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Fix curl cameras. PrimeCapture and PreCapture and PostCapture need to return 1. Also need to populate the packet and video stream.

This commit is contained in:
Isaac Connor 2021-10-07 12:35:56 -04:00
parent 505f3d1b32
commit 2dfbc013cb
1 changed files with 131 additions and 95 deletions
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192
src/zm_curl_camera.cpp
View File

@ -73,19 +73,35 @@ void bind_libcurl_symbols() {
*(void**) (&curl_easy_cleanup_f) = dlsym(curl_lib, "curl_easy_cleanup");
}
cURLCamera::cURLCamera( const Monitor* monitor, const std::string &p_path, const std::string &p_user, const std::string &p_pass, unsigned int p_width, unsigned int p_height, int p_colours, int p_brightness, int p_contrast, int p_hue, int p_colour, bool p_capture, bool p_record_audio ) :
Camera( monitor, CURL_SRC, p_width, p_height, p_colours, ZM_SUBPIX_ORDER_DEFAULT_FOR_COLOUR(p_colours), p_brightness, p_contrast, p_hue, p_colour, p_capture, p_record_audio ),
mPath( p_path ), mUser( p_user ), mPass ( p_pass ), bTerminate( false ), bReset( false ), mode ( MODE_UNSET )
cURLCamera::cURLCamera(
const Monitor* monitor,
const std::string &p_path,
const std::string &p_user,
const std::string &p_pass,
unsigned int p_width,
unsigned int p_height,
int p_colours,
int p_brightness,
int p_contrast,
int p_hue,
int p_colour,
bool p_capture,
bool p_record_audio) :
Camera(monitor, CURL_SRC, p_width, p_height, p_colours, ZM_SUBPIX_ORDER_DEFAULT_FOR_COLOUR(p_colours), p_brightness, p_contrast, p_hue, p_colour, p_capture, p_record_audio),
mPath(p_path),
mUser(p_user),
mPass(p_pass),
bTerminate(false),
bReset(false),
mode(MODE_UNSET)
{
if ( capture ) {
if (capture) {
Initialise();
}
}
cURLCamera::~cURLCamera() {
if ( capture ) {
if (capture) {
Terminate();
}
}
@ -99,36 +115,36 @@ void cURLCamera::Initialise() {
bind_libcurl_symbols();
/* cURL initialization */
CURLcode cRet = (*curl_global_init_f)(CURL_GLOBAL_ALL);
if(cRet != CURLE_OK) {
if (cRet != CURLE_OK) {
Error("libcurl initialization failed: %s", (*curl_easy_strerror_f)(cRet));
dlclose(curl_lib);
return;
}
Debug(2,"libcurl version: %s", (*curl_version_f)());
Debug(2, "libcurl version: %s", (*curl_version_f)());
/* Create the shared data mutex */
int nRet = pthread_mutex_init(&shareddata_mutex, nullptr);
if(nRet != 0) {
if (nRet != 0) {
Error("Shared data mutex creation failed: %s",strerror(nRet));
return;
}
/* Create the data available condition variable */
nRet = pthread_cond_init(&data_available_cond, nullptr);
if(nRet != 0) {
if (nRet != 0) {
Error("Data available condition variable creation failed: %s",strerror(nRet));
return;
}
/* Create the request complete condition variable */
nRet = pthread_cond_init(&request_complete_cond, nullptr);
if(nRet != 0) {
if (nRet != 0) {
Error("Request complete condition variable creation failed: %s",strerror(nRet));
return;
}
/* Create the thread */
nRet = pthread_create(&thread, nullptr, thread_func_dispatcher, this);
if(nRet != 0) {
if (nRet != 0) {
Error("Thread creation failed: %s",strerror(nRet));
return;
}
@ -151,18 +167,19 @@ void cURLCamera::Terminate() {
/* cURL cleanup */
(*curl_global_cleanup_f)();
if(curl_lib)
if (curl_lib)
dlclose(curl_lib);
}
int cURLCamera::PrimeCapture() {
getVideoStream();
//Info( "Priming capture from %s", mPath.c_str() );
return 0;
