/* * Copyright 2003-2019 The Music Player Daemon Project * http://www.musicpd.org * * 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 2 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, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include "GlueResampler.hxx" #include "ConfiguredResampler.hxx" #include "Resampler.hxx" #include GluePcmResampler::GluePcmResampler() :resampler(pcm_resampler_create()) {} GluePcmResampler::~GluePcmResampler() noexcept { delete resampler; } void GluePcmResampler::Open(AudioFormat src_format, unsigned new_sample_rate) { assert(src_format.IsValid()); assert(audio_valid_sample_rate(new_sample_rate)); AudioFormat requested_format = src_format; AudioFormat dest_format = resampler->Open(requested_format, new_sample_rate); assert(dest_format.IsValid()); assert(requested_format.channels == src_format.channels); assert(dest_format.channels == src_format.channels); assert(dest_format.sample_rate == new_sample_rate); if (requested_format.format != src_format.format) format_converter.Open(src_format.format, requested_format.format); src_sample_format = src_format.format; requested_sample_format = requested_format.format; output_sample_format = dest_format.format; } void GluePcmResampler::Close() noexcept { if (requested_sample_format != src_sample_format) format_converter.Close(); resampler->Close(); } void GluePcmResampler::Reset() noexcept { resampler->Reset(); } ConstBuffer GluePcmResampler::Resample(ConstBuffer src) { assert(!src.IsNull()); if (requested_sample_format != src_sample_format) src = format_converter.Convert(src); return resampler->Resample(src); } ConstBuffer GluePcmResampler::Flush() { return resampler->Flush(); }