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videoparse: use decide_allocation to check if downstream supports videometa

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If yes, we add them to each output buffers and we avoid frame copy.

https://bugzilla.gnome.org/show_bug.cgi?id=760270
This commit is contained in:
Aurélien Zanelli 2016-01-11 15:47:24 +01:00 committed by Nicolas Dufresne
parent 354f16a5ca
commit fd33314f03
2 changed files with 32 additions and 3 deletions
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34
gst/rawparse/gstvideoparse.c
View file

@ -39,6 +39,8 @@ static void gst_video_parse_get_property (GObject * object, guint prop_id,
static GstCaps *gst_video_parse_get_caps (GstRawParse * rp);
static void gst_video_parse_pre_push_buffer (GstRawParse * rp,
GstBuffer * buffer);
static void gst_video_parse_decide_allocation (GstRawParse * rp,
GstQuery * query);
static void gst_video_parse_update_info (GstVideoParse * vp);
static gboolean gst_video_parse_deserialize_int_array (const gchar * str,
@ -78,6 +80,7 @@ gst_video_parse_class_init (GstVideoParseClass * klass)
rp_class->get_caps = gst_video_parse_get_caps;
rp_class->pre_push_buffer = gst_video_parse_pre_push_buffer;
rp_class->decide_allocation = gst_video_parse_decide_allocation;
g_object_class_install_property (gobject_class, PROP_FORMAT,
g_param_spec_enum ("format", "Format", "Format of images in raw stream",
@ -536,9 +539,7 @@ gst_video_parse_pre_push_buffer (GstRawParse * rp, GstBuffer * buffer)
{
GstVideoParse *vp = GST_VIDEO_PARSE (rp);
/* for now, we don't add video meta to buffer, so if we have non standard
* stride and offset, just copy frame to new buffer */
if (vp->need_videometa) {
if (vp->do_copy) {
GstVideoInfo info;
GstBuffer *outbuf;
@ -554,6 +555,16 @@ gst_video_parse_pre_push_buffer (GstRawParse * rp, GstBuffer * buffer)
gst_buffer_replace_all_memory (buffer, gst_buffer_get_all_memory (outbuf));
gst_buffer_unref (outbuf);
} else {
GstVideoInfo *info = &vp->info;
GstVideoFrameFlags flags = GST_VIDEO_FRAME_FLAG_NONE;
if (vp->interlaced && vp->top_field_first)
flags = GST_VIDEO_FRAME_FLAG_TFF;
gst_buffer_add_video_meta_full (buffer, flags, GST_VIDEO_INFO_FORMAT (info),
GST_VIDEO_INFO_WIDTH (info), GST_VIDEO_INFO_HEIGHT (info),
GST_VIDEO_INFO_N_PLANES (info), info->offset, info->stride);
}
if (vp->interlaced) {
@ -564,3 +575,20 @@ gst_video_parse_pre_push_buffer (GstRawParse * rp, GstBuffer * buffer)
}
}
}
static void
gst_video_parse_decide_allocation (GstRawParse * rp, GstQuery * query)
{
GstVideoParse *vp = GST_VIDEO_PARSE (rp);
gboolean has_videometa;
has_videometa = gst_query_find_allocation_meta (query,
GST_VIDEO_META_API_TYPE, NULL);
/* no need to copy if downstream supports videometa or if we don't need
* them */
if (has_videometa || !vp->need_videometa)
return;
vp->do_copy = TRUE;
}

1
gst/rawparse/gstvideoparse.h
View file

@ -49,6 +49,7 @@ struct _GstVideoParse
GstRawParse parent;
GstVideoInfo info;
gboolean do_copy;
gboolean need_videometa;
gboolean stride_set;
gboolean offset_set;