C++ PredictorState函数代码示例

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本文整理汇总了C++中PredictorState函数的典型用法代码示例。如果您正苦于以下问题：C++ PredictorState函数的具体用法？C++ PredictorState怎么用？C++ PredictorState使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了PredictorState函数的12个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: PredictorSetup

static int
PredictorSetup(TIFF* tif)
{
	TIFFPredictorState* sp = PredictorState(tif);
	TIFFDirectory* td = &tif->tif_dir;

	if (sp->predictor == 1)		/* no differencing */
		return (1);
	if (sp->predictor != 2) {
		TIFFError(tif->tif_name, "\"Predictor\" value %d not supported",
		    sp->predictor);
		return (0);
	}
	if (td->td_bitspersample != 8 && td->td_bitspersample != 16) {
		TIFFError(tif->tif_name,
    "Horizontal differencing \"Predictor\" not supported with %d-bit samples",
		    td->td_bitspersample);
		return (0);
	}
	sp->stride = (td->td_planarconfig == PLANARCONFIG_CONTIG ?
	    td->td_samplesperpixel : 1);
	/*
	 * Calculate the scanline/tile-width size in bytes.
	 */
	if (isTiled(tif))
		sp->rowsize = TIFFTileRowSize(tif);
	else
		sp->rowsize = TIFFScanlineSize(tif);
	return (1);
}

开发者ID:shivshankardayal，项目名称:Universal-C-C--，代码行数:30，代码来源:tif_predict.c

示例2: PredictorSetupEncode

static int
PredictorSetupEncode(TIFF* tif)
{
	TIFFPredictorState* sp = PredictorState(tif);
	TIFFDirectory* td = &tif->tif_dir;

	if (!(*sp->setupencode)(tif) || !PredictorSetup(tif))
		return (0);
	if (sp->predictor == 2) {
		switch (td->td_bitspersample) {
		case 8:  sp->pfunc = horDiff8; break;
		case 16: sp->pfunc = horDiff16; break;
		}
		/*
		 * Override default encoding method with
		 * one that does the predictor stuff.
		 */
		sp->coderow = tif->tif_encoderow;
		tif->tif_encoderow = PredictorEncodeRow;
		sp->codestrip = tif->tif_encodestrip;
		tif->tif_encodestrip = PredictorEncodeTile;
		sp->codetile = tif->tif_encodetile;
		tif->tif_encodetile = PredictorEncodeTile;
	}
	return (1);
}

开发者ID:shivshankardayal，项目名称:Universal-C-C--，代码行数:26，代码来源:tif_predict.c

示例3: PredictorSetup

static int
PredictorSetup(TIFF* tif)
{
	static const char module[] = "PredictorSetup";

	TIFFPredictorState* sp = PredictorState(tif);
	TIFFDirectory* td = &tif->tif_dir;

	switch (sp->predictor)		/* no differencing */
	{
		case PREDICTOR_NONE:
			return 1;
		case PREDICTOR_HORIZONTAL:
			if (td->td_bitspersample != 8
			    && td->td_bitspersample != 16
			    && td->td_bitspersample != 32) {
				TIFFErrorExt(tif->tif_clientdata, module,
				    "Horizontal differencing \"Predictor\" not supported with %d-bit samples",
				    td->td_bitspersample);
				return 0;
			}
			break;
		case PREDICTOR_FLOATINGPOINT:
			if (td->td_sampleformat != SAMPLEFORMAT_IEEEFP) {
				TIFFErrorExt(tif->tif_clientdata, module,
				    "Floating point \"Predictor\" not supported with %d data format",
				    td->td_sampleformat);
				return 0;
			}
                        if (td->td_bitspersample != 16
                            && td->td_bitspersample != 24
                            && td->td_bitspersample != 32
                            && td->td_bitspersample != 64) { /* Should 64 be allowed? */
                                TIFFErrorExt(tif->tif_clientdata, module,
                                             "Floating point \"Predictor\" not supported with %d-bit samples",
                                             td->td_bitspersample);
				return 0;
                            }
			break;
		default:
			TIFFErrorExt(tif->tif_clientdata, module,
			    "\"Predictor\" value %d not supported",
			    sp->predictor);
			return 0;
	}
	sp->stride = (td->td_planarconfig == PLANARCONFIG_CONTIG ?
	    td->td_samplesperpixel : 1);
	/*
	 * Calculate the scanline/tile-width size in bytes.
	 */
	if (isTiled(tif))
		sp->rowsize = TIFFTileRowSize(tif);
	else
		sp->rowsize = TIFFScanlineSize(tif);
	if (sp->rowsize == 0)
		return 0;

