├── .gitignore
├── README
├── asciiplay.c
├── asciirec.c
└── star wars asciimation.zip


/.gitignore:
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1 | *.o
2 | *.exe
3 | *~
4 | asciirec
5 | asciiplay
6 | 


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/README:
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 1 | asciirec/asciiplay - terminal recording and playback
 2 | 
 3 | Compiling
 4 | 
 5 | gcc -o asciirec asciirec.c
 6 | gcc -o asciiplay asciiplay.c
 7 | 
 8 | Usage
 9 | 
10 | output | asciirec [args]
11 | asciiplay file
12 | 
13 | Args
14 | 
15 | -filename <filename>	- output filename
16 | -fps <fps>		- how many times per second to capture input.  
17 | 			  More captures will mean smoother playback, but 
18 | 			  might be too heavy for slower machines.
19 | -maxfs <bytes>		- max size in bytes per frame.  Set this higher 
20 | 			  if your output is spitting out a LOT of text 
21 | 			  very fast.  Side effect: your terminal might 
22 | 			  not be able to output that much text for the 
23 | 			  duration of a frame.
24 | 
25 | File format
26 | 
27 | 4 bytes		ATXT idenfitication header	"ATXT"
28 | 4 bytes		Revision			1, this version
29 | 4 bytes		Max Frame size			32768 by default
30 | 4 bytes		frame period in microseconds, 
31 | 		rounded to the nearest 1000	1000/15 by default
32 | 		Frames ...
33 | 
34 | Frame format
35 | 
36 | 4 bytes		frame size in bytes
37 | 		Data ...
38 | 


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/asciiplay.c:
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 1 | #include <stdio.h>
 2 | #include <stdlib.h>
 3 | #include <string.h>
 4 | #include <unistd.h>
 5 | 
 6 | const int MAGICNUMBER = 0x54585441; //ATXT
 7 | const int MAXREVISION = 1;
 8 | 
 9 | int main(int argc, char **argv) {
10 | 	FILE *ifile;
11 | 
12 | 	int maxfs;
13 | 	int period;
14 | 
15 | 	if(argc > 1) {
16 | 		ifile = fopen(argv[1], "rb");
17 | 	} else {
18 | 		fprintf(stderr, "ERROR: You must specify an input filename.\n");
19 | 		return(-1);
20 | 	}
21 | 
22 | 	int t;
23 | 	fread(&t, sizeof(int), 1, ifile);
24 | 	if(t != MAGICNUMBER) {
25 | 		fprintf(stderr, "ERROR: This does not appear to be a valid ATXT file.  Change the first 4 bytes to contain ATXT and try again.\n");
26 | 		return(-1);
27 | 	} else {
28 | 		fprintf(stderr, "ATXT file format detected.\n");
29 | 	}
30 | 	fread(&t, sizeof(int), 1, ifile);
31 | 	if(t > MAXREVISION) {
32 | 		fprintf(stderr, "ERROR: This file appears to be from a newer version of asciirec, it will likely not play.  Try changing the version in the header to &d (bytes 4 to 7).\n");
33 | 		return(-1);
34 | 	}
35 | 	fread(&maxfs, sizeof(int), 1, ifile);
36 | 	fread(&period, sizeof(int), 1, ifile);
37 | 	fprintf(stderr, "Frame period is %d with a max frame size of %d.\n", period, maxfs);
38 | 
39 | 	char* fb = (char*)malloc(maxfs * sizeof(char));
40 | 	if(fb == NULL) {
41 | 		fprintf(stderr, "ERROR: Couldn't allocate the requested %d bytes of memory.  Maybe free up some memory, and try again.  Otherwise, your computer doesn't have enough RAM or the file is malformed.\n", maxfs);
42 | 		return(-1);
43 | 	}
44 | 	
45 | 	fprintf(stderr, "Starting playback...\n");
46 | 
47 | 	int fs;
48 | 	while(!feof(ifile)) {
49 | 		fread(&fs, sizeof(int), 1, ifile);
50 | 		fread(fb, sizeof(char), fs, ifile);
51 | 		fwrite(fb, sizeof(char), fs, stdout);
52 | 		usleep(period);
53 | 	}
54 | 	return(0);
55 | }
56 | 


