> -----Original Message-----
> From: [email protected] [mailto:meta-arago-
> [email protected]] On Behalf Of Maupin, Chase
> Sent: Friday, June 13, 2014 2:07 PM
> To: [email protected]
> Subject: [meta-arago] [PATCH 1/2] yavta: append yavta recipe to update to
> latest
> 
> * Append the yavta recipe found in:
>      meta-openembedded/meta-oe/recipes-multimedia/v4l2apps
>   to update it to the latest sources and update the applied
>   patch to work with those sources.
> 
> * This brings this recipe into line with mainline commit
>   bbc32a09b2b6a16d72331026d044eb4bfe17a4c5 and this bbappend
>   can be removed once meta-arago moves to the 1.7 release of
>   the Yocto project.
> 
> Signed-off-by: Chase Maupin <[email protected]>
> ---
>  ...mode-to-allow-streaming-over-the-network-.patch |  961
> ++++++++++++++++++++
>  .../recipes-multimedia/v4l2apps/yavta_git.bbappend |   12 +
>  2 files changed, 973 insertions(+)
>  create mode 100644 meta-arago-extras/recipes-
> multimedia/v4l2apps/yavta/0001-Add-stdout-mode-to-allow-streaming-over-
> the-network-.patch
>  create mode 100644 meta-arago-extras/recipes-
> multimedia/v4l2apps/yavta_git.bbappend
> 
> diff --git a/meta-arago-extras/recipes-multimedia/v4l2apps/yavta/0001-Add-
> stdout-mode-to-allow-streaming-over-the-network-.patch b/meta-arago-
> extras/recipes-multimedia/v4l2apps/yavta/0001-Add-stdout-mode-to-allow-
> streaming-over-the-network-.patch
> new file mode 100644
> index 0000000..41a5dbf
> --- /dev/null
> +++ b/meta-arago-extras/recipes-multimedia/v4l2apps/yavta/0001-Add-stdou
> +++ t-mode-to-allow-streaming-over-the-network-.patch
> @@ -0,0 +1,961 @@
> +From 141d3b3593722eb3d588e7c4b1542f810bc25853 Mon Sep 17 00:00:00
> 2001
> +From: Koen Kooi <[email protected]>
> +Date: Thu, 5 Jun 2014 11:29:20 -0500
> +Subject: [PATCH] Add stdout mode to allow streaming over the network
> +with nc
> +
> +Signed-off-by: Koen Kooi <[email protected]>
> +Signed-off-by: Chase Maupin <[email protected]>
> +---
> + yavta.c |  315
> +++++++++++++++++++++++++++++++++++-----------------------------
> + 1 file changed, 169 insertions(+), 146 deletions(-)
> +
> +diff --git a/yavta.c b/yavta.c
> +index 32adc26..b398da0 100644
> +--- a/yavta.c
> ++++ b/yavta.c
> +@@ -309,7 +309,7 @@ static bool video_has_fd(struct device *dev)
> +static int video_set_fd(struct device *dev, int fd)  {
> +     if (video_has_fd(dev)) {
> +-            printf("Can't set fd (already open).\n");
> ++            fprintf(stderr, "Can't set fd (already open).\n");
> +             return -1;
> +     }
> +
> +@@ -321,18 +321,18 @@ static int video_set_fd(struct device *dev, int
> +fd)  static int video_open(struct device *dev, const char *devname)  {
> +     if (video_has_fd(dev)) {
> +-            printf("Can't open device (already open).\n");
> ++            fprintf(stderr, "Can't open device (already open).\n");
> +             return -1;
> +     }
> +
> +     dev->fd = open(devname, O_RDWR);
> +     if (dev->fd < 0) {
> +-            printf("Error opening device %s: %s (%d).\n", devname,
> ++            fprintf(stderr, "Error opening device %s: %s (%d).\n",
> devname,
> +                    strerror(errno), errno);
> +             return dev->fd;
> +     }
> +
> +-    printf("Device %s opened.\n", devname);
> ++    fprintf(stderr, "Device %s opened.\n", devname);
> +
> +     dev->opened = 1;
> +
> +@@ -352,7 +352,7 @@ static int video_querycap(struct device *dev,
> unsigned int *capabilities)
> +     *capabilities = cap.capabilities & V4L2_CAP_DEVICE_CAPS
> +                  ? cap.device_caps : cap.capabilities;
> +
> +-    printf("Device `%s' on `%s' is a video %s (%s mplanes) device.\n",
> ++    fprintf(stderr, "Device `%s' on `%s' is a video %s (%s mplanes)
> ++device.\n",
> +             cap.card, cap.bus_info,
> +             video_is_capture(dev) ? "capture" : "output",
> +             video_is_mplane(dev) ? "with" : "without"); @@ -370,7 +370,7
> @@
> +static int cap_get_buf_type(unsigned int capabilities)
> +     } else if (capabilities & V4L2_CAP_VIDEO_OUTPUT) {
> +             return V4L2_BUF_TYPE_VIDEO_OUTPUT;
> +     } else {
> +-            printf("Device supports neither capture nor output.\n");
> ++            fprintf(stderr, "Device supports neither capture nor
> output.\n");
> +             return -EINVAL;
> +     }
> +
> +@@ -440,7 +440,7 @@ static int get_control(struct device *dev, unsigned int
> id, int type,
> +             }
> +     }
> +
> +-    printf("unable to get control 0x%8.8x: %s (%d).\n",
> ++    fprintf(stderr, "unable to get control 0x%8.8x: %s (%d).\n",
> +             id, strerror(errno), errno);
> +     return -1;
> + }
> +@@ -484,12 +484,12 @@ static void set_control(struct device *dev,
> unsigned int id, int type,
> +                     val = old.value;
> +     }
> +     if (ret == -1) {
> +-            printf("unable to set control 0x%8.8x: %s (%d).\n",
> ++            fprintf(stderr, "unable to set control 0x%8.8x: %s (%d).\n",
> +                     id, strerror(errno), errno);
> +             return;
> +     }
> +
> +-    printf("Control 0x%08x set to %" PRId64 ", is %" PRId64 "\n",
> ++    fprintf(stderr, "Control 0x%08x set to %" PRId64 ", is %" PRId64
> ++"\n",
> +            id, old_val, val);
> + }
> +
> +@@ -504,7 +504,7 @@ static int video_get_format(struct device *dev)
> +
> +     ret = ioctl(dev->fd, VIDIOC_G_FMT, &fmt);
> +     if (ret < 0) {
> +-            printf("Unable to get format: %s (%d).\n", strerror(errno),
> ++            fprintf(stderr, "Unable to get format: %s (%d).\n",
> strerror(errno),
> +                     errno);
> +             return ret;
> +     }
> +@@ -514,7 +514,7 @@ static int video_get_format(struct device *dev)
> +             dev->height = fmt.fmt.pix_mp.height;
> +             dev->num_planes = fmt.fmt.pix_mp.num_planes;
> +
> +-            printf("Video format: %s (%08x) %ux%u field %s, %u planes:
> \n",
> ++        fprintf(stderr, "Video format: %s (%08x) %ux%u field %s, %u
> ++planes: \n",
> +                     v4l2_format_name(fmt.fmt.pix_mp.pixelformat),
> fmt.fmt.pix_mp.pixelformat,
> +                     fmt.fmt.pix_mp.width, fmt.fmt.pix_mp.height,
> +                     v4l2_field_name(fmt.fmt.pix_mp.field),
> +@@ -527,7 +527,7 @@ static int video_get_format(struct device *dev)
> +
>       fmt.fmt.pix_mp.plane_fmt[i].bytesperline ?