	return 1;
}

开发者ID:vadz，项目名称:libtiff，代码行数:59，代码来源:tif_predict.c

示例4: horAcc8

TIFF_NOSANITIZE_UNSIGNED_INT_OVERFLOW
static int
horAcc8(TIFF* tif, uint8* cp0, tmsize_t cc)
{
	tmsize_t stride = PredictorState(tif)->stride;

	unsigned char* cp = (unsigned char*) cp0;
    if((cc%stride)!=0)
    {
        TIFFErrorExt(tif->tif_clientdata, "horAcc8",
                     "%s", "(cc%stride)!=0");
        return 0;
    }

	if (cc > stride) {
		/*
		 * Pipeline the most common cases.
		 */
		if (stride == 3)  {
			unsigned int cr = cp[0];
			unsigned int cg = cp[1];
			unsigned int cb = cp[2];
			cc -= 3;
			cp += 3;
			while (cc>0) {
				cp[0] = (unsigned char) ((cr += cp[0]) & 0xff);
				cp[1] = (unsigned char) ((cg += cp[1]) & 0xff);
				cp[2] = (unsigned char) ((cb += cp[2]) & 0xff);
				cc -= 3;
				cp += 3;
			}
		} else if (stride == 4)  {
			unsigned int cr = cp[0];
			unsigned int cg = cp[1];
			unsigned int cb = cp[2];
			unsigned int ca = cp[3];
			cc -= 4;
			cp += 4;
			while (cc>0) {
				cp[0] = (unsigned char) ((cr += cp[0]) & 0xff);
				cp[1] = (unsigned char) ((cg += cp[1]) & 0xff);
				cp[2] = (unsigned char) ((cb += cp[2]) & 0xff);
				cp[3] = (unsigned char) ((ca += cp[3]) & 0xff);
				cc -= 4;
				cp += 4;
			}
		} else  {
			cc -= stride;
			do {
				REPEAT4(stride, cp[stride] =
					(unsigned char) ((cp[stride] + *cp) & 0xff); cp++)
				cc -= stride;
			} while (cc>0);
		}
	}
	return 1;
}

开发者ID:vadz，项目名称:libtiff，代码行数:57，代码来源:tif_predict.c

示例5: horAcc8

static void
horAcc8(TIFF* tif, uint8* cp0, tmsize_t cc)
{
	tmsize_t stride = PredictorState(tif)->stride;

	char* cp = (char*) cp0;
	assert((cc%stride)==0);
	if (cc > stride) {
		/*
		 * Pipeline the most common cases.
		 */
		if (stride == 3)  {
			unsigned int cr = cp[0];
			unsigned int cg = cp[1];
			unsigned int cb = cp[2];
			cc -= 3;
			cp += 3;
			while (cc>0) {
				cp[0] = (char) (cr += cp[0]);
				cp[1] = (char) (cg += cp[1]);
				cp[2] = (char) (cb += cp[2]);
				cc -= 3;
				cp += 3;
			}
		} else if (stride == 4)  {
			unsigned int cr = cp[0];
			unsigned int cg = cp[1];
			unsigned int cb = cp[2];
			unsigned int ca = cp[3];
			cc -= 4;
			cp += 4;
			while (cc>0) {
				cp[0] = (char) (cr += cp[0]);
				cp[1] = (char) (cg += cp[1]);
				cp[2] = (char) (cb += cp[2]);
				cp[3] = (char) (ca += cp[3]);
				cc -= 4;
				cp += 4;
			}
		} else  {
			cc -= stride;
			do {
				REPEAT4(stride, cp[stride] =
					(char) (cp[stride] + *cp); cp++)
				cc -= stride;
			} while (cc>0);
		}
	}
}

