mirror of
https://github.com/mofeng-git/One-KVM.git
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272 lines
8.0 KiB
C++
272 lines
8.0 KiB
C++
//
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// Notice Regarding Standards. AMD does not provide a license or sublicense to
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// any Intellectual Property Rights relating to any standards, including but not
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// limited to any audio and/or video codec technologies such as MPEG-2, MPEG-4;
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// AVC/H.264; HEVC/H.265; AAC decode/FFMPEG; AAC encode/FFMPEG; VC-1; and MP3
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// (collectively, the "Media Technologies"). For clarity, you will pay any
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// royalties due for such third party technologies, which may include the Media
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// Technologies that are owed as a result of AMD providing the Software to you.
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//
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// MIT license
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//
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// Copyright (c) 2018 Advanced Micro Devices, Inc. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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//
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#include "TraceAdapter.h"
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#include "DataStreamFile.h"
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#pragma warning(disable: 4996)
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#if defined(_WIN32)
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#include <io.h>
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#endif
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#if defined(_WIN32)
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#define amf_close _close
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#define amf_read _read
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#define amf_write _write
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#define amf_seek64 _lseeki64
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#elif defined(__linux)// Linux
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#include <unistd.h>
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#define amf_close close
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#define amf_read read
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#define amf_write write
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#define amf_seek64 lseek64
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#elif defined(__APPLE__)
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#include <unistd.h>
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#define amf_close close
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#define amf_read read
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#define amf_write write
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#define amf_seek64 lseek
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#endif
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using namespace amf;
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#define AMF_FACILITY L"AMFDataStreamFileImpl"
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#define AMF_FILE_PROTOCOL L"file"
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//-------------------------------------------------------------------------------------------------
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AMFDataStreamFileImpl::AMFDataStreamFileImpl()
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: m_iFileDescriptor(-1), m_Path()
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{}
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//-------------------------------------------------------------------------------------------------
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AMFDataStreamFileImpl::~AMFDataStreamFileImpl()
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{
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Close();
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}
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//-------------------------------------------------------------------------------------------------
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AMF_RESULT AMF_STD_CALL AMFDataStreamFileImpl::Close()
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{
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AMF_RESULT err = AMF_OK;
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if(m_iFileDescriptor != -1)
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{
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const int status = amf_close(m_iFileDescriptor);
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if(status != 0)
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{
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err = AMF_FAIL;
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}
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m_iFileDescriptor = -1;
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}
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return err;
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}
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//-------------------------------------------------------------------------------------------------
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AMF_RESULT AMF_STD_CALL AMFDataStreamFileImpl::Read(void* pData, amf_size iSize, amf_size* pRead)
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{
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AMF_RETURN_IF_FALSE(m_iFileDescriptor != -1, AMF_FILE_NOT_OPEN, L"Read() - File not open");
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AMF_RESULT err = AMF_OK;
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int ready = amf_read(m_iFileDescriptor, pData, (amf_uint)iSize);
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if(pRead != NULL)
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{
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*pRead = ready;
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}
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if(ready == 0) // eof
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{
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err = AMF_EOF;
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}
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else if(ready == -1)
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{
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err = AMF_FAIL;
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}
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return err;
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}
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//-------------------------------------------------------------------------------------------------
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AMF_RESULT AMF_STD_CALL AMFDataStreamFileImpl::Write(const void* pData, amf_size iSize, amf_size* pWritten)
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{
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AMF_RETURN_IF_FALSE(m_iFileDescriptor != -1, AMF_FILE_NOT_OPEN, L"Write() - File not Open");
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AMF_RESULT err = AMF_OK;
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amf_uint32 written = amf_write(m_iFileDescriptor, pData, (amf_uint)iSize);
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if(pWritten != NULL)
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{
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*pWritten = written;
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}
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if(written != iSize) // check errors
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{
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err = AMF_FAIL;
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}
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return err;
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}
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//-------------------------------------------------------------------------------------------------
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AMF_RESULT AMF_STD_CALL AMFDataStreamFileImpl::Seek(AMF_SEEK_ORIGIN eOrigin, amf_int64 iPosition, amf_int64* pNewPosition)
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{
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AMF_RETURN_IF_FALSE(m_iFileDescriptor != -1, AMF_FILE_NOT_OPEN, L"Seek() - File not Open");
