This patch breaks down the streaming_set() into smaller
ones, which can be resued for supporting m2m devices.
Further cleanup or consolidation can be applied with
separate patches, since this one tries not to modify
logics.
---
utils/v4l2-ctl/v4l2-ctl-streaming.cpp | 888 ++++++++++++++++++----------------
1 file changed, 480 insertions(+), 408 deletions(-)
diff --git a/utils/v4l2-ctl/v4l2-ctl-streaming.cpp b/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
index c29565f..f8e782d 100644
--- a/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
+++ b/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
@@ -27,7 +27,8 @@ static unsigned stream_skip;
static unsigned stream_pat;
static bool stream_loop;
static unsigned reqbufs_count = 3;
-static char *file;
+static char *file_cap;
+static char *file_out;
#define NUM_PATTERNS (4)
@@ -198,12 +199,12 @@ void streaming_cmd(int ch, char *optarg)
stream_pat %= NUM_PATTERNS;
break;
case OptStreamTo:
- file = optarg;
- if (!strcmp(file, "-"))
+ file_cap = optarg;
+ if (!strcmp(file_cap, "-"))
options[OptSilent] = true;
break;
case OptStreamFrom:
- file = optarg;
+ file_out = optarg;
break;
case OptStreamMmap:
case OptStreamUser:
@@ -526,475 +527,546 @@ static bool fill_buffer_from_file(void *buffers[], unsigned buffer_lengths[],
return true;
}
-void streaming_set(int fd)
+static void do_setup_cap_buffers(int fd, struct v4l2_requestbuffers *reqbufs,
+ bool is_mplane, unsigned num_planes, bool is_mmap,
+ void *buffers[], unsigned buffer_lengths[])
{
- if (options[OptStreamMmap] || options[OptStreamUser]) {
- struct v4l2_requestbuffers reqbufs;
- struct v4l2_event_subscription sub;
- int fd_flags = fcntl(fd, F_GETFL);
- bool is_mplane = capabilities &
- (V4L2_CAP_VIDEO_CAPTURE_MPLANE |
- V4L2_CAP_VIDEO_M2M_MPLANE);
- bool is_mmap = options[OptStreamMmap];
- bool use_poll = options[OptStreamPoll];
- __u32 type = is_mplane ?
- V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE : V4L2_BUF_TYPE_VIDEO_CAPTURE;
- FILE *fout = NULL;
- unsigned num_planes = 1;
-
- memset(&reqbufs, 0, sizeof(reqbufs));
- reqbufs.count = reqbufs_count;
- reqbufs.type = type;
- reqbufs.memory = is_mmap ? V4L2_MEMORY_MMAP : V4L2_MEMORY_USERPTR;
- memset(&sub, 0, sizeof(sub));
- sub.type = V4L2_EVENT_EOS;
- ioctl(fd, VIDIOC_SUBSCRIBE_EVENT, &sub);
-
- if (file) {
- if (!strcmp(file, "-"))
- fout = stdout;
- else
- fout = fopen(file, "w+");
- }
+ for (unsigned i = 0; i < reqbufs->count; i++) {
+ struct v4l2_plane planes[VIDEO_MAX_PLANES];
+ struct v4l2_buffer buf;
- if (doioctl(fd, VIDIOC_REQBUFS, &reqbufs))
+ memset(&buf, 0, sizeof(buf));
+ memset(planes, 0, sizeof(planes));
+ buf.type = reqbufs->type;
+ buf.memory = reqbufs->memory;
+ buf.index = i;
+ if (is_mplane) {
+ buf.m.planes = planes;
+ buf.length = VIDEO_MAX_PLANES;
+ }
+ if (doioctl(fd, VIDIOC_QUERYBUF, &buf))
return;
- void *buffers[reqbufs.count * VIDEO_MAX_PLANES];
- unsigned buffer_lengths[reqbufs.count * VIDEO_MAX_PLANES];
