uint16_t
ptp_usb_getdata (PTPParams* params, PTPContainer* ptp, PTPDataHandler *handler)
{
uint16_t ret;
PTPUSBBulkContainer usbdata;
unsigned char *data;
unsigned long bytes_to_read, written, curread, oldsize;
Camera *camera = ((PTPData *)params->data)->camera;
int usecontext, progressid = 0, tries = 0, res;
GPContext *context = ((PTPData *)params->data)->context;
gp_log (GP_LOG_DEBUG, "ptp2/ptp_usb_getdata", "reading data");
PTP_CNT_INIT(usbdata);
do {
unsigned long len, rlen;
ret = ptp_usb_getpacket(params, &usbdata, &rlen);
if (ret!=PTP_RC_OK) {
ret = PTP_ERROR_IO;
break;
}
if (dtoh16(usbdata.type)!=PTP_USB_CONTAINER_DATA) {
/* We might have got a response instead. On error for instance. */
if (dtoh16(usbdata.type) == PTP_USB_CONTAINER_RESPONSE) {
params->response_packet = malloc(dtoh32(usbdata.length));
if (!params->response_packet) return PTP_RC_GeneralError;
memcpy(params->response_packet,
(uint8_t *) &usbdata, dtoh32(usbdata.length));
params->response_packet_size = dtoh32(usbdata.length);
ret = PTP_RC_OK;
} else {
ret = PTP_ERROR_DATA_EXPECTED;
}
break;
}
if (dtoh16(usbdata.code)!=ptp->Code) {
/* A creative Zen device breaks down here, by leaving out
* Code and Transaction ID */
if (MTP_ZEN_BROKEN_HEADER(params)) {
gp_log (GP_LOG_DEBUG, "ptp2/ptp_usb_getdata", "Read broken PTP header (Code is %04x vs %04x), compensating.",
dtoh16(usbdata.code), ptp->Code
);
usbdata.code = dtoh16(ptp->Code);
usbdata.trans_id = htod32(ptp->Transaction_ID);
} else {
gp_log (GP_LOG_ERROR, "ptp2/ptp_usb_getdata", "Read broken PTP header (Code is %04x vs %04x).",
dtoh16(usbdata.code), ptp->Code
);
ret = PTP_ERROR_IO;
break;
}
}
if (usbdata.length == 0xffffffffU) {
unsigned char *data = malloc (PTP_USB_BULK_HS_MAX_PACKET_LEN_READ);
if (!data) return PTP_RC_GeneralError;
/* Copy first part of data to 'data' */
handler->putfunc(
params, handler->priv, rlen - PTP_USB_BULK_HDR_LEN, usbdata.payload.data,
&written
);
/* stuff data directly to passed data handler */
while (1) {
unsigned long written;
int result = gp_port_read (camera->port, (char*)data, PTP_USB_BULK_HS_MAX_PACKET_LEN_READ);
if (result < 0) {
free (data);
return PTP_ERROR_IO;
}
handler->putfunc (params, handler->priv, result, data, &written);
if (result < PTP_USB_BULK_HS_MAX_PACKET_LEN_READ)
break;
}
free (data);
return PTP_RC_OK;
}
if (rlen > dtoh32(usbdata.length)) {
/*
* Buffer the surplus response packet if it is >=
* PTP_USB_BULK_HDR_LEN
* (i.e. it is probably an entire package)
* else discard it as erroneous surplus data.
* This will even work if more than 2 packets appear
* in the same transaction, they will just be handled
* iteratively.
*
* Marcus observed stray bytes on iRiver devices;
* these are still discarded.
*/
unsigned int packlen = dtoh32(usbdata.length);
unsigned int surplen = rlen - packlen;
if (surplen >= PTP_USB_BULK_HDR_LEN) {
params->response_packet = malloc(surplen);
if (!params->response_packet) return PTP_RC_GeneralError;
memcpy(params->response_packet,
(uint8_t *) &usbdata + packlen, surplen);
params->response_packet_size = surplen;
} else {
gp_log (GP_LOG_DEBUG, "ptp2/ptp_usb_getdata", "read %ld bytes too much, expect problems!", rlen - dtoh32(usbdata.length));
}
rlen = packlen;
}
/* For most PTP devices rlen is 512 == sizeof(usbdata)
* here. For MTP devices splitting header and data it might
* be 12.
*/
/* Evaluate full data length. */
len=dtoh32(usbdata.length)-PTP_USB_BULK_HDR_LEN;
/* autodetect split header/data MTP devices */
if (dtoh32(usbdata.length) > 12 && (rlen==12))
params->split_header_data = 1;
/* Copy first part of data to 'data' */
handler->putfunc(
params, handler->priv, rlen - PTP_USB_BULK_HDR_LEN, usbdata.payload.data,
&written
);
/* Is that all of data? */
if (len+PTP_USB_BULK_HDR_LEN<=rlen) break;
/* If not read the rest of it. */
retry:
oldsize = 0;
data = malloc(READLEN);
if (!data) return PTP_RC_GeneralError;
bytes_to_read = len - (rlen - PTP_USB_BULK_HDR_LEN);
usecontext = (bytes_to_read > CONTEXT_BLOCK_SIZE);
ret = PTP_RC_OK;
if (usecontext)
progressid = gp_context_progress_start (context, (bytes_to_read/CONTEXT_BLOCK_SIZE), _("Downloading..."));
curread = 0; res = 0;
while (bytes_to_read > 0) {
unsigned long toread = bytes_to_read;
/* read in large blobs.
* if smaller than large blob, read all but the last short packet
* depending on EP packetsize.
