332 lines
8.6 KiB
C++
332 lines
8.6 KiB
C++
/*
|
|
* Copyright (C) 2003-2013 The Music Player Daemon Project
|
|
* 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.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include "OutputInternal.hxx"
|
|
#include "OutputControl.hxx"
|
|
#include "OutputList.hxx"
|
|
#include "OutputError.hxx"
|
|
#include "OutputAPI.hxx"
|
|
#include "FilterConfig.hxx"
|
|
#include "AudioParser.hxx"
|
|
#include "MixerList.hxx"
|
|
#include "MixerType.hxx"
|
|
#include "MixerControl.hxx"
|
|
#include "mixer/SoftwareMixerPlugin.hxx"
|
|
#include "FilterPlugin.hxx"
|
|
#include "FilterRegistry.hxx"
|
|
#include "filter/AutoConvertFilterPlugin.hxx"
|
|
#include "filter/ReplayGainFilterPlugin.hxx"
|
|
#include "filter/ChainFilterPlugin.hxx"
|
|
#include "ConfigError.hxx"
|
|
#include "ConfigGlobal.hxx"
|
|
#include "util/Error.hxx"
|
|
#include "Log.hxx"
|
|
|
|
#include <assert.h>
|
|
#include <string.h>
|
|
|
|
#define AUDIO_OUTPUT_TYPE "type"
|
|
#define AUDIO_OUTPUT_NAME "name"
|
|
#define AUDIO_OUTPUT_FORMAT "format"
|
|
#define AUDIO_FILTERS "filters"
|
|
|
|
static const struct audio_output_plugin *
|
|
audio_output_detect(Error &error)
|
|
{
|
|
LogDefault(output_domain, "Attempt to detect audio output device");
|
|
|
|
audio_output_plugins_for_each(plugin) {
|
|
if (plugin->test_default_device == nullptr)
|
|
continue;
|
|
|
|
FormatDefault(output_domain,
|
|
"Attempting to detect a %s audio device",
|
|
plugin->name);
|
|
if (ao_plugin_test_default_device(plugin))
|
|
return plugin;
|
|
}
|
|
|
|
error.Set(output_domain, "Unable to detect an audio device");
|
|
return nullptr;
|
|
}
|
|
|
|
/**
|
|
* Determines the mixer type which should be used for the specified
|
|
* configuration block.
|
|
*
|
|
* This handles the deprecated options mixer_type (global) and
|
|
* mixer_enabled, if the mixer_type setting is not configured.
|
|
*/
|
|
gcc_pure
|
|
static enum mixer_type
|
|
audio_output_mixer_type(const config_param ¶m)
|
|
{
|
|
/* read the local "mixer_type" setting */
|
|
const char *p = param.GetBlockValue("mixer_type");
|
|
if (p != nullptr)
|
|
return mixer_type_parse(p);
|
|
|
|
/* try the local "mixer_enabled" setting next (deprecated) */
|
|
if (!param.GetBlockValue("mixer_enabled", true))
|
|
return MIXER_TYPE_NONE;
|
|
|
|
/* fall back to the global "mixer_type" setting (also
|
|
deprecated) */
|
|
return mixer_type_parse(config_get_string(CONF_MIXER_TYPE,
|
|
"hardware"));
|
|
}
|
|
|
|
static Mixer *
|
|
audio_output_load_mixer(struct audio_output *ao,
|
|
const config_param ¶m,
|
|
const struct mixer_plugin *plugin,
|
|
Filter &filter_chain,
|
|
Error &error)
|
|
{
|
|
Mixer *mixer;
|
|
|
|
switch (audio_output_mixer_type(param)) {
|
|
case MIXER_TYPE_NONE:
|
|
case MIXER_TYPE_UNKNOWN:
|
|
return nullptr;
|
|
|
|
case MIXER_TYPE_HARDWARE:
|
|
if (plugin == nullptr)
|
|
return nullptr;
|
|
|
|
return mixer_new(plugin, ao, param, error);
