private int CompareWav(BackgroundWorker worker, string[] files, CompareInfo ci, DiffWriter sw)
{
CompareCore cc = new CompareCore(sw);
cc.HexOut = ci.setting.hexOut;
int ret = 0;
try {
using (RiffReader rr1 = new RiffReader(files[0]))
using (RiffReader rr2 = new RiffReader(files[1])) {
if (!rr1.Parse())
{
return(-1);
}
if (!rr2.Parse())
{
return(-1);
}
if (!ci.setting.streamOrigin)
{
cc.Offset = rr1.StreamOffset;
}
// 読み込み終端。単位に注意
long limit = 0;
if (ci.setting.sampleOrder)
{
limit = (rr1.Samples > rr2.Samples) ? rr2.Samples : rr1.Samples;
}
else
{
limit = (rr1.Length > rr2.Length) ? rr2.Length : rr1.Length;
}
// 現在処理位置。単位に注意
long read = 0;
int prevProgress = 0;
int BLOCK_LENGTH = 2 * 1024 * 1024;
while (read < limit)
{
int size = BLOCK_LENGTH;
if (read + BLOCK_LENGTH > limit)
{
size = (int)(limit - read);
}
if (ci.setting.sampleOrder)
{
int q = rr1.WaveFormat.BitsPerSample / 8;
// まとめて読んで比較
if (q == 1)
{
byte[] ba1 = rr1.Read8(size);
byte[] ba2 = rr2.Read8(size);
if (cc.CompareLoop(ba1, ba2, read))
{
ret = 1;
}
}
else if (q == 2)
{
short[] sa1 = rr1.Read16(size);
short[] sa2 = rr2.Read16(size);
if (cc.CompareLoop(sa1, sa2, read * q))
{
ret = 1;
}
}
else if (q == 3)
{
int[] sa1 = rr1.Read24(size);
int[] sa2 = rr2.Read24(size);
if (cc.CompareLoop(sa1, sa2, read * q, q))
{
ret = 1;
}
}
else if (q == 4)
{
if (rr1.WaveFormat.FormatTag == WaveFormatTag.IEEE_FLOAT)
{
float[] sa1 = rr1.Read32F(size);
float[] sa2 = rr2.Read32F(size);
if (cc.CompareLoop(sa1, sa2, read * q))
{
ret = 1;
}
}
else
{
int[] sa1 = rr1.Read32(size);
int[] sa2 = rr2.Read32(size);
if (cc.CompareLoop(sa1, sa2, read * q, q))
{
ret = 1;
}
}
}
else
{
return(-1);
}
}
else
{
// まとめて読んで比較
byte[] ba1 = rr1.Read8(size);
byte[] ba2 = rr2.Read8(size);
if (cc.CompareLoop(ba1, ba2, read))
{
ret = 1;
}
}
read += size;
// 進捗を通知
int progress = (int)(read * 100 / limit);
if (progress > prevProgress)
{
prevProgress = progress;
worker.ReportProgress(progress);
}
}
}
} catch {
return(-1);
}
if (sw != null && ret == 1)
{
if (cc.DiffType)
{
sw.PrintResult(cc.Count, cc.Max);
}
else
{
sw.PrintResult(cc.Count, cc.fMax);
}
}
return(ret);
}