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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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videoaggregator: Expose vmethods to set converters and prepare/clean frames
This gives more flexibility to the subclasses and permits to remove the GstVideoAggregatorClass->disable_frame_conversion ugly API. WARNING: This breaks the API as it removes the disable_frame_conversion field API: + GstVideoAggregatorClass->find_best_format + GstVideoAggregatorPadClass->set_format + GstVideoAggregatorPadClass->prepare_frame + GstVideoAggregatorPadClass->clean_frame - GstVideoAggregatorClass->disable_frame_conversion https://bugzilla.gnome.org/show_bug.cgi?id=740768
This commit is contained in:
Thibault Saunier
parent
a806b40135
commit
8cc214fdb8
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@ -87,11 +87,17 @@ static void
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gst_gl_mixer_pad_class_init (GstGLMixerPadClass * klass)
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{
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GObjectClass *gobject_class = (GObjectClass *) klass;
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GstVideoAggregatorPadClass *vaggpad_class =
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(GstVideoAggregatorPadClass *) klass;
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gobject_class->set_property = gst_gl_mixer_pad_set_property;
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gobject_class->get_property = gst_gl_mixer_pad_get_property;
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gobject_class->finalize = gst_gl_mixer_pad_finalize;
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vaggpad_class->set_info = NULL;
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vaggpad_class->prepare_frame = NULL;
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vaggpad_class->clean_frame = NULL;
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}
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static void
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@ -592,10 +598,10 @@ gst_gl_mixer_class_init (GstGLMixerClass * klass)
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agg_class->stop = gst_gl_mixer_stop;
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agg_class->start = gst_gl_mixer_start;
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videoaggregator_class->disable_frame_conversion = TRUE;
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videoaggregator_class->aggregate_frames = gst_gl_mixer_aggregate_frames;
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videoaggregator_class->get_output_buffer = gst_gl_mixer_get_output_buffer;
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videoaggregator_class->negotiated_caps = _negotiated_caps;
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videoaggregator_class->find_best_format = NULL;
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g_object_class_install_property (gobject_class, PROP_CONTEXT,
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g_param_spec_object ("context",
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@ -131,6 +131,63 @@ _flush_pad (GstAggregatorPad * aggpad, GstAggregator * aggregator)
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return TRUE;
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}
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static gboolean
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gst_video_aggregator_pad_set_info (GstVideoAggregatorPad * pad,
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GstVideoAggregator * vagg G_GNUC_UNUSED,
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GstVideoInfo * current_info, GstVideoInfo * wanted_info)
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{
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gchar *colorimetry, *best_colorimetry;
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const gchar *chroma, *best_chroma;
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if (!current_info->finfo)
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return TRUE;
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if (GST_VIDEO_INFO_FORMAT (current_info) == GST_VIDEO_FORMAT_UNKNOWN)
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return TRUE;
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if (pad->priv->convert)
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gst_video_converter_free (pad->priv->convert);
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pad->priv->convert = NULL;
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colorimetry = gst_video_colorimetry_to_string (&(current_info->colorimetry));
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chroma = gst_video_chroma_to_string (current_info->chroma_site);
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best_colorimetry =
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gst_video_colorimetry_to_string (&(wanted_info->colorimetry));
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best_chroma = gst_video_chroma_to_string (wanted_info->chroma_site);
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if (GST_VIDEO_INFO_FORMAT (wanted_info) !=
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GST_VIDEO_INFO_FORMAT (current_info)
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|| g_strcmp0 (colorimetry, best_colorimetry)
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|| g_strcmp0 (chroma, best_chroma)) {
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GstVideoInfo tmp_info = *current_info;
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tmp_info.finfo = wanted_info->finfo;
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tmp_info.chroma_site = wanted_info->chroma_site;
