/*!
* l_autodecode_137()
*
* Input: index into array of functions
* Return: data struct (e.g., pixa) in memory
*/
void *
l_autodecode_137(l_int32 index)
{
l_uint8 *data1, *data2;
l_int32 size1;
size_t size2;
void *result = NULL;
l_int32 nfunc = 2;
PROCNAME("l_autodecode_137");
if (index < 0 || index >= nfunc) {
L_ERROR("invalid index = %d; must be less than %d\n", procName,
index, nfunc);
return NULL;
}
lept_mkdir("lept/auto");
/* Unencode selected string, write to file, and read it */
switch (index) {
case 0:
data1 = decodeBase64(l_strdata_0, strlen(l_strdata_0), &size1);
data2 = zlibUncompress(data1, size1, &size2);
l_binaryWrite("/tmp/lept/auto/data.bin","w", data2, size2);
result = (void *)pixaRead("/tmp/lept/auto/data.bin");
lept_free(data1);
lept_free(data2);
break;
case 1:
data1 = decodeBase64(l_strdata_1, strlen(l_strdata_1), &size1);
data2 = zlibUncompress(data1, size1, &size2);
l_binaryWrite("/tmp/lept/auto/data.bin","w", data2, size2);
result = (void *)pixaRead("/tmp/lept/auto/data.bin");
lept_free(data1);
lept_free(data2);
break;
default:
L_ERROR("invalid index", procName);
}
return result;
}
/*!
* \brief l_bootnum_gen2()
*
* \return pixa of labelled digits
*
* <pre>
* Call this way:
* PIXA *pixa = l_bootnum_gen2(); (C)
* Pixa *pixa = l_bootnum_gen2(); (C++)
* </pre>
*/
PIXA *
l_bootnum_gen2(void)
{
l_uint8 *data1, *data2;
l_int32 size1;
size_t size2;
PIXA *pixa;
/* Unencode selected string, write to file, and read it */
data1 = decodeBase64(l_bootnum2, strlen(l_bootnum2), &size1);
data2 = zlibUncompress(data1, size1, &size2);
pixa = pixaReadMem(data2, size2);
lept_free(data1);
lept_free(data2);
return pixa;
}
/*!
* l_bootnum_gen()
*
* Return: the bootnum pixa
*
* Call this way:
* PIXA *pixa = (PIXA *)l_bootnum_gen(); (C)
* Pixa *pixa = (Pixa *)l_bootnum_gen(); (C++)
*/
void *
l_bootnum_gen()
{
l_uint8 *data1, *data2;
l_int32 size1;
size_t size2;
void *result;
/* Unencode selected string, write to file, and read it */
data1 = decodeBase64(l_bootnum, strlen(l_bootnum), &size1);
data2 = zlibUncompress(data1, size1, &size2);
l_binaryWrite("/tmp/data.bin", "w", data2, size2);
result = (void *)pixaRead("/tmp/data.bin");
FREE(data1);
FREE(data2);
return result;
}
/*!
* \brief l_bootnum_gen3()
*
* \return pixa of labelled digits
*
* <pre>
* Call this way:
* PIXA *pixa = l_bootnum_gen3(); (C)
* Pixa *pixa = l_bootnum_gen3(); (C++)
* </pre>
*/
PIXA *
l_bootnum_gen3(void)
{
l_uint8 *data1, *data2;
l_int32 size1;
size_t size2;
PIXA *pixa;
lept_mkdir("lept/auto");
/* Unencode selected string, uncompress it, and read it */
data1 = decodeBase64(l_strdata_0, strlen(l_strdata_0), &size1);
data2 = zlibUncompress(data1, size1, &size2);
pixa = pixaReadMem(data2, size2);
lept_free(data1);
lept_free(data2);
return pixa;
}
/*!
