webrtc/modules/video_capture/linux/video_capture_linux.cc
Michael Olbrich f0be3bee1f Add pipewire/portal video capture support
This makes it possible to access cameras through xdg-desktop-portal and
pipewire.

For pipewire, a shared state is needed between the enumeration and the
creation of camera object. So a new API is needed with a shared options
object that holds the state and can be used to choose which backend to try.

Bug: webrtc:13177
Change-Id: Iaad2333b41e4e6fb112f4558ea4b623e59afcbd1
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/261620
Reviewed-by: Alexander Cooper <alcooper@chromium.org>
Commit-Queue: Alexander Cooper <alcooper@chromium.org>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#39251}
2023-02-02 17:20:04 +00:00

68 lines
2 KiB
C++

/*
* Copyright (c) 2012 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 <errno.h>
#include <fcntl.h>
#include <linux/videodev2.h>
#include <stdio.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/select.h>
#include <time.h>
#include <unistd.h>
#include <new>
#include <string>
#include "api/scoped_refptr.h"
#include "media/base/video_common.h"
#if defined(WEBRTC_USE_PIPEWIRE)
#include "modules/video_capture/linux/video_capture_pipewire.h"
#endif
#include "modules/video_capture/linux/video_capture_v4l2.h"
#include "modules/video_capture/video_capture.h"
#include "modules/video_capture/video_capture_options.h"
#include "rtc_base/logging.h"
namespace webrtc {
namespace videocapturemodule {
rtc::scoped_refptr<VideoCaptureModule> VideoCaptureImpl::Create(
const char* deviceUniqueId) {
auto implementation = rtc::make_ref_counted<VideoCaptureModuleV4L2>();
if (implementation->Init(deviceUniqueId) != 0)
return nullptr;
return implementation;
}
rtc::scoped_refptr<VideoCaptureModule> VideoCaptureImpl::Create(
VideoCaptureOptions* options,
const char* deviceUniqueId) {
#if defined(WEBRTC_USE_PIPEWIRE)
if (options->allow_pipewire()) {
auto implementation =
rtc::make_ref_counted<VideoCaptureModulePipeWire>(options);
if (implementation->Init(deviceUniqueId) == 0)
return implementation;
}
#endif
if (options->allow_v4l2()) {
auto implementation = rtc::make_ref_counted<VideoCaptureModuleV4L2>();
if (implementation->Init(deviceUniqueId) == 0)
return implementation;
}
return nullptr;
}
} // namespace videocapturemodule
} // namespace webrtc