hvirtual/plugins/zoomblur/zoomblur.C

Go to the documentation of this file.

#include <math.h>
#include <stdint.h>
#include <string.h>

#include "bcdisplayinfo.h"
#include "bcsignals.h"
#include "clip.h"
#include "bchash.h"
#include "filexml.h"
#include "keyframe.h"
#include "language.h"
#include "loadbalance.h"
#include "picon_png.h"
#include "pluginvclient.h"
#include "vframe.h"



class ZoomBlurMain;
class ZoomBlurEngine;





class ZoomBlurConfig
{
public:
        ZoomBlurConfig();

        int equivalent(ZoomBlurConfig &that);
        void copy_from(ZoomBlurConfig &that);
        void interpolate(ZoomBlurConfig &prev, 
                ZoomBlurConfig &next, 
                long prev_frame, 
                long next_frame, 
                long current_frame);

        int x;
        int y;
        int radius;
        int steps;
        int r;
        int g;
        int b;
        int a;
};



class ZoomBlurSize : public BC_ISlider
{
public:
        ZoomBlurSize(ZoomBlurMain *plugin, 
                int x, 
                int y, 
                int *output,
                int min,
                int max);
        int handle_event();
        ZoomBlurMain *plugin;
        int *output;
};

class ZoomBlurToggle : public BC_CheckBox
{
public:
        ZoomBlurToggle(ZoomBlurMain *plugin, 
                int x, 
                int y, 
                int *output,
                char *string);
        int handle_event();
        ZoomBlurMain *plugin;
        int *output;
};

class ZoomBlurWindow : public BC_Window
{
public:
        ZoomBlurWindow(ZoomBlurMain *plugin, int x, int y);
        ~ZoomBlurWindow();

        int create_objects();
        int close_event();

        ZoomBlurSize *x, *y, *radius, *steps;
        ZoomBlurToggle *r, *g, *b, *a;
        ZoomBlurMain *plugin;
};



PLUGIN_THREAD_HEADER(ZoomBlurMain, ZoomBlurThread, ZoomBlurWindow)


// Output coords for a layer of blurring
// Used for OpenGL only
class ZoomBlurLayer
{
public:
        ZoomBlurLayer() {};
        float x1, y1, x2, y2;
};

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

        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();
        int handle_opengl();

        PLUGIN_CLASS_MEMBERS(ZoomBlurConfig, ZoomBlurThread)

        void delete_tables();
        VFrame *input, *output, *temp;
        ZoomBlurEngine *engine;
        int **scale_y_table;
        int **scale_x_table;
        ZoomBlurLayer *layer_table;
        int table_entries;
        int need_reconfigure;
// The accumulation buffer is needed because 8 bits isn't precise enough
        unsigned char *accum;
};

class ZoomBlurPackage : public LoadPackage
{
public:
        ZoomBlurPackage();
        int y1, y2;
};

class ZoomBlurUnit : public LoadClient
{
public:
        ZoomBlurUnit(ZoomBlurEngine *server, ZoomBlurMain *plugin);
        void process_package(LoadPackage *package);
        ZoomBlurEngine *server;
        ZoomBlurMain *plugin;
};

class ZoomBlurEngine : public LoadServer
{
public:
        ZoomBlurEngine(ZoomBlurMain *plugin, 
                int total_clients, 
                int total_packages);
        void init_packages();
        LoadClient* new_client();
        LoadPackage* new_package();
        ZoomBlurMain *plugin;
};



















REGISTER_PLUGIN(ZoomBlurMain)



ZoomBlurConfig::ZoomBlurConfig()
{
        x = 50;
        y = 50;
        radius = 10;
        steps = 10;
        r = 1;
        g = 1;
        b = 1;
        a = 1;
}

int ZoomBlurConfig::equivalent(ZoomBlurConfig &that)
{
        return 
                x == that.x &&
                y == that.y &&
                radius == that.radius &&
                steps == that.steps &&
                r == that.r &&
                g == that.g &&
                b == that.b &&
                a == that.a;
}

void ZoomBlurConfig::copy_from(ZoomBlurConfig &that)
{
        x = that.x;
        y = that.y;
        radius = that.radius;
        steps = that.steps;
        r = that.r;
        g = that.g;
        b = that.b;
        a = that.a;
}

