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  * All files in this archive are subject to the GNU General Public License.
  13  * See the file COPYING in the source tree root for full license agreement.
  14  *
  15  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  16  * KIND, either express or implied.
  17  *
  18  ****************************************************************************/
  19
  20 #ifndef _DSP_H
  21 #define _DSP_H
  22
  23 #include <stdlib.h>
  24 #include <stdbool.h>
  25
  26 #define NATIVE_FREQUENCY       44100
  27 #define STEREO_INTERLEAVED     0
  28 #define STEREO_NONINTERLEAVED  1
  29 #define STEREO_MONO            2
  30
  31 enum {
  32     CODEC_SET_FILEBUF_WATERMARK = 1,
  33     CODEC_SET_FILEBUF_CHUNKSIZE,
  34     CODEC_SET_FILEBUF_PRESEEK,
  35     DSP_SET_FREQUENCY,
  36     DSP_SWITCH_FREQUENCY,
  37     DSP_SET_CLIP_MIN,
  38     DSP_SET_CLIP_MAX,
  39     DSP_SET_SAMPLE_DEPTH,
  40     DSP_SET_STEREO_MODE,
  41     DSP_RESET,
  42     DSP_SET_TRACK_GAIN,
  43     DSP_SET_ALBUM_GAIN,
  44     DSP_SET_TRACK_PEAK,
  45     DSP_SET_ALBUM_PEAK,
  46     DSP_CROSSFEED
  47 };
  48
  49 long dsp_process(char *dest, const char *src[], long size);
  50 long dsp_input_size(long size);
  51 long dsp_output_size(long size);
  52 int dsp_stereo_mode(void);
  53 bool dsp_configure(int setting, void *value);
  54 void dsp_set_replaygain(bool always);
  55 void dsp_set_crossfeed(bool enable);
  56 void dsp_set_crossfeed_direct_gain(int gain);
  57 void dsp_set_crossfeed_cross_params(long lf_gain, long hf_gain, long cutoff);
  58 void dsp_set_eq(bool enable);
  59 void dsp_set_eq_precut(int precut);
  60 void dsp_set_eq_coefs(int band);
  61 void sound_set_pitch(int r);
  62 int sound_get_pitch(void);
  63 void channels_set(int value);
  64 void stereo_width_set(int value);
  65 void dsp_dither_enable(bool enable);
  66
  67 #endif