random patchys...

v4l2/README.md

@@ -0,0 +1,32 @@
+# Images en virgule flottante, video 4 linux
+
+## grabvidseq
+
+```
+tth@lubitel:~/Devel/FloatImg/v4l2$ ./grabvidseq -h
+options :
+        -d /dev/?       select video device
+        -g              convert to gray
+        -n NNN          how many frames ?
+        -O ./           set Output dir
+        -o bla.xxx      set output filename
+        -p NN.N         period in seconds
+        -r 90           rotate picture
+        -s WxH          size of capture
+        -c mode         contrast enhancement
+        -u              try upscaling...
+        -v              increase verbosity
+```
+
+## video-infos
+
+```
+Options :
+        -e N            examine that, please
+        -d              select the video device
+        -K              set the K parameter
+        -l              list video devices
+        -T bla          add a title
+        -v              increase verbosity
+```
+

v4l2/README.txt

@@ -2,10 +2,6 @@
 			capture video
 			-------------
 
-
-
-
-
 ------------------------------------------------------------------------
 
 <paulk-leonov> tth: en faisant de la revue de patch sur V4L2, j'apprends
@@ -13,3 +9,5 @@
    le premier concerne le champ flags de la structure de l'ioctl enum_fmt
    et le second le champ flag de la structure de g_fmt.
 
+------------------------------------------------------------------------
+

v4l2/essai.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+#  -----------------------------------------------------
+
+TMPF="tmp.fimg"
+CAM="/dev/video0"
+
+#  -----------------------------------------------------
+
+./grabvidseq -d $CAM -n 10000 -vv -p 0 -r 90
+
+#  -----------------------------------------------------

v4l2/grabvidseq.c

@@ -100,27 +100,28 @@ int                             r, fd = -1;
 unsigned int                    i, n_buffers;
 char                            *dev_name = "/dev/video0";
 
-FILE                            *fout;
+// XXX FILE                            *fout;
 struct buffer                   *buffers;
 
-int		foo, bar;
-double		period = 10.0;		/* delai entre les captures */
-int		nbre_capt = 1;		/* nombre de captures */
+int		foo;
+double		period = 10.0;			/* delai entre les captures */
+int		nbre_capt = 1;			/* nombre de captures */
 int		opt;
 int		width = 640;
 int		height = 480;
 double		t_final, maxvalue;
 int		to_gray = 0;
 int		upscaling = 0;
-int		contrast = 0;
-char		*dest_dir = ".";	/* no trailing slash */
+int		contrast = CONTRAST_NONE;
+int		rotfactor = 0;			/* only 0 or 90 here */
+char		*dest_dir = ".";		/* no trailing slash */
 char		*outfile = "out.pnm";
 
 #if SAVE_AS_CUMUL
-FloatImg	cumul;
+FloatImg	cumul, tmpfimg, *to_save;
 #endif
 
-while ((opt = getopt(argc, argv, "c:d:ghn:o:O:p:s:uv")) != -1) {
+while ((opt = getopt(argc, argv, "c:d:ghn:o:O:p:r:s:uv")) != -1) {
 	switch(opt) {
 		case 'c':	contrast = fimg_id_contraste(optarg);
 				if (contrast < 0) {
@@ -143,10 +144,15 @@ while ((opt = getopt(argc, argv, "c:d:ghn:o:O:p:s:uv")) != -1) {
 					}
 				period *= 1e6;
 				break;
+		case 'r':	rotfactor = atoi(optarg);	break;
 		case 's':	parse_WxH(optarg, &width, &height);
 				break;
 		case 'u':	upscaling = 1;			break;
 		case 'v':	verbosity++;			break;
+
+		default:
+			fprintf(stderr, "option '%c' is wtf\n", opt);
+			exit(1);
 		}
 	}
 
@@ -155,6 +161,7 @@ if (verbosity > 1) {
 	fprintf(stderr, "grabing %d picz\n", nbre_capt);
 	fprintf(stderr, "period is %.3f milliseconds\n", period/1e3);
 	fprintf(stderr, "framesize is %dx%d\n", width, height);
+	fprintf(stderr, "destdir is '%s'\n", dest_dir);
 	if (upscaling) fprintf(stderr, "upscaling is on\n");
 	}
 
@@ -233,6 +240,8 @@ else	{
 fimg_clear(&cumul);
 cumul.fval = 255.0;
 cumul.count = 0;
+
+to_save = &cumul;
 #endif
 
 
@@ -327,6 +336,7 @@ if (to_gray) {
 	foo = fimg_to_gray(&cumul);
 	}
 
+
 #if SAVE_AS_CUMUL
 	// save cumul to file
 if (verbosity) fprintf(stderr, "saving cumul to '%s'\n", outfile);
@@ -357,6 +367,18 @@ switch (contrast) {
 		break;
 	}
 
+/* XXX warning, new from coronahome 26 mars 2020 */
+if (90 == rotfactor) {
+	memset(&tmpfimg, 0, sizeof(FloatImg));
+	foo = fimg_rotate_90(&cumul, &tmpfimg, 0);
+	if (verbosity > 1) {
+		fprintf(stderr, "dump rot90 %p\n", &tmpfimg);
+		foo = fimg_save_as_png(&tmpfimg, "rot90.png", 0);
+		}
+	to_save = &tmpfimg;
+	}
+
+
 foo = format_from_extension(outfile);
 switch (foo) {
 	case FILE_TYPE_FIMG:
@@ -373,6 +395,9 @@ switch (foo) {
 		break;
 	}
 	// free buffers
+
+
+
 fimg_destroy(&cumul);
 #endif
 

v4l2/v4l2_pr_structs.h

@@ -16,7 +16,7 @@ char *str_ctrl_type(int type);
 char *str_buf_type(int type);
 char *str_fourcc(uint32_t fcc);		/* NOT REENTRANT */
 
-void pr_ctrl_id(uint32_t id);
+void pr_ctrl_id(uint32_t id);		/* bit dissector */
 
 /* --------------------------------------------------------------------- */