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ImageData:paste can copy between ImageData of different formats. Resolves issue #1249.

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--HG--
branch : minor
This commit is contained in:
Alex Szpakowski
2017-03-03 22:10:10 -04:00
parent cb9aa857d7
commit 074107b01d
2 changed files with 158 additions and 24 deletions
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src/modules/image/ImageData.cpp
+134 -24
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@@ -83,20 +83,20 @@ void ImageData::getPixel(int x, int y, Pixel &p) const
void ImageData::paste(ImageData *src, int dx, int dy, int sx, int sy, int sw, int sh)
{
if (getFormat() != src->getFormat())
throw love::Exception("ImageData formats must match!");
PixelFormat dstformat = getFormat();
PixelFormat srcformat = src->getFormat();
Lock lock2(src->mutex);
Lock lock1(mutex);
int srcW = src->getWidth();
int srcH = src->getHeight();
int dstW = getWidth();
int dstH = getHeight();
uint8 *s = (uint8 *) src->getData();
uint8 *d = (uint8 *) getData();
size_t pixelsize = getPixelSize();
size_t srcpixelsize = src->getPixelSize();
size_t dstpixelsize = getPixelSize();
// Check bounds; if the data ends up completely out of bounds, get out early.
if (sx >= src->getWidth() || sx + sw < 0 || sy >= src->getHeight() || sy + sh < 0
|| dx >= getWidth() || dx + sw < 0 || dy >= getHeight() || dy + sh < 0)
if (sx >= srcW || sx + sw < 0 || sy >= srcH || sy + sh < 0
|| dx >= dstW || dx + sw < 0 || dy >= dstH || dy + sh < 0)
return;
// Normalize values to the inside of both images.
@@ -125,36 +125,146 @@ void ImageData::paste(ImageData *src, int dx, int dy, int sx, int sy, int sw, in
sy = 0;
}
if (dx + sw > getWidth())
sw = getWidth() - dx;
if (dx + sw > dstW)
sw = dstW - dx;
if (dy + sh > getHeight())
sh = getHeight() - dy;
if (dy + sh > dstH)
sh = dstH - dy;
if (sx + sw > src->getWidth())
sw = src->getWidth() - sx;
if (sx + sw > srcW)
sw = srcW - sx;
if (sy + sh > src->getHeight())
sh = src->getHeight() - sy;
if (sy + sh > srcH)
sh = srcH - sy;
Lock lock2(src->mutex);
Lock lock1(mutex);
uint8 *s = (uint8 *) src->getData();
uint8 *d = (uint8 *) getData();
// If the dimensions match up, copy the entire memory stream in one go
if (sw == getWidth() && getWidth() == src->getWidth()
&& sh == getHeight() && getHeight() == src->getHeight())
if (srcformat == dstformat && (sw == dstW && dstW == srcW && sh == dstH && dstH == srcH))
{
memcpy(d, s, pixelsize * sw * sh);
memcpy(d, s, srcpixelsize * sw * sh);
}
else if (sw > 0)
{
// Otherwise, copy each row individually.
for (int i = 0; i < sh; i++)
{
const uint8 *rowsrc = s + (sx + (i + sy) * src->getWidth()) * pixelsize;
uint8 *rowdst = d + (dx + (i + dy) * getWidth()) * pixelsize;
memcpy(rowdst, rowsrc, pixelsize * sw);
Row rowsrc = {s + (sx + (i + sy) * srcW) * srcpixelsize};
Row rowdst = {d + (dx + (i + dy) * dstW) * dstpixelsize};
if (srcformat == dstformat)
memcpy(rowdst.u8, rowsrc.u8, srcpixelsize * sw);
else if (srcformat == PIXELFORMAT_RGBA8 && dstformat == PIXELFORMAT_RGBA16)
pasteRGBA8toRGBA16(rowsrc, rowdst, sw);
