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Merge remote-tracking branch 'nekonomicon/png'

pull/2/head
Alibek Omarov 6 years ago
parent
eb22ff53c4 4eee187f1b
commit
bcb4c9a722
4 changed files with 634 additions and 2 deletions
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  1. 4
      engine/client/cl_cmds.c
  2. 58
      engine/common/imagelib/imagelib.h
  3. 572
      engine/common/imagelib/img_png.c
  4. 2
      engine/common/imagelib/img_utils.c

4
engine/client/cl_cmds.c
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@ -163,7 +163,7 @@ qboolean CL_ScreenshotGetName( int lastnum, char *filename )
lastnum -= c * 10; lastnum -= c * 10;
d = lastnum; d = lastnum;
Q_sprintf( filename, "scrshots/%s_shot%i%i%i%i.bmp", clgame.mapname, a, b, c, d ); Q_sprintf( filename, "scrshots/%s_shot%i%i%i%i.png", clgame.mapname, a, b, c, d );
return true; return true;
} }
@ -192,7 +192,7 @@ qboolean CL_SnapshotGetName( int lastnum, char *filename )
lastnum -= c * 10; lastnum -= c * 10;
d = lastnum; d = lastnum;
Q_sprintf( filename, "../%s_%i%i%i%i.bmp", clgame.mapname, a, b, c, d ); Q_sprintf( filename, "../%s_%i%i%i%i.png", clgame.mapname, a, b, c, d );
return true; return true;
} }

58
engine/common/imagelib/imagelib.h
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@ -154,6 +154,62 @@ typedef struct tga_s
/* /*
======================================================================== ========================================================================
.PNG image format (Portable Network Graphics)
========================================================================
*/
enum
{
PNG_CT_GREY,
PNG_CT_PALLETE = BIT(0),
PNG_CT_RGB = BIT(1),
PNG_CT_ALPHA = BIT(2),
PNG_CT_RGBA = (PNG_CT_RGB|PNG_CT_ALPHA)
} png_colortype;
enum
{
PNG_F_NONE,
PNG_F_SUB,
PNG_F_UP,
PNG_F_AVERAGE,
PNG_F_PAETH
} png_filter;
#pragma pack( push, 1 )
typedef struct png_ihdr_s
{
uint width;
uint height;
byte bitdepth;
byte colortype;
byte compression;
byte filter;
byte interlace;
} png_ihdr_t;
typedef struct png_s
{
byte sign[8];
uint ihdr_len;
byte ihdr_sign[4];
png_ihdr_t ihdr_chunk;
uint ihdr_crc32;
} png_t;
#pragma pack( pop )
typedef struct png_footer_s
{
uint idat_crc32;
uint iend_len;
byte iend_sign[4];
uint iend_crc32;
} png_footer_t;
/*
========================================================================
.DDS image format .DDS image format
======================================================================== ========================================================================
@ -301,6 +357,7 @@ qboolean Image_LoadMDL( const char *name, const byte *buffer, fs_offset_t filesi
qboolean Image_LoadSPR( const char *name, const byte *buffer, fs_offset_t filesize ); qboolean Image_LoadSPR( const char *name, const byte *buffer, fs_offset_t filesize );
qboolean Image_LoadTGA( const char *name, const byte *buffer, fs_offset_t filesize ); qboolean Image_LoadTGA( const char *name, const byte *buffer, fs_offset_t filesize );
qboolean Image_LoadBMP( const char *name, const byte *buffer, fs_offset_t filesize ); qboolean Image_LoadBMP( const char *name, const byte *buffer, fs_offset_t filesize );
