static void mm_decode_inter(MmContext * s, int half_horiz, int half_vert, const uint8_t *buf, int buf_size) { const int data_ptr = 2 + AV_RL16(&buf[0]); int d, r, y; d = data_ptr; r = 2; y = 0; while(r < data_ptr) { int i, j; int length = buf[r] & 0x7f; int x = buf[r+1] + ((buf[r] & 0x80) << 1); r += 2; if (length==0) { y += x; continue; } for(i=0; i<length; i++) { for(j=0; j<8; j++) { int replace = (buf[r+i] >> (7-j)) & 1; if (replace) { int color = buf[d]; s->frame.data[0][y*s->frame.linesize[0] + x] = color; if (half_horiz) s->frame.data[0][y*s->frame.linesize[0] + x + 1] = color; if (half_vert) { s->frame.data[0][(y+1)*s->frame.linesize[0] + x] = color; if (half_horiz) s->frame.data[0][(y+1)*s->frame.linesize[0] + x + 1] = color; } d++; } x += half_horiz ? 2 : 1; } } r += length; y += half_vert ? 2 : 1; } }