v4l2: Replace miss-use of crop meta in favour of proper offset

This moves away from copying information and store everything inside
the GstVideoInfo structure. The alignement exposed by v4l2 api
is now handled using proper offset.

sys/v4l2/gstv4l2bufferpool.c

@@ -353,11 +353,9 @@ gst_v4l2_buffer_pool_alloc_buffer (GstBufferPool * bpool, GstBuffer ** buffer,
   GstBuffer *newbuf = NULL;
   GstV4l2Object *obj;
   GstVideoInfo *info;
-  GstVideoAlignment *align;
 
   obj = pool->obj;
   info = &obj->info;
-  align = &obj->align;
 
   switch (obj->mode) {
     case GST_V4L2_IO_RW:
@@ -394,71 +392,11 @@ gst_v4l2_buffer_pool_alloc_buffer (GstBufferPool * bpool, GstBuffer ** buffer,
   }
 
   /* add metadata to raw video buffers */
-  if (pool->add_videometa && info->finfo) {
-    const GstVideoFormatInfo *finfo = info->finfo;
-    gsize offset[GST_VIDEO_MAX_PLANES];
-    gint width, height, n_gst_planes, offs, i, stride[GST_VIDEO_MAX_PLANES];
-
-    width = GST_VIDEO_INFO_WIDTH (info);
-    height = GST_VIDEO_INFO_HEIGHT (info);
-
-    /* n_gst_planes is the number of planes
-     * (RGB: 1, YUY2: 1, NV12: 2, I420: 3)
-     * It's greater or equal than the number of v4l2 planes. */
-    n_gst_planes = GST_VIDEO_INFO_N_PLANES (info);
-
-    /* the basic are common between MPLANE mode and non MPLANE mode
-     * except a special case inside the loop at the end
-     */
-    offs = 0;
-    for (i = 0; i < n_gst_planes; i++) {
-      GST_DEBUG_OBJECT (pool, "adding video meta, bytesperline %d",
-          obj->bytesperline[i]);
-
-      offset[i] = offs;
-
-      if (GST_VIDEO_FORMAT_INFO_IS_TILED (finfo)) {
-        guint x_tiles, y_tiles, ws, hs, tile_height;
-
-        ws = GST_VIDEO_FORMAT_INFO_TILE_WS (finfo);
-        hs = GST_VIDEO_FORMAT_INFO_TILE_HS (finfo);
-        tile_height = 1 << hs;
-
-        x_tiles = obj->bytesperline[i] >> ws;
-        y_tiles = GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT (finfo, i,
-            GST_ROUND_UP_N (height, tile_height) >> hs);
-        stride[i] = GST_VIDEO_TILE_MAKE_STRIDE (x_tiles, y_tiles);
-      } else {
-        stride[i] = obj->bytesperline[i];
-      }
-
-      /* when using multiplanar mode and if there is more then one v4l
-       * plane for each gst plane
-       */
-      if (V4L2_TYPE_IS_MULTIPLANAR (obj->type) && group->n_mem > 1)
-        /* non_contiguous case here so we have to make sure that gst goes to the
-         * next plane (using default gstvideometa.c::default_map).
-         * And the next plane is after length bytes of the previous one from
-         * the gst buffer point of view. */
-        offs += gst_memory_get_sizes (group->mem[i], NULL, NULL);
-      else
-        offs += obj->bytesperline[i] *
-            GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT (finfo, i, height);
-    }
-
+  if (pool->add_videometa)
     gst_buffer_add_video_meta_full (newbuf, GST_VIDEO_FRAME_FLAG_NONE,
-        GST_VIDEO_INFO_FORMAT (info), width, height, n_gst_planes,
-        offset, stride);
-  }
-
-  if (pool->add_cropmeta) {
-    GstVideoCropMeta *crop;
-    crop = gst_buffer_add_video_crop_meta (newbuf);
-    crop->x = align->padding_left;
-    crop->y = align->padding_top;
-    crop->width = info->width;
-    crop->width = info->height;
-  }
+        GST_VIDEO_INFO_FORMAT (info), GST_VIDEO_INFO_WIDTH (info),
+        GST_VIDEO_INFO_HEIGHT (info), GST_VIDEO_INFO_N_PLANES (info),
+        info->offset, info->stride);
 
   *buffer = newbuf;
 
