/* am7xxx - communication with AM7xxx based USB Pico Projectors and DPFs
*
- * Copyright (C) 2012 Antonio Ospite <ospite@studenti.unina.it>
+ * Copyright (C) 2012-2014 Antonio Ospite <ao2@ao2.it>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
#include "am7xxx.h"
#include "serialize.h"
+#include "tools.h"
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
#define debug(ctx, ...) log_message(ctx, AM7XXX_LOG_DEBUG, __func__, 0, __VA_ARGS__)
#define trace(ctx, ...) log_message(ctx, AM7XXX_LOG_TRACE, NULL, 0, __VA_ARGS__)
+struct am7xxx_ops {
+ int (*set_power_mode)(am7xxx_device *dev, am7xxx_power_mode power);
+ int (*set_zoom_mode)(am7xxx_device *dev, am7xxx_zoom_mode zoom);
+};
+
struct am7xxx_usb_device_descriptor {
const char *name;
uint16_t vendor_id;
uint16_t product_id;
+ uint8_t configuration; /* The bConfigurationValue of the device */
+ uint8_t interface_number; /* The bInterfaceNumber of the device */
+ struct am7xxx_ops ops;
};
-static struct am7xxx_usb_device_descriptor supported_devices[] = {
+static int default_set_power_mode(am7xxx_device *dev, am7xxx_power_mode power);
+static int picopix_set_power_mode(am7xxx_device *dev, am7xxx_power_mode power);
+static int default_set_zoom_mode(am7xxx_device *dev, am7xxx_zoom_mode zoom);
+static int picopix_set_zoom_mode(am7xxx_device *dev, am7xxx_zoom_mode zoom);
+
+#define DEFAULT_OPS { \
+ .set_power_mode = default_set_power_mode, \
+ .set_zoom_mode = default_set_zoom_mode, \
+}
+
+static const struct am7xxx_usb_device_descriptor supported_devices[] = {
{
.name = "Acer C110",
.vendor_id = 0x1de1,
.product_id = 0xc101,
+ .configuration = 2,
+ .interface_number = 0,
+ .ops = DEFAULT_OPS,
},
{
.name = "Acer C112",
.vendor_id = 0x1de1,
.product_id = 0x5501,
+ .configuration = 2,
+ .interface_number = 0,
+ .ops = DEFAULT_OPS,
},
{
.name ="Aiptek PocketCinema T25",
.vendor_id = 0x08ca,
.product_id = 0x2144,
+ .configuration = 2,
+ .interface_number = 0,
+ .ops = DEFAULT_OPS,
},
{
.name = "Philips/Sagemcom PicoPix 1020",
.vendor_id = 0x21e7,
.product_id = 0x000e,
+ .configuration = 2,
+ .interface_number = 0,
+ .ops = DEFAULT_OPS,
},
{
.name = "Philips/Sagemcom PicoPix 2055",
.vendor_id = 0x21e7,
.product_id = 0x0016,
+ .configuration = 2,
+ .interface_number = 0,
+ .ops = {
+ .set_power_mode = picopix_set_power_mode,
+ .set_zoom_mode = picopix_set_zoom_mode,
+ },
+ },
+ {
+ .name = "Philips/Sagemcom PicoPix 2330",
+ .vendor_id = 0x21e7,
+ .product_id = 0x0019,
+ .configuration = 1,
+ .interface_number = 0,
},
};
struct _am7xxx_device {
libusb_device_handle *usb_device;
+ struct libusb_transfer *transfer;
+ int transfer_completed;
uint8_t buffer[AM7XXX_HEADER_WIRE_SIZE];
am7xxx_device_info *device_info;
am7xxx_context *ctx;
+ const struct am7xxx_usb_device_descriptor *desc;
am7xxx_device *next;
};
AM7XXX_PACKET_TYPE_IMAGE = 0x02,
AM7XXX_PACKET_TYPE_POWER = 0x04,
AM7XXX_PACKET_TYPE_ZOOM = 0x05,
+ AM7XXX_PACKET_TYPE_PICOPIX_POWER_LOW = 0x15,
+ AM7XXX_PACKET_TYPE_PICOPIX_POWER_MEDIUM = 0x16,
+ AM7XXX_PACKET_TYPE_PICOPIX_POWER_HIGH = 0x17,
+ AM7XXX_PACKET_TYPE_PICOPIX_ENABLE_TI = 0x18,
+ AM7XXX_PACKET_TYPE_PICOPIX_DISABLE_TI = 0x19,
} am7xxx_packet_type;
struct am7xxx_generic_header {
#ifdef DEBUG
+static void debug_dump_generic_header(am7xxx_context *ctx, struct am7xxx_generic_header *g)
