/*!
* \brief pixWriteJpeg()
*
* \param[in] filename
* \param[in] pix any depth; cmap is OK
* \param[in] quality 1 - 100; 75 is default
* \param[in] progressive 0 for baseline sequential; 1 for progressive
* \return 0 if OK; 1 on error
*/
l_int32
pixWriteJpeg(const char *filename,
PIX *pix,
l_int32 quality,
l_int32 progressive)
{
FILE *fp;
PROCNAME("pixWriteJpeg");
if (!pix)
return ERROR_INT("pix not defined", procName, 1);
if (!filename)
return ERROR_INT("filename not defined", procName, 1);
if ((fp = fopenWriteStream(filename, "wb+")) == NULL)
return ERROR_INT("stream not opened", procName, 1);
if (pixWriteStreamJpeg(fp, pix, quality, progressive)) {
fclose(fp);
return ERROR_INT("pix not written to stream", procName, 1);
}
fclose(fp);
return 0;
}
/*!
* pixWriteMemJpeg()
*
* Input: &data (<return> data of tiff compressed image)
* &size (<return> size of returned data)
* pix
* quality (1 - 100; 75 is default value; 0 is also default)
* progressive (0 for baseline sequential; 1 for progressive)
* Return: 0 if OK, 1 on error
*
* Notes:
* (1) See pixWriteStreamJpeg() for usage. This version writes to
* memory instead of to a file stream.
*/
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)
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 ((fp = open_memstream((char **)pdata, psize)) == NULL)
return ERROR_INT("stream not opened", procName, 1);
ret = pixWriteStreamJpeg(fp, pix, quality, progressive);
fclose(fp);
return ret;
}
/*!
* \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;
}
/*!
* pixWriteStream()
*
* Input: stream
* pix
* format
* Return: 0 if OK; 1 on error.
*/
l_int32
pixWriteStream(FILE *fp,
PIX *pix,
l_int32 format)
{
PROCNAME("pixWriteStream");
if (!fp)
return ERROR_INT("stream not defined", procName, 1);
if (!pix)
return ERROR_INT("pix not defined", procName, 1);
if (format == IFF_DEFAULT)
format = pixChooseOutputFormat(pix);
switch(format)
{
case IFF_BMP:
pixWriteStreamBmp(fp, pix);
break;
case IFF_JFIF_JPEG: /* default quality; baseline sequential */
return pixWriteStreamJpeg(fp, pix, 75, 0);
break;
case IFF_PNG: /* no gamma value stored */
return pixWriteStreamPng(fp, pix, 0.0);
break;
case IFF_TIFF: /* uncompressed */
case IFF_TIFF_PACKBITS: /* compressed, binary only */
case IFF_TIFF_RLE: /* compressed, binary only */
case IFF_TIFF_G3: /* compressed, binary only */
case IFF_TIFF_G4: /* compressed, binary only */
case IFF_TIFF_LZW: /* compressed, all depths */
case IFF_TIFF_ZIP: /* compressed, all depths */
return pixWriteStreamTiff(fp, pix, format);
break;
case IFF_PNM:
return pixWriteStreamPnm(fp, pix);
break;
case IFF_GIF:
return pixWriteStreamGif(fp, pix);
break;
case IFF_PS:
return pixWriteStreamPS(fp, pix, NULL, 0, DEFAULT_SCALING);
break;
case IFF_JP2:
return ERROR_INT("jp2 format not supported", procName, 1);
break;
case IFF_WEBP:
return pixWriteStreamWebP(fp, pix, 80, 0);
break;
case IFF_LPDF:
return pixWriteStreamPdf(fp, pix, 0, NULL);
break;
case IFF_SPIX:
return pixWriteStreamSpix(fp, pix);
break;
default:
return ERROR_INT("unknown format", procName, 1);
break;
}
return 0;
}
