public static int PDJPG_EncodeComponentCtxI2(
PDJPG_Context ctx,
byte[] rgba, byte[] norm, byte[] spec, byte[] luma, byte[] lebe,
BytePtr obuf, int xs, int ys, int qf, string tlname, PDJPG_LayerInfo linf)
{
byte[] tbuf;
BytePtr ct;
int i, j, k, n;
if (rgba == null) return (-1);
if (linf != null)
{
ctx.bcst_orgx = linf.orgx;
ctx.bcst_orgy = linf.orgy;
ctx.bcst_alpha = linf.alpha;
ctx.bcst_blend = linf.blend;
ctx.bcst_flags = (uint)linf.flags;
ctx.bcst_minx = linf.minx;
ctx.bcst_miny = linf.miny;
ctx.bcst_maxx = linf.maxx;
ctx.bcst_maxy = linf.maxy;
}
else
{
ctx.bcst_orgx = 0;
ctx.bcst_orgy = 0;
ctx.bcst_alpha = 255;
ctx.bcst_blend = 0;
ctx.bcst_flags = 0;
ctx.bcst_minx = 0;
ctx.bcst_miny = 0;
ctx.bcst_maxx = 0;
ctx.bcst_maxy = 0;
}
n = xs * ys;
tbuf = new byte[xs * ys * 4];
ct = obuf;
//ct.emit(0xFF);
//ct.emit(JPG.JPG_SOI);
//ct = PDJPG_EmitMarkerJFIF(ctx, ct);
if (tlname != null)
{
ct = PDJPG_EmitTagLayer(ctx, ct, tlname);
ct = PDJPG_EmitComponentLayer(ctx, ct, "RGB");
i = PDJPG_EncodeLDatCtx(ctx, rgba, ct, xs, ys, qf, 0);
if (i < 0) { return (i); }
ct += i;
}
else
{
ct = PDJPG_EmitComponentLayer(ctx, ct, "RGB");
// i=PDJPG_EncodeCtx(ctx, rgba, ct, xs, ys, qf, 0);
i = PDJPG_EncodeBaseCtx(ctx, rgba, ct, xs, ys, qf, 0);
if (i < 0) { return (i); }
ct += i;
}
// if((ct[-2]==0xFF) && (ct[-2]==JPG_EOI))
// { ct-=2; }
if (norm != null)
{
for (i = 0; i < n; i++)
{
tbuf[i * 4 + 0] = norm[i * 4 + 0];
tbuf[i * 4 + 1] = norm[i * 4 + 2];
tbuf[i * 4 + 2] = norm[i * 4 + 1];
tbuf[i * 4 + 3] = 255;
}
ct = PDJPG_EmitComponentLayer(ctx, ct, "XYZ");
i = PDJPG_EncodeLDatCtx(ctx, tbuf, ct, xs, ys, qf, 0);
if (i < 0) { return (i); }
ct += i;
}
if (spec != null)
{
ct = PDJPG_EmitComponentLayer(ctx, ct, "SpRGB");
i = PDJPG_EncodeLDatCtx(ctx, spec, ct, xs, ys, qf, 0);
if (i < 0) { return (i); }
ct += i;
}
if ((norm != null) || (spec != null))
{
for (i = 0; i < n; i++)
{
j = rgba[i * 4 + 3];
tbuf[i * 4 + 0] = (byte)((norm != null) ? norm[i * 4 + 3] : j);
tbuf[i * 4 + 1] = rgba[i * 4 + 3];
tbuf[i * 4 + 2] = (byte)((spec != null) ? spec[i * 4 + 3] : j);
tbuf[i * 4 + 3] = 255;
}
ct = PDJPG_EmitComponentLayer(ctx, ct, "DASe");
i = PDJPG_EncodeLDatCtx(ctx, tbuf, ct, xs, ys, qf, 0);
if (i < 0) { return (i); }
ct += i;
}
else
{
k = 0;
for (i = 0; i < n; i++)
{
j = rgba[i * 4 + 3];
if (j != 255) k = 1;
tbuf[i * 4 + 0] = (byte)j;
tbuf[i * 4 + 1] = (byte)j;
tbuf[i * 4 + 2] = (byte)j;
tbuf[i * 4 + 3] = 255;
}
if (k != 0)
{
ct = PDJPG_EmitComponentLayer(ctx, ct, "Alpha");
i = PDJPG_EncodeLDatCtx(ctx, tbuf, ct, xs, ys, qf, PDJPG_YYYA);
if (i < 0) { return (i); }
ct += i;
}
}
if (luma != null)
{
ct = PDJPG_EmitComponentLayer(ctx, ct, "LuRGB");
i = PDJPG_EncodeLDatCtx(ctx, luma, ct, xs, ys, qf, 0);
if (i < 0) { return (i); }
ct += i;
}
if (lebe != null)
{
ct = PDJPG_EmitComponentLayer(ctx, ct, "LeBe");
i = PDJPG_EncodeLDatCtx(ctx, lebe, ct, xs, ys, qf, 0);
if (i < 0) { return (i); }
ct += i;
}
//ct.emit(0xFF);
//ct.emit(JPG.JPG_EOI);
//free(tbuf);
return (ct - obuf);
}
public static int PDJPG_DecodeComponent(BytePtr buf, int sz,
byte[] rgba, byte[] norm, byte[] spec, byte[] luma,
out int xs, out int ys, out PDJPG_LayerInfo info)
{
PDJPG_Context ctx;
int i;
ctx = PDJPG_AllocContext();
i = PDJPG_DecodeComponentCtx(ctx, buf, sz,
rgba, norm, spec, luma, out xs, out ys);
// ctx.jpg_imgbuf=null;
info = new PDJPG_LayerInfo();
info.flags = (int)ctx.bcst_flags;
info.alpha = ctx.bcst_alpha;
info.blend = ctx.bcst_blend;
info.orgx = ctx.bcst_orgx;
info.orgy = ctx.bcst_orgy;
PDJPG_FreeContext(ctx);
return (i);
}