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/* the Music Player Daemon (MPD)
* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
* This project's homepage is: http://www.musicpd.org
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "output_control.h"
#include "output_api.h"
#include "output_internal.h"
#include "output_thread.h"
#include <assert.h>
#include <stdlib.h>
struct notify audio_output_client_notify;
static void ao_command_wait(struct audio_output *ao)
{
while (ao->command != AO_COMMAND_NONE) {
notify_signal(&ao->notify);
notify_wait(&audio_output_client_notify);
}
}
static void ao_command(struct audio_output *ao, enum audio_output_command cmd)
{
assert(ao->command == AO_COMMAND_NONE);
ao->command = cmd;
ao_command_wait(ao);
}
static void ao_command_async(struct audio_output *ao,
enum audio_output_command cmd)
{
assert(ao->command == AO_COMMAND_NONE);
ao->command = cmd;
notify_signal(&ao->notify);
}
bool
audio_output_open(struct audio_output *ao,
const struct audio_format *audio_format)
{
ao->reopen_after = 0;
if (ao->open &&
audio_format_equals(audio_format, &ao->in_audio_format)) {
return true;
}
ao->in_audio_format = *audio_format;
if (audio_format_defined(&ao->config_audio_format)) {
/* copy config_audio_format to out_audio_format only if the
device is not yet open; if it is already open,
plugin->open() may have modified out_audio_format,
and the value is already ok */
if (!ao->open)
ao->out_audio_format =
ao->config_audio_format;
} else {
ao->out_audio_format = ao->in_audio_format;
if (ao->open)
audio_output_close(ao);
}
if (ao->thread == NULL)
audio_output_thread_start(ao);
if (!ao->open)
ao_command(ao, AO_COMMAND_OPEN);
return ao->open;
}
void
audio_output_update(struct audio_output *ao,
const struct audio_format *audio_format)
{
if (ao->enabled) {
if (ao->reopen_after == 0 || time(NULL) > ao->reopen_after)
audio_output_open(ao, audio_format);
} else if (audio_output_is_open(ao))
audio_output_close(ao);
}
void
audio_output_signal(struct audio_output *ao)
{
notify_signal(&ao->notify);
}
void
audio_output_play(struct audio_output *ao, const void *chunk, size_t size)
{
assert(size > 0);
if (!ao->open)
return;
ao->args.play.data = chunk;
ao->args.play.size = size;
ao_command_async(ao, AO_COMMAND_PLAY);
}
void audio_output_pause(struct audio_output *ao)
{
ao_command_async(ao, AO_COMMAND_PAUSE);
}
void audio_output_cancel(struct audio_output *ao)
{
ao_command_async(ao, AO_COMMAND_CANCEL);
}
void audio_output_close(struct audio_output *ao)
{
if (ao->open)
ao_command(ao, AO_COMMAND_CLOSE);
}
void audio_output_finish(struct audio_output *ao)
{
audio_output_close(ao);
if (ao->thread != NULL) {
ao_command(ao, AO_COMMAND_KILL);
g_thread_join(ao->thread);
}
ao_plugin_finish(ao->plugin, ao->data);
notify_deinit(&ao->notify);
}
void
audio_output_send_tag(struct audio_output *ao, const struct tag *tag)
{
if (ao->plugin->send_tag == NULL)
return;
ao->args.tag = tag;
ao_command_async(ao, AO_COMMAND_SEND_TAG);
}
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