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tmp_info.colorimetry = wanted_info->colorimetry;
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GST_DEBUG_OBJECT (pad, "This pad will be converted from %d to %d",
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GST_VIDEO_INFO_FORMAT (current_info),
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GST_VIDEO_INFO_FORMAT (wanted_info));
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pad->priv->convert =
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gst_video_converter_new (current_info, &tmp_info, NULL);
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pad->need_conversion_update = TRUE;
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if (!pad->priv->convert) {
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g_free (colorimetry);
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g_free (best_colorimetry);
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GST_WARNING ("No path found for conversion");
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return FALSE;
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}
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} else {
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GST_DEBUG_OBJECT (pad, "This pad will not need conversion");
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}
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g_free (colorimetry);
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g_free (best_colorimetry);
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return TRUE;
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}
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static void
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gst_videoaggregator_pad_finalize (GObject * o)
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{
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@ -143,6 +200,79 @@ gst_videoaggregator_pad_finalize (GObject * o)
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G_OBJECT_CLASS (gst_videoaggregator_pad_parent_class)->finalize (o);
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}
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static gboolean
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gst_video_aggregator_pad_prepare_frame (GstVideoAggregatorPad * pad,
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GstVideoAggregator * vagg)
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{
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guint outsize;
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GstVideoFrame *converted_frame;
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GstBuffer *converted_buf = NULL;
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GstVideoFrame *frame = g_slice_new0 (GstVideoFrame);
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static GstAllocationParams params = { 0, 15, 0, 0, };
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if (!gst_video_frame_map (frame, &pad->buffer_vinfo, pad->buffer,
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GST_MAP_READ)) {
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GST_WARNING_OBJECT (vagg, "Could not map input buffer");
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}
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if (pad->priv->convert) {
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gint converted_size;
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converted_frame = g_slice_new0 (GstVideoFrame);
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/* We wait until here to set the conversion infos, in case vagg->info changed */
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if (pad->need_conversion_update) {
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pad->conversion_info = vagg->info;
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gst_video_info_set_format (&(pad->conversion_info),
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GST_VIDEO_INFO_FORMAT (&vagg->info), pad->info.width,
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pad->info.height);
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pad->need_conversion_update = FALSE;
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}
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converted_size = pad->conversion_info.size;
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outsize = GST_VIDEO_INFO_SIZE (&vagg->info);
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converted_size = converted_size > outsize ? converted_size : outsize;
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converted_buf = gst_buffer_new_allocate (NULL, converted_size, ¶ms);
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if (!gst_video_frame_map (converted_frame, &(pad->conversion_info),
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converted_buf, GST_MAP_READWRITE)) {
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GST_WARNING_OBJECT (vagg, "Could not map converted frame");
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g_slice_free (GstVideoFrame, converted_frame);
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gst_video_frame_unmap (frame);
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g_slice_free (GstVideoFrame, frame);
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return FALSE;
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}
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gst_video_converter_frame (pad->priv->convert, frame, converted_frame);
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pad->converted_buffer = converted_buf;
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gst_video_frame_unmap (frame);
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g_slice_free (GstVideoFrame, frame);
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} else {
