hedgewars/uVideoRec.pas
author Xeli
Sun, 28 Oct 2012 15:18:26 +0100
branchhedgeroid
changeset 7861 bc7b6aa5d67a
parent 7850 fcbb024090a4
child 8279 c03d64969112
permissions -rw-r--r--
add SDL as an dependency
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(*
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 * Hedgewars, a free turn based strategy game
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 * Copyright (c) 2004-2012 Andrey Korotaev <unC0Rr@gmail.com>
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; version 2 of the License
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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 *)
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{$INCLUDE "options.inc"}
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unit uVideoRec;
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{$IFNDEF USE_VIDEO_RECORDING}
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interface
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implementation
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end.
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{$ELSE}
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{$IFNDEF WIN32}
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    {$LINKLIB ../bin/libavwrapper.a}
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{$ENDIF}
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{$IFDEF DARWIN}
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    {$LINKLIB bz2}
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    {$LINKFRAMEWORK CoreVideo}
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    {$LINKFRAMEWORK VideoDecodeAcceleration}
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{$ENDIF}
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interface
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var flagPrerecording: boolean = false;
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function BeginVideoRecording: Boolean;
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function LoadNextCameraPosition(out newRealTicks, newGameTicks: LongInt): Boolean;
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procedure EncodeFrame;
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procedure StopVideoRecording;
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procedure BeginPreRecording;
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procedure StopPreRecording;
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procedure SaveCameraPosition;
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procedure initModule;
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procedure freeModule;
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implementation
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uses uVariables, uUtils, GLunit, SDLh, SysUtils, uIO, uMisc, uTypes;
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type TAddFileLogRaw = procedure (s: pchar); cdecl;
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procedure AVWrapper_Init(
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              AddLog: TAddFileLogRaw;
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              filename, desc, soundFile, format, vcodec, acodec: PChar;
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              width, height, framerateNum, framerateDen, vquality: LongInt); cdecl; external {$IFDEF WIN32}'libavwrapper.dll'{$ENDIF};
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procedure AVWrapper_Close; cdecl; external {$IFDEF WIN32}'libavwrapper.dll'{$ENDIF};
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procedure AVWrapper_WriteFrame( pY, pCb, pCr: PByte ); cdecl; external {$IFDEF WIN32}'libavwrapper.dll'{$ENDIF};
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type TFrame = record
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                  realTicks: LongWord;
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                  gameTicks: LongWord;
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                  CamX, CamY: LongInt;
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                  zoom: single;
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              end;
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var YCbCr_Planes: array[0..2] of PByte;
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    RGB_Buffer: PByte;
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    cameraFile: File of TFrame;
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    audioFile: File;
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    numPixels: LongWord;
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    startTime, numFrames, curTime, progress, maxProgress: LongWord;
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    soundFilePath: shortstring;
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    thumbnailSaved : Boolean;
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function BeginVideoRecording: Boolean;
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var filename, desc: shortstring;
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begin
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    AddFileLog('BeginVideoRecording');
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{$IOCHECKS OFF}
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    // open file with prerecorded camera positions
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    filename:= UserPathPrefix + '/VideoTemp/' + RecPrefix + '.txtin';
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    Assign(cameraFile, filename);
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    Reset(cameraFile);
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    maxProgress:= FileSize(cameraFile);
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    if IOResult <> 0 then
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    begin
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        AddFileLog('Error: Could not read from ' + filename);
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        exit(false);
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    end;
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{$IOCHECKS ON}
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    // store some description in output file
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    desc:= '';
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    if UserNick <> '' then
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        desc:= desc + 'Player: ' + UserNick + #10;
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    if recordFileName <> '' then
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        desc:= desc + 'Record: ' + recordFileName + #10;
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    if cMapName <> '' then
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        desc:= desc + 'Map: ' + cMapName + #10;
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    if Theme <> '' then
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        desc:= desc + 'Theme: ' + Theme + #10;
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    desc:= desc + 'prefix[' + RecPrefix + ']prefix';
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    filename:= UserPathPrefix + '/VideoTemp/' + RecPrefix;
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    soundFilePath:= UserPathPrefix + '/VideoTemp/' + RecPrefix + '.sw';
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    AVWrapper_Init(@AddFileLogRaw
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        , PChar(ansistring(filename))
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        , PChar(ansistring(desc))
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        , PChar(ansistring(soundFilePath))
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        , PChar(ansistring(cAVFormat))
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        , PChar(ansistring(cVideoCodec))
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        , PChar(ansistring(cAudioCodec))
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        , cScreenWidth, cScreenHeight, cVideoFramerateNum, cVideoFramerateDen, cVideoQuality);
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    numPixels:= cScreenWidth*cScreenHeight;
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    YCbCr_Planes[0]:= GetMem(numPixels);
