1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
// Header for standard system include files.
// Copyright (c) Microsoft. All rights reserved.
//
// The MIT License (MIT)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files(the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions :
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
#pragma once
#include <collection.h>
#include <ppltasks.h>
#include <wrl\implements.h>
#include <wrl\wrappers\corewrappers.h>
#include <Roerrorapi.h>
#include <queue>
#include <sstream>
#include <robuffer.h>
#include <mfapi.h>
#include <mfidl.h>
#include <Mferror.h>
#include <windows.media.h>
#include <windows.media.mediaproperties.h>
namespace AWM = ::ABI::Windows::Media;
namespace AWMMp = ::ABI::Windows::Media::MediaProperties;
namespace AWFC = ::ABI::Windows::Foundation::Collections;
namespace MW = ::Microsoft::WRL;
namespace MWD = ::Microsoft::WRL::Details;
namespace MWW = ::Microsoft::WRL::Wrappers;
namespace WMC = ::Windows::Media::Capture;
namespace WF = ::Windows::Foundation;
namespace WMMp = ::Windows::Media::MediaProperties;
namespace WSS = ::Windows::Storage::Streams;
// Exception-based error handling
#define CHK(statement) {HRESULT _hr = (statement); if (FAILED(_hr)) { throw ref new Platform::COMException(_hr); };}
#define CHKNULL(p) {if ((p) == nullptr) { throw ref new Platform::NullReferenceException(L#p); };}
// Exception-free error handling
#define CHK_RETURN(statement) {hr = (statement); if (FAILED(hr)) { return hr; };}
// Cast a C++/CX msartpointer to an ABI smartpointer
template<typename T, typename U>
MW::ComPtr<T> As(U^ in)
{
MW::ComPtr<T> out;
CHK(reinterpret_cast<IInspectable*>(in)->QueryInterface(IID_PPV_ARGS(&out)));
return out;
}
// Cast an ABI smartpointer
template<typename T, typename U>
Microsoft::WRL::ComPtr<T> As(const Microsoft::WRL::ComPtr<U>& in)
{
Microsoft::WRL::ComPtr<T> out;
CHK(in.As(&out));
return out;
}
// Cast an ABI smartpointer
template<typename T, typename U>
Microsoft::WRL::ComPtr<T> As(U* in)
{
Microsoft::WRL::ComPtr<T> out;
CHK(in->QueryInterface(IID_PPV_ARGS(&out)));
return out;
}
// Get access to bytes in IBuffer
inline unsigned char* GetData(_In_ WSS::IBuffer^ buffer)
{
unsigned char* bytes = nullptr;
CHK(As<WSS::IBufferByteAccess>(buffer)->Buffer(&bytes));
return bytes;
}
// Class to start and shutdown Media Foundation
class AutoMF
{
public:
AutoMF()
: _bInitialized(false)
{
CHK(MFStartup(MF_VERSION));
}
~AutoMF()
{
if (_bInitialized)
{
(void)MFShutdown();
}
}
private:
bool _bInitialized;
};
// Class to track error origin
template <size_t N>
HRESULT OriginateError(__in HRESULT hr, __in wchar_t const (&str)[N])
{
if (FAILED(hr))
{
::RoOriginateErrorW(hr, N - 1, str);
}
return hr;
}
// Class to track error origin
inline HRESULT OriginateError(__in HRESULT hr)
{
if (FAILED(hr))
{
::RoOriginateErrorW(hr, 0, nullptr);
}
return hr;
}
// Converts exceptions into HRESULTs
template <typename Lambda>
HRESULT ExceptionBoundary(Lambda&& lambda)
{
try
{
lambda();
return S_OK;
}
catch (Platform::Exception^ e)
{
return e->HResult;
}
catch (const std::bad_alloc&)
{
return E_OUTOFMEMORY;
}
catch (const std::exception&)
{
return E_FAIL;
}
}
// Wraps an IMFSample in a C++/CX class to be able to define a callback delegate
ref class MediaSample sealed
{
internal:
MW::ComPtr<IMFSample> Sample;
};
delegate void MediaSampleHandler(MediaSample^ sample);