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Kernel: Buffer supports little-endian

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This commit is contained in:
winlin 2020-05-22 18:14:15 +08:00
parent ab2d15d524
commit 2bd0e1ce43
4 changed files with 139 additions and 0 deletions
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102
trunk/src/kernel/srs_kernel_buffer.cpp
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@ -128,6 +128,18 @@ int16_t SrsBuffer::read_2bytes()
return value;
}
int16_t SrsBuffer::read_le2bytes()
{
srs_assert(require(2));
int16_t value;
char* pp = (char*)&value;
pp[0] = *p++;
pp[1] = *p++;
return value;
}
int32_t SrsBuffer::read_3bytes()
{
srs_assert(require(3));
@ -141,6 +153,19 @@ int32_t SrsBuffer::read_3bytes()
return value;
}
int32_t SrsBuffer::read_le3bytes()
{
srs_assert(require(3));
int32_t value = 0x00;
char* pp = (char*)&value;
pp[0] = *p++;
pp[1] = *p++;
pp[2] = *p++;
return value;
}
int32_t SrsBuffer::read_4bytes()
{
srs_assert(require(4));
@ -155,6 +180,20 @@ int32_t SrsBuffer::read_4bytes()
return value;
}
int32_t SrsBuffer::read_le4bytes()
{
srs_assert(require(4));
int32_t value;
char* pp = (char*)&value;
pp[0] = *p++;
pp[1] = *p++;
pp[2] = *p++;
pp[3] = *p++;
return value;
}
int64_t SrsBuffer::read_8bytes()
{
srs_assert(require(8));
@ -173,6 +212,24 @@ int64_t SrsBuffer::read_8bytes()
return value;
}
int64_t SrsBuffer::read_le8bytes()
{
srs_assert(require(8));
int64_t value;
char* pp = (char*)&value;
pp[0] = *p++;
pp[1] = *p++;
pp[2] = *p++;
pp[3] = *p++;
pp[4] = *p++;
pp[5] = *p++;
pp[6] = *p++;
pp[7] = *p++;
return value;
}
string SrsBuffer::read_string(int len)
{
srs_assert(require(len));
@ -210,6 +267,15 @@ void SrsBuffer::write_2bytes(int16_t value)
*p++ = pp[0];
}
void SrsBuffer::write_le2bytes(int16_t value)
{
srs_assert(require(2));
char* pp = (char*)&value;
*p++ = pp[0];
*p++ = pp[1];
}
void SrsBuffer::write_4bytes(int32_t value)
{
srs_assert(require(4));
@ -221,6 +287,17 @@ void SrsBuffer::write_4bytes(int32_t value)
*p++ = pp[0];
}
void SrsBuffer::write_le4bytes(int32_t value)
{
srs_assert(require(4));
char* pp = (char*)&value;
*p++ = pp[0];
*p++ = pp[1];
*p++ = pp[2];
*p++ = pp[3];
}
void SrsBuffer::write_3bytes(int32_t value)
{
srs_assert(require(3));
@ -231,6 +308,16 @@ void SrsBuffer::write_3bytes(int32_t value)
*p++ = pp[0];
}
void SrsBuffer::write_le3bytes(int32_t value)
{
srs_assert(require(3));
char* pp = (char*)&value;
*p++ = pp[0];
*p++ = pp[1];
*p++ = pp[2];
}
void SrsBuffer::write_8bytes(int64_t value)
{
srs_assert(require(8));
@ -246,6 +333,21 @@ void SrsBuffer::write_8bytes(int64_t value)
*p++ = pp[0];
}
void SrsBuffer::write_le8bytes(int64_t value)
{
srs_assert(require(8));
char* pp = (char*)&value;
*p++ = pp[0];
*p++ = pp[1];
*p++ = pp[2];
*p++ = pp[3];
*p++ = pp[4];
*p++ = pp[5];
*p++ = pp[6];
*p++ = pp[7];
}
void SrsBuffer::write_string(string value)
{
srs_assert(require((int)value.length()));