bool WriteJpeg( const char * destinationFile, const unsigned char * rgbxBuffer, int width, int height )
{
tjhandle tj = tjInitCompress();
unsigned char * jpegBuf = NULL;
unsigned long jpegSize = 0;
const int r = tjCompress2( tj, ( unsigned char * )rgbxBuffer, // TJ isn't const correct...
width, width * 4, height, TJPF_RGBX, &jpegBuf,
&jpegSize, TJSAMP_444 /* TJSAMP_422 */, 90 /* jpegQual */, 0 /* flags */ );
if ( r != 0 )
{
LOG_TJ( "tjCompress2 returned %s for %s", tjGetErrorStr(), destinationFile );
return false;
}
FILE * f = fopen( destinationFile, "wb" );
if ( f != NULL )
{
fwrite( jpegBuf, jpegSize, 1, f );
fclose( f );
}
else
{
LOG_TJ( "WriteJpeg failed to write to %s", destinationFile );
return false;
}
tjFree( jpegBuf );
tjDestroy( tj );
return true;
}
JNIEXPORT jint JNICALL Java_org_libjpegturbo_turbojpeg_TJCompressor_compress___3IIIIIII_3BIII
(JNIEnv *env, jobject obj, jintArray src, jint x, jint y, jint width,
jint stride, jint height, jint pf, jbyteArray dst, jint jpegSubsamp,
jint jpegQual, jint flags)
{
tjhandle handle=0;
unsigned long jpegSize=0;
jsize arraySize=0, actualStride;
unsigned char *srcBuf=NULL, *jpegBuf=NULL;
gethandle();
if(pf<0 || pf>=org_libjpegturbo_turbojpeg_TJ_NUMPF || width<1 || height<1
|| stride<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 compressing from an integer buffer.");
actualStride=(stride==0)? width:stride;
arraySize=(y+height-1)*actualStride + x+width;
if((*env)->GetArrayLength(env, src)<arraySize)
_throw("Source buffer is not large enough");
jpegSize=tjBufSize(width, height, jpegSubsamp);
if((*env)->GetArrayLength(env, dst)<(jsize)jpegSize)
_throw("Destination buffer is not large enough");
bailif0(srcBuf=(*env)->GetPrimitiveArrayCritical(env, src, 0));
bailif0(jpegBuf=(*env)->GetPrimitiveArrayCritical(env, dst, 0));
if(tjCompress2(handle, &srcBuf[(y*actualStride + x)*sizeof(int)], width,
stride*sizeof(jint), height, pf, &jpegBuf, &jpegSize, jpegSubsamp,
jpegQual, flags|TJFLAG_NOREALLOC)==-1)
{
(*env)->ReleasePrimitiveArrayCritical(env, dst, jpegBuf, 0);
(*env)->ReleasePrimitiveArrayCritical(env, src, srcBuf, 0);
jpegBuf=srcBuf=NULL;
_throw(tjGetErrorStr());
}
bailout:
if(jpegBuf) (*env)->ReleasePrimitiveArrayCritical(env, dst, jpegBuf, 0);
if(srcBuf) (*env)->ReleasePrimitiveArrayCritical(env, src, srcBuf, 0);
return (jint)jpegSize;
}
static Shared<Buffer> save_to_buffer(const LayoutT & layout, const Byte * input, int format, std::uint32_t quality)
{
std::size_t output_size = 0;
Byte * output_data = NULL; //!< Memory is allocated by tjCompress2 if _jpegSize == 0
tjhandle compressor = tjInitCompress();
tjCompress2(compressor, input, static_cast<int>(layout.size[WIDTH]), static_cast<int>(layout.stride[0]), static_cast<int>(layout.size[HEIGHT]), TJPF_RGBX, &output_data, &output_size, TJSAMP_444, quality, TJFLAG_FASTDCT);
tjDestroy(compressor);
if (output_data) {
return shared<ForeignBuffer<Byte, tjFree>>(output_data, output_size);
} else {
return nullptr;
}
}
JNIEXPORT jint JNICALL Java_org_libjpegturbo_turbojpeg_TJCompressor_compress___3BIIII_3BIII
(JNIEnv *env, jobject obj, jbyteArray src, jint width, jint pitch,
jint height, jint pf, jbyteArray dst, jint jpegSubsamp, jint jpegQual,
jint flags)
{
tjhandle handle=0;
unsigned long jpegSize=0; jsize arraySize=0;
unsigned char *srcBuf=NULL, *jpegBuf=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");
