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
|
/* $Id: muxmp4.c,v 1.24 2005/11/04 13:09:41 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. */
/* libmp4v2 header */
#include "mp4.h"
#include "hb.h"
struct hb_mux_object_s
{
HB_MUX_COMMON;
hb_job_t * job;
/* libmp4v2 handle */
MP4FileHandle file;
/* Cumulated durations so far, in timescale units (see MP4Mux) */
uint64_t sum_dur;
};
struct hb_mux_data_s
{
MP4TrackId track;
};
/**********************************************************************
* MP4Init
**********************************************************************
* Allocates hb_mux_data_t structures, create file and write headers
*********************************************************************/
static int MP4Init( hb_mux_object_t * m )
{
hb_job_t * job = m->job;
hb_title_t * title = job->title;
hb_audio_t * audio;
hb_mux_data_t * mux_data;
int i;
/* Create an empty mp4 file */
m->file = MP4Create( job->file, MP4_DETAILS_ERROR, 0 );
/* Video track */
mux_data = malloc( sizeof( hb_mux_data_t ) );
job->mux_data = mux_data;
/* When using the standard 90000 timescale, QuickTime tends to have
synchronization issues (audio not playing at the correct speed).
To workaround this, we use the audio samplerate as the
timescale */
MP4SetTimeScale( m->file, job->arate );
if( job->vcodec == HB_VCODEC_X264 )
{
/* Stolen from mp4creator */
MP4SetVideoProfileLevel( m->file, 0x7F );
mux_data->track = MP4AddH264VideoTrack( m->file, job->arate,
MP4_INVALID_DURATION, job->width, job->height,
job->config.h264.sps[1], /* AVCProfileIndication */
job->config.h264.sps[2], /* profile_compat */
job->config.h264.sps[3], /* AVCLevelIndication */
3 ); /* 4 bytes length before each NAL unit */
MP4AddH264SequenceParameterSet( m->file, mux_data->track,
job->config.h264.sps, job->config.h264.sps_length );
MP4AddH264PictureParameterSet( m->file, mux_data->track,
job->config.h264.pps, job->config.h264.pps_length );
}
else /* FFmpeg or XviD */
{
MP4SetVideoProfileLevel( m->file, MPEG4_SP_L3 );
mux_data->track = MP4AddVideoTrack( m->file, job->arate,
MP4_INVALID_DURATION, job->width, job->height,
MP4_MPEG4_VIDEO_TYPE );
/* VOL from FFmpeg or XviD */
MP4SetTrackESConfiguration( m->file, mux_data->track,
job->config.mpeg4.bytes, job->config.mpeg4.length );
}
for( i = 0; i < hb_list_count( title->list_audio ); i++ )
{
audio = hb_list_item( title->list_audio, i );
mux_data = malloc( sizeof( hb_mux_data_t ) );
audio->mux_data = mux_data;
mux_data->track = MP4AddAudioTrack( m->file,
job->arate, 1024, MP4_MPEG4_AUDIO_TYPE );
MP4SetAudioProfileLevel( m->file, 0x0F );
MP4SetTrackESConfiguration( m->file, mux_data->track,
audio->config.aac.bytes, audio->config.aac.length );
}
return 0;
}
static int MP4Mux( hb_mux_object_t * m, hb_mux_data_t * mux_data,
hb_buffer_t * buf )
{
hb_job_t * job = m->job;
uint64_t duration;
if( mux_data == job->mux_data )
{
/* Video */
/* Because we use the audio samplerate as the timescale,
we have to use potentially variable durations so the video
doesn't go out of sync */
duration = ( buf->stop * job->arate / 90000 ) - m->sum_dur;
m->sum_dur += duration;
}
else
{
/* Audio */
duration = MP4_INVALID_DURATION;
}
MP4WriteSample( m->file, mux_data->track, buf->data, buf->size,
duration, 0, buf->key );
return 0;
}
static int MP4End( hb_mux_object_t * m )
{
#if 0
hb_job_t * job = m->job;
#endif
char filename[1024]; memset( filename, 0, 1024 );
MP4Close( m->file );
#if 0
hb_log( "muxmp4: optimizing file" );
snprintf( filename, 1024, "%s.tmp", job->file );
MP4Optimize( job->file, filename, MP4_DETAILS_ERROR );
remove( job->file );
rename( filename, job->file );
#endif
return 0;
}
hb_mux_object_t * hb_mux_mp4_init( hb_job_t * job )
{
hb_mux_object_t * m = calloc( sizeof( hb_mux_object_t ), 1 );
m->init = MP4Init;
m->mux = MP4Mux;
m->end = MP4End;
m->job = job;
return m;
}
|
