--- /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, see <http://www.gnu.org/licenses/>.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include <unistd.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 <SLES/OpenSLES.h>
+
+#include "module-sles-sink-symdef.h"
+
+#ifdef USE_ANDROID_SIMPLE_BUFFER_QUEUE
+#define DATALOCATOR_BUFFERQUEUE SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE
+#define IID_BUFFERQUEUE SL_IID_ANDROIDSIMPLEBUFFERQUEUE
+#define BufferQueueItf SLAndroidSimpleBufferQueueItf
+#define BufferQueueState SLAndroidSimpleBufferQueueState
+#define IID_BUFFERQUEUE_USED SL_IID_ANDROIDSIMPLEBUFFERQUEUE
+#define INDEX index
+#else
+#define DATALOCATOR_BUFFERQUEUE SL_DATALOCATOR_BUFFERQUEUE
+#define IID_BUFFERQUEUE SL_IID_BUFFERQUEUE
+#define BufferQueueItf SLBufferQueueItf
+#define BufferQueueState SLBufferQueueState
+#define IID_BUFFERQUEUE_USED IID_BUFFERQUEUE
+#define INDEX playIndex
+#endif
+
+#define checkResult(r) do { \
+ if ((r) != SL_RESULT_SUCCESS) { \
+ if ((r) == SL_RESULT_PARAMETER_INVALID) fprintf(stderr, "error SL_RESULT_PARAMETER_INVALID at %s:%d\n", __FILE__, __LINE__); \
+ else if ((r) == SL_RESULT_PRECONDITIONS_VIOLATED ) fprintf(stderr, "error SL_RESULT_PRECONDITIONS_VIOLATED at %s:%d\n", __FILE__, __LINE__); \
+ else fprintf(stderr, "error %d at %s:%d\n", (int) r, __FILE__, __LINE__); \
+ } \
+ } while (0)
+typedef struct {
+ short left;
+ short right;
+} frame_t;
+
+PA_MODULE_AUTHOR("Lennart Poettering, Nathan Martynov");
+PA_MODULE_DESCRIPTION("Android OpenSL ES sink");
+PA_MODULE_VERSION(PACKAGE_VERSION);
+PA_MODULE_LOAD_ONCE(false);
+PA_MODULE_USAGE(
+ "sink_name=<name for the sink> "
+ "sink_properties=<properties for the sink> ");
+
+#define DEFAULT_SINK_NAME "OpenSL ES sink"
+#define BLOCK_USEC (PA_USEC_PER_SEC * 2)
+
+struct userdata {
+ pa_core *core;
+ pa_module *module;
+ pa_sink *sink;
+
+ pa_thread *thread;
+ pa_thread_mq thread_mq;
+ pa_rtpoll *rtpoll;
+
+ pa_usec_t block_usec;
+ pa_usec_t timestamp;
+
+ pa_memchunk memchunk;
+
+ SLObjectItf engineObject;
+ SLEngineItf engineEngine;
+
+ // output mix interfaces
+ SLObjectItf outputMixObject;
+
+ // buffer queue player interfaces
+ SLObjectItf bqPlayerObject;
+ SLPlayItf bqPlayerPlay;
+ BufferQueueItf bqPlayerBufferQueue;
+};
+
+static const char* const valid_modargs[] = {
+ "sink_name",
+ "sink_properties",
+ NULL
+};
+
+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;
+
+ switch (code) {
+ case PA_SINK_MESSAGE_SET_STATE:
+
+ if (pa_sink_get_state(u->sink) == PA_SINK_SUSPENDED || pa_sink_get_state(u->sink) == PA_SINK_INIT) {
+ if (PA_PTR_TO_UINT(data) == PA_SINK_RUNNING || PA_PTR_TO_UINT(data) == PA_SINK_IDLE)
+ u->timestamp = pa_rtclock_now();
+ }
+
+ 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);
+}
+
+void pa_init_sles_player(struct userdata *s)
+{
+ if (s == NULL) return;
+ SLresult result;
+
+ // create engine
+ result = slCreateEngine(&(s->engineObject), 0, NULL, 0, NULL, NULL); checkResult(result);
+ result = (*s->engineObject)->Realize(s->engineObject, SL_BOOLEAN_FALSE); checkResult(result);
+
+ result = (*s->engineObject)->GetInterface(s->engineObject, SL_IID_ENGINE, &(s->engineEngine)); checkResult(result);
+
+ // create output mix
+ result = (*s->engineEngine)->CreateOutputMix(s->engineEngine, &(s->outputMixObject), 0, NULL, NULL); checkResult(result);
+ result = (*s->outputMixObject)->Realize(s->outputMixObject, SL_BOOLEAN_FALSE); checkResult(result);
+
+ // create audio player
+
+ SLDataLocator_OutputMix locator_outputmix;
+ locator_outputmix.locatorType = SL_DATALOCATOR_OUTPUTMIX;
+ locator_outputmix.outputMix = s->outputMixObject;
