X-Git-Url: https://git.ao2.it/libam7xxx.git/blobdiff_plain/7b5a3f952c23daed53a37422db0972950071fc55..bbebd199987581ee6f344c89bfb02237dc0ab0bd:/src/am7xxx.c?ds=sidebyside diff --git a/src/am7xxx.c b/src/am7xxx.c index 1035e23..4bf9abb 100644 --- a/src/am7xxx.c +++ b/src/am7xxx.c @@ -1,6 +1,6 @@ /* am7xxx - communication with AM7xxx based USB Pico Projectors and DPFs * - * Copyright (C) 2012 Antonio Ospite + * Copyright (C) 2012-2014 Antonio Ospite * * 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 @@ -26,22 +26,48 @@ #include "am7xxx.h" #include "serialize.h" +#include "tools.h" #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) -/* If we're not using GNU C, elide __attribute__ +/* + * If we're not using GNU C, elide __attribute__ * taken from: http://unixwiz.net/techtips/gnu-c-attributes.html) */ #ifndef __GNUC__ -# define __attribute__(x) /*NOTHING*/ + #define __attribute__(x) /* NOTHING */ +#endif + +/* + * Fix printf format when compiling for Windows with MinGW, see: + * https://sourceforge.net/p/mingw-w64/wiki2/gnu%20printf/ + */ +#ifdef __MINGW_PRINTF_FORMAT + #define AM7XXX_PRINTF_FORMAT __MINGW_PRINTF_FORMAT +#else + #define AM7XXX_PRINTF_FORMAT printf +#endif + +/* Control shared library symbols visibility */ +#if defined _WIN32 || defined __CYGWIN__ + #define AM7XXX_PUBLIC __declspec(dllexport) + #define AM7XXX_LOCAL +#else + #if __GNUC__ >= 4 + #define AM7XXX_PUBLIC __attribute__ ((visibility ("default"))) + #define AM7XXX_LOCAL __attribute__ ((visibility ("hidden"))) + #else + #define AM7XXX_PUBLIC + #define AM7XXX_LOCAL + #endif #endif static void log_message(am7xxx_context *ctx, int level, - const char *function, + const char *function_name, int line, const char *fmt, - ...) __attribute__ ((format (printf, 5, 6))); + ...) __attribute__ ((format (AM7XXX_PRINTF_FORMAT, 5, 6))); #define fatal(...) log_message(NULL, AM7XXX_LOG_FATAL, __func__, __LINE__, __VA_ARGS__) #define error(ctx, ...) log_message(ctx, AM7XXX_LOG_ERROR, __func__, __LINE__, __VA_ARGS__) @@ -50,22 +76,80 @@ static void log_message(am7xxx_context *ctx, #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, }, }; @@ -77,8 +161,12 @@ static struct am7xxx_usb_device_descriptor supported_devices[] = { 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; }; @@ -92,7 +180,12 @@ typedef enum { AM7XXX_PACKET_TYPE_DEVINFO = 0x01, AM7XXX_PACKET_TYPE_IMAGE = 0x02, AM7XXX_PACKET_TYPE_POWER = 0x04, - AM7XXX_PACKET_TYPE_UNKNOWN = 0x05, + 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 { @@ -122,6 +215,11 @@ struct am7xxx_power_header { uint32_t bit0; }; +struct am7xxx_zoom_header { + uint32_t bit1; + uint32_t bit0; +}; + /* * Examples of packet headers: * @@ -132,9 +230,13 @@ struct am7xxx_power_header { * 04 00 00 00 00 0c ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 */ +/* Direction of the communication from the host point of view */ +#define AM7XXX_DIRECTION_OUT 0 /* host -> device */ +#define AM7XXX_DIRECTION_IN 1 /* host <- device */ + struct am7xxx_header { uint32_t packet_type; - uint8_t unknown0; + uint8_t direction; uint8_t header_data_len; uint8_t unknown2; uint8_t unknown3; @@ -143,11 +245,24 @@ struct am7xxx_header { struct am7xxx_devinfo_header devinfo; struct am7xxx_image_header image; struct am7xxx_power_header power; + struct am7xxx_zoom_header zoom; } header_data; }; #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) @@ -183,6 +298,16 @@ static void debug_dump_power_header(am7xxx_context *ctx, struct am7xxx_power_hea debug(ctx, "\tbit0: 0x%08x (%u)\n", p->bit0, p->bit0); } +static void debug_dump_zoom_header(am7xxx_context *ctx, struct am7xxx_zoom_header *z) +{ + if (ctx == NULL || z == NULL) + return; + + debug(ctx, "Zoom