| /* | |
| * Copyright (c) 2003, 2020, Oracle and/or its affiliates. All rights reserved. | |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| * | |
| * This code is free software; you can redistribute it and/or modify it | |
| * under the terms of the GNU General Public License version 2 only, as | |
| * published by the Free Software Foundation. Oracle designates this | |
| * particular file as subject to the "Classpath" exception as provided | |
| * by Oracle in the LICENSE file that accompanied this code. | |
| * | |
| * This code is distributed in the hope that it will be useful, but WITHOUT | |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| * version 2 for more details (a copy is included in the LICENSE file that | |
| * accompanied this code). | |
| * | |
| * You should have received a copy of the GNU General Public License version | |
| * 2 along with this work; if not, write to the Free Software Foundation, | |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| * | |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| * or visit www.oracle.com if you need additional information or have any | |
| * questions. | |
| */ | |
| /* | |
| * FUNCTION | |
| * mlib_ImageConvMxN - image convolution with edge condition | |
| * | |
| * SYNOPSIS | |
| * mlib_status mlib_ImageConvMxN(mlib_image *dst, | |
| * const mlib_image *src, | |
| * const mlib_s32 *kernel, | |
| * mlib_s32 m, | |
| * mlib_s32 n, | |
| * mlib_s32 dm, | |
| * mlib_s32 dn, | |
| * mlib_s32 scale, | |
| * mlib_s32 cmask, | |
| * mlib_edge edge) | |
| * | |
| * ARGUMENTS | |
| * dst Pointer to destination image. | |
| * src Pointer to source image. | |
| * m Kernel width (m must be not less than 1). | |
| * n Kernel height (n must be not less than 1). | |
| * dm, dn Position of key element in convolution kernel. | |
| * kernel Pointer to convolution kernel. | |
| * scale The scaling factor to convert the input integer | |
| * coefficients into floating-point coefficients: | |
| * floating-point coefficient = integer coefficient * 2^(-scale) | |
| * cmask Channel mask to indicate the channels to be convolved. | |
| * Each bit of which represents a channel in the image. The | |
| * channels corresponded to 1 bits are those to be processed. | |
| * edge Type of edge condition. | |
| * | |
| * DESCRIPTION | |
| * 2-D convolution, MxN kernel. | |
| * | |
| * The center of the source image is mapped to the center of the | |
| * destination image. | |
| * The unselected channels are not overwritten. If both src and dst have | |
| * just one channel, cmask is ignored. | |
| * | |
| * The edge condition can be one of the following: | |
| * MLIB_EDGE_DST_NO_WRITE (default) | |
| * MLIB_EDGE_DST_FILL_ZERO | |
| * MLIB_EDGE_DST_COPY_SRC | |
| * MLIB_EDGE_SRC_EXTEND | |
| * | |
| * RESTRICTION | |
| * The src and the dst must be the same type and have same number | |
| * of channels (1, 2, 3, or 4). They can be in MLIB_BIT, MLIB_BYTE, | |
| * MLIB_SHORT, MLIB_USHORT or MLIB_INT data type. | |
| * m >= 1, n >= 1, | |
| * 0 <= dm < m, 0 <= dn < n. | |