@@ -489,10 +427,6 @@ gst_v4l2_buffer_pool_set_config (GstBufferPool * bpool, GstStructure * config)
       gst_buffer_pool_config_has_option (config,
       GST_BUFFER_POOL_OPTION_VIDEO_META);
 
-  pool->add_cropmeta =
-      gst_buffer_pool_config_has_option (config,
-      GST_V4L2_BUFFER_POOL_OPTION_CROP_META);
-
   /* parse the config and keep around */
   if (!gst_buffer_pool_config_get_params (config, &caps, &size, &min_buffers,
           &max_buffers))
@@ -564,13 +498,6 @@ gst_v4l2_buffer_pool_set_config (GstBufferPool * bpool, GstStructure * config)
         GST_BUFFER_POOL_OPTION_VIDEO_META);
   }
 
-  if (!pool->add_cropmeta && obj->need_crop_meta) {
-    GST_INFO_OBJECT (pool, "adding needed crop meta");
-    updated = TRUE;
-    gst_buffer_pool_config_add_option (config,
-        GST_V4L2_BUFFER_POOL_OPTION_CROP_META);
-  }
-
   if (updated)
     gst_buffer_pool_config_set_params (config, caps, size, min_buffers,
         max_buffers);
@@ -1474,7 +1401,7 @@ gst_v4l2_buffer_pool_new (GstV4l2Object * obj, GstCaps * caps)
   gst_object_ref (obj->element);
 
   config = gst_buffer_pool_get_config (GST_BUFFER_POOL_CAST (pool));
-  gst_buffer_pool_config_set_params (config, caps, obj->sizeimage, 0, 0);
+  gst_buffer_pool_config_set_params (config, caps, obj->info.size, 0, 0);
   /* This will simply set a default config, but will not configure the pool
    * because min and max are not valid */
   gst_buffer_pool_set_config (GST_BUFFER_POOL_CAST (pool), config);
@@ -1498,7 +1425,7 @@ gst_v4l2_do_read (GstV4l2BufferPool * pool, GstBuffer * buf)
   GstMapInfo map;
   gint toread;
 
-  toread = obj->sizeimage;
+  toread = obj->info.size;
 
   GST_LOG_OBJECT (pool, "reading %d bytes into buffer %p", toread, buf);
 

sys/v4l2/gstv4l2bufferpool.h

@@ -44,8 +44,6 @@ G_BEGIN_DECLS
 #define GST_V4L2_BUFFER_POOL(obj)      (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_V4L2_BUFFER_POOL, GstV4l2BufferPool))
 #define GST_V4L2_BUFFER_POOL_CAST(obj) ((GstV4l2BufferPool*)(obj))
 
-#define GST_V4L2_BUFFER_POOL_OPTION_CROP_META "GstV4l2BufferPoolOptionCropMeta"
-
 struct _GstV4l2BufferPool
 {
   GstBufferPool parent;
@@ -59,8 +57,7 @@ struct _GstV4l2BufferPool
   GstBufferPool *other_pool;
   guint size;
 
-  gboolean add_videometa;
-  gboolean add_cropmeta;
+  gboolean add_videometa;    /* set if video meta should be added */
 
   guint num_buffers;         /* number of buffers we use */
   guint num_queued;          /* number of buffers queued in the driver */

sys/v4l2/gstv4l2object.c

@@ -2245,32 +2245,68 @@ no_supported_capture_method:
 }
 
 static void
-gst_v4l2_object_extrapolate_stride (GstV4l2Object * v4l2object,
-    struct v4l2_format *format, const GstVideoFormatInfo * finfo, guint stride)
+gst_v4l2_object_set_stride (GstVideoInfo * info, GstVideoAlignment * align,
+    gint plane, gint stride)
 {
-  gint i;
+  const GstVideoFormatInfo *finfo = info->finfo;
+
+  if (GST_VIDEO_FORMAT_INFO_IS_TILED (finfo)) {
+    gint x_tiles, y_tiles, ws, hs, tile_height, padded_height;
+
+
+    ws = GST_VIDEO_FORMAT_INFO_TILE_WS (finfo);
+    hs = GST_VIDEO_FORMAT_INFO_TILE_HS (finfo);
+    tile_height = 1 << hs;
+
+    padded_height = GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT (finfo, plane,
+        info->height + align->padding_top + align->padding_bottom);
+    padded_height = GST_ROUND_UP_N (padded_height, tile_height);
+
+    x_tiles = stride >> ws;
+    y_tiles = padded_height >> hs;
+    info->stride[plane] = GST_VIDEO_TILE_MAKE_STRIDE (x_tiles, y_tiles);
+  } else {
+    info->stride[plane] = stride;
+  }
+}
+
+static void
+gst_v4l2_object_extrapolate_info (GstV4l2Object * v4l2object,
+    GstVideoInfo * info, GstVideoAlignment * align, gint stride)
+{
+  const GstVideoFormatInfo *finfo = info->finfo;
+  gint i, estride, padded_height;
+  gsize offs = 0;
 
