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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include <unistd.h>
#include "config.h"
#include "version.h"
#include "aviheader.h"
#include "ms_hdr.h"
#include "stream/stream.h"
#include "muxer.h"
#include "demuxer.h"
#include "mp_msg.h"
#include "help_mp.h"
#include "stheader.h"
muxer_t *muxer_new_muxer(int type,stream_t *stream){
muxer_t* muxer=calloc(1,sizeof(muxer_t));
if(!muxer)
return NULL;
muxer->stream = stream;
switch (type) {
case MUXER_TYPE_MPEG:
if(! muxer_init_muxer_mpeg(muxer))
goto fail;
break;
case MUXER_TYPE_RAWVIDEO:
if(! muxer_init_muxer_rawvideo(muxer))
goto fail;
break;
case MUXER_TYPE_RAWAUDIO:
if(! muxer_init_muxer_rawaudio(muxer))
goto fail;
break;
#ifdef USE_LIBAVFORMAT
case MUXER_TYPE_LAVF:
if(! muxer_init_muxer_lavf(muxer))
goto fail;
break;
#endif
case MUXER_TYPE_AVI:
default:
if(! muxer_init_muxer_avi(muxer))
goto fail;
}
return muxer;
fail:
free(muxer);
return NULL;
}
/* buffer frames until we either:
* (a) have at least one frame from each stream
* (b) run out of memory */
void muxer_write_chunk(muxer_stream_t *s, size_t len, unsigned int flags, double dts, double pts) {
if(dts == MP_NOPTS_VALUE) dts= s->timer;
if(pts == MP_NOPTS_VALUE) pts= s->timer; // this is wrong
if (s->muxer->muxbuf_skip_buffer) {
s->muxer->cont_write_chunk(s, len, flags, dts, pts);
}
else {
int num = s->muxer->muxbuf_num++;
muxbuf_t *buf, *tmp;
tmp = realloc_struct(s->muxer->muxbuf, (num+1), sizeof(muxbuf_t));
if(!tmp) {
mp_msg(MSGT_MUXER, MSGL_FATAL, MSGTR_MuxbufReallocErr);
return;
}
s->muxer->muxbuf = tmp;
buf = s->muxer->muxbuf + num;
/* buffer this frame */
buf->stream = s;
buf->dts= dts;
buf->pts= pts;
buf->len = len;
buf->flags = flags;
buf->buffer = malloc(len);
if (!buf->buffer) {
mp_msg(MSGT_MUXER, MSGL_FATAL, MSGTR_MuxbufMallocErr);
return;
}
memcpy(buf->buffer, s->buffer, buf->len);
s->muxbuf_seen = 1;
/* see if we need to keep buffering */
s->muxer->muxbuf_skip_buffer = 1;
for (num = 0; s->muxer->streams[num]; ++num)
if (!s->muxer->streams[num]->muxbuf_seen)
s->muxer->muxbuf_skip_buffer = 0;
/* see if we can flush buffer now */
if (s->muxer->muxbuf_skip_buffer) {
mp_msg(MSGT_MUXER, MSGL_V, MSGTR_MuxbufSending, s->muxer->muxbuf_num);
/* fix parameters for all streams */
for (num = 0; s->muxer->streams[num]; ++num) {
muxer_stream_t *str = s->muxer->streams[num];
if(str->muxer->fix_stream_parameters)
muxer_stream_fix_parameters(str->muxer, str);
}
/* write header */
if (s->muxer->cont_write_header)
muxer_write_header(s->muxer);
/* send all buffered frames to muxer */
for (num = 0; num < s->muxer->muxbuf_num; ++num) {
muxbuf_t tmp_buf;
buf = s->muxer->muxbuf + num;
s = buf->stream;
/* 1. save timer and buffer (might have changed by now) */
tmp_buf.dts = s->timer;
tmp_buf.buffer = s->buffer;
/* 2. move stored timer and buffer into stream and mux it */
s->timer = buf->dts;
s->buffer = buf->buffer;
s->muxer->cont_write_chunk(s, buf->len, buf->flags, buf->dts, buf->pts);
/* 3. restore saved timer and buffer */
s->timer = tmp_buf.dts;
s->buffer = tmp_buf.buffer;
}
free(s->muxer->muxbuf);
s->muxer->muxbuf_num = 0;
}
}
/* this code moved directly from muxer_avi.c */
// 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;
return;
}
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