char* RTPSink::rtpmapLine() const {
if (rtpPayloadType() >= 96) { // the payload format type is dynamic
char* encodingParamsPart;
if (numChannels() != 1) {
encodingParamsPart = new char[1 + 20 /* max int len */];
sprintf(encodingParamsPart, "/%d", numChannels());
} else {
encodingParamsPart = strDup("");
}
char const* const rtpmapFmt = "a=rtpmap:%d %s/%d%s\r\n";
unsigned rtpmapFmtSize = strlen(rtpmapFmt)
+ 3 /* max char len */ + strlen(rtpPayloadFormatName())
+ 20 /* max int len */ + strlen(encodingParamsPart);
char* rtpmapLine = new char[rtpmapFmtSize];
sprintf(rtpmapLine, rtpmapFmt,
rtpPayloadType(), rtpPayloadFormatName(),
rtpTimestampFrequency(), encodingParamsPart);
delete[] encodingParamsPart;
return rtpmapLine;
} else {
// The payload format is staic, so there's no "a=rtpmap:" line:
return strDup("");
}
}
MPEG4LATMAudioRTPSink
::MPEG4LATMAudioRTPSink(UsageEnvironment& env, Groupsock* RTPgs,
u_int8_t rtpPayloadFormat,
u_int32_t rtpTimestampFrequency,
char const* streamMuxConfigString,
unsigned numChannels,
Boolean allowMultipleFramesPerPacket)
: AudioRTPSink(env, RTPgs, rtpPayloadFormat,
rtpTimestampFrequency, "MP4A-LATM", numChannels),
fStreamMuxConfigString(strDup(streamMuxConfigString)),
fAllowMultipleFramesPerPacket(allowMultipleFramesPerPacket) {
// Set up the "a=fmtp:" SDP line for this stream:
char const* fmtpFmt =
"a=fmtp:%d "
"cpresent=0;config=%s\r\n";
unsigned fmtpFmtSize = strlen(fmtpFmt)
+ 3 /* max char len */
+ strlen(fStreamMuxConfigString);
char* fmtp = new char[fmtpFmtSize];
sprintf(fmtp, fmtpFmt,
rtpPayloadType(),
fStreamMuxConfigString);
fFmtpSDPLine = strDup(fmtp);
delete[] fmtp;
}
char const* AMRAudioRTPSink::auxSDPLine() {
if (fFmtpSDPLine == NULL) {
// Generate a "a=fmtp:" line with "octet-aligned=1"
// (That is the only non-default parameter.)
char buf[100];
sprintf(buf, "a=fmtp:%d octet-align=1\r\n", rtpPayloadType());
delete[] fFmtpSDPLine; fFmtpSDPLine = strDup(buf);
}
return fFmtpSDPLine;
}
char const* H264VideoRTPSink::auxSDPLine() {
liveLogInfo(" H264VideoRTPSink::auxSDPLine \n");
// Generate a new "a=fmtp:" line each time, using our SPS and PPS (if we have them),
// otherwise parameters from our framer source (in case they've changed since the last time that
// we were called):
H264or5VideoStreamFramer* framerSource = NULL;
u_int8_t* vpsDummy = NULL; unsigned vpsDummySize = 0;
u_int8_t* sps = fSPS; unsigned spsSize = fSPSSize;
u_int8_t* pps = fPPS; unsigned ppsSize = fPPSSize;
if (sps == NULL || pps == NULL) {
// We need to get SPS and PPS from our framer source:
if (fOurFragmenter == NULL) return NULL; // we don't yet have a fragmenter (and therefore not a source)
framerSource = (H264or5VideoStreamFramer*)(fOurFragmenter->inputSource());
if (framerSource == NULL) return NULL; // we don't yet have a source
framerSource->getVPSandSPSandPPS(vpsDummy, vpsDummySize, sps, spsSize, pps, ppsSize);
if (sps == NULL || pps == NULL) return NULL; // our source isn't ready
}
// Set up the "a=fmtp:" SDP line for this stream:
u_int8_t* spsWEB = new u_int8_t[spsSize]; // "WEB" means "Without Emulation Bytes"
unsigned spsWEBSize = removeH264or5EmulationBytes(spsWEB, spsSize, sps, spsSize);
if (spsWEBSize < 4) { // Bad SPS size => assume our source isn't ready
delete[] spsWEB;
return NULL;
}