else if (srcformat == PIXELFORMAT_RGBA8 && dstformat == PIXELFORMAT_RGBA16F)
pasteRGBA8toRGBA16F(rowsrc, rowdst, sw);
else if (srcformat == PIXELFORMAT_RGBA8 && dstformat == PIXELFORMAT_RGBA32F)
pasteRGBA8toRGBA32F(rowsrc, rowdst, sw);
else if (srcformat == PIXELFORMAT_RGBA16 && dstformat == PIXELFORMAT_RGBA8)
pasteRGBA16toRGBA8(rowsrc, rowdst, sw);
else if (srcformat == PIXELFORMAT_RGBA16 && dstformat == PIXELFORMAT_RGBA16F)
pasteRGBA16toRGBA16F(rowsrc, rowdst, sw);
else if (srcformat == PIXELFORMAT_RGBA16 && dstformat == PIXELFORMAT_RGBA32F)
pasteRGBA16toRGBA32F(rowsrc, rowdst, sw);
else if (srcformat == PIXELFORMAT_RGBA16F && dstformat == PIXELFORMAT_RGBA8)
pasteRGBA16FtoRGBA8(rowsrc, rowdst, sw);
else if (srcformat == PIXELFORMAT_RGBA16F && dstformat == PIXELFORMAT_RGBA16)
pasteRGBA16FtoRGBA16(rowsrc, rowdst, sw);
else if (srcformat == PIXELFORMAT_RGBA16F && dstformat == PIXELFORMAT_RGBA32F)
pasteRGBA16FtoRGBA32F(rowsrc, rowdst, sw);
else if (srcformat == PIXELFORMAT_RGBA32F && dstformat == PIXELFORMAT_RGBA8)
pasteRGBA32FtoRGBA8(rowsrc, rowdst, sw);
else if (srcformat == PIXELFORMAT_RGBA32F && dstformat == PIXELFORMAT_RGBA16)
pasteRGBA32FtoRGBA16(rowsrc, rowdst, sw);
else if (srcformat == PIXELFORMAT_RGBA32F && dstformat == PIXELFORMAT_RGBA16F)
pasteRGBA32FtoRGBA16F(rowsrc, rowdst, sw);
else
throw love::Exception("Unsupported pixel format combination in ImageData:paste!");
}
}
}
void ImageData::pasteRGBA8toRGBA16(Row src, Row dst, int w)
{
for (int i = 0; i < w * 4; i++)
dst.u16[i] = (uint16) src.u8[i] << 8u;
}
void ImageData::pasteRGBA8toRGBA16F(Row src, Row dst, int w)
{
for (int i = 0; i < w * 4; i++)
dst.f16[i] = floatToHalf(src.u8[i] / 255.0f);
}
void ImageData::pasteRGBA8toRGBA32F(Row src, Row dst, int w)
{
for (int i = 0; i < w * 4; i++)
dst.f32[i] = src.u8[i] / 255.0f;
}
void ImageData::pasteRGBA16toRGBA8(Row src, Row dst, int w)
{
for (int i = 0; i < w * 4; i++)
dst.u8[i] = src.u16[i] >> 8u;
}
void ImageData::pasteRGBA16toRGBA16F(Row src, Row dst, int w)
{
for (int i = 0; i < w * 4; i++)
dst.f16[i] = floatToHalf(src.u16[i] / 65535.0f);
}
void ImageData::pasteRGBA16toRGBA32F(Row src, Row dst, int w)
{
for (int i = 0; i < w * 4; i++)
dst.f32[i] = src.u16[i] / 65535.0f;
}
void ImageData::pasteRGBA16FtoRGBA8(Row src, Row dst, int w)
{
for (int i = 0; i < w * 4; i++)
dst.u8[i] = (uint8) (halfToFloat(src.f16[i]) * 255.0f);
}
void ImageData::pasteRGBA16FtoRGBA16(Row src, Row dst, int w)
{
for (int i = 0; i < w * 4; i++)
dst.u16[i] = (uint16) (halfToFloat(src.f16[i]) * 65535.0f);
}
void ImageData::pasteRGBA16FtoRGBA32F(Row src, Row dst, int w)
{
for (int i = 0; i < w * 4; i++)
dst.f32[i] = halfToFloat(src.f16[i]);
}
void ImageData::pasteRGBA32FtoRGBA8(Row src, Row dst, int w)
{
for (int i = 0; i < w * 4; i++)
dst.u8[i] = (uint8) (src.f32[i] * 255.0f);
}
void ImageData::pasteRGBA32FtoRGBA16(Row src, Row dst, int w)
{
for (int i = 0; i < w * 4; i++)
dst.u16[i] = (uint16) (src.f32[i] * 65535.0f);
}
void ImageData::pasteRGBA32FtoRGBA16F(Row src, Row dst, int w)
{
for (int i = 0; i < w * 4; i++)
dst.f16[i] = (uint16) floatToHalf(src.f32[i]);
}
love::thread::Mutex *ImageData::getMutex() const
{
return mutex;