/*
* Capture an image
*/
static int
camera_capture (Camera* camera, CameraCaptureType type, CameraFilePath* path,
GPContext *context)
{
unsigned char cmd[3], buf[256], ack;
int ret, nbr_images,images_taken,i;
GP_DEBUG ("*** ENTER: camera_capture ***");
/* Just check if there is space available yet */
cmd[0] = ESC;
cmd[1] = GETCAMINFO;
ret = gp_port_write (camera->port, (char*)cmd, 2);
if (ret<GP_OK)
return ret;
ret = gp_port_read (camera->port, (char*)buf, INFO_BUFFER);
nbr_images = (buf[FREE_IMAGE_PTR] << 8) | (buf[FREE_IMAGE_PTR+1]);
images_taken = (buf[TAKEN_IMAGE_PTR] << 8) | (buf[TAKEN_IMAGE_PTR+1]);
/* Capture the image */
cmd[0] = ESC;
cmd[1] = CAPTUREIMAGE_CMD1;
cmd[2] = CAPTUREIMAGE_CMD2;
ret = gp_port_write (camera->port, (char*)cmd, sizeof(cmd));
if (ret<GP_OK)
return ret;
ret = gp_port_read (camera->port, (char*)&ack, ACK_LEN);
if (ret<GP_OK)
return ret;
if (ack == NACK) {
if (buf[CAMERA_MODE_PTR] != REC_MODE)
gp_context_error(context, _("You must be in record "
"mode to capture images."));
else if (!nbr_images)
gp_context_error(context, _("No space available "
"to capture new images. You must delete some "
"images."));
else
gp_context_error(context, _("Can't capture new images. "
"Unknown error"));
return (GP_ERROR);
}
/* Wait image writting in camera's memory */
for (i=0; i<=15; i++) {
sleep(1);
if ((ret = k_ping(camera->port)) == GP_OK)
break;
}
if (ret < GP_OK) {
gp_context_error(context, _("No answer from the camera."));
return (GP_ERROR);
}
/* Now register new image */
images_taken++;
sprintf (path->name, FILENAME, (unsigned int) images_taken);
return (GP_OK);
}
int
digi_init (GPPort *port, CameraPrivateLibrary *priv)
{
char c[0x14];
int i,j=0;
unsigned char *catalog = calloc(0x4010,1);
unsigned char *catalog_tmp;
if (!catalog) return GP_ERROR_NO_MEMORY;
SQWRITE (port, 0x0c, 0x14f4, 0x0, NULL, 0);
SQREAD (port, 0x0c, 0xf5, 0x00, c, 0x14);
SQWRITE (port, 0x0c, 0x1440, 0x110f, NULL, 0);
digi_reset (port);
SQWRITE (port, 0x0c, 0x14f0, 0x0, NULL, 0);
gp_port_read (port, c, 0x14);
digi_reset(port);
SQWRITE (port, 0x0c, 0x20, 0x40, NULL, 0);
gp_port_read(port, (char *)catalog, 0x4000); /* We need 16 bytes for each photo. */
digi_reset (port);
/* The first occurence of a zero denotes end of files entries */
for (i=0; i<0x4000 && catalog[i]; i+=16);
priv->nb_entries = i>>4;
catalog_tmp = realloc(catalog, i+16);
memset (catalog_tmp+i, 0, 16);
if (i) {
/*
* 0x913c cameras allow individual photo deletion. This causes
* the relevant catalog line to start with 0x64. So the related
* lines of config data must be removed, and the deleted
* images need to be cast out from the count.
