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Code Issues Releases Wiki Activity

Codefix: Resolve CodeQL warnings by converting to size_t.

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This commit is contained in:
Peter Nelson
2024-08-10 17:26:52 +01:00
committed by Peter Nelson
parent d0d5c5c400
commit 367e508984
2 changed files with 27 additions and 41 deletions
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54
src/bmp.cpp
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@@ -80,17 +80,14 @@ static inline void SetStreamOffset(BmpBuffer *buffer, int offset)
*/
static inline bool BmpRead1(BmpBuffer *buffer, BmpInfo &info, BmpData &data)
{
uint x, y, i;
uint8_t pad = GB(4 - info.width / 8, 0, 2);
uint8_t *pixel_row;
uint8_t b;
for (y = info.height; y > 0; y--) {
x = 0;
pixel_row = &data.bitmap[(y - 1) * info.width];
for (uint y = info.height; y > 0; y--) {
uint x = 0;
uint8_t *pixel_row = &data.bitmap[(y - 1) * static_cast<size_t>(info.width)];
while (x < info.width) {
if (EndOfBuffer(buffer)) return false; // the file is shorter than expected
b = ReadByte(buffer);
for (i = 8; i > 0; i--) {
uint8_t b = ReadByte(buffer);
for (uint i = 8; i > 0; i--) {
if (x < info.width) *pixel_row++ = GB(b, i - 1, 1);
x++;
}
@@ -107,16 +104,13 @@ static inline bool BmpRead1(BmpBuffer *buffer, BmpInfo &info, BmpData &data)
*/
static inline bool BmpRead4(BmpBuffer *buffer, BmpInfo &info, BmpData &data)
{
uint x, y;
uint8_t pad = GB(4 - info.width / 2, 0, 2);
uint8_t *pixel_row;
uint8_t b;
for (y = info.height; y > 0; y--) {
x = 0;
pixel_row = &data.bitmap[(y - 1) * info.width];
for (uint y = info.height; y > 0; y--) {
uint x = 0;
uint8_t *pixel_row = &data.bitmap[(y - 1) * static_cast<size_t>(info.width)];
while (x < info.width) {
if (EndOfBuffer(buffer)) return false; // the file is shorter than expected
b = ReadByte(buffer);
uint8_t b = ReadByte(buffer);
*pixel_row++ = GB(b, 4, 4);
x++;
if (x < info.width) {
@@ -138,7 +132,7 @@ static inline bool BmpRead4Rle(BmpBuffer *buffer, BmpInfo &info, BmpData &data)
{
uint x = 0;
uint y = info.height - 1;
uint8_t *pixel = &data.bitmap[y * info.width];
uint8_t *pixel = &data.bitmap[y * static_cast<size_t>(info.width)];
while (y != 0 || x < info.width) {
if (EndOfBuffer(buffer)) return false; // the file is shorter than expected
@@ -149,7 +143,7 @@ static inline bool BmpRead4Rle(BmpBuffer *buffer, BmpInfo &info, BmpData &data)
case 0: // end of line
x = 0;
if (y == 0) return false;
pixel = &data.bitmap[--y * info.width];
pixel = &data.bitmap[--y * static_cast<size_t>(info.width)];
break;
case 1: // end of bitmap
@@ -210,14 +204,11 @@ static inline bool BmpRead4Rle(BmpBuffer *buffer, BmpInfo &info, BmpData &data)
*/
static inline bool BmpRead8(BmpBuffer *buffer, BmpInfo &info, BmpData &data)
{
uint i;
uint y;
uint8_t pad = GB(4 - info.width, 0, 2);
uint8_t *pixel;
for (y = info.height; y > 0; y--) {
for (uint y = info.height; y > 0; y--) {
if (EndOfBuffer(buffer)) return false; // the file is shorter than expected
pixel = &data.bitmap[(y - 1) * info.width];
for (i = 0; i < info.width; i++) *pixel++ = ReadByte(buffer);
uint8_t *pixel = &data.bitmap[(y - 1) * static_cast<size_t>(info.width)];
for (uint i = 0; i < info.width; i++) *pixel++ = ReadByte(buffer);
/* Padding for 32 bit align */
SkipBytes(buffer, pad);
}
@@ -231,7 +222,7 @@ static inline bool BmpRead8Rle(BmpBuffer *buffer, BmpInfo &info, BmpData &data)
{
uint x = 0;
uint y = info.height - 1;
uint8_t *pixel = &data.bitmap[y * info.width];
uint8_t *pixel = &data.bitmap[y * static_cast<size_t>(info.width)];
while (y != 0 || x < info.width) {
if (EndOfBuffer(buffer)) return false; // the file is shorter than expected
@@ -242,7 +233,7 @@ static inline bool BmpRead8Rle(BmpBuffer *buffer, BmpInfo &info, BmpData &data)
case 0: // end of line
x = 0;
if (y == 0) return false;
pixel = &data.bitmap[--y * info.width];
pixel = &data.bitmap[--y * static_cast<size_t>(info.width)];
break;
case 1: // end of bitmap
@@ -258,7 +249,7 @@ static inline bool BmpRead8Rle(BmpBuffer *buffer, BmpInfo &info, BmpData &data)
x += dx;
y -= dy;
pixel = &data.bitmap[y * info.width + x];
pixel = &data.bitmap[y * static_cast<size_t>(info.width) + x];
break;
}
@@ -291,12 +282,10 @@ static inline bool BmpRead8Rle(BmpBuffer *buffer, BmpInfo &info, BmpData &data)
*/
static inline bool BmpRead24(BmpBuffer *buffer, BmpInfo &info, BmpData &data)
{
uint x, y;
uint8_t pad = GB(4 - info.width * 3, 0, 2);
uint8_t *pixel_row;
for (y = info.height; y > 0; y--) {
pixel_row = &data.bitmap[(y - 1) * info.width * 3];
for (x = 0; x < info.width; x++) {
for (uint y = info.height; y > 0; --y) {
uint8_t *pixel_row = &data.bitmap[(y - 1) * static_cast<size_t>(info.width) * 3];
for (uint x = 0; x < info.width; ++x) {
if (EndOfBuffer(buffer)) return false; // the file is shorter than expected
*(pixel_row + 2) = ReadByte(buffer); // green
*(pixel_row + 1) = ReadByte(buffer); // blue
@@ -314,7 +303,6 @@ static inline bool BmpRead24(BmpBuffer *buffer, BmpInfo &info, BmpData &data)
*/
bool BmpReadHeader(BmpBuffer *buffer, BmpInfo &info, BmpData &data)
{
uint32_t header_size;
info = {};
/* Reading BMP header */
@@ -323,7 +311,7 @@ bool BmpReadHeader(BmpBuffer *buffer, BmpInfo &info, BmpData &data)
info.offset = ReadDword(buffer);
/* Reading info header */
header_size = ReadDword(buffer);
uint32_t header_size = ReadDword(buffer);
if (header_size < 12) return false; // info header should be at least 12 bytes long
info.os2_bmp = (header_size == 12); // OS/2 1.x or windows 2.x info header is 12 bytes long