-
- for (unsigned i = 0; i < reqbufs.count; i++) {
- struct v4l2_plane planes[VIDEO_MAX_PLANES];
- struct v4l2_buffer buf;
-
- memset(&buf, 0, sizeof(buf));
- memset(planes, 0, sizeof(planes));
- buf.type = reqbufs.type;
- buf.memory = reqbufs.memory;
- buf.index = i;
- if (is_mplane) {
- buf.m.planes = planes;
- buf.length = VIDEO_MAX_PLANES;
- }
- if (doioctl(fd, VIDIOC_QUERYBUF, &buf))
- return;
+ if (is_mplane) {
+ num_planes = buf.length;
+ for (unsigned j = 0; j < num_planes; j++) {
+ unsigned p = i * num_planes + j;
- if (is_mplane) {
- num_planes = buf.length;
- for (unsigned j = 0; j < num_planes; j++) {
- unsigned p = i * num_planes + j;
-
- buffer_lengths[p] = planes[j].length;
- if (is_mmap) {
- buffers[p] = mmap(NULL, planes[j].length,
- PROT_READ | PROT_WRITE, MAP_SHARED,
- fd, planes[j].m.mem_offset);
-
- if (buffers[p] == MAP_FAILED) {
- fprintf(stderr, "mmap failed\n");
- return;
- }
- } else {
- buffers[p] = calloc(1, planes[j].length);
- planes[j].m.userptr = (unsigned long)buffers[p];
- }
- }
- } else {
- buffer_lengths[i] = buf.length;
+ buffer_lengths[p] = planes[j].length;
if (is_mmap) {
- buffers[i] = mmap(NULL, buf.length,
- PROT_READ | PROT_WRITE, MAP_SHARED, fd, buf.m.offset);
+ buffers[p] = mmap(NULL, planes[j].length,
+ PROT_READ | PROT_WRITE, MAP_SHARED,
+ fd, planes[j].m.mem_offset);
- if (buffers[i] == MAP_FAILED) {
+ if (buffers[p] == MAP_FAILED) {
fprintf(stderr, "mmap failed\n");
return;
}
- } else {
- buffers[i] = calloc(1, buf.length);
- buf.m.userptr = (unsigned long)buffers[i];
+ }
+ else {
+ buffers[p] = calloc(1, planes[j].length);
+ planes[j].m.userptr = (unsigned long)buffers[p];
}
}
- if (doioctl(fd, VIDIOC_QBUF, &buf))
- return;
}
-
- type = reqbufs.type;
- if (doioctl(fd, VIDIOC_STREAMON, &type))
- return;
-
- if (use_poll)
- fcntl(fd, F_SETFL, fd_flags | O_NONBLOCK);
-
- unsigned count = 0, last = 0;
- struct timeval tv_last;
- bool eos = false;
-
- while (!eos) {
- struct v4l2_plane planes[VIDEO_MAX_PLANES];
- struct v4l2_buffer buf;
- fd_set read_fds;
- fd_set exception_fds;
- char ch = '.';
- int ret;
-
- if (use_poll) {
- struct timeval tv;
- int r;
-
- FD_ZERO(&read_fds);
- FD_SET(fd, &read_fds);
- FD_ZERO(&exception_fds);
- FD_SET(fd, &exception_fds);
-
- /* Timeout. */
- tv.tv_sec = 2;
- tv.tv_usec = 0;
-
- r = select(fd + 1, &read_fds, NULL, &exception_fds, &tv);
-
- if (r == -1) {
- if (EINTR == errno)
- continue;
- fprintf(stderr, "select error: %s\n",
- strerror(errno));
- return;
- }
-
- if (r == 0) {
- fprintf(stderr, "select timeout\n");
+ else {
+ buffer_lengths[i] = buf.length;
+ if (is_mmap) {
+ buffers[i] = mmap(NULL, buf.length,
+ PROT_READ | PROT_WRITE, MAP_SHARED, fd, buf.m.offset);
+
+ if (buffers[i] == MAP_FAILED) {
+ fprintf(stderr, "mmap failed\n");
return;
}
}
+ else {
+ buffers[i] = calloc(1, buf.length);
+ buf.m.userptr = (unsigned long)buffers[i];
+ }
+ }
+ if (doioctl(fd, VIDIOC_QBUF, &buf))
