| /* |
| * Quality Control Interfaces |
| * |
| * Copyright 2010 Maarten Lankhorst for CodeWeavers |
| * |
| * rendering qos functions based on, the original can be found at |
| * gstreamer/libs/gst/base/gstbasesink.c which has copyright notice: |
| * |
| * Copyright (C) 2005-2007 Wim Taymans <wim.taymans@gmail.com> |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA |
| */ |
| |
| #define COBJMACROS |
| |
| #include "dshow.h" |
| #include "wine/strmbase.h" |
| #include "strmbase_private.h" |
| |
| #include "uuids.h" |
| #include "wine/debug.h" |
| |
| #include <assert.h> |
| |
| WINE_DEFAULT_DEBUG_CHANNEL(strmbase_qc); |
| |
| HRESULT QualityControlImpl_Create(IPin *input, IBaseFilter *self, QualityControlImpl **ppv) { |
| QualityControlImpl *This; |
| *ppv = HeapAlloc(GetProcessHeap(),0,sizeof(QualityControlImpl)); |
| if (!*ppv) |
| return E_OUTOFMEMORY; |
| This = *ppv; |
| This->input = input; |
| This->self = self; |
| This->tonotify = NULL; |
| This->clock = NULL; |
| return S_OK; |
| } |
| |
| void QualityControlImpl_Destroy(QualityControlImpl *This) |
| { |
| HeapFree(GetProcessHeap(),0,This); |
| } |
| |
| HRESULT WINAPI QualityControlImpl_QueryInterface(IQualityControl *iface, REFIID riid, void **ppv) { |
| QualityControlImpl *This = (QualityControlImpl*)iface; |
| return IBaseFilter_QueryInterface(This->self, riid, ppv); |
| } |
| |
| ULONG WINAPI QualityControlImpl_AddRef(IQualityControl *iface) { |
| QualityControlImpl *This = (QualityControlImpl*)iface; |
| return IBaseFilter_AddRef(This->self); |
| } |
| |
| ULONG WINAPI QualityControlImpl_Release(IQualityControl *iface) { |
| QualityControlImpl *This = (QualityControlImpl*)iface; |
| return IBaseFilter_Release(This->self); |
| } |
| |
| HRESULT WINAPI QualityControlImpl_Notify(IQualityControl *iface, IBaseFilter *sender, Quality qm) { |
| HRESULT hr = S_FALSE; |
| QualityControlImpl *This = (QualityControlImpl*)iface; |
| if (This->tonotify) |
| return IQualityControl_Notify(This->tonotify, This->self, qm); |
| if (This->input) { |
| IPin *to = NULL; |
| IPin_ConnectedTo(This->input, &to); |
| if (to) { |
| IQualityControl *qc = NULL; |
| IPin_QueryInterface(to, &IID_IQualityControl, (void**)&qc); |
| if (qc) { |
| hr = IQualityControl_Notify(qc, This->self, qm); |
| IQualityControl_Release(qc); |
| } |
| IPin_Release(to); |
| } |
| } |
| return hr; |
| } |
| |
| HRESULT WINAPI QualityControlImpl_SetSink(IQualityControl *iface, IQualityControl *tonotify) { |
| QualityControlImpl *This = (QualityControlImpl*)iface; |
| This->tonotify = tonotify; |
| return S_OK; |
| } |
| |
| /* Macros copied from gstreamer, weighted average between old average and new ones */ |
| #define DO_RUNNING_AVG(avg,val,size) (((val) + ((size)-1) * (avg)) / (size)) |
| |
| /* generic running average, this has a neutral window size */ |
| #define UPDATE_RUNNING_AVG(avg,val) DO_RUNNING_AVG(avg,val,8) |
| |
| /* the windows for these running averages are experimentally obtained. |
| * possitive values get averaged more while negative values use a small |
| * window so we can react faster to badness. */ |
| #define UPDATE_RUNNING_AVG_P(avg,val) DO_RUNNING_AVG(avg,val,16) |
| #define UPDATE_RUNNING_AVG_N(avg,val) DO_RUNNING_AVG(avg,val,4) |
| |
| void QualityControlRender_Start(QualityControlImpl *This, REFERENCE_TIME tStart) { |