void ZoomBlurConfig::interpolate(ZoomBlurConfig &prev, 
        ZoomBlurConfig &next, 
        long prev_frame, 
        long next_frame, 
        long current_frame)
{
        double next_scale = (double)(current_frame - prev_frame) / (next_frame - prev_frame);
        double prev_scale = (double)(next_frame - current_frame) / (next_frame - prev_frame);
        this->x = (int)(prev.x * prev_scale + next.x * next_scale + 0.5);
        this->y = (int)(prev.y * prev_scale + next.y * next_scale + 0.5);
        this->radius = (int)(prev.radius * prev_scale + next.radius * next_scale + 0.5);
        this->steps = (int)(prev.steps * prev_scale + next.steps * next_scale + 0.5);
        r = prev.r;
        g = prev.g;
        b = prev.b;
        a = prev.a;
}









PLUGIN_THREAD_OBJECT(ZoomBlurMain, ZoomBlurThread, ZoomBlurWindow)



ZoomBlurWindow::ZoomBlurWindow(ZoomBlurMain *plugin, int x, int y)
 : BC_Window(plugin->gui_string, 
        x,
        y,
        230, 
        340, 
        230, 
        340, 
        0, 
        1)
{
        this->plugin = plugin; 
}

ZoomBlurWindow::~ZoomBlurWindow()
{
}

int ZoomBlurWindow::create_objects()
{
        int x = 10, y = 10;

        add_subwindow(new BC_Title(x, y, _("X:")));
        y += 20;
        add_subwindow(this->x = new ZoomBlurSize(plugin, x, y, &plugin->config.x, 0, 100));
        y += 30;
        add_subwindow(new BC_Title(x, y, _("Y:")));
        y += 20;
        add_subwindow(this->y = new ZoomBlurSize(plugin, x, y, &plugin->config.y, 0, 100));
        y += 30;
        add_subwindow(new BC_Title(x, y, _("Radius:")));
        y += 20;
        add_subwindow(radius = new ZoomBlurSize(plugin, x, y, &plugin->config.radius, -100, 100));
        y += 30;
        add_subwindow(new BC_Title(x, y, _("Steps:")));
        y += 20;
        add_subwindow(steps = new ZoomBlurSize(plugin, x, y, &plugin->config.steps, 1, 100));
        y += 30;
        add_subwindow(r = new ZoomBlurToggle(plugin, x, y, &plugin->config.r, _("Red")));
        y += 30;
        add_subwindow(g = new ZoomBlurToggle(plugin, x, y, &plugin->config.g, _("Green")));
        y += 30;
        add_subwindow(b = new ZoomBlurToggle(plugin, x, y, &plugin->config.b, _("Blue")));
        y += 30;
        add_subwindow(a = new ZoomBlurToggle(plugin, x, y, &plugin->config.a, _("Alpha")));
        y += 30;

        show_window();
        flush();
        return 0;
}

int ZoomBlurWindow::close_event()
{
// Set result to 1 to indicate a plugin side close
        set_done(1);
        return 1;
}










ZoomBlurToggle::ZoomBlurToggle(ZoomBlurMain *plugin, 
        int x, 
        int y, 
        int *output, 
        char *string)
 : BC_CheckBox(x, y, *output, string)
{
        this->plugin = plugin;
        this->output = output;
}

int ZoomBlurToggle::handle_event()
{
        *output = get_value();
        plugin->send_configure_change();
        return 1;
}







ZoomBlurSize::ZoomBlurSize(ZoomBlurMain *plugin, 
        int x, 
        int y, 
        int *output,
        int min,
        int max)
 : BC_ISlider(x, y, 0, 200, 200, min, max, *output)
{
        this->plugin = plugin;
        this->output = output;
}
int ZoomBlurSize::handle_event()
{
        *output = get_value();
        plugin->send_configure_change();
        return 1;
}










ZoomBlurMain::ZoomBlurMain(PluginServer *server)
 : PluginVClient(server)
{
        PLUGIN_CONSTRUCTOR_MACRO
        engine = 0;
        scale_x_table = 0;
        scale_y_table = 0;
        layer_table = 0;
        table_entries = 0;
        accum = 0;
        need_reconfigure = 1;
        temp = 0;
}

