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/*****************************************************************************
* HLSManager.cpp
*****************************************************************************
* Copyright © 2015 VideoLAN and VLC authors
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "HLSManager.hpp"
#include "../adaptive/tools/Retrieve.hpp"
#include "../adaptive/http/HTTPConnectionManager.h"
#include "playlist/Parser.hpp"
#include <vlc_stream.h>
#include <vlc_demux.h>
#include <time.h>
using namespace adaptive;
using namespace adaptive::logic;
using namespace hls;
using namespace hls::playlist;
HLSManager::HLSManager(demux_t *demux_,
SharedResources *res,
M3U8 *playlist,
AbstractStreamFactory *factory,
AbstractAdaptationLogic::LogicType type) :
PlaylistManager(demux_, res, playlist, factory, type)
{
}
HLSManager::~HLSManager()
{
}
bool HLSManager::isHTTPLiveStreaming(stream_t *s)
{
const uint8_t *peek;
int size = vlc_stream_Peek(s, &peek, 7);
if (size < 7 || memcmp(peek, "#EXTM3U", 7))
return false;
size = vlc_stream_Peek(s, &peek, 8192);
if (size < 7)
return false;
peek += 7;
size -= 7;
/* Parse stream and search for
* EXT-X-TARGETDURATION or EXT-X-STREAM-INF tag, see
* http://tools.ietf.org/html/draft-pantos-http-live-streaming-04#page-8 */
while (size--)
{
static const char *const ext[] = {
"TARGETDURATION",
"MEDIA-SEQUENCE",
"KEY",
"ALLOW-CACHE",
"ENDLIST",
"STREAM-INF",
"DISCONTINUITY",
"VERSION"
};
if (*peek++ != '#')
continue;
if (size < 6)
continue;
if (memcmp(peek, "EXT-X-", 6))
continue;
peek += 6;
size -= 6;
for (size_t i = 0; i < ARRAY_SIZE(ext); i++)
{
size_t len = strlen(ext[i]);
if (size < 0 || (size_t)size < len)
continue;
if (!memcmp(peek, ext[i], len))
return true;
}
}
return false;
}
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