header:\n"); + debug(ctx, "\tbit1: 0x%08x (%u)\n", z->bit1, z->bit1); + debug(ctx, "\tbit0: 0x%08x (%u)\n", z->bit0, z->bit0); +} + static void debug_dump_header(am7xxx_context *ctx, struct am7xxx_header *h) { if (ctx == NULL || h == NULL) @@ -190,7 +315,10 @@ static void debug_dump_header(am7xxx_context *ctx, struct am7xxx_header *h) debug(ctx, "BEGIN\n"); debug(ctx, "packet_type: 0x%08x (%u)\n", h->packet_type, h->packet_type); - debug(ctx, "unknown0: 0x%02hhx (%hhu)\n", h->unknown0, h->unknown0); + debug(ctx, "direction: 0x%02hhx (%hhu) (%s)\n", h->direction, h->direction, + h->direction == AM7XXX_DIRECTION_IN ? "IN" : + h->direction == AM7XXX_DIRECTION_OUT ? "OUT" : + "UNKNOWN"); debug(ctx, "header_data_len: 0x%02hhx (%hhu)\n", h->header_data_len, h->header_data_len); debug(ctx, "unknown2: 0x%02hhx (%hhu)\n", h->unknown2, h->unknown2); debug(ctx, "unknown3: 0x%02hhx (%hhu)\n", h->unknown3, h->unknown3); @@ -208,8 +336,13 @@ static void debug_dump_header(am7xxx_context *ctx, struct am7xxx_header *h) debug_dump_power_header(ctx, &(h->header_data.power)); break; + case AM7XXX_PACKET_TYPE_ZOOM: + debug_dump_zoom_header(ctx, &(h->header_data.zoom)); + 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"); @@ -219,7 +352,7 @@ static inline unsigned int in_80chars(unsigned int i) { /* The 3 below is the length of "xx " where xx is the hex string * representation of a byte */ - return ((i+1) % (80/3)); + return ((i + 1) % (80 / 3)); } static void trace_dump_buffer(am7xxx_context *ctx, const char *message, @@ -259,12 +392,13 @@ static void trace_dump_buffer(am7xxx_context *ctx, const char *message, static int read_data(am7xxx_device *dev, uint8_t *buffer, unsigned int len) { int ret; - int transferred = 0; + int transferred; + transferred = 0; ret = libusb_bulk_transfer(dev->usb_device, 0x81, buffer, len, &transferred, 0); if (ret != 0 || (unsigned int)transferred != len) { - error(dev->ctx, "ret: %d\ttransferred: %d (expected %u)\n", - ret, transferred, len); + error(dev->ctx, "%s. Transferred: %d (expected %u)\n", + libusb_error_name(ret), transferred, len); return ret; } @@ -276,26 +410,138 @@ static int read_data(am7xxx_device *dev, uint8_t *buffer, unsigned int len) static int send_data(am7xxx_device *dev, uint8_t *buffer, unsigned int len) { int ret; - int transferred = 0; + int transferred; trace_dump_buffer(dev->ctx, "sending -->", buffer, len); - ret = libusb_bulk_transfer(dev->usb_device, 1, buffer, len, &transferred, 0); + transferred = 0; + ret = libusb_bulk_transfer(dev->usb_device, 0x1, buffer, len, &transferred, 0); if (ret != 0 || (unsigned int)transferred != len) { - error(dev->ctx, "ret: %d\ttransferred: %d (expected %u)\n", - ret, transferred, len); + error(dev->ctx, "%s. Transferred: %d (expected %u)\n", + libusb_error_name(ret), transferred, len); return ret; } return 0; } +static void LIBUSB_CALL 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 dynamic allocations compared to 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; put_le32(h->packet_type, buffer_iterator); - put_8(h->unknown0, buffer_iterator); + put_8(h->direction, buffer_iterator); put_8(h->header_data_len, buffer_iterator); put_8(h->unknown2, buffer_iterator); put_8(h->unknown3, buffer_iterator); @@ -310,7 +556,7 @@ static void unserialize_header(uint8_t *buffer, struct am7xxx_header *h) uint8_t **buffer_iterator = &buffer; h->packet_type = get_le32(buffer_iterator); - h->unknown0 = get_8(buffer_iterator); + h->direction = get_8(buffer_iterator); h->header_data_len = get_8(buffer_iterator); h->unknown2 = get_8(buffer_iterator); h->unknown3 = get_8(buffer_iterator); @@ -330,9 +576,16 @@ static int read_header(am7xxx_device *dev, struct am7xxx_header *h) unserialize_header(dev->buffer, h); - debug_dump_header(dev->ctx, h); + if (h->direction == AM7XXX_DIRECTION_IN) { + ret = 0; + } else { + error(dev->ctx, + "Expected an AM7XXX_DIRECTION_IN packet, got one with direction = %d. Weird!