+ return;
+ }
+}
- if (FD_ISSET(fd, &exception_fds)) {
- struct v4l2_event ev;
+static void do_setup_out_buffers(int fd, struct v4l2_requestbuffers *reqbufs,
+ bool is_mplane, unsigned num_planes, bool is_mmap,
+ void *buffers[], unsigned buffer_lengths[], FILE *fin)
+{
+ struct v4l2_format fmt;
+ memset(&fmt, 0, sizeof(fmt));
+ fmt.type = reqbufs->type;
+ doioctl(fd, VIDIOC_G_FMT, &fmt);
+
+ if (!precalculate_bars(fmt.fmt.pix.pixelformat, stream_pat % NUM_PATTERNS)) {
+ fprintf(stderr, "unsupported pixelformat\n");
+ return;
+ }
- while (!ioctl(fd, VIDIOC_DQEVENT, &ev)) {
- if (ev.type != V4L2_EVENT_EOS)
- continue;
- eos = true;
- break;
- }
- }
- if (!FD_ISSET(fd, &read_fds))
- continue;
+ for (unsigned i = 0; i < reqbufs->count; i++) {
+ struct v4l2_plane planes[VIDEO_MAX_PLANES];
+ struct v4l2_buffer buf;
- memset(&buf, 0, sizeof(buf));
- memset(planes, 0, sizeof(planes));
- buf.type = reqbufs.type;
- buf.memory = reqbufs.memory;
- if (is_mplane) {
- buf.m.planes = planes;
- buf.length = VIDEO_MAX_PLANES;
- }
+ memset(&buf, 0, sizeof(buf));
+ memset(planes, 0, sizeof(planes));
+ buf.type = reqbufs->type;
+ buf.memory = reqbufs->memory;
+ buf.index = i;
+ if (is_mplane) {
+ buf.m.planes = planes;
+ buf.length = VIDEO_MAX_PLANES;
+ }
+ if (doioctl(fd, VIDIOC_QUERYBUF, &buf))
+ return;
- ret = test_ioctl(fd, VIDIOC_DQBUF, &buf);
- if (ret < 0 && errno == EAGAIN)
- continue;
- if (ret < 0) {
- fprintf(stderr, "%s: failed: %s\n", "VIDIOC_DQBUF", strerror(errno));
- return;
- }
- if (fout && !stream_skip) {
- for (unsigned j = 0; j < num_planes; j++) {
- unsigned p = buf.index * num_planes + j;
- unsigned used = is_mplane ? planes[j].bytesused : buf.bytesused;
- unsigned offset = is_mplane ? planes[j].data_offset : 0;
- unsigned sz;
-
- if (offset > used) {
- // Should never happen
- fprintf(stderr, "offset %d > used %d!\n",
- offset, used);
- offset = 0;
- }
- used -= offset;
- sz = fwrite((char *)buffers[p] + offset, 1, used, fout);
+ if (is_mplane) {
+ num_planes = buf.length;
+ for (unsigned j = 0; j < num_planes; j++) {
+ unsigned p = i * num_planes + j;
- if (sz != used)
- fprintf(stderr, "%u != %u\n", sz, used);
- }
- }
- if (buf.flags & V4L2_BUF_FLAG_KEYFRAME)
- ch = 'K';
- else if (buf.flags & V4L2_BUF_FLAG_PFRAME)
- ch = 'P';
- else if (buf.flags & V4L2_BUF_FLAG_BFRAME)
- ch = 'B';
- if (verbose)
- print_buffer(stderr, buf);
- if (test_ioctl(fd, VIDIOC_QBUF, &buf))
- return;
+ buffer_lengths[p] = planes[j].length;
+ buf.m.planes[j].bytesused = planes[j].length;
+ if (is_mmap) {
+ buffers[p] = mmap(NULL, planes[j].length,
+ PROT_READ | PROT_WRITE, MAP_SHARED,
+ fd, planes[j].m.mem_offset);
- if (!verbose) {
- fprintf(stderr, "%c", ch);
- fflush(stderr);
+ if (buffers[p] == MAP_FAILED) {
+ fprintf(stderr, "mmap failed\n");
+ return;
+ }
+ }
+ else {
+ buffers[p] = calloc(1, planes[j].length);
+ planes[j].m.userptr = (unsigned long)buffers[p];
+ }
}
-
- if (count == 0) {
