Updates libjpeg-turbo to 1.1.90 (r677)

third_party/libjpeg_turbo/tjbench.c

+/*
+ * Copyright (C)2009-2011 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:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ *   this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ * - Neither the name of the libjpeg-turbo Project nor the names of its
+ *   contributors may be used to endorse or promote products derived from this
+ *   software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS",
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include <errno.h>
+#include <cdjpeg.h>
+#include "./bmp.h"
+#include "./tjutil.h"
+#include "./turbojpeg.h"
+
+
+#define _throw(op, err) {  \
+        printf("ERROR in line %d while %s:\n%s\n", __LINE__, op, err);  \
+  retval=-1;  goto bailout;}
+#define _throwunix(m) _throw(m, strerror(errno))
+#define _throwtj(m) _throw(m, tjGetErrorStr())
+#define _throwbmp(m) _throw(m, bmpgeterr())
+
+enum {YUVENCODE=1, YUVDECODE};
+int flags=TJFLAG_NOREALLOC, decomponly=0, yuv=0, quiet=0, dotile=0,
+        pf=TJPF_BGR;
+char *ext="ppm";
+const char *pixFormatStr[TJ_NUMPF]=
+{
+        "RGB", "BGR", "RGBX", "BGRX", "XBGR", "XRGB", "GRAY"
+};
+const char *subNameLong[TJ_NUMSAMP]=
+{
+        "4:4:4", "4:2:2", "4:2:0", "GRAY", "4:4:0"
+};
+const char *subName[NUMSUBOPT]={"444", "422", "420", "GRAY", "440"};
+tjscalingfactor *scalingfactors=NULL, sf={1, 1};  int nsf=0;
+int xformop=TJXOP_NONE, xformopt=0;
+double benchtime=5.0;
+
+
+char *sigfig(double val, int figs, char *buf, int len)
+{
+        char format[80];
+        int digitsafterdecimal=figs-(int)ceil(log10(fabs(val)));
+        if(digitsafterdecimal<1) snprintf(format, 80, "%%.0f");
+        else snprintf(format, 80, "%%.%df", digitsafterdecimal);
+        snprintf(buf, len, format, val);
+        return buf;
+}
+
+
+/* Decompression test */
+int decomptest(unsigned char *srcbuf, unsigned char **jpegbuf,
+        unsigned long *jpegsize, unsigned char *dstbuf, int w, int h,
+        int subsamp, int jpegqual, char *filename, int tilew, int tileh)
+{
+        char tempstr[1024], sizestr[20]="\0", qualstr[6]="\0", *ptr;
+        FILE *file=NULL;  tjhandle handle=NULL;
+        int row, col, i, dstbufalloc=0, retval=0;
+        double start, elapsed;
+        int ps=tjPixelSize[pf];
+        int yuvsize=tjBufSizeYUV(w, h, subsamp), bufsize;
+        int scaledw=(yuv==YUVDECODE)? w : TJSCALED(w, sf);
+        int scaledh=(yuv==YUVDECODE)? h : TJSCALED(h, sf);
+        int pitch=scaledw*ps;
+        int ntilesw=(w+tilew-1)/tilew, ntilesh=(h+tileh-1)/tileh;
+        unsigned char *dstptr, *dstptr2;
+
+        if(jpegqual>0)
+        {
+                snprintf(qualstr, 6, "_Q%d", jpegqual);
+                qualstr[5]=0;
+        }
+
+        if((handle=tjInitDecompress())==NULL)
+                _throwtj("executing tjInitDecompress()");
+
+        bufsize=(yuv==YUVDECODE? yuvsize:pitch*h);
+        if(dstbuf==NULL)
+        {
+                if((dstbuf=(unsigned char *)malloc(bufsize)) == NULL)
+                        _throwunix("allocating image buffer");
+                dstbufalloc=1;
+        }
+        /* Set the destination buffer to gray so we know whether the decompressor
+           attempted to write to it */
+        memset(dstbuf, 127, bufsize);
+
+        /* Execute once to preload cache */
+        if(yuv==YUVDECODE)
+        {
+                if(tjDecompressToYUV(handle, jpegbuf[0], jpegsize[0], dstbuf, flags)==-1)
+                        _throwtj("executing tjDecompressToYUV()");
+        }
+        else if(tjDecompress2(handle, jpegbuf[0], jpegsize[0], dstbuf, scaledw,
+                pitch, scaledh, pf, flags)==-1)
+                _throwtj("executing tjDecompress2()");
+
+        /* Benchmark */
+        for(i=0, start=gettime(); (elapsed=gettime()-start)<benchtime; i++)
+        {
+                int tile=0;
+                if(yuv==YUVDECODE)
+                {
+                        if(tjDecompressToYUV(handle, jpegbuf[0], jpegsize[0], dstbuf, flags)==-1)
