void stds_get(int fd)
{
if (options[OptGetStandard]) {
if (doioctl(fd, VIDIOC_G_STD, &standard) == 0) {
printf("Video Standard = 0x%08llx\n", (unsigned long long)standard);
print_v4lstd((unsigned long long)standard);
}
}
if (options[OptGetDvTimings]) {
if (doioctl(fd, VIDIOC_G_DV_TIMINGS, &dv_timings) >= 0) {
printf("DV timings:\n");
print_dv_timings(&dv_timings);
}
}
if (options[OptGetDvTimingsCap]) {
struct v4l2_dv_timings_cap dv_timings_cap;
if (doioctl(fd, VIDIOC_DV_TIMINGS_CAP, &dv_timings_cap) >= 0) {
static const flag_def dv_caps_def[] = {
{ V4L2_DV_BT_CAP_INTERLACED, "Interlaced" },
{ V4L2_DV_BT_CAP_PROGRESSIVE, "Progressive" },
{ V4L2_DV_BT_CAP_REDUCED_BLANKING, "Reduced Blanking" },
{ V4L2_DV_BT_CAP_CUSTOM, "Custom Formats" },
{ 0, NULL }
};
struct v4l2_bt_timings_cap *bt = &dv_timings_cap.bt;
printf("DV timings capabilities:\n");
if (dv_timings_cap.type != V4L2_DV_BT_656_1120)
printf("\tUnknown type\n");
else {
printf("\tMinimum Width: %u\n", bt->min_width);
printf("\tMaximum Width: %u\n", bt->max_width);
printf("\tMinimum Height: %u\n", bt->min_height);
printf("\tMaximum Height: %u\n", bt->max_height);
printf("\tMinimum PClock: %llu\n", bt->min_pixelclock);
printf("\tMaximum PClock: %llu\n", bt->max_pixelclock);
printf("\tStandards: %s\n",
flags2s(bt->standards, dv_standards_def).c_str());
printf("\tCapabilities: %s\n",
flags2s(bt->capabilities, dv_caps_def).c_str());
}
}
}
if (options[OptQueryStandard]) {
if (doioctl(fd, VIDIOC_QUERYSTD, &standard) == 0) {
printf("Video Standard = 0x%08llx\n", (unsigned long long)standard);
print_v4lstd((unsigned long long)standard);
}
}
if (options[OptQueryDvTimings]) {
doioctl(fd, VIDIOC_QUERY_DV_TIMINGS, &dv_timings);
print_dv_timings(&dv_timings);
}
}
static void print_qctrl(int fd, struct v4l2_queryctrl *queryctrl,
struct v4l2_ext_control *ctrl, int show_menus)
{
struct v4l2_querymenu qmenu = { 0 };
std::string s = name2var(queryctrl->name);
int i;
qmenu.id = queryctrl->id;
switch (queryctrl->type) {
case V4L2_CTRL_TYPE_INTEGER:
printf("%31s (int) : min=%d max=%d step=%d default=%d value=%d",
s.c_str(),
queryctrl->minimum, queryctrl->maximum,
queryctrl->step, queryctrl->default_value,
ctrl->value);
break;
case V4L2_CTRL_TYPE_INTEGER64:
printf("%31s (int64): value=%lld", s.c_str(), ctrl->value64);
break;
case V4L2_CTRL_TYPE_BOOLEAN:
printf("%31s (bool) : default=%d value=%d",
s.c_str(),
queryctrl->default_value, ctrl->value);
break;
case V4L2_CTRL_TYPE_MENU:
printf("%31s (menu) : min=%d max=%d default=%d value=%d",
s.c_str(),
queryctrl->minimum, queryctrl->maximum,
queryctrl->default_value, ctrl->value);
break;
case V4L2_CTRL_TYPE_BUTTON:
printf("%31s (button)\n", s.c_str());
break;
default: break;
}
if (queryctrl->flags) {
const flag_def def[] = {
{ V4L2_CTRL_FLAG_GRABBED, "grabbed" },
{ V4L2_CTRL_FLAG_READ_ONLY, "read-only" },
{ V4L2_CTRL_FLAG_UPDATE, "update" },
{ V4L2_CTRL_FLAG_INACTIVE, "inactive" },
{ V4L2_CTRL_FLAG_SLIDER, "slider" },
{ 0, NULL }
};
printf(" flags=%s", flags2s(queryctrl->flags, def).c_str());
}
printf("\n");
if (queryctrl->type == V4L2_CTRL_TYPE_MENU && show_menus) {
for (i = 0; i <= queryctrl->maximum; i++) {