| * For data type MLIB_BYTE: 16 <= scale <= 31 (to be compatible with VIS version) | |
| * For data type MLIB_SHORT: 17 <= scale <= 32 (to be compatible with VIS version) | |
| * For data type MLIB_USHORT: 17 <= scale <= 32 (to be compatible with VIS version) | |
| * For data type MLIB_INT: scale >= 0 | |
| */ | |
| #include "mlib_image.h" | |
| #include "mlib_ImageCheck.h" | |
| #include "mlib_ImageConv.h" | |
| #include "mlib_ImageCreate.h" | |
| #include "mlib_c_ImageConv.h" | |
| #include "mlib_ImageClipping.h" | |
| #include "mlib_ImageConvEdge.h" | |
| /***************************************************************/ | |
| JNIEXPORT | |
| mlib_status mlib_ImageConvMxN(mlib_image *dst, | |
| const mlib_image *src, | |
| const mlib_s32 *kernel, | |
| mlib_s32 m, | |
| mlib_s32 n, | |
| mlib_s32 dm, | |
| mlib_s32 dn, | |
| mlib_s32 scale, | |
| mlib_s32 cmask, | |
| mlib_edge edge) | |
| { | |
| MLIB_IMAGE_CHECK(dst); | |
| switch (mlib_ImageGetType(dst)) { | |
| case MLIB_BYTE: | |
| if (scale < 16 || scale > 31) | |
| return MLIB_FAILURE; | |
| break; | |
| case MLIB_SHORT: | |
| case MLIB_USHORT: | |
| if (scale < 17 || scale > 32) | |
| return MLIB_FAILURE; | |
| break; | |
| case MLIB_INT: | |
| if (scale < 0) | |
| return MLIB_FAILURE; | |
| break; | |
| default: | |
| return MLIB_FAILURE; | |
| } | |
| return mlib_ImageConvMxN_f(dst, src, kernel, m, n, dm, dn, scale, cmask, edge); | |
| } | |
| /***************************************************************/ | |
| mlib_status mlib_ImageConvMxN_f(mlib_image *dst, | |
| const mlib_image *src, | |
| const void *kernel, | |
| mlib_s32 m, | |
| mlib_s32 n, | |
| mlib_s32 dm, | |
| mlib_s32 dn, | |
| mlib_s32 scale, | |
| mlib_s32 cmask, | |
| mlib_edge edge) | |
| { | |
| mlib_image dst_i[1], src_i[1], dst_e[1], src_e[1]; | |
| mlib_type type; | |
| mlib_s32 nchan, dx_l, dx_r, dy_t, dy_b; | |
| mlib_s32 edg_sizes[8]; | |
| mlib_status ret; | |
| if (m < 1 || n < 1 || dm < 0 || dm > m - 1 || dn < 0 || dn > n - 1) | |
| return MLIB_FAILURE; | |
| if (kernel == NULL) | |
| return MLIB_NULLPOINTER; | |
| ret = | |
| mlib_ImageClippingMxN(dst_i, src_i, dst_e, src_e, edg_sizes, dst, src, m, n, dm, dn); | |
| if (ret != MLIB_SUCCESS) | |
| return ret; | |
| nchan = mlib_ImageGetChannels(dst); | |
| type = mlib_ImageGetType(dst); | |
| if (nchan == 1) | |
| cmask = 1; | |
| if ((cmask & ((1 << nchan) - 1)) == 0) | |
| return MLIB_SUCCESS; | |
| dx_l = edg_sizes[0]; | |
| dx_r = edg_sizes[1]; | |
| dy_t = edg_sizes[2]; | |
| dy_b = edg_sizes[3]; | |
| if (dx_l + dx_r + dy_t + dy_b == 0) | |
| edge = MLIB_EDGE_DST_NO_WRITE; | |
| if (edge != MLIB_EDGE_SRC_EXTEND) { | |
| if (mlib_ImageGetWidth(dst_i) >= m && mlib_ImageGetHeight(dst_i) >= n) { | |
| switch (type) { | |
| case MLIB_BYTE: | |
| ret = mlib_convMxNnw_u8(dst_i, src_i, kernel, m, n, dm, dn, scale, cmask); | |
| break; | |
| case MLIB_SHORT: | |
| if (mlib_ImageConvVersion(m, n, scale, type) == 0) | |
| ret = mlib_convMxNnw_s16(dst_i, src_i, kernel, m, n, dm, dn, scale, cmask); | |
| else | |
| ret = mlib_i_convMxNnw_s16(dst_i, src_i, kernel, m, n, dm, dn, scale, cmask); | |
