1 /* am7xxx - communication with AM7XXX based USB Pico Projectors and DPFs
3 * Copyright (C) 2012 Antonio Ospite <ospite@studenti.unina.it>
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #include <libusb-1.0/libusb.h>
29 typedef libusb_device_handle *am7xxx_device;
32 AM7XXX_PACKET_TYPE_DEVINFO = 0x01,
33 AM7XXX_PACKET_TYPE_IMAGE = 0x02,
34 AM7XXX_PACKET_TYPE_POWER = 0x04,
35 AM7XXX_PACKET_TYPE_UNKNOWN = 0x05,
39 AM7XXX_IMAGE_FORMAT_JPEG = 1,
40 AM7XXX_IMAGE_FORMAT_NV12 = 2,
41 } am7xxx_image_format;
46 AM7XXX_POWER_MIDDLE = 2,
47 AM7XXX_POWER_HIGH = 3,
48 AM7XXX_POWER_TURBO = 4,
51 struct am7xxx_generic_header {
58 struct am7xxx_devinfo_header {
59 uint32_t native_width;
60 uint32_t native_height;
65 struct am7xxx_image_header {
72 struct am7xxx_power_header {
79 * Examples of packet headers:
82 * 02 00 00 00 00 10 3e 10 01 00 00 00 20 03 00 00 e0 01 00 00 53 E8 00 00
85 * 04 00 00 00 00 0c ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
88 /* The header size on the wire is known to be always 24 bytes, regardless of
89 * the memory configuration enforced by different architechtures or compilers
90 * for struct am7xxx_header
92 #define AM7XXX_HEADER_WIRE_SIZE 24
94 struct am7xxx_header {
97 uint8_t header_data_len;
101 struct am7xxx_generic_header data;
102 struct am7xxx_devinfo_header devinfo;
103 struct am7xxx_image_header image;
104 struct am7xxx_power_header power;
108 am7xxx_device am7xxx_init(void);
110 void am7xxx_shutdown(am7xxx_device dev);
112 int am7xxx_get_device_info(am7xxx_device dev,
113 unsigned int *native_width,
114 unsigned int *native_height,
115 unsigned int *unknown0,
116 unsigned int *unknown1);
118 int am7xxx_send_image(am7xxx_device dev,
119 am7xxx_image_format format,
126 * NOTE: if we set the mode to AM7XXX_POWER_OFF we can't turn the
127 * display on again by using only am7xxx_set_power_mode().
129 * Remember to mention that when writing the API doc.
131 int am7xxx_set_power_mode(am7xxx_device dev, am7xxx_power_mode mode);
137 #endif /* __AM7XXX_H */