arraySize=(pitch==0)? width*tjPixelSize[pf]*height:pitch*height;
if((*env)->GetArrayLength(env, src)<arraySize)
_throw("Source buffer is not large enough");
jpegSize=tjBufSize(width, height, jpegSubsamp);
if((*env)->GetArrayLength(env, dst)<(jsize)jpegSize)
_throw("Destination buffer is not large enough");
bailif0(srcBuf=(*env)->GetPrimitiveArrayCritical(env, src, 0));
bailif0(jpegBuf=(*env)->GetPrimitiveArrayCritical(env, dst, 0));
if(tjCompress2(handle, srcBuf, width, pitch, height, pf, &jpegBuf,
&jpegSize, jpegSubsamp, jpegQual, flags|TJFLAG_NOREALLOC)==-1)
{
(*env)->ReleasePrimitiveArrayCritical(env, dst, jpegBuf, 0);
(*env)->ReleasePrimitiveArrayCritical(env, src, srcBuf, 0);
jpegBuf=srcBuf=NULL;
_throw(tjGetErrorStr());
}
bailout:
if(jpegBuf) (*env)->ReleasePrimitiveArrayCritical(env, dst, jpegBuf, 0);
if(srcBuf) (*env)->ReleasePrimitiveArrayCritical(env, src, srcBuf, 0);
return (jint)jpegSize;
}
static jint TJCompressor_compress
(JNIEnv *env, jobject obj, jarray src, jint srcElementSize, jint x, jint y,
jint width, jint pitch, jint height, jint pf, jbyteArray dst,
jint jpegSubsamp, jint jpegQual, jint flags)
{
tjhandle handle=0;
unsigned long jpegSize=0;
jsize arraySize=0, actualPitch;
unsigned char *srcBuf=NULL, *jpegBuf=NULL;
gethandle();
if(pf<0 || pf>=org_libjpegturbo_turbojpeg_TJ_NUMPF || width<1 || height<1
|| pitch<0)
_throwarg("Invalid argument in compress()");
if(org_libjpegturbo_turbojpeg_TJ_NUMPF!=TJ_NUMPF)
_throwarg("Mismatch between Java and C API");
actualPitch=(pitch==0)? width*tjPixelSize[pf]:pitch;
arraySize=(y+height-1)*actualPitch + (x+width)*tjPixelSize[pf];
if((*env)->GetArrayLength(env, src)*srcElementSize<arraySize)
_throwarg("Source buffer is not large enough");
jpegSize=tjBufSize(width, height, jpegSubsamp);
if((*env)->GetArrayLength(env, dst)<(jsize)jpegSize)
_throwarg("Destination buffer is not large enough");
bailif0(srcBuf=(*env)->GetPrimitiveArrayCritical(env, src, 0));
bailif0(jpegBuf=(*env)->GetPrimitiveArrayCritical(env, dst, 0));
if(ProcessSystemProperties(env)<0) goto bailout;
if(tjCompress2(handle, &srcBuf[y*actualPitch + x*tjPixelSize[pf]], width,
pitch, height, pf, &jpegBuf, &jpegSize, jpegSubsamp, jpegQual,
flags|TJFLAG_NOREALLOC)==-1)
_throwtj();
bailout:
if(jpegBuf) (*env)->ReleasePrimitiveArrayCritical(env, dst, jpegBuf, 0);
if(srcBuf) (*env)->ReleasePrimitiveArrayCritical(env, src, srcBuf, 0);
return (jint)jpegSize;
}
void WriteJpeg( const char * fullName, const unsigned char * rgbxBuffer, int width, int height )
{
tjhandle tj = tjInitCompress();
unsigned char * jpegBuf = NULL;
unsigned long jpegSize = 0;
const int r = tjCompress2( tj, ( unsigned char * )rgbxBuffer, // TJ isn't const correct...
width, width * 4, height, TJPF_RGBX, &jpegBuf,
&jpegSize, TJSAMP_444 /* TJSAMP_422 */, 90 /* jpegQual */, 0 /* flags */ );
if ( r != 0 )
{
LOG( "tjCompress2 returned %s for %s", tjGetErrorStr(), fullName );
return;
}
MemBuffer toFile( jpegBuf, jpegSize );
toFile.WriteToFile( fullName );
tjFree( jpegBuf );
tjDestroy( tj );
}
QByteArray ImageJpegCompressor::computeJpeg(const ImageWrapper& sourceImage,
const QRect& imageRegion)
{
// tjCompress API is incorrect and takes a non-const input buffer, even
// though it does not modify it. It can "safely" be cast to non-const
// pointer to comply to the incorrect API.