qmenu.index = i;
if (ioctl(fd, VIDIOC_QUERYMENU, &qmenu))
continue;
printf("\t\t\t\t%d: %s\n", i, qmenu.name);
}
}
}
static void print_buffer(FILE *f, struct v4l2_buffer &buf)
{
fprintf(f, "\tIndex : %d\n", buf.index);
fprintf(f, "\tType : %s\n", buftype2s(buf.type).c_str());
fprintf(f, "\tFlags : %s\n", flags2s(buf.flags, flags_def).c_str());
fprintf(f, "\tField : %s\n", field2s(buf.field).c_str());
fprintf(f, "\tSequence : %u\n", buf.sequence);
fprintf(f, "\tLength : %u\n", buf.length);
fprintf(f, "\tBytesused: %u\n", buf.bytesused);
fprintf(f, "\tTimestamp: %lu.%06lus (%s)\n", buf.timestamp.tv_sec, buf.timestamp.tv_usec,
timestamp_type2s(buf.flags).c_str());
if (buf.flags & V4L2_BUF_FLAG_TIMECODE) {
static const int fps_types[] = { 0, 24, 25, 30, 50, 60 };
int fps = buf.timecode.type;
if (fps > 5)
fps = 0;
fprintf(f, "\tTimecode : %dfps %s %dh %dm %ds %df (0x%02x 0x%02x 0x%02x 0x%02x)\n",
fps_types[fps],
flags2s(buf.timecode.flags, tc_flags_def).c_str(),
buf.timecode.hours, buf.timecode.minutes,
buf.timecode.seconds, buf.timecode.frames,
buf.timecode.userbits[0], buf.timecode.userbits[1],
buf.timecode.userbits[2], buf.timecode.userbits[3]);
}
if (buf.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ||
buf.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
for (unsigned i = 0; i < buf.length; i++) {
struct v4l2_plane *p = buf.m.planes + i;
fprintf(f, "\tPlane : %d\n", i);
fprintf(f, "\t\tLength : %u\n", p->length);
fprintf(f, "\t\tBytesused : %u\n", p->bytesused);
fprintf(f, "\t\tData Offset: %u\n", p->data_offset);
}
}
fprintf(f, "\n");
}
static std::string ctrlflags2s(__u32 flags)
{
static const flag_def def[] = {
{ V4L2_CTRL_FLAG_GRABBED, "grabbed" },
{ V4L2_CTRL_FLAG_DISABLED, "disabled" },
{ V4L2_CTRL_FLAG_READ_ONLY, "read-only" },
{ V4L2_CTRL_FLAG_UPDATE, "update" },
{ V4L2_CTRL_FLAG_INACTIVE, "inactive" },
{ V4L2_CTRL_FLAG_SLIDER, "slider" },
{ V4L2_CTRL_FLAG_WRITE_ONLY, "write-only" },
{ V4L2_CTRL_FLAG_VOLATILE, "volatile" },
{ 0, NULL }
};
return flags2s(flags, def);
}
std::string fmtdesc2s(unsigned flags)
{
return flags2s(flags, fmtdesc_def);
}
void printfmt(const struct v4l2_format &vfmt)
{
const flag_def vbi_def[] = {
{ V4L2_VBI_UNSYNC, "unsynchronized" },
{ V4L2_VBI_INTERLACED, "interlaced" },
{ 0, NULL }
};
printf("Format %s:\n", buftype2s(vfmt.type).c_str());
switch (vfmt.type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
printf("\tWidth/Height : %u/%u\n", vfmt.fmt.pix.width, vfmt.fmt.pix.height);
printf("\tPixel Format : '%s'\n", fcc2s(vfmt.fmt.pix.pixelformat).c_str());
printf("\tField : %s\n", field2s(vfmt.fmt.pix.field).c_str());
printf("\tBytes per Line : %u\n", vfmt.fmt.pix.bytesperline);
printf("\tSize Image : %u\n", vfmt.fmt.pix.sizeimage);
printf("\tColorspace : %s\n", colorspace2s(vfmt.fmt.pix.colorspace).c_str());
printf("\tTransfer Function : %s\n", xfer_func2s(vfmt.fmt.pix.xfer_func).c_str());
printf("\tYCbCr Encoding : %s\n", ycbcr_enc2s(vfmt.fmt.pix.ycbcr_enc).c_str());
printf("\tQuantization : %s\n", quantization2s(vfmt.fmt.pix.quantization).c_str());
if (vfmt.fmt.pix.priv == V4L2_PIX_FMT_PRIV_MAGIC)