+{
+ if (ctx == NULL || g == NULL)
+ return;
+
+ debug(ctx, "Generic header:\n");
+ debug(ctx, "\tfield0: 0x%08x (%u)\n", g->field0, g->field0);
+ debug(ctx, "\tfield1: 0x%08x (%u)\n", g->field1, g->field1);
+ debug(ctx, "\tfield2: 0x%08x (%u)\n", g->field2, g->field2);
+ debug(ctx, "\tfield3: 0x%08x (%u)\n", g->field3, g->field3);
+}
+
static void debug_dump_devinfo_header(am7xxx_context *ctx, struct am7xxx_devinfo_header *d)
{
if (ctx == NULL || d == NULL)
break;
default:
- debug(ctx, "Packet type not supported!\n");
+ debug(ctx, "Parsing data not supported for this packet type!\n");
+ debug_dump_generic_header(ctx, &(h->header_data.data));
break;
}
debug(ctx, "END\n\n");
return 0;
}
+static void send_data_async_complete_cb(struct libusb_transfer *transfer)
+{
+ am7xxx_device *dev = (am7xxx_device *)(transfer->user_data);
+ int *completed = &(dev->transfer_completed);
+ int transferred = transfer->actual_length;
+ int ret;
+
+ if (transferred != transfer->length) {
+ error(dev->ctx, "transferred: %d (expected %u)\n",
+ transferred, transfer->length);
+ }
+
+ switch (transfer->status) {
+ case LIBUSB_TRANSFER_COMPLETED:
+ ret = 0;
+ break;
+ case LIBUSB_TRANSFER_TIMED_OUT:
+ ret = LIBUSB_ERROR_TIMEOUT;
+ break;
+ case LIBUSB_TRANSFER_STALL:
+ ret = LIBUSB_ERROR_PIPE;
+ break;
+ case LIBUSB_TRANSFER_OVERFLOW:
+ ret = LIBUSB_ERROR_OVERFLOW;
+ break;
+ case LIBUSB_TRANSFER_NO_DEVICE:
+ ret = LIBUSB_ERROR_NO_DEVICE;
+ break;
+ case LIBUSB_TRANSFER_ERROR:
+ case LIBUSB_TRANSFER_CANCELLED:
+ ret = LIBUSB_ERROR_IO;
+ break;
+ default:
+ error(dev->ctx, "unrecognised status code %d", transfer->status);
+ ret = LIBUSB_ERROR_OTHER;
+ }
+
+ if (ret < 0)
+ error(dev->ctx, "libusb transfer failed: %s",
+ libusb_error_name(ret));
+
+ libusb_free_transfer(transfer);
+ transfer = NULL;
+
+ *completed = 1;
+}
+
+static inline void wait_for_trasfer_completed(am7xxx_device *dev)
+{
+ while (!dev->transfer_completed) {
+ int ret = libusb_handle_events_completed(dev->ctx->usb_context,
+ &(dev->transfer_completed));
+ if (ret < 0) {
+ if (ret == LIBUSB_ERROR_INTERRUPTED)
+ continue;
+ error(dev->ctx, "libusb_handle_events failed: %s, cancelling transfer and retrying",
+ libusb_error_name(ret));
+ libusb_cancel_transfer(dev->transfer);
+ continue;
+ }
+ }
+}
+
+static int send_data_async(am7xxx_device *dev, uint8_t *buffer, unsigned int len)
+{
+ int ret;
+ uint8_t *transfer_buffer;
+
+ dev->transfer = libusb_alloc_transfer(0);
+ if (dev->transfer == NULL) {
+ error(dev->ctx, "cannot allocate transfer (%s)\n",
+ strerror(errno));
+ return -ENOMEM;
+ }
+
+ /* Make a copy of the buffer so the caller can safely reuse it just
+ * after libusb_submit_transfer() has returned. This technique
+ * requires more allocations than a proper double-buffering approach
+ * but it takes a lot less code. */
+ transfer_buffer = malloc(len);
+ if (transfer_buffer == NULL) {
+ error(dev->ctx, "cannot allocate transfer buffer (%s)\n",
+ strerror(errno));
+ ret = -ENOMEM;
+ goto err;
+ }
+ memcpy(transfer_buffer, buffer, len);
+
+ dev->transfer->flags |= LIBUSB_TRANSFER_FREE_BUFFER;
+ libusb_fill_bulk_transfer(dev->transfer, dev->usb_device, 0x1,
+ transfer_buffer, len,
+ send_data_async_complete_cb, dev, 0);
+
+ /* wait for the previous transfer to complete */