u_int32_t profileLevelId = (spsWEB[1]<<16) | (spsWEB[2]<<8) | spsWEB[3];
delete[] spsWEB;
char* sps_base64 = base64Encode((char*)sps, spsSize);
char* pps_base64 = base64Encode((char*)pps, ppsSize);
char const* fmtpFmt =
"a=fmtp:%d packetization-mode=1"
";profile-level-id=%06X"
";sprop-parameter-sets=%s,%s\r\n";
unsigned fmtpFmtSize = strlen(fmtpFmt)
+ 3 /* max char len */
+ 6 /* 3 bytes in hex */
+ strlen(sps_base64) + strlen(pps_base64);
char* fmtp = new char[fmtpFmtSize];
sprintf(fmtp, fmtpFmt,
rtpPayloadType(),
profileLevelId,
sps_base64, pps_base64);
delete[] sps_base64;
delete[] pps_base64;
delete[] fFmtpSDPLine; fFmtpSDPLine = fmtp;
return fFmtpSDPLine;
}
char const* DVVideoRTPSink::auxSDPLineFromFramer(DVVideoStreamFramer* framerSource) {
char const* const profileName = framerSource->profileName();
if (profileName == NULL) return NULL;
char const* const fmtpSDPFmt = "a=fmtp:%d encode=%s;audio=bundled\r\n";
unsigned fmtpSDPFmtSize = strlen(fmtpSDPFmt)
+ 3 // max payload format code length
+ strlen(profileName);
delete[] fFmtpSDPLine; // if it already exists
fFmtpSDPLine = new char[fmtpSDPFmtSize];
sprintf(fFmtpSDPLine, fmtpSDPFmt, rtpPayloadType(), profileName);
return fFmtpSDPLine;
}
char const *H264VideoRTPSink::auxSDPLine()
{
// Generate a new "a=fmtp:" line each time, using parameters from
// our framer source (in case they've changed since the last time that
// we were called):
if (fOurFragmenter == NULL) return NULL; // we don't yet have a fragmenter (and therefore not a source)
H264VideoStreamFramer *framerSource = (H264VideoStreamFramer *)(fOurFragmenter->inputSource());
if (framerSource == NULL) return NULL; // we don't yet have a source
u_int8_t *sps;
unsigned spsSize;
u_int8_t *pps;
unsigned ppsSize;
framerSource->getSPSandPPS(sps, spsSize, pps, ppsSize);
if (sps == NULL || pps == NULL) return NULL; // our source isn't ready
u_int32_t profile_level_id;
if (spsSize < 4) // sanity check
{
profile_level_id = 0;
}
else
{
profile_level_id = (sps[1] << 16) | (sps[2] << 8) | sps[3]; // profile_idc|constraint_setN_flag|level_idc
}
// Set up the "a=fmtp:" SDP line for this stream:
char *sps_base64 = base64Encode((char *)sps, spsSize);
char *pps_base64 = base64Encode((char *)pps, ppsSize);
char const *fmtpFmt =
"a=fmtp:%d packetization-mode=1"
";profile-level-id=%06X"
";sprop-parameter-sets=%s,%s\r\n";
unsigned fmtpFmtSize = strlen(fmtpFmt)
+ 3 /* max char len */
+ 6 /* 3 bytes in hex */
+ strlen(sps_base64) + strlen(pps_base64);
char *fmtp = new char[fmtpFmtSize];
sprintf(fmtp, fmtpFmt,
rtpPayloadType(),
profile_level_id,
sps_base64, pps_base64);
delete[] sps_base64;
delete[] pps_base64;
delete[] fFmtpSDPLine;
fFmtpSDPLine = fmtp;
return fFmtpSDPLine;
}
MPEG4GenericRTPSink
::MPEG4GenericRTPSink(UsageEnvironment& env, Groupsock* RTPgs,
u_int8_t rtpPayloadFormat,
u_int32_t rtpTimestampFrequency,
char const* sdpMediaTypeString,
char const* mpeg4Mode, char const* configString,
unsigned numChannels)
: MultiFramedRTPSink(env, RTPgs, rtpPayloadFormat,
rtpTimestampFrequency, "MPEG4-GENERIC", numChannels),
fSDPMediaTypeString(strDup(sdpMediaTypeString)),
fMPEG4Mode(strDup(mpeg4Mode)), fConfigString(strDup(configString)) {
// Check whether "mpeg4Mode" is one that we handle:
if (mpeg4Mode == NULL) {
env << "MPEG4GenericRTPSink error: NULL \"mpeg4Mode\" parameter\n";
} else {