|
|
|
|
case MIXER_TYPE_SOFTWARE:
|
|
mixer = mixer_new(&software_mixer_plugin, nullptr,
|
|
config_param(),
|
|
IgnoreError());
|
|
assert(mixer != nullptr);
|
|
|
|
filter_chain_append(filter_chain, "software_mixer",
|
|
software_mixer_get_filter(mixer));
|
|
return mixer;
|
|
}
|
|
|
|
assert(false);
|
|
gcc_unreachable();
|
|
}
|
|
|
|
bool
|
|
ao_base_init(struct audio_output *ao,
|
|
const struct audio_output_plugin *plugin,
|
|
const config_param ¶m, Error &error)
|
|
{
|
|
assert(ao != nullptr);
|
|
assert(plugin != nullptr);
|
|
assert(plugin->finish != nullptr);
|
|
assert(plugin->open != nullptr);
|
|
assert(plugin->close != nullptr);
|
|
assert(plugin->play != nullptr);
|
|
|
|
if (!param.IsNull()) {
|
|
ao->name = param.GetBlockValue(AUDIO_OUTPUT_NAME);
|
|
if (ao->name == nullptr) {
|
|
error.Set(config_domain,
|
|
"Missing \"name\" configuration");
|
|
return false;
|
|
}
|
|
|
|
const char *p = param.GetBlockValue(AUDIO_OUTPUT_FORMAT);
|
|
if (p != nullptr) {
|
|
bool success =
|
|
audio_format_parse(ao->config_audio_format,
|
|
p, true, error);
|
|
if (!success)
|
|
return false;
|
|
} else
|
|
ao->config_audio_format.Clear();
|
|
} else {
|
|
ao->name = "default detected output";
|
|
|
|
ao->config_audio_format.Clear();
|
|
}
|
|
|
|
ao->plugin = plugin;
|
|
ao->tags = param.GetBlockValue("tags", true);
|
|
ao->always_on = param.GetBlockValue("always_on", false);
|
|
ao->enabled = param.GetBlockValue("enabled", true);
|
|
ao->really_enabled = false;
|
|
ao->open = false;
|
|
ao->pause = false;
|
|
ao->allow_play = true;
|
|
ao->in_playback_loop = false;
|
|
ao->woken_for_play = false;
|
|
ao->fail_timer = nullptr;
|
|
|
|
/* set up the filter chain */
|
|
|
|
ao->filter = filter_chain_new();
|
|
assert(ao->filter != nullptr);
|
|
|
|
/* create the normalization filter (if configured) */
|
|
|
|
if (config_get_bool(CONF_VOLUME_NORMALIZATION, false)) {
|
|
Filter *normalize_filter =
|
|
filter_new(&normalize_filter_plugin, config_param(),
|
|
IgnoreError());
|
|
assert(normalize_filter != nullptr);
|
|
|
|
filter_chain_append(*ao->filter, "normalize",
|
|
autoconvert_filter_new(normalize_filter));
|
|
}
|
|
|
|
Error filter_error;
|
|
filter_chain_parse(*ao->filter,
|
|
param.GetBlockValue(AUDIO_FILTERS, ""),
|
|
filter_error);
|
|
|
|
// It's not really fatal - Part of the filter chain has been set up already
|
|
// and even an empty one will work (if only with unexpected behaviour)
|
|
if (filter_error.IsDefined())
|
|
FormatError(filter_error,
|
|
"Failed to initialize filter chain for '%s'",
|
|
ao->name);
|
|
|
|
ao->command = AO_COMMAND_NONE;
|
|
|
|
ao->mixer = nullptr;
|
|
ao->replay_gain_filter = nullptr;
|
|
ao->other_replay_gain_filter = nullptr;
|
|
|
|
/* done */
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
audio_output_setup(struct audio_output *ao, const config_param ¶m,
|
|
Error &error)
|
|
{
|
|
|
|
/* create the replay_gain filter */
