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/*
* Copyright (C) 2003-2010 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 "audio_parser.h"
#include "audio_format.h"
#include "pcm_convert.h"
#include "conf.h"
#include "fifo_buffer.h"
#include <glib.h>
#include <assert.h>
#include <stddef.h>
#include <unistd.h>
const char *
config_get_string(G_GNUC_UNUSED const char *name, const char *default_value)
{
return default_value;
}
int main(int argc, char **argv)
{
GError *error = NULL;
struct audio_format in_audio_format, out_audio_format;
struct pcm_convert_state state;
const void *output;
ssize_t nbytes;
size_t length;
if (argc != 3) {
g_printerr("Usage: run_convert IN_FORMAT OUT_FORMAT <IN >OUT\n");
return 1;
}
if (!audio_format_parse(&in_audio_format, argv[1],
false, &error)) {
g_printerr("Failed to parse audio format: %s\n",
error->message);
return 1;
}
if (!audio_format_parse(&out_audio_format, argv[2],
false, &error)) {
g_printerr("Failed to parse audio format: %s\n",
error->message);
return 1;
}
const size_t in_frame_size = audio_format_frame_size(&in_audio_format);
pcm_convert_init(&state);
struct fifo_buffer *buffer = fifo_buffer_new(4096);
while (true) {
void *p = fifo_buffer_write(buffer, &length);
assert(p != NULL);
nbytes = read(0, p, length);
if (nbytes <= 0)
break;
fifo_buffer_append(buffer, nbytes);
const void *src = fifo_buffer_read(buffer, &length);
assert(src != NULL);
length -= length % in_frame_size;
if (length == 0)
continue;
fifo_buffer_consume(buffer, length);
output = pcm_convert(&state, &in_audio_format, src, length,
&out_audio_format, &length, &error);
if (output == NULL) {
g_printerr("Failed to convert: %s\n", error->message);
return 2;
}
write(1, output, length);
}
pcm_convert_deinit(&state);
}
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