// To ease comparison, convert "mpeg4Mode" to lower case:
size_t const len = strlen(mpeg4Mode) + 1;
char* m = new char[len];
Locale l("POSIX");
for (size_t i = 0; i < len; ++i) m[i] = tolower(mpeg4Mode[i]);
if (strcmp(m, "aac-hbr") != 0) {
env << "MPEG4GenericRTPSink error: Unknown \"mpeg4Mode\" parameter: \"" << mpeg4Mode << "\"\n";
}
delete[] m;
}
// Set up the "a=fmtp:" SDP line for this stream:
char const* fmtpFmt =
"a=fmtp:%d "
"streamtype=%d;profile-level-id=1;"
"mode=%s;sizelength=13;indexlength=3;indexdeltalength=3;"
"config=%s\r\n";
unsigned fmtpFmtSize = strlen(fmtpFmt)
+ 3 /* max char len */
+ 3 /* max char len */
+ strlen(fMPEG4Mode)
+ strlen(fConfigString);
char* fmtp = new char[fmtpFmtSize];
sprintf(fmtp, fmtpFmt,
rtpPayloadType(),
strcmp(fSDPMediaTypeString, "video") == 0 ? 4 : 5,
fMPEG4Mode,
fConfigString);
fFmtpSDPLine = strDup(fmtp);
delete[] fmtp;
}
char const* MPEG4ESVideoRTPSink::auxSDPLine() {
// Generate a new "a=fmtp:" line each time, using our own 'configuration' information (if we have it),
// otherwise parameters from our framer source (in case they've changed since the last time that
// we were called):
unsigned configLength = fNumConfigBytes;
unsigned char* config = fConfigBytes;
if (fProfileAndLevelIndication == 0 || config == NULL) {
// We need to get this information from our framer source:
MPEG4VideoStreamFramer* framerSource = (MPEG4VideoStreamFramer*)fSource;
if (framerSource == NULL) return NULL; // we don't yet have a source
fProfileAndLevelIndication = framerSource->profile_and_level_indication();
if (fProfileAndLevelIndication == 0) return NULL; // our source isn't ready
config = framerSource->getConfigBytes(configLength);
if (config == NULL) return NULL; // our source isn't ready
}
char const* fmtpFmt =
"a=fmtp:%d "
"profile-level-id=%d;"
"config=";
unsigned fmtpFmtSize = strlen(fmtpFmt)
+ 3 /* max char len */
+ 3 /* max char len */
+ 2*configLength /* 2*, because each byte prints as 2 chars */
+ 2 /* trailing \r\n */;
char* fmtp = new char[fmtpFmtSize];
sprintf(fmtp, fmtpFmt, rtpPayloadType(), fProfileAndLevelIndication);
char* endPtr = &fmtp[strlen(fmtp)];
for (unsigned i = 0; i < configLength; ++i) {
sprintf(endPtr, "%02X", config[i]);
endPtr += 2;
}
sprintf(endPtr, "\r\n");
delete[] fFmtpSDPLine;
fFmtpSDPLine = strDup(fmtp);
delete[] fmtp;
return fFmtpSDPLine;
}
char const* MPEG4ESVideoRTPSink::auxSDPLine() {
// Generate a new "a=fmtp:" line each time, using parameters from
// our framer source (in case they've changed since the last time that
// we were called):
MPEG4VideoStreamFramer* framerSource = (MPEG4VideoStreamFramer*)fSource;
if (framerSource == NULL) return NULL; // we don't yet have a source
u_int8_t profile_level_id = framerSource->profile_and_level_indication();
if (profile_level_id == 0) return NULL; // our source isn't ready
unsigned configLength;
unsigned char* config = framerSource->getConfigBytes(configLength);
if (config == NULL) return NULL; // our source isn't ready
char const* fmtpFmt =
"a=fmtp:%d "
"profile-level-id=%d;"
"config=";
unsigned fmtpFmtSize = strlen(fmtpFmt)
+ 3 /* max char len */
+ 3 /* max char len */
+ 2*configLength /* 2*, because each byte prints as 2 chars */
+ 2 /* trailing \r\n */;
char* fmtp = new char[fmtpFmtSize];
sprintf(fmtp, fmtpFmt, rtpPayloadType(), profile_level_id);
