Move everything into a separate futatabi/ subdir, for the upcoming merge with Futatabi.

[nageru] / nageru / image_input.h

diff --git a/nageru/image_input.h b/nageru/image_input.h
new file mode 100644 (file)
index 0000000..02be497
--- /dev/null
+++ b/nageru/image_input.h
@@ -0,0 +1,49 @@
+#ifndef _IMAGE_INPUT_H
+#define _IMAGE_INPUT_H 1
+
+#include <epoxy/gl.h>
+#include <movit/flat_input.h>
+#include <stdbool.h>
+#include <time.h>
+#include <condition_variable>
+#include <cstdint>
+#include <map>
+#include <memory>
+#include <mutex>
+#include <string>
+#include <thread>
+
+// An output that takes its input from a static image, loaded with ffmpeg.
+// comes from a single 2D array with chunky pixels. The image is refreshed
+// from disk about every second.
+class ImageInput : public movit::FlatInput {
+public:
+       ImageInput(const std::string &filename);
+
+       std::string effect_type_id() const override { return "ImageInput"; }
+       void set_gl_state(GLuint glsl_program_num, const std::string& prefix, unsigned *sampler_num) override;
+       static void shutdown_updaters();
+       
+private:
+       struct Image {
+               unsigned width, height;
+               std::unique_ptr<uint8_t[]> pixels;
+               timespec last_modified;
+       };
+
+       std::string filename, pathname;
+       std::shared_ptr<const Image> current_image;
+
+       static std::shared_ptr<const Image> load_image(const std::string &filename, const std::string &pathname);
+       static std::shared_ptr<const Image> load_image_raw(const std::string &pathname);
+       static void update_thread_func(const std::string &filename, const std::string &pathname, const timespec &first_modified);
+       static std::mutex all_images_lock;
+       static std::map<std::string, std::shared_ptr<const Image>> all_images;
+       static std::map<std::string, std::thread> update_threads;
+
+       static std::mutex threads_should_quit_mu;
+       static bool threads_should_quit;  // Under threads_should_quit_mu.
+       static std::condition_variable threads_should_quit_modified;  // Signals when threads_should_quit is set.
+};
+
+#endif // !defined(_IMAGE_INPUT_H)