printf("\tFlags : %s\n", pixflags2s(vfmt.fmt.pix.flags).c_str());
break;
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
printf("\tWidth/Height : %u/%u\n", vfmt.fmt.pix_mp.width, vfmt.fmt.pix_mp.height);
printf("\tPixel Format : '%s'\n", fcc2s(vfmt.fmt.pix_mp.pixelformat).c_str());
printf("\tField : %s\n", field2s(vfmt.fmt.pix_mp.field).c_str());
printf("\tNumber of planes : %u\n", vfmt.fmt.pix_mp.num_planes);
printf("\tFlags : %s\n", pixflags2s(vfmt.fmt.pix_mp.flags).c_str());
printf("\tColorspace : %s\n", colorspace2s(vfmt.fmt.pix_mp.colorspace).c_str());
printf("\tTransfer Function : %s\n", xfer_func2s(vfmt.fmt.pix_mp.xfer_func).c_str());
printf("\tYCbCr Encoding : %s\n", ycbcr_enc2s(vfmt.fmt.pix_mp.ycbcr_enc).c_str());
printf("\tQuantization : %s\n", quantization2s(vfmt.fmt.pix_mp.quantization).c_str());
for (int i = 0; i < vfmt.fmt.pix_mp.num_planes && i < VIDEO_MAX_PLANES; i++) {
printf("\tPlane %d :\n", i);
printf("\t Bytes per Line : %u\n", vfmt.fmt.pix_mp.plane_fmt[i].bytesperline);
printf("\t Size Image : %u\n", vfmt.fmt.pix_mp.plane_fmt[i].sizeimage);
}
break;
case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
printf("\tLeft/Top : %d/%d\n",
vfmt.fmt.win.w.left, vfmt.fmt.win.w.top);
printf("\tWidth/Height: %d/%d\n",
vfmt.fmt.win.w.width, vfmt.fmt.win.w.height);
printf("\tField : %s\n", field2s(vfmt.fmt.win.field).c_str());
printf("\tChroma Key : 0x%08x\n", vfmt.fmt.win.chromakey);
printf("\tGlobal Alpha: 0x%02x\n", vfmt.fmt.win.global_alpha);
printf("\tClip Count : %u\n", vfmt.fmt.win.clipcount);
if (vfmt.fmt.win.clips)
for (unsigned i = 0; i < vfmt.fmt.win.clipcount; i++) {
struct v4l2_rect &r = vfmt.fmt.win.clips[i].c;
printf("\t\tClip %2d: %ux%u@%ux%u\n", i,
r.width, r.height, r.left, r.top);
}
printf("\tClip Bitmap : %s", vfmt.fmt.win.bitmap ? "Yes, " : "No\n");
if (vfmt.fmt.win.bitmap) {
unsigned char *bitmap = (unsigned char *)vfmt.fmt.win.bitmap;
unsigned stride = (vfmt.fmt.win.w.width + 7) / 8;
unsigned cnt = 0;
for (unsigned y = 0; y < vfmt.fmt.win.w.height; y++)
for (unsigned x = 0; x < vfmt.fmt.win.w.width; x++)
if (bitmap[y * stride + x / 8] & (1 << (x & 7)))
cnt++;
printf("%u bits of %u are set\n", cnt,
vfmt.fmt.win.w.width * vfmt.fmt.win.w.height);
}
break;
case V4L2_BUF_TYPE_VBI_CAPTURE:
case V4L2_BUF_TYPE_VBI_OUTPUT:
printf("\tSampling Rate : %u Hz\n", vfmt.fmt.vbi.sampling_rate);
printf("\tOffset : %u samples (%g secs after leading edge)\n",
vfmt.fmt.vbi.offset,
(double)vfmt.fmt.vbi.offset / (double)vfmt.fmt.vbi.sampling_rate);
printf("\tSamples per Line: %u\n", vfmt.fmt.vbi.samples_per_line);
printf("\tSample Format : %s\n", fcc2s(vfmt.fmt.vbi.sample_format).c_str());
printf("\tStart 1st Field : %u\n", vfmt.fmt.vbi.start[0]);
printf("\tCount 1st Field : %u\n", vfmt.fmt.vbi.count[0]);
printf("\tStart 2nd Field : %u\n", vfmt.fmt.vbi.start[1]);
printf("\tCount 2nd Field : %u\n", vfmt.fmt.vbi.count[1]);
if (vfmt.fmt.vbi.flags)
printf("\tFlags : %s\n", flags2s(vfmt.fmt.vbi.flags, vbi_def).c_str());
break;
case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
printf("\tService Set : %s\n",
service2s(vfmt.fmt.sliced.service_set).c_str());