char* endPtr = &fmtp[strlen(fmtp)];
for (unsigned i = 0; i < configLength; ++i) {
sprintf(endPtr, "%02X", config[i]);
endPtr += 2;
}
sprintf(endPtr, "\r\n");
delete[] fAuxSDPLine;
fAuxSDPLine = strDup(fmtp);
delete[] fmtp;
return fAuxSDPLine;
}
char const* H265VideoRTPSink::auxSDPLine() {
// Generate a new "a=fmtp:" line each time, using our VPS, SPS and PPS (if we have them),
// otherwise parameters from our framer source (in case they've changed since the last time that
// we were called):
H264or5VideoStreamFramer* framerSource = NULL;
u_int8_t* vps = fVPS; unsigned vpsSize = fVPSSize;
u_int8_t* sps = fSPS; unsigned spsSize = fSPSSize;
u_int8_t* pps = fPPS; unsigned ppsSize = fPPSSize;
if (vps == NULL || sps == NULL || pps == NULL) {
// We need to get VPS, SPS and PPS from our framer source:
if (fOurFragmenter == NULL) return NULL; // we don't yet have a fragmenter (and therefore not a source)
framerSource = (H264or5VideoStreamFramer*)(fOurFragmenter->inputSource());
if (framerSource == NULL) return NULL; // we don't yet have a source
framerSource->getVPSandSPSandPPS(vps, vpsSize, sps, spsSize, pps, ppsSize);
if (vps == NULL || sps == NULL || pps == NULL) {
return NULL; // our source isn't ready
}
}
// Set up the "a=fmtp:" SDP line for this stream.
u_int8_t* vpsWEB = new u_int8_t[vpsSize]; // "WEB" means "Without Emulation Bytes"
unsigned vpsWEBSize = removeH264or5EmulationBytes(vpsWEB, vpsSize, vps, vpsSize);
if (vpsWEBSize < 6/*'profile_tier_level' offset*/ + 12/*num 'profile_tier_level' bytes*/) {
// Bad VPS size => assume our source isn't ready
delete[] vpsWEB;
return NULL;
}
u_int8_t const* profileTierLevelHeaderBytes = &vpsWEB[6];
unsigned profileSpace = profileTierLevelHeaderBytes[0]>>6; // general_profile_space
unsigned profileId = profileTierLevelHeaderBytes[0]&0x1F; // general_profile_idc
unsigned tierFlag = (profileTierLevelHeaderBytes[0]>>5)&0x1; // general_tier_flag
unsigned levelId = profileTierLevelHeaderBytes[11]; // general_level_idc
u_int8_t const* interop_constraints = &profileTierLevelHeaderBytes[5];
char interopConstraintsStr[100];
sprintf(interopConstraintsStr, "%02X%02X%02X%02X%02X%02X",
interop_constraints[0], interop_constraints[1], interop_constraints[2],
interop_constraints[3], interop_constraints[4], interop_constraints[5]);
delete[] vpsWEB;
char* sprop_vps = base64Encode((char*)vps, vpsSize);
char* sprop_sps = base64Encode((char*)sps, spsSize);
char* sprop_pps = base64Encode((char*)pps, ppsSize);
char const* fmtpFmt =
"a=fmtp:%d profile-space=%u"
";profile-id=%u"
";tier-flag=%u"
";level-id=%u"
";interop-constraints=%s"
";sprop-vps=%s"
";sprop-sps=%s"
";sprop-pps=%s\r\n";
unsigned fmtpFmtSize = strlen(fmtpFmt)
+ 3 /* max num chars: rtpPayloadType */ + 20 /* max num chars: profile_space */
+ 20 /* max num chars: profile_id */
+ 20 /* max num chars: tier_flag */
+ 20 /* max num chars: level_id */
+ strlen(interopConstraintsStr)
+ strlen(sprop_vps)
+ strlen(sprop_sps)
+ strlen(sprop_pps);
char* fmtp = new char[fmtpFmtSize];
sprintf(fmtp, fmtpFmt,
rtpPayloadType(), profileSpace,
profileId,
tierFlag,
levelId,
interopConstraintsStr,
sprop_vps,
sprop_sps,
sprop_pps);
delete[] sprop_vps;
delete[] sprop_sps;
delete[] sprop_pps;
delete[] fFmtpSDPLine; fFmtpSDPLine = fmtp;
return fFmtpSDPLine;
}