1 files changed, 71 insertions, 0 deletions
diff --git a/kms++/src/framebuffer.cpp b/kms++/src/framebuffer.cpp
new file mode 100644
index 0000000..3d251ce
--- /dev/null
+++ b/kms++/src/framebuffer.cpp
@@ -0,0 +1,71 @@
+#include <algorithm>
+#include <cstring>
+#include <stdexcept>
+#include <sys/mman.h>
+#include <xf86drm.h>
+#include <xf86drmMode.h>
+
+#include <kms++/kms++.h>
+
+using namespace std;
+
+namespace kms
+{
+Framebuffer::Framebuffer(Card& card, uint32_t width, uint32_t height)
+	: DrmObject(card, DRM_MODE_OBJECT_FB), m_width(width), m_height(height)
+{
+	card.m_framebuffers.push_back(this);
+}
+
+Framebuffer::Framebuffer(Card& card, uint32_t id)
+	: DrmObject(card, id, DRM_MODE_OBJECT_FB)
+{
+	auto fb = drmModeGetFB2(card.fd(), id);
+
+	if (fb) {
+		m_width = fb->width;
+		m_height = fb->height;
+		m_fourcc = fb->pixel_format;
+		try {
+			m_format = fourcc_to_pixel_format(m_fourcc);
+		} catch (const invalid_argument& e) {
+			m_format = PixelFormat::Undefined;
+		}
+
+		drmModeFreeFB2(fb);
+	} else {
+		m_width = m_height = 0;
+	}
+
+	card.m_framebuffers.push_back(this);
+}
+
+void Framebuffer::flush(uint32_t x, uint32_t y, uint32_t width, uint32_t height)
+{
+	drmModeClip clip{};
+	clip.x1 = x;
+	clip.y1 = y;
+	clip.x2 = x + width;
+	clip.y2 = y + height;
+
+	drmModeDirtyFB(card().fd(), id(), &clip, 1);
+}
+
+void Framebuffer::flush()
+{
+	drmModeClip clip{};
+	clip.x1 = clip.y1 = 0;
+	clip.x2 = width();
+	clip.y2 = height();
+
+	drmModeDirtyFB(card().fd(), id(), &clip, 1);
+}
+
+Framebuffer::~Framebuffer()
+{
+	auto& fbs = card().m_framebuffers;
+	auto iter = find(fbs.begin(), fbs.end(), this);
+	card().m_framebuffers.erase(iter);
+}
+
+} // namespace kms