开发者ID:Strongc，项目名称:Tesseract_Ocr，代码行数:49，代码来源:tif_predict.c

示例6: horAcc16

static void
horAcc16(TIFF* tif, uint8* cp0, tmsize_t cc)
{
	tmsize_t stride = PredictorState(tif)->stride;
	uint16* wp = (uint16*) cp0;
	tmsize_t wc = cc / 2;

	assert((cc%(2*stride))==0);

	if (wc > stride) {
		wc -= stride;
		do {
			REPEAT4(stride, wp[stride] = (uint16)(((unsigned int)wp[stride] + (unsigned int)wp[0]) & 0xffff); wp++)
			wc -= stride;
		} while (wc > 0);
	}

开发者ID:ElaraFX，项目名称:libtiff，代码行数:16，代码来源:tif_predict.c

示例7: swabHorAcc16

static void
swabHorAcc16(TIFF* tif, uint8* cp0, tmsize_t cc)
{
	tmsize_t stride = PredictorState(tif)->stride;
	uint16* wp = (uint16*) cp0;
	tmsize_t wc = cc / 2;

	assert((cc%(2*stride))==0);

	if (wc > stride) {
		TIFFSwabArrayOfShort(wp, wc);
		wc -= stride;
		do {
			REPEAT4(stride, wp[stride] += wp[0]; wp++)
			wc -= stride;
		} while (wc > 0);
	}

开发者ID:Strongc，项目名称:Tesseract_Ocr，代码行数:17，代码来源:tif_predict.c

示例8: PredictorSetupDecode

static int
PredictorSetupDecode(TIFF* tif) {
    TIFFPredictorState* sp = PredictorState(tif);
    TIFFDirectory* td = &tif->tif_dir;

    if (!(*sp->setupdecode)(tif) || !PredictorSetup(tif)) {
        return (0);
    }
    if (sp->predictor == 2) {
        switch (td->td_bitspersample) {
        case 8:
            sp->pfunc = horAcc8;
            break;
        case 16:
            sp->pfunc = horAcc16;
            break;
        }
        /*
         * Override default decoding method with
         * one that does the predictor stuff.
         */
        sp->coderow = tif->tif_decoderow;
        tif->tif_decoderow = PredictorDecodeRow;
        sp->codestrip = tif->tif_decodestrip;
        tif->tif_decodestrip = PredictorDecodeTile;
        sp->codetile = tif->tif_decodetile;
        tif->tif_decodetile = PredictorDecodeTile;
        /*
         * If the data is horizontally differenced
         * 16-bit data that requires byte-swapping,
         * then it must be byte swapped before the
         * accumulation step.  We do this with a
         * special-purpose routine and override the
         * normal post decoding logic that the library
         * setup when the directory was read.
         */
        if (tif->tif_flags & TIFF_SWAB) {
            if (sp->pfunc == horAcc16) {
                sp->pfunc = swabHorAcc16;
                tif->tif_postdecode = _TIFFNoPostDecode;
            } /* else handle 32-bit case... */
        }
    }
    return (1);
}

