From 2d14233bdb2302bffc1a241681f34933cb99c157 Mon Sep 17 00:00:00 2001
From: Tomi Valkeinen <tomi.valkeinen@ti.com>
Date: Wed, 25 May 2016 14:34:23 +0300
Subject: Add support for DRM blobs

---
 libkms++/blob.cpp | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 libkms++/blob.cpp

(limited to 'libkms++/blob.cpp')

diff --git a/libkms++/blob.cpp b/libkms++/blob.cpp
new file mode 100644
index 0000000..10a71c6
--- /dev/null
+++ b/libkms++/blob.cpp
@@ -0,0 +1,51 @@
+#include <xf86drm.h>
+#include <xf86drmMode.h>
+
+#include "kms++.h"
+
+using namespace std;
+
+namespace kms
+{
+
+Blob::Blob(Card& card, uint32_t blob_id)
+	: DrmObject(card, blob_id, DRM_MODE_OBJECT_BLOB), m_created(false)
+{
+	// XXX should we verify that the blob_id is a blob object?
+}
+
+Blob::Blob(Card& card, void* data, size_t len)
+	: DrmObject(card, DRM_MODE_OBJECT_BLOB), m_created(true)
+{
+	uint32_t id;
+
+	int r = drmModeCreatePropertyBlob(card.fd(), data, len, &id);
+	if (r)
+		throw invalid_argument("FAILED TO CREATE PROP\n");
+
+	set_id(id);
+}
+
+Blob::~Blob()
+{
+	if (m_created)
+		drmModeDestroyPropertyBlob(card().fd(), id());
+}
+
+vector<uint8_t> Blob::data()
+{
+	drmModePropertyBlobPtr blob = drmModeGetPropertyBlob(card().fd(), id());
+
+	if (!blob)
+		throw invalid_argument("Blob data not available");
+
+	uint8_t* data = (uint8_t*)blob->data;
+
+	auto v = vector<uint8_t>(data, data + blob->length);
+
+	drmModeFreePropertyBlob(blob);
+
+	return v;
+}
+
+}
-- 
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