/***
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
#endif
#include <stdlib.h>
-#include <assert.h>
#include <stdio.h>
#include <string.h>
#include <pulsecore/sink-input.h>
#include <pulsecore/gccmacro.h>
+#include <pulsecore/thread-mq.h>
#include "play-memchunk.h"
-static void sink_input_kill(pa_sink_input *i) {
- pa_memchunk *c;
- assert(i && i->userdata);
- c = i->userdata;
+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_sink_input_disconnect(i);
- pa_sink_input_unref(i);
+PA_DECLARE_CLASS(memchunk_stream);
+#define MEMCHUNK_STREAM(o) (memchunk_stream_cast(o))
+static PA_DEFINE_CHECK_TYPE(memchunk_stream, pa_msgobject);
- pa_memblock_unref(c->memblock);
- pa_xfree(c);
+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 int sink_input_peek(pa_sink_input *i, pa_memchunk *chunk) {
- pa_memchunk *c;
- assert(i && chunk && i->userdata);
- c = i->userdata;
+static void memchunk_stream_free(pa_object *o) {
+ memchunk_stream *u = MEMCHUNK_STREAM(o);
+ pa_assert(u);
- if (c->length <= 0)
- return -1;
-
- assert(c->memblock && c->memblock->length);
- *chunk = *c;
- pa_memblock_ref(c->memblock);
+ 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 si_kill(PA_GCC_UNUSED pa_mainloop_api *m, void *i) {
- sink_input_kill(i);
+static void sink_input_kill_cb(pa_sink_input *i) {
+ pa_sink_input_assert_ref(i);
+
+ memchunk_stream_unlink(MEMCHUNK_STREAM(i->userdata));
}
-static void sink_input_drop(pa_sink_input *i, const pa_memchunk*chunk, size_t length) {
- pa_memchunk *c;
- assert(i && length && i->userdata);
- c = i->userdata;
+static int sink_input_peek_cb(pa_sink_input *i, size_t length, pa_memchunk *chunk) {
+ memchunk_stream *u;
- assert(!memcmp(chunk, c, sizeof(chunk)));
- assert(length <= c->length);
+ pa_assert(i);
+ pa_assert(chunk);
+ u = MEMCHUNK_STREAM(i->userdata);
+ memchunk_stream_assert_ref(u);
- c->length -= length;
- c->index += length;
+ if (!u->memchunk.memblock)
+ return -1;
- if (c->length <= 0)
- pa_mainloop_api_once(i->sink->core->mainloop, si_kill, i);
+ 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(
const pa_channel_map *map,
const pa_memchunk *chunk,
pa_cvolume *volume) {
-
- pa_sink_input *si;
- pa_memchunk *nchunk;
+
+ memchunk_stream *u = NULL;
pa_sink_input_new_data data;
- assert(sink);
- assert(ss);
- assert(chunk);
+ 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.name = name;
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 (!(si = pa_sink_input_new(sink->core, &data, 0)))
- return -1;
- si->peek = sink_input_peek;
- si->drop = sink_input_drop;
- si->kill = sink_input_kill;
-
- si->userdata = nchunk = pa_xnew(pa_memchunk, 1);
- *nchunk = *chunk;
-
- pa_memblock_ref(chunk->memblock);
+ 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. */
- pa_sink_notify(si->sink);
-
return 0;
+
+fail:
+ if (u)
+ memchunk_stream_unref(u);
+
+ return -1;
}
+