Attachment 8724896 Details for Bug 1252200

Test program that generates an image that can be used to repro this bug

test004.c (text/x-csrc), 3.58 KB, created by DRC

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Creator: DRC

Size: 3.58 KB

patch

obsolete

>#include <stdlib.h>
>#include <string.h>
>#include <strings.h>
>#include <stdio.h>
>#include <err.h>
>
>#define KB * 1024
>
>/* copied from the source because I don't want to think about what a valid table has to look like */
>static char quanttab[] = {
>	16, 11, 10, 16, 24, 40, 51, 61,
>	12, 12, 14, 19, 26, 58, 60, 55,
>	14, 13, 16, 24, 40, 57, 69, 56,
>	14, 17, 22, 29, 51, 87, 80, 62,
>	18, 22, 37, 56, 68, 109, 103, 77,
>	24, 35, 55, 64, 81, 104, 113, 92,
>	49, 64, 78, 87, 103, 121, 120, 101,
>	72, 92, 95, 98, 112, 100, 103, 99
>};
>static int quanttab_size = sizeof(quanttab);
>
>// Huffman tables per JPEG spec
>static const unsigned char dclumbits[16]=
>{
>	0, 1, 5, 1, 1, 1, 1, 1,
>	1, 0, 0, 0, 0, 0, 0, 0
>};
>static const unsigned char dclumvals[]=
>{
>	0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11
>};
>
>static const unsigned char aclumbits[16]=
>{
>	0, 2, 1, 3, 3, 2, 4, 3,
>	5, 5, 4, 4, 0, 0, 1, 0x7d
>};
>static const unsigned char aclumvals[]=
>{
>	0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
>	0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07,
>	0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08,
>	0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0,
>	0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16,
>	0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28,
>	0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
>	0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
>	0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
>	0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
>	0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,
>	0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
>	0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
>	0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
>	0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
>	0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5,
>	0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4,
>	0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2,
>	0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea,
>	0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
>	0xf9, 0xfa
>};
>
>#define write_byte(jpg, byte) {img[off] = (byte);  off++;}
>#define write_word(j, w) {write_byte(j, (w>>8)&0xff);  write_byte(j, w&0xff);}
>
>#define WIDTH "\x40\x40"
>#define HEIGHT "\x3C\x3C"
>
>int main(void) {
>	puts("preparing...");
>	unsigned char head[] =
>		/*SOI*/ "\xFF\xD8"
>		/*DQT*/ "\xFF\xDB\x00\x43\x00" /*values in quanttab*/;
>  unsigned char sof[] =
>    /*SOF*/ "\xFF\xC0\x00\x11\x08" WIDTH HEIGHT
>            "\x03\x00\x22\x00\x01\x22\x01\x02\x22\x00";
>  unsigned char sos[] =
>    /*SOS*/ "\xFF\xDA\x00\x08\x01\x00\x00\x00\x3F\x00"
>    /*EOI*/ "\xFF\xD9";
>
>	int headlen = sizeof(head)-1;
>	int soflen = sizeof(sof)-1;
>	int soslen = sizeof(sos)-1;
>	int i, len, nval, soses = 0;
>
>	unsigned char img[8000 KB];
>	memcpy(img, head, headlen);
>	int off = headlen;
>	memcpy(img+off, quanttab, quanttab_size);
>	off += quanttab_size;
>
>	// Write default Huffman tables
>	write_byte(jpg, 0xff);  write_byte(jpg, 0xc4);  // DHT marker
>	nval=0;  for(i=0; i<16; i++) nval+=dclumbits[i];
>	len=19+nval;
>	write_word(jpg, len);  // DHT length
>	write_byte(jpg, 0x00);  // Huffman class
>	for(i=0; i<16; i++) write_byte(jpg, dclumbits[i]);
>	for(i=0; i<nval; i++) write_byte(jpg, dclumvals[i]);
>
>	write_byte(jpg, 0xff);  write_byte(jpg, 0xc4);  // DHT marker
>	nval=0;  for(i=0; i<16; i++) nval+=aclumbits[i];
>	len=19+nval;
>	write_word(jpg, len);  // DHT length
>	write_byte(jpg, 0x10);  // Huffman class
>	for(i=0; i<16; i++) write_byte(jpg, aclumbits[i]);
>	for(i=0; i<nval; i++) write_byte(jpg, aclumvals[i]);
>
>	memcpy(img+off, sof, soflen);
>	off += soflen;
>	memcpy(img+off, sos, soslen);
>	off += soslen;
>
>	FILE *f = fopen("oom.jpg", "w");
>	if (!f) err(1, "fopen");
>	if (fwrite(img, off, 1, f) != 1)
>	errx(1, "fwrite");
>	if (fclose(f))
>	err(1, "fclose");
>
>	return 0;
>}

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Attachment 8724896 Details for Bug 1252200