Merge "Add multi-display support for boot animation"

            dinfo.w, dinfo.h, PIXEL_FORMAT_RGB_565);

    SurfaceComposerClient::Transaction t;

    // this guest property specifies multi-display IDs to show the boot animation

    // multiple ids can be set with comma (,) as separator, for example:

    // setprop boot.animation.displays 19260422155234049,19261083906282754

    Vector<uint64_t> physicalDisplayIds;

    char displayValue[PROPERTY_VALUE_MAX] = "";

    property_get("boot.animation.displays", displayValue, "");

    bool isValid = displayValue[0] != '\0';

    if (isValid) {

        char *p = displayValue;

        while (*p) {

            if (!isdigit(*p) && *p != ',') {

                isValid = false;

                break;

            }

            p ++;

        }

        if (!isValid)

            SLOGE("Invalid syntax for the value of system prop: boot.animation.displays");

    }

    if (isValid) {

        std::istringstream stream(displayValue);

        for (PhysicalDisplayId id; stream >> id; ) {

            physicalDisplayIds.add(id);

            if (stream.peek() == ',')

                stream.ignore();

        }

        // In the case of multi-display, boot animation shows on the specified displays

        // in addition to the primary display

        auto ids = SurfaceComposerClient::getPhysicalDisplayIds();

        constexpr uint32_t LAYER_STACK = 0;

        for (auto id : physicalDisplayIds) {

            if (std::find(ids.begin(), ids.end(), id) != ids.end()) {

                sp<IBinder> token = SurfaceComposerClient::getPhysicalDisplayToken(id);

                if (token != nullptr)

                    t.setDisplayLayerStack(token, LAYER_STACK);

            }

        }

        t.setLayerStack(control, LAYER_STACK);

    }

    t.setLayer(control, 0x40000000)

        .apply();