89 lines
2.3 KiB
C++
89 lines
2.3 KiB
C++
/*
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* Copyright 2003-2019 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 "GlueResampler.hxx"
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#include "ConfiguredResampler.hxx"
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#include "Resampler.hxx"
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#include <assert.h>
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GluePcmResampler::GluePcmResampler()
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:resampler(pcm_resampler_create()) {}
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GluePcmResampler::~GluePcmResampler() noexcept
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{
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delete resampler;
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}
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void
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GluePcmResampler::Open(AudioFormat src_format, unsigned new_sample_rate)
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{
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assert(src_format.IsValid());
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assert(audio_valid_sample_rate(new_sample_rate));
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AudioFormat requested_format = src_format;
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AudioFormat dest_format = resampler->Open(requested_format,
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new_sample_rate);
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assert(dest_format.IsValid());
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assert(requested_format.channels == src_format.channels);
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assert(dest_format.channels == src_format.channels);
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assert(dest_format.sample_rate == new_sample_rate);
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if (requested_format.format != src_format.format)
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format_converter.Open(src_format.format,
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requested_format.format);
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src_sample_format = src_format.format;
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requested_sample_format = requested_format.format;
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output_sample_format = dest_format.format;
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}
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void
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GluePcmResampler::Close() noexcept
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{
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if (requested_sample_format != src_sample_format)
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format_converter.Close();
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resampler->Close();
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}
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void
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GluePcmResampler::Reset() noexcept
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{
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resampler->Reset();
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}
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ConstBuffer<void>
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GluePcmResampler::Resample(ConstBuffer<void> src)
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{
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assert(!src.IsNull());
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if (requested_sample_format != src_sample_format)
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src = format_converter.Convert(src);
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return resampler->Resample(src);
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}
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ConstBuffer<void>
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GluePcmResampler::Flush()
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{
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return resampler->Flush();
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}
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