e1e05afec7
This is a reland of f2177f6612079ccce9c320ea7e77bc934c684f5c Original change's description: > PipeWire capturer: implement proper DMA-BUFs support > > Currently both KWin (KDE) and Mutter (GNOME) window managers don't > use DMA-BUFs by default, but only when client asks specifically for > them (KWin) or when experimental DMA-BUF support is enabled (Mutter). > While current implementation works just fine on integrated graphics > cards, it causes issues on dedicated GPUs (AMD and NVidia) where the > code either crashes or screensharing is slow and unusable. > > To fix this, DMA-BUFs has to be opened using OpenGL context and not > being directly mmaped(). This implementation requires to use DMA-BUF > modifiers, as they are now mandatory for DMA-BUFs usage. > > Documentation for this behavior can be found here: > https://gitlab.freedesktop.org/pipewire/pipewire/-/blob/master/doc/dma-buf.dox > > Bug: chromium:1233417 > Change-Id: I0cecf16d6bb0f576954b9e8f071cab526f7baf2c > Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/227022 > Commit-Queue: Tommi <tommi@webrtc.org> > Reviewed-by: Tommi <tommi@webrtc.org> > Reviewed-by: Erik Språng <sprang@webrtc.org> > Cr-Commit-Position: refs/heads/main@{#34889} Bug: chromium:1233417 Change-Id: I308501d86ec18ab6df9bcee569c4b72df7926549 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/231180 Reviewed-by: Erik Språng <sprang@webrtc.org> Reviewed-by: Tommi <tommi@webrtc.org> Commit-Queue: Tommi <tommi@webrtc.org> Cr-Commit-Position: refs/heads/main@{#35152}
62 lines
1.8 KiB
C++
62 lines
1.8 KiB
C++
/*
|
|
* Copyright 2021 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 MODULES_DESKTOP_CAPTURE_LINUX_EGL_DMABUF_H_
|
|
#define MODULES_DESKTOP_CAPTURE_LINUX_EGL_DMABUF_H_
|
|
|
|
#include <epoxy/egl.h>
|
|
#include <epoxy/gl.h>
|
|
#include <gbm.h>
|
|
|
|
#include <memory>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#include "absl/types/optional.h"
|
|
#include "modules/desktop_capture/desktop_geometry.h"
|
|
|
|
namespace webrtc {
|
|
|
|
class EglDmaBuf {
|
|
public:
|
|
struct EGLStruct {
|
|
std::vector<std::string> extensions;
|
|
EGLDisplay display = EGL_NO_DISPLAY;
|
|
EGLContext context = EGL_NO_CONTEXT;
|
|
};
|
|
|
|
EglDmaBuf();
|
|
~EglDmaBuf();
|
|
|
|
std::unique_ptr<uint8_t[]> ImageFromDmaBuf(const DesktopSize& size,
|
|
uint32_t format,
|
|
uint32_t n_planes,
|
|
const int32_t* fds,
|
|
const uint32_t* strides,
|
|
const uint32_t* offsets,
|
|
uint64_t modifiers);
|
|
std::vector<uint64_t> QueryDmaBufModifiers(uint32_t format);
|
|
|
|
bool IsEglInitialized() const { return egl_initialized_; }
|
|
|
|
private:
|
|
bool egl_initialized_ = false;
|
|
int32_t drm_fd_ = -1; // for GBM buffer mmap
|
|
gbm_device* gbm_device_ = nullptr; // for passed GBM buffer retrieval
|
|
|
|
EGLStruct egl_;
|
|
|
|
absl::optional<std::string> GetRenderNode();
|
|
};
|
|
|
|
} // namespace webrtc
|
|
|
|
#endif // MODULES_DESKTOP_CAPTURE_LINUX_EGL_DMABUF_H_
|