> +
>       fmt.fmt.pix_mp.plane_fmt[i].sizeimage : 0;
> +
> +-                    printf(" * Stride %u, buffer size %u\n",
> ++                    fprintf(stderr, " * Stride %u, buffer size %u\n",
> +                             fmt.fmt.pix_mp.plane_fmt[i].bytesperline,
> +                             fmt.fmt.pix_mp.plane_fmt[i].sizeimage);
> +             }
> +@@ -539,7 +539,7 @@ static int video_get_format(struct device *dev)
> +             dev->plane_fmt[0].bytesperline = fmt.fmt.pix.bytesperline;
> +             dev->plane_fmt[0].sizeimage = fmt.fmt.pix.bytesperline ?
> +fmt.fmt.pix.sizeimage : 0;
> +
> +-            printf("Video format: %s (%08x) %ux%u (stride %u) field %s
> buffer size %u\n",
> ++            fprintf(stderr, "Video format: %s (%08x) %ux%u (stride %u)
> field %s
> ++buffer size %u\n",
> +                     v4l2_format_name(fmt.fmt.pix.pixelformat),
> fmt.fmt.pix.pixelformat,
> +                     fmt.fmt.pix.width, fmt.fmt.pix.height,
> fmt.fmt.pix.bytesperline,
> +                     v4l2_field_name(fmt.fmt.pix_mp.field),
> +@@ -581,25 +581,25 @@ static int video_set_format(struct device *dev,
> +unsigned int w, unsigned int h,
> +
> +     ret = ioctl(dev->fd, VIDIOC_S_FMT, &fmt);
> +     if (ret < 0) {
> +-            printf("Unable to set format: %s (%d).\n", strerror(errno),
> ++            fprintf(stderr, "Unable to set format: %s (%d).\n",
> strerror(errno),
> +                     errno);
> +             return ret;
> +     }
> +
> +     if (video_is_mplane(dev)) {
> +-            printf("Video format set: %s (%08x) %ux%u field %s, %u
> planes: \n",
> ++            fprintf(stderr, "Video format set: %s (%08x) %ux%u field %s,
> %u
> ++planes: \n",
> +                     v4l2_format_name(fmt.fmt.pix_mp.pixelformat),
> fmt.fmt.pix_mp.pixelformat,
> +                     fmt.fmt.pix_mp.width, fmt.fmt.pix_mp.height,
> +                     v4l2_field_name(fmt.fmt.pix_mp.field),
> +                     fmt.fmt.pix_mp.num_planes);
> +
> +             for (i = 0; i < fmt.fmt.pix_mp.num_planes; i++) {
> +-                    printf(" * Stride %u, buffer size %u\n",
> ++                    fprintf(stderr, " * Stride %u, buffer size %u\n",
> +                             fmt.fmt.pix_mp.plane_fmt[i].bytesperline,
> +                             fmt.fmt.pix_mp.plane_fmt[i].sizeimage);
> +             }
> +     } else {
> +-            printf("Video format set: %s (%08x) %ux%u (stride %u) field %s
> buffer size %u\n",
> ++            fprintf(stderr, "Video format set: %s (%08x) %ux%u (stride %u)
> field
> ++%s buffer size %u\n",
> +                     v4l2_format_name(fmt.fmt.pix.pixelformat),
> fmt.fmt.pix.pixelformat,
> +                     fmt.fmt.pix.width, fmt.fmt.pix.height,
> fmt.fmt.pix.bytesperline,
> +                     v4l2_field_name(fmt.fmt.pix.field),
> +@@ -619,16 +619,16 @@ static int video_set_framerate(struct device
> +*dev, struct v4l2_fract *time_per_f
> +
> +     ret = ioctl(dev->fd, VIDIOC_G_PARM, &parm);
> +     if (ret < 0) {
> +-            printf("Unable to get frame rate: %s (%d).\n",
> ++            fprintf(stderr, "Unable to get frame rate: %s (%d).\n",
> +                     strerror(errno), errno);
> +             return ret;
> +     }
> +
> +-    printf("Current frame rate: %u/%u\n",
> ++    fprintf(stderr, "Current frame rate: %u/%u\n",
> +             parm.parm.capture.timeperframe.numerator,
> +             parm.parm.capture.timeperframe.denominator);
> +
> +-    printf("Setting frame rate to: %u/%u\n",
> ++    fprintf(stderr, "Setting frame rate to: %u/%u\n",
> +             time_per_frame->numerator,
> +             time_per_frame->denominator);
> +
> +@@ -637,19 +637,19 @@ static int video_set_framerate(struct device
> +*dev, struct v4l2_fract *time_per_f
> +
> +     ret = ioctl(dev->fd, VIDIOC_S_PARM, &parm);
> +     if (ret < 0) {
> +-            printf("Unable to set frame rate: %s (%d).\n", strerror(errno),
> ++            fprintf(stderr, "Unable to set frame rate: %s (%d).\n",
> ++strerror(errno),
> +                     errno);
> +             return ret;
> +     }
> +
> +     ret = ioctl(dev->fd, VIDIOC_G_PARM, &parm);
> +     if (ret < 0) {
> +-            printf("Unable to get frame rate: %s (%d).\n", strerror(errno),
> ++            fprintf(stderr, "Unable to get frame rate: %s (%d).\n",
> ++strerror(errno),
> +                     errno);
> +             return ret;
> +     }
> +
> +-    printf("Frame rate set: %u/%u\n",
> ++    fprintf(stderr, "Frame rate set: %u/%u\n",
> +             parm.parm.capture.timeperframe.numerator,
> +             parm.parm.capture.timeperframe.denominator);
> +     return 0;
> +@@ -674,7 +674,7 @@ static int video_buffer_mmap(struct device *dev,
> struct buffer *buffer,
> +             buffer->mem[i] = mmap(0, length, PROT_READ | PROT_WRITE,
> MAP_SHARED,
> +                                   dev->fd, offset);
> +             if (buffer->mem[i] == MAP_FAILED) {
> +-                    printf("Unable to map buffer %u/%u: %s (%d)\n",
> ++                    fprintf(stderr, "Unable to map buffer %u/%u: %s
> (%d)\n",
> +                            buffer->idx, i, strerror(errno), errno);
> +                     return -1;
> +             }
> +@@ -682,7 +682,7 @@ static int video_buffer_mmap(struct device *dev,
> struct buffer *buffer,
> +             buffer->size[i] = length;
> +             buffer->padding[i] = 0;
> +
> +-            printf("Buffer %u/%u mapped at address %p.\n",
> ++            fprintf(stderr, "Buffer %u/%u mapped at address %p.\n",
> +                    buffer->idx, i, buffer->mem[i]);
> +     }
> +
> +@@ -697,7 +697,7 @@ static int video_buffer_munmap(struct device *dev,
> struct buffer *buffer)
> +     for (i = 0; i < dev->num_planes; i++) {
> +             ret = munmap(buffer->mem[i], buffer->size[i]);
> +             if (ret < 0) {
