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/*
* Copyright (C) 2003-2015 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 "config.h"
#include "ConfiguredResampler.hxx"
#include "FallbackResampler.hxx"
#include "config/ConfigGlobal.hxx"
#include "config/ConfigOption.hxx"
#include "config/ConfigError.hxx"
#include "config/Block.hxx"
#include "config/Param.hxx"
#include "util/Error.hxx"
#ifdef ENABLE_LIBSAMPLERATE
#include "LibsamplerateResampler.hxx"
#endif
#ifdef ENABLE_SOXR
#include "SoxrResampler.hxx"
#endif
#include <string.h>
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)
{
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 config_param ¶m, ConfigBlock &block)
{
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 config_param *param, ConfigBlock &buffer)
{
assert(buffer.IsEmpty());
return param == nullptr
? MakeResamplerDefaultConfig(buffer)
: MigrateResamplerConfig(*param, buffer);
}
static const ConfigBlock *
GetResamplerConfig(ConfigBlock &buffer, Error &error)
{
const auto *old_param =
config_get_param(ConfigOption::SAMPLERATE_CONVERTER);
const auto *block = config_get_block(ConfigBlockOption::RESAMPLER);
if (block == nullptr)
return MigrateResamplerConfig(old_param, buffer);
if (old_param != nullptr) {
error.Format(config_domain,
"Cannot use both 'resampler' (line %d) and 'samplerate_converter' (line %d)",
block->line, old_param->line);
return nullptr;
}
return block;
}
bool
pcm_resampler_global_init(Error &error)
{
ConfigBlock buffer;
const auto *block = GetResamplerConfig(buffer, error);
if (block == nullptr)
return false;
const char *plugin_name = block->GetBlockValue("plugin");
if (plugin_name == nullptr) {
error.Format(config_domain,
"'plugin' missing in line %d", block->line);
return false;
}
if (strcmp(plugin_name, "internal") == 0) {
selected_resampler = SelectedResampler::FALLBACK;
return true;
#ifdef ENABLE_SOXR
} else if (strcmp(plugin_name, "soxr") == 0) {
selected_resampler = SelectedResampler::SOXR;
return pcm_resample_soxr_global_init(*block, error);
#endif
#ifdef ENABLE_LIBSAMPLERATE
} else if (strcmp(plugin_name, "libsamplerate") == 0) {
selected_resampler = SelectedResampler::LIBSAMPLERATE;
return pcm_resample_lsr_global_init(*block, error);
#endif
} else {
error.Format(config_domain,
"No such resampler plugin: %s",
plugin_name);
return false;
}
}
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();
}
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