2012-03-27 23:52:15 +00:00
|
|
|
/***************************************************************************
|
|
|
|
|
* __________ __ ___.
|
|
|
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
|
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
|
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
|
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
|
|
|
* \/ \/ \/ \/ \/
|
|
|
|
|
* $Id$
|
|
|
|
|
*
|
|
|
|
|
* Copyright (C) 2012 Michael Sevakis
|
|
|
|
|
*
|
|
|
|
|
* 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 DSP_SAMPLE_IO_H
|
|
|
|
|
#define DSP_SAMPLE_IO_H
|
|
|
|
|
|
|
|
|
|
/* 16-bit samples are scaled based on these constants. The shift should be
|
|
|
|
|
* no more than 15.
|
|
|
|
|
*/
|
|
|
|
|
#define WORD_SHIFT 12
|
|
|
|
|
#define WORD_FRACBITS 27
|
|
|
|
|
#define NATIVE_DEPTH 16
|
|
|
|
|
|
|
|
|
|
struct sample_io_data;
|
|
|
|
|
|
|
|
|
|
/* DSP initial buffer input function call prototype */
|
|
|
|
|
typedef void (*sample_input_fn_type)(struct sample_io_data *this,
|
|
|
|
|
struct dsp_buffer **buf_p);
|
|
|
|
|
|
|
|
|
|
/* DSP final buffer output function call prototype */
|
|
|
|
|
typedef void (*sample_output_fn_type)(struct sample_io_data *this,
|
|
|
|
|
struct dsp_buffer *src,
|
|
|
|
|
struct dsp_buffer *dst);
|
|
|
|
|
|
|
|
|
|
/* This becomes part of the DSP aggregate */
|
|
|
|
|
struct sample_io_data
|
|
|
|
|
{
|
|
|
|
|
int outcount; /* 00h: Output count */
|
|
|
|
|
struct sample_format format; /* General format info */
|
|
|
|
|
int sample_depth; /* Codec-specified sample depth */
|
|
|
|
|
int stereo_mode; /* Codec-specified input format */
|
|
|
|
|
sample_input_fn_type input_samples[2]; /* input functions */
|
|
|
|
|
struct dsp_buffer sample_buf; /* Buffer descriptor for converted samples */
|
2012-05-05 02:00:44 +00:00
|
|
|
int32_t *sample_buf_arr[2]; /* Internal format buffer pointers */
|
2012-03-27 23:52:15 +00:00
|
|
|
sample_output_fn_type output_samples[2]; /* Final output functions */
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/* Sample IO watches the format setting from the codec */
|
|
|
|
|
void dsp_sample_io_configure(struct sample_io_data *this,
|
|
|
|
|
unsigned int setting,
|
|
|
|
|
intptr_t value);
|
|
|
|
|
|
|
|
|
|
#endif /* DSP_SAMPLE_IO_H */
|
