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/* $Id$ */
/***
This file is part of polypaudio.
polypaudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
polypaudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with polypaudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <assert.h>
#include <stdio.h>
#include <string.h>
#include "play-memchunk.h"
#include "sink-input.h"
#include "xmalloc.h"
#define PA_TYPEID_MEMCHUNK PA_TYPEID_MAKE('M', 'C', 'N', 'K')
static void sink_input_kill(struct pa_sink_input *i) {
struct pa_memchunk *c;
assert(i && i->userdata);
c = i->userdata;
pa_sink_input_disconnect(i);
pa_sink_input_unref(i);
pa_memblock_unref(c->memblock);
pa_xfree(c);
}
static int sink_input_peek(struct pa_sink_input *i, struct pa_memchunk *chunk) {
struct pa_memchunk *c;
assert(i && chunk && i->userdata);
c = i->userdata;
if (c->length <= 0)
return -1;
assert(c->memblock && c->memblock->length);
*chunk = *c;
pa_memblock_ref(c->memblock);
return 0;
}
static void si_kill(struct pa_mainloop_api *m, void *i) {
sink_input_kill(i);
}
static void sink_input_drop(struct pa_sink_input *i, const struct pa_memchunk*chunk, size_t length) {
struct pa_memchunk *c;
assert(i && length && i->userdata);
c = i->userdata;
assert(!memcmp(chunk, c, sizeof(chunk)));
assert(length <= c->length);
c->length -= length;
c->index += length;
if (c->length <= 0)
pa_mainloop_api_once(i->sink->core->mainloop, si_kill, i);
}
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) {
struct pa_sink_input *si;
struct pa_memchunk *nchunk;
assert(sink && chunk);
if (volume <= 0)
return 0;
if (!(si = pa_sink_input_new(sink, PA_TYPEID_MEMCHUNK, name, ss, 0, -1)))
return -1;
si->volume = volume;
si->peek = sink_input_peek;
si->drop = sink_input_drop;
si->kill = sink_input_kill;
si->userdata = nchunk = pa_xmalloc(sizeof(struct pa_memchunk));
*nchunk = *chunk;
pa_memblock_ref(chunk->memblock);
pa_sink_notify(sink);
return 0;
}
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