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/*
* Copyright 2003-2016 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.
*/
/*
* This program is a command line interface to MPD's PCM conversion
* library (pcm_convert.c).
*
*/
#include "config.h"
#include "AudioParser.hxx"
#include "AudioFormat.hxx"
#include "pcm/PcmConvert.hxx"
#include "util/ConstBuffer.hxx"
#include "util/StaticFifoBuffer.hxx"
#include "util/Error.hxx"
#include "Log.hxx"
#include <assert.h>
#include <stddef.h>
#include <stdlib.h>
#include <unistd.h>
int main(int argc, char **argv)
{
AudioFormat in_audio_format, out_audio_format;
if (argc != 3) {
fprintf(stderr,
"Usage: run_convert IN_FORMAT OUT_FORMAT <IN >OUT\n");
return 1;
}
Error error;
if (!audio_format_parse(in_audio_format, argv[1],
false, error)) {
LogError(error, "Failed to parse audio format");
return EXIT_FAILURE;
}
AudioFormat out_audio_format_mask;
if (!audio_format_parse(out_audio_format_mask, argv[2],
true, error)) {
LogError(error, "Failed to parse audio format");
return EXIT_FAILURE;
}
out_audio_format = in_audio_format;
out_audio_format.ApplyMask(out_audio_format_mask);
const size_t in_frame_size = in_audio_format.GetFrameSize();
PcmConvert state;
if (!state.Open(in_audio_format, out_audio_format_mask, error)) {
LogError(error, "Failed to open PcmConvert");
return EXIT_FAILURE;
}
StaticFifoBuffer<uint8_t, 4096> buffer;
while (true) {
{
const auto dest = buffer.Write();
assert(!dest.IsEmpty());
ssize_t nbytes = read(0, dest.data, dest.size);
if (nbytes <= 0)
break;
buffer.Append(nbytes);
}
auto src = buffer.Read();
assert(!src.IsEmpty());
src.size -= src.size % in_frame_size;
if (src.IsEmpty())
continue;
buffer.Consume(src.size);
auto output = state.Convert({src.data, src.size}, error);
if (output.IsNull()) {
state.Close();
LogError(error, "Failed to convert");
return EXIT_FAILURE;
}
gcc_unused ssize_t ignored = write(1, output.data,
output.size);
}
state.Close();
return EXIT_SUCCESS;
}
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