kmsutils: add VideoDevice

1 files changed, 86 insertions, 0 deletions

diff --git a/kms++util/inc/kms++util/videodevice.h b/kms++util/inc/kms++util/videodevice.h
new file mode 100644
index 0000000..68e2b01
--- /dev/null
+++ b/kms++util/inc/kms++util/videodevice.h
@@ -0,0 +1,86 @@
+#pragma once
+
+#include <string>
+#include <kms++/kms++.h>
+
+class VideoStreamer;
+
+class VideoDevice
+{
+public:
+	struct VideoFrameSize
+	{
+		uint32_t min_w, max_w, step_w;
+		uint32_t min_h, max_h, step_h;
+	};
+
+	VideoDevice(const std::string& dev);
+	VideoDevice(int fd);
+	~VideoDevice();
+
+	VideoDevice(const VideoDevice& other) = delete;
+	VideoDevice& operator=(const VideoDevice& other) = delete;
+
+	VideoStreamer* get_capture_streamer();
+	VideoStreamer* get_output_streamer();
+
+	std::vector<std::tuple<uint32_t, uint32_t>> get_discrete_frame_sizes(kms::PixelFormat fmt);
+	VideoFrameSize get_frame_sizes(kms::PixelFormat fmt);
+
+	int fd() const { return m_fd; }
+	bool has_capture() const { return m_has_capture; }
+	bool has_output() const { return m_has_output; }
+	bool has_m2m() const { return m_has_m2m; }
+
+	static std::vector<std::string> get_capture_devices();
+	static std::vector<std::string> get_m2m_devices();
+
+private:
+	int m_fd;
+
+	bool m_has_capture;
+	bool m_has_mplane_capture;
+
+	bool m_has_output;
+	bool m_has_mplane_output;
+
+	bool m_has_m2m;
+	bool m_has_mplane_m2m;
+
+	std::vector<kms::DumbFramebuffer*> m_capture_fbs;
+	std::vector<kms::DumbFramebuffer*> m_output_fbs;
+
+	VideoStreamer* m_capture_streamer;
+	VideoStreamer* m_output_streamer;
+};
+
+class VideoStreamer
+{
+public:
+	enum class StreamerType {
+		CaptureSingle,
+		CaptureMulti,
+		OutputSingle,
+		OutputMulti,
+	};
+
+	VideoStreamer(int fd, StreamerType type);
+
+	std::vector<std::string> get_ports();
+	void set_port(uint32_t index);
+
+	std::vector<kms::PixelFormat> get_formats();
+	void set_format(kms::PixelFormat fmt, uint32_t width, uint32_t height);
+	void set_queue_size(uint32_t queue_size);
+	void queue(kms::DumbFramebuffer* fb);
+	kms::DumbFramebuffer* dequeue();
+	void stream_on();
+	void stream_off();
+
+	int fd() const { return m_fd; }
+
+private:
+	int m_fd;
+	StreamerType m_type;
+	std::vector<kms::DumbFramebuffer*> m_fbs;
+};