xvfb.sh (#114)

.dockerignore

@@ -1,8 +1,10 @@
 *
 !/.bazelrc
 !/BUILD
+!/data/
 !/resolved.bzl
-!/variables.bzl
 !/third_party
+!/variables.bzl
 !/voidstar
 !/WORKSPACE
+!/xvfb.sh

.github/workflows/workflow.yml

@@ -29,6 +29,11 @@ jobs:
     - uses: actions/checkout@v2
     - run: DOCKER_BUILDKIT=1 docker build -o=./bin/ --target=voidstar . --progress=plain
     - run: ./bin/voidstar --help
+    - uses: Wandalen/[email protected]
+      with:
+        command: DOCKER_BUILDKIT=1 docker build -o=. --target=video-gcc . --progress=plain
+        attempt_limit: 20
+        attempt_delay: 1000
 
   build_on_ubuntu_with_clang:
     name: Build on ubuntu with Clang
@@ -41,7 +46,11 @@ jobs:
     - uses: actions/checkout@v2
     - run: DOCKER_BUILDKIT=1 docker build -o=./bin/ --target=voidstar-clang . --progress=plain
     - run: ./bin/voidstar --help
-
+    - uses: Wandalen/[email protected]
+      with:
+        command: DOCKER_BUILDKIT=1 docker build -o=. --target=video-clang . --progress=plain
+        attempt_limit: 20
+        attempt_delay: 1000
 
   build_on_macos:
     name: Build on macos

.gitignore

@@ -4,3 +4,4 @@
 /bazelisk
 
 /bin/*
+/video.webm

Dockerfile

@@ -18,14 +18,17 @@ RUN \
         ca-certificates \
         clang \
         curl \
+        ffmpeg \
         git \
         gzip \
         libgl1-mesa-dev \
         python3 \
         software-properties-common \
         tar \
         unzip \
+        xauth \
         xorg-dev \
+        xvfb \
  && update-alternatives --install /usr/bin/python python /usr/bin/python3 1
 RUN \
     --mount=type=cache,target=/var/cache/apt \
@@ -77,8 +80,6 @@ RUN \
  && bazel build --repo_env=CC=clang voidstar \
  # Necessary as COPY --from does not follow symlinks
  && cp /app/bazel-bin/voidstar/voidstar /
-FROM scratch AS voidstar-clang
-COPY --from=builder-clang /voidstar /
 
 # voidstar GCC
 FROM base AS builder-gcc
@@ -88,5 +89,31 @@ RUN \
  && bazel build voidstar \
  # Necessary as COPY --from does not follow symlinks
  && cp /app/bazel-bin/voidstar/voidstar /
+
+
+# xvfb GCC
+FROM builder-gcc AS xvfb-gcc
+ARG WxHxD=800x600x24
+ARG BIN=/voidstar
+ARG FILE=./data/BigPictureBG.tga
+ARG OUT=video.webm
+RUN ./xvfb.sh
+FROM scratch AS video-gcc
+COPY --from=xvfb-gcc /app/video.webm /
+
+# xvfb Clang
+FROM builder-clang AS xvfb-clang
+ARG WxHxD=800x600x24
+ARG BIN=/voidstar
+ARG FILE=./data/BigPictureBG.tga
+ARG OUT=video.webm
+RUN ./xvfb.sh
+FROM scratch AS video-clang
+COPY --from=xvfb-clang /app/video.webm /
+
+
+FROM scratch AS voidstar-clang
+COPY --from=builder-clang /voidstar /
+
 FROM scratch AS voidstar
 COPY --from=builder-gcc /voidstar /

snap/snapcraft.yaml

@@ -1,5 +1,5 @@
 name: voidstar
-version: v1.34.1 # FIXME: 'git'
+version: v1.35.0 # FIXME: 'git'
 summary: void* casts files onto 2D/3D colored spaces for your mind blowing needs # 79 char long summary
 description: |
   Usage:

voidstar/managers/glfw3.cc

@@ -229,8 +229,11 @@ bool GLFW3Manager::updateFirst(float deltaTime, glm::mat4* MVP) {
       // User loaded a different file
       file_changed || false) {
     if (args_->move_window) slide_window_right();
-    bool slid = slide_window(scene_->selected(), scene_->indices());
-    if (!slid && args_->move_window) args_->move_window = false;
+    auto slid = slide_window(scene_->selected(), scene_->indices());
+    if (previously_slid_ != slid)
+      std::cout << "#selected: " << slid << std::endl;
+    previously_slid_ = slid;
+    if (slid < 1 && args_->move_window) args_->move_window = false;
   }
 
   return true;

voidstar/managers/manager.h

@@ -7,7 +7,6 @@
 #include "voidstar/managers/events.h"
 #include "voidstar/registrar.h"
 #include "voidstar/scenes/scene.h"
-#include "voidstar/size2str.h"
 
 class Manager {
  public:
@@ -62,7 +61,8 @@ class Manager {
                                  : args_->sliding_window_length;
   }
 
-  bool slide_window(VertIndices& selected, const VertIndices& indices) {
+  size_t previously_slid_ = 0;
+  size_t slide_window(VertIndices& selected, const VertIndices& indices) {
     using offset_t = VertIndices::const_iterator::difference_type;
     const offset_t woffset = static_cast<offset_t>(sliding_window_offset_);
     const offset_t wlength = static_cast<offset_t>(sliding_window_length_);
@@ -75,10 +75,9 @@ class Manager {
       selected.assign(left, right);
       sliding_window_left_ = &left[0];
       sliding_window_right_ = &right[0];
-      std::cout << "#selected: " << size2str(selected.size()) << std::endl;
-      return true;
+      return selected.size();
     }
-    return false;
+    return 0;
   }
 
  protected:

xvfb.sh

@@ -0,0 +1,64 @@
+#!/bin/bash -eux
+set -o pipefail
+
+_kill_procs() {
+  kill -TERM $companion
+  wait $companion
+  kill -TERM $xvfb
+}
+trap _kill_procs SIGTERM
+
+display=99
+
+wxhxd=${WxHxD:-800x600x24}
+bin=${BIN:-./bin/voidstar}
+file=${FILE:-"$bin"}
+out=${OUT:-video.webm}
+
+case "$file" in
+  http://*|https://*)
+    curl -fsSLo /file "$file"
+    file=/file
+    # ls -lh "$file"; exit 42
+;;*) ;;
+esac
+
+rm -rf /tmp/xvfb-run.*
+
+xvfb-run \
+  --server-num="$display" \
+  --error-file=/dev/stdout \
+  -s "-screen 0 $wxhxd" \
+  "$bin" \
+    --move \
+    --exit-at-fin \
+    "$file" &
+xvfb=$!
+
+touch ~/.Xauthority
+xauth generate :0 . trusted || true
+xauth list
+
+ls /tmp/xvfb*/Xauthority >/dev/null
+
+XAUTHORITY=$(echo /tmp/xvfb*/Xauthority) \
+  ffmpeg \
+    -r 30 \
+    -f x11grab \
+    -draw_mouse 0 \
+    -s "$(cut -dx -f1-2 <<<"$wxhxd")" \
+    -i :"$display" \
+    -c:v libvpx \
+    -quality realtime \
+    -cpu-used 0 \
+    -b:v 384k \
+    -qmin 10 \
+    -qmax 42 \
+    -maxrate 384k \
+    -bufsize 1000k \
+    -an "$out" &
+companion=$!
+
+wait $xvfb
+kill -TERM $companion
+wait $companion || true