> +-                    printf("Unable to unmap buffer %u/%u: %s (%d)\n",
> ++                    fprintf(stderr, "Unable to unmap buffer %u/%u: %s
> (%d)\n",
> +                            buffer->idx, i, strerror(errno), errno);
> +             }
> +
> +@@ -725,7 +725,7 @@ static int video_buffer_alloc_userptr(struct device
> *dev, struct buffer *buffer,
> +             ret = posix_memalign(&buffer->mem[i], page_size,
> +                                  length + offset + padding);
> +             if (ret < 0) {
> +-                    printf("Unable to allocate buffer %u/%u (%d)\n",
> ++                    fprintf(stderr, "Unable to allocate buffer %u/%u
> (%d)\n",
> +                            buffer->idx, i, ret);
> +                     return -ENOMEM;
> +             }
> +@@ -734,7 +734,7 @@ static int video_buffer_alloc_userptr(struct device
> *dev, struct buffer *buffer,
> +             buffer->size[i] = length;
> +             buffer->padding[i] = padding;
> +
> +-            printf("Buffer %u/%u allocated at address %p.\n",
> ++            fprintf(stderr, "Buffer %u/%u allocated at address %p.\n",
> +                    buffer->idx, i, buffer->mem[i]);
> +     }
> +
> +@@ -809,12 +809,12 @@ static int video_alloc_buffers(struct device
> +*dev, int nbufs,
> +
> +     ret = ioctl(dev->fd, VIDIOC_REQBUFS, &rb);
> +     if (ret < 0) {
> +-            printf("Unable to request buffers: %s (%d).\n", strerror(errno),
> ++            fprintf(stderr, "Unable to request buffers: %s (%d).\n",
> ++strerror(errno),
> +                     errno);
> +             return ret;
> +     }
> +
> +-    printf("%u buffers requested.\n", rb.count);
> ++    fprintf(stderr, "%u buffers requested.\n", rb.count);
> +
> +     buffers = malloc(rb.count * sizeof buffers[0]);
> +     if (buffers == NULL)
> +@@ -835,12 +835,12 @@ static int video_alloc_buffers(struct device
> +*dev, int nbufs,
> +
> +             ret = ioctl(dev->fd, VIDIOC_QUERYBUF, &buf);
> +             if (ret < 0) {
> +-                    printf("Unable to query buffer %u: %s (%d).\n", i,
> ++                    fprintf(stderr, "Unable to query buffer %u: %s
> (%d).\n", i,
> +                             strerror(errno), errno);
> +                     return ret;
> +             }
> +             get_ts_flags(buf.flags, &ts_type, &ts_source);
> +-            printf("length: %u offset: %u timestamp type/source:
> %s/%s\n",
> ++            fprintf(stderr, "length: %u offset: %u timestamp type/source:
> ++%s/%s\n",
> +                    buf.length, buf.m.offset, ts_type, ts_source);
> +
> +             buffers[i].idx = i;
> +@@ -899,12 +899,12 @@ static int video_free_buffers(struct device *dev)
> +
> +     ret = ioctl(dev->fd, VIDIOC_REQBUFS, &rb);
> +     if (ret < 0) {
> +-            printf("Unable to release buffers: %s (%d).\n",
> ++            fprintf(stderr, "Unable to release buffers: %s (%d).\n",
> +                     strerror(errno), errno);
> +             return ret;
> +     }
> +
> +-    printf("%u buffers released.\n", dev->nbufs);
> ++    fprintf(stderr, "%u buffers released.\n", dev->nbufs);
> +
> +     free(dev->buffers);
> +     dev->nbufs = 0;
> +@@ -974,7 +974,7 @@ static int video_queue_buffer(struct device *dev,
> +int index, enum buffer_fill_mo
> +
> +     ret = ioctl(dev->fd, VIDIOC_QBUF, &buf);
> +     if (ret < 0)
> +-            printf("Unable to queue buffer: %s (%d).\n",
> ++            fprintf(stderr, "Unable to queue buffer: %s (%d).\n",
> +                     strerror(errno), errno);
> +
> +     return ret;
> +@@ -987,7 +987,7 @@ static int video_enable(struct device *dev, int
> +enable)
> +
> +     ret = ioctl(dev->fd, enable ? VIDIOC_STREAMON : VIDIOC_STREAMOFF,
> &type);
> +     if (ret < 0) {
> +-            printf("Unable to %s streaming: %s (%d).\n",
> ++            fprintf(stderr, "Unable to %s streaming: %s (%d).\n",
> +                     enable ? "start" : "stop", strerror(errno), errno);
> +             return ret;
> +     }
> +@@ -1009,10 +1009,10 @@ static void video_query_menu(struct device
> *dev, struct v4l2_queryctrl *query,
> +                     continue;
> +
> +             if (query->type == V4L2_CTRL_TYPE_MENU)
> +-                    printf("  %u: %.32s%s\n", menu.index, menu.name,
> ++                    fprintf(stderr, "  %u: %.32s%s\n", menu.index,
> menu.name,
> +                            menu.index == value ? " (*)" : "");
> +             else
> +-                    printf("  %u: %lld%s\n", menu.index, menu.value,
> ++                    fprintf(stderr, "  %u: %lld%s\n", menu.index,
> menu.value,
> +                            menu.index == value ? " (*)" : "");
> +     };
> + }
> +@@ -1043,7 +1043,7 @@ static void video_list_controls(struct device *dev)
> +                     continue;
> +
> +             if (query.type == V4L2_CTRL_TYPE_CTRL_CLASS) {
> +-                    printf("--- %s (class 0x%08x) ---\n", query.name,
> query.id);
> ++                    fprintf(stderr, "--- %s (class 0x%08x) ---\n",
> query.name,
> ++query.id);
> +                     continue;
> +             }
> +
> +@@ -1053,7 +1053,7 @@ static void video_list_controls(struct device *dev)
> +             else
> +                     sprintf(value, "%" PRId64, val64);
> +
> +-            printf("control 0x%08x `%s' min %d max %d step %d default
> %d current %s.\n",
> ++            fprintf(stderr, "control 0x%08x `%s' min %d max %d step %d
> default
> ++%d current %s.\n",
> +                     query.id, query.name, query.minimum,
> query.maximum,
> +                     query.step, query.default_value, value);
> +
> +@@ -1065,9 +1065,9 @@ static void video_list_controls(struct device *dev)
> +     }
> +
> +     if (nctrls)
> +-            printf("%u control%s found.\n", nctrls, nctrls > 1 ? "s" : "");
> ++            fprintf(stderr, "%u control%s found.\n", nctrls, nctrls > 1 ? 
