Update to Qt 5.9

[ruslo]

Here we are using pixelBufferRef which is not a part of standard API. Added to fork in this commit. I don't remember what was the plans about it. Should facefilter use some other fucntion or keep using same fork/patch/release approach?

[headupinclouds]

If it is easy to add at this point, it is probably worth patching. We had added the directCVPixelBufferRef pointer in order to make use of the iOS Texture Cache optimizations in ogles_gpgpu for iOS platforms (i.e., grab NV21 frames from the camera and load luminance (GL_LUMINANCE) + chroma (GL_LUMINANCE_ALPHA) textures w/ platform optimization followed by the ogles_gpgpu::Yuv2RgbProc shaders for RGBA output textures). I seem to recall that in some Qt > 5.6 the iOS Texture Cache stuff was added internally (in Qt) but that Qt was forcing an RGBA frame type (rather than NV21), which is 4/1.5=2.67x the data. In practice there might not be much difference between the two. If there are no major downsides, I think it would be useful to have the option if it is needed. That is the tested pathway for iOS builds in facefilter, for example.

[ruslo]

https://github.com/elucideye/drishti/pull/537 merged.

To test:

• [x] Android (android-ndk-r10e-api-19-armeabi-v7a-neon-hid-sections)
• [x] iOS
• [x] OSX (osx-10-11)
• [ ] Windows (vs-14-2015)
  • failed identifier "khronos_int64_t" is undefined
  • was not working before: https://github.com/elucideye/drishti/issues/179
• [ ] Linux (gcc-pic)
  • failed no service found for - "org.qt-project.qt.camera"
  • was not working before: https://github.com/elucideye/drishti/issues/178

[ruslo]

Linux (gcc-pic)

Currently build failed in ogles_gpgpu. Seems it doesn't work with OGLES_GPGPU_OPENGL_ES3=ON.

[ruslo]

Currently build failed in ogles_gpgpu. Seems it doesn't work with OGLES_GPGPU_OPENGL_ES3=ON

Header include issue in ogles_gpgpu. Back to "no service found for" error.

[ruslo]

no service found for - "org.qt-project.qt.camera"

First 3 pages of search:

• https://stackoverflow.com/q/42268777/2288008
• https://stackoverflow.com/q/37650773/2288008
• https://forum.qt.io/topic/52793/raspberry-pi-qt-5-3-2-qt-camera-not-working-no-service-found-for-org-qt-project-qt-camera

Page 4 is our discussion :)

It seems that problem may be related to GStreamer. I've installed system GStreamer on my Ubuntu but Qt still reports "gstreamer not found" error. I guess it's because we are using custom PKG_CONFIG_PATH: https://github.com/ruslo/hunter/blob/237878f79b8152fce382f33f991c78d11a99f893/cmake/projects/Qt/ep-stages/qt-configure.cmake.in#L48-L52 I.e. it's expected that GStreamer installed by Hunter.

[ruslo]

System GStreamer 0.10 is working with ugly hack on simple qt-camera example from Hunter. I've added GStreamer 1.0 (latest stable) to Hunter and got next issues:

• Qt configure with static libraries failed, so I've switched to shared
• qt-camera with GStreamer 1.0 lauches with error GLib-GObject-WARNING **: invalid (NULL) pointer instance
• I've tried to build GStreamer 0.10.36 but it failes with error grammar.tab.c:67:25: error: too few arguments to function ‘priv_gst_parse_yylex’ it's Bison 3 incompatibility issue.

[headupinclouds]

Closing in favor of native iOS/Android apps, with glfw/aglet/sfml for all else.