309 lines
6.4 KiB
C
309 lines
6.4 KiB
C
/*
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* Copyright (C) 2003-2009 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "output_all.h"
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#include "output_internal.h"
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#include "output_control.h"
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#include "conf.h"
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#include <assert.h>
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#include <string.h>
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#undef G_LOG_DOMAIN
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#define G_LOG_DOMAIN "output"
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static struct audio_format input_audio_format;
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static struct audio_output *audio_outputs;
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static unsigned int num_audio_outputs;
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unsigned int audio_output_count(void)
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{
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return num_audio_outputs;
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}
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struct audio_output *
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audio_output_get(unsigned i)
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{
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assert(i < num_audio_outputs);
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return &audio_outputs[i];
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}
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struct audio_output *
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audio_output_find(const char *name)
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{
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for (unsigned i = 0; i < num_audio_outputs; ++i) {
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struct audio_output *ao = audio_output_get(i);
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if (strcmp(ao->name, name) == 0)
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return ao;
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}
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/* name not found */
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return NULL;
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}
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static unsigned
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audio_output_config_count(void)
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{
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unsigned int nr = 0;
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const struct config_param *param = NULL;
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while ((param = config_get_next_param(CONF_AUDIO_OUTPUT, param)))
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nr++;
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if (!nr)
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nr = 1; /* we'll always have at least one device */
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return nr;
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}
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void
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audio_output_all_init(void)
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{
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const struct config_param *param = NULL;
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unsigned int i;
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GError *error = NULL;
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notify_init(&audio_output_client_notify);
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num_audio_outputs = audio_output_config_count();
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audio_outputs = g_new(struct audio_output, num_audio_outputs);
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for (i = 0; i < num_audio_outputs; i++)
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{
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struct audio_output *output = &audio_outputs[i];
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unsigned int j;
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param = config_get_next_param(CONF_AUDIO_OUTPUT, param);
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/* only allow param to be NULL if there just one audioOutput */
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assert(param || (num_audio_outputs == 1));
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if (!audio_output_init(output, param, &error))
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g_error("line %i: %s", param->line, error->message);
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/* require output names to be unique: */
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for (j = 0; j < i; j++) {
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if (!strcmp(output->name, audio_outputs[j].name)) {
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g_error("output devices with identical "
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"names: %s\n", output->name);
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}
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}
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}
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}
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void
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audio_output_all_finish(void)
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{
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unsigned int i;
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for (i = 0; i < num_audio_outputs; i++) {
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audio_output_finish(&audio_outputs[i]);
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}
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g_free(audio_outputs);
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audio_outputs = NULL;
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num_audio_outputs = 0;
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notify_deinit(&audio_output_client_notify);
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}
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/**
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* Determine if all (active) outputs have finished the current
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* command.
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*/
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static bool
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audio_output_all_finished(void)
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{
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for (unsigned i = 0; i < num_audio_outputs; ++i)
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if (audio_output_is_open(&audio_outputs[i]) &&
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!audio_output_command_is_finished(&audio_outputs[i]))
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return false;
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return true;
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}
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static void audio_output_wait_all(void)
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{
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while (!audio_output_all_finished())
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notify_wait(&audio_output_client_notify);
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}
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/**
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* Resets the "reopen" flag on all audio devices. MPD should
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* immediately retry to open the device instead of waiting for the
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* timeout when the user wants to start playback.
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*/
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static void
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audio_output_all_reset_reopen(void)
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{
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for (unsigned i = 0; i < num_audio_outputs; ++i) {
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struct audio_output *ao = &audio_outputs[i];
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if (!ao->open && ao->fail_timer != NULL) {
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g_timer_destroy(ao->fail_timer);
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ao->fail_timer = NULL;
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}
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}
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}
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/**
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* Opens all output devices which are enabled, but closed.
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*
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* @return true if there is at least open output device which is open
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*/
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static bool
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audio_output_all_update(void)
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{
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unsigned int i;
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bool ret = false;
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if (!audio_format_defined(&input_audio_format))
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return false;
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for (i = 0; i < num_audio_outputs; ++i)
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ret = audio_output_update(&audio_outputs[i],
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&input_audio_format) || ret;
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return ret;
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}
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bool
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audio_output_all_play(const char *buffer, size_t length)
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{
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bool ret = false;
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unsigned int i;
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assert(length > 0);
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/* no partial frames allowed */
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assert((length % audio_format_frame_size(&input_audio_format)) == 0);
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audio_output_all_update();
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for (i = 0; i < num_audio_outputs; ++i)
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if (audio_output_is_open(&audio_outputs[i]))
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audio_output_play(&audio_outputs[i],
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buffer, length);
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while (true) {
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bool finished = true;
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for (i = 0; i < num_audio_outputs; ++i) {
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struct audio_output *ao = &audio_outputs[i];
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if (!audio_output_is_open(ao))
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continue;
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if (audio_output_command_is_finished(ao))
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ret = true;
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else {
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finished = false;
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audio_output_signal(ao);
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}
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}
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if (finished)
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break;
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notify_wait(&audio_output_client_notify);
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};
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return ret;
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}
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bool
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audio_output_all_open(const struct audio_format *audio_format)
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{
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bool ret = false, enabled = false;
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unsigned int i;
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if (audio_format != NULL)
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input_audio_format = *audio_format;
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audio_output_all_reset_reopen();
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audio_output_all_update();
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for (i = 0; i < num_audio_outputs; ++i) {
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if (audio_outputs[i].enabled)
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enabled = true;
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if (audio_outputs[i].open)
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ret = true;
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}
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if (!enabled)
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g_warning("All audio outputs are disabled");
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if (!ret)
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/* close all devices if there was an error */
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audio_output_all_close();
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return ret;
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}
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void
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audio_output_all_pause(void)
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{
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unsigned int i;
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audio_output_all_update();
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for (i = 0; i < num_audio_outputs; ++i)
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if (audio_output_is_open(&audio_outputs[i]))
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audio_output_pause(&audio_outputs[i]);
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audio_output_wait_all();
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}
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void
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audio_output_all_cancel(void)
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{
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unsigned int i;
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audio_output_all_update();
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for (i = 0; i < num_audio_outputs; ++i) {
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if (audio_output_is_open(&audio_outputs[i]))
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audio_output_cancel(&audio_outputs[i]);
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}
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audio_output_wait_all();
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}
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void
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audio_output_all_close(void)
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{
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unsigned int i;
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for (i = 0; i < num_audio_outputs; ++i)
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audio_output_close(&audio_outputs[i]);
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}
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void
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audio_output_all_tag(const struct tag *tag)
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{
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unsigned int i;
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for (i = 0; i < num_audio_outputs; ++i)
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if (audio_output_is_open(&audio_outputs[i]))
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audio_output_send_tag(&audio_outputs[i], tag);
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audio_output_wait_all();
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}
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