raze/source/core/screenshot.cpp
2023-10-08 09:15:32 +02:00

131 lines
3.7 KiB
C++

/*
** screenshot.cpp
**
**---------------------------------------------------------------------------
** Copyright 2019 Christoph Oelckers
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/
#include "version.h"
#include "m_png.h"
#include "i_specialpaths.h"
#include "m_argv.h"
#include "cmdlib.h"
#include "gamecontrol.h"
#include "printf.h"
#include "c_dispatch.h"
#include "v_video.h"
EXTERN_CVAR(Float, png_gamma)
//
// screencapture
//
static FileWriter *opennextfile(const char *fn)
{
static int count = 0;
FString name;
do
{
name.Format(fn, count++);
} while (FileExists(name));
return FileWriter::Open(name.GetChars());
}
CVAR(String, screenshotname, "", CVAR_ARCHIVE) // not GLOBALCONFIG - allow setting this per game.
CVAR(String, screenshot_dir, "", CVAR_ARCHIVE) // same here.
//
// WritePNGfile
//
static void WritePNGfile(FileWriter* file, const uint8_t* buffer, const PalEntry* palette,
ESSType color_type, int width, int height, int pitch, float gamma)
{
FStringf software(GAMENAME " %s", GetVersionString());
if (!M_CreatePNG(file, buffer, palette, color_type, width, height, pitch, gamma) ||
!M_AppendPNGText(file, "Software", software.GetChars()) ||
!M_FinishPNG(file))
{
Printf("Failed writing screenshot\n");
}
}
static int SaveScreenshot()
{
PalEntry Palette[256];
size_t dirlen;
FString autoname = Args->CheckValue("-shotdir");
if (autoname.IsEmpty())
{
autoname = screenshot_dir;
}
dirlen = autoname.Len();
if (dirlen == 0)
{
autoname = M_GetScreenshotsPath();
dirlen = autoname.Len();
}
if (dirlen > 0)
{
if (autoname[dirlen - 1] != '/' && autoname[dirlen - 1] != '\\')
{
autoname += '/';
}
}
autoname = NicePath(autoname.GetChars());
CreatePath(autoname.GetChars());
if (**screenshotname) autoname << screenshotname;
else autoname << currentGame;
autoname << "_%04d.png";
FileWriter *fil = opennextfile(autoname.GetChars());
if (fil == nullptr)
{
return -1;
}
float gamma;
int pitch;
ESSType ctype;
auto imgBuf = screen->GetScreenshotBuffer(pitch, ctype, gamma);
WritePNGfile(fil, imgBuf.Data(), Palette, ctype, screen->GetWidth(), screen->GetHeight(), pitch, gamma);
delete fil;
Printf("screenshot saved\n");
return 0;
}
CCMD(screenshot)
{
SaveScreenshot();
}