return 1;
}
int cURLCamera::PreCapture() {
// Nothing to do here
return( 0 );
// Nothing to do here
return 1;
}
int cURLCamera::Capture(std::shared_ptr<ZMPacket> &zm_packet) {
@ -178,10 +195,9 @@ int cURLCamera::Capture(std::shared_ptr<ZMPacket> &zm_packet) {
/* Grab the mutex to ensure exclusive access to the shared data */
lock();
while ( !frameComplete ) {
while (!frameComplete) {
/* If the work thread did a reset, reset our local variables */
if ( bReset ) {
if (bReset) {
SubHeadersParsingComplete = false;
frame_content_length = 0;
frame_content_type.clear();
@ -189,25 +205,25 @@ int cURLCamera::Capture(std::shared_ptr<ZMPacket> &zm_packet) {
bReset = false;
}
if ( mode == MODE_UNSET ) {
if (mode == MODE_UNSET) {
/* Don't have a mode yet. Sleep while waiting for data */
nRet = pthread_cond_wait(&data_available_cond,&shareddata_mutex);
if ( nRet != 0 ) {
if (nRet != 0) {
Error("Failed waiting for available data condition variable: %s",strerror(nRet));
return -1;
}
}
if ( mode == MODE_STREAM ) {
if (mode == MODE_STREAM) {
/* Subheader parsing */
while( !SubHeadersParsingComplete && !need_more_data ) {
while (!SubHeadersParsingComplete && !need_more_data) {
size_t crlf_start, crlf_end, crlf_size;
std::string subheader;
/* Check if the buffer contains something */
if ( databuffer.empty() ) {
if (databuffer.empty()) {
/* Empty buffer, wait for data */
need_more_data = true;
break;
@ -215,14 +231,14 @@ int cURLCamera::Capture(std::shared_ptr<ZMPacket> &zm_packet) {
/* Find crlf start */
crlf_start = memcspn(reinterpret_cast<const char *>(databuffer.head()),"\r\n",databuffer.size());
if ( crlf_start == databuffer.size() ) {
if (crlf_start == databuffer.size()) {
/* Not found, wait for more data */
need_more_data = true;
break;
}
/* See if we have enough data for determining crlf length */
if ( databuffer.size() < crlf_start+5 ) {
if (databuffer.size() < crlf_start+5) {
/* Need more data */
need_more_data = true;
break;
@ -233,18 +249,22 @@ int cURLCamera::Capture(std::shared_ptr<ZMPacket> &zm_packet) {
crlf_size = (crlf_start + crlf_end) - crlf_start;
/* Is this the end of a previous stream? (This is just before the boundary) */
if ( crlf_start == 0 ) {
if (crlf_start == 0) {
databuffer.consume(crlf_size);
continue;
}
/* Check for invalid CRLF size */
if ( crlf_size > 4 ) {
if (crlf_size > 4) {
Error("Invalid CRLF length");
}
/* Check if the crlf is \n\n or \r\n\r\n (marks end of headers, this is the last header) */
if( (crlf_size == 2 && memcmp(((const char*)databuffer.head())+crlf_start,"\n\n",2) == 0) || (crlf_size == 4 && memcmp(((const char*)databuffer.head())+crlf_start,"\r\n\r\n",4) == 0) ) {
if (
(crlf_size == 2 && memcmp(((const char*)databuffer.head())+crlf_start,"\n\n",2) == 0)
||
(crlf_size == 4 && memcmp(((const char*)databuffer.head())+crlf_start,"\r\n\r\n",4) == 0)
) {
/* This is the last header */
SubHeadersParsingComplete = true;
}
@ -255,48 +275,56 @@ int cURLCamera::Capture(std::shared_ptr<ZMPacket> &zm_packet) {
/* Advance the buffer past this one */
databuffer.consume(crlf_start+crlf_size);
Debug(7,"Got subheader: %s",subheader.c_str());
Debug(7, "Got subheader: %s",subheader.c_str());
/* Find where the data in this header starts */
size_t subheader_data_start = subheader.rfind(' ');
if ( subheader_data_start == std::string::npos ) {
if (subheader_data_start == std::string::npos) {
