Video Capture Pepper API

ppapi/c/dev/ppp_video_capture_dev.h

+/* Copyright (c) 2011 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.
+ */
+#ifndef PPAPI_C_DEV_PPP_VIDEO_CAPTURE_DEV_H_
+#define PPAPI_C_DEV_PPP_VIDEO_CAPTURE_DEV_H_
+
+#include "ppapi/c/dev/pp_video_capture_dev.h"
+#include "ppapi/c/pp_instance.h"
+#include "ppapi/c/pp_resource.h"
+#include "ppapi/c/pp_stdint.h"
+
+#define PPP_VIDEO_CAPTURE_DEV_INTERFACE_0_1 "PPP_VideoCapture(Dev);0.1"
+#define PPP_VIDEO_CAPTURE_DEV_INTERFACE PPP_VIDEO_CAPTURE_DEV_INTERFACE_0_1
+
+/**
+ * Video Capture client interface. See |PPB_VideoCapture_Dev| for general theory
+ * of operation.
+ */
+struct PPP_VideoCapture_Dev {
+  /**
+   * Signals the capture device information, such as resolution and frame rate,
+   * and the array of buffers that the browser will use to send pixel data.
+   *
+   * |info| is a pointer to the PP_VideoCaptureDeviceInfo_Dev structure
+   * containing resolution and frame rate.
+   * |buffer_count| is the number of buffers, and |buffers| is the array of
+   * PPB_Buffer_Dev buffers.
+   *
+   * Note: the buffers are passed without an extra reference. The plugin is
+   * expected to add its own references to the buffers.
+   */
+  void (*OnDeviceInfo)(PP_Instance instance,
+                       PP_Resource video_capture,
+                       const struct PP_VideoCaptureDeviceInfo_Dev* info,
+                       uint32_t buffer_count,
+                       const PP_Resource* buffers);
+
+  /**
+   * Signals status changes on the VideoCapture. |status| is a
+   * one of the values from PP_VideoCaptureStatus_Dev;
+   */
+  void (*OnStatus)(PP_Instance instance,
+                   PP_Resource video_capture,
+                   uint32_t status);
+
+  /**
+   * Signals an error from the video capture system.
+   *
+   * Errors that can be generated:
+   * - PP_ERROR_NOMEMORY: not enough memory was available to allocate buffers.
+   * - PP_ERROR_FAILED: video capture could not start.
+   */
+  void (*OnError)(PP_Instance instance,
+                  PP_Resource video_capture,
+                  uint32_t error_code);
+
+  /**
+   * Signals that a buffer is available for consumption by the plugin.
+   *
+   * |buffer| is the index of the buffer, in the array returned by OnDeviceInfo.
+   */
+  void (*OnBufferReady)(PP_Instance,
+                        PP_Resource video_capture,
+                        uint32_t buffer);
+};
+
+#endif  /* PPAPI_C_DEV_PPP_VIDEO_CAPTURE_DEV_H_ */
+