It is used to:
bypass precalculate_bars() for OUTPUT device
that takes encoded bitstreams.
handle the last chunk of input file that has
non-buffer-aligned size.
Signed-off-by: Tzu-Jung Lee <tjlee@xxxxxxxxxxxxx>
---
utils/v4l2-ctl/v4l2-ctl-streaming.cpp | 101 +++++++++++++++++++++++++++-------
1 file changed, 82 insertions(+), 19 deletions(-)
diff --git a/utils/v4l2-ctl/v4l2-ctl-streaming.cpp b/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
index 9e361af..2bcf950 100644
--- a/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
+++ b/utils/v4l2-ctl/v4l2-ctl-streaming.cpp
@@ -115,6 +115,29 @@ static const flag_def tc_flags_def[] = {
{ 0, NULL }
};
+static bool is_compressed_format(__u32 pixfmt)
+{
+ switch (pixfmt) {
+ case V4L2_PIX_FMT_MJPEG:
+ case V4L2_PIX_FMT_JPEG:
+ case V4L2_PIX_FMT_DV:
+ case V4L2_PIX_FMT_MPEG:
+ case V4L2_PIX_FMT_H264:
+ case V4L2_PIX_FMT_H264_NO_SC:
+ case V4L2_PIX_FMT_H263:
+ case V4L2_PIX_FMT_MPEG1:
+ case V4L2_PIX_FMT_MPEG2:
+ case V4L2_PIX_FMT_MPEG4:
+ case V4L2_PIX_FMT_XVID:
+ case V4L2_PIX_FMT_VC1_ANNEX_G:
+ return true;
+ default:
+ return false;
+ }
+
+ return false;
+}
+
static void print_buffer(FILE *f, struct v4l2_buffer &buf)
{
fprintf(f, "\tIndex : %d\n", buf.index);
@@ -223,23 +246,29 @@ void streaming_cmd(int ch, char *optarg)
}
static bool fill_buffer_from_file(void *buffers[], unsigned buffer_lengths[],
- unsigned buf_index, unsigned num_planes, FILE *fin)
+ unsigned buffer_bytesused[], unsigned buf_index,
+ unsigned num_planes, bool is_compressed, FILE *fin)
{
for (unsigned j = 0; j < num_planes; j++) {
unsigned p = buf_index * num_planes + j;
unsigned sz = fread(buffers[p], 1,
buffer_lengths[p], fin);
+ buffer_bytesused[j] = sz;
if (j == 0 && sz == 0 && stream_loop) {
fseek(fin, 0, SEEK_SET);
sz = fread(buffers[p], 1,
buffer_lengths[p], fin);
+
+ buffer_bytesused[j] = sz;
}
if (sz == buffer_lengths[p])
continue;
- if (sz)
+
+ // Bail out if we get weird buffer sizes or non-compressed format.
+ if (sz && !is_compressed)
fprintf(stderr, "%u != %u\n", sz, buffer_lengths[p]);
- // Bail out if we get weird buffer sizes.
+
return false;
}
return true;
@@ -312,16 +341,22 @@ 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)
{
+ bool is_compressed;
+
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)) {
+ is_compressed = is_compressed_format(fmt.fmt.pix.pixelformat);
+ if (!is_compressed &&
+ !precalculate_bars(fmt.fmt.pix.pixelformat, stream_pat)) {
fprintf(stderr, "unsupported pixelformat\n");
return;
}
+ unsigned buffer_bytesused[reqbufs->count * VIDEO_MAX_PLANES];
+
for (unsigned i = 0; i < reqbufs->count; i++) {
struct v4l2_plane planes[VIDEO_MAX_PLANES];
struct v4l2_buffer buf;
@@ -363,11 +398,11 @@ static void do_setup_out_buffers(int fd, struct v4l2_requestbuffers *reqbufs,
// TODO fill_buffer_mp(buffers[i], &fmt.fmt.pix_mp);
if (fin)
fill_buffer_from_file(buffers, buffer_lengths,
- buf.index, num_planes, fin);
+ buffer_bytesused, buf.index,
+ num_planes, is_compressed, 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);
@@ -381,9 +416,16 @@ static void do_setup_out_buffers(int fd, struct v4l2_requestbuffers *reqbufs,
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))
+
+ if (fin && fill_buffer_from_file(buffers, buffer_lengths,
+ buffer_bytesused, buf.index,
+ num_planes, is_compressed,
+ fin)) {
+ buf.bytesused = buffer_bytesused[0];
