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/* aKode: Sun-Sink
Copyright (C) 2005 Allan Sandfeld Jensen <kde@carewolf.com>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include <config.h>
#include <sys/audioio.h>
#include <sys/ioctl.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <alloca.h>
#include <audioframe.h>
#include "sun_sink.h"
#include <iostream>
namespace aKode {
extern "C" { SunSinkPlugin sun_sink; }
struct SunSink::private_data
{
private_data() : audio_fd(-1), device(0), valid(false) {};
int audio_fd;
audio_info_t auinfo;
const char *device;
AudioConfiguration config;
bool valid;
};
SunSink::SunSink()
{
d = new private_data;
}
SunSink::~SunSink()
{
close();
delete d;
}
bool SunSink::open()
{
const char* device = getenv("AUDIODEV");
if (!device) device = "/dev/audio";
if (::access(device, F_OK) != 0) {
std::cerr << "akode: Device not found: " << device << "\n";
goto failed;
}
d->device = device;
d->audio_fd = ::open(d->device, O_WRONLY, 0);
if (d->audio_fd == -1) {
std::cerr << "akode: No write access to " << device << "\n";
goto failed;
}
d->valid = true;
return true;
failed:
d->valid = false;
return false;
}
void SunSink::close() {
if (d->audio_fd != -1) ::close(d->audio_fd);
d->audio_fd = -1;
d->valid = false;
}
int SunSink::setAudioConfiguration(const AudioConfiguration* config)
{
d->config = *config;
AUDIO_INITINFO(&d->auinfo)
if (ioctl(d->audio_fd, AUDIO_GETINFO, &d->auinfo) < 0)
{
d->valid = false;
return -1;
}
int width = config->sample_width;
if (width < 0 ) width = 16;
d->auinfo.play.precision = width;
d->auinfo.play.encoding = AUDIO_ENCODING_LINEAR;
d->auinfo.play.channels = config->channels;
d->auinfo.play.sample_rate = config->sample_rate;
if (ioctl(d->audio_fd, AUDIO_SETINFO, &d->auinfo) < 0)
{
d->valid = false;
return -1;
}
if (ioctl(d->audio_fd, AUDIO_GETINFO, &d->auinfo) < 0)
{
d->valid = false;
return -1;
}
d->config.sample_width = d->auinfo.play.precision;
d->config.channels = d->auinfo.play.channels;
d->config.sample_rate = d->auinfo.play.sample_rate;
if (d->config.channels <= 2) d->config.channel_config = MonoStereo;
if (d->config == *config)
return 0;
else
return 1;
}
const AudioConfiguration* SunSink::audioConfiguration() const
{
return &d->config;
}
bool SunSink::writeFrame(AudioFrame* frame)
{
if (!d->valid) return false;
if ( frame->sample_width != d->config.sample_width
|| frame->channels != d->config.channels )
{
if (setAudioConfiguration(frame) < 0)
return false;
}
int channels = d->config.channels;
int length = frame->length;
int16_t *buffer = (int16_t*)alloca(length*channels*2);
int16_t** data = (int16_t**)frame->data;
for(int i = 0; i<length; i++)
for(int j=0; j<channels; j++)
buffer[i*channels+j] = data[j][i];
// std::cerr << "Writing frame\n";
int status = 0;
do {
status = ::write(d->audio_fd, buffer, channels*length*2);
if (status == -1) {
// if (errno == EAGAIN) continue;
if (errno == EINTR) continue;
return false;
}
} while(false);
return true;
}
} // namespace
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