| /* |
| * Copyright (c) 2013 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 "modules/desktop_capture/desktop_frame.h" |
| |
| #include <utility> |
| |
| #include <string.h> |
| |
| #include "absl/memory/memory.h" |
| #include "modules/desktop_capture/desktop_geometry.h" |
| #include "rtc_base/checks.h" |
| |
| namespace webrtc { |
| |
| DesktopFrame::DesktopFrame(DesktopSize size, |
| int stride, |
| uint8_t* data, |
| SharedMemory* shared_memory) |
| : data_(data), |
| shared_memory_(shared_memory), |
| size_(size), |
| stride_(stride), |
| capture_time_ms_(0), |
| capturer_id_(DesktopCapturerId::kUnknown) { |
| RTC_DCHECK(size_.width() >= 0); |
| RTC_DCHECK(size_.height() >= 0); |
| } |
| |
| DesktopFrame::~DesktopFrame() = default; |
| |
| void DesktopFrame::CopyPixelsFrom(const uint8_t* src_buffer, |
| int src_stride, |
| const DesktopRect& dest_rect) { |
| RTC_CHECK(DesktopRect::MakeSize(size()).ContainsRect(dest_rect)); |
| |
| uint8_t* dest = GetFrameDataAtPos(dest_rect.top_left()); |
| for (int y = 0; y < dest_rect.height(); ++y) { |
| memcpy(dest, src_buffer, DesktopFrame::kBytesPerPixel * dest_rect.width()); |
| src_buffer += src_stride; |
| dest += stride(); |
| } |
| } |
| |
| void DesktopFrame::CopyPixelsFrom(const DesktopFrame& src_frame, |
| const DesktopVector& src_pos, |
| const DesktopRect& dest_rect) { |
| RTC_CHECK(DesktopRect::MakeSize(src_frame.size()) |
| .ContainsRect( |
| DesktopRect::MakeOriginSize(src_pos, dest_rect.size()))); |
| |
| CopyPixelsFrom(src_frame.GetFrameDataAtPos(src_pos), src_frame.stride(), |
| dest_rect); |
| } |
| |
| DesktopRect DesktopFrame::rect() const { |
| const float scale = scale_factor(); |
| // Only scale the size. |
| return DesktopRect::MakeXYWH(top_left().x(), top_left().y(), |
| size().width() / scale, size().height() / scale); |
| } |
| |
| float DesktopFrame::scale_factor() const { |
| float scale = 1.0f; |
| if (!dpi().is_zero() && dpi().x() == dpi().y()) |
| scale = dpi().x() / kStandardDPI; |
| |
| return scale; |
| } |
| |
| uint8_t* DesktopFrame::GetFrameDataAtPos(const DesktopVector& pos) const { |
| return data() + stride() * pos.y() + DesktopFrame::kBytesPerPixel * pos.x(); |
| } |
| |
| void DesktopFrame::CopyFrameInfoFrom(const DesktopFrame& other) { |
| set_dpi(other.dpi()); |
| set_capture_time_ms(other.capture_time_ms()); |
| set_capturer_id(other.capturer_id()); |
| *mutable_updated_region() = other.updated_region(); |
| set_top_left(other.top_left()); |
| } |
| |
| void DesktopFrame::MoveFrameInfoFrom(DesktopFrame* other) { |
| set_dpi(other->dpi()); |
| set_capture_time_ms(other->capture_time_ms()); |
| set_capturer_id(other->capturer_id()); |
| mutable_updated_region()->Swap(other->mutable_updated_region()); |
| set_top_left(other->top_left()); |
| } |
| |
| BasicDesktopFrame::BasicDesktopFrame(DesktopSize size) |
| : DesktopFrame(size, |
| kBytesPerPixel * size.width(), |
| new uint8_t[kBytesPerPixel * size.width() * size.height()], |
| nullptr) {} |
| |
| BasicDesktopFrame::~BasicDesktopFrame() { |
| delete[] data_; |
| } |
| |
| // static |
| DesktopFrame* BasicDesktopFrame::CopyOf(const DesktopFrame& frame) { |
| DesktopFrame* result = new BasicDesktopFrame(frame.size()); |
| for (int y = 0; y < frame.size().height(); ++y) { |
| memcpy(result->data() + y * result->stride(), |
| frame.data() + y * frame.stride(), |
| frame.size().width() * kBytesPerPixel); |
| } |
| result->CopyFrameInfoFrom(frame); |
| return result; |
| } |
| |
| // static |
| std::unique_ptr<DesktopFrame> SharedMemoryDesktopFrame::Create( |
| DesktopSize size, |
| SharedMemoryFactory* shared_memory_factory) { |
| RTC_DCHECK(shared_memory_factory); |
| |
| size_t buffer_size = size.height() * size.width() * kBytesPerPixel; |
| std::unique_ptr<SharedMemory> shared_memory = |
| shared_memory_factory->CreateSharedMemory(buffer_size); |
| if (!shared_memory) |
| return nullptr; |
| |
| return absl::make_unique<SharedMemoryDesktopFrame>( |
| size, size.width() * kBytesPerPixel, std::move(shared_memory)); |
| } |
| |
| SharedMemoryDesktopFrame::SharedMemoryDesktopFrame(DesktopSize size, |
| int stride, |
| SharedMemory* shared_memory) |
| : DesktopFrame(size, |
| stride, |
| reinterpret_cast<uint8_t*>(shared_memory->data()), |
| shared_memory) {} |
| |
| SharedMemoryDesktopFrame::SharedMemoryDesktopFrame( |
| DesktopSize size, |
| int stride, |
| std::unique_ptr<SharedMemory> shared_memory) |
| : SharedMemoryDesktopFrame(size, stride, shared_memory.release()) {} |
| |
| SharedMemoryDesktopFrame::~SharedMemoryDesktopFrame() { |
| delete shared_memory_; |
| } |
| |
| } // namespace webrtc |