PVideoFrame __stdcall Cache::GetFrame(int n, IScriptEnvironment* env)
{
// :FIXME: Need a better model to find the 1st cache in the getframe chain
// :FIXME: When a host hits us from multiple threads this is totally inadequate
if (cacheDepth == 0) InterlockedIncrement(&Clock);
Tick = Clock;
n = min(vi.num_frames-1, max(0, n)); // Inserted to avoid requests beyond framerange.
__asm {emms} // Protection from rogue filter authors
if (h_policy == CACHE_NOTHING) { // don't want a cache. Typically filters that only ever seek forward.
__asm mov ebx,ebx // Hack! prevent compiler from trusting ebx contents across call
return childGetFrame(n, env);
}
PVideoFrame __stdcall Cache::GetFrame(int n, IScriptEnvironment* env)
{
if (cacheDepth == 0) Clock+=1;
Tick = Clock;
n = std::min(vi.num_frames-1, std::max(0,n)); // Inserted to avoid requests beyond framerange.
#ifdef ENABLE_INLINE_ASSEMBLY_MMX_SSE
__asm {emms} // Protection from rogue filter authors
#endif // ENABLE_INLINE_ASSEMBLY_MMX_SSE
if (h_policy == CACHE_NOTHING) { // don't want a cache. Typically filters that only ever seek forward.
#ifdef ENABLE_INLINE_ASSEMBLY_MMX_SSE
__asm mov ebx,ebx // Hack! prevent compiler from trusting ebx contents across call
#endif // ENABLE_INLINE_ASSEMBLY_MMX_SSE
return childGetFrame(n, env);
}