//Here is the actual constructor code used
Deflicker::Deflicker(PClip _child, float _percent, int _lag, float _noise, int _scene, int _lmin, int _lmax, int _border, int _info, int _debug, IScriptEnvironment* env) :
GenericVideoFilter(_child), percent(_percent), lag(_lag), noise(_noise), scene(_scene), lmin(_lmin), lmax(_lmax), border(_border), info(_info), debug(_debug) {
// This is the implementation of the constructor.
// The child clip (source clip) is inherited by the GenericVideoFilter,
// where the following variables gets defined:
// PClip child; // Contains the source clip.
// VideoInfo vi; // Contains videoinfo on the source clip.
if (vi.IsYV12()) // added in v.0.4
isYUY2 = false;
else if (vi.IsYUY2())
isYUY2 = true;
else
env->ThrowError("Deflicker: input to filter must be in YV12 or YUY2!");
range =abs(lag);
if (percent < 0 || percent >100)
env->ThrowError("Deflicker: percent must be from 0 to 100 !");
// else if (percent == 0) range = 0;
// else if (percent == 100) range = 1;
// else if (range <= 0) range = int( 5*log(100/(100-percent)) );
cachecapacity = range*2+2; // with some reserve
cachelist = (int *)malloc(cachecapacity*sizeof(int));
meancache= (int *)malloc(cachecapacity*sizeof(float));
varcache= (int *)malloc(cachecapacity*sizeof(float));
for (int i=0; i<cachecapacity; i++) {
cachelist[i] = -1; // unused, free
}
varnoise = noise*noise;
debugbuf = (char *)malloc(256);
messagebuf = (char *)malloc(64);
// avisynth frame cache
SetCacheHints(CACHE_RANGE,cachecapacity);
fieldbased = vi.IsFieldBased(); // after separatefields
}
Cache::Cache(PClip _child, IScriptEnvironment* env)
: GenericVideoFilter(_child), nextCache(NULL), cache(0), priorCache(NULL), Tick(0)
{
// InitializeCriticalSectionAndSpinCount(&cs_cache_V, 4000);
// InitializeCriticalSectionAndSpinCount(&cs_cache_A, 4000);
h_policy = vi.HasVideo() ? CACHE_GENERIC : CACHE_NOTHING; // Since hints are not used per default, this is to describe the lowest default cache mode.
h_audiopolicy = vi.HasAudio() ? CACHE_AUDIO_NONE : CACHE_AUDIO_NOTHING; // Don't cache audio per default, auto mode.
//h_total_frames = 0; // Hint cache not init'ed
h_span = 0;
protectcount = 0;
samplesize = vi.BytesPerAudioSample();
maxsamplecount = 0;
cache_start = 0;
cache_count = 0;
ac_expected_next = 0;
ac_too_small_count = 0;
ac_currentscore = 20;
minframe = vi.num_frames;
maxframe = -1;
cache_init = 0;
cache_limit = CACHE_SCALE_FACTOR / 2; // Start half way towards 1 buffer
fault_rate = 0;
miss_count = 0x80000000; // Hugh negative
childcost = 0; // Unsupported by child
childaccesscost = 0; // Unsupported by child
// Join all the rest of the caches
env->ManageCache(MC_RegisterCache, this);
// For 2.6 filters ask about desired parent cache parameters
if (child->GetVersion() < 5) {
childthreadmode = CACHE_THREAD_UNSAFE; // 2.5 Default
}
else {
childthreadmode = CACHE_THREAD_CLASS; // 2.6 Default
const int vmode = child->SetCacheHints(CACHE_GETCHILD_CACHE_MODE, h_policy); // Cache ask Child for desired video cache mode
switch (vmode) {
case 0: // Unsupported by child
break;
case CACHE_NOTHING: // Do not cache video.
case CACHE_WINDOW: // Hard protect upto X frames within a range of X from the current frame N.
case CACHE_GENERIC: // LRU cache upto X frames.
case CACHE_FORCE_GENERIC: // LRU cache upto X frames, override any previous CACHE_WINDOW.
// Cache ask Child for desired video cache size
SetCacheHints(vmode, child->SetCacheHints(CACHE_GETCHILD_CACHE_SIZE, h_policy == CACHE_WINDOW ? h_span : cache_init));
break;
default:
env->ThrowError("Cache: Filter returned invalid response to CACHE_GETCHILD_CACHE_MODE. %d", vmode);
break;
}
const int amode = child->SetCacheHints(CACHE_GETCHILD_AUDIO_MODE, h_audiopolicy); // Cache ask Child for desired audio cache mode
switch (amode) {
case 0: // Unsupported by child
break;
case CACHE_AUDIO: // Explicitly do cache audio, X byte cache.
case CACHE_AUDIO_NOTHING: // Explicitly do not cache audio.
case CACHE_AUDIO_NONE: // Audio cache off (auto mode), X byte intial cache.
case CACHE_AUDIO_AUTO: // Audio cache on (auto mode), X byte intial cache.
// Cache ask Child for desired audio cache size
SetCacheHints(amode, child->SetCacheHints(CACHE_GETCHILD_AUDIO_SIZE, maxsamplecount * samplesize));
break;
default:
env->ThrowError("Cache: Filter returned invalid response to CACHE_GETCHILD_AUDIO_MODE. %d", amode);
break;
}
const int cost = child->SetCacheHints(CACHE_GETCHILD_COST, 0); // Cache ask Child for estimated processing cost.
switch (cost) {
case 0: // Unsupported by child
break;
case CACHE_COST_ZERO: // Child response of zero cost (ptr arithmetic only).
case CACHE_COST_UNIT: // Child response of unit cost (less than or equal 1 full frame blit).
case CACHE_COST_LOW: // Child response of light cost. (Fast)
case CACHE_COST_MED: // Child response of medium cost. (Real time)
case CACHE_COST_HI: // Child response of heavy cost. (Slow)
childcost = cost;
break;
default:
env->ThrowError("Cache: Filter returned invalid response to CACHE_GETCHILD_COST. %d", cost);
break;
}
const int thread = child->SetCacheHints(CACHE_GETCHILD_THREAD_MODE, 0); // Cache ask Child for thread safetyness.
switch (thread) {
case 0: // Unsupported by child
break;
case CACHE_THREAD_UNSAFE: // Only 1 thread allowed for all instances. 2.5 filters default!
case CACHE_THREAD_CLASS: // Only 1 thread allowed for each instance. 2.6 filters default!
case CACHE_THREAD_SAFE: // Allow all threads in any instance.
case CACHE_THREAD_OWN: // Safe but limit to 1 thread, internally threaded.
childthreadmode = thread;
break;
default:
env->ThrowError("Cache: Filter returned invalid response to CACHE_GETCHILD_THREAD_MODE. %d", thread);
break;
}
const int access = child->SetCacheHints(CACHE_GETCHILD_ACCESS_COST, 0); // Cache ask Child for preferred access pattern.
switch (access) {
case 0: // Unsupported by child
break;
case CACHE_ACCESS_RAND: // Filter is access order agnostic.
case CACHE_ACCESS_SEQ0: // Filter prefers sequential access (low cost)
case CACHE_ACCESS_SEQ1: // Filter needs sequential access (high cost)
childaccesscost = access;
break;
default:
env->ThrowError("Cache: Filter returned invalid response to CACHE_GETCHILD_ACCESS_COST. %d", access);
break;
}
}
}
