static void gif_put_bits_rev(PutBitContext *s, int n, unsigned int value) { unsigned int bit_buf; int bit_cnt; // printf("put_bits=%d %x\n", n, value); assert(n == 32 || value < (1U << n)); bit_buf = s->bit_buf; bit_cnt = 32 - s->bit_left; /* XXX:lazyness... was = s->bit_cnt; */ // printf("n=%d value=%x cnt=%d buf=%x\n", n, value, bit_cnt, bit_buf); /* XXX: optimize */ if (n < (32-bit_cnt)) { bit_buf |= value << (bit_cnt); bit_cnt+=n; } else { bit_buf |= value << (bit_cnt); *s->buf_ptr = bit_buf & 0xff; s->buf_ptr[1] = (bit_buf >> 8) & 0xff; s->buf_ptr[2] = (bit_buf >> 16) & 0xff; s->buf_ptr[3] = (bit_buf >> 24) & 0xff; //printf("bitbuf = %08x\n", bit_buf); s->buf_ptr+=4; if (s->buf_ptr >= s->buf_end) puts("bit buffer overflow !!"); // should never happen ! who got rid of the callback ??? // flush_buffer_rev(s); bit_cnt=bit_cnt + n - 32; if (bit_cnt == 0) { bit_buf = 0; } else { bit_buf = value >> (n - bit_cnt); } } s->bit_buf = bit_buf; s->bit_left = 32 - bit_cnt; }