1 files changed, 77 insertions, 0 deletions
diff --git a/kms++/encoder.cpp b/kms++/encoder.cpp
new file mode 100644
index 0000000..1ed2d5c
--- /dev/null
+++ b/kms++/encoder.cpp
@@ -0,0 +1,77 @@
+#include <stdio.h>
+#include <iostream>
+#include <unistd.h>
+#include <fcntl.h>
+#include <cassert>
+#include <xf86drm.h>
+#include <xf86drmMode.h>
+
+#include "kms++.h"
+
+using namespace std;
+
+namespace kms
+{
+
+struct EncoderPriv
+{
+	drmModeEncoderPtr drm_encoder;
+};
+
+static const map<int, string> encoder_types = {
+#define DEF_ENC(c) { DRM_MODE_ENCODER_##c, #c }
+	DEF_ENC(NONE),
+	DEF_ENC(DAC),
+	DEF_ENC(TMDS),
+	DEF_ENC(LVDS),
+	DEF_ENC(TVDAC),
+	DEF_ENC(VIRTUAL),
+	DEF_ENC(DSI),
+	{ 7, "DPMST" },
+#undef DEF_ENC
+};
+
+Encoder::Encoder(Card &card, uint32_t id, uint32_t idx)
+	:DrmPropObject(card, id, DRM_MODE_OBJECT_ENCODER, idx)
+{
+	m_priv = new EncoderPriv();
+	m_priv->drm_encoder = drmModeGetEncoder(this->card().fd(), this->id());
+	assert(m_priv->drm_encoder);
+}
+
+Encoder::~Encoder()
+{
+	drmModeFreeEncoder(m_priv->drm_encoder);
+	delete m_priv;
+}
+
+Crtc* Encoder::get_crtc() const
+{
+	if (m_priv->drm_encoder->crtc_id)
+		return card().get_crtc(m_priv->drm_encoder->crtc_id);
+	else
+		return 0;
+}
+
+vector<Crtc*> Encoder::get_possible_crtcs() const
+{
+	unsigned bits = m_priv->drm_encoder->possible_crtcs;
+	vector<Crtc*> crtcs;
+
+	for (int idx = 0; bits; idx++, bits >>= 1) {
+		if ((bits & 1) == 0)
+			continue;
+
+		auto crtc = card().get_crtcs()[idx];
+		crtcs.push_back(crtc);
+	}
+
+	return crtcs;
+}
+
+const string& Encoder::get_encoder_type() const
+{
+	return encoder_types.at(m_priv->drm_encoder->encoder_type);
+}
+
+}