\n", + h->direction); + ret = -EINVAL; + } - ret = 0; + debug_dump_header(dev->ctx, h); out: return ret; @@ -344,7 +597,13 @@ static int send_header(am7xxx_device *dev, struct am7xxx_header *h) debug_dump_header(dev->ctx, h); + /* For symmetry with read_header() we should check here for + * h->direction == AM7XXX_DIRECTION_OUT but we just ensure that in all + * the callers and save some cycles here. + */ + serialize_header(h, dev->buffer); + ret = send_data(dev, dev->buffer, AM7XXX_HEADER_WIRE_SIZE); if (ret < 0) error(dev->ctx, "failed to send data\n"); @@ -352,13 +611,35 @@ static int send_header(am7xxx_device *dev, struct am7xxx_header *h) 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 * set up */ static void log_message(am7xxx_context *ctx, int level, - const char *function, + const char *function_name, int line, const char *fmt, ...) @@ -366,8 +647,8 @@ static void log_message(am7xxx_context *ctx, va_list ap; if (level == AM7XXX_LOG_FATAL || (ctx && level <= ctx->log_level)) { - if (function) { - fprintf(stderr, "%s", function); + if (function_name) { + fprintf(stderr, "%s", function_name); if (line) fprintf(stderr, "[%d]", line); fprintf(stderr, ": "); @@ -381,7 +662,8 @@ static void log_message(am7xxx_context *ctx, 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; @@ -391,16 +673,18 @@ static am7xxx_device *add_new_device(am7xxx_context *ctx) return NULL; } - devices_list = &(ctx->devices_list); - new_device = malloc(sizeof(*new_device)); if (new_device == NULL) { - fatal("cannot allocate a new device (%s)\n", strerror(errno)); + debug(ctx, "cannot allocate a new device (%s)\n", strerror(errno)); return NULL; } 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); if (*devices_list == NULL) { *devices_list = new_device; @@ -431,6 +715,119 @@ static am7xxx_device *find_device(am7xxx_context *ctx, return current; } +static int open_device(am7xxx_context *ctx, + unsigned int device_index, + libusb_device *usb_dev, + am7xxx_device **dev) +{ + int ret; + int current_configuration; + + *dev = find_device(ctx, device_index); + if (*dev == NULL) { + ret = -ENODEV; + goto out; + } + + /* the usb device has already been opened */ + if ((*dev)->usb_device) { + ret = 1; + goto out; + } + + ret = libusb_open(usb_dev, &((*dev)->usb_device)); + if (ret < 0) { + debug(ctx, "libusb_open failed: %s\n", libusb_error_name(ret)); + goto out; + } + + /* XXX, the device is now open, if any of the calls below fail we need + * to close it again before bailing out. + */ + + current_configuration = -1; + ret = libusb_get_configuration((*dev)->usb_device, + ¤t_configuration); + if (ret < 0) { + debug(ctx, "libusb_get_configuration failed: %s\n", + libusb_error_name(ret)); + goto out_libusb_close; + } + + if (current_configuration != (*dev)->desc->configuration) { + /* + * In principle, before setting a new configuration, kernel + * drivers should be detached from _all_ interfaces; for + * example calling something like the following "invented" + * function _before_ setting the new configuration: + * + * libusb_detach_all_kernel_drivers((*dev)->usb_device); + * + * However, in practice, this is not necessary for most + * devices as they have only one configuration. + * + * When a device only has one configuration: + * + * - if there was a kernel driver bound to the device, it + * had already set the configuration and the call below + * will be skipped; + * + * - if