graph_config.c

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#include <stdio.h>
#include <errno.h>
#include <string.h>
 
#include <graph.h>
#include <graph_config.h>
 
int graph_make_config(int mode, int interlace, int ffmd, int x, int y, int flicker_filter, char *config)
{
 
        // Save the current mode value.
        switch (mode)
        {
 
                case GRAPH_MODE_NTSC:                   sprintf(config, "GRAPH_MODE_NTSC:");            break;
                case GRAPH_MODE_PAL:                    sprintf(config, "GRAPH_MODE_PAL:");                     break;
                case GRAPH_MODE_HDTV_480P:              sprintf(config, "GRAPH_MODE_HDTV_480P:");       break;
                case GRAPH_MODE_HDTV_576P:              sprintf(config, "GRAPH_MODE_HDTV_576P:");       break;
                case GRAPH_MODE_HDTV_720P:              sprintf(config, "GRAPH_MODE_HDTV_720P:");       break;
                case GRAPH_MODE_HDTV_1080I:             sprintf(config, "GRAPH_MODE_HDTV_1080I:");      break;
                case GRAPH_MODE_VGA_640_60:             sprintf(config, "GRAPH_MODE_VGA_640_60:");      break;
                case GRAPH_MODE_VGA_640_72:             sprintf(config, "GRAPH_MODE_VGA_640_72:");      break;
                case GRAPH_MODE_VGA_640_75:             sprintf(config, "GRAPH_MODE_VGA_640_75:");      break;
                case GRAPH_MODE_VGA_640_85:             sprintf(config, "GRAPH_MODE_VGA_640_85:");      break;
                case GRAPH_MODE_VGA_800_56:             sprintf(config, "GRAPH_MODE_VGA_800_56:");      break;
                case GRAPH_MODE_VGA_800_60:             sprintf(config, "GRAPH_MODE_VGA_800_60:");      break;
                case GRAPH_MODE_VGA_800_72:             sprintf(config, "GRAPH_MODE_VGA_800_72:");      break;
                case GRAPH_MODE_VGA_800_75:             sprintf(config, "GRAPH_MODE_VGA_800_75:");      break;
                case GRAPH_MODE_VGA_800_85:             sprintf(config, "GRAPH_MODE_VGA_800_85:");      break;
                case GRAPH_MODE_VGA_1024_60:    sprintf(config, "GRAPH_MODE_VGA_1024_60:");     break;
                case GRAPH_MODE_VGA_1024_70:    sprintf(config, "GRAPH_MODE_VGA_1024_70:");     break;
                case GRAPH_MODE_VGA_1024_75:    sprintf(config, "GRAPH_MODE_VGA_1024_75:");     break;
                case GRAPH_MODE_VGA_1024_85:    sprintf(config, "GRAPH_MODE_VGA_1024_85:");     break;
                case GRAPH_MODE_VGA_1280_60:    sprintf(config, "GRAPH_MODE_VGA_1280_60:");     break;
                case GRAPH_MODE_VGA_1280_75:    sprintf(config, "GRAPH_MODE_VGA_1280_75:");     break;
                default:                                                sprintf(config, "GRAPH_MODE_AUTO:");            break;
 
        }
 
        // Save the current interlacing mode.
        switch (interlace)
        {
 
                case GRAPH_MODE_NONINTERLACED:  sprintf(config, "GRAPH_MODE_NONINTERLACED:");           break;
                case GRAPH_MODE_INTERLACED:     //Fall through
                default:                        sprintf(config, "GRAPH_MODE_INTERLACED:");              break;
 
        }
 
        // Save the current field mode.
        switch (ffmd)
        {
 
                case GRAPH_MODE_FRAME:  sprintf(config, "GRAPH_MODE_FRAME:");           break;
                case GRAPH_MODE_FIELD:  //Fall through
                default:                sprintf(config, "GRAPH_MODE_FIELD:");   break;
 
