V4L/DVB (4861): Remove the need of a STD array for drivers using video_ioctl2
video_ioctl2 will auto-generate standard entries at ENUM_FMT. Also, now, a driver may return a subset of the video array at the return, to be stored as the current_norm. For example, a driver may ask for V4L2_STD_PAL. At return, driver may change it to V4L2_STD_PAL_B. This way, a futher call to G_STD will return the exact detected video std. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Mauro Carvalho Chehab
parent
207705cd7f
commit
e75f9cee32
5 changed files with 164 additions and 85 deletions
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@ -1679,24 +1679,11 @@ static int cafe_vidioc_s_input(struct file *filp, void *priv, unsigned int i)
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}
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/* from vivi.c */
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static int cafe_vidioc_s_std(struct file *filp, void *priv, v4l2_std_id a)
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static int cafe_vidioc_s_std(struct file *filp, void *priv, v4l2_std_id *a)
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{
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return 0;
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}
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/*
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* The TV Norm stuff is weird - we're a camera with little to do with TV,
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* really. The following is what vivi does.
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*/
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static struct v4l2_tvnorm cafe_tvnorm[] = {
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{
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.name = "NTSC-M",
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.id = V4L2_STD_NTSC_M,
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}
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};
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static void cafe_v4l_dev_release(struct video_device *vd)
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{
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struct cafe_camera *cam = container_of(vd, struct cafe_camera, v4ldev);
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@ -1726,8 +1713,7 @@ static struct video_device cafe_v4l_template = {
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.type = VFL_TYPE_GRABBER,
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.type2 = VID_TYPE_CAPTURE,
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.minor = -1, /* Get one dynamically */
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.tvnorms = cafe_tvnorm,
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.tvnormsize = 1,
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.tvnorms = V4L2_STD_NTSC_M,
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.current_norm = V4L2_STD_NTSC_M, /* make mplayer happy */
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.fops = &cafe_v4l_fops,
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@ -87,6 +87,78 @@ MODULE_LICENSE("GPL");
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*/
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char *v4l2_norm_to_name(v4l2_std_id id)
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{
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char *name;
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switch (id) {
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case V4L2_STD_PAL:
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name="PAL"; break;
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case V4L2_STD_PAL_BG:
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name="PAL-BG"; break;
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case V4L2_STD_PAL_DK:
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name="PAL-DK"; break;
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case V4L2_STD_PAL_B:
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name="PAL-B"; break;
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case V4L2_STD_PAL_B1:
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name="PAL-B1"; break;
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case V4L2_STD_PAL_G:
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name="PAL-G"; break;
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case V4L2_STD_PAL_H:
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name="PAL-H"; break;
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case V4L2_STD_PAL_I:
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name="PAL-I"; break;
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case V4L2_STD_PAL_D:
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name="PAL-D"; break;
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case V4L2_STD_PAL_D1:
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name="PAL-D1"; break;
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case V4L2_STD_PAL_K:
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name="PAL-K"; break;
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case V4L2_STD_PAL_M:
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name="PAL-M"; break;
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case V4L2_STD_PAL_N:
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name="PAL-N"; break;
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case V4L2_STD_PAL_Nc:
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name="PAL-Nc"; break;
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case V4L2_STD_PAL_60:
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name="PAL-60"; break;
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case V4L2_STD_NTSC:
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name="NTSC"; break;
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case V4L2_STD_NTSC_M:
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name="NTSC-M"; break;
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case V4L2_STD_NTSC_M_JP:
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name="NTSC-M-JP"; break;
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case V4L2_STD_NTSC_443:
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name="NTSC-443"; break;
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case V4L2_STD_NTSC_M_KR:
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name="NTSC-M-KR"; break;
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case V4L2_STD_SECAM:
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name="SECAM"; break;
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case V4L2_STD_SECAM_DK:
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name="SECAM-DK"; break;
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case V4L2_STD_SECAM_B:
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name="SECAM-B"; break;
