/
port_audio.cpp
83 lines (69 loc) · 2.43 KB
/
port_audio.cpp
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
/******************************************************************************
CCAV: Media play library based on Qt(UI),c/c++11 and FFmpeg
Copyright (C) 2015-2016 Juno <junowendy@gmail.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
******************************************************************************/
#include <CCAV/port_audio.h>
#include <private/port_audio_private.h>
namespace CCAV {
CCPortAudio::CCPortAudio()
:CCOutputAudio(*new CCPortAudioPrivate())
{
}
CCPortAudio::~CCPortAudio()
{
close();
}
bool CCPortAudio::write()
{
DPTR_D(CCPortAudio);
if (Pa_IsStreamStopped(d.stream))
Pa_StartStream(d.stream);
PaError err = Pa_WriteStream(d.stream, d.data.data(), d.data.size() / d.channels / sizeof(float));
if (err == paUnanticipatedHostError) {
qWarning("Write portaudio stream error: %s", Pa_GetErrorText(err));
return false;
}
return true;
}
bool CCPortAudio::open()
{
DPTR_D(CCPortAudio);
//
d.outputParameters->channelCount = d.channels;
PaError err = Pa_OpenStream(&d.stream, NULL, d.outputParameters, d.sample_rate, 0, paNoFlag, NULL, NULL);
if (err == paNoError) {
d.outputLatency = Pa_GetStreamInfo(d.stream)->outputLatency;
d.available = true;
} else {
qWarning("Open portaudio stream error: %s", Pa_GetErrorText(err));
d.available = false;
}
return err == paNoError;
}
bool CCPortAudio::close()
{
DPTR_D(CCPortAudio);
PaError err = paNoError;
if (!d.stream) {
return true;
}
err = Pa_StopStream(d.stream);
if (err != paNoError)
qWarning("Stop portaudio stream error: %s", Pa_GetErrorText(err));
err = Pa_CloseStream(d.stream);
d.stream = NULL;
if (err != paNoError)
qWarning("Close portaudio stream error: %s", Pa_GetErrorText(err));
return err == paNoError;
}
} //namespace CCAV