// Save a raw image instance into a file
bool save_image(const std::string &dest_filename, LLPointer<LLImageRaw> raw_image, int blocks_size, int precincts_size, int levels, bool reversible, bool output_stats)
{
LLPointer<LLImageFormatted> image = create_image(dest_filename);
// Set the image codestream parameters on output in the case of a j2c image
if (image->getCodec() == IMG_CODEC_J2C)
{
// That method doesn't exist (and likely, doesn't make sense) for any other image file format
// hence the required cryptic cast.
if ((blocks_size != -1) || (precincts_size != -1) || (levels != 0))
{
((LLImageJ2C*)(image.get()))->initEncode(*raw_image, blocks_size, precincts_size, levels);
}
((LLImageJ2C*)(image.get()))->setReversible(reversible);
}
if (!image->encode(raw_image, 0.0f))
{
return false;
}
if (output_stats)
{
output_image_stats(image, dest_filename);
}
return image->save(dest_filename);
}
// Load an image from file and return a raw (decompressed) instance of its data
LLPointer<LLImageRaw> load_image(const std::string &src_filename, int discard_level, int* region, bool output_stats)
{
LLPointer<LLImageFormatted> image = create_image(src_filename);
// This just loads the image file stream into a buffer. No decoding done.
if (!image->load(src_filename))
{
return NULL;
}
if( (image->getComponents() != 3) && (image->getComponents() != 4) )
{
std::cout << "Image files with less than 3 or more than 4 components are not supported\n";
return NULL;
}
if (output_stats)
{
output_image_stats(image, src_filename);
}
LLPointer<LLImageRaw> raw_image = new LLImageRaw;
// Set the image restriction on load in the case of a j2c image
if ((image->getCodec() == IMG_CODEC_J2C) && ((discard_level != -1) || (region != NULL)))
{
// That method doesn't exist (and likely, doesn't make sense) for any other image file format
// hence the required cryptic cast.
((LLImageJ2C*)(image.get()))->initDecode(*raw_image, discard_level, region);
}
if (!image->decode(raw_image, 0.0f))
{
return NULL;
}
return raw_image;
}
// Load an image from file and return a raw (decompressed) instance of its data
LLPointer<LLImageRaw> load_image(const std::string &src_filename, int discard_level, int* region, int load_size, bool output_stats)
{
LLPointer<LLImageFormatted> image = create_image(src_filename);
// We support partial loading only for j2c images
if (image->getCodec() == IMG_CODEC_J2C)
{
// Load the header
if (!image->load(src_filename, 600))
{
return NULL;
}
S32 h = ((LLImageJ2C*)(image.get()))->calcHeaderSize();
S32 d = (load_size > 0 ? ((LLImageJ2C*)(image.get()))->calcDiscardLevelBytes(load_size) : 0);
S8 r = ((LLImageJ2C*)(image.get()))->getRawDiscardLevel();
std::cout << "Merov debug : header = " << h << ", load_size = " << load_size << ", discard level = " << d << ", raw discard level = " << r << std::endl;
for (d = 0; d < MAX_DISCARD_LEVEL; d++)
{
S32 data_size = ((LLImageJ2C*)(image.get()))->calcDataSize(d);
std::cout << "Merov debug : discard_level = " << d << ", data_size = " << data_size << std::endl;
}
if (load_size < 0)
{
load_size = (discard_level != -1 ? ((LLImageJ2C*)(image.get()))->calcDataSize(discard_level) : 0);
}
// Load the requested byte range
if (!image->load(src_filename, load_size))
{
return NULL;
}
}
else
{
// This just loads the image file stream into a buffer. No decoding done.
if (!image->load(src_filename))
{
return NULL;
}
}
if( (image->getComponents() != 3) && (image->getComponents() != 4) )
{
std::cout << "Image files with less than 3 or more than 4 components are not supported\n";
return NULL;
}
if (output_stats)
{
output_image_stats(image, src_filename);
}
LLPointer<LLImageRaw> raw_image = new LLImageRaw;
// Set the image restriction on load in the case of a j2c image
if ((image->getCodec() == IMG_CODEC_J2C) && ((discard_level != -1) || (region != NULL)))
{
// That method doesn't exist (and likely, doesn't make sense) for any other image file format
// hence the required cryptic cast.
((LLImageJ2C*)(image.get()))->initDecode(*raw_image, discard_level, region);
}
if (!image->decode(raw_image, 0.0f))
{
return NULL;
}
return raw_image;
}