/* helper function for reading data from a client */
int client_read_bytes (client_t *client, void *buf, unsigned len)
{
int bytes;
if (client->refbuf && client->refbuf->len)
{
/* we have data to read from a refbuf first */
if (client->refbuf->len < len)
len = client->refbuf->len;
memcpy (buf, client->refbuf->data, len);
if (len < client->refbuf->len)
{
char *ptr = client->refbuf->data;
memmove (ptr, ptr+len, client->refbuf->len - len);
}
client->refbuf->len -= len;
return len;
}
bytes = sock_read_bytes (client->con->sock, buf, len);
if (bytes > 0)
return bytes;
if (bytes < 0)
{
if (sock_recoverable (sock_error()))
return -1;
WARN0 ("source connection has died");
}
client->con->error = 1;
return -1;
}
/* handlers (default) for reading and writing a connection_t, no encrpytion
* used just straight access to the socket
*/
int connection_read (connection_t *con, void *buf, size_t len)
{
int bytes = sock_read_bytes (con->sock, buf, len);
if (bytes == 0)
con->error = 1;
if (bytes == -1 && !sock_recoverable (sock_error()))
con->error = 1;
return bytes;
}
/* main plugin handler for getting a buffer for the queue. In here we
* just add an incoming page to the codecs and process it until either
* more data is needed or we prodice a buffer for the queue.
*/
static refbuf_t *ogg_get_buffer (source_t *source)
{
ogg_state_t *ogg_info = source->format->_state;
char *data = NULL;
int bytes;
while (1)
{
while (1)
{
ogg_page page;
refbuf_t *refbuf;
ogg_codec_t *codec = ogg_info->current;
/* if a codec has just been given a page then process it */
if (codec && codec->process)
{
refbuf = codec->process (ogg_info, codec);
if (refbuf)
return complete_buffer (source, refbuf);
ogg_info->current = NULL;
}
if (ogg_sync_pageout (&ogg_info->oy, &page) > 0)
{
if (ogg_page_bos (&page))
{
process_initial_page (source->format, &page);
continue;
}
ogg_info->bos_completed = 1;
refbuf = process_ogg_page (ogg_info, &page);
if (ogg_info->error)
{
ERROR0 ("Problem processing stream");
source->running = 0;
return NULL;
}
if (refbuf)
return complete_buffer (source, refbuf);
continue;
}
/* need more stream data */
break;
}
/* we need more data to continue getting pages */
data = ogg_sync_buffer (&ogg_info->oy, 4096);
bytes = sock_read_bytes (source->con->sock, data, 4096);
if (bytes < 0)
{
if (sock_recoverable (sock_error()))
return NULL;
WARN0 ("source connection has died");
ogg_sync_wrote (&ogg_info->oy, 0);
source->running = 0;
return NULL;
}
if (bytes == 0)
{
INFO1 ("End of Stream %s", source->mount);
ogg_sync_wrote (&ogg_info->oy, 0);
source->running = 0;
return NULL;
}
ogg_sync_wrote (&ogg_info->oy, bytes);
}
}