unsigned char* tjSrcBuffer = (unsigned char*)sourceImage.data;
tjSrcBuffer +=
imageRegion.y() * sourceImage.width * sourceImage.getBytesPerPixel();
tjSrcBuffer += imageRegion.x() * sourceImage.getBytesPerPixel();
const int tjWidth = imageRegion.width();
// assume imageBuffer isn't padded
const int tjPitch = sourceImage.width * sourceImage.getBytesPerPixel();
const int tjHeight = imageRegion.height();
const int tjPixelFormat = getTurboJpegFormat(sourceImage.pixelFormat);
unsigned char* tjJpegBuf = 0;
unsigned long tjJpegSize = 0;
const int tjJpegSubsamp = TJSAMP_444;
const int tjJpegQual = sourceImage.compressionQuality;
const int tjFlags = 0; // or: TJFLAG_BOTTOMUP
int err = tjCompress2(_tjHandle, tjSrcBuffer, tjWidth, tjPitch, tjHeight,
tjPixelFormat, &tjJpegBuf, &tjJpegSize, tjJpegSubsamp,
tjJpegQual, tjFlags);
if (err != 0)
{
std::cerr << "libjpeg-turbo image conversion failure" << std::endl;
return QByteArray();
}
// move the JPEG buffer to a byte array
const QByteArray jpegData((char*)tjJpegBuf, tjJpegSize);
// free the libjpeg-turbo allocated memory
tjFree(tjJpegBuf);
return jpegData;
}
void BEJPEG::compress ( void )
{
tjhandle jpeg_compressor = tjInitCompress();
if ( NULL != jpeg_compressor ) {
unsigned long image_size = width * height * tjPixelSize[pixel_format];
std::vector<unsigned char> image ( image_size );
unsigned char * compressed_image = &image[0];
int error = tjCompress2 ( jpeg_compressor, &data[0], width, 0, height, pixel_format, &compressed_image, &image_size, chrominance_subsampling, compression_level, 0 );
tjDestroy ( jpeg_compressor ); // error =
if ( 0 == error ) {
image.resize ( image_size );
data = image;
} else {
throw BEPlugin_Exception ( kJPEGCompressionError, tjGetErrorStr() );
}
} else {
throw BEPlugin_Exception ( kJPEGInitCcompressorError, tjGetErrorStr() );
}
}
{
#ifdef LIVRE_USE_LIBJPEGTURBO
uint8_t* tjSrcBuffer = const_cast< uint8_t* >(rawData);
const int32_t pixelFormat = TJPF_BGRA;
const int32_t color_components = 4; // Color Depth
const int32_t tjPitch = width * color_components;
const int32_t tjPixelFormat = pixelFormat;
uint8_t* tjJpegBuf = 0;
const int32_t tjJpegSubsamp = TJSAMP_444;
const int32_t tjJpegQual = 100; // Image Quality
const int32_t tjFlags = TJXOP_ROT180;
const int32_t success =
tjCompress2( _compressor, tjSrcBuffer, width, tjPitch, height,
tjPixelFormat, &tjJpegBuf, &dataSize, tjJpegSubsamp,
tjJpegQual, tjFlags);
if(success != 0)
{
LBERROR << "libjpeg-turbo image conversion failure" << std::endl;
return 0;
}
return static_cast<uint8_t *>(tjJpegBuf);
#else
if( !_compressor ) // just to silence unused private field warning
return nullptr;
return nullptr;
#endif
}
void dotest(unsigned char *srcbuf, int w, int h, int subsamp, int jpegqual,
char *filename)
{
char tempstr[1024], tempstr2[80];
FILE *file=NULL; tjhandle handle=NULL;
unsigned char **jpegbuf=NULL, *tmpbuf=NULL, *srcptr, *srcptr2;
double start, elapsed;
int totaljpegsize=0, row, col, i, tilew=w, tileh=h, retval=0;
unsigned long *jpegsize=NULL;
int ps=tjPixelSize[pf], ntilesw=1, ntilesh=1, pitch=w*ps;
