1 files changed, 116 insertions, 0 deletions
diff --git a/engines/gob/sound/sounddesc.cpp b/engines/gob/sound/sounddesc.cpp
new file mode 100644
index 0000000000..e0885d9faa
--- /dev/null
+++ b/engines/gob/sound/sounddesc.cpp
@@ -0,0 +1,116 @@
+/* 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 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.
+ *
+ * $URL$
+ * $Id$
+ *
+ */
+
+#include "common/util.h"
+
+#include "gob/sound/sounddesc.h"
+
+namespace Gob {
+
+SoundDesc::SoundDesc() {
+	_data = _dataPtr = 0;
+	_size = 0;
+
+	_type = SOUND_SND;
+	_source = SOUND_FILE;
+
+	_repCount = 0;
+	_frequency = 0;
+	_flag = 0;
+	_id = 0;
+}
+
+SoundDesc::~SoundDesc() {
+	free();
+}
+
+void SoundDesc::set(SoundType type, SoundSource src,
+		byte *data, uint32 dSize) {
+
+	free();
+
+	_type = type;
+	_source = src;
+	_data = _dataPtr = data;
+	_size = dSize;
+}
+
+void SoundDesc::load(SoundType type, SoundSource src,
+		byte *data, uint32 dSize) {
+
+	free();
+
+	_source = src;
+	switch (type) {
+	case SOUND_ADL:
+		loadADL(data, dSize);
+		break;
+	case SOUND_SND:
+		loadSND(data, dSize);
+		break;
+	}
+}
+
+void SoundDesc::free() {
+	if (_source != SOUND_TOT)
+		delete[] _data;
+	_data = _dataPtr = 0;
+	_id = 0;
+}
+
+void SoundDesc::convToSigned() {
+	if ((_type == SOUND_SND) && _data && _dataPtr)
+		for (uint32 i = 0; i < _size; i++)
+			_dataPtr[i] ^= 0x80;
+}
+
+int16 SoundDesc::calcFadeOutLength(int16 frequency) {
+	return (10 * (_size / 2)) / frequency;
+}
+
+uint32 SoundDesc::calcLength(int16 repCount, int16 frequency, bool fade) {
+	uint32 fadeSize = fade ? _size / 2 : 0;
+	return ((_size * repCount - fadeSize) * 1000) / frequency;
+}
+
+void SoundDesc::loadSND(byte *data, uint32 dSize) {
+	assert(dSize > 6);
+
+	_type = SOUND_SND;
+	_data = data;
+	_dataPtr = data + 6;
+	_frequency = MAX((int16) READ_BE_UINT16(data + 4), (int16) 4700);
+	_flag = data[0] ? (data[0] & 0x7F) : 8;
+	data[0] = 0;
+	_size = MIN(READ_BE_UINT32(data), dSize - 6);
+}
+
+void SoundDesc::loadADL(byte *data, uint32 dSize) {
+	_type = SOUND_ADL;
+	_data = _dataPtr = data;
+	_size = dSize;
+}
+
+} // End of namespace Gob