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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}
57 lines
2.1 KiB
C++
57 lines
2.1 KiB
C++
/*
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* Copyright (c) 2022 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef MODULES_VIDEO_CAPTURE_LINUX_VIDEO_CAPTURE_PIPEWIRE_H_
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#define MODULES_VIDEO_CAPTURE_LINUX_VIDEO_CAPTURE_PIPEWIRE_H_
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#include "modules/video_capture/linux/pipewire_session.h"
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#include "modules/video_capture/video_capture_defines.h"
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#include "modules/video_capture/video_capture_impl.h"
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namespace webrtc {
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namespace videocapturemodule {
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class VideoCaptureModulePipeWire : public VideoCaptureImpl {
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public:
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explicit VideoCaptureModulePipeWire(VideoCaptureOptions* options);
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~VideoCaptureModulePipeWire() override;
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int32_t Init(const char* deviceUniqueId);
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int32_t StartCapture(const VideoCaptureCapability& capability) override;
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int32_t StopCapture() override;
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bool CaptureStarted() override;
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int32_t CaptureSettings(VideoCaptureCapability& settings) override;
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static VideoType PipeWireRawFormatToVideoType(uint32_t format);
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private:
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static void OnStreamParamChanged(void* data,
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uint32_t id,
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const struct spa_pod* format);
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static void OnStreamStateChanged(void* data,
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pw_stream_state old_state,
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pw_stream_state state,
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const char* error_message);
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static void OnStreamProcess(void* data);
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void OnFormatChanged(const struct spa_pod* format);
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void ProcessBuffers();
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rtc::scoped_refptr<PipeWireSession> session_;
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int node_id_;
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VideoCaptureCapability frameInfo_;
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bool started_;
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struct pw_stream* stream_;
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struct spa_hook stream_listener_;
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};
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} // namespace videocapturemodule
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} // namespace webrtc
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#endif // MODULES_VIDEO_CAPTURE_LINUX_VIDEO_CAPTURE_PIPEWIRE_H_
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