int Surface::setFormat(State & state, SDL_Surface * surface){
PixelFormat * interfacePixelFormat = state.getInterface<PixelFormat>("LuaSDL_PixelFormat");
SDL_PixelFormat * format = interfacePixelFormat->get(1);
if (format){
surface->format->format = format->format;
surface->format->palette = format->palette;
surface->format->BitsPerPixel = format->BitsPerPixel;
surface->format->BytesPerPixel = format->BytesPerPixel;
surface->format->Rmask = format->Rmask;
surface->format->Gmask = format->Gmask;
surface->format->Bmask = format->Bmask;
surface->format->Amask = format->Amask;
surface->format->Rloss = format->Rloss;
surface->format->Gloss = format->Gloss;
surface->format->Bloss = format->Bloss;
surface->format->Aloss = format->Aloss;
surface->format->Rshift = format->Rshift;
surface->format->Gshift = format->Gshift;
surface->format->Bshift = format->Bshift;
surface->format->Ashift = format->Ashift;
}
return 0;
}
bool RemoteViewerCore::updatePixelFormat()
{
PixelFormat pxFormat;
m_logWriter.debug(_T("Check pixel format change..."));
{
AutoLock al(&m_pixelFormatLock);
if (!m_isNewPixelFormat)
return false;
m_isNewPixelFormat = false;
pxFormat = m_viewerPixelFormat;
}
int bitsPerPixel = m_viewerPixelFormat.bitsPerPixel;
if (bitsPerPixel != 8 && bitsPerPixel != 16 && bitsPerPixel != 32) {
throw Exception(_T("Only 8, 16 or 32 bits per pixel supported!"));
}
{
AutoLock al(&m_fbLock);
// FIXME: here isn't accept true-colour flag.
// PixelFormats may be equal, if isn't.
if (pxFormat.isEqualTo(&m_frameBuffer.getPixelFormat())) {
return false;
}
if (m_frameBuffer.getBuffer() != 0)
setFbProperties(&m_frameBuffer.getDimension(), &pxFormat);
}
RfbSetPixelFormatClientMessage pixelFormatMessage(&pxFormat);
pixelFormatMessage.send(m_output);
return true;
}
bool WindowsScreenGrabber::getPixelFormatChanged()
{
m_screen.update();
PixelFormat currentPF = m_screen.getPixelFormat();
PixelFormat frameBufferPF = m_workFrameBuffer.getPixelFormat();
return !frameBufferPF.isEqualTo(¤tPF);
}
void WindowRendererSupportGLWin32::setPixelFormat(const DeviceContext* deviceContext, const PixelFormat& pixelFormat) const
{
HDC hdc = static_cast<const DeviceContextWin32*>(deviceContext)->getHDC();
ushort colourBits = pixelFormat.getRedBits() + pixelFormat.getGreenBits() + pixelFormat.getBlueBits();
ushort alphaBits = pixelFormat.getAlphaBits();
ushort depthBits = 24;
ushort stencilBits = 8;
ushort samples = 4;
PIXELFORMATDESCRIPTOR pfd;
memset(&pfd, 0, sizeof(pfd));
pfd.nSize = sizeof(pfd);
pfd.nVersion = 1;
pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.cColorBits = (BYTE)colourBits;
pfd.cAlphaBits = (BYTE)alphaBits;
pfd.cDepthBits = (BYTE)depthBits;
pfd.cStencilBits = (BYTE)stencilBits;
int format = 0;
if(mHasMultisample)
{
vector<int> attribList;
attribList.push_back(WGL_DRAW_TO_WINDOW_ARB); attribList.push_back(GL_TRUE);
attribList.push_back(WGL_SUPPORT_OPENGL_ARB); attribList.push_back(GL_TRUE);
attribList.push_back(WGL_DOUBLE_BUFFER_ARB); attribList.push_back(GL_TRUE);
attribList.push_back(WGL_SAMPLE_BUFFERS_ARB); attribList.push_back(GL_TRUE);
