static void qtrle_decode_1bpp(QtrleContext *s, int row_ptr, int lines_to_change)
{
int rle_code;
- int pixel_ptr = 0;
+ int pixel_ptr;
int row_inc = s->frame.linesize[0];
unsigned char pi0, pi1; /* 2 8-pixel values */
unsigned char *rgb = s->frame.data[0];
* would not be counted, so we count one more.
* See: https://ffmpeg.org/trac/ffmpeg/ticket/226
* In the following decoding loop, row_ptr will be the position of the
- * _next_ row. */
- lines_to_change++;
+ * current row. */
+ row_ptr -= row_inc;
+ pixel_ptr = row_ptr;
+ lines_to_change++;
while (lines_to_change) {
skip = bytestream2_get_byte(&s->g);
rle_code = (signed char)bytestream2_get_byte(&s->g);
break;
if(skip & 0x80) {
lines_to_change--;
- pixel_ptr = row_ptr + 2 * (skip & 0x7f);
row_ptr += row_inc;
+ pixel_ptr = row_ptr + 2 * (skip & 0x7f);
} else
pixel_ptr += 2 * skip;
CHECK_PIXEL_PTR(0); /* make sure pixel_ptr is positive */