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/*
* cue-bin-split - Split raw PCM files on time boundaries
* Copyright (c) 2015 David Phillips <dbphillipsnz@gmail.com>
* All rights reserved
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <getopt.h>
#include "cue-bin-split.h"
#include "timestamp.h"
/* FIXME move me */
void die_help()
{
fprintf(stderr,
"\n"
"Options: \n"
" -r bitrate_Hz\n"
" -c channel_count\n"
" -i input_file\n"
" -s size of a single channel's sample (bytes)\n"
" -f name_format (%%d and co are replaced with track number)\n"
);
exit(EXIT_FAILURE);
}
int main(int argc, char **argv)
{
/* File handles */
FILE *fin = NULL;
FILE *fout = NULL;
/* Command line options */
char *format = NULL;
char *in_fname = NULL;
int channels = 0;
int rate = 0;
int sample_size = 0;
/* Misc */
char opt = 0;
char out_fname[] = "track-000000000000"; /* That should do it */
int index = 0;
int items = 0;
int i = 0;
char buffer[BUFFER_SIZE];
/* Timestamp building blocks */
int mm = 0;
int ss = 0;
int ff = 0;
/* Boundaries */
double start_sec = 0;
double finish_sec = 0;
unsigned long start_sample = 0;
unsigned long finish_sample = 0;
while ( ( opt = getopt(argc, argv, "r:c:i:s:f:") ) != -1 )
{
switch (opt)
{
case 'r':
rate = atoi(optarg);
break;
case 'c':
channels = atoi(optarg);
break;
case 'i':
in_fname = optarg;
break;
case 's':
sample_size = atoi(optarg);
break;
case 'f':
format = optarg;
break;
case '?':
default:
die_help();
break;
}
}
if (channels <= 0 ||
rate <= 0 ||
sample_size <= 0)
{
fprintf(stderr, "ERROR: Channel count, bitrate and sample size must all be positive\n");
die_help();
}
/* Open it up */
if ((fin = fopen(in_fname, "r")) == NULL)
{
fprintf(stderr,"Failed to open '%s': ", in_fname);
perror("fopen");
return EXIT_FAILURE;
}
index = 0;
items = get_stamp(&mm, &ss, &ff); /* FIXME doesn't check return value */
start_sec = (double)mm*60 + (double)ss + ((double)ff)/FRAMES_PER_SEC;
while ( ( items = get_stamp(&mm, &ss, &ff) ) )
{
index++;
i = snprintf(out_fname, sizeof(out_fname), format, index);
if (i == sizeof(out_fname))
{
fprintf(stderr, "Filename too large for buffer\n");
fclose(fin);
return EXIT_FAILURE;
}
/* Open output file */
if ((fout = fopen(out_fname, "w")) == NULL)
{
fprintf(stderr,"Failed to open '%s': ", out_fname);
perror("fopen");
fclose(fin);
return EXIT_FAILURE;
}
/* EOF means this is the last track; run it to end of input file */
if (items == EOF)
{
finish_sec = -1;
} else {
/* Following track starts at end of last */
if (items != 3)
{
fprintf(stderr, "Timestamp #%d malformed\n", index);
break;
}
finish_sec = (double)mm*60 + (double)ss + ((double)ff)/75;
}
printf("%s starts %f s, finishes %f s\n", out_fname, start_sec, finish_sec);
start_sample = start_sec * rate * channels;
finish_sample = finish_sec * rate * channels;
/* Seek to first sample of track */
fseek(fin, (start_sample * sample_size), SEEK_SET);
if (finish_sec >= 0)
{
for (i = (int)start_sample; i < (int)finish_sample; i += items)
{
/* FIXME unnecessary call to fwrite with items == 0 possible */
/* FIXME Handle EOF properly, silly! */
if ((items = fread(buffer, sample_size, sizeof(buffer)/sample_size, fin)))
{
if (feof(fin))
break;
fwrite(buffer, items, sample_size, fout);
}
}
} else {
for (i = (int)start_sample; ; i += items)
{
/* FIXME unnecessary call to fwrite with items == 0 possible */
if ((items = fread(buffer, sample_size, sizeof(buffer)/sample_size, fin)))
{
if (feof(fin))
break;
fwrite(buffer, items, sample_size, fout);
}
}
}
fclose(fout);
start_sec = finish_sec;
if (finish_sec < 0)
break;
}
return 0;
}
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