av_memcpy_backptr(dest, back, size2);
dest += size2;
} else {
- int finish;
- size = ((opcode & 0x1f) << 2) + 4;
-
- finish = size > 0x70;
- if (finish)
- size = opcode & 3;
+ int finish = opcode >= 0xfc;
+ size = finish ? opcode & 3 : ((opcode & 0x1f) << 2) + 4;
memcpy(dest, src, size); dest += size; src += size;
if (finish)
line_inc = stride - width;
index = y * stride + x;
current_x = x;
- while((pixel_count--) && (index < s->frame_size)) {
-
- /* don't do a memcpy() here; keyframes generally copy an entire
- * frame of data and the stride needs to be accounted for */
- palette_plane[index++] = *pixel_buffer++;
+ while(pixel_count && (index < s->frame_size)) {
+ int count = FFMIN(pixel_count, width - current_x);
+ memcpy(palette_plane + index, pixel_buffer, count);
+ pixel_count -= count;
+ index += count;
+ pixel_buffer += count;
+ current_x += count;
- current_x++;
if (current_x >= width) {
index += line_inc;
current_x = 0;
curframe_x = x;
prevframe_index = (y + motion_y) * stride + x + motion_x;
prevframe_x = x + motion_x;
- while((pixel_count--) && (curframe_index < s->frame_size)) {
+ while(pixel_count && (curframe_index < s->frame_size)) {
+ int count = FFMIN3(pixel_count, width - curframe_x, width - prevframe_x);
- palette_plane[curframe_index++] =
- prev_palette_plane[prevframe_index++];
+ memcpy(palette_plane + curframe_index, prev_palette_plane + prevframe_index, count);
+ pixel_count -= count;
+ curframe_index += count;
+ prevframe_index += count;
+ curframe_x += count;
+ prevframe_x += count;
- curframe_x++;
if (curframe_x >= width) {
curframe_index += line_inc;
curframe_x = 0;
}
- prevframe_x++;
if (prevframe_x >= width) {
prevframe_index += line_inc;
prevframe_x = 0;