static size_t curl_cback(void *ptr, size_t size, size_t nmemb, void *data) {
uint8_t *b = ptr;
size_t want;
int timeout;
size *= nmemb;
nmemb = size;
/* we don't check for overrun and just overwrite existing data */
while(size != 0) {
timeout = 0;
while((will_overflow() && (timeout++ < 20)) || paused || stopped) {
if(stopped)
return 0;
usleep(100000);
}
want = bps - writeoff;
if(want > size)
want = size;
memcpy(buffer + (bend * bps) + writeoff, b, want);
writeoff += want;
if(writeoff == bps) {
if(++bend == BUFFCNT)
bend = 0;
writeoff = 0;
}
b += want;
size -= want;
}
return nmemb;
}
static size_t curl_cback(void *ptr, size_t size, size_t nmemb, void *data) {
uint8_t *b = ptr;
size_t want;
size *= nmemb;
nmemb = size;
/* we don't check for overrun and just overwrite existing data */
while(size != 0) {
while(will_overflow()) {
printf(".");
fflush(stdout);
usleep(100000);
}
printf("CURL : %u bytes\n", size);
want = bps - writeoff;
if(want > size)
want = size;
memcpy(buffer + (bend * bps) + writeoff, b, want);
writeoff += want;
if(writeoff == bps) {
if(++bend == BUFFCNT)
bend = 0;
writeoff = 0;
}
b += want;
size -= want;
}
return nmemb;
}
int main(void)
{
int prediction = will_overflow(INT_MAX);
int actual = plus_one(INT_MAX) == INT_MIN;
if (prediction == actual) {
printf("SUCCESS\n");
}
else {
printf("FAILURE\n");
}
return 0;
}
static DWORD WINAPI curl_threadfunc(LPVOID _unused) {
#else
static void *curl_threadfunc(void *_unused) {
#endif
int i;
CURLMsg *msg;
int timeout;
CURLcode cd = CURLE_OK;
while(1) {
while(1) {
retry_ok:
cd = CURLE_OK;
timeout = 0;
while((will_overflow() && (timeout++ < 20)) || (paused) || (stopped)) {
usleep(100000);
if(paused || stopped)
timeout = 18;
}
curl_multi_perform(curl_multi, &i);
while((msg = curl_multi_info_read(curl_multi, &i)) != NULL) {
if(msg->msg == CURLMSG_DONE) {
if(msg->data.result == CURLE_OK) {
printf("Stop (URL complete)\n");
stopped = paused = 1;
curl_multi_remove_handle(curl_multi, curl_handle);
goto retry_ok;
}
cd = msg->data.result;
goto retry;
}
}
}
retry:
if(cd != CURLE_OK)
printf("URL error: %s\n", curl_easy_strerror(cd));
sleep(2);
printf("Retrying URL connect...\n");
}
return 0;
}
DecodedImageWinId GlzDecoderWindow::pre_decode_update_window(uint64_t image_id,
uint64_t relative_head_id)
{
Lock lock(_win_modifiers_mutex);
int realloc_size;
while (will_overflow(image_id, relative_head_id)) {
if (_aborting) {
THROW("aborting");
}
_release_image_cond.wait(lock);
}
// The following conditions prevent starvation in case thread (1) should realloc,
// thread (2) is during decode and waits for a previous image and
/// thread (3) should decode this the previous image and needs to enter pre decode although
// (1) is in there.
// We must give priority to older images in the window.
// The condition should be checked over again in case a later image entered the window
// and the realocation was already performed
while ((realloc_size = calc_realloc_size(image_id))) {
if (_aborting) {
THROW("aborting");
}
if (_win_alloc_rw_mutex.try_write_lock()) {
realloc(realloc_size);
_win_alloc_rw_mutex.write_unlock();
break;
} else {
_win_alloc_cond.wait(lock);
}
}
if (image_id > _tail_image_id) { // not in missing list
add_pre_decoded_image(image_id);
}
return calc_image_win_idx(image_id);
}
static void
exif_mnote_data_olympus_load (ExifMnoteData *en,
const unsigned char *buf, unsigned int buf_size)
{
ExifMnoteDataOlympus *n = (ExifMnoteDataOlympus *) en;
ExifShort c;
size_t i, tcount, o, o2, datao = 6, base = 0;
if (!n || !buf || !buf_size || will_overflow(n->offset, 6)) {
exif_log (en->log, EXIF_LOG_CODE_CORRUPT_DATA,
"ExifMnoteDataOlympus", "Short MakerNote");
return;
}
o2 = 6 + n->offset; /* Start of interesting data */
if (exceeds_buffer(buf_size, o2, 10)) {
exif_log (en->log, EXIF_LOG_CODE_CORRUPT_DATA,
"ExifMnoteDataOlympus", "Short MakerNote");
return;
}
/*
* Olympus headers start with "OLYMP" and need to have at least
* a size of 22 bytes (6 for 'OLYMP', 2 other bytes, 2 for the
* number of entries, and 12 for one entry.