subheader_data_start = subheader.find(':');
}
/* Extract the data into a string */
std::string subheader_data = subheader.substr(subheader_data_start+1, std::string::npos);
Debug(8,"Got subheader data: %s",subheader_data.c_str());
Debug(8, "Got subheader data: %s", subheader_data.c_str());
/* Check the header */
if(strncasecmp(subheader.c_str(),content_length_match,content_length_match_len) == 0) {
if (strncasecmp(subheader.c_str(), content_length_match, content_length_match_len) == 0) {
/* Found the content-length header */
frame_content_length = atoi(subheader_data.c_str());
Debug(6,"Got content-length subheader: %d",frame_content_length);
} else if(strncasecmp(subheader.c_str(),content_type_match,content_type_match_len) == 0) {
} else if (strncasecmp(subheader.c_str(), content_type_match, content_type_match_len) == 0) {
/* Found the content-type header */
frame_content_type = subheader_data;
Debug(6,"Got content-type subheader: %s",frame_content_type.c_str());
Debug(6,"Got content-type subheader: %s", frame_content_type.c_str());
}
}
/* Attempt to extract the frame */
if(!need_more_data) {
if(!SubHeadersParsingComplete) {
if (!need_more_data) {
if (!SubHeadersParsingComplete) {
/* We haven't parsed all headers yet */
need_more_data = true;
} else if ( ! frame_content_length ) {
} else if (!frame_content_length) {
/* Invalid frame */
Error("Invalid frame: invalid content length");
} else if ( frame_content_type != "image/jpeg" ) {
} else if (frame_content_type != "image/jpeg") {
/* Unsupported frame type */
Error("Unsupported frame: %s",frame_content_type.c_str());
} else if(frame_content_length > databuffer.size()) {
Error("Unsupported frame: %s", frame_content_type.c_str());
} else if (frame_content_length > databuffer.size()) {
/* Incomplete frame, wait for more data */
need_more_data = true;
} else {
/* All good. decode the image */
if (!zm_packet->image) {
Debug(4, "Allocating image");
zm_packet->image = new Image(width, height, colours, subpixelorder);
}
zm_packet->keyframe = 1;
zm_packet->codec_type = AVMEDIA_TYPE_VIDEO;
zm_packet->packet.stream_index = mVideoStreamId;
zm_packet->stream = mVideoStream;
zm_packet->image->DecodeJpeg(databuffer.extract(frame_content_length), frame_content_length, colours, subpixelorder);
frameComplete = true;
}
@ -317,6 +345,14 @@ int cURLCamera::Capture(std::shared_ptr<ZMPacket> &zm_packet) {
if (!single_offsets.empty()) {
if ((single_offsets.front() > 0) && (databuffer.size() >= single_offsets.front())) {
/* Extract frame */
if (!zm_packet->image) {
Debug(4, "Allocating image");
zm_packet->image = new Image(width, height, colours, subpixelorder);
}
zm_packet->keyframe = 1;
zm_packet->codec_type = AVMEDIA_TYPE_VIDEO;
zm_packet->packet.stream_index = mVideoStreamId;
zm_packet->stream = mVideoStream;
zm_packet->image->DecodeJpeg(databuffer.extract(single_offsets.front()), single_offsets.front(), colours, subpixelorder);
single_offsets.pop_front();
frameComplete = true;
@ -345,15 +381,15 @@ int cURLCamera::Capture(std::shared_ptr<ZMPacket> &zm_packet) {
/* Release the mutex */
unlock();
if(!frameComplete)
if (!frameComplete)
return 0;
return 1;
}
int cURLCamera::PostCapture() {
// Nothing to do here
return( 0 );
// Nothing to do here
return 1;
}
size_t cURLCamera::data_callback(void *buffer, size_t size, size_t nmemb, void *userdata) {