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case V4L2_STD_SECAM_D:
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name="SECAM-D"; break;
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case V4L2_STD_SECAM_G:
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name="SECAM-G"; break;
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case V4L2_STD_SECAM_H:
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name="SECAM-H"; break;
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case V4L2_STD_SECAM_K:
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name="SECAM-K"; break;
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case V4L2_STD_SECAM_K1:
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name="SECAM-K1"; break;
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case V4L2_STD_SECAM_L:
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name="SECAM-L"; break;
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case V4L2_STD_SECAM_LC:
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name="SECAM-LC"; break;
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default:
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name="Unknown"; break;
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}
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return name;
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}
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/* Fill in the fields of a v4l2_standard structure according to the
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'id' and 'transmission' parameters. Returns negative on error. */
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int v4l2_video_std_construct(struct v4l2_standard *vs,
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@ -1453,6 +1525,7 @@ u32 v4l2_ctrl_next(const u32 * const * ctrl_classes, u32 id)
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/* ----------------------------------------------------------------- */
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EXPORT_SYMBOL(v4l2_norm_to_name);
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EXPORT_SYMBOL(v4l2_video_std_construct);
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EXPORT_SYMBOL(v4l2_prio_init);
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@ -833,20 +833,85 @@ static int __video_do_ioctl(struct inode *inode, struct file *file,
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case VIDIOC_ENUMSTD:
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{
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struct v4l2_standard *p = arg;
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unsigned int index = p->index;
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v4l2_std_id id = vfd->tvnorms,curr_id=0;
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unsigned int index = p->index,i;
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if (!vfd->tvnormsize) {
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printk (KERN_WARNING "%s: no TV norms defined!\n",
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vfd->name);
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break;
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}
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if (index<0 || index >= vfd->tvnormsize) {
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if (index<0) {
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ret=-EINVAL;
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break;
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}
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v4l2_video_std_construct(p, vfd->tvnorms[p->index].id,
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vfd->tvnorms[p->index].name);
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/* Return norm array on a canonical way */
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for (i=0;i<= index && id; i++) {
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if ( (id & V4L2_STD_PAL) == V4L2_STD_PAL) {
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curr_id = V4L2_STD_PAL;
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} else if ( (id & V4L2_STD_PAL_BG) == V4L2_STD_PAL_BG) {
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curr_id = V4L2_STD_PAL_BG;
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} else if ( (id & V4L2_STD_PAL_DK) == V4L2_STD_PAL_DK) {
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curr_id = V4L2_STD_PAL_DK;
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} else if ( (id & V4L2_STD_PAL_B) == V4L2_STD_PAL_B) {
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curr_id = V4L2_STD_PAL_B;
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} else if ( (id & V4L2_STD_PAL_B1) == V4L2_STD_PAL_B1) {
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curr_id = V4L2_STD_PAL_B1;
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} else if ( (id & V4L2_STD_PAL_G) == V4L2_STD_PAL_G) {
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curr_id = V4L2_STD_PAL_G;
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} else if ( (id & V4L2_STD_PAL_H) == V4L2_STD_PAL_H) {
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curr_id = V4L2_STD_PAL_H;
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} else if ( (id & V4L2_STD_PAL_I) == V4L2_STD_PAL_I) {
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curr_id = V4L2_STD_PAL_I;
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} else if ( (id & V4L2_STD_PAL_D) == V4L2_STD_PAL_D) {
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curr_id = V4L2_STD_PAL_D;
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} else if ( (id & V4L2_STD_PAL_D1) == V4L2_STD_PAL_D1) {
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curr_id = V4L2_STD_PAL_D1;
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} else if ( (id & V4L2_STD_PAL_K) == V4L2_STD_PAL_K) {
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curr_id = V4L2_STD_PAL_K;
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} else if ( (id & V4L2_STD_PAL_M) == V4L2_STD_PAL_M) {
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curr_id = V4L2_STD_PAL_M;
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} else if ( (id & V4L2_STD_PAL_N) == V4L2_STD_PAL_N) {
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curr_id = V4L2_STD_PAL_N;
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} else if ( (id & V4L2_STD_PAL_Nc) == V4L2_STD_PAL_Nc) {
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curr_id = V4L2_STD_PAL_Nc;
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} else if ( (id & V4L2_STD_PAL_60) == V4L2_STD_PAL_60) {
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curr_id = V4L2_STD_PAL_60;
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} else if ( (id & V4L2_STD_NTSC) == V4L2_STD_NTSC) {
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curr_id = V4L2_STD_NTSC;
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} else if ( (id & V4L2_STD_NTSC_M) == V4L2_STD_NTSC_M) {