*
* Sanyo format is identical and uses identical tags except that
* header starts with "SANYO".
*
* Epson format is identical and uses identical tags except that
* header starts with "EPSON".
*
* Nikon headers start with "Nikon" (6 bytes including '\0'),
* version number (1 or 2).
*
* Version 1 continues with 0, 1, 0, number_of_tags,
* or just with number_of_tags (models D1H, D1X...).
*
* Version 2 continues with an unknown byte (0 or 10),
* two unknown bytes (0), "MM" or "II", another byte 0 and
* lastly 0x2A.
*/
n->version = exif_mnote_data_olympus_identify_variant(buf+o2, buf_size-o2);
switch (n->version) {
case olympusV1:
case sanyoV1:
case epsonV1:
exif_log (en->log, EXIF_LOG_CODE_DEBUG, "ExifMnoteDataOlympus",
"Parsing Olympus/Sanyo/Epson maker note v1...");
/* The number of entries is at position 8. */
if (buf[o2 + 6] == 1)
n->order = EXIF_BYTE_ORDER_INTEL;
else if (buf[o2 + 6 + 1] == 1)
n->order = EXIF_BYTE_ORDER_MOTOROLA;
o2 += 8;
c = exif_get_short (buf + o2, n->order);
if ((!(c & 0xFF)) && (c > 0x500)) {
if (n->order == EXIF_BYTE_ORDER_INTEL) {
n->order = EXIF_BYTE_ORDER_MOTOROLA;
} else {
n->order = EXIF_BYTE_ORDER_INTEL;
}
}
break;
case olympusV2:
/* Olympus S760, S770 */
datao = o2;
o2 += 8;
if (exceeds_buffer(buf_size, o2, 4)) return;
exif_log (en->log, EXIF_LOG_CODE_DEBUG, "ExifMnoteDataOlympus",
"Parsing Olympus maker note v2 (0x%02x, %02x, %02x, %02x)...",
buf[o2], buf[o2 + 1], buf[o2 + 2], buf[o2 + 3]);
if ((buf[o2] == 'I') && (buf[o2 + 1] == 'I'))
n->order = EXIF_BYTE_ORDER_INTEL;
else if ((buf[o2] == 'M') && (buf[o2 + 1] == 'M'))
n->order = EXIF_BYTE_ORDER_MOTOROLA;
/* The number of entries is at position 8+4. */
if (will_overflow(o2, 4)) return;
o2 += 4;
break;
case nikonV1:
o2 += 6;
if (exceeds_buffer(buf_size, o2, 8)) return;
exif_log (en->log, EXIF_LOG_CODE_DEBUG, "ExifMnoteDataOlympus",
"Parsing Nikon maker note v1 (0x%02x, %02x, %02x, "
"%02x, %02x, %02x, %02x, %02x)...",
buf[o2 + 0], buf[o2 + 1], buf[o2 + 2], buf[o2 + 3],
buf[o2 + 4], buf[o2 + 5], buf[o2 + 6], buf[o2 + 7]);
/* Skip version number */
o2 += 1;
/* Skip an unknown byte (00 or 0A). */
o2 += 1;
base = MNOTE_NIKON1_TAG_BASE;
/* Fix endianness, if needed */
c = exif_get_short (buf + o2, n->order);
if ((!(c & 0xFF)) && (c > 0x500)) {
if (n->order == EXIF_BYTE_ORDER_INTEL) {
n->order = EXIF_BYTE_ORDER_MOTOROLA;
} else {
n->order = EXIF_BYTE_ORDER_INTEL;
}
}
break;
case nikonV2:
o2 += 6;
if (exceeds_buffer(buf_size, o2, 8)) return;
exif_log (en->log, EXIF_LOG_CODE_DEBUG, "ExifMnoteDataOlympus",
"Parsing Nikon maker note v2 (0x%02x, %02x, %02x, "
"%02x, %02x, %02x, %02x, %02x)...",
buf[o2 + 0], buf[o2 + 1], buf[o2 + 2], buf[o2 + 3],
buf[o2 + 4], buf[o2 + 5], buf[o2 + 6], buf[o2 + 7]);
/* Skip version number */
o2 += 1;
/* Skip an unknown byte (00 or 0A). */
o2 += 1;
/* Skip 2 unknown bytes (00 00). */
o2 += 2;
/*
* Byte order. From here the data offset
* gets calculated.