attribList.push_back(WGL_ACCELERATION_ARB); attribList.push_back(WGL_FULL_ACCELERATION_ARB);
attribList.push_back(WGL_COLOR_BITS_ARB); attribList.push_back(colourBits);
attribList.push_back(WGL_ALPHA_BITS_ARB); attribList.push_back(alphaBits);
attribList.push_back(WGL_DEPTH_BITS_ARB); attribList.push_back(depthBits);
attribList.push_back(WGL_STENCIL_BITS_ARB); attribList.push_back(stencilBits);
attribList.push_back(WGL_SAMPLES_ARB); attribList.push_back(samples);
if(mHasHardwareGamma)
{
attribList.push_back(WGL_FRAMEBUFFER_SRGB_CAPABLE_EXT); attribList.push_back(GL_TRUE);
}
attribList.push_back(0);
UINT nformats;
wglChoosePixelFormatARB(hdc, &(attribList[0]), nullptr, 1, &format, &nformats);
}
else
{
format = ChoosePixelFormat(hdc, &pfd);
}
SetPixelFormat(hdc, format, &pfd);
}
bool RGBtoRGBA::supports(const PixelFormat& targetFormat,
const PixelFormat& sourceFormat)
{
if (targetFormat.type() != sourceFormat.type())
return false;
if (targetFormat.semantic() != PixelFormat::RGBA ||
sourceFormat.semantic() != PixelFormat::RGB)
{
return false;
}
return true;
}
void Bitmap::ReformatImage(const PixelFormat& pxf)
{
assert( image );
if ( format == pxf )
return;
// indexed reformat means color quantization
if ( pxf.IsIndexed() )
{
QuantizeImage();
return;
}
// conversion
Bitmap temp(width,height,pxf);
temp.BlitImage(*this,BLIT_COPY);
// swap pointers
delete[] image;
image = temp.image;
temp.image = NULL;
pitch = temp.pitch;
format = pxf;
}
bool WindowsScreenGrabber::getPixelFormatChanged()
{
BMI bmi;
if (!getBMI(&bmi)) {
return false;
}
PixelFormat currentPF;
PixelFormat frameBufferPF = m_workFrameBuffer.getPixelFormat();
fillPixelFormat(¤tPF, &bmi);
if (!frameBufferPF.isEqualTo(¤tPF)) {
return true;
}
return false;
}
void RGBtoRGBA::convert(void* target,
const PixelFormat& targetFormat,
const void* source,
const PixelFormat& sourceFormat,
size_t count)
{
size_t channelSize = targetFormat.channelSize();
size_t targetSize = targetFormat.size();
size_t sourceSize = sourceFormat.size();
while (count--)
{
std::memcpy(target, source, sourceSize);
std::memset((char*) target + sourceSize, 0, channelSize);
target = (char*) target + targetSize;
source = (char*) source + sourceSize;
}
}
Bitmap::Bitmap(int xsize, int ysize, const PixelFormat& pxf)
{
assert( xsize > 0 && ysize > 0 );
width = xsize;
height = ysize;
pitch = width * pxf.GetBytes();
format = pxf;
image = new uint8[height*pitch];
}
void Bitmap::SetImage(int xsize, int ysize, const PixelFormat& pxf, void* i)
{
assert( xsize > 0 && ysize > 0 );
delete[] image;
width = xsize;
height = ysize;
pitch = xsize * pxf.GetBytes();
format = pxf;
image = reinterpret_cast<uint8*>(i);
}
int Surface::convert(State & state, SDL_Surface * surface){
Stack * stack = state.stack;
PixelFormat * interfacePixelFormat = state.getInterface<PixelFormat>("LuaSDL_PixelFormat");
Surface * interfaceSurface = state.getInterface<Surface>("LuaSDL_Surface");
Uint32 flags;
if (stack->is<LUA_TNUMBER>(2)){
flags = stack->to<int>(2);
}else{
flags = 0;
}
SDL_PixelFormat * pf = interfacePixelFormat->get(1);
if (pf){
SDL_Surface * newSurface = SDL_ConvertSurface(surface, pf, flags);
if (newSurface){
