summaryrefslogtreecommitdiff
path: root/media/gmp-clearkey/0.1/WMFUtils.cpp
blob: cb3cfe9fc9a8426d5afc89833a301ec1e6ec91a9 (plain)
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
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
/*
 * Copyright 2013, Mozilla Foundation and contributors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "WMFUtils.h"
#include "ClearKeyUtils.h"
#include <versionhelpers.h>

#include <algorithm>
#include <stdio.h>

#define INITGUID
#include <guiddef.h>

#pragma comment(lib, "mfuuid.lib")
#pragma comment(lib, "wmcodecdspuuid")

void LOG(const char* format, ...)
{
#ifdef WMF_DECODER_LOG
  va_list args;
  va_start(args, format);
  vprintf(format, args);
#endif
}

#ifdef WMF_MUST_DEFINE_AAC_MFT_CLSID
// Some SDK versions don't define the AAC decoder CLSID.
// {32D186A7-218F-4C75-8876-DD77273A8999}
DEFINE_GUID(CLSID_CMSAACDecMFT, 0x32D186A7, 0x218F, 0x4C75, 0x88, 0x76, 0xDD, 0x77, 0x27, 0x3A, 0x89, 0x99);
#endif

DEFINE_GUID(CLSID_CMSH264DecMFT, 0x62CE7E72, 0x4C71, 0x4d20, 0xB1, 0x5D, 0x45, 0x28, 0x31, 0xA8, 0x7D, 0x9D);

namespace wmf {


#define MFPLAT_FUNC(_func, _dllname) \
  decltype(::_func)* _func;
#include "WMFSymbols.h"
#undef MFPLAT_FUNC

static bool
LinkMfplat()
{
  static bool sInitDone = false;
  static bool sInitOk = false;
  if (!sInitDone) {
    sInitDone = true;
    HMODULE handle;

#define MFPLAT_FUNC(_func, _dllname) \
      handle = GetModuleHandleA(_dllname); \
      if (!(_func = (decltype(_func))(GetProcAddress(handle, #_func)))) { \
        return false; \
      }

#include "WMFSymbols.h"
#undef MFPLAT_FUNC
    sInitOk = true;
  }
  return sInitOk;
}

const char*
WMFDecoderDllNameFor(CodecType aCodec)
{
  if (aCodec == H264) {
    // For H.264 decoding, we need msmpeg2vdec.dll on Win 7 & 8,
    // and mfh264dec.dll on Vista.
    if (IsWindows7OrGreater()) {
      return "msmpeg2vdec.dll";
    } else {
      return "mfh264dec.dll";
    }
  } else if (aCodec == AAC) {
    // For AAC decoding, we need to use msauddecmft.dll on Win8,
    // msmpeg2adec.dll on Win7, and msheaacdec.dll on Vista.
    if (IsWindows8OrGreater()) {
      return "msauddecmft.dll";
    } else if (IsWindows7OrGreater()) {
      return "msmpeg2adec.dll";
    } else {
      return "mfheaacdec.dll";
    }
  } else {
    return "";
  }
}


bool
EnsureLibs()
{
  static bool sInitDone = false;
  static bool sInitOk = false;
  if (!sInitDone) {
    sInitOk = LinkMfplat() &&
              !!GetModuleHandleA(WMFDecoderDllNameFor(AAC)) &&
              !!GetModuleHandleA(WMFDecoderDllNameFor(H264));
    sInitDone = true;
  }
  return sInitOk;
}

int32_t
MFOffsetToInt32(const MFOffset& aOffset)
{
  return int32_t(aOffset.value + (aOffset.fract / 65536.0f));
}

// Gets the sub-region of the video frame that should be displayed.
// See: http://msdn.microsoft.com/en-us/library/windows/desktop/bb530115(v=vs.85).aspx
HRESULT
GetPictureRegion(IMFMediaType* aMediaType, IntRect& aOutPictureRegion)
{
  // Determine if "pan and scan" is enabled for this media. If it is, we
  // only display a region of the video frame, not the entire frame.
  BOOL panScan = MFGetAttributeUINT32(aMediaType, MF_MT_PAN_SCAN_ENABLED, FALSE);

  // If pan and scan mode is enabled. Try to get the display region.
  HRESULT hr = E_FAIL;
  MFVideoArea videoArea;
  memset(&videoArea, 0, sizeof(MFVideoArea));
  if (panScan) {
    hr = aMediaType->GetBlob(MF_MT_PAN_SCAN_APERTURE,
                             (UINT8*)&videoArea,
                             sizeof(MFVideoArea),
                             NULL);
  }

  // If we're not in pan-and-scan mode, or the pan-and-scan region is not set,
  // check for a minimimum display aperture.
  if (!panScan || hr == MF_E_ATTRIBUTENOTFOUND) {
    hr = aMediaType->GetBlob(MF_MT_MINIMUM_DISPLAY_APERTURE,
                             (UINT8*)&videoArea,
                             sizeof(MFVideoArea),
                             NULL);
  }

  if (hr == MF_E_ATTRIBUTENOTFOUND) {
    // Minimum display aperture is not set, for "backward compatibility with
    // some components", check for a geometric aperture.
    hr = aMediaType->GetBlob(MF_MT_GEOMETRIC_APERTURE,
                             (UINT8*)&videoArea,
                             sizeof(MFVideoArea),
                             NULL);
  }

  if (SUCCEEDED(hr)) {
    // The media specified a picture region, return it.
    IntRect picture = IntRect(MFOffsetToInt32(videoArea.OffsetX),
                              MFOffsetToInt32(videoArea.OffsetY),
                              videoArea.Area.cx,
                              videoArea.Area.cy);
    ENSURE(picture.width <= mozilla::MAX_VIDEO_WIDTH, E_FAIL);
    ENSURE(picture.height <= mozilla::MAX_VIDEO_HEIGHT, E_FAIL);
    aOutPictureRegion = picture;
    return S_OK;
  }

  // No picture region defined, fall back to using the entire video area.
  UINT32 width = 0, height = 0;
  hr = MFGetAttributeSize(aMediaType, MF_MT_FRAME_SIZE, &width, &height);
  ENSURE(SUCCEEDED(hr), hr);
  ENSURE(width <= mozilla::MAX_VIDEO_WIDTH, E_FAIL);
  ENSURE(height <= mozilla::MAX_VIDEO_HEIGHT, E_FAIL);
  aOutPictureRegion = IntRect(0, 0, width, height);
  return S_OK;
}


HRESULT
GetDefaultStride(IMFMediaType *aType, uint32_t* aOutStride)
{
  // Try to get the default stride from the media type.
  UINT32 stride = 0;
  HRESULT hr = aType->GetUINT32(MF_MT_DEFAULT_STRIDE, &stride);
  if (SUCCEEDED(hr)) {
    ENSURE(stride <= mozilla::MAX_VIDEO_WIDTH, E_FAIL);
    *aOutStride = stride;
    return S_OK;
  }

  // Stride attribute not set, calculate it.
  GUID subtype = GUID_NULL;
  uint32_t width = 0;
  uint32_t height = 0;

  hr = aType->GetGUID(MF_MT_SUBTYPE, &subtype);
  ENSURE(SUCCEEDED(hr), hr);

  hr = MFGetAttributeSize(aType, MF_MT_FRAME_SIZE, &width, &height);
  ENSURE(SUCCEEDED(hr), hr);
  ENSURE(width <= mozilla::MAX_VIDEO_WIDTH, E_FAIL);
  ENSURE(height <= mozilla::MAX_VIDEO_HEIGHT, E_FAIL);

  LONG lstride = 0;
  hr = MFGetStrideForBitmapInfoHeader(subtype.Data1, width, &lstride);
  ENSURE(SUCCEEDED(hr), hr);
  ENSURE(lstride <= mozilla::MAX_VIDEO_WIDTH, E_FAIL);
  ENSURE(lstride >= 0, E_FAIL);
  *aOutStride = lstride;

  return hr;
}

void dump(const uint8_t* data, uint32_t len, const char* filename)
{
  FILE* f = 0;
  fopen_s(&f, filename, "wb");
  fwrite(data, len, 1, f);
  fclose(f);
}

HRESULT
CreateMFT(const CLSID& clsid,
          const char* aDllName,
          CComPtr<IMFTransform>& aOutMFT)
{
  HMODULE module = ::GetModuleHandleA(aDllName);
  if (!module) {
    LOG("Failed to get %S\n", aDllName);
    return E_FAIL;
  }

  typedef HRESULT (WINAPI* DllGetClassObjectFnPtr)(const CLSID& clsid,
                                                   const IID& iid,
                                                   void** object);

  DllGetClassObjectFnPtr GetClassObjPtr =
    reinterpret_cast<DllGetClassObjectFnPtr>(GetProcAddress(module, "DllGetClassObject"));
  if (!GetClassObjPtr) {
    LOG("Failed to get DllGetClassObject\n");
    return E_FAIL;
  }

  CComPtr<IClassFactory> classFactory;
  HRESULT hr = GetClassObjPtr(clsid,
                              __uuidof(IClassFactory),
                              reinterpret_cast<void**>(static_cast<IClassFactory**>(&classFactory)));
  if (FAILED(hr)) {
    LOG("Failed to get H264 IClassFactory\n");
    return E_FAIL;
  }

  hr = classFactory->CreateInstance(NULL,
                                    __uuidof(IMFTransform),
                                    reinterpret_cast<void**>(static_cast<IMFTransform**>(&aOutMFT)));
  if (FAILED(hr)) {
    LOG("Failed to get create MFT\n");
    return E_FAIL;
  }

  return S_OK;
}

int32_t
GetNumThreads(int32_t aCoreCount)
{
  return aCoreCount > 4 ? -1 : (std::max)(aCoreCount - 1, 1);
}

} // namespace