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/******************************************************************************
* recordMyDesktop *
*******************************************************************************
* *
* Copyright (C) 2006,2007 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 blockwidth){
int j,
block_i=blockno/(width/blockwidth),//place on the grid
block_k=blockno%(width/blockwidth);
for(j=0;j<blockwidth;j++)//we copy rows
memcpy( &dest[(block_i*width+block_k)*blockwidth+j*width],
&source[j*blockwidth],
blockwidth);
}
//returns number of bytes
int ReadZF(void * buffer,size_t size,size_t nmemb,FILE *ucfp,gzFile *ifp){
if((ifp!=NULL && ucfp!=NULL)||
(ifp==NULL && ucfp==NULL))
return -1;
else if(ucfp!=NULL){
return (size*fread(buffer,size,nmemb,ucfp));
}
else
return gzread(ifp,buffer,size*nmemb);
}
int ReadFrame(CachedFrame *frame,FILE *ucfp,gzFile *ifp){
int index_entry_size=sizeof(u_int32_t);
if(frame->header->Ynum>0){
if(ReadZF(frame->YBlocks,
index_entry_size,
frame->header->Ynum,
ucfp,
ifp)!=index_entry_size*frame->header->Ynum){
return -1;
}
}
if(frame->header->Unum>0){
if(ReadZF(frame->UBlocks,
index_entry_size,
frame->header->Unum,
ucfp,
ifp)!=index_entry_size*frame->header->Unum){
return -1;
}
}
if(frame->header->Vnum>0){
if(ReadZF(frame->VBlocks,
index_entry_size,
frame->header->Vnum,
ucfp,
ifp)!=index_entry_size*frame->header->Vnum){
return -1;
}
}
if(frame->header->Ynum>0){
if(ReadZF(frame->YData,
Y_UNIT_BYTES,
frame->header->Ynum,
ucfp,
ifp)!=Y_UNIT_BYTES*frame->header->Ynum){
return -2;
}
}
if(frame->header->Unum>0){
if(ReadZF(frame->UData,
UV_UNIT_BYTES,
frame->header->Unum,
ucfp,
ifp)!=UV_UNIT_BYTES*frame->header->Unum){
return -2;
}
}
if(frame->header->Vnum>0){
if(ReadZF(frame->VData,
UV_UNIT_BYTES,
frame->header->Vnum,
ucfp,
ifp)!=UV_UNIT_BYTES*frame->header->Vnum){
return -2;
}
}
return 0;
}
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
blocknum_x=pdata->enc_data->yuv.y_width/Y_UNIT_WIDTH,
blocknum_y=pdata->enc_data->yuv.y_height/Y_UNIT_WIDTH,
blockszy=Y_UNIT_BYTES,//size of y plane block in bytes
blockszuv=UV_UNIT_BYTES;//size of u,v plane blocks in bytes
#ifdef HAVE_LIBASOUND
int framesize=((snd_pcm_format_width(SND_PCM_FORMAT_S16_LE))/8)*
pdata->args.channels;//audio frame size
#else
int framesize=pdata->args.channels<<1;//Always signed 16 bit data
#endif
#ifdef HAVE_JACK_H
if(pdata->args.use_jack)
framesize=sizeof(jack_default_audio_sample_t)*
pdata->jdata->nports;
#endif
signed char *sound_data=(signed char *)malloc(pdata->periodsize*framesize);
u_int32_t YBlocks[(yuv->y_width*yuv->y_height)/Y_UNIT_BYTES],
UBlocks[(yuv->uv_width*yuv->uv_height)/UV_UNIT_BYTES],
VBlocks[(yuv->uv_width*yuv->uv_height)/UV_UNIT_BYTES];
//we allocate the frame that we will use
INIT_FRAME(&frame,&fheader,yuv,
YBlocks,UBlocks,VBlocks)
//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);
}
}
//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<=blocknum_x*blocknum_y) &&
(frame.header->Unum<=blocknum_x*blocknum_y) &&
(frame.header->Vnum<=blocknum_x*blocknum_y) &&
(!ReadFrame(&frame,
((pdata->args.zerocompression)?ucfp:NULL),
((pdata->args.zerocompression)?NULL:ifp)))
){
//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,
Y_UNIT_WIDTH);
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,
UV_UNIT_WIDTH);
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,
UV_UNIT_WIDTH);
//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,1,pdata->periodsize*framesize,afp);
if(nbytes<=0)
audio_end=1;
else
SyncEncodeSoundBuffer(pdata,sound_data);
}
}
}
pdata->v_encoding_clean=pdata->th_encoding_clean=1;
pthread_mutex_lock(&pdata->theora_lib_mutex);
pthread_cond_signal(&pdata->theora_lib_clean);
pthread_mutex_unlock(&pdata->theora_lib_mutex);
pthread_mutex_lock(&pdata->vorbis_lib_mutex);
pthread_cond_signal(&pdata->vorbis_lib_clean);
pthread_mutex_unlock(&pdata->vorbis_lib_mutex);
fprintf(stdout,"\n");
CLEAR_FRAME(&frame)
free(sound_data);
if(!pdata->args.nosound){
fclose(afp);
}
pthread_exit(&thread_exit);
}
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