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videopool: ensure allocation alignment is consistent with video alignment requirements

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Make sure GstAllocationParams alignment is not less than
any alignment requirement specified via GstVideoAlignment.

https://bugzilla.gnome.org/show_bug.cgi?id=754120
This commit is contained in:
Tim-Philipp Müller 2015-09-11 23:36:47 +01:00
parent dab39bf42b
commit 8b96b52a62
1 changed files with 20 additions and 1 deletions
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21
gst-libs/gst/video/gstvideopool.c
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@ -173,10 +173,29 @@ video_buffer_pool_set_config (GstBufferPool * pool, GstStructure * config)
GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
if (priv->need_alignment && priv->add_videometa) {
/* get an apply the alignment to the info */
guint max_align, n;
gst_buffer_pool_config_get_video_alignment (config, &priv->video_align);
/* ensure GstAllocationParams alignment is compatible with video alignment */
max_align = priv->params.align;
for (n = 0; n < GST_VIDEO_MAX_PLANES; ++n)
max_align |= priv->video_align.stride_align[n];
for (n = 0; n < GST_VIDEO_MAX_PLANES; ++n)
priv->video_align.stride_align[n] = max_align;
/* apply the alignment to the info */
gst_video_info_align (&info, &priv->video_align);
gst_buffer_pool_config_set_video_alignment (config, &priv->video_align);
if (priv->params.align < max_align) {
GST_WARNING_OBJECT (pool, "allocation params alignment %u is smaller "
"than the max specified video stride alignment %u, fixing",
(guint) priv->params.align, max_align);
priv->params.align = max_align;
gst_buffer_pool_config_set_allocator (config, allocator, &priv->params);
}
}
priv->info = info;
info.size = MAX (size, info.size);