static void
stream_chunk_raw_cb(int fd, short event, void *arg)
{
struct stream_ctx *st;
size_t chunk_size;
int ret;
st = (struct stream_ctx *)arg;
if (st->end_offset && (st->offset > st->end_offset))
{
stream_end(st, 0);
return;
}
if (st->end_offset && ((st->offset + STREAM_CHUNK_SIZE) > (st->end_offset + 1)))
chunk_size = st->end_offset + 1 - st->offset;
else
chunk_size = STREAM_CHUNK_SIZE;
ret = read(st->fd, st->buf, chunk_size);
if (ret <= 0)
{
if (ret == 0)
DPRINTF(E_LOG, L_HTTPD, "Done streaming file id %d\n", st->id);
else
DPRINTF(E_LOG, L_HTTPD, "Streaming error, file id %d\n", st->id);
stream_end(st, 0);
return;
}
DPRINTF(E_DBG, L_HTTPD, "Read %d bytes; streaming file id %d\n", ret, st->id);
evbuffer_add(st->evbuf, st->buf, ret);
#ifdef HAVE_LIBEVENT2_OLD
evhttp_send_reply_chunk(st->req, st->evbuf);
struct evhttp_connection *evcon = evhttp_request_get_connection(st->req);
struct bufferevent *bufev = evhttp_connection_get_bufferevent(evcon);
g_st = st; // Can't pass st to callback so use global - limits libevent 2.0 to a single stream
bufev->writecb = stream_chunk_resched_cb_wrapper;
#else
evhttp_send_reply_chunk_with_cb(st->req, st->evbuf, stream_chunk_resched_cb, st);
#endif
st->offset += ret;
stream_up_playcount(st);
}
void streaming_sort() {
int capacity = 256;
int nitems = 0,i=0;
int buffer[capacity];
stream_init(); // GET READY
FILE*file = open_infile(infile_name);
while(!feof(file) && !ferror(file)) {
int success = fscanf(file,"%d",buffer + i);
if(success != 1)
break;
nitems++; i++;
if(i == capacity) {
stream_data( buffer, i); // SOME DATA FOR YOU
i = 0;
}
}
if(i)
stream_data( buffer, i); // HAVE A BIT MORE DATA
stream_end(); // DONE
fclose(file);
}
int pull_all_callback(void *cdata, neo4j_message_type_t type,
const neo4j_value_t *argv, uint16_t argc)
{
assert(cdata != NULL);
assert(argc == 0 || argv != NULL);
run_result_stream_t *results = (run_result_stream_t *)cdata;
if (type == NEO4J_RECORD_MESSAGE)
{
if (append_result(results, argv, argc))
{
neo4j_log_trace_errno(results->logger, "append_result failed");
set_failure(results, errno);
return -1;
}
return 1;
}
--(results->refcount);
results->streaming = false;
// not a record, so keep this memory along with the result stream
if (neo4j_mpool_merge(&(results->mpool), &(results->record_mpool)) < 0)
{
neo4j_log_trace_errno(results->logger, "neo4j_mpool_merge failed");
set_failure(results, errno);
return -1;
}
return stream_end(results, type, "PULL_ALL", argv, argc);
}
int VIDEO_streamSysExit()
{
stream_end( stream_get_handle() );
pthread_mutex_destroy(&gbl.mutex);
return OSA_SOK;
}
int discard_all_callback(void *cdata, neo4j_message_type_t type,
const neo4j_value_t *argv, uint16_t argc)
{
assert(cdata != NULL);
assert(argc == 0 || argv != NULL);
run_result_stream_t *results = (run_result_stream_t *)cdata;
--(results->refcount);
results->streaming = false;
return stream_end(results, type, "DISCARD_ALL", argv, argc);
}
static void
stream_fail_cb(struct evhttp_connection *evcon, void *arg)
{
struct stream_ctx *st;
st = (struct stream_ctx *)arg;
DPRINTF(E_WARN, L_HTTPD, "Connection failed; stopping streaming of file ID %d\n", st->id);
/* Stop streaming */
event_del(st->ev);
stream_end(st, 1);
}
static void
stream_chunk_resched_cb(struct evhttp_connection *evcon, void *arg)
{
struct stream_ctx *st;
struct timeval tv;
int ret;
st = (struct stream_ctx *)arg;
evutil_timerclear(&tv);
ret = event_add(st->ev, &tv);
if (ret < 0)
{
DPRINTF(E_LOG, L_HTTPD, "Could not re-add one-shot event for streaming\n");
stream_end(st, 0);
}
}
static void
stream_chunk_xcode_cb(int fd, short event, void *arg)
{
struct stream_ctx *st;
struct timeval tv;
int xcoded;
int ret;
int dummy;
st = (struct stream_ctx *)arg;
xcoded = transcode(st->evbuf, STREAM_CHUNK_SIZE, st->xcode, &dummy);
if (xcoded <= 0)
{
if (xcoded == 0)
DPRINTF(E_LOG, L_HTTPD, "Done streaming transcoded file id %d\n", st->id);
else
DPRINTF(E_LOG, L_HTTPD, "Transcoding error, file id %d\n", st->id);
stream_end(st, 0);
return;
}
DPRINTF(E_DBG, L_HTTPD, "Got %d bytes from transcode; streaming file id %d\n", xcoded, st->id);
/* Consume transcoded data until we meet start_offset */
if (st->start_offset > st->offset)
{
ret = st->start_offset - st->offset;
if (ret < xcoded)
{
evbuffer_drain(st->evbuf, ret);
st->offset += ret;
ret = xcoded - ret;
}
else
{
evbuffer_drain(st->evbuf, xcoded);
st->offset += xcoded;
goto consume;
}
}
else
ret = xcoded;
#ifdef HAVE_LIBEVENT2_OLD
evhttp_send_reply_chunk(st->req, st->evbuf);
struct evhttp_connection *evcon = evhttp_request_get_connection(st->req);
struct bufferevent *bufev = evhttp_connection_get_bufferevent(evcon);
g_st = st; // Can't pass st to callback so use global - limits libevent 2.0 to a single stream
bufev->writecb = stream_chunk_resched_cb_wrapper;
#else
evhttp_send_reply_chunk_with_cb(st->req, st->evbuf, stream_chunk_resched_cb, st);
#endif
st->offset += ret;
stream_up_playcount(st);
return;
consume: /* reschedule immediately - consume up to start_offset */
evutil_timerclear(&tv);
ret = event_add(st->ev, &tv);
if (ret < 0)
{
DPRINTF(E_LOG, L_HTTPD, "Could not re-add one-shot event for streaming (xcode)\n");
stream_end(st, 0);
return;
}
}
inline unsigned char stream_next(struct reg_stream* p){
return (stream_end(p))?('\0'):(p->buff[(p->pos)++]);
}
inline unsigned char stream_char(struct reg_stream* p){
return (stream_end(p))?('\0'):(p->buff[p->pos]);
}