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    YCbCr_Planes[1]:= GetMem(numPixels div 4);
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    YCbCr_Planes[2]:= GetMem(numPixels div 4);
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    if (YCbCr_Planes[0] = nil) or (YCbCr_Planes[1] = nil) or (YCbCr_Planes[2] = nil) then
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    begin
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        AddFileLog('Error: Could not allocate memory for video recording (YCbCr buffer).');
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        exit(false);
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    end;
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    RGB_Buffer:= GetMem(4*numPixels);
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    if RGB_Buffer = nil then
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    begin
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        AddFileLog('Error: Could not allocate memory for video recording (RGB buffer).');
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        exit(false);
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    end;
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    curTime:= 0;
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    numFrames:= 0;
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    progress:= 0;
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    BeginVideoRecording:= true;
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end;
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procedure StopVideoRecording;
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begin
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    AddFileLog('StopVideoRecording');
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    FreeMem(YCbCr_Planes[0], numPixels);
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    FreeMem(YCbCr_Planes[1], numPixels div 4);
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    FreeMem(YCbCr_Planes[2], numPixels div 4);
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    FreeMem(RGB_Buffer, 4*numPixels);
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    Close(cameraFile);
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    AVWrapper_Close();
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    Erase(cameraFile);
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    DeleteFile(soundFilePath);
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    SendIPC(_S'v'); // inform frontend that we finished
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end;
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   163
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function pixel(x, y, color: LongInt): LongInt;
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begin
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    pixel:= RGB_Buffer[(cScreenHeight-y-1)*cScreenWidth*4 + x*4 + color];
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end;
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   168
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procedure EncodeFrame;
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var x, y, r, g, b: LongInt;
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    s: shortstring;
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begin
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    // read pixels from OpenGL
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    glReadPixels(0, 0, cScreenWidth, cScreenHeight, GL_RGBA, GL_UNSIGNED_BYTE, RGB_Buffer);
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    // convert to YCbCr 4:2:0 format
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    // Y
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    for y := 0 to cScreenHeight-1 do
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        for x := 0 to cScreenWidth-1 do
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            YCbCr_Planes[0][y*cScreenWidth + x]:= Byte(16 + ((16828*pixel(x,y,0) + 33038*pixel(x,y,1) + 6416*pixel(x,y,2)) shr 16));
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   181
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    // Cb and Cr
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    for y := 0 to cScreenHeight div 2 - 1 do
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        for x := 0 to cScreenWidth div 2 - 1 do
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   185
        begin
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   186
            r:= pixel(2*x,2*y,0) + pixel(2*x+1,2*y,0) + pixel(2*x,2*y+1,0) + pixel(2*x+1,2*y+1,0);
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            g:= pixel(2*x,2*y,1) + pixel(2*x+1,2*y,1) + pixel(2*x,2*y+1,1) + pixel(2*x+1,2*y+1,1);
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   188
            b:= pixel(2*x,2*y,2) + pixel(2*x+1,2*y,2) + pixel(2*x,2*y+1,2) + pixel(2*x+1,2*y+1,2);
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   189
            YCbCr_Planes[1][y*(cScreenWidth div 2) + x]:= Byte(128 + ((-2428*r - 4768*g + 7196*b) shr 16));
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            YCbCr_Planes[2][y*(cScreenWidth div 2) + x]:= Byte(128 + (( 7196*r - 6026*g - 1170*b) shr 16));
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   191
        end;
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   192
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   193
    AVWrapper_WriteFrame(YCbCr_Planes[0], YCbCr_Planes[1], YCbCr_Planes[2]);
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   194
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    // inform frontend that we have encoded new frame
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    s[0]:= #3;
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   197
    s[1]:= 'p'; // p for progress
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   198
    SDLNet_Write16(progress*10000 div maxProgress, @s[2]);
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   199
    SendIPC(s);
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    inc(numFrames);
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   201
end;
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   202
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unc0rr
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   203
function LoadNextCameraPosition(out newRealTicks, newGameTicks: LongInt): Boolean;
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var frame: TFrame;
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begin
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   206
    // we need to skip or duplicate frames to match target framerate
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   207
    while Int64(curTime)*cVideoFramerateNum <= Int64(numFrames)*cVideoFramerateDen*1000 do
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   208
    begin
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   209
    {$IOCHECKS OFF}
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   210
        if eof(cameraFile) then
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   211
            exit(false);
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   212
        BlockRead(cameraFile, frame, 1);
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   213
    {$IOCHECKS ON}
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   214
        curTime:= frame.realTicks;
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   215
        WorldDx:= frame.CamX;
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   216
        WorldDy:= frame.CamY + cScreenHeight div 2;
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   217
        zoom:= frame.zoom*cScreenWidth;
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   218
        ZoomValue:= zoom;
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   219
        inc(progress);
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   220
        newRealTicks:= frame.realTicks;
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   221
        newGameTicks:= frame.gameTicks;
7376
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   222
    end;
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   223
    LoadNextCameraPosition:= true;
7180
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   224
end;
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   225
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   226
// Callback which records sound.
