#include <string.h>
#include <endian.h>
#include <errno.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+typedef enum {
+ AM7x01_PACKET_TYPE_INIT = 0x01,
+ AM7x01_PACKET_TYPE_IMAGE = 0x02,
+ AM7x01_PACKET_TYPE_POWER = 0x04,
+ AM7x01_PACKET_TYPE_UNKNOWN = 0x05,
+} am7x01_packet_type;
+
+typedef enum {
+ AM7x01_IMAGE_FORMAT_JPEG = 1,
+} am7x01_image_format;
+
+typedef enum {
+ AM7x01_POWER_OFF = 0,
+ AM7x01_POWER_LOW = 1,
+ AM7x01_POWER_MID = 2,
+ AM7x01_POWER_HIGH = 3,
+} am7x01_power_mode;
+
+struct image_header {
+ uint32_t format;
+ uint32_t width;
+ uint32_t height;
+ uint32_t image_size;
+};
+
+struct power_header {
+ uint32_t power_low;
+ uint32_t power_mid;
+ uint32_t power_high;
+};
/*
* Examples of packet headers:
* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
*/
-#define AM7x01_PACKET_TYPE_INIT 0x01
-#define AM7x01_PACKET_TYPE_IMAGE 0x02
-#define AM7x01_PACKET_TYPE_POWER 0x04
-#define AM7x01_PACKET_TYPE_UNKNOWN 0x05
-
-struct buffer {
- unsigned int len;
- uint8_t *data;
+static uint8_t reference_image_header[] = {
+ 0x02, 0x00, 0x00, 0x00,
+ 0x00,
+ 0x10,
+ 0x3e,
+ 0x10,
+ 0x01, 0x00, 0x00, 0x00,
+ 0x20, 0x03, 0x00, 0x00,
+ 0xe0, 0x01, 0x00, 0x00,
+ 0x53, 0xE8, 0x00, 0x00
};
-struct header{
+struct header {
uint32_t packet_type;
- uint32_t unknown1;
- uint32_t unknown2;
- uint32_t width;
- uint32_t height;
- uint32_t payload_size;
+ uint8_t unknown0;
+ uint8_t header_len;
+ uint8_t unknown2;
+ uint8_t unknown3;
+ union {
+ struct image_header image;
+ struct power_header power;
+ } header_data;
};
-struct packet {
- struct header header;
- uint8_t payload[];
-};
-static struct buffer *packet_allocate_buffer(struct packet *p)
+static void dump_image_header(struct image_header *i)
{
- struct buffer *buffer;
+ if (i == NULL)
+ return;
- if (p == NULL) {
- perror("packet NULL");
- return NULL;
- }
+ printf("Image header:\n");
+ printf("format: 0x%08x (%u)\n", i->format, i->format);
+ printf("width: 0x%08x (%u)\n", i->width, i->width);
+ printf("height: 0x%08x (%u)\n", i->height, i->height);
+ printf("image size: 0x%08x (%u)\n", i->image_size, i->image_size);
+}
- buffer = malloc(sizeof(*buffer));
- if (buffer == NULL) {
- perror("malloc buffer");
- return NULL;
- }
+static void dump_header(struct header *h)
+{
+ if (h == NULL)
+ return;
+
+ printf("packet_type: 0x%08x (%u)\n", h->packet_type, h->packet_type);
+ printf("unknown0: 0x%02hhx (%hhu)\n", h->unknown0, h->unknown0);
+ printf("header_len: 0x%02hhx (%hhu)\n", h->header_len, h->header_len);
+ printf("unknown2: 0x%02hhx (%hhu)\n", h->unknown2, h->unknown2);
+ printf("unknown3: 0x%02hhx (%hhu)\n", h->unknown3, h->unknown3);
- buffer->len = sizeof(p->header); /* + p->header.payload_size; */
+ switch(h->packet_type) {
+ case AM7x01_PACKET_TYPE_IMAGE:
+ dump_image_header(&(h->header_data.image));
+ break;
- buffer->data = malloc(buffer->len);
- if (buffer->data == NULL) {
- perror("malloc buffer->data");
- free(buffer);
- return NULL;
+ default:
+ printf("Packet type not supported!\n");
+ break;
}
- return buffer;
+
+ fflush(stdout);
}
-static void packet_free_buffer(struct buffer *buffer)
+static inline unsigned int in_80chars(unsigned int i)
{
- free(buffer->data);
- free(buffer);
- buffer = NULL;
+ return ((i+1) % (80/3));
}
-static int packet_pack(struct packet *p, struct buffer *buffer)
+static void dump_buffer(uint8_t *buffer, unsigned int len)
{
- unsigned int offset;
- uint32_t tmp;
-
- if (p == NULL || buffer == NULL)
- return -EINVAL;
-
- /* TODO: check for packet payload being NULL? */
- if (buffer->data == NULL || buffer->len < sizeof(*p))
- return -EINVAL;
-
- offset = 0;
-
- tmp = htole32(p->header.packet_type);
