mpv/libmpdemux/muxer_rawaudio.c

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2.2 KiB
C
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include "help_mp.h"
#include "mp_msg.h"
#include "aviheader.h"
#include "ms_hdr.h"
#include "muxer.h"
static muxer_stream_t* rawaudiofile_new_stream(muxer_t *muxer,int type){
muxer_stream_t* s;
if (!muxer) return NULL;
if(type==MUXER_TYPE_AUDIO && muxer->avih.dwStreams>=1){
mp_msg(MSGT_MUXER,MSGL_ERR,MSGTR_TooManyStreams" "MSGTR_RawMuxerOnlyOneStream);
return NULL;
}
s=malloc(sizeof(muxer_stream_t));
memset(s,0,sizeof(muxer_stream_t));
if(!s) return NULL; // no mem!?
muxer->streams[muxer->avih.dwStreams]=s;
s->type=type;
s->id=muxer->avih.dwStreams;
s->timer=0.0;
s->size=0;
s->muxer=muxer;
switch(type){
case MUXER_TYPE_AUDIO:
s->ckid=mmioFOURCC(('0'+s->id/10),('0'+(s->id%10)),'d','c');
s->h.fccType=streamtypeAUDIO;
muxer->avih.dwStreams++;
break;
case MUXER_TYPE_VIDEO:
mp_msg(MSGT_MUXER,MSGL_WARN,MSGTR_IgnoringVideoStream);
s->ckid=mmioFOURCC(('0'+s->id/10),('0'+(s->id%10)),'d','c');
s->h.fccType=streamtypeAUDIO;
break;
default:
mp_msg(MSGT_MUXER,MSGL_ERR,MSGTR_UnknownStreamType,type);
return NULL;
}
return s;
}
static void rawaudiofile_write_chunk(muxer_stream_t *s,size_t len,unsigned int flags){
muxer_t *muxer=s->muxer;
// write out the chunk:
if (s->type==MUXER_TYPE_AUDIO)
fwrite(s->buffer,len,1,muxer->file);
// alter counters:
if(s->h.dwSampleSize){
// CBR
s->h.dwLength+=len/s->h.dwSampleSize;
if(len%s->h.dwSampleSize)
mp_msg(MSGT_MUXER,MSGL_WARN,MSGTR_WarningLenIsntDivisible);
} else {
// VBR
s->h.dwLength++;
}
s->timer=(double)s->h.dwLength*s->h.dwScale/s->h.dwRate;
s->size+=len;
}
static void rawaudiofile_write_header(muxer_t *muxer){
return;
}
static void rawaudiofile_write_index(muxer_t *muxer){
return;
}
int muxer_init_muxer_rawaudio(muxer_t *muxer){
muxer->cont_new_stream = &rawaudiofile_new_stream;
muxer->cont_write_chunk = &rawaudiofile_write_chunk;
muxer->cont_write_header = &rawaudiofile_write_header;
muxer->cont_write_index = &rawaudiofile_write_index;
return 1;
}