+                        _throwtj("executing tjDecompressToYUV()");
+                }
+                else for(row=0, dstptr=dstbuf; row<ntilesh; row++, dstptr+=pitch*tileh)
+                {
+                        for(col=0, dstptr2=dstptr; col<ntilesw; col++, tile++, dstptr2+=ps*tilew)
+                        {
+                                int width=dotile? min(tilew, w-col*tilew):scaledw;
+                                int height=dotile? min(tileh, h-row*tileh):scaledh;
+                                if(tjDecompress2(handle, jpegbuf[tile], jpegsize[tile], dstptr2, width,
+                                        pitch, height, pf, flags)==-1)
+                                        _throwtj("executing tjDecompress2()");
+                        }
+                }
+        }
+
+        if(tjDestroy(handle)==-1) _throwtj("executing tjDestroy()");
+        handle=NULL;
+
+        if(quiet)
+        {
+                printf("%s\n",
+                        sigfig((double)(w*h)/1000000.*(double)i/elapsed, 4, tempstr, 1024));
+        }
+        else
+        {
+                printf("D--> Frame rate:           %f fps\n", (double)i/elapsed);
+                printf("     Dest. throughput:     %f Megapixels/sec\n",
+                        (double)(w*h)/1000000.*(double)i/elapsed);
+        }
+        if(yuv==YUVDECODE)
+        {
+                snprintf(tempstr, 1024, "%s_%s%s.yuv", filename, subName[subsamp],
+                        qualstr);
+                if((file=fopen(tempstr, "wb"))==NULL)
+                        _throwunix("opening YUV image for output");
+                if(fwrite(dstbuf, yuvsize, 1, file)!=1)
+                        _throwunix("writing YUV image");
+                fclose(file);  file=NULL;
+        }
+        else
+        {
+                if(sf.num!=1 || sf.denom!=1)
+                        snprintf(sizestr, 20, "%d_%d", sf.num, sf.denom);
+                else if(tilew!=w || tileh!=h)
+                        snprintf(sizestr, 20, "%dx%d", tilew, tileh);
+                else snprintf(sizestr, 20, "full");
+                if(decomponly)
+                        snprintf(tempstr, 1024, "%s_%s.%s", filename, sizestr, ext);
+                else
+                        snprintf(tempstr, 1024, "%s_%s%s_%s.%s", filename, subName[subsamp],
+                                qualstr, sizestr, ext);
+                if(savebmp(tempstr, dstbuf, scaledw, scaledh, pf,
+                        (flags&TJFLAG_BOTTOMUP)!=0)==-1)
+                        _throwbmp("saving bitmap");
+                ptr=strrchr(tempstr, '.');
+                snprintf(ptr, 1024-(ptr-tempstr), "-err.%s", ext);
+                if(srcbuf && sf.num==1 && sf.denom==1)
+                {
+                        if(!quiet) printf("Compression error written to %s.\n", tempstr);
+                        if(subsamp==TJ_GRAYSCALE)
+                        {
+                                int index, index2;
+                                for(row=0, index=0; row<h; row++, index+=pitch)
+                                {
+                                        for(col=0, index2=index; col<w; col++, index2+=ps)
+                                        {
+                                                int rindex=index2+tjRedOffset[pf];
+                                                int gindex=index2+tjGreenOffset[pf];
+                                                int bindex=index2+tjBlueOffset[pf];
+                                                int y=(int)((double)srcbuf[rindex]*0.299
+                                                        + (double)srcbuf[gindex]*0.587
+                                                        + (double)srcbuf[bindex]*0.114 + 0.5);
+                                                if(y>255) y=255;  if(y<0) y=0;
+                                                dstbuf[rindex]=abs(dstbuf[rindex]-y);
+                                                dstbuf[gindex]=abs(dstbuf[gindex]-y);