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converted_frame = frame;
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}
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pad->aggregated_frame = converted_frame;
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return TRUE;
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}
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static void
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gst_video_aggregator_pad_clean_frame (GstVideoAggregatorPad * pad,
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GstVideoAggregator * vagg)
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{
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if (pad->aggregated_frame) {
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gst_video_frame_unmap (pad->aggregated_frame);
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g_slice_free (GstVideoFrame, pad->aggregated_frame);
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pad->aggregated_frame = NULL;
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}
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if (pad->converted_buffer) {
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gst_buffer_unref (pad->converted_buffer);
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pad->converted_buffer = NULL;
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}
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}
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static void
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gst_videoaggregator_pad_class_init (GstVideoAggregatorPadClass * klass)
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{
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@ -161,6 +291,10 @@ gst_videoaggregator_pad_class_init (GstVideoAggregatorPadClass * klass)
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g_type_class_add_private (klass, sizeof (GstVideoAggregatorPadPrivate));
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aggpadclass->flush = GST_DEBUG_FUNCPTR (_flush_pad);
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klass->set_info = GST_DEBUG_FUNCPTR (gst_video_aggregator_pad_set_info);
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klass->prepare_frame =
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GST_DEBUG_FUNCPTR (gst_video_aggregator_pad_prepare_frame);
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klass->clean_frame = GST_DEBUG_FUNCPTR (gst_video_aggregator_pad_clean_frame);
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}
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static void
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@ -268,8 +402,8 @@ G_DEFINE_ABSTRACT_TYPE_WITH_CODE (GstVideoAggregator, gst_videoaggregator,
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gst_videoaggregator_child_proxy_init));
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static void
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_find_best_video_format (GstVideoAggregator * vagg, GstCaps * downstream_caps,
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GstVideoInfo * best_info, GstVideoFormat * best_format,
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gst_videoaggreagator_find_best_format (GstVideoAggregator * vagg,
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GstCaps * downstream_caps, GstVideoInfo * best_info,
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gboolean * at_least_one_alpha)
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{
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GList *tmp;
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@ -326,11 +460,9 @@ _find_best_video_format (GstVideoAggregator * vagg, GstCaps * downstream_caps,
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/* If that pad is the first with alpha, set it as the new best format */
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if (!need_alpha && (pad->info.finfo->flags & GST_VIDEO_FORMAT_FLAG_ALPHA)) {
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need_alpha = TRUE;
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*best_format = GST_VIDEO_INFO_FORMAT (&pad->info);
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*best_info = pad->info;
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best_format_number = format_number;
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} else if (format_number > best_format_number) {
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*best_format = GST_VIDEO_INFO_FORMAT (&pad->info);
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*best_info = pad->info;
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best_format_number = format_number;
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}
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@ -349,17 +481,16 @@ static gboolean
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gst_videoaggregator_update_converters (GstVideoAggregator * vagg)
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{
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GList *tmp;
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GstVideoAggregatorPad *pad;
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GstVideoFormat best_format;
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GstVideoInfo best_info;
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gboolean at_least_one_alpha = FALSE;
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GstCaps *downstream_caps;
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gchar *best_colorimetry;
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const gchar *best_chroma;
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GstElementClass *klass = GST_ELEMENT_GET_CLASS (vagg);
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GstVideoAggregatorClass *vagg_klass = (GstVideoAggregatorClass *) klass;