- gettimeofday(&tv_last, NULL);
- } else {
- struct timeval tv_cur, res;
-
- gettimeofday(&tv_cur, NULL);
- timersub(&tv_cur, &tv_last, &res);
- if (res.tv_sec) {
- unsigned fps = (100 * (count - last)) /
- (res.tv_sec * 100 + res.tv_usec / 10000);
- last = count;
- tv_last = tv_cur;
- fprintf(stderr, " %d fps\n", fps);
+ // TODO fill_buffer_mp(buffers[i], &fmt.fmt.pix_mp);
+ if (fin)
+ fill_buffer_from_file(buffers, buffer_lengths,
+ buf.index, num_planes, fin);
+ }
+ else {
+ buffer_lengths[i] = buf.length;
+ buf.bytesused = buf.length;
+ if (is_mmap) {
+ buffers[i] = mmap(NULL, buf.length,
+ PROT_READ | PROT_WRITE, MAP_SHARED, fd, buf.m.offset);
+
+ if (buffers[i] == MAP_FAILED) {
+ fprintf(stderr, "mmap failed\n");
+ return;
}
}
- count++;
- if (stream_skip) {
- stream_skip--;
- continue;
+ else {
+ buffers[i] = calloc(1, buf.length);
+ buf.m.userptr = (unsigned long)buffers[i];
}
- if (stream_count == 0)
- continue;
- if (--stream_count == 0)
- break;
+ if (!fin || !fill_buffer_from_file(buffers, buffer_lengths,
+ buf.index, num_planes, fin))
+ fill_buffer(buffers[i], &fmt.fmt.pix);
}
- doioctl(fd, VIDIOC_STREAMOFF, &type);
- fcntl(fd, F_SETFL, fd_flags);
- fprintf(stderr, "\n");
+ if (doioctl(fd, VIDIOC_QBUF, &buf))
+ return;
+ }
+}
- for (unsigned i = 0; i < reqbufs.count; i++) {
- for (unsigned j = 0; j < num_planes; j++) {
- unsigned p = i * num_planes + j;
+static void do_release_buffers(struct v4l2_requestbuffers *reqbufs,
+ unsigned num_planes, bool is_mmap,
+ void *buffers[], unsigned buffer_lengths[])
+{
+ for (unsigned i = 0; i < reqbufs->count; i++) {
+ for (unsigned j = 0; j < num_planes; j++) {
+ unsigned p = i * num_planes + j;
- if (is_mmap)
- munmap(buffers[p], buffer_lengths[p]);
- else
- free(buffers[p]);
- }
+ if (is_mmap)
+ munmap(buffers[p], buffer_lengths[p]);
+ else
+ free(buffers[p]);
}
- if (fout && fout != stdout)
- fclose(fout);
}
-
- if (options[OptStreamOutMmap] || options[OptStreamOutUser]) {
- struct v4l2_format fmt;
- struct v4l2_requestbuffers reqbufs;
- int fd_flags = fcntl(fd, F_GETFL);
- bool is_mplane = capabilities &
- (V4L2_CAP_VIDEO_OUTPUT_MPLANE |
- V4L2_CAP_VIDEO_M2M_MPLANE);
- bool is_mmap = options[OptStreamOutMmap];
- bool use_poll = options[OptStreamPoll];
- __u32 type = is_mplane ?
- V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE : V4L2_BUF_TYPE_VIDEO_OUTPUT;
- FILE *fin = NULL;
- unsigned num_planes = 1;
-
- memset(&fmt, 0, sizeof(fmt));
- fmt.type = type;
- doioctl(fd, VIDIOC_G_FMT, &fmt);
-
- if (!precalculate_bars(fmt.fmt.pix.pixelformat, stream_pat % NUM_PATTERNS)) {
- fprintf(stderr, "unsupported pixelformat\n");
- return;
- }
+}
- memset(&reqbufs, 0, sizeof(reqbufs));
- reqbufs.count = reqbufs_count;
- reqbufs.type = type;
- reqbufs.memory = is_mmap ? V4L2_MEMORY_MMAP : V4L2_MEMORY_USERPTR;
+static int do_handle_cap(int fd, struct v4l2_requestbuffers *reqbufs,
+ bool is_mplane, unsigned num_planes,