ZoomBlurMain::~ZoomBlurMain()
{
        PLUGIN_DESTRUCTOR_MACRO
        if(engine) delete engine;
        delete_tables();
        if(accum) delete [] accum;
        if(temp) delete temp;
}

char* ZoomBlurMain::plugin_title() { return N_("Zoom Blur"); }
int ZoomBlurMain::is_realtime() { return 1; }


NEW_PICON_MACRO(ZoomBlurMain)

SHOW_GUI_MACRO(ZoomBlurMain, ZoomBlurThread)

SET_STRING_MACRO(ZoomBlurMain)

RAISE_WINDOW_MACRO(ZoomBlurMain)

LOAD_CONFIGURATION_MACRO(ZoomBlurMain, ZoomBlurConfig)

void ZoomBlurMain::delete_tables()
{
        if(scale_x_table)
        {
                for(int i = 0; i < table_entries; i++)
                        delete [] scale_x_table[i];
                delete [] scale_x_table;
        }

        if(scale_y_table)
        {
                for(int i = 0; i < table_entries; i++)
                        delete [] scale_y_table[i];
                delete [] scale_y_table;
        }

        delete [] layer_table;
        scale_x_table = 0;
        scale_y_table = 0;
        layer_table = 0;
        table_entries = 0;
}

int ZoomBlurMain::process_buffer(VFrame *frame,
                int64_t start_position,
                double frame_rate)
{
        need_reconfigure |= load_configuration();


SET_TRACE
        read_frame(frame,
                0,
                get_source_position(),
                get_framerate(),
                get_use_opengl());

SET_TRACE

// Generate tables here.  The same table is used by many packages to render
// each horizontal stripe.  Need to cover the entire output range in  each
// table to avoid green borders
        if(need_reconfigure)
        {
SET_TRACE
                float w = frame->get_w();
                float h = frame->get_h();
                float center_x = (float)config.x / 100 * w;
                float center_y = (float)config.y / 100 * h;
                float radius = (float)(100 + config.radius) / 100;
                float min_w, min_h;
                float max_w, max_h;
                int steps = config.steps ? config.steps : 1;
                float min_x1;
                float min_y1;
                float min_x2;
                float min_y2;
                float max_x1;
                float max_y1;
                float max_x2;
                float max_y2;
                
SET_TRACE

// printf("ZoomBlurMain::process_realtime 1 %d %d\n", 
// config.x,
// config.y);

                center_x = (center_x - w / 2) * (1.0 - radius) + w / 2;
                center_y = (center_y - h / 2) * (1.0 - radius) + h / 2;
                min_w = w * radius;
                min_h = h * radius;
                max_w = w;
                max_h = h;
                min_x1 = center_x - min_w / 2;
                min_y1 = center_y - min_h / 2;
                min_x2 = center_x + min_w / 2;
                min_y2 = center_y + min_h / 2;
                max_x1 = 0;
                max_y1 = 0;
                max_x2 = w;
                max_y2 = h;

SET_TRACE
// printf("ZoomBlurMain::process_realtime 2 w=%f radius=%f center_x=%f\n", 
// w,
// radius,
// center_x);


// Dimensions of outermost rectangle

                delete_tables();
                table_entries = steps;
                scale_x_table = new int*[steps];
                scale_y_table = new int*[steps];
                layer_table = new ZoomBlurLayer[table_entries];

SET_TRACE
                for(int i = 0; i < steps; i++)
                {
                        float fraction = (float)i / steps;
                        float inv_fraction = 1.0 - fraction;
                        float out_x1 = min_x1 * fraction + max_x1 * inv_fraction;
                        float out_x2 = min_x2 * fraction + max_x2 * inv_fraction;
                        float out_y1 = min_y1 * fraction + max_y1 * inv_fraction;
                        float out_y2 = min_y2 * fraction + max_y2 * inv_fraction;
                        float out_w = out_x2 - out_x1;
                        float out_h = out_y2 - out_y1;
                        if(out_w < 0) out_w = 0;
                        if(out_h < 0) out_h = 0;
                        float scale_x = (float)w / out_w;
                        float scale_y = (float)h / out_h;

