mirror of
https://github.com/WinampDesktop/winamp.git
synced 2024-12-29 15:26:07 +00:00
49 lines
1.7 KiB
C
49 lines
1.7 KiB
C
#pragma once
|
|
#include "foundation/types.h"
|
|
/* A simple byte-oriented writer.
|
|
use this instead of manually writing data as this deals with memory alignment issues
|
|
for you.
|
|
memory alignment can be critical and annoying on some architectures (e.g. PowerPC)
|
|
it also handles little-endian/big-endian issues
|
|
|
|
Usually you just make one of these things on the stack, passing in your buffer and length
|
|
*/
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
typedef struct bytewriter_struct_t
|
|
{
|
|
size_t byte_length;
|
|
uint8_t *data_ptr;
|
|
void *data;
|
|
} bytewriter_s, *bytewriter_t;
|
|
|
|
void bytewriter_init(bytewriter_t byte_writer, void *data, size_t byte_length);
|
|
static size_t bytewriter_size(bytewriter_t byte_writer) /* returns remaining bytes in stream */
|
|
{
|
|
return byte_writer->byte_length;
|
|
}
|
|
static void *bytewriter_pointer(bytewriter_t byte_writer) /* returns a pointer to the current bitstream position */
|
|
{
|
|
return byte_writer->data_ptr;
|
|
}
|
|
static void bytewriter_advance(bytewriter_t byte_writer, size_t bytes) /* advances the byte stream */
|
|
{
|
|
byte_writer->byte_length-=bytes;
|
|
byte_writer->data_ptr+=bytes;
|
|
}
|
|
|
|
void bytewriter_write_n(bytewriter_t byte_writer, const void *source, size_t bytes);
|
|
void bytewriter_write_zero_n(bytewriter_t byte_writer, size_t bytes);
|
|
void bytewriter_write_u8(bytewriter_t byte_writer, uint8_t value);
|
|
void bytewriter_write_u16_le(bytewriter_t byte_writer, uint16_t value);
|
|
void bytewriter_write_u16_be(bytewriter_t byte_writer, uint16_t value);
|
|
void bytewriter_write_u32_le(bytewriter_t byte_writer, uint32_t value);
|
|
void bytewriter_write_u32_be(bytewriter_t byte_writer, uint32_t value);
|
|
void bytewriter_write_uuid_be(bytewriter_t byte_writer, GUID guid_value);
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|