697 lines
25 KiB
C
697 lines
25 KiB
C
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//==========================================================================;
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//
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// playbackimpl.h : additional infrastructure to support implementing IMSVidPlayback
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// nicely from c++
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// Copyright (c) Microsoft Corporation 1999.
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//
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/////////////////////////////////////////////////////////////////////////////
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#pragma once
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#ifndef PLAYBACKIMPL_H
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#define PLAYBACKIMPL_H
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#include <math.h>
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#include "inputimpl.h"
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#include <uuids.h>
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namespace MSVideoControl {
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#define BACKWARDS_STEPPING 0
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const long nano_to_hundredths = 100000;
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template<class T, LPCGUID LibID, LPCGUID KSCategory, class MostDerivedInterface = IMSVidPlayback>
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class DECLSPEC_NOVTABLE IMSVidPlaybackImpl :
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public IMSVidInputDeviceImpl<T, LibID, KSCategory, MostDerivedInterface> {
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protected:
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bool m_fEnableResetOnStop;
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public:
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IMSVidPlaybackImpl():
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m_fEnableResetOnStop(false) {}
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virtual ~IMSVidPlaybackImpl() {}
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//-----------------------------------------------------------------------------------------
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// Name:
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//-----------------------------------------------------------------------------------------
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STDMETHOD(get_Length)(/*[out, retval]*/long *lLength){
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HRESULT hr = S_OK;
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LONGLONG tempval;
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PositionModeList curMode;
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try{
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// Checking args and init'ing interfaces
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if (!lLength){
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return E_POINTER;
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}
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if (!m_pGraph) {
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// graph not valid
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return ImplReportError(__uuidof(T), IDS_INVALID_STATE, __uuidof(IMSVidPlayback), HRESULT_FROM_WIN32(ERROR_INVALID_STATE));
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}
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// See if object supports IMediaSeeking
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PQMediaSeeking PQIMSeeking(m_pGraph);
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if(PQIMSeeking){
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// Find out what postion mode is being used
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hr = get_PositionMode(&curMode);
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if(FAILED(hr)){
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return hr;
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}
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hr = PQIMSeeking->GetDuration(&tempval);
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if(FAILED(hr)){
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return hr;
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}
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// If it is FrameMode no conversion needed
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if(curMode == FrameMode){
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*lLength = static_cast<long>(tempval);
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hr = S_OK;
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return hr;
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}
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// If it is TenthsSecondsMode need to be converted from 100 nanosecond units
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else if(curMode == TenthsSecondsMode){
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*lLength = static_cast<long>(tempval / nano_to_hundredths);
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hr = S_OK;
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return hr;
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}
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// If it is some other mode not supported by the vidctl
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else{
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return E_UNEXPECTED;
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}
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}
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// See if object supports IMediaPostion