> "s" :
> ++"");
> +     else
> +-            printf("No control found.\n");
> ++            fprintf(stderr, "No control found.\n");
> + }
> +
> + static void video_enum_frame_intervals(struct device *dev, __u32
> +pixelformat, @@ -1088,30 +1088,30 @@ static void
> video_enum_frame_intervals(struct device *dev, __u32 pixelformat,
> +                     break;
> +
> +             if (i != ival.index)
> +-                    printf("Warning: driver returned wrong ival index "
> ++                    fprintf(stderr, "Warning: driver returned wrong ival
> index "
> +                             "%u.\n", ival.index);
> +             if (pixelformat != ival.pixel_format)
> +-                    printf("Warning: driver returned wrong ival pixel "
> ++                    fprintf(stderr, "Warning: driver returned wrong ival
> pixel "
> +                             "format %08x.\n", ival.pixel_format);
> +             if (width != ival.width)
> +-                    printf("Warning: driver returned wrong ival width "
> ++                    fprintf(stderr, "Warning: driver returned wrong ival
> width "
> +                             "%u.\n", ival.width);
> +             if (height != ival.height)
> +-                    printf("Warning: driver returned wrong ival height "
> ++                    fprintf(stderr, "Warning: driver returned wrong ival
> height "
> +                             "%u.\n", ival.height);
> +
> +             if (i != 0)
> +-                    printf(", ");
> ++                    fprintf(stderr, ", ");
> +
> +             switch (ival.type) {
> +             case V4L2_FRMIVAL_TYPE_DISCRETE:
> +-                    printf("%u/%u",
> ++                    fprintf(stderr, "%u/%u",
> +                             ival.discrete.numerator,
> +                             ival.discrete.denominator);
> +                     break;
> +
> +             case V4L2_FRMIVAL_TYPE_CONTINUOUS:
> +-                    printf("%u/%u - %u/%u",
> ++                    fprintf(stderr, "%u/%u - %u/%u",
> +                             ival.stepwise.min.numerator,
> +                             ival.stepwise.min.denominator,
> +                             ival.stepwise.max.numerator,
> +@@ -1119,7 +1119,7 @@ static void video_enum_frame_intervals(struct
> device *dev, __u32 pixelformat,
> +                     return;
> +
> +             case V4L2_FRMIVAL_TYPE_STEPWISE:
> +-                    printf("%u/%u - %u/%u (by %u/%u)",
> ++                    fprintf(stderr, "%u/%u - %u/%u (by %u/%u)",
> +                             ival.stepwise.min.numerator,
> +                             ival.stepwise.min.denominator,
> +                             ival.stepwise.max.numerator,
> +@@ -1149,23 +1149,23 @@ static void video_enum_frame_sizes(struct
> device *dev, __u32 pixelformat)
> +                     break;
> +
> +             if (i != frame.index)
> +-                    printf("Warning: driver returned wrong frame index "
> ++                    fprintf(stderr, "Warning: driver returned wrong frame
> index "
> +                             "%u.\n", frame.index);
> +             if (pixelformat != frame.pixel_format)
> +-                    printf("Warning: driver returned wrong frame pixel "
> ++                    fprintf(stderr, "Warning: driver returned wrong frame
> pixel "
> +                             "format %08x.\n", frame.pixel_format);
> +
> +             switch (frame.type) {
> +             case V4L2_FRMSIZE_TYPE_DISCRETE:
> +-                    printf("\tFrame size: %ux%u (", frame.discrete.width,
> ++                    fprintf(stderr, "\tFrame size: %ux%u (",
> frame.discrete.width,
> +                             frame.discrete.height);
> +                     video_enum_frame_intervals(dev,
> frame.pixel_format,
> +                             frame.discrete.width, frame.discrete.height);
> +-                    printf(")\n");
> ++                    fprintf(stderr, ")\n");
> +                     break;
> +
> +             case V4L2_FRMSIZE_TYPE_CONTINUOUS:
> +-                    printf("\tFrame size: %ux%u - %ux%u (",
> ++                    fprintf(stderr, "\tFrame size: %ux%u - %ux%u (",
> +                             frame.stepwise.min_width,
> +                             frame.stepwise.min_height,
> +                             frame.stepwise.max_width,
> +@@ -1173,11 +1173,11 @@ static void video_enum_frame_sizes(struct
> device *dev, __u32 pixelformat)
> +                     video_enum_frame_intervals(dev,
> frame.pixel_format,
> +                             frame.stepwise.max_width,
> +                             frame.stepwise.max_height);
> +-                    printf(")\n");
> ++                    fprintf(stderr, ")\n");
> +                     break;
> +
> +             case V4L2_FRMSIZE_TYPE_STEPWISE:
> +-                    printf("\tFrame size: %ux%u - %ux%u (by %ux%u) (\n",
> ++                    fprintf(stderr, "\tFrame size: %ux%u - %ux%u (by
> %ux%u) (\n",
> +                             frame.stepwise.min_width,
> +                             frame.stepwise.min_height,
> +                             frame.stepwise.max_width,
> +@@ -1187,7 +1187,7 @@ static void video_enum_frame_sizes(struct device
> *dev, __u32 pixelformat)
> +                     video_enum_frame_intervals(dev,
> frame.pixel_format,
> +                             frame.stepwise.max_width,
> +                             frame.stepwise.max_height);
> +-                    printf(")\n");
> ++                    fprintf(stderr, ")\n");
> +                     break;
> +
> +             default:
> +@@ -1211,19 +1211,19 @@ static void video_enum_formats(struct device
> *dev, enum v4l2_buf_type type)
> +                     break;
> +
> +             if (i != fmt.index)
> +-                    printf("Warning: driver returned wrong format index "
> ++                    fprintf(stderr, "Warning: driver returned wrong format
> index "
> +                             "%u.\n", fmt.index);
> +             if (type != fmt.type)
> +-                    printf("Warning: driver returned wrong format type "
> ++                    fprintf(stderr, "Warning: driver returned wrong format
> type "
> +                             "%u.\n", fmt.type);
