hedgewars/uVideoRec.pas
author Wuzzy <Wuzzy2@mail.ru>
Sat, 06 Oct 2018 00:23:27 +0200
changeset 13891 26ebbf9717fd
parent 13519 d8462cc9d42d
child 14220 3c36a4e66c82
permissions -rw-r--r--
Make sure AddChatString is only fed with shortstrings
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(*
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 * Hedgewars, a free turn based strategy game
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 * Copyright (c) 2004-2015 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  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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    {$linklib avwrapper}
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{$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, GLunit, SDLh, SysUtils, uUtils, uIO, uMisc, uConsts, uTypes, uDebug;
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type TAddFileLogRaw = procedure (s: pchar); cdecl;
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const AvwrapperLibName = 'libavwrapper';
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function 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): LongInt; cdecl; external AvwrapperLibName;
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function AVWrapper_Close: LongInt; cdecl; external AvwrapperLibName;
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function AVWrapper_WriteFrame(rgb: PByte): LongInt; cdecl; external AvwrapperLibName;
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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 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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    recordAudio: 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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    The comment must follow a particular format and must be in English.
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    This will be parsed by the frontend.
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    The frontend will parse lines of this format:
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        Key: Value
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    The key names will be localized in the frontend.
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    If you add a key/value pair, don't forget to add a localization
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    in the frontend! }
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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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    recordAudio:= (cAudioCodec <> 'no');
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    if recordAudio then
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        soundFilePath:= UserPathPrefix + '/VideoTemp/' + RecPrefix + '.sw'
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    else
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        soundFilePath:= '';
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    if checkFails(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) >= 0,
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        'AVWrapper_Init failed',
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        true) then exit(false);
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    numPixels:= cScreenWidth*cScreenHeight;
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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(RGB_Buffer, 4*numPixels);
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    Close(cameraFile);
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    if AVWrapper_Close() < 0 then
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        begin
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        AddFileLog('AVWrapper_Close() has failed.');
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        halt(HaltVideoRec);
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        end;
13519
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   160
{$IOCHECKS OFF}
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   161
    // Provoke IOResult to be set
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    FileSize(cameraFile);
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    if IOResult = 0 then
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        Erase(cameraFile)
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   165
    else
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        AddFileLog('Warning: Tried to delete the cameraFile but it was already deleted');
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   167
{$IOCHECKS ON}
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   168
    if recordAudio and FileExists(soundFilePath) then
13496
c7df0d96da81 Fix video recorder not working if sound disabled (fixes bug 200)
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        DeleteFile(soundFilePath);
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    SendIPC(_S'v'); // inform frontend that we finished
7180
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end;
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procedure EncodeFrame;
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var s: shortstring;
7180
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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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   179
    if AVWrapper_WriteFrame(RGB_Buffer) < 0 then
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        begin
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        AddFileLog('AVWrapper_WriteFrame(RGB_Buffer) has failed.');
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        halt(HaltVideoRec);
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        end;
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7376
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   185
    // inform frontend that we have encoded new frame
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   186
    s[0]:= #3;
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   187
    s[1]:= 'p'; // p for progress
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   188
    SDLNet_Write16(progress*10000 div maxProgress, @s[2]);
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   189
    SendIPC(s);
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   190
    inc(numFrames);
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   191
end;
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   192
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43f38923bc6e Fix some warnings
unc0rr
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   193
function LoadNextCameraPosition(out newRealTicks, newGameTicks: LongInt): Boolean;
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   194
var frame: TFrame = (realTicks: 0; gameTicks: 0; CamX: 0; CamY: 0; zoom: 0);
7180
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begin
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   196
    // we need to skip or duplicate frames to match target framerate
7379
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   197
    while Int64(curTime)*cVideoFramerateNum <= Int64(numFrames)*cVideoFramerateDen*1000 do
7376
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   198
    begin
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   199
    {$IOCHECKS OFF}
48b79b3ca592 rework saving of camera positions so there is no need to know framerate during prerecording.
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   200
        if eof(cameraFile) then
7392
bc3306c59a08 Correctly distinguish between game and real ticks while recording video,
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   201
            exit(false);
7376
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   202
        BlockRead(cameraFile, frame, 1);
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   203
    {$IOCHECKS ON}
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   204
        curTime:= frame.realTicks;
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   205
        WorldDx:= frame.CamX;
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   206
        WorldDy:= frame.CamY + cScreenHeight div 2;
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   207
        zoom:= frame.zoom*cScreenWidth;
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   208
        ZoomValue:= zoom;
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        inc(progress);
7392
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   210
        newRealTicks:= frame.realTicks;
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   211
        newGameTicks:= frame.gameTicks;
7376
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   212
    end;
7392
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    LoadNextCameraPosition:= true;
7180
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   214
end;
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   215
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baa69bd025d9 1. Implement new page in frontend with options for video recording.
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// Callback which records sound.
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   217
// This procedure may be called from different thread.
7180
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procedure RecordPostMix(udata: pointer; stream: PByte; len: LongInt); cdecl;
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   219
begin
7235
baa69bd025d9 1. Implement new page in frontend with options for video recording.
