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Remove mpng leftovers

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This commit is contained in:
twinaphex 2015-02-21 02:46:58 +01:00
parent 28cdf2c93a
commit 82432ca5d5
2 changed files with 0 additions and 645 deletions
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102
gfx/image/image_mpng.c
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@ -1,102 +0,0 @@
/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2015 - Daniel De Matteis
*
* RetroArch 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 Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch 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.
*
* You should have received a copy of the GNU General Public License along with RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
#include "../../config.h"
#endif
#include "image.h"
#include "../../file_ops.h"
#include <stdlib.h>
#include <string.h>
#include <stddef.h>
#include "../../general.h"
#include <formats/mpng.h>
#include <file/nbio.h>
void texture_image_free(struct texture_image *img)
{
if (!img)
return;
free(img->pixels);
memset(img, 0, sizeof(*img));
}
bool texture_image_load(struct texture_image *out_img, const char *path)
{
size_t len;
bool looped = false;
bool ret = false;
bool use_rgba = driver.gfx_use_rgba;
unsigned a_shift = 24;
unsigned r_shift = use_rgba ? 0 : 16;
unsigned g_shift = 8;
unsigned b_shift = use_rgba ? 16 : 0;
void *ptr = NULL;
struct mpng_image img = {0};
struct nbio_t* read = nbio_open(path, NBIO_READ);
if (!read)
return false;
ptr = nbio_get_ptr(read, &len);
nbio_begin_read(read);
while (!nbio_iterate(read)) {}
ptr = nbio_get_ptr(read, &len);
if (!png_decode(ptr, len, &img, FMT_ARGB8888))
goto error;
out_img->width = img.width;
out_img->height = img.height;
out_img->pixels = img.pixels;
/* This is quite uncommon. */
if (a_shift != 24 || r_shift != 16 || g_shift != 8 || b_shift != 0)
{
uint32_t i;
uint32_t num_pixels = out_img->width * out_img->height;
uint32_t *pixels = (uint32_t*)out_img->pixels;
for (i = 0; i < num_pixels; i++)
{
uint32_t col = pixels[i];
uint8_t a = (uint8_t)(col >> 24);
uint8_t r = (uint8_t)(col >> 16);
uint8_t g = (uint8_t)(col >> 8);
uint8_t b = (uint8_t)(col >> 0);
pixels[i] = (a << a_shift) |
(r << r_shift) | (g << g_shift) | (b << b_shift);
}
}
nbio_free(read);
return true;
error:
if (read)
nbio_free(read);
return false;
}

543
libretro-common/formats/mpng/mpng_decode.c
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@ -1,543 +0,0 @@
#include <stdint.h>
#include <stdlib.h>
#include <boolean.h>
#include <string.h>
#include <formats/mpng.h>
#ifndef HAVE_ZLIB
# define MINIZ_HEADER_FILE_ONLY
# include "miniz.c"
static void tinfl_deinit(tinfl_decompressor* r) {}
#else
# include <zlib.h>
typedef z_stream tinfl_decompressor;
typedef int tinfl_status;
static uint32_t mz_crc32(uint32_t crc,
const uint8_t* buf, size_t len)
{
return crc32(crc, buf, len);
}
enum {
TINFL_FLAG_PARSE_ZLIB_HEADER = 1,
TINFL_FLAG_HAS_MORE_INPUT = 2,
TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF = 4,
TINFL_FLAG_COMPUTE_ADLER32 = 8,
TINFL_STATUS_DONE = Z_STREAM_END
};
static void tinfl_init(tinfl_decompressor *r)
{