+                                                dstbuf[bindex]=abs(dstbuf[bindex]-y);
+                                        }
+                                }
+                        }               
+                        else
+                        {
+                                for(row=0; row<h; row++)
+                                        for(col=0; col<w*ps; col++)
+                                                dstbuf[pitch*row+col]
+                                                        =abs(dstbuf[pitch*row+col]-srcbuf[pitch*row+col]);
+                        }
+                        if(savebmp(tempstr, dstbuf, w, h, pf,
+                                (flags&TJFLAG_BOTTOMUP)!=0)==-1)
+                                _throwbmp("saving bitmap");
+                }
+        }
+
+        bailout:
+        if(file) {fclose(file);  file=NULL;}
+        if(handle) {tjDestroy(handle);  handle=NULL;}
+        if(dstbuf && dstbufalloc) {free(dstbuf);  dstbuf=NULL;}
+        return retval;
+}
+
+
+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;
+}
+
+
+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;
+}
+
+
+void dodecomptest(char *filename)
+{
+        FILE *file=NULL;  tjhandle handle=NULL;
+        unsigned char **jpegbuf=NULL, *srcbuf=NULL;
+        unsigned long *jpegsize=NULL, srcsize, totaljpegsize;
+        tjtransform *t=NULL;
+        int w=0, h=0, subsamp=-1, _w, _h, _tilew, _tileh,
+                _ntilesw, _ntilesh, _subsamp;
+        char *temp=NULL, tempstr[80], tempstr2[80];
+        int row, col, i, tilew, tileh, ntilesw, ntilesh, retval=0;
+        double start, elapsed;
+        int ps=tjPixelSize[pf], tile;
+
+        if((file=fopen(filename, "rb"))==NULL)
+                _throwunix("opening file");
+        if(fseek(file, 0, SEEK_END)<0 || (srcsize=ftell(file))<0)
+                _throwunix("determining file size");
+        if((srcbuf=(unsigned char *)malloc(srcsize))==NULL)
+                _throwunix("allocating memory");
+        if(fseek(file, 0, SEEK_SET)<0)
+                _throwunix("setting file position");
+        if(fread(srcbuf, srcsize, 1, file)<1)
+                _throwunix("reading JPEG data");
+        fclose(file);  file=NULL;
+
+        temp=strrchr(filename, '.');
+        if(temp!=NULL) *temp='\0';
+
+        if((handle=tjInitTransform())==NULL)
+                _throwtj("executing tjInitTransform()");
+        if(tjDecompressHeader2(handle, srcbuf, srcsize, &w, &h, &subsamp)==-1)
+                _throwtj("executing tjDecompressHeader2()");
+
+        if(quiet==1)
+        {
+                printf("All performance values in Mpixels/sec\n\n");
+                printf("Bitmap\tBitmap\tJPEG\t%s %s \tXform\tComp\tDecomp\n",
+                        dotile? "Tile ":"Image", dotile? "Tile ":"Image");
+                printf("Format\tOrder\tSubsamp\tWidth Height\tPerf \tRatio\tPerf\n\n");
+        }
+        else if(!quiet)
+        {
+                printf(">>>>>  JPEG %s --> %s (%s)  <<<<<\n", subNameLong[subsamp],
+                        pixFormatStr[pf], (flags&TJFLAG_BOTTOMUP)? "Bottom-up":"Top-down");
+        }
+
+        for(tilew=dotile? 16:w, tileh=dotile? 16: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");
+                        }
+
+                _w=w;  _h=h;  _tilew=tilew;  _tileh=tileh;
+                if(!quiet)
+                {
+                        printf("\n%s size: %d x %d", dotile? "Tile":"Image", _tilew,
+                                _tileh);
+                        if(sf.num!=1 || sf.denom!=1)
+                                printf(" --> %d x %d", TJSCALED(_w, sf), TJSCALED(_h, sf));
+                        printf("\n");
+                }
+                else if(quiet==1)
+                {
+                        printf("%s\t%s\t%s\t", pixFormatStr[pf],
+                                (flags&TJFLAG_BOTTOMUP)? "BU":"TD", subNameLong[subsamp]);
+                        printf("%-4d  %-4d\t", tilew, tileh);
+                }
+
