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f0be3bee1f
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}
111 lines
3.6 KiB
C++
111 lines
3.6 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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#include "modules/video_capture/linux/device_info_pipewire.h"
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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#include <vector>
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#include "modules/video_capture/video_capture.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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#include "modules/video_capture/video_capture_options.h"
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#include "rtc_base/logging.h"
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namespace webrtc {
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namespace videocapturemodule {
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DeviceInfoPipeWire::DeviceInfoPipeWire(VideoCaptureOptions* options)
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: DeviceInfoImpl(), pipewire_session_(options->pipewire_session()) {}
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int32_t DeviceInfoPipeWire::Init() {
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return 0;
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}
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DeviceInfoPipeWire::~DeviceInfoPipeWire() = default;
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uint32_t DeviceInfoPipeWire::NumberOfDevices() {
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return pipewire_session_->nodes().size();
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}
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int32_t DeviceInfoPipeWire::GetDeviceName(uint32_t deviceNumber,
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char* deviceNameUTF8,
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uint32_t deviceNameLength,
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char* deviceUniqueIdUTF8,
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uint32_t deviceUniqueIdUTF8Length,
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char* productUniqueIdUTF8,
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uint32_t productUniqueIdUTF8Length) {
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if (deviceNumber >= NumberOfDevices())
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return -1;
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const PipeWireNode& node = pipewire_session_->nodes().at(deviceNumber);
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if (deviceNameLength <= node.display_name().length()) {
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RTC_LOG(LS_INFO) << "deviceNameUTF8 buffer passed is too small";
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return -1;
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}
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if (deviceUniqueIdUTF8Length <= node.unique_id().length()) {
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RTC_LOG(LS_INFO) << "deviceUniqueIdUTF8 buffer passed is too small";
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return -1;
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}
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if (productUniqueIdUTF8 &&
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productUniqueIdUTF8Length <= node.model_id().length()) {
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RTC_LOG(LS_INFO) << "productUniqueIdUTF8 buffer passed is too small";
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return -1;
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}
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memset(deviceNameUTF8, 0, deviceNameLength);
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node.display_name().copy(deviceNameUTF8, deviceNameLength);
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memset(deviceUniqueIdUTF8, 0, deviceUniqueIdUTF8Length);
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node.unique_id().copy(deviceUniqueIdUTF8, deviceUniqueIdUTF8Length);
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if (productUniqueIdUTF8) {
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memset(productUniqueIdUTF8, 0, productUniqueIdUTF8Length);
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node.model_id().copy(productUniqueIdUTF8, productUniqueIdUTF8Length);
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}
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return 0;
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}
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int32_t DeviceInfoPipeWire::CreateCapabilityMap(
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const char* deviceUniqueIdUTF8) {
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for (auto& node : pipewire_session_->nodes()) {
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if (node.unique_id().compare(deviceUniqueIdUTF8) != 0)
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continue;
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_captureCapabilities = node.capabilities();
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_lastUsedDeviceNameLength = node.display_name().length();
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_lastUsedDeviceName = static_cast<char*>(
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realloc(_lastUsedDeviceName, _lastUsedDeviceNameLength + 1));
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memcpy(_lastUsedDeviceName, deviceUniqueIdUTF8,
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_lastUsedDeviceNameLength + 1);
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return _captureCapabilities.size();
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}
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return -1;
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}
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int32_t DeviceInfoPipeWire::DisplayCaptureSettingsDialogBox(
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const char* /*deviceUniqueIdUTF8*/,
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const char* /*dialogTitleUTF8*/,
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void* /*parentWindow*/,
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uint32_t /*positionX*/,
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uint32_t /*positionY*/) {
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return -1;
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}
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} // namespace videocapturemodule
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} // namespace webrtc
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