* l_bootnum_gen2()
*
* Return: the bootnum2 pixa
*
* Call this way:
* PIXA *pixa = (PIXA *)l_bootnum_gen2(); (C)
* Pixa *pixa = (Pixa *)l_bootnum_gen2(); (C++)
*/
void *
l_bootnum_gen2(void)
{
l_uint8 *data1, *data2;
l_int32 size1;
size_t size2;
void *result;
lept_mkdir("lept/auto");
/* Unencode selected string, write to file, and read it */
data1 = decodeBase64(l_bootnum2, strlen(l_bootnum2), &size1);
data2 = zlibUncompress(data1, size1, &size2);
l_binaryWrite("/tmp/lept/auto/data.bin", "w", data2, size2);
result = (void *)pixaRead("/tmp/lept/auto/data.bin");
lept_free(data1);
lept_free(data2);
return result;
}
DataBuf PngChunk::parsePngChunk(const byte* pData, long size, long& index, int keysize)
{
DataBuf arr;
if(!strncmp((char*)PNG_CHUNK_TYPE(pData, index), "zTXt", 4))
{
// Extract a deflate compressed Latin-1 text chunk
#ifdef DEBUG
std::cerr << "Exiv2::PngChunk::parsePngChunk: We found a zTXt field\n";
#endif
// we get the compression method after the key
const byte* compressionMethod = &PNG_CHUNK_DATA(pData, index, keysize+1);
if ( *compressionMethod != 0x00 )
{
// then it isn't zlib compressed and we are sunk
#ifdef DEBUG
std::cerr << "Exiv2::PngChunk::parsePngChunk: Non-standard zTXt compression method.\n";
#endif
throw Error(14);
}
// compressed string after the compression technique spec
const byte* compressedText = &PNG_CHUNK_DATA(pData, index, keysize+2);
unsigned int compressedTextSize = getLong(&pData[index], bigEndian)-keysize-2;
// security check, also considering overflow wraparound from the addition --
// we may endup with a /smaller/ index if we wrap all the way around
long firstIndex = (long)(compressedText - pData);
long onePastLastIndex = firstIndex + compressedTextSize;
if ( onePastLastIndex > size || onePastLastIndex <= firstIndex)
throw Error(14);
zlibUncompress(compressedText, compressedTextSize, arr);
}
else if (!strncmp((char*)PNG_CHUNK_TYPE(pData, index), "tEXt", 4))
{
// Extract a non-compressed Latin-1 text chunk
#ifdef DEBUG
std::cerr << "Exiv2::PngChunk::parsePngChunk: We found a tEXt field\n";
#endif
// the text comes after the key, but isn't null terminated
const byte* text = &PNG_CHUNK_DATA(pData, index, keysize+1);
long textsize = getLong(&pData[index], bigEndian)-keysize-1;
// security check, also considering overflow wraparound from the addition --
// we may endup with a /smaller/ index if we wrap all the way around
long firstIndex = (long)(text - pData);
long onePastLastIndex = firstIndex + textsize;
if ( onePastLastIndex > size || onePastLastIndex <= firstIndex)
throw Error(14);
arr.alloc(textsize);
arr = DataBuf(text, textsize);
}
else if(!strncmp((char*)PNG_CHUNK_TYPE(pData, index), "iTXt", 4))
{
// Extract a deflate compressed or uncompressed UTF-8 text chunk
// we get the compression flag after the key
const byte* compressionFlag = &PNG_CHUNK_DATA(pData, index, keysize+1);
// we get the compression method after the compression flag
const byte* compressionMethod = &PNG_CHUNK_DATA(pData, index, keysize+1);
// language description string after the compression technique spec
const byte* languageText = &PNG_CHUNK_DATA(pData, index, keysize+1);
unsigned int languageTextSize = getLong(&pData[index], bigEndian)-keysize-1;
// translated keyword string after the language description
const byte* translatedKeyText = &PNG_CHUNK_DATA(pData, index, keysize+1);
unsigned int translatedKeyTextSize = getLong(&pData[index], bigEndian)-keysize-1;
if ( *compressionFlag == 0x00 )
{
// then it's an uncompressed iTXt chunk
#ifdef DEBUG