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PQMediaPosition PQIMPos(m_pGraph);
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if(PQIMPos){
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// Get position
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double tempDub;
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hr = PQIMPos->get_CurrentPosition(&tempDub);
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// IMediaPostion only supports 100 Nanosecond units
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*lLength = static_cast<long>(tempDub / nano_to_hundredths);
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hr = S_OK;
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return hr;
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}
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// Could Not QI IMedia Seeking or Position
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return ImplReportError(__uuidof(T), IDS_E_CANTQI , __uuidof(IMSVidPlayback), E_NOINTERFACE);
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}
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catch(HRESULT hrTmp){
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// Something went bad, threw a HRESULT
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return ImplReportError(__uuidof(T), IDS_INVALID_STATE , __uuidof(IMSVidPlayback), hrTmp);
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}
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catch(...){
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// Something went bad, dont know what it threw
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return E_UNEXPECTED;
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}
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}
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//-----------------------------------------------------------------------------------------
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// Name: get_CurrentPosition(LONGLONG*)
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//-----------------------------------------------------------------------------------------
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STDMETHOD(get_CurrentPosition)(/*[out,retval]*/long *lPosition) {
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HRESULT hr = S_OK;
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LONGLONG tempval;
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PositionModeList curMode;
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try{
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// Checking args and init'ing interfaces
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if (!lPosition){
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return E_POINTER;
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}
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if (!m_pGraph) {
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// graph not valid
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return ImplReportError(__uuidof(T), IDS_INVALID_STATE, __uuidof(IMSVidPlayback), HRESULT_FROM_WIN32(ERROR_INVALID_STATE));
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}
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// See if object supports IMediaSeeking
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PQMediaSeeking PQIMSeeking(m_pGraph);
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if(PQIMSeeking){
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// Find out what postion mode is being used
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hr = get_PositionMode(&curMode);
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if(FAILED(hr)){
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return hr;
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}
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hr = PQIMSeeking->GetCurrentPosition(&tempval);
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if(FAILED(hr)){
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return hr;
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}
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// If it is FrameMode no conversion needed
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if(curMode == FrameMode){
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*lPosition = static_cast<long>(tempval);
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hr = S_OK;
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return hr;
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}
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// If it is TenthsSecondsMode need to be converted from 100 nanosecond units
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else if(curMode == TenthsSecondsMode){
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*lPosition = static_cast<long>(tempval / nano_to_hundredths);
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hr = S_OK;
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return hr;
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}
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// If it is some other mode not supported by the vidctl
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else{
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return E_UNEXPECTED;
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}
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}
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// See if object supports IMediaPostion
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PQMediaPosition PQIMPos(m_pGraph);
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if(PQIMPos){
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// Get position
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double tempDub;
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hr = PQIMPos->get_CurrentPosition(&tempDub);
