Add the function stateful_m2m that implements the stateful
codec api.
This is a preparation for having both stateful and stateless
implementations
Signed-off-by: Dafna Hirschfeld <daf...@gmail.com>
---
utils/v4l2-ctl/v4l2-ctl-streaming.cpp | 95 ++++++++++++++-------------
1 file changed, 50 insertions(+), 45 deletions(-)
diff --git a/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
b/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
index 766872b5..40ddc1c3 100644
--- a/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
+++ b/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
@@ -1933,16 +1933,12 @@ static int capture_setup(cv4l_fd &fd, cv4l_queue &in,
cv4l_fd *exp_fd)
return 0;
}
-static void streaming_set_m2m(cv4l_fd &fd, cv4l_fd &exp_fd)
+static void stateful_m2m(cv4l_fd &fd, cv4l_queue &in, cv4l_queue &out,
+ FILE *fin, FILE *fout, cv4l_fd *exp_fd_p)
{
int fd_flags = fcntl(fd.g_fd(), F_GETFL);
- cv4l_queue in(fd.g_type(), memory);
- cv4l_queue out(v4l_type_invert(fd.g_type()), out_memory);
- cv4l_queue exp_q(exp_fd.g_type(), V4L2_MEMORY_MMAP);
- cv4l_fd *exp_fd_p = NULL;
fps_timestamps fps_ts[2];
unsigned count[2] = { 0, 0 };
- FILE *file[2] = {NULL, NULL};
fd_set fds[3];
fd_set *rd_fds = &fds[0]; /* for capture */
fd_set *ex_fds = &fds[1]; /* for capture */
@@ -1953,19 +1949,6 @@ static void streaming_set_m2m(cv4l_fd &fd, cv4l_fd
&exp_fd)
fd.g_fmt(fmt[OUT], out.g_type());
fd.g_fmt(fmt[CAP], in.g_type());
- if (!fd.has_vid_m2m()) {
- fprintf(stderr, "unsupported m2m stream type\n");
- return;
- }
- if (options[OptStreamDmaBuf] && options[OptStreamOutDmaBuf]) {
- fprintf(stderr, "--stream-dmabuf and --stream-out-dmabuf not
supported for m2m devices\n");
- return;
- }
- if ((options[OptStreamDmaBuf] || options[OptStreamOutDmaBuf]) &&
exp_fd.g_fd() < 0) {
- fprintf(stderr, "--stream-dmabuf or --stream-out-dmabuf can
only work in combination with --export-device\n");
- return;
- }
-
struct v4l2_event_subscription sub;
memset(&sub, 0, sizeof(sub));
@@ -1986,34 +1969,18 @@ static void streaming_set_m2m(cv4l_fd &fd, cv4l_fd
&exp_fd)
sub.type = V4L2_EVENT_SOURCE_CHANGE;
bool have_source_change = !fd.subscribe_event(sub);
- file[CAP] = open_output_file(fd);
- file[OUT] = open_input_file(fd, out.g_type());
-
if (out.reqbufs(&fd, reqbufs_count_out))
- goto done;
-
- if (options[OptStreamDmaBuf]) {
- if (exp_q.reqbufs(&exp_fd, reqbufs_count_cap))
- goto done;
- exp_fd_p = &exp_fd;
- }
-
- if (options[OptStreamOutDmaBuf]) {
- if (exp_q.reqbufs(&exp_fd, reqbufs_count_out))
- goto done;
- if (out.export_bufs(&exp_fd, exp_fd.g_type()))
- goto done;
- }
+ return;
- if (do_setup_out_buffers(fd, out, file[OUT], true))
- goto done;
+ if (do_setup_out_buffers(fd, out, fout, true))
