unsigned short depth[2];
fread(depth, 2, 1, fin);//ERROR
//...
//buffer is a pointer to an array of integers
fread(buffer, 4, data_length, fin);
fread() doesn't read short integers?
Author
I'm reading in lots of BMP files and I want to read the bitdepth but it is in a 2 byte value.
You can, but pay attention to endianness. Your code above will read into the first of the two short integers in the array.
Quote:Original post by ToohrVykActually, his code reads 2 bytes, not 2 shorts.
You can, but pay attention to endianness. Your code above will read into the first of the two short integers in the array.
EDIT: Ignore that, I can't read [smile]
fread(depth, 2, 1, fin);
That reads 2 bytes (2*1), you probably want:
fread(depth, sizeof(short), 2, fin);
Author
I've made a mistake! My unsigned short was not actually an array like I thought it was. Thanks for the quick responses.
For anyone interested in the subject, I found this bmp spec very easy to read:
http://www.fortunecity.com/skyscraper/windows/364/bmpffrmt.html
For anyone interested in the subject, I found this bmp spec very easy to read:
http://www.fortunecity.com/skyscraper/windows/364/bmpffrmt.html
Quote:Original post by goodperiodicalYes it can, that's what the second parameter is.
I want to read a 2 byte value one time and this code generates the error:The second and third parameters in fread() are element size and count respectively so I believe the line is written correctly but fread() cannot read a 2 byte value.error C2664: 'fread' : cannot convert parameter 1 from 'int' to 'void *'
You're passing an int for the first parameter instead of the address of a buffer (E.g. depth in your code).
fread(depth, sizeof(short), 2, fin);
should work fine.
EDIT: Ah, you edited your post [smile]
Author
Quote:Original post by Evil Steve
fread(depth, sizeof(short), 2, fin);
should work fine.
EDIT: Ah, you edited your post [smile]
I know, you beat me to it! Code works fine now. I think that 2 you have there should be a one though. That will read two elements, which would be 4 bytes.
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