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-rw-r--r--minilibx_beta/mlx_png.c431
1 files changed, 0 insertions, 431 deletions
diff --git a/minilibx_beta/mlx_png.c b/minilibx_beta/mlx_png.c
deleted file mode 100644
index 48e82de..0000000
--- a/minilibx_beta/mlx_png.c
+++ /dev/null
@@ -1,431 +0,0 @@
-
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <sys/mman.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <err.h>
-#include <string.h>
-#include <arpa/inet.h>
-
-#include "zlib.h"
-
-#include "mlx.h"
-
-#define UNIQ_BPP 4
-
-#define PNG_MAGIC_SIZE 8
-unsigned char magic[PNG_MAGIC_SIZE] = {137, 80, 78, 71, 13, 10, 26, 10};
-#define PNG_HDR_SIZE 13
-
-#define Z_CHUNK 32768
-
-#define ERR_MAGIC_SIZE 1
-#define ERR_MAGIC_WRONG 2
-#define ERR_STRUCT_INCOMPLETE 3
-#define ERR_STRUCT_HDR 4
-#define ERR_STRUCT_END 5
-#define ERR_STRUCT_CRC 6
-#define ERR_STRUCT_INCIMPL 7
-#define ERR_STRUCT_DAT 8
-#define ERR_STRUCT_MISSCHK 9
-#define ERR_ZLIB 10
-#define ERR_DATA_MISMATCH 11
-#define ERR_DATA_FILTER 12
-#define ERR_MALLOC 13
-char *(mipng_err[]) =
-{
- "No error",
- "Not enough size for magic",
- "Wrong magic",
- "Incomplete chunk structure",
- "Duplicate or incorrect header",
- "Duplicate or incorrect end",
- "Invalid CRC in chunk",
- "Incorrect header or configuration not implemented",
- "Non consecutive dat chunks",
- "Missing header/dat/end chunk(s)",
- "Zlib inflate error",
- "Inflated data size mismatch",
- "Unknown scanline filter",
- "Can't malloc"
-};
-
-typedef struct png_info_s
-{
- unsigned int width;
- unsigned int height;
- int depth;
- int color;
- int interlace;
- int bpp;
-} png_info_t;
-
-
-int mipng_is_type(unsigned char *ptr, char *type)
-{
- if (ptr[4] == type[0] && ptr[5] == type[1] && ptr[6] == type[2] && ptr[7] == type[3])
- return (1);
- return (0);
-}
-
-
-unsigned char mipng_defilter_none(unsigned char *buff, int pos, int a, int b, int c)
-{ return (buff[pos]); }
-unsigned char mipng_defilter_sub(unsigned char *buff, int pos, int a, int b, int c)
-{ return (buff[pos]+(unsigned int)a); }
-unsigned char mipng_defilter_up(unsigned char *buff, int pos, int a, int b, int c)
-{ return (buff[pos]+(unsigned int)b); }
-unsigned char mipng_defilter_average(unsigned char *buff, int pos, int a, int b, int c)
-{ return (buff[pos]+((unsigned int)a+(unsigned int)b)/2); }
-unsigned char mipng_defilter_paeth(unsigned char *buff, int pos, int a, int b, int c)
-{
- int p;
- int result;
-
- p = a + b - c;
- if (abs(b - c) <= abs(a - c) && abs(b - c) <= abs(a + b - c - c))
- result = a;
- else
- if (abs(a - c) <= abs(a + b - c - c))
- result = b;
- else
- result = c;
- return (buff[pos]+result);
-}
-
-
-
-unsigned char (*(mipng_defilter[]))(unsigned char *buff, int pos, int a, int b, int c) =
-{
- mipng_defilter_none,
- mipng_defilter_sub,
- mipng_defilter_up,
- mipng_defilter_average,
- mipng_defilter_paeth
-};
-
-// only work for mlx mac or img 32bpp
-int mipng_fill_img(void *img, unsigned char *buf, png_info_t *pi)
-{
- unsigned int current_filter;
- int ipos;
- int bpos;
- int ilen;
- int iline;
- int blen;
- int bpp;
- int endian;
- unsigned char tmp;
- unsigned char *ibuf;
-
- ibuf = (unsigned char *)mlx_get_data_addr(img, &bpp, &iline, &endian);
- // iline = img->width * UNIQ_BPP;
- // ilen = img->width * img->height * UNIQ_BPP;
- ilen = iline*pi->height;
- ipos = 0;
- blen = pi->width * pi->height * pi->bpp + pi->height; // ??? why + pi->height ??
