V4L/DVB (13571): v4l: Adding Digital Video Timings APIs
This adds the above APIs to the v4l2 core. This is based on version v1.2
of the RFC titled "V4L - Support for video timings at the input/output interface"
Following new ioctls are added:-
- VIDIOC_ENUM_DV_PRESETS
- VIDIOC_S_DV_PRESET
- VIDIOC_G_DV_PRESET
- VIDIOC_QUERY_DV_PRESET
- VIDIOC_S_DV_TIMINGS
- VIDIOC_G_DV_TIMINGS
Please refer to the RFC for the details. This code was tested using vpfe
capture driver on TI's DM365. Following is the test configuration used :-
Blu-Ray HD DVD source -> TVP7002 -> DM365 (VPFE) ->DDR
A draft version of the TVP7002 driver (currently being reviewed in the mailing
list) was used that supports V4L2_DV_1080I60 & V4L2_DV_720P60 presets.
A loopback video capture application was used for testing these APIs. This calls
following IOCTLS :-
- verify the new v4l2_input capabilities flag added
- Enumerate available presets using VIDIOC_ENUM_DV_PRESETS
- Set one of the supported preset using VIDIOC_S_DV_PRESET
- Get current preset using VIDIOC_G_DV_PRESET
- Detect current preset using VIDIOC_QUERY_DV_PRESET
- Using stub functions in tvp7002, verify VIDIOC_S_DV_TIMINGS
and VIDIOC_G_DV_TIMINGS ioctls are received at the sub device.
- Tested on 64bit platform by Hans Verkuil
Signed-off-by: Muralidharan Karicheri <m-karicheri2@ti.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Reviewed-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Muralidharan Karicheri
Mauro Carvalho Chehab
parent
20d15a200d
commit
b6456c0cfe
5 changed files with 303 additions and 2 deletions
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@ -1077,6 +1077,12 @@ long v4l2_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg)
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case VIDIOC_DBG_G_REGISTER:
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case VIDIOC_DBG_G_CHIP_IDENT:
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case VIDIOC_S_HW_FREQ_SEEK:
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case VIDIOC_ENUM_DV_PRESETS:
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case VIDIOC_S_DV_PRESET:
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case VIDIOC_G_DV_PRESET:
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case VIDIOC_QUERY_DV_PRESET:
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case VIDIOC_S_DV_TIMINGS:
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case VIDIOC_G_DV_TIMINGS:
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ret = do_video_ioctl(file, cmd, arg);
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break;
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@ -284,6 +284,12 @@ static const char *v4l2_ioctls[] = {
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[_IOC_NR(VIDIOC_DBG_G_CHIP_IDENT)] = "VIDIOC_DBG_G_CHIP_IDENT",
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[_IOC_NR(VIDIOC_S_HW_FREQ_SEEK)] = "VIDIOC_S_HW_FREQ_SEEK",
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#endif
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[_IOC_NR(VIDIOC_ENUM_DV_PRESETS)] = "VIDIOC_ENUM_DV_PRESETS",
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[_IOC_NR(VIDIOC_S_DV_PRESET)] = "VIDIOC_S_DV_PRESET",
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[_IOC_NR(VIDIOC_G_DV_PRESET)] = "VIDIOC_G_DV_PRESET",
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[_IOC_NR(VIDIOC_QUERY_DV_PRESET)] = "VIDIOC_QUERY_DV_PRESET",
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[_IOC_NR(VIDIOC_S_DV_TIMINGS)] = "VIDIOC_S_DV_TIMINGS",
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[_IOC_NR(VIDIOC_G_DV_TIMINGS)] = "VIDIOC_G_DV_TIMINGS",
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};
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#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
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@ -1135,6 +1141,19 @@ static long __video_do_ioctl(struct file *file,
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{
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struct v4l2_input *p = arg;
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/*
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* We set the flags for CAP_PRESETS, CAP_CUSTOM_TIMINGS &
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* CAP_STD here based on ioctl handler provided by the
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* driver. If the driver doesn't support these
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* for a specific input, it must override these flags.