*/
if (toread > READLEN)
toread = READLEN;
else if (toread > params->maxpacketsize)
toread = toread - (toread % params->maxpacketsize);
res = gp_port_read (camera->port, (char*)data, toread);
if (res <= 0) {
ret = PTP_ERROR_IO;
break;
}
ret = handler->putfunc (params, handler->priv,
res, data, &written
);
if (ret != PTP_RC_OK)
break;
if (written != res) {
ret = PTP_ERROR_IO;
break;
}
bytes_to_read -= res;
curread += res;
if (usecontext && (oldsize/CONTEXT_BLOCK_SIZE < curread/CONTEXT_BLOCK_SIZE))
gp_context_progress_update (context, progressid, curread/CONTEXT_BLOCK_SIZE);
/* Only cancel transfers larger than 1MB. as
* canceling did not work on eos_get_viewfinder of 200kb */
if ((rlen > 1024*1024) && gp_context_cancel(context) == GP_CONTEXT_FEEDBACK_CANCEL) {
ret = PTP_ERROR_CANCEL;
break;
}
oldsize = curread;
}
free (data);
if (usecontext)
gp_context_progress_stop (context, progressid);
if (res == 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) && (curread == 0))
goto retry;
}
if ((ret!=PTP_RC_OK) && (ret!=PTP_ERROR_CANCEL)) {
ret = PTP_ERROR_IO;
break;
}
} while (0);
if ((ret!=PTP_RC_OK) && (ret!=PTP_ERROR_CANCEL)) {
gp_log (GP_LOG_DEBUG, "ptp2/usb_getdata",
"request code 0x%04x getting data error 0x%04x",
ptp->Code, ret);
}
return ret;
}
int
gp_abilities_list_load_dir (CameraAbilitiesList *list, const char *dir,
GPContext *context)
{
CameraLibraryIdFunc id;
CameraLibraryAbilitiesFunc ab;
CameraText text;
int ret, x, old_count, new_count;
unsigned int i, p;
const char *filename;
CameraList *flist;
int count;
lt_dlhandle lh;
CHECK_NULL (list && dir);
gp_log (GP_LOG_DEBUG, "gphoto2-abilities-list",
"Using ltdl to load camera libraries from '%s'...", dir);
CHECK_RESULT (gp_list_new (&flist));
ret = gp_list_reset (flist);
if (ret < GP_OK) {
gp_list_free (flist);
return ret;
}
if (1) { /* a new block in which we can define a temporary variable */
foreach_data_t foreach_data = { NULL, GP_OK };
foreach_data.list = flist;
lt_dlinit ();
lt_dladdsearchdir (dir);
ret = lt_dlforeachfile (dir, foreach_func, &foreach_data);
lt_dlexit ();
if (ret != 0) {
gp_list_free (flist);
gp_log (GP_LOG_ERROR, "gp-abilities-list",
"Internal error looking for camlibs (%d)", ret);
gp_context_error (context,
_("Internal error looking for camlibs. "
"(path names too long?)"));
return (foreach_data.result!=GP_OK)?foreach_data.result:GP_ERROR;
}
}
count = gp_list_count (flist);
if (count < GP_OK) {
gp_list_free (flist);
return ret;
}
gp_log (GP_LOG_DEBUG, "gp-abilities-list", "Found %i "
"camera drivers.", count);
lt_dlinit ();
p = gp_context_progress_start (context, count,
_("Loading camera drivers from '%s'..."), dir);
for (i = 0; i < count; i++) {
ret = gp_list_get_name (flist, i, &filename);
if (ret < GP_OK) {
gp_list_free (flist);
return ret;
}
lh = lt_dlopenext (filename);
if (!lh) {
gp_log (GP_LOG_DEBUG, "gphoto2-abilities-list",
"Failed to load '%s': %s.", filename,
lt_dlerror ());
continue;
}
/* camera_id */
id = lt_dlsym (lh, "camera_id");
if (!id) {
gp_log (GP_LOG_DEBUG, "gphoto2-abilities-list",
"Library '%s' does not seem to "
"contain a camera_id function: %s",
filename, lt_dlerror ());
lt_dlclose (lh);
continue;
}
/*
* Make sure the camera driver hasn't been
* loaded yet.
*/
if (id (&text) != GP_OK) {
lt_dlclose (lh);
continue;
}
if (gp_abilities_list_lookup_id (list, text.text) >= 0) {
lt_dlclose (lh);
continue;
}
/* camera_abilities */
ab = lt_dlsym (lh, "camera_abilities");
if (!ab) {
gp_log (GP_LOG_DEBUG, "gphoto2-abilities-list",
"Library '%s' does not seem to "
"contain a camera_abilities function: "
"%s", filename, lt_dlerror ());
lt_dlclose (lh);
continue;
}
old_count = gp_abilities_list_count (list);
if (old_count < 0) {
lt_dlclose (lh);
continue;
}
if (ab (list) != GP_OK) {
lt_dlclose (lh);
continue;
}
lt_dlclose (lh);
new_count = gp_abilities_list_count (list);
if (new_count < 0)
continue;
/* Copy in the core-specific information */
for (x = old_count; x < new_count; x++) {
strcpy (list->abilities[x].id, text.text);
strcpy (list->abilities[x].library, filename);
}
gp_context_progress_update (context, p, i);
if (gp_context_cancel (context) == GP_CONTEXT_FEEDBACK_CANCEL) {
lt_dlexit ();
gp_list_free (flist);
return (GP_ERROR_CANCEL);
}
}
gp_context_progress_stop (context, p);
lt_dlexit ();
gp_list_free (flist);
return (GP_OK);
}
uint16_t
ptp_usb_senddata (PTPParams* params, PTPContainer* ptp,
uint64_t size, PTPDataHandler *handler
) {
uint16_t ret = PTP_RC_OK;
int res, wlen, datawlen;
PTPUSBBulkContainer usbdata;
unsigned long bytes_left_to_transfer, written;
Camera *camera = ((PTPData *)params->data)->camera;
unsigned char *bytes;
int progressid = 0;
int usecontext = (size > CONTEXT_BLOCK_SIZE);
GPContext *context = ((PTPData *)params->data)->context;
/* build appropriate USB container */
usbdata.length = htod32(PTP_USB_BULK_HDR_LEN+size);
usbdata.type = htod16(PTP_USB_CONTAINER_DATA);
usbdata.code = htod16(ptp->Code);
usbdata.trans_id= htod32(ptp->Transaction_ID);
if (params->split_header_data) {
datawlen = 0;
wlen = PTP_USB_BULK_HDR_LEN;
} else {
unsigned long gotlen;
/* For all camera devices. */
datawlen = (size<PTP_USB_BULK_PAYLOAD_LEN_WRITE)?size:PTP_USB_BULK_PAYLOAD_LEN_WRITE;
wlen = PTP_USB_BULK_HDR_LEN + datawlen;
ret = handler->getfunc(params, handler->priv, datawlen, usbdata.payload.data, &gotlen);
if (ret != PTP_RC_OK)
return ret;
if (gotlen != datawlen)
return PTP_RC_GeneralError;
}
res = gp_port_write (camera->port, (char*)&usbdata, wlen);
if (res != wlen) {
gp_log (GP_LOG_DEBUG, "ptp2/usb_senddata",
"request code 0x%04x sending data error 0x%04x",
ptp->Code,ret);
return PTP_ERROR_IO;
}
if (size <= datawlen) { /* nothing more to do */
written = wlen;
goto finalize;
