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kmssink: support videooverlay interface
Implement videooverlay interface in kmssink, divided into two cases: when driver supports scale, then we do refresh in show_frame(); if not, send a reconfigure event to upstream and re-negotiate, using the new size. https://bugzilla.gnome.org/show_bug.cgi?id=784599
This commit is contained in:
Haihua Hu
Nicolas Dufresne
parent
ff9a4390cb
commit
b24bb73101
2 changed files with 172 additions and 14 deletions
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@ -43,6 +43,7 @@
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#endif
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#include <gst/video/video.h>
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#include <gst/video/videooverlay.h>
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#include <gst/allocators/gstdmabuf.h>
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#include <drm.h>
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@ -64,13 +65,18 @@ GST_DEBUG_CATEGORY_STATIC (gst_kms_sink_debug);
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GST_DEBUG_CATEGORY_STATIC (CAT_PERFORMANCE);
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#define GST_CAT_DEFAULT gst_kms_sink_debug
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static GstFlowReturn gst_kms_sink_show_frame (GstVideoSink * vsink,
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GstBuffer * buf);
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static void gst_kms_sink_video_overlay_init (GstVideoOverlayInterface * iface);
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static void gst_kms_sink_drain (GstKMSSink * self);
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#define parent_class gst_kms_sink_parent_class
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G_DEFINE_TYPE_WITH_CODE (GstKMSSink, gst_kms_sink, GST_TYPE_VIDEO_SINK,
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GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, GST_PLUGIN_NAME, 0,
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GST_PLUGIN_DESC);
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GST_DEBUG_CATEGORY_GET (CAT_PERFORMANCE, "GST_PERFORMANCE"));
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static void gst_kms_sink_drain (GstKMSSink * self);
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GST_DEBUG_CATEGORY_GET (CAT_PERFORMANCE, "GST_PERFORMANCE");
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G_IMPLEMENT_INTERFACE (GST_TYPE_VIDEO_OVERLAY,
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gst_kms_sink_video_overlay_init));
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enum
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{
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@ -85,6 +91,84 @@ enum
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static GParamSpec *g_properties[PROP_N] = { NULL, };
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static void
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gst_kms_sink_set_render_rectangle (GstVideoOverlay * overlay,
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gint x, gint y, gint width, gint height)
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{
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GstKMSSink *self = GST_KMS_SINK (overlay);
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if (width == -1 && height == -1) {
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x = 0;
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y = 0;
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width = self->hdisplay;
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height = self->vdisplay;
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}
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if (width <= 0 || height <= 0) {
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return;
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}
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GST_OBJECT_LOCK (self);
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if (self->can_scale) {
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self->render_rect.x = x;
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self->render_rect.y = y;
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self->render_rect.w = width;
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self->render_rect.h = height;
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} else {
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GstVideoRectangle src = { 0, };
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GstVideoRectangle dst = { 0, };
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GstVideoRectangle result;
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src.w = GST_VIDEO_INFO_WIDTH (&self->vinfo);
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src.h = GST_VIDEO_INFO_HEIGHT (&self->vinfo);
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dst.w = width;
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dst.h = height;
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if (src.w != dst.w || src.h != dst.h)
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self->reconfigure = TRUE;
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gst_video_sink_center_rect (src, dst, &result, TRUE);
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self->pending_rect.x = x + result.x;
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self->pending_rect.y = y + result.y;
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self->pending_rect.w = result.w;
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self->pending_rect.h = result.h;
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GST_DEBUG_OBJECT (self, "pending resize to (%d,%d)-(%dx%d)",
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self->pending_rect.x, self->pending_rect.y,
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self->pending_rect.w, self->pending_rect.h);
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}
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GST_OBJECT_UNLOCK (self);
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}
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static void
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gst_kms_sink_expose (GstVideoOverlay * overlay)
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{
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GstKMSSink *self = GST_KMS_SINK (overlay);
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if (!self->can_scale) {
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GST_OBJECT_LOCK (self);
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if (self->reconfigure) {
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GST_OBJECT_UNLOCK (self);
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gst_pad_push_event (GST_BASE_SINK_PAD (self),
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gst_event_new_reconfigure ());
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} else {
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/* size of the rectangle does not change, only the (x,y) position changes */
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self->render_rect = self->pending_rect;
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GST_OBJECT_UNLOCK (self);
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}
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}
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gst_kms_sink_show_frame (GST_VIDEO_SINK (self), NULL);
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}
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static void
