[build] move headless rendering files to platform/default

7 files changed, 115 insertions, 5 deletions

diff --git a/platform/default/headless_backend_osmesa.cpp b/platform/default/headless_backend_osmesa.cpp
index 04709d4a1b..3dac5913ac 100644
--- a/platform/default/headless_backend_osmesa.cpp
+++ b/platform/default/headless_backend_osmesa.cpp
@@ -1,4 +1,4 @@
-#include <mbgl/platform/default/headless_backend.hpp>
+#include <mbgl/gl/headless_backend.hpp>
 #include <mbgl/platform/log.hpp>
 
 #include <GL/osmesa.h>
diff --git a/platform/default/headless_backend.cpp b/platform/default/mbgl/gl/headless_backend.cpp
index 30ce8d2230..0bfdf11c98 100644
--- a/platform/default/headless_backend.cpp
+++ b/platform/default/mbgl/gl/headless_backend.cpp
@@ -1,5 +1,5 @@
-#include <mbgl/platform/default/headless_backend.hpp>
-#include <mbgl/platform/default/headless_display.hpp>
+#include <mbgl/gl/headless_backend.hpp>
+#include <mbgl/gl/headless_display.hpp>
 
 #include <cassert>
 #include <stdexcept>
diff --git a/platform/default/mbgl/gl/headless_backend.hpp b/platform/default/mbgl/gl/headless_backend.hpp
new file mode 100644
index 0000000000..da8c55e044
--- /dev/null
+++ b/platform/default/mbgl/gl/headless_backend.hpp
@@ -0,0 +1,57 @@
+#pragma once
+
+#include <mbgl/gl/extension.hpp>
+
+#include <mbgl/map/backend.hpp>
+
+#include <memory>
+#include <functional>
+
+namespace mbgl {
+
+class HeadlessDisplay;
+
+class HeadlessBackend : public Backend {
+public:
+    HeadlessBackend();
+    HeadlessBackend(std::shared_ptr<HeadlessDisplay>);
+    ~HeadlessBackend() override;
+
+    void invalidate() override;
+    void activate() override;
+    void deactivate() override;
+    void notifyMapChange(MapChange) override;
+
+    void setMapChangeCallback(std::function<void(MapChange)>&& cb) { mapChangeCallback = std::move(cb); }
+
+    struct Impl {
+        virtual ~Impl() {}
+        virtual void activateContext() = 0;
+        virtual void deactivateContext() {}
+    };
+
+private:
+    // Implementation specific functions
+    static gl::glProc initializeExtension(const char*);
+
+    bool hasContext() const { return bool(impl); }
+    bool hasDisplay();
+
+    void createContext();
+
+private:
+    void destroyContext();
+
+    void activateContext();
+    void deactivateContext();
+
+    std::unique_ptr<Impl> impl;
+    std::shared_ptr<HeadlessDisplay> display;
+
+    bool extensionsLoaded = false;
+    bool active = false;
+
+    std::function<void(MapChange)> mapChangeCallback;
+};
+
+} // namespace mbgl
diff --git a/platform/default/headless_display.cpp b/platform/default/mbgl/gl/headless_display.cpp
index 4ab111f775..6247046c29 100644
--- a/platform/default/headless_display.cpp
+++ b/platform/default/mbgl/gl/headless_display.cpp
@@ -1,4 +1,4 @@
-#include <mbgl/platform/default/headless_display.hpp>
+#include <mbgl/gl/headless_display.hpp>
 
 namespace mbgl {
 
diff --git a/platform/default/mbgl/gl/headless_display.hpp b/platform/default/mbgl/gl/headless_display.hpp
new file mode 100644
index 0000000000..a5c95085b8
--- /dev/null
+++ b/platform/default/mbgl/gl/headless_display.hpp
@@ -0,0 +1,20 @@
+#pragma once
+
+#include <memory>
+
+namespace mbgl {
+
+class HeadlessDisplay {
+public:
+    HeadlessDisplay();
+    ~HeadlessDisplay();
+
+    template <typename DisplayAttribute>
+    DisplayAttribute attribute() const;
+
+private:
+    class Impl;
+    std::unique_ptr<Impl>  impl;
+};
+
+} // namespace mbgl
diff --git a/platform/default/offscreen_view.cpp b/platform/default/mbgl/gl/offscreen_view.cpp
index 574686ebc9..16faf6a4a9 100644
--- a/platform/default/offscreen_view.cpp
+++ b/platform/default/mbgl/gl/offscreen_view.cpp
@@ -1,4 +1,4 @@
-#include <mbgl/platform/default/offscreen_view.hpp>
+#include <mbgl/gl/offscreen_view.hpp>
 #include <mbgl/gl/context.hpp>
 
 #include <cstring>
diff --git a/platform/default/mbgl/gl/offscreen_view.hpp b/platform/default/mbgl/gl/offscreen_view.hpp
new file mode 100644
index 0000000000..0e839e14cc
--- /dev/null
+++ b/platform/default/mbgl/gl/offscreen_view.hpp
@@ -0,0 +1,33 @@
+#pragma once
+
+#include <mbgl/map/view.hpp>
+#include <mbgl/gl/framebuffer.hpp>
+#include <mbgl/gl/renderbuffer.hpp>
+#include <mbgl/util/optional.hpp>
+#include <mbgl/util/image.hpp>
+
+namespace mbgl {
+
+namespace gl {
+class Context;
+} // namespace gl
+
+class OffscreenView : public View {
+public:
+    OffscreenView(gl::Context&, Size size = { 256, 256 });
+
+    void bind() override;
+
+    PremultipliedImage readStillImage();
+
+public:
+    const Size size;
+
+private:
+    gl::Context& context;
+    optional<gl::Framebuffer> framebuffer;
+    optional<gl::Renderbuffer<gl::RenderbufferType::RGBA>> color;
+    optional<gl::Renderbuffer<gl::RenderbufferType::DepthStencil>> depthStencil;
+};
+
+} // namespace mbgl