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[libpng17] Added #ifdef's to contrib/examples programs so people don't try

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to compile them without the minimum required support enabled
(suggested by Flavio Medeiros).
This commit is contained in:
Glenn Randers-Pehrson
2015-06-05 21:26:31 -05:00
parent e55c190818
commit 188962a93b
7 changed files with 679 additions and 19 deletions
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22
contrib/tools/png-fix-itxt.c
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@@ -57,16 +57,16 @@ for (;;)
{
/* Read the length */
unsigned long length; /* must be 32 bits! */
c=GETBREAK; buf[0] = c; length = (c & 0xff); length <<= 8;
c=GETBREAK; buf[1] = c; length += (c & 0xff); length <<= 8;
c=GETBREAK; buf[2] = c; length += (c & 0xff); length <<= 8;
c=GETBREAK; buf[3] = c; length += (c & 0xff);
c=GETBREAK; buf[0] = c & 0xff; length = (c & 0xff); length <<= 8;
c=GETBREAK; buf[1] = c & 0xff; length += (c & 0xff); length <<= 8;
c=GETBREAK; buf[2] = c & 0xff; length += (c & 0xff); length <<= 8;
c=GETBREAK; buf[3] = c & 0xff; length += (c & 0xff);
/* Read the chunkname */
c=GETBREAK; buf[4] = c;
c=GETBREAK; buf[5] = c;
c=GETBREAK; buf[6] = c;
c=GETBREAK; buf[7] = c;
c=GETBREAK; buf[4] = c & 0xff;
c=GETBREAK; buf[5] = c & 0xff;
c=GETBREAK; buf[6] = c & 0xff;
c=GETBREAK; buf[7] = c & 0xff;
/* The iTXt chunk type expressed as integers is (105, 84, 88, 116) */
@@ -81,7 +81,7 @@ for (;;)
/* Copy the data bytes */
for (i=8; i < length + 12; i++)
{
c=GETBREAK; buf[i] = c;
c=GETBREAK; buf[i] = c & 0xff;
}
/* Calculate the CRC */
@@ -102,7 +102,7 @@ for (;;)
break;
c=GETBREAK;
buf[length+11]=c;
buf[length+11] = c & 0xff;
/* Update the CRC */
crc = crc32(crc, buf+7+length, 1);
@@ -129,7 +129,7 @@ for (;;)
for (i=8; i< length+12; i++)
{
c=GETBREAK;
putchar(c);
putchar((c & 0xff));
}
if (inchar == EOF)