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Diffstat (limited to 'video/codecs/qtrle.cpp')
-rw-r--r--video/codecs/qtrle.cpp135
1 files changed, 73 insertions, 62 deletions
diff --git a/video/codecs/qtrle.cpp b/video/codecs/qtrle.cpp
index f01720ec86..d2cdea27de 100644
--- a/video/codecs/qtrle.cpp
+++ b/video/codecs/qtrle.cpp
@@ -37,28 +37,25 @@ namespace Video {
QTRLEDecoder::QTRLEDecoder(uint16 width, uint16 height, byte bitsPerPixel) : Codec() {
_bitsPerPixel = bitsPerPixel;
- _pixelFormat = g_system->getScreenFormat();
- // We need to increase the surface size to a multiple of 4
+ // We need to ensure the width is a multiple of 4
uint16 wMod = width % 4;
- if(wMod != 0)
+ if (wMod != 0)
width += 4 - wMod;
- debug(2, "QTRLE corrected width: %d", width);
-
_surface = new Graphics::Surface();
- _surface->create(width, height, _bitsPerPixel <= 8 ? Graphics::PixelFormat::createFormatCLUT8() : _pixelFormat);
+ _surface->create(width, height, getPixelFormat());
}
#define CHECK_STREAM_PTR(n) \
if ((stream->pos() + n) > stream->size()) { \
- warning ("Problem: stream out of bounds (%d >= %d)", stream->pos() + n, stream->size()); \
+ warning("QTRLE Problem: stream out of bounds (%d > %d)", stream->pos() + n, stream->size()); \
return; \
}
#define CHECK_PIXEL_PTR(n) \
if ((int32)pixelPtr + n > _surface->w * _surface->h) { \
- warning ("Problem: pixel ptr = %d, pixel limit = %d", pixelPtr + n, _surface->w * _surface->h); \
+ warning("QTRLE Problem: pixel ptr = %d, pixel limit = %d", pixelPtr + n, _surface->w * _surface->h); \
return; \
} \
@@ -132,8 +129,6 @@ void QTRLEDecoder::decode2_4(Common::SeekableReadStream *stream, uint32 rowPtr,
for (int8 i = numPixels - 1; i >= 0; i--) {
pi[numPixels - 1 - i] = (stream->readByte() >> ((i * bpp) & 0x07)) & ((1 << bpp) - 1);
- // FIXME: Is this right?
- //stream_ptr += ((i & ((num_pixels>>2)-1)) == 0);
if ((i & ((numPixels >> 2) - 1)) == 0)
stream->readByte();
}
@@ -215,7 +210,7 @@ void QTRLEDecoder::decode8(Common::SeekableReadStream *stream, uint32 rowPtr, ui
void QTRLEDecoder::decode16(Common::SeekableReadStream *stream, uint32 rowPtr, uint32 linesToChange) {
uint32 pixelPtr = 0;
- OverlayColor *rgb = (OverlayColor *)_surface->pixels;
+ uint16 *rgb = (uint16 *)_surface->pixels;
while (linesToChange--) {
CHECK_STREAM_PTR(2);
@@ -235,25 +230,15 @@ void QTRLEDecoder::decode16(Common::SeekableReadStream *stream, uint32 rowPtr, u
CHECK_PIXEL_PTR(rleCode);
- while (rleCode--) {
- // Convert from RGB555 to the format specified by the Overlay
- byte r = 0, g = 0, b = 0;
- Graphics::colorToRGB<Graphics::ColorMasks<555> >(rgb16, r, g, b);
- rgb[pixelPtr++] = _pixelFormat.RGBToColor(r, g, b);
- }
+ while (rleCode--)
+ rgb[pixelPtr++] = rgb16;
} else {
CHECK_STREAM_PTR(rleCode * 2);
CHECK_PIXEL_PTR(rleCode);
// copy pixels directly to output
- while (rleCode--) {
- uint16 rgb16 = stream->readUint16BE();
-
- // Convert from RGB555 to the format specified by the Overlay
- byte r = 0, g = 0, b = 0;
- Graphics::colorToRGB<Graphics::ColorMasks<555> >(rgb16, r, g, b);
- rgb[pixelPtr++] = _pixelFormat.RGBToColor(r, g, b);
- }
+ while (rleCode--)
+ rgb[pixelPtr++] = stream->readUint16BE();
}
}
@@ -263,7 +248,7 @@ void QTRLEDecoder::decode16(Common::SeekableReadStream *stream, uint32 rowPtr, u
void QTRLEDecoder::decode24(Common::SeekableReadStream *stream, uint32 rowPtr, uint32 linesToChange) {
uint32 pixelPtr = 0;
- OverlayColor *rgb = (OverlayColor *)_surface->pixels;
+ uint32 *rgb = (uint32 *)_surface->pixels;
while (linesToChange--) {
CHECK_STREAM_PTR(2);
@@ -283,11 +268,12 @@ void QTRLEDecoder::decode24(Common::SeekableReadStream *stream, uint32 rowPtr, u
byte r = stream->readByte();
byte g = stream->readByte();
byte b = stream->readByte();
+ uint32 color = _surface->format.RGBToColor(r, g, b);
CHECK_PIXEL_PTR(rleCode);
while (rleCode--)
- rgb[pixelPtr++] = _pixelFormat.RGBToColor(r, g, b);
+ rgb[pixelPtr++] = color;
} else {
CHECK_STREAM_PTR(rleCode * 3);
CHECK_PIXEL_PTR(rleCode);