*/
if (exceeds_buffer(buf_size, o2, 2)) return;
datao = o2;
if (!strncmp ((char *)&buf[o2], "II", 2))
n->order = EXIF_BYTE_ORDER_INTEL;
else if (!strncmp ((char *)&buf[o2], "MM", 2))
n->order = EXIF_BYTE_ORDER_MOTOROLA;
else {
exif_log (en->log, EXIF_LOG_CODE_DEBUG,
"ExifMnoteDataOlympus", "Unknown "
"byte order '%c%c'", buf[o2],
buf[o2 + 1]);
return;
}
o2 += 2;
/* Skip 2 unknown bytes (00 2A). */
if (will_overflow(o2, 2)) return;
o2 += 2;
/* Go to where the number of entries is. */
if (exceeds_buffer(buf_size, o2, 4)) return;
if (will_overflow(datao, exif_get_long (buf + o2, n->order))) return;
o2 = datao + exif_get_long (buf + o2, n->order);
break;
case nikonV0:
exif_log (en->log, EXIF_LOG_CODE_DEBUG, "ExifMnoteDataOlympus",
"Parsing Nikon maker note v0 (0x%02x, %02x, %02x, "
"%02x, %02x, %02x, %02x, %02x)...",
buf[o2 + 0], buf[o2 + 1], buf[o2 + 2], buf[o2 + 3],
buf[o2 + 4], buf[o2 + 5], buf[o2 + 6], buf[o2 + 7]);
/* 00 1b is # of entries in Motorola order - the rest should also be in MM order */
n->order = EXIF_BYTE_ORDER_MOTOROLA;
break;
default:
exif_log (en->log, EXIF_LOG_CODE_DEBUG, "ExifMnoteDataOlympus",
"Unknown Olympus variant %i.", n->version);
return;
}
/* Sanity check the offset */
if (exceeds_buffer(buf_size, o2, 2)) {
exif_log (en->log, EXIF_LOG_CODE_CORRUPT_DATA,
"ExifMnoteOlympus", "Short MakerNote");
return;
}
/* Read the number of tags */
c = exif_get_short (buf + o2, n->order);
o2 += 2;
/* Remove any old entries */
exif_mnote_data_olympus_clear (n);
/* Reserve enough space for all the possible MakerNote tags */
n->entries = exif_mem_alloc (en->mem, sizeof (MnoteOlympusEntry) * c);
if (!n->entries) {
EXIF_LOG_NO_MEMORY(en->log, "ExifMnoteOlympus", sizeof (MnoteOlympusEntry) * c);
return;
}
/* Parse all c entries, storing ones that are successfully parsed */
tcount = 0;
for (i = c, o = o2; i; --i, o += 12) {
size_t s;
if (exceeds_buffer(buf_size, o, 12)) {
exif_log (en->log, EXIF_LOG_CODE_CORRUPT_DATA,
"ExifMnoteOlympus", "Short MakerNote");
break;
}
n->entries[tcount].tag = exif_get_short (buf + o, n->order) + base;
n->entries[tcount].format = exif_get_short (buf + o + 2, n->order);
n->entries[tcount].components = exif_get_long (buf + o + 4, n->order);
n->entries[tcount].order = n->order;
exif_log (en->log, EXIF_LOG_CODE_DEBUG, "ExifMnoteOlympus",
"Loading entry 0x%x ('%s')...", n->entries[tcount].tag,
mnote_olympus_tag_get_name (n->entries[tcount].tag));
/* exif_log (en->log, EXIF_LOG_CODE_DEBUG, "ExifMnoteOlympus",
"0x%x %d %ld*(%d)",
n->entries[tcount].tag,
n->entries[tcount].format,
n->entries[tcount].components,
(int)exif_format_get_size(n->entries[tcount].format)); */
/*
* Size? If bigger than 4 bytes, the actual data is not
* in the entry but somewhere else (offset).
