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Diffstat (limited to 'src/decoder_control.h')
| -rw-r--r-- | src/decoder_control.h | 277 |
1 files changed, 0 insertions, 277 deletions
diff --git a/src/decoder_control.h b/src/decoder_control.h deleted file mode 100644 index 566b153ee..000000000 --- a/src/decoder_control.h +++ /dev/null @@ -1,277 +0,0 @@ -/* - * Copyright (C) 2003-2011 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_DECODER_CONTROL_H -#define MPD_DECODER_CONTROL_H - -#include "decoder_command.h" -#include "audio_format.h" - -#include <glib.h> - -#include <assert.h> - -enum decoder_state { - DECODE_STATE_STOP = 0, - DECODE_STATE_START, - DECODE_STATE_DECODE, - - /** - * The last "START" command failed, because there was an I/O - * error or because no decoder was able to decode the file. - * This state will only come after START; once the state has - * turned to DECODE, by definition no such error can occur. - */ - DECODE_STATE_ERROR, -}; - -struct decoder_control { - /** the handle of the decoder thread, or NULL if the decoder - thread isn't running */ - GThread *thread; - - /** - * This lock protects #state and #command. - */ - GMutex *mutex; - - /** - * Trigger this object after you have modified #command. This - * is also used by the decoder thread to notify the caller - * when it has finished a command. - */ - GCond *cond; - - /** - * The trigger of this object's client. It is signalled - * whenever an event occurs. - */ - GCond *client_cond; - - enum decoder_state state; - enum decoder_command command; - - bool quit; - bool seek_error; - bool seekable; - double seek_where; - - /** the format of the song file */ - struct audio_format in_audio_format; - - /** the format being sent to the music pipe */ - struct audio_format out_audio_format; - - /** - * The song currently being decoded. This attribute is set by - * the player thread, when it sends the #DECODE_COMMAND_START - * command. - */ - const struct song *song; - - /** - * The initial seek position (in milliseconds), e.g. to the - * start of a sub-track described by a CUE file. - * - * This attribute is set by dc_start(). - */ - unsigned start_ms; - - /** - * The decoder will stop when it reaches this position (in - * milliseconds). 0 means don't stop before the end of the - * file. - * - * This attribute is set by dc_start(). - */ - unsigned end_ms; - - float total_time; - - /** the #music_chunk allocator */ - struct music_buffer *buffer; - - /** - * The destination pipe for decoded chunks. The caller thread - * owns this object, and is responsible for freeing it. - */ - struct music_pipe *pipe; - - float replay_gain_db; - float replay_gain_prev_db; - char *mixramp_start; - char *mixramp_end; - char *mixramp_prev_end; -}; - -G_GNUC_MALLOC -struct decoder_control * -dc_new(GCond *client_cond); - -void -dc_free(struct decoder_control *dc); - -/** - * Locks the #decoder_control object. - */ -static inline void -decoder_lock(struct decoder_control *dc) -{ - g_mutex_lock(dc->mutex); -} - -/** - * Unlocks the #decoder_control object. - */ -static inline void -decoder_unlock(struct decoder_control *dc) -{ - g_mutex_unlock(dc->mutex); -} - -/** - * Waits for a signal on the #decoder_control object. This function - * is only valid in the decoder thread. The object must be locked - * prior to calling this function. - */ -static inline void -decoder_wait(struct decoder_control *dc) -{ - g_cond_wait(dc->cond, dc->mutex); -} - -/** - * Signals the #decoder_control object. This function is only valid - * in the player thread. The object should be locked prior to calling - * this function. - */ -static inline void -decoder_signal(struct decoder_control *dc) -{ - g_cond_signal(dc->cond); -} - -static inline bool -decoder_is_idle(const struct decoder_control *dc) -{ - return dc->state == DECODE_STATE_STOP || - dc->state == DECODE_STATE_ERROR; -} - -static inline bool -decoder_is_starting(const struct decoder_control *dc) -{ - return dc->state == DECODE_STATE_START; -} - -static inline bool -decoder_has_failed(const struct decoder_control *dc) -{ - assert(dc->command == DECODE_COMMAND_NONE); - - return dc->state == DECODE_STATE_ERROR; -} - -static inline bool -decoder_lock_is_idle(struct decoder_control *dc) -{ - bool ret; - - decoder_lock(dc); - ret = decoder_is_idle(dc); - decoder_unlock(dc); - - return ret; -} - -static inline bool -decoder_lock_is_starting(struct decoder_control *dc) -{ - bool ret; - - decoder_lock(dc); - ret = decoder_is_starting(dc); - decoder_unlock(dc); - - return ret; -} - -static inline bool -decoder_lock_has_failed(struct decoder_control *dc) -{ - bool ret; - - decoder_lock(dc); - ret = decoder_has_failed(dc); - decoder_unlock(dc); - - return ret; -} - -static inline const struct song * -decoder_current_song(const struct decoder_control *dc) -{ - switch (dc->state) { - case DECODE_STATE_STOP: - case DECODE_STATE_ERROR: - return NULL; - - case DECODE_STATE_START: - case DECODE_STATE_DECODE: - return dc->song; - } - - assert(false); - return NULL; -} - -/** - * Start the decoder. - * - * @param the decoder - * @param song the song to be decoded - * @param start_ms see #decoder_control - * @param end_ms see #decoder_control - * @param pipe the pipe which receives the decoded chunks (owned by - * the caller) - */ -void -dc_start(struct decoder_control *dc, struct song *song, - unsigned start_ms, unsigned end_ms, - struct music_buffer *buffer, struct music_pipe *pipe); - -void -dc_stop(struct decoder_control *dc); - -bool -dc_seek(struct decoder_control *dc, double where); - -void -dc_quit(struct decoder_control *dc); - -void -dc_mixramp_start(struct decoder_control *dc, char *mixramp_start); - -void -dc_mixramp_end(struct decoder_control *dc, char *mixramp_end); - -void -dc_mixramp_prev_end(struct decoder_control *dc, char *mixramp_prev_end); - -#endif |