1 files changed, 190 insertions, 0 deletions
diff --git a/dom/media/gmp/GMPMessageUtils.h b/dom/media/gmp/GMPMessageUtils.h
new file mode 100644
index 0000000000..29740a49a6
--- /dev/null
+++ b/dom/media/gmp/GMPMessageUtils.h
@@ -0,0 +1,190 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GMPMessageUtils_h_
+#define GMPMessageUtils_h_
+
+#include "gmp-video-codec.h"
+#include "gmp-video-frame-encoded.h"
+#include "ipc/EnumSerializer.h"
+#include "ipc/IPCMessageUtilsSpecializations.h"
+#include "GMPNativeTypes.h"
+#include "GMPSanitizedExports.h"
+
+namespace IPC {
+
+template <>
+struct ParamTraits<GMPPluginType>
+    : public ContiguousEnumSerializerInclusive<
+          GMPPluginType, GMPPluginType::Unknown, GMPPluginType::Widevine> {};
+
+template <>
+struct ParamTraits<GMPErr>
+    : public ContiguousEnumSerializer<GMPErr, GMPNoErr, GMPLastErr> {};
+
+template <>
+struct ParamTraits<GMPVideoFrameType>
+    : public ContiguousEnumSerializer<GMPVideoFrameType, kGMPKeyFrame,
+                                      kGMPVideoFrameInvalid> {};
+
+template <>
+struct ParamTraits<GMPVideoCodecComplexity>
+    : public ContiguousEnumSerializer<GMPVideoCodecComplexity,
+                                      kGMPComplexityNormal,
+                                      kGMPComplexityInvalid> {};
+
+template <>
+struct ParamTraits<GMPVP8ResilienceMode>
+    : public ContiguousEnumSerializer<GMPVP8ResilienceMode, kResilienceOff,
+                                      kResilienceInvalid> {};
+
+template <>
+struct ParamTraits<GMPVideoCodecType>
+    : public ContiguousEnumSerializer<GMPVideoCodecType, kGMPVideoCodecVP8,
+                                      kGMPVideoCodecInvalid> {};
+
+template <>
+struct ParamTraits<GMPVideoCodecMode>
+    : public ContiguousEnumSerializer<GMPVideoCodecMode, kGMPRealtimeVideo,
+                                      kGMPCodecModeInvalid> {};
+
+template <>
+struct ParamTraits<GMPLogLevel>
+    : public ContiguousEnumSerializerInclusive<GMPLogLevel, kGMPLogDefault,
+                                               kGMPLogInvalid> {};
+
+template <>
+struct ParamTraits<GMPBufferType>
+    : public ContiguousEnumSerializer<GMPBufferType, GMP_BufferSingle,
+                                      GMP_BufferInvalid> {};
+
+template <>
+struct ParamTraits<cdm::EncryptionScheme>
+    : public ContiguousEnumSerializerInclusive<
+          cdm::EncryptionScheme, cdm::EncryptionScheme::kUnencrypted,
+          cdm::EncryptionScheme::kCbcs> {};
+
+template <>
+struct ParamTraits<cdm::HdcpVersion>
+    : public ContiguousEnumSerializerInclusive<
+          cdm::HdcpVersion, cdm::HdcpVersion::kHdcpVersionNone,
+          cdm::HdcpVersion::kHdcpVersion2_2> {};
+
+template <>
+struct ParamTraits<GMPSimulcastStream> {
+  typedef GMPSimulcastStream paramType;
+
+  static void Write(MessageWriter* aWriter, const paramType& aParam) {
+    WriteParam(aWriter, aParam.mWidth);
+    WriteParam(aWriter, aParam.mHeight);
+    WriteParam(aWriter, aParam.mNumberOfTemporalLayers);
+    WriteParam(aWriter, aParam.mMaxBitrate);
+    WriteParam(aWriter, aParam.mTargetBitrate);
+    WriteParam(aWriter, aParam.mMinBitrate);
+    WriteParam(aWriter, aParam.mQPMax);
+  }
+
+  static bool Read(MessageReader* aReader, paramType* aResult) {
+    if (ReadParam(aReader, &(aResult->mWidth)) &&
+        ReadParam(aReader, &(aResult->mHeight)) &&
+        ReadParam(aReader, &(aResult->mNumberOfTemporalLayers)) &&
