Experimental: Adding some fsanitize flags, a new example exe, a mutex on FFmpegReader::Close, and some additional clean-up code on AddImage (when a previous image exists)

examples/Example.cpp

@@ -23,50 +23,15 @@ using namespace openshot;
 
 int main(int argc, char* argv[]) {
 
-    // Types for storing time durations in whole and fractional milliseconds
-    using ms = std::chrono::milliseconds;
-    using s = std::chrono::seconds;
-    using double_ms = std::chrono::duration<double, ms::period>;
-
     // FFmpeg Reader performance test
-    const auto total_1 = std::chrono::high_resolution_clock::now();
-    FFmpegReader r9("/home/jonathan/Videos/sintel_trailer-1080p.mp4");
+    FFmpegReader r9("/home/jonathan/Downloads/pts-test-files/broken-files/lady-talking-1.mp4");
     r9.Open();
-    for (long int frame = 1; frame <= 1000; frame++)
+    for (long int frame = 1; frame <= r9.info.video_length; frame++)
     {
-        const auto time1 = std::chrono::high_resolution_clock::now();
+        std::cout << "Requesting Frame: #: " << frame << std::endl;
         std::shared_ptr<Frame> f = r9.GetFrame(frame);
-        const auto time2 = std::chrono::high_resolution_clock::now();
-        std::cout << "FFmpegReader: " << frame
-                  << " (" << double_ms(time2 - time1).count() << " ms)\n";
     }
-    const auto total_2 = std::chrono::high_resolution_clock::now();
-    auto total_sec = std::chrono::duration_cast<ms>(total_2 - total_1);
-    std::cout << "FFmpegReader TOTAL: " << total_sec.count() << " ms\n";
     r9.Close();
 
-
-    // Timeline Reader performance test
-    Timeline tm(r9.info);
-    Clip *c = new Clip(&r9);
-    tm.AddClip(c);
-    tm.Open();
-
-    const auto total_3 = std::chrono::high_resolution_clock::now();
-    for (long int frame = 1; frame <= 1000; frame++)
-    {
-        const auto time1 = std::chrono::high_resolution_clock::now();
-        std::shared_ptr<Frame> f = tm.GetFrame(frame);
-        const auto time2 = std::chrono::high_resolution_clock::now();
-        std::cout << "Timeline: " << frame
-                  << " (" << double_ms(time2 - time1).count() << " ms)\n";
-    }
-    const auto total_4 = std::chrono::high_resolution_clock::now();
-    total_sec = std::chrono::duration_cast<ms>(total_4 - total_3);
-    std::cout << "Timeline TOTAL: " << total_sec.count() << " ms\n";
-    tm.Close();
-
-    std::cout << "Completed successfully!\n";
-
-    return 0;
+    exit(0);
 }

src/CMakeLists.txt

@@ -19,6 +19,8 @@ if (POLICY CMP0057)
 endif()
 
 ###############  PROFILING  #################
+#set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-omit-frame-pointer -fsanitize=address")
+#set (CMAKE_LINKER_FLAGS "${CMAKE_LINKER_FLAGS} -fno-omit-frame-pointer -fsanitize=address")
 #set(PROFILER "/usr/lib/x86_64-linux-gnu/libprofiler.so.0")
 #set(PROFILER "/usr/lib/x86_64-linux-gnu/libtcmalloc.so.4")
 
@@ -177,6 +179,8 @@ if(NOT TARGET OpenShot::Audio)
 endif()
 target_link_libraries(openshot PUBLIC OpenShot::Audio)
 
+#find_package(FindAsan)
+
 ###
 ### ImageMagick
 ###

src/FFmpegReader.cpp

@@ -584,6 +584,8 @@ void FFmpegReader::Open() {
 void FFmpegReader::Close() {
 	// Close all objects, if reader is 'open'
 	if (is_open) {
+        const std::lock_guard<std::recursive_mutex> lock(processingMutex);
+
 		// Mark as "closed"
 		is_open = false;
 		ZmqLogger::Instance()->AppendDebugMethod("FFmpegReader::Close (Start)");
@@ -1335,7 +1337,7 @@ void FFmpegReader::ProcessVideoPacket(int64_t requested_frame) {
 
 	// Determine required buffer size and allocate buffer
 	const int bytes_per_pixel = 4;
-	int buffer_size = width * height * bytes_per_pixel;
+	int buffer_size = (width * height * bytes_per_pixel) + 128;
 	buffer = new unsigned char[buffer_size]();
 
 	// Copy picture data from one AVFrame (or AVPicture) to another one.
@@ -2135,6 +2137,10 @@ void FFmpegReader::CheckWorkingFrames(int64_t requested_frame) {
 
 		}
 	}
+
+	// Clear vector of frames
+    working_frames.clear();
+    working_frames.shrink_to_fit();
 }
 
 // Check for the correct frames per second (FPS) value by scanning the 1st few seconds of video packets.

src/Frame.cpp

@@ -753,6 +753,10 @@ void Frame::AddImage(
 	int new_width, int new_height, int bytes_per_pixel,
 	QImage::Format type, const unsigned char *pixels_)
 {
+    if (has_image_data) {
+        // Delete the previous QImage
+        image.reset();
+    }
 
   // Create new image object from pixel data
 	auto new_image = std::make_shared<QImage>(