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authorMichael Sevakis <jethead71@rockbox.org>2013-05-31 02:41:02 -0400
committerMichael Sevakis <jethead71@rockbox.org>2013-05-31 03:20:35 -0400
commit5857c44017a1641fce7f00da7f16c143daacbaf6 (patch)
treeb8a7ff134977ee8dd6b25b5591f4eb81172f74ab /apps/audio_thread.h
parentdf6e1bcce5071e02b5cd46736bff87ca0dcceffe (diff)
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Refactor audio thread to run both recording and playback.
Eliminates the pcmrec thread and keeps playback and recording engine operation mutually-exclusive. audio_thread.c contains the audio thread which branches to the correct engine depending upon the request. It also handles the main audio initialization. Moves pcm_init into main.c just before dsp_init because I don't want that one in audio_init in the new file. (Also makes revision df6e1bc pointless ;) Change-Id: Ifc1db24404e6d8dd9ac42d9f4dfbc207aa9a26e1
Diffstat (limited to 'apps/audio_thread.h')
-rw-r--r--apps/audio_thread.h102
1 files changed, 102 insertions, 0 deletions
diff --git a/apps/audio_thread.h b/apps/audio_thread.h
new file mode 100644
index 0000000000..7e0ad28849
--- /dev/null
+++ b/apps/audio_thread.h
@@ -0,0 +1,102 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id$
+ *
+ * Copyright (C) 2005-2007 Miika Pekkarinen
+ * Copyright (C) 2007-2008 Nicolas Pennequin
+ * Copyright (C) 2011-2013 Michael Sevakis
+ *
+ * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#ifndef AUDIO_THREAD_H
+#define AUDIO_THREAD_H
+
+/* Define one constant that includes recording related functionality */
+#if defined(HAVE_RECORDING) && !defined(SIMULATOR)
+#define AUDIO_HAVE_RECORDING
+#endif
+
+enum
+{
+ Q_NULL = 0, /* reserved */
+
+ /* -> audio */
+ Q_AUDIO_PLAY,
+ Q_AUDIO_STOP,
+ Q_AUDIO_PAUSE,
+ Q_AUDIO_SKIP,
+ Q_AUDIO_PRE_FF_REWIND,
+ Q_AUDIO_FF_REWIND,
+ Q_AUDIO_FLUSH,
+ Q_AUDIO_DIR_SKIP,
+
+ /* pcmbuf -> audio */
+ Q_AUDIO_TRACK_CHANGED,
+
+ /* audio -> audio */
+ Q_AUDIO_FILL_BUFFER, /* continue buffering next track */
+
+ /* buffering -> audio */
+ Q_AUDIO_BUFFERING, /* some buffer event */
+ Q_AUDIO_FINISH_LOAD_TRACK, /* metadata is buffered */
+ Q_AUDIO_HANDLE_FINISHED, /* some other type is buffered */
+
+ /* codec -> audio (*) */
+ Q_AUDIO_CODEC_SEEK_COMPLETE,
+ Q_AUDIO_CODEC_COMPLETE,
+
+ /* audio -> codec */
+ Q_CODEC_LOAD,
+ Q_CODEC_RUN,
+ Q_CODEC_PAUSE,
+ Q_CODEC_SEEK,
+ Q_CODEC_STOP,
+ Q_CODEC_UNLOAD,
+
+ /* -> codec */
+ Q_CODEC_DO_CALLBACK,
+
+ /* -> recording */
+#ifdef HAVE_RECORDING
+ Q_AUDIO_INIT_RECORDING,
+ Q_AUDIO_CLOSE_RECORDING,
+ Q_AUDIO_RECORDING_OPTIONS,
+ Q_AUDIO_RECORD,
+ Q_AUDIO_RESUME,
+#endif
+
+ /*- settings -*/
+
+#ifdef HAVE_DISK_STORAGE
+ /* -> audio */
+ Q_AUDIO_UPDATE_WATERMARK, /* buffering watermark needs updating */
+#endif
+ /* -> audio */
+ Q_AUDIO_REMAKE_AUDIO_BUFFER, /* buffer needs to be reinitialized */
+};
+
+/* (*) If you change these, you must check audio_clear_track_notifications
+ in playback.c for correctness */
+
+void audio_init(void);
+void playback_init(void);
+unsigned int playback_status(void);
+
+void audio_playback_handler(struct queue_event *ev);
+#ifdef AUDIO_HAVE_RECORDING
+void audio_recording_handler(struct queue_event *ev);
+#endif
+
+#endif /* AUDIO_THREAD_H */