1 files changed, 68 insertions, 0 deletions
diff --git a/kms++/src/extframebuffer.cpp b/kms++/src/extframebuffer.cpp
new file mode 100644
index 0000000..0ade454
--- /dev/null
+++ b/kms++/src/extframebuffer.cpp
@@ -0,0 +1,68 @@
+
+#include <cstring>
+#include <stdexcept>
+#include <sys/mman.h>
+#include <xf86drm.h>
+#include <xf86drmMode.h>
+
+#include <kms++/kms++.h>
+
+using namespace std;
+
+namespace kms
+{
+
+ExtFramebuffer::ExtFramebuffer(Card& card, uint32_t width, uint32_t height, uint8_t depth, uint8_t bpp, uint32_t stride, uint32_t handle)
+	:Framebuffer(card, width, height)
+{
+	uint32_t id;
+	int r = drmModeAddFB(card.fd(), width, height, depth, bpp, stride, handle, &id);
+	if (r)
+		throw invalid_argument("fob");
+
+	set_id(id);
+}
+
+ExtFramebuffer::ExtFramebuffer(Card& card, uint32_t width, uint32_t height, PixelFormat format,
+			       uint32_t handles[], uint32_t pitches[], uint32_t offsets[])
+	: Framebuffer(card, width, height)
+{
+	uint32_t id;
+	int r = drmModeAddFB2(card.fd(), width, height, (uint32_t)format, handles, pitches, offsets, &id, 0);
+	if (r)
+		throw std::invalid_argument(string("Failed to create ExtFramebuffer: ") + strerror(r));
+
+	set_id(id);
+}
+
+ExtFramebuffer::ExtFramebuffer(Card& card, uint32_t width, uint32_t height, PixelFormat format,
+			       int fds[4], uint32_t pitches[4], uint32_t offsets[4])
+	: Framebuffer(card, width, height)
+{
+	int r;
+
+	const PixelFormatInfo& format_info = get_pixel_format_info(format);
+
+	uint32_t handles[4] = { 0 };
+
+	for (int i = 0; i < format_info.num_planes; ++i) {
+		r = drmPrimeFDToHandle(card.fd(), fds[i], &handles[i]);
+		if (r)
+			throw invalid_argument(string("drmPrimeFDToHandle: ") + strerror(errno));
+	}
+
+	uint32_t id;
+	r = drmModeAddFB2(card.fd(), width, height, (uint32_t)format,
+			  handles, pitches, offsets, &id, 0);
+	if (r)
+		throw invalid_argument(string("drmModeAddFB2 failed: ") + strerror(errno));
+
+	set_id(id);
+}
+
+ExtFramebuffer::~ExtFramebuffer()
+{
+	drmModeRmFB(card().fd(), id());
+}
+
+}