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engines/ultima/ultima8/audio/audio_channel.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "ultima/ultima8/misc/common_types.h"
+#include "ultima/ultima8/audio/audio_channel.h"
+#include "ultima/ultima8/audio/audio_process.h"
+#include "ultima/ultima8/audio/audio_sample.h"
+#include "common/memstream.h"
+#include "audio/audiostream.h"
+#include "audio/decoders/raw.h"
+
+namespace Ultima {
+namespace Ultima8 {
+
+
+AudioChannel::AudioChannel(Audio::Mixer *mixer, uint32 sampleRate, bool stereo) :
+		_mixer(mixer), _priority(0) {
+}
+
+AudioChannel::~AudioChannel(void) {
+}
+
+void AudioChannel::playSample(AudioSample *sample, int loop, int priority, bool isSpeech, uint32 pitchShift, byte volume, int8 balance) {
+	if (!sample)
+		return;
+
+	_priority = priority;
+
+	// Create the _sample
+	Audio::SeekableAudioStream *audioStream = sample->makeStream();
+
+	int loops = loop;
+	if (loop == -1) {
+		// loop forever
+		loops = 0;
+	}
+	Audio::AudioStream *stream = (loop <= 1 && loop != -1) ?
+		(Audio::AudioStream *)audioStream :
+		new Audio::LoopingAudioStream(audioStream, loops);
+
+	_mixer->stopHandle(_soundHandle);
+	_mixer->playStream(isSpeech ? Audio::Mixer::kSpeechSoundType : Audio::Mixer::kSFXSoundType, &_soundHandle, stream, -1, volume, balance);
+	if (pitchShift != AudioProcess::PITCH_SHIFT_NONE)
+		_mixer->setChannelRate(_soundHandle, stream->getRate() * pitchShift / AudioProcess::PITCH_SHIFT_NONE);
+}
+
+bool AudioChannel::isPlaying() {
+	return _mixer->isSoundHandleActive(_soundHandle);
+}
+
+void AudioChannel::stop() {
+	_mixer->stopHandle(_soundHandle);
+}
+
+void AudioChannel::setPaused(bool paused) {
+	_mixer->pauseHandle(_soundHandle, paused);
+}
+
+} // End of namespace Ultima8
+} // End of namespace Ultima