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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /third_party/libwebrtc/api/video/nv12_buffer.h | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/libwebrtc/api/video/nv12_buffer.h')
-rw-r--r-- | third_party/libwebrtc/api/video/nv12_buffer.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/third_party/libwebrtc/api/video/nv12_buffer.h b/third_party/libwebrtc/api/video/nv12_buffer.h new file mode 100644 index 0000000000..46a85f82e1 --- /dev/null +++ b/third_party/libwebrtc/api/video/nv12_buffer.h @@ -0,0 +1,85 @@ +/* + * 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(https://crbug.com/390941): 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_ |