@ -364,7 +400,7 @@ size_t cURLCamera::data_callback(void *buffer, size_t size, size_t nmemb, void *
/* Signal data available */
int nRet = pthread_cond_signal(&data_available_cond);
if ( nRet != 0 ) {
if (nRet != 0) {
Error("Failed signaling data available condition variable: %s",strerror(nRet));
unlock();
return -16;
@ -380,17 +416,17 @@ size_t cURLCamera::header_callback( void *buffer, size_t size, size_t nmemb, voi
std::string header;
header.assign((const char*)buffer, size*nmemb);
Debug(4,"Got header: %s",header.c_str());
Debug(4, "Got header: %s", header.c_str());
/* Check Content-Type header */
if(strncasecmp(header.c_str(),content_type_match,content_type_match_len) == 0) {
if (strncasecmp(header.c_str(),content_type_match,content_type_match_len) == 0) {
size_t pos = header.find(';');
if(pos != std::string::npos) {
if (pos != std::string::npos) {
header.erase(pos, std::string::npos);
}
pos = header.rfind(' ');
if(pos == std::string::npos) {
if (pos == std::string::npos) {
pos = header.find(':');
}
@ -401,11 +437,11 @@ size_t cURLCamera::header_callback( void *buffer, size_t size, size_t nmemb, voi
const char* multipart_match = "multipart/x-mixed-replace";
const char* image_jpeg_match = "image/jpeg";
if(strncasecmp(content_type.c_str(),multipart_match,strlen(multipart_match)) == 0) {
Debug(7,"Content type matched as multipart/x-mixed-replace");
if (strncasecmp(content_type.c_str(),multipart_match,strlen(multipart_match)) == 0) {
Debug(7, "Content type matched as multipart/x-mixed-replace");
mode = MODE_STREAM;
} else if(strncasecmp(content_type.c_str(),image_jpeg_match,strlen(image_jpeg_match)) == 0) {
Debug(7,"Content type matched as image/jpeg");
} else if (strncasecmp(content_type.c_str(),image_jpeg_match,strlen(image_jpeg_match)) == 0) {
Debug(7, "Content type matched as image/jpeg");
mode = MODE_SINGLE;
}
@ -421,7 +457,7 @@ void* cURLCamera::thread_func() {
double dSize;
c = (*curl_easy_init_f)();
if(c == nullptr) {
if (c == nullptr) {
dlclose(curl_lib);
Error("Failed getting easy handle from libcurl");
tRet = -51;
@ -431,7 +467,7 @@ void* cURLCamera::thread_func() {
CURLcode cRet;
/* Set URL */
cRet = (*curl_easy_setopt_f)(c, CURLOPT_URL, mPath.c_str());
if(cRet != CURLE_OK) {
if (cRet != CURLE_OK) {
Error("Failed setting libcurl URL: %s", (*curl_easy_strerror_f)(cRet));
tRet = -52;
return (void*)tRet;
@ -439,91 +475,91 @@ void* cURLCamera::thread_func() {
/* Header callback */
cRet = (*curl_easy_setopt_f)(c, CURLOPT_HEADERFUNCTION, &header_callback_dispatcher);
if(cRet != CURLE_OK) {
if (cRet != CURLE_OK) {
Error("Failed setting libcurl header callback function: %s", (*curl_easy_strerror_f)(cRet));
tRet = -53;
return (void*)tRet;
}
cRet = (*curl_easy_setopt_f)(c, CURLOPT_HEADERDATA, this);
if(cRet != CURLE_OK) {
if (cRet != CURLE_OK) {
Error("Failed setting libcurl header callback object: %s", (*curl_easy_strerror_f)(cRet));
tRet = -54;
return (void*)tRet;
}
/* Data callback */
cRet = (*curl_easy_setopt_f)(c, CURLOPT_WRITEFUNCTION, &data_callback_dispatcher);
if(cRet != CURLE_OK) {
if (cRet != CURLE_OK) {
Error("Failed setting libcurl data callback function: %s", (*curl_easy_strerror_f)(cRet));
tRet = -55;
return (void*)tRet;
}
cRet = (*curl_easy_setopt_f)(c, CURLOPT_WRITEDATA, this);
if(cRet != CURLE_OK) {
if (cRet != CURLE_OK) {
Error("Failed setting libcurl data callback object: %s", (*curl_easy_strerror_f)(cRet));
