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| author | Miika Pekkarinen <miipekk@ihme.org> | 2005-06-26 19:41:29 +0000 |
|---|---|---|
| committer | Miika Pekkarinen <miipekk@ihme.org> | 2005-06-26 19:41:29 +0000 |
| commit | d8cb703b1e86c9f910211a976d8bed0c7a99379a (patch) | |
| tree | 6db3b698d83e639974bd6603225ff11891652113 /apps/dsp.h | |
| parent | 316eb6538e2fc88efa93248deb761679071409f1 (diff) | |
Initial DSP implementation. DSP supports resampling audio stream from
codecs (currently works corrently only with mp3's, somebody should fix
that).
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6877 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'apps/dsp.h')
| -rw-r--r-- | apps/dsp.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/apps/dsp.h b/apps/dsp.h new file mode 100644 index 0000000000..65cd837c1e --- /dev/null +++ b/apps/dsp.h @@ -0,0 +1,48 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id$ + * + * Copyright (C) 2005 Miika Pekkarinen + * + * All files in this archive are subject to the GNU General Public License. + * See the file COPYING in the source tree root for full license agreement. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ****************************************************************************/ + +#ifndef _DSP_H +#define _DSP_H + +#include <stdlib.h> +#include <ctype.h> +#include <stdbool.h> + +#define NATIVE_FREQUENCY 44100 +#define STEREO_INTERLEAVED 0 +#define STEREO_NONINTERLEAVED 1 +/* Not supported yet. */ +#define STEREO_MONO 2 + +struct dsp_configuration { + long frequency; + long clip_min, clip_max; + int sample_depth; + bool dither_enabled; + int stereo_mode; +}; + +extern struct dsp_configuration dsp_config; + +int dsp_process(char *dest, char *src, int samplecount); +bool dsp_configure(int setting, void *value); + +#endif + + |