1 files changed, 87 insertions, 0 deletions
diff --git a/dom/media/webm/WebMWriter.cpp b/dom/media/webm/WebMWriter.cpp
new file mode 100644
index 000000000..a98a14f4e
--- /dev/null
+++ b/dom/media/webm/WebMWriter.cpp
@@ -0,0 +1,87 @@
+/* -*- 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/. */
+
+#include "WebMWriter.h"
+#include "EbmlComposer.h"
+#include "GeckoProfiler.h"
+#include "OpusTrackEncoder.h"
+
+namespace mozilla {
+
+WebMWriter::WebMWriter(uint32_t aTrackTypes) : ContainerWriter()
+{
+  mMetadataRequiredFlag = aTrackTypes;
+  mEbmlComposer = new EbmlComposer();
+}
+
+WebMWriter::~WebMWriter()
+{
+  // Out-of-line dtor so mEbmlComposer nsAutoPtr can delete a complete type.
+}
+
+nsresult
+WebMWriter::WriteEncodedTrack(const EncodedFrameContainer& aData,
+                              uint32_t aFlags)
+{
+  PROFILER_LABEL("WebMWriter", "SetMetadata",
+    js::ProfileEntry::Category::OTHER);
+  for (uint32_t i = 0 ; i < aData.GetEncodedFrames().Length(); i++) {
+    mEbmlComposer->WriteSimpleBlock(aData.GetEncodedFrames().ElementAt(i).get());
+  }
+  return NS_OK;
+}
+
+nsresult
+WebMWriter::GetContainerData(nsTArray<nsTArray<uint8_t> >* aOutputBufs,
+                             uint32_t aFlags)
+{
+  PROFILER_LABEL("WebMWriter", "GetContainerData",
+    js::ProfileEntry::Category::OTHER);
+  mEbmlComposer->ExtractBuffer(aOutputBufs, aFlags);
+  if (aFlags & ContainerWriter::FLUSH_NEEDED) {
+    mIsWritingComplete = true;
+  }
+  return NS_OK;
+}
+
+nsresult
+WebMWriter::SetMetadata(TrackMetadataBase* aMetadata)
+{
+  MOZ_ASSERT(aMetadata);
+  PROFILER_LABEL("WebMWriter", "SetMetadata",
+    js::ProfileEntry::Category::OTHER);
+
+  if (aMetadata->GetKind() == TrackMetadataBase::METADATA_VP8) {
+    VP8Metadata* meta = static_cast<VP8Metadata*>(aMetadata);
+    MOZ_ASSERT(meta, "Cannot find vp8 encoder metadata");
+    mEbmlComposer->SetVideoConfig(meta->mWidth, meta->mHeight,
+                                  meta->mDisplayWidth, meta->mDisplayHeight,
+                                  meta->mEncodedFrameRate);
+    mMetadataRequiredFlag = mMetadataRequiredFlag & ~ContainerWriter::CREATE_VIDEO_TRACK;
+  }
+
+  if (aMetadata->GetKind() == TrackMetadataBase::METADATA_VORBIS) {
+    VorbisMetadata* meta = static_cast<VorbisMetadata*>(aMetadata);
+    MOZ_ASSERT(meta, "Cannot find vorbis encoder metadata");
+    mEbmlComposer->SetAudioConfig(meta->mSamplingFrequency, meta->mChannels);
+    mEbmlComposer->SetAudioCodecPrivateData(meta->mData);
+    mMetadataRequiredFlag = mMetadataRequiredFlag & ~ContainerWriter::CREATE_AUDIO_TRACK;
+  }
+
+  if (aMetadata->GetKind() == TrackMetadataBase::METADATA_OPUS) {
+    OpusMetadata* meta = static_cast<OpusMetadata*>(aMetadata);
+    MOZ_ASSERT(meta, "Cannot find Opus encoder metadata");
+    mEbmlComposer->SetAudioConfig(meta->mSamplingFrequency, meta->mChannels);
+    mEbmlComposer->SetAudioCodecPrivateData(meta->mIdHeader);
+    mMetadataRequiredFlag = mMetadataRequiredFlag & ~ContainerWriter::CREATE_AUDIO_TRACK;
+  }
+
+  if (!mMetadataRequiredFlag) {
+    mEbmlComposer->GenerateHeader();
+  }
+  return NS_OK;
+}
+
+} // namespace mozilla