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// IMediaPostion only supports 100 Nanosecond units
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*lPosition = static_cast<long>(tempDub / nano_to_hundredths);
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hr = S_OK;
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return hr;
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}
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// Could Not QI IMedia Seeking or Position
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return ImplReportError(__uuidof(T), IDS_E_CANTQI , __uuidof(IMSVidPlayback), E_NOINTERFACE);
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}
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catch(HRESULT hrTmp){
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// Something went bad, threw a HRESULT
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return ImplReportError(__uuidof(T), IDS_INVALID_STATE , __uuidof(IMSVidPlayback), hrTmp);
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}
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catch(...){
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// Something went bad, dont know what it threw
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return E_UNEXPECTED;
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}
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}
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//-----------------------------------------------------------------------------------------
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// Name: put_CurrentPosition(LONGLONG)
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//-----------------------------------------------------------------------------------------
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STDMETHOD(put_CurrentPosition)(/*[in]*/long lPosition) {
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HRESULT hr = S_OK;
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LONGLONG tempval = 0;
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PositionModeList curMode;
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LONG curPos;
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try{
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// Checking args and interfaces
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if (!m_pGraph) {
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return ImplReportError(__uuidof(T), IDS_INVALID_STATE, __uuidof(IMSVidPlayback), HRESULT_FROM_WIN32(ERROR_INVALID_STATE));
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}
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hr = get_CurrentPosition(&curPos);
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if(curPos == lPosition){
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return NOERROR;
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}
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// Check for a IMediaSeeking Interface
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PQMediaSeeking PQIMSeeking(m_pGraph);
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if(PQIMSeeking){
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// Get the position Mode
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hr = get_PositionMode(&curMode);
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if(FAILED(hr)){
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return hr;
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}
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tempval = lPosition;
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// If it is in TenthsSecondsMode convert input into 100 nanosecond units
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if(curMode == TenthsSecondsMode){
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tempval = static_cast<LONGLONG>(lPosition);
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tempval = tempval * nano_to_hundredths;
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}
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// If it is in some other mode
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else if(curMode != FrameMode){
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return E_UNEXPECTED;
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}
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// Set the new Position
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#if 0
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if(curPos > lPosition && !m_pGraph.IsStopped()){
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DWORD seekingFlags = AM_SEEKING_CanSeekBackwards;
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hr = PQIMSeeking->CheckCapabilities(&seekingFlags);
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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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#endif
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hr = PQIMSeeking->SetPositions(&tempval, AM_SEEKING_AbsolutePositioning, NULL, 0);
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return hr;
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}
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// Check for a IMediaPostion
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PQMediaPosition PQIMPos(m_pGraph);
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if(PQIMPos){
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if(curPos > lPosition && !m_pGraph.IsStopped()){
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long canSeekBackwardRetVal;
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PQIMPos->CanSeekBackward(&canSeekBackwardRetVal);
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if(canSeekBackwardRetVal != -1){// OATRUE = -1
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return E_INVALIDARG;
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}