+
+ SLDataLocator_BufferQueue locator_bufferqueue;
+ locator_bufferqueue.locatorType = DATALOCATOR_BUFFERQUEUE;
+ locator_bufferqueue.numBuffers = 50;
+
+ SLDataFormat_PCM pcm;
+ pcm.formatType = SL_DATAFORMAT_PCM;
+ pcm.numChannels = 2;
+ pcm.samplesPerSec = SL_SAMPLINGRATE_32;
+ pcm.bitsPerSample = SL_PCMSAMPLEFORMAT_FIXED_16;
+ pcm.containerSize = 16;
+ pcm.channelMask = SL_SPEAKER_FRONT_LEFT | SL_SPEAKER_FRONT_RIGHT;
+ pcm.endianness = SL_BYTEORDER_LITTLEENDIAN;
+
+ SLDataSource audiosrc;
+ audiosrc.pLocator = &locator_bufferqueue;
+ audiosrc.pFormat = &pcm;
+
+ SLDataSink audiosnk;
+ audiosnk.pLocator = &locator_outputmix;
+ audiosnk.pFormat = NULL;
+
+ SLInterfaceID ids[1] = {IID_BUFFERQUEUE};
+ SLboolean flags[1] = {SL_BOOLEAN_TRUE};
+ result = (*s->engineEngine)->CreateAudioPlayer(s->engineEngine, &s->bqPlayerObject, &audiosrc, &audiosnk, 1, ids, flags); checkResult(result);
+ result = (*s->bqPlayerObject)->Realize(s->bqPlayerObject, SL_BOOLEAN_FALSE); checkResult(result);
+
+ result = (*s->bqPlayerObject)->GetInterface(s->bqPlayerObject, SL_IID_PLAY, &s->bqPlayerPlay); checkResult(result);
+ result = (*s->bqPlayerObject)->GetInterface(s->bqPlayerObject, IID_BUFFERQUEUE_USED, &s->bqPlayerBufferQueue); checkResult(result);
+
+ result = (*s->bqPlayerPlay)->SetPlayState(s->bqPlayerPlay, SL_PLAYSTATE_PLAYING); checkResult(result);
+}
+
+void pa_destroy_sles_player(struct userdata *s){
+ if (s == NULL) return;
+ (*s->bqPlayerPlay)->SetPlayState(s->bqPlayerPlay, SL_PLAYSTATE_STOPPED);
+ (*s->bqPlayerObject)->Destroy(s->bqPlayerObject);
+ (*s->outputMixObject)->Destroy(s->outputMixObject);
+ (*s->engineObject)->Destroy(s->engineObject);
+}
+
+static void process_render(struct userdata *u, pa_usec_t now) {
+ size_t ate = 0;
+
+ 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) {
+ void *p;
+
+ pa_sink_render(u->sink, u->sink->thread_info.max_request, &u->memchunk);
+ p = pa_memblock_acquire(u->memchunk.memblock);
+ (*u->bqPlayerBufferQueue)->Enqueue(u->bqPlayerBufferQueue, (uint8_t*) p + u->memchunk.index, u->memchunk.length);
+ pa_memblock_release(u->memchunk.memblock);
+
+/* pa_log_debug("Ate %lu bytes.", (unsigned long) chunk.length); */
+ u->timestamp += pa_bytes_to_usec(u->memchunk.length, &u->sink->sample_spec);
+
+ ate += u->memchunk.length;
+
+ if (ate >= u->sink->thread_info.max_request)
+ break;
+ }
+
+/* pa_log_debug("Ate in sum %lu bytes (of %lu)", (unsigned long) ate, (unsigned long) nbytes); */
+}
+
+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))
+ pa_sink_process_rewind(u->sink, 0);
+
+ /* 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)) < 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;
+
+ pa_assert(m);
+
+ if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
+ pa_log("Failed to parse module arguments.");
+ goto fail;
+ }
+
+ // High rate causes glitches on some devices, this is needed to prevent it
+ ss.rate = 32000;
+ ss.channels = 2;
+ ss.format = PA_SAMPLE_S16LE;
+ map = m->core->default_channel_map;
+
+
+ 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_init_sles_player(u);
+ int buff[2] = {0, 0};
+ (*u->bqPlayerBufferQueue)->Enqueue(u->bqPlayerBufferQueue, buff, 1);
+
+ 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_DYNAMIC_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);
+
+ u->block_usec = BLOCK_USEC;
+ nbytes = pa_usec_to_bytes(u->block_usec, &u->sink->sample_spec);
+ pa_sink_set_max_rewind(u->sink, nbytes);
+ 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_latency_range(u->sink, 0, BLOCK_USEC);
+
+ 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);
+}
~mdw / termux-packages / commitdiff