hawkeye camera support(not tested)
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meelstorm
209
framework/Inspectron.HawkEye/RTSP/Server/TestCard.cs
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209
framework/Inspectron.HawkEye/RTSP/Server/TestCard.cs
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using System;
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using System.Diagnostics;
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using System.Globalization;
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// (c) Roger Hardiman 2016
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// This class uses a System Timer to generate a YUV image at regular intervals
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// The ReceivedYUVFrame event is fired for each new YUV image
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namespace Inspectron.HawkEye.RTSP.Server
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{
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public class TestCard
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{
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// Events that applications can receive
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public event ReceivedYUVFrameHandler ReceivedYUVFrame;
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// Delegated functions (essentially the function prototype)
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public delegate void ReceivedYUVFrameHandler(uint timestamp, int width, int height, byte[] data);
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// Local variables
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private System.Timers.Timer frame_timer;
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private int fps = 0;
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private Stopwatch stopwatch;
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private byte[] yuv_frame = null;
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private int x_position = 0;
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private int y_position = 0;
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private int width = 0;
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private int height = 0;
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private Object generate_lock = new Object();
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private long count = 0;
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// ASCII Font
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// Created by Roger Hardiman using an online generation tool
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// http://www.riyas.org/2013/12/online-led-matrix-font-generator-with.html
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byte[] ascii_0 = { 0x00, 0x3c, 0x42, 0x42, 0x42, 0x42, 0x42, 0x3c };
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byte[] ascii_1 = { 0x00, 0x08, 0x18, 0x28, 0x08, 0x08, 0x08, 0x3e };
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byte[] ascii_2 = { 0x00, 0x3e, 0x42, 0x02, 0x0c, 0x30, 0x40, 0x7e };
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byte[] ascii_3 = { 0x00, 0x7c, 0x02, 0x02, 0x3c, 0x02, 0x02, 0x7c };
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byte[] ascii_4 = { 0x00, 0x0c, 0x14, 0x24, 0x44, 0x7e, 0x04, 0x04 };
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byte[] ascii_5 = { 0x00, 0x7e, 0x40, 0x40, 0x7c, 0x02, 0x02, 0x7c };
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byte[] ascii_6 = { 0x00, 0x3e, 0x40, 0x40, 0x7c, 0x42, 0x42, 0x3c };
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byte[] ascii_7 = { 0x00, 0x7e, 0x02, 0x02, 0x04, 0x08, 0x10, 0x20 };
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byte[] ascii_8 = { 0x00, 0x3c, 0x42, 0x42, 0x3c, 0x42, 0x42, 0x3c };
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byte[] ascii_9 = { 0x00, 0x3c, 0x42, 0x42, 0x3c, 0x02, 0x02, 0x3e };
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byte[] ascii_colon = { 0x00, 0x00, 0x18, 0x18, 0x00, 0x18, 0x18, 0x00 };
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byte[] ascii_space = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
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byte[] ascii_dot = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00 };
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// Constructor
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public TestCard(int width, int height, int fps)
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{
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this.width = width;
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this.height = height;
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this.fps = fps;
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// YUV size
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int y_size = width * height;
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int u_size = (width >> 1) * (height >> 1);
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int v_size = (width >> 1) * (height >> 1);
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yuv_frame = new byte[y_size + u_size + v_size];
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// Set all values to 127
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for (int x = 0; x < yuv_frame.Length; x++)
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{
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yuv_frame[x] = 127;
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}
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stopwatch = new Stopwatch();
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stopwatch.Start();
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// Start timer. The Timer will generate each YUV frame
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frame_timer = new System.Timers.Timer();
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frame_timer.Interval = 1; // on first pass timer will fire straight away (cannot have zero interval)
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frame_timer.AutoReset = false; // do not restart timer after the time has elapsed
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frame_timer.Elapsed += (object sender, System.Timers.ElapsedEventArgs e) =>
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{
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// send a frame
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Send_YUV_Frame();
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count++;
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// Some CPU cycles will have been used in Sending the YUV Frame.
