324 lines
8.9 KiB
C++
324 lines
8.9 KiB
C++
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// Copyright (c) 1999 Microsoft Corporation. All rights reserved.
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//
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// Declaration of CSegTriggerTrack.
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//
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#include "dmime.h"
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#include "segtrtrk.h"
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#include "..\shared\Validate.h"
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#include "dmperf.h"
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#include "miscutil.h"
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//////////////////////////////////////////////////////////////////////
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// SetParam
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STDMETHODIMP
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CSegTriggerTrack::SetParam(REFGUID rguid, MUSIC_TIME mtTime, void *pData)
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{
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HRESULT hr = S_OK;
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// Allow a certain amount of recursion. If it gets to 10, something is obviously broken.
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if (m_dwRecursionCount < 10)
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{
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m_dwRecursionCount++;
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TListItem<TriggerInfo> *li = m_EventList.GetHead();
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for (; li; li = li->GetNext())
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{
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TriggerInfo &rinfo = li->GetItemValue();
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rinfo.pIDMSegment->SetParam(rguid, 0xFFFFFFFF, DMUS_SEG_ALLTRACKS, mtTime - rinfo.lTimePhysical, pData);
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}
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m_dwRecursionCount--;
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}
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return hr;
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}
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STDMETHODIMP
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CSegTriggerTrack::InitPlay(
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IDirectMusicSegmentState *pSegmentState,
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IDirectMusicPerformance *pPerformance,
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void **ppStateData,
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DWORD dwTrackID,
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DWORD dwFlags)
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{
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// Call PlayingTrack base class, which sets up our state data.
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HRESULT hr = CSegTriggerTrackBase::InitPlay(pSegmentState, pPerformance, ppStateData, dwTrackID, dwFlags);
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if (SUCCEEDED(hr))
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{
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// Get the audiopath being used by our segment state and save it in our state data.
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assert(*ppStateData); // base class should have created state data
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assert(pSegmentState); // base class should have returned E_POINTER if it wasn't given a segment state
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CSegTriggerTrackState *pState = static_cast<CSegTriggerTrackState *>(*ppStateData);
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IDirectMusicSegmentState8 *pSegSt8 = NULL;
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hr = pSegmentState->QueryInterface(IID_IDirectMusicSegmentState8, reinterpret_cast<void**>(&pSegSt8));
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if (SUCCEEDED(hr))
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{
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hr = pSegSt8->GetObjectInPath(
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0, // pchannel doesn't apply
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DMUS_PATH_AUDIOPATH, // get the audiopath
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0, // buffer index doesn't apply
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CLSID_NULL, // clsid doesn't apply
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0, // there should be only one audiopath
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IID_IDirectMusicAudioPath,
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reinterpret_cast<void**>(&pState->pAudioPath));
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pSegSt8->Release();
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// If this doesn't find an audiopath that's OK. If we're not playing on an audiopath then
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// pAudioPath stays NULL and we'll play our triggered segments on the general performance.
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if (hr == DMUS_E_NOT_FOUND)
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hr = S_OK;
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}
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}
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return hr;
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}
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//////////////////////////////////////////////////////////////////////
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// Load
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// Helper used by the Load functions when we expected to find something
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// but a RiffIter becomes false. In this case, if it has a success HR
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// indicating there were no more items then we return DMUS_E_INVALID_SEGMENTTRIGGERTRACK
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// because the stream didn't contain the data we expected. If it has a
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// failure hr, it was unable to read from the stream and we return its HR.