                        int *x_table;
                        int *y_table;
                        scale_y_table[i] = y_table = new int[(int)(h + 1)];
                        scale_x_table[i] = x_table = new int[(int)(w + 1)];
SET_TRACE
                        layer_table[i].x1 = out_x1;
                        layer_table[i].y1 = out_y1;
                        layer_table[i].x2 = out_x2;
                        layer_table[i].y2 = out_y2;
SET_TRACE

                        for(int j = 0; j < h; j++)
                        {
                                y_table[j] = (int)((j - out_y1) * scale_y);
                        }
                        for(int j = 0; j < w; j++)
                        {
                                x_table[j] = (int)((j - out_x1) * scale_x);
//printf("ZoomBlurMain::process_realtime %d %d\n", j, x_table[j]);
                        }
                }
SET_TRACE
                need_reconfigure = 0;
        }

SET_TRACE
        if(get_use_opengl()) return run_opengl();

SET_TRACE



        if(!engine) engine = new ZoomBlurEngine(this,
                get_project_smp() + 1,
                get_project_smp() + 1);
        if(!accum) accum = new unsigned char[frame->get_w() * 
                frame->get_h() *
                cmodel_components(frame->get_color_model()) *
                MAX(sizeof(int), sizeof(float))];

        this->input = frame;
        this->output = frame;


        if(!temp) temp = new VFrame(0,
                frame->get_w(),
                frame->get_h(),
                frame->get_color_model());
        temp->copy_from(frame);
        this->input = temp;

        bzero(accum, 
                frame->get_w() * 
                frame->get_h() *
                cmodel_components(frame->get_color_model()) *
                MAX(sizeof(int), sizeof(float)));
        engine->process_packages();
        return 0;
}


void ZoomBlurMain::update_gui()
{
        if(thread)
        {
                load_configuration();
                thread->window->lock_window();
                thread->window->x->update(config.x);
                thread->window->y->update(config.y);
                thread->window->radius->update(config.radius);
                thread->window->steps->update(config.steps);
                thread->window->r->update(config.r);
                thread->window->g->update(config.g);
                thread->window->b->update(config.b);
                thread->window->a->update(config.a);
                thread->window->unlock_window();
        }
}


int ZoomBlurMain::load_defaults()
{
        char directory[1024], string[1024];
// set the default directory
        sprintf(directory, "%szoomblur.rc", BCASTDIR);

// load the defaults
        defaults = new BC_Hash(directory);
        defaults->load();

        config.x = defaults->get("X", config.x);
        config.y = defaults->get("Y", config.y);
        config.radius = defaults->get("RADIUS", config.radius);
        config.steps = defaults->get("STEPS", config.steps);
        config.r = defaults->get("R", config.r);
        config.g = defaults->get("G", config.g);
        config.b = defaults->get("B", config.b);
        config.a = defaults->get("A", config.a);
        return 0;
}


int ZoomBlurMain::save_defaults()
{
        defaults->update("X", config.x);
        defaults->update("Y", config.y);
        defaults->update("RADIUS", config.radius);
        defaults->update("STEPS", config.steps);
        defaults->update("R", config.r);
        defaults->update("G", config.g);
        defaults->update("B", config.b);
        defaults->update("A", config.a);
        defaults->save();
        return 0;
}



void ZoomBlurMain::save_data(KeyFrame *keyframe)
{
        FileXML output;

// cause data to be stored directly in text
        output.set_shared_string(keyframe->data, MESSAGESIZE);
        output.tag.set_title("ZOOMBLUR");

        output.tag.set_property("X", config.x);
        output.tag.set_property("Y", config.y);
        output.tag.set_property("RADIUS", config.radius);
        output.tag.set_property("STEPS", config.steps);
        output.tag.set_property("R", config.r);
        output.tag.set_property("G", config.g);
        output.tag.set_property("B", config.b);
        output.tag.set_property("A", config.a);
        output.append_tag();
        output.tag.set_title("/ZOOMBLUR");
        output.append_tag();
        output.terminate_string();
}