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*/
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if (ops->vidioc_s_std)
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p->capabilities |= V4L2_IN_CAP_STD;
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if (ops->vidioc_s_dv_preset)
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p->capabilities |= V4L2_IN_CAP_PRESETS;
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if (ops->vidioc_s_dv_timings)
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p->capabilities |= V4L2_IN_CAP_CUSTOM_TIMINGS;
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if (!ops->vidioc_enum_input)
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break;
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@ -1179,6 +1198,19 @@ static long __video_do_ioctl(struct file *file,
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if (!ops->vidioc_enum_output)
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break;
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/*
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* We set the flags for CAP_PRESETS, CAP_CUSTOM_TIMINGS &
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* CAP_STD here based on ioctl handler provided by the
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* driver. If the driver doesn't support these
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* for a specific output, it must override these flags.
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*/
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if (ops->vidioc_s_std)
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p->capabilities |= V4L2_OUT_CAP_STD;
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if (ops->vidioc_s_dv_preset)
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p->capabilities |= V4L2_OUT_CAP_PRESETS;
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if (ops->vidioc_s_dv_timings)
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p->capabilities |= V4L2_OUT_CAP_CUSTOM_TIMINGS;
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ret = ops->vidioc_enum_output(file, fh, p);
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if (!ret)
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dbgarg(cmd, "index=%d, name=%s, type=%d, "
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@ -1794,6 +1826,121 @@ static long __video_do_ioctl(struct file *file,
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}
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break;
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}
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case VIDIOC_ENUM_DV_PRESETS:
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{
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struct v4l2_dv_enum_preset *p = arg;
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if (!ops->vidioc_enum_dv_presets)
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break;
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ret = ops->vidioc_enum_dv_presets(file, fh, p);
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if (!ret)
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dbgarg(cmd,
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"index=%d, preset=%d, name=%s, width=%d,"
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" height=%d ",
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p->index, p->preset, p->name, p->width,
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p->height);
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break;
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}
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case VIDIOC_S_DV_PRESET:
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{
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struct v4l2_dv_preset *p = arg;
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if (!ops->vidioc_s_dv_preset)
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break;
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dbgarg(cmd, "preset=%d\n", p->preset);
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ret = ops->vidioc_s_dv_preset(file, fh, p);
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break;
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}
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case VIDIOC_G_DV_PRESET:
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{
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struct v4l2_dv_preset *p = arg;
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if (!ops->vidioc_g_dv_preset)
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break;
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ret = ops->vidioc_g_dv_preset(file, fh, p);
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if (!ret)
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dbgarg(cmd, "preset=%d\n", p->preset);
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break;
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}
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case VIDIOC_QUERY_DV_PRESET:
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{
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struct v4l2_dv_preset *p = arg;
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if (!ops->vidioc_query_dv_preset)
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break;
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ret = ops->vidioc_query_dv_preset(file, fh, p);
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if (!ret)
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dbgarg(cmd, "preset=%d\n", p->preset);
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break;
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}
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case VIDIOC_S_DV_TIMINGS:
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{
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struct v4l2_dv_timings *p = arg;
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if (!ops->vidioc_s_dv_timings)
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break;
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switch (p->type) {
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case V4L2_DV_BT_656_1120:
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dbgarg2("bt-656/1120:interlaced=%d, pixelclock=%lld,"
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" width=%d, height=%d, polarities=%x,"
