GIFLIB is a package of portable tools and library routines for working with GIF images.
GIFLIB is a package of portable tools and library routines for working with GIF images.
Questions tagged [giflib]
7 questions
3
votes
0 answers
How to generate animation in C/C++
What is a high-level approach to generating for encoding a series of RGB buffers (from e.g. png files) into an animated gif?
I have been studying giflib but it seems overly complex. It is very low-level and documentation is sparse, especially on…
Jeroen Ooms
- 31,998
- 35
- 134
- 207
3
votes
1 answer
Is giflib 5.1.2 not thread-safe?
I am using giflib, and have discovered that if I open a new file before closing the previous one, all hell breaks loose.
DGifOpen (file A)
DGifSlurp (file A)
DGifOpen (file B)
DGifSlurp (file B) - fails with D_GIF_ERR_READ_FAILED
Which is…
Lilith River
- 16,204
- 2
- 44
- 76
2
votes
1 answer
Heroku deploy error canvas and gif_lib.h
I'm trying to deploy in Heroku and I get the following build log:
-----> Node.js app detected
-----> Creating runtime environment
NPM_CONFIG_LOGLEVEL=error
NPM_CONFIG_PRODUCTION=true
NODE_ENV=production
…
Yafim Simanovsky
- 531
- 7
- 26
1
vote
1 answer
Error when decoding a gif using giflib
I'm attempting to decode .gif files using giflib. The following code leads to a segfault on the final line (the output width/height is correct).
GifFileType* gif = DGifOpenFileName(filename.c_str(), &errCode);
if (gif == NULL) {
std::cout <<…
yhenon
- 4,111
- 1
- 18
- 34
1
vote
0 answers
Apply patch between gif frames
I want to extract gif frames to raw BGRA data, I used giflib to parse format. I've got first frame (I suppose it's like a key frame in video) that looks good and second (it's 15 frames actually, but let's simplify it) that looks like diff frame.…
Tommi
- 3,199
- 1
- 24
- 38
0
votes
1 answer
How do I get the RGB colour data from a GIFLIB SavedImage structure
I'm using GIFLIB to load in a gif file and I want to extract the RGB data from each frame.
I've used DGifSlurp to load in the file but I cant work out exactly how to get the RGB data from the SavedImage structure. Two tests seem to work, though…
user3162134
- 287
- 1
- 10
0
votes
1 answer
Trying to encode a GIF file using giflib
I am given image data and color table I am trying to export it as a single frame GIF using giflib. I looked into the API, but can't get it to work. The program crashes even at the first function:
GifFileType image_out;
int errorCode = 0;
char*…
Vahagn Tumanyan
- 500
- 1
- 13
- 29