+                _subsamp=subsamp;
+                if(dotile || xformop!=TJXOP_NONE || xformopt!=0)
+                {
+                        if((t=(tjtransform *)malloc(sizeof(tjtransform)*ntilesw*ntilesh))
+                                ==NULL)
+                                _throwunix("allocating image transform array");
+
+                        if(xformop==TJXOP_TRANSPOSE || xformop==TJXOP_TRANSVERSE
+                                || xformop==TJXOP_ROT90 || xformop==TJXOP_ROT270)
+                        {
+                                _w=h;  _h=w;  _tilew=tileh;  _tileh=tilew;
+                        }
+
+                        if(xformopt&TJXOPT_GRAY) _subsamp=TJ_GRAYSCALE;
+                        if(xformop==TJXOP_HFLIP || xformop==TJXOP_ROT180)
+                                _w=_w-(_w%tjMCUWidth[_subsamp]);
+                        if(xformop==TJXOP_VFLIP || xformop==TJXOP_ROT180)
+                                _h=_h-(_h%tjMCUHeight[_subsamp]);
+                        if(xformop==TJXOP_TRANSVERSE || xformop==TJXOP_ROT90)
+                                _w=_w-(_w%tjMCUHeight[_subsamp]);
+                        if(xformop==TJXOP_TRANSVERSE || xformop==TJXOP_ROT270)
+                                _h=_h-(_h%tjMCUWidth[_subsamp]);
+                        _ntilesw=(_w+_tilew-1)/_tilew;
+                        _ntilesh=(_h+_tileh-1)/_tileh;
+
+                        for(row=0, tile=0; row<_ntilesh; row++)
+                        {
+                                for(col=0; col<_ntilesw; col++, tile++)
+                                {
+                                        t[tile].r.w=min(_tilew, _w-col*_tilew);
+                                        t[tile].r.h=min(_tileh, _h-row*_tileh);
+                                        t[tile].r.x=col*_tilew;
+                                        t[tile].r.y=row*_tileh;
+                                        t[tile].op=xformop;
+                                        t[tile].options=xformopt|TJXOPT_TRIM;
+                                }
+                        }
+
+                        start=gettime();
+                        if(tjTransform(handle, srcbuf, srcsize, _ntilesw*_ntilesh, jpegbuf,
+                                jpegsize, t, flags)==-1)
+                                _throwtj("executing tjTransform()");
+                        elapsed=gettime()-start;
+
+                        free(t);  t=NULL;
+
+                        for(tile=0, totaljpegsize=0; tile<_ntilesw*_ntilesh; tile++)
+                                totaljpegsize+=jpegsize[tile];
+
+                        if(quiet)
+                        {
+                                printf("%s%c%s%c",
+                                        sigfig((double)(w*h)/1000000./elapsed, 4, tempstr, 80),
+                                        quiet==2? '\n':'\t',
+                                        sigfig((double)(w*h*ps)/(double)totaljpegsize, 4, tempstr2, 80),
+                                        quiet==2? '\n':'\t');
+                        }
+                        else if(!quiet)
+                        {
+                                printf("X--> Frame rate:           %f fps\n", 1.0/elapsed);
+                                printf("     Output image size:    %lu 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./elapsed);
+                                printf("     Output bit stream:    %f Megabits/sec\n",
+                                        (double)totaljpegsize*8./1000000./elapsed);
+                        }
+                }
+                else
+                {
+                        if(quiet==1) printf("N/A\tN/A\t");
+                        jpegsize[0]=srcsize;
+                        memcpy(jpegbuf[0], srcbuf, srcsize);
+                }
+
+                if(w==tilew) _tilew=_w;
+                if(h==tileh) _tileh=_h;
+                if(decomptest(NULL, jpegbuf, jpegsize, NULL, _w, _h, _subsamp, 0,
+                        filename, _tilew, _tileh)==-1)
