Question

暂停ExoPlayer并将应用程序置于后台时，我总是收到错误消息。该流包含Widevine受保护的内容以及在服务器端插入的广告。我怀疑受保护内容和不受保护内容的混合会导致错误，但不知道从哪里开始。在未受保护的预贴式广告中，将应用置于后台并恢复运行实际上只能运行一次，但是在主要内容中第二次尝试时会失败。

SurfaceUtils记录以下消息：native window cannot handle protected buffers: the consumer should either be a hardware composer or support hardware protection。

有人知道这实际上意味着什么吗？不幸的是，我对ExoPlayer的内部运作不太熟悉。

SurfaceUtils.cpp中返回错误的代码在这里可能会有所帮助：

// Make sure to check whether either Stagefright or the video decoder
// requested protected buffers.
if (usage & GRALLOC_USAGE_PROTECTED) {
    // Check if the ANativeWindow sends images directly to SurfaceFlinger.
    int queuesToNativeWindow = 0;
    err = nativeWindow->query(
            nativeWindow, NATIVE_WINDOW_QUEUES_TO_WINDOW_COMPOSER, &queuesToNativeWindow);
    if (err != NO_ERROR) {
        ALOGE("error authenticating native window: %s (%d)", strerror(-err), -err);
        return err;
    }
    // Check if the consumer end of the ANativeWindow can handle protected content.
    int isConsumerProtected = 0;
    err = nativeWindow->query(
            nativeWindow, NATIVE_WINDOW_CONSUMER_IS_PROTECTED, &isConsumerProtected);
    if (err != NO_ERROR) {
        ALOGE("error query native window: %s (%d)", strerror(-err), -err);
        return err;
    }
    // Deny queuing into native window if neither condition is satisfied.
    if (queuesToNativeWindow != 1 && isConsumerProtected != 1) {
        ALOGE("native window cannot handle protected buffers: the consumer should either be a hardware composer or support hardware protection");
        return PERMISSION_DENIED;
    }
}

如何修复ExoPlayer错误“本地窗口无法处理受保护的缓冲区”

0 个答案: