Merge "MTP: Add hard coded support to recognize a couple MTP music players for testing purposes."

namespace android {

static bool isMtpDevice(uint16_t vendor, uint16_t product) {

    // Sandisk Sansa Fuze

    if (vendor == 0x0781 && product == 0x74c2)

        return true;

    // Samsung YP-Z5

    if (vendor == 0x04e8 && product == 0x503c)

        return true;

    return false;

}

class MtpClientThread : public Thread {

private:

    MtpClient*   mClient;

                LOGD("Found MTP device: \"%s\" \"%s\"\n", usb_device_get_manufacturer_name(device),

                        usb_device_get_product_name(device));

            } else {

                // look for special cased devices based on vendor/product ID

                // we are doing this mainly for testing purposes

                uint16_t vendor = usb_device_get_vendor_id(device);

                uint16_t product = usb_device_get_product_id(device);

                if (!isMtpDevice(vendor, product)) {

                    // not an MTP or PTP device

                    continue;

                }

                // request MTP OS string and descriptor

                // some music players need to see this before entering MTP mode.

                char buffer[256];

                memset(buffer, 0, sizeof(buffer));

                int ret = usb_device_send_control(device,

                        USB_DIR_IN|USB_RECIP_DEVICE|USB_TYPE_STANDARD,

                        USB_REQ_GET_DESCRIPTOR, (USB_DT_STRING << 8) | 0xEE,

                        0, sizeof(buffer), buffer);

                printf("usb_device_send_control returned %d errno: %d\n", ret, errno);

                if (ret > 0) {

                    printf("got MTP string %s\n", buffer);

                    ret = usb_device_send_control(device,

                            USB_DIR_IN|USB_RECIP_DEVICE|USB_TYPE_VENDOR, 1,

                            0, 4, sizeof(buffer), buffer);

                    printf("OS descriptor got %d\n", ret);

                } else {

                    printf("no MTP string\n");

                }

            }

            // if we got here, then we have a likely MTP or PTP device

            struct usb_endpoint *ep_intr = usb_endpoint_open(device, ep_intr_desc);

            if (usb_device_claim_interface(device, interface->bInterfaceNumber)) {

                LOGE("usb_device_claim_interface failed\n");

                LOGE("usb_device_claim_interface failed errno: %d\n", errno);

                usb_endpoint_close(ep_in);

                usb_endpoint_close(ep_out);

                usb_endpoint_close(ep_intr);