38e9b06151
(Reland with no changes after the fix to the downstream project) This can be overriden for kNative frame types to perform scaling efficiently. Default implementations for existing buffer types require actual buffer implementation, thus this CL also merges "video_frame" with "video_frame_I420" build targets. Originally Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/186303 (Landing with TBR as it's unchaged reland of already approved CL) TBR=nisse@webrtc.org,sakal@webrtc.org Bug: webrtc:11976, chromium:1132299 Change-Id: Ia23f7d3e474bd9cdc177104cc5c6d772f04b210f Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/187345 Commit-Queue: Ilya Nikolaevskiy <ilnik@webrtc.org> Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Stefan Holmer <stefan@webrtc.org> Cr-Commit-Position: refs/heads/master@{#32362}
86 lines
2.7 KiB
C++
86 lines
2.7 KiB
C++
/*
|
|
* Copyright (c) 2020 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 API_VIDEO_NV12_BUFFER_H_
|
|
#define API_VIDEO_NV12_BUFFER_H_
|
|
|
|
#include <memory>
|
|
#include <utility>
|
|
|
|
#include "api/scoped_refptr.h"
|
|
#include "api/video/video_frame_buffer.h"
|
|
#include "rtc_base/memory/aligned_malloc.h"
|
|
#include "rtc_base/system/rtc_export.h"
|
|
|
|
namespace webrtc {
|
|
|
|
// NV12 is a biplanar encoding format, with full-resolution Y and
|
|
// half-resolution interleved UV. More information can be found at
|
|
// http://msdn.microsoft.com/library/windows/desktop/dd206750.aspx#nv12.
|
|
class RTC_EXPORT NV12Buffer : public NV12BufferInterface {
|
|
public:
|
|
static rtc::scoped_refptr<NV12Buffer> Create(int width, int height);
|
|
static rtc::scoped_refptr<NV12Buffer> Create(int width,
|
|
int height,
|
|
int stride_y,
|
|
int stride_uv);
|
|
static rtc::scoped_refptr<NV12Buffer> Copy(
|
|
const I420BufferInterface& i420_buffer);
|
|
|
|
rtc::scoped_refptr<I420BufferInterface> ToI420() override;
|
|
|
|
int width() const override;
|
|
int height() const override;
|
|
|
|
int StrideY() const override;
|
|
int StrideUV() const override;
|
|
|
|
const uint8_t* DataY() const override;
|
|
const uint8_t* DataUV() const override;
|
|
|
|
uint8_t* MutableDataY();
|
|
uint8_t* MutableDataUV();
|
|
|
|
// 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();
|
|
|
|
// Scale the cropped area of |src| to the size of |this| buffer, and
|
|
// write the result into |this|.
|
|
void CropAndScaleFrom(const NV12BufferInterface& src,
|
|
int offset_x,
|
|
int offset_y,
|
|
int crop_width,
|
|
int crop_height);
|
|
|
|
protected:
|
|
NV12Buffer(int width, int height);
|
|
NV12Buffer(int width, int height, int stride_y, int stride_uv);
|
|
|
|
~NV12Buffer() override;
|
|
|
|
private:
|
|
size_t UVOffset() const;
|
|
|
|
const int width_;
|
|
const int height_;
|
|
const int stride_y_;
|
|
const int stride_uv_;
|
|
const std::unique_ptr<uint8_t, AlignedFreeDeleter> data_;
|
|
};
|
|
|
|
} // namespace webrtc
|
|
|
|
#endif // API_VIDEO_NV12_BUFFER_H_
|