111 lines
2.5 KiB
C
111 lines
2.5 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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/*
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* Functions for dealing with all configured (enabled) audion outputs
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* at once.
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*
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*/
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#ifndef OUTPUT_ALL_H
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#define OUTPUT_ALL_H
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#include <stdbool.h>
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#include <stddef.h>
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struct audio_format;
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struct tag;
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/**
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* Global initialization: load audio outputs from the configuration
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* file and initialize them.
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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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* Global finalization: free memory occupied by audio outputs. All
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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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* Returns the total number of audio output devices, including those
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* who are disabled right now.
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*/
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unsigned int audio_output_count(void);
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/**
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* Returns the "i"th audio output device.
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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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* Returns the audio output device with the specified name. Returns
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* NULL if the name does not exist.
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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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* Opens all audio outputs which are not disabled.
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*
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* @param audio_format the preferred audio format, or NULL to reuse
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* the previous format
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* @return true on success, false on failure
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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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* Closes all audio outputs.
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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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* Play a chunk of audio data.
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*
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* @return true on success, false if no audio output was able to play
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* (all closed then)
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*/
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bool
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audio_output_all_play(const char *data, size_t size);
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/**
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* Send metadata for the next chunk.
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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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* Puts all audio outputs into pause mode. Most implementations will
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* simply close it then.
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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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* Try to cancel data which may still be in the device's buffers.
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*/
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void
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audio_output_all_cancel(void);
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#endif
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