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}
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// IMediaPosition only does 100 nanosecond units
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double tempDub = lPosition;
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tempDub = tempDub * nano_to_hundredths;
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hr = PQIMPos->put_CurrentPosition(tempDub);
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return hr;
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}
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// Could Not QI Media Position or Seeking
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return ImplReportError(__uuidof(T), IDS_E_CANTQI , __uuidof(IMSVidPlayback), E_NOINTERFACE);
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}
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catch(HRESULT hrTmp){
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// Something went bad, threw a HRESULT
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return ImplReportError(__uuidof(T), IDS_INVALID_STATE , __uuidof(IMSVidPlayback), hrTmp);
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}
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catch(...){
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// Something went bad, dont know what it threw
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return E_UNEXPECTED;
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}
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}
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//-----------------------------------------------------------------------------------------
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// Name: put_PositionMode(LONGLONG)
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//-----------------------------------------------------------------------------------------
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STDMETHOD(put_PositionMode)(/*[in]*/PositionModeList lPositionMode) {
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HRESULT hr = S_OK;
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double testval;
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get_Rate(&testval);
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try{
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// Checking args and interfaces
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if (!m_pGraph) {
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// graph not valid
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return ImplReportError(__uuidof(T), IDS_INVALID_STATE, __uuidof(IMSVidPlayback), HRESULT_FROM_WIN32(ERROR_INVALID_STATE));
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}
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// only valid values
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if(lPositionMode != FrameMode && lPositionMode != TenthsSecondsMode){
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return E_INVALIDARG;
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}
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// Try for a IMediaSeeking
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PQMediaSeeking PQIMSeeking(m_pGraph);
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if(PQIMSeeking){
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// Set the new mode
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if(lPositionMode == FrameMode){
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return PQIMSeeking->SetTimeFormat( &( static_cast<GUID>(TIME_FORMAT_FRAME) ) );
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}
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if(lPositionMode == TenthsSecondsMode){
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return PQIMSeeking->SetTimeFormat(&(static_cast<GUID>(TIME_FORMAT_MEDIA_TIME)));
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}
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}
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// Try for a IMediaPosition
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PQMediaPosition PQIMPos(m_pGraph);
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if(PQIMPos){
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// Only supports TenthsSecondsMode
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if(lPositionMode == TenthsSecondsMode){
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return S_OK;
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}
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else{
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return E_FAIL;
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}
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}
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// Could Not QI
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return ImplReportError(__uuidof(T), IDS_E_CANTQI , __uuidof(IMSVidPlayback), E_NOINTERFACE);
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}
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catch(HRESULT hrTmp){
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// Something went bad, threw a HRESULT
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return ImplReportError(__uuidof(T), IDS_INVALID_STATE , __uuidof(IMSVidPlayback), hrTmp);
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}
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catch(...){
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// Something went bad, dont know what it threw
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return E_UNEXPECTED;
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}
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}
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//-----------------------------------------------------------------------------------------
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// Name: get_PositionMode(LONGLONG*)
