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Allow setting png compression level in screenshot command

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The level is between 0 and 10, use like
screenshot png 6
This commit is contained in:
Daniel Gibson 2017-03-13 00:03:13 +01:00
parent bbf36746c8
commit b6f68cd532
1 changed files with 38 additions and 4 deletions
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42
src/backends/generic/vid.c
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@ -41,6 +41,28 @@
#include "../../client/header/client.h"
#include "../../client/header/keyboard.h"
#ifdef ZIP
// if we build with zip support, zlib is available and we can use that for better PNG compression
#include <zlib.h>
static unsigned char*
compress_for_stbiw(unsigned char *data, int data_len, int *out_len, int quality)
{
uLongf bufSize = compressBound(data_len);
unsigned char* buf = malloc(bufSize);
if(buf == NULL) return NULL;
if(compress2(buf, &bufSize, data, data_len, quality) != Z_OK)
{
free(buf);
return NULL;
}
*out_len = bufSize;
return buf;
}
#define STBIW_ZLIB_COMPRESS compress_for_stbiw
#endif // ZIP
#define STB_IMAGE_WRITE_IMPLEMENTATION
#include "header/stb_image_write.h"
@ -218,13 +240,22 @@ void VID_WriteScreenshot( int width, int height, int comp, const void* data )
{
if(q[i] < '0' || q[i] > '9')
{
Com_Printf("the (optional!) third argument to 'screenshot' is jpg quality, a number between 1 and 100!\n");
Com_Printf("the (optional!) third argument to 'screenshot' is jpg quality, a number between 1 and 100\n");
Com_Printf(" or png compression level, between 0 and 10!\n");
return;
}
}
quality = atoi(q);
if(quality < 1) quality = 1;
else if(quality > 100) quality = 100;
if(format == 2) // png
{
if(quality < 0) quality = 0;
else if(quality > 10) quality = 10;
}
else if(format == 3) // jpg
{
if(quality < 1) quality = 1;
else if(quality > 100) quality = 100;
}
}
}
@ -254,7 +285,10 @@ void VID_WriteScreenshot( int width, int height, int comp, const void* data )
{
case 0: success = stbi_write_tga(checkname, width, height, comp, data); break;
case 1: success = stbi_write_bmp(checkname, width, height, comp, data); break;
case 2: success = stbi_write_png(checkname, width, height, comp, data, 0); break;
case 2:
stbi_png_level = (quality <= 10) ? quality : 7;
success = stbi_write_png(checkname, width, height, comp, data, 0);
break;
case 3: success = stbi_write_jpg(checkname, width, height, comp, data, quality); break;
}