}
if (usecontext)
progressid = gp_context_progress_start (context, (size/CONTEXT_BLOCK_SIZE), _("Uploading..."));
bytes = malloc (4096);
if (!bytes)
return PTP_RC_GeneralError;
/* if everything OK send the rest */
bytes_left_to_transfer = size-datawlen;
ret = PTP_RC_OK;
written = 0;
while(bytes_left_to_transfer > 0) {
unsigned long readlen, toread, oldwritten = written;
int res;
toread = 4096;
if (toread > bytes_left_to_transfer)
toread = bytes_left_to_transfer;
ret = handler->getfunc (params, handler->priv, toread, bytes, &readlen);
if (ret != PTP_RC_OK)
break;
res = gp_port_write (camera->port, (char*)bytes, readlen);
if (res < 0) {
ret = PTP_ERROR_IO;
break;
}
bytes_left_to_transfer -= res;
written += res;
if (usecontext && (oldwritten/CONTEXT_BLOCK_SIZE < written/CONTEXT_BLOCK_SIZE))
gp_context_progress_update (context, progressid, written/CONTEXT_BLOCK_SIZE);
#if 0 /* Does not work this way... Hmm. */
if (gp_context_cancel(context) == GP_CONTEXT_FEEDBACK_CANCEL) {
ret = ptp_usb_control_cancel_request (params,ptp->Transaction_ID);
if (ret == PTP_RC_OK)
ret = PTP_ERROR_CANCEL;
break;
}
#endif
}
if (usecontext)
gp_context_progress_stop (context, progressid);
free (bytes);
finalize:
if ((ret == PTP_RC_OK) && ((written % params->maxpacketsize) == 0))
gp_port_write (camera->port, "x", 0);
if ((ret!=PTP_RC_OK) && (ret!=PTP_ERROR_CANCEL))
ret = PTP_ERROR_IO;
return ret;
}
static int get_file_func (CameraFilesystem *fs, const char *folder,
const char *filename, CameraFileType type,
CameraFile *file, void *user_data, GPContext *context)
{
Camera *camera = user_data;
char *raw, *ppm;
unsigned char gtable[256];
char *ptr;
int size = 0, n = 0;
int width, height;
struct jamcam_file *jc_file;
GP_DEBUG ("* camera_file_get");
GP_DEBUG ("*** folder: %s", folder);
GP_DEBUG ("*** filename: %s",filename);
GP_DEBUG ("*** type: %d", type);
CHECK (n = gp_filesystem_number (camera->fs, folder,
filename, context));
if (gp_context_cancel (context) == GP_CONTEXT_FEEDBACK_CANCEL)
return (GP_ERROR_CANCEL);
raw = malloc(640*480 * 3);
ppm = malloc(640*480 * 3 + 200);
switch (type) {
case GP_FILE_TYPE_PREVIEW:
CHECK_free (jamcam_request_thumbnail (camera, file, raw, &size, n, context));
width = 80;
height = 60;
sprintf( ppm,
"P6\n"
"# CREATOR: gphoto2, jamcam library\n"
"%d %d\n"
"255\n", width, height );
ptr = ppm + strlen( ppm );
size = strlen( ppm ) + ( height * width * 3 );
gp_bayer_decode(raw, width, height, ptr, BAYER_TILE_GBRG );
gp_gamma_fill_table( gtable, 0.5 );
gp_gamma_correct_single( gtable, ptr, height * width );
CHECK_free (gp_file_set_mime_type (file, GP_MIME_PPM));
CHECK_free (gp_file_append (file, ppm, size));
break;
case GP_FILE_TYPE_NORMAL:
CHECK_free (jamcam_request_image (camera, file, raw, &size, n, context));
jc_file = jamcam_file_info (camera, n);
sprintf( ppm,
"P6\n"
"# CREATOR: gphoto2, jamcam library\n"
"%d %d\n"
"255\n", jc_file->width, jc_file->height );
ptr = ppm + strlen( ppm );
size = strlen( ppm ) + ( jc_file->width * jc_file->height * 3 );
gp_bayer_decode( raw, jc_file->width, jc_file->height, ptr,
BAYER_TILE_GBRG );
gp_gamma_fill_table( gtable, 0.5 );
gp_gamma_correct_single( gtable, ptr, jc_file->width * jc_file->height );
CHECK_free (gp_file_set_mime_type (file, GP_MIME_PPM));
CHECK_free (gp_file_append (file, ppm, size));
break;
case GP_FILE_TYPE_RAW:
CHECK_free (jamcam_request_image (camera, file, raw, &size, n, context));
CHECK_free (gp_file_set_mime_type (file, GP_MIME_RAW));
CHECK_free (gp_file_append (file, raw, size));
break;
default:
free(raw); free(ppm);
return (GP_ERROR_NOT_SUPPORTED);
}
free(raw); free(ppm);
return (GP_OK);
}
/* Download a raw Bayer image from the camera and return it in a malloced
buffer */
static uint8_t *
Dimera_Get_Full_Image (int picnum, long *size, int *width, int *height,
Camera *camera, GPContext *context)
{
static struct mesa_image_arg ia;
int32_t r;
uint8_t *b, *rbuffer = NULL;
int hires, s, retry;
unsigned int id;
*size = 0;
*width = 0;
*height = 0;
if ( picnum != RAM_IMAGE_NUM )
{
GP_DEBUG("Getting Image Info");
if ( (r = mesa_read_image_info( camera->port, picnum, NULL )) < 0 )
{
ERROR("Can't get Image Info");
gp_context_error (context, _("Problem getting image information"));
return NULL;
}
if ( r )
{
hires = FALSE;
*height = 240;
*width = 320;
} else {
hires = TRUE;
*height = 480;
*width = 640;
}
GP_DEBUG("Loading Image");
if ( mesa_load_image( camera->port, picnum ) != GP_OK )
{
ERROR("Image Load failed");
gp_context_error (context, _("Problem reading image from flash"));
return NULL;
}
} else {
/* load the snapped image */
hires = TRUE;
*height = 480;
*width = 640;
}
*size = *height * *width; /* 8 bits per pixel in raw CCD format */
GP_DEBUG("Downloading Image");
rbuffer = (uint8_t *)malloc( *size );
if ( rbuffer == NULL )
{
gp_context_error (context, _("Out of memory"));
return NULL;
}
ia.start = 28;
ia.send = 4;
ia.skip = 0;
ia.repeat = ( hires ? 160 : 80 );
ia.row_cnt = 40;
ia.inc1 = 1;
ia.inc2 = 128;
ia.inc3 = ia.inc4 = 0;
/* due to reports of mesa_read_image not working for some cameras */
/* this is changed to use mesa_read_row */
#if 0
id = gp_context_progress_start (context, *height + 4,
_("Downloading image..."));
for ( ia.row = 4, b = rbuffer; ia.row < (height + 4) ;
ia.row += ia.row_cnt, b += s )
{
GP_DEBUG("Downloading Image");
for ( retry = 10;; )
{
s = mesa_read_image( camera->port, b, &ia );
if( s > 0)
break;
if ( (s == GP_ERROR_TIMEOUT || s == GP_ERROR_CORRUPTED_DATA) && --retry > 0)
{
GP_DEBUG( "Dimera_Get_Full_Image: retrans");
continue;
}
GP_DEBUG(
"Dimera_Get_Full_Image: read error %d (retry %d)",s,retry);
/* retry count exceeded, or other error */
free( rbuffer );
*size = 0;