- bpos = 0;
- while (ipos < ilen && bpos < blen)
- {
- if (ipos % iline == 0)
- {
- // printf("ipos %d iline %d pi->width %d bpos %d\n", ipos, iline, pi->width, bpos);
- if ((current_filter = buf[bpos++]) > 4)
- {
- return (ERR_DATA_FILTER);
- }
- }
- ibuf[ipos] = mipng_defilter[current_filter](buf, bpos,
- ipos%iline>3?ibuf[ipos-UNIQ_BPP]:0,
- (ipos>=iline)?ibuf[ipos-iline]:0,
- (ipos>=iline && ipos%iline>3)?ibuf[ipos-iline-UNIQ_BPP]:0);
- ipos ++;
- bpos ++;
- if (pi->depth == 16)
- bpos ++;
- if (ipos % 4 == 3 && pi->color == 2) // no alpha
- ibuf[ipos++] = 0xFF;
- if (ipos % iline == pi->width * 4)
- ipos += iline-pi->width*4;
- }
- if (ipos != ilen || bpos != blen)
- {
- // printf("fill err ipos %d vs %d, bpos %d vs %d\n", ipos, ilen, bpos, blen);
- return (ERR_DATA_MISMATCH);
- }
- ipos = 0;
- while (ipos < ilen)
- {
- tmp = ibuf[ipos];
- ibuf[ipos] = ibuf[ipos+2];
- ibuf[ipos+2] = tmp;
- ibuf[ipos+3] = 0xFF - ibuf[ipos+3];
- ipos += UNIQ_BPP;
- }
- return (0);
-}
-
-
-int mipng_data(void *img, unsigned char *dat, png_info_t *pi)
-{
- unsigned int len;
- int b_pos;
- unsigned char *buffer;
- int ret;
- int z_ret;
- unsigned z_have;
- z_stream z_strm;
- unsigned char z_out[Z_CHUNK];
-
- b_pos = 0;
- if (!(buffer = malloc((long long)pi->width*(long long)pi->height*(long long)pi->bpp + pi->height)))
- return (ERR_MALLOC);
- z_strm.zalloc = Z_NULL;
- z_strm.zfree = Z_NULL;
- z_strm.opaque = Z_NULL;
- z_strm.avail_in = 0;
- z_strm.next_in = Z_NULL;
- z_ret = inflateInit(&z_strm);
- if (z_ret != Z_OK)
- {
- free(buffer);
- return (ERR_ZLIB);
- }
-
- while (mipng_is_type(dat, "IDAT"))
- {
- len = *((unsigned int *)dat);
- len = ntohl(len);
- z_strm.avail_in = len;
- z_strm.next_in = dat + 8;
- z_strm.avail_out = 0;
- while (z_strm.avail_out == 0)
- {
- z_strm.avail_out = Z_CHUNK;
- z_strm.next_out = z_out;
- z_ret = inflate(&z_strm, Z_NO_FLUSH);
- // printf("inflate ret %d avail_out %d\n", z_ret, z_strm.avail_out);
- if (z_ret != Z_OK && z_ret != Z_STREAM_END)
- {
- inflateEnd(&z_strm);
- free(buffer);
- return (ERR_ZLIB);
- }
- if (b_pos + Z_CHUNK - z_strm.avail_out > pi->width*pi->height*pi->bpp+pi->height)
- {
- inflateEnd(&z_strm);
- free(buffer);
- return (ERR_DATA_MISMATCH);
- }
- bcopy(z_out, buffer+b_pos, Z_CHUNK - z_strm.avail_out);
- b_pos += Z_CHUNK - z_strm.avail_out;
- }
- dat += len + 4 + 4 + 4;
- }
- inflateEnd(&z_strm);
- if (b_pos != pi->width*pi->height*pi->bpp+pi->height)
- {
- // printf("pb : bpos %d vs expected %d\n", b_pos, img->width*img->height*pi->bpp+img->height);
- free(buffer);
- return (ERR_DATA_MISMATCH);
- }
- ret = mipng_fill_img(img, buffer, pi);
- free(buffer);
- return (ret);
-}
-
-
-
-int mipng_magic(unsigned char *ptr, int size)
-{
- int i;
-
- if (size < PNG_MAGIC_SIZE)
- return (ERR_MAGIC_SIZE);
- i = 0;
- while (i < PNG_MAGIC_SIZE)
- if (*(ptr++) != magic[i++])
- return (ERR_MAGIC_WRONG);
- return (0);
-}
-
-
-unsigned long crc_table[256] = { 0, 0x77073096, 0xee0e612c, 0x990951ba, 0x76dc419, 0x706af48f, 0xe963a535, 0x9e6495a3, 0xedb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0x9b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x1db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x6b6b51f, 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0xf00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x86d3d2d, 0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x3b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x4db2615, 0x73dc1683, 0xe3630b12, 0x94643b84, 0xd6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0xa00ae27, 0x7d079eb1, 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x26d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x5005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0xcb61b38, 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0xbdbdf21, 0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d };
-
-// From http://www.w3.org/TR/PNG/#D-CRCAppendix