+ wait_for_trasfer_completed(dev);
+
+ trace_dump_buffer(dev->ctx, "sending -->", buffer, len);
+
+ dev->transfer_completed = 0;
+ ret = libusb_submit_transfer(dev->transfer);
+ if (ret < 0)
+ goto err;
+
+ return 0;
+
+err:
+ libusb_free_transfer(dev->transfer);
+ dev->transfer = NULL;
+ return ret;
+}
+
static void serialize_header(struct am7xxx_header *h, uint8_t *buffer)
{
uint8_t **buffer_iterator = &buffer;
return ret;
}
+static int send_command(am7xxx_device *dev, am7xxx_packet_type type)
+{
+ struct am7xxx_header h = {
+ .packet_type = type,
+ .direction = AM7XXX_DIRECTION_OUT,
+ .header_data_len = 0x00,
+ .unknown2 = 0x3e,
+ .unknown3 = 0x10,
+ .header_data = {
+ .data = {
+ .field0 = 0,
+ .field1 = 0,
+ .field2 = 0,
+ .field3 = 0,
+ },
+ },
+ };
+
+ return send_header(dev, &h);
+}
+
+
/* When level == AM7XXX_LOG_FATAL do not check the log_level from the context
* and print the message unconditionally, this makes it possible to print
* fatal messages even early on initialization, before the context has been
return;
}
-static am7xxx_device *add_new_device(am7xxx_context *ctx)
+static am7xxx_device *add_new_device(am7xxx_context *ctx,
+ const struct am7xxx_usb_device_descriptor *desc)
{
am7xxx_device **devices_list;
am7xxx_device *new_device;
memset(new_device, 0, sizeof(*new_device));
new_device->ctx = ctx;
+ new_device->desc = desc;
+ new_device->transfer_completed = 1;
devices_list = &(ctx->devices_list);
static int scan_devices(am7xxx_context *ctx, scan_op op,
unsigned int open_device_index, am7xxx_device **dev)
{
- int num_devices;
+ ssize_t num_devices;
libusb_device** list;
unsigned int current_index;
int i;
info(ctx, "am7xxx device found, index: %d, name: %s\n",
current_index,
supported_devices[j].name);
- new_device = add_new_device(ctx);
+ new_device = add_new_device(ctx, &supported_devices[j]);
if (new_device == NULL) {
/* XXX, the caller may want
* to call am7xxx_shutdown() if
* close it again before bailing out.
*/
- ret = libusb_set_configuration((*dev)->usb_device, 2);
+ ret = libusb_set_configuration((*dev)->usb_device,
+ (*dev)->desc->configuration);
if (ret < 0) {
debug(ctx, "libusb_set_configuration failed\n");
- debug(ctx, "Cannot set configuration 2\n");
+ debug(ctx, "Cannot set configuration %hhu\n",
+ (*dev)->desc->configuration);
goto out_libusb_close;
}
- ret = libusb_claim_interface((*dev)->usb_device, 0);
+ ret = libusb_claim_interface((*dev)->usb_device,
+ (*dev)->desc->interface_number);
if (ret < 0) {
debug(ctx, "libusb_claim_interface failed\n");
- debug(ctx, "Cannot claim interface 0\n");
+ debug(ctx, "Cannot claim interface %hhu\n",
+ (*dev)->desc->interface_number);
out_libusb_close:
libusb_close((*dev)->usb_device);
(*dev)->usb_device = NULL;
return ret;
}
+/* Device specific operations */
+
+static int default_set_power_mode(am7xxx_device *dev, am7xxx_power_mode power)
+{
+ int ret;
+ struct am7xxx_header h = {
+ .packet_type = AM7XXX_PACKET_TYPE_POWER,
+ .direction = AM7XXX_DIRECTION_OUT,
+ .header_data_len = sizeof(struct am7xxx_power_header),
+ .unknown2 = 0x3e,
+ .unknown3 = 0x10,
+ };
+
+ switch(power) {
+ case AM7XXX_POWER_OFF:
+ h.header_data.power.bit2 = 0;
+ h.header_data.power.bit1 = 0;
+ h.header_data.power.bit0 = 0;
+ break;
+
+ case AM7XXX_POWER_LOW:
