601 lines
18 KiB
C#
601 lines
18 KiB
C#
using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.IO;
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using System.Drawing;
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using System.Runtime.InteropServices;
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using BizHawk;
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//some helpful p/invoke from http://www.codeproject.com/KB/audio-video/Motion_Detection.aspx?msg=1142967
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namespace BizHawk.MultiClient
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{
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class AviWriter : IDisposable
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{
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CodecToken currVideoCodecToken = null;
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AviWriterSegment currSegment;
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IEnumerator<string> nameProvider;
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bool IsOpen { get { return nameProvider != null; } }
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public void Dispose()
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{
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if (currSegment != null)
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currSegment.Dispose();
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}
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/// <summary>
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/// sets the codec token to be used for video compression
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/// </summary>
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public void SetVideoCodecToken(CodecToken token)
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{
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currVideoCodecToken = token;
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}
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public static IEnumerator<string> CreateBasicNameProvider(string template)
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{
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string dir = Path.GetDirectoryName(template);
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string baseName = Path.GetFileNameWithoutExtension(template);
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string ext = Path.GetExtension(template);
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yield return template;
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int counter = 1;
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for (; ; )
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{
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yield return Path.Combine(dir, baseName) + "_" + counter + ext;
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counter++;
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}
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}
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/// <summary>
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/// opens an avi file for recording with names based on the supplied template.
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/// set a video codec token first.
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/// </summary>
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public void OpenFile(string baseName) { OpenFile(CreateBasicNameProvider(baseName)); }
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/// <summary>
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/// opens an avi file for recording with the supplied enumerator used to name files.
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/// set a video codec token first.
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/// </summary>
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/// <param name="nameProvider"></param>
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public void OpenFile(IEnumerator<string> nameProvider)
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{
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this.nameProvider = nameProvider;
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if (currVideoCodecToken == null)
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throw new InvalidOperationException("Tried to start recording an AVI with no video codec token set");
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}
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public void CloseFile()
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{
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if (currSegment != null)
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currSegment.Dispose();
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currSegment = null;
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}
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public void AddFrame(IVideoProvider source)
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{
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SetVideoParameters(source.BufferWidth, source.BufferHeight);
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ConsiderLengthSegment();
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if (currSegment == null) Segment();
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currSegment.AddFrame(source);
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}
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public void AddSamples(short[] samples)
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{
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ConsiderLengthSegment();
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if (currSegment == null) Segment();
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currSegment.AddSamples(samples);
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}
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void ConsiderLengthSegment()
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{
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if(currSegment == null) return;
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long len = currSegment.GetLengthApproximation();
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const long segment_length_limit = 2 * 1000 * 1000 * 1000; //2GB
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//const long segment_length_limit = 10 * 1000 * 1000; //for testing
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if (len > segment_length_limit) Segment();
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}
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void StartRecording()
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{
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//i guess theres nothing to do here
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}
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void Segment()
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{
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if (!IsOpen) return;
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if (currSegment == null)
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StartRecording();
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else
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currSegment.Dispose();
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currSegment = new AviWriterSegment();
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nameProvider.MoveNext();
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currSegment.OpenFile(nameProvider.Current, parameters, currVideoCodecToken);
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currSegment.OpenStreams();
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}
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/// <summary>
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/// Acquires a video codec configuration from the user. you may save it for future use, but you must dispose of it when youre done with it.