+ return;
if (fd.streamon(out.g_type()))
- goto done;
+ return;
if (codec_type != DECODER || !have_source_change)
if (capture_setup(fd, in, exp_fd_p))
- goto done;
+ return;
fps_ts[CAP].determine_field(fd.g_fd(), in.g_type());
fps_ts[OUT].determine_field(fd.g_fd(), out.g_type());
@@ -2049,15 +2016,15 @@ static void streaming_set_m2m(cv4l_fd &fd, cv4l_fd
&exp_fd)
continue;
fprintf(stderr, "select error: %s\n",
strerror(errno));
- goto done;
+ return;
}
if (r == 0) {
fprintf(stderr, "select timeout\n");
- goto done;
+ return;
}
if (rd_fds && FD_ISSET(fd.g_fd(), rd_fds)) {
- r = do_handle_cap(fd, in, file[CAP], NULL,
+ r = do_handle_cap(fd, in, fin, NULL,
count[CAP], fps_ts[CAP], fmt[CAP]);
if (r < 0) {
rd_fds = NULL;
@@ -2069,7 +2036,7 @@ static void streaming_set_m2m(cv4l_fd &fd, cv4l_fd
&exp_fd)
}
if (wr_fds && FD_ISSET(fd.g_fd(), wr_fds)) {
- r = do_handle_out(fd, out, file[OUT], NULL,
+ r = do_handle_out(fd, out, fout, NULL,
count[OUT], fps_ts[OUT], fmt[OUT]);
if (r < 0) {
wr_fds = NULL;
@@ -2120,7 +2087,7 @@ static void streaming_set_m2m(cv4l_fd &fd, cv4l_fd
&exp_fd)
in_source_change_event = false;
last_buffer = false;
if (capture_setup(fd, in, exp_fd_p))
- goto done;
+ return;
fd.g_fmt(fmt[OUT], out.g_type());
fd.g_fmt(fmt[CAP], in.g_type());
cap_streaming = true;
@@ -2138,7 +2105,45 @@ static void streaming_set_m2m(cv4l_fd &fd, cv4l_fd
&exp_fd)
in.free(&fd);
out.free(&fd);
tpg_free(&tpg);
+}
+
+static void streaming_set_m2m(cv4l_fd &fd, cv4l_fd &exp_fd)
+{
+ cv4l_queue in(fd.g_type(), memory);
+ cv4l_queue out(v4l_type_invert(fd.g_type()), out_memory);
+ cv4l_queue exp_q(exp_fd.g_type(), V4L2_MEMORY_MMAP);
+ cv4l_fd *exp_fd_p = NULL;
+ FILE *file[2] = {NULL, NULL};
+
+ if (!fd.has_vid_m2m()) {
+ fprintf(stderr, "unsupported m2m stream type\n");
+ return;
+ }
+ if (options[OptStreamDmaBuf] && options[OptStreamOutDmaBuf]) {
+ fprintf(stderr, "--stream-dmabuf and --stream-out-dmabuf not
supported for m2m devices\n");
+ return;
+ }
+ if ((options[OptStreamDmaBuf] || options[OptStreamOutDmaBuf]) &&
exp_fd.g_fd() < 0) {
+ fprintf(stderr, "--stream-dmabuf or --stream-out-dmabuf can
only work in combination with --export-device\n");
+ return;
+ }
+ file[CAP] = open_output_file(fd);
+ file[OUT] = open_input_file(fd, out.g_type());
+
+ if (options[OptStreamDmaBuf]) {
+ if (exp_q.reqbufs(&exp_fd, reqbufs_count_cap))
+ return;
+ exp_fd_p = &exp_fd;
+ }
+
+ if (options[OptStreamOutDmaBuf]) {
+ if (exp_q.reqbufs(&exp_fd, reqbufs_count_out))
+ return;
+ if (out.export_bufs(&exp_fd, exp_fd.g_type()))
+ return;
+ }
+ stateful_m2m(fd, in, out, file[CAP], file[OUT], exp_fd_p);
done:
if (options[OptStreamDmaBuf] || options[OptStreamOutDmaBuf])
exp_q.close_exported_fds();
--
2.17.1