qboolean Image_LoadPNG( const char *name, const byte *buffer, fs_offset_t filesize );
qboolean Image_LoadDDS( const char *name, const byte *buffer, fs_offset_t filesize ); qboolean Image_LoadDDS( const char *name, const byte *buffer, fs_offset_t filesize );
qboolean Image_LoadFNT( const char *name, const byte *buffer, fs_offset_t filesize ); qboolean Image_LoadFNT( const char *name, const byte *buffer, fs_offset_t filesize );
qboolean Image_LoadLMP( const char *name, const byte *buffer, fs_offset_t filesize ); qboolean Image_LoadLMP( const char *name, const byte *buffer, fs_offset_t filesize );
@ -311,6 +368,7 @@ qboolean Image_LoadPAL( const char *name, const byte *buffer, fs_offset_t filesi
// //
qboolean Image_SaveTGA( const char *name, rgbdata_t *pix ); qboolean Image_SaveTGA( const char *name, rgbdata_t *pix );
qboolean Image_SaveBMP( const char *name, rgbdata_t *pix ); qboolean Image_SaveBMP( const char *name, rgbdata_t *pix );
qboolean Image_SavePNG( const char *name, rgbdata_t *pix );
// //
// img_quant.c // img_quant.c

572
engine/common/imagelib/img_png.c
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@ -0,0 +1,572 @@
/*
img_png.c - png format load & save
Copyright (C) 2019 Andrey Akhmichin
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*/
#ifdef _WIN32
#include <winsock.h>
#else
#include <netinet/in.h>
#endif
#define MINIZ_HEADER_FILE_ONLY
#include "miniz.h"
#include "imagelib.h"
#include "mathlib.h"
static const char png_sign[] = {0x89, 'P', 'N', 'G', '\r', '\n', 0x1a, '\n'};
static const char ihdr_sign[] = {'I', 'H', 'D', 'R'};
static const char idat_sign[] = {'I', 'D', 'A', 'T'};
static const char iend_sign[] = {'I', 'E', 'N', 'D'};
static const int iend_crc32 = 0xAE426082;
/*
=============
Image_LoadPNG
=============
*/
qboolean Image_LoadPNG( const char *name, const byte *buffer, fs_offset_t filesize )
{
int ret;
short p, a, b, c, pa, pb, pc;
byte *buf_p, *pixbuf, *raw, *prior, *idat_buf = NULL, *uncompressed_buffer = NULL, *rowend;
uint chunk_len, crc32, crc32_check, oldsize = 0, newsize, rowsize;
uint uncompressed_size, pixel_size, i, y, filter_type, chunk_sign;
qboolean has_iend_chunk = false;
z_stream stream = {0};
png_t png_hdr;
if( filesize < sizeof( png_hdr ) )
return false;
buf_p = (byte *)buffer;
// get png header
memcpy( &png_hdr, buffer, sizeof( png_t ) );
// check png signature
if( memcmp( png_hdr.sign, png_sign, sizeof( png_sign ) ) )
{
Con_DPrintf( S_ERROR "Image_LoadPNG: Invalid PNG signature (%s)\n", name );
return false;
}
// convert IHDR chunk length to little endian
png_hdr.ihdr_len = ntohl( png_hdr.ihdr_len );
// check IHDR chunk length (valid value - 13)
if( png_hdr.ihdr_len != sizeof( png_ihdr_t ) )
{
Con_DPrintf( S_ERROR "Image_LoadPNG: Invalid IHDR chunk size (%s)\n", name );
return false;
}
// check IHDR chunk signature
if( memcmp( png_hdr.ihdr_sign, ihdr_sign, sizeof( ihdr_sign ) ) )
{
Con_DPrintf( S_ERROR "Image_LoadPNG: IHDR chunk corrupted (%s)\n", name );
return false;
}
// convert image width and height to little endian
png_hdr.ihdr_chunk.height = ntohl( png_hdr.ihdr_chunk.height );
