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eglimage: Fix exported DMABuf size

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All we know is the height and the stride, so make sure not to expose
the DMABuf larger then the size we know about.
This commit is contained in:
Nicolas Dufresne 2019-07-14 16:33:35 -04:00
parent 976e7e4e3d
commit ac0d19b72f
2 changed files with 9 additions and 7 deletions
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7
ext/gl/gstgldownloadelement.c
View file

@ -286,13 +286,14 @@ _create_cached_dmabuf_info (GstGLContext * context, gpointer data)
if (gst_egl_image_export_dmabuf (image, &fd, &stride, &offset)) {
GstGLDownloadElement *download = transfer->download;
struct DmabufInfo *info;
gsize maxsize;
gsize size;
gst_memory_get_sizes (GST_MEMORY_CAST (transfer->glmem), NULL, &maxsize);
size =
gst_gl_memory_get_texture_height (transfer->glmem) * stride + offset;
info = g_new0 (struct DmabufInfo, 1);
info->dmabuf =
gst_dmabuf_allocator_alloc (download->dmabuf_allocator, fd, maxsize);
gst_dmabuf_allocator_alloc (download->dmabuf_allocator, fd, size);
info->stride = stride;
info->offset = offset;

9
gst-libs/gst/gl/egl/gsteglimage.c
View file

@ -1029,10 +1029,6 @@ gst_egl_image_export_dmabuf (GstEGLImage * image, int *fd, gint * stride,
if (num_planes > 1)
return FALSE;
GST_DEBUG_OBJECT (image->context, "Export DMABuf with fourcc %"
GST_FOURCC_FORMAT " and modififers %" G_GUINT64_FORMAT,
GST_FOURCC_ARGS (fourcc), modifier);
/* FIXME We don't support modifiers */
if (modifier != DRM_FORMAT_MOD_LINEAR)
return FALSE;
@ -1041,6 +1037,11 @@ gst_egl_image_export_dmabuf (GstEGLImage * image, int *fd, gint * stride,
&egl_stride, &egl_offset))
return FALSE;
GST_DEBUG_OBJECT (image->context, "Export DMABuf with fourcc %"
GST_FOURCC_FORMAT ", modififers %" G_GUINT64_FORMAT
", stride %i and offset %i", GST_FOURCC_ARGS (fourcc), modifier,
egl_stride, egl_offset);
*fd = egl_fd;
*stride = egl_stride;
*offset = egl_offset;