+ h.header_data.power.bit2 = 0;
+ h.header_data.power.bit1 = 0;
+ h.header_data.power.bit0 = 1;
+ break;
+
+ case AM7XXX_POWER_MIDDLE:
+ h.header_data.power.bit2 = 0;
+ h.header_data.power.bit1 = 1;
+ h.header_data.power.bit0 = 0;
+ break;
+
+ case AM7XXX_POWER_HIGH:
+ h.header_data.power.bit2 = 0;
+ h.header_data.power.bit1 = 1;
+ h.header_data.power.bit0 = 1;
+ break;
+
+ case AM7XXX_POWER_TURBO:
+ h.header_data.power.bit2 = 1;
+ h.header_data.power.bit1 = 0;
+ h.header_data.power.bit0 = 0;
+ break;
+
+ default:
+ error(dev->ctx, "Unsupported power mode.\n");
+ return -EINVAL;
+ };
+
+ ret = send_header(dev, &h);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int picopix_set_power_mode(am7xxx_device *dev, am7xxx_power_mode power)
+{
+ switch(power) {
+ case AM7XXX_POWER_LOW:
+ return send_command(dev, AM7XXX_PACKET_TYPE_PICOPIX_POWER_LOW);
+
+ case AM7XXX_POWER_MIDDLE:
+ return send_command(dev, AM7XXX_PACKET_TYPE_PICOPIX_POWER_MEDIUM);
+
+ case AM7XXX_POWER_HIGH:
+ return send_command(dev, AM7XXX_PACKET_TYPE_PICOPIX_POWER_HIGH);
+
+ case AM7XXX_POWER_OFF:
+ case AM7XXX_POWER_TURBO:
+ default:
+ error(dev->ctx, "Unsupported power mode.\n");
+ return -EINVAL;
+ };
+}
+
+static int default_set_zoom_mode(am7xxx_device *dev, am7xxx_zoom_mode zoom)
+{
+ int ret;
+ struct am7xxx_header h = {
+ .packet_type = AM7XXX_PACKET_TYPE_ZOOM,
+ .direction = AM7XXX_DIRECTION_OUT,
+ .header_data_len = sizeof(struct am7xxx_zoom_header),
+ .unknown2 = 0x3e,
+ .unknown3 = 0x10,
+ };
+
+ switch(zoom) {
+ case AM7XXX_ZOOM_ORIGINAL:
+ h.header_data.zoom.bit1 = 0;
+ h.header_data.zoom.bit0 = 0;
+ break;
+
+ case AM7XXX_ZOOM_H:
+ h.header_data.zoom.bit1 = 0;
+ h.header_data.zoom.bit0 = 1;
+ break;
+
+ case AM7XXX_ZOOM_H_V:
+ h.header_data.zoom.bit1 = 1;
+ h.header_data.zoom.bit0 = 0;
+ break;
+
+ case AM7XXX_ZOOM_TEST:
+ h.header_data.zoom.bit1 = 1;
+ h.header_data.zoom.bit0 = 1;
+ break;
+
+ case AM7XXX_ZOOM_TELE:
+ default:
+ error(dev->ctx, "Unsupported zoom mode.\n");
+ return -EINVAL;
+ };
+
+ ret = send_header(dev, &h);
+ if (ret < 0)
+ return ret;
+
+ 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 = 0;
+ int ret;
*ctx = malloc(sizeof(**ctx));
if (*ctx == NULL) {
if (ret < 0)
goto out_free_context;
- libusb_set_debug((*ctx)->usb_context, 3);
+ libusb_set_debug((*ctx)->usb_context, LIBUSB_LOG_LEVEL_INFO);
ret = scan_devices(*ctx, SCAN_OP_BUILD_DEVLIST , 0, NULL);
if (ret < 0) {
return -EINVAL;
}
if (dev->usb_device) {
- libusb_release_interface(dev->usb_device, 0);
+ wait_for_trasfer_completed(dev);
+ libusb_release_interface(dev->usb_device, dev->desc->interface_number);
libusb_close(dev->usb_device);
dev->usb_device = NULL;
}
am7xxx_device_info *device_info)
{
int ret;
- struct am7xxx_header h = {
- .packet_type = AM7XXX_PACKET_TYPE_DEVINFO,
- .direction = AM7XXX_DIRECTION_OUT,
- .header_data_len = 0x00,
- .unknown2 = 0x3e,
- .unknown3 = 0x10,
- .header_data = {
- .devinfo = {
- .native_width = 0,
- .native_height = 0,
- .unknown0 = 0,
- .unknown1 = 0,
- },
- },
- };
+ struct am7xxx_header h;
if (dev->device_info) {
memcpy(device_info, dev->device_info, sizeof(*device_info));
return 0;
}
- ret = send_header(dev, &h);
+ ret = send_command(dev, AM7XXX_PACKET_TYPE_DEVINFO);
if (ret < 0)
return ret;
+ memset(&h, 0, sizeof(h));
ret = read_header(dev, &h);
