hvirtual/plugins/histogram/histogram.h

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#ifndef HISTOGRAM_H
#define HISTOGRAM_H


#include "histogram.inc"
#include "histogramconfig.h"
#include "histogramwindow.inc"
#include "loadbalance.h"
#include "plugincolors.h"
#include "pluginvclient.h"


class HistogramMain : public PluginVClient
{
public:
        HistogramMain(PluginServer *server);
        ~HistogramMain();

        int process_buffer(VFrame *frame,
                int64_t start_position,
                double frame_rate);
        int is_realtime();
        int load_defaults();
        int save_defaults();
        void save_data(KeyFrame *keyframe);
        void read_data(KeyFrame *keyframe);
        void update_gui();
        void render_gui(void *data);
        int calculate_use_opengl();
        int handle_opengl();

        PLUGIN_CLASS_MEMBERS(HistogramConfig, HistogramThread)

// Interpolate quantized transfer table to linear output
        float calculate_linear(float input, int mode, int do_value);
        float calculate_smooth(float input, int subscript);
// Convert input to smoothed output by looking up in smooth table.
        float calculate_curve(float input);
// Calculate automatic settings
        void calculate_automatic(VFrame *data);
// Calculate histogram.
// Value is only calculated for preview.
        void calculate_histogram(VFrame *data, int do_value);
// Calculate the linear, smoothed, lookup curves
        void tabulate_curve(int subscript, int use_value);




        YUV yuv;
        VFrame *input, *output;
        HistogramEngine *engine;
        int *lookup[HISTOGRAM_MODES];
        float *smoothed[HISTOGRAM_MODES];
        float *linear[HISTOGRAM_MODES];
// No value applied to this
        int *preview_lookup[HISTOGRAM_MODES];
        int *accum[HISTOGRAM_MODES];
// Input point being dragged or edited
        int current_point;
// Current channel being viewed
        int mode;
        int dragging_point;
        int point_x_offset;
        int point_y_offset;
};

class HistogramPackage : public LoadPackage
{
public:
        HistogramPackage();
        int start, end;
};

class HistogramUnit : public LoadClient
{
public:
        HistogramUnit(HistogramEngine *server, HistogramMain *plugin);
        ~HistogramUnit();
        void process_package(LoadPackage *package);
        HistogramEngine *server;
        HistogramMain *plugin;
        int *accum[5];
};

class HistogramEngine : public LoadServer
{
public:
        HistogramEngine(HistogramMain *plugin, 
                int total_clients, 
                int total_packages);
        void process_packages(int operation, VFrame *data, int do_value);
        void init_packages();
        LoadClient* new_client();
        LoadPackage* new_package();
        HistogramMain *plugin;
        int total_size;


        int operation;
        enum
        {
                HISTOGRAM,
                APPLY
        };
        VFrame *data;
        int do_value;
};











#endif

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