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Diffstat (limited to '')
| -rw-r--r-- | third_party/libwebrtc/api/video/video_frame_buffer.cc | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/third_party/libwebrtc/api/video/video_frame_buffer.cc b/third_party/libwebrtc/api/video/video_frame_buffer.cc new file mode 100644 index 0000000000..374b438adc --- /dev/null +++ b/third_party/libwebrtc/api/video/video_frame_buffer.cc @@ -0,0 +1,242 @@ +/* + * Copyright (c) 2017 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. + */ + +#include "api/video/video_frame_buffer.h" + +#include "api/video/i420_buffer.h" +#include "api/video/i422_buffer.h" +#include "api/video/i444_buffer.h" +#include "api/video/nv12_buffer.h" +#include "rtc_base/checks.h" + +namespace webrtc { + +rtc::scoped_refptr<VideoFrameBuffer> VideoFrameBuffer::CropAndScale( + int offset_x, + int offset_y, + int crop_width, + int crop_height, + int scaled_width, + int scaled_height) { + rtc::scoped_refptr<I420Buffer> result = + I420Buffer::Create(scaled_width, scaled_height); + result->CropAndScaleFrom(*this->ToI420(), offset_x, offset_y, crop_width, + crop_height); + return result; +} + +const I420BufferInterface* VideoFrameBuffer::GetI420() const { + // Overridden by subclasses that can return an I420 buffer without any + // conversion, in particular, I420BufferInterface. + return nullptr; +} + +const I420ABufferInterface* VideoFrameBuffer::GetI420A() const { + RTC_CHECK(type() == Type::kI420A); + return static_cast<const I420ABufferInterface*>(this); +} + +const I444BufferInterface* VideoFrameBuffer::GetI444() const { + RTC_CHECK(type() == Type::kI444); + return static_cast<const I444BufferInterface*>(this); +} + +const I422BufferInterface* VideoFrameBuffer::GetI422() const { + RTC_CHECK(type() == Type::kI422); + return static_cast<const I422BufferInterface*>(this); +} + +const I010BufferInterface* VideoFrameBuffer::GetI010() const { + RTC_CHECK(type() == Type::kI010); + return static_cast<const I010BufferInterface*>(this); +} + +const I210BufferInterface* VideoFrameBuffer::GetI210() const { + RTC_CHECK(type() == Type::kI210); + return static_cast<const I210BufferInterface*>(this); +} + +const I410BufferInterface* VideoFrameBuffer::GetI410() const { + RTC_CHECK(type() == Type::kI410); + return static_cast<const I410BufferInterface*>(this); +} + +const NV12BufferInterface* VideoFrameBuffer::GetNV12() const { + RTC_CHECK(type() == Type::kNV12); + return static_cast<const NV12BufferInterface*>(this); +} + +rtc::scoped_refptr<VideoFrameBuffer> VideoFrameBuffer::GetMappedFrameBuffer( + rtc::ArrayView<Type> types) { + RTC_CHECK(type() == Type::kNative); + return nullptr; +} + +VideoFrameBuffer::Type I420BufferInterface::type() const { + return Type::kI420; +} + +const char* VideoFrameBufferTypeToString(VideoFrameBuffer::Type type) { + switch (type) { + case VideoFrameBuffer::Type::kNative: + return "kNative"; + case VideoFrameBuffer::Type::kI420: + return "kI420"; + case VideoFrameBuffer::Type::kI420A: + return "kI420A"; + case VideoFrameBuffer::Type::kI444: + return "kI444"; + case VideoFrameBuffer::Type::kI422: + return "kI422"; + case VideoFrameBuffer::Type::kI010: + return "kI010"; + case VideoFrameBuffer::Type::kI210: + return "kI210"; + case VideoFrameBuffer::Type::kI410: + return "kI410"; + case VideoFrameBuffer::Type::kNV12: + return "kNV12"; + default: + RTC_DCHECK_NOTREACHED(); + } +} + +int I420BufferInterface::ChromaWidth() const { + return (width() + 1) / 2; +} + +int I420BufferInterface::ChromaHeight() const { + return (height() + 1) / 2; +} + +rtc::scoped_refptr<I420BufferInterface> I420BufferInterface::ToI420() { + return rtc::scoped_refptr<I420BufferInterface>(this); +} + +const I420BufferInterface* I420BufferInterface::GetI420() const { + return this; +} + +VideoFrameBuffer::Type I420ABufferInterface::type() const { + return Type::kI420A; +} + +VideoFrameBuffer::Type I444BufferInterface::type() const { + return Type::kI444; +} + +int I444BufferInterface::ChromaWidth() const { + return width(); +} + +int I444BufferInterface::ChromaHeight() const { + return height(); +} + +rtc::scoped_refptr<VideoFrameBuffer> I444BufferInterface::CropAndScale( + int offset_x, + int offset_y, + int crop_width, + int crop_height, + int scaled_width, + int scaled_height) { + rtc::scoped_refptr<I444Buffer> result = + I444Buffer::Create(scaled_width, scaled_height); + result->CropAndScaleFrom(*this, offset_x, offset_y, crop_width, crop_height); + return result; +} + +VideoFrameBuffer::Type I422BufferInterface::type() const { + return Type::kI422; +} + +int I422BufferInterface::ChromaWidth() const { + return (width() + 1) / 2; +} + +int I422BufferInterface::ChromaHeight() const { + return height(); +} + +rtc::scoped_refptr<VideoFrameBuffer> I422BufferInterface::CropAndScale( + int offset_x, + int offset_y, + int crop_width, + int crop_height, + int scaled_width, + int scaled_height) { + rtc::scoped_refptr<I422Buffer> result = + I422Buffer::Create(scaled_width, scaled_height); + result->CropAndScaleFrom(*this, offset_x, offset_y, crop_width, crop_height); + return result; +} + +VideoFrameBuffer::Type I010BufferInterface::type() const { + return Type::kI010; +} + +int I010BufferInterface::ChromaWidth() const { + return (width() + 1) / 2; +} + +int I010BufferInterface::ChromaHeight() const { + return (height() + 1) / 2; +} + +VideoFrameBuffer::Type I210BufferInterface::type() const { + return Type::kI210; +} + +int I210BufferInterface::ChromaWidth() const { + return (width() + 1) / 2; +} + +int I210BufferInterface::ChromaHeight() const { + return height(); +} + +VideoFrameBuffer::Type I410BufferInterface::type() const { + return Type::kI410; +} + +int I410BufferInterface::ChromaWidth() const { + return width(); +} + +int I410BufferInterface::ChromaHeight() const { + return height(); +} + +VideoFrameBuffer::Type NV12BufferInterface::type() const { + return Type::kNV12; +} + +int NV12BufferInterface::ChromaWidth() const { + return (width() + 1) / 2; +} + +int NV12BufferInterface::ChromaHeight() const { + return (height() + 1) / 2; +} + +rtc::scoped_refptr<VideoFrameBuffer> NV12BufferInterface::CropAndScale( + int offset_x, + int offset_y, + int crop_width, + int crop_height, + int scaled_width, + int scaled_height) { + rtc::scoped_refptr<NV12Buffer> result = + NV12Buffer::Create(scaled_width, scaled_height); + result->CropAndScaleFrom(*this, offset_x, offset_y, crop_width, crop_height); + return result; +} + +} // namespace webrtc |