572 lines
19 KiB
C
572 lines
19 KiB
C
#include <jni.h>
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#include <stdio.h>
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#include <setjmp.h>
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#include <libjpeg/jpeglib.h>
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#include <android/bitmap.h>
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#include <libwebp/webp/decode.h>
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#include <libwebp/webp/encode.h>
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#include "utils.h"
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#include "image.h"
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jclass jclass_NullPointerException;
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jclass jclass_RuntimeException;
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jclass jclass_Options;
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jfieldID jclass_Options_inJustDecodeBounds;
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jfieldID jclass_Options_outHeight;
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jfieldID jclass_Options_outWidth;
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jclass jclass_Bitmap;
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jmethodID jclass_Bitmap_createBitmap;
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jclass jclass_Config;
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jfieldID jclass_Config_ARGB_8888;
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const uint32_t PGPhotoEnhanceHistogramBins = 256;
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const uint32_t PGPhotoEnhanceSegments = 4;
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jclass createGlobarRef(JNIEnv *env, jclass class) {
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if (class) {
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return (*env)->NewGlobalRef(env, class);
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}
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return 0;
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}
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jint imageOnJNILoad(JavaVM *vm, void *reserved, JNIEnv *env) {
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jclass_NullPointerException = createGlobarRef(env, (*env)->FindClass(env, "java/lang/NullPointerException"));
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if (jclass_NullPointerException == 0) {
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return -1;
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}
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jclass_RuntimeException = createGlobarRef(env, (*env)->FindClass(env, "java/lang/RuntimeException"));
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if (jclass_RuntimeException == 0) {
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return -1;
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}
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jclass_Options = createGlobarRef(env, (*env)->FindClass(env, "android/graphics/BitmapFactory$Options"));
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if (jclass_Options == 0) {
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return -1;
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}
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jclass_Options_inJustDecodeBounds = (*env)->GetFieldID(env, jclass_Options, "inJustDecodeBounds", "Z");
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if (jclass_Options_inJustDecodeBounds == 0) {
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return -1;
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}
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jclass_Options_outHeight = (*env)->GetFieldID(env, jclass_Options, "outHeight", "I");
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if (jclass_Options_outHeight == 0) {
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return -1;
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}
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jclass_Options_outWidth = (*env)->GetFieldID(env, jclass_Options, "outWidth", "I");
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if (jclass_Options_outWidth == 0) {
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return -1;
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}
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jclass_Bitmap = createGlobarRef(env, (*env)->FindClass(env, "android/graphics/Bitmap"));
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if (jclass_Bitmap == 0) {
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return -1;
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}
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jclass_Bitmap_createBitmap = (*env)->GetStaticMethodID(env, jclass_Bitmap, "createBitmap", "(IILandroid/graphics/Bitmap$Config;)Landroid/graphics/Bitmap;");
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if (jclass_Bitmap_createBitmap == 0) {
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return -1;
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}
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jclass_Config = createGlobarRef(env, (*env)->FindClass(env, "android/graphics/Bitmap$Config"));
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if (jclass_Config == 0) {
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return -1;
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}
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jclass_Config_ARGB_8888 = (*env)->GetStaticFieldID(env, jclass_Config, "ARGB_8888", "Landroid/graphics/Bitmap$Config;");
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if (jclass_Config_ARGB_8888 == 0) {
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return -1;
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}
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return JNI_VERSION_1_6;
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}
