d1322b7159
Namely, introduce buffer_get_buffer() and buffer_release_buffer(). buffer_get_buffer() aquires all available and grabs a lock, attempting to call buffer_alloc() or buffer_get_buffer() while this lock is locked will cause a panicf() (doesn't actually happen, but is for debugging purpose). buffer_release_buffer() unlocks that lock and can additionally increment the audiobuf buffer to make an allocation. Pass 0 to only unlock if buffer was used temporarily only. buffer_available() is a replacement function to query audiobuflen, i.e. what's left in the buffer. Buffer init is moved up in the init chain and handles ipodvideo64mb internally. Further changes happened to mp3data.c and talk.c as to not call the above API functions, but get the buffer from callers. The caller is the audio system which has the buffer lock while mp3data.c and talk mess with the buffer. mpeg.c now implements some buffer related functions of playback.h, especially audio_get_buffer(), allowing to reduce #ifdef hell a tiny bit. audiobuf and audiobufend are local to buffer.c now. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30308 a1c6a512-1295-4272-9138-f99709370657
161 lines
4.3 KiB
C
161 lines
4.3 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2005 Miika Pekkarinen
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef _PLAYBACK_H
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#define _PLAYBACK_H
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#include <stdbool.h>
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#include <stdlib.h>
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#include "config.h"
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#if CONFIG_CODEC == SWCODEC
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/* Including the code for fast previews is entirely optional since it
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does add two more mp3entry's - for certain targets it may be less
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beneficial such as flash-only storage */
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#if MEMORYSIZE > 2
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#define AUDIO_FAST_SKIP_PREVIEW
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#endif
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#endif /* CONFIG_CODEC == SWCODEC */
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#ifdef HAVE_ALBUMART
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#include "bmp.h"
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#include "metadata.h"
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/*
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* Returns the handle id of the buffered albumart for the given slot id
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**/
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int playback_current_aa_hid(int slot);
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/*
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* Hands out an albumart slot for buffering albumart using the size
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* int the passed dim struct, it copies the data of dim in order to
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* be safe to be reused for other code
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*
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* The slot may be reused if other code calls this with the same dimensions
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* in dim, so if you change dim release and claim a new slot
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*
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* Save to call from other threads */
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int playback_claim_aa_slot(struct dim *dim);
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/*
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* Releases the albumart slot with given id
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*
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* Save to call from other threads */
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void playback_release_aa_slot(int slot);
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struct bufopen_bitmap_data {
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struct dim *dim;
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struct mp3_albumart *embedded_albumart;
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};
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#endif
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/* Functions */
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bool audio_is_thread_ready(void);
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int audio_track_count(void);
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long audio_filebufused(void);
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void audio_pre_ff_rewind(void);
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void audio_skip(int direction);
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void audio_set_cuesheet(int enable);
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#ifdef HAVE_CROSSFADE
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void audio_set_crossfade(int enable);
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#endif
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enum
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{
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AUDIO_WANT_PLAYBACK = 0,
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AUDIO_WANT_VOICE,
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};
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bool audio_restore_playback(int type); /* Restores the audio buffer to handle the requested playback */
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size_t audio_get_filebuflen(void);
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bool audio_buffer_state_trashed(void);
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/* Automatic transition? Only valid to call during the track change events,
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otherwise the result is undefined. */
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bool audio_automatic_skip(void);
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/* Define one constant that includes recording related functionality */
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#if defined(HAVE_RECORDING) && !defined(SIMULATOR)
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#define AUDIO_HAVE_RECORDING
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#endif
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enum {
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Q_NULL = 0, /* reserved */
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/* -> audio */
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Q_AUDIO_PLAY = 1,
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Q_AUDIO_STOP,
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Q_AUDIO_PAUSE,
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Q_AUDIO_SKIP,
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Q_AUDIO_PRE_FF_REWIND,
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Q_AUDIO_FF_REWIND,
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Q_AUDIO_FLUSH,
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Q_AUDIO_DIR_SKIP,
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/* pcmbuf -> audio */
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Q_AUDIO_TRACK_CHANGED,
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/* audio -> audio */
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Q_AUDIO_FILL_BUFFER, /* continue buffering next track */
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/* buffering -> audio */
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Q_AUDIO_BUFFERING, /* some buffer event */
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Q_AUDIO_FINISH_LOAD_TRACK, /* metadata is buffered */
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Q_AUDIO_HANDLE_FINISHED, /* some other type is buffered */
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/* codec -> audio (*) */
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Q_AUDIO_CODEC_SEEK_COMPLETE,
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Q_AUDIO_CODEC_COMPLETE,
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/* audio -> codec */
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Q_CODEC_LOAD,
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Q_CODEC_RUN,
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Q_CODEC_PAUSE,
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Q_CODEC_SEEK,
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Q_CODEC_STOP,
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Q_CODEC_UNLOAD,
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/*- miscellanous -*/
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#ifdef AUDIO_HAVE_RECORDING
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/* -> codec */
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Q_AUDIO_LOAD_ENCODER, /* load an encoder for recording */
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#endif
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/* -> codec */
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Q_CODEC_DO_CALLBACK,
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/*- settings -*/
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#ifdef HAVE_DISK_STORAGE
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/* -> audio */
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Q_AUDIO_UPDATE_WATERMARK, /* buffering watermark needs updating */
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#endif
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/* -> audio */
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Q_AUDIO_REMAKE_AUDIO_BUFFER, /* buffer needs to be reinitialized */
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};
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/* (*) If you change these, you must check audio_clear_track_notifications
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in playback.c for correctness */
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#endif /* _PLAYBACK_H */
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