png_hdr.ihdr_chunk.width = ntohl( png_hdr.ihdr_chunk.width );
if( png_hdr.ihdr_chunk.height == 0 || png_hdr.ihdr_chunk.width == 0 )
{
Con_DPrintf( S_ERROR "Image_LoadPNG: Invalid image size %dx%d (%s)\n", png_hdr.ihdr_chunk.width, png_hdr.ihdr_chunk.height, name );
return false;
}
if( png_hdr.ihdr_chunk.bitdepth != 8 )
{
Con_DPrintf( S_WARN "Image_LoadPNG: Only 8-bit images is supported (%s)\n", name );
return false;
}
if( png_hdr.ihdr_chunk.colortype != PNG_CT_RGB && png_hdr.ihdr_chunk.colortype != PNG_CT_RGBA )
{
Con_DPrintf( S_WARN "Image_LoadPNG: Only 8-bit RGB and RGBA images is supported (%s)\n", name );
return false;
}
if( png_hdr.ihdr_chunk.compression > 0 )
{
Con_DPrintf( S_ERROR "Image_LoadPNG: Unknown compression method (%s)\n", name );
return false;
}
if( png_hdr.ihdr_chunk.filter > 0 )
{
Con_DPrintf( S_ERROR "Image_LoadPNG: Unknown filter type (%s)\n", name );
return false;
}
if( png_hdr.ihdr_chunk.interlace == 1 )
{
Con_DPrintf( S_WARN "Image_LoadPNG: Adam7 Interlacing not supported (%s)\n", name );
return false;
}
if( png_hdr.ihdr_chunk.interlace > 0 )
{
Con_DPrintf( S_ERROR "Image_LoadPNG: Unknown interlacing type (%s)\n", name );
return false;
}
// calculate IHDR chunk CRC
CRC32_Init( &crc32_check );
CRC32_ProcessBuffer( &crc32_check, buf_p + sizeof( png_hdr.sign ) + sizeof( png_hdr.ihdr_len ), png_hdr.ihdr_len + sizeof( png_hdr.ihdr_sign ) );
crc32_check = CRC32_Final( crc32_check );
// check IHDR chunk CRC
if( ntohl( png_hdr.ihdr_crc32 ) != crc32_check )
{
Con_DPrintf( S_ERROR "Image_LoadPNG: IHDR chunk has wrong CRC32 sum (%s)\n", name );
return false;
}
// move pointer
buf_p += sizeof( png_hdr );
// find all critical chunks
while( !has_iend_chunk && ( buf_p - buffer ) < filesize )
{
// get chunk length
memcpy( &chunk_len, buf_p, sizeof( chunk_len ) );
// convert chunk length to little endian
chunk_len = ntohl( chunk_len );
if( chunk_len > INT_MAX )
{
Con_DPrintf( S_ERROR "Image_LoadPNG: Found chunk with wrong size (%s)\n", name );
Mem_Free( idat_buf );
return false;
}
// move pointer
buf_p += sizeof( chunk_sign );
// get all IDAT chunks data
if( !memcmp( buf_p, idat_sign, sizeof( idat_sign ) ) )
{
newsize = oldsize + chunk_len;
idat_buf = (byte *)Mem_Realloc( host.imagepool, idat_buf, newsize );
memcpy( idat_buf + oldsize, buf_p + sizeof( idat_sign ), chunk_len );
oldsize = newsize;
}
else if( !memcmp( buf_p, iend_sign, sizeof( iend_sign ) ) )
has_iend_chunk = true;
// calculate chunk CRC
CRC32_Init( &crc32_check );
CRC32_ProcessBuffer( &crc32_check, buf_p, chunk_len + sizeof( idat_sign ) );
crc32_check = CRC32_Final( crc32_check );
// move pointer
buf_p += sizeof( chunk_sign );
buf_p += chunk_len;
// get real chunk CRC
memcpy( &crc32, buf_p, sizeof( crc32 ) );
// check chunk CRC
if( ntohl( crc32 ) != crc32_check )
{
Con_DPrintf( S_ERROR "Image_LoadPNG: Found chunk with wrong CRC32 sum (%s)\n", name );
Mem_Free( idat_buf );
return false;
}
// move pointer
buf_p += sizeof( crc32 );
}
if( !has_iend_chunk )
{
Con_DPrintf( S_ERROR "Image_LoadPNG: IEND chunk not found (%s)\n", name );
Mem_Free( idat_buf );
return false;
