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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/>.
*
*/
#ifndef AUDIO_DECODERS_UTIL_H
#define AUDIO_DECODERS_UTIL_H
#include "common/types.h"
#include "common/util.h"
namespace Audio {
// Convert one float sample into a int16 sample
static inline int16 floatToInt16(float src) {
return (int16) CLIP<int>((int) floor(src + 0.5), -32768, 32767);
}
// Convert planar float samples into interleaved int16 samples
static inline void floatToInt16Interleave(int16 *dst, const float **src,
uint32 length, uint8 channels) {
if (channels == 2) {
for (uint32 i = 0; i < length; i++) {
dst[2 * i ] = floatToInt16(src[0][i]);
dst[2 * i + 1] = floatToInt16(src[1][i]);
}
} else {
for (uint8 c = 0; c < channels; c++)
for (uint32 i = 0, j = c; i < length; i++, j += channels)
dst[j] = floatToInt16(src[c][i]);
}
}
} // End of namespace Audio
#endif // AUDIO_DECODERS_UTIL_H
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