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