oggdsf/src/lib/core/directshow/dsfOggDemux/OggStreamFactory.cpp

   1 //===========================================================================
   2 //Copyright (C) 2003, 2004 Zentaro Kavanagh
   3 //
   4 //Redistribution and use in source and binary forms, with or without
   5 //modification, are permitted provided that the following conditions
   6 //are met:
   7 //
   8 //- Redistributions of source code must retain the above copyright
   9 //  notice, this list of conditions and the following disclaimer.
  10 //
  11 //- Redistributions in binary form must reproduce the above copyright
  12 //  notice, this list of conditions and the following disclaimer in the
  13 //  documentation and/or other materials provided with the distribution.
  14 //
  15 //- Neither the name of Zentaro Kavanagh nor the names of contributors
  16 //  may be used to endorse or promote products derived from this software
  17 //  without specific prior written permission.
  18 //
  19 //THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  20 //``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  21 //LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  22 //PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE ORGANISATION OR
  23 //CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  24 //EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  25 //PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  26 //PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  27 //LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  28 //NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  29 //SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30 //===========================================================================
  31 #include "stdafx.h"
  32 #include "oggstreamfactory.h"
  33
  34
  35
  36 OggStreamFactory::OggStreamFactory(void)
  37 {
  38 }
  39
  40 OggStreamFactory::~OggStreamFactory(void)
  41 {
  42 }
  43
  44 //New codecs need to be added here and write a derived Stream Class.
  45 OggStream* OggStreamFactory::CreateStream(OggPage* inOggPage, OggDemuxSourceFilter* inOwningFilter, bool inAllowSeek) {
  46         switch (OggStreamFactory::IdentifyCodec(inOggPage->getPacket(0))) {
  47                 case StreamHeaders::VORBIS:
  48                         return new VorbisStream(inOggPage, inOwningFilter, inAllowSeek);
  49                 case StreamHeaders::SPEEX:
  50                         return new SpeexStream(inOggPage, inOwningFilter, inAllowSeek);
  51                 case StreamHeaders::FLAC:
  52                         return new FLACStream(inOggPage, inOwningFilter, inAllowSeek);
  53                 case StreamHeaders::OGG_FLAC_1_0:
  54                         return new OggFLAC_1_0_Stream(inOggPage, inOwningFilter, inAllowSeek);
  55                 case StreamHeaders::THEORA:
  56                         return new TheoraStream(inOggPage, inOwningFilter, inAllowSeek);
  57                 case StreamHeaders::FFDSHOW_VIDEO:
  58                         return new FFDShowVideoStream(inOggPage, inOwningFilter, inAllowSeek);
  59                 case StreamHeaders::NONE:
  60                 default:
  61                         return NULL;
  62         }
  63 }
  64
  65 StreamHeaders::eCodecType OggStreamFactory::IdentifyCodec(OggPacket* inOggPacket) {
  66         if (strncmp((char*)inOggPacket->packetData(), "\001vorbis", 7) == 0) {
  67                 return StreamHeaders::VORBIS;
  68         } else if (strncmp((char*)inOggPacket->packetData(), "Speex   ", 8) == 0) {
  69                 return StreamHeaders::SPEEX;
  70         } else if ((strncmp((char*)inOggPacket->packetData(), "fLaC", 4)) == 0) {
  71                 return StreamHeaders::FLAC;
  72         } else if ((strncmp((char*)inOggPacket->packetData(), "\177FLAC", 5)) == 0) {
  73                 return StreamHeaders::OGG_FLAC_1_0;
  74         } else if ((strncmp((char*)inOggPacket->packetData(), "\200theora", 7)) == 0) {
  75                 return StreamHeaders::THEORA;
  76         } else if ((strncmp((char*)inOggPacket->packetData(), "\001video\000\000\000", 9)) == 0) {
  77                 return StreamHeaders::FFDSHOW_VIDEO;
  78         }
  79
  80         return StreamHeaders::NONE;
  81
  82 }