+ return 0;
+}
+
+static int picopix_set_zoom_mode(am7xxx_device *dev, am7xxx_zoom_mode zoom)
+{
+ int ret;
+ am7xxx_packet_type packet_type;
+
+ switch(zoom) {
+ case AM7XXX_ZOOM_ORIGINAL:
+ packet_type = AM7XXX_PACKET_TYPE_PICOPIX_DISABLE_TI;
+ break;
+
+ case AM7XXX_ZOOM_TELE:
+ packet_type = AM7XXX_PACKET_TYPE_PICOPIX_ENABLE_TI;
+ break;
+
+ case AM7XXX_ZOOM_H:
+ case AM7XXX_ZOOM_H_V:
+ case AM7XXX_ZOOM_TEST:
+ default:
+ error(dev->ctx, "Unsupported zoom mode.\n");
+ return -EINVAL;
+ };
+
+ ret = send_command(dev, packet_type);
+ if (ret < 0)
+ return ret;
+
+ /* The Windows drivers wait for 100ms and send the same command again,
+ * probably to overcome a firmware deficiency */
+ ret = msleep(100);
+ if (ret < 0)
+ return ret;
+
+ return send_command(dev, packet_type);
+}
+
+/* Public API */
+
+AM7XXX_PUBLIC int am7xxx_init(am7xxx_context **ctx)
+{
+ int ret;
+
+ *ctx = malloc(sizeof(**ctx));
+ if (*ctx == NULL) {
+ fatal("cannot allocate the context (%s)\n", strerror(errno));
+ ret = -ENOMEM;
+ goto out;
+ }
+ memset(*ctx, 0, sizeof(**ctx));
+
+ /* Set the highest log level during initialization */
+ (*ctx)->log_level = AM7XXX_LOG_TRACE;
+
+ ret = libusb_init(&((*ctx)->usb_context));
+ if (ret < 0)
+ goto out_free_context;
+
+ libusb_set_debug((*ctx)->usb_context, LIBUSB_LOG_LEVEL_INFO);
+
+ ret = scan_devices(*ctx, SCAN_OP_BUILD_DEVLIST , 0, NULL);
+ if (ret < 0) {
+ error(*ctx, "scan_devices() failed\n");
+ am7xxx_shutdown(*ctx);
+ goto out;
+ }
+
+ /* Set a quieter log level as default for normal operation */
+ (*ctx)->log_level = AM7XXX_LOG_ERROR;
+ return 0;
+
+out_free_context:
+ free(*ctx);
+ *ctx = NULL;
+out:
+ return ret;
+}
+
+AM7XXX_PUBLIC void am7xxx_shutdown(am7xxx_context *ctx)
+{
+ am7xxx_device *current;
+
+ if (ctx == NULL) {
+ fatal("context must not be NULL!\n");
+ return;
+ }
+
+ current = ctx->devices_list;
+ while (current) {
+ am7xxx_device *next = current->next;
+ am7xxx_close_device(current);
+ free(current->device_info);
+ free(current);
+ current = next;
+ }
+
+ libusb_exit(ctx->usb_context);
+ free(ctx);
+ ctx = NULL;
+}
+
+AM7XXX_PUBLIC void am7xxx_set_log_level(am7xxx_context *ctx, am7xxx_log_level log_level)
+{
+ ctx->log_level = log_level;
+}
+
+AM7XXX_PUBLIC int am7xxx_open_device(am7xxx_context *ctx, am7xxx_device **dev,
+ unsigned int device_index)
+{
+ int ret;
+
+ if (ctx == NULL) {
+ fatal("context must not be NULL!\n");
+ return -EINVAL;
+ }
+
+ ret = scan_devices(ctx, SCAN_OP_OPEN_DEVICE, device_index, dev);
+ if (ret < 0) {
+ errno = ENODEV;
+ goto out;
+ } else if (ret > 0) {
+ warning(ctx, "device %d already open\n", device_index);
+ errno = EBUSY;
+ ret = -EBUSY;
+ goto out;
+ }
+
+ /* Philips/Sagemcom PicoPix projectors require that the DEVINFO packet
+ * is the first one to be sent to the device in order for it to
+ * successfully return the correct device information.
+ *
+ * So, if there is not a cached version of it (from a previous open),
+ * we ask for device info at open time,
+ */
+ if ((*dev)->device_info == NULL) {
+ ret = am7xxx_get_device_info(*dev, NULL);
+ if (ret < 0)
+ error(ctx, "cannot get device info\n");
+ }
+
+out:
+ return ret;
+}
+
+AM7XXX_PUBLIC int am7xxx_close_device(am7xxx_device *dev)
+{
+ if (dev == NULL) {
+ fatal("dev must not be NULL!\n");
+ return -EINVAL;
+ }
+ if (dev->usb_device) {
+ wait_for_trasfer_completed(dev);
+ libusb_release_interface(dev->usb_device, dev->desc->interface_number);
+ libusb_close(dev->usb_device);
+ dev->usb_device = NULL;
+ }
+ return 0;
+}
+
+AM7XXX_PUBLIC int am7xxx_get_device_info(am7xxx_device *dev,
+ am7xxx_device_info *device_info)
+{
+ int ret;
+ struct am7xxx_header h;
+
+ if (dev->device_info) {
+ memcpy(device_info, dev->device_info, sizeof(*device_info));
+ return 0;
+ }
+
+ ret = send_command(dev, AM7XXX_PACKET_TYPE_DEVINFO);
+ if (ret < 0)
+ return ret;
+
+ memset(&h, 0, sizeof(h));
projects / libam7xxx.git / blobdiff