gp_context_error (context, _("Problem downloading image"));
return NULL;
}
gp_context_progress_update (context, id, ia.row);
if (gp_context_cancel (context) == GP_CONTEXT_FEEDBACK_CANCEL)
{
free( rbuffer );
*size = 0;
gp_context_error (context, _("User canceled download"));
return NULL;
}
}
#else
id = gp_context_progress_start (context, *height + 4,
_("Downloading image..."));
for ( ia.row = 4, b = rbuffer; ia.row < (*height + 4) ;
ia.row++, b += s )
{
GP_DEBUG("Downloading Image");
for ( retry = 10;; )
{
s = mesa_read_row( camera->port, b, &ia );
if( s > 0)
break;
if ( (s == GP_ERROR_TIMEOUT || s == GP_ERROR_CORRUPTED_DATA) && --retry > 0)
{
GP_DEBUG("Dimera_Get_Full_Image: retrans");
continue;
}
GP_DEBUG(
"Dimera_Get_Full_Image: read error %d (retry %d)",s,retry);
/* retry count exceeded, or other error */
free( rbuffer );
*size = 0;
gp_context_error (context, _("Problem downloading image"));
return NULL;
}
gp_context_progress_update (context, id, ia.row);
if (gp_context_cancel (context) == GP_CONTEXT_FEEDBACK_CANCEL)
{
free( rbuffer );
*size = 0;
return NULL;
}
}
gp_context_progress_stop (context, id);
#endif
return (rbuffer);
}
static int
get_file_func (CameraFilesystem *fs, const char *folder, const char *filename,
CameraFileType type, CameraFile *file, void *user_data,
GPContext *context)
{
char path[1024];
int result = GP_OK;
struct stat stbuf;
int fd, id;
unsigned int curread, toread;
unsigned char *buf;
#ifdef HAVE_LIBEXIF
ExifData *data;
unsigned int buf_len;
#endif /* HAVE_LIBEXIF */
Camera *camera = (Camera*)user_data;
result = _get_path (camera->port, folder, filename, path, sizeof(path));
gp_log (GP_LOG_DEBUG, "directory/get_file_func", "%s %s",folder,filename);
if (result < GP_OK)
return result;
gp_log (GP_LOG_DEBUG, "directory/get_file_func", "->%s",path);
switch (type) {
case GP_FILE_TYPE_NORMAL:
#ifdef DEBUG
case GP_FILE_TYPE_PREVIEW:
#endif
fd = open (path,O_RDONLY);
if (fd == -1)
return GP_ERROR_IO_READ;
break;
#ifdef HAVE_LIBEXIF
case GP_FILE_TYPE_EXIF:
data = exif_data_new_from_file (path);
if (!data) {
gp_context_error (context, _("Could not open '%s'."),
path);
return (GP_ERROR);
}
exif_data_save_data (data, &buf, &buf_len);
exif_data_unref (data);
gp_file_set_data_and_size (file, buf, buf_len);
return (GP_OK);
#endif /* HAVE_LIBEXIF */
default:
return (GP_ERROR_NOT_SUPPORTED);
}
if (-1 == fstat(fd,&stbuf)) {
close (fd);
return GP_ERROR_IO_READ;
}
#define BLOCKSIZE 65536
/* do it in 64kb blocks */
buf = malloc(BLOCKSIZE);
if (!buf) {
close (fd);
return GP_ERROR_NO_MEMORY;
}
curread = 0;
id = gp_context_progress_start (context, (1.0*stbuf.st_size/BLOCKSIZE), _("Getting file..."));
GP_DEBUG ("Progress id: %i", id);
result = GP_OK;
while (curread < stbuf.st_size) {
int ret;
toread = stbuf.st_size-curread;
if (toread>BLOCKSIZE) toread = BLOCKSIZE;
ret = read(fd,buf,toread);
if (ret == -1) {
result = GP_ERROR_IO_READ;
break;
}
curread += ret;
gp_file_append (file, buf, ret);
gp_context_progress_update (context, id, (1.0*curread/BLOCKSIZE));
gp_context_idle (context);
if (gp_context_cancel (context) == GP_CONTEXT_FEEDBACK_CANCEL) {
result = GP_ERROR_CANCEL;
break;
}
#if 0
/* We could take 2 seconds to download this image. everytime. */
/* But actually this driver is used in production by some frontends,
* so do not delay at all
*/
usleep(2000000/(stbuf.st_size/BLOCKSIZE));
#endif
}
gp_context_progress_stop (context, id);
free (buf);
close (fd);
return (GP_OK);
}
static int
get_file_func (CameraFilesystem *fs, const char *folder, const char *filename,
CameraFileType type, CameraFile *file, void *user_data,
GPContext *context)
{
Camera *camera = user_data;
int result;
int havefirst = 0;
unsigned char buffer[SDSC_BLOCKSIZE], first[SDSC_BLOCKSIZE];
long int size, curread;
unsigned int pid;
if (type != GP_FILE_TYPE_NORMAL)
return (GP_ERROR_NOT_SUPPORTED);
/* Seek the header of our file */
while (1) {
CHECK_RESULT (SDSC_send (camera->port, SDSC_NEXT));
CHECK_RESULT (SDSC_send (camera->port, SDSC_START));
CHECK_RESULT (SDSC_receive (camera->port, buffer, SDSC_INFOSIZE));
if (!strcmp(buffer,filename))
break;
if (is_null(buffer)) { /* skipped to the end of the camera? */
/* Since we start at a random position, we wrap around. */
continue;
}
/* We are at the first item again, so break. */
if (havefirst && !strcmp(first,buffer))
return GP_ERROR_BAD_PARAMETERS;
if (!havefirst) {
havefirst = 1;
strcpy(first,buffer);
}
}
/* The buffer header has
* filename (8.3 DOS format and \0)
* filesize (as ascii number) and \0
*/
/* Extract the size of the file */
sscanf(buffer+12,"%ld",&size);
/* Put the camera into image mode */
CHECK_RESULT (SDSC_send (camera->port, SDSC_BINARY));
CHECK_RESULT (SDSC_send (camera->port, SDSC_START));
pid = gp_context_progress_start(context,size,_("Downloading image..."));
curread = 0;
/* Read data */
while (1) {
/* Read data and check for EOF */
result = SDSC_receive (camera->port, buffer, SDSC_BLOCKSIZE);
if (result == SDSC_ERROR_EOF)
break;
if (result < 0)
return result;
gp_file_append(file,buffer,SDSC_BLOCKSIZE);
curread += SDSC_BLOCKSIZE;
gp_context_progress_update(context, pid, curread);
if (gp_context_cancel(context) == GP_CONTEXT_FEEDBACK_CANCEL)
return GP_ERROR_CANCEL;
CHECK_RESULT (SDSC_send (camera->port, SDSC_BINARY));
}
gp_context_progress_stop(context, pid);
CHECK_RESULT (gp_file_set_mime_type (file, GP_MIME_JPEG));
return (GP_OK);
}
/* This function reads all thumbnails at once and initializes the whole
* camera filesystem. This can be done, because finding out how much
* pictures are on the camera is done by reading the whole preview picture
* stream anyway.
* And since the file infos are static mostly, why not just set them too at
* the same time.