}
if( chunk_len != 0 )
{
Con_DPrintf( S_ERROR "Image_LoadPNG: IEND chunk has wrong size (%s)\n", name );
Mem_Free( idat_buf );
}
if( oldsize == 0 )
{
Con_DPrintf( S_ERROR "Image_LoadPNG: Couldn't find IDAT chunks (%s)\n", name );
return false;
}
switch( png_hdr.ihdr_chunk.colortype )
{
case PNG_CT_RGB:
pixel_size = 3;
break;
case PNG_CT_RGBA:
pixel_size = 4;
break;
}
image.type = PF_RGBA_32; // always exctracted to 32-bit buffer
image.width = png_hdr.ihdr_chunk.width;
image.height = png_hdr.ihdr_chunk.height;
image.size = image.height * image.width * 4;
image.flags |= IMAGE_HAS_ALPHA | IMAGE_HAS_COLOR;
image.depth = 1;
rowsize = pixel_size * image.width;
uncompressed_size = image.height * ( rowsize + 1 ); // +1 for filter
uncompressed_buffer = Mem_Malloc( host.imagepool, uncompressed_size );
stream.next_in = idat_buf;
stream.total_in = stream.avail_in = newsize;
stream.next_out = uncompressed_buffer;
stream.total_out = stream.avail_out = uncompressed_size;
// uncompress image
if( inflateInit2( &stream, MAX_WBITS ) != Z_OK )
{
Con_DPrintf( S_ERROR "Image_LoadPNG: IDAT chunk decompression failed (%s)\n", name );
Mem_Free( uncompressed_buffer );
Mem_Free( idat_buf );
return false;
}
ret = inflate( &stream, Z_NO_FLUSH );
inflateEnd( &stream );
Mem_Free( idat_buf );
if( ret != Z_OK && ret != Z_STREAM_END )
{
Con_DPrintf( S_ERROR "Image_LoadPNG: IDAT chunk decompression failed (%s)\n", name );
Mem_Free( uncompressed_buffer );
return false;
}
prior = pixbuf = image.rgba = Mem_Malloc( host.imagepool, image.size );
i = 0;
raw = uncompressed_buffer;
if( png_hdr.ihdr_chunk.colortype == PNG_CT_RGB )
prior = pixbuf = raw;
filter_type = *raw++;
// decode adaptive filter
switch( filter_type )
{
case PNG_F_NONE:
case PNG_F_UP:
for( ; i < rowsize; i++ )
pixbuf[i] = raw[i];
break;
case PNG_F_SUB:
case PNG_F_PAETH:
for( ; i < pixel_size; i++ )
pixbuf[i] = raw[i];
for( ; i < rowsize; i++ )
pixbuf[i] = raw[i] + pixbuf[i - pixel_size];
break;
case PNG_F_AVERAGE:
for( ; i < pixel_size; i++ )
pixbuf[i] = raw[i];
for( ; i < rowsize; i++ )
pixbuf[i] = raw[i] + ( pixbuf[i - pixel_size] >> 1 );
break;
default:
Con_DPrintf( S_ERROR "Image_LoadPNG: Found unknown filter type (%s)\n", name );
Mem_Free( uncompressed_buffer );
Mem_Free( image.rgba );
return false;
}
for( y = 1; y < image.height; y++ )
{
i = 0;
pixbuf += rowsize;
raw += rowsize;
filter_type = *raw++;
switch( filter_type )
{
case PNG_F_NONE:
for( ; i < rowsize; i++ )
pixbuf[i] = raw[i];
break;
case PNG_F_SUB:
for( ; i < pixel_size; i++ )
pixbuf[i] = raw[i];
for( ; i < rowsize; i++ )
pixbuf[i] = raw[i] + pixbuf[i - pixel_size];
break;
case PNG_F_UP:
for( ; i < rowsize; i++ )
pixbuf[i] = raw[i] + prior[i];
break;
case PNG_F_AVERAGE:
for( ; i < pixel_size; i++ )
pixbuf[i] = raw[i] + ( prior[i] >> 1 );
for( ; i < rowsize; i++ )
pixbuf[i] = raw[i] + ( ( pixbuf[i - pixel_size] + prior[i] ) >> 1 );
break;
case PNG_F_PAETH:
for( ; i < pixel_size; i++ )
pixbuf[i] = raw[i] + prior[i];
for( ; i < rowsize; i++ )
{
a = pixbuf[i - pixel_size];
b = prior[i];
c = prior[i - pixel_size];
p = a + b - c;
pa = abs( p - a );
pb = abs( p - b );
