apps/dsp.h

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2005 Miika Pekkarinen
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21
  22 #ifndef _DSP_H
  23 #define _DSP_H
  24
  25 #include <stdlib.h>
  26 #include <stdbool.h>
  27
  28 #define NATIVE_FREQUENCY       44100
  29 enum
  30 {
  31     STEREO_INTERLEAVED = 0,
  32     STEREO_NONINTERLEAVED,
  33     STEREO_MONO,
  34     STEREO_NUM_MODES,
  35 };
  36
  37 enum
  38 {
  39     CODEC_IDX_AUDIO = 0,
  40     CODEC_IDX_VOICE,
  41 };
  42
  43 enum
  44 {
  45     DSP_MYDSP = 1,
  46     DSP_SET_FREQUENCY,
  47     DSP_SWITCH_FREQUENCY,
  48     DSP_SET_SAMPLE_DEPTH,
  49     DSP_SET_STEREO_MODE,
  50     DSP_RESET,
  51     DSP_FLUSH,
  52     DSP_SET_TRACK_GAIN,
  53     DSP_SET_ALBUM_GAIN,
  54     DSP_SET_TRACK_PEAK,
  55     DSP_SET_ALBUM_PEAK,
  56     DSP_CROSSFEED
  57 };
  58
  59 enum {
  60     DSP_CALLBACK_SET_PRESCALE = 0,
  61     DSP_CALLBACK_SET_BASS,
  62     DSP_CALLBACK_SET_TREBLE,
  63     DSP_CALLBACK_SET_CHANNEL_CONFIG,
  64     DSP_CALLBACK_SET_STEREO_WIDTH
  65 };
  66
  67 struct dsp_config;
  68
  69 int dsp_process(struct dsp_config *dsp, char *dest,
  70                 const char *src[], int count);
  71 int dsp_input_count(struct dsp_config *dsp, int count);
  72 int dsp_output_count(struct dsp_config *dsp, int count);
  73 intptr_t dsp_configure(struct dsp_config *dsp, int setting,
  74                        intptr_t value);
  75 void dsp_set_replaygain(void);
  76 void dsp_set_crossfeed(bool enable);
  77 void dsp_set_crossfeed_direct_gain(int gain);
  78 void dsp_set_crossfeed_cross_params(long lf_gain, long hf_gain,
  79                                     long cutoff);
  80 void dsp_set_eq(bool enable);
  81 void dsp_set_eq_precut(int precut);
  82 void dsp_set_eq_coefs(int band);
  83 void dsp_dither_enable(bool enable);
  84 void dsp_timestretch_enable(bool enable);
  85 bool dsp_timestretch_available(void);
  86 void sound_set_pitch(int r);
  87 int sound_get_pitch(void);
  88 void dsp_set_timestretch(int percent);
  89 int dsp_get_timestretch(void);
  90 int dsp_callback(int msg, intptr_t param);
  91
  92 #endif