d0b72e2590
The buflib memory allocator is handle based and can free and compact, move or resize memory on demand. This allows to effeciently allocate memory dynamically without an MMU, by avoiding fragmentation through memory compaction. This patch adds the buflib library to the core, along with convinience wrappers to omit the context parameter. Compaction is not yet enabled, but will be in a later patch. Therefore, this acts as a replacement for buffer_alloc/buffer_get_buffer() with the benifit of a debug menu. See buflib.h for some API documentation. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30380 a1c6a512-1295-4272-9138-f99709370657
282 lines
8.8 KiB
C
282 lines
8.8 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 by Linus Nielsen Feltzing
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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 AUDIO_H
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#define AUDIO_H
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#include <stdbool.h>
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#include <string.h> /* size_t */
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#include "config.h"
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/* These must always be included with audio.h for this to compile under
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cetain conditions. Do it here or else spread the complication around to
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many files. */
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#if CONFIG_CODEC == SWCODEC
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#include "pcm_sampr.h"
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#include "pcm.h"
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#ifdef HAVE_RECORDING
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#include "enc_base.h"
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#endif /* HAVE_RECORDING */
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#endif /* CONFIG_CODEC == SWCODEC */
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#define AUDIO_STATUS_PLAY 0x0001
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#define AUDIO_STATUS_PAUSE 0x0002
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#define AUDIO_STATUS_RECORD 0x0004
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#define AUDIO_STATUS_PRERECORD 0x0008
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#define AUDIO_STATUS_ERROR 0x0010
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#define AUDIO_STATUS_WARNING 0x0020
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#define AUDIOERR_DISK_FULL 1
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#define AUDIO_GAIN_LINEIN 0
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#define AUDIO_GAIN_MIC 1
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void audio_init(void) INIT_ATTR;
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void audio_play(long offset);
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void audio_stop(void);
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/* Stops audio from serving playback and frees resources*/
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void audio_hard_stop(void);
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void audio_pause(void);
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void audio_resume(void);
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void audio_next(void);
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void audio_prev(void);
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int audio_status(void);
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size_t audio_buffer_available(void);
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void audio_ff_rewind(long newpos);
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void audio_flush_and_reload_tracks(void);
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struct mp3entry* audio_current_track(void);
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struct mp3entry* audio_next_track(void);
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bool audio_peek_track(struct mp3entry* id3, int offset);
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#ifdef HAVE_DISK_STORAGE
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void audio_set_buffer_margin(int setting);
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#endif
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void audio_error_clear(void);
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int audio_get_file_pos(void);
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void audio_beep(int duration);
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/* Required call when audio buffer is required for some other purpose */
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/* implemented in apps but called from firmware(!) */
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unsigned char *audio_get_buffer(bool talk_buf, size_t *buffer_size);
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#if CONFIG_CODEC == SWCODEC
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void audio_next_dir(void);
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void audio_prev_dir(void);
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#else /* hwcodec only */
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struct audio_debug
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{
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int audiobuflen;
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int audiobuf_write;
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int audiobuf_swapwrite;
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int audiobuf_read;
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int last_dma_chunk_size;
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bool dma_on;
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bool playing;
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bool play_pending;
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bool is_playing;
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bool filling;
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bool dma_underrun;
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int unplayed_space;
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int playable_space;
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int unswapped_space;
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int low_watermark_level;
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int lowest_watermark_level;
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};
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void audio_get_debugdata(struct audio_debug *dbgdata);
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/* unsigned int audio_error(void); - unused function */
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void audio_init_playback(void);
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#define audio_next_dir() ({ })
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#define audio_prev_dir() ({ })
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#endif
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/* channel modes */
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enum rec_channel_modes
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{
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__CHN_MODE_START_INDEX = -1,
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CHN_MODE_STEREO,
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CHN_MODE_MONO,
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CHN_NUM_MODES
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};
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#if CONFIG_CODEC == SWCODEC
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/* channel mode capability bits */
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#define CHN_CAP_STEREO (1 << CHN_MODE_STEREO)
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#define CHN_CAP_MONO (1 << CHN_MODE_MONO)
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#define CHN_CAP_ALL (CHN_CAP_STEREO | CHN_CAP_MONO)
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#endif /* CONFIG_CODEC == SWCODEC */
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/* the enums below must match prestr[] in recording.c */
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enum audio_sources
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{
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AUDIO_SRC_PLAYBACK = -1, /* Virtual source */
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HAVE_MIC_IN_(AUDIO_SRC_MIC,)
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HAVE_LINE_IN_(AUDIO_SRC_LINEIN,)
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HAVE_SPDIF_IN_(AUDIO_SRC_SPDIF,)
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HAVE_FMRADIO_IN_(AUDIO_SRC_FMRADIO,)
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AUDIO_NUM_SOURCES,
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AUDIO_SRC_MAX = AUDIO_NUM_SOURCES-1,
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AUDIO_SRC_DEFAULT = AUDIO_SRC_PLAYBACK
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};
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extern int audio_channels;
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extern int audio_output_source;
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#ifdef HAVE_RECORDING
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/* Recordable source implies it has the input as well */
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/* For now there's no restrictions on any targets with which inputs
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are recordable so define them as equivalent - if they do differ,
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special handling is needed right now. */