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//-----------------------------------------------------------------------------------------
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STDMETHOD(get_PositionMode)(/*[out,retval]*/PositionModeList* lPositionMode) {
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HRESULT hr = S_OK;
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double testval;
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get_Rate(&testval);
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try{
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// Checking args and interfaces
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if(!lPositionMode){
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return E_POINTER;
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}
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if (!m_pGraph) {
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// graph not valid
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return ImplReportError(__uuidof(T), IDS_INVALID_STATE, __uuidof(IMSVidPlayback), HRESULT_FROM_WIN32(ERROR_INVALID_STATE));
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}
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// Get an IMediaSeeking Interface
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PQMediaSeeking PQIMSeeking(m_pGraph);
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if(PQIMSeeking){
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// Get the mode
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GUID cur_mode;
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hr = PQIMSeeking->GetTimeFormat(&cur_mode);
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if(FAILED(hr)){
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return hr;
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}
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// Check to see which mode it is in
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if(cur_mode == static_cast<GUID>(TIME_FORMAT_FRAME)){
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*lPositionMode = FrameMode;
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return S_OK;
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}
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if(cur_mode == static_cast<GUID>(TIME_FORMAT_MEDIA_TIME)){
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*lPositionMode = TenthsSecondsMode;
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return S_OK;
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}
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// Not in a vidctl supported mode
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else{
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return E_FAIL;
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}
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}
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// Get IMediaPosition
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PQMediaPosition PQIMPos(m_pGraph);
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if(PQIMPos){
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// Only supports TenthsSecondsMode
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*lPositionMode = TenthsSecondsMode;
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return S_OK;
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}
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// Could Not QI
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return ImplReportError(__uuidof(T), IDS_E_CANTQI , __uuidof(IMSVidPlayback), E_NOINTERFACE);
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}
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catch(HRESULT hrTmp){
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// Something went bad, threw a HRESULT
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return ImplReportError(__uuidof(T), IDS_INVALID_STATE , __uuidof(IMSVidPlayback), hrTmp);
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}
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catch(...){
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// Something went bad, dont know what it threw
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return E_UNEXPECTED;
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}
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}
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STDMETHOD(get_Duration)(double *dPos) {
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return E_NOTIMPL;
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}
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|
|
STDMETHOD(get_PrerollTime)(double *dPos) {
|
||
|
|
return E_NOTIMPL;
|
||
|
|
}
|
||
|
|
STDMETHOD(put_PrerollTime)(double dPos) {
|
||
|
|
return E_NOTIMPL;
|
||
|
|
}
|
||
|
|
STDMETHOD(get_StartTime)(double *StartTime) {
|
||
|
|
return E_NOTIMPL;
|
||
|
|
}
|
||
|
|
STDMETHOD(put_StartTime)(double StartTime) {
|
||
|
|
return E_NOTIMPL;
|
||
|
|
}
|
||
|
|
STDMETHOD(get_StopTime)(double *StopTime) {
|
||
|
|
return E_NOTIMPL;
|
||
|
|
}
|
||
|
|
STDMETHOD(put_StopTime)(double StopTime) {
|
||
|
|
return E_NOTIMPL;
|
||
|
|
}
|
||
|
|
|
||
|
|
//-----------------------------------------------------------------------------------------
|
||
|
|
// Name: get_EnableResetOnStop(VARIANT_BOOL*)
|
||
|
|
//-----------------------------------------------------------------------------------------
|
||
|
|
STDMETHOD(get_EnableResetOnStop)(/*[out, retval]*/ VARIANT_BOOL *pVal){
|
||
|
|
HRESULT hr = S_OK;
|
||
|
|
|
||
|
|
try {
|
||
|
|
if(NULL == pVal){
|
||
|
|
throw(E_POINTER);
|
||
|
|
}
|
||
|
|
|
||
|
|
if(m_fEnableResetOnStop == true){
|
||
|
|
*pVal = VARIANT_TRUE;
|
||
|
|
}
|
||
|
|
else{
|
||
|
|
*pVal = VARIANT_FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
catch(HRESULT hrTmp){
|
||
|
|
