/****************************************************************************** * recordMyDesktop * ******************************************************************************* * * * Copyright (C) 2006,2007,2008 John Varouhakis * * * * * * This program is free software; you can redistribute it and/or modify * * it under the terms of the GNU General Public License as published by * * the Free Software Foundation; either version 2 of the License, or * * (at your option) any later version. * * * * This program is distributed in the hope that it will be useful, * * but WITHOUT ANY WARRANTY; without even the implied warranty of * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * * GNU General Public License for more details. * * * * You should have received a copy of the GNU General Public License * * along with this program; if not, write to the Free Software * * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * * * * * * * For further information contact me at johnvarouhakis@gmail.com * ******************************************************************************/ #include "recordmydesktop.h" #include "rectinsert.h" #define CLIP_DUMMY_POINTER_AREA(dummy_p_area,brwin,wgeom){\ (wgeom)->x=((((dummy_p_area).x+\ (dummy_p_area).width>=(brwin)->rgeom.x)&&\ ((dummy_p_area).x<=(brwin)->rgeom.x+\ (brwin)->rgeom.width))?\ (((dummy_p_area).x<=(brwin)->rgeom.x)?\ (brwin)->rgeom.x:(dummy_p_area).x):-1);\ (wgeom)->y=((((dummy_p_area).y+\ (dummy_p_area).height>=(brwin)->rgeom.y)&&\ ((dummy_p_area).y<=(brwin)->rgeom.y+\ (brwin)->rgeom.height))?\ (((dummy_p_area).y<=(brwin)->rgeom.y)?\ (brwin)->rgeom.y:(dummy_p_area).y):-1);\ (wgeom)->width=((dummy_p_area).x<=(brwin)->rgeom.x)?\ (dummy_p_area).width-\ ((brwin)->rgeom.x-(dummy_p_area).x):\ ((dummy_p_area).x<=(brwin)->rgeom.x+\ (brwin)->rgeom.width)?\ ((brwin)->rgeom.width-(dummy_p_area).x+\ (brwin)->rgeom.x<(dummy_p_area).width)?\ (brwin)->rgeom.width-(dummy_p_area).x+\ (brwin)->rgeom.x:(dummy_p_area).width:-1;\ (wgeom)->height=((dummy_p_area).y<=(brwin)->rgeom.y)?\ (dummy_p_area).height-\ ((brwin)->rgeom.y-(dummy_p_area).y):\ ((dummy_p_area).y<=(brwin)->rgeom.y+\ (brwin)->rgeom.height)?\ ((brwin)->rgeom.height-(dummy_p_area).y+\ (brwin)->rgeom.y<(dummy_p_area).height)?\ (brwin)->rgeom.height-(dummy_p_area).y+\ (brwin)->rgeom.y:(dummy_p_area).height:-1;\ if((wgeom)->width>(brwin)->rgeom.width)\ (wgeom)->width=(brwin)->rgeom.width;\ if((wgeom)->height>(brwin)->rgeom.height)\ (wgeom)->height=(brwin)->rgeom.height;\ } #define XFIXES_POINTER_TO_YUV(yuv,\ data,\ x_tm,\ y_tm,\ width_tm,\ height_tm,\ x_offset,\ y_offset,\ column_discard_stride){\ int i,k,j=0;\ unsigned char avg0,avg1,avg2,avg3;\ int x_2=x_tm/2,y_2=y_tm/2;\ for(k=y_offset;ky[x_tm+(i-x_offset)+(k+y_tm-y_offset)*yuv->y_width]=\ (yuv->y[x_tm+(i-x_offset)+(k-y_offset+y_tm)*yuv->y_width]*\ (UCHAR_MAX-data[(j*RMD_ULONG_SIZE_T)+__ABYTE])+\ (Yr[data[(j*RMD_ULONG_SIZE_T)+__RBYTE]]+\ Yg[data[(j*RMD_ULONG_SIZE_T)+__GBYTE]] +\ Yb[data[(j*RMD_ULONG_SIZE_T)+__BBYTE]])*\ data[(j*RMD_ULONG_SIZE_T)+__ABYTE])/UCHAR_MAX ;\ if((k%2)&&(i%2)){\ avg3=AVG_4_PIXELS(data,\ (width_tm+column_discard_stride),\ k,i,__ABYTE);\ avg2=AVG_4_PIXELS(data,\ (width_tm+column_discard_stride),\ k,i,__RBYTE);\ avg1=AVG_4_PIXELS(data,\ (width_tm+column_discard_stride),\ k,i,__GBYTE);\ avg0=AVG_4_PIXELS(data,\ (width_tm+column_discard_stride),\ k,i,__BBYTE);\ yuv->u[x_2+(i-x_offset)/2+((k-y_offset)/2+y_2)*\ yuv->uv_width]=\ (yuv->u[x_2+(i-x_offset)/2+((k-y_offset)/2+y_2)*\ yuv->uv_width]*\ (UCHAR_MAX-avg3)+\ (Ur[avg2] + Ug[avg1] +UbVr[avg0])*avg3)/UCHAR_MAX;\ yuv->v[x_2+(i-x_offset)/2+((k-y_offset)/2+y_2)*\ yuv->uv_width]=\ (yuv->v[x_2+(i-x_offset)/2+((k-y_offset)/2+y_2)*\ yuv->uv_width]*\ (UCHAR_MAX-avg3)+\ (UbVr[avg2] + Vg[avg1] +Vb[avg0])*avg3)/UCHAR_MAX;\ }\ }\ }\ } #define MARK_BACK_BUFFER( data,\ x_tm,\ y_tm,\ width_tm,\ height_tm,\ buffer_width,\ __bit_depth__){\ if((__bit_depth__==24)||(__bit_depth__==32)){\ MARK_BACK_BUFFER_C( data,\ x_tm,\ y_tm,\ width_tm,\ height_tm,\ buffer_width,\ 32)\ }\ else{\ MARK_BACK_BUFFER_C( data,\ x_tm,\ y_tm,\ width_tm,\ height_tm,\ buffer_width,\ 16)\ }\ }\ //besides taking the first screenshot, this functions primary purpose is to //initialize the structures and memory. int FirstFrame(ProgData *pdata,XImage **image,XShmSegmentInfo *shminfo, char **pxl_data){ if((pdata->args.noshared)){ *pxl_data=(char *)malloc(pdata->brwin.nbytes); (*image)=XCreateImage(pdata->dpy, pdata->specs.visual, pdata->specs.depth, ZPixmap, 0, *pxl_data, pdata->brwin.rgeom.width, pdata->brwin.rgeom.height, 8, 0); XInitImage((*image)); GetZPixmap(pdata->dpy,pdata->specs.root, (*image)->data, pdata->brwin.rgeom.x, pdata->brwin.rgeom.y, pdata->brwin.rgeom.width, pdata->brwin.rgeom.height); } else{ (*image)=XShmCreateImage(pdata->dpy, pdata->specs.visual, pdata->specs.depth, ZPixmap, *pxl_data, shminfo, pdata->brwin.rgeom.width, pdata->brwin.rgeom.height); (*shminfo).shmid=shmget(IPC_PRIVATE, (*image)->bytes_per_line* (*image)->height, IPC_CREAT|0777); if((*shminfo).shmid==-1){ fprintf(stderr,"Failed to obtain Shared Memory segment!\n"); return 12; } (*shminfo).shmaddr=(*image)->data=shmat((*shminfo).shmid, NULL,0); (*shminfo).readOnly = False; if(!XShmAttach(pdata->dpy,shminfo)){ fprintf(stderr,"Failed to attach shared memory to proccess.\n"); return 12; } XShmGetImage(pdata->dpy, pdata->specs.root, (*image), pdata->brwin.rgeom.x, pdata->brwin.rgeom.y, AllPlanes); } UPDATE_YUV_BUFFER((&pdata->enc_data->yuv), ((unsigned char*)((*image))->data),NULL, (pdata->enc_data->x_offset),(pdata->enc_data->y_offset), (pdata->brwin.rgeom.width),(pdata->brwin.rgeom.height), (pdata->args.no_quick_subsample), pdata->specs.depth); return 0; } //make a deep copy void BRWinCpy(BRWindow *target,BRWindow *source){ target->geom.x=source->geom.x; target->geom.y=source->geom.y; target->geom.width=source->geom.width; target->geom.height=source->geom.height; target->rgeom.x=source->rgeom.x; target->rgeom.y=source->rgeom.y; target->rgeom.width=source->rgeom.width; target->rgeom.height=source->rgeom.height; target->nbytes=source->nbytes; target->windowid=source->windowid; } //recenters the capture area to the mouse //without