interfaceSurface->push(newSurface, true);
return 1;
}
}
return 0;
}
GLenum ConvertToGL( const PixelFormat& format, bool sRGB )
{
switch(format.componentType())
{
case PixelComponent_UInt8:
{
switch(format.semantic())
{
case PixelSemantic_Luminance:
{
if(sRGB)
return GL_SLUMINANCE8;
else
return GL_LUMINANCE8;
}
case PixelSemantic_LuminanceAlpha:
{
if(sRGB)
return GL_SLUMINANCE8_ALPHA8;
else
return GL_LUMINANCE8_ALPHA8;
}
case PixelSemantic_RGB:
{
if(sRGB)
return GL_SRGB8;
else
return GL_RGB8;
}
case PixelSemantic_RGBA:
{
if(sRGB)
return GL_SRGB8_ALPHA8;
else
return GL_RGBA8;
}
default:
;
}
break;
}
case PixelComponent_UInt16:
{
if(format.semantic() == PixelSemantic_Depth)
return GL_DEPTH_COMPONENT16;
break;
}
case PixelComponent_UInt24:
{
if(format.semantic() == PixelSemantic_Depth)
return GL_DEPTH_COMPONENT24;
break;
}
case PixelComponent_UInt32:
{
if(format.semantic() == PixelSemantic_Depth)
return GL_DEPTH_COMPONENT32;
break;
}
case PixelComponent_Float16:
{
switch(format.semantic())
{
case PixelSemantic_Luminance:
{
if(!GLEW_ARB_texture_float)
{
FatalError("GLEW_ARB_texture_float not supported");
break;
}
return GL_LUMINANCE16F_ARB;
}
case PixelSemantic_LuminanceAlpha:
{
if(!GLEW_ARB_texture_float)
{
FatalError("GLEW_ARB_texture_float not supported");
break;
}
return GL_LUMINANCE_ALPHA16F_ARB;
}
case PixelSemantic_RGB:
return GL_RGB16F;
case PixelSemantic_RGBA:
return GL_RGBA16F;
default:
;
}
break;
}
case PixelComponent_Float32:
{
switch(format.semantic())
{
case PixelSemantic_Luminance:
{
if(!GLEW_ARB_texture_float)
{
FatalError("GLEW_ARB_texture_float not supported");
break;
}
return GL_LUMINANCE32F_ARB;
}
case PixelSemantic_LuminanceAlpha:
{
if(!GLEW_ARB_texture_float)
{
FatalError("GLEW_ARB_texture_float not supported");
break;
}
return GL_LUMINANCE_ALPHA32F_ARB;
}
case PixelSemantic_RGB:
return GL_RGB32F;
case PixelSemantic_RGBA:
return GL_RGBA32F;
default:
;
}
break;
}
default:
;
}
FatalError("Pixel format '%s' not supported!", format.asString().c_str());
return 0;
}
bool StreamerPNG::saveBitmap(const Bitmap & bitmap, std::ostream & output) {
volatile int colorType = 0; // volatile is needed because of the setjmp later on.
volatile int transforms = 0;
const PixelFormat & pixelFormat = bitmap.getPixelFormat();
if(pixelFormat == PixelFormat::RGBA) {
colorType = PNG_COLOR_TYPE_RGB_ALPHA;
transforms = PNG_TRANSFORM_IDENTITY;
} else if(pixelFormat == PixelFormat::BGRA) {
colorType = PNG_COLOR_TYPE_RGB_ALPHA;
transforms = PNG_TRANSFORM_BGR;
} else if(pixelFormat == PixelFormat::RGB) {
colorType = PNG_COLOR_TYPE_RGB;
transforms = PNG_TRANSFORM_IDENTITY;
} else if(pixelFormat == PixelFormat::BGR) {
colorType = PNG_COLOR_TYPE_RGB;
transforms = PNG_TRANSFORM_BGR;
} else if(pixelFormat == PixelFormat::MONO) {
colorType = PNG_COLOR_TYPE_GRAY;
transforms = PNG_TRANSFORM_IDENTITY;
} else if(pixelFormat == PixelFormat::MONO_FLOAT) {
Reference<Bitmap> tmp = BitmapUtils::convertBitmap(bitmap, PixelFormat::MONO);
return saveBitmap(*tmp.get(), output);
} else {
WARN("Unable to save PNG file. Unsupported color type.");
return false;
}
// Set up the necessary structures for libpng.
