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Diffstat (limited to 'media/mtp/ptptest.cpp')
| -rw-r--r-- | media/mtp/ptptest.cpp | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/media/mtp/ptptest.cpp b/media/mtp/ptptest.cpp new file mode 100644 index 0000000..1218fa6 --- /dev/null +++ b/media/mtp/ptptest.cpp @@ -0,0 +1,134 @@ +/* + * Copyright (C) 2010 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <unistd.h> +#include <stdio.h> +#include <string.h> + +#include <usbhost/usbhost.h> +#include <linux/usb/ch9.h> + +#include "MtpClient.h" + +static struct usb_device *sCameraDevice = NULL; +static int sCameraInterface = 0; +static MtpClient *sClient = NULL; + + +static void start_session(struct usb_endpoint *ep_in, struct usb_endpoint *ep_out, + struct usb_endpoint *ep_intr) +{ + if (sClient) + delete sClient; + sClient = new MtpClient(ep_in, ep_out, ep_intr); + sClient->openSession(); + sClient->getDeviceInfo(); +} + +static void usb_device_added(const char *devname) +{ + struct usb_descriptor_header* desc; + struct usb_descriptor_iter iter; + + struct usb_device *device = usb_device_open(devname); + if (!device) return; + + usb_descriptor_iter_init(device, &iter); + + while ((desc = usb_descriptor_iter_next(&iter)) != NULL) { + if (desc->bDescriptorType == USB_DT_INTERFACE) { + struct usb_interface_descriptor *interface = (struct usb_interface_descriptor *)desc; + + if (interface->bInterfaceClass == USB_CLASS_STILL_IMAGE && + interface->bInterfaceSubClass == 1 && // Still Image Capture + interface->bInterfaceProtocol == 1) // Picture Transfer Protocol (PIMA 15470) + { + printf("Found camera: \"%s\" \"%s\"\n", usb_device_get_manufacturer_name(device), + usb_device_get_product_name(device)); + + // interface should be followed by three endpoints + struct usb_endpoint_descriptor *ep, *ep_in_desc = NULL, *ep_out_desc = NULL, *ep_intr_desc = NULL; + for (int i = 0; i < 3; i++) { + ep = (struct usb_endpoint_descriptor *)usb_descriptor_iter_next(&iter); + if (!ep || ep->bDescriptorType != USB_DT_ENDPOINT) { + fprintf(stderr, "endpoints not found\n"); + return; + } + if (ep->bmAttributes == USB_ENDPOINT_XFER_BULK) { + if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) + ep_in_desc = ep; + else + ep_out_desc = ep; + } else if (ep->bmAttributes == USB_ENDPOINT_XFER_INT && + ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) { + ep_intr_desc = ep; + } + } + if (!ep_in_desc || !ep_out_desc || !ep_intr_desc) { + fprintf(stderr, "endpoints not found\n"); + return; + } + + struct usb_endpoint *ep_in = usb_endpoint_open(device, ep_in_desc); + struct usb_endpoint *ep_out = usb_endpoint_open(device, ep_out_desc); + struct usb_endpoint *ep_intr = usb_endpoint_open(device, ep_intr_desc); + + if (usb_device_claim_interface(device, interface->bInterfaceNumber)) { + fprintf(stderr, "usb_device_claim_interface failed\n"); + usb_endpoint_close(ep_in); + usb_endpoint_close(ep_out); + usb_endpoint_close(ep_intr); + return; + } + + if (sCameraDevice) { + usb_device_release_interface(sCameraDevice, sCameraInterface); + usb_device_close(sCameraDevice); + } + sCameraDevice = device; + start_session(ep_in, ep_out, ep_intr); + } + } + } + + if (device != sCameraDevice) + usb_device_close(device); +} + +static void usb_device_removed(const char *devname) +{ + if (sCameraDevice && !strcmp(devname, usb_device_get_name(sCameraDevice))) { + delete sClient; + printf("Camera removed!\n"); + usb_device_release_interface(sCameraDevice, sCameraInterface); + usb_device_close(sCameraDevice); + sCameraDevice = NULL; + } +} + +int main(int argc, char* argv[]) +{ + if (usb_host_init(usb_device_added, usb_device_removed)) { + fprintf(stderr, "usb_host_init failed\n"); + return -1; + } + + while (1) { + sleep(1); + } + + return 0; +}
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