   g_return_if_fail (v4l2object->n_v4l2_planes == 1);
 
-  /* figure out the frame layout */
+  padded_height = info->height + align->padding_top + align->padding_bottom;
+
   for (i = 0; i < finfo->n_planes; i++) {
     switch (finfo->format) {
       case GST_VIDEO_FORMAT_NV12:
+      case GST_VIDEO_FORMAT_NV12_64Z32:
       case GST_VIDEO_FORMAT_NV21:
       case GST_VIDEO_FORMAT_NV16:
       case GST_VIDEO_FORMAT_NV24:
-        v4l2object->bytesperline[i] = (i == 0 ? 1 : 2) *
+        estride = (i == 0 ? 1 : 2) *
             GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (finfo, i, stride);
         break;
       default:
-        v4l2object->bytesperline[i] =
-            GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (finfo, i, stride);
+        estride = GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (finfo, i, stride);
         break;
     }
 
+    gst_v4l2_object_set_stride (info, align, i, estride);
+
+    info->offset[i] = offs;
+    offs += stride *
+        GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT (finfo, i, padded_height);
+
     GST_DEBUG_OBJECT (v4l2object->element,
-        "Extrapolated stride for plane %d from %d to %d", i, stride,
-        v4l2object->bytesperline[i]);
+        "Extrapolated for plane %d with base stride %d: "
+        "stride %d, offset %" G_GSIZE_FORMAT, i, stride, info->stride[i],
+        info->offset[i]);
   }
 }
 
@@ -2280,60 +2316,114 @@ gst_v4l2_object_save_format (GstV4l2Object * v4l2object,
     GstVideoInfo * info, GstVideoAlignment * align)
 {
   const GstVideoFormatInfo *finfo = info->finfo;
-  guint stride;
-  gint i;
+  gboolean standard_stride = TRUE;
+  gint stride, padded_width, padded_height, i;
+
+  if (GST_VIDEO_INFO_FORMAT (info) == GST_VIDEO_FORMAT_ENCODED) {
+    v4l2object->n_v4l2_planes = 1;
+    info->size = format->fmt.pix.sizeimage;
+    goto store_info;
+  }
+
+  /* adjust right padding */
+  if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type))
+    stride = format->fmt.pix_mp.plane_fmt[0].bytesperline;
+  else
+    stride = format->fmt.pix.bytesperline;
+
+  padded_width = stride / GST_VIDEO_FORMAT_INFO_PSTRIDE (finfo, 0);
+
+  if (padded_width < format->fmt.pix.width)
+    GST_WARNING_OBJECT (v4l2object->element,
+        "Driver bug detected, stride is too small for the width");
+
+  align->padding_right = padded_width - info->width - align->padding_left;
+
+  /* adjust bottom padding */
+  padded_height = format->fmt.pix.height;
+
+  if (GST_VIDEO_FORMAT_INFO_IS_TILED (finfo)) {
+    guint hs, tile_height;
+
+    hs = GST_VIDEO_FORMAT_INFO_TILE_HS (finfo);
+    tile_height = 1 << hs;
 