tRet = -56;
return (void*)tRet;
}
/* Progress callback */
cRet = (*curl_easy_setopt_f)(c, CURLOPT_NOPROGRESS, 0);
if(cRet != CURLE_OK) {
if (cRet != CURLE_OK) {
Error("Failed enabling libcurl progress callback function: %s", (*curl_easy_strerror_f)(cRet));
tRet = -57;
return (void*)tRet;
}
cRet = (*curl_easy_setopt_f)(c, CURLOPT_PROGRESSFUNCTION, &progress_callback_dispatcher);
if(cRet != CURLE_OK) {
if (cRet != CURLE_OK) {
Error("Failed setting libcurl progress callback function: %s", (*curl_easy_strerror_f)(cRet));
tRet = -58;
return (void*)tRet;
}
cRet = (*curl_easy_setopt_f)(c, CURLOPT_PROGRESSDATA, this);
if(cRet != CURLE_OK) {
if (cRet != CURLE_OK) {
Error("Failed setting libcurl progress callback object: %s", (*curl_easy_strerror_f)(cRet));
tRet = -59;
return (void*)tRet;
}
/* Set username and password */
if(!mUser.empty()) {
if (!mUser.empty()) {
cRet = (*curl_easy_setopt_f)(c, CURLOPT_USERNAME, mUser.c_str());
if(cRet != CURLE_OK)
if (cRet != CURLE_OK)
Error("Failed setting username: %s", (*curl_easy_strerror_f)(cRet));
}
if(!mPass.empty()) {
if (!mPass.empty()) {
cRet = (*curl_easy_setopt_f)(c, CURLOPT_PASSWORD, mPass.c_str());
if(cRet != CURLE_OK)
if (cRet != CURLE_OK)
Error("Failed setting password: %s", (*curl_easy_strerror_f)(cRet));
}
/* Authenication preference */
cRet = (*curl_easy_setopt_f)(c, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
if(cRet != CURLE_OK)
if (cRet != CURLE_OK)
Warning("Failed setting libcurl acceptable http authenication methods: %s", (*curl_easy_strerror_f)(cRet));
/* Work loop */
for(int attempt=1;attempt<=CURL_MAXRETRY;attempt++) {
for (int attempt=1;attempt<=CURL_MAXRETRY;attempt++) {
tRet = 0;
while(!bTerminate) {
while (!bTerminate) {
/* Do the work */
cRet = (*curl_easy_perform_f)(c);
if(mode == MODE_SINGLE) {
if(cRet != CURLE_OK) {
if (mode == MODE_SINGLE) {
if (cRet != CURLE_OK) {
break;
}
/* Attempt to get the size of the file */
cRet = (*curl_easy_getinfo_f)(c, CURLINFO_CONTENT_LENGTH_DOWNLOAD, &dSize);
if(cRet != CURLE_OK) {
if (cRet != CURLE_OK) {
break;
}
/* We need to lock for the offsets array and the condition variable */
lock();
/* Push the size into our offsets array */
if(dSize > 0) {
if (dSize > 0) {
single_offsets.push_back(dSize);
} else {
Error("Unable to get the size of the image");
@ -532,7 +568,7 @@ void* cURLCamera::thread_func() {
}
/* Signal the request complete condition variable */
tRet = pthread_cond_signal(&request_complete_cond);
if(tRet != 0) {
if (tRet != 0) {
Error("Failed signaling request completed condition variable: %s",strerror(tRet));
tRet = -61;
return (void*)tRet;
@ -546,13 +582,13 @@ void* cURLCamera::thread_func() {
}
/* Return value checking */
if(cRet == CURLE_ABORTED_BY_CALLBACK || bTerminate) {
if (cRet == CURLE_ABORTED_BY_CALLBACK || bTerminate) {
/* Aborted */
break;
} else if (cRet != CURLE_OK) {
/* Some error */
Error("cURL Request failed: %s",(*curl_easy_strerror_f)(cRet));
if(attempt < CURL_MAXRETRY) {
if (attempt < CURL_MAXRETRY) {
Error("Retrying.. Attempt %d of %d",attempt,CURL_MAXRETRY);
/* Do a reset */
lock();
@ -597,7 +633,7 @@ int cURLCamera::unlock() {
int cURLCamera::progress_callback(void *userdata, double dltotal, double dlnow, double ultotal, double ulnow) {
/* Signal the curl thread to terminate */
if(bTerminate)
if (bTerminate)
return -10;
return 0;