From e098c998d6850668650205657f2a806eaf297252 Mon Sep 17 00:00:00 2001
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From: Jeffy Chen <jeffy.chen@rock-chips.com>
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Date: Mon, 15 Jun 2020 10:03:01 +0800
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Subject: [PATCH 17/40] kmssink: Support setting plane zpos
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Set env KMSSINK_PLANE_ZPOS to specify plane zpos.
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Set env KMSSINK_PLANE_ON_TOP to set max zpos.
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Set env KMSSINK_PLANE_ON_BOTTOM to set min zpos.
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Default zpos is max.
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Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
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---
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sys/kms/gstkmssink.c | 78 ++++++++++++++++++++++++++++++++++++++++++++
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sys/kms/gstkmssink.h | 1 +
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2 files changed, 79 insertions(+)
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diff --git a/sys/kms/gstkmssink.c b/sys/kms/gstkmssink.c
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index 89f122c..24eb9f2 100644
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--- a/sys/kms/gstkmssink.c
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+++ b/sys/kms/gstkmssink.c
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@@ -720,6 +720,76 @@ gst_kms_sink_update_plane_properties (GstKMSSink * self)
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gst_kms_sink_update_properties (&iter, self->plane_props);
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}
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+static void
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+gst_kms_sink_configure_plane_zpos (GstKMSSink * self, gboolean restore)
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+{
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+ drmModeObjectPropertiesPtr props = NULL;
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+ drmModePropertyPtr prop = NULL;
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+ drmModeResPtr res = NULL;
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+ guint64 min, max, zpos;
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+ const gchar *buf;
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+ gint i;
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+
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+ if (self->plane_id <= 0)
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+ return;
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+
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+ if (drmSetClientCap (self->fd, DRM_CLIENT_CAP_ATOMIC, 1))
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+ return;
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+
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+ res = drmModeGetResources (self->fd);
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+ if (!res)
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+ return;
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+
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+ props = drmModeObjectGetProperties (self->fd, self->plane_id,
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+ DRM_MODE_OBJECT_PLANE);
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+ if (!props)
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+ goto out;
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+
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+ for (i = 0; i < props->count_props; i++) {
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+ prop = drmModeGetProperty (self->fd, props->props[i]);
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+ if (prop && !strcmp (prop->name, "ZPOS"))
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+ break;
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+ drmModeFreeProperty (prop);
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+ prop = NULL;
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+ }
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+
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+ if (!prop)
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+ goto out;
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+
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+ min = prop->values[0];
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+ max = prop->values[1];
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+
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+ if (restore) {
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+ if (self->saved_zpos < 0)
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+ goto out;
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+
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+ zpos = self->saved_zpos;
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+ } else {
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+ zpos = min + 1;
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+
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+ buf = g_getenv ("KMSSINK_PLANE_ZPOS");
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+ if (buf)
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+ zpos = atoi (buf);
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+ else if (g_getenv ("KMSSINK_PLANE_ON_TOP"))
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+ zpos = max;
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+ else if (g_getenv ("KMSSINK_PLANE_ON_BOTTOM"))
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+ zpos = min;
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+ }
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+
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+ GST_INFO_OBJECT (self, "set plane zpos = %lu (%lu~%lu)", zpos, min, max);
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+
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+ if (self->saved_zpos < 0)
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+ self->saved_zpos = props->prop_values[i];
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+
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+ drmModeObjectSetProperty (self->fd, self->plane_id,
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+ DRM_MODE_OBJECT_PLANE, props->props[i], zpos);
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+
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+out:
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+ drmModeFreeProperty (prop);
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+ drmModeFreeObjectProperties (props);
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+ drmModeFreeResources (res);
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+}
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+
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static gboolean
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gst_kms_sink_start (GstBaseSink * bsink)
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{
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@@ -800,6 +870,8 @@ retry_find_plane:
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self->crtc_id = crtc->crtc_id;
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self->plane_id = plane->plane_id;
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+ gst_kms_sink_configure_plane_zpos (self, FALSE);
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+
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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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@@ -934,6 +1006,11 @@ gst_kms_sink_stop (GstBaseSink * bsink)
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if (self->allocator)
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gst_kms_allocator_clear_cache (self->allocator);
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+ if (self->saved_zpos >= 0) {
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+ gst_kms_sink_configure_plane_zpos (self, TRUE);
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+ self->saved_zpos = -1;
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+ }
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+
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gst_buffer_replace (&self->last_buffer, NULL);
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gst_caps_replace (&self->allowed_caps, NULL);
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gst_object_replace ((GstObject **) & self->pool, NULL);
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@@ -1929,6 +2006,7 @@ gst_kms_sink_init (GstKMSSink * sink)
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sink->fd = -1;
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sink->conn_id = -1;
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sink->plane_id = -1;
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+ sink->saved_zpos = -1;
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sink->can_scale = TRUE;
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gst_poll_fd_init (&sink->pollfd);
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sink->poll = gst_poll_new (TRUE);
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diff --git a/sys/kms/gstkmssink.h b/sys/kms/gstkmssink.h
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index 9d90518..02571bb 100644
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--- a/sys/kms/gstkmssink.h
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+++ b/sys/kms/gstkmssink.h
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@@ -53,6 +53,7 @@ struct _GstKMSSink {
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gint crtc_id;
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gint plane_id;
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guint pipe;
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+ guint saved_zpos;
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/* crtc data */
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guint16 hdisplay, vdisplay;
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--
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2.17.1
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