+ void *buffers[], unsigned buffer_lengths[], FILE *fout,
+ unsigned *count, unsigned *last, struct timeval *tv_last)
+{
+ char ch = '+';
+ int ret;
+
+ struct v4l2_plane planes[VIDEO_MAX_PLANES];
+ struct v4l2_buffer buf;
+ memset(&buf, 0, sizeof(buf));
+ memset(planes, 0, sizeof(planes));
+
+ buf.type = reqbufs->type;
+ buf.memory = reqbufs->memory;
+ if (is_mplane) {
+ buf.m.planes = planes;
+ buf.length = VIDEO_MAX_PLANES;
+ }
- if (file) {
- if (!strcmp(file, "-"))
- fin = stdin;
- else
- fin = fopen(file, "r");
+ ret = test_ioctl(fd, VIDIOC_DQBUF, &buf);
+ if (ret < 0 && errno == EAGAIN)
+ return 0;
+ if (ret < 0) {
+ fprintf(stderr, "%s: failed: %s\n", "VIDIOC_DQBUF", strerror(errno));
+ return -1;
+ }
+ if (fout && !stream_skip) {
+ for (unsigned j = 0; j < num_planes; j++) {
+ unsigned p = buf.index * num_planes + j;
+ unsigned used = is_mplane ? planes[j].bytesused : buf.bytesused;
+ unsigned offset = is_mplane ? planes[j].data_offset : 0;
+ unsigned sz;
+
+ if (offset > used) {
+ // Should never happen
+ fprintf(stderr, "offset %d > used %d!\n",
+ offset, used);
+ offset = 0;
+ }
+ used -= offset;
+ sz = fwrite((char *)buffers[p] + offset, 1, used, fout);
+
+ if (sz != used)
+ fprintf(stderr, "%u != %u\n", sz, used);
}
+ }
+ if (buf.flags & V4L2_BUF_FLAG_KEYFRAME)
+ ch = 'K';
+ else if (buf.flags & V4L2_BUF_FLAG_PFRAME)
+ ch = 'P';
+ else if (buf.flags & V4L2_BUF_FLAG_BFRAME)
+ ch = 'B';
+ if (verbose)
+ print_buffer(stderr, buf);
+ if (test_ioctl(fd, VIDIOC_QBUF, &buf))
+ return -1;
+
+ if (!verbose) {
+ fprintf(stderr, "%c", ch);
+ fflush(stderr);
+ }
- if (doioctl(fd, VIDIOC_REQBUFS, &reqbufs))
- return;
+ if (*count == 0) {
+ gettimeofday(tv_last, NULL);
+ }
+ else {
+ struct timeval tv_cur, res;
+
+ gettimeofday(&tv_cur, NULL);
+ timersub(&tv_cur, tv_last, &res);
+ if (res.tv_sec) {
+ unsigned fps = (100 * (*count - *last)) /
+ (res.tv_sec * 100 + res.tv_usec / 10000);
+ *last = *count;
+ *tv_last = tv_cur;
+ fprintf(stderr, " %d fps\n", fps);
+ }
+ }
+ *count += 1;
+ if (stream_skip) {
+ stream_skip--;
+ return 0;
+ }
+ if (stream_count == 0)
+ return 0;
+ if (--stream_count == 0)
+ return -1;
- void *buffers[reqbufs.count * VIDEO_MAX_PLANES];
- unsigned buffer_lengths[reqbufs.count * VIDEO_MAX_PLANES];
-
- for (unsigned i = 0; i < reqbufs.count; i++) {
- struct v4l2_plane planes[VIDEO_MAX_PLANES];
- struct v4l2_buffer buf;
+ return 0;
+}
- memset(&buf, 0, sizeof(buf));
- memset(planes, 0, sizeof(planes));
- buf.type = reqbufs.type;
- buf.memory = reqbufs.memory;
- buf.index = i;
- if (is_mplane) {
- buf.m.planes = planes;
- buf.length = VIDEO_MAX_PLANES;
- }
- if (doioctl(fd, VIDIOC_QUERYBUF, &buf))
- return;
+static int do_handle_out(int fd, struct v4l2_requestbuffers *reqbufs,
+ bool is_mplane, unsigned num_planes,
+ void *buffers[], unsigned buffer_lengths[], FILE *fin,
+ unsigned *count, unsigned *last, struct timeval *tv_last)
+{
+ int ret;
+
+ struct v4l2_plane planes[VIDEO_MAX_PLANES];
