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-rw-r--r--v4l2-apps/test/Makefile7
-rw-r--r--v4l2-apps/test/v4l2grab.c162
-rw-r--r--v4l2-apps/util/v4l2-ctl.cpp41
3 files changed, 210 insertions, 0 deletions
diff --git a/v4l2-apps/test/Makefile b/v4l2-apps/test/Makefile
index d118b9210..13eebf377 100644
--- a/v4l2-apps/test/Makefile
+++ b/v4l2-apps/test/Makefile
@@ -7,6 +7,7 @@ binaries = ioctl-test \
sliced-vbi-detect \
vbi-test \
v4lgrab \
+ v4l2grab \
driver-test \
pixfmt-test \
stress-buffer \
@@ -24,9 +25,15 @@ install:
../libv4l2util/libv4l2util.a: ../libv4l2util/v4l2_driver.c ../libv4l2util/frequencies.c
make -C ../libv4l2util libv4l2util.a
+../libv4l/libv4l2/libv4l2.so:
+ make -C ../libv4l/
+
driver-test: driver-test.o ../libv4l2util/libv4l2util.a
pixfmt-test: pixfmt-test.o
$(CC) $(LDFLAGS) $^ $(LOADLIBES) $(LDLIBS) -o $@ -lX11
+v4l2grab: v4l2grab.o
+ $(CC) $(LDFLAGS) $^ -o $@ -L ../libv4l/libv4l2 -L ../libv4l/libv4lconvert -lv4l2 -lv4lconvert
+
include ../Make.rules
diff --git a/v4l2-apps/test/v4l2grab.c b/v4l2-apps/test/v4l2grab.c
new file mode 100644
index 000000000..153a0dd30
--- /dev/null
+++ b/v4l2-apps/test/v4l2grab.c
@@ -0,0 +1,162 @@
+/* V4L2 video picture grabber
+ Copyright (C) 2006 Mauro Carvalho Chehab <mchehab@infradead.org>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation version 2 of the License.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/mman.h>
+#include <linux/videodev2.h>
+#include "../libv4l/include/libv4l2.h"
+
+#define CLEAR(x) memset(&(x), 0, sizeof(x))
+
+struct buffer {
+ void *start;
+ size_t length;
+};
+
+static void xioctl(int fh, int request, void *arg)
+{
+ int r;
+
+ do {
+ r = v4l2_ioctl(fh, request, arg);
+ } while (r == -1 && ((errno == EINTR) || (errno == EAGAIN)));
+
+ if (r == -1) {
+ fprintf(stderr, "error %d, %s\n", errno, strerror(errno));
+ exit(EXIT_FAILURE);
+ }
+}
+
+int main(int argc, char **argv)
+{
+ struct v4l2_format fmt;
+ struct v4l2_buffer buf;
+ struct v4l2_requestbuffers req;
+ enum v4l2_buf_type type;
+ fd_set fds;
+ struct timeval tv;
+ int r, fd = -1;
+ unsigned int i, n_buffers;
+ char *dev_name = "/dev/video0";
+ char out_name[256];
+ FILE *fout;
+ struct buffer *buffers;
+
+ fd = v4l2_open(dev_name, O_RDWR | O_NONBLOCK, 0);
+ if (fd < 0) {
+ perror("Cannot open device");
+ exit(EXIT_FAILURE);
+ }
+
+ CLEAR(fmt);
+ fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ fmt.fmt.pix.width = 640;
+ fmt.fmt.pix.height = 480;
+ fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_RGB24;
+ fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
+ xioctl(fd, VIDIOC_S_FMT, &fmt);
+ if (fmt.fmt.pix.pixelformat != V4L2_PIX_FMT_RGB24) {