+        ReadParam(aReader, &(aResult->mMaxBitrate)) &&
+        ReadParam(aReader, &(aResult->mTargetBitrate)) &&
+        ReadParam(aReader, &(aResult->mMinBitrate)) &&
+        ReadParam(aReader, &(aResult->mQPMax))) {
+      return true;
+    }
+    return false;
+  }
+};
+
+template <>
+struct ParamTraits<GMPVideoCodec> {
+  typedef GMPVideoCodec paramType;
+
+  static void Write(MessageWriter* aWriter, const paramType& aParam) {
+    WriteParam(aWriter, aParam.mGMPApiVersion);
+    WriteParam(aWriter, aParam.mCodecType);
+    WriteParam(aWriter, static_cast<const nsCString&>(
+                            nsDependentCString(aParam.mPLName)));
+    WriteParam(aWriter, aParam.mPLType);
+    WriteParam(aWriter, aParam.mWidth);
+    WriteParam(aWriter, aParam.mHeight);
+    WriteParam(aWriter, aParam.mStartBitrate);
+    WriteParam(aWriter, aParam.mMaxBitrate);
+    WriteParam(aWriter, aParam.mMinBitrate);
+    WriteParam(aWriter, aParam.mMaxFramerate);
+    WriteParam(aWriter, aParam.mFrameDroppingOn);
+    WriteParam(aWriter, aParam.mKeyFrameInterval);
+    WriteParam(aWriter, aParam.mQPMax);
+    WriteParam(aWriter, aParam.mNumberOfSimulcastStreams);
+    for (uint32_t i = 0; i < aParam.mNumberOfSimulcastStreams; i++) {
+      WriteParam(aWriter, aParam.mSimulcastStream[i]);
+    }
+    WriteParam(aWriter, aParam.mMode);
+    WriteParam(aWriter, aParam.mUseThreadedDecode);
+    WriteParam(aWriter, aParam.mLogLevel);
+  }
+
+  static bool Read(MessageReader* aReader, paramType* aResult) {
+    // NOTE: make sure this matches any versions supported
+    if (!ReadParam(aReader, &(aResult->mGMPApiVersion)) ||
+        (aResult->mGMPApiVersion != kGMPVersion33 &&
+         aResult->mGMPApiVersion != kGMPVersion34)) {
+      return false;
+    }
+    if (!ReadParam(aReader, &(aResult->mCodecType))) {
+      return false;
+    }
+
+    nsAutoCString plName;
+    if (!ReadParam(aReader, &plName) ||
+        plName.Length() > kGMPPayloadNameSize - 1) {
+      return false;
+    }
+    memcpy(aResult->mPLName, plName.get(), plName.Length());
+    memset(aResult->mPLName + plName.Length(), 0,
+           kGMPPayloadNameSize - plName.Length());
+
+    if (!ReadParam(aReader, &(aResult->mPLType)) ||
+        !ReadParam(aReader, &(aResult->mWidth)) ||
+        !ReadParam(aReader, &(aResult->mHeight)) ||
+        !ReadParam(aReader, &(aResult->mStartBitrate)) ||
+        !ReadParam(aReader, &(aResult->mMaxBitrate)) ||
+        !ReadParam(aReader, &(aResult->mMinBitrate)) ||
+        !ReadParam(aReader, &(aResult->mMaxFramerate)) ||
+        !ReadParam(aReader, &(aResult->mFrameDroppingOn)) ||
+        !ReadParam(aReader, &(aResult->mKeyFrameInterval))) {
+      return false;
+    }
+
+    if (!ReadParam(aReader, &(aResult->mQPMax)) ||
+        !ReadParam(aReader, &(aResult->mNumberOfSimulcastStreams))) {
+      return false;
+    }
+
+    if (aResult->mNumberOfSimulcastStreams > kGMPMaxSimulcastStreams) {
+      return false;
+    }
+
+    for (uint32_t i = 0; i < aResult->mNumberOfSimulcastStreams; i++) {
+      if (!ReadParam(aReader, &(aResult->mSimulcastStream[i]))) {
+        return false;
+      }
+    }
+
+    if (!ReadParam(aReader, &(aResult->mMode)) ||
+        !ReadParam(aReader, &(aResult->mUseThreadedDecode)) ||
+        !ReadParam(aReader, &(aResult->mLogLevel))) {
+      return false;
+    }
+
+    return true;
+  }
+};
+
+}  // namespace IPC
+
+#endif  // GMPMessageUtils_h_