looper/file_backend.hpp

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#pragma once
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
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#include <optional>
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#include <stddef.h>
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#include <string.h>
#include <map>
#include <stdlib.h>
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#include <SDL.h>
#include <vector>
extern "C" {
#include <vgmstream.h>
}
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#include "log.hpp"
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enum class SeekType {
SET,
CUR,
END
};
class File {
protected:
size_t len;
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int64_t pos;
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public:
const char *name;
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File();
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inline virtual void open(const char *fname) { name = fname; }
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inline virtual void close() { }
virtual size_t read(void *ptr, size_t size, size_t len) = 0;
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virtual void seek(int64_t pos, SeekType seek_type) = 0;
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virtual size_t get_len();
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virtual int64_t get_pos() = 0;
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inline virtual bool is_open() {
return false;
}
inline virtual ~File() {
if (is_open()) close();
}
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};
class CFile : public File {
protected:
FILE *file;
public:
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CFile();
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void open(const char *fname) override;
void close() override;
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size_t read(void *ptr, size_t size, size_t len) override;
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void seek(int64_t pos, SeekType seek_type) override;
int64_t get_pos() override;
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bool is_open() override;
};
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class MemFile : public File {
void *ptr;
size_t len;
int64_t pos;
public:
MemFile();
void open(const char *path) override;
void close() override;
size_t read(void *ptr, size_t size, size_t len) override;
void seek(int64_t pos, SeekType seek_type) override;
int64_t get_pos() override;
bool is_open() override;
size_t get_len() override;
};
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class HttpFile : public File {
std::vector<uint8_t> data;
public:
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HttpFile();
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void open(const char *url) override;
void close() override;
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size_t read(void *ptr, size_t size, size_t len) override;
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void seek(int64_t pos, SeekType type) override;
int64_t get_pos() override;
bool is_open() override;
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};
#ifdef __ANDROID__
class AndroidFile : public File {
protected:
void *handle;
public:
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AndroidFile();
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void open(const char *fname) override;
void close() override;
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size_t read(void *ptr, size_t size, size_t len) override;
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void seek(int64_t pos, SeekType seek_type) override;
int64_t get_pos() override;
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bool is_open() override;
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};
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#endif
#ifdef __ANDROID__
#define FILE_TYPE AndroidFile
#else
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#define FILE_TYPE MemFile
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#endif
STREAMFILE *get_sf_from_file(File *file);
SDL_RWops *get_sdl_file(File *file);
File *open_file(const char *fname);
File *open_url(const char *url);