123 lines
3.4 KiB
C++
123 lines
3.4 KiB
C++
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// Copyright (c) 1997 Microsoft Corporation. All Rights Reserved.
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#include "stdafx.h"
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#include "project.h"
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CAMMediaTypeSample::CAMMediaTypeSample() :
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m_pDataPointer(NULL),
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m_lSize(0),
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m_lActualDataLength(0),
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m_bIAllocatedThisBuffer(false)
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{};
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HRESULT CAMMediaTypeSample::Initialize(CAMMediaTypeStream *pStream, long lSize, BYTE *pData)
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{
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HRESULT hr = CSample::InitSample(pStream, false);
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if (SUCCEEDED(hr)) {
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hr = SetPointer(pData, lSize);
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}
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return hr;
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}
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CAMMediaTypeSample::~CAMMediaTypeSample()
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{
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if (m_bIAllocatedThisBuffer) {
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CoTaskMemFree(m_pDataPointer);
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}
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}
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HRESULT CAMMediaTypeSample::CopyFrom(IMediaSample *pSrcMediaSample)
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{
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AUTO_SAMPLE_LOCK;
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CSample::CopyFrom(pSrcMediaSample);
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BYTE * pBytes;
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HRESULT hr = pSrcMediaSample->GetPointer(&pBytes);
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if (SUCCEEDED(hr)) {
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LONG lCopySize = pSrcMediaSample->GetActualDataLength();
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if (lCopySize > m_lSize) {
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hr = HRESULT_FROM_WIN32(ERROR_MORE_DATA);
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lCopySize = m_lSize;
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}
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memcpy(m_pDataPointer, pBytes, lCopySize);
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}
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return hr;
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}
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STDMETHODIMP CAMMediaTypeSample::SetPointer(BYTE * pBuffer, LONG lSize)
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{
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AUTO_SAMPLE_LOCK;
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HRESULT hr = S_OK;
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if (m_bIAllocatedThisBuffer) {
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CoTaskMemFree(m_pDataPointer);
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m_bIAllocatedThisBuffer = false;
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}
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m_lSize = lSize;
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if (pBuffer) {
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m_pDataPointer = pBuffer;
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} else {
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m_pDataPointer = (BYTE *)CoTaskMemAlloc(lSize);
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if (!m_pDataPointer) {
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hr = E_OUTOFMEMORY;
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} else {
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m_bIAllocatedThisBuffer = true;
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}
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}
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m_lActualDataLength = 0;
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return hr;
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}
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#define STDMETHOD_FORWARD0(fctn) STDMETHODIMP CAMMediaTypeSample::fctn(void) { return m_pMediaSample->fctn(); }
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#define STDMETHOD_FORWARD1(fctn, t1) STDMETHODIMP CAMMediaTypeSample::fctn(t1 p1) { return m_pMediaSample->fctn(p1); }
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#define STDMETHOD_FORWARD2(fctn, t1, t2) STDMETHODIMP CAMMediaTypeSample::fctn(t1 p1, t2 p2) { return m_pMediaSample->fctn(p1, p2); }
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#define LONG_RET_VAL_FWD(fctn) STDMETHODIMP_(LONG) CAMMediaTypeSample::fctn(void) { return m_pMediaSample->fctn(); }
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STDMETHOD_FORWARD1(GetPointer, BYTE **)
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LONG_RET_VAL_FWD (GetSize)
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STDMETHOD_FORWARD2(GetTime, REFERENCE_TIME *, REFERENCE_TIME *)
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STDMETHOD_FORWARD2(SetTime, REFERENCE_TIME *, REFERENCE_TIME *)
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STDMETHOD_FORWARD0(IsSyncPoint)
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STDMETHOD_FORWARD1(SetSyncPoint, BOOL)
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STDMETHOD_FORWARD0(IsPreroll)
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STDMETHOD_FORWARD1(SetPreroll, BOOL)
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LONG_RET_VAL_FWD (GetActualDataLength)
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STDMETHOD_FORWARD1(SetActualDataLength, LONG)
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STDMETHOD_FORWARD1(GetMediaType, AM_MEDIA_TYPE **)
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STDMETHOD_FORWARD1(SetMediaType, AM_MEDIA_TYPE *)
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STDMETHOD_FORWARD0(IsDiscontinuity)
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STDMETHOD_FORWARD1(SetDiscontinuity, BOOL)
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STDMETHOD_FORWARD2(GetMediaTime, LONGLONG *, LONGLONG *)
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STDMETHOD_FORWARD2(SetMediaTime, LONGLONG *, LONGLONG *)
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HRESULT CAMMediaTypeSample::MSCallback_GetPointer(BYTE **ppBuffer)
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{
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*ppBuffer = m_pDataPointer;
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return S_OK;
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}
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LONG CAMMediaTypeSample::MSCallback_GetSize(void)
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{
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return m_lSize;
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}
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LONG CAMMediaTypeSample::MSCallback_GetActualDataLength(void) {
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return m_lActualDataLength;
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}
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HRESULT CAMMediaTypeSample::MSCallback_SetActualDataLength(LONG lActual)
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{
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if (lActual >= 0 && lActual <= m_lSize) {
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m_lActualDataLength = lActual;
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return S_OK;
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} else {
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return E_INVALIDARG;
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}
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}
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bool CAMMediaTypeSample::MSCallback_AllowSetMediaTypeOnMediaSample(void)
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{
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return true;
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}
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