-int mipng_crc(unsigned char *ptr, int len)
-{
- unsigned int file_crc;
- unsigned long crc;
- int i;
-
- file_crc = *((unsigned int *)(ptr+4+4+len));
- file_crc = ntohl(file_crc);
-
- crc = 0xffffffffL;
- i = 0;
- while (i < len+4)
- crc = crc_table[(crc ^ ptr[(i++)+4]) & 0xff] ^ (crc >> 8);
- crc ^= 0xffffffffL;
-
- if (file_crc != crc)
- return (1);
- return (0);
-}
-
-
-int mipng_structure(unsigned char *ptr, int size, unsigned char **hdr, unsigned char **dat)
-{
- unsigned int len;
- int dat_state;
- int end;
-
- dat_state = 0;
- *hdr = NULL;
- *dat = NULL;
- end = 0;
- while (size)
- {
- if (size >= 4) // length present
- {
- len = *((unsigned int *)ptr);
- len = ntohl(len);
- if (size < 4 + 4 + 4 + len)
- return (ERR_STRUCT_INCOMPLETE);
- if (mipng_crc(ptr, len))
- return (ERR_STRUCT_CRC);
- // printf("found chunk len %d type %c%c%c%c\n", len, *(ptr+4), *(ptr+5), *(ptr+6), *(ptr+7));
- if (mipng_is_type(ptr, "IHDR"))
- {
- if (*hdr || len != PNG_HDR_SIZE)
- return (ERR_STRUCT_HDR);
- *hdr = ptr;
- }
- if (mipng_is_type(ptr, "IEND"))
- {
- if (len != 0 || size != 4+4+4)
- return (ERR_STRUCT_END);
- end = 1;
- }
- if (mipng_is_type(ptr, "IDAT"))
- {
- if (dat_state == 0)
- {
- dat_state = 1;
- *dat = ptr;
- }
- if (dat_state == 2)
- return (ERR_STRUCT_DAT);
- }
- else
- if (dat_state == 1)
- dat_state = 2;
- size -= 4+4+4+len;
- ptr += 4+4+4+len;
- }
- else
- return (ERR_STRUCT_INCOMPLETE);
- }
- if (*hdr == 0 || *dat == 0 || end == 0)
- return (ERR_STRUCT_MISSCHK);
- return (0);
-}
-
-
-int mipng_verif_hdr(unsigned char *hdr, png_info_t *pi)
-{
- unsigned int compress;
- unsigned int filter;
-
- hdr += 8;
- pi->width = ntohl(*((unsigned long *)hdr));
- pi->height = ntohl(*((unsigned long *)(hdr+4)));
- pi->depth = *(hdr+8);
- pi->color = *(hdr+9);
- compress = *(hdr+10);
- filter = *(hdr+11);
- pi->interlace = *(hdr+12);
- if (pi->width <= 0 || pi->height <= 0 || (pi->depth != 8 && pi->depth != 16)
- || (pi->color != 2 && pi->color != 6) || compress != 0 || filter != 0 || pi->interlace != 0)
- return (ERR_STRUCT_INCIMPL);
- pi->bpp = pi->depth / 8;
- if (pi->color == 2)
- pi->bpp *= 3;
- if (pi->color == 6)
- pi->bpp *= 4;
- // printf("hdr info : %d x %d, depth %d, col type %d, comp %d, filter %d, interlace %d\nbpp is %d\n",
- // pi->width, pi->height, pi->depth, pi->color, compress, filter, pi->interlace, pi->bpp);
- return (0);
-}
-
-
-void *mlx_int_parse_png(void *xvar, unsigned char *fptr, int size, int *width, int *height)
-{
- int err;
- unsigned char *hdr;
- unsigned char *dat;
- png_info_t pi;
- void *img;
-
- if ((err = mipng_magic(fptr, size)))
- {
- warnx("mlx PNG error : %s", mipng_err[err]);
- return ((void *)0);
- }
- fptr += PNG_MAGIC_SIZE;
- size -= PNG_MAGIC_SIZE;
- if ((err = mipng_structure(fptr, size, &hdr, &dat)))
- {
- warnx("mlx PNG error : %s", mipng_err[err]);
- return ((void *)0);
- }
- if ((err = mipng_verif_hdr(hdr, &pi)))
- {
- warnx("mlx PNG error : %s", mipng_err[err]);
- return ((void *)0);
- }
- if (!(img = mlx_new_image(xvar, pi.width, pi.height)))
- {
- warnx("mlx PNG error : Can't create mlx image");
- return ((void *)0);
- }
- *width = pi.width;
- *height = pi.height;
- if ((err = mipng_data(img, dat, &pi)))
- {
- mlx_destroy_image(xvar, img);
- warnx("mlx PNG error : %s", mipng_err[err]);
- return ((void *)0);
- }
- return (img);
-}
-
-
-
-
-void *mlx_png_file_to_image(void *xvar, char *file, int *width, int *height)
-{
- int fd;
- int size;
- unsigned char *ptr;
- void *img;
-
- if ((fd = open(file, O_RDONLY)) == -1 || (size = lseek(fd, 0, SEEK_END)) == -1 ||
- (ptr = mmap(0, size, PROT_READ, MAP_PRIVATE, fd, 0)) == (void *)MAP_FAILED)
- {
- if (fd >= 0)
- close(fd);
- warnx("Can't map png file '%s'", file);
- return ((void *)0);
- }
- if (!(img = mlx_int_parse_png(xvar, ptr, size, width, height)))
- {
- *width = 0;
- *height = 0;
- }
- munmap(ptr,size);
- close(fd);
- return (img);
-}
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