forked from tTh/FloatImg
shootgun debugging
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71205d4ab0
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@ -35,6 +35,8 @@
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#define SAVE_AS_CUMUL 1
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#define SAVE_AS_FIMG 0
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#define NBR_BUFFERS 4
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/* --------------------------------------------------------------------- */
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#define CLEAR(x) memset(&(x), 0, sizeof(x))
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@ -192,7 +194,7 @@ if ((fmt.fmt.pix.width != width) || (fmt.fmt.pix.height != height)) {
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fprintf(stderr,"--- Ok 1\n");
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CLEAR(req);
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req.count = 2;
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req.count = NBR_BUFFERS;
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req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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req.memory = V4L2_MEMORY_MMAP;
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xioctl(fd, VIDIOC_REQBUFS, &req);
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@ -220,7 +222,7 @@ for (n_buffers = 0; n_buffers < req.count; ++n_buffers) {
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(void)fimg_timer_set(0);
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for (i = 0; i < n_buffers; ++i) {
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for (i = 0; i < NBR_BUFFERS; ++i) {
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CLEAR(buf);
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buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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buf.memory = V4L2_MEMORY_MMAP;
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@ -286,7 +288,10 @@ for (i = 0; i < nbre_capt; i++) {
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buf.memory = V4L2_MEMORY_MMAP;
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xioctl(fd, VIDIOC_DQBUF, &buf);
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fprintf(stderr, "xioctl VIDIOC_DQBUF done\n"); fflush(stderr);
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if(verbosity > 2) {
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fprintf(stderr, "xioctl VIDIOC_DQBUF done\n");
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fflush(stderr);
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}
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#if SAVE_AS_CUMUL
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if (upscaling) {
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@ -403,7 +408,7 @@ fimg_destroy(&cumul);
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type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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xioctl(fd, VIDIOC_STREAMOFF, &type);
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for (i = 0; i < n_buffers; ++i) {
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for (i = 0; i < NBR_BUFFERS; ++i) {
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v4l2_munmap(buffers[i].start, buffers[i].length);
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}
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@ -15,7 +15,7 @@ de capture des images, précisément dans cet appel système :
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buf.memory = V4L2_MEMORY_MMAP;
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xioctl(fd, VIDIOC_DQBUF, &buf);
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Quand le programme semble figé, un strace -p <pi> sort le même
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Quand le programme semble figé, un strace -p <pid> sort le même
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message en rafale _très_ féroce :
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ioctl(3, VIDIOC_DQBUF, {type=V4L2_BUF_TYPE_VIDEO_CAPTURE}) = -1 EAGAIN (Resource temporarily unavailable)
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