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" hfrontporch=%d, hsync=%d, hbackporch=%d,"
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" vfrontporch=%d, vsync=%d, vbackporch=%d,"
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" il_vfrontporch=%d, il_vsync=%d,"
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" il_vbackporch=%d\n",
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p->bt.interlaced, p->bt.pixelclock,
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p->bt.width, p->bt.height, p->bt.polarities,
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p->bt.hfrontporch, p->bt.hsync,
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p->bt.hbackporch, p->bt.vfrontporch,
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p->bt.vsync, p->bt.vbackporch,
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p->bt.il_vfrontporch, p->bt.il_vsync,
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p->bt.il_vbackporch);
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ret = ops->vidioc_s_dv_timings(file, fh, p);
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break;
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default:
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dbgarg2("Unknown type %d!\n", p->type);
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break;
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}
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break;
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}
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case VIDIOC_G_DV_TIMINGS:
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{
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struct v4l2_dv_timings *p = arg;
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if (!ops->vidioc_g_dv_timings)
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break;
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ret = ops->vidioc_g_dv_timings(file, fh, p);
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if (!ret) {
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switch (p->type) {
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case V4L2_DV_BT_656_1120:
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dbgarg2("bt-656/1120:interlaced=%d,"
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" pixelclock=%lld,"
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" width=%d, height=%d, polarities=%x,"
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" hfrontporch=%d, hsync=%d,"
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" hbackporch=%d, vfrontporch=%d,"
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" vsync=%d, vbackporch=%d,"
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" il_vfrontporch=%d, il_vsync=%d,"
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" il_vbackporch=%d\n",
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p->bt.interlaced, p->bt.pixelclock,
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p->bt.width, p->bt.height,
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p->bt.polarities, p->bt.hfrontporch,
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p->bt.hsync, p->bt.hbackporch,
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p->bt.vfrontporch, p->bt.vsync,
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p->bt.vbackporch, p->bt.il_vfrontporch,
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p->bt.il_vsync, p->bt.il_vbackporch);
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break;
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default:
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dbgarg2("Unknown type %d!\n", p->type);
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break;
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}
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}
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break;
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}
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default:
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{
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@ -731,6 +731,99 @@ struct v4l2_standard {
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__u32 reserved[4];
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};
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/*
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* V I D E O T I M I N G S D V P R E S E T
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*/
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struct v4l2_dv_preset {
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__u32 preset;
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__u32 reserved[4];
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};
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/*
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* D V P R E S E T S E N U M E R A T I O N
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*/
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struct v4l2_dv_enum_preset {
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__u32 index;
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__u32 preset;
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__u8 name[32]; /* Name of the preset timing */
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__u32 width;
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__u32 height;
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__u32 reserved[4];
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};
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/*
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* D V P R E S E T V A L U E S
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*/
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#define V4L2_DV_INVALID 0
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#define V4L2_DV_480P59_94 1 /* BT.1362 */
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#define V4L2_DV_576P50 2 /* BT.1362 */
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#define V4L2_DV_720P24 3 /* SMPTE 296M */
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#define V4L2_DV_720P25 4 /* SMPTE 296M */
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#define V4L2_DV_720P30 5 /* SMPTE 296M */
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#define V4L2_DV_720P50 6 /* SMPTE 296M */
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#define V4L2_DV_720P59_94 7 /* SMPTE 274M */