+    padded_height = GST_ROUND_UP_N (padded_height, tile_height);
+  }
+
+  align->padding_bottom = padded_height - info->height - align->padding_top;
+
+  /* setup the strides and offset */
   if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type)) {
+    struct v4l2_pix_format_mplane *pix_mp = &format->fmt.pix_mp;
+
     /* figure out the frame layout */
-    v4l2object->n_v4l2_planes = MAX (1, format->fmt.pix_mp.num_planes);
-    v4l2object->sizeimage = 0;
+    v4l2object->n_v4l2_planes = MAX (1, pix_mp->num_planes);
+    info->size = 0;
     for (i = 0; i < v4l2object->n_v4l2_planes; i++) {
-      v4l2object->bytesperline[i] =
-          format->fmt.pix_mp.plane_fmt[i].bytesperline;
-      v4l2object->sizeimage += format->fmt.pix_mp.plane_fmt[i].sizeimage;
+      stride = pix_mp->plane_fmt[i].bytesperline;
+
+      if (info->stride[i] != stride)
+        standard_stride = FALSE;
+
+      gst_v4l2_object_set_stride (info, align, i, stride);
+      info->offset[i] = info->size;
+      info->size += pix_mp->plane_fmt[i].sizeimage;
     }
 
     /* Extrapolate stride if planar format are being set in 1 v4l2 plane */
     if (v4l2object->n_v4l2_planes < finfo->n_planes) {
       stride = format->fmt.pix_mp.plane_fmt[0].bytesperline;
-      gst_v4l2_object_extrapolate_stride (v4l2object, format, finfo, stride);
+      gst_v4l2_object_extrapolate_info (v4l2object, info, align, stride);
     }
   } else {
     /* only one plane in non-MPLANE mode */
     v4l2object->n_v4l2_planes = 1;
-    v4l2object->sizeimage = format->fmt.pix.sizeimage;
+    info->size = format->fmt.pix.sizeimage;
     stride = format->fmt.pix.bytesperline;
-    gst_v4l2_object_extrapolate_stride (v4l2object, format, finfo, stride);
-  }
 
-  GST_DEBUG_OBJECT (v4l2object->element, "Got sizeimage %u",
-      v4l2object->sizeimage);
+    if (info->stride[0] != stride)
+      standard_stride = FALSE;
 
-  /* To avoid copies, we need crop_meta if top or left padding is set */
-  v4l2object->need_crop_meta =
-      ((align->padding_top + align->padding_left) != 0);
+    gst_v4l2_object_extrapolate_info (v4l2object, info, align, stride);
+  }
 
-  /* ... or video meta if bottom or right padding is set */
-  v4l2object->need_video_meta = (v4l2object->need_crop_meta ||
-      ((align->padding_bottom + align->padding_right) != 0));
+  /* adjust the offset to take into account left and top */
+  if (GST_VIDEO_FORMAT_INFO_IS_TILED (finfo)) {
+    if ((align->padding_left + align->padding_top) > 0)
+      GST_WARNING_OBJECT (v4l2object->element,
+          "Left and top padding is not permitted for tiled formats");
+  } else {
+    for (i = 0; i < finfo->n_planes; i++) {
+      gint vedge, hedge;
 
-  /* ... or also video meta if stride is non "standard" */
-  for (i = 0; i < v4l2object->n_v4l2_planes; i++) {
-    gint stride = GST_VIDEO_INFO_PLANE_STRIDE (info, i);
+      /* FIXME we assume plane as component as this is true for all supported
+       * format we support. */
 
-    if (GST_VIDEO_FORMAT_INFO_IS_TILED (info->finfo))
-      stride = GST_VIDEO_TILE_X_TILES (stride) <<
-          GST_VIDEO_FORMAT_INFO_TILE_WS (info->finfo);
+      hedge = GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (finfo, i, align->padding_left);
+      vedge = GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT (finfo, i, align->padding_top);
 
-    if (stride != v4l2object->bytesperline[i])
-      v4l2object->need_video_meta = TRUE;
+      info->offset[i] += (vedge * info->stride[i]) +
+          (hedge * GST_VIDEO_INFO_COMP_PSTRIDE (info, i));
+    }
   }
 
+store_info:
+  GST_DEBUG_OBJECT (v4l2object->element, "Got sizeimage %" G_GSIZE_FORMAT,
+      info->size);
+
+  /* to avoid copies we need video meta if top or left padding */
+  v4l2object->need_video_meta =
+      ((align->padding_top + align->padding_left) != 0);
+
+  /* ... or if stride is non "standard" */
+  if (!standard_stride)
+    v4l2object->need_video_meta = TRUE;
+
   /* ... or also video meta if we use multiple, non-contiguous, planes */
   if (v4l2object->n_v4l2_planes > 1)
     v4l2object->need_video_meta = TRUE;
 