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/// returns null if the user canceled the dialog
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/// </summary>
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public static CodecToken AcquireVideoCodecToken(IntPtr hwnd, CodecToken lastToken)
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{
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var temp_params = new Parameters();
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temp_params.height = 256;
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temp_params.width = 256;
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temp_params.fps = 60;
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temp_params.fps_scale = 1;
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temp_params.a_bits = 16;
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temp_params.a_samplerate = 44100;
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temp_params.a_channels = 2;
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var temp = new AviWriterSegment();
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string tempfile = Path.GetTempFileName();
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File.Delete(tempfile);
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tempfile = Path.ChangeExtension(tempfile, "avi");
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temp.OpenFile(tempfile, temp_params, lastToken);
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CodecToken token = temp.AcquireVideoCodecToken(hwnd);
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temp.CloseFile();
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File.Delete(tempfile);
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return token;
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}
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class Parameters
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{
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public int width, height;
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public void PopulateBITMAPINFOHEADER(ref Win32.BITMAPINFOHEADER bmih)
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{
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bmih.Init();
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bmih.biPlanes = 1;
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bmih.biBitCount = 24;
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bmih.biHeight = height;
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bmih.biWidth = width;
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bmih.biSizeImage = (uint)(3 * width * height);
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}
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public bool has_audio;
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public int a_samplerate, a_channels, a_bits;
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public void PopulateWAVEFORMATEX(ref Win32.WAVEFORMATEX wfex)
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{
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int bytes = 0;
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if (a_bits == 16) bytes = 2;
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else if (a_bits == 8) bytes = 1;
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else throw new InvalidOperationException("only 8/16 bits audio are supported by AviWriter and you chose: " + a_bits);
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if (a_channels == 1) { }
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else if (a_channels == 2) { }
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else throw new InvalidOperationException("only 1/2 channels audio are supported by AviWriter and you chose: " + a_channels);
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wfex.Init();
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wfex.nBlockAlign = (ushort)(bytes * a_channels);
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wfex.nChannels = (ushort)a_channels;
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wfex.wBitsPerSample = (ushort)a_bits;
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wfex.wFormatTag = Win32.WAVE_FORMAT_PCM;
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wfex.nSamplesPerSec = (uint)a_samplerate;
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wfex.nAvgBytesPerSec = (uint)(wfex.nBlockAlign * a_samplerate);
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}
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public int fps, fps_scale;
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}
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Parameters parameters = new Parameters();
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/// <summary>
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/// set basic movie timing parameters for the avi file. must be set before the file is opened.
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/// </summary>
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public void SetMovieParameters(int fps, int fps_scale)
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{
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bool change = false;
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change |= fps != parameters.fps;
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parameters.fps = fps;
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change |= parameters.fps_scale != fps_scale;
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parameters.fps_scale = fps_scale;
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if (change) Segment();
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}
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/// <summary>
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/// set basic video parameters for the avi file. must be set before the file is opened.
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/// </summary>
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public void SetVideoParameters(int width, int height)
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{
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bool change = false;
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change |= parameters.width != width;
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parameters.width = width;
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change |= parameters.height != height;
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parameters.height = height;
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if (change) Segment();
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}
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/// <summary>
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/// set basic audio parameters for the avi file. must be set before the file isopened.
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/// </summary>
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public void SetAudioParameters(int sampleRate, int channels, int bits)
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{
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bool change = false;
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change |= parameters.a_samplerate != sampleRate;
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parameters.a_samplerate = sampleRate;
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change |= parameters.a_channels != channels;
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parameters.a_channels = channels;
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change |= parameters.a_bits != bits;
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parameters.a_bits = bits;
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change |= parameters.has_audio != true;
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parameters.has_audio = true;
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if (change) Segment();
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}
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public class CodecToken : IDisposable
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{
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~CodecToken()
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{
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Dispose();
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}
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public static CodecToken TakePossession(Win32.AVICOMPRESSOPTIONS comprOptions)
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{
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CodecToken ret = new CodecToken();
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ret.allocated = true;
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ret.comprOptions = comprOptions;
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ret.codec = Win32.decode_mmioFOURCC(comprOptions.fccHandler);
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return ret;
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}
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private CodecToken() { }
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public Win32.AVICOMPRESSOPTIONS comprOptions;
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public string codec;
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bool allocated = false;
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public void Dispose()
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{
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if (!allocated) return;
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IntPtr[] infPtrs = new IntPtr[1];
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IntPtr mem;
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// alloc unmanaged memory
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mem = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(Win32.AVICOMPRESSOPTIONS)));
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infPtrs[0] = mem;
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// copy from managed structure to unmanaged memory
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Marshal.StructureToPtr(comprOptions, mem, false);
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Win32.AVISaveOptionsFree(1, infPtrs);
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Marshal.FreeHGlobal(mem);
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codec = null;
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comprOptions = new Win32.AVICOMPRESSOPTIONS();
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allocated = false;
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}
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}
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unsafe class AviWriterSegment : IDisposable
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{
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static AviWriterSegment()
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{
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Win32.AVIFileInit();
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}
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public AviWriterSegment()
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{
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}
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public void Dispose()
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{
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CloseFile();
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}
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CodecToken currVideoCodecToken = null;
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bool IsOpen;
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IntPtr pAviFile, pAviRawVideoStream, pAviRawAudioStream, pAviCompressedVideoStream;
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IntPtr pGlobalBuf;
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int pGlobalBuf_size;
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/// <summary>
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/// there is just ony global buf. this gets it and makes sure its big enough. don't get all re-entrant on it!
