Lines Matching defs:bpp
29 * @param bpp Bytes per pixel
33 static int count_pixels(const uint8_t *start, int len, int bpp, int same)
38 for(pos = start + bpp; count < FFMIN(127, len); pos += bpp, count ++) {
39 if(same != !memcmp(pos-bpp, pos, bpp)) {
41 /* if bpp == 1, then 0 1 1 0 is more efficiently encoded as a single
42 * raw block of pixels. for larger bpp, RLE is as good or better */
43 if(bpp == 1 && count + 1 < FFMIN(127, len) && *pos != *(pos+1))
57 int ff_rle_encode(uint8_t *outbuf, int out_size, const uint8_t *ptr , int bpp, int w,
65 if((count = count_pixels(ptr, w-x, bpp, 1)) > 1) {
66 if(out + bpp + 1 > outbuf + out_size) return -1;
68 memcpy(out, ptr, bpp);
69 out += bpp;
72 count = count_pixels(ptr, w-x, bpp, 0);
73 if(out + bpp*count >= outbuf + out_size) return -1;
76 memcpy(out, ptr, bpp * count);
77 out += bpp * count;
80 ptr += count * bpp;