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   220
    udata:= udata; // avoid warning
7180
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   221
{$IOCHECKS OFF}
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   222
    BlockWrite(audioFile, stream^, len);
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   223
{$IOCHECKS ON}
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   224
end;
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   225
7306
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   226
procedure SaveThumbnail;
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   227
var thumbpath: shortstring;
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   228
    k: LongInt;
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   229
begin
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   230
    thumbpath:= '/VideoTemp/' + RecPrefix;
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   231
    AddFileLog('Saving thumbnail ' + thumbpath);
7386
e82a076df09b Fix bug with isInLag picture displayed at end of some videos.
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diff changeset
   232
    k:= max(max(cScreenWidth, cScreenHeight) div 400, 1); // here 400 is minimum size of thumbnail
10633
2f062fac5791 Add that "make screenshots of Land/LandPixels" thing for map creators
nemo
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diff changeset
   233
    MakeScreenshot(thumbpath, k, 0);
7306
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   234
    thumbnailSaved:= true;
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   235
end;
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   236
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   237
// copy file (free pascal doesn't have copy file function)
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   238
procedure CopyFile(src, dest: shortstring);
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   239
var inF, outF: file;
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   240
    buffer: array[0..1023] of byte;
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   241
    result: LongInt;
8370
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   242
    i: integer;
7392
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   243
begin
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   244
{$IOCHECKS OFF}
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martin_bede
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   245
    result:= 0; // avoid compiler hint and warning
0c79946e96f8 Fix tons of warnings
martin_bede
parents: 8279
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   246
    for i:= 0 to 1023 do
0c79946e96f8 Fix tons of warnings
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   247
        buffer[i]:= 0;
7392
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   248
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   249
    Assign(inF, src);
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   250
    Reset(inF, 1);
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   251
    if IOResult <> 0 then
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   252
    begin
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   253
        AddFileLog('Error: Could not read from ' + src);
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   254
        exit;
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   255
    end;
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   256
bc3306c59a08 Correctly distinguish between game and real ticks while recording video,
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   257
    Assign(outF, dest);
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   258
    Rewrite(outF, 1);
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   259
    if IOResult <> 0 then
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   260
    begin
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   261
        AddFileLog('Error: Could not write to ' + dest);
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   262
        exit;
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   263
    end;
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   264
bc3306c59a08 Correctly distinguish between game and real ticks while recording video,
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   265
    repeat
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   266
        BlockRead(inF, buffer, 1024, result);
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   267
        BlockWrite(outF, buffer, result);
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   268
    until result < 1024;
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   269
{$IOCHECKS ON}
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   270
end;
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   271
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5debd5fe526e 1. Add IFDEFs for video recording
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   272
procedure BeginPreRecording;
7180
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   273
var format: word;
7306
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   274
    filename: shortstring;
7280
fd707afbc3a2 pagevideos is now much better that before:
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   275
    frequency, channels: LongInt;
7180
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parents:
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   276
begin
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   277
    AddFileLog('BeginPreRecording');
7235
baa69bd025d9 1. Implement new page in frontend with options for video recording.
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diff changeset
   278
7369
46921fbe76d3 Move SDL_GetTicks() to another place, maybe this will fix sound desync.
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parents: 7363
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   279
    thumbnailSaved:= false;
7386
e82a076df09b Fix bug with isInLag picture displayed at end of some videos.
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parents: 7379
diff changeset
   280
    RecPrefix:= 'hw-' + FormatDateTime('YYYY-MM-DD_HH-mm-ss-z', Now());
7306
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   281
7392
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   282
    // If this video is recorded from demo executed directly (without frontend)
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   283
    // then we need to copy demo so that frontend will be able to find it later.
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   284
    if recordFileName <> '' then
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    begin
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        if GameType <> gmtDemo then // this is save and game demo is not recording, abort
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            exit;
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        CopyFile(recordFileName, UserPathPrefix + '/VideoTemp/' + RecPrefix + '.hwd');
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   289
    end;
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   290
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    if cIsSoundEnabled then
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        begin
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        Mix_QuerySpec(@frequency, @format, @channels);
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        AddFileLog('sound: frequency = ' + IntToStr(frequency) + ', format = ' + IntToStr(format) + ', channels = ' + IntToStr(channels));
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        if format <> $8010 then
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            begin
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            // TODO: support any audio format
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            AddFileLog('Error: Unexpected audio format ' + IntToStr(format));
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            exit;
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            end;
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   302
{$IOCHECKS OFF}
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        // create sound file
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        filename:= UserPathPrefix + '/VideoTemp/' + RecPrefix + '.sw';
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        Assign(audioFile, filename);
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        Rewrite(audioFile, 1);
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        if IOResult <> 0 then
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            begin
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            AddFileLog('Error: Could not write to ' + filename);
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            exit;
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   311
            end;
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        end;
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    // create file with camera positions
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    filename:= UserPathPrefix + '/VideoTemp/' + RecPrefix + '.txtout';
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    Assign(cameraFile, filename);
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    Rewrite(cameraFile);
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   318
    if IOResult <> 0 then
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        begin
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        AddFileLog('Error: Could not write to ' + filename);
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   321
        exit;
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   322
        end;
7280
fd707afbc3a2 pagevideos is now much better that before:
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   323
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   324
    if cIsSoundEnabled then
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   325
        begin
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   326
        // save audio parameters in sound file
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   327
        BlockWrite(audioFile, frequency, 4);
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   328
        BlockWrite(audioFile, channels, 4);
7180
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   329
{$IOCHECKS ON}
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   330
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   331
        // register callback for actual audio recording
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   332
        Mix_SetPostMix(@RecordPostMix, nil);
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   333
        end;
7180
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   334
7369
46921fbe76d3 Move SDL_GetTicks() to another place, maybe this will fix sound desync.
