--- /dev/null
+/***
+ This file is part of PulseAudio.
+
+ Copyright 2004-2008 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 2.1 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 <errno.h>
+#include <unistd.h>
+
+#include <asoundlib.h>
+#include <pulse/rtclock.h>
+#include <pulse/timeval.h>
+#include <pulse/xmalloc.h>
+
+#include <pulsecore/i18n.h>
+#include <pulsecore/macro.h>
+#include <pulsecore/sink.h>
+#include <pulsecore/module.h>
+#include <pulsecore/core-util.h>
+#include <pulsecore/modargs.h>
+#include <pulsecore/log.h>
+#include <pulsecore/thread.h>
+#include <pulsecore/thread-mq.h>
+#include <pulsecore/rtpoll.h>
+#include <pulsecore/shared.h>
+
+#include "tizen-audio.h"
+#include "module-tizenaudio-sink-symdef.h"
+
+
+PA_MODULE_AUTHOR("Tizen");
+PA_MODULE_DESCRIPTION("TizenAudio sink");
+PA_MODULE_VERSION(PACKAGE_VERSION);
+PA_MODULE_LOAD_ONCE(false);
+PA_MODULE_USAGE(
+ "sink_name=<name of sink> "
+ "sink_properties=<properties for the sink> "
+ "format=<sample format> "
+ "rate=<sample rate> "
+ "channels=<number of channels> "
+ "channel_map=<channel map>");
+
+#define DEFAULT_SINK_NAME "tizenaudio"
+#define BLOCK_USEC (PA_USEC_PER_SEC * 0.032)
+
+struct userdata {
+ pa_core *core;
+ pa_module *module;
+ pa_sink *sink;
+
+ pa_thread *thread;
+ pa_thread_mq thread_mq;
+ pa_rtpoll *rtpoll;
+
+ snd_pcm_t *pcm_handle;
+
+ pa_usec_t block_usec;
+ pa_usec_t timestamp;
+
+ char* device_name;
+ bool first, after_rewind;
+
+ uint64_t write_count;
+ uint64_t since_start;
+};
+
+static const char* const valid_modargs[] = {
+ "sink_name",
+ "sink_properties",
+ "format",
+ "rate",
+ "channels",
+ "channel_map",
+ NULL
+};
+
+/* Called from IO context */
+static int suspend(struct userdata *u) {
+ void *audio_data = pa_shared_get(u->core, "tizen-audio-data");
+ audio_interface_t *audio_intf = pa_shared_get(u->core, "tizen-audio-interface");
+
+ pa_assert(u);
+ pa_assert(u->pcm_handle);
+
+ /* Let's suspend -- we don't call snd_pcm_drain() here since that might
+ * take awfully long with our long buffer sizes today. */
+ if (audio_intf && audio_intf->pcm_close) {
+ audio_intf->pcm_close(audio_data, u->pcm_handle);
+ u->pcm_handle = NULL;
+ }
+ pa_log_info("Device suspended...[%s]", u->device_name);
+
+ return 0;
+}
+
+/* Called from IO context */
+static int unsuspend(struct userdata *u) {
+ pa_sample_spec sample_spec;
+ void *audio_data = pa_shared_get(u->core, "tizen-audio-data");
+ audio_interface_t *audio_intf = pa_shared_get(u->core, "tizen-audio-interface");
+
+ pa_assert(u);
+ pa_assert(!u->pcm_handle);
+
+ pa_log_info("Trying resume...");
+
+ if (audio_intf && audio_intf->pcm_open) {
+ audio_return_t audio_ret = AUDIO_RET_OK;
+ if (AUDIO_IS_ERROR((audio_ret = audio_intf->pcm_open(audio_data, (void **)&u->pcm_handle, &sample_spec, AUDIO_DIRECTION_OUT)))) {
+ pa_log("Error opening PCM device %x", audio_ret);
+ goto fail;
+ }
+ }
+ if(sample_spec.rate != u->sink->sample_spec.rate) {
+ pa_log_warn("Couldn't restore original sample settings.");
+ }
+ pa_log_info("Trying sw param...");
+
+ u->write_count = 0;
+ u->first = true;
+ u->since_start = 0;
+
+ pa_log_info("Resumed successfully...");
+
+ return 0;
+
+fail:
+ if (u->pcm_handle) {
+ if (audio_intf && audio_intf->pcm_close)
+ audio_intf->pcm_close(audio_data, u->pcm_handle);
+
+ u->pcm_handle = NULL;
+ }
+ return -PA_ERR_IO;
+}
+
+static int sink_process_msg(
+ pa_msgobject *o,
+ int code,
+ void *data,
+ int64_t offset,
+ pa_memchunk *chunk) {
+
+ struct userdata *u = PA_SINK(o)->userdata;
+ int r;
+
+ switch (code) {
+ case PA_SINK_MESSAGE_SET_STATE:
+ switch ((pa_sink_state_t) PA_PTR_TO_UINT(data)) {
+ case PA_SINK_SUSPENDED: {
+ pa_assert(PA_SINK_IS_OPENED(u->sink->thread_info.state));