+ printf("Libv4l didn't accept RGB24 format. Can't proceed.\n");
+ exit(EXIT_FAILURE);
+ }
+ if ((fmt.fmt.pix.width != 640) || (fmt.fmt.pix.height != 480))
+ printf("Warning: driver is sending image at %dx%d\n",
+ fmt.fmt.pix.width, fmt.fmt.pix.height);
+
+ CLEAR(req);
+ req.count = 2;
+ req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ req.memory = V4L2_MEMORY_MMAP;
+ xioctl(fd, VIDIOC_REQBUFS, &req);
+
+ buffers = calloc(req.count, sizeof(*buffers));
+ for (n_buffers = 0; n_buffers < req.count; ++n_buffers) {
+ CLEAR(buf);
+
+ buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ buf.memory = V4L2_MEMORY_MMAP;
+ buf.index = n_buffers;
+
+ xioctl(fd, VIDIOC_QUERYBUF, &buf);
+
+ buffers[n_buffers].length = buf.length;
+ buffers[n_buffers].start = v4l2_mmap(NULL, buf.length,
+ PROT_READ | PROT_WRITE, MAP_SHARED,
+ fd, buf.m.offset);
+
+ if (MAP_FAILED == buffers[n_buffers].start) {
+ perror("mmap");
+ exit(EXIT_FAILURE);
+ }
+ }
+
+ for (i = 0; i < n_buffers; ++i) {
+ CLEAR(buf);
+ buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ buf.memory = V4L2_MEMORY_MMAP;
+ buf.index = i;
+ xioctl(fd, VIDIOC_QBUF, &buf);
+ }
+ type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+ xioctl(fd, VIDIOC_STREAMON, &type);
+ for (i = 0; i < 20; i++) {
+ do {
+ FD_ZERO(&fds);
+ FD_SET(fd, &fds);
+
+ /* Timeout. */
+ tv.tv_sec = 2;
+ tv.tv_usec = 0;
+
+ r = select(fd + 1, &fds, NULL, NULL, &tv);
+ } while ((r == -1 && (errno = EINTR)));
+ if (r == -1) {
+ perror("select");
+ return errno;
+ }
+
+ CLEAR(buf);
+ buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ buf.memory = V4L2_MEMORY_MMAP;
+ xioctl(fd, VIDIOC_DQBUF, &buf);
+
+ sprintf(out_name, "out%03d.ppm", i);
+ fout = fopen(out_name, "w");
+ if (!fout) {
+ perror("Cannot open image");
+ exit(EXIT_FAILURE);
+ }
+ fprintf(fout, "P6\n%d %d 255\n",
+ fmt.fmt.pix.width, fmt.fmt.pix.height);
+ fwrite(buffers[buf.index].start, buf.bytesused, 1, fout);
+ fclose(fout);
+
+ xioctl(fd, VIDIOC_QBUF, &buf);
+ }
+
+ type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ xioctl(fd, VIDIOC_STREAMOFF, &type);
+ for (i = 0; i < n_buffers; ++i)
+ v4l2_munmap(buffers[i].start, buffers[i].length);
+ v4l2_close(fd);
+
+ return 0;
+}
diff --git a/v4l2-apps/util/v4l2-ctl.cpp b/v4l2-apps/util/v4l2-ctl.cpp
index 309e14312..b2246c557 100644
--- a/v4l2-apps/util/v4l2-ctl.cpp
+++ b/v4l2-apps/util/v4l2-ctl.cpp
@@ -147,6 +147,7 @@ static unsigned capabilities;
typedef std::vector<struct v4l2_ext_control> ctrl_list;
static ctrl_list user_ctrls;
static ctrl_list mpeg_ctrls;
+static ctrl_list camera_ctrls;
typedef std::map<std::string, unsigned> ctrl_strmap;
static ctrl_strmap ctrl_str2id;
@@ -956,6 +957,8 @@ static std::string rxsubchans2s(int rxsubchans)
