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