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enum rec_sources
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{
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__REC_SRC_FIRST = -1,
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HAVE_MIC_REC_(REC_SRC_MIC,)
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HAVE_LINE_REC_(REC_SRC_LINEIN,)
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HAVE_SPDIF_REC_(REC_SRC_SPDIF,)
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HAVE_FMRADIO_REC_(REC_SRC_FMRADIO,)
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REC_NUM_SOURCES
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};
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#endif /* HAVE_RECORDING */
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#if CONFIG_CODEC == SWCODEC
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/* selects a source to monitor for recording or playback */
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#define SRCF_PLAYBACK 0x0000 /* default */
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#define SRCF_RECORDING 0x1000
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#if CONFIG_TUNER
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/* for AUDIO_SRC_FMRADIO */
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#define SRCF_FMRADIO_PLAYING 0x0000 /* default */
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#define SRCF_FMRADIO_PAUSED 0x2000
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#endif
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#endif
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#ifdef HAVE_RECORDING
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/* parameters for audio_set_recording_options */
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struct audio_recording_options
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{
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int rec_source;
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int rec_frequency;
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int rec_channels;
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int rec_prerecord_time;
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#if CONFIG_CODEC == SWCODEC
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int rec_mono_mode;
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int rec_source_flags; /* for rec_set_source */
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struct encoder_config enc_config;
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#else
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int rec_quality;
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bool rec_editable;
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#endif
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};
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/* audio recording functions */
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void audio_init_recording(void);
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void audio_close_recording(void);
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void audio_record(const char *filename);
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void audio_stop_recording(void);
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void audio_pause_recording(void);
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void audio_resume_recording(void);
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void audio_new_file(const char *filename);
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void audio_set_recording_options(struct audio_recording_options *options);
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void audio_set_recording_gain(int left, int right, int type);
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unsigned long audio_recorded_time(void);
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unsigned long audio_num_recorded_bytes(void);
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#if CONFIG_CODEC == SWCODEC
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/* SWCODEC recording functions */
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/* playback.c */
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bool audio_load_encoder(int afmt);
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void audio_remove_encoder(void);
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unsigned char *audio_get_recording_buffer(size_t *buffer_size);
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#endif /* CONFIG_CODEC == SWCODEC */
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#endif /* HAVE_RECORDING */
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#if CONFIG_CODEC == SWCODEC
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/* SWCODEC misc. audio functions */
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#if INPUT_SRC_CAPS != 0
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/* audio.c */
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void audio_set_input_source(int source, unsigned flags);
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/* audio_input_mux: target-specific implementation used by audio_set_source
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to set hardware inputs and audio paths */
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void audio_input_mux(int source, unsigned flags);
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void audio_set_output_source(int source);
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#endif /* INPUT_SRC_CAPS */
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#endif /* CONFIG_CODEC == SWCODEC */
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#ifdef HAVE_SPDIF_IN
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/* returns index into rec_master_sampr_list */
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int audio_get_spdif_sample_rate(void);
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/* > 0: monitor EBUin, 0: Monitor IISrecv, <0: reset only */
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void audio_spdif_set_monitor(int monitor_spdif);
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#endif /* HAVE_SPDIF_IN */
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unsigned long audio_prev_elapsed(void);
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#if CONFIG_CODEC != SWCODEC
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/***********************************************************************/
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/* audio event handling */
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/* subscribe to one or more audio event(s) by OR'ing together the desired */
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/* event IDs (defined below); a handler is called with a solitary event ID */
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/* (so switch() is okay) and possibly some useful data (depending on the */
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/* event); a handler must return one of the return codes defined below */
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typedef int (*AUDIO_EVENT_HANDLER)(unsigned short event, unsigned long data);
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void audio_register_event_handler(AUDIO_EVENT_HANDLER handler, unsigned short mask);
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/***********************************************************************/
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/* handler return codes */
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#define AUDIO_EVENT_RC_IGNORED 200
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/* indicates that no action was taken or the event was not recognized */
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#define AUDIO_EVENT_RC_HANDLED 201
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/* indicates that the event was handled and some action was taken which renders
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the original event invalid; USE WITH CARE!; this return code aborts all further
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processing of the given event */
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/***********************************************************************/
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/* audio event IDs */
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#define AUDIO_EVENT_POS_REPORT (1<<0)
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/* sends a periodic song position report to handlers; a report is sent on
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each kernal tick; the number of ticks per second is defined by HZ; on each
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report the current song position is passed in 'data'; if a handler takes an
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action that changes the song or the song position it must return
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AUDIO_EVENT_RC_HANDLED which suppresses the event for any remaining handlers */
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#define AUDIO_EVENT_END_OF_TRACK (1<<1)
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/* generated when the end of the currently playing track is reached; no
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data is passed; if the handler implements some alternate end-of-track
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processing it should return AUDIO_EVENT_RC_HANDLED which suppresses the
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event for any remaining handlers as well as the normal end-of-track
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processing */
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#endif
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#endif
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