output/openal: convert to C++

1 files changed, 0 insertions, 279 deletions

diff --git a/src/output/openal_output_plugin.c b/src/output/openal_output_plugin.c
deleted file mode 100644
index ebd35ef12..000000000
--- a/src/output/openal_output_plugin.c
+++ /dev/null
@@ -1,279 +0,0 @@
-/*
- * Copyright (C) 2003-2011 The Music Player Daemon Project
- * http://www.musicpd.org
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program 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 General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include "config.h"
-#include "openal_output_plugin.h"
-#include "output_api.h"
-
-#include <glib.h>
-
-#ifndef HAVE_OSX
-#include <AL/al.h>
-#include <AL/alc.h>
-#else
-#include <OpenAL/al.h>
-#include <OpenAL/alc.h>
-#endif
-
-#undef G_LOG_DOMAIN
-#define G_LOG_DOMAIN "openal"
-
-/* should be enough for buffer size = 2048 */
-#define NUM_BUFFERS 16
-
-struct openal_data {
-	struct audio_output base;
-
-	const char *device_name;
-	ALCdevice *device;
-	ALCcontext *context;
-	ALuint buffers[NUM_BUFFERS];
-	unsigned filled;
-	ALuint source;
-	ALenum format;
-	ALuint frequency;
-};
-
-static inline GQuark
-openal_output_quark(void)
-{
-	return g_quark_from_static_string("openal_output");
-}
-
-static ALenum
-openal_audio_format(struct audio_format *audio_format)
-{
-	/* note: cannot map SAMPLE_FORMAT_S8 to AL_FORMAT_STEREO8 or
-	   AL_FORMAT_MONO8 since OpenAL expects unsigned 8 bit
-	   samples, while MPD uses signed samples */
-
-	switch (audio_format->format) {
-	case SAMPLE_FORMAT_S16:
-		if (audio_format->channels == 2)
-			return AL_FORMAT_STEREO16;
-		if (audio_format->channels == 1)
-			return AL_FORMAT_MONO16;
-
-		/* fall back to mono */
-		audio_format->channels = 1;
-		return openal_audio_format(audio_format);
-
-	default:
-		/* fall back to 16 bit */
-		audio_format->format = SAMPLE_FORMAT_S16;
-		return openal_audio_format(audio_format);
-	}
-}
-
-G_GNUC_PURE
-static inline ALint
-openal_get_source_i(const struct openal_data *od, ALenum param)
-{
-	ALint value;
-	alGetSourcei(od->source, param, &value);
-	return value;
-}
-
-G_GNUC_PURE
-static inline bool
-openal_has_processed(const struct openal_data *od)
-{
-	return openal_get_source_i(od, AL_BUFFERS_PROCESSED) > 0;
-}
-
-G_GNUC_PURE
-static inline ALint
-openal_is_playing(const struct openal_data *od)
-{
-	return openal_get_source_i(od, AL_SOURCE_STATE) == AL_PLAYING;
-}
-
-static bool
-openal_setup_context(struct openal_data *od,
-		     GError **error)
-{
-	od->device = alcOpenDevice(od->device_name);
-
-	if (od->device == NULL) {
-		g_set_error(error, openal_output_quark(), 0,
-			    "Error opening OpenAL device \"%s\"\n",
-			    od->device_name);
-		return false;
-	}
-
-	od->context = alcCreateContext(od->device, NULL);
-
-	if (od->context == NULL) {
-		g_set_error(error, openal_output_quark(), 0,
-			    "Error creating context for \"%s\"\n",
-			    od->device_name);
-		alcCloseDevice(od->device);
-		return false;
-	}
-
-	return true;
-}
-
-static struct audio_output *
-openal_init(const struct config_param *param, GError **error_r)
-{
-	const char *device_name = config_get_block_string(param, "device", NULL);
-	struct openal_data *od;
-