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curr_id = V4L2_STD_NTSC_M;
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} else if ( (id & V4L2_STD_NTSC_M_JP) == V4L2_STD_NTSC_M_JP) {
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curr_id = V4L2_STD_NTSC_M_JP;
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} else if ( (id & V4L2_STD_NTSC_443) == V4L2_STD_NTSC_443) {
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curr_id = V4L2_STD_NTSC_443;
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} else if ( (id & V4L2_STD_NTSC_M_KR) == V4L2_STD_NTSC_M_KR) {
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curr_id = V4L2_STD_NTSC_M_KR;
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} else if ( (id & V4L2_STD_SECAM) == V4L2_STD_SECAM) {
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curr_id = V4L2_STD_SECAM;
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} else if ( (id & V4L2_STD_SECAM_DK) == V4L2_STD_SECAM_DK) {
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curr_id = V4L2_STD_SECAM_DK;
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} else if ( (id & V4L2_STD_SECAM_B) == V4L2_STD_SECAM_B) {
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curr_id = V4L2_STD_SECAM_B;
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} else if ( (id & V4L2_STD_SECAM_D) == V4L2_STD_SECAM_D) {
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curr_id = V4L2_STD_SECAM_D;
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} else if ( (id & V4L2_STD_SECAM_G) == V4L2_STD_SECAM_G) {
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curr_id = V4L2_STD_SECAM_G;
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} else if ( (id & V4L2_STD_SECAM_H) == V4L2_STD_SECAM_H) {
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curr_id = V4L2_STD_SECAM_H;
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} else if ( (id & V4L2_STD_SECAM_K) == V4L2_STD_SECAM_K) {
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curr_id = V4L2_STD_SECAM_K;
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} else if ( (id & V4L2_STD_SECAM_K1) == V4L2_STD_SECAM_K1) {
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curr_id = V4L2_STD_SECAM_K1;
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} else if ( (id & V4L2_STD_SECAM_L) == V4L2_STD_SECAM_L) {
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curr_id = V4L2_STD_SECAM_L;
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} else if ( (id & V4L2_STD_SECAM_LC) == V4L2_STD_SECAM_LC) {
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curr_id = V4L2_STD_SECAM_LC;
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} else {
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break;
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}
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id &= ~curr_id;
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}
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if (i<=index)
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return -EINVAL;
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v4l2_video_std_construct(p, curr_id,v4l2_norm_to_name(curr_id));
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p->index = index;
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dbgarg (cmd, "index=%d, id=%Ld, name=%s, fps=%d/%d, "
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@ -872,39 +937,23 @@ static int __video_do_ioctl(struct inode *inode, struct file *file,
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}
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case VIDIOC_S_STD:
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{
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v4l2_std_id *id = arg;
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unsigned int i;
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if (!vfd->tvnormsize) {
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printk (KERN_WARNING "%s: no TV norms defined!\n",
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vfd->name);
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break;
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}
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v4l2_std_id *id = arg,norm;
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dbgarg (cmd, "value=%Lu\n", (long long unsigned) *id);
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/* First search for exact match */
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for (i = 0; i < vfd->tvnormsize; i++)
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if (*id == vfd->tvnorms[i].id)
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break;
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/* Then for a generic video std that contains desired std */
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if (i == vfd->tvnormsize)
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for (i = 0; i < vfd->tvnormsize; i++)
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if (*id & vfd->tvnorms[i].id)
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break;
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if (i == vfd->tvnormsize) {
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norm = (*id) & vfd->tvnorms;
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if ( vfd->tvnorms && !norm) /* Check if std is supported */
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break;
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}
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/* Calls the specific handler */
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if (vfd->vidioc_s_std)
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ret=vfd->vidioc_s_std(file, fh, i);
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ret=vfd->vidioc_s_std(file, fh, &norm);
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else
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ret=-EINVAL;
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/* Updates standard information */
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if (!ret)
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vfd->current_norm=*id;
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if (ret>=0)
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vfd->current_norm=norm;
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break;
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}
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@ -1296,25 +1345,12 @@ static int __video_do_ioctl(struct inode *inode, struct file *file,
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ret=vfd->vidioc_g_parm(file, fh, p);
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} else {
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struct v4l2_standard s;
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int i;
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if (!vfd->tvnormsize) {
