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//
// h64e-model.c
// H64E-2
//
// Created by dianshi on 3/13/20.
// Copyright © 2020 dianshi. All rights reserved.
//
#include "h64e-model.h"
int h64e_si_init(H64E_stream_in *in, ssize_t size)
{
in->size = size;
in->cur_size = 0;
in->buf = malloc(size);
return 0;
}
//return amount of copied bytes
int h64e_si_data_in(H64E_stream_in *in, uint8_t *data, size_t size)
{
ssize_t start = in->cur_size;
ssize_t end = start+size;
ssize_t len = 0;
if (end > in->size)
{
end = in->size;
}
len = end-start;
memcpy(in->buf, data, len);
return (int)len;
}
int h64e_si_data_out(H64E_stream_in *in, uint8_t *data, size_t size)
{
ssize_t len=0;
if (size<in->cur_size)
{
len = size;
} else {
len = in->cur_size;
}
memcpy(data,in->buf,len);
memmove(in->buf,in->buf[len],len);
in->cur_size -= len;
return len;
}
int h64e_so_init(H64E_stream_out *out, ssize_t size)
{
out->size = size;
out->cur_size = 0;
out->buf = malloc(size);
return 0;
}
int h64e_so_data_in(H64E_stream_in *out, uint8_t *data, size_t size)
{
ssize_t start = out->cur_size;
ssize_t end = start+size;
ssize_t len = 0;
if (end > out->size)
{
end = out->size;
}
len = end-start;
memcpy(out->buf, data, len);
return (int)len;
}
int h64e_so_data_out(H64E_stream_in *out, uint8_t *data, size_t size)
{
ssize_t len=0;
if (size<out->cur_size)
{
len = size;
} else {
len = out->cur_size;
}
memcpy(data,out->buf,len);
memmove(out->buf,out->buf[len],len);
out->cur_size -= len;
return len;
}
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