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
|
/* $Id: FaacEnc.c,v 1.20 2004/05/02 16:25:00 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 "HBInternal.h"
/* libfaac */
#include "faac.h"
struct HBWork
{
HB_WORK_COMMON_MEMBERS
HBHandle * handle;
HBAudio * audio;
faacEncHandle * faac;
unsigned long inputSamples;
unsigned long maxOutputBytes;
float * inputBuffer;
};
/* Local prototypes */
static int FaacEncWork( HBWork * );
HBWork * HBFaacEncInit( HBHandle * handle, HBAudio * audio )
{
HBWork * w;
if( !( w = calloc( sizeof( HBWork ), 1 ) ) )
{
HBLog( "HBFaacEncInit: malloc() failed, gonna crash" );
return NULL;
}
w->name = strdup( "FaacEnc" );
w->work = FaacEncWork;
w->handle = handle;
w->audio = audio;
return w;
}
void HBFaacEncClose( HBWork ** _w )
{
HBWork * w = *_w;
if( w->faac )
{
faacEncClose( w->faac );
free( w->inputBuffer );
}
free( w->name );
free( w );
*_w = NULL;
}
static int FaacEncWork( HBWork * w )
{
HBAudio * audio = w->audio;
HBBuffer * aacBuffer;
float position;
if( !w->faac )
{
faacEncConfigurationPtr config;
if( !HBFifoSize( audio->resampleFifo ) )
{
return 0;
}
HBLog( "HBFaacEnc: opening libfaac (%x)", audio->id );
w->faac = faacEncOpen( audio->outSampleRate, 2,
&w->inputSamples, &w->maxOutputBytes );
w->inputBuffer = malloc( w->inputSamples * sizeof( float ) );
config = faacEncGetCurrentConfiguration( w->faac );
config->mpegVersion = MPEG4;
config->aacObjectType = LOW;
config->allowMidside = 1;
config->useLfe = 0;
config->useTns = 0;
config->bitRate = audio->outBitrate * 500; /* per channel */
config->bandWidth = 0;
config->outputFormat = 0;
config->inputFormat = FAAC_INPUT_FLOAT;
if( !faacEncSetConfiguration( w->faac, config ) )
{
HBLog( "HBFaacEnc: faacEncSetConfiguration failed" );
}
if( faacEncGetDecoderSpecificInfo( w->faac, &audio->esConfig,
&audio->esConfigLength ) < 0 )
{
HBLog( "HBFaacEnc: faacEncGetDecoderSpecificInfo failed" );
}
}
if( HBFifoIsHalfFull( audio->outFifo ) )
{
return 0;
}
if( !HBFifoGetBytes( audio->resampleFifo,
(uint8_t *) w->inputBuffer,
w->inputSamples * sizeof( float ),
&position ) )
{
return 0;
}
aacBuffer = HBBufferInit( w->maxOutputBytes );
aacBuffer->position = position;
aacBuffer->size = faacEncEncode( w->faac, (int32_t*)w->inputBuffer,
w->inputSamples, aacBuffer->data, w->maxOutputBytes );
if( !aacBuffer->size )
{
HBBufferClose( &aacBuffer );
}
else if( aacBuffer->size < 0 )
{
HBLog( "HBFaacEnc: faacEncEncode() failed" );
}
else
{
if( !HBFifoPush( audio->outFifo, &aacBuffer ) )
{
HBLog( "HBFaacEnc: HBFifoPush failed" );
}
}
return 1;
}
|
