1 files changed, 74 insertions, 0 deletions
diff --git a/libkms++/crtc.cpp b/libkms++/crtc.cpp
new file mode 100644
index 0000000..e583be8
--- /dev/null
+++ b/libkms++/crtc.cpp
@@ -0,0 +1,74 @@
+#include <stdio.h>
+#include <iostream>
+#include <unistd.h>
+#include <fcntl.h>
+#include <cassert>
+
+#include "kms++.h"
+#include "helpers.h"
+
+using namespace std;
+
+namespace kms
+{
+
+struct CrtcPriv
+{
+	drmModeCrtcPtr drm_crtc;
+};
+
+Crtc::Crtc(Card &card, uint32_t id, uint32_t idx)
+	:DrmObject(card, id, DRM_MODE_OBJECT_CRTC, idx)
+{
+	m_priv = new CrtcPriv();
+	m_priv->drm_crtc = drmModeGetCrtc(this->card().fd(), this->id());
+	assert(m_priv->drm_crtc);
+}
+
+Crtc::~Crtc()
+{
+	drmModeFreeCrtc(m_priv->drm_crtc);
+	delete m_priv;
+}
+
+void Crtc::setup()
+{
+	for (Plane* plane : card().get_planes()) {
+		if (plane->supports_crtc(this))
+			m_possible_planes.push_back(plane);
+	}
+}
+
+void Crtc::print_short() const
+{
+	auto c  = m_priv->drm_crtc;
+
+	printf("Crtc %d, %d,%d %dx%d\n", id(),
+	       c->x, c->y, c->width, c->height);
+}
+
+int Crtc::set_mode(Connector* conn, Framebuffer& fb, const Videomode& mode)
+{
+	uint32_t conns[] = { conn->id() };
+	drmModeModeInfo drmmode = video_mode_to_drm_mode(mode);
+
+	return drmModeSetCrtc(card().fd(), id(), fb.id(),
+			      0, 0,
+			      conns, 1, &drmmode);
+}
+
+static inline uint32_t conv(float x)
+{
+	// XXX fix the conversion for fractional part
+	return ((uint32_t)x) << 16;
+}
+
+int Crtc::set_plane(Plane* plane, Framebuffer& fb,
+		    int32_t dst_x, int32_t dst_y, uint32_t dst_w, uint32_t dst_h,
+		    float src_x, float src_y, float src_w, float src_h)
+{
+	return drmModeSetPlane(card().fd(), plane->id(), id(), fb.id(), 0,
+			       dst_x, dst_y, dst_w, dst_h,
+			       conv(src_x), conv(src_y), conv(src_w), conv(src_h));
+}
+}