1 #ifndef _JPEG_FRAME_VIEW_H
2 #define _JPEG_FRAME_VIEW_H 1
9 #include <movit/effect_chain.h>
10 #include <movit/flat_input.h>
11 #include <movit/ycbcr_input.h>
16 #include "jpeg_frame.h"
17 #include "ycbcr_converter.h"
24 enum CacheMissBehavior {
25 DECODE_IF_NOT_IN_CACHE,
26 RETURN_NULLPTR_IF_NOT_IN_CACHE
29 std::string filename_for_frame(unsigned stream_idx, int64_t pts);
30 std::shared_ptr<Frame> decode_jpeg(const std::string &filename);
31 std::shared_ptr<Frame> decode_jpeg_with_cache(JPEGID id, CacheMissBehavior cache_miss_behavior, bool *did_decode);
33 class JPEGFrameView : public QGLWidget {
37 JPEGFrameView(QWidget *parent);
39 void setFrame(unsigned stream_idx, int64_t pts, bool interpolated);
40 static void insert_interpolated_frame(unsigned stream_idx, int64_t pts, std::shared_ptr<Frame> frame);
42 void mousePressEvent(QMouseEvent *event) override;
44 unsigned get_stream_idx() const { return current_stream_idx; }
46 void setDecodedFrame(std::shared_ptr<Frame> frame);
47 void set_overlay(const std::string &text); // Blank for none.
49 static void shutdown();
55 void initializeGL() override;
56 void resizeGL(int width, int height) override;
57 void paintGL() override;
60 // The stream index of the latest frame we displayed.
61 unsigned current_stream_idx = 0;
63 std::unique_ptr<YCbCrConverter> ycbcr_converter;
64 movit::EffectChain *current_chain = nullptr; // Owned by ycbcr_converter.
66 std::shared_ptr<Frame> current_frame; // So that we hold on to the pixels.
68 static constexpr int overlay_base_width = 16, overlay_base_height = 16;
69 int overlay_width = overlay_base_width, overlay_height = overlay_base_height;
70 std::unique_ptr<QImage> overlay_image; // If nullptr, no overlay.
71 std::unique_ptr<movit::EffectChain> overlay_chain; // Just to get the overlay on screen in the easiest way possible.
72 movit::FlatInput *overlay_input;
73 bool overlay_input_needs_refresh = false;
75 int gl_width, gl_height;
77 static std::thread jpeg_decoder_thread;
80 #endif // !defined(_JPEG_FRAME_VIEW_H)