Ejemplos de smooth_resize_bitmap en C++ (Cpp)

Ejemplo n.º 1

Archivo: test_resize.c Proyecto: victor2002/rockbox_victor_clipplus

/* this is the plugin entry point */
enum plugin_status plugin_start(const void* parameter)
{
    (void)parameter;

    b = rb->lcd_framebuffer;

    rb->lcd_set_background(LCD_RGBPACK(0,0,0));
    rb->lcd_clear_display(); // TODO: Optimizes this by e.g. invalidating rects

    input_bmp.data = (char*)input_bmp_data;
    output_bmp.data = (char*)output_bmp_data;

    int ret = rb->read_bmp_file("/test.bmp", &input_bmp, sizeof(input_bmp_data),
                                FORMAT_NATIVE, NULL);

    if (ret < 0) {
        rb->splash(HZ, "Could not load /test.bmp");
        return PLUGIN_ERROR;
    }

    int button;
    output_bmp.width = 50;
    output_bmp.height = 50;

    DEBUGF("input_bmp_data starts at %p\n", input_bmp_data);
    DEBUGF("output_bmp_data starts at %p\n", output_bmp_data);

    int scale_algorithm = 0;

    while(1) {
        rb->lcd_clear_display();
        rb->lcd_bitmap(input_bmp_data, 0, 0, input_bmp.width, input_bmp.height);

        switch ( scale_algorithm ) {
            case 0:
                smooth_resize_bitmap(&input_bmp, &output_bmp);
                rb->lcd_putsxy(0,0,"smooth_resize_bitmap");
                break;
            case 1:
                simple_resize_bitmap(&input_bmp, &output_bmp);
                rb->lcd_putsxy(0,0,"simple_resize_bitmap");
                break;
        }

        rb->lcd_bitmap(output_bmp_data, 0, 100, output_bmp.width,
                       output_bmp.height);

        rb->lcd_update();
        button = pluginlib_getaction(HZ, plugin_contexts,
                        ARRAYLEN(plugin_contexts));
        switch (button) {
            case BUTTON_QUIT:
                return PLUGIN_OK;
            case SIZE_INCREASE:
            case SIZE_INCREASE_REPEAT:
                if (output_bmp.width < MAX_OUTPUT_WIDTH - 2)
                    output_bmp.width += 2;
                if (output_bmp.height < MAX_OUTPUT_HEIGHT - 2)
                    output_bmp.height += 2;
                break;

            case SIZE_DECREASE:
            case SIZE_DECREASE_REPEAT:
                if (output_bmp.width > 2) output_bmp.width -= 2;
                if (output_bmp.height > 2) output_bmp.height -= 2;
                break;

            case WIDTH_INCREASE:
            case WIDTH_INCREASE_REPEAT:
                if (output_bmp.width < MAX_OUTPUT_WIDTH - 2)
                    output_bmp.width += 2;
                break;

            case WIDTH_DECREASE:
            case WIDTH_DECREASE_REPEAT:
                if (output_bmp.width > 2) output_bmp.width -= 2;
                break;

            case CHANGE_MODE:
                scale_algorithm = (scale_algorithm+1)%2;
                break;
        }
    }
    return PLUGIN_OK;
}

Ejemplo n.º 2

Archivo: ppmviewer.c Proyecto: CrashSerious/rockbox_psgroove

/* this is the plugin entry point */
enum plugin_status plugin_start(const void* parameter)
{
    static char filename[MAX_PATH];
    int fd;

    int cols; 
    int rows; 
    int maxval; 
   
    int result;
    
    struct bitmap small_bitmap, orig_bitmap;
    
    if(!parameter) return PLUGIN_ERROR;

    size_t buffer_size;
    char *audiobuf = rb->plugin_get_buffer(&buffer_size);
    if (buffer_size < PPM_MAXSIZE + LCD_WIDTH * LCD_HEIGHT + 1)
    {
        /* steal from audiobuffer if plugin buffer is too small */
        audiobuf = rb->plugin_get_audio_buffer(&buffer_size);

        if (buffer_size < PPM_MAXSIZE + LCD_WIDTH * LCD_HEIGHT + 1)
        {
            rb->splash(HZ, "Not enough memory");
            return PLUGIN_ERROR;
        }
    }

    /* align on 16 bits */
    audiobuf = (char *)(((uintptr_t)audiobuf + 1) & ~1);
    buffer = (fb_data *)audiobuf;
    lcd_buf = (fb_data*) (audiobuf + PPM_MAXSIZE);

    rb->strcpy(filename, parameter);
    
    fd = rb->open(filename, O_RDONLY);
    if (fd < 0)
    {
        ppm_error("Couldnt open file: %s, %d", filename, fd);
        return PLUGIN_ERROR;
    }

    result = read_ppm(fd, &cols, &rows, &maxval);

    rb->close(fd);
    if(result == PLUGIN_ERROR) return PLUGIN_ERROR;

    orig_bitmap.width = cols;
    orig_bitmap.height = rows;
    orig_bitmap.data = (char*)buffer;
    
    if (cols > LCD_WIDTH || rows > LCD_HEIGHT)
    {
        if (cols > LCD_WIDTH) {
            small_bitmap.width = LCD_WIDTH;
            small_bitmap.height = 
                (int)(((float)LCD_WIDTH / (float)cols) * (float)rows);
            
        } else { /* rows > LCD_HEIGHT */
            
            small_bitmap.width = 
                (int)(((float)LCD_HEIGHT / (float)rows) * (float)cols);
            small_bitmap.height = LCD_HEIGHT;            
        } 
        small_bitmap.data = (char*)lcd_buf;

        smooth_resize_bitmap( &orig_bitmap, &small_bitmap );
        
        rb->lcd_bitmap((fb_data*)small_bitmap.data, 0, 0,
                       small_bitmap.width, small_bitmap.height);
    } else {
        rb->lcd_bitmap((fb_data*)orig_bitmap.data, 0, 0, cols, rows);   
    }
    rb->lcd_update();
    rb->button_get(true);
    
    return PLUGIN_OK;
}