3 files changed, 189 insertions, 0 deletions
diff --git a/dom/media/platforms/ffmpeg/ffvpx/FFVPXRuntimeLinker.cpp b/dom/media/platforms/ffmpeg/ffvpx/FFVPXRuntimeLinker.cpp
new file mode 100644
index 000000000..0e95e79e6
--- /dev/null
+++ b/dom/media/platforms/ffmpeg/ffvpx/FFVPXRuntimeLinker.cpp
@@ -0,0 +1,113 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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/. */
+
+#include "FFVPXRuntimeLinker.h"
+#include "FFmpegLibWrapper.h"
+#include "FFmpegLog.h"
+#include "nsIFile.h"
+#include "prmem.h"
+#include "prlink.h"
+
+// We use a known symbol located in lgpllibs to determine its location.
+// soundtouch happens to be always included in lgpllibs
+#include "soundtouch/SoundTouch.h"
+
+namespace mozilla
+{
+
+template <int V> class FFmpegDecoderModule
+{
+public:
+  static already_AddRefed<PlatformDecoderModule> Create(FFmpegLibWrapper*);
+};
+
+static FFmpegLibWrapper sFFVPXLib;
+
+FFVPXRuntimeLinker::LinkStatus FFVPXRuntimeLinker::sLinkStatus =
+  LinkStatus_INIT;
+
+static PRLibrary*
+MozAVLink(const char* aName)
+{
+  PRLibSpec lspec;
+  lspec.type = PR_LibSpec_Pathname;
+  lspec.value.pathname = aName;
+  PRLibrary* lib = PR_LoadLibraryWithFlags(lspec, PR_LD_NOW | PR_LD_LOCAL);
+  if (!lib) {
+    FFMPEG_LOG("unable to load library %s", aName);
+  }
+  return lib;
+}
+
+/* static */ bool
+FFVPXRuntimeLinker::Init()
+{
+  if (sLinkStatus) {
+    return sLinkStatus == LinkStatus_SUCCEEDED;
+  }
+
+  sLinkStatus = LinkStatus_FAILED;
+
+  // We retrieve the path of the lgpllibs library as this is where mozavcodec
+  // and mozavutil libs are located.
+  char* lgpllibsname = PR_GetLibraryName(nullptr, "lgpllibs");
+  if (!lgpllibsname) {
+    return false;
+  }
+  char* path =
+    PR_GetLibraryFilePathname(lgpllibsname,
+                              (PRFuncPtr)&soundtouch::SoundTouch::getVersionId);
+  PR_FreeLibraryName(lgpllibsname);
+  if (!path) {
+    return false;
+  }
+  nsCOMPtr<nsIFile> xulFile = do_CreateInstance(NS_LOCAL_FILE_CONTRACTID);
+  if (!xulFile ||
+      NS_FAILED(xulFile->InitWithNativePath(nsDependentCString(path)))) {
+    PR_Free(path);
+    return false;
+  }
+  PR_Free(path);
+
+  nsCOMPtr<nsIFile> rootDir;
+  if (NS_FAILED(xulFile->GetParent(getter_AddRefs(rootDir))) || !rootDir) {
+    return false;
+  }
+  nsAutoCString rootPath;
+  if (NS_FAILED(rootDir->GetNativePath(rootPath))) {
+    return false;
+  }
+
+  char* libname = NULL;
+  /* Get the platform-dependent library name of the module */
+  libname = PR_GetLibraryName(rootPath.get(), "mozavutil");
+  if (!libname) {
+    return false;
+  }
+  sFFVPXLib.mAVUtilLib = MozAVLink(libname);
+  PR_FreeLibraryName(libname);
+  libname = PR_GetLibraryName(rootPath.get(), "mozavcodec");
+  if (libname) {
+    sFFVPXLib.mAVCodecLib = MozAVLink(libname);
+    PR_FreeLibraryName(libname);
+  }
+  if (sFFVPXLib.Link() == FFmpegLibWrapper::LinkResult::Success) {
+    sLinkStatus = LinkStatus_SUCCEEDED;
+    return true;
+  }
+  return false;
+}
+
+/* static */ already_AddRefed<PlatformDecoderModule>
+FFVPXRuntimeLinker::CreateDecoderModule()
+{
+  if (!Init()) {
+    return nullptr;
+  }
+  return FFmpegDecoderModule<FFVPX_VERSION>::Create(&sFFVPXLib);
+}
+
+} // namespace mozilla
diff --git a/dom/media/platforms/ffmpeg/ffvpx/FFVPXRuntimeLinker.h b/dom/media/platforms/ffmpeg/ffvpx/FFVPXRuntimeLinker.h
new file mode 100644
index 000000000..f7592a751
--- /dev/null
+++ b/dom/media/platforms/ffmpeg/ffvpx/FFVPXRuntimeLinker.h
@@ -0,0 +1,31 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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 __FFVPXRuntimeLinker_h__
+#define __FFVPXRuntimeLinker_h__
+
+#include "PlatformDecoderModule.h"
+
+namespace mozilla
+{
+
+class FFVPXRuntimeLinker
+{
+public:
+  static bool Init();
+  static already_AddRefed<PlatformDecoderModule> CreateDecoderModule();
+
+private:
+  static enum LinkStatus {
+    LinkStatus_INIT = 0,
+    LinkStatus_FAILED,
+    LinkStatus_SUCCEEDED
+  } sLinkStatus;
+};
+
+}
+
+#endif /* __FFVPXRuntimeLinker_h__ */
diff --git a/dom/media/platforms/ffmpeg/ffvpx/moz.build b/dom/media/platforms/ffmpeg/ffvpx/moz.build
new file mode 100644
index 000000000..aee58b5b0
--- /dev/null
+++ b/dom/media/platforms/ffmpeg/ffvpx/moz.build
@@ -0,0 +1,45 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# 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/.
+
+LOCAL_INCLUDES += ['/xpcom/build']
+EXPORTS += [
+    'FFVPXRuntimeLinker.h',
+]
+
+UNIFIED_SOURCES += [
+    '../FFmpegAudioDecoder.cpp',
+    '../FFmpegDataDecoder.cpp',
+    '../FFmpegDecoderModule.cpp',
+    '../FFmpegVideoDecoder.cpp',
+]
+SOURCES += [
+    'FFVPXRuntimeLinker.cpp',
+]
+LOCAL_INCLUDES += [
+    '..',
+    '../ffmpeg57/include',
+]
+
+if CONFIG['OS_ARCH'] == 'WINNT':
+    LOCAL_INCLUDES += [
+        '../ffmpeg57/include',
+    ]
+
+if CONFIG['GNU_CXX']:
+  CXXFLAGS += [ '-Wno-deprecated-declarations' ]
+if CONFIG['CLANG_CXX']:
+  CXXFLAGS += [
+    '-Wno-unknown-attributes',
+  ]
+if CONFIG['_MSC_VER']:
+  CXXFLAGS += [
+    '-wd4996', # deprecated declaration
+  ]
+
+DEFINES['FFVPX_VERSION'] = 46465650
+DEFINES['USING_MOZFFVPX'] = True
+
+FINAL_LIBRARY = 'xul'