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vdr-plugin-satip/rtsp.c

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/*
* rtsp.c: SAT>IP plugin for the Video Disk Recorder
*
* See the README file for copyright information and how to reach the author.
*
*/
#include "common.h"
#include "rtsp.h"
cSatipRtsp::cSatipRtsp(cSatipTunerIf &tunerP)
: tunerM(&tunerP),
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tunerIdM(tunerP.GetId()),
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handleM(curl_easy_init()),
headerListM(NULL)
{
if (handleM) {
CURLcode res = CURLE_OK;
#ifdef DEBUG
// Verbose output
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_VERBOSE, 1L);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_DEBUGFUNCTION, cSatipRtsp::DebugCallback);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_DEBUGDATA, this);
#endif
// No progress meter and no signaling
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_NOPROGRESS, 1L);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_NOSIGNAL, 1L);
// Set timeouts
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_TIMEOUT_MS, (long)eConnectTimeoutMs);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_CONNECTTIMEOUT_MS, (long)eConnectTimeoutMs);
// Set user-agent
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_USERAGENT, *cString::sprintf("vdr-%s/%s (device %d)", PLUGIN_NAME_I18N, VERSION, tunerIdM));
}
}
cSatipRtsp::~cSatipRtsp()
{
if (handleM) {
// Cleanup curl stuff
if (headerListM) {
curl_slist_free_all(headerListM);
headerListM = NULL;
}
curl_easy_cleanup(handleM);
handleM = NULL;
}
}
size_t cSatipRtsp::HeaderCallback(void *ptrP, size_t sizeP, size_t nmembP, void *dataP)
{
cSatipRtsp *obj = reinterpret_cast<cSatipRtsp *>(dataP);
size_t len = sizeP * nmembP;
//debug("cSatipRtsp::%s(%zu)", __FUNCTION__, len);
char *s, *p = (char *)ptrP;
char *r = strtok_r(p, "\r\n", &s);
while (obj && obj->tunerM && r) {
//debug("cSatipRtsp::%s(%zu): %s", __FUNCTION__, len, r);
r = skipspace(r);
if (strstr(r, "com.ses.streamID")) {
int streamid = -1;
if (sscanf(r, "com.ses.streamID:%11d", &streamid) == 1)
obj->tunerM->SetStreamId(streamid);
}
else if (strstr(r, "Session:")) {
int timeout = -1;
char *session = NULL;
if (sscanf(r, "Session:%m[^;];timeout=%11d", &session, &timeout) == 2)
obj->tunerM->SetSessionTimeout(skipspace(session), timeout * 1000);
else if (sscanf(r, "Session:%m[^;]", &session) == 1)
obj->tunerM->SetSessionTimeout(skipspace(session), -1);
FREE_POINTER(session);
}
r = strtok_r(NULL, "\r\n", &s);
}
return len;
}
size_t cSatipRtsp::WriteCallback(void *ptrP, size_t sizeP, size_t nmembP, void *dataP)
{
cSatipRtsp *obj = reinterpret_cast<cSatipRtsp *>(dataP);
size_t len = sizeP * nmembP;
//debug("cSatipRtsp::%s(%zu)", __FUNCTION__, len);
if (obj && obj->tunerM && (len > 0)) {
char *data = strndup((char*)ptrP, len);
obj->tunerM->ParseReceptionParameters(data);
FREE_POINTER(data);
}
return len;
}
int cSatipRtsp::DebugCallback(CURL *handleP, curl_infotype typeP, char *dataP, size_t sizeP, void *userPtrP)
{
cSatipRtsp *obj = reinterpret_cast<cSatipRtsp *>(userPtrP);
if (obj && obj->tunerM) {
switch (typeP) {
case CURLINFO_TEXT:
debug("cSatipTuner::%s(%d): RTSP INFO %.*s", __FUNCTION__, obj->tunerM->GetId(), (int)sizeP, dataP);
break;
case CURLINFO_HEADER_IN:
debug("cSatipTuner::%s(%d): RTSP HEAD <<< %.*s", __FUNCTION__, obj->tunerM->GetId(), (int)sizeP, dataP);
break;
case CURLINFO_HEADER_OUT:
debug("cSatipTuner::%s(%d): RTSP HEAD >>>\n%.*s", __FUNCTION__, obj->tunerM->GetId(), (int)sizeP, dataP);
break;
case CURLINFO_DATA_IN:
debug("cSatipTuner::%s(%d): RTSP DATA <<< %.*s", __FUNCTION__, obj->tunerM->GetId(), (int)sizeP, dataP);
break;
case CURLINFO_DATA_OUT:
debug("cSatipTuner::%s(%d): RTSP DATA >>>\n%.*s", __FUNCTION__, obj->tunerM->GetId(), (int)sizeP, dataP);
break;
default:
break;
}
}
return 0;
}
cString cSatipRtsp::RtspUnescapeString(const char *strP)
{
debug("cSatipRtsp::%s(%d): str=%s", __FUNCTION__, tunerIdM, strP);
if (handleM) {
char *p = curl_easy_unescape(handleM, strP, 0, NULL);
cString s = p;
curl_free(p);
return s;
}
return cString(strP);
}
bool cSatipRtsp::Options(const char *uriP)
{
debug("cSatipRtsp::%s(%d): uri=%s", __FUNCTION__, tunerIdM, uriP);
if (handleM && !isempty(uriP)) {
CURLcode res = CURLE_OK;
if (!strstr(uriP, "?"))