+ struct v4l2_buffer buf;
+
+ memset(&buf, 0, sizeof(buf));
+ memset(planes, 0, sizeof(planes));
+ buf.type = reqbufs->type;
+ buf.memory = reqbufs->memory;
+ if (is_mplane) {
+ buf.m.planes = planes;
+ buf.length = VIDEO_MAX_PLANES;
+ }
- if (is_mplane) {
- num_planes = buf.length;
- for (unsigned j = 0; j < num_planes; j++) {
- unsigned p = i * num_planes + j;
-
- buffer_lengths[p] = planes[j].length;
- buf.m.planes[j].bytesused = planes[j].length;
- if (is_mmap) {
- buffers[p] = mmap(NULL, planes[j].length,
- PROT_READ | PROT_WRITE, MAP_SHARED,
- fd, planes[j].m.mem_offset);
-
- if (buffers[p] == MAP_FAILED) {
- fprintf(stderr, "mmap failed\n");
- return;
- }
- } else {
- buffers[p] = calloc(1, planes[j].length);
- planes[j].m.userptr = (unsigned long)buffers[p];
- }
- }
- // TODO fill_buffer_mp(buffers[i], &fmt.fmt.pix_mp);
- if (fin)
- fill_buffer_from_file(buffers, buffer_lengths,
- buf.index, num_planes, fin);
- } else {
- buffer_lengths[i] = buf.length;
- buf.bytesused = buf.length;
- if (is_mmap) {
- buffers[i] = mmap(NULL, buf.length,
- PROT_READ | PROT_WRITE, MAP_SHARED, fd, buf.m.offset);
+ ret = test_ioctl(fd, VIDIOC_DQBUF, &buf);
+ if (ret < 0 && errno == EAGAIN)
+ return 0;
+ if (ret < 0) {
+ fprintf(stderr, "%s: failed: %s\n", "VIDIOC_DQBUF", strerror(errno));
+ return -1;
+ }
+ if (fin && !fill_buffer_from_file(buffers, buffer_lengths,
+ buf.index, num_planes, fin))
+ return -1;
+ if (is_mplane) {
+ for (unsigned j = 0; j < buf.length; j++) buf.m.planes[j].bytesused = buf.m.planes[j].length;
+ }
+ else {
+ buf.bytesused = buf.length;
+ }
+ if (test_ioctl(fd, VIDIOC_QBUF, &buf))
+ return -1;
- if (buffers[i] == MAP_FAILED) {
- fprintf(stderr, "mmap failed\n");
- return;
- }
- } else {
- buffers[i] = calloc(1, buf.length);
- buf.m.userptr = (unsigned long)buffers[i];
- }
- if (!fin || !fill_buffer_from_file(buffers, buffer_lengths,
- buf.index, num_planes, fin))
- fill_buffer(buffers[i], &fmt.fmt.pix);
- }
- if (doioctl(fd, VIDIOC_QBUF, &buf))
- return;
+ fprintf(stderr, "-");
+ fflush(stderr);
+
+ if (*count == 0) {
+ gettimeofday(tv_last, NULL);
+ }
+ else {
+ struct timeval tv_cur, res;
+
+ gettimeofday(&tv_cur, NULL);
+ timersub(&tv_cur, tv_last, &res);
+ if (res.tv_sec) {
+ unsigned fps = (100 * (*count - *last)) /
+ (res.tv_sec * 100 + res.tv_usec / 10000);
+ *last = *count;
+ *tv_last = tv_cur;
+ fprintf(stderr, " %d fps\n", fps);
}
+ }
+ *count += 1;
+ if (stream_count == 0)
+ return 0;
+ if (--stream_count == 0)
+ return -1;
- type = reqbufs.type;
- if (doioctl(fd, VIDIOC_STREAMON, &type))
- return;
+ return 0;
+}
+
+void streaming_set_cap(int fd)
+{
+ struct v4l2_requestbuffers reqbufs;
+ struct v4l2_event_subscription sub;
+ int fd_flags = fcntl(fd, F_GETFL);
+ bool is_mplane = capabilities &
+ (V4L2_CAP_VIDEO_CAPTURE_MPLANE |
+ V4L2_CAP_VIDEO_M2M_MPLANE);
+ bool is_mmap = options[OptStreamMmap];
+ bool use_poll = options[OptStreamPoll];
+ __u32 type = is_mplane ?