> +
> +-            printf("\tFormat %u: %s (%08x)\n", i,
> ++            fprintf(stderr, "\tFormat %u: %s (%08x)\n", i,
> +                     v4l2_format_name(fmt.pixelformat), fmt.pixelformat);
> +-            printf("\tType: %s (%u)\n", v4l2_buf_type_name(fmt.type),
> ++            fprintf(stderr, "\tType: %s (%u)\n",
> v4l2_buf_type_name(fmt.type),
> +                     fmt.type);
> +-            printf("\tName: %.32s\n", fmt.description);
> ++            fprintf(stderr, "\tName: %.32s\n", fmt.description);
> +             video_enum_frame_sizes(dev, fmt.pixelformat);
> +-            printf("\n");
> ++            fprintf(stderr, "\n");
> +     }
> + }
> +
> +@@ -1241,13 +1241,13 @@ static void video_enum_inputs(struct device
> *dev)
> +                     break;
> +
> +             if (i != input.index)
> +-                    printf("Warning: driver returned wrong input index "
> ++                    fprintf(stderr, "Warning: driver returned wrong input
> index "
> +                             "%u.\n", input.index);
> +
> +-            printf("\tInput %u: %s.\n", i, input.name);
> ++            fprintf(stderr, "\tInput %u: %s.\n", i, input.name);
> +     }
> +
> +-    printf("\n");
> ++    fprintf(stderr, "\n");
> + }
> +
> + static int video_get_input(struct device *dev) @@ -1257,7 +1257,7 @@
> +static int video_get_input(struct device *dev)
> +
> +     ret = ioctl(dev->fd, VIDIOC_G_INPUT, &input);
> +     if (ret < 0) {
> +-            printf("Unable to get current input: %s (%d).\n",
> ++            fprintf(stderr, "Unable to get current input: %s (%d).\n",
> +                     strerror(errno), errno);
> +             return ret;
> +     }
> +@@ -1272,7 +1272,7 @@ static int video_set_input(struct device *dev,
> +unsigned int input)
> +
> +     ret = ioctl(dev->fd, VIDIOC_S_INPUT, &_input);
> +     if (ret < 0)
> +-            printf("Unable to select input %u: %s (%d).\n", input,
> ++            fprintf(stderr, "Unable to select input %u: %s (%d).\n", input,
> +                     strerror(errno), errno);
> +
> +     return ret;
> +@@ -1291,14 +1291,14 @@ static int video_set_quality(struct device
> +*dev, unsigned int quality)
> +
> +     ret = ioctl(dev->fd, VIDIOC_S_JPEGCOMP, &jpeg);
> +     if (ret < 0) {
> +-            printf("Unable to set quality to %u: %s (%d).\n", quality,
> ++            fprintf(stderr, "Unable to set quality to %u: %s (%d).\n",
> quality,
> +                     strerror(errno), errno);
> +             return ret;
> +     }
> +
> +     ret = ioctl(dev->fd, VIDIOC_G_JPEGCOMP, &jpeg);
> +     if (ret >= 0)
> +-            printf("Quality set to %u\n", jpeg.quality);
> ++            fprintf(stderr, "Quality set to %u\n", jpeg.quality);
> +
> +     return 0;
> + }
> +@@ -1313,7 +1313,7 @@ static int video_load_test_pattern(struct device
> *dev, const char *filename)
> +     if (filename != NULL) {
> +             fd = open(filename, O_RDONLY);
> +             if (fd == -1) {
> +-                    printf("Unable to open test pattern file '%s': %s
> (%d).\n",
> ++                    fprintf(stderr, "Unable to open test pattern file '%s':
> %s
> ++(%d).\n",
> +                             filename, strerror(errno), errno);
> +                     return -errno;
> +             }
> +@@ -1331,7 +1331,7 @@ static int video_load_test_pattern(struct device
> *dev, const char *filename)
> +             if (filename != NULL) {
> +                     ret = read(fd, dev->pattern[plane], size);
> +                     if (ret != (int)size && dev-
> >plane_fmt[plane].bytesperline != 0) {
> +-                            printf("Test pattern file size %u doesn't match
> image size %u\n",
> ++                            fprintf(stderr, "Test pattern file size %u
> doesn't match image
> ++size %u\n",
> +                                     ret, size);
> +                             ret = -EINVAL;
> +                             goto done;
> +@@ -1341,7 +1341,7 @@ static int video_load_test_pattern(struct device
> *dev, const char *filename)
> +                     unsigned int i;
> +
> +                     if (dev->plane_fmt[plane].bytesperline == 0) {
> +-                            printf("Compressed format detected for plane
> %u and no test pattern filename given.\n"
> ++                            fprintf(stderr, "Compressed format detected
> for plane %u and no test pattern filename given.\n"
> +                                     "The test pattern can't be generated
> automatically.\n", plane);
> +                             ret = -EINVAL;
> +                             goto done;
> +@@ -1410,7 +1410,7 @@ static void video_verify_buffer(struct device
> +*dev, struct v4l2_buffer *buf)
> +
> +             if (dev->plane_fmt[plane].sizeimage &&
> +                 dev->plane_fmt[plane].sizeimage != length)
> +-                    printf("Warning: bytes used %u != image size %u for
> plane %u\n",
> ++                    fprintf(stderr, "Warning: bytes used %u != image size
> %u for plane
> ++%u\n",
> +                            length, dev->plane_fmt[plane].sizeimage, plane);
> +
> +             if (buffer->padding[plane] == 0)
> +@@ -1424,16 +1424,16 @@ static void video_verify_buffer(struct device
> *dev, struct v4l2_buffer *buf)
> +             }
> +
> +             if (errors) {
> +-                    printf("Warning: %u bytes overwritten among %u first
> padding bytes for plane %u\n",
> ++                    fprintf(stderr, "Warning: %u bytes overwritten among
> %u first
> ++padding bytes for plane %u\n",
> +                            errors, dirty, plane);
> +
> +                     dirty = (dirty + 15) & ~15;
> +                     dirty = dirty > 32 ? 32 : dirty;
> +
> +                     for (i = 0; i < dirty; ++i) {
> +-                            printf("%02x ", data[i]);
> ++                            fprintf(stderr, "%02x ", data[i]);
> +                             if (i % 16 == 15)
> +-                                    printf("\n");
> ++                                    fprintf(stderr, "\n");
> +                     }
> +             }
> +     }
> +@@ -1481,18 +1481,32 @@ static void video_save_image(struct device
> +*dev, struct v4l2_buffer *buf,
> +
> +             ret = write(fd, dev->buffers[buf->index].mem[i], length);
> +             if (ret < 0) {
> +-                    printf("write error: %s (%d)\n", strerror(errno), 
> errno);
> ++                    fprintf(stderr, "write error: %s (%d)\n", 
> strerror(errno),
> errno);
> +                     break;
> +             } else if (ret != (int)length)
> +-                    printf("write error: only %d bytes written instead of
> %u\n",
> ++                    fprintf(stderr, "write error: only %d bytes written
> instead of
> ++%u\n",
> +                            ret, length);
> +     }
> +     close(fd);
> + }
> +
> ++static void video_stdout_image(struct device *dev, struct v4l2_buffer
> ++*buf) {
> ++    int ret;
> ++
> ++    fprintf(stderr, "stdout");
> ++    ret = fwrite(dev->buffers[buf->index].mem, buf->bytesused, 1,
> ++ stdout);
> ++
> ++    if (ret < 0)
> ++        fprintf(stderr, "write error: %s (%d)\n", strerror(errno), errno);
> ++    else if (ret != (int)buf->bytesused)
> ++        fprintf(stderr, "write error: only %d bytes written instead of 
> %u\n",
> ++                ret, buf->bytesused);
> ++}
> ++
> + static int video_do_capture(struct device *dev, unsigned int nframes,
> +     unsigned int skip, unsigned int delay, const char *pattern,
> +-    int do_requeue_last, enum buffer_fill_mode fill)
> ++    int do_requeue_last, enum buffer_fill_mode fill, int do_stdout)
> + {
> +     struct v4l2_plane planes[VIDEO_MAX_PLANES];
> +     struct v4l2_buffer buf;
> +@@ -1529,7 +1543,7 @@ static int video_do_capture(struct device *dev,
> unsigned int nframes,
> +             ret = ioctl(dev->fd, VIDIOC_DQBUF, &buf);
> +             if (ret < 0) {
> +                     if (errno != EIO) {
> +-                            printf("Unable to dequeue buffer: %s
> (%d).\n",
> ++                            fprintf(stderr, "Unable to dequeue buffer: %s
> (%d).\n",
> +                                     strerror(errno), errno);
> +                             goto done;
> +                     }
> +@@ -1550,7 +1564,7 @@ static int video_do_capture(struct device *dev,
> +unsigned int nframes,
> +
> +             clock_gettime(CLOCK_MONOTONIC, &ts);
> +             get_ts_flags(buf.flags, &ts_type, &ts_source);
> +-            printf("%u (%u) [%c] %s %u %u B %ld.%06ld %ld.%06ld %.3f fps
> ts %s/%s\n", i, buf.index,
> ++            fprintf(stderr, "%u (%u) [%c] %s %u %u B %ld.%06ld %ld.%06ld
> %.3f
> ++fps ts %s/%s\n", i, buf.index,
> +                     (buf.flags & V4L2_BUF_FLAG_ERROR) ? 'E' : '-',
> +                     v4l2_field_name(buf.field),
> +                     buf.sequence, buf.bytesused, buf.timestamp.tv_sec,
> @@ -1563,6
> ++1577,9 @@ static int video_do_capture(struct device *dev, unsigned int
> nframes,
> +             if (video_is_capture(dev) && pattern && !skip)
> +                     video_save_image(dev, &buf, pattern, i);
> +
> ++            if (video_is_capture(dev) && do_stdout && !skip)
> ++                    video_stdout_image(dev, &buf);
> ++
> +             if (skip)
> +                     --skip;
> +
> +@@ -1577,7 +1594,7 @@ static int video_do_capture(struct device *dev,
> +unsigned int nframes,
> +
> +             ret = video_queue_buffer(dev, buf.index, fill);
> +             if (ret < 0) {
> +-                    printf("Unable to requeue buffer: %s (%d).\n",
> ++                    fprintf(stderr, "Unable to requeue buffer: %s (%d).\n",
> +                             strerror(errno), errno);
> +                     goto done;
> +             }
> +@@ -1587,7 +1604,7 @@ static int video_do_capture(struct device *dev,
> unsigned int nframes,
> +     video_enable(dev, 0);
> +
> +     if (nframes == 0) {
> +-            printf("No frames captured.\n");
> ++            fprintf(stderr, "No frames captured.\n");
> +             goto done;
> +     }
> +
> +@@ -1604,7 +1621,7 @@ static int video_do_capture(struct device *dev,
> unsigned int nframes,
> +     bps = size/(ts.tv_nsec/1000.0+1000000.0*ts.tv_sec)*1000000.0;
> +     fps = i/(ts.tv_nsec/1000.0+1000000.0*ts.tv_sec)*1000000.0;
> +
> +-    printf("Captured %u frames in %lu.%06lu seconds (%f fps, %f B/s).\n",
> ++    fprintf(stderr, "Captured %u frames in %lu.%06lu seconds (%f fps, %f
> ++B/s).\n",
> +             i, ts.tv_sec, ts.tv_nsec/1000, fps, bps);
> +
> + done:
> +@@ -1616,42 +1633,42 @@ done:
> +
> + static void usage(const char *argv0)
> + {
> +-    printf("Usage: %s [options] device\n", argv0);
> +-    printf("Supported options:\n");
> +-    printf("-B, --buffer-type               Buffer type (\"capture\",
> \"output\",\n");
> +-    printf("                                \"capture-mplane\" or \"output-
> mplane\")\n");
> +-    printf("-c, --capture[=nframes]         Capture frames\n");
> +-    printf("-C, --check-overrun             Verify dequeued frames for
> buffer overrun\n");
> +-    printf("-d, --delay                     Delay (in ms) before
> requeuing buffers\n");
> +-    printf("-f, --format format             Set the video format\n");
> +-    printf("-F, --file[=name]               Read/write frames from/to 
> disk\n");
> +-    printf("\tFor video capture devices, the first '#' character in the file
> name is\n");
> +-    printf("\texpanded to the frame sequence number. The default file
> name is\n");
> +-    printf("\t'frame-#.bin'.\n");
> +-    printf("-h, --help                      Show this help screen\n");
> +-    printf("-i, --input input               Select the video input\n");
> +-    printf("-I, --fill-frames               Fill frames with check pattern 
> before
> queuing them\n");
> +-    printf("-l, --list-controls             List available controls\n");
> +-    printf("-n, --nbufs n                   Set the number of video
> buffers\n");
> +-    printf("-p, --pause                     Pause before starting the
> video stream\n");
> +-    printf("-q, --quality n                 MJPEG quality (0-100)\n");
> +-    printf("-r, --get-control ctrl          Get control 'ctrl'\n");
> +-    printf("-R, --realtime=[priority]       Enable realtime RR 
> scheduling\n");
> +-    printf("-s, --size WxH                  Set the frame size\n");
> +-    printf("-t, --time-per-frame num/denom  Set the time per frame (eg.