s += "lang1 ";
if (rxsubchans & V4L2_TUNER_SUB_LANG2)
s += "lang2 ";
+ if (rxsubchans & V4L2_TUNER_SUB_RDS)
+ s += "rds ";
return s;
}
@@ -990,6 +993,8 @@ static std::string tcap2s(unsigned cap)
s += "lang1 ";
if (cap & V4L2_TUNER_CAP_LANG2)
s += "lang2 ";
+ if (cap & V4L2_TUNER_CAP_RDS)
+ s += "rds ";
return s;
}
@@ -1015,8 +1020,12 @@ static std::string cap2s(unsigned cap)
s += "\t\tSliced VBI Output\n";
if (cap & V4L2_CAP_RDS_CAPTURE)
s += "\t\tRDS Capture\n";
+ if (cap & V4L2_CAP_RDS_OUTPUT)
+ s += "\t\tRDS Output\n";
if (cap & V4L2_CAP_TUNER)
s += "\t\tTuner\n";
+ if (cap & V4L2_CAP_MODULATOR)
+ s += "\t\tModulator\n";
if (cap & V4L2_CAP_AUDIO)
s += "\t\tAudio\n";
if (cap & V4L2_CAP_RADIO)
@@ -2183,6 +2192,8 @@ set_vid_fmt_error:
ctrl.value = strtol(iter->second.c_str(), NULL, 0);
if (V4L2_CTRL_ID2CLASS(ctrl.id) == V4L2_CTRL_CLASS_MPEG)
mpeg_ctrls.push_back(ctrl);
+ else if (V4L2_CTRL_ID2CLASS(ctrl.id) == V4L2_CTRL_CLASS_CAMERA)
+ camera_ctrls.push_back(ctrl);
else
user_ctrls.push_back(ctrl);
}
@@ -2213,6 +2224,22 @@ set_vid_fmt_error:
}
}
}
+ if (camera_ctrls.size()) {
+ ctrls.ctrl_class = V4L2_CTRL_CLASS_CAMERA;
+ ctrls.count = camera_ctrls.size();
+ ctrls.controls = &camera_ctrls[0];
+ if (doioctl(fd, VIDIOC_S_EXT_CTRLS, &ctrls, "VIDIOC_S_EXT_CTRLS")) {
+ if (ctrls.error_idx >= ctrls.count) {
+ fprintf(stderr, "Error setting CAMERA controls: %s\n",
+ strerror(errno));
+ }
+ else {
+ fprintf(stderr, "%s: %s\n",
+ ctrl_id2str[camera_ctrls[ctrls.error_idx].id].c_str(),
+ strerror(errno));
+ }
+ }
+ }
}
/* Get options */
@@ -2428,6 +2455,7 @@ set_vid_fmt_error:
struct v4l2_ext_controls ctrls = { 0 };
mpeg_ctrls.clear();
+ camera_ctrls.clear();
user_ctrls.clear();
for (ctrl_get_list::iterator iter = get_ctrls.begin();
iter != get_ctrls.end(); ++iter) {
@@ -2436,6 +2464,8 @@ set_vid_fmt_error:
ctrl.id = ctrl_str2id[*iter];
if (V4L2_CTRL_ID2CLASS(ctrl.id) == V4L2_CTRL_CLASS_MPEG)
mpeg_ctrls.push_back(ctrl);
+ else if (V4L2_CTRL_ID2CLASS(ctrl.id) == V4L2_CTRL_CLASS_CAMERA)
+ camera_ctrls.push_back(ctrl);
else
user_ctrls.push_back(ctrl);
}
@@ -2457,6 +2487,17 @@ set_vid_fmt_error:
printf("%s: %d\n", ctrl_id2str[ctrl.id].c_str(), ctrl.value);
}
}
+ if (camera_ctrls.size()) {
+ ctrls.ctrl_class = V4L2_CTRL_CLASS_CAMERA;
+ ctrls.count = camera_ctrls.size();
+ ctrls.controls = &camera_ctrls[0];
+ doioctl(fd, VIDIOC_G_EXT_CTRLS, &ctrls, "VIDIOC_G_EXT_CTRLS");
+ for (unsigned i = 0; i < camera_ctrls.size(); i++) {
+ struct v4l2_ext_control ctrl = camera_ctrls[i];
+
+ printf("%s: %d\n", ctrl_id2str[ctrl.id].c_str(), ctrl.value);
+ }
+ }
}
if (options[OptGetTuner]) {
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-05 21:11:58 +0000