+ V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE : V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ FILE *fout = NULL;
+ unsigned num_planes = 1;
+
+ memset(&reqbufs, 0, sizeof(reqbufs));
+ reqbufs.count = reqbufs_count;
+ reqbufs.type = type;
+ reqbufs.memory = is_mmap ? V4L2_MEMORY_MMAP : V4L2_MEMORY_USERPTR;
+ memset(&sub, 0, sizeof(sub));
+ sub.type = V4L2_EVENT_EOS;
+ ioctl(fd, VIDIOC_SUBSCRIBE_EVENT, &sub);
+
+ if (file_cap) {
+ if (!strcmp(file_cap, "-"))
+ fout = stdout;
+ else
+ fout = fopen(file_cap, "w+");
+ }
- if (use_poll)
- fcntl(fd, F_SETFL, fd_flags | O_NONBLOCK);
+ if (doioctl(fd, VIDIOC_REQBUFS, &reqbufs))
+ return;
- unsigned count = 0, last = 0;
- struct timeval tv_last;
+ void *buffers[reqbufs.count * VIDEO_MAX_PLANES];
+ unsigned buffer_lengths[reqbufs.count * VIDEO_MAX_PLANES];
- for (;;) {
- struct v4l2_plane planes[VIDEO_MAX_PLANES];
- struct v4l2_buffer buf;
- int ret;
+ do_setup_cap_buffers(fd, &reqbufs, is_mplane, num_planes,
+ is_mmap, buffers, buffer_lengths);
- if (use_poll) {
- fd_set fds;
- struct timeval tv;
- int r;
+ type = reqbufs.type;
+ if (doioctl(fd, VIDIOC_STREAMON, &type))
+ return;
- FD_ZERO(&fds);
- FD_SET(fd, &fds);
+ if (use_poll)
+ fcntl(fd, F_SETFL, fd_flags | O_NONBLOCK);
- /* Timeout. */
- tv.tv_sec = 2;
- tv.tv_usec = 0;
+ unsigned count = 0, last = 0;
+ struct timeval tv_last;
+ bool eos = false;
- r = select(fd + 1, NULL, &fds, NULL, &tv);
+ while (!eos) {
+ fd_set read_fds;
+ fd_set exception_fds;
+ int r;
- if (r == -1) {
- if (EINTR == errno)
- continue;
- fprintf(stderr, "select error: %s\n",
- strerror(errno));
- return;
- }
+ if (use_poll) {
+ struct timeval tv;
- if (r == 0) {
- fprintf(stderr, "select timeout\n");
- return;
- }
- }
+ FD_ZERO(&read_fds);
+ FD_SET(fd, &read_fds);
+ FD_ZERO(&exception_fds);
+ FD_SET(fd, &exception_fds);
- memset(&buf, 0, sizeof(buf));
- memset(planes, 0, sizeof(planes));
- buf.type = reqbufs.type;
- buf.memory = reqbufs.memory;
- if (is_mplane) {
- buf.m.planes = planes;
- buf.length = VIDEO_MAX_PLANES;
+ /* Timeout. */
+ tv.tv_sec = 2;
+ tv.tv_usec = 0;
+
+ r = select(fd + 1, &read_fds, NULL, &exception_fds, &tv);
+
+ if (r == -1) {
+ if (EINTR == errno)
+ continue;
+ fprintf(stderr, "select error: %s\n",
+ strerror(errno));
+ return;
}
- ret = test_ioctl(fd, VIDIOC_DQBUF, &buf);
- if (ret < 0 && errno == EAGAIN)
- continue;
- if (ret < 0) {
- fprintf(stderr, "%s: failed: %s\n", "VIDIOC_DQBUF", strerror(errno));
+ if (r == 0) {
+ fprintf(stderr, "select timeout\n");
return;
}
- if (fin && !fill_buffer_from_file(buffers, buffer_lengths,
- buf.index, num_planes, fin))
+ }
+
+ if (FD_ISSET(fd, &exception_fds)) {
+ struct v4l2_event ev;
+
+ while (!ioctl(fd, VIDIOC_DQEVENT, &ev)) {
+ if (ev.type != V4L2_EVENT_EOS)
+ continue;
+ eos = true;
break;
- if (is_mplane) {
- for (unsigned j = 0; j < buf.length; j++)
- buf.m.planes[j].bytesused = buf.m.planes[j].length;
- } else {
- buf.bytesused = buf.length;
}
- if (test_ioctl(fd, VIDIOC_QBUF, &buf))
- return;
+ }
- fprintf(stderr, ".");
- fflush(stderr);
-
- if (count == 0) {
- gettimeofday(&tv_last, NULL);
- } else {
- struct timeval tv_cur, res;
-
- gettimeofday(&tv_cur, NULL);
- timersub(&tv_cur, &tv_last, &res);
- if (res.tv_sec) {
- unsigned fps = (100 * (count - last)) /
- (res.tv_sec * 100 + res.tv_usec / 10000);
- last = count;
- tv_last = tv_cur;
- fprintf(stderr, " %d fps\n", fps);
- }
- }
- count++;
- if (stream_count == 0)
- continue;
- if (--stream_count == 0)
+ if (FD_ISSET(fd, &read_fds)) {
+ r = do_handle_cap(fd, &reqbufs, is_mplane, num_planes,
+ buffers, buffer_lengths, fout,
+ &count, &last, &tv_last);
+ if (r == -1)
break;
}
- if (options[OptDecoderCmd]) {
- doioctl(fd, VIDIOC_DECODER_CMD, &dec_cmd);
- options[OptDecoderCmd] = false;
- }
- doioctl(fd, VIDIOC_STREAMOFF, &type);
- fcntl(fd, F_SETFL, fd_flags);
- fprintf(stderr, "\n");
- for (unsigned i = 0; i < reqbufs.count; i++) {
- for (unsigned j = 0; j < num_planes; j++) {
- unsigned p = i * num_planes + j;
+ }
+ doioctl(fd, VIDIOC_STREAMOFF, &type);
+ fcntl(fd, F_SETFL, fd_flags);
+ fprintf(stderr, "\n");
+
+ do_release_buffers(&reqbufs, num_planes, is_mmap, buffers,
+ buffer_lengths);
+
+ if (fout && fout != stdout)
+ fclose(fout);
+}
+
+void streaming_set_out(int fd)
+{
+ struct v4l2_requestbuffers reqbufs;
+ int fd_flags = fcntl(fd, F_GETFL);
+ bool is_mplane = capabilities &
+ (V4L2_CAP_VIDEO_OUTPUT_MPLANE |
+ V4L2_CAP_VIDEO_M2M_MPLANE);
+ bool is_mmap = options[OptStreamOutMmap];
+ bool use_poll = options[OptStreamPoll];
+ __u32 type = is_mplane ?