> 1/25 = 25 fps)\n");
> +-    printf("-u, --userptr                   Use the user pointers
> streaming method\n");
> +-    printf("-w, --set-control 'ctrl value'  Set control 'ctrl' to 
> 'value'\n");
> +-    printf("    --enum-formats              Enumerate formats\n");
> +-    printf("    --enum-inputs               Enumerate inputs\n");
> +-    printf("    --fd                        Use a numeric file descriptor 
> insted of a
> device\n");
> +-    printf("    --field                     Interlaced format field 
> order\n");
> +-    printf("    --no-query                  Don't query capabilities on
> open\n");
> +-    printf("    --offset                    User pointer buffer offset
> from page start\n");
> +-    printf("    --requeue-last              Requeue the last buffers before
> streamoff\n");
> +-    printf("    --timestamp-source          Set timestamp source on
> output buffers [eof, soe]\n");
> +-    printf("    --skip n                    Skip the first n frames\n");
> +-    printf("    --sleep-forever             Sleep forever after configuring
> the device\n");
> +-    printf("    --stride value              Line stride in bytes\n");
> ++    fprintf(stderr, "Usage: %s [options] device\n", argv0);
> ++    fprintf(stderr, "Supported options:\n");
> ++    fprintf(stderr, "-B, --buffer-type              Buffer type 
> (\"capture\",
> \"output\",\n");
> ++    fprintf(stderr, "                                \"capture-mplane\" or 
> \"output-
> mplane\")\n");
> ++    fprintf(stderr, "-c, --capture[=nframes]                Capture 
> frames\n");
> ++    fprintf(stderr, "-C, --check-overrun            Verify dequeued
> frames for buffer overrun\n");
> ++    fprintf(stderr, "-d, --delay                    Delay (in ms) before
> requeuing buffers\n");
> ++    fprintf(stderr, "-f, --format format            Set the video
> format\n");
> ++    fprintf(stderr, "-F, --file[=name]              Read/write frames 
> from/to
> disk\n");
> ++    fprintf(stderr, "\tFor video capture devices, the first '#' character in
> the file name is\n");
> ++    fprintf(stderr, "\texpanded to the frame sequence number. The
> default file name is\n");
> ++    fprintf(stderr, "\t'frame-#.bin'.\n");
> ++    fprintf(stderr, "-h, --help                     Show this help
> screen\n");
> ++    fprintf(stderr, "-i, --input input              Select the video 
> input\n");
> ++    fprintf(stderr, "-I, --fill-frames              Fill frames with check 
> pattern
> before queuing them\n");
> ++    fprintf(stderr, "-l, --list-controls            List available 
> controls\n");
> ++    fprintf(stderr, "-n, --nbufs n                  Set the number of
> video buffers\n");
> ++    fprintf(stderr, "-p, --pause                    Pause before starting
> the video stream\n");
> ++    fprintf(stderr, "-q, --quality n                        MJPEG quality 
> (0-
> 100)\n");
> ++    fprintf(stderr, "-r, --get-control ctrl         Get control 'ctrl'\n");
> ++    fprintf(stderr, "-R, --realtime=[priority]      Enable realtime RR
> scheduling\n");
> ++    fprintf(stderr, "-s, --size WxH                 Set the frame size\n");
> ++    fprintf(stderr, "-t, --time-per-frame num/denom Set the time per
> frame (eg. 1/25 = 25 fps)\n");
> ++    fprintf(stderr, "-u, --userptr                  Use the user pointers
> streaming method\n");
> ++    fprintf(stderr, "-w, --set-control 'ctrl value' Set control 'ctrl' to
> 'value'\n");
> ++    fprintf(stderr, "    --enum-formats             Enumerate
> formats\n");
> ++    fprintf(stderr, "    --enum-inputs              Enumerate inputs\n");
> ++    fprintf(stderr, "    --fd                        Use a numeric file 
> descriptor
> insted of a device\n");
> ++    fprintf(stderr, "    --field                    Interlaced format field
> order\n");
> ++    fprintf(stderr, "    --no-query                 Don't query
> capabilities on open\n");
> ++    fprintf(stderr, "    --offset                   User pointer buffer
> offset from page start\n");
> ++    fprintf(stderr, "    --requeue-last             Requeue the last buffers
> before streamoff\n");
> ++    fprintf(stderr, "    --timestamp-source         Set timestamp source
> on output buffers [eof, soe]\n");
> ++    fprintf(stderr, "    --skip n                   Skip the first n
> frames\n");
> ++    fprintf(stderr, "    --sleep-forever            Sleep forever after
> configuring the device\n");
> ++    fprintf(stderr, "    --stride value             Line stride in 
> bytes\n");
> + }
> +
> + #define OPT_ENUM_FORMATS    256
> +@@ -1665,6 +1682,7 @@ static void usage(const char *argv0)
> + #define OPT_FD                      264
> + #define OPT_TSTAMP_SRC              265
> + #define OPT_FIELD           266
> ++#define OPT_STDOUT          267
> +
> + static struct option opts[] = {
> +     {"buffer-type", 1, 0, 'B'},
> +@@ -1677,6 +1695,7 @@ static struct option opts[] = {
> +     {"field", 1, 0, OPT_FIELD},
> +     {"file", 2, 0, 'F'},
> +     {"fill-frames", 0, 0, 'I'},
> ++    {"stdout", 0, 0, OPT_STDOUT},
> +     {"format", 1, 0, 'f'},
> +     {"help", 0, 0, 'h'},
> +     {"input", 1, 0, 'i'},
> +@@ -1717,7 +1736,8 @@ int main(int argc, char *argv[])
> +     int do_list_controls = 0, do_get_control = 0, do_set_control = 0;
> +     int do_sleep_forever = 0, do_requeue_last = 0;
> +     int do_rt = 0;
> +-    int no_query = 0;
> ++    int no_query = 0;
> ++    int do_stdout = 0;
> +     char *endptr;
> +     int c;
> +
> +@@ -1755,7 +1775,7 @@ int main(int argc, char *argv[])
> +             case 'B':
> +                     ret = v4l2_buf_type_from_string(optarg);
> +                     if (ret == -1) {
> +-                            printf("Bad buffer type \"%s\"\n", optarg);
> ++                            fprintf(stderr, "Bad buffer type \"%s\"\n",
> optarg);
> +                             return 1;
> +                     }
> +                     video_set_buf_type(&dev, ret);
> +@@ -1775,7 +1795,7 @@ int main(int argc, char *argv[])
> +                     do_set_format = 1;
> +                     info = v4l2_format_by_name(optarg);
> +                     if (info == NULL) {
> +-                            printf("Unsupported video format '%s'\n",
> optarg);
> ++                            fprintf(stderr, "Unsupported video format
> '%s'\n", optarg);
> +                             return 1;
> +                     }
> +                     pixelformat = info->fourcc;
> +@@ -1812,7 +1832,7 @@ int main(int argc, char *argv[])
> +             case 'r':
> +                     ctrl_name = strtol(optarg, &endptr, 0);
> +                     if (*endptr != 0) {
> +-                            printf("Invalid control name '%s'\n", optarg);
> ++                            fprintf(stderr, "Invalid control name '%s'\n",
> optarg);
> +                             return 1;
> +                     }
> +                     do_get_control = 1;
> +@@ -1826,12 +1846,12 @@ int main(int argc, char *argv[])
> +                     do_set_format = 1;
> +                     width = strtol(optarg, &endptr, 10);
> +                     if (*endptr != 'x' || endptr == optarg) {
> +-                            printf("Invalid size '%s'\n", optarg);
> ++                            fprintf(stderr, "Invalid size '%s'\n", optarg);
> +                             return 1;
> +                     }
> +                     height = strtol(endptr + 1, &endptr, 10);
> +                     if (*endptr != 0) {
> +-                            printf("Invalid size '%s'\n", optarg);
> ++                            fprintf(stderr, "Invalid size '%s'\n", optarg);
