A web service to remotely control the presets over HTTP from e.g. a smartphone. Screenshot:

Sven · Sven · commit f36c0c07a665 · 2013-01-21T22:06:48.000+01:00
http://sven.killig.de/projectM/HTTPRemoteControl.png Usage: [HTTP_PORT=<HTTP port> [HTTP_NAME=<HTML title>]] ./projectM-jack Requires LibQxt. Unfortunately, cmake doesn't come with a FindQxt.cmake yet. I modified the one available at http://dev.libqxt.org/libqxt/src in the folder "features" to work with Ubuntu 12.10: http://sven.killig.de/projectM/FindQxt.cmake Put it to /usr/share/cmake-2.8/Modules I first tried to start my web service in projectM-qt, but somehow it didn't work, so for now it's only available in projectM-jack. Perhaps someone more experienced with Q[x]t can fix this.
diff --git a/src/projectM-jack/CMakeLists.txt b/src/projectM-jack/CMakeLists.txt
@@ -8,6 +8,7 @@ INCLUDE(cmake/CPack-projectM.cmake)
 
 OPTION(QT_JACK_SUPPORT "Enable Qt4 GUI Support for the projectM jack port" ON)
 OPTION(BUILD_PROJECTM_JACK_STATIC "Build a binary that only depends on jack and stnadard MACOSX libraries" OFF)
+OPTION(HTTP_REMOTE_CONTROL "Enable HTTP remote control" OFF)
 
 if (QT_JACK_SUPPORT)
 
@@ -55,24 +56,40 @@ MESSAGE( "JACK is NOT found. Please install jack from http://www.jackaudio.org."
 endif(JACK_FOUND)
 
 
+if(HTTP_REMOTE_CONTROL)
+set(projectM_jack_SRCS
+  qprojectM-jack.cpp ConfigFile.h ConfigFile.cpp HTTPRemoteControl.cpp
+)
+else(HTTP_REMOTE_CONTROL)
 set(projectM_jack_SRCS
   qprojectM-jack.cpp ConfigFile.h ConfigFile.cpp
 )
+endif(HTTP_REMOTE_CONTROL)
 
+if(HTTP_REMOTE_CONTROL)
 set(projectM_jack_MOC_HDRS
-
+  HTTPRemoteControl.h
 )
+endif(HTTP_REMOTE_CONTROL)
 
 
 # After this call, foo_MOC_SRCS = moc_Class1.cxx moc_Class2.cxx moc_Class3.cxx.
-qt4_wrap_cpp(projectM_jack_MOC_SRCS ${projectM_MOC_HDRS})
+qt4_wrap_cpp(projectM_jack_MOC_SRCS ${projectM_jack_MOC_HDRS})
 
 
 ADD_DEFINITIONS(-DLINUX)
 ADD_DEFINITIONS(${QT_DEFINITIONS})
 ADD_DEFINITIONS(-DQT_NO_DEBUG)
 
 
+if(HTTP_REMOTE_CONTROL)
+   ADD_DEFINITIONS(-DHTTP_REMOTE_CONTROL)
+   SET(QXT_USE_QXTWEB TRUE)
+   SET(QXT_USE_QXTCORE TRUE)
+   find_package(Qxt REQUIRED)
+endif(HTTP_REMOTE_CONTROL)
+
+
 if (${CMAKE_PROJECT_NAME} MATCHES "projectM-complete")
    set(PROJECTM_INCLUDE ${PROJECTM_ROOT_SOURCE_DIR}/libprojectM ${PROJECTM_ROOT_SOURCE_DIR}/projectM-qt)
    set(PROJECTM_LINK ${PROJECTM_ROOT_BINARY_DIR}/libprojectM ${PROJECTM_ROOT_BINARY_DIR}/projectM-qt)
@@ -84,7 +101,7 @@ elseif (${CMAKE_PROJECT_NAME} MATCHES ${PROJECT_NAME})
 endif (${CMAKE_PROJECT_NAME} MATCHES "projectM-complete")
 