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/// </summary>
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IntPtr GetStaticGlobalBuf(int amount)
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{
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if (amount > pGlobalBuf_size)
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{
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if (pGlobalBuf != IntPtr.Zero)
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Marshal.FreeHGlobal(pGlobalBuf);
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pGlobalBuf_size = amount;
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pGlobalBuf = Marshal.AllocHGlobal(pGlobalBuf_size);
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}
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return pGlobalBuf;
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}
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class OutputStatus
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{
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public int video_frames;
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public int video_bytes;
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public int audio_bytes;
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public int audio_samples;
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public int audio_buffered_shorts;
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public const int AUDIO_SEGMENT_SIZE = 44100 * 2;
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public short[] BufferedShorts = new short[AUDIO_SEGMENT_SIZE];
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}
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OutputStatus outStatus;
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public long GetLengthApproximation() { return outStatus.video_bytes + outStatus.audio_bytes; }
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static int AVISaveOptions(IntPtr stream, ref Win32.AVICOMPRESSOPTIONS opts, IntPtr owner)
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{
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IntPtr mem = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(Win32.AVICOMPRESSOPTIONS)));
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Marshal.StructureToPtr(opts, mem, false);
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IntPtr[] streams = new[] { stream };
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IntPtr[] infPtrs = new[] { mem };
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int ret = Win32.AVISaveOptions(owner, 0, 1, streams, infPtrs);
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opts = (Win32.AVICOMPRESSOPTIONS)Marshal.PtrToStructure(mem, typeof(Win32.AVICOMPRESSOPTIONS));
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Marshal.FreeHGlobal(mem);
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return ret;
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}
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Parameters parameters;
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public void OpenFile(string destPath, Parameters parameters, CodecToken videoCodecToken)
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{
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this.parameters = parameters;
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this.currVideoCodecToken = videoCodecToken;
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//TODO - try creating the file once first before we let vfw botch it up?
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//open the avi output file handle
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if (File.Exists(destPath))
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File.Delete(destPath);
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if (Win32.FAILED(Win32.AVIFileOpenW(ref pAviFile, destPath, Win32.OpenFileStyle.OF_CREATE | Win32.OpenFileStyle.OF_WRITE, 0)))
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throw new InvalidOperationException("Couldnt open dest path for avi file: " + destPath);
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//initialize the video stream
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Win32.AVISTREAMINFOW vidstream_header = new Win32.AVISTREAMINFOW();
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Win32.BITMAPINFOHEADER bmih = new Win32.BITMAPINFOHEADER();
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parameters.PopulateBITMAPINFOHEADER(ref bmih);
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vidstream_header.fccType = Win32.mmioFOURCC("vids");
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vidstream_header.dwRate = parameters.fps;
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vidstream_header.dwScale = parameters.fps_scale;
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vidstream_header.dwSuggestedBufferSize = (int)bmih.biSizeImage;
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if (Win32.FAILED(Win32.AVIFileCreateStreamW(pAviFile, out pAviRawVideoStream, ref vidstream_header)))
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{
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CloseFile();
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throw new InvalidOperationException("Failed opening raw video stream. Not sure how this could happen");
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}
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//initialize audio stream
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Win32.AVISTREAMINFOW audstream_header = new Win32.AVISTREAMINFOW();
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Win32.WAVEFORMATEX wfex = new Win32.WAVEFORMATEX();
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parameters.PopulateWAVEFORMATEX(ref wfex);
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audstream_header.fccType = Win32.mmioFOURCC("auds");
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audstream_header.dwQuality = -1;
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audstream_header.dwScale = wfex.nBlockAlign;
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audstream_header.dwRate = (int)wfex.nAvgBytesPerSec;
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audstream_header.dwSampleSize = wfex.nBlockAlign;
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audstream_header.dwInitialFrames = 1; // ??? optimal value?