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gst_kms_sink_video_overlay_init (GstVideoOverlayInterface * iface)
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{
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iface->expose = gst_kms_sink_expose;
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iface->set_render_rectangle = gst_kms_sink_set_render_rectangle;
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}
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static int
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kms_open (gchar ** driver)
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{
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@ -573,8 +657,10 @@ retry_find_plane:
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GST_INFO_OBJECT (self, "connector id = %d / crtc id = %d / plane id = %d",
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self->conn_id, self->crtc_id, self->plane_id);
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self->hdisplay = crtc->mode.hdisplay;
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self->vdisplay = crtc->mode.vdisplay;
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self->render_rect.x = 0;
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self->render_rect.y = 0;
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self->hdisplay = self->render_rect.w = crtc->mode.hdisplay;
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self->vdisplay = self->render_rect.h = crtc->mode.vdisplay;
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self->buffer_id = crtc->buffer_id;
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self->mm_width = conn->mmWidth;
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@ -719,13 +805,31 @@ gst_kms_sink_get_caps (GstBaseSink * bsink, GstCaps * filter)
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self = GST_KMS_SINK (bsink);
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caps = gst_kms_sink_get_allowed_caps (self);
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GST_OBJECT_LOCK (self);
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if (caps && self->reconfigure) {
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GstStructure *s0, *s1;
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guint dpy_par_n, dpy_par_d;
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gst_video_calculate_device_ratio (self->hdisplay, self->vdisplay,
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self->mm_width, self->mm_height, &dpy_par_n, &dpy_par_d);
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caps = gst_caps_make_writable (caps);
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s0 = gst_caps_get_structure (caps, 0);
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s1 = gst_structure_copy (gst_caps_get_structure (caps, 0));
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gst_structure_set (s0, "width", G_TYPE_INT, self->pending_rect.w,
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"height", G_TYPE_INT, self->pending_rect.h, NULL);
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gst_caps_append_structure (caps, s1);
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}
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GST_OBJECT_UNLOCK (self);
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if (caps && filter) {
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out_caps = gst_caps_intersect_full (caps, filter, GST_CAPS_INTERSECT_FIRST);
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gst_caps_unref (caps);
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} else {
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out_caps = caps;
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}
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return out_caps;
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}
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@ -787,8 +891,14 @@ gst_kms_sink_calculate_display_ratio (GstKMSSink * self, GstVideoInfo * vinfo)
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video_par_n = GST_VIDEO_INFO_PAR_N (vinfo);
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video_par_d = GST_VIDEO_INFO_PAR_D (vinfo);
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gst_video_calculate_device_ratio (self->hdisplay, self->vdisplay,
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self->mm_width, self->mm_height, &dpy_par_n, &dpy_par_d);
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if (self->can_scale) {
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gst_video_calculate_device_ratio (self->hdisplay, self->vdisplay,
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self->mm_width, self->mm_height, &dpy_par_n, &dpy_par_d);
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} else {
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GST_VIDEO_SINK_WIDTH (self) = video_width;
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GST_VIDEO_SINK_HEIGHT (self) = video_height;
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goto out;
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}
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if (!gst_video_calculate_display_ratio (&dar_n, &dar_d, video_width,
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video_height, video_par_n, video_par_d, dpy_par_n, dpy_par_d))
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@ -819,6 +929,8 @@ gst_kms_sink_calculate_display_ratio (GstKMSSink * self, GstVideoInfo * vinfo)
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gst_util_uint64_scale_int (video_height, dar_n, dar_d);
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GST_VIDEO_SINK_HEIGHT (self) = video_height;
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}
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out:
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GST_DEBUG_OBJECT (self, "scaling to %dx%d", GST_VIDEO_SINK_WIDTH (self),
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GST_VIDEO_SINK_HEIGHT (self));
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@ -868,6 +980,13 @@ gst_kms_sink_set_caps (GstBaseSink * bsink, GstCaps * caps)
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self->vinfo = vinfo;
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GST_OBJECT_LOCK (self);
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if (self->reconfigure) {
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self->reconfigure = FALSE;
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self->render_rect = self->pending_rect;
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}
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GST_OBJECT_UNLOCK (self);
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GST_DEBUG_OBJECT (self, "negotiated caps = %" GST_PTR_FORMAT, caps);
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return TRUE;
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@ -1232,7 +1351,7 @@ static GstFlowReturn
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gst_kms_sink_show_frame (GstVideoSink * vsink, GstBuffer * buf)
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{
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gint ret;
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GstBuffer *buffer;
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GstBuffer *buffer = NULL;
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guint32 fb_id;
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GstKMSSink *self;
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GstVideoCropMeta *crop;
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@ -1245,7 +1364,11 @@ gst_kms_sink_show_frame (GstVideoSink * vsink, GstBuffer * buf)