memset(r, 0, sizeof(*r));
inflateInit(r);
}
static tinfl_status tinfl_decompress(tinfl_decompressor* r,
const uint8_t * pIn_buf_next, size_t* pIn_buf_size,
uint8_t * pOut_buf_start, uint8_t * pOut_buf_next, size_t* pOut_buf_size,
uint32_t decomp_flags)
{
r->next_in = (Bytef*)pIn_buf_next;
r->avail_in = *pIn_buf_size;
r->next_out = pOut_buf_next;
r->avail_out = *pOut_buf_size;
return inflate(r, (decomp_flags & TINFL_FLAG_HAS_MORE_INPUT)
? Z_NO_FLUSH : Z_SYNC_FLUSH);
}
static void tinfl_deinit(tinfl_decompressor* r)
{
if (r)
inflateEnd(r);
}
#endif
uint32_t read8r(const uint8_t* source)
{
return *source;
}
uint32_t read24r(const uint8_t* source)
{
return ((source[0] << 16) | (source[1] << 8) | (source[2] << 0));
}
uint32_t read32r(const uint8_t* source)
{
return ((source[0] << 24) | (source[1] << 16) | (source[2] << 8) | (source[3] << 0));
}
#define read8(target) do { target=read8r(chunkdata); chunkdata++; } while(0)
#define read24(target) do { target=read24r(chunkdata); chunkdata+=3; } while(0)
#define read32(target) do { target=read32r(chunkdata); chunkdata+=4; } while(0)
bool png_decode(const void * pngdata, size_t pnglen, struct mpng_image * img, enum video_format format)
{
unsigned i;
unsigned b, x, y;
tinfl_decompressor inflator = {0};
unsigned int bitsperchannel = 0;
unsigned int colortype = 0;
unsigned int compressiontype = 0;
unsigned int filtertype = 0;
unsigned int interlacetype = 0;
unsigned int bpl = 0;
unsigned int width = 0;
unsigned int height = 0;
uint8_t * pixelsat = NULL;
uint8_t * pixelsend = NULL;
unsigned int palette[256];
unsigned palettelen = 0;
const uint8_t *data = NULL;
const uint8_t *dataend = NULL;
uint8_t * pixels = NULL;
memset(img, 0, sizeof(struct mpng_image));
if (format!=FMT_RGB888 && format!=FMT_XRGB8888 && format!=FMT_ARGB8888)
return false;
if (pnglen<8)
return false;
data = (const uint8_t*)pngdata;
if (!data)
return false;
if (memcmp(data, "\x89PNG\r\n\x1A\n", 8))
return false;
dataend = data + pnglen;
data += 8;
/* not gonna catch palette overflows */
memset(palette, 0, sizeof(palette));
tinfl_init(&inflator);
while (true)
{
unsigned int chunklen;
unsigned int chunktype;
unsigned int chunkchecksum;
unsigned int actualchunkchecksum;
const uint8_t * chunkdata = NULL;
if (data + 4 + 4 > dataend)
goto bad;
chunklen = read32r(data);
chunktype = read32r(data + 4);
if (chunklen >= 0x80000000)
goto bad;
if (data + 4 + chunklen + 4 > dataend)
goto bad;
chunkchecksum = mz_crc32(mz_crc32(0, NULL, 0), (uint8_t*)data+4, 4+chunklen);
chunkdata = data+4+4;
actualchunkchecksum = read32r(data+4+4+chunklen);
if (actualchunkchecksum != chunkchecksum)
goto bad;
data += 4 + 4 + chunklen + 4;
switch (chunktype)
{
case 0x49484452: //IHDR
{
read32(width);
read32(height);
read8(bitsperchannel);
read8(colortype);
read8(compressiontype);
read8(filtertype);
read8(interlacetype);
if (width>=0x80000000)
goto bad;
if (width==0)
goto bad;
if (height>=0x80000000)
goto bad;
if (height==0)
goto bad;
if (colortype!=2 && colortype!=3 && colortype!=6)
goto bad;
//Greyscale 0
//Truecolour 2
//Indexed-colour 3
//Greyscale with alpha 4
//Truecolour with alpha 6
if (colortype==2 && bitsperchannel!=8)
goto bad;//truecolor; can be 16bpp but I don't want that.