*/
for (j=0; j<i; j+=16) {
if ((!catalog[j])||(catalog_tmp[j] == 0x64)) {
memcpy(catalog_tmp+j, catalog_tmp+j+16, i+16-j);
priv->nb_entries -- ;
}
}
if (catalog_tmp) priv->catalog = catalog_tmp;
else priv->catalog = catalog;
} else {
free (catalog);
priv->catalog = NULL; /* We just have freed catalog_tmp */
}
digi_reset (port);
priv->last_fetched_entry = -1;
priv->init_done=1;
return GP_OK;
}
/*
* Delete all images
*/
static int
delete_all_func (CameraFilesystem *fs, const char *folder, void *data,
GPContext *context)
{
unsigned char cmd[7], ack;
int ret;
Camera *camera = data;
GP_DEBUG ("*** ENTER: delete_all_func ***");
cmd[0] = ESC;
cmd[1] = ERASEIMAGE_CMD1;
cmd[2] = IMAGE_CMD2;
cmd[3] = 0x30;
cmd[4] = 0x30;
cmd[5] = 0x30;
cmd[6] = 0x30;
ret = gp_port_write (camera->port, (char*)cmd, sizeof(cmd));
if (ret<GP_OK) return ret;
ret = gp_port_read (camera->port, (char*)&ack, ACK_LEN);
if (ret<GP_OK) return ret;
if (ack != ACK) {
gp_context_error(context, _("Can't delete all images."));
return (GP_ERROR);
}
return (GP_OK);
}
int digita_usb_open(CameraPrivateLibrary *dev, Camera *camera)
{
GPPortSettings settings;
unsigned char buffer[128];
int ret;
ret = gp_port_get_settings(camera->port, &settings);
if (ret < 0)
return ret;
/* We'll take the defaults. The core should have the done what's */
/* necessary to find the config, interface, altsetting and endpoints */
ret = gp_port_set_settings(dev->gpdev, settings);
if (ret < 0)
return ret;
dev->send = digita_usb_send;
dev->read = digita_usb_read;
gp_port_set_timeout(camera->port, 100);
/* Mop up anything still pending */
while (gp_port_read(dev->gpdev, buffer, sizeof(buffer)) > 0)
;
gp_port_set_timeout(camera->port, 10000);
return GP_OK;
}
static int
m_read (GPPort *port, char *data, int size)
{
gp_port_write(port, "\x21", 1);
gp_port_read(port, data, 16);
return GP_OK;
}
/* Read exactly this number of bytes from the port within the given timeouts */
int
mesa_read( GPPort *port, uint8_t *b, int s, int timeout2, int timeout1 )
{
int n = 0;
int r, t;
struct timeval start, now;
t = timeout1 ? timeout1 : timeout2; /* set first byte timeout */
gettimeofday( &start, NULL );
do
{
/* limit reads to 1k segment */
r = gp_port_read( port, &b[n], s>1024?1024:s );
if ( r > 0 )
{
n += r;
s -= r;
gettimeofday( &start, NULL );
t = timeout2;
}
gettimeofday( &now, NULL );
} while ( s > 0 && t > timediff( &now, &start ) );
return n;
}
int
digi_read_picture_data (GPPort *port, unsigned char *data, int size, int n )
{
int remainder = size % 0x8000;
int offset = 0;
if (!n) {
SQWRITE (port, 0x0c, 0x30, 0x00, NULL, 0);
}
while ((offset + 0x8000 < size)) {
gp_port_read (port, (char *)data + offset, 0x8000);
offset = offset + 0x8000;
}
gp_port_read (port, (char *)data + offset, remainder);
return GP_OK;
}
int
camera_init (Camera *camera, GPContext *context)
{
GPPortSettings settings;
int speeds[] = { 115200, 9600, 19200, 38400, 57600, 115200 };
int ret, i;
char cmd[3], buf[1];
/* First, set up all the function pointers. */
camera->functions->capture = camera_capture;
camera->functions->about = camera_about;
camera->functions->get_config = camera_get_config;
camera->functions->set_config = camera_set_config;
camera->functions->summary = camera_summary;
camera->functions->manual = camera_manual;
/* Now, tell the filesystem where to get lists, files and info */
gp_filesystem_set_funcs (camera->fs, &fsfuncs, camera);
/*
* The port is already provided with camera->port (and
* already open). You just have to use functions like
* gp_port_timeout_set, gp_port_settings_get, gp_port_settings_set.
