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#include "StreamFileWin32.h"
#include <assert.h>
static __int64 Seek64(HANDLE hf, __int64 distance, DWORD MoveMethod)
{
LARGE_INTEGER li;
li.QuadPart = distance;
li.LowPart = SetFilePointer (hf, li.LowPart, &li.HighPart, MoveMethod);
if (li.LowPart == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR)
{
li.QuadPart = -1;
}
return li.QuadPart;
}
FLAC__StreamEncoderWriteStatus Win32_Write(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, unsigned current_frame, void *client_data)
{
assert(bytes <= 4294967295U);
HANDLE file = ((Win32_State *)client_data)->handle;
if(bytes > 0)
{
assert(sizeof(FLAC__byte) == 1);
DWORD bytesWritten = 0, bytesToWrite = (DWORD)bytes;
BOOL result = WriteFile(file, buffer, bytesToWrite, &bytesWritten, NULL);
((Win32_State *)client_data)->bytesWritten += bytesWritten;
if (!result)
return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
}
else
return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
}
FLAC__StreamEncoderSeekStatus Win32_Seek(const FLAC__StreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data)
{
HANDLE file = ((Win32_State *)client_data)->handle;
__int64 result = Seek64(file, absolute_byte_offset, FILE_BEGIN);
if (result == INVALID_SET_FILE_POINTER)
return FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR;
else
{
return FLAC__STREAM_ENCODER_SEEK_STATUS_OK;
}
}
FLAC__StreamEncoderTellStatus Win32_Tell(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_byte_offset, void *client_data)
{
HANDLE file = ((Win32_State *)client_data)->handle;
__int64 position = Seek64(file, 0, FILE_CURRENT);
if (position == INVALID_SET_FILE_POINTER)
return FLAC__STREAM_ENCODER_TELL_STATUS_ERROR;
else
{
*absolute_byte_offset=position;
return FLAC__STREAM_ENCODER_TELL_STATUS_OK;
}
}
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