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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2005 by Linus Nielsen Feltzing
*
* 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 PCM_PLAYBACK_H
#define PCM_PLAYBACK_H
#include <string.h> /* size_t */
#include <inttypes.h> /* uint32_t */
#include "config.h"
enum pcm_dma_status
{
#ifdef HAVE_SPDIF_REC
PCM_DMAST_ERR_SPDIF = -2,
#endif
PCM_DMAST_ERR_DMA = -1,
PCM_DMAST_OK = 0,
PCM_DMAST_STARTED = 1,
};
/** RAW PCM routines used with playback and recording **/
/* Typedef for registered data callback */
typedef void (*pcm_play_callback_type)(const void **start, size_t *size);
/* Typedef for registered status callback */
typedef enum pcm_dma_status (*pcm_status_callback_type)(enum pcm_dma_status status);
/* set the pcm frequency - use values in hw_sampr_list
* when CONFIG_SAMPR_TYPES is #defined, or-in SAMPR_TYPE_* fields with
* frequency value. SAMPR_TYPE_PLAY is 0 and the default if none is
* specified. */
#ifdef CONFIG_SAMPR_TYPES
#ifdef SAMPR_TYPE_REC
unsigned int pcm_sampr_type_rec_to_play(unsigned int samplerate);
#endif
#endif /* CONFIG_SAMPR_TYPES */
/* set next frequency to be used */
void pcm_set_frequency(unsigned int samplerate);
/* return last-set frequency */
unsigned int pcm_get_frequency(void);
/* apply settings to hardware immediately */
void pcm_apply_settings(void);
/** RAW PCM playback routines **/
/* Reenterable locks for locking and unlocking the playback interrupt */
void pcm_play_lock(void);
void pcm_play_unlock(void);
void pcm_init(void) INIT_ATTR;
void pcm_postinit(void);
bool pcm_is_initialized(void);
/* This is for playing "raw" PCM data */
void pcm_play_data(pcm_play_callback_type get_more,
pcm_status_callback_type status_cb,
const void *start, size_t size);
/* Kept internally for global PCM and used by mixer's verion of peak
calculation */
struct pcm_peaks
{
uint32_t left; /* Left peak value */
uint32_t right; /* Right peak value */
long period; /* For tracking calling period */
long tick; /* Last tick called */
};
void pcm_calculate_peaks(int *left, int *right);
const void* pcm_get_peak_buffer(int* count);
size_t pcm_get_bytes_waiting(void);
void pcm_play_stop(void);
void pcm_play_pause(bool play);
bool pcm_is_paused(void);
bool pcm_is_playing(void);
#ifdef HAVE_RECORDING
/** RAW PCM recording routines **/
/* Typedef for registered data callback */
typedef void (*pcm_rec_callback_type)(void **start, size_t *size);
/* Reenterable locks for locking and unlocking the recording interrupt */
void pcm_rec_lock(void);
void pcm_rec_unlock(void);
/* Initialize pcm recording interface */
void pcm_init_recording(void);
/* Uninitialize pcm recording interface */
void pcm_close_recording(void);
/* Start recording "raw" PCM data */
void pcm_record_data(pcm_rec_callback_type more_ready,
pcm_status_callback_type status_cb,
void *start, size_t size);
/* Stop tranferring data into supplied buffer */
void pcm_stop_recording(void);
/* Is pcm currently recording? */
bool pcm_is_recording(void);
void pcm_calculate_rec_peaks(int *left, int *right);
#endif /* HAVE_RECORDING */
#endif /* PCM_PLAYBACK_H */
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