Esempio n. 1
0
JNIEXPORT void JNICALL TJCompressor_encodeYUV_12
	(JNIEnv *env, jobject obj, jarray src, jint srcElementSize, jint width,
		jint pitch, jint height, jint pf, jbyteArray dst, jint subsamp, jint flags)
{
	tjhandle handle=0;
	jsize arraySize=0;
	unsigned char *srcBuf=NULL, *dstBuf=NULL;

	gethandle();

	if(pf<0 || pf>=org_libjpegturbo_turbojpeg_TJ_NUMPF || width<1 || height<1
		|| pitch<0)
		_throwarg("Invalid argument in encodeYUV()");
	if(org_libjpegturbo_turbojpeg_TJ_NUMPF!=TJ_NUMPF)
		_throwarg("Mismatch between Java and C API");

	arraySize=(pitch==0)? width*tjPixelSize[pf]*height:pitch*height;
	if((*env)->GetArrayLength(env, src)*srcElementSize<arraySize)
		_throwarg("Source buffer is not large enough");
	if((*env)->GetArrayLength(env, dst)
		<(jsize)tjBufSizeYUV(width, height, subsamp))
		_throwarg("Destination buffer is not large enough");

	bailif0(srcBuf=(*env)->GetPrimitiveArrayCritical(env, src, 0));
	bailif0(dstBuf=(*env)->GetPrimitiveArrayCritical(env, dst, 0));

	if(tjEncodeYUV2(handle, srcBuf, width, pitch, height, pf, dstBuf, subsamp,
		flags)==-1)
		_throwtj();

	bailout:
	if(dstBuf) (*env)->ReleasePrimitiveArrayCritical(env, dst, dstBuf, 0);
	if(srcBuf) (*env)->ReleasePrimitiveArrayCritical(env, src, srcBuf, 0);
	return;
}
Esempio n. 2
0
JNIEXPORT void JNICALL Java_org_libjpegturbo_turbojpeg_TJCompressor_encodeYUV___3IIIII_3BII
	(JNIEnv *env, jobject obj, jintArray src, jint width, jint pitch,
		jint height, jint pf, jbyteArray dst, jint subsamp, jint flags)
{
	tjhandle handle=0;
	jsize arraySize=0;
	unsigned char *srcBuf=NULL, *dstBuf=NULL;

	gethandle();

	if(pf<0 || pf>=org_libjpegturbo_turbojpeg_TJ_NUMPF || width<1 || height<1
		|| pitch<0)
		_throw("Invalid argument in compress()");
	if(org_libjpegturbo_turbojpeg_TJ_NUMPF!=TJ_NUMPF)
		_throw("Mismatch between Java and C API");
	if(tjPixelSize[pf]!=sizeof(jint))
		_throw("Pixel format must be 32-bit when encoding from an integer buffer.");

	arraySize=(pitch==0)? width*height:pitch*height;
	if((*env)->GetArrayLength(env, src)<arraySize)
		_throw("Source buffer is not large enough");
	if((*env)->GetArrayLength(env, dst)
		<(jsize)tjBufSizeYUV(width, height, subsamp))
		_throw("Destination buffer is not large enough");

	bailif0(srcBuf=(*env)->GetPrimitiveArrayCritical(env, src, 0));
	bailif0(dstBuf=(*env)->GetPrimitiveArrayCritical(env, dst, 0));

	if(tjEncodeYUV2(handle, srcBuf, width, pitch*sizeof(jint), height, pf,
		dstBuf, subsamp, flags)==-1)
	{
		(*env)->ReleasePrimitiveArrayCritical(env, dst, dstBuf, 0);
		(*env)->ReleasePrimitiveArrayCritical(env, src, srcBuf, 0);
		dstBuf=srcBuf=NULL;
		_throw(tjGetErrorStr());
	}

	bailout:
	if(dstBuf) (*env)->ReleasePrimitiveArrayCritical(env, dst, dstBuf, 0);
	if(srcBuf) (*env)->ReleasePrimitiveArrayCritical(env, src, srcBuf, 0);
	return;
}
Esempio n. 3
0
void dotestyuv(unsigned char *srcbuf, int w, int h, int subsamp,
	char *filename)
{
	char tempstr[1024], tempstr2[80];
	FILE *file=NULL;  tjhandle handle=NULL;
	unsigned char *dstbuf=NULL;
	double start, elapsed;
	int i, retval=0, ps=tjPixelSize[pf];
	int yuvsize=0;

	yuvsize=tjBufSizeYUV(w, h, subsamp);
	if((dstbuf=(unsigned char *)malloc(yuvsize)) == NULL)
		_throwunix("allocating image buffer");

	if(!quiet)
		printf(">>>>>  %s (%s) <--> YUV %s  <<<<<\n", pixFormatStr[pf],
			(flags&TJFLAG_BOTTOMUP)? "Bottom-up":"Top-down", subNameLong[subsamp]);

	if(quiet==1)
		printf("%s\t%s\t%s\tN/A\t", pixFormatStr[pf],
			(flags&TJFLAG_BOTTOMUP)? "BU":"TD", subNameLong[subsamp]);

	if((handle=tjInitCompress())==NULL)
		_throwtj("executing tjInitCompress()");

	/* Execute once to preload cache */
	if(tjEncodeYUV2(handle, srcbuf, w, 0, h, pf, dstbuf, subsamp, flags)==-1)
		_throwtj("executing tjEncodeYUV2()");

	/* Benchmark */
	for(i=0, start=gettime(); (elapsed=gettime()-start)<benchtime; i++)
	{
		if(tjEncodeYUV2(handle, srcbuf, w, 0, h, pf, dstbuf, subsamp, flags)==-1)
			_throwtj("executing tjEncodeYUV2()");
	}

	if(tjDestroy(handle)==-1) _throwtj("executing tjDestroy()");
	handle=NULL;

	if(quiet==1) printf("%-4d  %-4d\t", w, h);
	if(quiet)
	{
		printf("%s%c%s%c",
			sigfig((double)(w*h)/1000000.*(double)i/elapsed, 4, tempstr, 1024),
			quiet==2? '\n':'\t',
			sigfig((double)(w*h*ps)/(double)yuvsize, 4, tempstr2, 80),
			quiet==2? '\n':'\t');
	}
	else
	{
		printf("\n%s size: %d x %d\n", "Image", w, h);
		printf("C--> Frame rate:           %f fps\n", (double)i/elapsed);
		printf("     Output image size:    %d bytes\n", yuvsize);
		printf("     Compression ratio:    %f:1\n",
			(double)(w*h*ps)/(double)yuvsize);
		printf("     Source throughput:    %f Megapixels/sec\n",
			(double)(w*h)/1000000.*(double)i/elapsed);
		printf("     Output bit stream:    %f Megabits/sec\n",
			(double)yuvsize*8./1000000.*(double)i/elapsed);
	}
	snprintf(tempstr, 1024, "%s_%s.yuv", filename, subName[subsamp]);
	if((file=fopen(tempstr, "wb"))==NULL)
		_throwunix("opening reference image");
	if(fwrite(dstbuf, yuvsize, 1, file)!=1)
		_throwunix("writing reference image");
	fclose(file);  file=NULL;
	if(!quiet) printf("Reference image written to %s\n", tempstr);

	bailout:
	if(file) {fclose(file);  file=NULL;}
	if(dstbuf) {free(dstbuf);  dstbuf=NULL;}
	if(handle) {tjDestroy(handle);  handle=NULL;}
	return;
}