-	if (device_name == NULL) {
-		device_name = alcGetString(NULL, ALC_DEFAULT_DEVICE_SPECIFIER);
-	}
-
-	od = g_new(struct openal_data, 1);
-	if (!ao_base_init(&od->base, &openal_output_plugin, param, error_r)) {
-		g_free(od);
-		return NULL;
-	}
-
-	od->device_name = device_name;
-
-	return &od->base;
-}
-
-static void
-openal_finish(struct audio_output *ao)
-{
-	struct openal_data *od = (struct openal_data *)ao;
-
-	ao_base_finish(&od->base);
-	g_free(od);
-}
-
-static bool
-openal_open(struct audio_output *ao, struct audio_format *audio_format,
-	    GError **error)
-{
-	struct openal_data *od = (struct openal_data *)ao;
-
-	od->format = openal_audio_format(audio_format);
-
-	if (!openal_setup_context(od, error)) {
-		return false;
-	}
-
-	alcMakeContextCurrent(od->context);
-	alGenBuffers(NUM_BUFFERS, od->buffers);
-
-	if (alGetError() != AL_NO_ERROR) {
-		g_set_error(error, openal_output_quark(), 0,
-			    "Failed to generate buffers");
-		return false;
-	}
-
-	alGenSources(1, &od->source);
-
-	if (alGetError() != AL_NO_ERROR) {
-		g_set_error(error, openal_output_quark(), 0,
-			    "Failed to generate source");
-		alDeleteBuffers(NUM_BUFFERS, od->buffers);
-		return false;
-	}
-
-	od->filled = 0;
-	od->frequency = audio_format->sample_rate;
-
-	return true;
-}
-
-static void
-openal_close(struct audio_output *ao)
-{
-	struct openal_data *od = (struct openal_data *)ao;
-
-	alcMakeContextCurrent(od->context);
-	alDeleteSources(1, &od->source);
-	alDeleteBuffers(NUM_BUFFERS, od->buffers);
-	alcDestroyContext(od->context);
-	alcCloseDevice(od->device);
-}
-
-static unsigned
-openal_delay(struct audio_output *ao)
-{
-	struct openal_data *od = (struct openal_data *)ao;
-
-	return od->filled < NUM_BUFFERS || openal_has_processed(od)
-		? 0
-		/* we don't know exactly how long we must wait for the
-		   next buffer to finish, so this is a random
-		   guess: */
-		: 50;
-}
-
-static size_t
-openal_play(struct audio_output *ao, const void *chunk, size_t size,
-	    G_GNUC_UNUSED GError **error)
-{
-	struct openal_data *od = (struct openal_data *)ao;
-	ALuint buffer;
-
-	if (alcGetCurrentContext() != od->context) {
-		alcMakeContextCurrent(od->context);
-	}
-
-	if (od->filled < NUM_BUFFERS) {
-		/* fill all buffers */
-		buffer = od->buffers[od->filled];
-		od->filled++;
-	} else {
-		/* wait for processed buffer */
-		while (!openal_has_processed(od))
-			g_usleep(10);
-
-		alSourceUnqueueBuffers(od->source, 1, &buffer);
-	}
-
-	alBufferData(buffer, od->format, chunk, size, od->frequency);
-	alSourceQueueBuffers(od->source, 1, &buffer);
-
-	if (!openal_is_playing(od))
-		alSourcePlay(od->source);
-
-	return size;
-}
-
-static void
-openal_cancel(struct audio_output *ao)
-{
-	struct openal_data *od = (struct openal_data *)ao;
-
-	od->filled = 0;
-	alcMakeContextCurrent(od->context);
-	alSourceStop(od->source);
-
-	/* force-unqueue all buffers */
-	alSourcei(od->source, AL_BUFFER, 0);
-	od->filled = 0;
-}
-
-const struct audio_output_plugin openal_output_plugin = {
-	.name = "openal",
-	.init = openal_init,
-	.finish = openal_finish,
-	.open = openal_open,
-	.close = openal_close,
-	.delay = openal_delay,
-	.play = openal_play,
-	.cancel = openal_cancel,
-};