itsmattkc
75d4cd899b
The macro defined namespaces confused the hell out of lupdate and more or less broke translations permanently. Looks like the only way we can do it is to have a hardcoded namespace, which goes against my instinct, but honestly how likely is it that we'll change the namespace anyway (I guess forks might want to do it, but that's their problem ;) )
141 lines
3.0 KiB
C++
141 lines
3.0 KiB
C++
/***
|
|
|
|
Olive - Non-Linear Video Editor
|
|
Copyright (C) 2020 Olive Team
|
|
|
|
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 "outputdeviceproxy.h"
|
|
|
|
#include "audiomanager.h"
|
|
|
|
namespace olive {
|
|
|
|
AudioOutputDeviceProxy::AudioOutputDeviceProxy(QObject *parent) :
|
|
QIODevice(parent),
|
|
device_(nullptr)
|
|
{
|
|
}
|
|
|
|
void AudioOutputDeviceProxy::SetParameters(const AudioParams ¶ms)
|
|
{
|
|
params_ = params;
|
|
}
|
|
|
|
void AudioOutputDeviceProxy::SetDevice(QIODevice* device, qint64 offset, int playback_speed)
|
|
{
|
|
if (device_) {
|
|
delete device_;
|
|
}
|
|
|
|
device_ = device;
|
|
device_->setParent(this);
|
|
|
|
if (!device_->open(QFile::ReadOnly)) {
|
|
qCritical() << "Failed to open IO device for audio playback";
|
|
delete device_;
|
|
device_ = nullptr;
|
|
return;
|
|
}
|
|
|
|
device_->seek(offset);
|
|
|
|
playback_speed_ = playback_speed;
|
|
|
|
if (qAbs(playback_speed_) != 1) {
|
|
tempo_processor_.Open(params_, qAbs(playback_speed_));
|
|
}
|
|
}
|
|
|
|
void AudioOutputDeviceProxy::close()
|
|
{
|
|
QIODevice::close();
|
|
|
|
delete device_;
|
|
device_ = nullptr;
|
|
|
|
if (tempo_processor_.IsOpen()) {
|
|
tempo_processor_.Close();
|
|
}
|
|
}
|
|
|
|
qint64 AudioOutputDeviceProxy::readData(char *data, qint64 maxlen)
|
|
{
|
|
if (!device_) {
|
|
return 0;
|
|
}
|
|
|
|
qint64 read_count;
|
|
|
|
if (tempo_processor_.IsOpen()) {
|
|
|
|
while ((read_count = tempo_processor_.Pull(data, static_cast<int>(maxlen))) == 0) {
|
|
int dev_read = static_cast<int>(ReverseAwareRead(data, maxlen));
|
|
|
|
if (!dev_read) {
|
|
break;
|
|
}
|
|
|
|
tempo_processor_.Push(data, dev_read);
|
|
}
|
|
|
|
} else {
|
|
// If we aren't doing any tempo processing, simply passthrough the read signal
|
|
read_count = ReverseAwareRead(data, maxlen);
|
|
}
|
|
|
|
return read_count;
|
|
}
|
|
|
|
qint64 AudioOutputDeviceProxy::writeData(const char *data, qint64 maxSize)
|
|
{
|
|
Q_UNUSED(data)
|
|
Q_UNUSED(maxSize)
|
|
|
|
return 0;
|
|
}
|
|
|
|
qint64 AudioOutputDeviceProxy::ReverseAwareRead(char *data, qint64 maxlen)
|
|
{
|
|
qint64 new_pos = -1;
|
|
|
|
if (playback_speed_ < 0) {
|
|
// If we're reversing, we'll seek back by maxlen bytes before we read
|
|
new_pos = device_->pos() - maxlen;
|
|
|
|
if (new_pos < 0) {
|
|
maxlen = device_->pos();
|
|
|
|
new_pos = 0;
|
|
}
|
|
|
|
device_->seek(new_pos);
|
|
}
|
|
|
|
qint64 read_count = device_->read(data, maxlen);
|
|
|
|
if (playback_speed_ < 0) {
|
|
device_->seek(new_pos);
|
|
|
|
// Reverse the samples here
|
|
AudioManager::ReverseBuffer(data, static_cast<int>(read_count), params_.samples_to_bytes(1));
|
|
}
|
|
|
|
return read_count;
|
|
}
|
|
|
|
}
|