SecBSD's official ports repository

games/godot/files/sndio/audio_driver_sndio.cpp

@@ -0,0 +1,140 @@
+/*************************************************************************/
+/*  audio_driver_sndio.cpp                                               */
+/*************************************************************************/
+/* Copyright (c) 2020 Omar Polo.                                         */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "audio_driver_sndio.h"
+
+#ifdef SNDIO_ENABLED
+
+#include "core/os/os.h"
+#include "core/project_settings.h"
+
+Error AudioDriverSndio::init() {
+	active = false;
+	thread_exited = false;
+	exit_thread = false;
+	speaker_mode = SPEAKER_MODE_STEREO;
+
+	handle = sio_open(SIO_DEVANY, SIO_PLAY, 0);
+	ERR_FAIL_COND_V(handle == NULL, ERR_CANT_OPEN);
+
+	struct sio_par par;
+	sio_initpar(&par);
+
+	par.bits = 32;
+	par.bps = 4;
+	par.rate = GLOBAL_GET("audio/mix_rate");
+	par.appbufsz = 50 * par.rate / 1000;
+
+	if (!sio_setpar(handle, &par)) {
+		return ERR_CANT_OPEN;
+	}
+
+	if (!sio_getpar(handle, &par)) {
+		return ERR_CANT_OPEN;
+	}
+
+	if (par.bits != 32 || par.bps != 4 || par.le != SIO_LE_NATIVE) {
+		return ERR_CANT_OPEN;
+	}
+
+	if (!sio_start(handle)) {
+		return ERR_CANT_OPEN;
+	}
+
+	mix_rate = par.rate;
+	channels = par.pchan;
+	period_size = par.appbufsz;
+
+	samples.resize(period_size * channels);
+
+	thread.start(AudioDriverSndio::thread_func, this);
+
+	return OK;
+}
+
+void AudioDriverSndio::thread_func(void *p_udata) {
+	AudioDriverSndio *ad = (AudioDriverSndio*)p_udata;
+
+	for (size_t i = 0; i < ad->period_size * ad->channels; ++i)
+		ad->samples.write[i] = 0;
+
+	while (!ad->exit_thread) {
+		ad->lock();
+		ad->start_counting_ticks();
+
+		if (ad->active) {
+			ad->audio_server_process(ad->period_size, ad->samples.ptrw());
+		}
+
+		ad->stop_counting_ticks();
+		ad->unlock();
+
+		size_t bytes = ad->period_size * ad->channels * sizeof(int32_t);
+		if (sio_write(ad->handle, ad->samples.ptr(), bytes) != bytes) {
+			ERR_PRINT("sndio: fatal error");
+			ad->exit_thread = true;
+		}
+	}
+
+	ad->thread_exited = true;
+}
+
+void AudioDriverSndio::start() {
+	active = true;
+}
+
+int AudioDriverSndio::get_mix_rate() const {
+	return mix_rate;
+}
+
+AudioDriver::SpeakerMode AudioDriverSndio::get_speaker_mode() const {
+	return speaker_mode;
+}
+
+void AudioDriverSndio::lock() {
+	mutex.lock();
+}
+
+void AudioDriverSndio::unlock() {
+	mutex.unlock();
+}
+
+void AudioDriverSndio::finish() {
+	exit_thread = true;
+	thread.wait_to_finish();
+
+	if (handle) {
+		sio_close(handle);
+		handle = NULL;
+	}
+}
+
+AudioDriverSndio::AudioDriverSndio() {
+}
+
+AudioDriverSndio::~AudioDriverSndio() {
+}
+
+#endif