        }
 
        // Save status of flicker filter.
        switch (flicker_filter)
        {
 
                case GRAPH_ENABLE:      sprintf(config, "GRAPH_ENABLE:");               break;
                case GRAPH_DISABLE:     //Fall through
                default:                sprintf(config, "GRAPH_DISABLE:");      break;
 
        }
 
        // Save the current screen offset.
        sprintf(config, "%d:",x);
        sprintf(config, "%d:",y);
 
        // End function.
        return 0;
 
}
 
int graph_set_config(char *config)
{
        char *temp0, *temp1;
        int mode, interlace, ffmd;
        //int x, y; //Not used
        int flicker_filter;
 
        // Extract the mode config value.
        temp0 = config; temp1 = strtok(temp0, ":"); temp0 += strlen(temp1) + 1;
 
        // Parse the mode config value.
        if (strcmp(temp1, "GRAPH_MODE_AUTO"        ) == 0) { mode = GRAPH_MODE_AUTO;        } else
        if (strcmp(temp1, "GRAPH_MODE_NTSC"        ) == 0) { mode = GRAPH_MODE_NTSC;        } else
        if (strcmp(temp1, "GRAPH_MODE_PAL"         ) == 0) { mode = GRAPH_MODE_PAL;         } else
        if (strcmp(temp1, "GRAPH_MODE_HDTV_480P"   ) == 0) { mode = GRAPH_MODE_HDTV_480P;   } else
        if (strcmp(temp1, "GRAPH_MODE_HDTV_576P"   ) == 0) { mode = GRAPH_MODE_HDTV_576P;   } else
        if (strcmp(temp1, "GRAPH_MODE_HDTV_720P"   ) == 0) { mode = GRAPH_MODE_HDTV_720P;   } else
        if (strcmp(temp1, "GRAPH_MODE_HDTV_1080I"  ) == 0) { mode = GRAPH_MODE_HDTV_1080I;  } else
        if (strcmp(temp1, "GRAPH_MODE_VGA_640_60"  ) == 0) { mode = GRAPH_MODE_VGA_640_60;  } else
        if (strcmp(temp1, "GRAPH_MODE_VGA_640_72"  ) == 0) { mode = GRAPH_MODE_VGA_640_72;  } else
        if (strcmp(temp1, "GRAPH_MODE_VGA_640_75"  ) == 0) { mode = GRAPH_MODE_VGA_640_75;  } else
        if (strcmp(temp1, "GRAPH_MODE_VGA_640_85"  ) == 0) { mode = GRAPH_MODE_VGA_640_85;  } else
        if (strcmp(temp1, "GRAPH_MODE_VGA_800_56"  ) == 0) { mode = GRAPH_MODE_VGA_800_56;  } else
        if (strcmp(temp1, "GRAPH_MODE_VGA_800_60"  ) == 0) { mode = GRAPH_MODE_VGA_800_60;  } else
        if (strcmp(temp1, "GRAPH_MODE_VGA_800_72"  ) == 0) { mode = GRAPH_MODE_VGA_800_72;  } else
        if (strcmp(temp1, "GRAPH_MODE_VGA_800_75"  ) == 0) { mode = GRAPH_MODE_VGA_800_75;  } else
        if (strcmp(temp1, "GRAPH_MODE_VGA_800_85"  ) == 0) { mode = GRAPH_MODE_VGA_800_85;  } else
        if (strcmp(temp1, "GRAPH_MODE_VGA_1024_60" ) == 0) { mode = GRAPH_MODE_VGA_1024_60; } else
        if (strcmp(temp1, "GRAPH_MODE_VGA_1024_70" ) == 0) { mode = GRAPH_MODE_VGA_1024_70; } else
        if (strcmp(temp1, "GRAPH_MODE_VGA_1024_75" ) == 0) { mode = GRAPH_MODE_VGA_1024_75; } else
        if (strcmp(temp1, "GRAPH_MODE_VGA_1024_85" ) == 0) { mode = GRAPH_MODE_VGA_1024_85; } else
        if (strcmp(temp1, "GRAPH_MODE_VGA_1280_60" ) == 0) { mode = GRAPH_MODE_VGA_1280_60; } else
        if (strcmp(temp1, "GRAPH_MODE_VGA_1280_75" ) == 0) { mode = GRAPH_MODE_VGA_1280_75; }
        else
        {
 
                mode = GRAPH_MODE_AUTO;
 