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GstAggregator *agg = GST_AGGREGATOR (vagg);
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GstVideoAggregatorClass *vagg_class = GST_VIDEO_AGGREGATOR_GET_CLASS (vagg);
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GstVideoAggregatorPadClass *vaggpad_class = g_type_class_peek
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(GST_AGGREGATOR_GET_CLASS (vagg)->sinkpads_type);
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best_format = GST_VIDEO_FORMAT_UNKNOWN;
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gst_video_info_init (&best_info);
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@ -374,10 +505,13 @@ gst_videoaggregator_update_converters (GstVideoAggregator * vagg)
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}
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if (vagg_klass->disable_frame_conversion == FALSE)
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_find_best_video_format (vagg, downstream_caps, &best_info, &best_format,
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if (vagg_class->find_best_format) {
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vagg_class->find_best_format (vagg, downstream_caps, &best_info,
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&at_least_one_alpha);
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best_format = GST_VIDEO_INFO_FORMAT (&best_info);
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}
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if (best_format == GST_VIDEO_FORMAT_UNKNOWN) {
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downstream_caps = gst_caps_fixate (downstream_caps);
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gst_video_info_from_caps (&best_info, downstream_caps);
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@ -396,68 +530,25 @@ gst_videoaggregator_update_converters (GstVideoAggregator * vagg)
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vagg->info = best_info;
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/* short circuit */
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if (vagg_klass->disable_frame_conversion)
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return TRUE;
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best_colorimetry = gst_video_colorimetry_to_string (&(best_info.colorimetry));
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best_chroma = gst_video_chroma_to_string (best_info.chroma_site);
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GST_DEBUG_OBJECT (vagg,
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"The output format will now be : %d with colorimetry : %s and chroma : %s",
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best_format, best_colorimetry, best_chroma);
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"The output format will now be : %d with chroma : %s",
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best_format, gst_video_chroma_to_string (best_info.chroma_site));
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/* Then browse the sinks once more, setting or unsetting conversion if needed */
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GST_OBJECT_LOCK (vagg);
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for (tmp = GST_ELEMENT (vagg)->sinkpads; tmp; tmp = tmp->next) {
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gchar *colorimetry;
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const gchar *chroma;
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if (vaggpad_class->set_info) {
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GST_OBJECT_LOCK (vagg);
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/* Then browse the sinks once more, setting or unsetting conversion if needed */
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for (tmp = GST_ELEMENT (vagg)->sinkpads; tmp; tmp = tmp->next) {
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GstVideoAggregatorPad *pad = GST_VIDEO_AGGREGATOR_PAD (tmp->data);
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pad = tmp->data;
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if (!pad->info.finfo)
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continue;
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if (GST_VIDEO_INFO_FORMAT (&pad->info) == GST_VIDEO_FORMAT_UNKNOWN)
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continue;
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if (pad->priv->convert)
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gst_video_converter_free (pad->priv->convert);
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pad->priv->convert = NULL;
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colorimetry = gst_video_colorimetry_to_string (&(pad->info.colorimetry));
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chroma = gst_video_chroma_to_string (pad->info.chroma_site);
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if (best_format != GST_VIDEO_INFO_FORMAT (&pad->info) ||
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g_strcmp0 (colorimetry, best_colorimetry) ||
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g_strcmp0 (chroma, best_chroma)) {
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GstVideoInfo tmp_info = pad->info;
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tmp_info.finfo = best_info.finfo;
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tmp_info.chroma_site = best_info.chroma_site;
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tmp_info.colorimetry = best_info.colorimetry;
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GST_DEBUG_OBJECT (pad, "This pad will be converted from %d to %d",
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GST_VIDEO_INFO_FORMAT (&pad->info),