png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, nullptr, nullptr, nullptr);
if (!png_ptr) {
return false;
}
png_infop info_ptr = png_create_info_struct(png_ptr);
if (!info_ptr) {
png_destroy_write_struct(&png_ptr, nullptr);
return false;
}
if (setjmp(png_jmpbuf(png_ptr))) {
png_destroy_write_struct(&png_ptr, &info_ptr);
return false;
}
struct PNGFunctions {
static void writeData(png_structp write_ptr, png_bytep data, png_size_t length) {
std::ostream * out = reinterpret_cast<std::ostream *>(png_get_io_ptr(write_ptr));
out->write(reinterpret_cast<const char*>(data), static_cast<std::streamsize>(length));
}
static void flushData(png_structp flush_ptr) {
std::ostream * out = reinterpret_cast<std::ostream *>(png_get_io_ptr(flush_ptr));
out->flush();
}
};
png_set_write_fn(png_ptr, reinterpret_cast<png_voidp>(&output), PNGFunctions::writeData, PNGFunctions::flushData);
const uint32_t width = bitmap.getWidth();
const uint32_t height = bitmap.getHeight();
png_set_IHDR(png_ptr, info_ptr, width, height, 8, colorType, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
// Write the image.
std::vector<png_bytep> row_pointers;
row_pointers.reserve(height);
const uint8_t bytes = pixelFormat.getBytesPerPixel();
for (uint_fast32_t row = 0; row < height; ++row) {
// Take over rows in the same order.
row_pointers.push_back(reinterpret_cast<png_bytep>(const_cast<uint8_t *>(bitmap.data()) + row * width * bytes));
}
png_set_rows(png_ptr, info_ptr, row_pointers.data());
png_write_png(png_ptr, info_ptr, transforms, nullptr);
// Clean up.
png_destroy_write_struct(&png_ptr, &info_ptr);
return true;
}
int Surface::getFormat(State & state, SDL_Surface * surface){
PixelFormat * interfacePixelFormat = state.getInterface<PixelFormat>("LuaSDL_PixelFormat");
interfacePixelFormat->push(surface->format);
return 1;
}
GLenum convertToGL(const PixelFormat& format, bool sRGB)
{
switch (format.type())
{
case PixelFormat::UINT8:
{
switch (format.semantic())
{
case PixelFormat::L:
{
if (sRGB)
return GL_SLUMINANCE8;
else
return GL_LUMINANCE8;
}
case PixelFormat::LA:
{
if (sRGB)
return GL_SLUMINANCE8_ALPHA8;
else
return GL_LUMINANCE8_ALPHA8;
}
case PixelFormat::RGB:
{
if (sRGB)
return GL_SRGB8;
else
return GL_RGB8;
}
case PixelFormat::RGBA:
{
if (sRGB)
return GL_SRGB8_ALPHA8;
else
return GL_RGBA8;
}
default:
break;
}
break;
}
case PixelFormat::UINT16:
{
if (format.semantic() == PixelFormat::DEPTH)
return GL_DEPTH_COMPONENT16;
break;
}
case PixelFormat::UINT24:
{
if (format.semantic() == PixelFormat::DEPTH)
return GL_DEPTH_COMPONENT24;
break;
}
case PixelFormat::UINT32:
{
if (format.semantic() == PixelFormat::DEPTH)
return GL_DEPTH_COMPONENT32;
break;
}
case PixelFormat::FLOAT16:
{
switch (format.semantic())
{
case PixelFormat::L:
{
if (!GLEW_ARB_texture_float)
{
logError("Half-precision floating point textures not supported; "
"cannot convert pixel format");
return 0;
}
return GL_LUMINANCE16F_ARB;
}
case PixelFormat::LA:
{
if (!GLEW_ARB_texture_float)
{
logError("Half-precision floating point textures not supported; "
"cannot convert pixel format");
return 0;
}
return GL_LUMINANCE_ALPHA16F_ARB;
}
case PixelFormat::RGB:
return GL_RGB16F;
case PixelFormat::RGBA:
return GL_RGBA16F;
default:
break;
}
break;
}
case PixelFormat::FLOAT32:
{
switch (format.semantic())
{
case PixelFormat::L:
{
if (!GLEW_ARB_texture_float)
{
logError("Floating point textures not supported; cannot convert pixel format");
return 0;
}
return GL_LUMINANCE32F_ARB;
}
case PixelFormat::LA:
{
if (!GLEW_ARB_texture_float)
{
logError("Floating point textures not supported; cannot convert pixel format");
return 0;
}
return GL_LUMINANCE_ALPHA32F_ARB;
}
case PixelFormat::RGB:
return GL_RGB32F;
case PixelFormat::RGBA:
