libpng

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Why do I have a compatibility version issue using libpng with Xcode?

I\'m having trouble using libpng with Xcode 4.2 on OS X 10.7.1. My program fails to launch with the error:[详细]

2023-04-11 14:38 分类：问答
How to set a pixel as transparent for 8-bit pngs when encoding with libpng?

I\'m trying to mark pixels as transparent when encoding rgb data to 8-bit png image (palette) using libpng. If I create a separate alpha channel in this case, the alpha channel is getting ignored. Is[详细]

2023-04-10 04:10 分类：问答
Convert raw image using open-source library with permissive license

I need to convert a raw, rgb32-formatted image to a PNG with a library (written in, in order of preference, Java, C, C++) having a permissive (e.g. BSD or Apache) license.[详细]

2023-03-31 16:17 分类：问答
cmake hierarchy zlib, libpng and my own app

I\'m trying to create a CMake hierarchy for an application that uses libpng. Libpng requires zlib. Since a CMakeLists.txt is distributed with both zlib and libpng my first idea was to make the follow[详细]

2023-03-23 16:14 分类：问答
libpng size of png

My program reads from a data stream of ind开发者_如何学编程eterminate length. When it reads a PNG file it needs to store it for later and not decode it. Does libpng provide any function for providing[详细]

2023-02-28 00:38 分类：问答
Compile a C program with libpng on Mac OS X

I have a little utility I wrote in C that uses libpng.Under linux, I just install libpng-dev and do \"gcc myapp.c /usr/lib/libpng.so -o myapp\".In Mac OS X, I have the Xcode tools installed, which I b[详细]

2023-02-14 12:34 分类：问答
Using libpng to "split" an image into segments

I\'m trying to use libpng to split an image into different chunks. The reason being I can\'t load a texture larger than 512x512 on the hardware I\'m working on currently. I accomplished this before wi[详细]

2023-02-07 05:49 分类：问答
Find out png color type using png++

I\'m using png++, which is working ok, but you need to set th开发者_运维技巧e pixel type as a template parameter:[详细]

2023-02-05 13:55 分类：问答
'libpng', converting a PNG file from grayscale to RGB (to just one of the channels)

I have a piece of source code that reads and writes images to PNG files. However, it only writes the images as grayscale, precisely just black and white.[详细]

2023-02-01 21:13 分类：问答
PNG++ Read Pixel Color Values

How do I read the pixel color values in a png with png++? I dont see any way of reading values in the documentat开发者_开发百科ion. I need to get all the values rgba seperately and append them to a ch[详细]

2023-01-29 19:07 分类：问答