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GST_VIDEO_INFO_FORMAT (&best_info));
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pad->priv->convert =
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gst_video_converter_new (&pad->info, &tmp_info, NULL);
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pad->need_conversion_update = TRUE;
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if (!pad->priv->convert) {
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g_free (colorimetry);
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g_free (best_colorimetry);
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GST_WARNING ("No path found for conversion");
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if (!vaggpad_class->set_info (pad, vagg, &pad->info, &best_info)) {
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GST_OBJECT_UNLOCK (vagg);
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return FALSE;
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}
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} else {
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GST_DEBUG_OBJECT (pad, "This pad will not need conversion");
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}
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g_free (colorimetry);
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GST_OBJECT_UNLOCK (vagg);
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}
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GST_OBJECT_UNLOCK (vagg);
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g_free (best_colorimetry);
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return TRUE;
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}
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@ -990,7 +1081,8 @@ static gboolean
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prepare_frames (GstVideoAggregator * vagg, GstVideoAggregatorPad * pad)
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{
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GstAggregatorPad *bpad = GST_AGGREGATOR_PAD (pad);
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GstVideoAggregatorClass *vagg_klass = GST_VIDEO_AGGREGATOR_GET_CLASS (vagg);
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GstVideoAggregatorPadClass *vaggpad_class =
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GST_VIDEO_AGGREGATOR_PAD_GET_CLASS (pad);
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if (pad->buffer != NULL) {
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GstClockTime timestamp;
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@ -1007,56 +1099,8 @@ prepare_frames (GstVideoAggregator * vagg, GstVideoAggregatorPad * pad)
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if (GST_CLOCK_TIME_IS_VALID (stream_time))
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gst_object_sync_values (GST_OBJECT (pad), stream_time);
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if (!vagg_klass->disable_frame_conversion) {
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guint outsize;
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GstVideoFrame *converted_frame;
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GstBuffer *converted_buf = NULL;
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GstVideoFrame *frame = g_slice_new0 (GstVideoFrame);
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static GstAllocationParams params = { 0, 15, 0, 0, };
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if (!gst_video_frame_map (frame, &pad->buffer_vinfo, pad->buffer,
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GST_MAP_READ)) {
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GST_WARNING_OBJECT (vagg, "Could not map input buffer");
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}
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if (pad->priv->convert) {
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gint converted_size;
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converted_frame = g_slice_new0 (GstVideoFrame);
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/* We wait until here to set the conversion infos, in case vagg->info changed */
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if (pad->need_conversion_update) {
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pad->conversion_info = vagg->info;
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gst_video_info_set_format (&(pad->conversion_info),
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GST_VIDEO_INFO_FORMAT (&vagg->info), pad->info.width,
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pad->info.height);
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pad->need_conversion_update = FALSE;
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}
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converted_size = pad->conversion_info.size;
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outsize = GST_VIDEO_INFO_SIZE (&vagg->info);
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converted_size = converted_size > outsize ? converted_size : outsize;
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converted_buf = gst_buffer_new_allocate (NULL, converted_size, ¶ms);
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if (!gst_video_frame_map (converted_frame, &(pad->conversion_info),
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converted_buf, GST_MAP_READWRITE)) {
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GST_WARNING_OBJECT (vagg, "Could not map converted frame");
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g_slice_free (GstVideoFrame, converted_frame);
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gst_video_frame_unmap (frame);
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g_slice_free (GstVideoFrame, frame);
