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videomixer: fix warnings when using transparent background

Browse source 
gst_video_frame_map() increases the refcount, which makes
the buffer not writable any more technically, so calling
gst_buffer_memset() on it will cause nasty warnings.

Unit test disabled because it very rarely (for me)
fails, possibly negotiation-related.

https://bugzilla.gnome.org/show_bug.cgi?id=684398
This commit is contained in:
Tim-Philipp Müller 2012-09-25 21:21:15 +01:00
parent 03e5376827
commit 626e0258e3
2 changed files with 32 additions and 3 deletions
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9
gst/videomixer/videomixer2.c
View file

@ -836,10 +836,17 @@ gst_videomixer2_blend_buffers (GstVideoMixer2 * mix,
mix->fill_color (&outframe, 240, 128, 128); mix->fill_color (&outframe, 240, 128, 128);
break; break;
case VIDEO_MIXER2_BACKGROUND_TRANSPARENT: case VIDEO_MIXER2_BACKGROUND_TRANSPARENT:
gst_buffer_memset (*outbuf, 0, 0, outsize); {
guint i, num_maps;
num_maps = (outframe.meta) ? GST_VIDEO_FRAME_N_PLANES (&outframe) : 1;
for (i = 0; i < num_maps; ++i)
memset (outframe.map[i].data, 0, outframe.map[i].size);
/* use overlay to keep background transparent */ /* use overlay to keep background transparent */
composite = mix->overlay; composite = mix->overlay;
break; break;
}
} }
for (l = mix->sinkpads; l; l = l->next) { for (l = mix->sinkpads; l; l = l->next) {

26
tests/check/pipelines/simple-launch-lines.c
View file

@ -220,7 +220,8 @@ GST_START_TEST (test_rtp_payloaders)
/*s = FAKESRC " ! ! rtpsv3vdepay ! " FAKESINK; */ /*s = FAKESRC " ! ! rtpsv3vdepay ! " FAKESINK; */
} }
GST_END_TEST GST_END_TEST;
GST_START_TEST (test_video_encoders_decoders) GST_START_TEST (test_video_encoders_decoders)
{ {
const gchar *s; const gchar *s;
@ -253,7 +254,26 @@ GST_START_TEST (test_video_encoders_decoders)
} }
} }
GST_END_TEST GST_END_TEST;
#define VIDEOMIXER_PIPELINE \
"videomixer name=mix background=transparent ! fakesink " \
"videotestsrc num-buffers=50 ! " \
" video/x-raw,format=RGBA, width=200,height=200,framerate=10/1 ! " \
" videoconvert ! mix.sink_1 " \
"videotestsrc num-buffers=50 pattern=smpte ! " \
" video/x-raw,format=RGBA, width=720,height=480,framerate=10/1 ! " \
" videoconvert ! mix.sink_0 "
GST_START_TEST (test_videomixer)
{
run_pipeline (setup_pipeline (VIDEOMIXER_PIPELINE), VIDEOMIXER_PIPELINE,
GST_MESSAGE_ANY & ~(GST_MESSAGE_ERROR | GST_MESSAGE_WARNING),
GST_MESSAGE_UNKNOWN, GST_STATE_PLAYING);
}
GST_END_TEST;
#endif /* #ifndef GST_DISABLE_PARSE */ #endif /* #ifndef GST_DISABLE_PARSE */
static Suite * static Suite *
simple_launch_lines_suite (void) simple_launch_lines_suite (void)
@ -268,6 +288,8 @@ simple_launch_lines_suite (void)
#ifndef GST_DISABLE_PARSE #ifndef GST_DISABLE_PARSE
tcase_add_test (tc_chain, test_rtp_payloaders); tcase_add_test (tc_chain, test_rtp_payloaders);
tcase_add_test (tc_chain, test_video_encoders_decoders); tcase_add_test (tc_chain, test_video_encoders_decoders);
/* FIXME: very rarely fails, maybe because of negotiation issues? */
tcase_skip_broken_test (tc_chain, test_videomixer);
#endif #endif
return s; return s;
} }