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#define V4L2_DV_720P60 8 /* SMPTE 274M/296M */
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#define V4L2_DV_1080I29_97 9 /* BT.1120/ SMPTE 274M */
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#define V4L2_DV_1080I30 10 /* BT.1120/ SMPTE 274M */
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#define V4L2_DV_1080I25 11 /* BT.1120 */
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#define V4L2_DV_1080I50 12 /* SMPTE 296M */
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#define V4L2_DV_1080I60 13 /* SMPTE 296M */
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#define V4L2_DV_1080P24 14 /* SMPTE 296M */
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#define V4L2_DV_1080P25 15 /* SMPTE 296M */
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#define V4L2_DV_1080P30 16 /* SMPTE 296M */
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#define V4L2_DV_1080P50 17 /* BT.1120 */
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#define V4L2_DV_1080P60 18 /* BT.1120 */
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/*
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* D V B T T I M I N G S
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*/
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/* BT.656/BT.1120 timing data */
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struct v4l2_bt_timings {
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__u32 width; /* width in pixels */
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__u32 height; /* height in lines */
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__u32 interlaced; /* Interlaced or progressive */
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__u32 polarities; /* Positive or negative polarity */
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__u64 pixelclock; /* Pixel clock in HZ. Ex. 74.25MHz->74250000 */
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__u32 hfrontporch; /* Horizpontal front porch in pixels */
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__u32 hsync; /* Horizontal Sync length in pixels */
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__u32 hbackporch; /* Horizontal back porch in pixels */
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__u32 vfrontporch; /* Vertical front porch in pixels */
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__u32 vsync; /* Vertical Sync length in lines */
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__u32 vbackporch; /* Vertical back porch in lines */
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__u32 il_vfrontporch; /* Vertical front porch for bottom field of
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* interlaced field formats
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*/
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__u32 il_vsync; /* Vertical sync length for bottom field of
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* interlaced field formats
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*/
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__u32 il_vbackporch; /* Vertical back porch for bottom field of
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* interlaced field formats
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*/
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__u32 reserved[16];
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} __attribute__ ((packed));
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/* Interlaced or progressive format */
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#define V4L2_DV_PROGRESSIVE 0
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#define V4L2_DV_INTERLACED 1
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/* Polarities. If bit is not set, it is assumed to be negative polarity */
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#define V4L2_DV_VSYNC_POS_POL 0x00000001
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#define V4L2_DV_HSYNC_POS_POL 0x00000002
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/* DV timings */
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struct v4l2_dv_timings {
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__u32 type;
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union {
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struct v4l2_bt_timings bt;
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__u32 reserved[32];
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};
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} __attribute__ ((packed));
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/* Values for the type field */
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#define V4L2_DV_BT_656_1120 0 /* BT.656/1120 timing type */
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/*
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* V I D E O I N P U T S
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*/
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@ -742,7 +835,8 @@ struct v4l2_input {
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__u32 tuner; /* Associated tuner */
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v4l2_std_id std;
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__u32 status;
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__u32 reserved[4];
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__u32 capabilities;
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__u32 reserved[3];
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};
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/* Values for the 'type' field */
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@ -773,6 +867,11 @@ struct v4l2_input {
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#define V4L2_IN_ST_NO_ACCESS 0x02000000 /* Conditional access denied */
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#define V4L2_IN_ST_VTR 0x04000000 /* VTR time constant */
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/* capabilities flags */
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#define V4L2_IN_CAP_PRESETS 0x00000001 /* Supports S_DV_PRESET */
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#define V4L2_IN_CAP_CUSTOM_TIMINGS 0x00000002 /* Supports S_DV_TIMINGS */
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#define V4L2_IN_CAP_STD 0x00000004 /* Supports S_STD */