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HRESULT LoadHrFailOK(const SmartRef::RiffIter &ri)
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{
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HRESULT hr = ri.hr();
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return SUCCEEDED(hr) ? DMUS_E_INVALID_SEGMENTTRIGGERTRACK : hr;
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};
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HRESULT
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CSegTriggerTrack::LoadRiff(SmartRef::RiffIter &ri, IDirectMusicLoader *pIDMLoader)
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{
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HRESULT hr = S_OK;
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if (!ri.Find(SmartRef::RiffIter::List, DMUS_FOURCC_SEGTRACK_LIST))
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{
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#ifdef DBG
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if (SUCCEEDED(ri.hr()))
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{
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Trace(1, "Error: Unable to load segment trigger track: List 'segt' not found.\n");
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}
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#endif
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return LoadHrFailOK(ri);
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}
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SmartRef::RiffIter riTrackForm = ri.Descend();
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if (!riTrackForm)
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return riTrackForm.hr();
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for ( ; riTrackForm; ++riTrackForm)
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{
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if (riTrackForm.type() == SmartRef::RiffIter::Chunk)
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{
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if (riTrackForm.id() == DMUS_FOURCC_SEGTRACK_CHUNK)
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{
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DMUS_IO_SEGMENT_TRACK_HEADER ioItem;
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hr = SmartRef::RiffIterReadChunk(riTrackForm, &ioItem);
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if (FAILED(hr))
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return hr;
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m_dwFlags = ioItem.dwFlags;
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}
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}
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else if (riTrackForm.type() == SmartRef::RiffIter::List)
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{
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if (riTrackForm.id() == DMUS_FOURCC_SEGMENTS_LIST)
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{
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SmartRef::RiffIter riSegList = riTrackForm.Descend();
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while (riSegList && riSegList.Find(SmartRef::RiffIter::List, DMUS_FOURCC_SEGMENT_LIST))
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{
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hr = LoadTrigger(riSegList.Descend(), pIDMLoader);
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if (FAILED(hr))
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return hr;
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++riSegList;
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}
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hr = riSegList.hr();
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if (FAILED(hr))
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return hr;
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}
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}
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}
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return riTrackForm.hr();
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}
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//////////////////////////////////////////////////////////////////////
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// other methods
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HRESULT
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CSegTriggerTrack::PlayItem(
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const TriggerInfo &item,
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statedata &state,
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IDirectMusicPerformance *pPerf,
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IDirectMusicSegmentState* pSegSt,
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DWORD dwVirtualID,
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MUSIC_TIME mtOffset,
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REFERENCE_TIME rtOffset,
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bool fClockTime)
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{
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IDirectMusicPerformance8 *pPerf8 = NULL;
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HRESULT hr = pPerf->QueryInterface(IID_IDirectMusicPerformance8, reinterpret_cast<void**>(&pPerf8));
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if (FAILED(hr))
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return hr;
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hr = pPerf8->PlaySegmentEx(
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item.pIDMSegment,
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NULL, // not a song
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NULL, // no transition
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item.dwPlayFlags | (fClockTime ? DMUS_SEGF_REFTIME : 0), // flags
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fClockTime
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? item.lTimePhysical * REF_PER_MIL + rtOffset
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: item.lTimePhysical + mtOffset, // time
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NULL, // ignore returned segment state
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NULL, // no replacement
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state.pAudioPath // audio path to use (may be NULL indicating defualt)
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);
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pPerf8->Release();
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if (FAILED(hr))
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{
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Trace(0,"Segment Trigger Track failed segment playback\n");
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hr = S_OK; // Avoid an assert.
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}
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return hr;
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}
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HRESULT
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CSegTriggerTrack::LoadTrigger(
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SmartRef::RiffIter ri,
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IDirectMusicLoader *pIDMLoader)
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{
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HRESULT hr = S_OK;
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if (!ri)
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return ri.hr();
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// Create an event
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TListItem<TriggerInfo> *pItem = new TListItem<TriggerInfo>;
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if (!pItem)
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return E_OUTOFMEMORY;
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TriggerInfo &rinfo = pItem->GetItemValue();
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// find the item header (we can't interpret the other chunks until we've found it)
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if (!ri.Find(SmartRef::RiffIter::Chunk, DMUS_FOURCC_SEGMENTITEM_CHUNK))
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{
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delete pItem;
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#ifdef DBG
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if (SUCCEEDED(ri.hr()))
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{
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Trace(1, "Error: Unable to load segment trigger track: Chunk 'sgih' not found.\n");
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}
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#endif
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return LoadHrFailOK(ri);
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}
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// read the header
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DMUS_IO_SEGMENT_ITEM_HEADER ioItem;
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hr = SmartRef::RiffIterReadChunk(ri, &ioItem);
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if (FAILED(hr))
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{
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delete pItem;
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return hr;
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}
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rinfo.lTriggerTime = ioItem.lTimeLogical;
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rinfo.lTimePhysical = ioItem.lTimePhysical;
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rinfo.dwPlayFlags = ioItem.dwPlayFlags;
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rinfo.dwFlags = ioItem.dwFlags;
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++ri;
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if (!ri)
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{
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// If there's nothing more then this is an empty trigger we should ignore because the user hasn't specified
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// the style or segment to play from.
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delete pItem;
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return ri.hr();
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}
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if (!(rinfo.dwFlags & DMUS_SEGMENTTRACKF_MOTIF))
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{
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// find the referenced segment
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if (!ri.Find(SmartRef::RiffIter::List, DMUS_FOURCC_REF_LIST))
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{
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// If there's no DMRF then we should ignore this trigger because the user hasn't specified a segment.
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delete pItem;
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return ri.hr();
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}
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hr = ri.LoadReference(pIDMLoader, IID_IDirectMusicSegment, reinterpret_cast<void**>(&rinfo.pIDMSegment));
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if (FAILED(hr))
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{
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delete pItem;
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return hr;
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}
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}
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else
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{
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// find the segment from the referenced style and motif name
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SmartRef::ComPtr<IDirectMusicStyle> scomStyle;
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SmartRef::Buffer<WCHAR> wbufMotifName;
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for ( ; ri; ++ri)
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{
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if (ri.type() == SmartRef::RiffIter::List)
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{
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if (ri.id() == DMUS_FOURCC_REF_LIST)
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{
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hr = ri.LoadReference(pIDMLoader, IID_IDirectMusicStyle, reinterpret_cast<void**>(&scomStyle));
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if (FAILED(hr))
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{
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delete pItem;
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return hr;
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}
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}
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}
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else if (ri.type() == SmartRef::RiffIter::Chunk)
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{
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if (ri.id() == DMUS_FOURCC_SEGMENTITEMNAME_CHUNK)
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{
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hr = ri.ReadText(&wbufMotifName);
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if (FAILED(hr))
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{
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delete pItem;
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#ifdef DBG
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if (hr == E_FAIL)
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{
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Trace(1, "Error: Unable to load segment trigger track: Problem reading 'snam' chunk.\n");
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}
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#endif
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return hr == E_FAIL ? DMUS_E_INVALID_SEGMENTTRIGGERTRACK : hr;
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}
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}
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}
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}
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hr = ri.hr();
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if (FAILED(hr))
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{
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delete pItem;
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return hr;
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}
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if (!(scomStyle && wbufMotifName))
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{
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// This happens if the track didn't contain a DMRF list or snam chunk. We allow
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// this as a means of representing an empty trigger track item or where the
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// motif to play hasn't been specified. When loading we'll simply ignore
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// this item and continue reading the track.
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delete pItem;
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return S_OK;
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}
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hr = scomStyle->GetMotif(wbufMotifName, &rinfo.pIDMSegment);
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if (hr == S_FALSE)
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{
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Trace(1, "Error: The segment trigger track couldn't load because the motif %S was not found in the style.\n", wbufMotifName);
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hr = DMUS_E_NOT_FOUND;
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}
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if (FAILED(hr))
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{
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delete pItem;
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return hr;
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}
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}
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m_EventList.AddHead(pItem);
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return hr;
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}
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