74 lines
1.9 KiB
C++
74 lines
1.9 KiB
C++
#include "audio.h"
|
|
|
|
#include "project/sequence.h"
|
|
|
|
#include <QAudioOutput>
|
|
#include <QDebug>
|
|
|
|
extern "C" {
|
|
#include <libavcodec/avcodec.h>
|
|
}
|
|
|
|
QAudioOutput* audio_output;
|
|
QIODevice* audio_io_device;
|
|
bool audio_device_set = false;
|
|
|
|
uint8_t* audio_cache_A = NULL;
|
|
uint8_t* audio_cache_B = NULL;
|
|
int audio_cache_size = 0;
|
|
bool switch_audio_cache = true;
|
|
bool reading_audio_cache_A = false;
|
|
int audio_bytes_written = 0;
|
|
|
|
void init_audio(Sequence* s) {
|
|
if (audio_cache_A != NULL) {
|
|
delete [] audio_cache_A;
|
|
audio_cache_A = NULL;
|
|
}
|
|
|
|
if (audio_cache_B != NULL) {
|
|
delete [] audio_cache_B;
|
|
audio_cache_B = NULL;
|
|
}
|
|
|
|
if (audio_device_set) {
|
|
audio_output->stop();
|
|
delete audio_output;
|
|
audio_device_set = false;
|
|
}
|
|
|
|
if (s != NULL) {
|
|
QAudioFormat audio_format;
|
|
audio_format.setSampleRate(s->audio_frequency);
|
|
audio_format.setChannelCount(av_get_channel_layout_nb_channels(s->audio_layout));
|
|
audio_format.setSampleSize(16);
|
|
audio_format.setCodec("audio/pcm");
|
|
audio_format.setByteOrder(QAudioFormat::LittleEndian);
|
|
audio_format.setSampleType(QAudioFormat::SignedInt);
|
|
|
|
QAudioDeviceInfo info(QAudioDeviceInfo::defaultOutputDevice());
|
|
if (!info.isFormatSupported(audio_format)) {
|
|
qWarning() << "[WARNING] Couldn't initialize audio. Audio format is not supported by backend";
|
|
} else {
|
|
audio_output = new QAudioOutput(audio_format);
|
|
// connect
|
|
audio_io_device = audio_output->start();
|
|
audio_device_set = true;
|
|
|
|
audio_cache_size = av_samples_get_buffer_size(NULL, av_get_channel_layout_nb_channels(s->audio_layout), s->audio_frequency/8, AV_SAMPLE_FMT_S16, 1);
|
|
audio_cache_A = new uint8_t[audio_cache_size];
|
|
audio_cache_B = new uint8_t[audio_cache_size];
|
|
clear_cache(true, true);
|
|
}
|
|
}
|
|
}
|
|
|
|
void clear_cache(bool clear_A, bool clear_B) {
|
|
if (clear_A) {
|
|
memset(audio_cache_A, 0, audio_cache_size);
|
|
}
|
|
if (clear_B) {
|
|
memset(audio_cache_B, 0, audio_cache_size);
|
|
}
|
|
}
|