0aee49bdf8
This updates the copyright header to all be the same, which is pretty much an update of where to mail request for a copy of the GPL and the years of the MPD project. This also puts all committers under 'The Music Player Project' umbrella. These entries should go individually in the AUTHORS file, for consistancy.
139 lines
3.0 KiB
C
139 lines
3.0 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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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPD_DECODER_CONTROL_H
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#define MPD_DECODER_CONTROL_H
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#include "decoder_command.h"
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#include "audio_format.h"
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#include "notify.h"
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#include <assert.h>
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#define DECODE_TYPE_FILE 0
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#define DECODE_TYPE_URL 1
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enum decoder_state {
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DECODE_STATE_STOP = 0,
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DECODE_STATE_START,
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DECODE_STATE_DECODE,
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/**
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* The last "START" command failed, because there was an I/O
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* error or because no decoder was able to decode the file.
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* This state will only come after START; once the state has
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* turned to DECODE, by definition no such error can occur.
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*/
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DECODE_STATE_ERROR,
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};
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struct decoder_control {
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/** the handle of the decoder thread, or NULL if the decoder
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thread isn't running */
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GThread *thread;
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struct notify notify;
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volatile enum decoder_state state;
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volatile enum decoder_command command;
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bool quit;
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bool seek_error;
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bool seekable;
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volatile double seek_where;
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/** the format of the song file */
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struct audio_format in_audio_format;
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/** the format being sent to the music pipe */
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struct audio_format out_audio_format;
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struct song *current_song;
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struct song *next_song;
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float total_time;
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/** the #music_chunk allocator */
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struct music_buffer *buffer;
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/** the destination pipe for decoded chunks */
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struct music_pipe *pipe;
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};
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extern struct decoder_control dc;
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void dc_init(void);
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void dc_deinit(void);
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static inline bool decoder_is_idle(void)
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{
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return (dc.state == DECODE_STATE_STOP ||
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dc.state == DECODE_STATE_ERROR) &&
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dc.command != DECODE_COMMAND_START;
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}
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static inline bool decoder_is_starting(void)
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{
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return dc.command == DECODE_COMMAND_START ||
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dc.state == DECODE_STATE_START;
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}
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static inline bool decoder_has_failed(void)
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{
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assert(dc.command == DECODE_COMMAND_NONE);
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return dc.state == DECODE_STATE_ERROR;
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}
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static inline struct song *
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decoder_current_song(void)
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{
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switch (dc.state) {
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case DECODE_STATE_STOP:
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case DECODE_STATE_ERROR:
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return NULL;
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case DECODE_STATE_START:
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case DECODE_STATE_DECODE:
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return dc.current_song;
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}
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assert(false);
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return NULL;
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}
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void
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dc_command_wait(struct notify *notify);
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void
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dc_start(struct notify *notify, struct song *song);
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void
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dc_start_async(struct song *song);
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void
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dc_stop(struct notify *notify);
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bool
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dc_seek(struct notify *notify, double where);
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void
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dc_quit(void);
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#endif
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