if(yuv==YUVENCODE) {dotestyuv(srcbuf, w, h, subsamp, filename); return;}
if((tmpbuf=(unsigned char *)malloc(pitch*h)) == NULL)
_throwunix("allocating temporary image buffer");
if(!quiet)
printf(">>>>> %s (%s) <--> JPEG %s Q%d <<<<<\n", pixFormatStr[pf],
(flags&TJFLAG_BOTTOMUP)? "Bottom-up":"Top-down", subNameLong[subsamp],
jpegqual);
for(tilew=dotile? 8:w, tileh=dotile? 8:h; ; tilew*=2, tileh*=2)
{
if(tilew>w) tilew=w; if(tileh>h) tileh=h;
ntilesw=(w+tilew-1)/tilew; ntilesh=(h+tileh-1)/tileh;
if((jpegbuf=(unsigned char **)malloc(sizeof(unsigned char *)
*ntilesw*ntilesh))==NULL)
_throwunix("allocating JPEG tile array");
memset(jpegbuf, 0, sizeof(unsigned char *)*ntilesw*ntilesh);
if((jpegsize=(unsigned long *)malloc(sizeof(unsigned long)
*ntilesw*ntilesh))==NULL)
_throwunix("allocating JPEG size array");
memset(jpegsize, 0, sizeof(unsigned long)*ntilesw*ntilesh);
if((flags&TJFLAG_NOREALLOC)!=0)
for(i=0; i<ntilesw*ntilesh; i++)
{
if((jpegbuf[i]=(unsigned char *)malloc(tjBufSize(tilew, tileh,
subsamp)))==NULL)
_throwunix("allocating JPEG tiles");
}
/* Compression test */
if(quiet==1)
printf("%s\t%s\t%s\t%d\t", pixFormatStr[pf],
(flags&TJFLAG_BOTTOMUP)? "BU":"TD", subNameLong[subsamp], jpegqual);
for(i=0; i<h; i++)
memcpy(&tmpbuf[pitch*i], &srcbuf[w*ps*i], w*ps);
if((handle=tjInitCompress())==NULL)
_throwtj("executing tjInitCompress()");
/* Execute once to preload cache */
if(tjCompress2(handle, srcbuf, tilew, pitch, tileh, pf, &jpegbuf[0],
&jpegsize[0], subsamp, jpegqual, flags)==-1)
_throwtj("executing tjCompress2()");
/* Benchmark */
for(i=0, start=gettime(); (elapsed=gettime()-start)<benchtime; i++)
{
int tile=0;
totaljpegsize=0;
for(row=0, srcptr=srcbuf; row<ntilesh; row++, srcptr+=pitch*tileh)
{
for(col=0, srcptr2=srcptr; col<ntilesw; col++, tile++,
srcptr2+=ps*tilew)
{
int width=min(tilew, w-col*tilew);
int height=min(tileh, h-row*tileh);
if(tjCompress2(handle, srcptr2, width, pitch, height, pf,
&jpegbuf[tile], &jpegsize[tile], subsamp, jpegqual, flags)==-1)
_throwtj("executing tjCompress()2");
totaljpegsize+=jpegsize[tile];
}
}
}
if(tjDestroy(handle)==-1) _throwtj("executing tjDestroy()");
handle=NULL;
if(quiet==1) printf("%-4d %-4d\t", tilew, tileh);
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)totaljpegsize, 4, tempstr2, 80),
quiet==2? '\n':'\t');
}
else
{
printf("\n%s size: %d x %d\n", dotile? "Tile":"Image", tilew,
tileh);
printf("C--> Frame rate: %f fps\n", (double)i/elapsed);
printf(" Output image size: %d bytes\n", totaljpegsize);
printf(" Compression ratio: %f:1\n",
(double)(w*h*ps)/(double)totaljpegsize);
printf(" Source throughput: %f Megapixels/sec\n",
(double)(w*h)/1000000.*(double)i/elapsed);
printf(" Output bit stream: %f Megabits/sec\n",
(double)totaljpegsize*8./1000000.*(double)i/elapsed);
}
if(tilew==w && tileh==h)
{
snprintf(tempstr, 1024, "%s_%s_Q%d.jpg", filename, subName[subsamp],
jpegqual);
if((file=fopen(tempstr, "wb"))==NULL)
_throwunix("opening reference image");
if(fwrite(jpegbuf[0], jpegsize[0], 1, file)!=1)
_throwunix("writing reference image");
fclose(file); file=NULL;