开发者ID:353，项目名称:viewercv，代码行数:45，代码来源:tif_predict.c

示例9: horAcc8

static void
horAcc8(TIFF* tif, tidata_t cp0, tsize_t cc)
{
	TIFFPredictorState* sp = PredictorState(tif);
	tsize_t stride = sp->stride;

	char* cp = (char*) cp0;
	if (cc > stride) {
		cc -= stride;
		/*
		 * Pipeline the most common cases.
		 */
		if (stride == 3)  {
			u_int cr = cp[0];
			u_int cg = cp[1];
			u_int cb = cp[2];
			do {
				cc -= 3, cp += 3;
				cp[0] = (cr += cp[0]);
				cp[1] = (cg += cp[1]);
				cp[2] = (cb += cp[2]);
			} while ((int32) cc > 0);
		} else if (stride == 4)  {
			u_int cr = cp[0];
			u_int cg = cp[1];
			u_int cb = cp[2];
			u_int ca = cp[3];
			do {
				cc -= 4, cp += 4;
				cp[0] = (cr += cp[0]);
				cp[1] = (cg += cp[1]);
				cp[2] = (cb += cp[2]);
				cp[3] = (ca += cp[3]);
			} while ((int32) cc > 0);
		} else  {
			do {
				REPEAT4(stride, cp[stride] += *cp; cp++)
				cc -= stride;
			} while ((int32) cc > 0);
		}
	}

开发者ID:shivshankardayal，项目名称:Universal-C-C--，代码行数:41，代码来源:tif_predict.c

示例10: horAcc16

TIFF_NOSANITIZE_UNSIGNED_INT_OVERFLOW
static int
horAcc16(TIFF* tif, uint8* cp0, tmsize_t cc)
{
	tmsize_t stride = PredictorState(tif)->stride;
	uint16* wp = (uint16*) cp0;
	tmsize_t wc = cc / 2;

    if((cc%(2*stride))!=0)
    {
        TIFFErrorExt(tif->tif_clientdata, "horAcc16",
                     "%s", "cc%(2*stride))!=0");
        return 0;
    }

	if (wc > stride) {
		wc -= stride;
		do {
			REPEAT4(stride, wp[stride] = (uint16)(((unsigned int)wp[stride] + (unsigned int)wp[0]) & 0xffff); wp++)
			wc -= stride;
		} while (wc > 0);
	}

开发者ID:vadz，项目名称:libtiff，代码行数:22，代码来源:tif_predict.c

示例11: PredictorSetupDecode

static int
PredictorSetupDecode(TIFF* tif)
{
	TIFFPredictorState* sp = PredictorState(tif);
	TIFFDirectory* td = &tif->tif_dir;

	if (!(*sp->setupdecode)(tif) || !PredictorSetup(tif))
		return 0;

	if (sp->predictor == 2) {
		switch (td->td_bitspersample) {
			case 8:  sp->pfunc = horAcc8; break;
			case 16: sp->pfunc = horAcc16; break;
		}
		/*
		 * Override default decoding method with one that does the
		 * predictor stuff.
		 */
		sp->coderow = tif->tif_decoderow;
		tif->tif_decoderow = PredictorDecodeRow;
		sp->codestrip = tif->tif_decodestrip;
		tif->tif_decodestrip = PredictorDecodeTile;
		sp->codetile = tif->tif_decodetile;
		tif->tif_decodetile = PredictorDecodeTile;
		/*
		 * If the data is horizontally differenced 16-bit data that
		 * requires byte-swapping, then it must be byte swapped before
		 * the accumulation step.  We do this with a special-purpose
		 * routine and override the normal post decoding logic that
		 * the library setup when the directory was read.
		 */
		if (tif->tif_flags & TIFF_SWAB) {
			if (sp->pfunc == horAcc16) {
				sp->pfunc = swabHorAcc16;
				tif->tif_postdecode = _TIFFNoPostDecode;
			} /* else handle 32-bit case... */
		}
	}