*/
gp_port_get_settings (camera->port, &settings);
settings.serial.speed = 115200;
settings.serial.bits = 8;
settings.serial.stopbits= 1;
settings.serial.parity = 0;
gp_port_set_settings (camera->port, settings);
/*
* Once you have configured the port, you should check if a
* connection to the camera can be established.
*/
for (i=0;i<sizeof(speeds)/sizeof(speeds[0]);i++) {
gp_port_get_settings (camera->port, &settings);
settings.serial.speed = speeds[i];
gp_port_set_settings (camera->port, settings);
if (GP_OK<=k_ping (camera->port))
break;
}
if (i == sizeof(speeds)/sizeof(speeds[0]))
return GP_ERROR;
cmd[0] = ESC;
cmd[1] = SETSPEED;
cmd[2] = 0x30 + 4; /* speed nr 4:(9600, 19200, 38400, 57600, 115200) */
ret = gp_port_write (camera->port, cmd, 3);
if (ret<GP_OK) return ret;
ret = gp_port_read (camera->port, buf, 1);
if (ret<GP_OK) return ret;
if (buf[0] != ACK) return GP_ERROR;
gp_port_get_settings (camera->port, &settings);
settings.serial.speed = 115200;
gp_port_set_settings (camera->port, settings);
return GP_OK;
}
int
jl2005c_read_data (GPPort *port, char *data, int size)
{
/* These cameras tend to be slow. */
usleep (10000);
gp_port_read (port, data, size);
usleep (10000);
return GP_OK;
}
static int
mars_routine (Info *info, GPPort *port, char param, int n)
{
char c[16];
char start[2] = {0x19, 0x51};
char do_something[2];
char address1[2];
char address2[2];
char address3[2];
char address4[2];
char address5[2];
char address6[2];
do_something[0]= 0x19;
do_something[1]=param;
/* See protocol.txt for my theories about what these mean. */
address1[0] = 0x19;
address1[1] = info[8*n+1];
address2[0] = 0x19;
address2[1] = info[8*n+2];
address3[0] = 0x19;
address3[1] = info[8*n+3];
address4[0] = 0x19;
address4[1] = info[8*n+4];
address5[0] = 0x19;
address5[1] = info[8*n+5];
address6[0] = 0x19;
address6[1] = info[8*n+6];
memset(c,0,sizeof(c));
/*Routine used in initialization, photo download, and reset. */
m_read(port, c, 16);
m_command(port, start, 2, c);
m_command(port, do_something, 2, c);
m_command(port, address1, 2, c);
c[0] = 0;
gp_port_write(port, address2, 2);
/* Moving the memory cursor to the given address? */
while (( c[0] != 0xa) ) {
m_read(port, c, 16);
}
m_command(port, address3, 2, c);
m_command(port, address4, 2, c);
m_command(port, address5, 2, c);
m_command(port, address6, 2, c);
gp_port_write(port, "\x19", 1);
gp_port_read(port, c , 16);
/* Next thing is to switch the inep. Some cameras need a pause here */
usleep (MARS_SLEEP);
return(c[0]);
}
/*
* Read block described by req
*/
static int
sx330z_read_block(Camera *camera, GPContext *context, struct traveler_req *req, uint8_t *buf)
{
int ret;
uint8_t trxbuf[0x20];
/* 1. send request */
sx330z_fill_req(trxbuf, req);
ret = gp_port_usb_msg_write(camera->port,
USB_REQ_RESERVED, req->requesttype, 0, (char *)trxbuf, 0x20);
if (ret != 0x20) return(GP_ERROR_IO_WRITE);
/* 2. read data */
ret = gp_port_read(camera->port, (char *)buf, req->size);