exiting the display bounding box void MoveCaptureArea( BRWindow *brwin, int cursor_x, int cursor_y, int width, int height){ int t_x=0,t_y=0; t_x=cursor_x-brwin->rgeom.width/2; t_x=(t_x>>1)<<1; brwin->rgeom.x=(t_x<0)?0:((t_x+brwin->rgeom.width>width)? width-brwin->rgeom.width:t_x); t_y=cursor_y-brwin->rgeom.height/2; t_y=(t_y>>1)<<1; brwin->rgeom.y=(t_y<0)?0:((t_y+brwin->rgeom.height>height)? height-brwin->rgeom.height:t_y); } /** * Extract cache blocks from damage list * * \param root Root entry of the list with damaged areas * * \param x_offset left x of the recording area * * \param x_offset upper y of the recording area * * \param blocknum_x Width of image in blocks * * \param blocknum_y Height of image in blocks */ void BlocksFromList (RectArea **root, unsigned int x_offset, unsigned int y_offset, unsigned int blocknum_x, unsigned int blocknum_y) { RectArea *temp; unsigned int i, j, blockno, row_start, row_end, column_start, column_end; temp = *root; for (i = 0; i < blocknum_x * blocknum_y; i++) { yblocks[i] = ublocks[i] = vblocks[i] = 0; } while (temp != NULL) { column_start = (temp->geom.x - x_offset) / Y_UNIT_WIDTH; column_end = (temp->geom.x + (temp->geom.width - 1) - x_offset) / Y_UNIT_WIDTH; row_start = (temp->geom.y - y_offset) / Y_UNIT_WIDTH; row_end = (temp->geom.y + (temp->geom.height - 1) - y_offset) / Y_UNIT_WIDTH; for (i = row_start; i < row_end + 1; i++) { for (j = column_start; j < column_end + 1; j++) { blockno = i * blocknum_x + j; yblocks[blockno] = 1; ublocks[blockno] = 1; vblocks[blockno] = 1; } } temp = temp->next; } } void *GetFrame(ProgData *pdata){ int i=0, blocknum_x=pdata->enc_data->yuv.y_width/Y_UNIT_WIDTH, blocknum_y=pdata->enc_data->yuv.y_height/Y_UNIT_WIDTH; unsigned int msk_ret; WGeometry mouse_pos_abs,mouse_pos_rel,mouse_pos_temp; BRWindow temp_brwin; Window root_ret, child_ret; //Frame XFixesCursorImage *xcim=NULL; XImage *image=NULL,*image_back=NULL; //the image that holds //the current full screenshot XShmSegmentInfo shminfo,shminfo_back;//info structure for the image above. int init_img1=0,init_img2=0, img_sel,d_buff; char *pxl_data=NULL,*pxl_data_back=NULL; img_sel=d_buff=pdata->args.full_shots; if((init_img1=FirstFrame(pdata,&image,&shminfo,&pxl_data)!=0)){ if(pdata->args.encOnTheFly){ if(remove(pdata->args.filename)){ perror("Error while removing file:\n"); } else{ fprintf(stderr,"SIGABRT received,file %s removed\n", pdata->args.filename); } } else{ PurgeCache(pdata->cache_data,!pdata->args.nosound); } exit(init_img1); } if(d_buff){ if((init_img2=FirstFrame(pdata,&image_back,&shminfo_back, &pxl_data_back)!=0)){ if(pdata->args.encOnTheFly){ if(remove(pdata->args.filename)){ perror("Error while removing file:\n"); } else{ fprintf(stderr,"SIGABRT received,file %s removed\n", pdata->args.filename); } } else{ PurgeCache(pdata->cache_data,!pdata->args.nosound); } exit(init_img2); } } if(!pdata->args.noframe){ pdata->shaped_w=rmdFrameInit(pdata->dpy, pdata->specs.screen, pdata->specs.root, pdata->brwin.rgeom.x, pdata->brwin.rgeom.y, pdata->brwin.rgeom.width, pdata->brwin.rgeom.height); XSelectInput(pdata->dpy,pdata->shaped_w,ExposureMask); } mouse_pos_abs.x=mouse_pos_temp.x=0; mouse_pos_abs.y=mouse_pos_temp.y=0; mouse_pos_abs.width=mouse_pos_temp.width=pdata->dummy_p_size; mouse_pos_abs.height=mouse_pos_temp.height=pdata->dummy_p_size; //This is the the place where we call XSelectInput //and arrange so that we listen for damage on all //windows InitEventsPolling(pdata); while(pdata->running){ //if we are left behind we must not wait. //also before actually pausing we must make sure the streams //are synced. sound stops so this should only happen quickly. if(pdata->avd>0 || pdata->args.nosound){ pthread_mutex_lock(&time_mutex); pthread_cond_wait(&pdata->time_cond,&time_mutex); pthread_mutex_unlock(&time_mutex); if(Paused){ //this is necessary since event loop processes //the shortcuts which will unpause the program EventLoop(pdata); continue; } } //read all events and construct list with damage //events (if not full_shots) EventLoop(pdata); //switch back and front buffers (full_shots only) if(d_buff) img_sel=(img_sel)?0:1; capture_busy=1; BRWinCpy(&temp_brwin,&pdata->brwin); if(pdata->args.xfixes_cursor || pdata->args.have_dummy_cursor|| pdata->args.follow_mouse){ //pointer sequence //update previous_position //(if full_shots is enabled the new cursor is //entered on the list for update. //When taking full shots we keep it for further //bellow, to mark the area as dirty when dbuffering. CLIP_DUMMY_POINTER_AREA(mouse_pos_abs,&temp_brwin, &mouse_pos_temp); if(!pdata->args.full_shots){ if((mouse_pos_temp.x>=0)&& (mouse_pos_temp.y>=0)&& (mouse_pos_temp.width>0)&& (mouse_pos_temp.height>0)) RectInsert(&pdata->rect_root,&mouse_pos_temp); } //find new one if(pdata->args.xfixes_cursor){ xcim=XFixesGetCursorImage(pdata->dpy); mouse_pos_abs.x=xcim->x-xcim->xhot; mouse_pos_abs.y=xcim->y-xcim->yhot; mouse_pos_abs.width=xcim->width; mouse_pos_abs.height=xcim->height; } else{ XQueryPointer(pdata->dpy, pdata->specs.root, &root_ret,&child_ret, &mouse_pos_abs.x,&mouse_pos_abs.y, &mouse_pos_rel.x,&mouse_pos_rel.y,&msk_ret); } } if(pdata->args.follow_mouse){ MoveCaptureArea(&pdata->brwin, mouse_pos_abs.x+ ((pdata->args.xfixes_cursor)?xcim->xhot:0), mouse_pos_abs.y+ ((pdata->args.xfixes_cursor)?xcim->yhot:0), pdata->specs.width, pdata->specs.height); if(!pdata->args.noframe){ rmdMoveFrame(pdata->dpy, pdata->shaped_w, temp_brwin.rgeom.x, temp_brwin.rgeom.y); } } if(!pdata->args.full_shots){ pthread_mutex_lock(&pdata->yuv_mutex); UpdateImage(pdata->dpy, &pdata->enc_data->yuv, &pdata->specs, &pdata->rect_root, &temp_brwin, pdata->enc_data, image->data, pdata->args.noshared, &shminfo, pdata->shm_opcode, pdata->args.no_quick_subsample); BlocksFromList(&pdata->rect_root, temp_brwin.rgeom.x, temp_brwin.rgeom.y, pdata->enc_data->yuv.y_width/Y_UNIT_WIDTH, pdata->enc_data->yuv.y_height/Y_UNIT_WIDTH); pthread_mutex_unlock(&pdata->yuv_mutex); } else{ unsigned char *front_buff=(!img_sel)?