0f5cb94aa4
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11452 a1c6a512-1295-4272-9138-f99709370657
241 lines
7.7 KiB
C
241 lines
7.7 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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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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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 <sys/types.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_playback.h"
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#ifdef HAVE_RECORDING
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#include "pcm_record.h"
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#include "id3.h"
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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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#ifdef SIMULATOR
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#define audio_play(x) sim_audio_play(x)
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#endif
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#define AUDIO_STATUS_PLAY 1
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#define AUDIO_STATUS_PAUSE 2
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#define AUDIO_STATUS_RECORD 4
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#define AUDIO_STATUS_PRERECORD 8
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#define AUDIO_STATUS_ERROR 16
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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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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_init(void);
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void audio_play(long offset);
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void audio_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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#if CONFIG_CODEC == SWCODEC
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int audio_track_count(void); /* SWCODEC only */
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long audio_filebufused(void); /* SWCODEC only */
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void audio_pre_ff_rewind(void); /* SWCODEC only */
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#endif /* CONFIG_CODEC == SWCODEC */
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void audio_ff_rewind(long newtime);
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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_has_changed_track(void);
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void audio_get_debugdata(struct audio_debug *dbgdata);
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void audio_set_crossfade(int type);
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void audio_set_buffer_margin(int seconds);
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unsigned int audio_error(void);
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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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void audio_init_playback(void);
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unsigned char *audio_get_buffer(bool talk_buf, size_t *buffer_size);
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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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/* audio sources */
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enum audio_sources
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{
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AUDIO_SRC_PLAYBACK = -1, /* for audio playback (default) */
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AUDIO_SRC_MIC, /* monitor mic */
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AUDIO_SRC_LINEIN, /* monitor line in */
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#ifdef HAVE_SPDIF_IN
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AUDIO_SRC_SPDIF, /* monitor spdif */
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#endif
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#if defined(HAVE_FMRADIO_IN) || defined(CONFIG_TUNER)
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AUDIO_SRC_FMRADIO, /* monitor fm radio */
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#endif
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/* define new audio sources above this line */
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AUDIO_SOURCE_LIST_END,
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/* AUDIO_SRC_FMRADIO must be declared #ifdef CONFIG_TUNER but is not in
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the list of recordable sources. HAVE_FMRADIO_IN implies CONFIG_TUNER. */
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#if defined(HAVE_FMRADIO_IN) || !defined(CONFIG_TUNER)
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AUDIO_NUM_SOURCES = AUDIO_SOURCE_LIST_END,
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#else
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AUDIO_NUM_SOURCES = AUDIO_SOURCE_LIST_END-1,
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#endif
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AUDIO_SRC_MAX = AUDIO_NUM_SOURCES-1
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};
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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_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(unsigned int buffer_offset);
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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 recoring 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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#ifdef HAVE_SPDIF_IN
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#ifdef HAVE_SPDIF_POWER
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void audio_set_spdif_power_setting(bool on);
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bool audio_get_spdif_power_setting(void);
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#endif
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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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/***********************************************************************/
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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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