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/mix_effect.h>
12 #include <movit/ycbcr_input.h>
17 #include "jpeg_frame.h"
18 #include "ycbcr_converter.h"
25 enum CacheMissBehavior {
26 DECODE_IF_NOT_IN_CACHE,
27 RETURN_NULLPTR_IF_NOT_IN_CACHE
30 // This is, well, a hack. We hope for no collisions.
31 inline JPEGID create_jpegid_for_interpolated_fade(unsigned stream_idx, int64_t pts, unsigned secondary_stream_idx, int64_t secondary_pts)
34 id.stream_idx = (stream_idx << 8) | secondary_stream_idx;
36 uint64_t rot = secondary_stream_idx;
37 rot = (rot << 32) | (rot >> 32);
38 id.pts = pts ^ int64_t(rot);
39 id.interpolated = true;
43 std::string filename_for_frame(unsigned stream_idx, int64_t pts);
44 std::shared_ptr<Frame> decode_jpeg(const std::string &filename);
45 std::shared_ptr<Frame> decode_jpeg_with_cache(JPEGID id, CacheMissBehavior cache_miss_behavior, bool *did_decode);
47 class JPEGFrameView : public QGLWidget {
51 JPEGFrameView(QWidget *parent);
53 void setFrame(unsigned stream_idx, int64_t pts, bool interpolated, int secondary_stream_idx = -1, int64_t secondary_pts = -1, float fade_alpha = 0.0f);
54 static void insert_interpolated_frame(JPEGID id, std::shared_ptr<Frame> frame);
56 void mousePressEvent(QMouseEvent *event) override;
58 unsigned get_stream_idx() const { return current_stream_idx; }
60 void setDecodedFrame(std::shared_ptr<Frame> frame, std::shared_ptr<Frame> secondary_frame, float fade_alpha);
61 void set_overlay(const std::string &text); // Blank for none.
63 static void shutdown();
69 void initializeGL() override;
70 void resizeGL(int width, int height) override;
71 void paintGL() override;
74 // The stream index of the latest frame we displayed.
75 unsigned current_stream_idx = 0;
77 std::unique_ptr<YCbCrConverter> ycbcr_converter;
78 movit::EffectChain *current_chain = nullptr; // Owned by ycbcr_converter.
80 std::shared_ptr<Frame> current_frame; // So that we hold on to the pixels.
81 std::shared_ptr<Frame> current_secondary_frame; // Same.
83 static constexpr int overlay_base_width = 16, overlay_base_height = 16;
84 int overlay_width = overlay_base_width, overlay_height = overlay_base_height;
85 std::unique_ptr<QImage> overlay_image; // If nullptr, no overlay.
86 std::unique_ptr<movit::EffectChain> overlay_chain; // Just to get the overlay on screen in the easiest way possible.
87 movit::FlatInput *overlay_input;
88 bool overlay_input_needs_refresh = false;
90 int gl_width, gl_height;
92 static std::thread jpeg_decoder_thread;
95 #endif // !defined(_JPEG_FRAME_VIEW_H)