本文整理汇总了C++中ImageReader::getWidth方法的典型用法代码示例。如果您正苦于以下问题：C++ ImageReader::getWidth方法的具体用法？C++ ImageReader::getWidth怎么用？C++ ImageReader::getWidth使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类ImageReader的用法示例。
在下文中一共展示了ImageReader::getWidth方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: run
int ForceRGBCommand::run(const char** args, unsigned int numArgs)
{
if ( numArgs < 2 ) {
fprintf(stderr, "Usage: ImageTool forcergb <input> <output> [-filequality 0-100] [-pad N,N,N]\n");
fprintf(stderr, "\te.g. ImageTool forcergb input.jpg output.jpg\n");
return IMAGECORE_INVALID_USAGE;
}
int ret = open(args[0], args[1]);
if (ret != IMAGECORE_SUCCESS) {
return ret;
}
// Defaults
unsigned int compressionQuality = 75;
// Optional args
unsigned int numOptional = numArgs - 2;
if ( numOptional > 0 ) {
unsigned int numPairs = numOptional / 2;
for ( unsigned int i = 0; i < numPairs; i++ ) {
const char* argName = args[2 + i * 2 + 0];
const char* argValue = args[2 + i * 2 + 1];
if( strcmp(argName, "-filequality") == 0 ) {
compressionQuality = clamp(0, 100, atoi(argValue));
} else if( strcmp(argName, "-pad") == 0 ) {
int ret = populateBuckets(argValue);
if (ret != IMAGECORE_SUCCESS) {
return ret;
}
}
}
}
ImageReader* reader = ImageReader::create(m_Source);
if( reader == NULL ) {
fprintf(stderr, "error: unknown or corrupt image format for '%s'\n", m_InputFilePath);
return IMAGECORE_INVALID_FORMAT;
}
EImageFormat outputFormat = ImageWriter::formatFromExtension(args[1], reader->getFormat());
unsigned int colorProfileSize = 0;
reader->getColorProfile(colorProfileSize);
if( colorProfileSize != 0 && reader->getFormat() == kImageFormat_JPEG ) {
reader->setReadOptions(ImageReader::kReadOption_ApplyColorProfile);
ImageRGBA* image = ImageRGBA::create(reader->getWidth(), reader->getHeight());
if( reader->readImage(image) ) {
ImageWriter* writer = ImageWriter::createWithFormat(kImageFormat_JPEG, m_Output);
if (writer == NULL) {
fprintf(stderr, "error: unable to create ImageWriter\n");
return IMAGECORE_OUT_OF_MEMORY;
}
writer->setWriteOptions(ImageWriter::kWriteOption_WriteDefaultColorProfile);
writer->setSourceReader(reader);
writer->setQuality(compressionQuality);
if( !writer->writeImage(image) ) {
ret = IMAGECORE_WRITE_ERROR;
}
delete writer;
} else {
fprintf(stderr, "error unable to read input image");
ret = IMAGECORE_READ_ERROR;
}
delete image;
} else {
ImageWriter* imageWriter = ImageWriter::createWithFormat(outputFormat, m_Output);
unsigned int writeOptions = 0;
writeOptions |= ImageWriter::kWriteOption_WriteExifOrientation;
writeOptions |= ImageWriter::kWriteOption_WriteDefaultColorProfile;
if( imageWriter != NULL ) {
imageWriter->setWriteOptions(writeOptions);
if( imageWriter->copyLossless(reader) ) {
ret = IMAGECORE_SUCCESS;
} else {
fprintf(stderr, "error: unable to perform lossless copy.\n");
ret = IMAGECORE_INVALID_OPERATION;
}
delete imageWriter;
}
}
delete reader;
reader = NULL;
close();
return ret;
}示例2: glActiveTexture
void LoadTextureAMT::processGPU_Texture2D()
{
ImageReader* reader = m_imageReaders[0];
if(!reader)
{
return;
}
glActiveTexture(GL_TEXTURE0);
glGenTextures(1, &m_textureId);
glBindTexture(m_target, m_textureId);
int levels;
if(m_loadMipmaps)
{
levels = reader->getLevelAmount();
if(levels == 1)
{
// If need mipmaps and image has only base level, set number of mipmap levels to generate
levels = gmath::imageLevelCount(reader->getWidth(0), reader->getHeight(0), 1);
}
}
else
{
levels = 1;
}