	else if (sp->predictor == 3) {
		sp->pfunc = fpAcc;
		/*
		 * Override default decoding method with one that does the
		 * predictor stuff.
		 */
		sp->coderow = tif->tif_decoderow;
		tif->tif_decoderow = PredictorDecodeRow;
		sp->codestrip = tif->tif_decodestrip;
		tif->tif_decodestrip = PredictorDecodeTile;
		sp->codetile = tif->tif_decodetile;
		tif->tif_decodetile = PredictorDecodeTile;
		/*
		 * The data should not be swapped outside of the floating
		 * point predictor, the accumulation routine should return
		 * byres in the native order.
		 */
		if (tif->tif_flags & TIFF_SWAB) {
			tif->tif_postdecode = _TIFFNoPostDecode;
		}
		/*
		 * Allocate buffer to keep the decoded bytes before
		 * rearranging in the ight order
		 */
	}

	return 1;
}

开发者ID:BOTCrusher，项目名称:sagetv，代码行数:67，代码来源:tif_predict.c

示例12: PredictorSetupEncode

static int
PredictorSetupEncode(TIFF* tif)
{
	TIFFPredictorState* sp = PredictorState(tif);
	TIFFDirectory* td = &tif->tif_dir;

	if (!(*sp->setupencode)(tif) || !PredictorSetup(tif))
		return 0;

	if (sp->predictor == 2) {
		switch (td->td_bitspersample) {
			case 8:  sp->encodepfunc = horDiff8; break;
			case 16: sp->encodepfunc = horDiff16; break;
			case 32: sp->encodepfunc = horDiff32; break;
		}
		/*
		 * Override default encoding method with one that does the
		 * predictor stuff.
		 */
                if( tif->tif_encoderow != PredictorEncodeRow )
                {
                    sp->encoderow = tif->tif_encoderow;
                    tif->tif_encoderow = PredictorEncodeRow;
                    sp->encodestrip = tif->tif_encodestrip;
                    tif->tif_encodestrip = PredictorEncodeTile;
                    sp->encodetile = tif->tif_encodetile;
                    tif->tif_encodetile = PredictorEncodeTile;
                }

                /*
                 * If the data is horizontally differenced 16-bit data that
                 * requires byte-swapping, then it must be byte swapped after
                 * the differentiation step.  We do this with a special-purpose
                 * routine and override the normal post decoding logic that
                 * the library setup when the directory was read.
                 */
                if (tif->tif_flags & TIFF_SWAB) {
                    if (sp->encodepfunc == horDiff16) {
                            sp->encodepfunc = swabHorDiff16;
                            tif->tif_postdecode = _TIFFNoPostDecode;
                    } else if (sp->encodepfunc == horDiff32) {
                            sp->encodepfunc = swabHorDiff32;
                            tif->tif_postdecode = _TIFFNoPostDecode;
                    }
                }
        }

	else if (sp->predictor == 3) {
		sp->encodepfunc = fpDiff;
		/*
		 * Override default encoding method with one that does the
		 * predictor stuff.
		 */
                if( tif->tif_encoderow != PredictorEncodeRow )
                {
                    sp->encoderow = tif->tif_encoderow;
                    tif->tif_encoderow = PredictorEncodeRow;
                    sp->encodestrip = tif->tif_encodestrip;
                    tif->tif_encodestrip = PredictorEncodeTile;
                    sp->encodetile = tif->tif_encodetile;
                    tif->tif_encodetile = PredictorEncodeTile;
                }
	}

	return 1;
}

开发者ID:vadz，项目名称:libtiff，代码行数:66，代码来源:tif_predict.c

注：本文中的PredictorState函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。

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C++ PredictorState函数代码示例

示例1: PredictorSetup

示例2: PredictorSetupEncode

示例3: PredictorSetup

示例4: horAcc8

示例5: horAcc8

示例6: horAcc16

示例7: swabHorAcc16

示例8: PredictorSetupDecode

示例9: horAcc8

示例10: horAcc16

示例11: PredictorSetupDecode

示例12: PredictorSetupEncode

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