if (ret != req->size)return(GP_ERROR_IO_READ);
/* 3. read Ack */
ret = gp_port_read(camera->port, (char *)trxbuf, 0x10);
if (ret != 0x10) return(GP_ERROR);
/* FIXME : Security check ???*/
return(GP_OK);
} /* read block */
static int
ultrapocket_command(GPPort *port, int iswrite, unsigned char *data, int datasize) {
int ret;
if (iswrite)
ret = gp_port_write(port, (char *)data, datasize);
else
ret = gp_port_read(port, (char *)data, datasize);
return ret;
}
/*
* Read image informations
*/
static int
k_info_img (unsigned int image_no, void *data, CameraFileInfo* info,
int *data_number)
{
unsigned char cmd[6], buf[INFO_BUFFER];
Camera *camera = data;
int ret;
/* Read file information */
cmd[0] = ESC;
cmd[1] = GETIMAGEINFO;
cmd[2] = 0x30 + ((image_no/1000)%10);
cmd[3] = 0x30 + ((image_no/100 )%10);
cmd[4] = 0x30 + ((image_no/10 )%10);
cmd[5] = 0x30 + ( image_no %10);
ret = gp_port_write (camera->port, (char*)cmd, sizeof(cmd));
if (ret<GP_OK) return ret;
ret = gp_port_read (camera->port, (char*)buf, INFO_BUFFER);
if (ret<GP_OK) return ret;
/* Search the image data number into the memory */
if (data_number != NULL)
*data_number = (buf[IMAGE_NUMBER] << 8)
| (buf[IMAGE_NUMBER+1]);
/* Get the file info here and write it into <info> */
/* There is no audio support with this camera */
info->audio.fields = GP_FILE_INFO_NONE;
/* Preview informations */
info->preview.fields = GP_FILE_INFO_TYPE | GP_FILE_INFO_SIZE
| GP_FILE_INFO_WIDTH | GP_FILE_INFO_HEIGHT;
strcpy (info->preview.type, GP_MIME_JPEG);
info->preview.size = ((buf[PREVIEW_SIZE_PTR] << 24) |
(buf[PREVIEW_SIZE_PTR+1] << 16) | (buf[PREVIEW_SIZE_PTR+2] << 8)
| buf[PREVIEW_SIZE_PTR+3]);
info->preview.width = PREVIEW_WIDTH;
info->preview.height = PREVIEW_HEIGHT;
/* Image information */
info->file.fields = GP_FILE_INFO_TYPE | GP_FILE_INFO_SIZE
| GP_FILE_INFO_WIDTH | GP_FILE_INFO_HEIGHT
| GP_FILE_INFO_PERMISSIONS;
strcpy (info->file.type, GP_MIME_JPEG);
info->file.size = ((buf[IMAGE_SIZE_PTR] << 24) |
(buf[IMAGE_SIZE_PTR+1] << 16) | (buf[IMAGE_SIZE_PTR+2] << 8)
| buf[IMAGE_SIZE_PTR+3]);
info->file.width = IMAGE_WIDTH;
info->file.height = IMAGE_HEIGHT;
if (buf[IMAGE_PROTECTION_FLAG] == IMAGE_PROTECTED)
info->file.permissions = GP_FILE_PERM_READ;
else
info->file.permissions = GP_FILE_PERM_ALL;
return (GP_OK);
}
static int aox_read_data (GPPort *port, char *data, int size)
{
int MAX_BULK = 0x1000;
while(size > 0) {
int len = (size>MAX_BULK)?MAX_BULK:size;
gp_port_read (port, data, len); /* 0x84 = EP IN NEEDED HERE.*/
data += len;
size -= len;
}
return 1;
}
static int
ultrapocket_skip(GPPort *port, int npackets)
{
int old_timeout = 200;
unsigned char retbuf[0x1000];
gp_port_get_timeout(port, &old_timeout);
gp_port_set_timeout(port, 100);
for (; (npackets > 0) && gp_port_read(port, (char *)retbuf, 0x1000); npackets--);
gp_port_set_timeout(port, old_timeout);
return GP_OK;
}
int digi_delete_all (GPPort *port, CameraPrivateLibrary *priv)