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printk (KERN_WARNING "%s: no TV norms defined!\n",
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vfd->name);
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break;
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}
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if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
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return -EINVAL;
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for (i = 0; i < vfd->tvnormsize; i++)
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if (vfd->tvnorms[i].id == vfd->current_norm)
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break;
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if (i >= vfd->tvnormsize)
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return -EINVAL;
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v4l2_video_std_construct(&s, vfd->current_norm,
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vfd->tvnorms[i].name);
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v4l2_norm_to_name(vfd->current_norm));
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memset(p,0,sizeof(*p));
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@ -1044,16 +1044,8 @@ static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
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return (0);
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}
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static struct v4l2_tvnorm tvnorms[] = {
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{
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.name = "NTSC-M",
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.id = V4L2_STD_NTSC_M,
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}
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};
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static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id a)
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static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *i)
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{
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return 0;
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}
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@ -1333,8 +1325,8 @@ static struct video_device vivi = {
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#ifdef CONFIG_VIDEO_V4L1_COMPAT
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.vidiocgmbuf = vidiocgmbuf,
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#endif
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.tvnorms = tvnorms,
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.tvnormsize = ARRAY_SIZE(tvnorms),
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.tvnorms = V4L2_STD_NTSC_M,
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.current_norm = V4L2_STD_NTSC_M,
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};
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/* -----------------------------------------------------------------
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Initialization and module stuff
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@ -1361,8 +1353,6 @@ static int __init vivi_init(void)
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dev->vidq.timeout.data = (unsigned long)dev;
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init_timer(&dev->vidq.timeout);
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vivi.current_norm = tvnorms[0].id;
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ret = video_register_device(&vivi, VFL_TYPE_GRABBER, video_nr);
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printk(KERN_INFO "Video Technology Magazine Virtual Video Capture Board (Load status: %d)\n", ret);
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return ret;
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@ -43,6 +43,7 @@
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/* Video standard functions */
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extern unsigned int v4l2_video_std_fps(struct v4l2_standard *vs);
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extern char *v4l2_norm_to_name(v4l2_std_id id);
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extern int v4l2_video_std_construct(struct v4l2_standard *vs,
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int id, char *name);
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@ -81,12 +82,6 @@ extern long v4l_compat_ioctl32(struct file *file, unsigned int cmd,
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* This version moves redundant code from video device code to
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* the common handler
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*/
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struct v4l2_tvnorm {
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char *name;
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v4l2_std_id id;
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void *priv_data;
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};
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struct video_device
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{
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@ -104,9 +99,8 @@ struct video_device
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int debug; /* Activates debug level*/
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/* Video standard vars */
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int tvnormsize; /* Size of tvnorm array */
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v4l2_std_id current_norm; /* Current tvnorm */
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struct v4l2_tvnorm *tvnorms;
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v4l2_std_id tvnorms; /* Supported tv norms */
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v4l2_std_id current_norm; /* Current tvnorm */
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/* callbacks */
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void (*release)(struct video_device *vfd);
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@ -211,7 +205,7 @@ struct video_device
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/* Standard handling
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G_STD and ENUMSTD are handled by videodev.c
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*/
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int (*vidioc_s_std) (struct file *file, void *fh, v4l2_std_id a);
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int (*vidioc_s_std) (struct file *file, void *fh, v4l2_std_id *norm);
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int (*vidioc_querystd) (struct file *file, void *fh, v4l2_std_id *a);
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/* Input handling */
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