| This->avg_render = This->last_in_time = This->last_left = This->avg_duration = This->avg_pt = -1; |
| This->clockstart = tStart; |
| This->avg_rate = -1.0; |
| This->rendered = This->dropped = 0; |
| This->is_dropped = FALSE; |
| This->qos_handled = TRUE; /* Lie that will be corrected on first adjustment */ |
| } |
| |
| |
| void QualityControlRender_SetClock(QualityControlImpl *This, IReferenceClock *clock) { |
| This->clock = clock; |
| } |
| |
| static BOOL QualityControlRender_IsLate(QualityControlImpl *This, REFERENCE_TIME jitter, |
| REFERENCE_TIME start, REFERENCE_TIME stop) |
| { |
| REFERENCE_TIME max_lateness = 200000; |
| |
| /* we can add a valid stop time */ |
| if (stop >= start) |
| max_lateness += stop; |
| else |
| max_lateness += start; |
| |
| /* if the jitter bigger than duration and lateness we are too late */ |
| if (start + jitter > max_lateness) { |
| WARN("buffer is too late %i > %i\n", (int)((start + jitter)/10000), (int)(max_lateness/10000)); |
| /* !!emergency!!, if we did not receive anything valid for more than a |
| * second, render it anyway so the user sees something */ |
| if (This->last_in_time < 0 || |
| start - This->last_in_time < 10000000) |
| return TRUE; |
| FIXME("A lot of buffers are being dropped.\n"); |
| FIXME("There may be a timestamping problem, or this computer is too slow.\n"); |
| } |
| This->last_in_time = start; |
| return FALSE; |
| } |
| |
| HRESULT QualityControlRender_WaitFor(QualityControlImpl *This, IMediaSample *sample, HANDLE ev) { |
| REFERENCE_TIME start = -1, stop = -1, jitter = 0; |
| This->current_rstart = This->current_rstop = -1; |
| This->current_jitter = 0; |
| if (!This->clock || FAILED(IMediaSample_GetTime(sample, &start, &stop))) |
| return S_OK; |
| |
| if (start >= 0) { |
| REFERENCE_TIME now; |
| IReferenceClock_GetTime(This->clock, &now); |
| now -= This->clockstart; |
| |
| jitter = now - start; |
| if (jitter <= -10000) { |
| DWORD_PTR cookie; |
| IReferenceClock_AdviseTime(This->clock, This->clockstart, start, (HEVENT)ev, &cookie); |
| WaitForSingleObject(ev, INFINITE); |
| IReferenceClock_Unadvise(This->clock, cookie); |
| } |
| } |
| else |
| start = stop = -1; |
| This->current_rstart = start; |
| This->current_rstop = stop > start ? stop : start; |
| This->current_jitter = jitter; |
| This->is_dropped = QualityControlRender_IsLate(This, jitter, start, stop); |
| TRACE("Dropped: %i %i %i %i\n", This->is_dropped, (int)(start/10000), (int)(stop/10000), (int)(jitter / 10000)); |
| if (This->is_dropped) { |
| This->dropped++; |
| if (!This->qos_handled) |
| return S_FALSE; |
| } else |
| This->rendered++; |
| return S_OK; |
| } |
| |
| void QualityControlRender_DoQOS(QualityControlImpl *priv) |
| { |
| REFERENCE_TIME start, stop, jitter, pt, entered, left, duration; |
| double rate; |
| |
| if (!priv->clock || priv->current_rstart < 0) |
| return; |
| |
| start = priv->current_rstart; |
| stop = priv->current_rstop; |
| jitter = priv->current_jitter; |
| |
| if (jitter < 0) { |
| /* this is the time the buffer entered the sink */ |
| if (start < -jitter) |
| entered = 0; |
| else |
| entered = start + jitter; |
| left = start; |
| } else { |
| /* this is the time the buffer entered the sink */ |
| entered = start + jitter; |
| /* this is the time the buffer left the sink */ |
