/*!
* \brief pixWriteMemJpeg()
*
* \param[out] pdata data of jpeg compressed image
* \param[out] psize size of returned data
* \param[in] pix any depth; cmap is OK
* \param[in] quality 1 - 100; 75 is default value; 0 is also default
* \param[in] progressive 0 for baseline sequential; 1 for progressive
* \return 0 if OK, 1 on error
*
* <pre>
* Notes:
* (1) See pixWriteStreamJpeg() for usage. This version writes to
* memory instead of to a file stream.
* </pre>
*/
l_int32
pixWriteMemJpeg(l_uint8 **pdata,
size_t *psize,
PIX *pix,
l_int32 quality,
l_int32 progressive)
{
l_int32 ret;
FILE *fp;
PROCNAME("pixWriteMemJpeg");
if (pdata) *pdata = NULL;
if (psize) *psize = 0;
if (!pdata)
return ERROR_INT("&data not defined", procName, 1 );
if (!psize)
return ERROR_INT("&size not defined", procName, 1 );
if (!pix)
return ERROR_INT("&pix not defined", procName, 1 );
#if HAVE_FMEMOPEN
if ((fp = open_memstream((char **)pdata, psize)) == NULL)
return ERROR_INT("stream not opened", procName, 1);
ret = pixWriteStreamJpeg(fp, pix, quality, progressive);
#else
L_INFO("work-around: writing to a temp file\n", procName);
#ifdef _WIN32
if ((fp = fopenWriteWinTempfile()) == NULL)
return ERROR_INT("tmpfile stream not opened", procName, 1);
#else
if ((fp = tmpfile()) == NULL)
return ERROR_INT("tmpfile stream not opened", procName, 1);
#endif /* _WIN32 */
ret = pixWriteStreamJpeg(fp, pix, quality, progressive);
rewind(fp);
*pdata = l_binaryReadStream(fp, psize);
#endif /* HAVE_FMEMOPEN */
fclose(fp);
return ret;
}
/*!
* \brief recogWriteMem()
*
* \param[out] pdata data of serialized recog (not ascii)
* \param[out] psize size of returned data
* \param[in] recog
* \return 0 if OK, 1 on error
*
* <pre>
* Notes:
* (1) Serializes a recog in memory and puts the result in a buffer.
* </pre>
*/
l_int32
recogWriteMem(l_uint8 **pdata,
size_t *psize,
L_RECOG *recog)
{
l_int32 ret;
FILE *fp;
PROCNAME("recogWriteMem");
if (pdata) *pdata = NULL;
if (psize) *psize = 0;
if (!pdata)
return ERROR_INT("&data not defined", procName, 1);
if (!psize)
return ERROR_INT("&size not defined", procName, 1);
if (!recog)
return ERROR_INT("recog not defined", procName, 1);
#if HAVE_FMEMOPEN
if ((fp = open_memstream((char **)pdata, psize)) == NULL)
return ERROR_INT("stream not opened", procName, 1);
ret = recogWriteStream(fp, recog);
#else
L_INFO("work-around: writing to a temp file\n", procName);
#ifdef _WIN32
if ((fp = fopenWriteWinTempfile()) == NULL)
return ERROR_INT("tmpfile stream not opened", procName, 1);
#else
if ((fp = tmpfile()) == NULL)
return ERROR_INT("tmpfile stream not opened", procName, 1);
#endif /* _WIN32 */
ret = recogWriteStream(fp, recog);
rewind(fp);
*pdata = l_binaryReadStream(fp, psize);
#endif /* HAVE_FMEMOPEN */
fclose(fp);
return ret;
}