-  gst_video_info_align (info, align);
   v4l2object->info = *info;
   v4l2object->align = *align;
   v4l2object->format = *format;
@@ -2622,11 +2712,9 @@ gst_v4l2_object_set_format (GstV4l2Object * v4l2object, GstCaps * caps)
   }
 
 done:
+  /* add boolean return, so we can fail on drivers bugs */
   gst_v4l2_object_save_format (v4l2object, fmtdesc, &format, &info, &align);
 
-  if (v4l2object->sizeimage < GST_VIDEO_INFO_SIZE (&info))
-    goto short_allocation;
-
   /* now configure the pool */
   if (!gst_v4l2_object_setup_pool (v4l2object, caps))
     goto pool_failed;
@@ -2711,14 +2799,6 @@ set_parm_failed:
         GST_ERROR_SYSTEM);
     goto done;
   }
-short_allocation:
-  {
-    GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
-        (_("Video device provided a image size that is too short.")),
-        ("Expected at least %" G_GSIZE_FORMAT " but got %u", info.size,
-            v4l2object->sizeimage));
-    return FALSE;
-  }
 pool_failed:
   {
     /* setup_pool already send the error */
@@ -2801,9 +2881,6 @@ gst_v4l2_object_acquire_format (GstV4l2Object * v4l2object, GstVideoInfo * info)
 
   gst_v4l2_object_save_format (v4l2object, fmtdesc, &fmt, info, &align);
 
-  if (v4l2object->sizeimage < GST_VIDEO_INFO_SIZE (info))
-    goto short_allocation;
-
   /* Shall we setup the pool ? */
 
   return TRUE;
@@ -2837,14 +2914,6 @@ unsupported_format:
             GST_FOURCC_ARGS (fmt.fmt.pix.pixelformat)));
     return FALSE;
   }
-short_allocation:
-  {
-    GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
-        (_("Video device provided a image size that is too short.")),
-        ("Expected at least %" G_GSIZE_FORMAT " but got %u", info->size,
-            v4l2object->sizeimage));
-    return FALSE;
-  }
 }
 
 gboolean
@@ -2995,7 +3064,7 @@ gst_v4l2_object_decide_allocation (GstV4l2Object * obj, GstQuery * query)
   GstStructure *config;
   guint size, min, max, own_min = 0;
   gboolean update;
-  gboolean has_video_meta, has_crop_meta;
+  gboolean has_video_meta;
   gboolean can_share_own_pool, pushing_from_our_pool = FALSE;
   struct v4l2_control ctl = { 0, };
 
@@ -3026,12 +3095,8 @@ gst_v4l2_object_decide_allocation (GstV4l2Object * obj, GstQuery * query)
 
   has_video_meta =
       gst_query_find_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
-  has_crop_meta =
-      gst_query_find_allocation_meta (query, GST_VIDEO_CROP_META_API_TYPE,
-      NULL);
 
-  can_share_own_pool = ((has_crop_meta || !obj->need_crop_meta) &&
-      (has_video_meta || !obj->need_video_meta));
+  can_share_own_pool = (has_video_meta || !obj->need_video_meta);
 
   /* select a pool */
   switch (obj->mode) {
@@ -3044,13 +3109,13 @@ gst_v4l2_object_decide_allocation (GstV4l2Object * obj, GstQuery * query)
         /* use the bigest size, when we use our own pool we can't really do any
          * other size than what the hardware gives us but for downstream pools
          * we can try */
-        size = MAX (size, obj->sizeimage);
+        size = MAX (size, obj->info.size);
       } else if (can_share_own_pool) {
         /* no downstream pool, use our own then */
         GST_DEBUG_OBJECT (obj->element,
             "read/write mode: no downstream pool, using our own");
         pool = gst_object_ref (obj->pool);
-        size = obj->sizeimage;
+        size = obj->info.size;
         pushing_from_our_pool = TRUE;
       }
       break;
@@ -3066,7 +3131,7 @@ gst_v4l2_object_decide_allocation (GstV4l2Object * obj, GstQuery * query)
       other_pool = pool;
       gst_object_unref (pool);
       pool = gst_object_ref (obj->pool);
-      size = obj->sizeimage;
+      size = obj->info.size;
       break;
 