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if (Win32.FAILED(Win32.AVIFileCreateStreamW(pAviFile, out pAviRawAudioStream, ref audstream_header)))
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{
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CloseFile();
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throw new InvalidOperationException("Failed opening raw audio stream. Not sure how this could happen");
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}
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outStatus = new OutputStatus();
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IsOpen = true;
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}
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/// <summary>
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/// Acquires a video codec configuration from the user
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/// </summary>
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public CodecToken AcquireVideoCodecToken(IntPtr hwnd)
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{
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if (!IsOpen) throw new InvalidOperationException("File must be opened before acquiring a codec token (or else the stream formats wouldnt be known)");
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//encoder params
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Win32.AVICOMPRESSOPTIONS comprOptions = new Win32.AVICOMPRESSOPTIONS();
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if (currVideoCodecToken != null)
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{
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comprOptions = currVideoCodecToken.comprOptions;
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}
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if (AVISaveOptions(pAviRawVideoStream, ref comprOptions, hwnd) != 0)
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return CodecToken.TakePossession(comprOptions);
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else return null;
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}
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/// <summary>
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/// begin recording
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/// </summary>
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public void OpenStreams()
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{
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if (currVideoCodecToken == null)
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throw new InvalidOperationException("set a video codec token before opening the streams!");
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//open compressed video stream
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if (Win32.FAILED(Win32.AVIMakeCompressedStream(out pAviCompressedVideoStream, pAviRawVideoStream, ref currVideoCodecToken.comprOptions, IntPtr.Zero)))
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{
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CloseStreams();
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throw new InvalidOperationException("Failed making compressed video stream");
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}
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//set the compressed video stream input format
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Win32.BITMAPINFOHEADER bmih = new Win32.BITMAPINFOHEADER();
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parameters.PopulateBITMAPINFOHEADER(ref bmih);
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if (Win32.FAILED(Win32.AVIStreamSetFormat(pAviCompressedVideoStream, 0, ref bmih, Marshal.SizeOf(bmih))))
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{
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CloseStreams();
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throw new InvalidOperationException("Failed setting compressed video stream input format");
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}
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//set audio stream input format
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Win32.WAVEFORMATEX wfex = new Win32.WAVEFORMATEX();
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parameters.PopulateWAVEFORMATEX(ref wfex);
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if (Win32.FAILED(Win32.AVIStreamSetFormat(pAviRawAudioStream, 0, ref wfex, Marshal.SizeOf(wfex))))
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{
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CloseStreams();
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throw new InvalidOperationException("Failed setting raw audio stream input format");
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}
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}
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/// <summary>
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/// wrap up the avi writing
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/// </summary>
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public void CloseFile()
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{
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CloseStreams();
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if (pAviRawAudioStream != IntPtr.Zero)
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{
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Win32.AVIStreamRelease(pAviRawAudioStream);
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pAviRawAudioStream = IntPtr.Zero;
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}
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if (pAviRawVideoStream != IntPtr.Zero)
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{
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Win32.AVIStreamRelease(pAviRawVideoStream);
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pAviRawVideoStream = IntPtr.Zero;
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}
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if (pAviFile != IntPtr.Zero)
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{
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Win32.AVIFileRelease(pAviFile);
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pAviFile = IntPtr.Zero;
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}
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if (pGlobalBuf != IntPtr.Zero)