if(!quiet) printf("Reference image written to %s\n", tempstr);
}
/* Decompression test */
if(decomptest(srcbuf, jpegbuf, jpegsize, tmpbuf, w, h, subsamp, jpegqual,
filename, tilew, tileh)==-1)
goto bailout;
for(i=0; i<ntilesw*ntilesh; i++)
{
if(jpegbuf[i]) free(jpegbuf[i]); jpegbuf[i]=NULL;
}
free(jpegbuf); jpegbuf=NULL;
free(jpegsize); jpegsize=NULL;
if(tilew==w && tileh==h) break;
}
bailout:
if(file) {fclose(file); file=NULL;}
if(jpegbuf)
{
for(i=0; i<ntilesw*ntilesh; i++)
{
if(jpegbuf[i]) free(jpegbuf[i]); jpegbuf[i]=NULL;
}
free(jpegbuf); jpegbuf=NULL;
}
if(jpegsize) {free(jpegsize); jpegsize=NULL;}
if(tmpbuf) {free(tmpbuf); tmpbuf=NULL;}
if(handle) {tjDestroy(handle); handle=NULL;}
return;
}
int fullTest(unsigned char *srcbuf, int w, int h, int subsamp, int jpegqual,
char *filename)
{
char tempstr[1024], tempstr2[80];
FILE *file=NULL; tjhandle handle=NULL;
unsigned char **jpegbuf=NULL, *yuvbuf=NULL, *tmpbuf=NULL, *srcptr, *srcptr2;
double start, elapsed, elapsedEncode;
int totaljpegsize=0, row, col, i, tilew=w, tileh=h, retval=0;
int iter, yuvsize=0;
unsigned long *jpegsize=NULL;
int ps=tjPixelSize[pf];
int ntilesw=1, ntilesh=1, pitch=w*ps;
const char *pfStr=pixFormatStr[pf];
if((tmpbuf=(unsigned char *)malloc(pitch*h)) == NULL)
_throwunix("allocating temporary image buffer");
if(!quiet)
printf(">>>>> %s (%s) <--> JPEG %s Q%d <<<<<\n", pfStr,
(flags&TJFLAG_BOTTOMUP)? "Bottom-up":"Top-down", subNameLong[subsamp],
jpegqual);
for(tilew=dotile? 8:w, tileh=dotile? 8:h; ; tilew*=2, tileh*=2)
{
if(tilew>w) tilew=w; if(tileh>h) tileh=h;
ntilesw=(w+tilew-1)/tilew; ntilesh=(h+tileh-1)/tileh;
if((jpegbuf=(unsigned char **)malloc(sizeof(unsigned char *)
*ntilesw*ntilesh))==NULL)
_throwunix("allocating JPEG tile array");
memset(jpegbuf, 0, sizeof(unsigned char *)*ntilesw*ntilesh);
if((jpegsize=(unsigned long *)malloc(sizeof(unsigned long)
*ntilesw*ntilesh))==NULL)
_throwunix("allocating JPEG size array");
memset(jpegsize, 0, sizeof(unsigned long)*ntilesw*ntilesh);
if((flags&TJFLAG_NOREALLOC)!=0)
for(i=0; i<ntilesw*ntilesh; i++)
{
if((jpegbuf[i]=(unsigned char *)tjAlloc(tjBufSize(tilew, tileh,
subsamp)))==NULL)
_throwunix("allocating JPEG tiles");
}
/* Compression test */
if(quiet==1)
printf("%-4s (%s) %-5s %-3d ", pfStr,
(flags&TJFLAG_BOTTOMUP)? "BU":"TD", subNameLong[subsamp], jpegqual);
for(i=0; i<h; i++)
memcpy(&tmpbuf[pitch*i], &srcbuf[w*ps*i], w*ps);
if((handle=tjInitCompress())==NULL)
_throwtj("executing tjInitCompress()");
if(doyuv)
{
yuvsize=tjBufSizeYUV2(tilew, yuvpad, tileh, subsamp);
if((yuvbuf=(unsigned char *)malloc(yuvsize))==NULL)
_throwunix("allocating YUV buffer");
memset(yuvbuf, 127, yuvsize);
}
/* Benchmark */
iter=-warmup;
elapsed=elapsedEncode=0.;
while(1)
{
int tile=0;
totaljpegsize=0;
start=gettime();
for(row=0, srcptr=srcbuf; row<ntilesh; row++, srcptr+=pitch*tileh)
{
for(col=0, srcptr2=srcptr; col<ntilesw; col++, tile++,
srcptr2+=ps*tilew)
{
int width=min(tilew, w-col*tilew);
int height=min(tileh, h-row*tileh);
if(doyuv)
{
double startEncode=gettime();
if(tjEncodeYUV3(handle, srcptr2, width, pitch, height, pf, yuvbuf,
yuvpad, subsamp, flags)==-1)
_throwtj("executing tjEncodeYUV3()");
if(iter>=0) elapsedEncode+=gettime()-startEncode;
if(tjCompressFromYUV(handle, yuvbuf, width, yuvpad, height,
subsamp, &jpegbuf[tile], &jpegsize[tile], jpegqual, flags)==-1)
_throwtj("executing tjCompressFromYUV()");
}
else
{
if(tjCompress2(handle, srcptr2, width, pitch, height, pf,
&jpegbuf[tile], &jpegsize[tile], subsamp, jpegqual, flags)==-1)
_throwtj("executing tjCompress2()");
}
totaljpegsize+=jpegsize[tile];
}
}
iter++;
if(iter>=1)
{
elapsed+=gettime()-start;
if(elapsed>=benchtime) break;
}
}
if(doyuv) elapsed-=elapsedEncode;
if(tjDestroy(handle)==-1) _throwtj("executing tjDestroy()");
handle=NULL;
if(quiet==1) printf("%-5d %-5d ", tilew, tileh);
if(quiet)
{
if(doyuv)
printf("%-6s%s",
sigfig((double)(w*h)/1000000.*(double)iter/elapsedEncode, 4, tempstr,
1024), quiet==2? "\n":" ");
printf("%-6s%s",
sigfig((double)(w*h)/1000000.*(double)iter/elapsed, 4, tempstr, 1024),
quiet==2? "\n":" ");
printf("%-6s%s",
sigfig((double)(w*h*ps)/(double)totaljpegsize, 4, tempstr2, 80),
quiet==2? "\n":" ");
}
else
{
printf("\n%s size: %d x %d\n", dotile? "Tile":"Image", tilew,
tileh);
if(doyuv)
{
printf("Encode YUV --> Frame rate: %f fps\n",
(double)iter/elapsedEncode);
printf(" Output image size: %d bytes\n", yuvsize);
printf(" Compression ratio: %f:1\n",
(double)(w*h*ps)/(double)yuvsize);
printf(" Throughput: %f Megapixels/sec\n",
(double)(w*h)/1000000.*(double)iter/elapsedEncode);
printf(" Output bit stream: %f Megabits/sec\n",
(double)yuvsize*8./1000000.*(double)iter/elapsedEncode);
}
printf("%s --> Frame rate: %f fps\n",
doyuv? "Comp from YUV":"Compress ", (double)iter/elapsed);
printf(" Output image size: %d bytes\n",
totaljpegsize);
printf(" Compression ratio: %f:1\n",
(double)(w*h*ps)/(double)totaljpegsize);
printf(" Throughput: %f Megapixels/sec\n",
(double)(w*h)/1000000.*(double)iter/elapsed);
printf(" Output bit stream: %f Megabits/sec\n",
(double)totaljpegsize*8./1000000.*(double)iter/elapsed);
}
if(tilew==w && tileh==h)
{
snprintf(tempstr, 1024, "%s_%s_Q%d.jpg", filename, subName[subsamp],
jpegqual);
if((file=fopen(tempstr, "wb"))==NULL)
_throwunix("opening reference image");
if(fwrite(jpegbuf[0], jpegsize[0], 1, file)!=1)
_throwunix("writing reference image");
fclose(file); file=NULL;
if(!quiet) printf("Reference image written to %s\n", tempstr);
}
/* Decompression test */
if(!componly)
{
if(decomp(srcbuf, jpegbuf, jpegsize, tmpbuf, w, h, subsamp, jpegqual,
filename, tilew, tileh)==-1)
goto bailout;
}
for(i=0; i<ntilesw*ntilesh; i++)
{
if(jpegbuf[i]) tjFree(jpegbuf[i]); jpegbuf[i]=NULL;
}
free(jpegbuf); jpegbuf=NULL;
free(jpegsize); jpegsize=NULL;
if(doyuv)
{
free(yuvbuf); yuvbuf=NULL;
}
if(tilew==w && tileh==h) break;
}
bailout:
if(file) {fclose(file); file=NULL;}
if(jpegbuf)
{
for(i=0; i<ntilesw*ntilesh; i++)
{
if(jpegbuf[i]) tjFree(jpegbuf[i]); jpegbuf[i]=NULL;
}
free(jpegbuf); jpegbuf=NULL;
}
if(yuvbuf) {free(yuvbuf); yuvbuf=NULL;}
if(jpegsize) {free(jpegsize); jpegsize=NULL;}
if(tmpbuf) {free(tmpbuf); tmpbuf=NULL;}
if(handle) {tjDestroy(handle); handle=NULL;}
return retval;
}
