Gnash 0.8.10dev
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00001 // MediaParserFfmpeg.h: FFMEPG media parsers, for Gnash 00002 // 00003 // Copyright (C) 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. 00004 // 00005 // This program is free software; you can redistribute it and/or modify 00006 // it under the terms of the GNU General Public License as published by 00007 // the Free Software Foundation; either version 3 of the License, or 00008 // (at your option) any later version. 00009 // 00010 // This program is distributed in the hope that it will be useful, 00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00013 // GNU General Public License for more details. 00014 // 00015 // You should have received a copy of the GNU General Public License 00016 // along with this program; if not, write to the Free Software 00017 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 00018 00019 #ifndef GNASH_MEDIAPARSER_FFMPEG_H 00020 #define GNASH_MEDIAPARSER_FFMPEG_H 00021 00022 #include "MediaParser.h" // for inheritance 00023 #include "ffmpegHeaders.h" 00024 00025 #include <boost/scoped_array.hpp> 00026 #include <memory> 00027 00028 // Forward declaration 00029 namespace gnash { 00030 class IOChannel; 00031 } 00032 00033 namespace gnash { 00034 namespace media { 00035 namespace ffmpeg { 00036 00038 // 00041 class ExtraAudioInfoFfmpeg : public AudioInfo::ExtraInfo 00042 { 00043 public: 00044 ExtraAudioInfoFfmpeg(boost::uint8_t* nData, size_t nDataSize) 00045 : 00046 data(nData), 00047 dataSize(nDataSize) 00048 { 00049 } 00050 boost::uint8_t* data; 00051 size_t dataSize; 00052 }; 00053 00055 // 00058 class ExtraVideoInfoFfmpeg : public VideoInfo::ExtraInfo 00059 { 00060 public: 00061 ExtraVideoInfoFfmpeg(boost::uint8_t* nData, size_t nDataSize) 00062 : 00063 data(nData), 00064 dataSize(nDataSize) 00065 { 00066 } 00067 boost::uint8_t* data; 00068 size_t dataSize; 00069 }; 00070 00072 class MediaParserFfmpeg: public MediaParser 00073 { 00074 public: 00075 00077 // 00080 MediaParserFfmpeg(std::auto_ptr<IOChannel> stream); 00081 00082 ~MediaParserFfmpeg(); 00083 00084 // See dox in MediaParser.h 00085 virtual bool seek(boost::uint32_t&); 00086 00087 // See dox in MediaParser.h 00088 virtual bool parseNextChunk(); 00089 00090 // See dox in MediaParser.h 00091 virtual boost::uint64_t getBytesLoaded() const; 00092 00093 private: 00094 00095 #if defined (LIBAVFORMAT_VERSION_INT) && LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT( 52, 31, 0 ) 00096 00097 void logMetadataEntry(const char *format, const char* key); 00098 #endif 00099 00102 void initializeParser(); 00103 00105 // 00109 size_t _nextVideoFrame; 00110 00112 // 00116 size_t _nextAudioFrame; 00117 00119 // 00122 bool parseNextFrame(); 00123 00125 int readPacket(boost::uint8_t* buf, int buf_size); 00126 00128 static int readPacketWrapper(void* opaque, boost::uint8_t* buf, int buf_size); 00129 00131 boost::int64_t seekMedia(boost::int64_t offset, int whence); 00132 00134 static boost::int64_t seekMediaWrapper(void *opaque, boost::int64_t offset, int whence); 00135 00137 AVInputFormat* probeStream(); 00138 00139 AVInputFormat* _inputFmt; 00140 00142 AVFormatContext *_formatCtx; 00143 00145 int _videoStreamIndex; 00146 00148 AVStream* _videoStream; 00149 00151 int _audioStreamIndex; 00152 00153 // audio 00154 AVStream* _audioStream; 00155 00157 #if !defined (LIBAVFORMAT_VERSION_MAJOR) || LIBAVFORMAT_VERSION_MAJOR < 53 00158 ByteIOContext _byteIOCxt; 00159 #endif 00160 00162 // 00166 static const size_t byteIOBufferSize = 1024; 00167 00168 boost::scoped_array<unsigned char> _byteIOBuffer; 00169 00171 boost::uint64_t _lastParsedPosition; 00172 00174 // 00177 boost::uint16_t SampleFormatToSampleSize(SampleFormat fmt); 00178 00180 // 00181 bool parseVideoFrame(AVPacket& packet); 00182 00184 bool parseAudioFrame(AVPacket& packet); 00185 }; 00186 00187 00188 } // gnash.media.ffmpeg namespace 00189 } // gnash.media namespace 00190 } // namespace gnash 00191 00192 #endif // __MEDIAPARSER_FFMPEG_H__