code.delx.au - pulseaudio/blob - src/pulsecore/sample-util.h

   1 #ifndef foosampleutilhfoo
   2 #define foosampleutilhfoo
   3
   4 /* $Id$ */
   5
   6 /***
   7   This file is part of PulseAudio.
   8
   9   PulseAudio is free software; you can redistribute it and/or modify
  10   it under the terms of the GNU Lesser General Public License as published
  11   by the Free Software Foundation; either version 2 of the License,
  12   or (at your option) any later version.
  13
  14   PulseAudio is distributed in the hope that it will be useful, but
  15   WITHOUT ANY WARRANTY; without even the implied warranty of
  16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17   General Public License for more details.
  18
  19   You should have received a copy of the GNU Lesser General Public License
  20   along with PulseAudio; if not, write to the Free Software
  21   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  22   USA.
  23 ***/
  24
  25 #include <pulse/sample.h>
  26 #include <pulse/volume.h>
  27 #include <pulsecore/memblock.h>
  28 #include <pulsecore/memchunk.h>
  29
  30 pa_memblock *pa_silence_memblock(pa_memblock* b, const pa_sample_spec *spec);
  31 pa_memblock *pa_silence_memblock_new(pa_mempool *pool, const pa_sample_spec *spec, size_t length);
  32 void pa_silence_memchunk(pa_memchunk *c, const pa_sample_spec *spec);
  33 void pa_silence_memory(void *p, size_t length, const pa_sample_spec *spec);
  34
  35 typedef struct pa_mix_info {
  36     pa_memchunk chunk;
  37     pa_cvolume volume;
  38     void *userdata;
  39     void *internal; /* Used internally by pa_mix(), should not be initialised when calling pa_mix() */
  40 } pa_mix_info;
  41
  42 size_t pa_mix(
  43     pa_mix_info channels[],
  44     unsigned nchannels,
  45     void *data,
  46     size_t length,
  47     const pa_sample_spec *spec,
  48     const pa_cvolume *volume,
  49     int mute);
  50
  51 void pa_volume_memchunk(
  52     pa_memchunk*c,
  53     const pa_sample_spec *spec,
  54     const pa_cvolume *volume);
  55
  56 #endif