X-Git-Url: https://git.ao2.it/libam7xxx.git/blobdiff_plain/4612a1475669091669d76054f341cd4a02b5c2d0..e533e30f52a029e7361cb782d00959990ceb11b7:/src/am7xxx.c?ds=sidebyside diff --git a/src/am7xxx.c b/src/am7xxx.c index f04b638..83d9a91 100644 --- a/src/am7xxx.c +++ b/src/am7xxx.c @@ -22,6 +22,7 @@ #include #include #include +#include #include "am7xxx.h" #include "serialize.h" @@ -35,6 +36,20 @@ # define __attribute__(x) /*NOTHING*/ #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, @@ -62,14 +77,29 @@ static struct am7xxx_usb_device_descriptor supported_devices[] = { .product_id = 0xc101, }, { + .name = "Acer C112", + .vendor_id = 0x1de1, + .product_id = 0x5501, + }, + { + .name ="Aiptek PocketCinema T25", + .vendor_id = 0x08ca, + .product_id = 0x2144, + }, + { .name = "Philips/Sagemcom PicoPix 1020", .vendor_id = 0x21e7, .product_id = 0x000e, }, + { + .name = "Philips/Sagemcom PicoPix 2055", + .vendor_id = 0x21e7, + .product_id = 0x0016, + }, }; /* The header size on the wire is known to be always 24 bytes, regardless of - * the memory configuration enforced by different architechtures or compilers + * the memory configuration enforced by different architectures or compilers * for struct am7xxx_header */ #define AM7XXX_HEADER_WIRE_SIZE 24 @@ -77,6 +107,7 @@ static struct am7xxx_usb_device_descriptor supported_devices[] = { struct _am7xxx_device { libusb_device_handle *usb_device; uint8_t buffer[AM7XXX_HEADER_WIRE_SIZE]; + am7xxx_device_info *device_info; am7xxx_context *ctx; am7xxx_device *next; }; @@ -91,7 +122,7 @@ 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; struct am7xxx_generic_header { @@ -121,6 +152,11 @@ struct am7xxx_power_header { uint32_t bit0; }; +struct am7xxx_zoom_header { + uint32_t bit1; + uint32_t bit0; +}; + /* * Examples of packet headers: * @@ -131,9 +167,13 @@ 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; @@ -142,6 +182,7 @@ 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; }; @@ -182,6 +223,16 @@ 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) @@ -189,7 +240,10 @@ 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); @@ -207,6 +261,10 @@ 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"); break; @@ -244,6 +302,7 @@ static void debug_dump_header(am7xxx_context *ctx, struct am7xxx_header *h) (void)ctx; (void)h; } + static void trace_dump_buffer(am7xxx_context *ctx, const char *message, uint8_t *buffer, unsigned int len) { @@ -278,7 +337,7 @@ static int send_data(am7xxx_device *dev, uint8_t *buffer, unsigned int len) trace_dump_buffer(dev->ctx, "sending -->", buffer, len); - ret = libusb_bulk_transfer(dev->usb_device, 1, buffer, len, &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); @@ -293,7 +352,7 @@ 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); @@ -308,7 +367,7 @@ 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); @@ -328,9 +387,16 @@ 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; @@ -342,7 +408,13 @@ 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"); @@ -389,8 +461,6 @@ 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)); @@ -400,6 +470,8 @@ static am7xxx_device *add_new_device(am7xxx_context *ctx) new_device->ctx = ctx; + devices_list = &(ctx->devices_list); + if (*devices_list == NULL) { *devices_list = new_device; } else { @@ -485,8 +557,8 @@ 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; @@ -526,7 +598,7 @@ static int scan_devices(am7xxx_context *ctx, scan_op op, goto out; } - libusb_set_configuration((*dev)->usb_device, 1); + libusb_set_configuration((*dev)->usb_device, 2); libusb_claim_interface((*dev)->usb_device, 0); goto out; } @@ -549,7 +621,9 @@ out: return ret; } -int am7xxx_init(am7xxx_context **ctx) +/* Public API */ + +AM7XXX_PUBLIC int am7xxx_init(am7xxx_context **ctx) { int ret = 0; @@ -588,7 +662,7 @@ out: return ret; } -void am7xxx_shutdown(am7xxx_context *ctx) +AM7XXX_PUBLIC void am7xxx_shutdown(am7xxx_context *ctx) { am7xxx_device *current; @@ -601,6 +675,7 @@ 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; } @@ -610,12 +685,12 @@ 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; @@ -628,16 +703,32 @@ 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. + * + * 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; } -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"); @@ -651,13 +742,13 @@ int am7xxx_close_device(am7xxx_device *dev) 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, + .direction = AM7XXX_DIRECTION_OUT, .header_data_len = 0x00, .unknown2 = 0x3e, .unknown3 = 0x10, @@ -671,6 +762,11 @@ int am7xxx_get_device_info(am7xxx_device *dev, }, }; + if (dev->device_info) { + memcpy(device_info, dev->device_info, sizeof(*device_info)); + return 0; + } + ret = send_header(dev, &h); if (ret < 0) return ret; @@ -679,18 +775,95 @@ int am7xxx_get_device_info(am7xxx_device *dev, 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 0; } -int am7xxx_send_image(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; + int ret; + + ret = am7xxx_get_device_info(dev, &device_info); + if (ret < 0) { + error(dev->ctx, "cannot get device info\n"); + return ret; + } + + /* + * Check if we need to rescale; if the input image fits the native + * dimensions there is no need to, unless we want to upscale. + */ + if (!upscale && + original_width <= device_info.native_width && + original_height <= device_info.native_height ) { + debug(dev->ctx, "CASE 0, no rescaling, the original image fits already\n"); + *scaled_width = original_width; + *scaled_height = original_height; + return 0; + } + + /* Input dimensions relative to the device native dimensions */ + width_ratio = (float)original_width / device_info.native_width; + height_ratio = (float)original_height / device_info.native_height; + + if (width_ratio > height_ratio) { + /* + * The input is proportionally "wider" than the device viewport + * so its height needs to be adjusted + */ + debug(dev->ctx, "CASE 1, original image wider, adjust the scaled height\n"); + *scaled_width = device_info.native_width; + *scaled_height = (unsigned int)lroundf(original_height / width_ratio); + } else if (width_ratio < height_ratio) { + /* + * The input is proportionally "taller" than the device viewport + * so its width needs to be adjusted + */ + debug(dev->ctx, "CASE 2 original image taller, adjust the scaled width\n"); + *scaled_width = (unsigned int)lroundf(original_width / height_ratio); + *scaled_height = device_info.native_height; + } else { + debug(dev->ctx, "CASE 3, just rescale, same aspect ratio already\n"); + *scaled_width = device_info.native_width; + *scaled_height = device_info.native_height; + } + debug(dev->ctx, "scaled dimensions: %dx%d\n", *scaled_width, *scaled_height); + + return 0; +} + +AM7XXX_PUBLIC int am7xxx_send_image(am7xxx_device *dev, am7xxx_image_format format, unsigned int width, unsigned int height, @@ -700,7 +873,7 @@ 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, @@ -726,18 +899,18 @@ 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_set_power_mode(am7xxx_device *dev, am7xxx_power_mode power) { int ret; struct am7xxx_header h = { .packet_type = AM7XXX_PACKET_TYPE_POWER, - .unknown0 = 0x00, + .direction = AM7XXX_DIRECTION_OUT, .header_data_len = sizeof(struct am7xxx_power_header), .unknown2 = 0x3e, .unknown3 = 0x10, }; - switch(mode) { + switch(power) { case AM7XXX_POWER_OFF: h.header_data.power.bit2 = 0; h.header_data.power.bit1 = 0; @@ -748,6 +921,7 @@ int am7xxx_set_power_mode(am7xxx_device *dev, am7xxx_power_mode mode) 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; @@ -768,7 +942,51 @@ int am7xxx_set_power_mode(am7xxx_device *dev, am7xxx_power_mode mode) break; default: - error(dev->ctx, "Power mode not supported!\n"); + error(dev->ctx, "Unsupported power mode.\n"); + return -EINVAL; + }; + + ret = send_header(dev, &h); + if (ret < 0) + return ret; + + return 0; +} + +AM7XXX_PUBLIC int am7xxx_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; + + default: + error(dev->ctx, "Unsupported zoom mode.\n"); return -EINVAL; };