hr = hrTmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
catch(...){
|
||
|
|
hr = E_UNEXPECTED;
|
||
|
|
}
|
||
|
|
|
||
|
|
return hr;
|
||
|
|
}// end of function get_EnableResetOnStop
|
||
|
|
//-----------------------------------------------------------------------------------------
|
||
|
|
// Name: put_EnableResetOnStop(VARIANT_BOOL)
|
||
|
|
//-----------------------------------------------------------------------------------------
|
||
|
|
STDMETHOD(put_EnableResetOnStop)(/*[in]*/ VARIANT_BOOL newVal){
|
||
|
|
HRESULT hr = S_OK;
|
||
|
|
|
||
|
|
try {
|
||
|
|
if(newVal == VARIANT_TRUE){
|
||
|
|
m_fEnableResetOnStop = true;
|
||
|
|
}
|
||
|
|
else{
|
||
|
|
m_fEnableResetOnStop = false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
catch(...){
|
||
|
|
hr = E_UNEXPECTED;
|
||
|
|
}
|
||
|
|
|
||
|
|
return hr;
|
||
|
|
}// end of function put_EnableResetOnStop
|
||
|
|
|
||
|
|
//-----------------------------------------------------------------------------------------
|
||
|
|
// Name: get_CanStep(VARIANT_BOOL, VARIANT_BOOL*)
|
||
|
|
//-----------------------------------------------------------------------------------------
|
||
|
|
STDMETHOD(get_CanStep)(VARIANT_BOOL fBackwards, VARIANT_BOOL *pfCan){
|
||
|
|
// NOTE: NO ONE supports backwords stepping (why not? who knows)
|
||
|
|
// so just like everyone else we dont either
|
||
|
|
try{
|
||
|
|
// Checking args and interfaces
|
||
|
|
|
||
|
|
if(NULL == pfCan){
|
||
|
|
// Passed a NULL Pointer
|
||
|
|
return E_POINTER;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!m_pGraph) {
|
||
|
|
// graph not valid
|
||
|
|
return ImplReportError(__uuidof(T), IDS_INVALID_STATE, __uuidof(IMSVidPlayback), HRESULT_FROM_WIN32(ERROR_INVALID_STATE));
|
||
|
|
}
|
||
|
|
|
||
|
|
//Get a VideoFrameStep Interface
|
||
|
|
PQVideoFrameStep pVFS(m_pGraph);
|
||
|
|
if(!pVFS){
|
||
|
|
// Could Not QI
|
||
|
|
return ImplReportError(__uuidof(T), IDS_E_CANTQI , __uuidof(IMSVidPlayback), E_NOINTERFACE);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
#if BACKWARDS_STEPPING // Checking for Backward Stepping should always be 0
|
||
|
|
if(fBackwards == VARIANT_TRUE){
|
||
|
|
// Backwords Stepping Not Supported Most Likely
|
||
|
|
if(pVFS->CanStep(TRUE, NULL)==S_OK){
|
||
|
|
// It is all Good, Can Step Backwords
|
||
|
|
*pfCan = VARIANT_TRUE;
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
*pfCan = VARIANT_FALSE;
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
#else // Still checking for Backward Stepping
|
||
|
|
if(fBackwards == VARIANT_TRUE){
|
||
|
|
*pfCan = VARIANT_FALSE;
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif // End checking for Backward Stepping
|
||
|
|
|
||
|
|
// Checking for Forward Stepping
|
||
|
|
else{
|
||
|
|
if(pVFS->CanStep(FALSE, NULL)==S_OK){
|
||
|
|
// It is all Good, Can Step Forward
|
||
|
|
*pfCan = VARIANT_TRUE;
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
else{
|
||
|
|
// Can't Step
|
||
|
|
*pfCan = VARIANT_FALSE;
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
catch(HRESULT hrTmp){
|
||
|
|
// Something went bad, threw a HRESULT
|
||
|
|
return ImplReportError(__uuidof(T), IDS_INVALID_STATE , __uuidof(IMSVidPlayback), hrTmp);
|
||
|
|
}
|
||
|
|
catch(...){
|
||
|
|
// Something went bad, dont know what it threw
|
||
|
|
return E_UNEXPECTED;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//-----------------------------------------------------------------------------------------
|
||
|
|
// Name: Step(long)
|
||
|
|
//-----------------------------------------------------------------------------------------
|
||
|
|
STDMETHOD(Step)(long lStep){
|
||
|
|
try{
|
||
|
|
// Checking args and interfaces
|
||
|
|
|
||
|
|
if (!m_pGraph) {
|
||
|
|
// graph not valid
|
||
|
|
return ImplReportError(__uuidof(T), IDS_INVALID_STATE, __uuidof(IMSVidPlayback), HRESULT_FROM_WIN32(ERROR_INVALID_STATE));
|
||
|
|
}
|
||
|
|
|
||
|
|
PQVideoFrameStep pVFS(m_pGraph);
|
||
|
|
|
||
|
|
if(!pVFS){
|
||
|
|
// Could Not QI
|
||
|
|
return ImplReportError(__uuidof(T), IDS_E_CANTQI , __uuidof(IMSVidPlayback), E_NOINTERFACE);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
#if BACKWARDS_STEPPING // Checking for Backward Stepping should always be 0
|
||
|
|
// If backwords stepping set rate or what ever needs to be done
|
||
|
|
|
||
|
|
if(lStep < 0){
|
||
|
|
// Backwords Stepping Not Supported Most Likely
|
||
|
|
if(pVFS->CanStep(TRUE, NULL)==S_OK){
|
||
|
|
// It is all Good, Can Step Backwords
|
||
|
|
CComQIPtr<IMediaPosition> IMPos(m_pGraph);
|
||
|
|
CComQIPtr<IMediaControl> IMCon(m_pGraph);
|
||
|
|
if(IMPos&&IMCon){
|
||
|
|
OAFilterState enterState;
|
||
|
|
IMCon->GetState(INFINITE , &enterState);
|
||
|
|
HRESULT hr = IMPos->put_Rate(1);
|
||
|
|
if(SUCCEEDED(hr)){
|
||
|
|
hr = pVFS->Step((-lStep), NULL);
|
||
|
|
if(SUCCEEDED(hr)){
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
else{
|
||
|
|
return E_UNEXPECTED;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// Backwords stepping not supported
|
||
|
|
return E_NOTIMPL;
|
||
|
|
}
|
||
|
|
#else // Still checking for Backward Stepping
|
||
|
|
|
||
|
|
if(lStep < 0){
|
||
|
|
return E_NOTIMPL;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif // End checking for Backward Stepping
|
||
|
|
// Make it step
|
||
|
|
return pVFS->Step(lStep, NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
catch(HRESULT hrTmp){
|
||
|
|
// Something went bad, threw a HRESULT
|
||
|
|
return ImplReportError(__uuidof(T), IDS_INVALID_STATE , __uuidof(IMSVidPlayback), hrTmp);
|
||
|
|
}
|
||
|
|
catch(...){
|
||
|
|
// Something went bad, dont know what it threw
|
||
|
|
return E_UNEXPECTED;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// note: the following methods control the playback device *NOT* the graph.
|
||
|
|
// if the underlying source filter only supports these functions via
|
||
|
|
// imediacontrol on the graph then this device segment object should return E_NOTIMPL.