- memcpy(buffer->data + offset, &tmp, sizeof(p->header.packet_type));
- offset += sizeof(p->header.packet_type);
-
- tmp = htole32(p->header.unknown1);
- memcpy(buffer->data + offset, &tmp, sizeof(p->header.unknown1));
- offset += sizeof(p->header.unknown1);
-
- tmp = htole32(p->header.unknown2);
- memcpy(buffer->data + offset, &tmp, sizeof(p->header.unknown2));
- offset += sizeof(p->header.unknown2);
-
- tmp = htole32(p->header.width);
- memcpy(buffer->data + offset, &tmp, sizeof(p->header.width));
- offset += sizeof(p->header.width);
-
- tmp = htole32(p->header.height);
- memcpy(buffer->data + offset, &tmp, sizeof(p->header.height));
- offset += sizeof(p->header.height);
+ unsigned int i;
- tmp = htole32(p->header.payload_size);
- memcpy(buffer->data + offset, &tmp, sizeof(p->header.payload_size));
- offset += sizeof(p->header.payload_size);
+ if (buffer == NULL || len == 0)
+ return;
- /* TODO memcpy payload of size */
+ for (i = 0; i < len; i++) {
+ printf("%02hhX%c", buffer[i], (in_80chars(i) && (i < len - 1)) ? ' ' : '\n');
+ }
+ fflush(stdout);
+}
+static int send_data(uint8_t *buffer, unsigned int len)
+{
+ dump_buffer(buffer, len);
return 0;
}
-static int packet_unpack(struct buffer *buffer, struct packet *p)
+static int send_header(struct header *h)
{
- unsigned int offset;
- uint32_t tmp;
-
- if (p == NULL || buffer == NULL)
- return -EINVAL;
-
- /* TODO: check for packet payload being NULL? */
- if (buffer->data == NULL || buffer->len < sizeof(*p))
- return -EINVAL;
-
- offset = 0;
+ union {
+ struct header header;
+ uint8_t buffer[sizeof (struct header)];
+ } data;
- memcpy(&tmp, buffer->data + offset, sizeof(p->header.packet_type));
- p->header.packet_type = le32toh(tmp);
- offset += sizeof(p->header.packet_type);
+ data.header = *h;
- memcpy(&tmp, buffer->data + offset, sizeof(p->header.unknown1));
- p->header.unknown1 = le32toh(tmp);
- offset += sizeof(p->header.unknown1);
+ return send_data(data.buffer, sizeof (struct header));
+}
- memcpy(&tmp, buffer->data + offset, sizeof(p->header.unknown2));
- p->header.unknown2 = le32toh(tmp);
- offset += sizeof(p->header.unknown2);
+static int send_image(am7x01_image_format format,
+ unsigned int width,
+ unsigned int height,
+ uint8_t *image,
+ unsigned int size)
+{
+ int ret;
+ struct header h = {
+ .packet_type = htole32(AM7x01_PACKET_TYPE_IMAGE),
+ .unknown0 = 0x00,
+ .header_len = sizeof(struct image_header),
+ .unknown2 = 0x3e,
+ .unknown3 = 0x10,
+ .header_data = {
+ .image = {
+ .format = htole32(format),
+ .width = htole32(width),
+ .height = htole32(height),
+ .image_size = htole32(size),
+ },
+ },
+ };
- memcpy(&tmp, buffer->data + offset, sizeof(p->header.width));
- p->header.width = le32toh(tmp);
- offset += sizeof(p->header.width);
+ dump_header(&h);
+ printf("\n");
- memcpy(&tmp, buffer->data + offset, sizeof(p->header.height));
- p->header.height = le32toh(tmp);
- offset += sizeof(p->header.height);
+ printf("Dump Buffers\n");
+ dump_buffer(reference_image_header, sizeof(struct header));
- memcpy(&tmp, buffer->data + offset, sizeof(p->header.payload_size));
- p->header.payload_size = le32toh(tmp);
- offset += sizeof(p->header.payload_size);
+ ret = send_header(&h);
+ if (ret < 0)
+ return ret;
- /* malloc & memcpy payload of size p->header.payload_size */
+ if (image == NULL || size == 0)
+ return 0;
- return 0;
+ return send_data(image, size);
}
-static void packet_dump_header(struct packet *p)
+static void usage(char *name)
{
- if (p == NULL)
- return;
-
- printf("packet_type: 0x%08x (%u)\n", p->header.packet_type, p->header.packet_type);
- printf("unknown1: 0x%08x (%u)\n", p->header.unknown1, p->header.unknown1);
