45 lines
2.0 KiB
C
45 lines
2.0 KiB
C
/* Copyright (C) 2010-2023 The RetroArch team
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*
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* ---------------------------------------------------------------------------------------
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* The following license statement only applies to this file (mono_to_stereo.c).
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* ---------------------------------------------------------------------------------------
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*
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* Permission is hereby granted, free of charge,
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* to any person obtaining a copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <stdint.h>
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#include <stddef.h>
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#include <audio/conversion/dual_mono.h>
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/* TODO: Use SIMD instructions to make this faster (or show that it's not needed) */
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void convert_to_mono_float_left(float *out, const float *in, size_t frames)
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{
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unsigned i = 0;
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if (!out || !in || !frames)
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return;
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for (; i < frames; i++)
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{
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out[i] = in[i * 2];
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}
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}
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/* Why is there no equivalent for int16_t samples?
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* No inherent reason, I just didn't need one.
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* If you do, open a pull request.
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* Same goes for the lack of a convert_to_mono_float_right;
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* I didn't need one, so I didn't write one. */ |