if (ret < 0)
return ret;
return send_data(dev, image, image_size);
}
-AM7XXX_PUBLIC int am7xxx_set_power_mode(am7xxx_device *dev, am7xxx_power_mode power)
+AM7XXX_PUBLIC int am7xxx_send_image_async(am7xxx_device *dev,
+ am7xxx_image_format format,
+ unsigned int width,
+ unsigned int height,
+ uint8_t *image,
+ unsigned int image_size)
{
int ret;
struct am7xxx_header h = {
- .packet_type = AM7XXX_PACKET_TYPE_POWER,
+ .packet_type = AM7XXX_PACKET_TYPE_IMAGE,
.direction = AM7XXX_DIRECTION_OUT,
- .header_data_len = sizeof(struct am7xxx_power_header),
+ .header_data_len = sizeof(struct am7xxx_image_header),
.unknown2 = 0x3e,
.unknown3 = 0x10,
- };
-
- switch(power) {
- case AM7XXX_POWER_OFF:
- h.header_data.power.bit2 = 0;
- h.header_data.power.bit1 = 0;
- h.header_data.power.bit0 = 0;
- break;
-
- case AM7XXX_POWER_LOW:
- h.header_data.power.bit2 = 0;
- h.header_data.power.bit1 = 0;
- h.header_data.power.bit0 = 1;
- break;
-
- case AM7XXX_POWER_MIDDLE:
- h.header_data.power.bit2 = 0;
- h.header_data.power.bit1 = 1;
- h.header_data.power.bit0 = 0;
- break;
-
- case AM7XXX_POWER_HIGH:
- h.header_data.power.bit2 = 0;
- h.header_data.power.bit1 = 1;
- h.header_data.power.bit0 = 1;
- break;
-
- case AM7XXX_POWER_TURBO:
- h.header_data.power.bit2 = 1;
- h.header_data.power.bit1 = 0;
- h.header_data.power.bit0 = 0;
- break;
-
- default:
- error(dev->ctx, "Unsupported power mode.\n");
- return -EINVAL;
+ .header_data = {
+ .image = {
+ .format = format,
+ .width = width,
+ .height = height,
+ .image_size = image_size,
+ },
+ },
};
ret = send_header(dev, &h);
if (ret < 0)
return ret;
- return 0;
+ if (image == NULL || image_size == 0) {
+ warning(dev->ctx, "Not sending any data, check the 'image' or 'image_size' parameters\n");
+ return 0;
+ }
+
+ return send_data_async(dev, image, image_size);
}
-AM7XXX_PUBLIC int am7xxx_set_zoom_mode(am7xxx_device *dev, am7xxx_zoom_mode zoom)
+AM7XXX_PUBLIC int am7xxx_set_power_mode(am7xxx_device *dev, am7xxx_power_mode power)
{
- int ret;
- struct am7xxx_header h = {
- .packet_type = AM7XXX_PACKET_TYPE_ZOOM,
- .direction = AM7XXX_DIRECTION_OUT,
- .header_data_len = sizeof(struct am7xxx_zoom_header),
- .unknown2 = 0x3e,
- .unknown3 = 0x10,
- };
-
- switch(zoom) {
- case AM7XXX_ZOOM_ORIGINAL:
- h.header_data.zoom.bit1 = 0;
- h.header_data.zoom.bit0 = 0;
- break;
-
- case AM7XXX_ZOOM_H:
- h.header_data.zoom.bit1 = 0;
- h.header_data.zoom.bit0 = 1;
- break;
-
- case AM7XXX_ZOOM_H_V:
- h.header_data.zoom.bit1 = 1;
- h.header_data.zoom.bit0 = 0;
- break;
-
- case AM7XXX_ZOOM_TEST:
- h.header_data.zoom.bit1 = 1;
- h.header_data.zoom.bit0 = 1;
- break;
+ if (dev->desc->ops.set_power_mode == NULL) {
+ warning(dev->ctx,
+ "setting power mode is unsupported on this device\n");
+ return 0;
+ }
- default:
- error(dev->ctx, "Unsupported zoom mode.\n");
- return -EINVAL;
- };
+ return dev->desc->ops.set_power_mode(dev, power);
+}
- ret = send_header(dev, &h);
- if (ret < 0)
- return ret;
+AM7XXX_PUBLIC int am7xxx_set_zoom_mode(am7xxx_device *dev, am7xxx_zoom_mode zoom)
+{
+ if (dev->desc->ops.set_zoom_mode == NULL) {
+ warning(dev->ctx,
+ "setting zoom mode is unsupported on this device\n");
+ return 0;
+ }
- return 0;
+ return dev->desc->ops.set_zoom_mode(dev, zoom);
}
projects / libam7xxx.git / blobdiff