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static inline uint64_t get_colors (const uint8_t *p) {
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return p[0] + (p[1] << 16) + ((uint64_t)p[2] << 32);
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}
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static void fastBlurMore(int imageWidth, int imageHeight, int imageStride, void *pixels, int radius) {
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uint8_t *pix = (uint8_t *)pixels;
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const int w = imageWidth;
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const int h = imageHeight;
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const int stride = imageStride;
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const int r1 = radius + 1;
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const int div = radius * 2 + 1;
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if (radius > 15 || div >= w || div >= h || w * h > 128 * 128 || imageStride > imageWidth * 4) {
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return;
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}
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uint64_t *rgb = malloc(imageWidth * imageHeight * sizeof(uint64_t));
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if (rgb == NULL) {
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return;
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}
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int x, y, i;
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int yw = 0;
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const int we = w - r1;
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for (y = 0; y < h; y++) {
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uint64_t cur = get_colors (&pix[yw]);
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uint64_t rgballsum = -radius * cur;
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uint64_t rgbsum = cur * ((r1 * (r1 + 1)) >> 1);
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for (i = 1; i <= radius; i++) {
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uint64_t cur = get_colors (&pix[yw + i * 4]);
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rgbsum += cur * (r1 - i);
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rgballsum += cur;
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}
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x = 0;
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#define update(start, middle, end) \
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rgb[y * w + x] = (rgbsum >> 6) & 0x00FF00FF00FF00FF; \
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rgballsum += get_colors (&pix[yw + (start) * 4]) - 2 * get_colors (&pix[yw + (middle) * 4]) + get_colors (&pix[yw + (end) * 4]); \
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rgbsum += rgballsum; \
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x++; \
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while (x < r1) {
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update (0, x, x + r1);
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}
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while (x < we) {
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update (x - r1, x, x + r1);
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}
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while (x < w) {
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update (x - r1, x, w - 1);
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}
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#undef update
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yw += stride;
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}
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const int he = h - r1;
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for (x = 0; x < w; x++) {
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uint64_t rgballsum = -radius * rgb[x];
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uint64_t rgbsum = rgb[x] * ((r1 * (r1 + 1)) >> 1);
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for (i = 1; i <= radius; i++) {
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rgbsum += rgb[i * w + x] * (r1 - i);
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rgballsum += rgb[i * w + x];
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}
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y = 0;
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int yi = x * 4;
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#define update(start, middle, end) \
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int64_t res = rgbsum >> 6; \
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pix[yi] = res; \
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pix[yi + 1] = res >> 16; \
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pix[yi + 2] = res >> 32; \
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rgballsum += rgb[x + (start) * w] - 2 * rgb[x + (middle) * w] + rgb[x + (end) * w]; \
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rgbsum += rgballsum; \
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y++; \
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yi += stride;
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while (y < r1) {
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update (0, y, y + r1);
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}
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while (y < he) {
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update (y - r1, y, y + r1);
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}
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while (y < h) {
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update (y - r1, y, h - 1);
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}
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#undef update
