MpCodecSubInfo* MpCodecFactory::searchByMIME(const UtlString& mime,
int sampleRate,
int numChannels) const
{
// Create a lower case copy of MIME-subtype string.
UtlString mime_copy(mime);
mime_copy.toLower();
// Create iterator to list all codecs with given MIME subtype.
UtlHashBagIterator iter(mCodecsInfo, &mime_copy);
MpCodecSubInfo* pInfo;
while ((pInfo = (MpCodecSubInfo*)iter()))
{
if ((int)(pInfo->getCodecInfo()->sampleRate) == sampleRate &&
(int)(pInfo->getCodecInfo()->numChannels) == numChannels)
{
return pInfo;
}
}
return NULL;
/*
// Create a lower case copy of MIME-subtype string.
UtlString mime_copy(mime);
mime_copy.toLower();
// Perform search
return (MpCodecSubInfo*)mCodecsInfo.find(&mime_copy);
*/
}
OsStatus MpCodecFactory::createEncoder(const UtlString &mime,
const UtlString &fmtp,
int sampleRate,
int numChannels,
int payloadType,
MpEncoderBase*& rpEncoder) const
{
MpCodecSubInfo* codec = searchByMIME(mime, sampleRate, numChannels);
if (codec)
{
rpEncoder = new MpEncoderBase(payloadType,
*codec->getCodecCall(),
*codec->getCodecInfo(),
fmtp);
}
else
{
OsSysLog::add(FAC_MP, PRI_ERR,
"MpCodecFactory::createEncoder unknown codec type "
"%s, fmtp=%s"
"payloadType = %d",
mime.data(), fmtp.data(), payloadType);
rpEncoder=NULL;
}
if (NULL != rpEncoder)
{
return OS_SUCCESS;
}
return OS_INVALID_ARGUMENT;
}
void MpCodecFactory::addCodecsToList(SdpCodecList &codecList) const
{
UtlHashBagIterator iter(mCodecsInfo);
MpCodecSubInfo* pCodec;
while ((pCodec = (MpCodecSubInfo*)iter()))
{
const MppCodecInfoV1_1 *pCodecInfo = pCodec->getCodecInfo();
if (pCodecInfo->fmtpsNum == 0)
{
SdpCodec::SdpCodecTypes codecType;
OsStatus res = SdpDefaultCodecFactory::getCodecType(pCodecInfo->mimeSubtype,
pCodecInfo->sampleRate,
pCodecInfo->numChannels,
"",
codecType);
OsSysLog::add(FAC_MP, PRI_DEBUG,
"Codec added to list: [%3d]:%s/%d/%d fmtp=\"%s\"\n",
res==OS_SUCCESS?codecType:-1,
pCodecInfo->mimeSubtype, pCodecInfo->sampleRate, pCodecInfo->numChannels,
"");
if (res == OS_SUCCESS)
{
codecList.addCodec(SdpDefaultCodecFactory::getCodec(codecType));
}
}
else
{
for (unsigned fmtpIdx=0; fmtpIdx<pCodecInfo->fmtpsNum; fmtpIdx++)
{
SdpCodec::SdpCodecTypes codecType;
OsStatus res = SdpDefaultCodecFactory::getCodecType(pCodecInfo->mimeSubtype,
pCodecInfo->sampleRate,
pCodecInfo->numChannels,
pCodecInfo->fmtps[fmtpIdx],
codecType);
OsSysLog::add(FAC_MP, PRI_DEBUG,
"Codec added to list: [%3d]:%s/%d/%d fmtp=\"%s\"\n",
res==OS_SUCCESS?codecType:-1,
pCodecInfo->mimeSubtype, pCodecInfo->sampleRate, pCodecInfo->numChannels,
pCodecInfo->fmtps[fmtpIdx]);
if (res == OS_SUCCESS)
{
codecList.addCodec(SdpDefaultCodecFactory::getCodec(codecType));
}
}
}
}
}
MpCodecSubInfo* MpCodecFactory::searchByMIME(const UtlString& mime,
int sampleRate,
int numChannels) const
{
// Create a lower case copy of MIME-subtype string.
UtlString mime_copy(mime);
mime_copy.toLower();
int _sampleRate = sampleRate;
if(mime == "G722" && sampleRate == 8000)
{
// From RFC 3551 s4.5.2:
//
// Even though the actual sampling rate for G.722 audio is 16,000 Hz,
// the RTP clock rate for the G722 payload format is 8,000 Hz because
// that value was erroneously assigned in RFC 1890 and must remain
// unchanged for backward compatibility. The octet rate or sample-pair
// rate is 8,000 Hz.
//
// Therefore, when the codec is G722 and we see 8000 in RTP, we need
// to look for the standard 16000 codec implementation.
//
// This is often described as a hack, but it is a hack specified by the RFC
// and we have to live with it. Some implementations may not implement
// the hack correctly and may not interoperate.
_sampleRate = 16000;
}
// Create iterator to list all codecs with given MIME subtype.
UtlHashBagIterator iter(mCodecsInfo, &mime_copy);
MpCodecSubInfo* pInfo;
while ((pInfo = (MpCodecSubInfo*)iter()))
{
if (pInfo->getCodecInfo()->sampleRate == _sampleRate &&
pInfo->getCodecInfo()->numChannels == numChannels)
{
return pInfo;
}
}
return NULL;
/*
// Create a lower case copy of MIME-subtype string.
UtlString mime_copy(mime);
mime_copy.toLower();
// Perform search
return (MpCodecSubInfo*)mCodecsInfo.find(&mime_copy);
*/
}
void MpCodecFactory::updateCodecInfoCache() const
{
// First delete old data.
delete[] mpCodecInfoCache;
// Allocate memory for new array.
mCachedCodecInfoNum = mCodecsInfo.entries();
mpCodecInfoCache = new const MppCodecInfoV1_1*[mCachedCodecInfoNum];
// Fill array with data.
UtlHashBagIterator iter(mCodecsInfo);
for (unsigned i=0; i<mCachedCodecInfoNum; i++)
{
MpCodecSubInfo* pInfo = (MpCodecSubInfo*)iter();
mpCodecInfoCache[i] = pInfo->getCodecInfo();
}
// Cache successfully updated.
mCodecInfoCacheValid = TRUE;
}