public static BytePtr PDJPG_DecodeScanForComponentLayer(BytePtr buf, int sz, string name)
{
BytePtr cs, cs2, cse;
int i;
Console.WriteLine("PDJPG_DecodeScanForComponentLayer: Sz={0} Name={1}", sz, name);
cs = buf; cse = buf + sz;
while (cs < cse)
{
// if (cs[0] == 0xFF)
// Console.WriteLine("FF,{0}", cs[1]);
if ((cs[0] == 0xFF) && (cs[1] == JPG.JPG_APP11))
{
i = (cs[2] << 8) | cs[3];
cs2 = cs + i + 2;
cs += 4;
Console.Write("APP11 {0}\n", cs.getString());
if (!cs.strcmp("TagLayer"))
{
//This does not cross tag-layer boundaries
break;
}
if (!cs.strcmp("CompLayer"))
{
cs += cs.strlen() + 1;
Console.Write("APP11 CompLayer={0}\n", cs.getString());
if (!cs.strcmp(name))
{
Console.Write("Found {0}\n", name);
cs += cs.strlen() + 1;
return (cs2);
}
cs += cs.strlen() + 1;
continue;
}
cs += i - 2;
continue;
}
if ((cs[0] == 0xFF) && (cs[1] >= JPG.JPG_APP0) && (cs[1] <= JPG.JPG_APP15))
{
i = (cs[2] << 8) | cs[3];
cs += i + 2;
continue;
}
cs=cs+1;
}
Console.Write("Not Found {0}\n", name);
return new BytePtr(null);
}
public static BytePtr PDJPG_DecodeScanNextTagLayer(BytePtr buf, int sz, out string name)
{
BytePtr cs, cs2, cse;
int i;
// Console.WriteLine("PDJPG_DecodeScanNextTagLayer: Sz={0} Name={1}", sz, name);
cs = buf; cse = buf + sz;
while (cs < cse)
{
// if (cs[0] == 0xFF)
// Console.WriteLine("FF,{0}", cs[1]);
if ((cs[0] == 0xFF) && (cs[1] == JPG.JPG_APP11))
{
i = (cs[2] << 8) | cs[3];
cs2 = cs + i + 2;
cs += 4;
Console.Write("APP11 {0}\n", cs.getString());
if (!cs.strcmp("TagLayer"))
{
cs += cs.strlen() + 1;
name = cs.getString();
Console.Write("APP11 TagLayer={0}\n", name);
cs += cs.strlen() + 1;
return (cs2);
}
cs += i - 2;
continue;
}
if ((cs[0] == 0xFF) && (cs[1] >= JPG.JPG_APP0) && (cs[1] <= JPG.JPG_APP15))
{
i = (cs[2] << 8) | cs[3];
cs += i + 2;
continue;
}
cs = cs + 1;
}
// Console.Write("Not Found {0}\n", name);
name = null;
return new BytePtr(null);
}
public static int PDJPG_MarkerAPP11(PDJPG_Context ctx, BytePtr buf)
{
// int cr, cg, cb, ca;
buf += 2;
if (!buf.strcmp("AlphaColor"))
{
buf += buf.strlen() + 1;
// sscanf_s(buf, "%d %d %d %d", out cr, cg, &cb, &ca);
// PDJPG_SetContextAlphaColor(ctx, cr, cg, cb, ca);
return (1);
}
return (0);
}