+ V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE : V4L2_BUF_TYPE_VIDEO_OUTPUT;
+ FILE *fin = NULL;
+ unsigned num_planes = 1;
+
+
+ memset(&reqbufs, 0, sizeof(reqbufs));
+ reqbufs.count = reqbufs_count;
+ reqbufs.type = type;
+ reqbufs.memory = is_mmap ? V4L2_MEMORY_MMAP : V4L2_MEMORY_USERPTR;
+
+ if (file_out) {
+ if (!strcmp(file_out, "-"))
+ fin = stdin;
+ else
+ fin = fopen(file_out, "r");
+ }
+
+ if (doioctl(fd, VIDIOC_REQBUFS, &reqbufs))
+ return;
+
+ void *buffers[reqbufs.count * VIDEO_MAX_PLANES];
+ unsigned buffer_lengths[reqbufs.count * VIDEO_MAX_PLANES];
+
+ do_setup_out_buffers(fd, &reqbufs, is_mplane, num_planes,
+ is_mmap, buffers, buffer_lengths, fin);
+
+ type = reqbufs.type;
+ if (doioctl(fd, VIDIOC_STREAMON, &type))
+ return;
+
+ if (use_poll)
+ fcntl(fd, F_SETFL, fd_flags | O_NONBLOCK);
- if (is_mmap)
- munmap(buffers[p], buffer_lengths[p]);
- else
- free(buffers[p]);
+ unsigned count = 0, last = 0;
+ struct timeval tv_last;
+
+ for (;;) {
+ int r;
+
+ if (use_poll) {
+ fd_set fds;
+ struct timeval tv;
+
+ FD_ZERO(&fds);
+ FD_SET(fd, &fds);
+
+ /* Timeout. */
+ tv.tv_sec = 2;
+ tv.tv_usec = 0;
+
+ r = select(fd + 1, NULL, &fds, NULL, &tv);
+
+ if (r == -1) {
+ if (EINTR == errno)
+ continue;
+ fprintf(stderr, "select error: %s\n",
+ strerror(errno));
+ return;
+ }
+
+ if (r == 0) {
+ fprintf(stderr, "select timeout\n");
+ return;
}
}
- if (fin && fin != stdin)
- fclose(fin);
+ r = do_handle_out(fd, &reqbufs, is_mplane, num_planes,
+ buffers, buffer_lengths, fin,
+ &count, &last, &tv_last);
+ if (r == -1)
+ break;
+
+ }
+
+ if (options[OptDecoderCmd]) {
+ doioctl(fd, VIDIOC_DECODER_CMD, &dec_cmd);
+ options[OptDecoderCmd] = false;
}
+ doioctl(fd, VIDIOC_STREAMOFF, &type);
+ fcntl(fd, F_SETFL, fd_flags);
+ fprintf(stderr, "\n");
+
+ do_release_buffers(&reqbufs, num_planes, is_mmap, buffers,
+ buffer_lengths);
+
+ if (fin && fin != stdin)
+ fclose(fin);
+}
+
+void streaming_set(int fd)
+{
+ bool do_cap = options[OptStreamMmap] || options[OptStreamUser];
+ bool do_out = options[OptStreamOutMmap] || options[OptStreamOutUser];
+
+ if (do_cap)
+ streaming_set_cap(fd);
+ else if (do_out)
+ streaming_set_out(fd);
}
void streaming_list(int fd)
--
1.8.1.5
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