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res = GST_FLOW_ERROR;
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buffer = gst_kms_sink_get_input_buffer (self, buf);
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if (buf)
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buffer = gst_kms_sink_get_input_buffer (self, buf);
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else if (self->last_buffer)
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buffer = gst_buffer_ref (self->last_buffer);
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if (!buffer)
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return GST_FLOW_ERROR;
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fb_id = gst_kms_memory_get_fb_id (gst_buffer_peek_memory (buffer, 0));
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@ -1254,6 +1377,7 @@ gst_kms_sink_show_frame (GstVideoSink * vsink, GstBuffer * buf)
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GST_TRACE_OBJECT (self, "displaying fb %d", fb_id);
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GST_OBJECT_LOCK (self);
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if (self->modesetting_enabled) {
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self->buffer_id = fb_id;
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goto sync_frame;
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@ -1274,12 +1398,15 @@ gst_kms_sink_show_frame (GstVideoSink * vsink, GstBuffer * buf)
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src.w = GST_VIDEO_SINK_WIDTH (self);
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src.h = GST_VIDEO_SINK_HEIGHT (self);
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dst.w = self->hdisplay;
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dst.h = self->vdisplay;
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dst.w = self->render_rect.w;
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dst.h = self->render_rect.h;
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retry_set_plane:
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gst_video_sink_center_rect (src, dst, &result, self->can_scale);
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result.x += self->render_rect.x;
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result.y += self->render_rect.y;
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if (crop) {
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src.w = crop->width;
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src.h = crop->height;
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@ -1288,6 +1415,24 @@ retry_set_plane:
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src.h = GST_VIDEO_INFO_HEIGHT (&self->vinfo);
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}
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/* handle out of screen case */
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if ((result.x + result.w) > self->hdisplay)
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result.w = self->hdisplay - result.x;
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if ((result.y + result.h) > self->vdisplay)
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result.h = self->vdisplay - result.y;
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if (result.w <= 0 || result.h <= 0) {
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GST_WARNING_OBJECT (self, "video is out of display range");
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goto sync_frame;
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}
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/* to make sure it can be show when driver don't support scale */
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if (!self->can_scale) {
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src.w = result.w;
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src.h = result.h;
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}
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GST_TRACE_OBJECT (self,
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"drmModeSetPlane at (%i,%i) %ix%i sourcing at (%i,%i) %ix%i",
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result.x, result.y, result.w, result.h, src.x, src.y, src.w, src.h);
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@ -1306,12 +1451,16 @@ retry_set_plane:
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sync_frame:
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/* Wait for the previous frame to complete redraw */
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if (!gst_kms_sink_sync (self))
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if (!gst_kms_sink_sync (self)) {
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GST_OBJECT_UNLOCK (self);
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goto bail;
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}
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gst_buffer_replace (&self->last_buffer, buffer);
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if (buffer != self->last_buffer)
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gst_buffer_replace (&self->last_buffer, buffer);
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g_clear_pointer (&self->tmp_kmsmem, gst_memory_unref);
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GST_OBJECT_UNLOCK (self);
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res = GST_FLOW_OK;
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bail:
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@ -1326,6 +1475,7 @@ buffer_invalid:
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}
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set_plane_failed:
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{
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GST_OBJECT_UNLOCK (self);
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GST_DEBUG_OBJECT (self, "result = { %d, %d, %d, %d} / "
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"src = { %d, %d, %d %d } / dst = { %d, %d, %d %d }", result.x, result.y,
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result.w, result.h, src.x, src.y, src.w, src.h, dst.x, dst.y, dst.w,
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@ -1336,6 +1486,7 @@ set_plane_failed:
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}
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no_disp_ratio:
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{
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GST_OBJECT_UNLOCK (self);
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GST_ELEMENT_ERROR (self, CORE, NEGOTIATION, (NULL),
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("Error calculating the output display ratio of the video."));
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goto bail;
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@ -80,6 +80,13 @@ struct _GstKMSSink {
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GstPoll *poll;
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GstPollFD pollfd;
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/* render video rectangle */
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GstVideoRectangle render_rect;
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/* reconfigure info if driver doesn't scale */
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GstVideoRectangle pending_rect;
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gboolean reconfigure;
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};
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struct _GstKMSSinkClass {
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