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/*
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* V I D E O O U T P U T S
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*/
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@ -783,13 +882,19 @@ struct v4l2_output {
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__u32 audioset; /* Associated audios (bitfield) */
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__u32 modulator; /* Associated modulator */
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v4l2_std_id std;
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__u32 reserved[4];
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__u32 capabilities;
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__u32 reserved[3];
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};
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/* Values for the 'type' field */
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#define V4L2_OUTPUT_TYPE_MODULATOR 1
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#define V4L2_OUTPUT_TYPE_ANALOG 2
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#define V4L2_OUTPUT_TYPE_ANALOGVGAOVERLAY 3
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/* capabilities flags */
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#define V4L2_OUT_CAP_PRESETS 0x00000001 /* Supports S_DV_PRESET */
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#define V4L2_OUT_CAP_CUSTOM_TIMINGS 0x00000002 /* Supports S_DV_TIMINGS */
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#define V4L2_OUT_CAP_STD 0x00000004 /* Supports S_STD */
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/*
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* C O N T R O L S
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*/
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@ -1624,6 +1729,13 @@ struct v4l2_dbg_chip_ident {
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#endif
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#define VIDIOC_S_HW_FREQ_SEEK _IOW('V', 82, struct v4l2_hw_freq_seek)
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#define VIDIOC_ENUM_DV_PRESETS _IOWR('V', 83, struct v4l2_dv_enum_preset)
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#define VIDIOC_S_DV_PRESET _IOWR('V', 84, struct v4l2_dv_preset)
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#define VIDIOC_G_DV_PRESET _IOWR('V', 85, struct v4l2_dv_preset)
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#define VIDIOC_QUERY_DV_PRESET _IOR('V', 86, struct v4l2_dv_preset)
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#define VIDIOC_S_DV_TIMINGS _IOWR('V', 87, struct v4l2_dv_timings)
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#define VIDIOC_G_DV_TIMINGS _IOWR('V', 88, struct v4l2_dv_timings)
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/* Reminder: when adding new ioctls please add support for them to
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drivers/media/video/v4l2-compat-ioctl32.c as well! */
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@ -239,6 +239,21 @@ struct v4l2_ioctl_ops {
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int (*vidioc_enum_frameintervals) (struct file *file, void *fh,
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struct v4l2_frmivalenum *fival);
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/* DV Timings IOCTLs */
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int (*vidioc_enum_dv_presets) (struct file *file, void *fh,
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struct v4l2_dv_enum_preset *preset);
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int (*vidioc_s_dv_preset) (struct file *file, void *fh,
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struct v4l2_dv_preset *preset);
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int (*vidioc_g_dv_preset) (struct file *file, void *fh,
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struct v4l2_dv_preset *preset);
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int (*vidioc_query_dv_preset) (struct file *file, void *fh,
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struct v4l2_dv_preset *qpreset);
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int (*vidioc_s_dv_timings) (struct file *file, void *fh,
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struct v4l2_dv_timings *timings);
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int (*vidioc_g_dv_timings) (struct file *file, void *fh,
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struct v4l2_dv_timings *timings);
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/* For other private ioctls */
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long (*vidioc_default) (struct file *file, void *fh,
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int cmd, void *arg);
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@ -217,6 +217,19 @@ struct v4l2_subdev_audio_ops {
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|
||||
s_routing: see s_routing in audio_ops, except this version is for video
|
||||
devices.
|
||||
|
||||
s_dv_preset: set dv (Digital Video) preset in the sub device. Similar to
|
||||
s_std()
|
||||
|
||||
query_dv_preset: query dv preset in the sub device. This is similar to
|
||||
querystd()
|
||||
|
||||
s_dv_timings(): Set custom dv timings in the sub device. This is used
|
||||
when sub device is capable of setting detailed timing information
|
||||
in the hardware to generate/detect the video signal.
|
||||
|
||||
g_dv_timings(): Get custom dv timings in the sub device.
|
||||
|
||||
*/
|
||||
struct v4l2_subdev_video_ops {
|
||||
int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config);
|
||||
|
|
@ -240,6 +253,14 @@ struct v4l2_subdev_video_ops {
|
|||
int (*s_parm)(struct v4l2_subdev *sd, struct v4l2_streamparm *param);
|
||||
int (*enum_framesizes)(struct v4l2_subdev *sd, struct v4l2_frmsizeenum *fsize);
|
||||
int (*enum_frameintervals)(struct v4l2_subdev *sd, struct v4l2_frmivalenum *fival);
|
||||
int (*s_dv_preset)(struct v4l2_subdev *sd,
|
||||
struct v4l2_dv_preset *preset);
|
||||
int (*query_dv_preset)(struct v4l2_subdev *sd,
|
||||
struct v4l2_dv_preset *preset);
|
||||
int (*s_dv_timings)(struct v4l2_subdev *sd,
|
||||
struct v4l2_dv_timings *timings);
|
||||
int (*g_dv_timings)(struct v4l2_subdev *sd,
|
||||
struct v4l2_dv_timings *timings);
|
||||
};
|
||||
|
||||
/*
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue