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/**
* SPDX-FileCopyrightText: Copyright (C) 2024 ZeldaRET
* SPDX-License-Identifier: MPL-2.0
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#ifndef CONTAINER_H
#define CONTAINER_H
#include <stdbool.h>
#include <stdint.h>
#include "../codec/vadpcm.h"
typedef enum {
// Uncompressed
SAMPLE_TYPE_PCM16,
SAMPLE_TYPE_PCM8,
// Compressed
SAMPLE_TYPE_VADPCM,
SAMPLE_TYPE_VADPCM_HALF
} sample_data_type;
typedef struct {
const char *fext;
int (*read)(struct container_data *out, const char *path, bool matching);
int (*write)(struct container_data *out, const char *path, bool matching);
} container_spec;
typedef enum {
LOOP_NONE = 0,
LOOP_FORWARD = 1,
LOOP_FORWARD_BACKWARD = 2,
LOOP_BACKWARD = 3
} loop_type;
typedef struct {
uint16_t id;
loop_type type;
uint32_t start;
uint32_t end;
uint32_t fraction;
uint32_t num;
} container_loop;
typedef struct {
uint16_t id;
uint32_t frame_number;
char *name;
} container_marker;
typedef struct container_data {
// Sample details
double sample_rate;
unsigned int num_channels;
uint32_t byte_rate;
uint16_t block_align;
uint16_t bit_depth; // also called sample_size
uint32_t num_samples; // also apparently called num_frames? but that's wrong
// Instrument details
int8_t base_note; // [0, 127]
int8_t fine_tune; // [-50, 50]
int8_t gain;
int8_t key_low;
int8_t key_hi;
int8_t vel_low;
int8_t vel_hi;
// Sample data, possibly compressed
sample_data_type data_type;
void *data;
size_t data_size;
unsigned num_loops;
container_loop *loops;
// VADPCM-specific data
struct {
// VADPCM codebook
int16_t book_version;
ALADPCMbookhead book_header;
int16_t *book_data;
bool has_book;
// VADPCM loop data
int16_t loop_version;
unsigned num_loops;
ALADPCMloop *loops;
} vadpcm;
} container_data;
int
container_destroy(container_data *data);
#endif
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