[media] DocBook media: fix coding style in the control example code
Use the proper kernel coding style in these examples. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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@ -441,61 +441,60 @@ more menu type controls.</para>
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&v4l2-queryctrl; queryctrl;
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&v4l2-querymenu; querymenu;
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static void
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enumerate_menu (void)
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static void enumerate_menu(void)
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{
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printf (" Menu items:\n");
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printf(" Menu items:\n");
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memset (&querymenu, 0, sizeof (querymenu));
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memset(&querymenu, 0, sizeof(querymenu));
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querymenu.id = queryctrl.id;
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for (querymenu.index = queryctrl.minimum;
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querymenu.index <= queryctrl.maximum;
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querymenu.index++) {
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if (0 == ioctl (fd, &VIDIOC-QUERYMENU;, &querymenu)) {
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printf (" %s\n", querymenu.name);
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querymenu.index++) {
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if (0 == ioctl(fd, &VIDIOC-QUERYMENU;, &querymenu)) {
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printf(" %s\n", querymenu.name);
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}
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}
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}
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memset (&queryctrl, 0, sizeof (queryctrl));
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memset(&queryctrl, 0, sizeof(queryctrl));
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for (queryctrl.id = V4L2_CID_BASE;
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queryctrl.id < V4L2_CID_LASTP1;
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queryctrl.id++) {
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if (0 == ioctl (fd, &VIDIOC-QUERYCTRL;, &queryctrl)) {
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if (0 == ioctl(fd, &VIDIOC-QUERYCTRL;, &queryctrl)) {
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if (queryctrl.flags & V4L2_CTRL_FLAG_DISABLED)
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continue;
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printf ("Control %s\n", queryctrl.name);
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printf("Control %s\n", queryctrl.name);
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if (queryctrl.type == V4L2_CTRL_TYPE_MENU)
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enumerate_menu ();
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enumerate_menu();
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} else {
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if (errno == EINVAL)
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continue;
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perror ("VIDIOC_QUERYCTRL");
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exit (EXIT_FAILURE);
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perror("VIDIOC_QUERYCTRL");
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exit(EXIT_FAILURE);
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}
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}
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for (queryctrl.id = V4L2_CID_PRIVATE_BASE;;
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queryctrl.id++) {
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if (0 == ioctl (fd, &VIDIOC-QUERYCTRL;, &queryctrl)) {
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if (0 == ioctl(fd, &VIDIOC-QUERYCTRL;, &queryctrl)) {
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if (queryctrl.flags & V4L2_CTRL_FLAG_DISABLED)
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continue;
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printf ("Control %s\n", queryctrl.name);
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printf("Control %s\n", queryctrl.name);
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if (queryctrl.type == V4L2_CTRL_TYPE_MENU)
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enumerate_menu ();
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enumerate_menu();
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} else {
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if (errno == EINVAL)
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break;
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perror ("VIDIOC_QUERYCTRL");
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exit (EXIT_FAILURE);
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perror("VIDIOC_QUERYCTRL");
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exit(EXIT_FAILURE);
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}
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}
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</programlisting>
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@ -508,53 +507,53 @@ for (queryctrl.id = V4L2_CID_PRIVATE_BASE;;
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&v4l2-queryctrl; queryctrl;
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&v4l2-control; control;
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memset (&queryctrl, 0, sizeof (queryctrl));
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memset(&queryctrl, 0, sizeof(queryctrl));
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queryctrl.id = V4L2_CID_BRIGHTNESS;
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if (-1 == ioctl (fd, &VIDIOC-QUERYCTRL;, &queryctrl)) {
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if (-1 == ioctl(fd, &VIDIOC-QUERYCTRL;, &queryctrl)) {
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if (errno != EINVAL) {
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perror ("VIDIOC_QUERYCTRL");
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exit (EXIT_FAILURE);
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perror("VIDIOC_QUERYCTRL");
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exit(EXIT_FAILURE);
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} else {
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printf ("V4L2_CID_BRIGHTNESS is not supported\n");
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printf("V4L2_CID_BRIGHTNESS is not supported\n");
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}
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} else if (queryctrl.flags & V4L2_CTRL_FLAG_DISABLED) {
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printf ("V4L2_CID_BRIGHTNESS is not supported\n");
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printf("V4L2_CID_BRIGHTNESS is not supported\n");
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} else {
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memset (&control, 0, sizeof (control));
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memset(&control, 0, sizeof (control));
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control.id = V4L2_CID_BRIGHTNESS;
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control.value = queryctrl.default_value;
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if (-1 == ioctl (fd, &VIDIOC-S-CTRL;, &control)) {
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perror ("VIDIOC_S_CTRL");
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exit (EXIT_FAILURE);
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if (-1 == ioctl(fd, &VIDIOC-S-CTRL;, &control)) {
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perror("VIDIOC_S_CTRL");
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exit(EXIT_FAILURE);
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}
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}
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memset (&control, 0, sizeof (control));
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memset(&control, 0, sizeof(control));
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control.id = V4L2_CID_CONTRAST;
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if (0 == ioctl (fd, &VIDIOC-G-CTRL;, &control)) {
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if (0 == ioctl(fd, &VIDIOC-G-CTRL;, &control)) {
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control.value += 1;
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/* The driver may clamp the value or return ERANGE, ignored here */
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if (-1 == ioctl (fd, &VIDIOC-S-CTRL;, &control)
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if (-1 == ioctl(fd, &VIDIOC-S-CTRL;, &control)
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&& errno != ERANGE) {
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perror ("VIDIOC_S_CTRL");
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exit (EXIT_FAILURE);
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perror("VIDIOC_S_CTRL");
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exit(EXIT_FAILURE);
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}
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/* Ignore if V4L2_CID_CONTRAST is unsupported */
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} else if (errno != EINVAL) {
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perror ("VIDIOC_G_CTRL");
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exit (EXIT_FAILURE);
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perror("VIDIOC_G_CTRL");
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exit(EXIT_FAILURE);
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}
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control.id = V4L2_CID_AUDIO_MUTE;
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control.value = TRUE; /* silence */
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control.value = 1; /* silence */
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/* Errors ignored */
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ioctl (fd, VIDIOC_S_CTRL, &control);
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ioctl(fd, VIDIOC_S_CTRL, &control);
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</programlisting>
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</example>
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</section>
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@ -675,12 +674,12 @@ control class is found:</para>
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<informalexample>
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<programlisting>
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qctrl.id = V4L2_CTRL_CLASS_MPEG | V4L2_CTRL_FLAG_NEXT_CTRL;
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while (0 == ioctl (fd, &VIDIOC-QUERYCTRL;, &qctrl)) {
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if (V4L2_CTRL_ID2CLASS (qctrl.id) != V4L2_CTRL_CLASS_MPEG)
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while (0 == ioctl(fd, &VIDIOC-QUERYCTRL;, &qctrl)) {
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if (V4L2_CTRL_ID2CLASS(qctrl.id) != V4L2_CTRL_CLASS_MPEG)
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break;
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/* ... */
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qctrl.id |= V4L2_CTRL_FLAG_NEXT_CTRL;
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}
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qctrl.id |= V4L2_CTRL_FLAG_NEXT_CTRL;
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}
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</programlisting>
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</informalexample>
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