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}
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}
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static void fastBlur(int imageWidth, int imageHeight, int imageStride, void *pixels, int radius) {
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uint8_t *pix = (uint8_t *)pixels;
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const int w = imageWidth;
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const int h = imageHeight;
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const int stride = imageStride;
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const int r1 = radius + 1;
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const int div = radius * 2 + 1;
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int shift;
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if (radius == 1) {
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shift = 2;
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} else if (radius == 3) {
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shift = 4;
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} else if (radius == 7) {
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shift = 6;
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} else if (radius == 15) {
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shift = 8;
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} else {
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return;
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}
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if (radius > 15 || div >= w || div >= h || w * h > 128 * 128 || imageStride > imageWidth * 4) {
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return;
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}
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uint64_t *rgb = malloc(imageWidth * imageHeight * sizeof(uint64_t));
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if (rgb == NULL) {
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return;
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}
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int x, y, i;
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int yw = 0;
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const int we = w - r1;
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for (y = 0; y < h; y++) {
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uint64_t cur = get_colors (&pix[yw]);
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uint64_t rgballsum = -radius * cur;
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uint64_t rgbsum = cur * ((r1 * (r1 + 1)) >> 1);
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for (i = 1; i <= radius; i++) {
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uint64_t cur = get_colors (&pix[yw + i * 4]);
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rgbsum += cur * (r1 - i);
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rgballsum += cur;
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}
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x = 0;
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#define update(start, middle, end) \
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rgb[y * w + x] = (rgbsum >> shift) & 0x00FF00FF00FF00FFLL; \
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rgballsum += get_colors (&pix[yw + (start) * 4]) - 2 * get_colors (&pix[yw + (middle) * 4]) + get_colors (&pix[yw + (end) * 4]); \
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rgbsum += rgballsum; \
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x++; \
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while (x < r1) {
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update (0, x, x + r1);
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}
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while (x < we) {
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update (x - r1, x, x + r1);
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}
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while (x < w) {
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update (x - r1, x, w - 1);
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}
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#undef update
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yw += stride;
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}
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const int he = h - r1;
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for (x = 0; x < w; x++) {
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uint64_t rgballsum = -radius * rgb[x];
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uint64_t rgbsum = rgb[x] * ((r1 * (r1 + 1)) >> 1);
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for (i = 1; i <= radius; i++) {
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rgbsum += rgb[i * w + x] * (r1 - i);
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rgballsum += rgb[i * w + x];
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}
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y = 0;
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int yi = x * 4;
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#define update(start, middle, end) \
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int64_t res = rgbsum >> shift; \
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pix[yi] = res; \
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pix[yi + 1] = res >> 16; \
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pix[yi + 2] = res >> 32; \
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rgballsum += rgb[x + (start) * w] - 2 * rgb[x + (middle) * w] + rgb[x + (end) * w]; \
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rgbsum += rgballsum; \
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y++; \
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yi += stride;
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while (y < r1) {
