Thread: Problem: Allocate an array of structs within a struct.

I'm trying to create a pixel buffer for a render bucket but I can't get my head around the pointers. Or the declaration.
Can anyone help me sort this out?

// I need to allocate this:

Code:

struct pixel {	unsigned char R;
			unsigned char G;
			unsigned char B; };

in this

Code:

struct bucket {	long double max;
			long double min;
			long double factor;
			int max_it;
			int size;
			int xStart;
			int yStart;
			struct pixel *buffer;
			char started;
			char done; };

Access it in another function

Code:

	bucket->buffer[xl+(yl*bucket->size)].R = map(brightness*brightness, 0, 1000, 0, 155);
	bucket->buffer[xl+(yl*bucket->size)].G = map(brightness, 0, 255, 0, 155);
	bucket->buffer[xl+(yl*bucket->size)].B = map(brightness, 0, 255, 0, 255);

So how do I declare and allocate it?

Code:

int main(int argc, char *argv[])
{
	struct bucket bucketlist[buckets_per_frame];
	struct pixel* buffer[pixels_per_bucket];

	for ( i=0 ; i<buckets_per_frame ; i++ )
	{
		for ( j=0 ; j<pixels_per_bucket ; j++ )
		{
			bucketlist[i].buffer[j] = (struct pixel *) malloc(sizeof(struct pixel));
		}
	}
}