+ if ((r = suspend(u)) < 0)
+ return r;
+
+ break;
+ }
+
+ case PA_SINK_IDLE:
+ case PA_SINK_RUNNING: {
+ u->timestamp = pa_rtclock_now();
+ if (u->sink->thread_info.state == PA_SINK_SUSPENDED) {
+ if ((r = unsuspend(u)) < 0)
+ return r;
+ }
+ break;
+ }
+
+ case PA_SINK_UNLINKED:
+ case PA_SINK_INIT:
+ case PA_SINK_INVALID_STATE:
+ break;
+ }
+ break;
+
+ case PA_SINK_MESSAGE_GET_LATENCY: {
+ pa_usec_t now;
+
+ now = pa_rtclock_now();
+ *((pa_usec_t*) data) = u->timestamp > now ? u->timestamp - now : 0ULL;
+
+ return 0;
+ }
+ }
+
+ return pa_sink_process_msg(o, code, data, offset, chunk);
+}
+
+static void sink_update_requested_latency_cb(pa_sink *s) {
+ struct userdata *u;
+ size_t nbytes;
+
+ pa_sink_assert_ref(s);
+ pa_assert_se(u = s->userdata);
+
+ u->block_usec = pa_sink_get_requested_latency_within_thread(s);
+
+ if (u->block_usec == (pa_usec_t) -1)
+ u->block_usec = s->thread_info.max_latency;
+
+ nbytes = pa_usec_to_bytes(u->block_usec, &s->sample_spec);
+ pa_sink_set_max_rewind_within_thread(s, nbytes);
+ pa_sink_set_max_request_within_thread(s, nbytes);
+}
+
+static void process_rewind(struct userdata *u, pa_usec_t now) {
+ size_t rewind_nbytes, in_buffer;
+ pa_usec_t delay;
+
+ pa_assert(u);
+
+ rewind_nbytes = u->sink->thread_info.rewind_nbytes;
+
+ if (!PA_SINK_IS_OPENED(u->sink->thread_info.state) || rewind_nbytes <= 0)
+ goto do_nothing;
+
+ pa_log_debug("Requested to rewind %lu bytes.", (unsigned long) rewind_nbytes);
+
+ if (u->timestamp <= now)
+ goto do_nothing;
+
+ delay = u->timestamp - now;
+ in_buffer = pa_usec_to_bytes(delay, &u->sink->sample_spec);
+
+ if (in_buffer <= 0)
+ goto do_nothing;
+
+ if (rewind_nbytes > in_buffer)
+ rewind_nbytes = in_buffer;
+
+ pa_sink_process_rewind(u->sink, rewind_nbytes);
+ u->timestamp -= pa_bytes_to_usec(rewind_nbytes, &u->sink->sample_spec);
+
+ pa_log_debug("Rewound %lu bytes.", (unsigned long) rewind_nbytes);
+ return;
+
+do_nothing:
+
+ pa_sink_process_rewind(u->sink, 0);
+}
+
+static void process_render(struct userdata *u, pa_usec_t now) {
+ size_t ate = 0;
+ void *p;
+ snd_pcm_sframes_t frames_to_write;
+ size_t frame_size;
+ audio_interface_t *audio_intf = pa_shared_get(u->core, "tizen-audio-interface");
+
+ pa_assert(u);
+
+ /* This is the configured latency. Sink inputs connected to us
+ might not have a single frame more than the maxrequest value
+ queued. Hence: at maximum read this many bytes from the sink
+ inputs. */
+
+ /* Fill the buffer up the latency size */
+ while (u->timestamp < now + u->block_usec) {
+ pa_memchunk chunk;
+
+ audio_intf->pcm_avail(u->pcm_handle);
+ frame_size = pa_frame_size(&u->sink->sample_spec);
+ frames_to_write = u->sink->thread_info.max_request / frame_size;
+
+ pa_sink_render_full(u->sink, frames_to_write * frame_size, &chunk);
+ p = pa_memblock_acquire(chunk.memblock);
+
+ audio_intf->pcm_write(u->pcm_handle,(const uint8_t*) p + chunk.index, (snd_pcm_uframes_t) frames_to_write);
+
+ pa_memblock_release(chunk.memblock);
+ pa_memblock_unref(chunk.memblock);
+ u->timestamp += pa_bytes_to_usec(chunk.length, &u->sink->sample_spec);
+
+ ate += chunk.length;
+ if (ate >= u->sink->thread_info.max_request) {
+ break;
+ }
+ }
+}
+
+static void thread_func(void *userdata) {
+ struct userdata *u = userdata;
+
+ pa_assert(u);
+ pa_log_debug("Thread starting up");
+ pa_thread_mq_install(&u->thread_mq);
+ u->timestamp = pa_rtclock_now();
+
+ for (;;) {
+ pa_usec_t now = 0;
+ int ret;
+
+ if (PA_SINK_IS_OPENED(u->sink->thread_info.state))
+ now = pa_rtclock_now();
+
+ if (PA_UNLIKELY(u->sink->thread_info.rewind_requested))
+ process_rewind(u, now);
+
+ /* Render some data and drop it immediately */
+ if (PA_SINK_IS_OPENED(u->sink->thread_info.state)) {
