From b91c42837046875cd41420d6d87c5428c2dac31a Mon Sep 17 00:00:00 2001 From: tonton th Date: Sun, 28 Feb 2021 18:18:26 +0100 Subject: [PATCH] opening a raspi bug hunt --- v4l2/grabvidseq.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/v4l2/grabvidseq.c b/v4l2/grabvidseq.c index 16b0acf8..9ef351ca 100644 --- a/v4l2/grabvidseq.c +++ b/v4l2/grabvidseq.c @@ -46,7 +46,8 @@ struct buffer { size_t length; }; -int verbosity; +int verbosity; +static int systrace; /* --------------------------------------------------------------------- */ @@ -54,6 +55,11 @@ static void xioctl(int fh, int request, void *arg) { int r; +/* may be imagine a system for displaying all call to this function ? */ +if (systrace) { + fprintf(stderr, "xioctl fd=%d req=%d arg=%p\n", fh, request, arg); + } + do { r = v4l2_ioctl(fh, request, arg); } while (r == -1 && ((errno == EINTR) || (errno == EAGAIN))); @@ -83,6 +89,7 @@ puts("\t-s WxH\t\tsize of capture"); puts("\t-c mode\t\tcontrast enhancement"); puts("\t-u\t\ttry upscaling..."); puts("\t-v\t\tincrease verbosity"); +puts("\t-Z\t\tenable systrace"); if (verbosity) { puts("\n\t\tXXX list all the contrast modes, please\n"); } @@ -124,7 +131,7 @@ char *outfile = "out.pnm"; FloatImg cumul, tmpfimg, *to_save; #endif -while ((opt = getopt(argc, argv, "c:d:ghn:o:O:p:r:s:uv")) != -1) { +while ((opt = getopt(argc, argv, "c:d:ghn:o:O:p:r:s:uvZ")) != -1) { switch(opt) { case 'c': contrast = fimg_id_contraste(optarg); if (contrast < 0) { @@ -151,7 +158,7 @@ while ((opt = getopt(argc, argv, "c:d:ghn:o:O:p:r:s:uv")) != -1) { break; case 'u': upscaling = 1; break; case 'v': verbosity++; break; - + case 'Z': systrace = 1; break; default: fprintf(stderr, "option '%c' is wtf\n", opt); exit(1);