waylandsink: consider buffer size when copying to wl shm pool

When the sink receives a buffer that is neither a wl_shm one nor a
dmabuf one, this buffer is copied to an internal wl_shm buffer before
being sent to the display.
In that case, the actual size of the received buffer (which may differ
from the one negotiated in the caps) must be used.

https://bugzilla.gnome.org/show_bug.cgi?id=777841

diff --git a/ext/wayland/gstwaylandsink.c b/ext/wayland/gstwaylandsink.c
index 4b39ae1f78b012743ce51c61e75ce03579872c47..85497f93329441434af960f385036e861dd7ecd8 100644 (file)
--- a/ext/wayland/gstwaylandsink.c
+++ b/ext/wayland/gstwaylandsink.c
@@ -625,6 +625,9 @@ gst_wayland_sink_show_frame (GstVideoSink * vsink, GstBuffer * buffer)
     GstMemory *mem;
     struct wl_buffer *wbuf = NULL;
 
+    /* FIXME check all memory when introducing DMA-Buf */
+    mem = gst_buffer_peek_memory (buffer, 0);
+
     /* update video info from video meta */
     vmeta = gst_buffer_get_video_meta (buffer);
     if (vmeta) {
@@ -634,14 +637,13 @@ gst_wayland_sink_show_frame (GstVideoSink * vsink, GstBuffer * buffer)
         sink->video_info.offset[i] = vmeta->offset[i];
         sink->video_info.stride[i] = vmeta->stride[i];
       }
+
+      sink->video_info.size = mem->size;
     }
 
     GST_LOG_OBJECT (sink, "buffer %p does not have a wl_buffer from our "
         "display, creating it", buffer);
 
-    /* FIXME check all memory when introducing DMA-Buf */
-    mem = gst_buffer_peek_memory (buffer, 0);
-
     if (gst_is_wl_shm_memory (mem)) {
       wbuf = gst_wl_shm_memory_construct_wl_buffer (mem, sink->display,
           &sink->video_info);
@@ -666,11 +668,11 @@ gst_wayland_sink_show_frame (GstVideoSink * vsink, GstBuffer * buffer)
       if (!gst_buffer_pool_is_active (sink->pool)) {
         GstStructure *config;
         GstCaps *caps;
-        guint size = sink->video_info.size;
 
         config = gst_buffer_pool_get_config (sink->pool);
-        gst_buffer_pool_config_get_params (config, &caps, &size, NULL, NULL);
-        gst_buffer_pool_config_set_params (config, caps, size, 2, 0);
+        gst_buffer_pool_config_get_params (config, &caps, NULL, NULL, NULL);
+        gst_buffer_pool_config_set_params (config, caps, sink->video_info.size,
+            2, 0);
 
         /* This is a video pool, it should not fail with basic setings */
         if (!gst_buffer_pool_set_config (sink->pool, config) ||