}
if (s->version > 1) {
+ int plane_count = 1 + 2*s->chroma_planes + s->transparency;
+ int max_h_slices = AV_CEIL_RSHIFT(avctx->width , s->chroma_h_shift);
+ int max_v_slices = AV_CEIL_RSHIFT(avctx->height, s->chroma_v_shift);
s->num_v_slices = (avctx->width > 352 || avctx->height > 288 || !avctx->slices) ? 2 : 1;
- for (; s->num_v_slices < 9; s->num_v_slices++) {
+
+ s->num_v_slices = FFMIN(s->num_v_slices, max_v_slices);
+
+ for (; s->num_v_slices < 32; s->num_v_slices++) {
for (s->num_h_slices = s->num_v_slices; s->num_h_slices < 2*s->num_v_slices; s->num_h_slices++) {
- if (avctx->slices == s->num_h_slices * s->num_v_slices && avctx->slices <= 64 || !avctx->slices)
+ int maxw = (avctx->width + s->num_h_slices - 1) / s->num_h_slices;
+ int maxh = (avctx->height + s->num_v_slices - 1) / s->num_v_slices;
+ if (s->num_h_slices > max_h_slices || s->num_v_slices > max_v_slices)
+ continue;
+ if (maxw * maxh * (int64_t)(s->bits_per_raw_sample+1) * plane_count > 8<<24)
+ continue;
+ if (avctx->slices == s->num_h_slices * s->num_v_slices && avctx->slices <= MAX_SLICES || !avctx->slices)
goto slices_ok;
}
}