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return FALSE;
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}
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gst_video_converter_frame (pad->priv->convert, frame, converted_frame);
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pad->converted_buffer = converted_buf;
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gst_video_frame_unmap (frame);
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g_slice_free (GstVideoFrame, frame);
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} else {
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converted_frame = frame;
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}
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pad->aggregated_frame = converted_frame;
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if (vaggpad_class->prepare_frame) {
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return vaggpad_class->prepare_frame (pad, vagg);
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}
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}
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@ -1066,16 +1110,10 @@ prepare_frames (GstVideoAggregator * vagg, GstVideoAggregatorPad * pad)
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static gboolean
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clean_pad (GstVideoAggregator * vagg, GstVideoAggregatorPad * pad)
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{
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if (pad->aggregated_frame) {
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gst_video_frame_unmap (pad->aggregated_frame);
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g_slice_free (GstVideoFrame, pad->aggregated_frame);
|
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pad->aggregated_frame = NULL;
|
||||
}
|
||||
GstVideoAggregatorPadClass *vaggpad_class =
|
||||
GST_VIDEO_AGGREGATOR_PAD_GET_CLASS (pad);
|
||||
|
||||
if (pad->converted_buffer) {
|
||||
gst_buffer_unref (pad->converted_buffer);
|
||||
pad->converted_buffer = NULL;
|
||||
}
|
||||
vaggpad_class->clean_frame (pad, vagg);
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
|
@ -1088,6 +1126,8 @@ gst_videoaggregator_do_aggregate (GstVideoAggregator * vagg,
|
|||
GstFlowReturn ret = GST_FLOW_OK;
|
||||
GstElementClass *klass = GST_ELEMENT_GET_CLASS (vagg);
|
||||
GstVideoAggregatorClass *vagg_klass = (GstVideoAggregatorClass *) klass;
|
||||
GstVideoAggregatorPadClass *vaggpad_class = g_type_class_peek
|
||||
(GST_AGGREGATOR_CLASS (klass)->sinkpads_type);
|
||||
|
||||
g_assert (vagg_klass->aggregate_frames != NULL);
|
||||
g_assert (vagg_klass->get_output_buffer != NULL);
|
||||
|
|
@ -1108,8 +1148,10 @@ gst_videoaggregator_do_aggregate (GstVideoAggregator * vagg,
|
|||
|
||||
ret = vagg_klass->aggregate_frames (vagg, *outbuf);
|
||||
|
||||
gst_aggregator_iterate_sinkpads (GST_AGGREGATOR (vagg),
|
||||
(GstAggregatorPadForeachFunc) clean_pad, NULL);
|
||||
if (vaggpad_class->clean_frame) {
|
||||
gst_aggregator_iterate_sinkpads (GST_AGGREGATOR (vagg),
|
||||
(GstAggregatorPadForeachFunc) clean_pad, NULL);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
|
@ -1838,6 +1880,7 @@ gst_videoaggregator_class_init (GstVideoAggregatorClass * klass)
|
|||
agg_class->src_event = gst_videoaggregator_src_event;
|
||||
agg_class->src_query = gst_videoaggregator_src_query;
|
||||
|
||||
klass->find_best_format = gst_videoaggreagator_find_best_format;
|
||||
klass->get_output_buffer = gst_videoaggregator_get_output_buffer;
|
||||
|
||||
/* Register the pad class */
|
||||
|
|
|
|||
|
|
@ -30,8 +30,6 @@
|
|||
#include <gst/video/video.h>
|
||||
#include <gst/base/gstaggregator.h>
|
||||
|
||||
#include "gstvideoaggregatorpad.h"
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
||||
#define GST_TYPE_VIDEO_AGGREGATOR (gst_videoaggregator_get_type())
|
||||
|
|
@ -50,6 +48,8 @@ typedef struct _GstVideoAggregator GstVideoAggregator;
|
|||
typedef struct _GstVideoAggregatorClass GstVideoAggregatorClass;
|
||||
typedef struct _GstVideoAggregatorPrivate GstVideoAggregatorPrivate;
|
||||
|
||||
#include "gstvideoaggregatorpad.h"
|
||||
|
||||
/**
|
||||
* GstVideoAggregator:
|
||||
* @info: The #GstVideoInfo representing the currently set
|
||||
|
|
@ -70,9 +70,6 @@ struct _GstVideoAggregator
|
|||
|
||||
/**
|
||||
* GstVideoAggregatorClass:
|
||||
* @disable_frame_conversion: Optional.
|
||||
* Allows subclasses to disable the frame colorspace
|
||||
* conversion feature
|
||||
* @update_caps: Optional.
|
||||
* Lets subclasses update the #GstCaps representing
|
||||
* the src pad caps before usage. Return %NULL to indicate failure.
|
||||
|
|
@ -87,6 +84,8 @@ struct _GstVideoAggregator
|
|||
* the #aggregate_frames vmethod.
|
||||
* @negotiated_caps: Optional.
|
||||
* Notifies subclasses what caps format has been negotiated
|
||||
* @find_best_format: Optional.
|
||||
* Lets subclasses decide of the best common format to use.
|
||||
**/
|
||||
struct _GstVideoAggregatorClass
|
||||
{
|
||||
|
|
@ -94,8 +93,6 @@ struct _GstVideoAggregatorClass
|
|||
GstAggregatorClass parent_class;
|
||||
|
||||
/*< public >*/
|
||||
gboolean disable_frame_conversion;
|
||||
|
||||
GstCaps * (*update_caps) (GstVideoAggregator * videoaggregator,
|
||||
GstCaps * caps);
|
||||
GstFlowReturn (*aggregate_frames) (GstVideoAggregator * videoaggregator,
|
||||
|
|
@ -104,6 +101,10 @@ struct _GstVideoAggregatorClass
|
|||
GstBuffer ** outbuffer);
|
||||
gboolean (*negotiated_caps) (GstVideoAggregator * videoaggregator,
|
||||
GstCaps * caps);
|
||||
void (*find_best_format) (GstVideoAggregator * vagg,
|
||||
GstCaps * downstream_caps,
|
||||
GstVideoInfo * best_info,
|
||||
gboolean * at_least_one_alpha);
|
||||
/* < private > */
|
||||
gpointer _gst_reserved[GST_PADDING];
|
||||
};
|
||||
|
|
|
|||
Loading…
Reference in a new issue