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{
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Marshal.FreeHGlobal(pGlobalBuf);
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pGlobalBuf = IntPtr.Zero;
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pGlobalBuf_size = 0;
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}
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}
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/// <summary>
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/// end recording
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/// </summary>
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public void CloseStreams()
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{
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FlushBufferedAudio();
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if (pAviCompressedVideoStream != IntPtr.Zero)
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{
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Win32.AVIStreamRelease(pAviCompressedVideoStream);
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pAviCompressedVideoStream = IntPtr.Zero;
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}
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}
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//todo - why couldnt this take an ISoundProvider? it could do the timekeeping as well.. hmm
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public unsafe void AddSamples(short[] samples)
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{
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int todo = samples.Length;
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int idx = 0;
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while (todo > 0)
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{
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int remain = OutputStatus.AUDIO_SEGMENT_SIZE - outStatus.audio_buffered_shorts;
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int chunk = Math.Min(remain, todo);
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for (int i = 0; i < chunk; i++)
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outStatus.BufferedShorts[outStatus.audio_buffered_shorts++] = samples[idx++];
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todo -= chunk;
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if (outStatus.audio_buffered_shorts == OutputStatus.AUDIO_SEGMENT_SIZE)
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FlushBufferedAudio();
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}
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}
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unsafe void FlushBufferedAudio()
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{
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int todo = outStatus.audio_buffered_shorts;
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int todo_realsamples = todo / 2;
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IntPtr buf = GetStaticGlobalBuf(todo * 2);
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short* sptr = (short*)buf.ToPointer();
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for (int i = 0; i < todo; i++)
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{
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sptr[i] = outStatus.BufferedShorts[i];
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}
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//(TODO - inefficient- build directly in a buffer)
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int bytes_written;
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Win32.AVIStreamWrite(pAviRawAudioStream, outStatus.audio_samples, todo_realsamples, buf, todo_realsamples * 4, 0, IntPtr.Zero, out bytes_written);
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outStatus.audio_samples += todo_realsamples;
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outStatus.audio_bytes += bytes_written;
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outStatus.audio_buffered_shorts = 0;
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}
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public unsafe void AddFrame(IVideoProvider source)
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|
{
|
|
if (parameters.width != source.BufferWidth
|
|
|| parameters.height != source.BufferHeight)
|
|
throw new InvalidOperationException("video buffer changed between start and now");
|
|
|
|
int todo = source.BufferHeight * source.BufferWidth;
|
|
int w = source.BufferWidth;
|
|
int h = source.BufferHeight;
|
|
|
|
IntPtr buf = GetStaticGlobalBuf(todo * 3);
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|
|
|
int[] buffer = source.GetVideoBuffer();
|
|
fixed (int* buffer_ptr = &buffer[0])
|
|
{
|
|
byte* bytes_ptr = (byte*)buf.ToPointer();
|
|
{
|
|
byte* bp = bytes_ptr;
|
|
|
|
for (int idx = w * h - w, y = 0; y < h; y++)
|
|
{
|
|
for (int x = 0; x < w; x++, idx++)
|
|
{
|
|
int r = (buffer[idx] >> 0) & 0xFF;
|
|
int g = (buffer[idx] >> 8) & 0xFF;
|
|
int b = (buffer[idx] >> 16) & 0xFF;
|
|
*bp++ = (byte)r;
|
|
*bp++ = (byte)g;
|
|
*bp++ = (byte)b;
|
|
}
|
|
idx -= w * 2;
|
|
}
|
|
|
|
int bytes_written;
|
|
int ret = Win32.AVIStreamWrite(pAviCompressedVideoStream, outStatus.video_frames, 1, new IntPtr(bytes_ptr), todo * 3, Win32.AVIIF_KEYFRAME, IntPtr.Zero, out bytes_written);
|
|
outStatus.video_bytes += bytes_written;
|
|
outStatus.video_frames++;
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
////TEST AVI
|
|
//AviWriter aw = new AviWriter();
|
|
//aw.SetVideoParameters(256, 256);
|
|
//aw.SetMovieParameters(60, 1);
|
|
//aw.OpenFile("d:\\bizhawk.avi");
|
|
//CreateHandle();
|
|
//var token = aw.AcquireVideoCodecToken(Handle);
|
|
//aw.SetVideoCodecToken(token);
|
|
//aw.OpenStreams();
|
|
|
|
//for (int i = 0; i < 100; i++)
|
|
//{
|
|
// TestVideoProvider video = new TestVideoProvider();
|
|
// Bitmap bmp = new Bitmap(256, 256, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
|
|
// using (Graphics g = Graphics.FromImage(bmp))
|
|
// {
|
|
// g.Clear(Color.Red);
|
|
// using (Font f = new Font(FontFamily.GenericMonospace, 10))
|
|
// g.DrawString(i.ToString(), f, Brushes.Black, 0, 0);
|
|
// }
|
|
// //bmp.Save(string.Format("c:\\dump\\{0}.bmp", i), ImageFormat.Bmp);
|
|
// for (int y = 0, idx = 0; y < 256; y++)
|
|
// for (int x = 0; x < 256; x++)
|
|
// video.buffer[idx++] = bmp.GetPixel(x, y).ToArgb();
|
|
// aw.AddFrame(video);
|
|
//}
|
|
//aw.CloseStreams();
|
|
//aw.CloseFile();
|
|
////-----
|