OggStreamFactory.cpp

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00001 //===========================================================================
00002 //Copyright (C) 2003, 2004 Zentaro Kavanagh
00003 //
00004 //Redistribution and use in source and binary forms, with or without
00005 //modification, are permitted provided that the following conditions
00006 //are met:
00007 //
00008 //- Redistributions of source code must retain the above copyright
00009 //  notice, this list of conditions and the following disclaimer.
00010 //
00011 //- Redistributions in binary form must reproduce the above copyright
00012 //  notice, this list of conditions and the following disclaimer in the
00013 //  documentation and/or other materials provided with the distribution.
00014 //
00015 //- Neither the name of Zentaro Kavanagh nor the names of contributors 
00016 //  may be used to endorse or promote products derived from this software 
00017 //  without specific prior written permission.
00018 //
00019 //THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
00020 //``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00021 //LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
00022 //PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE ORGANISATION OR
00023 //CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00024 //EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
00025 //PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00026 //PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00027 //LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00028 //NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00029 //SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00030 //===========================================================================
00031 #include "stdafx.h"
00032 #include "oggstreamfactory.h"
00033 
00034 
00035 
00036 OggStreamFactory::OggStreamFactory(void)
00037 {
00038 }
00039 
00040 OggStreamFactory::~OggStreamFactory(void)
00041 {
00042 }
00043 
00044 //New codecs need to be added here and write a derived Stream Class.
00045 OggStream* OggStreamFactory::CreateStream(OggPage* inOggPage, OggDemuxSourceFilter* inOwningFilter, bool inAllowSeek) {
00046         switch (OggStreamFactory::IdentifyCodec(inOggPage->getPacket(0))) {
00047                 case StreamHeaders::VORBIS:
00048                         return new VorbisStream(inOggPage, inOwningFilter, inAllowSeek);
00049                 case StreamHeaders::SPEEX:
00050                         return new SpeexStream(inOggPage, inOwningFilter, inAllowSeek);
00051                 case StreamHeaders::FLAC:
00052                         return new FLACStream(inOggPage, inOwningFilter, inAllowSeek);
00053                 case StreamHeaders::OGG_FLAC_1_0:
00054                         return new OggFLAC_1_0_Stream(inOggPage, inOwningFilter, inAllowSeek);
00055                 case StreamHeaders::THEORA:
00056                         return new TheoraStream(inOggPage, inOwningFilter, inAllowSeek);
00057                 case StreamHeaders::FFDSHOW_VIDEO:
00058                         return new FFDShowVideoStream(inOggPage, inOwningFilter, inAllowSeek);
00059                 case StreamHeaders::NONE:
00060                 default:
00061                         return NULL;
00062         }
00063 }
00064 
00065 StreamHeaders::eCodecType OggStreamFactory::IdentifyCodec(OggPacket* inOggPacket) {
00066         if (strncmp((char*)inOggPacket->packetData(), "\001vorbis", 7) == 0) {
00067                 return StreamHeaders::VORBIS;
00068         } else if (strncmp((char*)inOggPacket->packetData(), "Speex   ", 8) == 0) {
00069                 return StreamHeaders::SPEEX;
00070         } else if ((strncmp((char*)inOggPacket->packetData(), "fLaC", 4)) == 0) {
00071                 return StreamHeaders::FLAC;
00072         } else if ((strncmp((char*)inOggPacket->packetData(), "\177FLAC", 5)) == 0) {
00073                 return StreamHeaders::OGG_FLAC_1_0;
00074         } else if ((strncmp((char*)inOggPacket->packetData(), "\200theora", 7)) == 0) {
00075                 return StreamHeaders::THEORA;
00076         } else if ((strncmp((char*)inOggPacket->packetData(), "\001video\000\000\000", 9)) == 0) {
00077                 return StreamHeaders::FFDSHOW_VIDEO;
00078         }
00079         
00080         return StreamHeaders::NONE;
00081         
00082 }

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