> +                             return 1;
> +                     }
> +                     break;
> +@@ -1839,12 +1859,12 @@ int main(int argc, char *argv[])
> +                     do_set_time_per_frame = 1;
> +                     time_per_frame.numerator = strtol(optarg, &endptr,
> 10);
> +                     if (*endptr != '/' || endptr == optarg) {
> +-                            printf("Invalid time per frame '%s'\n", optarg);
> ++                            fprintf(stderr, "Invalid time per frame '%s'\n",
> optarg);
> +                             return 1;
> +                     }
> +                     time_per_frame.denominator = strtol(endptr + 1,
> &endptr, 10);
> +                     if (*endptr != 0) {
> +-                            printf("Invalid time per frame '%s'\n", optarg);
> ++                            fprintf(stderr, "Invalid time per frame '%s'\n",
> optarg);
> +                             return 1;
> +                     }
> +                     break;
> +@@ -1854,12 +1874,12 @@ int main(int argc, char *argv[])
> +             case 'w':
> +                     ctrl_name = strtol(optarg, &endptr, 0);
> +                     if (*endptr != ' ' || endptr == optarg) {
> +-                            printf("Invalid control name '%s'\n", optarg);
> ++                            fprintf(stderr, "Invalid control name '%s'\n",
> optarg);
> +                             return 1;
> +                     }
> +                     ctrl_value = strtol(endptr + 1, &endptr, 0);
> +                     if (*endptr != 0) {
> +-                            printf("Invalid control value '%s'\n", optarg);
> ++                            fprintf(stderr, "Invalid control value '%s'\n",
> optarg);
> +                             return 1;
> +                     }
> +                     do_set_control = 1;
> +@@ -1873,16 +1893,16 @@ int main(int argc, char *argv[])
> +             case OPT_FD:
> +                     ret = atoi(optarg);
> +                     if (ret < 0) {
> +-                            printf("Bad file descriptor %d\n", ret);
> ++                            fprintf(stderr, "Bad file descriptor %d\n", 
> ret);
> +                             return 1;
> +                     }
> +-                    printf("Using file descriptor %d\n", ret);
> ++                    fprintf(stderr, "Using file descriptor %d\n", ret);
> +                     video_set_fd(&dev, ret);
> +                     break;
> +             case OPT_FIELD:
> +                     field = v4l2_field_from_string(optarg);
> +                     if (field == (enum v4l2_field)-1) {
> +-                            printf("Invalid field order '%s'\n", optarg);
> ++                            fprintf(stderr, "Invalid field order '%s'\n",
> optarg);
> +                             return 1;
> +                     }
> +                     break;
> +@@ -1907,22 +1927,25 @@ int main(int argc, char *argv[])
> +                     } else if (!strcmp(optarg, "soe")) {
> +                             dev.buffer_output_flags |=
> V4L2_BUF_FLAG_TSTAMP_SRC_SOE;
> +                     } else {
> +-                            printf("Invalid timestamp source %s\n",
> optarg);
> ++                            fprintf(stderr, "Invalid timestamp source
> %s\n", optarg);
> +                             return 1;
> +                     }
> +                     break;
> +             case OPT_USERPTR_OFFSET:
> +                     userptr_offset = atoi(optarg);
> +                     break;
> ++            case OPT_STDOUT:
> ++                    do_stdout = 1;
> ++                    break;
> +             default:
> +-                    printf("Invalid option -%c\n", c);
> +-                    printf("Run %s -h for help.\n", argv[0]);
> ++                    fprintf(stderr, "Invalid option -%c\n", c);
> ++                    fprintf(stderr, "Run %s -h for help.\n", argv[0]);
> +                     return 1;
> +             }
> +     }
> +
> +     if ((fill_mode & BUFFER_FILL_PADDING) && memtype !=
> V4L2_MEMORY_USERPTR) {
> +-            printf("Buffer overrun can only be checked in USERPTR
> mode.\n");
> ++            fprintf(stderr, "Buffer overrun can only be checked in USERPTR
> ++mode.\n");
> +             return 1;
> +     }
> +
> +@@ -1959,7 +1982,7 @@ int main(int argc, char *argv[])
> +             ret = get_control(&dev, ctrl_name,
> +                               get_control_type(&dev, ctrl_name), &val);
> +             if (ret >= 0)
> +-                    printf("Control 0x%08x value %" PRId64 "\n",
> ctrl_name, val);
> ++                    fprintf(stderr, "Control 0x%08x value %" PRId64 "\n",
> ctrl_name,
> ++val);
> +     }
> +
> +     if (do_set_control)
> +@@ -1970,7 +1993,7 @@ int main(int argc, char *argv[])
> +             video_list_controls(&dev);
> +
> +     if (do_enum_formats) {
> +-            printf("- Available formats:\n");
> ++            fprintf(stderr, "- Available formats:\n");
> +             video_enum_formats(&dev,
> V4L2_BUF_TYPE_VIDEO_CAPTURE);
> +             video_enum_formats(&dev,
> V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
> +             video_enum_formats(&dev, V4L2_BUF_TYPE_VIDEO_OUTPUT);
> @@ -1979,14
> ++2002,14 @@ int main(int argc, char *argv[])
> +     }
> +
> +     if (do_enum_inputs) {
> +-            printf("- Available inputs:\n");
> ++            fprintf(stderr, "- Available inputs:\n");
> +             video_enum_inputs(&dev);
> +     }
> +
> +     if (do_set_input) {
> +             video_set_input(&dev, input);
> +             ret = video_get_input(&dev);
> +-            printf("Input %d selected\n", ret);
> ++            fprintf(stderr, "Input %d selected\n", ret);
> +     }
> +
> +     /* Set the video format. */
> +@@ -2028,7 +2051,7 @@ int main(int argc, char *argv[])
> +     }
> +
> +     if (do_pause) {
> +-            printf("Press enter to start capture\n");
> ++            fprintf(stderr, "Press enter to start capture\n");
> +             getchar();
> +     }
> +
> +@@ -2037,12 +2060,12 @@ int main(int argc, char *argv[])
> +             sched.sched_priority = rt_priority;
> +             ret = sched_setscheduler(0, SCHED_RR, &sched);
> +             if (ret < 0)
> +-                    printf("Failed to select RR scheduler: %s (%d)\n",
> ++                    fprintf(stderr, "Failed to select RR scheduler: %s
> (%d)\n",
> +                             strerror(errno), errno);
> +     }
> +
> +     if (video_do_capture(&dev, nframes, skip, delay, filename,
> +-                         do_requeue_last, fill_mode) < 0) {
> ++                         do_requeue_last, fill_mode, do_stdout) < 0) {
> +             video_close(&dev);
> +             return 1;
> +     }
> +--
> +1.7.9.5
> +
> diff --git a/meta-arago-extras/recipes-
> multimedia/v4l2apps/yavta_git.bbappend b/meta-arago-extras/recipes-
> multimedia/v4l2apps/yavta_git.bbappend
> new file mode 100644
> index 0000000..75721b8
> --- /dev/null
> +++ b/meta-arago-extras/recipes-multimedia/v4l2apps/yavta_git.bbappend
> @@ -0,0 +1,12 @@
> +# This change has been accepted upstream and will be available in the
> +next # stable 1.7 release of the Yocto Project after Daisy (version 1.6).
> +# The updated version of the patch in the yavta directory can also be #
> +removed at that point.
> +
> +SRCREV = "7e9f28bedc1ed3205fb5164f686aea96f27a0de2"
> +
> +PR_append = "-arago1"
[Franklin] This should be 0.
> +
> +CFLAGS += "-I${S}/include"
> +
> +FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
> --
> 1.7.9.5
> 
> _______________________________________________
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