Merge "audio policy: clean up checking for active input" into lmp-dev

    }

    sp<AudioInputDescriptor> inputDesc = mInputs.valueAt(index);

#ifdef AUDIO_POLICY_TEST

    if (mTestInput == 0)

#endif //AUDIO_POLICY_TEST

    {

        // refuse 2 active AudioRecord clients at the same time except if the active input

        // uses AUDIO_SOURCE_HOTWORD in which case it is closed.

    // virtual input devices are compatible with other input devices

    if (!isVirtualInputDevice(inputDesc->mDevice)) {

        // for a non-virtual input device, check if there is another (non-virtual) active input

        audio_io_handle_t activeInput = getActiveInput();

        if (!isVirtualInputDevice(inputDesc->mDevice) && activeInput != 0) {

        if (activeInput != 0 && activeInput != input) {

            // If the already active input uses AUDIO_SOURCE_HOTWORD then it is closed,

            // otherwise the active input continues and the new input cannot be started.

            sp<AudioInputDescriptor> activeDesc = mInputs.valueFor(activeInput);

            if (activeDesc->mInputSource == AUDIO_SOURCE_HOTWORD) {

                ALOGW("startInput() preempting already started low-priority input %d", activeInput);

                ALOGW("startInput(%d) preempting low-priority input %d", input, activeInput);

                stopInput(activeInput);

                releaseInput(activeInput);

            } else {

                ALOGW("startInput() input %d failed: other input already started", input);

                ALOGE("startInput(%d) failed: other input %d already started", input, activeInput);

                return INVALID_OPERATION;

            }

        }

    }

    if (inputDesc->mRefCount == 0) {

        setInputDevice(input, getNewInputDevice(input), true /* force */);

    // automatically enable the remote submix output when input is started

        // Automatically enable the remote submix output when input is started.

        // For remote submix (a virtual device), we open only one input per capture request.

        if (audio_is_remote_submix_device(inputDesc->mDevice)) {

            setDeviceConnectionState(AUDIO_DEVICE_OUT_REMOTE_SUBMIX,

                    AUDIO_POLICY_DEVICE_STATE_AVAILABLE, AUDIO_REMOTE_SUBMIX_DEVICE_ADDRESS);

        }

    }

    ALOGV("AudioPolicyManager::startInput() input source = %d", inputDesc->mInputSource);