/*! * \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; }