1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
#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.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;
#if defined(USE_LIBAVFORMAT) || defined(USE_LIBAVFORMAT_SO)
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;
}
|