|
||
|
|
STDMETHOD(Run)() {
|
||
|
|
return E_NOTIMPL;
|
||
|
|
}
|
||
|
|
STDMETHOD(Pause)() {
|
||
|
|
return E_NOTIMPL;
|
||
|
|
}
|
||
|
|
STDMETHOD(Stop)() {
|
||
|
|
return E_NOTIMPL;
|
||
|
|
}
|
||
|
|
//-----------------------------------------------------------------------------------------
|
||
|
|
// Name: put_Rate(double)
|
||
|
|
//-----------------------------------------------------------------------------------------
|
||
|
|
STDMETHOD(put_Rate)(double lRate){
|
||
|
|
HRESULT hr = S_OK;
|
||
|
|
try{
|
||
|
|
/*** Checking args and init'ing interfaces ***/
|
||
|
|
|
||
|
|
if (!m_pGraph) {
|
||
|
|
// graph not valid
|
||
|
|
return ImplReportError(__uuidof(T), IDS_INVALID_STATE, __uuidof(IMSVidPlayback), HRESULT_FROM_WIN32(ERROR_INVALID_STATE));
|
||
|
|
}
|
||
|
|
|
||
|
|
// Attempt to set the rate using IMediaSeeking
|
||
|
|
PQMediaSeeking PQIMSeeking(m_pGraph);
|
||
|
|
if(PQIMSeeking){
|
||
|
|
return PQIMSeeking->SetRate(lRate);
|
||
|
|
}
|
||
|
|
|
||
|
|
// If IMediaSeeking FAILS try IMediaPostion
|
||
|
|
PQMediaPosition PQIMPos(m_pGraph);
|
||
|
|
if(PQIMPos){
|
||
|
|
// Change rate
|
||
|
|
return PQIMPos->put_Rate((double)lRate);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Could Not QI Either one set the error
|
||
|
|
return ImplReportError(__uuidof(T), IDS_E_CANTQI , __uuidof(IMSVidPlayback), E_NOINTERFACE);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
catch(HRESULT hrTmp){
|
||
|
|
// Something went bad, threw a HRESULT
|
||
|
|
return ImplReportError(__uuidof(T), IDS_INVALID_STATE , __uuidof(IMSVidPlayback), hrTmp);
|
||
|
|
}
|
||
|
|
catch(...){
|
||
|
|
// Something went bad, dont know what it threw
|
||
|
|
return E_UNEXPECTED;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
//-----------------------------------------------------------------------------------------
|
||
|
|
// Name: get_Rate(double*)
|
||
|
|
//-----------------------------------------------------------------------------------------
|
||
|
|
STDMETHOD(get_Rate)(double *plRate){
|
||
|
|
HRESULT hr = S_OK;
|
||
|
|
double curRate = 1;
|
||
|
|
try{
|
||
|
|
/*** Checking args and init'ing interfaces ***/
|
||
|
|
if (!plRate){
|
||
|
|
return E_POINTER;
|
||
|
|
}
|
||
|
|
if (!m_pGraph) {
|
||
|
|
// graph not valid
|
||
|
|
return ImplReportError(__uuidof(T), IDS_INVALID_STATE, __uuidof(IMSVidPlayback), HRESULT_FROM_WIN32(ERROR_INVALID_STATE));
|
||
|
|
}
|
||
|
|
PQMediaSeeking PQIMSeeking(m_pGraph);
|
||
|
|
if(PQIMSeeking){
|
||
|
|
hr = PQIMSeeking->GetRate(&curRate);
|
||
|
|
}
|
||
|
|
else{
|
||
|
|
PQMediaPosition PQIMPos(m_pGraph);
|
||
|
|
if(PQIMPos){
|
||
|
|
// Get rate
|
||
|
|
hr = PQIMPos->get_Rate(&curRate);
|
||
|
|
}
|
||
|
|
// Could Not QI
|
||
|
|
else{
|
||
|
|
return ImplReportError(__uuidof(T), IDS_E_CANTQI , __uuidof(IMSVidPlayback), E_NOINTERFACE);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if(SUCCEEDED(hr)){
|
||
|
|
*plRate = curRate;
|
||
|
|
TRACELSM(TRACE_DETAIL, (dbgDump << "Playbackimpl::get_Rate() rate = " << curRate), "");
|
||
|
|
}
|
||
|
|
else{
|
||
|
|
TRACELSM(TRACE_ERROR, (dbgDump << "Playbackimpl::get_Rate() get_rate failed"), "");
|
||
|
|
}
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
catch(HRESULT hrTmp){
|
||
|
|
// Something went bad, threw a HRESULT
|
||
|
|
return ImplReportError(__uuidof(T), IDS_INVALID_STATE , __uuidof(IMSVidPlayback), hrTmp);
|
||
|
|
}
|
||
|
|
catch(...){
|
||
|
|
// Something went bad, dont know what it threw
|
||
|
|
return E_UNEXPECTED;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
}; // namespace
|
||
|
|
|
||
|
|
#endif
|
||
|
|
// end of file - playbackimpl.h
|