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int org = 0;
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switch(eOrigin)
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{
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case AMF_SEEK_BEGIN:
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org = SEEK_SET;
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break;
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case AMF_SEEK_CURRENT:
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org = SEEK_CUR;
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break;
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case AMF_SEEK_END:
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org = SEEK_END;
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break;
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}
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amf_int64 new_pos = 0;
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new_pos = amf_seek64(m_iFileDescriptor, iPosition, org);
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if(new_pos == -1L) // check errors
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{
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return AMF_FAIL;
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}
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if(pNewPosition != NULL)
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{
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*pNewPosition = new_pos;
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}
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return AMF_OK;
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}
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//-------------------------------------------------------------------------------------------------
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AMF_RESULT AMF_STD_CALL AMFDataStreamFileImpl::GetPosition(amf_int64* pPosition)
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{
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AMF_RETURN_IF_FALSE(pPosition != NULL, AMF_INVALID_POINTER);
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AMF_RETURN_IF_FALSE(m_iFileDescriptor != -1, AMF_FILE_NOT_OPEN, L"GetPosition() - File not Open");
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*pPosition = amf_seek64(m_iFileDescriptor, 0, SEEK_CUR);
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if(*pPosition == -1L)
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{
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return AMF_FAIL;
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}
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return AMF_OK;
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}
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//-------------------------------------------------------------------------------------------------
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AMF_RESULT AMF_STD_CALL AMFDataStreamFileImpl::GetSize(amf_int64* pSize)
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{
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AMF_RETURN_IF_FALSE(pSize != NULL, AMF_INVALID_POINTER);
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AMF_RETURN_IF_FALSE(m_iFileDescriptor != -1, AMF_FILE_NOT_OPEN, L"GetSize() - File not open");
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amf_int64 cur_pos = amf_seek64(m_iFileDescriptor, 0, SEEK_CUR);
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*pSize = amf_seek64(m_iFileDescriptor, 0, SEEK_END);
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amf_seek64(m_iFileDescriptor, cur_pos, SEEK_SET);
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return AMF_OK;
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}
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//-------------------------------------------------------------------------------------------------
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bool AMF_STD_CALL AMFDataStreamFileImpl::IsSeekable()
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{
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return true;
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}
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//-------------------------------------------------------------------------------------------------
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AMF_RESULT AMF_STD_CALL AMFDataStreamFileImpl::Open(const wchar_t* pFilePath, AMF_STREAM_OPEN eOpenType, AMF_FILE_SHARE eShareType)
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{
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if(m_iFileDescriptor != -1)
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{
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Close();
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}
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AMF_RETURN_IF_FALSE(pFilePath != NULL, AMF_INVALID_ARG);
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m_Path = pFilePath;
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#if defined(_WIN32)
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int access = _O_BINARY;
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#else
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int access = 0;
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#endif
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switch(eOpenType)
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{
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case AMFSO_READ:
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access |= O_RDONLY;
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break;
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case AMFSO_WRITE:
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access |= O_CREAT | O_TRUNC | O_WRONLY;
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break;
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case AMFSO_READ_WRITE:
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access |= O_CREAT | O_TRUNC | O_RDWR;
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break;
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case AMFSO_APPEND:
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access |= O_CREAT | O_APPEND | O_RDWR;
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break;
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}
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#ifdef _WIN32
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int shflag = 0;
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switch(eShareType)
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{
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case AMFFS_EXCLUSIVE:
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shflag = _SH_DENYRW;
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break;
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case AMFFS_SHARE_READ:
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shflag = _SH_DENYWR;
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break;
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case AMFFS_SHARE_WRITE:
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shflag = _SH_DENYRD;
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break;
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case AMFFS_SHARE_READ_WRITE:
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shflag = _SH_DENYNO;
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break;
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}
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#endif
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#ifdef O_BINARY
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access |= O_BINARY;
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#endif
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#ifdef _WIN32
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m_iFileDescriptor = _wsopen(m_Path.c_str(), access, shflag, 0666);
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#else
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amf_string str = amf_from_unicode_to_utf8(m_Path);
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m_iFileDescriptor = open(str.c_str(), access, 0666);
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#endif
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if(m_iFileDescriptor == -1)
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{
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return AMF_FAIL;
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}
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return AMF_OK;
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}
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//-------------------------------------------------------------------------------------------------
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