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GRAPHICS: Add support for 4bpp BMPs

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This commit is contained in:
Eugene Sandulenko 2016-05-18 02:23:11 +02:00
parent b9158fcf50
commit c18945e991
1 changed files with 19 additions and 1 deletions
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20
image/codecs/bmp_raw.cpp
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@ -48,7 +48,24 @@ const Graphics::Surface *BitmapRawDecoder::decodeFrame(Common::SeekableReadStrea
int srcPitch = _width * (_bitsPerPixel >> 3);
const int extraDataLength = (srcPitch % 4) ? 4 - (srcPitch % 4) : 0;
if (_bitsPerPixel == 8) {
if (_bitsPerPixel == 4) {
for (int i = 0; i < _height; i++) {
byte *dst = (byte *)_surface->getBasePtr(0, _height - i - 1);
for (int j = 0; j < _width; j++) {
byte color = stream.readByte();
*dst++ = (color & 0xf0) >> 4;
j++;
if (j ==_width)
break;
*dst++ = color & 0x0f;
}
stream.skip(extraDataLength);
}
} else if (_bitsPerPixel == 8) {
byte *dst = (byte *)_surface->getPixels();
for (int i = 0; i < _height; i++) {
@ -100,6 +117,7 @@ const Graphics::Surface *BitmapRawDecoder::decodeFrame(Common::SeekableReadStrea
Graphics::PixelFormat BitmapRawDecoder::getPixelFormat() const {
switch (_bitsPerPixel) {
case 4:
case 8:
return Graphics::PixelFormat::createFormatCLUT8();
case 24: