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-rw-r--r--media/gmp-clearkey/0.1/WMFUtils.cpp222
1 files changed, 222 insertions, 0 deletions
diff --git a/media/gmp-clearkey/0.1/WMFUtils.cpp b/media/gmp-clearkey/0.1/WMFUtils.cpp
new file mode 100644
index 0000000000..33d84e2ace
--- /dev/null
+++ b/media/gmp-clearkey/0.1/WMFUtils.cpp
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+/*
+ * 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>
+
+#ifndef __MINGW32__
+# pragma comment(lib, "mfuuid.lib")
+# pragma comment(lib, "wmcodecdspuuid")
+#endif
+
+void LOG(const char* format, ...) {
+#ifdef WMF_DECODER_LOG
+ va_list args;
+ va_start(args, format);
+ vprintf(format, args);
+#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;
+}
+
+bool EnsureLibs() {
+ static bool sInitDone = false;
+ static bool sInitOk = false;
+ if (!sInitDone) {
+ sInitOk = LinkMfplat() && !!GetModuleHandleA(WMFDecoderDllName());
+ 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 wmf
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