/* * Copyright 2003-2022 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 "ConfiguredResampler.hxx" #include "FallbackResampler.hxx" #include "config/Data.hxx" #include "config/Option.hxx" #include "config/Block.hxx" #include "config/Param.hxx" #include "util/RuntimeError.hxx" #include "config.h" #ifdef ENABLE_LIBSAMPLERATE #include "LibsamplerateResampler.hxx" #endif #ifdef ENABLE_SOXR #include "SoxrResampler.hxx" #endif #include #include enum class SelectedResampler { FALLBACK, #ifdef ENABLE_LIBSAMPLERATE LIBSAMPLERATE, #endif #ifdef ENABLE_SOXR SOXR, #endif }; static SelectedResampler selected_resampler = SelectedResampler::FALLBACK; static const ConfigBlock * MakeResamplerDefaultConfig(ConfigBlock &block) noexcept { assert(block.IsEmpty()); #ifdef ENABLE_LIBSAMPLERATE block.AddBlockParam("plugin", "libsamplerate"); #elif defined(ENABLE_SOXR) block.AddBlockParam("plugin", "soxr"); #else block.AddBlockParam("plugin", "internal"); #endif return █ } /** * Convert the old "samplerate_converter" setting to a new-style * "resampler" block. */ static const ConfigBlock * MigrateResamplerConfig(const ConfigParam ¶m, ConfigBlock &block) noexcept { assert(block.IsEmpty()); block.line = param.line; const char *converter = param.value.c_str(); if (*converter == 0 || strcmp(converter, "internal") == 0) { block.AddBlockParam("plugin", "internal"); return █ } #ifdef ENABLE_SOXR if (strcmp(converter, "soxr") == 0) { block.AddBlockParam("plugin", "soxr"); return █ } if (memcmp(converter, "soxr ", 5) == 0) { block.AddBlockParam("plugin", "soxr"); block.AddBlockParam("quality", converter + 5); return █ } #endif block.AddBlockParam("plugin", "libsamplerate"); block.AddBlockParam("type", converter); return █ } static const ConfigBlock * MigrateResamplerConfig(const ConfigParam *param, ConfigBlock &buffer) noexcept { assert(buffer.IsEmpty()); return param == nullptr ? MakeResamplerDefaultConfig(buffer) : MigrateResamplerConfig(*param, buffer); } static const ConfigBlock * GetResamplerConfig(const ConfigData &config, ConfigBlock &buffer) { const auto *old_param = config.GetParam(ConfigOption::SAMPLERATE_CONVERTER); const auto *block = config.GetBlock(ConfigBlockOption::RESAMPLER); if (block == nullptr) return MigrateResamplerConfig(old_param, buffer); if (old_param != nullptr) throw FormatRuntimeError("Cannot use both 'resampler' (line %d) and 'samplerate_converter' (line %d)", block->line, old_param->line); block->SetUsed(); return block; } void pcm_resampler_global_init(const ConfigData &config) { ConfigBlock buffer; const auto *block = GetResamplerConfig(config, buffer); const char *plugin_name = block->GetBlockValue("plugin"); if (plugin_name == nullptr) throw FormatRuntimeError("'plugin' missing in line %d", block->line); if (strcmp(plugin_name, "internal") == 0) { selected_resampler = SelectedResampler::FALLBACK; #ifdef ENABLE_SOXR } else if (strcmp(plugin_name, "soxr") == 0) { selected_resampler = SelectedResampler::SOXR; pcm_resample_soxr_global_init(*block); #endif #ifdef ENABLE_LIBSAMPLERATE } else if (strcmp(plugin_name, "libsamplerate") == 0) { selected_resampler = SelectedResampler::LIBSAMPLERATE; pcm_resample_lsr_global_init(*block); #endif } else { throw FormatRuntimeError("No such resampler plugin: %s", plugin_name); } } PcmResampler * pcm_resampler_create() { switch (selected_resampler) { case SelectedResampler::FALLBACK: return new FallbackPcmResampler(); #ifdef ENABLE_LIBSAMPLERATE case SelectedResampler::LIBSAMPLERATE: return new LibsampleratePcmResampler(); #endif #ifdef ENABLE_SOXR case SelectedResampler::SOXR: return new SoxrPcmResampler(); #endif } gcc_unreachable(); }