pc = abs( p - c );
pixbuf[i] = raw[i];
if( pc < pa && pc < pb )
pixbuf[i] += c;
else if( pb < pa )
pixbuf[i] += b;
else
pixbuf[i] += a;
}
break;
default:
Con_DPrintf( S_ERROR "Image_LoadPNG: Found unknown filter type (%s)\n", name );
Mem_Free( uncompressed_buffer );
Mem_Free( image.rgba );
return false;
}
prior = pixbuf;
}
// convert RGB-to-RGBA
if( png_hdr.ihdr_chunk.colortype == PNG_CT_RGB )
{
pixbuf = image.rgba;
raw = uncompressed_buffer;
for( y = 0; y < image.height; y++ )
{
rowend = raw + rowsize;
for( ; raw < rowend; raw += pixel_size )
{
*pixbuf++ = raw[0];
*pixbuf++ = raw[1];
*pixbuf++ = raw[2];
*pixbuf++ = 0xFF;
}
}
}
Mem_Free( uncompressed_buffer );
return true;
}
/*
=============
Image_SavePNG
=============
*/
qboolean Image_SavePNG( const char *name, rgbdata_t *pix )
{
int ret;
uint y, outsize, pixel_size, filtered_size, idat_len;
uint ihdr_len, crc32, rowsize, big_idat_len;
byte *in, *buffer, *out, *filtered_buffer, *rowend;
z_stream stream = {0};
png_t png_hdr;
png_footer_t png_ftr;
if( FS_FileExists( name, false ) && !Image_CheckFlag( IL_ALLOW_OVERWRITE ))
return false; // already existed
if( !pix->buffer )
return false;
switch( pix->type )
{
case PF_RGB_24:
pixel_size = 3;
break;
case PF_RGBA_32:
pixel_size = 4;
break;
default:
return false;
}
rowsize = pix->width * pixel_size;
// get filtered image size
filtered_size = ( rowsize + 1 ) * pix->height;
out = filtered_buffer = Mem_Malloc( host.imagepool, filtered_size );
in = pix->buffer;
// apply adaptive filter to image
for( y = 0; y < pix->height; y++ )
{
*out++ = PNG_F_NONE;
rowend = in + rowsize;
for( ; in < rowend; )
{
*out++ = *in++;
}
}
// get IHDR chunk length
ihdr_len = sizeof( png_ihdr_t );
// predict IDAT chunk length
idat_len = deflateBound( NULL, filtered_size );
// calculate PNG filesize
outsize = sizeof( png_t );
outsize += sizeof( idat_len );
outsize += sizeof( idat_sign );
outsize += idat_len;
outsize += sizeof( png_footer_t );
// write PNG header
memcpy( png_hdr.sign, png_sign, sizeof( png_sign ) );
// write IHDR chunk length
png_hdr.ihdr_len = htonl( ihdr_len );
// write IHDR chunk signature
memcpy( png_hdr.ihdr_sign, ihdr_sign, sizeof( ihdr_sign ) );
// write image width
png_hdr.ihdr_chunk.width = htonl( pix->width );
// write image height
png_hdr.ihdr_chunk.height = htonl( pix->height );
// write image bitdepth
png_hdr.ihdr_chunk.bitdepth = 8;
// write image colortype
png_hdr.ihdr_chunk.colortype = ( pix->flags & IMAGE_HAS_ALPHA ) ? PNG_CT_RGBA : PNG_CT_RGB; // 8 bits of alpha
// write image comression method
png_hdr.ihdr_chunk.compression = 0;
// write image filter type
png_hdr.ihdr_chunk.filter = 0;
// write image interlacing
png_hdr.ihdr_chunk.interlace = 0;
// get IHDR chunk CRC
CRC32_Init( &crc32 );
CRC32_ProcessBuffer( &crc32, &png_hdr.ihdr_sign, ihdr_len + sizeof( ihdr_sign ) );
crc32 = CRC32_Final( crc32 );
// write IHDR chunk CRC
png_hdr.ihdr_crc32 = htonl( crc32 );
out = buffer = (byte *)Mem_Malloc( host.imagepool, outsize );
stream.next_in = filtered_buffer;
stream.avail_in = filtered_size;
stream.next_out = buffer + sizeof( png_hdr ) + sizeof( idat_len ) + sizeof( idat_sign );