glTexStorage2D(m_target, levels, m_imageGLFormat, reader->getWidth(0), reader->getHeight(0));
for(int i = 0; i < reader->getLevelAmount(); i++)
{
if(reader->isCompressedFormat())
{
glCompressedTexSubImage2D(m_target, i, 0, 0, reader->getWidth(i), reader->getHeight(i), reader->getFormat(), reader->getLevelSize(i), reader->getData(i));
}
else
{
glTexSubImage2D(m_target, i, 0, 0, reader->getWidth(i), reader->getHeight(i), reader->getFormat(), GL_UNSIGNED_BYTE, reader->getData(i));
}
}
glTexParameteri(m_target, GL_TEXTURE_BASE_LEVEL, 0);
if((reader->getLevelAmount() == 1) && m_loadMipmaps)
{
glGenerateMipmap(m_target);
}
if(m_loadMipmaps)
{
glTexParameteri(m_target, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glTexParameteri(m_target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
}
else
{
glTexParameteri(m_target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(m_target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(m_target, GL_TEXTURE_MAX_LEVEL, 0);
}
// Anisotropy filtering
float maximumAnistropy;
glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &maximumAnistropy);
glTexParameterf(m_target, GL_TEXTURE_MAX_ANISOTROPY_EXT, maximumAnistropy);
glBindTexture(m_target, 0);
utils::deleteAndNull(reader);
m_imageReaders[0] = nullptr;
m_context->m_target = m_target;
m_context->m_textureId = m_textureId;
}示例3: CTextureResource
C2DTextureResource::C2DTextureResource(const std::string &filePath, const int flags) : CTextureResource(filePath)
{
GLenum iFormat;
int levels;
//uint32_t size;
ImageReader *img;
m_textureId = 0;
m_target = GL_TEXTURE_2D;
m_type = ETT_TEX2D;
// Fail loading if given extension is not supported.
if((img = getImageFileByExtension(filePath)) == 0) { return; }
// Fail loading if loaded file was invalid.
if(!img->isValid()) { return; }
iFormat = img->getOpenGLInternalFormat(flags);
glActiveTexture(GL_TEXTURE0);
glGenTextures(1, &m_textureId);
glBindTexture(m_target, m_textureId);
if(flags & ETF_MIPMAPS)
{
levels = img->getLevelAmount();
if(levels == 1)
{
// If need mipmaps and image has only base level, set number of mipmap levels to generate
levels = gmath::imageLevelCount(img->getWidth(0), img->getHeight(0), 1);
}
}
else
{
levels = 1;
}
glTexStorage2D(m_target, levels, iFormat, img->getWidth(0), img->getHeight(0));
for(int i = 0; i < img->getLevelAmount(); i++)
{
if(img->isCompressedFormat())
{
glCompressedTexSubImage2D(m_target, i, 0, 0, img->getWidth(i), img->getHeight(i), img->getFormat(), img->getLevelSize(i), img->getData(i));
}
else
{
glTexSubImage2D(m_target, i, 0, 0, img->getWidth(i), img->getHeight(i), img->getFormat(), GL_UNSIGNED_BYTE, img->getData(i));
}
}
glTexParameteri(m_target, GL_TEXTURE_BASE_LEVEL, 0);
if((img->getLevelAmount() == 1) && (flags & ETF_MIPMAPS))
{
glGenerateMipmap(m_target);
}
if(flags & ETF_MIPMAPS)
{
glTexParameteri(m_target, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glTexParameteri(m_target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
}
else
{
glTexParameteri(m_target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(m_target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(m_target, GL_TEXTURE_MAX_LEVEL, 0);
}
// Anisotropy filtering
float maximumAnistropy;
glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &maximumAnistropy);
glTexParameterf(m_target, GL_TEXTURE_MAX_ANISOTROPY_EXT, maximumAnistropy);
//size = approxSize(iFormat, img->getXBlocks(0), img->getYBlocks(0), 1, flags & ETF_MIPMAPS);
glBindTexture(m_target, 0);
delete img;
m_loaded = true;
}