     case GST_V4L2_IO_MMAP:
@@ -3077,7 +3142,7 @@ gst_v4l2_object_decide_allocation (GstV4l2Object * obj, GstQuery * query)
         if (pool)
           gst_object_unref (pool);
         pool = gst_object_ref (obj->pool);
-        size = obj->sizeimage;
+        size = obj->info.size;
         GST_DEBUG_OBJECT (obj->element,
             "streaming mode: using our own pool %" GST_PTR_FORMAT, pool);
         pushing_from_our_pool = TRUE;
@@ -3088,7 +3153,7 @@ gst_v4l2_object_decide_allocation (GstV4l2Object * obj, GstQuery * query)
       } else {
         GST_DEBUG_OBJECT (obj->element,
             "streaming mode: no usable pool, copying to generic pool");
-        size = MAX (size, obj->sizeimage);
+        size = MAX (size, obj->info.size);
       }
       break;
     case GST_V4L2_IO_AUTO:
@@ -3152,12 +3217,6 @@ gst_v4l2_object_decide_allocation (GstV4l2Object * obj, GstQuery * query)
         GST_BUFFER_POOL_OPTION_VIDEO_META);
   }
 
-  if (obj->need_crop_meta) {
-    GST_DEBUG_OBJECT (obj->element, "activate VideoCrop Meta");
-    gst_buffer_pool_config_add_option (config,
-        GST_V4L2_BUFFER_POOL_OPTION_CROP_META);
-  }
-
   gst_buffer_pool_config_set_params (config, caps, size, own_min, 0);
 
   GST_DEBUG_OBJECT (obj->element, "setting own pool config to %"
@@ -3256,7 +3315,7 @@ gst_v4l2_object_propose_allocation (GstV4l2Object * obj, GstQuery * query)
   gboolean need_pool;
 
   /* Set defaults allocation parameters */
-  size = obj->sizeimage;
+  size = obj->info.size;
   min = GST_V4L2_MIN_BUFFERS;
   max = VIDEO_MAX_FRAME;
 

sys/v4l2/gstv4l2object.h

@@ -102,7 +102,6 @@ struct _GstV4l2Object {
 
   /* Features */
   gboolean need_video_meta;
-  gboolean need_crop_meta;
   gboolean has_alpha_component;
 
   /* only used if the device supports MPLANE
@@ -111,8 +110,7 @@ struct _GstV4l2Object {
    */
   gint n_v4l2_planes;
 
-  guint32 bytesperline[GST_VIDEO_MAX_PLANES];
-  guint32 sizeimage;
+  /* We cache the frame duration if known */
   GstClockTime duration;
 
   /* if the MPLANE device support both contiguous and non contiguous

sys/v4l2/gstv4l2src.c

@@ -622,7 +622,7 @@ gst_v4l2src_create (GstPushSrc * src, GstBuffer ** buf)
   GstClockTime delay;
 
   ret = GST_BASE_SRC_CLASS (parent_class)->alloc (GST_BASE_SRC (src), 0,
-      obj->sizeimage, buf);
+      obj->info.size, buf);
 
   if (G_UNLIKELY (ret != GST_FLOW_OK))
     goto alloc_failed;

sys/v4l2/gstv4l2transform.c

@@ -463,7 +463,7 @@ gst_v4l2_transform_prepare_output_buffer (GstBaseTransform * trans,
   if (!gst_buffer_pool_is_active (pool)) {
     GstStructure *config = gst_buffer_pool_get_config (pool);
     gst_buffer_pool_config_set_params (config, self->incaps,
-        self->v4l2output->sizeimage, 2, 2);
+        self->v4l2output->info.size, 2, 2);
 
     /* There is no reason to refuse this config */
     if (!gst_buffer_pool_set_config (pool, config))

sys/v4l2/gstv4l2videodec.c

@@ -471,7 +471,7 @@ gst_v4l2_video_dec_handle_frame (GstVideoDecoder * decoder,
     if (!gst_buffer_pool_is_active (pool)) {
       GstStructure *config = gst_buffer_pool_get_config (pool);
       gst_buffer_pool_config_set_params (config, self->input_state->caps,
-          self->v4l2output->sizeimage, 2, 2);
+          self->v4l2output->info.size, 2, 2);
 
       /* There is no reason to refuse this config */
       if (!gst_buffer_pool_set_config (pool, config))