public static IT.Sample sample_to_brr(IT.Sample sample, int sample_id, string song_name)
{
sample.trim();
sample.expand_ping_loop();
if (sample.length % 16 != 0 || sample.loop_start % 16 != 0)
{
sample = config.resampler.resample(sample, sample.length); // Attempt to resample it to same length;
}
// resampler will figure out how to achieve
// nearest multiple of 16 loops/length
string wav_file = G.TEMP_PATH + sample_id.ToString().PadLeft(2, '0') + ".wav";
string brr_file = G.TEMP_PATH + sample_id.ToString().PadLeft(2, '0') + ".brr";
string out_file = G.AMK_SAMPLES_PATH + song_name + "/" + sample_id.ToString().PadLeft(2, '0') + " " + format_filename(sample.name) + ".brr";
sample.save_to_file(wav_file);
show_verbose("Converting sample {0} to BRR...", sample_id);
_run_brr_converter(wav_file, brr_file, sample.loop_start);
if (!_poll_for_file(brr_file, _calculate_brr_size(sample)))
{
throw new FileLoadException("The temp file: \"" + brr_file + "\" was incorrectly generated or missing.");
}
_fix_brr_loop(sample, brr_file, out_file);
return(sample);
}
private static bool _initial_block_needed(IT.Sample sample)
{
bool initial_block = false;
for (int i = 0; i < 16; i++)
{
initial_block |= sample.sample_data[i].mono != 0;
}
return(initial_block);
}
private static int _calculate_brr_size(IT.Sample sample)
{
//show_debug("{0} {1}", sample.loop_start, sample.length);
Debug.Assert(sample.length % 16 == 0);
if (sample.looped)
{
Debug.Assert(sample.loop_start % 16 == 0);
Debug.Assert(sample.loop_end == sample.length);
}
if (_initial_block_needed(sample))
{
return((config.use_snesbrr) ? 9 * sample.length / 16 : 9 * sample.length / 16 + 9);
}
else
{
return(9 * sample.length / 16);
}
}
private static void _fix_brr_loop(IT.Sample sample, string brr_file, string new_filename)
{
var bytes = new List <byte>();
byte[] brr_bytes = File.ReadAllBytes(brr_file);
if (sample.looped)
{
int loop_ptr = 9 * sample.loop_start / 16;
if (!config.use_snesbrr && _initial_block_needed(sample))
{
loop_ptr += 9;
}
append_bytes(bytes, to_bytes((ushort)(loop_ptr)));
for (int i = 0; i < brr_bytes.Length; i++)
{
bytes.Add(brr_bytes[i]);
}
}
else
{
append_bytes(bytes, to_bytes((ushort)0));
for (int i = 0; i < brr_bytes.Length; i++)
{
if (i == brr_bytes.Length - 9)
{
bytes.Add((byte)(brr_bytes[i] & 0xFD));
}
else
{
bytes.Add(brr_bytes[i]);
}
}
}
File.WriteAllBytes(new_filename, bytes.ToArray());
}