使用 Linphone iOS SDK 启用视频通话答案

【问题标题】：Enable video calling with Linphone iOS SDK使用 Linphone iOS SDK 启用视频通话
【发布时间】：2018-07-18 17:38:18
【问题描述】：

我正在尝试使用 Linphone 在我的 swift 应用上启用视频通话。我能够启用音频通话，但无法使其与视频一起使用。如果我启用此行，应用程序总是崩溃：

linphone_call_params_enable_video(linCallParams, 1)

我只想在这里接收视频和音频。

@objc func startVideoCall() {

    linphone_core_enable_video_display(theLinphone.lc, 1)
    linphone_core_enable_video_capture(theLinphone.lc, 1)

    let linCallParams = linphone_core_create_call_params(theLinphone.lc, nil)
    linphone_call_params_enable_video(linCallParams, 1)

    linphone_call_params_set_video_direction(linCallParams, LinphoneMediaDirectionSendRecv)
    linphone_call_params_set_audio_direction(linCallParams, LinphoneMediaDirectionSendRecv)

    let call = linphone_core_invite_with_params(theLinphone.lc, calleeAccount, linCallParams)

    linphone_core_set_native_video_window_id(theLinphone.lc, &videoStreamView)
    linphone_core_set_native_preview_window_id(theLinphone.lc, &videoStreamPreview)

    do {
        try audioSession.setActive(true)
    } catch {
        print("Audio error: \(error.localizedDescription)")
    }
    linphone_call_params_unref(linCallParams)     
}

【问题讨论】：

标签： ios swift video video-streaming linphone

【解决方案1】：

此代码组合解决了我的问题

private func bridge<T: AnyObject>(obj : T) -> UnsafeRawPointer {
    let pointer = Unmanaged.passUnretained(obj).toOpaque()
    return UnsafeRawPointer(pointer)
}

let viewPointer = UnsafeMutableRawPointer(mutating: bridge(obj: view))
linphone_core_set_native_video_window_id(theLinphone.lc, viewPointer)
let previewPointer = UnsafeMutableRawPointer(mutating: bridge(obj: previewStream))
linphone_core_set_native_preview_window_id(theLinphone.lc, previewPointer)

【讨论】：