d2c1ece304
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31184 a1c6a512-1295-4272-9138-f99709370657
108 lines
3.5 KiB
C
108 lines
3.5 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 PCM_PLAYBACK_H
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#define PCM_PLAYBACK_H
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#include <string.h> /* size_t */
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#define DMA_REC_ERROR_DMA (-1)
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#ifdef HAVE_SPDIF_REC
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#define DMA_REC_ERROR_SPDIF (-2)
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#endif
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/** RAW PCM routines used with playback and recording **/
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/* Typedef for registered callbacks */
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typedef void (*pcm_play_callback_type)(unsigned char **start,
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size_t *size);
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typedef void (*pcm_rec_callback_type)(int status, void **start, size_t *size);
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/* set the pcm frequency - use values in hw_sampr_list
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* when CONFIG_SAMPR_TYPES is #defined, or-in SAMPR_TYPE_* fields with
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* frequency value. SAMPR_TYPE_PLAY is 0 and the default if none is
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* specified. */
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#ifdef CONFIG_SAMPR_TYPES
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#ifdef SAMPR_TYPE_REC
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unsigned int pcm_sampr_type_rec_to_play(unsigned int samplerate);
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#endif
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#endif /* CONFIG_SAMPR_TYPES */
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void pcm_set_frequency(unsigned int samplerate);
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/* apply settings to hardware immediately */
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void pcm_apply_settings(void);
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/** RAW PCM playback routines **/
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/* Reenterable locks for locking and unlocking the playback interrupt */
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void pcm_play_lock(void);
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void pcm_play_unlock(void);
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void pcm_init(void) INIT_ATTR;
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void pcm_postinit(void);
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bool pcm_is_initialized(void);
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/* This is for playing "raw" PCM data */
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void pcm_play_data(pcm_play_callback_type get_more,
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unsigned char* start, size_t size);
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void pcm_calculate_peaks(int *left, int *right);
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const void* pcm_get_peak_buffer(int* count);
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size_t pcm_get_bytes_waiting(void);
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void pcm_play_stop(void);
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void pcm_play_pause(bool play);
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bool pcm_is_paused(void);
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bool pcm_is_playing(void);
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void pcm_play_set_dma_started_callback(void (* callback)(void));
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#ifdef HAVE_RECORDING
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/** RAW PCM recording routines **/
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/* Reenterable locks for locking and unlocking the recording interrupt */
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void pcm_rec_lock(void);
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void pcm_rec_unlock(void);
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/* Initialize pcm recording interface */
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void pcm_init_recording(void);
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/* Uninitialize pcm recording interface */
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void pcm_close_recording(void);
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/* Start recording "raw" PCM data */
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void pcm_record_data(pcm_rec_callback_type more_ready,
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void *start, size_t size);
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/* Stop tranferring data into supplied buffer */
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void pcm_stop_recording(void);
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/* Is pcm currently recording? */
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bool pcm_is_recording(void);
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/* Called by bottom layer ISR when transfer is complete. Returns non-zero
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* size if successful. Setting start to NULL forces stop. */
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void pcm_rec_more_ready_callback(int status, void **start, size_t *size);
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void pcm_calculate_rec_peaks(int *left, int *right);
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#endif /* HAVE_RECORDING */
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#endif /* PCM_PLAYBACK_H */
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