*/
int
jd11_index_reader(GPPort *port, CameraFilesystem *fs, GPContext *context) {
int i, id, count, xsize, curread=0, ret=0;
unsigned char *indexbuf;
ret = jd11_select_index(port);
if (ret != GP_OK)
return ret;
xsize = jd11_imgsize(port);
if (!xsize) { /* shortcut, no reading needed */
return GP_OK;
}
count = xsize/(64*48);
xsize = count * (64*48);
indexbuf = malloc(xsize);
if (!indexbuf) return GP_ERROR_NO_MEMORY;
id = gp_context_progress_start (context, xsize,
_("Downloading thumbnail..."));
_send_cmd(port,0xfff1);
while (curread < xsize) {
int readsize = xsize-curread;
if (readsize>200) readsize = 200;
ret=getpacket(port,indexbuf+curread,readsize);
if (ret==0)
break;
curread+=ret;
if (ret<200)
break;
gp_context_progress_update (context, id, curread);
if (gp_context_cancel (context) == GP_CONTEXT_FEEDBACK_CANCEL) {
/* What to do...Just free the stuff we allocated for now.*/
free(indexbuf);
return GP_ERROR_CANCEL;
}
_send_cmd(port,0xfff1);
}
gp_context_progress_stop (context, id);
for (i=0;i<count;i++) {
CameraFile *file;
char fn[20];
unsigned char *src;
unsigned char thumb[64*48];
int y;
CameraFileInfo info;
ret = gp_file_new(&file);
if (ret!=GP_OK) {
free(indexbuf);
return ret;
}
sprintf(fn,"image%02i.pgm",i);
gp_file_set_mime_type(file, GP_MIME_PGM);
gp_file_append(file, THUMBHEADER, strlen(THUMBHEADER));
src = indexbuf+(i*64*48);
for (y=0;y<48;y++) {
int x,off = 64*y;
for (x=0;x<64;x++)
thumb[47*64-off+(63-x)] = src[off+x];
}
ret = gp_file_append(file,(char*)thumb,sizeof(thumb));
if (ret != GP_OK) {
gp_file_free (file);
return ret;
}
ret = gp_filesystem_append(fs, "/", fn, context);
if (ret != GP_OK) {
/* should perhaps remove the entry again */
gp_file_free (file);
return ret;
}
ret = gp_filesystem_set_file_noop(fs, "/", fn, GP_FILE_TYPE_PREVIEW, file, context);
if (ret != GP_OK) return ret;
/* we also get the fs info for free, so just set it */
info.file.fields = GP_FILE_INFO_TYPE |
GP_FILE_INFO_WIDTH | GP_FILE_INFO_HEIGHT |
GP_FILE_INFO_SIZE;
strcpy(info.file.type,GP_MIME_PNM);
info.file.width = 640;
info.file.height = 480;
info.file.size = 640*480*3+strlen(IMGHEADER);
info.preview.fields = GP_FILE_INFO_TYPE |
GP_FILE_INFO_WIDTH | GP_FILE_INFO_HEIGHT |
GP_FILE_INFO_SIZE;
strcpy(info.preview.type,GP_MIME_PGM);
info.preview.width = 64;
info.preview.height = 48;
info.preview.size = 64*48+strlen(THUMBHEADER);
ret = gp_filesystem_set_info_noop(fs, "/", fn, info, context);
}
free(indexbuf);
return GP_OK;
}
static int
folder_list_func (CameraFilesystem *fs, const char *folder, CameraList *list,
void *data, GPContext *context)
{
gp_system_dir dir;
gp_system_dirent de;
char buf[1024], f[1024];
unsigned int id, n;
struct stat st;
Camera *camera = (Camera*)data;
if (camera->port->type == GP_PORT_DISK) {
char *path;
GPPortInfo info;
int ret;
ret = gp_port_get_info (camera->port, &info);
if (ret < GP_OK)
return ret;
path = strchr (info.path,':');
if (!path) path = info.path; else path++;
snprintf (f, sizeof(f), "%s/%s/", path, folder);
gp_log (GP_LOG_DEBUG, "directory/folder_list_func", "%s", f);
/* UNIX / is empty, or we recurse through the whole fs */
if ( (!strcmp(path, "") || !strcmp(path, "/")) &&
!strcmp(folder,"/")
)
return GP_OK;
} else {
/* old style access */
/* Make sure we have 1 delimiter */
if (folder[strlen(folder)-1] != '/') {
snprintf (f, sizeof(f), "%s%c", folder, '/');
} else {
strncpy (f, folder, sizeof(f));
}
}
dir = gp_system_opendir ((char*) f);
if (!dir)
return GP_ERROR;
/* Count the files */
n = 0;
while (gp_system_readdir (dir))
n++;
gp_system_closedir (dir);
dir = gp_system_opendir (f);
if (!dir)
return GP_ERROR;
id = gp_context_progress_start (context, n, _("Listing folders in '%s'..."), folder);
n = 0;
while ((de = gp_system_readdir (dir))) {
const char * filename = NULL;
/* Give some feedback */
gp_context_progress_update (context, id, n + 1);
gp_context_idle (context);
if (gp_context_cancel (context) == GP_CONTEXT_FEEDBACK_CANCEL) {
gp_system_closedir (dir);
return GP_ERROR_CANCEL;
}
filename = gp_system_filename (de);
if (*filename != '.') {
snprintf (buf, sizeof(buf), "%s%s", f, filename);
/* lstat ... do not follow symlinks */
if (lstat (buf, &st) != 0) {
gp_context_error (context, _("Could not get information about '%s' (%m)."), buf);
return GP_ERROR;
}
if (S_ISDIR (st.st_mode)) {
gp_list_append(list, filename, NULL);
}
}
n++;
}
gp_system_closedir (dir);
gp_context_progress_stop (context, id);
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 index;
int size;
int i;
int s;
char buffer[112];
int bufIndex;
unsigned int id;
GP_DEBUG ("Get File %s", filename);
/* index is the 0-based image number on the camera */
index = gp_filesystem_number (camera->fs, folder, filename, context);
if (index < 0)
return (index);
switch (type) {
case GP_FILE_TYPE_NORMAL:
size = l859_selectimage(camera, index);
break;
case GP_FILE_TYPE_PREVIEW:
size = l859_selectimage_preview(camera, index);
default:
return (GP_ERROR_NOT_SUPPORTED);
}
if (size < 0)
return (size);
id = gp_context_progress_start (context, size,
_("Downloading '%s'..."), filename);
for (i = 0, s = 0; s < size; i++) {
if (l859_sendcmd(camera, L859_CMD_ACK) != GP_OK)
return GP_ERROR;
if (l859_retrcmd(camera) == GP_ERROR)
return GP_ERROR;
for (bufIndex = 3; bufIndex < 115 && s < size; bufIndex++) {
buffer[bufIndex - 3] = camera->pl->buf[bufIndex];
s += 1;
}
GP_DEBUG ("Packet Size: %i Data Size: %i", bufIndex - 3, s);
/* Append data to the file */
gp_file_append (file, buffer, bufIndex - 3);
/* Check for cancellation */
gp_context_progress_update (context, id, s);
if (gp_context_cancel (context) == GP_CONTEXT_FEEDBACK_CANCEL) {
l859_disconnect (camera);
l859_connect (camera);
return (GP_ERROR_CANCEL);
}
}
gp_file_set_mime_type (file, GP_MIME_JPEG);
GP_DEBUG ("Camera Get File Done");
return (GP_OK);
}
static int
file_list_func (CameraFilesystem *fs, const char *folder,
CameraList *list, void *data, GPContext *context)
{
Camera *camera = data;
unsigned int i, id, size, type;
int filecount;
CameraFile *file;
CameraFileInfo info;
unsigned char *buffer = NULL;
int ret, n_img=0, n_avi=0, n_wav=0;
char fn[100];
CHECK (pccam300_get_filecount (camera->port, &filecount));
id = gp_context_progress_start (context, filecount,
_("Getting file list..."));
for (i = 0; i < filecount; i++) {
/* Get information */
gp_file_new (&file);
ret = pccam300_get_file (camera->port, context, i,
&buffer, &size, &type);
if (ret < GP_OK) {
gp_file_free (file);
return ret;
}
info.audio.fields = GP_FILE_INFO_NONE;
info.preview.fields = GP_FILE_INFO_NONE;
info.file.fields = GP_FILE_INFO_SIZE | GP_FILE_INFO_TYPE;
info.file.size = size;
switch (type) {
case PCCAM300_MIME_JPEG:
strcpy (info.file.type, GP_MIME_JPEG);
sprintf (fn, "Image%03i.jpeg", n_img++);
break;
case PCCAM300_MIME_AVI:
strcpy (info.file.type, GP_MIME_AVI);
sprintf (fn, "Movie%03i.UNUSABLE", n_avi++);
break;
case PCCAM300_MIME_WAV:
strcpy (info.file.type, GP_MIME_WAV);
sprintf (fn, "Audio%03i.UNUSABLE", n_wav++);
break;
default:
break;
}
if (file)
gp_file_set_data_and_size (file, (char *)buffer, size);
else
free (buffer);
/*
* Append directly to the filesystem instead of to the list,
* because we have additional information.
