summaryrefslogtreecommitdiff
path: root/recordmydesktop/src/load_cache.c
blob: 76937740d2bdeb770fcc1bd1a10166aa3c818429 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
/*********************************************************************************
*                             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);


}
© All Rights Reserved