std::cerr << "Exiv2::PngChunk::parsePngChunk: We found an uncompressed iTXt field\n";
#endif
// the text comes after the translated keyword, but isn't null terminated
const byte* text = &PNG_CHUNK_DATA(pData, index, keysize+1);
long textsize = getLong(&pData[index], bigEndian)-keysize-1;
// security check, also considering overflow wraparound from the addition --
// we may endup with a /smaller/ index if we wrap all the way around
long firstIndex = (long)(text - pData);
long onePastLastIndex = firstIndex + textsize;
if ( onePastLastIndex > size || onePastLastIndex <= firstIndex)
throw Error(14);
arr.alloc(textsize);
arr = DataBuf(text, textsize);
}
else if ( *compressionMethod == 0x00 )
{
// then it's a zlib compressed iTXt chunk
#ifdef DEBUG
std::cerr << "Exiv2::PngChunk::parsePngChunk: We found a zlib compressed iTXt field\n";
#endif
// the compressed text comes after the translated keyword, but isn't null terminated
const byte* compressedText = &PNG_CHUNK_DATA(pData, index, keysize+1);
long compressedTextSize = getLong(&pData[index], bigEndian)-keysize-1;
// security check, also considering overflow wraparound from the addition --
// we may endup with a /smaller/ index if we wrap all the way around
long firstIndex = (long)(compressedText - pData);
long onePastLastIndex = firstIndex + compressedTextSize;
if ( onePastLastIndex > size || onePastLastIndex <= firstIndex)
throw Error(14);
zlibUncompress(compressedText, compressedTextSize, arr);
}
else
{
// then it isn't zlib compressed and we are sunk
#ifdef DEBUG
std::cerr << "Exiv2::PngChunk::parsePngChunk: Non-standard iTXt compression method.\n";
#endif
throw Error(14);
}
}
else
{
#ifdef DEBUG
std::cerr << "Exiv2::PngChunk::parsePngChunk: We found a field, not expected though\n";
#endif
throw Error(14);
}
return arr;
} // PngChunk::parsePngChunk
main(int argc,
char **argv)
{
char *filein, *fileout;
l_uint8 *array1, *array2, *dataout, *dataout2;
l_int32 i, blocksize;
size_t nbytes, nout, nout2;
BBUFFER *bb, *bb2;
FILE *fp;
static char mainName[] = "buffertest";
if (argc != 3)
exit(ERROR_INT(" Syntax: buffertest filein fileout", mainName, 1));
filein = argv[1];
fileout = argv[2];
if ((array1 = l_binaryRead(filein, &nbytes)) == NULL)
exit(ERROR_INT("array not made", mainName, 1));
fprintf(stderr, " Bytes read from file: %ld\n", nbytes);
/* Application of byte buffer ops: compress/decompress in memory */
#if 1
dataout = zlibCompress(array1, nbytes, &nout);
l_binaryWrite(fileout, "w", dataout, nout);
dataout2 = zlibUncompress(dataout, nout, &nout2);
l_binaryWrite("/tmp/junktest", "w", dataout2, nout2);
fprintf(stderr,
"nbytes in = %ld, nbytes comp = %ld, nbytes uncomp = %ld\n",
nbytes, nout, nout2);
lept_free(dataout);
lept_free(dataout2);
#endif
/* Low-level byte buffer read/write test */
#if 0
bb = bbufferCreate(array1, nbytes);
bbufferRead(bb, array1, nbytes);
array2 = (l_uint8 *)lept_calloc(2 * nbytes, sizeof(l_uint8));
fprintf(stderr, " Bytes initially in buffer: %d\n", bb->n);
blocksize = (2 * nbytes) / NBLOCKS;
for (i = 0; i <= NBLOCKS; i++) {
bbufferWrite(bb, array2, blocksize, &nout);
fprintf(stderr, " block %d: wrote %d bytes\n", i + 1, nout);
}
fprintf(stderr, " Bytes left in buffer: %d\n", bb->n);
bb2 = bbufferCreate(NULL, 0);
bbufferRead(bb2, array1, nbytes);
fp = lept_fopen(fileout, "wb");
bbufferWriteStream(bb2, fp, nbytes, &nout);
fprintf(stderr, " bytes written out to fileout: %d\n", nout);
bbufferDestroy(&bb);
bbufferDestroy(&bb2);
lept_free(array2);
#endif
lept_free(array1);
return 0;
}