no kernel driver was bound to the device, the call + * below will suceed. + */ + ret = libusb_set_configuration((*dev)->usb_device, + (*dev)->desc->configuration); + if (ret < 0) { + debug(ctx, "libusb_set_configuration failed: %s\n", + libusb_error_name(ret)); + debug(ctx, "Cannot set configuration %hhu\n", + (*dev)->desc->configuration); + goto out_libusb_close; + } + } + + libusb_set_auto_detach_kernel_driver((*dev)->usb_device, 1); + + ret = libusb_claim_interface((*dev)->usb_device, + (*dev)->desc->interface_number); + if (ret < 0) { + debug(ctx, "libusb_claim_interface failed: %s\n", + libusb_error_name(ret)); + debug(ctx, "Cannot claim interface %hhu\n", + (*dev)->desc->interface_number); + goto out_libusb_close; + } + + /* Checking that the configuration has not changed, as suggested in + * http://libusb.sourceforge.net/api-1.0/caveats.html + */ + current_configuration = -1; + ret = libusb_get_configuration((*dev)->usb_device, + ¤t_configuration); + if (ret < 0) { + debug(ctx, "libusb_get_configuration after claim failed: %s\n", + libusb_error_name(ret)); + goto out_libusb_release_interface; + } + + if (current_configuration != (*dev)->desc->configuration) { + debug(ctx, "libusb configuration changed (expected: %hhu, current: %d)\n", + (*dev)->desc->configuration, current_configuration); + ret = -EINVAL; + goto out_libusb_release_interface; + } +out: + return ret; + +out_libusb_release_interface: + libusb_release_interface((*dev)->usb_device, + (*dev)->desc->interface_number); +out_libusb_close: + libusb_close((*dev)->usb_device); + (*dev)->usb_device = NULL; + return ret; +} + typedef enum { SCAN_OP_BUILD_DEVLIST, SCAN_OP_OPEN_DEVICE, @@ -440,13 +837,14 @@ typedef enum { * This is where the central logic of multi-device support is. * * When 'op' == SCAN_OP_BUILD_DEVLIST the parameters 'open_device_index' and - * 'dev' are ignored; the function returns 0 on success and a negative value + * 'dev' are ignored; the function returns 0 on success or a negative value * on error. * * When 'op' == SCAN_OP_OPEN_DEVICE the function opens the supported USB * device with index 'open_device_index' and returns the correspondent - * am7xxx_device in the 'dev' parameter; the function returns 0 on success, - * 1 if the device was already open and a negative value on error. + * am7xxx_device in the 'dev' parameter; the function returns the value from + * open_device(), which is 0 on success, 1 if the device was already open or + * a negative value on error. * * NOTES: * if scan_devices() fails when called with 'op' == SCAN_OP_BUILD_DEVLIST, @@ -456,8 +854,8 @@ typedef enum { static int scan_devices(am7xxx_context *ctx, scan_op op, unsigned int open_device_index, am7xxx_device **dev) { - int num_devices; - libusb_device** list; + ssize_t num_devices; + libusb_device **list; unsigned int current_index; int i; int ret; @@ -487,15 +885,15 @@ static int scan_devices(am7xxx_context *ctx, scan_op op, continue; for (j = 0; j < ARRAY_SIZE(supported_devices); j++) { - if (desc.idVendor == supported_devices[j].vendor_id - && desc.idProduct == supported_devices[j].product_id) { + if (desc.idVendor == supported_devices[j].vendor_id && + desc.idProduct == supported_devices[j].product_id) { if (op == SCAN_OP_BUILD_DEVLIST) { am7xxx_device *new_device; 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 @@ -509,27 +907,16 @@ static int scan_devices(am7xxx_context *ctx, scan_op op, } else if (op == SCAN_OP_OPEN_DEVICE && current_index == open_device_index) { - *dev = find_device(ctx, open_device_index); - if (*dev == NULL) { - ret = -ENODEV; - goto out; - } - - /* the usb device has already been opened */ - if ((*dev)->usb_device) { - debug(ctx, "(*dev)->usb_device