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   335
    startTime:= SDL_GetTicks();
7180
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    flagPrerecording:= true;
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   337
end;
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parents:
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   338
53ffc8853008 here it is
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   339
procedure StopPreRecording;
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   340
begin
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   341
    AddFileLog('StopPreRecording');
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   342
    flagPrerecording:= false;
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parents:
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   343
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   344
    if cIsSoundEnabled then
c7df0d96da81 Fix video recorder not working if sound disabled (fixes bug 200)
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   345
        begin
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   346
        // call SDL_LockAudio because RecordPostMix may be executing right now
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   347
        SDL_LockAudio();
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   348
        Close(audioFile);
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   349
        end;
7180
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   350
    Close(cameraFile);
13496
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   351
    if cIsSoundEnabled then
c7df0d96da81 Fix video recorder not working if sound disabled (fixes bug 200)
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   352
        begin
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   353
        Mix_SetPostMix(nil, nil);
c7df0d96da81 Fix video recorder not working if sound disabled (fixes bug 200)
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   354
        SDL_UnlockAudio();
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   355
        end;
7369
46921fbe76d3 Move SDL_GetTicks() to another place, maybe this will fix sound desync.
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diff changeset
   356
46921fbe76d3 Move SDL_GetTicks() to another place, maybe this will fix sound desync.
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   357
    if not thumbnailSaved then
46921fbe76d3 Move SDL_GetTicks() to another place, maybe this will fix sound desync.
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   358
        SaveThumbnail();
7180
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   359
end;
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parents:
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   360
53ffc8853008 here it is
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   361
procedure SaveCameraPosition;
7376
48b79b3ca592 rework saving of camera positions so there is no need to know framerate during prerecording.
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   362
var frame: TFrame;
7180
53ffc8853008 here it is
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   363
begin
7306
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   364
    if (not thumbnailSaved) and (ScreenFade = sfNone) then
3cff5c769509 Here they come - thumbnails.
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diff changeset
   365
        SaveThumbnail();
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diff changeset
   366
7376
48b79b3ca592 rework saving of camera positions so there is no need to know framerate during prerecording.
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   367
    frame.realTicks:= SDL_GetTicks() - startTime;
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diff changeset
   368
    frame.gameTicks:= GameTicks;
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diff changeset
   369
    frame.CamX:= WorldDx;
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diff changeset
   370
    frame.CamY:= WorldDy - cScreenHeight div 2;
48b79b3ca592 rework saving of camera positions so there is no need to know framerate during prerecording.
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diff changeset
   371
    frame.zoom:= zoom/cScreenWidth;
48b79b3ca592 rework saving of camera positions so there is no need to know framerate during prerecording.
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   372
    BlockWrite(cameraFile, frame, 1);
7180
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   373
end;
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parents:
diff changeset
   374
7850
fcbb024090a4 cleanup in initEverything and freeEverything
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   375
procedure initModule;
fcbb024090a4 cleanup in initEverything and freeEverything
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   376
begin
9543
1826b5315369 Fix bug 656 by using the right resolution values
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   377
    // we need to make sure these variables are initialized before the main loop
1826b5315369 Fix bug 656 by using the right resolution values
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   378
    // or the wrapper will keep the default values of preinit
9545
f7a55d8e8f4d min->max
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   379
    cScreenWidth:= max(cWindowedWidth, 640);
f7a55d8e8f4d min->max
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diff changeset
   380
    cScreenHeight:= max(cWindowedHeight, 480);
7850
fcbb024090a4 cleanup in initEverything and freeEverything
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   381
end;
fcbb024090a4 cleanup in initEverything and freeEverything
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   382
7180
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   383
procedure freeModule;
53ffc8853008 here it is
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parents:
diff changeset
   384
begin
53ffc8853008 here it is
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parents:
diff changeset
   385
    if flagPrerecording then
53ffc8853008 here it is
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parents:
diff changeset
   386
        StopPreRecording();
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parents:
diff changeset
   387
end;
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parents:
diff changeset
   388
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diff changeset
   389
end.
7286
068adc6948e3 remaining IFDEFs
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diff changeset
   390
068adc6948e3 remaining IFDEFs
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parents: 7280
diff changeset
   391
{$ENDIF} // USE_VIDEO_RECORDING