stream.avail_out = idat_len;
// compress image
if( deflateInit( &stream, Z_BEST_COMPRESSION ) != Z_OK )
{
Con_DPrintf( S_ERROR "Image_SavePNG: deflateInit failed (%s)\n", name );
Mem_Free( filtered_buffer );
Mem_Free( buffer );
return false;
}
ret = deflate( &stream, Z_FINISH );
deflateEnd( &stream );
Mem_Free( filtered_buffer );
if( ret != Z_OK && ret != Z_STREAM_END )
{
Con_DPrintf( S_ERROR "Image_SavePNG: IDAT chunk compression failed (%s)\n", name );
Mem_Free( buffer );
return false;
}
// get final filesize
outsize -= idat_len;
idat_len = stream.total_out;
outsize += idat_len;
memcpy( out, &png_hdr, sizeof( png_t ) );
out += sizeof( png_t );
// convert IDAT chunk length to big endian
big_idat_len = htonl( idat_len );
// write IDAT chunk length
memcpy( out, &big_idat_len, sizeof( idat_len ) );
out += sizeof( idat_len );
// write IDAT chunk signature
memcpy( out, idat_sign, sizeof( idat_sign ) );
// calculate IDAT chunk CRC
CRC32_Init( &crc32 );
CRC32_ProcessBuffer( &crc32, out, idat_len + sizeof( idat_sign ) );
crc32 = CRC32_Final( crc32 );
out += sizeof( idat_sign );
out += idat_len;
// write IDAT chunk CRC
png_ftr.idat_crc32 = htonl( crc32 );
// write IEND chunk length
png_ftr.iend_len = 0;
// write IEND chunk signature
memcpy( png_ftr.iend_sign, iend_sign, sizeof( iend_sign ) );
// write IEND chunk CRC
png_ftr.iend_crc32 = htonl( iend_crc32 );
// write PNG footer to buffer
memcpy( out, &png_ftr, sizeof( png_ftr ) );
FS_WriteFile( name, buffer, outsize );
Mem_Free( buffer );
return true;
}

2
engine/common/imagelib/img_utils.c
Unescape View File

@ -107,6 +107,7 @@ static const loadpixformat_t load_game[] =
{ "%s%s.%s", "dds", Image_LoadDDS, IL_HINT_NO }, // dds for world and studio models { "%s%s.%s", "dds", Image_LoadDDS, IL_HINT_NO }, // dds for world and studio models
{ "%s%s.%s", "tga", Image_LoadTGA, IL_HINT_NO }, // hl vgui menus { "%s%s.%s", "tga", Image_LoadTGA, IL_HINT_NO }, // hl vgui menus
{ "%s%s.%s", "bmp", Image_LoadBMP, IL_HINT_NO }, // WON menu images { "%s%s.%s", "bmp", Image_LoadBMP, IL_HINT_NO }, // WON menu images
{ "%s%s.%s", "png", Image_LoadPNG, IL_HINT_NO }, // NightFire 007 menus
{ "%s%s.%s", "mip", Image_LoadMIP, IL_HINT_NO }, // hl textures from wad or buffer { "%s%s.%s", "mip", Image_LoadMIP, IL_HINT_NO }, // hl textures from wad or buffer
{ "%s%s.%s", "mdl", Image_LoadMDL, IL_HINT_HL }, // hl studio model skins { "%s%s.%s", "mdl", Image_LoadMDL, IL_HINT_HL }, // hl studio model skins
{ "%s%s.%s", "spr", Image_LoadSPR, IL_HINT_HL }, // hl sprite frames { "%s%s.%s", "spr", Image_LoadSPR, IL_HINT_HL }, // hl sprite frames
@ -134,6 +135,7 @@ static const savepixformat_t save_game[] =
{ {
{ "%s%s.%s", "tga", Image_SaveTGA }, // tga screenshots { "%s%s.%s", "tga", Image_SaveTGA }, // tga screenshots
{ "%s%s.%s", "bmp", Image_SaveBMP }, // bmp levelshots or screenshots { "%s%s.%s", "bmp", Image_SaveBMP }, // bmp levelshots or screenshots
{ "%s%s.%s", "png", Image_SavePNG }, // png screenshots
{ NULL, NULL, NULL } { NULL, NULL, NULL }
}; };

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