vaapisink: Crashes on padded (non-alpha) RGB video with AMD card

Submitted by Alicia Boya García @ntrrgc

Link to original bug (#793889)

Description

$ gst-launch-1.0 multifilesrc location="/tmp/white.png" caps="image/png,framerate=(fraction)3/1" ! pngdec ! videoconvert ! identity silent=false ! vaapisink -v
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
Got context from element 'vaapisink0': gst.vaapi.Display=context, gst.vaapi.Display=(GstVaapiDisplay)"(GstVaapiDisplayGLX)\ vaapidisplayglx1";
/GstPipeline:pipeline0/GstIdentity:identity0: last-message = event ******* (identity0:sink) E (type: stream-start (10254), GstEventStreamStart, stream-id=(string)116c669c7f52880c9f1b179be1334a19, flags=(GstStreamFlags)GST_STREAM_FLAG_NONE, group-id=(uint)0;) 0x55bdcbc9a8f0
/GstPipeline:pipeline0/GstMultiFileSrc:multifilesrc0.GstPad:src: caps = image/png, width=(int)1, height=(int)1, framerate=(fraction)3/1
/GstPipeline:pipeline0/GstPngDec:pngdec0.GstPad:sink: caps = image/png, width=(int)1, height=(int)1, framerate=(fraction)3/1
/GstPipeline:pipeline0/GstPngDec:pngdec0.GstPad:src: caps = video/x-raw, format=(string)RGB, width=(int)320, height=(int)240, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, colorimetry=(string)sRGB, framerate=(fraction)3/1
/GstPipeline:pipeline0/GstVideoConvert:videoconvert0.GstPad:src: caps = video/x-raw, format=(string)BGRx, width=(int)320, height=(int)240, framerate=(fraction)3/1, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1
/GstPipeline:pipeline0/GstIdentity:identity0: last-message = event ******* (identity0:sink) E (type: caps (12814), GstEventCaps, caps=(GstCaps)"video/x-raw,\ format=(string)BGRx,\ width=(int)320,\ height=(int)240,\ framerate=(fraction)3/1,\ interlace-mode=(string)progressive,\ pixel-aspect-ratio=(fraction)1/1";) 0x7f5cd8005030
/GstPipeline:pipeline0/GstIdentity:identity0.GstPad:src: caps = video/x-raw, format=(string)BGRx, width=(int)320, height=(int)240, framerate=(fraction)3/1, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1
/GstPipeline:pipeline0/GstVaapiSink:vaapisink0.GstPad:sink: caps = video/x-raw, format=(string)BGRx, width=(int)320, height=(int)240, framerate=(fraction)3/1, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1
/GstPipeline:pipeline0/GstIdentity:identity0.GstPad:sink: caps = video/x-raw, format=(string)BGRx, width=(int)320, height=(int)240, framerate=(fraction)3/1, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1
/GstPipeline:pipeline0/GstVideoConvert:videoconvert0.GstPad:sink: caps = video/x-raw, format=(string)RGB, width=(int)320, height=(int)240, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, colorimetry=(string)sRGB, framerate=(fraction)3/1
/GstPipeline:pipeline0/GstIdentity:identity0: last-message = event ******* (identity0:sink) E (type: segment (17934), GstEventSegment, segment=(GstSegment)"GstSegment, flags=(GstSegmentFlags)GST_SEGMENT_FLAG_NONE, rate=(double)1, applied-rate=(double)1, format=(GstFormat)GST_FORMAT_TIME, base=(guint64)0, offset=(guint64)0, start=(guint64)0, stop=(guint64)18446744073709551615, time=(guint64)0, position=(guint64)0, duration=(guint64)18446744073709551615;";) 0x55bdcbc9aa40
/GstPipeline:pipeline0/GstIdentity:identity0: last-message = chain ******* (identity0:sink) (307200 bytes, dts: none, pts: 0:00:00.000000000, duration: 0:00:00.333333333, offset: -1, offset_end: -1, flags: 00000040 discont , meta: GstVideoMeta, GstVaapiVideoMeta) 0x7f5cd8009410
Caught SIGSEGV

#0  0x00007f5d1112d3db in poll () from /lib64/libc.so.6  
#1  0x00007f5d11a7ae99 in g_main_context_iterate.isra ()  
#2  0x00007f5d11a7b232 in g_main_loop_run () from /lib64/libglib-2.0.so.0  
#3  0x00007f5d121df543 in gst_bus_poll () from /lib64/libgstreamer-1.0.so.0  
#4  0x000055bdc9cc7aab in event_loop ()  
#5  0x000055bdc9cc6b8e in main ()  
Spinning.  Please run 'gdb gst-launch-1.0 46210' to continue debugging, Ctrl-C to quit, or Ctrl-\ to dump core.  
^Chandling interrupt.  
Interrupt: Stopping pipeline ...  
ERROR: pipeline doesn't want to preroll.  
Setting pipeline to NULL ...