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/* $Id$ */
/***
This file is part of PulseAudio.
Copyright 2004-2006 Lennart Poettering
PulseAudio 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.
PulseAudio 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 PulseAudio; 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 <stdio.h>
#include <string.h>
#include <pulse/xmalloc.h>
#include <pulsecore/sink-input.h>
#include <pulsecore/gccmacro.h>
#include <pulsecore/thread-mq.h>
#include "play-memchunk.h"
typedef struct memchunk_stream {
pa_msgobject parent;
pa_core *core;
pa_sink_input *sink_input;
pa_memchunk memchunk;
} memchunk_stream;
enum {
MEMCHUNK_STREAM_MESSAGE_UNLINK,
};
PA_DECLARE_CLASS(memchunk_stream);
#define MEMCHUNK_STREAM(o) (memchunk_stream_cast(o))
static PA_DEFINE_CHECK_TYPE(memchunk_stream, pa_msgobject);
static void memchunk_stream_unlink(memchunk_stream *u) {
pa_assert(u);
if (!u->sink_input)
return;
pa_sink_input_unlink(u->sink_input);
pa_sink_input_unref(u->sink_input);
u->sink_input = NULL;
memchunk_stream_unref(u);
}
static void memchunk_stream_free(pa_object *o) {
memchunk_stream *u = MEMCHUNK_STREAM(o);
pa_assert(u);
memchunk_stream_unlink(u);
if (u->memchunk.memblock)
pa_memblock_unref(u->memchunk.memblock);
pa_xfree(u);
}
static int memchunk_stream_process_msg(pa_msgobject *o, int code, void*userdata, int64_t offset, pa_memchunk *chunk) {
memchunk_stream *u = MEMCHUNK_STREAM(o);
memchunk_stream_assert_ref(u);
switch (code) {
case MEMCHUNK_STREAM_MESSAGE_UNLINK:
memchunk_stream_unlink(u);
break;
}
return 0;
}
static void sink_input_kill_cb(pa_sink_input *i) {
pa_sink_input_assert_ref(i);
memchunk_stream_unlink(MEMCHUNK_STREAM(i->userdata));
}
static int sink_input_peek_cb(pa_sink_input *i, size_t length, pa_memchunk *chunk) {
memchunk_stream *u;
pa_assert(i);
pa_assert(chunk);
u = MEMCHUNK_STREAM(i->userdata);
memchunk_stream_assert_ref(u);
if (!u->memchunk.memblock)
return -1;
if (u->memchunk.length <= 0) {
pa_memblock_unref(u->memchunk.memblock);
u->memchunk.memblock = NULL;
pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(u), MEMCHUNK_STREAM_MESSAGE_UNLINK, NULL, 0, NULL, NULL);
return -1;
}
pa_assert(u->memchunk.memblock);
*chunk = u->memchunk;
pa_memblock_ref(chunk->memblock);
return 0;
}
static void sink_input_drop_cb(pa_sink_input *i, size_t length) {
memchunk_stream *u;
pa_assert(i);
pa_assert(length > 0);
u = MEMCHUNK_STREAM(i->userdata);
memchunk_stream_assert_ref(u);
if (length < u->memchunk.length) {
u->memchunk.length -= length;
u->memchunk.index += length;
} else
u->memchunk.length = 0;
}
int pa_play_memchunk(
pa_sink *sink,
const char *name,
const pa_sample_spec *ss,
const pa_channel_map *map,
const pa_memchunk *chunk,
pa_cvolume *volume) {
memchunk_stream *u = NULL;
pa_sink_input_new_data data;
pa_assert(sink);
pa_assert(ss);
pa_assert(chunk);
if (volume && pa_cvolume_is_muted(volume))
return 0;
pa_memchunk_will_need(chunk);
u = pa_msgobject_new(memchunk_stream);
u->parent.parent.free = memchunk_stream_free;
u->parent.process_msg = memchunk_stream_process_msg;
u->core = sink->core;
u->memchunk = *chunk;
pa_memblock_ref(u->memchunk.memblock);
pa_sink_input_new_data_init(&data);
data.sink = sink;
data.driver = __FILE__;
data.name = name;
pa_sink_input_new_data_set_sample_spec(&data, ss);
pa_sink_input_new_data_set_channel_map(&data, map);
pa_sink_input_new_data_set_volume(&data, volume);
if (!(u->sink_input = pa_sink_input_new(sink->core, &data, 0)))
goto fail;
u->sink_input->peek = sink_input_peek_cb;
u->sink_input->drop = sink_input_drop_cb;
u->sink_input->kill = sink_input_kill_cb;
u->sink_input->userdata = u;
pa_sink_input_put(u->sink_input);
/* The reference to u is dangling here, because we want to keep
* this stream around until it is fully played. */
return 0;
fail:
if (u)
memchunk_stream_unref(u);
return -1;
}
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