return GL_RGBA32F;
default:
break;
}
break;
}
default:
break;
}
logError("No OpenGL equivalent for pixel format %s",
format.asString().c_str());
return 0;
}
PixelFormat Renderbuffer::changePixelFormat(PixelFormat const& pf)
{
PixelFormat ret = getPixelFormat();
if (pf.isRenderable())
{
initStorage(getColorRenderbuffer(), pf.pfcolorcode(), pf.getSamplesCount(), size().width(), size().height());
ret.copyColor(pf);
}
if (pf.matchesDepthStencil())
{
depthstencil = true;
initStorage(getDepthStencilRenderbuffer(), pf.pfdepthstencilcode(), pf.getSamplesCount(), size().width(), size().height());
}
else
{
depthstencil = false;
initStorage(getDepthRenderbuffer(), pf.pfdepthcode(), pf.getSamplesCount(), size().width(), size().height());
initStorage(getStencilRenderbuffer(), pf.pfstencilcode(), pf.getSamplesCount(), size().width(), size().height());
}
ret.setSamplesCount(pf.getSamplesCount());
ret.copyDepthStencil(pf);
return ret;
}
bool Image::read(Stream stream)
{
BytesArray mem;
mem = stream.process();
if (!stream.ok())
return false;
FIMEMORY* fimem = FreeImage_OpenMemory(mem.raw(), mem.size());
if (!fimem)
return false;
FREE_IMAGE_FORMAT fiformat = FreeImage_GetFileTypeFromMemory(fimem);
FIBITMAP* fibit = FreeImage_LoadFromMemory(fiformat, fimem);
FreeImage_CloseMemory(fimem);
if (!fibit)
return false;
//FIBITMAP* fitmp = fibit;
//fibit = FreeImage_ConvertTo32Bits(fitmp);
//FreeImage_Unload(fitmp);
uint64 red_mask = FreeImage_GetRedMask(fibit);
uint64 green_mask = FreeImage_GetGreenMask(fibit);
uint64 blue_mask = FreeImage_GetBlueMask(fibit);
uint64 alpha_mask = 0;
PixelFormat tmpformat;
tmpformat.setDepthBits(0);
tmpformat.setStencilBits(0);
tmpformat.setColorBitsFromMasks(&red_mask, &green_mask, &blue_mask, &alpha_mask);
if (FreeImage_GetBPP(fibit) != tmpformat.bitsPerPixel())
{
alpha_mask = ~(uint32)(red_mask | green_mask | blue_mask);
tmpformat.setColorBitsFromMasks(&red_mask, &green_mask, &blue_mask, &alpha_mask);
}
format = TransferFormat(tmpformat.getRedBits(), tmpformat.getGreenBits(), tmpformat.getBlueBits(), tmpformat.getAlphaBits());
MIRROR_ASSERT(FreeImage_GetBPP(fibit) == format.bitsPerPixel(), "Conversion from FreeImage bitmap to Mirror bitmap failed!\nBits per pixel conversion from "
"FreeImage color masks probably returned bad bits-per-channel values respectivly for red, green and blue channel, as"
" stored inside PixelFormat structure - see PixelFormat::setColorBitsFromMasks for calculations!");
my_size = { FreeImage_GetWidth(fibit), FreeImage_GetHeight(fibit) };
uint32 req_bits = my_size.width()*my_size.height()*format.bitsPerPixel();
pixels.resize(PixelFormat::bitsToFullBytes(req_bits));
const uint32 pitch = FreeImage_GetPitch(fibit);
const uint32 lineSize = FreeImage_GetLine(fibit);
uint32 pixidx = 0;
BYTE* line = FreeImage_GetBits(fibit);
for (uint32 y = 0; y < my_size.height(); ++y, line += pitch)
for (BYTE* pixel = line; pixel < line + lineSize; pixel += format.bytesPerPixel())
{
pixels[pixidx++] = pixel[2]; //red
pixels[pixidx++] = pixel[1]; //green
pixels[pixidx++] = pixel[0]; //blue
if (alpha_mask)
pixels[pixidx++] = pixel[3]; //alpha
}
////transfer pixels from FreeImage to our buffer as raw bits, should be in RGBA order thanks to our new color masks
//FreeImage_ConvertToRawBits(pixels.raw(), fibit, format.bitsPerPixel()*my_size.width(), format.bitsPerPixel(), 0, 0, 0, TRUE);
FreeImage_Unload(fibit);
return true;
}
Reference<Bitmap> StreamerPNG::loadBitmap(std::istream & input) {
char header[8];
input.read(header, 8);
const int is_png = !png_sig_cmp(reinterpret_cast<png_byte *>(header), 0, 8);
if(!is_png) {
WARN("File is not a valid PNG image.");
return nullptr;
}
// Set up the necessary structures for libpng.