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update (0, y, y + r1);
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}
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while (y < he) {
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update (y - r1, y, y + r1);
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}
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while (y < h) {
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update (y - r1, y, h - 1);
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}
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#undef update
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}
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free(rgb);
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}
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typedef struct my_error_mgr {
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struct jpeg_error_mgr pub;
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jmp_buf setjmp_buffer;
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} *my_error_ptr;
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METHODDEF(void) my_error_exit(j_common_ptr cinfo) {
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my_error_ptr myerr = (my_error_ptr) cinfo->err;
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(*cinfo->err->output_message) (cinfo);
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longjmp(myerr->setjmp_buffer, 1);
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}
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JNIEXPORT void Java_org_telegram_messenger_Utilities_blurBitmap(JNIEnv *env, jclass class, jobject bitmap, int radius, int unpin) {
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if (!bitmap) {
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return;
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}
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AndroidBitmapInfo info;
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if (AndroidBitmap_getInfo(env, bitmap, &info) < 0) {
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return;
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}
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if (info.format != ANDROID_BITMAP_FORMAT_RGBA_8888 || !info.width || !info.height || !info.stride) {
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return;
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}
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void *pixels = 0;
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if (AndroidBitmap_lockPixels(env, bitmap, &pixels) < 0) {
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return;
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}
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if (radius <= 3) {
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fastBlur(info.width, info.height, info.stride, pixels, radius);
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} else {
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fastBlurMore(info.width, info.height, info.stride, pixels, radius);
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}
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if (unpin) {
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AndroidBitmap_unlockPixels(env, bitmap);
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}
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}
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JNIEXPORT void Java_org_telegram_messenger_Utilities_calcCDT(JNIEnv *env, jclass class, jobject hsvBuffer, int width, int height, jobject buffer) {
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float imageWidth = width;
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float imageHeight = height;
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float _clipLimit = 1.25f;
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uint32_t totalSegments = PGPhotoEnhanceSegments * PGPhotoEnhanceSegments;
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uint32_t tileArea = (uint32_t)(floorf(imageWidth / PGPhotoEnhanceSegments) * floorf(imageHeight / PGPhotoEnhanceSegments));
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uint32_t clipLimit = (uint32_t)max(1, _clipLimit * tileArea / (float) PGPhotoEnhanceHistogramBins);
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float scale = 255.0f / (float) tileArea;
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unsigned char *bytes = (*env)->GetDirectBufferAddress(env, hsvBuffer);
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uint32_t **hist = calloc(totalSegments, sizeof(uint32_t *));
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uint32_t **cdfs = calloc(totalSegments, sizeof(uint32_t *));
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uint32_t *cdfsMin = calloc(totalSegments, sizeof(uint32_t));
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uint32_t *cdfsMax = calloc(totalSegments, sizeof(uint32_t));
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for (uint32_t a = 0; a < totalSegments; a++) {
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hist[a] = calloc(PGPhotoEnhanceHistogramBins, sizeof(uint32_t));
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cdfs[a] = calloc(PGPhotoEnhanceHistogramBins, sizeof(uint32_t));
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}
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float xMul = PGPhotoEnhanceSegments / imageWidth;
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float yMul = PGPhotoEnhanceSegments / imageHeight;
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for (uint32_t y = 0; y < imageHeight; y++) {
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uint32_t yOffset = y * width * 4;
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for (uint32_t x = 0; x < imageWidth; x++) {
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uint32_t index = x * 4 + yOffset;
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uint32_t tx = (uint32_t)(x * xMul);