if (colortype==3 && bitsperchannel!=1 && bitsperchannel!=2 && bitsperchannel!=4 && bitsperchannel!=8)
goto bad;//paletted
if (colortype==6 && bitsperchannel!=8)
goto bad;//truecolor with alpha
if (colortype==6 && format!=FMT_ARGB8888)
goto bad;//can only decode alpha on ARGB formats
if (compressiontype!=0)
goto bad;
if (filtertype!=0)
goto bad;
if (interlacetype!=0 && interlacetype!=1)
goto bad;
if (colortype==2)
bpl = 3*width;
if (colortype==3)
bpl = (width*bitsperchannel + bitsperchannel-1)/8;
if (colortype==6)
bpl = 4*width;
pixels = (uint8_t*)malloc((bpl + 1)*height); if (!pixels) goto bad;
if (!pixels)
goto bad;
pixelsat = pixels;
pixelsend = pixels+(bpl + 1)*height;
}
break;
case 0x504c5445: //PLTE
{
if (pixels == NULL || palettelen!=0)
goto bad;
if (chunklen == 0 || chunklen%3 || chunklen>3*256)
goto bad;
if (colortype!=3)
break;//palette on rgb is allowed but rare, and it's just a recommendation anyways.
palettelen = chunklen/3;
for (i=0;i<palettelen;i++)
{
read24(palette[i]);
palette[i]|=0xFF000000;
}
}
break;
case 0x74524E53: //tRNS
{
if (format!=FMT_ARGB8888 || pixels == NULL || pixels!=pixelsat)
goto bad;
if (colortype == 2)
{
if (palettelen == 0)
goto bad;
goto bad;
}
else if (colortype == 3)
{
goto bad;
}
else goto bad;
}
break;
case 0x49444154: //IDAT
{
size_t chunklencopy, byteshere;
tinfl_status status;
if (pixels == NULL || (colortype == 3 && palettelen == 0))
goto bad;
chunklencopy = chunklen;
byteshere = (pixelsend - pixelsat)+1;
status = tinfl_decompress(&inflator, (const uint8_t*)chunkdata,
&chunklencopy, pixels, pixelsat, &byteshere,
TINFL_FLAG_HAS_MORE_INPUT | TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF
| TINFL_FLAG_PARSE_ZLIB_HEADER);
pixelsat += byteshere;
if (status<0)
goto bad;
}
break;
case 0x49454e44: //IEND
{
size_t zero, finalbytes;
tinfl_status status;
unsigned int bpppacked;
uint8_t * out = NULL;
uint8_t *filteredline = NULL;
uint8_t *prevout = NULL;
if (data!=dataend)
goto bad;
if (chunklen)
goto bad;
zero = 0;
finalbytes = (pixelsend-pixelsat);
status = tinfl_decompress(&inflator,
(const uint8_t*)NULL, &zero, pixels, pixelsat, &finalbytes,
TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF | TINFL_FLAG_PARSE_ZLIB_HEADER);
pixelsat += finalbytes;
if (status!=TINFL_STATUS_DONE)
goto bad;
if (pixelsat!=pixelsend)
goto bad;//too little data (can't be too much because we didn't give it that buffer size)
out = (uint8_t*)malloc(videofmt_byte_per_pixel(format)*width*height);
if (!out)
goto bad;
//TODO: deinterlace at random point
//run filters
bpppacked = ((colortype == 2) ? 3 : (colortype == 6) ? 4 : 1);
prevout = out + (4 * width * 1);
if (!prevout)
goto bad;
//this will blow up if a 1px high image is filtered with Paeth, but who the hell would do that?
