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/*********************************************************************************
* recordMyDesktop *
**********************************************************************************
* *
* Copyright (C) 2006 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>
void LoadBlock(unsigned char *dest,unsigned char *source,int blockno,int width, int height,int divisor){
int j,
block_i=blockno/divisor,//place on the grid
block_k=blockno%divisor;
for(j=0;j<height/divisor;j++)//we copy rows
memcpy( &dest[block_i*(width*height/divisor)+j*width+block_k*width/divisor],
&source[j*width/divisor],
width/divisor);
}
void *LoadCache(ProgData *pdata){
yuv_buffer *yuv=&pdata->enc_data->yuv;
gzFile *ifp=NULL;
FILE *ucfp=NULL;
FILE *afp=pdata->cache_data->afp;
FrameHeader fheader;
CachedFrame frame;
int j=0,
nth_cache=1,
audio_end=0,
extra_frames=0,//total number of duplicated frames
missing_frames=0,//if this is found >0 current run will not load
//a frame but it will proccess the previous
thread_exit=0,//0 success, -1 couldn't find files,1 couldn't remove
divisor=16,
blockszy=0,//size of y plane block in bytes
blockszuv=0,//size of u,v plane blocks in bytes
framesize=((snd_pcm_format_width(SND_PCM_FORMAT_S16_LE))/8)*pdata->args.channels;//audio frame size
signed char *sound_data=(signed char *)malloc(pdata->periodsize*framesize);
//we allocate the frame that we will use
INIT_FRAME(&frame,&fheader,yuv)
//and the we open our files
if(!pdata->args.zerocompression){
ifp=gzopen(pdata->cache_data->imgdata,"rb");
if(ifp==NULL){
thread_exit=-1;
pthread_exit(&thread_exit);
}
}
else{
ucfp=fopen(pdata->cache_data->imgdata,"rb");
if(ucfp==NULL){
thread_exit=-1;
pthread_exit(&thread_exit);
}
}
if(!pdata->args.nosound){
afp=fopen(pdata->cache_data->audiodata,"rb");
if(afp==NULL){
thread_exit=-1;
pthread_exit(&thread_exit);
}
}
//these two are likely to be the same, but not guaranteed, especially on
//low resolutions
blockszy=(yuv->y_width*yuv->y_height )/pow(divisor,2);
blockszuv=(yuv->uv_width*yuv->uv_height)/pow(divisor/2,2);
//this will be used now to define if we proccess audio or video
//on any given loop.
pdata->avd=0;
//If sound finishes first,we go on with the video.
//If video ends we will do one more run to flush audio in the ogg file
while(pdata->running){
//video load and encoding
if(pdata->avd<=0 || pdata->args.nosound || audio_end){
if(missing_frames>0){
extra_frames++;
missing_frames--;
SyncEncodeImageBuffer(pdata);
}
else if(((!pdata->args.zerocompression)&&
(gzread(ifp,frame.header,sizeof(FrameHeader))==sizeof(FrameHeader) ))||
((pdata->args.zerocompression)&&
(fread(frame.header,sizeof(FrameHeader),1,ucfp)==1))){
//sync
missing_frames+=frame.header->current_total-(extra_frames+frame.header->frameno);
fprintf(stdout,"\r[%d%%] ",
((frame.header->frameno+extra_frames)*100)/frames_total);
fflush(stdout);
if( (frame.header->Ynum<=pow(divisor,2)) &&
(frame.header->Unum<=pow(divisor/2,2)) &&
(frame.header->Vnum<=pow(divisor/2,2)) &&
(
((!pdata->args.zerocompression)&&
((gzread(ifp,frame.YBlocks,frame.header->Ynum)==frame.header->Ynum) &&
(gzread(ifp,frame.UBlocks,frame.header->Unum)==frame.header->Unum) &&
(gzread(ifp,frame.VBlocks,frame.header->Vnum)==frame.header->Vnum) &&
(gzread(ifp,frame.YData,blockszy*frame.header->Ynum)==blockszy*frame.header->Ynum) &&
(gzread(ifp,frame.UData,(blockszuv*frame.header->Unum))==(blockszuv*frame.header->Unum)) &&
(gzread(ifp,frame.VData,(blockszuv*frame.header->Vnum))==(blockszuv*frame.header->Vnum)))) ||
((pdata->args.zerocompression)&&
((fread(frame.YBlocks,1,frame.header->Ynum,ucfp)==frame.header->Ynum) &&
(fread(frame.UBlocks,1,frame.header->Unum,ucfp)==frame.header->Unum) &&
(fread(frame.VBlocks,1,frame.header->Vnum,ucfp)==frame.header->Vnum) &&
(frame.header->Ynum==0 ||fread(frame.YData,blockszy,frame.header->Ynum,ucfp)==frame.header->Ynum) &&
(frame.header->Unum==0 ||fread(frame.UData,blockszuv,frame.header->Unum,ucfp)==frame.header->Unum) &&
(frame.header->Vnum==0 ||fread(frame.VData,blockszuv,frame.header->Vnum,ucfp)==frame.header->Vnum)))
)
){
//load the blocks for each buffer
if(frame.header->Ynum)
for(j=0;j<frame.header->Ynum;j++)
LoadBlock( yuv->y,
&frame.YData[j*blockszy],
frame.YBlocks[j],
yuv->y_width,
yuv->y_height,
divisor);
if(frame.header->Unum)
for(j=0;j<frame.header->Unum;j++)
LoadBlock( yuv->u,
&frame.UData[j*blockszuv],
frame.UBlocks[j],
yuv->uv_width,
yuv->uv_height,
divisor/2);
if(frame.header->Vnum)
for(j=0;j<frame.header->Vnum;j++)
LoadBlock( yuv->v,
&frame.VData[j*blockszuv],
frame.VBlocks[j],
yuv->uv_width,
yuv->uv_height,
divisor/2);
//encode. This is not made in a thread since now blocking is not a problem
//and this way sync problems can be avoided more easily.
SyncEncodeImageBuffer(pdata);
}
else{
raise(SIGINT);
continue;
}
}
else{
if(SwapCacheFilesRead(pdata->cache_data->imgdata,nth_cache,&ifp,&ucfp)){
raise(SIGINT);
}
else{
fprintf(stderr,"\t[Cache File %d]",nth_cache);
nth_cache++;
}
continue;
}
}
//audio load and encoding
else{
if(!audio_end){
int nbytes=fread(sound_data,pdata->periodsize*framesize,1,afp);
if(nbytes<=0)
audio_end=1;
else
SyncEncodeSoundBuffer(pdata,sound_data);
}
}
}
// SyncEncodeImageBuffer(pdata);
// SyncEncodeSoundBuffer(pdata,sound_data);
pdata->v_encoding_clean=pdata->th_encoding_clean=1;
pthread_cond_signal(&pdata->theora_lib_clean);
pthread_cond_signal(&pdata->vorbis_lib_clean);
fprintf(stdout,"\n");
CLEAR_FRAME(&frame)
free(sound_data);
if(!pdata->args.nosound){
fclose(afp);
}
pthread_exit(&thread_exit);
}
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