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uint32_t ty = (uint32_t)(y * yMul);
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uint32_t t = ty * PGPhotoEnhanceSegments + tx;
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hist[t][bytes[index + 2]]++;
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}
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}
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for (uint32_t i = 0; i < totalSegments; i++) {
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if (clipLimit > 0) {
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uint32_t clipped = 0;
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for (uint32_t j = 0; j < PGPhotoEnhanceHistogramBins; ++j) {
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if (hist[i][j] > clipLimit) {
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clipped += hist[i][j] - clipLimit;
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hist[i][j] = clipLimit;
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}
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}
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uint32_t redistBatch = clipped / PGPhotoEnhanceHistogramBins;
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uint32_t residual = clipped - redistBatch * PGPhotoEnhanceHistogramBins;
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for (uint32_t j = 0; j < PGPhotoEnhanceHistogramBins; ++j) {
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hist[i][j] += redistBatch;
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}
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for (uint32_t j = 0; j < residual; ++j) {
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hist[i][j]++;
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}
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}
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memcpy(cdfs[i], hist[i], PGPhotoEnhanceHistogramBins * sizeof(uint32_t));
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uint32_t hMin = PGPhotoEnhanceHistogramBins - 1;
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for (uint32_t j = 0; j < hMin; ++j) {
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if (cdfs[j] != 0) {
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hMin = j;
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}
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}
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uint32_t cdf = 0;
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for (uint32_t j = hMin; j < PGPhotoEnhanceHistogramBins; ++j) {
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cdf += cdfs[i][j];
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cdfs[i][j] = (uint8_t) min(255, cdf * scale);
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}
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cdfsMin[i] = cdfs[i][hMin];
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cdfsMax[i] = cdfs[i][PGPhotoEnhanceHistogramBins - 1];
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}
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uint32_t resultSize = 4 * PGPhotoEnhanceHistogramBins * totalSegments;
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uint32_t resultBytesPerRow = 4 * PGPhotoEnhanceHistogramBins;
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unsigned char *result = (*env)->GetDirectBufferAddress(env, buffer);
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for (uint32_t tile = 0; tile < totalSegments; tile++) {
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uint32_t yOffset = tile * resultBytesPerRow;
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for (uint32_t i = 0; i < PGPhotoEnhanceHistogramBins; i++) {
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uint32_t index = i * 4 + yOffset;
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result[index] = (uint8_t)cdfs[tile][i];
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result[index + 1] = (uint8_t)cdfsMin[tile];
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result[index + 2] = (uint8_t)cdfsMax[tile];
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result[index + 3] = 255;
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}
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}
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for (uint32_t a = 0; a < totalSegments; a++) {
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free(hist[a]);
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free(cdfs[a]);
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}
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free(hist);
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free(cdfs);
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free(cdfsMax);
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free(cdfsMin);
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}
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JNIEXPORT int Java_org_telegram_messenger_Utilities_pinBitmap(JNIEnv *env, jclass class, jobject bitmap) {
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unsigned char *pixels;
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return AndroidBitmap_lockPixels(env, bitmap, &pixels) >= 0 ? 1 : 0;
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}
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JNIEXPORT void Java_org_telegram_messenger_Utilities_loadBitmap(JNIEnv *env, jclass class, jstring path, jobject bitmap, int scale, int width, int height, int stride) {
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AndroidBitmapInfo info;
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int i;
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if ((i = AndroidBitmap_getInfo(env, bitmap, &info)) >= 0) {
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char *fileName = (*env)->GetStringUTFChars(env, path, NULL);
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FILE *infile;