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// Compute the delay required (the Timer Interval) before sending the next YUV frame
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long time_for_next_tick_ms = (count * 1000) / fps;
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long time_to_wait = time_for_next_tick_ms - stopwatch.ElapsedMilliseconds;
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if (time_to_wait <= 0) time_to_wait = 1; // cannot have negative or zero intervals
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frame_timer.Interval = time_to_wait;
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frame_timer.Start();
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};
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frame_timer.Start();
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}
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// Dispose
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public void Disconnect()
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{
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// Stop the frame timer
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frame_timer.Stop();
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frame_timer.Dispose();
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}
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private void Send_YUV_Frame()
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{
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lock (generate_lock)
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{
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// Get the current time
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DateTime now_utc = DateTime.UtcNow;
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DateTime now_local = now_utc.ToLocalTime();
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long timestamp_ms = ((long)(now_utc.Ticks / TimeSpan.TicksPerMillisecond));
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// Generate the String to write
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char[] overlay = null;
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if (width >= 96)
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{
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// Need 12 characters of 8x8 pixels. 12*8 = 96
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// HH:MM:SS.mmm
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String overlay_str = now_local.ToString("HH:mm:ss.fff", CultureInfo.InvariantCulture); // do not replace : or . by local formats
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overlay = overlay_str.ToCharArray();
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}
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else
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{
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// Min for most video formats is 16x16, enough for 2 characters
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String overlay_str = now_local.ToString("ss", CultureInfo.InvariantCulture); // do not replace : or . by local formats
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overlay = overlay_str.ToCharArray();
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}
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// process each character
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int start_row = ((height / 2) - 4); // start 4 pixels above the centre row (4 is half the font height)
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for (int c = 0; c < overlay.Length; c++)
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{
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byte[] font = ascii_space;
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if (overlay[c] == '0') font = ascii_0;
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if (overlay[c] == '1') font = ascii_1;
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if (overlay[c] == '2') font = ascii_2;
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if (overlay[c] == '3') font = ascii_3;
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if (overlay[c] == '4') font = ascii_4;
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if (overlay[c] == '5') font = ascii_5;
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if (overlay[c] == '6') font = ascii_6;
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if (overlay[c] == '7') font = ascii_7;
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if (overlay[c] == '8') font = ascii_8;
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if (overlay[c] == '9') font = ascii_9;
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if (overlay[c] == ' ') font = ascii_space;
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if (overlay[c] == ':') font = ascii_colon;
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if (overlay[c] == '.') font = ascii_dot;
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// process the font character
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for (int rows = 0; rows < 8; rows++)
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{
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int y_plane_pos = (start_row * width) + (rows * width) + (c * 8);
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byte row_byte = font[rows];
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// bit shift the row byte into individual pixels where the font On/Off maps to Y intensity 50 or 200
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for (int bits = 0; bits < 8; bits++)
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{
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if ((row_byte & 0x80) == 0x80)
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{
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// Pixel On
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yuv_frame[y_plane_pos] = 200;
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}
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else
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{
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yuv_frame[y_plane_pos] = 50;
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}
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y_plane_pos++;
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row_byte = (byte)(row_byte << 1); // shift up so the next 'bit' to process is the most significant bit
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}
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}
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}
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// Toggle the pixel value
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byte pixel_value = yuv_frame[(y_position * width) + x_position];
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// change brightness of pixel
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if (pixel_value > 128) pixel_value = 30;
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else pixel_value = 230;
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yuv_frame[(y_position * width) + x_position] = pixel_value;
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// move the x and y position
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x_position = x_position + 5;
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if (x_position >= width)
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{
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x_position = 0;
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y_position = y_position + 1;
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}
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if (y_position >= height)
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{
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y_position = 0;
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}
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// fire the Event
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if (ReceivedYUVFrame != null)
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{
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ReceivedYUVFrame((uint)stopwatch.ElapsedMilliseconds, width, height, yuv_frame);
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}
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}
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}
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}
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}
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