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JNI: Fix *Image() array size issues w/ align != 1

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+ check for mismatch between C and Java APIs in *saveImage().
This commit is contained in:
DRC
2024-08-22 16:55:55 -04:00
parent d44fc54f94
commit 0acb084464
1 changed files with 21 additions and 13 deletions
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34
turbojpeg-jni.c
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@@ -1,5 +1,5 @@
/*
* Copyright (C)2011-2023 D. R. Commander. All Rights Reserved.
* Copyright (C)2011-2024 D. R. Commander. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
@@ -91,6 +91,8 @@
cArray = NULL; \
}
#define PAD(v, p) ((v + (p) - 1) & (~((p) - 1)))
/* TurboJPEG 1.2.x: TJ::bufSize() */
JNIEXPORT jint JNICALL Java_org_libjpegturbo_turbojpeg_TJ_bufSize
(JNIEnv *env, jclass cls, jint width, jint height, jint jpegSubsamp)
@@ -1274,7 +1276,8 @@ JNIEXPORT jobject JNICALL Java_org_libjpegturbo_turbojpeg_TJCompressor_loadImage
{
tjhandle handle = NULL;
void *dstBuf = NULL, *jdstPtr;
int width, *warr, height, *harr, pixelFormat, *pfarr, n;
int width, *warr, height, *harr, pixelFormat, *pfarr;
jsize arraySize, pitch;
const char *filename = NULL;
jboolean isCopy;
jobject jdstBuf = NULL;
@@ -1331,13 +1334,14 @@ JNIEXPORT jobject JNICALL Java_org_libjpegturbo_turbojpeg_TJCompressor_loadImage
pfarr[0] = pixelFormat;
(*env)->ReleasePrimitiveArrayCritical(env, jpixelFormat, pfarr, 0);
n = width * height * tjPixelSize[pixelFormat];
pitch = PAD(width * tjPixelSize[pixelFormat], align);
arraySize = pitch * height;
if (precision == 8)
jdstBuf = (*env)->NewByteArray(env, n);
jdstBuf = (*env)->NewByteArray(env, arraySize);
else
jdstBuf = (*env)->NewShortArray(env, n);
jdstBuf = (*env)->NewShortArray(env, arraySize);
BAILIF0NOEC(jdstPtr = (*env)->GetPrimitiveArrayCritical(env, jdstBuf, 0));
memcpy(jdstPtr, dstBuf, n * (precision > 8 ? 2 : 1));
memcpy(jdstPtr, dstBuf, arraySize * (precision > 8 ? 2 : 1));
(*env)->ReleasePrimitiveArrayCritical(env, jdstBuf, jdstPtr, 0);
bailout:
@@ -1354,29 +1358,33 @@ JNIEXPORT void JNICALL Java_org_libjpegturbo_turbojpeg_TJDecompressor_saveImage
tjhandle handle = NULL;
void *srcBuf = NULL, *jsrcPtr;
const char *filename = NULL;
int n;
jsize arraySize, actualPitch;
jboolean isCopy;
GET_HANDLE();
if ((precision != 8 && precision != 12 && precision != 16) ||
jfilename == NULL || jsrcBuf == NULL || width < 1 || height < 1 ||
pixelFormat < 0 || pixelFormat >= TJ_NUMPF)
jfilename == NULL || jsrcBuf == NULL || width < 1 || pitch < 0 ||
height < 1 || pixelFormat < 0 ||
pixelFormat >= org_libjpegturbo_turbojpeg_TJ_NUMPF)
THROW_ARG("Invalid argument in saveImage()");
if (org_libjpegturbo_turbojpeg_TJ_NUMPF != TJ_NUMPF)
THROW_ARG("Mismatch between Java and C API");
if ((unsigned long long)width * (unsigned long long)height *
(unsigned long long)tjPixelSize[pixelFormat] >
(unsigned long long)((unsigned int)-1))
THROW_ARG("Image is too large");
n = width * height * tjPixelSize[pixelFormat];
if ((*env)->GetArrayLength(env, jsrcBuf) < n)
actualPitch = (pitch == 0) ? width * tjPixelSize[pixelFormat] : pitch;
arraySize = actualPitch * height;
if ((*env)->GetArrayLength(env, jsrcBuf) < arraySize)
THROW_ARG("Source buffer is not large enough");
if ((srcBuf = malloc(n * (precision > 8 ? 2 : 1))) == NULL)
if ((srcBuf = malloc(arraySize * (precision > 8 ? 2 : 1))) == NULL)
THROW_MEM();
BAILIF0NOEC(jsrcPtr = (*env)->GetPrimitiveArrayCritical(env, jsrcBuf, 0));
memcpy(srcBuf, jsrcPtr, n * (precision > 8 ? 2 : 1));
memcpy(srcBuf, jsrcPtr, arraySize * (precision > 8 ? 2 : 1));
(*env)->ReleasePrimitiveArrayCritical(env, jsrcBuf, jsrcPtr, 0);
BAILIF0(filename = (*env)->GetStringUTFChars(env, jfilename, &isCopy));