2 #define _IMAGE_INPUT_H 1
5 #include <movit/flat_input.h>
8 #include <condition_variable>
16 #include "ref_counted_texture.h"
20 // An output that takes its input from a static image, loaded with ffmpeg.
21 // comes from a single 2D array with chunky pixels. The image is refreshed
22 // from disk about every second.
23 class ImageInput : public movit::FlatInput {
25 // NOTE: You will need to call start_update_thread() yourself, once per program.
26 ImageInput(const std::string &filename);
28 std::string effect_type_id() const override { return "ImageInput"; }
29 void set_gl_state(GLuint glsl_program_num, const std::string& prefix, unsigned *sampler_num) override;
31 static void start_update_thread(QSurface *surface);
32 static void end_update_thread();
36 unsigned width, height;
37 RefCountedTexture tex;
38 timespec last_modified;
42 std::shared_ptr<const Image> current_image;
44 static std::shared_ptr<const Image> load_image(const std::string &filename, const std::string &pathname);
45 static std::shared_ptr<const Image> load_image_raw(const std::string &pathname);
46 static void update_thread_func(QSurface *surface);
47 static std::mutex all_images_lock;
48 static std::map<std::string, std::shared_ptr<const Image>> all_images; // Under all_images_lock.
50 static std::thread update_thread;
51 static std::mutex update_thread_should_quit_mu;
52 static bool update_thread_should_quit; // Under thread_should_quit_mu.
53 static std::condition_variable update_thread_should_quit_modified; // Signals when threads_should_quit is set.
56 #endif // !defined(_IMAGE_INPUT_H)