SpeexStream.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 "speexstream.h"
00033 
00034 SpeexStream::SpeexStream(OggPage* inBOSPage, OggDemuxSourceFilter* inOwningFilter, bool inAllowSeek)
00035         :       OggStream(inBOSPage, inOwningFilter, inAllowSeek)
00036         ,       mSpeexFormatBlock(NULL)
00037 {
00038         InitCodec(inBOSPage->getStampedPacket(0));
00039 }
00040 
00041 SpeexStream::~SpeexStream(void)
00042 {
00043         delete mSpeexFormatBlock;
00044 }
00045 
00046 bool SpeexStream::InitCodec(StampedOggPacket* inOggPacket) {
00047         //Can probably abstract this out of here too !
00048         mCodecHeaders = new StreamHeaders;
00049         mCodecHeaders->mCodecType = StreamHeaders::SPEEX;
00050         mCodecHeaders->addPacket((StampedOggPacket*)inOggPacket->clone());
00051         //What to do with commment fields ??
00052         mNumHeadersNeeded = 1;
00053         return true;
00054 }
00055 
00056 wstring SpeexStream::getPinName() {
00057         wstring locName = L"Speex Out";
00058         return locName;
00059 }
00060 
00061 bool SpeexStream::createFormatBlock() {
00062         mSpeexFormatBlock = new sSpeexFormatBlock;
00063         //Fix the format block data... use header version and other version.
00064         mSpeexFormatBlock->speexVersion = iLE_Math::charArrToULong(mCodecHeaders->getPacket(0)->packetData() + 28);
00065         mSpeexFormatBlock->numChannels = iLE_Math::charArrToULong(mCodecHeaders->getPacket(0)->packetData() + 48);
00066         mSpeexFormatBlock->samplesPerSec = iLE_Math::charArrToULong(mCodecHeaders->getPacket(0)->packetData() + 36);
00067         return true;
00068 }
00069 BYTE* SpeexStream::getFormatBlock() {
00070 
00071         return (BYTE*)mSpeexFormatBlock;
00072 
00073 
00074 }
00075 
00076 void SpeexStream::setLastEndGranPos(__int64 inPos) {
00077         
00078         mLastEndGranulePos = (inPos * (__int64)mSpeexFormatBlock->samplesPerSec)/ UNITS;
00079         //osDebug<<"Speex sets End Gran : "<<mLastEndGranulePos<<endl;
00080 }
00081 unsigned long SpeexStream::getFormatBlockSize() {
00082         //Do something
00083         return sizeof(sSpeexFormatBlock);
00084 }
00085 GUID SpeexStream::getFormatGUID() {
00086         return FORMAT_Speex;
00087 }
00088 GUID SpeexStream::getSubtypeGUID() {
00089         return MEDIASUBTYPE_Speex;
00090 }
00091 
00092 GUID SpeexStream::getMajorTypeGUID() {
00093         return MEDIATYPE_Audio;
00094 }
00095 
00096 LONGLONG SpeexStream::getCurrentPos() {
00097         return (mLastEndGranulePos * UNITS) / mSpeexFormatBlock->samplesPerSec;
00098 }
00099 
00100 unsigned long SpeexStream::getNumBuffers() {
00101         return SPEEX_NUM_BUFFERS;
00102 }
00103 unsigned long SpeexStream::getBufferSize() {
00104         return SPEEX_BUFFER_SIZE;
00105 }

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