Send refresh frames every 100 ms or so, so that the client does not think we are...

[nageru] / jpeg_frame_view.h

diff --git a/jpeg_frame_view.h b/jpeg_frame_view.h
index 8b2c93c8d5dbe245b19c4d80d38f108e2247e1c6..b8e26c4a3a98f35170d73e8445098e11488d7d01 100644 (file)
--- a/jpeg_frame_view.h
+++ b/jpeg_frame_view.h
@@ -8,26 +8,38 @@
 
 #include <movit/effect_chain.h>
 #include <movit/flat_input.h>
+#include <movit/mix_effect.h>
 #include <movit/ycbcr_input.h>
 
 #include <memory>
+#include <thread>
+
+#include "jpeg_frame.h"
+#include "ycbcr_converter.h"
 
 struct JPEGID {
        unsigned stream_idx;
        int64_t pts;
        bool interpolated;
 };
-struct Frame {
-       std::unique_ptr<uint8_t[]> y, cb, cr;
-       unsigned width, height;
-       unsigned chroma_subsampling_x, chroma_subsampling_y;
-       unsigned pitch_y, pitch_chroma;
-};
 enum CacheMissBehavior {
        DECODE_IF_NOT_IN_CACHE,
        RETURN_NULLPTR_IF_NOT_IN_CACHE
 };
 
+// This is, well, a hack. We hope for no collisions.
+inline JPEGID create_jpegid_for_interpolated_fade(unsigned stream_idx, int64_t pts, unsigned secondary_stream_idx, int64_t secondary_pts)
+{
+       JPEGID id;
+       id.stream_idx = (stream_idx << 8) | secondary_stream_idx;
+
+       uint64_t rot = secondary_stream_idx;
+       rot = (rot << 32) | (rot >> 32);
+       id.pts = pts ^ int64_t(rot);
+       id.interpolated = true;
+       return id;
+}
+
 std::string filename_for_frame(unsigned stream_idx, int64_t pts);
 std::shared_ptr<Frame> decode_jpeg(const std::string &filename);
 std::shared_ptr<Frame> decode_jpeg_with_cache(JPEGID id, CacheMissBehavior cache_miss_behavior, bool *did_decode);
@@ -38,16 +50,18 @@ class JPEGFrameView : public QGLWidget {
 public:
        JPEGFrameView(QWidget *parent);
 
-       void setFrame(unsigned stream_idx, int64_t pts, bool interpolated);
-       static void insert_interpolated_frame(unsigned stream_idx, int64_t pts, std::shared_ptr<Frame> frame);
+       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);
+       static void insert_interpolated_frame(JPEGID id, std::shared_ptr<Frame> frame);
 
        void mousePressEvent(QMouseEvent *event) override;
 
        unsigned get_stream_idx() const { return current_stream_idx; }
 
-       void setDecodedFrame(std::shared_ptr<Frame> frame);
+       void setDecodedFrame(std::shared_ptr<Frame> frame, std::shared_ptr<Frame> secondary_frame, float fade_alpha);
        void set_overlay(const std::string &text);  // Blank for none.
 
+       static void shutdown();
+
 signals:
        void clicked();
 
@@ -60,10 +74,11 @@ private:
        // The stream index of the latest frame we displayed.
        unsigned current_stream_idx = 0;
 
-       std::unique_ptr<movit::EffectChain> chain;
+       std::unique_ptr<YCbCrConverter> ycbcr_converter;
+       movit::EffectChain *current_chain = nullptr;  // Owned by ycbcr_converter.
+
        std::shared_ptr<Frame> current_frame;  // So that we hold on to the pixels.
-       movit::YCbCrInput *ycbcr_input;
-       movit::YCbCrFormat ycbcr_format;
+       std::shared_ptr<Frame> current_secondary_frame;  // Same.
 
        static constexpr int overlay_base_width = 16, overlay_base_height = 16;
        int overlay_width = overlay_base_width, overlay_height = overlay_base_height;
@@ -73,6 +88,8 @@ private:
        bool overlay_input_needs_refresh = false;
 
        int gl_width, gl_height;
+
+       static std::thread jpeg_decoder_thread;
 };
 
 #endif  // !defined(_JPEG_FRAME_VIEW_H)