png_structp png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, nullptr, nullptr, nullptr);
if(!png_ptr) {
return nullptr;
}
png_infop info_ptr = png_create_info_struct(png_ptr);
if(!info_ptr) {
png_destroy_read_struct(&png_ptr, static_cast<png_infopp>(nullptr), static_cast<png_infopp>(nullptr));
return nullptr;
}
if(setjmp(png_jmpbuf(png_ptr))) {
png_destroy_read_struct(&png_ptr, &info_ptr, static_cast<png_infopp>(nullptr));
return nullptr;
}
struct PNGFunctions {
static void readData(png_structp read_ptr, png_bytep data, png_size_t length) {
std::istream * in = reinterpret_cast<std::istream *>(png_get_io_ptr(read_ptr));
if(in == nullptr || !in->good()) {
png_error(read_ptr, "Error in input stream.");
}
in->read(reinterpret_cast<char *>(data), static_cast<std::streamsize>(length));
if(in->gcount() != static_cast<std::streamsize>(length)) {
png_error(read_ptr, "Requested amount of data could not be extracted from input stream");
}
}
};
png_set_read_fn(png_ptr, reinterpret_cast<png_voidp>(&input), PNGFunctions::readData);
png_set_sig_bytes(png_ptr, 8);
png_read_info(png_ptr, info_ptr);
png_uint_32 width;
png_uint_32 height;
int bit_depth;
int color_type;
png_get_IHDR( png_ptr, info_ptr,
&width, &height,
&bit_depth, &color_type, nullptr, nullptr, nullptr);
PixelFormat pixelFormat = PixelFormat::RGB;
switch(color_type) {
case PNG_COLOR_TYPE_GRAY:
// Convert bpp less than 8 to 8 bits.
if(bit_depth < 8) {
png_set_expand_gray_1_2_4_to_8(png_ptr);
}
pixelFormat = PixelFormat::MONO;
break;
case PNG_COLOR_TYPE_GRAY_ALPHA:
// Convert grayscale with alpha to RGBA.
png_set_expand(png_ptr);
png_set_gray_to_rgb(png_ptr);
pixelFormat = PixelFormat::RGBA;
break;
case PNG_COLOR_TYPE_PALETTE:
// Convert color palette to RGB(A).
png_set_expand(png_ptr);
// Check if the color palette contains transparent colors.
#if PNG_LIBPNG_VER >= 10300
if(png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)){
pixelFormat = PixelFormat::RGBA;
}
#else
if(info_ptr->valid & PNG_INFO_tRNS) {
pixelFormat = PixelFormat::RGBA;
}
#endif
break;
case PNG_COLOR_TYPE_RGB_ALPHA:
pixelFormat = PixelFormat::RGBA;
break;
default:
// Already set to RGB above.
break;
}
// Convert 16 bpp to 8 bits.
if (bit_depth == 16) {
png_set_strip_16(png_ptr);
}
// Create the bitmap to store the data.
Reference<Bitmap> bitmap = new Bitmap(width, height, pixelFormat);
auto row_pointers = new png_bytep[height];
const uint8_t bytes = pixelFormat.getBytesPerPixel();
for (uint_fast32_t row = 0; row < height; ++row) {
// Take over rows in the same order.
row_pointers[row] = reinterpret_cast<png_bytep>(bitmap->data() + row * width * bytes);
}
// This function automatically handles interlacing.
png_read_image(png_ptr, row_pointers);
png_read_end(png_ptr, nullptr);
png_destroy_read_struct(&png_ptr, &info_ptr, static_cast<png_infopp>(nullptr));
png_free_data(png_ptr, info_ptr, PNG_FREE_ALL, -1);
delete [] row_pointers;
return bitmap;
}
std::string stringCast(PixelFormat format)
{
return std::string(stringCast(format.semantic())) + stringCast(format.type());
}
//
// ISDL12Window::setMode
//
// Sets the window size to the specified size and frees the existing primary
// surface before instantiating a new primary surface. This function performs
// no sanity checks on the desired video mode.