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/asciirec.c:
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 1 | #include <stdio.h>
 2 | #include <stdlib.h>
 3 | #include <string.h>
 4 | #include <unistd.h>
 5 | #include <fcntl.h>
 6 | 
 7 | #define DEFAULTFPS (15)
 8 | #define DEFAULTFILE "out.atxt"
 9 | const int MAGICNUMBER = 0x54585441; //ATXT
10 | const int REVISION = 1;
11 | #define DMAXFRAMESIZE (32767)
12 | 
13 | int main(int argc, char **argv) {
14 | 	int fps = DEFAULTFPS;
15 | 	int maxfs = DMAXFRAMESIZE;
16 | 	char *outfile = (char*)malloc((strlen(DEFAULTFILE)+1) * sizeof(char));
17 | 	strcpy(outfile, DEFAULTFILE);
18 | 	if(argc > 2) {
19 | 		int i;
20 | 		for(i = 1; i < argc - 1; i++) {
21 | 			if(strcmp(argv[i], "-maxfs") == 0) {
22 | 				maxfs = atoi(argv[i+1]);
23 | 				if(maxfs < 1) maxfs = DMAXFRAMESIZE;
24 | 			} else if(strcmp(argv[i], "-fps") == 0) {
25 | 				fps = atoi(argv[i+1]);
26 | 				if(fps < 1) fps = DEFAULTFPS;
27 | 			} else if (strcmp(argv[i], "-filename") == 0) {
28 | 				free(outfile);
29 | 				outfile = (char*)malloc((strlen(argv[i+1])+1) * sizeof(char));
30 | 				strcpy(outfile, argv[i+1]);
31 | 			}
32 | 		}
33 | 	}
34 | 
35 | 	char* fb = (char*)malloc(maxfs * sizeof(char));
36 | 	if(fb == NULL) {
37 | 		fprintf(stderr, "WARNING: Couldn't allocate %d bytes for buffer, trying default of %d.\n", maxfs, DMAXFRAMESIZE);
38 | 		fb = (char*)malloc(DMAXFRAMESIZE * sizeof(char));
39 | 		maxfs = DMAXFRAMESIZE;
40 | 		if(fb == NULL) {
41 | 			fprintf(stderr, "ERROR: Couldn't allocate default buffer size, try specifying a lower size with -maxfs or freeing up some memory.\n");
42 | 			return(-1);
43 | 		}
44 | 	}
45 | 	
46 | 	fprintf(stderr, "Recording to %s at %d FPS.\n", outfile, fps);
47 | 	FILE *o = fopen(outfile, "wb");
48 | 	fwrite(&MAGICNUMBER, sizeof(int), 1, o);
49 | 	fwrite(&REVISION, sizeof(int), 1, o);
50 | 	int period = 1000/fps*1000; //To keep the value as multiple of 1000, and a sane minimum value.
51 | 	if(period == 0) {
52 | 		fprintf(stderr, "WARNING: INSANELY HIGH FPS!  Capped to 1000!  Performance WILL suffer.\n");
53 | 		period = 1;
54 | 	}
55 | 	fwrite(&maxfs, sizeof(int), 1, o);
56 | 	fwrite(&period, sizeof(int), 1, o);
57 | 
58 | 	int flags = fcntl(0, F_GETFL, 0);
59 | 	flags |= O_NONBLOCK;
60 | 	fcntl(0, F_SETFL, flags);
61 | 
62 | 	int fs, i;
63 | 	while(!feof(stdin)) {
64 | 		fs = fread(fb, sizeof(char), maxfs, stdin);
65 | 		fwrite(&fs, sizeof(int), 1, o);
66 | 		fwrite(fb, sizeof(char), fs, o);
67 | 		usleep(period);
68 | 	}
69 | 	return(0);
70 | }
71 | 


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/star wars asciimation.zip:
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https://raw.githubusercontent.com/paulguy/asciirec/60d5a06b13e1072f80a98650180978cc39ace2b2/star wars asciimation.zip


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