83 lines
2.1 KiB
C++
83 lines
2.1 KiB
C++
/*
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* Copyright 2003-2016 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include "FlacPcm.hxx"
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#include <assert.h>
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template<typename T>
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static void
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FlacImportStereo(T *dest, const FLAC__int32 *const src[], size_t n_frames)
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{
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for (size_t i = 0; i != n_frames; ++i) {
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*dest++ = (T)src[0][i];
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*dest++ = (T)src[1][i];
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}
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}
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template<typename T>
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static void
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FlacImportAny(T *dest, const FLAC__int32 *const src[], size_t n_frames,
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unsigned n_channels)
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{
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for (size_t i = 0; i != n_frames; ++i)
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for (unsigned c = 0; c != n_channels; ++c)
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*dest++ = src[c][i];
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}
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template<typename T>
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static void
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FlacImport(T *dest, const FLAC__int32 *const src[], size_t n_frames,
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unsigned n_channels)
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{
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if (n_channels == 2)
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FlacImportStereo(dest, src, n_frames);
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else
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FlacImportAny(dest, src, n_frames, n_channels);
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}
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void
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flac_convert(void *dest,
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unsigned int num_channels, SampleFormat sample_format,
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const FLAC__int32 *const buf[],
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size_t n_frames)
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{
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switch (sample_format) {
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case SampleFormat::S16:
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FlacImport((int16_t *)dest, buf, n_frames, num_channels);
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break;
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case SampleFormat::S24_P32:
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case SampleFormat::S32:
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FlacImport((int32_t *)dest, buf, n_frames, num_channels);
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break;
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case SampleFormat::S8:
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FlacImport((int8_t *)dest, buf, n_frames, num_channels);
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break;
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case SampleFormat::FLOAT:
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case SampleFormat::DSD:
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case SampleFormat::UNDEFINED:
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assert(false);
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gcc_unreachable();
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}
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}
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