already set\n"); - ret = 1; - goto out; - } - - ret = libusb_open(list[i], &((*dev)->usb_device)); - if (ret < 0) { - debug(ctx, "libusb_open failed\n"); - goto out; - } + ret = open_device(ctx, + open_device_index, + list[i], + dev); + if (ret < 0) + debug(ctx, "open_device failed\n"); - libusb_set_configuration((*dev)->usb_device, 1); - libusb_claim_interface((*dev)->usb_device, 0); + /* exit the loop unconditionally after + * attempting to open the device + * requested by the user */ goto out; } current_index++; @@ -537,7 +924,8 @@ static int scan_devices(am7xxx_context *ctx, scan_op op, } } - /* if we made it up to here we didn't find any device to open */ + /* if we made it up to here when op == SCAN_OP_OPEN_DEVICE, + * no devices to open had been found. */ if (op == SCAN_OP_OPEN_DEVICE) { error(ctx, "Cannot find any device to open\n"); ret = -ENODEV; @@ -551,15 +939,172 @@ out: return ret; } -int am7xxx_init(am7xxx_context **ctx) +/* Device specific operations */ + +static int default_set_power_mode(am7xxx_device *dev, am7xxx_power_mode power) { - int ret = 0; + 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; *ctx = malloc(sizeof(**ctx)); if (*ctx == NULL) { fatal("cannot allocate the context (%s)\n", strerror(errno)); - ret = -ENOMEM; - goto out; + return -ENOMEM; } memset(*ctx, 0, sizeof(**ctx)); @@ -567,10 +1112,12 @@ int am7xxx_init(am7xxx_context **ctx) (*ctx)->log_level = AM7XXX_LOG_TRACE; ret = libusb_init(&((*ctx)->usb_context)); - if (ret < 0) + if (ret < 0) { + error(*ctx, "libusb_init failed: %s\n", libusb_error_name(ret)); 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) { @@ -590,7 +1137,7 @@ out: return ret; } -void am7xxx_shutdown(am7xxx_context *ctx) +AM7XXX_PUBLIC void am7xxx_shutdown(am7xxx_context *ctx) { am7xxx_device *current; @@ -603,6 +1150,7 @@ void am7xxx_shutdown(am7xxx_context *ctx) while (current) { am7xxx_device *next = current->next; am7xxx_close_device(current); + free(current->device_info); free(current); current = next; } @@ -612,12 +1160,12 @@ void am7xxx_shutdown(am7xxx_context *ctx) ctx = NULL; } -void am7xxx_set_log_level(am7xxx_context *ctx, am7xxx_log_level log_level) +AM7XXX_PUBLIC void am7xxx_set_log_level(am7xxx_context *ctx, am7xxx_log_level log_level) { ctx->log_level = log_level; } -int am7xxx_open_device(am7xxx_context *ctx, am7xxx_device **dev, +AM7XXX_PUBLIC int am7xxx_open_device(am7xxx_context *ctx, am7xxx_device **dev, unsigned int device_index) { int ret; @@ -630,76 +1178,101 @@ int am7xxx_open_device(am7xxx_context *ctx, am7xxx_device **dev, 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. + * + * NOTE: am7xxx_get_device_info() will fetch the actual device info + * from the device only the very first time it's called for a given + * device, otherwise, it'll return a cached version of the device info + * (from a previous call to am7xxx_open_device(), for instance). + */ + ret = am7xxx_get_device_info(*dev, NULL); + if (ret < 0) + error(ctx, "cannot get device info\n"); + +out: return ret; } -int am7xxx_close_device(am7xxx_device *dev) +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) { - 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; } return 0; } -int am7xxx_get_device_info(am7xxx_device *dev, +AM7XXX_PUBLIC int am7xxx_get_device_info(am7xxx_device *dev, am7xxx_device_info *device_info) { int ret; - struct am7xxx_header h = { - .packet_type = AM7XXX_PACKET_TYPE_DEVINFO, - .unknown0 = 0x00, - .