| left = start + jitter; |
| } |
| |
| /* calculate duration of the buffer */ |
| if (stop >= start) |
| duration = stop - start; |
| else |
| duration = 0; |
| |
| /* if we have the time when the last buffer left us, calculate |
| * processing time */ |
| if (priv->last_left >= 0) { |
| if (entered > priv->last_left) { |
| pt = entered - priv->last_left; |
| } else { |
| pt = 0; |
| } |
| } else { |
| pt = priv->avg_pt; |
| } |
| |
| #define XTIME(u) (int)(u/10000000), (int)((u / 10000)%1000) |
| TRACE("start: %u.%03u, entered %u.%03u, left %u.%03u, pt: %u.%03u, " |
| "duration %u.%03u, jitter %u.%03u\n", XTIME(start), XTIME(entered), |
| XTIME(left), XTIME(pt), XTIME(duration), XTIME(jitter)); |
| |
| TRACE("avg_duration: %u.%03u, avg_pt: %u.%03u, avg_rate: %g\n", |
| XTIME(priv->avg_duration), XTIME(priv->avg_pt), priv->avg_rate); |
| #undef XTIME |
| |
| /* collect running averages. for first observations, we copy the |
| * values */ |
| if (priv->avg_duration < 0) |
| priv->avg_duration = duration; |
| else |
| priv->avg_duration = UPDATE_RUNNING_AVG (priv->avg_duration, duration); |
| |
| if (priv->avg_pt < 0) |
| priv->avg_pt = pt; |
| else |
| priv->avg_pt = UPDATE_RUNNING_AVG (priv->avg_pt, pt); |
| |
| if (priv->avg_duration != 0) |
| rate = |
| (double)priv->avg_pt / |
| (double)priv->avg_duration; |
| else |
| rate = 0.0; |
| |
| if (priv->last_left >= 0) { |
| if (priv->is_dropped || priv->avg_rate < 0.0) { |
| priv->avg_rate = rate; |
| } else { |
| if (rate > 1.0) |
| priv->avg_rate = UPDATE_RUNNING_AVG_N (priv->avg_rate, rate); |
| else |
| priv->avg_rate = UPDATE_RUNNING_AVG_P (priv->avg_rate, rate); |
| } |
| } |
| |
| if (priv->avg_rate >= 0.0) { |
| HRESULT hr; |
| Quality q; |
| /* if we have a valid rate, start sending QoS messages */ |
| if (priv->current_jitter < 0) { |
| /* make sure we never go below 0 when adding the jitter to the |
| * timestamp. */ |
| if (priv->current_rstart < -priv->current_jitter) |
| priv->current_jitter = -priv->current_rstart; |
| } |
| else |
| priv->current_jitter += (priv->current_rstop - priv->current_rstart); |
| q.Type = (jitter > 0 ? Famine : Flood); |
| q.Proportion = (LONG)(1000. / priv->avg_rate); |
| if (q.Proportion < 200) |
| q.Proportion = 200; |
| else if (q.Proportion > 5000) |
| q.Proportion = 5000; |
| q.Late = priv->current_jitter; |
| q.TimeStamp = priv->current_rstart; |
| TRACE("Late: %i from %i, rate: %g\n", (int)(q.Late/10000), (int)(q.TimeStamp/10000), 1./priv->avg_rate); |
| hr = IQualityControl_Notify((IQualityControl *)priv, priv->self, q); |
| priv->qos_handled = hr == S_OK; |
| } |
| |
| /* record when this buffer will leave us */ |
| priv->last_left = left; |
| } |
| |
| |
| void QualityControlRender_BeginRender(QualityControlImpl *This) { |
| This->start = -1; |
| if (!This->clock) |
| return; |
| IReferenceClock_GetTime(This->clock, &This->start); |
| } |
| |
| void QualityControlRender_EndRender(QualityControlImpl *This) { |
| REFERENCE_TIME elapsed; |
| if (!This->clock || This->start < 0 || FAILED(IReferenceClock_GetTime(This->clock, &This->stop))) |
| return; |
| |
| elapsed = This->start - This->stop; |
| if (elapsed < 0) |
| return; |
| if (This->avg_render < 0) |
| This->avg_render = elapsed; |
| else |
| This->avg_render = UPDATE_RUNNING_AVG (This->avg_render, elapsed); |
| } |
