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/*
* Copyright (c) 2018 Vasile Vilvoiu (YO7JBP) <vasi.vilvoiu@gmail.com>
*
* libsstv is free software; you can redistribute it and/or modify
* it under the terms of the MIT license. See LICENSE for details.
*/
#ifndef _SSTV_H_
#define _SSTV_H_
#include "libsstv.h"
/*
* Mode timings and frequency descriptors
*/
typedef struct {
uint32_t hz;
uint32_t phase_delta;
} sstv_freq_desc_t;
typedef struct {
uint32_t usec;
uint32_t usamp;
} sstv_timing_desc_t;
typedef struct {
/* Header */
struct {
sstv_timing_desc_t time;
sstv_freq_desc_t freq;
} leader_tone;
struct {
sstv_timing_desc_t time;
sstv_freq_desc_t freq;
} break_tone;
struct {
sstv_timing_desc_t time;
sstv_freq_desc_t sep_freq;
sstv_freq_desc_t low_freq;
sstv_freq_desc_t high_freq;
} vis;
/* Mode */
struct {
sstv_timing_desc_t time;
sstv_freq_desc_t freq;
} sync;
struct {
sstv_timing_desc_t time;
sstv_freq_desc_t freq;
} porch;
struct {
sstv_timing_desc_t time;
sstv_freq_desc_t low_freq;
sstv_freq_desc_t bandwidth;
/* lookup table from value to delta-phase */
uint32_t val_phase_delta[256];
} pixel;
} sstv_mode_descriptor_t;
/*
* Memory management
*/
extern sstv_malloc_t sstv_malloc_user;
extern sstv_free_t sstv_free_user;
/*
* Utility functions
*/
extern sstv_error_t
sstv_get_mode_descriptor(sstv_mode_t mode, uint32_t sample_rate, sstv_mode_descriptor_t *desc);
#endif
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