linux_fb_surf.cpp
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上传日期:2007-06-06
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文件大小:10k
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2003 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #include "minisite.h"
- #include "hxvsurf.h"
- #include "coloracc.h"
- #include "minisurf.h"
- #include "platform/unix/linux_fb_surf.h"
- #include "minifmt.h"
- //#include <unistd.h>
- #include <fcntl.h>
- #include <linux/fb.h>
- //#include <linux/kd.h>
- #include <sys/ioctl.h>
- #include <sys/mman.h>
- //#include <sys/time.h>
- //#include <sys/types.h>
- //#include <sys/select.h>
- static CFmtObj ImageHelper;
- CLinuxFrameBufferSurface::CLinuxFrameBufferSurface(IUnknown* pContext,
- CMiniBaseSite* pSite)
- : CMiniBaseSurface(pContext, pSite)
- , m_nScreenNumber(0)
- , m_unDepth(0)
- , m_nBitsPerPixel(0)
- , m_nCompositionSize(0)
- , m_pCompositionSurface(NULL)
- , m_frameBufferFD(-1)
- , m_pFrameBuffer(0)
- {}
- CLinuxFrameBufferSurface::~CLinuxFrameBufferSurface()
- {
- if (m_frameBufferFD != -1)
- {
- m_pFrameBuffer = 0;
- close(m_frameBufferFD);
- m_frameBufferFD = -1;
-
- }
- HX_FREE(m_pCompositionSurface);
- m_nCompositionSize = 0;
- m_nCompositionPitch = 0;
- memset(&m_surfaceSize, 0, sizeof( m_surfaceSize ) );
- }
- HX_RESULT CLinuxFrameBufferSurface::_CreateDestBuffer(int cidIn,
- int nWidth,
- int nHeight,
- int& nCount)
- {
- HX_RESULT res = HXR_OK;
- HX_ASSERT( m_pSite );
- //HX_ASSERT( m_unDepth );
- //For now, we just support 1 format
- HX_ASSERT( cidIn == CID_I420 );
-
- //Get the size of this site.
- m_pSite->GetSize(m_surfaceSize);
- //Malloc the room to hold the actual bits.
- HXBitmapInfo bmiTemp;
- ImageHelper.MakeBitmap( &bmiTemp,
- sizeof(bmiTemp),
- GetDstCID(),
- m_surfaceSize.cx,
- m_surfaceSize.cy,
- NULL,
- 0);
-
- m_nCompositionPitch = ImageHelper.GetBitmapPitch(&bmiTemp);
- int imageSize = bmiTemp.bmiHeader.biSizeImage;
- res = _ResizeVideoBuffer(imageSize);
- HX_ASSERT( ImageHelper.GetBitmapColor(&bmiTemp) == GetDstCID() );
- if (!m_pFrameBuffer)
- {
- res = _OpenFrameBuffer();
- }
-
- return res;
- }
-
- HX_RESULT CLinuxFrameBufferSurface::_LockDestBuffer(UCHAR** ppDestPtr,
- LONG32* pnDestPitch,
- int& cid,
- REF(HXxSize) srcSize,
- int nIndex)
- {
- *ppDestPtr = m_pCompositionSurface;
- *pnDestPitch = m_nCompositionPitch;
- cid = GetDstCID();
-
- return HXR_OK;
- }
-
- HX_RESULT CLinuxFrameBufferSurface::_TransferToDestBuffer(UCHAR* pSrcBuffer,
- HXBitmapInfoHeader* pBitmapInfo,
- HXxRect* prSrcRect,
- HXxRect* prDstRect,
- UCHAR* pDstBuffer,
- LONG32 nDstPitch)
- {
- HX_RESULT res = HXR_OK;
- int nCidIn = ImageHelper.GetBitmapColor( (HXBitmapInfo*)pBitmapInfo );
- //This minisite, as written, is just doing a blind I420->RGB32
- //color convert. Feel free to add whatever you want...
- HX_ASSERT( nCidIn == CID_I420 );
- if( nCidIn == CID_I420 )
- {
- //This calls the m_fpColorConverter init'ed in the base class.