|
|
|
|
const char *replay_gain_handler =
|
|
param.GetBlockValue("replay_gain_handler", "software");
|
|
|
|
if (strcmp(replay_gain_handler, "none") != 0) {
|
|
ao->replay_gain_filter = filter_new(&replay_gain_filter_plugin,
|
|
param, IgnoreError());
|
|
assert(ao->replay_gain_filter != nullptr);
|
|
|
|
ao->replay_gain_serial = 0;
|
|
|
|
ao->other_replay_gain_filter = filter_new(&replay_gain_filter_plugin,
|
|
param,
|
|
IgnoreError());
|
|
assert(ao->other_replay_gain_filter != nullptr);
|
|
|
|
ao->other_replay_gain_serial = 0;
|
|
} else {
|
|
ao->replay_gain_filter = nullptr;
|
|
ao->other_replay_gain_filter = nullptr;
|
|
}
|
|
|
|
/* set up the mixer */
|
|
|
|
Error mixer_error;
|
|
ao->mixer = audio_output_load_mixer(ao, param,
|
|
ao->plugin->mixer_plugin,
|
|
*ao->filter, mixer_error);
|
|
if (ao->mixer == nullptr && mixer_error.IsDefined())
|
|
FormatError(mixer_error,
|
|
"Failed to initialize hardware mixer for '%s'",
|
|
ao->name);
|
|
|
|
/* use the hardware mixer for replay gain? */
|
|
|
|
if (strcmp(replay_gain_handler, "mixer") == 0) {
|
|
if (ao->mixer != nullptr)
|
|
replay_gain_filter_set_mixer(ao->replay_gain_filter,
|
|
ao->mixer, 100);
|
|
else
|
|
FormatError(output_domain,
|
|
"No such mixer for output '%s'", ao->name);
|
|
} else if (strcmp(replay_gain_handler, "software") != 0 &&
|
|
ao->replay_gain_filter != nullptr) {
|
|
error.Set(config_domain,
|
|
"Invalid \"replay_gain_handler\" value");
|
|
return false;
|
|
}
|
|
|
|
/* the "convert" filter must be the last one in the chain */
|
|
|
|
ao->convert_filter = filter_new(&convert_filter_plugin, config_param(),
|
|
IgnoreError());
|
|
assert(ao->convert_filter != nullptr);
|
|
|
|
filter_chain_append(*ao->filter, "convert", ao->convert_filter);
|
|
|
|
return true;
|
|
}
|
|
|
|
struct audio_output *
|
|
audio_output_new(const config_param ¶m,
|
|
PlayerControl &pc,
|
|
Error &error)
|
|
{
|
|
const struct audio_output_plugin *plugin;
|
|
|
|
if (!param.IsNull()) {
|
|
const char *p;
|
|
|
|
p = param.GetBlockValue(AUDIO_OUTPUT_TYPE);
|
|
if (p == nullptr) {
|
|
error.Set(config_domain,
|
|
"Missing \"type\" configuration");
|
|
return nullptr;
|
|
}
|
|
|
|
plugin = audio_output_plugin_get(p);
|
|
if (plugin == nullptr) {
|
|
error.Format(config_domain,
|
|
"No such audio output plugin: %s", p);
|
|
return nullptr;
|
|
}
|
|
} else {
|
|
LogWarning(output_domain,
|
|
"No 'audio_output' defined in config file");
|
|
|
|
plugin = audio_output_detect(error);
|
|
if (plugin == nullptr)
|
|
return nullptr;
|
|
|
|
FormatDefault(output_domain,
|
|
"Successfully detected a %s audio device",
|
|
plugin->name);
|
|
}
|
|
|
|
struct audio_output *ao = ao_plugin_init(plugin, param, error);
|
|
if (ao == nullptr)
|
|
return nullptr;
|
|
|
|
if (!audio_output_setup(ao, param, error)) {
|
|
ao_plugin_finish(ao);
|
|
return nullptr;
|
|
}
|
|
|
|
ao->player_control = &pc;
|
|
return ao;
|
|
}
|