35     uint8_t bitmap[XFACE_PIXELS]; ///< image used internally for decoding  member
40 static int all_same(char *bitmap, int w, int h)  in all_same()  argument
45     val = *bitmap;  in all_same()
47         row = bitmap;  in all_same()
52         bitmap += XFACE_WIDTH;  in all_same()
57 static int all_black(char *bitmap, int w, int h)  in all_black()  argument
62         return (all_black(bitmap, w, h) && all_black(bitmap + w, w, h) &&  in all_black()
63                 all_black(bitmap + XFACE_WIDTH * h, w, h) &&  in all_black()
64                 all_black(bitmap + XFACE_WIDTH * h + w, w, h));  in all_black()
67         return *bitmap || *(bitmap + 1) ||  in all_black()
68                *(bitmap + XFACE_WIDTH) || *(bitmap + XFACE_WIDTH + 1);  in all_black()
72 static int all_white(char *bitmap, int w, int h)  in all_white()  argument
74     return *bitmap == 0 && all_same(bitmap, w, h);  in all_white()
90 static void push_greys(ProbRangesQueue *pq, char *bitmap, int w, int h)  in push_greys()  argument
95         push_greys(pq, bitmap,                       w, h);  in push_greys()
96         push_greys(pq, bitmap + w,                   w, h);  in push_greys()
97         push_greys(pq, bitmap + XFACE_WIDTH * h,     w, h);  in push_greys()
98         push_greys(pq, bitmap + XFACE_WIDTH * h + w, w, h);  in push_greys()
101                  *bitmap +  in push_greys()
102             2 * *(bitmap + 1) +  in push_greys()
103             4 * *(bitmap + XFACE_WIDTH) +  in push_greys()
104             8 * *(bitmap + XFACE_WIDTH + 1);  in push_greys()
109 static void encode_block(char *bitmap, int w, int h, int level, ProbRangesQueue *pq)  in encode_block()  argument
111     if (all_white(bitmap, w, h)) {  in encode_block()
113     } else if (all_black(bitmap, w, h)) {  in encode_block()
115         push_greys(pq, bitmap, w, h);  in encode_block()
121         encode_block(bitmap,                       w, h, level, pq);  in encode_block()
122         encode_block(bitmap + w,                   w, h, level, pq);  in encode_block()
123         encode_block(bitmap + h * XFACE_WIDTH,     w, h, level, pq);  in encode_block()
124         encode_block(bitmap + w + h * XFACE_WIDTH, w, h, level, pq);  in encode_block()
165             xface->bitmap[i++] = (buf[j]>>(7-k))&1;  in xface_encode_frame()
173     memcpy(bitmap_copy, xface->bitmap, XFACE_PIXELS);  in xface_encode_frame()
174     ff_xface_generate_face(xface->bitmap, bitmap_copy);  in xface_encode_frame()
176     encode_block(xface->bitmap,                         16, 16, 0, &pq);  in xface_encode_frame()
177     encode_block(xface->bitmap + 16,                    16, 16, 0, &pq);  in xface_encode_frame()
178     encode_block(xface->bitmap + 32,                    16, 16, 0, &pq);  in xface_encode_frame()
179     encode_block(xface->bitmap + XFACE_WIDTH * 16,      16, 16, 0, &pq);  in xface_encode_frame()
180     encode_block(xface->bitmap + XFACE_WIDTH * 16 + 16, 16, 16, 0, &pq);  in xface_encode_frame()
181     encode_block(xface->bitmap + XFACE_WIDTH * 16 + 32, 16, 16, 0, &pq);  in xface_encode_frame()
182     encode_block(xface->bitmap + XFACE_WIDTH * 32,      16, 16, 0, &pq);  in xface_encode_frame()
183     encode_block(xface->bitmap + XFACE_WIDTH * 32 + 16, 16, 16, 0, &pq);  in xface_encode_frame()
184     encode_block(xface->bitmap + XFACE_WIDTH * 32 + 32, 16, 16, 0, &pq);  in xface_encode_frame()