/*******************************************************************************
* Parser Definitions
******************************************************************************/
bool KAbstractHdrParserPrivate::parse()
{
// Initialize lexer
nextChar();
if(!readExpect("#?RADIANCE\n"))
{
qFatal("No #?RADIANCE header, the file may be corrupt or invalid.");
return false;
}
forceValidate();
nextToken();
// Read the Key/Value pairs
for (;;)
{
if (peekToken() == PT_ENDOFHEADER) break;
switch (nextToken())
{
case PT_ERROR:
qFatal("Encountered an error! Aborting");
return false;
case PT_EOF:
return true;
case PT_KEYVALUE:
m_parser->onKeyValue(m_key.c_str(), m_value.c_str());
case PT_ENDOFHEADER:
break;
}
}
// Read the data
parseDimension();
parseDimension();
m_parser->onResolution(m_xOrder, m_yOrder, m_xSize, m_ySize);
// Start parsing the data
Rgbe color;
RleCode rle;
float *dest = m_parser->beginData();
int count;
size_t repeat = 0;
unsigned invalidCount = 0;
unsigned char *scanline = new unsigned char[4 * m_xSize];
unsigned char *ptr, *end;
int scanlines = 0;
color = nextColor();
while (scanlines != m_ySize)
{
// Check for invalid color which marks RLE pixel repeat
// Consecutive repeat invalid pixels increments repeat count.
if (color.r == 1 && color.g == 1 && color.b == 1)
{
qFatal("Untested! Possibly incorrect!");
while (color.r == 1 && color.g == 1 && color.b == 1)
{
repeat += (color.e << (invalidCount * 8));
color = nextColor();
++invalidCount;
}
while (repeat)
{
writeColor(dest, color);
--repeat;
}
}
// Check for invalid color which marks per-element RLE
if (color.r == 2 && color.g == 2)
{
// Check scanline width
if (((color.b << 8) | color.e) != m_xSize)
{
qFatal("Incorrect encoded scanline width! Expected `%d`, got `%d`", m_xSize, int((color.r << 8) | color.e));
}
// Read all channels
ptr = &scanline[0];
int written = 0;
for (int channel = 0; channel < 4; ++channel)
{
end = &scanline[(channel+1)*m_xSize];
while (ptr < end)
{
rle = nextRle();
if (rle.run > 128)
{
count = int(rle.run) - 128;
Q_ASSERT(count != 0);
Q_ASSERT(count <= end - ptr);
while (count > 0)
{
++written;
*ptr++ = rle.color;
--count;
}
}
else
{
count = int(rle.run) - 1;
Q_ASSERT(count != -1);
Q_ASSERT(count <= end - ptr);
*ptr++ = rle.color;
++written;
while (count > 0)
{
++written;
*ptr++ = nextChar();
--count;
}
}
}
}
// Output the scanline data
writeScanline(dest, scanline, scanlines);
++scanlines;
}
color = nextColor();
}
m_parser->endData();
delete [] scanline;
return false;
}
void SkGlyphCache::validate() const {
#ifdef SK_DEBUG_GLYPH_CACHE
forceValidate();
#endif
}