Index: webrtc/api/video/i420_buffer.h |
diff --git a/webrtc/api/video/i420_buffer.h b/webrtc/api/video/i420_buffer.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..388a3dd76903ad9e8f24a7d841f6220c2d994a21 |
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+/* |
+ * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved. |
+ * |
+ * Use of this source code is governed by a BSD-style license |
+ * that can be found in the LICENSE file in the root of the source |
+ * tree. An additional intellectual property rights grant can be found |
+ * in the file PATENTS. All contributing project authors may |
+ * be found in the AUTHORS file in the root of the source tree. |
+ */ |
+ |
+#ifndef WEBRTC_API_VIDEO_I420_BUFFER_H_ |
+#define WEBRTC_API_VIDEO_I420_BUFFER_H_ |
+ |
+#include <memory> |
+ |
+#include "webrtc/api/video/video_rotation.h" |
+#include "webrtc/api/video/video_frame_buffer.h" |
+#include "webrtc/system_wrappers/include/aligned_malloc.h" |
+ |
+namespace webrtc { |
+ |
+// Plain I420 buffer in standard memory. |
+class I420Buffer : public VideoFrameBuffer { |
+ public: |
+ static rtc::scoped_refptr<I420Buffer> Create(int width, int height); |
+ static rtc::scoped_refptr<I420Buffer> Create(int width, |
+ int height, |
+ int stride_y, |
+ int stride_u, |
+ int stride_v); |
+ |
+ // Create a new buffer and copy the pixel data. |
+ static rtc::scoped_refptr<I420Buffer> Copy(const VideoFrameBuffer& buffer); |
+ |
+ static rtc::scoped_refptr<I420Buffer> Copy( |
+ int width, int height, |
+ const uint8_t* data_y, int stride_y, |
+ const uint8_t* data_u, int stride_u, |
+ const uint8_t* data_v, int stride_v); |
+ |
+ // Returns a rotated copy of |src|. |
+ static rtc::scoped_refptr<I420Buffer> Rotate(const VideoFrameBuffer& src, |
+ VideoRotation rotation); |
+ |
+ // Sets the buffer to all black. |
+ static void SetBlack(I420Buffer* buffer); |
+ |
+ // Sets all three planes to all zeros. Used to work around for |
+ // quirks in memory checkers |
+ // (https://bugs.chromium.org/p/libyuv/issues/detail?id=377) and |
+ // ffmpeg (http://crbug.com/390941). |
+ // TODO(nisse): Deprecated. Should be deleted if/when those issues |
+ // are resolved in a better way. Or in the mean time, use SetBlack. |
+ void InitializeData(); |
+ |
+ // TODO(nisse): Deprecated, use static method instead. |
+ void SetToBlack() { SetBlack(this); } |
+ |
+ int width() const override; |
+ int height() const override; |
+ const uint8_t* DataY() const override; |
+ const uint8_t* DataU() const override; |
+ const uint8_t* DataV() const override; |
+ |
+ int StrideY() const override; |
+ int StrideU() const override; |
+ int StrideV() const override; |
+ |
+ void* native_handle() const override; |
+ rtc::scoped_refptr<VideoFrameBuffer> NativeToI420Buffer() override; |
+ |
+ uint8_t* MutableDataY(); |
+ uint8_t* MutableDataU(); |
+ uint8_t* MutableDataV(); |
+ |
+ // Scale the cropped area of |src| to the size of |this| buffer, and |
+ // write the result into |this|. |
+ void CropAndScaleFrom(const VideoFrameBuffer& src, |
+ int offset_x, |
+ int offset_y, |
+ int crop_width, |
+ int crop_height); |
+ |
+ // The common case of a center crop, when needed to adjust the |
+ // aspect ratio without distorting the image. |
+ void CropAndScaleFrom(const VideoFrameBuffer& src); |
+ |
+ // Scale all of |src| to the size of |this| buffer, with no cropping. |
+ void ScaleFrom(const VideoFrameBuffer& src); |
+ |
+ // TODO(nisse): Deprecated, delete once downstream applications are updated. |
+ // Returns a rotated versions of |src|. Native buffers are not |
+ // supported. The reason this function doesn't return an I420Buffer, |
+ // is that it returns |src| unchanged in case |rotation| is zero. |
+ static rtc::scoped_refptr<VideoFrameBuffer> Rotate( |
+ rtc::scoped_refptr<VideoFrameBuffer> src, |
+ VideoRotation rotation); |
+ |
+ protected: |
+ I420Buffer(int width, int height); |
+ I420Buffer(int width, int height, int stride_y, int stride_u, int stride_v); |
+ |
+ ~I420Buffer() override; |
+ |
+ private: |
+ const int width_; |
+ const int height_; |
+ const int stride_y_; |
+ const int stride_u_; |
+ const int stride_v_; |
+ const std::unique_ptr<uint8_t, AlignedFreeDeleter> data_; |
+}; |
+ |
+} // namespace webrtc |
+ |
+#endif // WEBRTC_API_VIDEO_I420_BUFFER_H_ |