{
int size;
int num_pics;
unsigned char get_size[0x50];
unsigned char *junk=NULL;
num_pics = priv->nb_entries;
GP_DEBUG("number of entries is %i\n", num_pics);
digi_reset (port);
digi_reset (port);
if(!num_pics) {
GP_DEBUG("Camera is already empty!\n");
return GP_OK;
}
SQWRITE (port, 0x0c, 0x1440, 0x110f, NULL, 0);
if ((gp_port_read(port, (char *)get_size, 0x50)!=0x50)) {
GP_DEBUG("Error in reading data\n");
return GP_ERROR;
}
GP_DEBUG("get_size[0x40] = 0x%x\n", get_size[0x40]);
size = get_size[0x40]|(get_size[0x41]<<8)|(get_size[0x42]<<16)|
(get_size[0x43]<<24);
GP_DEBUG("size = 0x%x\n", size);
if(size <= 0xff) {
GP_DEBUG("No size to read. This will not work.\n");
digi_reset(port);
return GP_OK;
}
junk = malloc(size);
if(! junk) {
GP_DEBUG("allocation of junk space failed\n");
return GP_ERROR_NO_MEMORY;
}
gp_port_read(port, (char *)junk, size);
free(junk);
digi_reset (port);
return GP_OK;
}
/*
* receive Bytes from camera
*/
int mdc800_rs232_receive (GPPort *port,unsigned char* buffer, int b)
{
int ret;
gp_port_set_timeout (port,MDC800_DEFAULT_TIMEOUT );
ret=gp_port_read(port,(char*)buffer,b);
if (ret!=b)
{
printCError ("(mdc800_rs232_receive) can't read %i Bytes !\n",b);
return GP_ERROR_IO;
}
return GP_OK;
}
static int
ez200_read_data (GPPort *port, char *data, int size) {
int MAX_BULK = 0x1000;
/* Read Data by blocks */
while(size > 0) {
int len = (size>MAX_BULK)?MAX_BULK:size;
gp_port_read (port, data, len);
data += len;
size -= len;
}
return 1;
}
/*
* l859_disconnect - reset camera, free buffers and close files
*/
static int l859_disconnect(Camera *camera) {
GP_DEBUG ("Disconnecting the camera.");
if (l859_sendcmd(camera, L859_CMD_RESET) != GP_OK)
return GP_ERROR;
if (gp_port_read(camera->port, camera->pl->buf, 1) == GP_ERROR)
return GP_ERROR;
GP_DEBUG ("Camera disconnected.");
return GP_OK;
}
static uint16_t
ptp_usb_getpacket(PTPParams *params,
PTPUSBBulkContainer *packet, unsigned long *rlen)
{
int tries = 0, result;
Camera *camera = ((PTPData *)params->data)->camera;
gp_log (GP_LOG_DEBUG, "ptp2/ptp_usb_getpacket", "getting next ptp packet");
/* read the header and potentially the first data */
if (params->response_packet_size > 0) {
gp_log (GP_LOG_DEBUG, "ptp2/ptp_usb_getpacket", "queuing buffered response packet");
/* If there is a buffered packet, just use it. */
memcpy(packet, params->response_packet, params->response_packet_size);
*rlen = params->response_packet_size;
free(params->response_packet);
params->response_packet = NULL;
params->response_packet_size = 0;
/* Here this signifies a "virtual read" */
return PTP_RC_OK;
}
retry:
/* A packet should come in a single read always. */
result = gp_port_read (camera->port, (char*)packet, sizeof(*packet));
/* This might be a left over zero-write of the device at the end of the previous transmission */
if (result == 0)
result = gp_port_read (camera->port, (char*)packet, sizeof(*packet));
if (result > 0) {