* */
gp_filesystem_append (camera->fs, folder, fn, context);
gp_filesystem_set_info_noop (camera->fs, folder, fn, info, context);
gp_filesystem_set_file_noop (camera->fs, folder, fn, GP_FILE_TYPE_NORMAL,
file, context);
gp_file_unref (file);
gp_context_idle (context);
gp_context_progress_update (context, id, i + 1);
if (gp_context_cancel(context) == GP_CONTEXT_FEEDBACK_CANCEL)
return (GP_ERROR_CANCEL);
}
gp_context_progress_stop (context, id);
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 result = GP_ERROR_IO;
enum {
START,
DATA,
ABORT
} state;
int r, pid = 0, update = 0;
uint64_t byteCount = 0;
struct utimbuf mod_utime_buf = { 0, 0 };
char *path;
struct tf_packet reply;
if (type != GP_FILE_TYPE_NORMAL)
return GP_ERROR_NOT_SUPPORTED;
do_cmd_turbo (camera, "ON", context);
path = get_path(camera, folder, filename);
r = send_cmd_hdd_file_send(camera, GET, path, context);
free (path);
if(r < 0)
goto out;
state = START;
while(0 < (r = get_tf_packet(camera, &reply, context)))
{
update = (update + 1) % 4;
switch (get_u32(&reply.cmd)) {
case DATA_HDD_FILE_START:
if(state == START) {
struct typefile *tf = (struct typefile *) reply.data;
byteCount = get_u64(&tf->size);
pid = gp_context_progress_start (context, byteCount, _("Downloading %s..."), filename);
mod_utime_buf.actime = mod_utime_buf.modtime =
tfdt_to_time(&tf->stamp);
send_success(camera,context);
state = DATA;
} else {
gp_log (GP_LOG_ERROR, "topfield", "ERROR: Unexpected DATA_HDD_FILE_START packet in state %d\n", state);
send_cancel(camera,context);
state = ABORT;
}
break;
case DATA_HDD_FILE_DATA:
if(state == DATA) {
uint64_t offset = get_u64(reply.data);
uint16_t dataLen = get_u16(&reply.length) - (PACKET_HEAD_SIZE + 8);
int w;
if (!update) { /* avoid doing it too often */
gp_context_progress_update (context, pid, offset + dataLen);
if (gp_context_cancel (context) == GP_CONTEXT_FEEDBACK_CANCEL) {
send_cancel(camera,context);
state = ABORT;
}
}
if(r < get_u16(&reply.length)) {
gp_log (GP_LOG_ERROR, "topfield", "ERROR: Short packet %d instead of %d\n", r, get_u16(&reply.length));
/* TODO: Fetch the rest of the packet */
}
w = gp_file_append (file, (char*)&reply.data[8], dataLen);
if(w < GP_OK) {
/* Can't write data - abort transfer */
gp_log (GP_LOG_ERROR, "topfield", "ERROR: Can not write data: %d\n", w);
send_cancel(camera,context);
state = ABORT;
}
} else {
gp_log (GP_LOG_ERROR, "topfield", "ERROR: Unexpected DATA_HDD_FILE_DATA packet in state %d\n", state);
send_cancel(camera,context);
state = ABORT;
}
break;
case DATA_HDD_FILE_END:
send_success(camera,context);
result = GP_OK;
goto out;
break;
case FAIL:
gp_log (GP_LOG_ERROR, "topfield", "ERROR: Device reports %s\n", decode_error(&reply));
send_cancel(camera,context);
state = ABORT;
break;
case SUCCESS:
goto out;
break;
default:
gp_log (GP_LOG_ERROR, "topfield", "ERROR: Unhandled packet (cmd 0x%x)\n", get_u32(&reply.cmd));
break;
}
}
if (pid) gp_context_progress_stop (context, pid);
out:
do_cmd_turbo (camera, "OFF", context);
return result;
}
static int
l_receive (GPPort *p, GPContext *context,
unsigned char **rb, unsigned int *rbs,
unsigned int timeout)
{
unsigned char c, d, progress = 0;
int error_flag;
unsigned int i, j, rbs_internal, id = 0;
unsigned char checksum;
int result;
KCommand command;
CHECK_NULL (p && rb && rbs);
for (i = 0; ; ) {
CHECK (gp_port_set_timeout (p, timeout));
CHECK (gp_port_read (p, (char *)&c, 1));
CHECK (gp_port_set_timeout (p, DEFAULT_TIMEOUT));
switch (c) {
case ENQ:
/* ENQ received. We can proceed. */
break;
case ACK:
/* ACK received. We'll try again at most ten times. */
if (i == 9) {
/*
* The camera hangs! Although it could be
* that the camera accepts one of the
* commands
* - KONICA_CANCEL,
* - KONICA_GET_IO_CAPABILITY, and
* - KONICA_SET_IO_CAPABILITY,
* we can not get the camera back to working
* correctly.
*/
return (GP_ERROR_CORRUPTED_DATA);
}
i++;
break;
default:
/*
* We'll dump this data until we get ENQ (then, we'll
* proceed) or nothing any more (then, we'll report
* error).
*/
for (;;) {
CHECK (gp_port_read (p, (char *)&c, 1));
if (c == ENQ)
break;
}
break;
}
if (c == ENQ)
break;
}
/* Start progress */
if (*rbs > 1000) {
id = gp_context_progress_start (context, *rbs,
_("Downloading..."));
progress = 1;
}
/* Write ACK. */
CHECK (gp_port_write (p, "\6", 1));
for (*rbs = 0; ; ) {
for (j = 0; ; j++) {
CHECK (gp_port_read (p, (char *)&c, 1));
switch (c) {
case STX:
/* STX received. We can proceed. */
break;
default:
/* We'll dump this data and try again. */
continue;
}
/*
* Read 2 bytes for size (low order byte, high order
* byte) plus ESC quotes.