void ZoomBlurMain::read_data(KeyFrame *keyframe)
{
        FileXML input;

        input.set_shared_string(keyframe->data, strlen(keyframe->data));

        int result = 0;

        while(!result)
        {
                result = input.read_tag();

                if(!result)
                {
                        if(input.tag.title_is("ZOOMBLUR"))
                        {
                                config.x = input.tag.get_property("X", config.x);
                                config.y = input.tag.get_property("Y", config.y);
                                config.radius = input.tag.get_property("RADIUS", config.radius);
                                config.steps = input.tag.get_property("STEPS", config.steps);
                                config.r = input.tag.get_property("R", config.r);
                                config.g = input.tag.get_property("G", config.g);
                                config.b = input.tag.get_property("B", config.b);
                                config.a = input.tag.get_property("A", config.a);
                        }
                }
        }
}

#ifdef HAVE_GL
static void draw_box(float x1, float y1, float x2, float y2)
{
        glBegin(GL_QUADS);
        glVertex3f(x1, y1, 0.0);
        glVertex3f(x2, y1, 0.0);
        glVertex3f(x2, y2, 0.0);
        glVertex3f(x1, y2, 0.0);
        glEnd();
}
#endif

int ZoomBlurMain::handle_opengl()
{
#ifdef HAVE_GL
        get_output()->to_texture();
        get_output()->enable_opengl();
        get_output()->init_screen();
        get_output()->bind_texture(0);

        int is_yuv = cmodel_is_yuv(get_output()->get_color_model());
        glClearColor(0.0, 0.0, 0.0, 0.0);
        glClear(GL_COLOR_BUFFER_BIT);

// Draw unselected channels
        glEnable(GL_BLEND);
        glBlendFunc(GL_ONE, GL_ONE);
        glDrawBuffer(GL_BACK);

        if(!config.r || !config.g || !config.b || !config.a)
        {
                glColor4f(config.r ? 0 : 1, 
                        config.g ? 0 : 1, 
                        config.b ? 0 : 1, 
                        config.a ? 0 : 1);
                get_output()->draw_texture();
        }
        glAccum(GL_LOAD, 1.0);

// Blur selected channels
        float fraction = 1.0 / config.steps;
        for(int i = 0; i < config.steps; i++)
        {
                glClear(GL_COLOR_BUFFER_BIT);
                glColor4f(config.r ? 1 : 0, 
                        config.g ? 1 : 0, 
                        config.b ? 1 : 0, 
                        config.a ? 1 : 0);

                get_output()->draw_texture(0,
                        0,
                        get_output()->get_w(),
                        get_output()->get_h(),
                        layer_table[i].x1,
                        get_output()->get_h() - layer_table[i].y1,
                        layer_table[i].x2,
                        get_output()->get_h() - layer_table[i].y2,
                        1);

// Fill YUV black
                glDisable(GL_TEXTURE_2D);
                if(cmodel_is_yuv(get_output()->get_color_model()))
                {
                        glColor4f(config.r ? 0.0 : 0, 
                                config.g ? 0.5 : 0, 
                                config.b ? 0.5 : 0, 
                                config.a ? 1.0 : 0);
                        float center_x1 = 0.0;
                        float center_x2 = get_output()->get_w();
                        if(layer_table[i].x1 > 0)
                        {
                                center_x1 = layer_table[i].x1;
                                draw_box(0, 0, layer_table[i].x1, -get_output()->get_h());
                        }
                        if(layer_table[i].x2 < get_output()->get_w())
                        {
                                center_x2 = layer_table[i].x2;
                                draw_box(layer_table[i].x2, 0, get_output()->get_w(), -get_output()->get_h());
                        }
                        if(layer_table[i].y1 > 0)
                        {
                                draw_box(center_x1, 
                                        -get_output()->get_h(), 
                                        center_x2, 
                                        -get_output()->get_h() + layer_table[i].y1);
                        }
                        if(layer_table[i].y2 < get_output()->get_h())
                        {
                                draw_box(center_x1, 
                                        -get_output()->get_h() + layer_table[i].y2, 
                                        center_x2, 
                                        0);
                        }
                }


                glAccum(GL_ACCUM, fraction);
                glEnable(GL_TEXTURE_2D);
                glColor4f(config.r ? 1 : 0, 
                        config.g ? 1 : 0, 
                        config.b ? 1 : 0, 
                        config.a ? 1 : 0);
        }

        glDisable(GL_BLEND);
        glReadBuffer(GL_BACK);
        glDisable(GL_TEXTURE_2D);
        glAccum(GL_RETURN, 1.0);

        glColor4f(1, 1, 1, 1);
        get_output()->set_opengl_state(VFrame::SCREEN);
#endif
}