*rlen = result;
return PTP_RC_OK;
}
if (result == GP_ERROR_IO_READ) {
gp_log (GP_LOG_DEBUG, "ptp2/usbread", "Clearing halt on IN EP and retrying once.");
gp_port_usb_clear_halt (camera->port, GP_PORT_USB_ENDPOINT_IN);
/* retrying only makes sense if we did not read anything yet */
if (tries++ < 1)
goto retry;
}
return PTP_ERROR_IO;
}
/*
* Get the table of contents (directory) from the cam
*
* Verified: Yes
*/
static int enigma13_get_toc(Camera *camera, int *filecount, char** toc)
{
char* flash_toc=NULL;
int toc_size = 0;
char buf[10];
uint16_t response = 0;
int ret=1;
CHECK(enigma13_wait_for_ready(camera));
CHECK (gp_port_usb_msg_read (camera->port,
0x54, 0x0000, 0x0000,
(char*)&response, 0x02));
LE16TOH (response);
*filecount = response;
/* Calc toc size */
toc_size = (response) * 0x20;
if (toc_size % 0x200 != 0)
toc_size = ((toc_size / 0x200) + 1) * 0x200;
CHECK(enigma13_wait_for_ready(camera));
CHECK (gp_port_usb_msg_write (camera->port, 0x54,
response, 0x0001,
NULL, 0x0000));
/* Wait until cam is ready to send the T.O.C */
usleep(ENIGMA13_WAIT_TOC_DELAY_MS * 1000);
CHECK (gp_port_usb_msg_read (camera->port, 0x21,
0x0000, 0x0000,
buf, 0x01));
if (buf[0]!=0x41) return GP_ERROR;
CHECK (gp_port_usb_msg_read (camera->port, 0x21,
0x0000, 0x0002,
buf, 0x01));
if (buf[0]!=0x01) return GP_ERROR;
flash_toc = (char*)malloc(toc_size);
if (!flash_toc)
return GP_ERROR_NO_MEMORY;
ret=gp_port_read (camera->port, flash_toc, toc_size);
*toc= flash_toc;
gp_log(GP_LOG_DEBUG, "enigma13","Byte transferred :%d ", ret);
return ret;
}
static int
dread(GPPort *port, caddr_t buf, int xsize) {
int i;
int ret = gp_port_read(port,buf,xsize);
if (ret == -1) {
perror("dread");
return -1;
}
fprintf(stderr,"dread[%d]:",ret);
for (i=0;i<ret;i++) fprintf(stderr,"%02x,",buf[i]);
fprintf(stderr,"\n");
return ret;
}
/*
* Check the connection and the camera
*/
static int
k_ping (GPPort *port) {
char cmd[2], buf[1];
int ret;
cmd[0] = ESC;
cmd[1] = PING;
ret = gp_port_write (port, cmd, 2);
if (ret<GP_OK) return ret;
ret = gp_port_read (port, buf, 1);
if (ret<GP_OK) return ret;
if (buf[0] != ACK) return GP_ERROR;
return GP_OK;
}
static int digita_serial_read(CameraPrivateLibrary *dev, void *_buffer, int len)
{
char *buffer = _buffer;
unsigned short s;
int received = 0, size, eob;
while (received < len) {
if (poll_and_reply(dev->gpdev, &size, &eob, 0) < 0)
return -1;
if (gp_port_read(dev->gpdev, buffer + received, size) < 0)
return -1;
received += size;
if (eob)
break;
}
if (gp_port_read(dev->gpdev, (void *)&s, sizeof(s)) < 0)
return -1;
return received;
}
static int
mars_read_data (GPPort *port, char *data, int size)
{
int MAX_BULK = 0x2000;
int len = 0;
while(size > 0) {
len = (size>MAX_BULK)?MAX_BULK:size;
gp_port_read (port, data, len);
data += len;
size -= len;
}
return 1;
}
static int
SDSC_receive (GPPort *port, unsigned char *buf, int length)
{
char tmp[3];
int i, result = GP_OK;
for (i = 0; i < SDSC_RETRIES; i++) {
/* Read the header (3 bytes) and check for EOF */
CHECK_RESULT (gp_port_read (port, tmp, 1));
if (tmp[0] == 0x04)
return (SDSC_ERROR_EOF);
result = gp_port_read (port, tmp, 2);
if (result < 0) {
CHECK_RESULT (SDSC_send (port, SDSC_RETRANSMIT));
continue;
}
/* Read data */
result = gp_port_read (port, buf, length);
if (result < 0) {
CHECK_RESULT (SDSC_send (port, SDSC_RETRANSMIT));
continue;
}
/* Read footer (2 bytes) */
result = gp_port_read (port, tmp, 2);
if (result < 0) {
CHECK_RESULT (SDSC_send (port, SDSC_RETRANSMIT));
continue;
}
break;
}
return (result);
}
/*
* l859_retrcmd - Packet received from camera
*/
static int l859_retrcmd(Camera *camera) {
int s;
if ((s = gp_port_read(camera->port, camera->pl->buf, 116)) == GP_ERROR)
return GP_ERROR;
if (s != 116)
return GP_ERROR;
camera->pl->size = 116;
GP_DEBUG ("Retrieved Data");
return GP_OK;
}
/*
* Delete one image
* The image mustn't be protected
*/
static int
delete_file_func (CameraFilesystem *fs, const char *folder,
const char *filename, void *data, GPContext *context)
{
Camera *camera = data;
CameraFileInfo file_info;
unsigned char cmd[7], ack;
int image_no;
int ret;
GP_DEBUG ("*** ENTER: delete_file_func ***");
image_no = gp_filesystem_number(fs, folder, filename, context);
if (image_no < 0) return image_no;
image_no++;
ret = k_info_img (image_no, data, (CameraFileInfo *)&file_info,
&image_no);
if (ret < GP_OK)
return ret;
/* Now, check if the image isn't protected */
if (file_info.file.permissions == GP_FILE_PERM_READ) {
gp_context_error(context, _("Image %s is delete protected."),
filename);
return (GP_ERROR);
}
/* Erase the image */
cmd[0] = ESC;
cmd[1] = ERASEIMAGE_CMD1;
cmd[2] = IMAGE_CMD2;
cmd[3] = 0x30 + ((image_no/1000)%10);
cmd[4] = 0x30 + ((image_no/100 )%10);
cmd[5] = 0x30 + ((image_no/10 )%10);
cmd[6] = 0x30 + ( image_no %10);
ret = gp_port_write (camera->port, (char*)cmd, sizeof(cmd));
if (ret<GP_OK) return ret;
ret = gp_port_read (camera->port, (char*)&ack, ACK_LEN);
if (ret<GP_OK) return ret;
if (ack != ACK) {
gp_context_error(context, _("Can't delete image %s."),filename);
return (GP_ERROR);
}
return (GP_OK);
}
static int poll_and_wait(gp_port *dev, int length, int bob, int eob)
{
unsigned short s, poll, poll_reply;
poll = POLL_POLL | POLL_CMD | (length & POLL_LENGTH_MASK) |
(bob ? POLL_BOB : 0) | (eob ? POLL_EOB : 0);
do {
s = htobe16(poll);
if (gp_port_write(dev, (void *)&s, sizeof(s)) < 0)
return -1;
if (gp_port_read(dev, (void *)&s, sizeof(s)) < 0)
return -1;
poll_reply = be16toh(s);
} while (poll_reply & POLL_NAK);
return 0;
}
static int poll_and_reply(gp_port *dev, int *length, int *eob, int nak)
{
unsigned short s, poll;
if (gp_port_read(dev, (void *)&s, sizeof(s)) < 0)
return -1;
poll = be16toh(s);
if (length)
*length = poll & POLL_LENGTH_MASK;
if (eob)
*eob = poll & POLL_EOB;
s = htobe16(nak ? POLL_NAK : POLL_ACK);
if (gp_port_write(dev, (void *)&s, sizeof(s)) < 0)
return -1;
return 0;
}