PulseStudio/VoxelEngine
PulseStudio/VoxelEngine
1
1
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases 1 Wiki Activity

rle module moved to coders package

Browse Source
This commit is contained in:
MihailRis 2024-04-15 02:57:42 +03:00
parent 4a32b33bf3
commit d2a2f0e8ae
5 changed files with 108 additions and 108 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

90
src/coders/rle.cpp Normal file
View File

@ -0,0 +1,90 @@
#include "rle.h"
size_t rle::decode(const ubyte* src, size_t srclen, ubyte* dst) {
size_t offset = 0;
for (size_t i = 0; i < srclen;) {
ubyte len = src[i++];
ubyte c = src[i++];
for (size_t j = 0; j <= len; j++) {
dst[offset++] = c;
}
}
return offset;
}
size_t rle::encode(const ubyte* src, size_t srclen, ubyte* dst) {
if (srclen == 0) {
return 0;
}
size_t offset = 0;
ubyte counter = 0;
ubyte c = src[0];
for (size_t i = 1; i < srclen; i++) {
ubyte cnext = src[i];
if (cnext != c || counter == 255) {
dst[offset++] = counter;
dst[offset++] = c;
c = cnext;
counter = 0;
}
else {
counter++;
}
}
dst[offset++] = counter;
dst[offset++] = c;
return offset;
}
size_t extrle::decode(const ubyte* src, size_t srclen, ubyte* dst) {
size_t offset = 0;
for (size_t i = 0; i < srclen;) {
uint len = src[i++];
if (len & 0x80) {
len &= 0x7F;
len |= ((uint)src[i++]) << 7;
}
ubyte c = src[i++];
for (size_t j = 0; j <= len; j++) {
dst[offset++] = c;
}
}
return offset;
}
size_t extrle::encode(const ubyte* src, size_t srclen, ubyte* dst) {
if (srclen == 0) {
return 0;
}
size_t offset = 0;
uint counter = 0;
ubyte c = src[0];
for (size_t i = 1; i < srclen; i++) {
ubyte cnext = src[i];
if (cnext != c || counter == max_sequence) {
if (counter >= 0x80) {
dst[offset++] = 0x80 | (counter & 0x7F);
dst[offset++] = counter >> 7;
}
else {
dst[offset++] = counter;
}
dst[offset++] = c;
c = cnext;
counter = 0;
}
else {
counter++;
}
}
if (counter >= 0x80) {
dst[offset++] = 0x80 | (counter & 0x7F);
dst[offset++] = counter >> 7;
}
else {
dst[offset++] = counter;
}
dst[offset++] = c;
return offset;
}

17
src/coders/rle.h Normal file
View File

@ -0,0 +1,17 @@
#ifndef CODERS_RLE_H_
#define CODERS_RLE_H_
#include "../typedefs.h"
namespace rle {
size_t encode(const ubyte* src, size_t length, ubyte* dst);
size_t decode(const ubyte* src, size_t length, ubyte* dst);
}
namespace extrle {
constexpr uint max_sequence = 0x7FFF;
size_t encode(const ubyte* src, size_t length, ubyte* dst);
size_t decode(const ubyte* src, size_t length, ubyte* dst);
}
#endif // CODERS_RLE_H_

2
src/files/WorldFiles.cpp
View File

@ -2,6 +2,7 @@
#include "../coders/byte_utils.h"
#include "../coders/json.h"
#include "../coders/rle.h"
#include "../constants.h"
#include "../content/Content.h"
#include "../core_defs.h"
@ -19,7 +20,6 @@
#include "../voxels/voxel.h"
#include "../window/Camera.h"
#include "../world/World.h"
#include "rle.h"
#include <cassert>
#include <iostream>

90
src/files/rle.cpp
View File

@ -1,90 +0,0 @@
#include "rle.h"
size_t rle::decode(const ubyte* src, size_t srclen, ubyte* dst) {
size_t offset = 0;
for (size_t i = 0; i < srclen;) {
ubyte len = src[i++];
ubyte c = src[i++];
for (size_t j = 0; j <= len; j++) {
dst[offset++] = c;
}
}
return offset;
}
size_t rle::encode(const ubyte* src, size_t srclen, ubyte* dst) {
if (srclen == 0) {
return 0;
}
size_t offset = 0;
ubyte counter = 0;
ubyte c = src[0];
for (size_t i = 1; i < srclen; i++) {
ubyte cnext = src[i];
if (cnext != c || counter == 255) {
dst[offset++] = counter;
dst[offset++] = c;
c = cnext;
counter = 0;
}
else {
counter++;
}
}
dst[offset++] = counter;
dst[offset++] = c;
return offset;
}
size_t extrle::decode(const ubyte* src, size_t srclen, ubyte* dst) {
size_t offset = 0;
for (size_t i = 0; i < srclen;) {
uint len = src[i++];
if (len & 0x80) {
len &= 0x7F;
len |= ((uint)src[i++]) << 7;
}
ubyte c = src[i++];
for (size_t j = 0; j <= len; j++) {
dst[offset++] = c;
}
}
return offset;
}
size_t extrle::encode(const ubyte* src, size_t srclen, ubyte* dst) {
if (srclen == 0) {
return 0;
}
size_t offset = 0;
uint counter = 0;
ubyte c = src[0];
for (size_t i = 1; i < srclen; i++) {
ubyte cnext = src[i];
if (cnext != c || counter == max_sequence) {
if (counter >= 0x80) {
dst[offset++] = 0x80 | (counter & 0x7F);
dst[offset++] = counter >> 7;
}
else {
dst[offset++] = counter;
}
dst[offset++] = c;
c = cnext;
counter = 0;
}
else {
counter++;
}
}
if (counter >= 0x80) {
dst[offset++] = 0x80 | (counter & 0x7F);
dst[offset++] = counter >> 7;
}
else {
dst[offset++] = counter;
}
dst[offset++] = c;
return offset;
}

17
src/files/rle.h
View File

@ -1,17 +0,0 @@
#ifndef FILES_RLE_H_
#define FILES_RLE_H_
#include "../typedefs.h"
namespace rle {
size_t encode(const ubyte* src, size_t length, ubyte* dst);
size_t decode(const ubyte* src, size_t length, ubyte* dst);
}
namespace extrle {
constexpr uint max_sequence = 0x7FFF;
size_t encode(const ubyte* src, size_t length, ubyte* dst);
size_t decode(const ubyte* src, size_t length, ubyte* dst);
}
#endif // FILES_RLE_H_