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_URL, uriP);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_STREAM_URI, uriP);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_REQUEST, (long)CURL_RTSPREQ_OPTIONS);
SATIP_CURL_EASY_PERFORM(handleM);
return ValidateLatestResponse();
}
return false;
}
bool cSatipRtsp::Setup(const char *uriP, int rtpPortP, int rtcpPortP)
{
debug("cSatipRtsp::%s(%d): uri=%s rtp=%d rtcp=%d", __FUNCTION__, tunerIdM, uriP, rtpPortP, rtcpPortP);
if (handleM && !isempty(uriP)) {
CURLcode res = CURLE_OK;
cString transport = cString::sprintf("RTP/AVP;unicast;client_port=%d-%d", rtpPortP, rtcpPortP);
// Setup media stream
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_STREAM_URI, uriP);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_TRANSPORT, *transport);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_REQUEST, (long)CURL_RTSPREQ_SETUP);
// Set header callback for catching the session and timeout
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_HEADERFUNCTION, cSatipRtsp::HeaderCallback);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_WRITEHEADER, this);
SATIP_CURL_EASY_PERFORM(handleM);
// Session id is now known - disable header parsing
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_HEADERFUNCTION, NULL);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_WRITEHEADER, NULL);
return ValidateLatestResponse();
}
return false;
}
bool cSatipRtsp::SetSession(const char *sessionP)
{
debug("cSatipRtsp::%s(%d): session=%s", __FUNCTION__, tunerIdM, sessionP);
if (handleM) {
CURLcode res = CURLE_OK;
debug("cSatipRtsp::%s(%d): session id quirk enabled", __FUNCTION__, tunerIdM);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_SESSION_ID, sessionP);
}
return true;
}
bool cSatipRtsp::Describe(const char *uriP)
{
debug("cSatipRtsp::%s(%d): uri=%s", __FUNCTION__, tunerIdM, uriP);
if (handleM && !isempty(uriP)) {
CURLcode res = CURLE_OK;
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_STREAM_URI, uriP);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_REQUEST, (long)CURL_RTSPREQ_DESCRIBE);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_WRITEFUNCTION, cSatipRtsp::WriteCallback);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_WRITEDATA, this);
SATIP_CURL_EASY_PERFORM(handleM);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_WRITEFUNCTION, NULL);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_WRITEDATA, NULL);
return ValidateLatestResponse();
}
return false;
}
bool cSatipRtsp::Play(const char *uriP)
{
debug("cSatipRtsp::%s(%d): uri=%s", __FUNCTION__, tunerIdM, uriP);
if (handleM && !isempty(uriP)) {
CURLcode res = CURLE_OK;
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_STREAM_URI, uriP);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_REQUEST, (long)CURL_RTSPREQ_PLAY);
SATIP_CURL_EASY_PERFORM(handleM);
return ValidateLatestResponse();
}
return false;
}
bool cSatipRtsp::Teardown(const char *uriP)
{
debug("cSatipRtsp::%s(%d): uri=%s", __FUNCTION__, tunerIdM, uriP);
if (handleM && !isempty(uriP)) {
CURLcode res = CURLE_OK;
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_STREAM_URI, uriP);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_REQUEST, (long)CURL_RTSPREQ_TEARDOWN);
SATIP_CURL_EASY_PERFORM(handleM);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_CLIENT_CSEQ, 1L);
SATIP_CURL_EASY_SETOPT(handleM, CURLOPT_RTSP_SESSION_ID, NULL);
return ValidateLatestResponse();
}
return false;
}
bool cSatipRtsp::ValidateLatestResponse(void)
{
bool result = false;
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if (handleM) {
long rc = 0;
CURLcode res = CURLE_OK;
SATIP_CURL_EASY_GETINFO(handleM, CURLINFO_RESPONSE_CODE, &rc);
if (rc == 200)
result = true;
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else if (rc != 0) {
char *url = NULL;
SATIP_CURL_EASY_GETINFO(handleM, CURLINFO_EFFECTIVE_URL, &url);
error("Detected invalid status code %ld: %s [device %d]", rc, url, tunerIdM);
}
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}
debug("cSatipRtsp::%s(%d): %s", __FUNCTION__, tunerIdM, result ? "ok" : "failed");
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return result;
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}