Initial community commit

Src/Plugins/Input/in_flac/StreamFileWin32.cpp

@@ -0,0 +1,129 @@
+/*
+** Copyright (C) 2007-2012 Nullsoft, Inc.
+**
+** This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held 
+** liable for any damages arising from the use of this software. 
+**
+** Permission is granted to anyone to use this software for any purpose, including commercial applications, and to 
+** alter it and redistribute it freely, subject to the following restrictions:
+**
+**   1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. 
+**      If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+**
+**   2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+**
+**   3. This notice may not be removed or altered from any source distribution.
+**
+** Author: Ben Allison benski@winamp.com
+** Created: March 1, 2007
+**
+*/
+#include <windows.h>
+#include <FLAC/all.h>
+#include <assert.h>
+#include "StreamFileWin32.h"
+
+FLAC__StreamDecoderReadStatus Win32_Read(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data)
+{
+	assert(*bytes <= 4294967295U);
+
+	HANDLE file = ((Win32_State *)client_data)->handle;
+	if(*bytes > 0) 
+	{
+		assert(sizeof(FLAC__byte) == 1);
+		DWORD bytesRead=0, bytesToRead=*bytes;
+		BOOL result = ReadFile(file, buffer, bytesToRead, &bytesRead, NULL);
+		*bytes = bytesRead;
+
+		if (!result)
+			return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
+		else if(bytesRead == 0)
+		{
+			((Win32_State *)client_data)->endOfFile = true;
+			return FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM;
+		}
+		else
+			return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
+	}
+	else
+		return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
+}
+
+__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__StreamDecoderSeekStatus Win32_Seek(const FLAC__StreamDecoder *decoder, 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_DECODER_SEEK_STATUS_ERROR;
+	else
+	{
+		((Win32_State *)client_data)->endOfFile = false;
+		return FLAC__STREAM_DECODER_SEEK_STATUS_OK;
+	}
+}
+
+FLAC__StreamDecoderTellStatus Win32_Tell(const FLAC__StreamDecoder *decoder, 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_DECODER_TELL_STATUS_ERROR;
+	else
+	{
+		*absolute_byte_offset=position;
+		return FLAC__STREAM_DECODER_TELL_STATUS_OK;
+	}
+}
+__int64 FileSize64(HANDLE file)
+{
+	LARGE_INTEGER position;
+	position.QuadPart=0;
+	position.LowPart = GetFileSize(file, (LPDWORD)&position.HighPart); 	
+	
+	if (position.LowPart == INVALID_FILE_SIZE && GetLastError() != NO_ERROR)
+		return INVALID_FILE_SIZE;
+	else
+		return position.QuadPart;
+}
+
+FLAC__StreamDecoderLengthStatus Win32_Length(const FLAC__StreamDecoder *decoder, FLAC__uint64 *stream_length, void *client_data)
+{
+	HANDLE file = ((Win32_State *)client_data)->handle;
+
+	LARGE_INTEGER position;
+	position.QuadPart=0;
+	position.LowPart = GetFileSize(file, (LPDWORD)&position.HighPart); 	
+	
+	if (position.LowPart == INVALID_FILE_SIZE && GetLastError() != NO_ERROR)
+		return FLAC__STREAM_DECODER_LENGTH_STATUS_ERROR;
+	else
+	{
+		*stream_length = position.QuadPart;
+		return FLAC__STREAM_DECODER_LENGTH_STATUS_OK;
+	}
+}
+
+FLAC__bool Win32_EOF(const FLAC__StreamDecoder *decoder, void *client_data)
+{
+	return  ((Win32_State *)client_data)->endOfFile;
+}