/**
 * @file CbTable.h
 * @brief Line type lookup tables for NTSC/PAL video signal generation
 *
 * Defines the state machine for each scanline (263 lines NTSC, 313 lines PAL).
 * Each entry specifies the line type: sync pulses, blanking, colorburst, active video.
 *
 * Original Copyright 2015 <>< Charles Lohr
 * ESP32 Port 2024
 */

#ifndef CBTABLE_H
#define CBTABLE_H

#include <stdint.h>
#include "sdkconfig.h"

// Line type definitions
#define FT_STA_d 0     // Short Sync A
#define FT_STB_d 1     // Long Sync B
#define FT_B_d 2       // Black/Blanking
#define FT_SRA_d 3     // Short to long sync transition
#define FT_SRB_d 4     // Long to short sync transition
#define FT_LIN_d 5     // Active video line
#define FT_CLOSE 6     // End frame
#define FT_MAX_d 7     // Number of line types

// Line lookup tables (each nibble is a line type)
extern const uint8_t CbLookupPAL[313];
extern const uint8_t CbLookupNTSC[263];

// Select the appropriate table based on video standard
#ifdef CONFIG_VIDEO_PAL
    #define VIDEO_LINES 625
    #define CbLookup CbLookupPAL
#else
    #define VIDEO_LINES 525
    #define CbLookup CbLookupNTSC
#endif

#endif // CBTABLE_H