void RemapPixels()
{
int len = pixels.Length;
indexedPixels = new byte[len];
if (firstFrame || !useGlobalColorTable)
{
// initialize quantizer
nq = new NeuQuant(pixels, len, quality);
colorTab = nq.Process(); // create reduced palette
}
for (int i = 0; i < len; i++)
{
int index = nq.Map(pixels[i].r & 0xff, pixels[i].g & 0xff, pixels[i].b & 0xff);
usedEntry[index] = true;
indexedPixels[i] = (byte)index;
if (dispose == 1 && prevIndexedPixels != null)
{
if (indexedPixels[i] == prevIndexedPixels[i])
{
indexedPixels[i] = (byte)transIndex;
}
else
{
prevIndexedPixels[i] = (byte)index;
}
}
}
colorDepth = 8;
palSize = 7;
// get closest match to transparent color if specified
if (transparent.HasValue)
{
var c = transparent.Value;
//transIndex = FindClosest(transparent);
transIndex = nq.Map(c.b, c.g, c.r);
}
if (dispose == 1 && prevIndexedPixels == null)
{
prevIndexedPixels = indexedPixels.Clone() as byte[];
}
}
public void Finish()
{
if (!started)
throw new InvalidOperationException ("Start() must be called before Finish()");
started = false;
ms.WriteByte (0x3b); // gif trailer
ms.Flush ();
// reset for subsequent use
transIndex = 0;
pixels = null;
indexedPixels = null;
prevIndexedPixels = null;
colorTab = null;
firstFrame = true;
nq = null;
}
void RemapPixels()
{
int len = pixels.Length;
indexedPixels = new byte[len];
if (firstFrame || !useGlobalColorTable) {
// initialize quantizer
nq = new NeuQuant (pixels, len, quality);
colorTab = nq.Process (); // create reduced palette
}
for (int i = 0; i < len; i++) {
int index = nq.Map (pixels [i].r & 0xff, pixels [i].g & 0xff, pixels [i].b & 0xff);
usedEntry [index] = true;
indexedPixels [i] = (byte)index;
if (dispose == 1 && prevIndexedPixels != null) {
if (indexedPixels [i] == prevIndexedPixels [i]) {
indexedPixels [i] = (byte)transIndex;
} else {
prevIndexedPixels [i] = (byte)index;
}
}
}
colorDepth = 8;
palSize = 7;
// get closest match to transparent color if specified
if (transparent.HasValue) {
var c = transparent.Value;
//transIndex = FindClosest(transparent);
transIndex = nq.Map (c.b, c.g, c.r);
}
if (dispose == 1 && prevIndexedPixels == null)
prevIndexedPixels = indexedPixels.Clone () as byte[];
}