1 files changed, 121 insertions, 0 deletions
diff --git a/utils/kmsview.cpp b/utils/kmsview.cpp
new file mode 100644
index 0000000..7cee024
--- /dev/null
+++ b/utils/kmsview.cpp
@@ -0,0 +1,121 @@
+#include <cstdio>
+#include <fstream>
+#include <unistd.h>
+#include <cassert>
+
+#include <kms++/kms++.h>
+#include <kms++util/kms++util.h>
+
+using namespace std;
+using namespace kms;
+
+static void read_frame(ifstream& is, DumbFramebuffer* fb, Crtc* crtc, Plane* plane)
+{
+	for (unsigned i = 0; i < fb->num_planes(); ++i)
+		is.read(reinterpret_cast<char*>(fb->map(i)), fb->size(i));
+
+	unsigned w = min(crtc->width(), fb->width());
+	unsigned h = min(crtc->height(), fb->height());
+
+	int r = crtc->set_plane(plane, *fb,
+				0, 0, w, h,
+				0, 0, fb->width(), fb->height());
+
+	ASSERT(r == 0);
+}
+
+static const char* usage_str =
+	"Usage: kmsview [options] <file> <width> <height> <fourcc>\n\n"
+	"Options:\n"
+	"  -c, --connector <name>	Output connector\n"
+	"  -t, --time <ms>		Milliseconds to sleep between frames\n";
+
+static void usage()
+{
+	puts(usage_str);
+}
+
+int main(int argc, char** argv)
+{
+	uint32_t time = 0;
+	string dev_path;
+	string conn_name;
+
+	OptionSet optionset = {
+		Option("c|connector=", [&conn_name](string s) {
+			conn_name = s;
+		}),
+		Option("|device=", [&dev_path](string s) {
+			dev_path = s;
+		}),
+		Option("t|time=", [&time](const string& str) {
+			time = stoul(str);
+		}),
+		Option("h|help", []() {
+			usage();
+			exit(-1);
+		}),
+	};
+
+	optionset.parse(argc, argv);
+
+	vector<string> params = optionset.params();
+
+	if (params.size() != 4) {
+		usage();
+		exit(-1);
+	}
+
+	string filename = params[0];
+	uint32_t w = stoi(params[1]);
+	uint32_t h = stoi(params[2]);
+	string modestr = params[3];
+
+	auto pixfmt = fourcc_str_to_pixel_format(modestr);
+
+	ifstream is(filename, ifstream::binary);
+
+	is.seekg(0, std::ios::end);
+	unsigned fsize = is.tellg();
+	is.seekg(0);
+
+	Card card(dev_path);
+	ResourceManager res(card);
+
+	auto conn = res.reserve_connector(conn_name);
+	auto crtc = res.reserve_crtc(conn);
+	auto plane = res.reserve_overlay_plane(crtc, pixfmt);
+	FAIL_IF(!plane, "available plane not found");
+
+	auto fb = new DumbFramebuffer(card, w, h, pixfmt);
+
+	unsigned frame_size = 0;
+	for (unsigned i = 0; i < fb->num_planes(); ++i)
+		frame_size += fb->size(i);
+
+	assert(frame_size);
+
+	unsigned num_frames = fsize / frame_size;
+	printf("file size %u, frame size %u, frames %u\n", fsize, frame_size, num_frames);
+
+	for (unsigned i = 0; i < num_frames; ++i) {
+		printf("frame %u", i);
+		fflush(stdout);
+		read_frame(is, fb, crtc, plane);
+		if (!time) {
+			getchar();
+		} else {
+			usleep(time * 1000);
+			printf("\n");
+		}
+	}
+
+	is.close();
+
+	if (time) {
+		printf("press enter to exit\n");
+		getchar();
+	}
+
+	delete fb;
+}