ZoomBlurPackage::ZoomBlurPackage()
 : LoadPackage()
{
}




ZoomBlurUnit::ZoomBlurUnit(ZoomBlurEngine *server, 
        ZoomBlurMain *plugin)
 : LoadClient(server)
{
        this->plugin = plugin;
        this->server = server;
}


#define BLEND_LAYER(COMPONENTS, TYPE, TEMP_TYPE, MAX, DO_YUV) \
{ \
        const int chroma_offset = (DO_YUV ? ((MAX + 1) / 2) : 0); \
        for(int j = pkg->y1; j < pkg->y2; j++) \
        { \
                TEMP_TYPE *out_row = (TEMP_TYPE*)plugin->accum + COMPONENTS * w * j; \
                int in_y = y_table[j]; \
 \
/* Blend image */ \
                if(in_y >= 0 && in_y < h) \
                { \
                        TYPE *in_row = (TYPE*)plugin->input->get_rows()[in_y]; \
                        for(int k = 0; k < w; k++) \
                        { \
                                int in_x = x_table[k]; \
/* Blend pixel */ \
                                if(in_x >= 0 && in_x < w) \
                                { \
                                        int in_offset = in_x * COMPONENTS; \
                                        *out_row++ += in_row[in_offset]; \
                                        if(DO_YUV) \
                                        { \
                                                *out_row++ += in_row[in_offset + 1]; \
                                                *out_row++ += in_row[in_offset + 2]; \
                                        } \
                                        else \
                                        { \
                                                *out_row++ += (TEMP_TYPE)in_row[in_offset + 1]; \
                                                *out_row++ += (TEMP_TYPE)in_row[in_offset + 2]; \
                                        } \
                                        if(COMPONENTS == 4) \
                                                *out_row++ += in_row[in_offset + 3]; \
                                } \
/* Blend nothing */ \
                                else \
                                { \
                                        out_row++; \
                                        if(DO_YUV) \
                                        { \
                                                *out_row++ += chroma_offset; \
                                                *out_row++ += chroma_offset; \
                                        } \
                                        else \
                                        { \
                                                out_row += 2; \
                                        } \
                                        if(COMPONENTS == 4) out_row++; \
                                } \
                        } \
                } \
                else \
                if(DO_YUV) \
                { \
                        for(int k = 0; k < w; k++) \
                        { \
                                out_row++; \
                                *out_row++ += chroma_offset; \
                                *out_row++ += chroma_offset; \
                                if(COMPONENTS == 4) out_row++; \
                        } \
                } \
        } \
 \
/* Copy just selected blurred channels to output and combine with original \
        unblurred channels */ \
        if(i == plugin->config.steps - 1) \
        { \
                for(int j = pkg->y1; j < pkg->y2; j++) \
                { \
                        TEMP_TYPE *in_row = (TEMP_TYPE*)plugin->accum + COMPONENTS * w * j; \
                        TYPE *in_backup = (TYPE*)plugin->input->get_rows()[j]; \
                        TYPE *out_row = (TYPE*)plugin->output->get_rows()[j]; \
                        for(int k = 0; k < w; k++) \
                        { \
                                if(do_r) \
                                { \
                                        *out_row++ = (*in_row++ * fraction) / 0x10000; \
                                        in_backup++; \
                                } \
                                else \
                                { \
                                        *out_row++ = *in_backup++; \
                                        in_row++; \
                                } \
 \
                                if(DO_YUV) \
                                { \
                                        if(do_g) \
                                        { \
                                                *out_row++ = ((*in_row++ * fraction) / 0x10000); \
                                                in_backup++; \
                                        } \
                                        else \
                                        { \
                                                *out_row++ = *in_backup++; \
                                                in_row++; \
                                        } \
 \
                                        if(do_b) \
                                        { \
                                                *out_row++ = ((*in_row++ * fraction) / 0x10000); \
                                                in_backup++; \
                                        } \
                                        else \
                                        { \
                                                *out_row++ = *in_backup++; \
                                                in_row++; \
                                        } \
                                } \
                                else \
                                { \
                                        if(do_g) \
                                        { \
                                                *out_row++ = (*in_row++ * fraction) / 0x10000; \
                                                in_backup++; \
                                        } \
                                        else \
                                        { \
                                                *out_row++ = *in_backup++; \
                                                in_row++; \
                                        } \
 \
                                        if(do_b) \
                                        { \
                                                *out_row++ = (*in_row++ * fraction) / 0x10000; \
                                                in_backup++; \
                                        } \
                                        else \
                                        { \
                                                *out_row++ = *in_backup++; \
                                                in_row++; \
                                        } \
                                } \
 \
                                if(COMPONENTS == 4) \
                                { \
                                        if(do_a) \
                                        { \
                                                *out_row++ = (*in_row++ * fraction) / 0x10000; \
                                                in_backup++; \
                                        } \
                                        else \
                                        { \
                                                *out_row++ = *in_backup++; \
                                                in_row++; \
                                        } \
                                } \
                        } \
                } \
        } \
}

