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Diffstat (limited to 'src/OutputInternal.hxx')
| -rw-r--r-- | src/OutputInternal.hxx | 297 |
1 files changed, 0 insertions, 297 deletions
diff --git a/src/OutputInternal.hxx b/src/OutputInternal.hxx deleted file mode 100644 index c07cdf856..000000000 --- a/src/OutputInternal.hxx +++ /dev/null @@ -1,297 +0,0 @@ -/* - * 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. - */ - -#ifndef MPD_OUTPUT_INTERNAL_HXX -#define MPD_OUTPUT_INTERNAL_HXX - -#include "AudioFormat.hxx" -#include "pcm/PcmBuffer.hxx" -#include "thread/Mutex.hxx" -#include "thread/Cond.hxx" -#include "thread/Thread.hxx" - -#include <time.h> - -class Error; -class Filter; -class MusicPipe; -struct config_param; -struct PlayerControl; -typedef struct _GTimer GTimer; - -enum audio_output_command { - AO_COMMAND_NONE = 0, - AO_COMMAND_ENABLE, - AO_COMMAND_DISABLE, - AO_COMMAND_OPEN, - - /** - * This command is invoked when the input audio format - * changes. - */ - AO_COMMAND_REOPEN, - - AO_COMMAND_CLOSE, - AO_COMMAND_PAUSE, - - /** - * Drains the internal (hardware) buffers of the device. This - * operation may take a while to complete. - */ - AO_COMMAND_DRAIN, - - AO_COMMAND_CANCEL, - AO_COMMAND_KILL -}; - -struct audio_output { - /** - * The device's configured display name. - */ - const char *name; - - /** - * The plugin which implements this output device. - */ - const struct audio_output_plugin *plugin; - - /** - * The #mixer object associated with this audio output device. - * May be nullptr if none is available, or if software volume is - * configured. - */ - class Mixer *mixer; - - /** - * Will this output receive tags from the decoder? The - * default is true, but it may be configured to false to - * suppress sending tags to the output. - */ - bool tags; - - /** - * Shall this output always play something (i.e. silence), - * even when playback is stopped? - */ - bool always_on; - - /** - * Has the user enabled this device? - */ - bool enabled; - - /** - * Is this device actually enabled, i.e. the "enable" method - * has succeeded? - */ - bool really_enabled; - - /** - * Is the device (already) open and functional? - * - * This attribute may only be modified by the output thread. - * It is protected with #mutex: write accesses inside the - * output thread and read accesses outside of it may only be - * performed while the lock is held. - */ - bool open; - - /** - * Is the device paused? i.e. the output thread is in the - * ao_pause() loop. - */ - bool pause; - - /** - * When this flag is set, the output thread will not do any - * playback. It will wait until the flag is cleared. - * - * This is used to synchronize the "clear" operation on the - * shared music pipe during the CANCEL command. - */ - bool allow_play; - - /** - * True while the OutputThread is inside ao_play(). This - * means the PlayerThread does not need to wake up the - * OutputThread when new chunks are added to the MusicPipe, - * because the OutputThread is already watching that. - */ - bool in_playback_loop; - - /** - * Has the OutputThread been woken up to play more chunks? - * This is set by audio_output_play() and reset by ao_play() - * to reduce the number of duplicate wakeups. - */ - bool woken_for_play; - - /** - * If not nullptr, the device has failed, and this timer is used - * to estimate how long it should stay disabled (unless - * explicitly reopened with "play"). - */ - GTimer *fail_timer; - - /** - * The configured audio format. - */ - AudioFormat config_audio_format; - - /** - * The audio_format in which audio data is received from the - * player thread (which in turn receives it from the decoder). - */ - AudioFormat in_audio_format; - - /** - * The audio_format which is really sent to the device. This - * is basically config_audio_format (if configured) or - * in_audio_format, but may have been modified by - * plugin->open(). - */ - AudioFormat out_audio_format; - - /** - * The buffer used to allocate the cross-fading result. - */ - PcmBuffer cross_fade_buffer; - - /** - * The filter object of this audio output. This is an - * instance of chain_filter_plugin. - */ - Filter *filter; - - /** - * The replay_gain_filter_plugin instance of this audio - * output. - */ - Filter *replay_gain_filter; - - /** - * The serial number of the last replay gain info. 0 means no - * replay gain info was available. - */ - unsigned replay_gain_serial; - - /** - * The replay_gain_filter_plugin instance of this audio - * output, to be applied to the second chunk during - * cross-fading. - */ - Filter *other_replay_gain_filter; - - /** - * The serial number of the last replay gain info by the - * "other" chunk during cross-fading. - */ - unsigned other_replay_gain_serial; - - /** - * The convert_filter_plugin instance of this audio output. - * It is the last item in the filter chain, and is responsible - * for converting the input data into the appropriate format - * for this audio output. - */ - Filter *convert_filter; - - /** - * The thread handle, or nullptr if the output thread isn't - * running. - */ - Thread thread; - - /** - * The next command to be performed by the output thread. - */ - enum audio_output_command command; - - /** - * The music pipe which provides music chunks to be played. - */ - const MusicPipe *pipe; - - /** - * This mutex protects #open, #fail_timer, #chunk and - * #chunk_finished. - */ - Mutex mutex; - - /** - * This condition object wakes up the output thread after - * #command has been set. - */ - Cond cond; - - /** - * The PlayerControl object which "owns" this output. This - * object is needed to signal command completion. - */ - PlayerControl *player_control; - - /** - * The #music_chunk which is currently being played. All - * chunks before this one may be returned to the - * #music_buffer, because they are not going to be used by - * this output anymore. - */ - const struct music_chunk *chunk; - - /** - * Has the output finished playing #chunk? - */ - bool chunk_finished; -}; - -/** - * Notify object used by the thread's client, i.e. we will send a - * notify signal to this object, expecting the caller to wait on it. - */ -extern struct notify audio_output_client_notify; - -static inline bool -audio_output_is_open(const struct audio_output *ao) -{ - return ao->open; -} - -static inline bool -audio_output_command_is_finished(const struct audio_output *ao) -{ - return ao->command == AO_COMMAND_NONE; -} - -struct audio_output * -audio_output_new(const config_param ¶m, - PlayerControl &pc, - Error &error); - -bool -ao_base_init(struct audio_output *ao, - const struct audio_output_plugin *plugin, - const config_param ¶m, Error &error); - -void -ao_base_finish(struct audio_output *ao); - -void -audio_output_free(struct audio_output *ao); - -#endif |