if (height == 1)
prevout=out;
memset(prevout, 0, 4*width*1);//not using bpp here because we only need a chunk of black anyways
filteredline = pixels;
if (!filteredline)
goto bad;
for (y=0;y<height;y++)
{
uint8_t *thisout = out + (bpl*y);
switch (*(filteredline++))
{
case 0:
memcpy(thisout, filteredline, bpl);
break;
case 1:
memcpy(thisout, filteredline, bpppacked);
for (x=bpppacked;x<bpl;x++)
thisout[x]=thisout[x-bpppacked]+filteredline[x];
break;
case 2:
for (x=0;x<bpl;x++)
{
thisout[x]=prevout[x]+filteredline[x];
}
break;
case 3:
for (x=0;x<bpppacked;x++)
{
int a=0;
int b=prevout[x];
thisout[x]=(a+b)/2+filteredline[x];
}
for (x=bpppacked;x<bpl;x++)
{
int a=thisout[x-bpppacked];
int b=prevout[x];
thisout[x]=(a+b)/2+filteredline[x];
}
break;
case 4:
for (x=0;x<bpppacked;x++)
{
int prediction;
int a = 0;
int b = prevout[x];
int c = 0;
int p = a + b - c;
int pa = abs(p - a);
int pb = abs(p - b);
int pc = abs(p - c);
if (pa <= pb && pa <= pc)
prediction = a;
else if (pb <= pc)
prediction = b;
else
prediction = c;
thisout[x] = filteredline[x] + prediction;
}
for (x=bpppacked;x<bpl;x++)
{
int prediction;
int a = thisout[x-bpppacked];
int b = prevout[x];
int c = prevout[x-bpppacked];
int p = a + b - c;
int pa = abs(p - a);
int pb = abs(p - b);
int pc = abs(p - c);
if (pa <= pb && pa <= pc)
prediction = a;
else if (pb <= pc)
prediction = b;
else
prediction = c;
thisout[x] = filteredline[x] + prediction;
}
break;
default:
goto bad;
}
prevout=thisout;
filteredline+=bpl;
}
//unpack paletted data
//not sure if these aliasing tricks are valid, but the prerequisites for that bugging up are pretty much impossible to hit.
if (colortype == 3)
{
switch (bitsperchannel)
{
case 1:
{
y = height;
uint8_t *outp = out + 3 * width * height;
do
{
uint8_t *inp = out + y * bpl;
int x = (width+7) / 8;
do
{
x--;
inp--;
for (b = 0; b < 8; b++)
{
int rgb32=palette[((*inp)>>b)&1];
*(--outp)=rgb32>>0;
*(--outp)=rgb32>>8;
*(--outp)=rgb32>>16;
}
} while(x);
y--;
} while(y);
}
break;
case 2:
{
int y=height;
uint8_t * outp=out+3*width*height;
do
{
int x;
unsigned char *inp = out + y * bpl;
x =(width + 3) / 4;
do {
x--;
inp--;
for (b=0;b<8;b+=2)
{
int rgb32=palette[((*inp)>>b)&3];
*(--outp)=rgb32>>0;
*(--outp)=rgb32>>8;
*(--outp)=rgb32>>16;
}
} while(x);
y--;
} while(y);
}
break;
case 4:
{
int y=height;
uint8_t * outp=out+3*width*height;
do {
unsigned char * inp=out+y*bpl;
int x=(width+1)/2;
do {
x--;
inp--;
int rgb32=palette[*inp&15];
*(--outp)=rgb32>>0;
*(--outp)=rgb32>>8;
*(--outp)=rgb32>>16;
rgb32=palette[*inp>>4];
*(--outp)=rgb32>>0;
*(--outp)=rgb32>>8;
*(--outp)=rgb32>>16;
} while(x);
y--;
} while(y);
}
break;
case 8:
{
uint8_t *inp = out+width*height;
uint8_t *outp = out+3*width*height;
int i=width*height;
do {
i--;
inp-=1;
int rgb32=palette[*inp];
*(--outp)=rgb32>>0;
*(--outp)=rgb32>>8;
*(--outp)=rgb32>>16;
} while(i);
}
break;
}
}
//unpack to 32bpp if requested
if (format != FMT_RGB888 && colortype == 2)
{
uint8_t *inp = out+width*height*3;
uint32_t *outp = ((uint32_t*)out)+width*height;
int i=width*height;
do {
i--;
inp-=3;
outp--;
*outp = read24r(inp) | 0xFF000000;
} while(i);
}
img->width = width;
img->height = height;
img->pixels = out;
img->pitch = videofmt_byte_per_pixel(format)*width;
img->format = format;
tinfl_deinit(&inflator);
free(pixels);
return true;
}
break;
default:
if (!(chunktype&0x20000000))
goto bad;//unknown critical
//otherwise ignore
}
}
bad:
tinfl_deinit(&inflator);
free(pixels);
memset(img, 0, sizeof(struct mpng_image));
return false;
}