- printf("unknown2: 0x%08x (%u)\n", p->header.unknown2, p->header.unknown2);
- printf("width: 0x%08x (%u)\n", p->header.width, p->header.width);
- printf("height: 0x%08x (%u)\n", p->header.height, p->header.height);
- printf("size: 0x%08x (%u)\n", p->header.payload_size, p->header.payload_size);
- fflush(stdout);
+ printf("usage: %s [OPTIONS]\n\n", name);
+ printf("OPTIONS:\n");
+ printf("\t-f <filename>\t\tthe image file to upload\n");
+ printf("\t-F <format>\t\tthe image format to use (default is JPEG).\n");
+ printf("\t\t\t\tSUPPORTED FORMATS:\n");
+ printf("\t\t\t\t\t1 - JPEG\n");
+ printf("\t-W <image width>\tthe width of the image to upload\n");
+ printf("\t-H <image height>\tthe height of the image to upload\n");
+ printf("\t-h \t\t\tthis help message\n");
}
-static void packet_dump_buffer(struct buffer *buffer)
+int main(int argc, char *argv[])
{
- unsigned int i;
-
- if (buffer == NULL)
- return;
-
- if (buffer->data == NULL)
- return;
-
- for (i = 0; i < buffer->len; i++) {
- printf("%02hhX%c", buffer->data[i], (i < buffer->len - 1) ? ' ' : '\n');
- }
- fflush(stdout);
-}
-
-int main(void)
-{
- struct packet p1 = {
- .header = {
- .packet_type = AM7x01_PACKET_TYPE_IMAGE,
- .unknown1 = le32toh(0x103e1000),
- .unknown2 = le32toh(0x00000001),
- .width = 800,
- .height = 480,
- .payload_size = 59475,
- },
- /* TODO initialize payload */
- };
- struct buffer *buffer = NULL;
- struct packet p2;
int ret;
+ int exit_code = EXIT_SUCCESS;
+ int opt;
+
+ char filename[FILENAME_MAX] = {0};
+ int image_fd = -1;
+ int format = AM7x01_IMAGE_FORMAT_JPEG;
+ int width = 800;
+ int height = 480;
+ uint8_t *image = NULL;
+ unsigned int size = 59475;
+
+ while ((opt = getopt(argc, argv, "f:F:W:H:h")) != -1) {
+ switch (opt) {
+ case 'f':
+ strncpy(filename, optarg, FILENAME_MAX);
+ break;
+ case 'F':
+ format = atoi(optarg);
+ if (format != 1) {
+ fprintf(stderr, "Unsupported format\n");
+ exit(EXIT_FAILURE);
+ }
+ break;
+ case 'W':
+ width = atoi(optarg);
+ if (width < 0) {
+ fprintf(stderr, "Unsupported width\n");
+ exit(EXIT_FAILURE);
+ }
+ break;
+ case 'H':
+ height = atoi(optarg);
+ if (height < 0) {
+ fprintf(stderr, "Unsupported height\n");
+ exit(EXIT_FAILURE);
+ }
+ break;
+ default: /* '?' */
+ usage(argv[0]);
+ exit(EXIT_FAILURE);
+ }
+ }
- packet_dump_header(&p1);
-
- buffer = packet_allocate_buffer(&p1);
- if (buffer == NULL) {
- fprintf(stderr, "Cannot allocate the buffer.\n");
- exit(EXIT_FAILURE);
+ if (filename[0] != '\0') {
+ struct stat st;
+
+ image_fd = open(filename, O_RDONLY);
+ if (image_fd < 0) {
+ perror("open");
+ exit_code = EXIT_FAILURE;
+ goto out;
+ }
+ if (fstat(image_fd, &st) < 0) {
+ perror("fstat");
+ exit_code = EXIT_FAILURE;
+ goto out_close_image_fd;
+ }
+ size = st.st_size;
+
+ image = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, image_fd, 0);
+ if (image == NULL) {
+ perror("mmap");
+ exit_code = EXIT_FAILURE;
+ goto out_close_image_fd;
+ }
}
- ret = packet_pack(&p1, buffer);
+ ret = send_image(format, width, height, image, size);
if (ret < 0) {
- fprintf(stderr, "Cannot pack the packet.\n");
- exit(EXIT_FAILURE);
+ perror("send_image");
+ exit_code = EXIT_FAILURE;
+ goto cleanup;
}
- packet_dump_buffer(buffer);
+ exit_code = EXIT_SUCCESS;
- ret = packet_unpack(buffer, &p2);
- if (ret < 0) {
- fprintf(stderr, "Cannot unpack the packet.\n");
- exit(EXIT_FAILURE);
+cleanup:
+ if (image != NULL) {
+ ret = munmap(image, size);
+ if (ret < 0)
+ perror("munmap");
}
- packet_dump_header(&p2);
-
- packet_free_buffer(buffer);
+out_close_image_fd:
+ if (image_fd >= 0) {
+ ret = close(image_fd);
+ if (ret < 0)
+ perror("close");
+ }
- exit(EXIT_SUCCESS);
+out:
+ exit(exit_code);
}
projects / libam7xxx.git / blobdiff