Pepper: add PPB_VideoEncoder interface

ppapi/api/ppp_video_encoder.idl

+/* Copyright (c) 2014 The Chromium Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/**
+ * This file defines the API for receiving video bitstream buffers from the
+ * browser's video encoder.
+ */
+
+label Chrome {
+  [channel=dev] M37 = 0.1
+};
+
+/**
+ * Struct describing a video bitstream buffer. The plugin can determine which
+ * Encode call generated the buffer using |encode_id|.
+ */
+struct PP_VideoEncoderBitstreamBuffer {
+  /**
+   * |encode_id| parameter of the Encode call on the <code>PPB_VideoEncoder</code>
+   * interface which generated this buffer.
+   */
+  uint32_t encode_id;
+
+  /**
+   * Start address of buffer.
+   */
+  mem_t buffer;
+
+  /**
+   * Buffer size in bytes.
+   */
+  uint32_t size;
+
+  /**
+   * Whether the buffer contains a key frame.
+   */
+  PP_Bool key_frame;
+};
+
+[macro="PPP_VIDEOENCODER_INTERFACE"]
+interface PPP_VideoEncoder {
+  /**
+   * Function for receiving bitstream buffers.
+   *
+   * In order to receive bitstream, you must register for them by calling
+   * PPB_InputEvent.RequestInputEvents() or RequestFilteringInputEvents(). By
+   * default, no events are delivered.
+   *
+   * @param[in] instance A <code>PP_Instance</code> identifying one instance
+   * of a module.
+   * @param[in] encoder A <code>PP_Resource</code> identifying the encoder
+   * resource that produced the |buffer|.
+   * @param[in] biffer A <code>PP_VideoEncoderBitstreamBuffer> containing the
+   * encoder video stream.
+   */
+  void HandleBitstreamBuffer(
+      [in] PP_Instance instance,
+      [in] PP_Resource encoder,
+      [in] PP_VideoEncoderBitstreamBuffer buffer);
+};