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   227
// This procedure may be called from different thread.
7180
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   228
procedure RecordPostMix(udata: pointer; stream: PByte; len: LongInt); cdecl;
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   229
begin
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   230
    udata:= udata; // avoid warning
7180
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   231
{$IOCHECKS OFF}
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   232
    BlockWrite(audioFile, stream^, len);
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   233
{$IOCHECKS ON}
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   234
end;
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   235
7306
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   236
procedure SaveThumbnail;
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   237
var thumbpath: shortstring;
3cff5c769509 Here they come - thumbnails.
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   238
    k: LongInt;
3cff5c769509 Here they come - thumbnails.
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   239
begin
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   240
    thumbpath:= '/VideoTemp/' + RecPrefix;
3cff5c769509 Here they come - thumbnails.
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   241
    AddFileLog('Saving thumbnail ' + thumbpath);
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   242
    k:= max(max(cScreenWidth, cScreenHeight) div 400, 1); // here 400 is minimum size of thumbnail
7306
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   243
    MakeScreenshot(thumbpath, k);
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   244
    thumbnailSaved:= true;
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   245
end;
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   246
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   247
// copy file (free pascal doesn't have copy file function)
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   248
procedure CopyFile(src, dest: shortstring);
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   249
var inF, outF: file;
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   250
    buffer: array[0..1023] of byte;
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   251
    result: LongInt;
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   252
begin
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   253
{$IOCHECKS OFF}
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   254
    result:= 0; // avoid compiler hint
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   255
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   256
    Assign(inF, src);
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   257
    Reset(inF, 1);
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   258
    if IOResult <> 0 then
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   259
    begin
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   260
        AddFileLog('Error: Could not read from ' + src);
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   261
        exit;
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   262
    end;
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   263
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   264
    Assign(outF, dest);
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   265
    Rewrite(outF, 1);
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   266
    if IOResult <> 0 then
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   267
    begin
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   268
        AddFileLog('Error: Could not write to ' + dest);
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   269
        exit;
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   270
    end;
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   271
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   272
    repeat
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   273
        BlockRead(inF, buffer, 1024, result);
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   274
        BlockWrite(outF, buffer, result);
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   275
    until result < 1024;
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   276
{$IOCHECKS ON}
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   277
end;
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   278
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5debd5fe526e 1. Add IFDEFs for video recording
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   279
procedure BeginPreRecording;
7180
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   280
var format: word;
7306
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   281
    filename: shortstring;
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   282
    frequency, channels: LongInt;
7180
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   283
begin
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   284
    AddFileLog('BeginPreRecording');
7235
baa69bd025d9 1. Implement new page in frontend with options for video recording.
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diff changeset
   285
7369
46921fbe76d3 Move SDL_GetTicks() to another place, maybe this will fix sound desync.
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diff changeset
   286
    thumbnailSaved:= false;
7386
e82a076df09b Fix bug with isInLag picture displayed at end of some videos.
Stepan777 <stepik-777@mail.ru>
parents: 7379
diff changeset
   287
    RecPrefix:= 'hw-' + FormatDateTime('YYYY-MM-DD_HH-mm-ss-z', Now());
7306
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   288
7392
bc3306c59a08 Correctly distinguish between game and real ticks while recording video,
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   289
    // If this video is recorded from demo executed directly (without frontend)
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   290
    // then we need to copy demo so that frontend will be able to find it later.