+ }
+ else {
fill_buffer(buffers[i], &fmt.fmt.pix);
+ }
}
if (doioctl(fd, VIDIOC_QBUF, &buf))
return;
@@ -511,12 +553,13 @@ static int do_handle_cap(int fd, struct v4l2_requestbuffers *reqbufs,
}
static int do_handle_out(int fd, struct v4l2_requestbuffers *reqbufs,
- bool is_mplane, unsigned num_planes,
+ bool is_compressed, bool is_mplane, unsigned num_planes,
void *buffers[], unsigned buffer_lengths[], FILE *fin,
unsigned &count, unsigned &last, struct timeval &tv_last)
{
struct v4l2_plane planes[VIDEO_MAX_PLANES];
struct v4l2_buffer buf;
+ unsigned buffer_bytesused[reqbufs->count * VIDEO_MAX_PLANES];
int ret;
memset(&buf, 0, sizeof(buf));
@@ -535,14 +578,17 @@ static int do_handle_out(int fd, struct v4l2_requestbuffers *reqbufs,
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))
+ if (fin &&!fill_buffer_from_file(buffers, buffer_lengths,
+ buffer_bytesused, buf.index,
+ num_planes, is_compressed,
+ fin)) {
return -1;
+ }
if (is_mplane) {
for (unsigned j = 0; j < buf.length; j++)
- buf.m.planes[j].bytesused = buf.m.planes[j].length;
+ buf.m.planes[j].bytesused = buffer_bytesused[j];
} else {
- buf.bytesused = buf.length;
+ buf.bytesused = buffer_bytesused[0];
}
if (test_ioctl(fd, VIDIOC_QBUF, &buf))
return -1;
@@ -688,7 +734,9 @@ static void streaming_set_cap(int fd)
static void streaming_set_out(int fd)
{
struct v4l2_requestbuffers reqbufs;
+ struct v4l2_format fmt;
int fd_flags = fcntl(fd, F_GETFL);
+ bool is_compressed;
bool is_mplane = capabilities &
(V4L2_CAP_VIDEO_OUTPUT_MPLANE |
V4L2_CAP_VIDEO_M2M_MPLANE);
@@ -710,6 +758,12 @@ static void streaming_set_out(int fd)
reqbufs.type = type;
reqbufs.memory = is_mmap ? V4L2_MEMORY_MMAP : V4L2_MEMORY_USERPTR;
+ memset(&fmt, 0, sizeof(fmt));
+ fmt.type = reqbufs.type;
+ doioctl(fd, VIDIOC_G_FMT, &fmt);
+
+ is_compressed = is_compressed_format(fmt.fmt.pix.pixelformat);
+
if (file_out) {
if (!strcmp(file_out, "-"))
fin = stdin;
@@ -765,9 +819,9 @@ static void streaming_set_out(int fd)
return;
}
}
- r = do_handle_out(fd, &reqbufs, is_mplane, num_planes,
- buffers, buffer_lengths, fin,
- count, last, tv_last);
+ r = do_handle_out(fd, &reqbufs, is_compressed, is_mplane,
+ num_planes, buffers, buffer_lengths,
+ fin, count, last, tv_last);
if (r == -1)
break;
@@ -795,6 +849,9 @@ enum stream_type {
static void streaming_set_m2m(int fd)
{
+ struct v4l2_format fmt;
+ bool is_compressed;
+
int fd_flags = fcntl(fd, F_GETFL);
bool use_poll = options[OptStreamPoll];
@@ -864,6 +921,12 @@ static void streaming_set_m2m(int fd)
is_mmap, buffers_out, buffer_lengths_out,
file[OUT]);
+ memset(&fmt, 0, sizeof(fmt));
+ fmt.type = reqbufs[OUT].type;
+ doioctl(fd, VIDIOC_G_FMT, &fmt);
+
+ is_compressed = is_compressed_format(fmt.fmt.pix.pixelformat);
+
if (doioctl(fd, VIDIOC_STREAMON, &type[CAP]) ||
doioctl(fd, VIDIOC_STREAMON, &type[OUT]))
return;
@@ -927,9 +990,9 @@ static void streaming_set_m2m(int fd)
}
if (wr_fds && FD_ISSET(fd, wr_fds)) {
- r = do_handle_out(fd, &reqbufs[OUT], is_mplane, num_planes[OUT],
- buffers_out, buffer_lengths_out, file[OUT],
- count[OUT], last[OUT], tv_last[OUT]);
+ r = do_handle_out(fd, &reqbufs[OUT], is_compressed, is_mplane,
+ num_planes[OUT], buffers_out, buffer_lengths_out,
+ file[OUT], count[OUT], last[OUT], tv_last[OUT]);
if (r < 0) {
wr_fds = NULL;
--
1.8.1.5
--
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