        }
 
        // Read the interlace config value.
        temp1 = strtok(temp0, ":"); temp0 += strlen(temp1) + 1;
 
        // Parse the interlace config value.
        if (strcmp(temp1, "GRAPH_MODE_NONINTERLACED" ) == 0) { interlace = GRAPH_MODE_NONINTERLACED; } else
        if (strcmp(temp1, "GRAPH_MODE_INTERLACED" ) == 0) { interlace = GRAPH_MODE_INTERLACED; }
        else
        {
 
                interlace = GRAPH_MODE_INTERLACED;
 
        }
 
        // Read the field mode config value.
        temp1 = strtok(temp0, ":"); temp0 += strlen(temp1) + 1;
 
        // Parse the field mode config value.
        if (strcmp(temp1, "GRAPH_MODE_FRAME" ) == 0) { ffmd = GRAPH_MODE_FRAME; } else
        if (strcmp(temp1, "GRAPH_MODE_FIELD" ) == 0) { ffmd = GRAPH_MODE_FIELD; }
        else
        {
 
                ffmd = GRAPH_MODE_FIELD;
 
        }
 
        // Read the flicker_filter config value.
        temp1 = strtok(temp0, ":"); temp0 += strlen(temp1) + 1;
 
        // Parse the flicker_filter config value.
        if (strcmp(temp1, "GRAPH_DISABLE" ) == 0) { flicker_filter = GRAPH_DISABLE; } else
        if (strcmp(temp1, "GRAPH_ENABLE"  ) == 0) { flicker_filter = GRAPH_ENABLE;  }
        else
        {
 
                flicker_filter = GRAPH_ENABLE;
 
        }
 
        // Disable flicker filter if the mode is noninterlaced.
        if (interlace == GRAPH_MODE_NONINTERLACED)
        {
 
                flicker_filter = GRAPH_DISABLE;
 
        }
 
        // Read the x config value.
        temp1 = strtok(temp0, ":"); temp0 += strlen(temp1) + 1;
 
        // Parse the x config value.
        // x = (int)strtol(temp1,NULL,10); //Not used
 
        // Read the y config value.
        temp1 = strtok(temp0, ":"); temp0 += strlen(temp1) + 1;
 
        // Parse the y config value.
        // y = (int)strtol(temp1,NULL,10); //Not used
 
        graph_set_mode(interlace,mode,ffmd,flicker_filter);
        // End function.
        return 0;
 
}
 
int graph_load_config(char *filename)
{
 
        FILE *infile; char config[512];
 
        // Open the config file.
        if ((infile = fopen(filename, "r")) < 0)
        {
 
                return -ENOENT;
 
        }
 
        // Read the config file contents.
        if (fread(config, 1, sizeof(config), infile) < 0)
        {
 
                return -EIO;
 
        }
 
        // Close the config file.
        if (fclose(infile) < 0)
        {
 
                return -1;
 
        }
 
        // Set the current mode config information.
        return graph_set_config(config);
 
}
 
int graph_save_config(char *filename)
{
 
        FILE *outfile; char config[512];
 
        // Get the current mode config information.
        graph_get_config(config);
 
        // Open the config file.
        if ((outfile = fopen(filename, "w")) < 0)
        {
 
                return -ENOENT;
 
        }
 
        // Write the config file contents.
        if (fwrite(config, 1, strlen(config), outfile) < 0)
        {
 
                return -EIO;
 
        }
 
        // Close the config file.
        if (fclose(outfile) < 0)
        {
 
                return -1;
 
        }
 
        // End function.
        return 0;
 
}