void ZoomBlurUnit::process_package(LoadPackage *package)
{
        ZoomBlurPackage *pkg = (ZoomBlurPackage*)package;
        int h = plugin->output->get_h();
        int w = plugin->output->get_w();
        int do_r = plugin->config.r;
        int do_g = plugin->config.g;
        int do_b = plugin->config.b;
        int do_a = plugin->config.a;

        int fraction = 0x10000 / plugin->config.steps;
        for(int i = 0; i < plugin->config.steps; i++)
        {
                int *x_table = plugin->scale_x_table[i];
                int *y_table = plugin->scale_y_table[i];

                switch(plugin->input->get_color_model())
                {
                        case BC_RGB888:
                                BLEND_LAYER(3, uint8_t, int, 0xff, 0)
                                break;
                        case BC_RGB_FLOAT:
                                BLEND_LAYER(3, float, float, 1, 0)
                                break;
                        case BC_RGBA_FLOAT:
                                BLEND_LAYER(4, float, float, 1, 0)
                                break;
                        case BC_RGBA8888:
                                BLEND_LAYER(4, uint8_t, int, 0xff, 0)
                                break;
                        case BC_RGB161616:
                                BLEND_LAYER(3, uint16_t, int, 0xffff, 0)
                                break;
                        case BC_RGBA16161616:
                                BLEND_LAYER(4, uint16_t, int, 0xffff, 0)
                                break;
                        case BC_YUV888:
                                BLEND_LAYER(3, uint8_t, int, 0xff, 1)
                                break;
                        case BC_YUVA8888:
                                BLEND_LAYER(4, uint8_t, int, 0xff, 1)
                                break;
                        case BC_YUV161616:
                                BLEND_LAYER(3, uint16_t, int, 0xffff, 1)
                                break;
                        case BC_YUVA16161616:
                                BLEND_LAYER(4, uint16_t, int, 0xffff, 1)
                                break;
                }
        }
}






ZoomBlurEngine::ZoomBlurEngine(ZoomBlurMain *plugin, 
        int total_clients, 
        int total_packages)
 : LoadServer(total_clients, total_packages)
{
        this->plugin = plugin;
}

void ZoomBlurEngine::init_packages()
{
        for(int i = 0; i < get_total_packages(); i++)
        {
                ZoomBlurPackage *package = (ZoomBlurPackage*)get_package(i);
                package->y1 = plugin->output->get_h() * i / get_total_packages();
                package->y2 = plugin->output->get_h() * (i + 1) / get_total_packages();
        }
}

LoadClient* ZoomBlurEngine::new_client()
{
        return new ZoomBlurUnit(this, plugin);
}

LoadPackage* ZoomBlurEngine::new_package()
{
        return new ZoomBlurPackage;
}

---