moonlight-stream/moonlight-common-c
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Fix bugs in ByteBuffer API and add BbAdvanceBuffer()

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This commit is contained in:
Cameron Gutman 2019-02-08 19:01:51 -08:00
parent dc21e28e1f
commit 924fdaf2db
2 changed files with 14 additions and 5 deletions
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17
src/ByteBuffer.c
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@ -1,8 +1,7 @@
#include "ByteBuffer.h"
void BbInitializeWrappedBuffer(PBYTE_BUFFER buff, char* data, int offset, int length, int byteOrder) {
buff->buffer = data;
buff->offset = offset;
buff->buffer = data + offset;
buff->length = length;
buff->position = 0;
buff->byteOrder = byteOrder;
@ -38,6 +37,16 @@ static int byteSwapShort(PBYTE_BUFFER buff, short s) {
}
}
int BbAdvanceBuffer(PBYTE_BUFFER buff, int offset) {
if (buff->position + offset > buff->length) {
return 0;
}
buff->position += offset;
return 1;
}
// Get a byte from the byte buffer
int BbGet(PBYTE_BUFFER buff, char* c) {
if (buff->position + sizeof(*c) > buff->length) {
@ -52,7 +61,7 @@ int BbGet(PBYTE_BUFFER buff, char* c) {
// Get a short from the byte buffer
int BbGetShort(PBYTE_BUFFER buff, short* s) {
if (buff->position + sizeof(*s) >= buff->length) {
if (buff->position + sizeof(*s) > buff->length) {
return 0;
}
@ -144,4 +153,4 @@ int BbPut(PBYTE_BUFFER buff, char c) {
buff->position += sizeof(c);
return 1;
}
}

2
src/ByteBuffer.h
View File

@ -19,13 +19,13 @@
typedef struct _BYTE_BUFFER {
char* buffer;
unsigned int offset;
unsigned int length;
unsigned int position;
unsigned int byteOrder;
} BYTE_BUFFER, *PBYTE_BUFFER;
void BbInitializeWrappedBuffer(PBYTE_BUFFER buff, char* data, int offset, int length, int byteOrder);
int BbAdvanceBuffer(PBYTE_BUFFER buff, int offset);
int BbGet(PBYTE_BUFFER buff, char* c);
int BbGetShort(PBYTE_BUFFER buff, short* s);