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
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
/* $Id: Mux.c,v 1.9 2004/05/25 17:36:40 titer Exp $
This file is part of the HandBrake source code.
Homepage: <http://handbrake.m0k.org/>.
It may be used under the terms of the GNU General Public License. */
#include <sys/types.h>
#include <sys/stat.h>
#include "HBInternal.h"
HBMux * HBAviMuxInit( HBHandle * handle, HBTitle * title );
void HBAviMuxClose( HBMux ** );
HBMux * HBMp4MuxInit( HBHandle * handle, HBTitle * title );
void HBMp4MuxClose( HBMux ** );
HBMux * HBOgmMuxInit( HBHandle * handle, HBTitle * title );
void HBOgmMuxClose( HBMux ** );
/* Local prototypes */
static void MuxThread( void * t );
struct HBMux
{
HB_MUX_COMMON_MEMBERS
};
struct HBMuxThread
{
HBHandle * handle;
HBTitle * title;
HBMux * mux;
uint64_t videoFrames;
uint64_t videoBytes;
uint64_t audioFrames;
uint64_t audioBytes;
volatile int die;
HBThread * thread;
};
HBMuxThread * HBMuxThreadInit( HBHandle * handle, HBTitle * title )
{
HBMuxThread * t;
if( !( t = calloc( sizeof( HBMuxThread ), 1 ) ) )
{
HBLog( "HBMuxThreadInit: malloc() failed, gonna crash" );
return NULL;
}
t->handle = handle;
t->title = title;
/* Init muxer */
if( title->mux == HB_MUX_AVI )
t->mux = HBAviMuxInit( handle, title );
else if( title->mux == HB_MUX_MP4 )
t->mux = HBMp4MuxInit( handle, title );
else if( title->mux == HB_MUX_OGM )
t->mux = HBOgmMuxInit( handle, title );
/* Launch the thread */
t->thread = HBThreadInit( "mux thread", MuxThread, t,
HB_NORMAL_PRIORITY );
return t;
}
void HBMuxThreadClose( HBMuxThread ** _t )
{
HBMuxThread * t = (*_t);
HBTitle * title = t->title;
struct stat sb;
/* Stop the thread */
t->die = 1;
HBThreadClose( &t->thread );
/* Close muxer */
if( title->mux == HB_MUX_AVI )
HBAviMuxClose( &t->mux );
else if( title->mux == HB_MUX_MP4 )
HBMp4MuxClose( &t->mux );
else if( title->mux == HB_MUX_OGM )
HBOgmMuxClose( &t->mux );
/* Stats */
if( !stat( title->file, &sb ) )
{
uint64_t overhead;
HBAudio * audio;
overhead = (uint64_t) sb.st_size - t->videoBytes - t->audioBytes;
HBLog( "HBMuxThread: file size: "LLD" bytes",
(uint64_t) sb.st_size );
HBLog( "HBMuxThread: video data: "LLD" bytes ("LLD" frames)",
t->videoBytes, t->videoFrames );
HBLog( "HBMuxThread: audio data: "LLD" bytes ("LLD" frames)",
t->audioBytes, t->audioFrames );
HBLog( "HBMuxThread: overhead: "LLD" bytes (%.2f bytes per "
"frame)", overhead, (float) overhead / ( t->videoFrames +
t->audioFrames ) );
HBLog( "HBMuxThread: video bitrate: %.2f kbps",
(float) t->videoBytes * title->rate / t->videoFrames /
title->rateBase / 128 );
HBLog( "HBMuxThread: video error: "LLD" bytes", t->videoBytes -
t->videoFrames * title->bitrate * 128 * title->rateBase /
title->rate );
/* FIXME - handle multi-audio encoding */
audio = (HBAudio *) HBListItemAt( title->ripAudioList, 0 );
if( audio )
{
int samplesPerFrame = ( audio->outCodec == HB_CODEC_MP3 ?
1152 : 1024 );
HBLog( "HBMuxThread: audio bitrate: %.2f kbps",
(float) t->audioBytes * audio->outSampleRate /
t->audioFrames / samplesPerFrame / 125 );
HBLog( "HBMuxThread: audio error: "LLD" bytes",
t->audioBytes - audio->outBitrate * t->audioFrames *
125 * samplesPerFrame / audio->outSampleRate );
}
}
free( t );
*_t = NULL;
}
static int MuxWait( HBTitle * title )
{
int i;
HBAudio * audio;
if( !HBFifoWait( title->outFifo ) )
{
return 0;
}
for( i = 0; i < HBListCount( title->ripAudioList ); i++ )
{
audio = HBListItemAt( title->ripAudioList, i );
if( !HBFifoWait( audio->outFifo ) )
{
return 0;
}
}
return 1;
}
static void MuxThread( void * _t )
{
HBMuxThread * t = (HBMuxThread*) _t;
HBTitle * title = t->title;
HBMux * m = t->mux;
HBAudio * audio;
HBBuffer * buffer;
int i;
/* Remove the file if already existing */
unlink( title->file );
/* Wait until we have at least one video frame and 3 audio frames
for each track (Vorbis...) */
if( !HBFifoWait( title->outFifo ) )
{
return;
}
for( i = 0; i < HBListCount( title->ripAudioList ); i++ )
{
audio = HBListItemAt( title->ripAudioList, i );
while( !t->die && HBFifoSize( audio->outFifo ) < 3 )
{
HBSnooze( 10000 );
}
if( t->die )
{
return;
}
}
m->start( m );
/* Mux */
for( ;; )
{
/* Wait until we have one frame for each track */
if( !MuxWait( title ) )
{
break;
}
/* Interleave frames in the same order than they were in the
original MPEG stream */
audio = NULL;
for( i = 0; i < HBListCount( title->ripAudioList ); i++ )
{
HBAudio * otherAudio;
otherAudio = HBListItemAt( title->ripAudioList, i );
if( !audio || HBFifoPosition( otherAudio->outFifo ) <
HBFifoPosition( audio->outFifo ) )
{
audio = otherAudio;
}
}
if( !audio || HBFifoPosition( title->outFifo ) <
HBFifoPosition( audio->outFifo ) )
{
/* Video */
buffer = HBFifoPop( title->outFifo );
m->muxVideo( m, title->muxData, buffer );
t->videoBytes += buffer->size;
t->videoFrames++;
HBBufferClose( &buffer );
}
else
{
/* Audio */
buffer = HBFifoPop( audio->outFifo );
m->muxAudio( m, audio->muxData, buffer );
t->audioBytes += buffer->size;
t->audioFrames++;
HBBufferClose( &buffer );
}
}
m->end( m );
}
|
