avplayer binding

[shshshdy]

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[WCKYWCKF]

这些绑定经过真机测试码？据我们所知，Marshall.GetFunctionPointerForDelegate是无法在除鸿蒙PC和模拟器以外的鸿蒙系统中工作的

[WCKYWCKF]

存疑

[shshshdy]

我真机测试的，可以

[WCKYWCKF]

你有使用这个回调码？如何使用的？

[shshshdy]

调用的另外一个，这个可以

public unsafe delegate void OH_AVPlayerOnErrorCallback(OH_AVPlayer* player, int errorCode, nint errorMsg, void* userData);

[shshshdy]

那个应该是api12开始废弃的接口没测试

[WCKYWCKF]

除了鸿蒙PC和模拟器外鸿蒙不允许为匿名内存申请执行权限。你是怎么使用的这些delegate 声明的回调？

[shshshdy]

private void PlaySound(string url)
{
    _player = OH_AVPlayer.OH_AVPlayer_Create();
    OH_AVPlayerOnErrorCallback callback = (p, error, msg, userdata) =>
    {
        Logger.LogError("music", "error:" + error + "  " + Marshal.PtrToStringAnsi(msg));
    };
    var back = Marshal.GetFunctionPointerForDelegate(callback);
    var code = OH_AVPlayer.OH_AVPlayer_SetOnErrorCallback(_player, back, IntPtr.Zero);
    if (code != OH_AVErrCode.AV_ERR_OK)
    {
        Logger.LogError("music", "errorCallBack " + code);
    }
    OH_AVPlayerOnInfoCallback infoback = (p, type, body, userdata) =>
    {
        Logger.Log("music", "type:" + type);
    };
    var infoBack = Marshal.GetFunctionPointerForDelegate(infoback);
    code = OH_AVPlayer.OH_AVPlayer_SetOnInfoCallback(_player, infoBack, IntPtr.Zero);
    if (code != OH_AVErrCode.AV_ERR_OK)
    {
        Logger.LogError("music", "infoCallBack " + code);
    }
    code = OH_AVPlayer.OH_AVPlayer_SetURLSource(_player, url);
    if (code != OH_AVErrCode.AV_ERR_OK)
    {
        Logger.LogError("music", "url " + code);
    }
    code = OH_AVPlayer.OH_AVPlayer_SetAudioRendererInfo(_player, OH_AudioStream_Usage.AUDIOSTREAM_USAGE_GAME);
    if (code != OH_AVErrCode.AV_ERR_OK)
    {
        Logger.LogError("music", "render " + code);
    }
    code = OH_AVPlayer.OH_AVPlayer_SetLooping(_player, OpenHarmony.NDK.Bindings.OH_Bool.True);
    if (code != OH_AVErrCode.AV_ERR_OK)
    {
        Logger.LogError("music", "loop " + code);
    }

    code = OH_AVPlayer.OH_AVPlayer_Prepare(_player);
    if (code != OH_AVErrCode.AV_ERR_OK)
    {
        Logger.LogError("music", "prepare " + code);
    }
    int duration = 0;
    code = OH_AVPlayer.OH_AVPlayer_GetDuration(_player, &duration);
    if (code != OH_AVErrCode.AV_ERR_OK)
    {
        Logger.LogError("music", "GetDuration " + code);
    }
    else
    {
        Logger.Log("music", "duration:" + duration);
    }
    code = OH_AVPlayer.OH_AVPlayer_Play(_player);
    if (code != OH_AVErrCode.AV_ERR_OK)
    {
        Logger.LogError("music", "play " + code);
    }
}

这么写的

[shshshdy]

真机日志

[WCKYWCKF]

不建议将这部分代码提交到仓库中，因为我们将在Marshall问题解决之后通过工具重新生成所有NDK能力的C API绑定。建议将这部分代码暂时的库嵌入到项目中，以免被中断性变更影响项目开发。你可以订阅组织的Discussions获得版本发布通知，届时再依赖OpenHarmony.NDK.Bindings也不迟。