*/
CHECK (l_esc_read (p, &c));
checksum = c;
CHECK (l_esc_read (p, &d));
checksum += d;
rbs_internal = (d << 8) | c;
if (*rbs == 0)
*rb = malloc (rbs_internal * sizeof (char));
else
*rb = realloc (*rb,
sizeof (char) * (*rbs + rbs_internal));
/* Read 'rbs_internal' bytes data plus ESC quotes. */
error_flag = 0;
{
unsigned int read = 0, r = 0;
while (read < rbs_internal) {
/*
* Read the specified amount of bytes. We will probably read more
* because some bytes will be quoted.
*/
GP_DEBUG ("Reading %i bytes (%i of %i already read)...",
rbs_internal - read, read, rbs_internal);
result = gp_port_read (p, (char *)&((*rb)[*rbs + read]),
rbs_internal - read);
if (result < 0) {
error_flag = 1;
break;
}
r = rbs_internal - read;
/* Unescape the data we just read */
for (i = read; i < read + r; i++) {
unsigned char *c = &(*rb)[*rbs + i];
/* The HP PhotoSmart does not escape every special code, only
* some and it gets confused if we do this checks. By relaxing
* these, it now downloads images etc.
*/
#ifndef LESSER_ESCAPES
if ((*c == STX) || (*c == ETX) || (*c == ENQ ) ||
(*c == ACK) || (*c == XOFF) || (*c == XON) ||
(*c == NACK) || (*c == ETB)) {
#else /* LESSER_ESCAPES */
if ((*c == STX) || (*c == XOFF) || (*c == XON)) {
#endif /* LESSER_ESCAPES */
GP_DEBUG ("Wrong ESC masking!");
error_flag = 1;
break;
} else if (*c == ESC) {
if (i == read + r - 1) {
/* ESC is last char of packet */
CHECK (gp_port_read (p, (char *)c, 1));
} else {
memmove (c, c + 1, read + r - i - 1);
r--;
}
*c = ~*c & 0xff;
if ((*c != STX ) && (*c != ETX ) && (*c != ENQ) &&
(*c != ACK ) && (*c != XOFF) && (*c != XON) &&
(*c != NACK) && (*c != ETB ) && (*c != ESC)) {
GP_DEBUG ("Wrong ESC masking!");
error_flag = 1;
break;
}
}
checksum += (*rb)[*rbs + i];
}
if (error_flag)
break;
read += r;
}}
if (!error_flag) {
CHECK (gp_port_read (p, (char *)&d, 1));
switch (d) {
case ETX:
/*
* ETX received. This is the last
* packet.
*/
GP_DEBUG ("Last packet.");
break;
case ETB:
/*
* ETB received. There are more
* packets to come.
*/
GP_DEBUG ("More packets coming.");
break;
default:
/*
* We get more bytes than expected.
* Nothing serious, as we will simply
* dump all bytes until we receive
* ETX or ETB. Later, we'll read the
* checksum with ESC quotes and
* reject the packet.
*/
while ((d != ETX) && (d != ETB)) {
CHECK (gp_port_read (p,
(char *)&d, 1));
}
error_flag = 1;
break;
}
}
checksum += d;
/* Read 1 byte for checksum plus ESC quotes. */
CHECK (l_esc_read (p, &c));
if ((c == checksum) && (!error_flag)) {
*rbs += rbs_internal;
/* Write ACK. */
CHECK (gp_port_write (p, "\6", 1));
break;
} else {
/*
* Checksum wrong or transmission error. The
* camera will send us the data at the most
* three times.
*/
GP_DEBUG ("Checksum wrong: expected %i, "
"got %i.", c, checksum);
if (j == 2)
return (GP_ERROR_CORRUPTED_DATA);
/* Write NACK. */
c = NACK;
CHECK (gp_port_write (p, (char *)&c, 1));
continue;
}
}
CHECK (gp_port_read (p, (char *)&c, 1));
switch (c) {
case EOT:
/* EOT received. We can proceed. */
break;
default:
/* Should not happen. */
return (GP_ERROR_CORRUPTED_DATA);
}
/*
* Depending on d, we will either continue to receive data or
* stop.
*
* - ETX: We are all done.
* - ETB: We expect more data.
* - else: Should not happen.
*/
switch (d) {
case ETX:
/* We are all done. */
if (progress)
gp_context_progress_stop (context, id);
return (GP_OK);
case ETB:
/* We expect more data. Read ENQ. */
CHECK (gp_port_read (p, (char *)&c, 1));
switch (c) {
case ENQ:
/* ENQ received. We can proceed. */
break;
default:
/* Should not happen. */
return (GP_ERROR_CORRUPTED_DATA);
}
if (gp_context_cancel (context) ==
GP_CONTEXT_FEEDBACK_CANCEL) {
GP_DEBUG ("Trying to cancel operation...");
CHECK (k_cancel (p, context, &command));
GP_DEBUG ("Operation 0x%x cancelled.",
command);
return (GP_ERROR_CANCEL);
}
/* Write ACK. */
CHECK (gp_port_write (p, "\6", 1));
break;
default:
/* Should not happen. */
return (GP_ERROR_CORRUPTED_DATA);
}
if (progress)
gp_context_progress_update (context, id, *rbs);
}
}
int
l_send_receive (
GPPort *p, GPContext *c,
unsigned char *send_buffer, unsigned int send_buffer_size,
unsigned char **receive_buffer, unsigned int *receive_buffer_size,
unsigned int timeout,
unsigned char **image_buffer, unsigned int *image_buffer_size)
{
if (!timeout)
timeout = DEFAULT_TIMEOUT;
/* Send data. */
CHECK (l_send (p, c, send_buffer, send_buffer_size));
/* Receive data. */
if (image_buffer_size)
*receive_buffer_size = *image_buffer_size;
CHECK (l_receive (p, c, receive_buffer, receive_buffer_size,
timeout));
/* Check if we've received the control data. */
if ((*receive_buffer_size > 1) &&
(((*receive_buffer)[0] == send_buffer[0]) &&
((*receive_buffer)[1] == send_buffer[1])))
return (GP_OK);
/* We didn't receive control data yet. */
*image_buffer = *receive_buffer;
*image_buffer_size = *receive_buffer_size;
*receive_buffer = NULL;
/* Receive control data. */
CHECK (l_receive (p, c, receive_buffer, receive_buffer_size,
DEFAULT_TIMEOUT));
/* Sanity check: Did we receive the right control data? */
if (((*receive_buffer)[0] != send_buffer[0]) ||
((*receive_buffer)[1] != send_buffer[1]))
return (GP_ERROR_CORRUPTED_DATA);
return (GP_OK);
}
uint16_t
ptp_usb_getdata (PTPParams* params, PTPContainer* ptp, PTPDataHandler *handler)
{
uint16_t ret;
PTPUSBBulkContainer usbdata;
unsigned char *data = NULL;
uint32_t bytes_to_read, bytes_read;
Camera *camera = ((PTPData *)params->data)->camera;
