#include <string>
#include <thread>
+#include "shared/ref_counted_texture.h"
+#include "tweaked_inputs.h"
+
+class QSurface;
+
// 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 {
+class ImageInput : public sRGBSwitchingFlatInput {
public:
+ // For loading images.
+ // NOTE: You will need to call start_update_thread() yourself, once per program.
+ struct Image {
+ unsigned width, height;
+ UniqueTexture tex;
+ timespec last_modified;
+ };
+ static std::shared_ptr<const Image> load_image(const std::string &filename, const std::string &pathname);
+
+ // Actual members.
+
+ ImageInput(); // Construct an empty input, which can't be used until you call switch_image().
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();
+
+ // Switch to a different image. The image must be previously loaded using load_image().
+ void switch_image(const std::string &pathname);
+
+ std::string get_pathname() const { return pathname; }
+
+ static void start_update_thread(QSurface *surface);
+ static void end_update_thread();
private:
- struct Image {
- unsigned width, height;
- std::unique_ptr<uint8_t[]> pixels;
- timespec last_modified;
- };
-
- std::string filename, pathname;
+ std::string 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 void update_thread_func(QSurface *surface);
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::map<std::string, std::shared_ptr<const Image>> all_images; // Under all_images_lock.
- 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.
+ static std::thread update_thread;
+ static std::mutex update_thread_should_quit_mu;
+ static bool update_thread_should_quit; // Under thread_should_quit_mu.
+ static std::condition_variable update_thread_should_quit_modified; // Signals when threads_should_quit is set.
};
#endif // !defined(_IMAGE_INPUT_H)