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qmlglsrc: Unmap buffer before adding sync meta

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Adding a sync meta to a GstBuffer requires that it
be writable. Mapping the buffer with the video frame API
holds an extra ref on the buffer, so unmap before
trying to modify it.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3622>
This commit is contained in:
Jan Schmidt 2022-12-21 02:32:41 +11:00 committed by Tim-Philipp Müller
parent d43ef0165e
commit 64ec73f313
1 changed files with 10 additions and 4 deletions
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14
subprojects/gst-plugins-good/ext/qt/qtwindow.cc
View file

@ -236,6 +236,9 @@ QtGLWindow::afterRendering()
gl->CopyTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA, 0, 0, width, height, 0);
}
gl->BindFramebuffer (GL_FRAMEBUFFER, 0);
gst_video_frame_unmap (&gl_frame);
if (this->priv->context) {
sync_meta = gst_buffer_get_gl_sync_meta (this->priv->buffer);
if (!sync_meta) {
@ -246,16 +249,19 @@ QtGLWindow::afterRendering()
GST_DEBUG ("rendering finished");
errors:
gl->BindFramebuffer (GL_FRAMEBUFFER, 0);
gst_video_frame_unmap (&gl_frame);
done:
gst_gl_context_activate (context, FALSE);
this->priv->result = ret;
this->priv->updated = TRUE;
g_cond_signal (&this->priv->update_cond);
g_mutex_unlock (&this->priv->lock);
return;
errors:
gl->BindFramebuffer (GL_FRAMEBUFFER, 0);
gst_video_frame_unmap (&gl_frame);
goto done;
}
void