@@ -297,7 +283,7 @@ void QTRLEDecoder::decode24(Common::SeekableReadStream *stream, uint32 rowPtr, u
byte r = stream->readByte();
byte g = stream->readByte();
byte b = stream->readByte();
- rgb[pixelPtr++] = _pixelFormat.RGBToColor(r, g, b);
+ rgb[pixelPtr++] = _surface->format.RGBToColor(r, g, b);
}
}
}
@@ -308,7 +294,7 @@ void QTRLEDecoder::decode24(Common::SeekableReadStream *stream, uint32 rowPtr, u
void QTRLEDecoder::decode32(Common::SeekableReadStream *stream, uint32 rowPtr, uint32 linesToChange) {
uint32 pixelPtr = 0;
- OverlayColor *rgb = (OverlayColor *)_surface->pixels;
+ uint32 *rgb = (uint32 *)_surface->pixels;
while (linesToChange--) {
CHECK_STREAM_PTR(2);
@@ -329,11 +315,12 @@ void QTRLEDecoder::decode32(Common::SeekableReadStream *stream, uint32 rowPtr, u
byte r = stream->readByte();
byte g = stream->readByte();
byte b = stream->readByte();
+ uint32 color = _surface->format.ARGBToColor(a, r, g, b);
CHECK_PIXEL_PTR(rleCode);
while (rleCode--)
- rgb[pixelPtr++] = _pixelFormat.ARGBToColor(a, r, g, b);
+ rgb[pixelPtr++] = color;
} else {
CHECK_STREAM_PTR(rleCode * 4);
CHECK_PIXEL_PTR(rleCode);
@@ -344,7 +331,7 @@ void QTRLEDecoder::decode32(Common::SeekableReadStream *stream, uint32 rowPtr, u
byte r = stream->readByte();
byte g = stream->readByte();
byte b = stream->readByte();
- rgb[pixelPtr++] = _pixelFormat.ARGBToColor(a, r, g, b);
+ rgb[pixelPtr++] = _surface->format.ARGBToColor(a, r, g, b);
}
}
}
@@ -354,7 +341,7 @@ void QTRLEDecoder::decode32(Common::SeekableReadStream *stream, uint32 rowPtr, u
}
const Graphics::Surface *QTRLEDecoder::decodeImage(Common::SeekableReadStream *stream) {
- uint16 start_line = 0;
+ uint16 startLine = 0;
uint16 height = _surface->h;
// check if this frame is even supposed to change
@@ -369,44 +356,45 @@ const Graphics::Surface *QTRLEDecoder::decodeImage(Common::SeekableReadStream *s
// if a header is present, fetch additional decoding parameters
if (header & 8) {
- if(stream->size() < 14)
+ if (stream->size() < 14)
return _surface;
- start_line = stream->readUint16BE();
+
+ startLine = stream->readUint16BE();
stream->readUint16BE(); // Unknown
height = stream->readUint16BE();
stream->readUint16BE(); // Unknown
}
- uint32 row_ptr = _surface->w * start_line;
+ uint32 rowPtr = _surface->w * startLine;
switch (_bitsPerPixel) {
- case 1:
- case 33:
- decode1(stream, row_ptr, height);
- break;
- case 2:
- case 34:
- decode2_4(stream, row_ptr, height, 2);
- break;
- case 4:
- case 36:
- decode2_4(stream, row_ptr, height, 4);
- break;
- case 8:
- case 40:
- decode8(stream, row_ptr, height);
- break;
- case 16:
- decode16(stream, row_ptr, height);
- break;
- case 24:
- decode24(stream, row_ptr, height);
- break;
- case 32:
- decode32(stream, row_ptr, height);
- break;
- default:
- error ("Unsupported bits per pixel %d", _bitsPerPixel);
+ case 1:
+ case 33:
+ decode1(stream, rowPtr, height);
+ break;
+ case 2:
+ case 34:
+ decode2_4(stream, rowPtr, height, 2);
+ break;
+ case 4:
+ case 36:
+ decode2_4(stream, rowPtr, height, 4);
+ break;
+ case 8:
+ case 40:
+ decode8(stream, rowPtr, height);
+ break;
+ case 16:
+ decode16(stream, rowPtr, height);
+ break;
+ case 24:
+ decode24(stream, rowPtr, height);
+ break;
+ case 32:
+ decode32(stream, rowPtr, height);
+ break;
+ default:
+ error("Unsupported QTRLE bits per pixel %d", _bitsPerPixel);
}
return _surface;
@@ -417,4 +405,27 @@ QTRLEDecoder::~QTRLEDecoder() {
delete _surface;
}
+Graphics::PixelFormat QTRLEDecoder::getPixelFormat() const {
+ switch (_bitsPerPixel) {
+ case 1:
+ case 33:
+ case 2:
+ case 34:
+ case 4:
+ case 36:
+ case 8:
+ case 40:
+ return Graphics::PixelFormat::createFormatCLUT8();
+ case 16:
+ return Graphics::PixelFormat(2, 5, 5, 5, 0, 10, 5, 0, 0);
+ case 24:
+ case 32:
+ return Graphics::PixelFormat(4, 8, 8, 8, 8, 16, 8, 0, 24);
+ default:
+ error("Unsupported QTRLE bits per pixel %d", _bitsPerPixel);
+ }
+
+ return Graphics::PixelFormat();
+}
+
} // End of namespace Video
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-07 13:54:27 +0000