+ if (u->timestamp <= now) {
+ process_render(u, now);
+ }
+ pa_rtpoll_set_timer_absolute(u->rtpoll, u->timestamp);
+ } else
+ pa_rtpoll_set_timer_disabled(u->rtpoll);
+
+ /* Hmm, nothing to do. Let's sleep */
+ if ((ret = pa_rtpoll_run(u->rtpoll, true)) < 0)
+ goto fail;
+
+ if (ret == 0)
+ goto finish;
+ }
+
+fail:
+ /* If this was no regular exit from the loop we have to continue
+ * processing messages until we received PA_MESSAGE_SHUTDOWN */
+ pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
+ pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
+
+finish:
+ pa_log_debug("Thread shutting down");
+}
+
+int pa__init(pa_module*m) {
+ struct userdata *u = NULL;
+ pa_sample_spec ss;
+ pa_channel_map map;
+ pa_modargs *ma = NULL;
+ pa_sink_new_data data;
+ size_t nbytes;
+ uint32_t alternate_sample_rate;
+
+ pa_assert(m);
+
+ if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
+ pa_log("Failed to parse module arguments.");
+ goto fail;
+ }
+
+ ss = m->core->default_sample_spec;
+ map = m->core->default_channel_map;
+ if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_DEFAULT) < 0) {
+ pa_log("Invalid sample format specification or channel map");
+ goto fail;
+ }
+
+ alternate_sample_rate = m->core->alternate_sample_rate;
+ if (pa_modargs_get_alternate_sample_rate(ma, &alternate_sample_rate) < 0) {
+ pa_log("Failed to parse alternate sample rate");
+ goto fail;
+ }
+
+ m->userdata = u = pa_xnew0(struct userdata, 1);
+ u->core = m->core;
+ u->module = m;
+ u->rtpoll = pa_rtpoll_new();
+ pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll);
+
+ pa_sink_new_data_init(&data);
+ data.driver = __FILE__;
+ data.module = m;
+ pa_sink_new_data_set_name(&data, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME));
+ pa_sink_new_data_set_sample_spec(&data, &ss);
+ pa_sink_new_data_set_channel_map(&data, &map);
+ pa_proplist_sets(data.proplist, PA_PROP_DEVICE_DESCRIPTION, _("Null Output"));
+ pa_proplist_sets(data.proplist, PA_PROP_DEVICE_CLASS, "abstract");
+
+ if (pa_modargs_get_proplist(ma, "sink_properties", data.proplist, PA_UPDATE_REPLACE) < 0) {
+ pa_log("Invalid properties");
+ pa_sink_new_data_done(&data);
+ goto fail;
+ }
+
+ u->sink = pa_sink_new(m->core, &data, PA_SINK_LATENCY);
+ pa_sink_new_data_done(&data);
+
+ if (!u->sink) {
+ pa_log("Failed to create sink object.");
+ goto fail;
+ }
+
+ u->sink->parent.process_msg = sink_process_msg;
+ u->sink->update_requested_latency = sink_update_requested_latency_cb;
+ u->sink->userdata = u;
+
+ pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
+ pa_sink_set_rtpoll(u->sink, u->rtpoll);
+
+ unsuspend (u);
+
+ u->block_usec = BLOCK_USEC;
+ nbytes = pa_usec_to_bytes(u->block_usec, &u->sink->sample_spec);
+ pa_sink_set_max_rewind(u->sink, 0);
+ pa_sink_set_max_request(u->sink, nbytes);
+
+ if (!(u->thread = pa_thread_new("null-sink", thread_func, u))) {
+ pa_log("Failed to create thread.");
+ goto fail;
+ }
+ pa_sink_set_fixed_latency(u->sink, 32000);
+ pa_sink_put(u->sink);
+ pa_modargs_free(ma);
+
+ return 0;
+
+fail:
+ if (ma)
+ pa_modargs_free(ma);
+
+ pa__done(m);
+ return -1;
+}
+
+int pa__get_n_used(pa_module *m) {
+ struct userdata *u;
+
+ pa_assert(m);
+ pa_assert_se(u = m->userdata);
+
+ return pa_sink_linked_by(u->sink);
+}
+
+void pa__done(pa_module*m) {
+ struct userdata *u;
+
+ pa_assert(m);
+
+ if (!(u = m->userdata))
+ return;
+
+ if (u->sink)
+ pa_sink_unlink(u->sink);
+
+ if (u->thread) {
+ pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
+ pa_thread_free(u->thread);
+ }
+
+ pa_thread_mq_done(&u->thread_mq);
+
+ if (u->sink)
+ pa_sink_unref(u->sink);
+
+ if (u->rtpoll)
+ pa_rtpoll_free(u->rtpoll);
+
+ pa_xfree(u);
+}
projects / platform / upstream / pulseaudio.git / commitdiff