int report_progress, progress_id = 0, do_retry = TRUE, res = GP_OK;
GPContext *context = ((PTPData *)params->data)->context;
GP_LOG_D ("Reading PTP_OC 0x%0x (%s) data...", ptp->Code, ptp_get_opcode_name(params, ptp->Code));
PTP_CNT_INIT(usbdata);
ret = ptp_usb_getpacket (params, &usbdata, &bytes_read);
if (ret != PTP_RC_OK)
goto exit;
if (dtoh16(usbdata.type) != PTP_USB_CONTAINER_DATA) {
/* We might have got a response instead. On error for instance. */
/* TODO: check if bytes_read == usbdata.length */
if (dtoh16(usbdata.type) == PTP_USB_CONTAINER_RESPONSE) {
params->response_packet = malloc(dtoh32(usbdata.length));
if (!params->response_packet) return PTP_RC_GeneralError;
memcpy(params->response_packet, (uint8_t *) &usbdata, dtoh32(usbdata.length));
params->response_packet_size = dtoh32(usbdata.length);
ret = PTP_RC_OK;
} else {
ret = PTP_ERROR_DATA_EXPECTED;
}
goto exit;
}
if (dtoh16(usbdata.code)!=ptp->Code) {
/* A creative Zen device breaks down here, by leaving out
* Code and Transaction ID */
if (MTP_ZEN_BROKEN_HEADER(params)) {
GP_LOG_D ("Read broken PTP header (Code is %04x vs %04x), compensating.",
dtoh16(usbdata.code), ptp->Code);
usbdata.code = dtoh16(ptp->Code);
usbdata.trans_id = htod32(ptp->Transaction_ID);
} else {
GP_LOG_E ("Read broken PTP header (Code is %04x vs %04x).",
dtoh16(usbdata.code), ptp->Code );
ret = PTP_ERROR_IO;
goto exit;
}
}
if (bytes_read > dtoh32(usbdata.length)) {
/*
* Buffer the surplus response packet if it is >=
* PTP_USB_BULK_HDR_LEN
* (i.e. it is probably an entire package)
* else discard it as erroneous surplus data.
* This will even work if more than 2 packets appear
* in the same transaction, they will just be handled
* iteratively.
*
* Marcus observed stray bytes on iRiver devices;
* these are still discarded.
*/
uint32_t surplen = bytes_read - dtoh32(usbdata.length);
if (surplen >= PTP_USB_BULK_HDR_LEN) {
params->response_packet = malloc(surplen);
if (!params->response_packet) return PTP_RC_GeneralError;
memcpy(params->response_packet, (uint8_t *) &usbdata + dtoh32(usbdata.length), surplen);
params->response_packet_size = surplen;
} else {
GP_LOG_D ("Read %ld bytes too much, expect problems!",
(long)(bytes_read - dtoh32(usbdata.length)));
}
bytes_read = dtoh32(usbdata.length);
}
/* For most PTP devices rlen is 512 == sizeof(usbdata)
* here. For MTP devices splitting header and data it might
* be PTP_USB_BULK_HDR_LEN (12).
*/
/* autodetect split header/data MTP devices */
if (dtoh32(usbdata.length) > PTP_USB_BULK_HDR_LEN && (bytes_read==PTP_USB_BULK_HDR_LEN))
params->split_header_data = 1;
/* Copy the payload bytes we already read (with the first usb packet) */
ret = handler->putfunc (params, handler->priv, bytes_read - PTP_USB_BULK_HDR_LEN, usbdata.payload.data);
if (ret != PTP_RC_OK)
goto exit;
/* Check if we are done already... */
if (bytes_read >= dtoh32(usbdata.length))
goto exit;
/* If not read the rest of it. */
/* Make bytes_to_read contain the number of remaining payload-bytes to read. */
bytes_to_read = dtoh32(usbdata.length) - bytes_read;
/* Make bytes_read contain the number of payload-bytes already read. */
bytes_read -= PTP_USB_BULK_HDR_LEN;
data = malloc(READLEN);
if (!data) return PTP_RC_GeneralError;
report_progress = (bytes_to_read > 2*CONTEXT_BLOCK_SIZE) && (dtoh32(usbdata.length) != 0xffffffffU);
if (report_progress)
progress_id = gp_context_progress_start (context, (bytes_to_read/CONTEXT_BLOCK_SIZE), _("Downloading..."));
while (bytes_to_read > 0) {
unsigned long chunk_to_read = bytes_to_read;
/* if in read-until-short-packet mode, read one packet at a time */
/* else read in large blobs */
/* else read all but the last short packet depending on EP packetsize. */
if (dtoh32(usbdata.length) == 0xffffffffU)
chunk_to_read = PTP_USB_BULK_HS_MAX_PACKET_LEN_READ;
else if (chunk_to_read > READLEN)
chunk_to_read = READLEN;
else if (chunk_to_read > params->maxpacketsize)
chunk_to_read = chunk_to_read - (chunk_to_read % params->maxpacketsize);
res = gp_port_read (camera->port, (char*)data, chunk_to_read);
if (res == GP_ERROR_IO_READ && do_retry) {
GP_LOG_D ("Clearing halt on IN EP and retrying once.");
gp_port_usb_clear_halt (camera->port, GP_PORT_USB_ENDPOINT_IN);
/* retrying only once and only if we did not read anything yet */
do_retry = FALSE;
continue;
} else if (res <= 0) {
ret = PTP_ERROR_IO;
break;
} else
do_retry = FALSE; /* once we have succesfully read any data, don't try again */
ret = handler->putfunc (params, handler->priv, res, data);
if (ret != PTP_RC_OK)
break;
if (dtoh32(usbdata.length) == 0xffffffffU) {
/* once we have read a short packet, we are done. */
if (res < PTP_USB_BULK_HS_MAX_PACKET_LEN_READ)
bytes_to_read = 0;
} else
bytes_to_read -= res;
bytes_read += res;
if (report_progress && ((bytes_read-res)/CONTEXT_BLOCK_SIZE < bytes_read/CONTEXT_BLOCK_SIZE))
gp_context_progress_update (context, progress_id, bytes_read/CONTEXT_BLOCK_SIZE);
/* Only cancel transfers larger than 1MB. as
* canceling did not work on eos_get_viewfinder of 200kb */
if ((bytes_read > 1024*1024) && gp_context_cancel(context) == GP_CONTEXT_FEEDBACK_CANCEL) {
ret = PTP_ERROR_CANCEL;
break;
}
}
if (report_progress)
gp_context_progress_stop (context, progress_id);
exit:
free (data);
if ((ret!=PTP_RC_OK) && (ret!=PTP_ERROR_CANCEL)) {
GP_LOG_E ("PTP_OC 0x%04x receiving data failed: %s (0x%04x)", ptp->Code, ptp_strerror(ret, params->deviceinfo.VendorExtensionID), ret);
return PTP_ERROR_IO;
}
return ret;
}
