107 lines
2.4 KiB
C++
107 lines
2.4 KiB
C++
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
// Copyright The Music Player Daemon Project
|
|
|
|
#include "ConfigGlue.hxx"
|
|
#include "ReadFrames.hxx"
|
|
#include "lib/fmt/RuntimeError.hxx"
|
|
#include "fs/Path.hxx"
|
|
#include "fs/NarrowPath.hxx"
|
|
#include "filter/LoadOne.hxx"
|
|
#include "filter/Filter.hxx"
|
|
#include "filter/Prepared.hxx"
|
|
#include "pcm/AudioParser.hxx"
|
|
#include "pcm/AudioFormat.hxx"
|
|
#include "pcm/Volume.hxx"
|
|
#include "mixer/Control.hxx"
|
|
#include "system/Error.hxx"
|
|
#include "io/FileDescriptor.hxx"
|
|
#include "util/StringBuffer.hxx"
|
|
#include "util/PrintException.hxx"
|
|
|
|
#include <cassert>
|
|
#include <memory>
|
|
#include <stdexcept>
|
|
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
|
|
static std::unique_ptr<PreparedFilter>
|
|
LoadFilter(const ConfigData &config, const char *name)
|
|
{
|
|
const auto *param = config.FindBlock(ConfigBlockOption::AUDIO_FILTER,
|
|
"name", name);
|
|
if (param == nullptr)
|
|
throw FmtRuntimeError("No such configured filter: {}",
|
|
name);
|
|
|
|
return filter_configured_new(*param);
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
try {
|
|
if (argc < 3 || argc > 4) {
|
|
fprintf(stderr, "Usage: run_filter CONFIG NAME [FORMAT] <IN\n");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
const FromNarrowPath config_path = argv[1];
|
|
|
|
AudioFormat audio_format(44100, SampleFormat::S16, 2);
|
|
|
|
/* read configuration file (mpd.conf) */
|
|
|
|
const auto config = AutoLoadConfigFile(config_path);
|
|
|
|
/* parse the audio format */
|
|
|
|
if (argc > 3)
|
|
audio_format = ParseAudioFormat(argv[3], false);
|
|
|
|
const size_t in_frame_size = audio_format.GetFrameSize();
|
|
|
|
/* initialize the filter */
|
|
|
|
auto prepared_filter = LoadFilter(config, argv[2]);
|
|
|
|
/* open the filter */
|
|
|
|
auto filter = prepared_filter->Open(audio_format);
|
|
|
|
const AudioFormat out_audio_format = filter->GetOutAudioFormat();
|
|
|
|
fprintf(stderr, "audio_format=%s\n",
|
|
ToString(out_audio_format).c_str());
|
|
|
|
/* play */
|
|
|
|
FileDescriptor input_fd(STDIN_FILENO);
|
|
FileDescriptor output_fd(STDOUT_FILENO);
|
|
|
|
while (true) {
|
|
std::byte buffer[4096];
|
|
|
|
ssize_t nbytes = ReadFrames(input_fd, buffer, sizeof(buffer),
|
|
in_frame_size);
|
|
if (nbytes == 0)
|
|
break;
|
|
|
|
auto dest = filter->FilterPCM(std::span{buffer}.first(nbytes));
|
|
output_fd.FullWrite(dest.data(), dest.size());
|
|
}
|
|
|
|
while (true) {
|
|
auto dest = filter->Flush();
|
|
if (dest.data() == nullptr)
|
|
break;
|
|
output_fd.FullWrite(dest.data(), dest.size());
|
|
}
|
|
|
|
/* cleanup and exit */
|
|
|
|
return EXIT_SUCCESS;
|
|
} catch (...) {
|
|
PrintException(std::current_exception());
|
|
return EXIT_FAILURE;
|
|
}
|