static int loco_decode_plane(LOCOContext *l, uint8_t *data, int width, int height, int stride, const uint8_t *buf, int buf_size, int step) { RICEContext rc; int val; int i, j; if(buf_size<=0) return -1; init_get_bits8(&rc.gb, buf, buf_size); rc.save = 0; rc.run = 0; rc.run2 = 0; rc.lossy = l->lossy; rc.sum = 8; rc.count = 1; /* restore top left pixel */ val = loco_get_rice(&rc); data[0] = 128 + val; /* restore top line */ for (i = 1; i < width; i++) { val = loco_get_rice(&rc); data[i * step] = data[i * step - step] + val; } data += stride; for (j = 1; j < height; j++) { /* restore left column */ val = loco_get_rice(&rc); data[0] = data[-stride] + val; /* restore all other pixels */ for (i = 1; i < width; i++) { val = loco_get_rice(&rc); data[i * step] = loco_predict(&data[i * step], stride, step) + val; } data += stride; } return (get_bits_count(&rc.gb) + 7) >> 3; }