 
-INCLUDE_DIRECTORIES(${PROJECTM_INCLUDE} ${JACK_INCLUDEDIR} ${SDL_INCLUDE_DIR} ${QT_INCLUDE_DIR} ${QT_QTGUI_INCLUDE_DIR} ${QT_QTOPENGL_INCLUDE_DIR} ${QT_QTCORE_INCLUDE_DIR})
+INCLUDE_DIRECTORIES(${PROJECTM_INCLUDE} ${JACK_INCLUDEDIR} ${SDL_INCLUDE_DIR} ${QT_INCLUDE_DIR} ${QT_QTGUI_INCLUDE_DIR} ${QT_QTOPENGL_INCLUDE_DIR} ${QT_QTCORE_INCLUDE_DIR} ${QXT_INCLUDE_DIRS} ${QT_QTNETWORK_INCLUDE_DIR})
 
 LINK_DIRECTORIES(${PROJECTM_LINK})
 
@@ -104,7 +121,7 @@ else (BUILD_PROJECTM_JACK_STATIC)
 SET(PACKAGED_LIBRARIES projectM-qt projectM)
 endif (BUILD_PROJECTM_JACK_STATIC)
 
-TARGET_LINK_LIBRARIES(projectM-jack ${PACKAGED_LIBRARIES} jack ${QT_QTGUI_LIBRARIES} ${QT_QTOPENGL_LIBRARIES} ${QT_QTCORE_LIBRARIES} ${QT_LIBRARIES} ${OPENGL_LIBRARIES} ${QT_QTXML_LIBRARIES})
+TARGET_LINK_LIBRARIES(projectM-jack ${PACKAGED_LIBRARIES} jack ${QT_QTGUI_LIBRARIES} ${QT_QTOPENGL_LIBRARIES} ${QT_QTCORE_LIBRARIES} ${QT_LIBRARIES} ${OPENGL_LIBRARIES} ${QT_QTXML_LIBRARIES} ${QXT_LIBRARIES})
 
