code.delx.au - pulseaudio/blob - src/pulsecore/play-memchunk.c

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2004-2008 Lennart Poettering
   5
   6   PulseAudio is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU Lesser General Public License as published
   8   by the Free Software Foundation; either version 2.1 of the License,
   9   or (at your option) any later version.
  10
  11   PulseAudio is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with PulseAudio; if not, write to the Free Software
  18   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  19   USA.
  20 ***/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <stdlib.h>
  27 #include <stdio.h>
  28 #include <string.h>
  29
  30 #include <pulse/xmalloc.h>
  31 #include <pulse/gccmacro.h>
  32
  33 #include <pulsecore/sink-input.h>
  34 #include <pulsecore/thread-mq.h>
  35 #include <pulsecore/play-memblockq.h>
  36
  37 #include "play-memchunk.h"
  38
  39 int pa_play_memchunk(
  40         pa_sink *sink,
  41         const pa_sample_spec *ss,
  42         const pa_channel_map *map,
  43         const pa_memchunk *chunk,
  44         pa_cvolume *volume,
  45         pa_proplist *p,
  46         pa_sink_input_flags_t flags,
  47         uint32_t *sink_input_index) {
  48
  49     pa_memblockq *q;
  50     int r;
  51     pa_memchunk silence;
  52
  53     pa_assert(sink);
  54     pa_assert(ss);
  55     pa_assert(chunk);
  56
  57     pa_silence_memchunk_get(&sink->core->silence_cache, sink->core->mempool, &silence, ss, 0);
  58     q = pa_memblockq_new(0, chunk->length, 0, pa_frame_size(ss), 1, 1, 0, &silence);
  59     pa_memblock_unref(silence.memblock);
  60
  61     pa_assert_se(pa_memblockq_push(q, chunk) >= 0);
  62
  63     if ((r = pa_play_memblockq(sink, ss, map, q, volume, p, flags, sink_input_index)) < 0) {
  64         pa_memblockq_free(q);
  65         return r;
  66     }
  67
  68     return 0;
  69 }