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; - ret = send_header(dev, &h); + /* if there is a cached copy of the device info, just return that */ + if (dev->device_info) + goto return_value; + + 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; - device_info->native_width = h.header_data.devinfo.native_width; - device_info->native_height = h.header_data.devinfo.native_height; + if (h.packet_type != AM7XXX_PACKET_TYPE_DEVINFO) { + error(dev->ctx, "expected packet type: %d, got %d instead!\n", + AM7XXX_PACKET_TYPE_DEVINFO, h.packet_type); + errno = ENOTSUP; + return -ENOTSUP; + } + + dev->device_info = malloc(sizeof(*dev->device_info)); + if (dev->device_info == NULL) { + error(dev->ctx, "cannot allocate a device info (%s)\n", + strerror(errno)); + return -ENOMEM; + } + memset(dev->device_info, 0, sizeof(*dev->device_info)); + + dev->device_info->native_width = h.header_data.devinfo.native_width; + dev->device_info->native_height = h.header_data.devinfo.native_height; #if 0 /* No reason to expose these in the public API until we know what they mean */ - device_info->unknown0 = h.header_data.devinfo.unknown0; - device_info->unknown1 = h.header_data.devinfo.unknown1; + dev->device_info->unknown0 = h.header_data.devinfo.unknown0; + dev->device_info->unknown1 = h.header_data.devinfo.unknown1; #endif +return_value: + if (device_info) + memcpy(device_info, dev->device_info, sizeof(*device_info)); return 0; } -int am7xxx_calc_scaled_image_dimensions(am7xxx_device *dev, +AM7XXX_PUBLIC int am7xxx_calc_scaled_image_dimensions(am7xxx_device *dev, unsigned int upscale, unsigned int original_width, unsigned int original_height, unsigned int *scaled_width, unsigned int *scaled_height) { - am7xxx_device_info device_info; float width_ratio; float height_ratio; @@ -754,7 +1327,7 @@ int am7xxx_calc_scaled_image_dimensions(am7xxx_device *dev, return 0; } -int am7xxx_send_image(am7xxx_device *dev, +AM7XXX_PUBLIC int am7xxx_send_image(am7xxx_device *dev, am7xxx_image_format format, unsigned int width, unsigned int height, @@ -764,7 +1337,7 @@ int am7xxx_send_image(am7xxx_device *dev, int ret; struct am7xxx_header h = { .packet_type = AM7XXX_PACKET_TYPE_IMAGE, - .unknown0 = 0x00, + .direction = AM7XXX_DIRECTION_OUT, .header_data_len = sizeof(struct am7xxx_image_header), .unknown2 = 0x3e, .unknown3 = 0x10, @@ -790,55 +1363,60 @@ int am7xxx_send_image(am7xxx_device *dev, return send_data(dev, image, image_size); } -int am7xxx_set_power_mode(am7xxx_device *dev, am7xxx_power_mode mode) +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, - .unknown0 = 0x00, - .header_data_len = sizeof(struct am7xxx_power_header), + .packet_type = AM7XXX_PACKET_TYPE_IMAGE, + .direction = AM7XXX_DIRECTION_OUT, + .header_data_len = sizeof(struct am7xxx_image_header), .unknown2 = 0x3e, .unknown3 = 0x10, + .header_data = { + .image = { + .format = format, + .width = width, + .height = height, + .image_size = image_size, + }, + }, }; - switch(mode) { - 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; + ret = send_header(dev, &h); + if (ret < 0) + return ret; - case AM7XXX_POWER_MIDDLE: - h.header_data.power.bit2 = 0; - h.header_data.power.bit1 = 1; - h.header_data.power.bit0 = 0; - break; + if (image == NULL || image_size == 0) { + warning(dev->ctx, "Not sending any data, check the 'image' or 'image_size' parameters\n"); + return 0; + } - case AM7XXX_POWER_HIGH: - h.header_data.power.bit2 = 0; - h.header_data.power.bit1 = 1; - h.header_data.power.bit0 = 1; - break; + return send_data_async(dev, image, image_size); +} - case AM7XXX_POWER_TURBO: - h.header_data.power.bit2 = 1; - h.header_data.power.bit1 = 0; - h.header_data.power.bit0 = 0; - break; +AM7XXX_PUBLIC int am7xxx_set_power_mode(am7xxx_device *dev, am7xxx_power_mode power) +{ + 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, "Power mode not supported!\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); }