((unsigned char*)image->data): ((unsigned char*)image_back->data); unsigned char *back_buff=(!d_buff)?NULL:((img_sel)? ((unsigned char*)image->data): ((unsigned char*)image_back->data)); if(!pdata->args.noshared){ XShmGetImage(pdata->dpy,pdata->specs.root, ((!img_sel)?image:image_back), (temp_brwin.rgeom.x), (temp_brwin.rgeom.y),AllPlanes); } if(pdata->args.noshared){ GetZPixmap( pdata->dpy, pdata->specs.root, image->data, temp_brwin.rgeom.x, temp_brwin.rgeom.y, temp_brwin.rgeom.width, temp_brwin.rgeom.height); } pthread_mutex_lock(&pdata->yuv_mutex); for(i=0;ienc_data->yuv), front_buff,back_buff, (pdata->enc_data->x_offset), (pdata->enc_data->y_offset), (temp_brwin.rgeom.width), (temp_brwin.rgeom.height), pdata->args.no_quick_subsample, pdata->specs.depth); pthread_mutex_unlock(&pdata->yuv_mutex); } if(pdata->args.xfixes_cursor || pdata->args.have_dummy_cursor){ int mouse_xoffset, mouse_yoffset; //avoid segfaults CLIP_DUMMY_POINTER_AREA(mouse_pos_abs,&temp_brwin, &mouse_pos_temp); mouse_xoffset=mouse_pos_temp.x-mouse_pos_abs.x; mouse_yoffset=mouse_pos_temp.y-mouse_pos_abs.y; if((mouse_xoffset<0) || (mouse_xoffset>mouse_pos_abs.width)) mouse_xoffset=0; if((mouse_yoffset<0) || (mouse_yoffset>mouse_pos_abs.height)) mouse_yoffset=0; //draw the cursor if((mouse_pos_temp.x>=0)&& (mouse_pos_temp.y>=0)&& (mouse_pos_temp.width>0)&& (mouse_pos_temp.height>0)){ if(pdata->args.xfixes_cursor){ XFIXES_POINTER_TO_YUV((&pdata->enc_data->yuv), ((unsigned char*)xcim->pixels), (mouse_pos_temp.x- temp_brwin.rgeom.x+ pdata->enc_data->x_offset), (mouse_pos_temp.y- temp_brwin.rgeom.y+ pdata->enc_data->y_offset), mouse_pos_temp.width, mouse_pos_temp.height, mouse_xoffset, mouse_yoffset, (xcim->width-mouse_pos_temp.width)); } else{ DUMMY_POINTER_TO_YUV((&pdata->enc_data->yuv), pdata->dummy_pointer, (mouse_pos_temp.x- temp_brwin.rgeom.x+ pdata->enc_data->x_offset), (mouse_pos_temp.y- temp_brwin.rgeom.y+ pdata->enc_data->y_offset), mouse_pos_temp.width, mouse_pos_temp.height, mouse_xoffset, mouse_yoffset, pdata->npxl); } if(d_buff){ //make previous cursor position dirty unsigned char *front_buff= (!img_sel)?((unsigned char*)image->data): ((unsigned char*)image_back->data); MARK_BACK_BUFFER( front_buff, (mouse_pos_temp.x- temp_brwin.rgeom.x+ pdata->enc_data->x_offset), (mouse_pos_temp.y- temp_brwin.rgeom.y+ pdata->enc_data->y_offset), mouse_pos_temp.width, mouse_pos_temp.height, (temp_brwin.rgeom.width), pdata->specs.depth) } } if(pdata->args.xfixes_cursor){ XFree(xcim); xcim=NULL; } } if(!pdata->args.full_shots){ ClearList(&pdata->rect_root); } if(encoder_busy){ frames_lost++; } pthread_mutex_lock(&pdata->img_buff_ready_mutex); pthread_cond_broadcast(&pdata->image_buffer_ready); pthread_mutex_unlock(&pdata->img_buff_ready_mutex); capture_busy=0; } if(!pdata->args.noframe){ XDestroyWindow(pdata->dpy,pdata->shaped_w); } pthread_mutex_lock(&pdata->img_buff_ready_mutex); pthread_cond_broadcast(&pdata->image_buffer_ready); pthread_mutex_unlock(&pdata->img_buff_ready_mutex); if(!pdata->args.noshared){ XShmDetach (pdata->dpy, &shminfo); shmdt (shminfo.shmaddr); shmctl (shminfo.shmid, IPC_RMID, 0); if(d_buff){ XShmDetach (pdata->dpy, &shminfo_back); shmdt (shminfo_back.shmaddr); shmctl (shminfo_back.shmid, IPC_RMID, 0); } } pthread_exit(&errno); }