99 lines
2.4 KiB
C++
99 lines
2.4 KiB
C++
/*
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* Copyright 2003-2017 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 "FormatConverter.hxx"
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#include "PcmFormat.hxx"
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#include "util/ConstBuffer.hxx"
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#include "util/RuntimeError.hxx"
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#include <assert.h>
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void
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PcmFormatConverter::Open(SampleFormat _src_format, SampleFormat _dest_format)
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{
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assert(_src_format != SampleFormat::UNDEFINED);
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assert(_dest_format != SampleFormat::UNDEFINED);
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switch (_dest_format) {
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case SampleFormat::UNDEFINED:
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assert(false);
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gcc_unreachable();
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case SampleFormat::S8:
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case SampleFormat::DSD:
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throw FormatRuntimeError("PCM conversion from %s to %s is not implemented",
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sample_format_to_string(_src_format),
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sample_format_to_string(_dest_format));
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case SampleFormat::S16:
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case SampleFormat::S24_P32:
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case SampleFormat::S32:
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case SampleFormat::FLOAT:
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break;
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}
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src_format = _src_format;
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dest_format = _dest_format;
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}
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void
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PcmFormatConverter::Close()
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{
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#ifndef NDEBUG
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src_format = SampleFormat::UNDEFINED;
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dest_format = SampleFormat::UNDEFINED;
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#endif
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}
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ConstBuffer<void>
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PcmFormatConverter::Convert(ConstBuffer<void> src)
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{
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switch (dest_format) {
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case SampleFormat::UNDEFINED:
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case SampleFormat::S8:
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case SampleFormat::DSD:
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assert(false);
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gcc_unreachable();
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case SampleFormat::S16:
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return pcm_convert_to_16(buffer, dither,
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src_format,
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src).ToVoid();
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case SampleFormat::S24_P32:
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return pcm_convert_to_24(buffer,
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src_format,
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src).ToVoid();
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case SampleFormat::S32:
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return pcm_convert_to_32(buffer,
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src_format,
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src).ToVoid();
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case SampleFormat::FLOAT:
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return pcm_convert_to_float(buffer,
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src_format,
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src).ToVoid();
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}
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assert(false);
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gcc_unreachable();
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}
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