//
// NOTE: If a hardware surface is obtained or the surface's screen pitch
// will create cache thrashing (tested by pitch & 511 == 0), a SDL software
// surface will be created and used for drawing video frames. This software
// surface is then blitted to the screen at the end of the frame, prior to
// calling SDL_Flip.
//
bool ISDL12Window::setMode(uint16_t video_width, uint16_t video_height, uint8_t video_bpp,
bool video_fullscreen, bool vsync)
{
uint32_t flags = 0;
if (vsync)
flags |= SDL_HWSURFACE | SDL_DOUBLEBUF;
else
flags |= SDL_SWSURFACE;
if (video_fullscreen)
flags |= SDL_FULLSCREEN;
else
flags |= SDL_RESIZABLE;
if (video_fullscreen && video_bpp == 8)
flags |= SDL_HWPALETTE;
// TODO: check for multicore
flags |= SDL_ASYNCBLIT;
//if (video_fullscreen)
// flags = ((flags & (~SDL_SWSURFACE)) | SDL_HWSURFACE);
#ifdef SDL_GL_SWAP_CONTROL
SDL_GL_SetAttribute(SDL_GL_SWAP_CONTROL, vsync);
#endif
// [SL] SDL_SetVideoMode reinitializes DirectInput if DirectX is being used.
// This interferes with RawWin32Mouse's input handlers so we need to
// disable them prior to reinitalizing DirectInput...
I_PauseMouse();
SDL_Surface* sdl_surface = SDL_SetVideoMode(video_width, video_height, video_bpp, flags);
if (sdl_surface == NULL)
{
I_FatalError("I_SetVideoMode: unable to set video mode %ux%ux%u (%s): %s\n",
video_width, video_height, video_bpp, video_fullscreen ? "fullscreen" : "windowed",
SDL_GetError());
return false;
}
assert(sdl_surface == SDL_GetVideoSurface());
// [SL] ...and re-enable RawWin32Mouse's input handlers after
// DirectInput is reinitalized.
I_ResumeMouse();
PixelFormat format;
I_BuildPixelFormatFromSDLSurface(sdl_surface, &format);
// just in case SDL couldn't set the exact video mode we asked for...
mWidth = sdl_surface->w;
mHeight = sdl_surface->h;
mBitsPerPixel = format.getBitsPerPixel();
mIsFullScreen = (sdl_surface->flags & SDL_FULLSCREEN) == SDL_FULLSCREEN;
mUseVSync = vsync;
if (SDL_MUSTLOCK(sdl_surface))
SDL_LockSurface(sdl_surface); // lock prior to accessing pixel format
delete mSurfaceManager;
bool got_hardware_surface = (sdl_surface->flags & SDL_HWSURFACE) == SDL_HWSURFACE;
bool create_software_surface =
(sdl_surface->pitch & 511) == 0 || // pitch is a multiple of 512 (thrashes the cache)
got_hardware_surface; // drawing directly to hardware surfaces is slower
if (create_software_surface)
mSurfaceManager = new ISDL12SoftwareWindowSurfaceManager(mWidth, mHeight, &format);
else
mSurfaceManager = new ISDL12DirectWindowSurfaceManager(mWidth, mHeight, &format);
assert(mSurfaceManager != NULL);
assert(getPrimarySurface() != NULL);
if (SDL_MUSTLOCK(sdl_surface))
SDL_UnlockSurface(sdl_surface);
mVideoMode = IVideoMode(mWidth, mHeight, mBitsPerPixel, mIsFullScreen);
assert(mWidth >= 0 && mWidth <= MAXWIDTH);
assert(mHeight >= 0 && mHeight <= MAXHEIGHT);
assert(mBitsPerPixel == 8 || mBitsPerPixel == 32);
// Tell argb_t the pixel format
if (format.getBitsPerPixel() == 32)
argb_t::setChannels(format.getAPos(), format.getRPos(), format.getGPos(), format.getBPos());
else
argb_t::setChannels(3, 2, 1, 0);
// [SL] SDL can create SDL_VIDEORESIZE events in response to SDL_SetVideoMode
// and we need to filter those out.
mIgnoreResize = true;
return true;
}