[PPAPI] API definition for video media stream artifacts

ppapi/api/ppb_video_frame.idl

+/* Copyright (c) 2013 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.
+ */
+
+/**
+ * Defines the <code>PPB_VideoFrame</code> interface.
+ */
+label Chrome {
+  [channel=dev] M34 = 0.1
+};
+
+enum PP_VideoFrame_Format {
+  /**
+   * Unknown format value.
+   */
+  PP_VIDEOFRAME_FORMAT_UNKNOWN = 0,
+
+  /**
+   * 12bpp YVU planar 1x1 Y, 2x2 VU samples.
+   */
+  PP_VIDEOFRAME_FORMAT_YV12 = 1,
+
+  /**
+   * 16bpp YVU planar 1x1 Y, 2x1 VU samples.
+   */
+  PP_VIDEOFRAME_FORMAT_YV16 = 2,
+
+  /**
+   * 12bpp YVU planar 1x1 Y, 2x2 VU samples.
+   */
+  PP_VIDEOFRAME_FORMAT_I420 = 3,
+
+  /**
+   * 20bpp YVU planar 1x1 Y, 2x2 VU, 1x1 A samples.
+   */
+  PP_VIDEOFRAME_FORMAT_YV12A = 4,
+
+  /**
+   * JPEG color range version of YV12.
+   */
+  PP_VIDEOFRAME_FORMAT_YV12J = 5
+};
+
+interface PPB_VideoFrame {
+  /**
+   * Determines if a resource is a VideoFrame resource.
+   *
+   * @param[in] resource The <code>PP_Resource</code> to test.
+   *
+   * @return A <code>PP_Bool</code> with <code>PP_TRUE</code> if the given
+   * resource is a VideoFrame resource or <code>PP_FALSE</code> otherwise.
+   */
+  PP_Bool IsVideoFrame([in] PP_Resource resource);
+
+  /**
+   * Gets timestamp of the video frame.
+   *
+   * @param[in] frame A <code>PP_Resource</code> corresponding to a video frame
+   * resource.
+   *
+   * @return A <code>PP_TimeDelta</code> containing timestamp of the video
+   * frame. Given in seconds since the start of the containing video stream.
+   */
+  PP_TimeDelta GetTimestamp([in] PP_Resource frame);
+
+  /**
+   * Sets the timestamp of the video frame. Given in seconds since the
+   * start of the containing video stream.
+   *
+   * @param[in] frame A <code>PP_Resource</code> corresponding to a video frame
+   * resource.
+   * @param[in] timestamp A <code>PP_TimeDelta</code> containing the timestamp
+   * of the video frame. Given in seconds since the start of the containing
+   * video stream.
+   */
+  void SetTimestamp([in] PP_Resource frame, [in] PP_TimeDelta timestamp);
+
+  /**
+   * Gets format of the video frame.
+   *
+   * @param[in] frame A <code>PP_Resource</code> corresponding to a video frame
+   * resource.
+   *
+   * @return A <code>PP_VideoFrame_Format</code> containing the format of the
+   * video frame.
+   */
+  PP_VideoFrame_Format GetFormat([in] PP_Resource frame);
+
+  /**
+   * Gets size of the video frame.
+   *
+   * @param[in] frame A <code>PP_Resource</code> corresponding to a video frame
+   * resource.
+   * @param[out] size A <code>PP_Size</code>

[yzshen1, 2013/12/26 17:52:22]

nit: Add trailing '.', please.

[Peng, 2013/12/26 18:33:41]

Done.

+   *
+   * @return A <code>PP_Bool</code> with <code>PP_TRUE</code> if gets size

[yzshen1, 2013/12/26 17:52:22]

nit: maybe we could consider
"A <code>PP_Bool</code> with <code>PP_TRUE</code> on success or
<code>PP_FALSE</code> on failure."

[Peng, 2013/12/26 18:33:41]

Done.

+   * successfully, otherwise <code>PP_FALSE</code>  is returned.

[yzshen1, 2013/12/26 17:52:22]

extra space before 'is'.

[Peng, 2013/12/26 18:33:41]

Done.

+   */
+  PP_Bool GetSize([in] PP_Resource frame, [out] PP_Size size);
+
+  /**
+   * Gets data buffer for video frame pixels.
+   *
+   * @param[in] frame A <code>PP_Resource</code> corresponding to a video frame
+   * resource.
+   *
+   * @return A pointer to the beginning of data buffer.
+   */
+  mem_t GetDataBuffer([in] PP_Resource frame);
+
+  /**
+   * Gets size of data buffer.
+   *
+   * @param[in] frame A <code>PP_Resource</code> corresponding to a video frame
+   * resource.
+   *
+   * @return The size of the data buffer.
+   */
+  uint32_t GetDataBufferSize([in] PP_Resource frame);
+};