- res = CMiniBaseSurface::_TransferToDestBuffer(pSrcBuffer,
- pBitmapInfo,
- prSrcRect,
- prDstRect,
- pDstBuffer,
- nDstPitch);
- }
- return res;
- }
-
- HX_RESULT CLinuxFrameBufferSurface::_UnlockDestBuffer(UCHAR* pSurfPtr, int nIndex=0)
- {
- return HXR_OK;
- }
-
- HX_RESULT CLinuxFrameBufferSurface::_RenderDestBuffer(HXxRect* prSrcRect,
- HXxRect* prDestRect,
- int nIndex)
- {
- HX_RESULT res = HXR_FAILED;
- int imgWidth = prDestRect->right - prDestRect->left;
- int imgHeight = prDestRect->bottom - prDestRect->top;
-
- if (m_pFrameBuffer)
- {
- #ifdef HELIX_FEATURE_CC_RGB32out
- UINT32* pSrc = (UINT32*)m_pCompositionSurface;
- #elif defined(HELIX_FEATURE_CC_RGB565out)
- UINT16* pSrc = (UINT16*)m_pCompositionSurface;
- #endif
- UINT16* pDest = m_pFrameBuffer;
- int srcDelta = 0;
- int dstDelta = 0;
- // Compute how much of the image we want to copy
- int lines = (imgHeight < m_fbHeight) ? imgHeight : m_fbHeight;
- int copyWidth = imgWidth;
- if (imgWidth < m_fbWidth)
- {
- dstDelta = m_fbWidth - imgWidth;
- }
- else if (imgWidth > m_fbWidth)
- {
- srcDelta = imgWidth - m_fbWidth;
- copyWidth = m_fbWidth;
- }
-
- // Center image
- int left = (m_fbWidth / 2) - (copyWidth / 2);
- int top = (m_fbHeight / 2) - (lines / 2);
- pDest += top * m_fbWidth + left;
-
- int i = 0;
- for (int y = 0; y < lines; y++)
- {
- for (int x = 0; x < copyWidth; x++)
- {
- #ifdef HELIX_FEATURE_CC_RGB32out
- // We need to convert RGB32 -> RGB565
- UINT32 src = *pSrc++;
- UINT32 dst = (((src & 0x00f80000) >> 8) |
- ((src & 0x0000fc00) >> 5) |
- ((src & 0x000000f8) >> 3));
- *pDest++ = (UINT16)dst;
- #elif defined(HELIX_FEATURE_CC_RGB565out)
- *pDest++ = *pSrc++;
- #endif
- }
- pSrc += srcDelta;
- pDest += dstDelta;
- }
- res = HXR_OK;
- }
-
- return res;
- }
-
- HX_RESULT CLinuxFrameBufferSurface::_DestroyDestBuffer(int cid, int nCount)
- {
- HX_FREE(m_pCompositionSurface);
- m_nCompositionSize = 0;
- m_nCompositionPitch = 0;
- memset(&m_surfaceSize, 0, sizeof( m_surfaceSize ) );
-
- return HXR_OK;
- }
- int CLinuxFrameBufferSurface::GetDstCID(int nIndex)
- {
- //Right now the mini site just always outputs in RGB32.
- #ifdef HELIX_FEATURE_CC_RGB32out
- return CID_RGB32;
- #elif defined(HELIX_FEATURE_CC_RGB565out)
- return CID_RGB565;
- #endif
- }
- HX_RESULT CLinuxFrameBufferSurface::_ResizeVideoBuffer( INT32 nSize)
- {
- HX_RESULT retVal=HXR_OK;
- //XXXgfw. Trade off here. We can use lots of mem if we just return and
- //the user has scaled the image up very much and then goes back down.
- //If we don't just return we can do tons and tons of mallocs. Maybe we
- //should add a timed callback to reclaim some of this mem after a few
- //seconds.
- if(nSize <= m_nCompositionSize)
- return retVal;
- if(m_pCompositionSurface == NULL)
- {
- m_pCompositionSurface = (UCHAR*) malloc(nSize);
- }
- else
- {
- m_pCompositionSurface = (UCHAR*) realloc(m_pCompositionSurface, nSize);
- }
- if( m_pCompositionSurface )
- {
- m_nCompositionSize = nSize;
- }
- else
- {
- HX_ASSERT("We can't alloc the composition surface." == NULL );
- m_nCompositionSize = 0;
- }
- return retVal;
- }
- HX_RESULT CLinuxFrameBufferSurface::_OpenFrameBuffer()
- {
- HX_RESULT res = HXR_FAILED;
- struct fb_var_screeninfo vinfo;
- struct fb_fix_screeninfo finfo;
- char *fbp = 0;
- int x = 0, y = 0;
- long int location = 0;
- /* Open the file for reading and writing */
- m_frameBufferFD = open("/dev/fb0", O_RDWR);
- if (m_frameBufferFD == -1)
- {
- printf("Error: cannot open framebuffer device.n");
- }
- else if (ioctl(m_frameBufferFD, FBIOGET_FSCREENINFO, &finfo))
- {
- printf("Error reading fixed information.n");
- }
- else if (ioctl(m_frameBufferFD, FBIOGET_VSCREENINFO, &vinfo))
- {
- printf("Error reading variable information.n");
- }
- else
- {
- printf("xres:%i , yres:%i , BBP:%in ",
- vinfo.xres, vinfo.yres, vinfo.bits_per_pixel);
- m_fbWidth = vinfo.xres;
- m_fbHeight = vinfo.yres;
- int screen_size = vinfo.xres * vinfo.yres * vinfo.bits_per_pixel / 8;
-
-
- /* Map the device to memory */
- m_pFrameBuffer = (UINT16*)mmap(0, screen_size,
- PROT_READ | PROT_WRITE, MAP_SHARED,
- m_frameBufferFD, 0);
- if ((int)m_pFrameBuffer == -1)
- {
- printf("Error: failed to map framebuffer device to memory.n");
- }
- else
- {
- res = HXR_OK;
- }
- }
- return res;
- }