for (int i = 0; i < 24; i++) {
printf("\tService Line %2d: %8s / %-8s\n", i,
service2s(vfmt.fmt.sliced.service_lines[0][i]).c_str(),
service2s(vfmt.fmt.sliced.service_lines[1][i]).c_str());
}
printf("\tI/O Size : %u\n", vfmt.fmt.sliced.io_size);
break;
case V4L2_BUF_TYPE_SDR_CAPTURE:
case V4L2_BUF_TYPE_SDR_OUTPUT:
printf("\tSample Format : %s\n", fcc2s(vfmt.fmt.sdr.pixelformat).c_str());
printf("\tBuffer Size : %u\n", vfmt.fmt.sdr.buffersize);
break;
}
}
std::string service2s(unsigned service)
{
return flags2s(service, service_def);
}
std::string pixflags2s(unsigned flags)
{
return flags2s(flags, pixflags_def);
}
static void print_dv_timings(const struct v4l2_dv_timings *t)
{
const struct v4l2_bt_timings *bt;
double tot_width, tot_height;
switch (t->type) {
case V4L2_DV_BT_656_1120:
bt = &t->bt;
tot_height = bt->height +
bt->vfrontporch + bt->vsync + bt->vbackporch +
bt->il_vfrontporch + bt->il_vsync + bt->il_vbackporch;
tot_width = bt->width +
bt->hfrontporch + bt->hsync + bt->hbackporch;
if (options[OptConcise]) {
printf("\t%dx%d%c%.2f %s\n", bt->width, bt->height,
bt->interlaced ? 'i' : 'p',
(double)bt->pixelclock /
(tot_width * (tot_height / (bt->interlaced ? 2 : 1))),
flags2s(bt->flags, dv_flags_def).c_str());
break;
}
printf("\tActive width: %d\n", bt->width);
printf("\tActive height: %d\n", bt->height);
printf("\tTotal width: %d\n",bt->width +
bt->hfrontporch + bt->hsync + bt->hbackporch);
printf("\tTotal height: %d\n", bt->height +
bt->vfrontporch + bt->vsync + bt->vbackporch +
bt->il_vfrontporch + bt->il_vsync + bt->il_vbackporch);
printf("\tFrame format: %s\n", bt->interlaced ? "interlaced" : "progressive");
printf("\tPolarities: %cvsync %chsync\n",
(bt->polarities & V4L2_DV_VSYNC_POS_POL) ? '+' : '-',
(bt->polarities & V4L2_DV_HSYNC_POS_POL) ? '+' : '-');
printf("\tPixelclock: %lld Hz", bt->pixelclock);
if (bt->width && bt->height) {
if (bt->interlaced)
printf(" (%.2f fields per second)", (double)bt->pixelclock /
(tot_width * (tot_height / 2)));
else
printf(" (%.2f frames per second)", (double)bt->pixelclock /
(tot_width * tot_height));
}
printf("\n");
printf("\tHorizontal frontporch: %d\n", bt->hfrontporch);
printf("\tHorizontal sync: %d\n", bt->hsync);
printf("\tHorizontal backporch: %d\n", bt->hbackporch);
if (bt->interlaced)
printf("\tField 1:\n");
printf("\tVertical frontporch: %d\n", bt->vfrontporch);
printf("\tVertical sync: %d\n", bt->vsync);
printf("\tVertical backporch: %d\n", bt->vbackporch);
if (bt->interlaced) {
printf("\tField 2:\n");
printf("\tVertical frontporch: %d\n", bt->il_vfrontporch);
printf("\tVertical sync: %d\n", bt->il_vsync);
printf("\tVertical backporch: %d\n", bt->il_vbackporch);
}
printf("\tStandards: %s\n", flags2s(bt->standards, dv_standards_def).c_str());
printf("\tFlags: %s\n", flags2s(bt->flags, dv_flags_def).c_str());
break;
default:
printf("Timing type not defined\n");
break;
}
}
static std::string output_cap2s(__u32 capabilities)
{
return capabilities ? flags2s(capabilities, output_cap_def) : "not defined";
}
static std::string status2s(__u32 status)
{
return status ? flags2s(status, in_status_def) : "ok";
}