static int get_file_func (CameraFilesystem *fs, const char *folder,
const char *filename, CameraFileType type,
CameraFile *file, void *data, GPContext *context)
{
Camera *camera = data;
int file_number=0, result;
file_number = gp_filesystem_number(fs, folder, filename, context);
if (file_number < 0)
return (file_number);
switch (type) {
case GP_FILE_TYPE_NORMAL:
gp_file_set_mime_type (file, GP_MIME_JPEG);
result = dimagev_get_picture (camera->pl, file_number + 1, file);
break;
case GP_FILE_TYPE_PREVIEW:
gp_file_set_mime_type (file, GP_MIME_PPM);
result = dimagev_get_thumbnail (camera->pl, file_number + 1, file);
break;
default:
return (GP_ERROR_NOT_SUPPORTED);
}
if (result < 0) {
GP_DEBUG( "camera_file_get::unable to retrieve image file");
return result;
}
sleep(2);
return GP_OK;
}
static int get_file_func (CameraFilesystem *fs, const char *folder,
const char *filename, CameraFileType type,
CameraFile *file, void *data, GPContext *context)
{
Camera *camera = data;
int file_number=0, result;
char buffer[128];
file_number = gp_filesystem_number(fs, folder, filename, context);
if (file_number < 0)
return (file_number);
switch (type) {
case GP_FILE_TYPE_NORMAL:
gp_file_set_mime_type (file, GP_MIME_JPEG);
gp_file_set_name (file, filename);
result = dimagev_get_picture (camera->pl, file_number + 1, file);
break;
case GP_FILE_TYPE_PREVIEW:
gp_file_set_mime_type (file, GP_MIME_PPM);
#if defined HAVE_SNPRINTF
snprintf(buffer, sizeof(buffer), DIMAGEV_THUMBNAIL_FMT, ( file_number + 1) );
#else
sprintf(buffer, DIMAGEV_THUMBNAIL_FMT, ( file_number + 1) );
#endif
gp_file_set_name (file, buffer);
result = dimagev_get_thumbnail (camera->pl, file_number + 1, file);
break;
default:
return (GP_ERROR_NOT_SUPPORTED);
}
if (result < 0) {
GP_DEBUG( "camera_file_get::unable to retrieve image file");
return result;
}
sleep(2);
return GP_OK;
}
int dimagev_get_thumbnail(dimagev_t *dimagev, int file_number, CameraFile *file) {
dimagev_packet *p, *r;
unsigned char char_buffer, command_buffer[3], *ycrcb_data;
char *data;
long int size = 0;
if ( dimagev->data->host_mode != (unsigned char) 1 ) {
dimagev->data->host_mode = (unsigned char) 1;
if ( dimagev_send_data(dimagev) < GP_OK ) {
GP_DEBUG( "dimagev_get_thumbnail::unable to set host mode");
return GP_ERROR_IO;
}
}
/* First make the command packet. */
command_buffer[0] = 0x0d;
command_buffer[1] = (unsigned char)( file_number / 256 );
command_buffer[2] = (unsigned char)( file_number % 256 );
if ( ( p = dimagev_make_packet(command_buffer, 3, 0) ) == NULL ) {
GP_DEBUG( "dimagev_get_thumbnail::unable to allocate command packet");
return GP_ERROR_NO_MEMORY;
}
if ( gp_port_write(dimagev->dev, (char *)p->buffer, p->length) < GP_OK ) {
GP_DEBUG( "dimagev_get_thumbnail::unable to send set_data packet");
free(p);
return GP_ERROR_IO;
} else if ( gp_port_read(dimagev->dev, (char *)&char_buffer, 1) < GP_OK ) {
GP_DEBUG( "dimagev_get_thumbnail::no response from camera");
free(p);
return GP_ERROR_IO;
}
free(p);
switch ( char_buffer ) {
case DIMAGEV_ACK:
break;
case DIMAGEV_NAK:
GP_DEBUG( "dimagev_get_thumbnail::camera did not acknowledge transmission");
return dimagev_get_thumbnail(dimagev, file_number, file);
/* return GP_ERROR_IO;*/
case DIMAGEV_CAN:
GP_DEBUG( "dimagev_get_thumbnail::camera cancels transmission");
return GP_ERROR_IO;
default:
GP_DEBUG( "dimagev_get_thumbnail::camera responded with unknown value %x", char_buffer);
return GP_ERROR_IO;
}
if ( ( p = dimagev_read_packet(dimagev) ) == NULL ) {
GP_DEBUG( "dimagev_get_thumbnail::unable to read packet");
return GP_ERROR_IO;
}
if ( ( r = dimagev_strip_packet(p) ) == NULL ) {
GP_DEBUG( "dimagev_get_thumbnail::unable to strip packet");
free(p);
return GP_ERROR_NO_MEMORY;
}
free(p);
/* Unlike normal images, we are guaranteed 9600 bytes *exactly*. */
/* Allocate an extra byte just in case. */
if ( ( ycrcb_data = malloc(9600) ) == NULL ) {
GP_DEBUG( "dimagev_get_thumbnail::unable to allocate buffer for file");
free(r);
return GP_ERROR_NO_MEMORY;
}
memcpy(ycrcb_data, r->buffer, (size_t) r->length );
size += r->length - 1 ;
free(r);
while ( size < 9599 ) {
char_buffer=DIMAGEV_ACK;
if ( gp_port_write(dimagev->dev, (char *)&char_buffer, 1) < GP_OK ) {
GP_DEBUG( "dimagev_get_thumbnail::unable to send ACK");
free(ycrcb_data);
return GP_ERROR_IO;
}
if ( ( p = dimagev_read_packet(dimagev) ) == NULL ) {
GP_DEBUG( "dimagev_get_thumbnail::unable to read packet");
free(ycrcb_data);
return GP_ERROR_IO;
}
if ( ( r = dimagev_strip_packet(p) ) == NULL ) {
GP_DEBUG( "dimagev_get_thumbnail::unable to strip packet");
free(p);
free(ycrcb_data);
return GP_ERROR_NO_MEMORY;
}
free(p);
memcpy(&( ycrcb_data[ ( size + 1) ] ), r->buffer, (size_t) r->length );
size += r->length;
free(r);
GP_DEBUG( "dimagev_get_thumbnail::current file size is %ld", size);
}
size++;
char_buffer=DIMAGEV_EOT;
if ( gp_port_write(dimagev->dev, (char *)&char_buffer, 1) < GP_OK ) {
GP_DEBUG( "dimagev_get_thumbnail::unable to send ACK");
free(ycrcb_data);
return GP_ERROR_IO;
}
if ( gp_port_read(dimagev->dev, (char *)&char_buffer, 1) < GP_OK ) {
GP_DEBUG( "dimagev_get_thumbnail::no response from camera");
free(ycrcb_data);
return GP_ERROR_IO;
}
switch ( char_buffer ) {
case DIMAGEV_ACK:
break;
case DIMAGEV_NAK:
GP_DEBUG( "dimagev_get_thumbnail::camera did not acknowledge transmission");
free(ycrcb_data);
return GP_ERROR_IO;
case DIMAGEV_CAN:
GP_DEBUG( "dimagev_get_thumbnail::camera cancels transmission");
free(ycrcb_data);
return GP_ERROR_IO;
default:
GP_DEBUG( "dimagev_get_thumbnail::camera responded with unknown value %x", char_buffer);
free(ycrcb_data);
return GP_ERROR_IO;
}
data = (char *)dimagev_ycbcr_to_ppm(ycrcb_data);
size = 14413;
gp_file_set_data_and_size (file, data, size);
return GP_OK;
}