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   291
    if recordFileName <> '' then
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   292
    begin
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   293
        if GameType <> gmtDemo then // this is save and game demo is not recording, abort
bc3306c59a08 Correctly distinguish between game and real ticks while recording video,
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   294
            exit;
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   295
        CopyFile(recordFileName, UserPathPrefix + '/VideoTemp/' + RecPrefix + '.hwd');
bc3306c59a08 Correctly distinguish between game and real ticks while recording video,
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   296
    end;
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   297
7180
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   298
    Mix_QuerySpec(@frequency, @format, @channels);
7280
fd707afbc3a2 pagevideos is now much better that before:
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   299
    AddFileLog('sound: frequency = ' + IntToStr(frequency) + ', format = ' + IntToStr(format) + ', channels = ' + IntToStr(channels));
7180
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   300
    if format <> $8010 then
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   301
    begin
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   302
        // TODO: support any audio format
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   303
        AddFileLog('Error: Unexpected audio format ' + IntToStr(format));
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5debd5fe526e 1. Add IFDEFs for video recording
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   304
        exit;
7180
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   305
    end;
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   306
53ffc8853008 here it is
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parents:
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   307
{$IOCHECKS OFF}
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baa69bd025d9 1. Implement new page in frontend with options for video recording.
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   308
    // create sound file
7306
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   309
    filename:= UserPathPrefix + '/VideoTemp/' + RecPrefix + '.sw';
7180
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   310
    Assign(audioFile, filename);
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   311
    Rewrite(audioFile, 1);
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   312
    if IOResult <> 0 then
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   313
    begin
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   314
        AddFileLog('Error: Could not write to ' + filename);
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   315
        exit;
7180
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   316
    end;
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parents:
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   317
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baa69bd025d9 1. Implement new page in frontend with options for video recording.
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   318
    // create file with camera positions
7306
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   319
    filename:= UserPathPrefix + '/VideoTemp/' + RecPrefix + '.txtout';
7180
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   320
    Assign(cameraFile, filename);
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   321
    Rewrite(cameraFile);
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   322
    if IOResult <> 0 then
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parents:
diff changeset
   323
    begin
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parents:
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   324
        AddFileLog('Error: Could not write to ' + filename);
7198
5debd5fe526e 1. Add IFDEFs for video recording
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   325
        exit;
7180
53ffc8853008 here it is
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parents:
diff changeset
   326
    end;
7280
fd707afbc3a2 pagevideos is now much better that before:
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diff changeset
   327
7369
46921fbe76d3 Move SDL_GetTicks() to another place, maybe this will fix sound desync.
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diff changeset
   328
    // save audio parameters in sound file
7280
fd707afbc3a2 pagevideos is now much better that before:
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diff changeset
   329
    BlockWrite(audioFile, frequency, 4);
fd707afbc3a2 pagevideos is now much better that before:
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diff changeset
   330
    BlockWrite(audioFile, channels, 4);
7180
53ffc8853008 here it is
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parents:
diff changeset
   331
{$IOCHECKS ON}
53ffc8853008 here it is
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parents:
diff changeset
   332
53ffc8853008 here it is
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parents:
diff changeset
   333
    // register callback for actual audio recording
53ffc8853008 here it is
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parents:
diff changeset
   334
    Mix_SetPostMix(@RecordPostMix, nil);
53ffc8853008 here it is
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parents:
diff changeset
   335
7369
46921fbe76d3 Move SDL_GetTicks() to another place, maybe this will fix sound desync.
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parents: 7363
diff changeset
   336
    startTime:= SDL_GetTicks();
7180
53ffc8853008 here it is
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diff changeset
   337
    flagPrerecording:= true;
53ffc8853008 here it is
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parents:
diff changeset
   338
end;
53ffc8853008 here it is
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parents:
diff changeset
   339
53ffc8853008 here it is
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parents:
diff changeset
   340
procedure StopPreRecording;
53ffc8853008 here it is
Stepan777 <stepik-777@mail.ru>
parents:
diff changeset
   341
begin
53ffc8853008 here it is
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parents:
diff changeset
   342
    AddFileLog('StopPreRecording');
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parents:
diff changeset
   343
    flagPrerecording:= false;
53ffc8853008 here it is
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parents:
diff changeset
   344
53ffc8853008 here it is
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parents:
diff changeset
   345
    // call SDL_LockAudio because RecordPostMix may be executing right now
53ffc8853008 here it is
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parents:
diff changeset
   346
    SDL_LockAudio();
53ffc8853008 here it is
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parents:
diff changeset
   347
    Close(audioFile);
53ffc8853008 here it is
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parents:
diff changeset
   348
    Close(cameraFile);
53ffc8853008 here it is
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parents:
diff changeset
   349
    Mix_SetPostMix(nil, nil);
53ffc8853008 here it is
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parents:
diff changeset
   350
    SDL_UnlockAudio();
7369
46921fbe76d3 Move SDL_GetTicks() to another place, maybe this will fix sound desync.