*/
s = exif_format_get_size (n->entries[tcount].format) *
n->entries[tcount].components;
n->entries[tcount].size = s;
if (s) {
size_t dataofs = o + 8;
if (s > 4) {
/* The data in this case is merely a pointer */
dataofs = exif_get_long (buf + dataofs, n->order) + datao;
#ifdef EXIF_OVERCOME_SANYO_OFFSET_BUG
/* Some Sanyo models (e.g. VPC-C5, C40) suffer from a bug when
* writing the offset for the MNOTE_OLYMPUS_TAG_THUMBNAILIMAGE
* tag in its MakerNote. The offset is actually the absolute
* position in the file instead of the position within the IFD.
*/
if (dataofs + s > buf_size && n->version == sanyoV1) {
/* fix pointer */
dataofs -= datao + 6;
exif_log (en->log, EXIF_LOG_CODE_DEBUG,
"ExifMnoteOlympus",
"Inconsistent thumbnail tag offset; attempting to recover");
}
#endif
}
if (exceeds_buffer(buf_size, dataofs, s)) {
exif_log (en->log, EXIF_LOG_CODE_DEBUG,
"ExifMnoteOlympus",
"Tag data past end of buffer (%u > %u)",
dataofs + s, buf_size);
continue;
}
n->entries[tcount].data = exif_mem_alloc (en->mem, s);
if (!n->entries[tcount].data) {
EXIF_LOG_NO_MEMORY(en->log, "ExifMnoteOlympus", s);
continue;
}
memcpy (n->entries[tcount].data, buf + dataofs, s);
}
/* Tag was successfully parsed */
++tcount;
}
/* Store the count of successfully parsed tags */
n->count = tcount;
}
static DWORD WINAPI curl_threadfunc(LPVOID _unused) {
#else
static void *curl_threadfunc(void *_unused) {
#endif
while(1) {
if(will_overflow()) {
curl_easy_pause(curl_handle, CURLPAUSE_ALL);
do {
printf(".");
fflush(stdout);
usleep(100000);
} while(will_overflow());
curl_easy_pause(curl_handle, CURLPAUSE_CONT);
}
if(curl_easy_perform(curl_handle) != CURLE_OK)
sleep(2);
printf("Retrying URL connect...\n");
}
return 0;
}
int main(int argc, char *argv[]) {
#ifdef _WIN32
int tid;
#else
pthread_t thd;
#endif
if(argc != 4) {
fprintf(stderr, "Usage: %s <stream_url> <nbd_addr> <nbd_port>\n", argv[0]);
return 1;
}
curl_global_init(CURL_GLOBAL_ALL);
curl_handle = curl_easy_init();
curl_easy_setopt(curl_handle, CURLOPT_URL, argv[1]);
curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, curl_cback);
curl_easy_setopt(curl_handle, CURLOPT_USERAGENT, "vdf_stream");
drv = vdf_drive_create(DRIVE_SIZE, DRIVE_FLAGS);
if(drv == NULL) {
perror("vdf_createdrive");
return 1;
}
bps = vdf_drive_sectorsize(drv);
filesize = (vdf_drive_dataclusters(drv) - 16) * vdf_drive_clustersize(drv); /* leave a bit of room */
bufflen = bps * BUFFCNT;
buffer = malloc(bufflen);
if(buffer == NULL) {
perror("malloc");
return 1;
}
bstart = bend = 0;
writeoff = 0;
fil = vdf_add_file_virt(vdf_drive_root(drv), TRACK_NAME, filesize, file_cback, NULL, 0);
if(fil == NULL) {
perror("vdf_add_file_virt");
return 1;
}
trans = vdf_transport_open(VTD_NBD_CLI_STR, drv, NULL, argv[2], argv[3]);
if(trans == NULL) {
perror("vdf_transport_open");
return 1;
}
#ifdef _WIN32
if(CreateThread(NULL, 0, curl_threadfunc, NULL, 0, &tid) == NULL) {
perror("CreateThread");
return 1;
}
#else
if(pthread_create(&thd, NULL, curl_threadfunc, NULL) == -1) {
perror("pthread_create");
return 1;
}
#endif
// vdf_dump_drive_info(drv, stdout);
// vdf_dump_drive(drv, "stream.img");
// return 0;
while(1) {
if(vdf_transport_start(trans) == 0) {
while(vdf_transport_process(trans) == 0);
} else {
printf("Retrying NBD connect...\n");
sleep(2);
}
}
}
