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gloverlaycompositor: Keep memory pointer alive

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Keep the composition memory pointer alive while it's being
wrapped inside a GstGLMemory object.

https://bugzilla.gnome.org/show_bug.cgi?id=745107
This commit is contained in:
Nicolas Dufresne 2015-07-22 15:56:34 -04:00 committed by Tim-Philipp Müller
parent 8884aeba87
commit df7bcb6ba7
1 changed files with 32 additions and 29 deletions
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61
gst-libs/gst/gl/gstgloverlaycompositor.c
View file

@ -187,7 +187,7 @@ gst_gl_composition_overlay_finalize (GObject * object)
if (overlay->gl_memory)
gst_memory_unref ((GstMemory *) overlay->gl_memory);
overlay->gl_memory = NULL;
if (overlay->context) {
gst_gl_context_thread_add (overlay->context,
gst_gl_composition_overlay_free_vertex_buffer, overlay);
@ -293,63 +293,66 @@ gst_gl_composition_overlay_new (GstGLContext * context,
return overlay;
}
static void
_video_frame_unmap_and_free (gpointer user_data)
{
GstVideoFrame *frame = user_data;
gst_video_frame_unmap (frame);
g_slice_free (GstVideoFrame, frame);
}
static void
gst_gl_composition_overlay_upload (GstGLCompositionOverlay * overlay,
GstBuffer * buf)
{
GstMapInfo info;
GstVideoMeta *vmeta;
GstGLMemory *comp_gl_memory = NULL;
gint stride;
GstBuffer *comp_buffer = NULL;
GstVideoMeta *meta;
GstVideoInfo text_info;
gpointer raw_overlay_data;
GstBuffer *overlay_buffer = NULL;
GstVideoInfo vinfo;
GstVideoMeta *vmeta;
GstVideoFrame *comp_frame;
GstVideoFrame gl_frame;
comp_buffer =
gst_video_overlay_rectangle_get_pixels_unscaled_argb (overlay->rectangle,
GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA);
comp_frame = g_slice_new (GstVideoFrame);
vmeta = gst_buffer_get_video_meta (comp_buffer);
gst_video_info_set_format (&vinfo, vmeta->format, vmeta->width,
vmeta->height);
vinfo.stride[0] = vmeta->stride[0];
if (gst_video_meta_map (vmeta, 0, &info, &raw_overlay_data, &stride,
GST_MAP_READ)) {
g_assert (raw_overlay_data);
meta = gst_buffer_get_video_meta (comp_buffer);
if (gst_video_frame_map (comp_frame, &vinfo, comp_buffer, GST_MAP_READ)) {
gst_gl_composition_overlay_add_transformation (overlay, buf);
gst_video_info_init (&text_info);
gst_video_info_set_format (&text_info, meta->format, meta->width,
meta->height);
text_info->stride[0] = stride;
comp_gl_memory =
gst_gl_memory_wrapped (overlay->context, &text_info, 0, NULL,
raw_overlay_data, NULL, NULL);
gst_gl_memory_wrapped (overlay->context, &comp_frame->info, 0, NULL,
comp_frame->data[0], comp_frame, _video_frame_unmap_and_free);
overlay_buffer = gst_buffer_new ();
gst_buffer_append_memory (overlay_buffer,
gst_memory_ref ((GstMemory *) comp_gl_memory));
gst_buffer_append_memory (overlay_buffer, (GstMemory *) comp_gl_memory);
if (!gst_video_frame_map (&gl_frame, &text_info, overlay_buffer,
if (!gst_video_frame_map (&gl_frame, &comp_frame->info, overlay_buffer,
GST_MAP_READ | GST_MAP_GL)) {
gst_buffer_unref (overlay_buffer);
gst_video_meta_unmap (vmeta, 0, &info);
_video_frame_unmap_and_free (comp_frame);
GST_WARNING_OBJECT (overlay, "Cannot upload overlay texture");
return;
}
gst_buffer_unref (overlay_buffer);
overlay->texture_id = comp_gl_memory->tex_id;
GST_DEBUG ("uploaded overlay texture %d", overlay->texture_id);
gst_video_frame_unmap (&gl_frame);
gst_memory_ref ((GstMemory *) comp_gl_memory);
overlay->gl_memory = comp_gl_memory;
overlay->texture_id = comp_gl_memory->tex_id;
gst_video_meta_unmap (vmeta, 0, &info);
gst_buffer_unref (overlay_buffer);
gst_video_frame_unmap (&gl_frame);
GST_DEBUG ("uploaded overlay texture %d", overlay->texture_id);
} else {
g_slice_free (GstVideoFrame, comp_frame);
}
}