| break; | |
| case MLIB_USHORT: | |
| if (mlib_ImageConvVersion(m, n, scale, type) == 0) | |
| ret = mlib_convMxNnw_u16(dst_i, src_i, kernel, m, n, dm, dn, scale, cmask); | |
| else | |
| ret = mlib_i_convMxNnw_u16(dst_i, src_i, kernel, m, n, dm, dn, scale, cmask); | |
| break; | |
| case MLIB_INT: | |
| ret = mlib_convMxNnw_s32(dst_i, src_i, kernel, m, n, dm, dn, scale, cmask); | |
| break; | |
| case MLIB_FLOAT: | |
| ret = mlib_convMxNnw_f32(dst_i, src_i, kernel, m, n, dm, dn, cmask); | |
| break; | |
| case MLIB_DOUBLE: | |
| ret = mlib_convMxNnw_d64(dst_i, src_i, kernel, m, n, dm, dn, cmask); | |
| break; | |
| default: | |
| /* For some reasons, there is no convolution routine for type MLIB_BIT. | |
| * For now, we silently ignore it (because this image type is not used by java), | |
| * but probably we have to report an error. | |
| */ | |
| break; | |
| } | |
| } | |
| switch (edge) { | |
| case MLIB_EDGE_DST_FILL_ZERO: | |
| mlib_ImageConvZeroEdge(dst_e, dx_l, dx_r, dy_t, dy_b, cmask); | |
| break; | |
| case MLIB_EDGE_DST_COPY_SRC: | |
| mlib_ImageConvCopyEdge(dst_e, src_e, dx_l, dx_r, dy_t, dy_b, cmask); | |
| break; | |
| default: | |
| /* Other edge conditions do not need additional handling. | |
| * Note also that they are not exposed in public Java API | |
| */ | |
| break; | |
| } | |
| } | |
| else { /* MLIB_EDGE_SRC_EXTEND */ | |
| /* adjust src_e image */ | |
| mlib_ImageSetSubimage(src_e, src_e, dx_l - dm, dy_t - dn, | |
| mlib_ImageGetWidth(src_e), mlib_ImageGetHeight(src_e)); | |
| switch (type) { | |
| case MLIB_BYTE: | |
| ret = | |
| mlib_convMxNext_u8(dst_e, src_e, kernel, m, n, dx_l, dx_r, dy_t, dy_b, scale, | |
| cmask); | |
| break; | |
| case MLIB_SHORT: | |
| if (mlib_ImageConvVersion(m, n, scale, type) == 0) | |
| ret = | |
| mlib_convMxNext_s16(dst_e, src_e, kernel, m, n, dx_l, dx_r, dy_t, dy_b, scale, | |
| cmask); | |
| else | |
| ret = | |
| mlib_i_convMxNext_s16(dst_e, src_e, kernel, m, n, dx_l, dx_r, dy_t, dy_b, | |
| scale, cmask); | |
| break; | |
| case MLIB_USHORT: | |
| if (mlib_ImageConvVersion(m, n, scale, type) == 0) | |
| ret = | |
| mlib_convMxNext_u16(dst_e, src_e, kernel, m, n, dx_l, dx_r, dy_t, dy_b, scale, | |
| cmask); | |
| else | |
| ret = | |
| mlib_i_convMxNext_u16(dst_e, src_e, kernel, m, n, dx_l, dx_r, dy_t, dy_b, | |
| scale, cmask); | |
| break; | |
| case MLIB_INT: | |
| ret = | |
| mlib_convMxNext_s32(dst_e, src_e, kernel, m, n, dx_l, dx_r, dy_t, dy_b, scale, | |
| cmask); | |
| break; | |
| case MLIB_FLOAT: | |
| mlib_convMxNext_f32(dst_e, src_e, kernel, m, n, dx_l, dx_r, dy_t, dy_b, cmask); | |
| break; | |
| case MLIB_DOUBLE: | |
| mlib_convMxNext_d64(dst_e, src_e, kernel, m, n, dx_l, dx_r, dy_t, dy_b, cmask); | |
| break; | |
| default: | |
| /* For some reasons, there is no convolution routine for type MLIB_BIT. | |
| * For now, we silently ignore it (because this image type is not used by java), | |
| * but probably we have to report an error. | |
| */ | |
| break; | |
| } | |
| } | |
| return ret; | |
| } | |
| /***************************************************************/ |