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https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
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dfd440bd5d
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@171 fefdeb5f-60dc-0310-8127-8f9354f1896f
104 lines
2.6 KiB
C
104 lines
2.6 KiB
C
/* $Id$ */
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/***
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This file is part of polypaudio.
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polypaudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published
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by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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polypaudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with polypaudio; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdlib.h>
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#include <assert.h>
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#include <stdio.h>
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#include <string.h>
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#include "play-memchunk.h"
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#include "sink-input.h"
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#include "xmalloc.h"
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static void sink_input_kill(struct pa_sink_input *i) {
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struct pa_memchunk *c;
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assert(i && i->userdata);
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c = i->userdata;
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pa_memblock_unref(c->memblock);
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pa_xfree(c);
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pa_sink_input_free(i);
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}
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static int sink_input_peek(struct pa_sink_input *i, struct pa_memchunk *chunk) {
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struct pa_memchunk *c;
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assert(i && chunk && i->userdata);
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c = i->userdata;
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if (c->length <= 0)
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return -1;
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assert(c->memblock && c->memblock->length);
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*chunk = *c;
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pa_memblock_ref(c->memblock);
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return 0;
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}
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static void si_kill(struct pa_mainloop_api *m, void *i) {
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sink_input_kill(i);
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}
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static void sink_input_drop(struct pa_sink_input *i, const struct pa_memchunk*chunk, size_t length) {
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struct pa_memchunk *c;
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assert(i && length && i->userdata);
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c = i->userdata;
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assert(!memcmp(chunk, c, sizeof(chunk)));
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assert(length <= c->length);
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c->length -= length;
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c->index += length;
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if (c->length <= 0)
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pa_mainloop_api_once(i->sink->core->mainloop, si_kill, i);
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}
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int pa_play_memchunk(struct pa_sink *sink, const char *name, const struct pa_sample_spec *ss, const struct pa_memchunk *chunk, pa_volume_t volume) {
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struct pa_sink_input *si;
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struct pa_memchunk *nchunk;
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assert(sink && chunk);
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if (volume <= 0)
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return 0;
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if (!(si = pa_sink_input_new(sink, name, ss)))
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return -1;
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si->volume = volume;
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si->peek = sink_input_peek;
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si->drop = sink_input_drop;
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si->kill = sink_input_kill;
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si->userdata = nchunk = pa_xmalloc(sizeof(struct pa_memchunk));
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*nchunk = *chunk;
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pa_memblock_ref(chunk->memblock);
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pa_sink_notify(sink);
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return 0;
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}
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