/**
 * @file broadcast_tables.h
 * @brief Premodulated waveform lookup tables for NTSC/PAL RF broadcast
 *
 * These tables contain 1408-bit patterns per color, chosen as an exact harmonic
 * of both NTSC chroma (3.579545 MHz) and Channel 3 luma (61.25 MHz).
 *
 * Original Copyright 2015 <>< Charles Lohr
 * ESP32 Port 2024
 */

#ifndef BROADCAST_TABLES_H
#define BROADCAST_TABLES_H

#include <stdint.h>

#define PREMOD_ENTRIES 44
#define PREMOD_ENTRIES_WITH_SPILL 51
#define PREMOD_SIZE 18

// Color level indices for the premodulated table
#define SYNC_LEVEL 17
#define COLORBURST_LEVEL 16
#define BLACK_LEVEL 0
#define GRAY_LEVEL 1
#define WHITE_LEVEL 10

// Premodulated table: 918 entries (51 * 18)
// Each entry is a 32-bit word containing the precomputed RF waveform
extern const uint32_t premodulated_table[918];

#endif // BROADCAST_TABLES_H