/*! * \brief pixReadMemPnm() * * \param[in] data const; pnm-encoded * \param[in] size of data * \return pix, or NULL on error * * <pre> * Notes: * (1) The %size byte of %data must be a null character. * </pre> */ PIX * pixReadMemPnm(const l_uint8 *data, size_t size) { FILE *fp; PIX *pix; PROCNAME("pixReadMemPnm"); if (!data) return (PIX *)ERROR_PTR("data not defined", procName, NULL); if ((fp = fopenReadFromMemory(data, size)) == NULL) return (PIX *)ERROR_PTR("stream not opened", procName, NULL); pix = pixReadStreamPnm(fp); fclose(fp); if (!pix) L_ERROR("pix not read\n", procName); return pix; }
/*! * pixReadStream() * * Input: fp (file stream) * hint (bitwise OR of L_HINT_* values for jpeg; use 0 for no hint) * Return: pix if OK; null on error * * Notes: * (1) The hint only applies to jpeg. */ PIX * pixReadStream(FILE *fp, l_int32 hint) { l_int32 format, ret; l_uint8 *comment; PIX *pix; PROCNAME("pixReadStream"); if (!fp) return (PIX *)ERROR_PTR("stream not defined", procName, NULL); pix = NULL; findFileFormatStream(fp, &format); switch (format) { case IFF_BMP: if ((pix = pixReadStreamBmp(fp)) == NULL ) return (PIX *)ERROR_PTR( "bmp: no pix returned", procName, NULL); break; // case IFF_JFIF_JPEG: // if ((pix = pixReadStreamJpeg(fp, READ_24_BIT_COLOR, 1, NULL, hint)) // == NULL) // return (PIX *)ERROR_PTR( "jpeg: no pix returned", procName, NULL); // ret = fgetJpegComment(fp, &comment); // if (!ret && comment) // pixSetText(pix, (char *)comment); // FREE(comment); // break; case IFF_PNG: if ((pix = pixReadStreamPng(fp)) == NULL) return (PIX *)ERROR_PTR("png: no pix returned", procName, NULL); break; case IFF_TIFF: case IFF_TIFF_PACKBITS: case IFF_TIFF_RLE: case IFF_TIFF_G3: case IFF_TIFF_G4: case IFF_TIFF_LZW: case IFF_TIFF_ZIP: if ((pix = pixReadStreamTiff(fp, 0)) == NULL) /* page 0 by default */ return (PIX *)ERROR_PTR("tiff: no pix returned", procName, NULL); break; case IFF_PNM: if ((pix = pixReadStreamPnm(fp)) == NULL) return (PIX *)ERROR_PTR("pnm: no pix returned", procName, NULL); break; case IFF_GIF: if ((pix = pixReadStreamGif(fp)) == NULL) return (PIX *)ERROR_PTR("gif: no pix returned", procName, NULL); break; case IFF_JP2: if ((pix = pixReadStreamJp2k(fp, 1, NULL, 0)) == NULL) return (PIX *)ERROR_PTR("jp2: no pix returned", procName, NULL); break; case IFF_WEBP: if ((pix = pixReadStreamWebP(fp)) == NULL) return (PIX *)ERROR_PTR("webp: no pix returned", procName, NULL); break; case IFF_SPIX: if ((pix = pixReadStreamSpix(fp)) == NULL) return (PIX *)ERROR_PTR("spix: no pix returned", procName, NULL); break; case IFF_UNKNOWN: return (PIX *)ERROR_PTR( "Unknown format: no pix returned", procName, NULL); break; } if (pix) pixSetInputFormat(pix, format); return pix; }