset;
        unsigned int    stream_start;

        char            has_video;
        char            has_audio;
};


struct video_hdr 
{
        unsigned int codec;
        unsigned int frameType;
};

struct audio_hdr 
{
        unsigned char format;
        unsigned char samplingRate;
        unsigned char sampleSize;
        unsigned char channel;
};


struct FLVTag_s
{
        struct FLVStream_s      *stream;
        int                     tagType;
        long            dataSize;
        long            timeStamp;
        long            offset;
        long            data;
        union {
                struct video_hdr video;
                struct audio_hdr audio;
        } hdr;
};

typedef struct FLVTag_s         FLVTag;
typedef struct FLVStream_s      FLVStream;

int FLVStream_getNumFrames(FLVStream *flv, int type);
int FLVStream_nextTag(FLVStream *flv, FLVTag *tag, FLVTag *prev);
int FLVStream_nextTagType(FLVStream *flv, FLVTag *tag, FLVTag *prev, int type);
FLVStream *FLVStream_fromInput(SWFInput input);
void destroyFLVStream(FLVStream *flv);
SWFInput FLVTag_getPayloadInput(FLVTag *tag);
int FLVStream_setStreamOffset(FLVStream *flv, unsigned int msecs);
unsigned int FLVStream_getDuration(FLVStream *flv, int type);
#endif