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parents: 7363
diff changeset
   351
46921fbe76d3 Move SDL_GetTicks() to another place, maybe this will fix sound desync.
Stepan777 <stepik-777@mail.ru>
parents: 7363
diff changeset
   352
    if not thumbnailSaved then
46921fbe76d3 Move SDL_GetTicks() to another place, maybe this will fix sound desync.
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parents: 7363
diff changeset
   353
        SaveThumbnail();
7180
53ffc8853008 here it is
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parents:
diff changeset
   354
end;
53ffc8853008 here it is
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parents:
diff changeset
   355
53ffc8853008 here it is
Stepan777 <stepik-777@mail.ru>
parents:
diff changeset
   356
procedure SaveCameraPosition;
7376
48b79b3ca592 rework saving of camera positions so there is no need to know framerate during prerecording.
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diff changeset
   357
var frame: TFrame;
7180
53ffc8853008 here it is
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parents:
diff changeset
   358
begin
7306
3cff5c769509 Here they come - thumbnails.
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parents: 7286
diff changeset
   359
    if (not thumbnailSaved) and (ScreenFade = sfNone) then
3cff5c769509 Here they come - thumbnails.
Stepan777 <stepik-777@mail.ru>
parents: 7286
diff changeset
   360
        SaveThumbnail();
3cff5c769509 Here they come - thumbnails.
Stepan777 <stepik-777@mail.ru>
parents: 7286
diff changeset
   361
7376
48b79b3ca592 rework saving of camera positions so there is no need to know framerate during prerecording.
Stepan777 <stepik-777@mail.ru>
parents: 7369
diff changeset
   362
    frame.realTicks:= SDL_GetTicks() - startTime;
48b79b3ca592 rework saving of camera positions so there is no need to know framerate during prerecording.
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parents: 7369
diff changeset
   363
    frame.gameTicks:= GameTicks;
48b79b3ca592 rework saving of camera positions so there is no need to know framerate during prerecording.
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parents: 7369
diff changeset
   364
    frame.CamX:= WorldDx;
48b79b3ca592 rework saving of camera positions so there is no need to know framerate during prerecording.
Stepan777 <stepik-777@mail.ru>
parents: 7369
diff changeset
   365
    frame.CamY:= WorldDy - cScreenHeight div 2;
48b79b3ca592 rework saving of camera positions so there is no need to know framerate during prerecording.
Stepan777 <stepik-777@mail.ru>
parents: 7369
diff changeset
   366
    frame.zoom:= zoom/cScreenWidth;
48b79b3ca592 rework saving of camera positions so there is no need to know framerate during prerecording.
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parents: 7369
diff changeset
   367
    BlockWrite(cameraFile, frame, 1);
7180
53ffc8853008 here it is
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parents:
diff changeset
   368
end;
53ffc8853008 here it is
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parents:
diff changeset
   369
7850
fcbb024090a4 cleanup in initEverything and freeEverything
koda
parents: 7816
diff changeset
   370
procedure initModule;
fcbb024090a4 cleanup in initEverything and freeEverything
koda
parents: 7816
diff changeset
   371
begin
fcbb024090a4 cleanup in initEverything and freeEverything
koda
parents: 7816
diff changeset
   372
end;
fcbb024090a4 cleanup in initEverything and freeEverything
koda
parents: 7816
diff changeset
   373
7180
53ffc8853008 here it is
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parents:
diff changeset
   374
procedure freeModule;
53ffc8853008 here it is
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parents:
diff changeset
   375
begin
53ffc8853008 here it is
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parents:
diff changeset
   376
    if flagPrerecording then
53ffc8853008 here it is
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parents:
diff changeset
   377
        StopPreRecording();
53ffc8853008 here it is
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parents:
diff changeset
   378
end;
53ffc8853008 here it is
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parents:
diff changeset
   379
53ffc8853008 here it is
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parents:
diff changeset
   380
end.
7286
068adc6948e3 remaining IFDEFs
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parents: 7280
diff changeset
   381
068adc6948e3 remaining IFDEFs
Stepan777 <stepik-777@mail.ru>
parents: 7280
diff changeset
   382
{$ENDIF} // USE_VIDEO_RECORDING