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glmixer: Move frame/texture mapping/unmapping into prepare/clean_frame

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Previously we assumed that the texture ID is going to be valid even
after unmapping the frame, as it was immediately unmapped before even
being used. Now we only unmap once we're done with the texture.
This commit is contained in:
Sebastian Dröge 2018-05-05 12:16:35 +02:00
parent 8b231d502c
commit 404b802846
1 changed files with 59 additions and 44 deletions
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103
ext/gl/gstglmixer.c
View file

@ -38,6 +38,10 @@ static void gst_gl_mixer_pad_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_gl_mixer_pad_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static gboolean gst_gl_mixer_pad_prepare_frame (GstVideoAggregatorPad * vpad,
GstVideoAggregator * vagg);
static void gst_gl_mixer_pad_clean_frame (GstVideoAggregatorPad * vpad,
GstVideoAggregator * vagg);
enum
{
@ -69,8 +73,8 @@ gst_gl_mixer_pad_class_init (GstGLMixerPadClass * klass)
gobject_class->get_property = gst_gl_mixer_pad_get_property;
vaggpad_class->set_info = NULL;
vaggpad_class->prepare_frame = NULL;
vaggpad_class->clean_frame = NULL;
vaggpad_class->prepare_frame = gst_gl_mixer_pad_prepare_frame;
vaggpad_class->clean_frame = gst_gl_mixer_pad_clean_frame;
}
static void
@ -95,6 +99,59 @@ gst_gl_mixer_pad_set_property (GObject * object, guint prop_id,
}
}
static gboolean
gst_gl_mixer_pad_prepare_frame (GstVideoAggregatorPad * vpad,
GstVideoAggregator * vagg)
{
GstGLMixerPad *pad = GST_GL_MIXER_PAD (vpad);
GstGLMixer *mix = GST_GL_MIXER (vagg);
pad->current_texture = 0;
vpad->aggregated_frame = NULL;
if (vpad->buffer != NULL) {
GstVideoInfo gl_info;
GstVideoFrame aggregated_frame;
GstGLSyncMeta *sync_meta;
gst_video_info_set_format (&gl_info,
GST_VIDEO_FORMAT_RGBA,
GST_VIDEO_INFO_WIDTH (&vpad->info),
GST_VIDEO_INFO_HEIGHT (&vpad->info));
sync_meta = gst_buffer_get_gl_sync_meta (vpad->buffer);
if (sync_meta)
gst_gl_sync_meta_wait (sync_meta, GST_GL_BASE_MIXER (mix)->context);
if (!gst_video_frame_map (&aggregated_frame, &gl_info, vpad->buffer,
GST_MAP_READ | GST_MAP_GL)) {
GST_ERROR_OBJECT (pad, "Failed to map input frame");
return FALSE;
}
pad->current_texture = *(guint *) aggregated_frame.data[0];
vpad->aggregated_frame = g_slice_new0 (GstVideoFrame);
*vpad->aggregated_frame = aggregated_frame;
}
return TRUE;
}
static void
gst_gl_mixer_pad_clean_frame (GstVideoAggregatorPad * vpad,
GstVideoAggregator * vagg)
{
GstGLMixerPad *pad = GST_GL_MIXER_PAD (vpad);
pad->current_texture = 0;
if (vpad->aggregated_frame) {
gst_video_frame_unmap (vpad->aggregated_frame);
g_slice_free (GstVideoFrame, vpad->aggregated_frame);
vpad->aggregated_frame = NULL;
}
}
static gboolean
_negotiated_caps (GstAggregator * agg, GstCaps * caps)
{
@ -561,42 +618,6 @@ context_error:
}
}
static gboolean
gst_gl_mixer_upload_frames (GstElement * element, GstPad * sink_pad,
gpointer user_data)
{
GstVideoAggregatorPad *vaggpad = GST_VIDEO_AGGREGATOR_PAD (sink_pad);
GstGLMixerPad *pad = GST_GL_MIXER_PAD (sink_pad);
GstGLMixer *mix = GST_GL_MIXER (element);
pad->current_texture = 0;
if (vaggpad->buffer != NULL) {
GstVideoInfo gl_info;
GstVideoFrame gl_frame;
GstGLSyncMeta *sync_meta;
gst_video_info_set_format (&gl_info,
GST_VIDEO_FORMAT_RGBA,
GST_VIDEO_INFO_WIDTH (&vaggpad->info),
GST_VIDEO_INFO_HEIGHT (&vaggpad->info));
sync_meta = gst_buffer_get_gl_sync_meta (vaggpad->buffer);
if (sync_meta)
gst_gl_sync_meta_wait (sync_meta, GST_GL_BASE_MIXER (mix)->context);
if (!gst_video_frame_map (&gl_frame, &gl_info, vaggpad->buffer,
GST_MAP_READ | GST_MAP_GL)) {
GST_ERROR_OBJECT (pad, "Failed to map input frame");
return FALSE;
}
pad->current_texture = *(guint *) gl_frame.data[0];
gst_video_frame_unmap (&gl_frame);
}
return TRUE;
}
gboolean
gst_gl_mixer_process_textures (GstGLMixer * mix, GstBuffer * outbuf)
{
@ -616,12 +637,6 @@ gst_gl_mixer_process_textures (GstGLMixer * mix, GstBuffer * outbuf)
out_tex = (GstGLMemory *) out_frame.map[0].memory;
if (!gst_element_foreach_sink_pad (GST_ELEMENT_CAST (mix),
gst_gl_mixer_upload_frames, NULL)) {
res = FALSE;
goto out;
}
g_mutex_lock (&priv->gl_resource_lock);
if (!priv->gl_resource_ready)
g_cond_wait (&priv->gl_resource_cond, &priv->gl_resource_lock);