diff options
Diffstat (limited to 'Src/Plugins/Input/in_flac/StreamFileWin32.cpp')
| -rw-r--r-- | Src/Plugins/Input/in_flac/StreamFileWin32.cpp | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/Src/Plugins/Input/in_flac/StreamFileWin32.cpp b/Src/Plugins/Input/in_flac/StreamFileWin32.cpp new file mode 100644 index 00000000..f34b0863 --- /dev/null +++ b/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; +}
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