 INSTALL(TARGETS projectM-jack DESTINATION ${CMAKE_INSTALL_PREFIX}/bin )
 install(FILES "projectM-jack.desktop" DESTINATION ${CMAKE_INSTALL_PREFIX}/share/applications)
diff --git a/src/projectM-jack/HTTPRemoteControl.cpp b/src/projectM-jack/HTTPRemoteControl.cpp
@@ -0,0 +1,59 @@
+#include "HTTPRemoteControl.h"
+#include <sstream>
+
+#define HARDCUT true
+
+void HTTPRemoteControl::selectPrevious(QxtWebRequestEvent* event) {
+  postEvent(new QxtWebPageEvent(event->sessionID, event->requestID, "selectPrevious"));
+  parent3->selectPrevious(HARDCUT);
+}
+
+void HTTPRemoteControl::selectNext(QxtWebRequestEvent* event) {
+  postEvent(new QxtWebPageEvent(event->sessionID, event->requestID, "selectNext"));
+  parent3->selectNext(HARDCUT);
+}
+
+void HTTPRemoteControl::selectRandom(QxtWebRequestEvent* event) {
+  postEvent(new QxtWebPageEvent(event->sessionID, event->requestID, "selectRandom"));
+  parent3->selectRandom(HARDCUT);
+}
+
+void HTTPRemoteControl::index(QxtWebRequestEvent* event) {
+  QString s="";
+  std::stringstream convert, convert2;
+  s=s+"<html>";
+  s=s+"<head><title>"+qgetenv("HTTP_NAME")+"</title><base target='datatransfer'></head>";
+  s=s+"<body bgcolor='black' text='white' link='#9999FF' alink='#AAAAFF' vlink='#EE88EE'>";
+  s=s+"<iframe name='datatransfer' style='display:none'></iframe>";
+  s=s+"<a href='/selectPrevious'>&uarr;</a> <a href='/selectNext'>&darr;</a> <a href='/selectRandom'>Random</a> ";
+  for(int i=1; i<=6; i++) {
+    convert.str("");
+    convert << i;
+    s=s+"<a href='/changePresetRating/"+convert.str().c_str()+"'>"+convert.str().c_str()+"</a> ";
+  }
+  s=s+"<p>";
+  for(int i=0; i<parent3->getPlaylistSize(); i++) {
+    convert.str("");
+    convert << i;
+    std::string n=parent3->getPresetName(i);
+    convert2.str("");
+    convert2 << parent3->getPresetRating(i, FIRST_RATING_TYPE);
+    s=s+"<a href='/selectPresetPosition/"+convert.str().c_str()+"'>"+n.substr(0, n.find(".milk")).c_str()+" ["+convert2.str().c_str()+"]</a><br>";
+  }
+  s=s+"</body>";
+  s=s+"</html>";
+  postEvent(new QxtWebPageEvent(event->sessionID, event->requestID, s.toUtf8()));
+}
+
+void HTTPRemoteControl::selectPresetPosition(QxtWebRequestEvent* event, QString a) {
+  postEvent(new QxtWebPageEvent(event->sessionID, event->requestID, "selectPresetPosition('"+a.toUtf8()+"')"));
+  parent3->selectPreset(a.toUInt(), HARDCUT);
+}
+
+void HTTPRemoteControl::changePresetRating(QxtWebRequestEvent* event, QString a) {
+  postEvent(new QxtWebPageEvent(event->sessionID, event->requestID, "changePresetRating('"+a.toUtf8()+"')"));
+  unsigned int index;
+  parent3->selectedPresetIndex(index);
+  parent3->changePresetRating(index, a.toUInt(), FIRST_RATING_TYPE);
+  parent3->selectNext(HARDCUT);
+}
diff --git a/src/projectM-jack/HTTPRemoteControl.h b/src/projectM-jack/HTTPRemoteControl.h
@@ -0,0 +1,27 @@
+#ifndef HTTPREMOTECONTROL
+#define HTTPREMOTECONTROL
+
+#include <QxtHttpServerConnector>
+#include <QxtHttpSessionManager>
+#include <QxtWebSlotService>
+#include <QxtWebPageEvent>
+#include "qprojectm.hpp"
+
+class HTTPRemoteControl : public QxtWebSlotService {
+    Q_OBJECT
+    QProjectM * parent3;
+public:
+    HTTPRemoteControl(QxtAbstractWebSessionManager * sm, QProjectM * parent2): QxtWebSlotService(sm, 0) {
+      parent3=parent2;
+      printf("HTTPRemoteControl()\n"); fflush(stdout);
+    }
+public slots:
+    void selectPrevious(QxtWebRequestEvent*);
+    void selectNext(QxtWebRequestEvent*);
+    void selectRandom(QxtWebRequestEvent*);
+    void index(QxtWebRequestEvent*);
+    void selectPresetPosition(QxtWebRequestEvent*, QString);
+    void changePresetRating(QxtWebRequestEvent*, QString);
+};
+
+#endif
diff --git a/src/projectM-jack/qprojectM-jack.cpp b/src/projectM-jack/qprojectM-jack.cpp
@@ -34,6 +34,10 @@
 #include <sys/stat.h> // for mkdir
 #include <jack/jack.h>
 
+#ifdef HTTP_REMOTE_CONTROL
+#include "HTTPRemoteControl.h"
+#endif
+
 #define QPROJECTM_JACK_CONFIG_FILE "/config.inp"
 
 std::string read_config();
@@ -323,6 +327,26 @@ int main (int argc, char **argv) {
 	     }
 
 	free (ports);
+	
+	
+#ifdef HTTP_REMOTE_CONTROL
+  uint port=qgetenv("HTTP_PORT").toUInt();
+  QxtHttpServerConnector connector;
+
+  QxtHttpSessionManager session;
+  printf("session.setPort(%i\n", port); fflush(stdout);
+  session.setPort(port);
+  session.setConnector(&connector);
+
+  HTTPRemoteControl s1(&session, mainWindow->qprojectM());
+  session.setStaticContentService ( &s1);
+
+  printf("session.start()\n"); fflush(stdout);
+  if(port>0) { // I think it didn't work when the conditional was further up
+    session.start();
+  }
+#endif
+
 
 	//----------------------------------END
 