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if ((infile = fopen(fileName, "rb"))) {
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struct my_error_mgr jerr;
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struct jpeg_decompress_struct cinfo;
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cinfo.err = jpeg_std_error(&jerr.pub);
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jerr.pub.error_exit = my_error_exit;
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if (!setjmp(jerr.setjmp_buffer)) {
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jpeg_create_decompress(&cinfo);
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jpeg_stdio_src(&cinfo, infile);
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jpeg_read_header(&cinfo, TRUE);
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cinfo.scale_denom = scale;
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cinfo.scale_num = 1;
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jpeg_start_decompress(&cinfo);
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int row_stride = cinfo.output_width * cinfo.output_components;
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JSAMPARRAY buffer = (*cinfo.mem->alloc_sarray) ((j_common_ptr) &cinfo, JPOOL_IMAGE, row_stride, 1);
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unsigned char *pixels;
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if ((i = AndroidBitmap_lockPixels(env, bitmap, &pixels)) >= 0) {
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int rowCount = min(cinfo.output_height, height);
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int colCount = min(cinfo.output_width, width);
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while (cinfo.output_scanline < rowCount) {
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jpeg_read_scanlines(&cinfo, buffer, 1);
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//if (info.format == ANDROID_BITMAP_FORMAT_RGBA_8888) {
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if (cinfo.out_color_space == JCS_GRAYSCALE) {
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for (i = 0; i < colCount; i++) {
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float alpha = buffer[0][i] / 255.0f;
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pixels[i * 4] *= alpha;
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pixels[i * 4 + 1] *= alpha;
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pixels[i * 4 + 2] *= alpha;
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pixels[i * 4 + 3] = buffer[0][i];
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}
|
|
} else {
|
|
int c = 0;
|
|
for (i = 0; i < colCount; i++) {
|
|
pixels[i * 4] = buffer[0][i * 3];
|
|
pixels[i * 4 + 1] = buffer[0][i * 3 + 1];
|
|
pixels[i * 4 + 2] = buffer[0][i * 3 + 2];
|
|
pixels[i * 4 + 3] = 255;
|
|
c += 4;
|
|
}
|
|
}
|
|
//} else if (info.format == ANDROID_BITMAP_FORMAT_RGB_565) {
|
|
|
|
//}
|
|
|
|
pixels += stride;
|
|
}
|
|
|
|
AndroidBitmap_unlockPixels(env, bitmap);
|
|
} else {
|
|
throwException(env, "AndroidBitmap_lockPixels() failed ! error=%d", i);
|
|
}
|
|
|
|
jpeg_finish_decompress(&cinfo);
|
|
} else {
|
|
throwException(env, "the JPEG code has signaled an error");
|
|
}
|
|
|
|
jpeg_destroy_decompress(&cinfo);
|
|
fclose(infile);
|
|
} else {
|
|
throwException(env, "can't open %s", fileName);
|
|
}
|
|
|
|
(*env)->ReleaseStringUTFChars(env, path, fileName);
|
|
} else {
|
|
throwException(env, "AndroidBitmap_getInfo() failed ! error=%d", i);
|
|
}
|
|
}
|
|
|
|
JNIEXPORT jobject Java_org_telegram_messenger_Utilities_loadWebpImage(JNIEnv *env, jclass class, jobject buffer, int len, jobject options) {
|
|
if (!buffer) {
|
|
(*env)->ThrowNew(env, jclass_NullPointerException, "Input buffer can not be null");
|
|
return 0;
|
|
}
|
|
|
|
jbyte *inputBuffer = (*env)->GetDirectBufferAddress(env, buffer);
|
|
|
|
int bitmapWidth = 0;
|
|
int bitmapHeight = 0;
|
|
if (!WebPGetInfo((uint8_t*)inputBuffer, len, &bitmapWidth, &bitmapHeight)) {
|
|
(*env)->ThrowNew(env, jclass_RuntimeException, "Invalid WebP format");
|
|
return 0;
|
|
}
|
|
|
|
if (options && (*env)->GetBooleanField(env, options, jclass_Options_inJustDecodeBounds) == JNI_TRUE) {
|
|
(*env)->SetIntField(env, options, jclass_Options_outWidth, bitmapWidth);
|
|
(*env)->SetIntField(env, options, jclass_Options_outHeight, bitmapHeight);
|
|
return 0;
|
|
}
|
|
|
|
jobject value__ARGB_8888 = (*env)->GetStaticObjectField(env, jclass_Config, jclass_Config_ARGB_8888);
|
|
jobject outputBitmap = (*env)->CallStaticObjectMethod(env, jclass_Bitmap, jclass_Bitmap_createBitmap, (jint)bitmapWidth, (jint)bitmapHeight, value__ARGB_8888);
|
|
if (!outputBitmap) {
|
|
(*env)->ThrowNew(env, jclass_RuntimeException, "Failed to allocate Bitmap");
|
|
return 0;
|
|
}
|
|
outputBitmap = (*env)->NewLocalRef(env, outputBitmap);
|
|
|
|
AndroidBitmapInfo bitmapInfo;
|
|
if (AndroidBitmap_getInfo(env, outputBitmap, &bitmapInfo) != ANDROID_BITMAP_RESUT_SUCCESS) {
|
|
(*env)->DeleteLocalRef(env, outputBitmap);
|
|
(*env)->ThrowNew(env, jclass_RuntimeException, "Failed to get Bitmap information");
|
|
return 0;
|
|
}
|
|
|
|
void *bitmapPixels = 0;
|
|
if (AndroidBitmap_lockPixels(env, outputBitmap, &bitmapPixels) != ANDROID_BITMAP_RESUT_SUCCESS) {
|
|
(*env)->DeleteLocalRef(env, outputBitmap);
|
|
(*env)->ThrowNew(env, jclass_RuntimeException, "Failed to lock Bitmap pixels");
|
|
return 0;
|
|
}
|
|
|
|
if (!WebPDecodeRGBAInto((uint8_t*)inputBuffer, len, (uint8_t*)bitmapPixels, bitmapInfo.height * bitmapInfo.stride, bitmapInfo.stride)) {
|
|
AndroidBitmap_unlockPixels(env, outputBitmap);
|
|
(*env)->DeleteLocalRef(env, outputBitmap);
|
|
(*env)->ThrowNew(env, jclass_RuntimeException, "Failed to unlock Bitmap pixels");
|
|
return 0;
|
|
}
|
|
|
|
if (AndroidBitmap_unlockPixels(env, outputBitmap) != ANDROID_BITMAP_RESUT_SUCCESS) {
|
|
(*env)->DeleteLocalRef(env, outputBitmap);
|
|
(*env)->ThrowNew(env, jclass_RuntimeException, "Failed to unlock Bitmap pixels");
|
|
return 0;
|
|
}
|
|
|
|
return outputBitmap;
|
|
}
|