1 files changed, 63 insertions, 0 deletions
diff --git a/image/encoders/webp/nsWebPEncoder.h b/image/encoders/webp/nsWebPEncoder.h
new file mode 100644
index 0000000000..8628d12388
--- /dev/null
+++ b/image/encoders/webp/nsWebPEncoder.h
@@ -0,0 +1,63 @@
+/* -*- 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 mozilla_image_encoders_webp_nsWebPEncoder_h
+#define mozilla_image_encoders_webp_nsWebPEncoder_h
+
+#include "webp/encode.h"
+
+#include "imgIEncoder.h"
+#include "nsCOMPtr.h"
+
+#include "mozilla/Attributes.h"
+#include "mozilla/ReentrantMonitor.h"
+
+#define NS_WEBPENCODER_CID                           \
+  { /* a8e5a8e5-bebf-4512-9f50-e41e4748ce28 */       \
+    0xa8e5a8e5, 0xbebf, 0x4512, {                    \
+      0x9f, 0x50, 0xe4, 0x1e, 0x47, 0x48, 0xce, 0x28 \
+    }                                                \
+  }
+
+// Provides WEBP encoding functionality. Use InitFromData() to do the
+// encoding. See that function definition for encoding options.
+
+class nsWebPEncoder final : public imgIEncoder {
+  typedef mozilla::ReentrantMonitor ReentrantMonitor;
+
+ public:
+  NS_DECL_THREADSAFE_ISUPPORTS
+  NS_DECL_IMGIENCODER
+  NS_DECL_NSIINPUTSTREAM
+  NS_DECL_NSIASYNCINPUTSTREAM
+
+  nsWebPEncoder();
+
+ protected:
+  ~nsWebPEncoder();
+
+  void NotifyListener();
+
+  bool mFinished;
+
+  // image buffer
+  uint8_t* mImageBuffer;
+  uint32_t mImageBufferSize;
+  uint32_t mImageBufferUsed;
+
+  uint32_t mImageBufferReadPoint;
+
+  nsCOMPtr<nsIInputStreamCallback> mCallback;
+  nsCOMPtr<nsIEventTarget> mCallbackTarget;
+  uint32_t mNotifyThreshold;
+
+  // nsWebPEncoder is designed to allow one thread to pump data into it while
+  // another reads from it.  We lock to ensure that the buffer remains
+  // append-only while we read from it (that it is not realloced) and to
+  // ensure that only one thread dispatches a callback for each call to
+  // AsyncWait.
+  ReentrantMonitor mReentrantMonitor MOZ_UNANNOTATED;
+};
+#endif  // mozilla_image_encoders_webp_nsWebPEncoder_h