+                        goto bailout;
+
+                for(i=0; i<ntilesw*ntilesh; i++)
+                {
+                        free(jpegbuf[i]);  jpegbuf[i]=NULL;
+                }
+                free(jpegbuf);  jpegbuf=NULL;
+                if(jpegsize) {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(srcbuf) {free(srcbuf);  srcbuf=NULL;}
+        if(t) {free(t);  t=NULL;}
+        if(handle) {tjDestroy(handle);  handle=NULL;}
+        return;
+}
+
+
+void usage(char *progname)
+{
+        int i;
+        printf("USAGE: %s\n", progname);
+        printf("       <Inputfile (BMP|PPM)> <%% Quality> [options]\n\n");
+        printf("       %s\n", progname);
+        printf("       <Inputfile (JPG)> [options]\n\n");
+        printf("Options:\n\n");
+        printf("-alloc = Dynamically allocate JPEG image buffers\n");
+        printf("-bmp = Generate output images in Windows Bitmap format (default=PPM)\n");
+        printf("-bottomup = Test bottom-up compression/decompression\n");
+        printf("-tile = Test performance of the codec when the image is encoded as separate\n");
+        printf("     tiles of varying sizes.\n");
+        printf("-forcemmx, -forcesse, -forcesse2, -forcesse3 =\n");
+        printf("     Force MMX, SSE, SSE2, or SSE3 code paths in the underlying codec\n");
+        printf("-rgb, -bgr, -rgbx, -bgrx, -xbgr, -xrgb =\n");
+        printf("     Test the specified color conversion path in the codec (default: BGR)\n");
+        printf("-fastupsample = Use fast, inaccurate upsampling code to perform 4:2:2 and 4:2:0\n");
+        printf("     YUV decoding in libjpeg decompressor\n");
+        printf("-quiet = Output results in tabular rather than verbose format\n");
+        printf("-yuvencode = Encode RGB input as planar YUV rather than compressing as JPEG\n");
+        printf("-yuvdecode = Decode JPEG image to planar YUV rather than RGB\n");
+        printf("-scale M/N = scale down the width/height of the decompressed JPEG image by a\n");
+        printf("     factor of M/N (M/N = ");
+        for(i=0; i<nsf; i++)
+        {
+                printf("%d/%d", scalingfactors[i].num, scalingfactors[i].denom);
+                if(nsf==2 && i!=nsf-1) printf(" or ");
+                else if(nsf>2)
+                {
+                        if(i!=nsf-1) printf(", ");
+                        if(i==nsf-2) printf("or ");
+                }
+        }
+        printf(")\n");
+        printf("-hflip, -vflip, -transpose, -transverse, -rot90, -rot180, -rot270 =\n");
+        printf("     Perform the corresponding lossless transform prior to\n");
+        printf("     decompression (these options are mutually exclusive)\n");
+        printf("-grayscale = Perform lossless grayscale conversion prior to decompression\n");
+        printf("     test (can be combined with the other transforms above)\n");
+        printf("-benchtime <t> = Run each benchmark for at least <t> seconds (default = 5.0)\n\n");
+        printf("NOTE:  If the quality is specified as a range (e.g. 90-100), a separate\n");
+        printf("test will be performed for all quality values in the range.\n\n");
+        exit(1);
+}
+
+
+int main(int argc, char *argv[])
+{
+        unsigned char *srcbuf=NULL;  int w, h, i, j;
+        int minqual=-1, maxqual=-1;  char *temp;
+        int minarg=2;  int retval=0;
+
+        if((scalingfactors=tjGetScalingFactors(&nsf))==NULL || nsf==0)
+                _throwtj("executing tjGetScalingFactors()");
+
+        if(argc<minarg) usage(argv[0]);
+
+        temp=strrchr(argv[1], '.');
+        if(temp!=NULL)
+        {
+                if(!strcasecmp(temp, ".bmp")) ext="bmp";
+                if(!strcasecmp(temp, ".jpg") || !strcasecmp(temp, ".jpeg")) decomponly=1;
+        }
+
+        printf("\n");
+
+        if(argc>minarg)
+        {
+                for(i=minarg; i<argc; i++)
+                {
+                        if(!strcasecmp(argv[i], "-yuvencode"))
+                        {
+                                printf("Testing YUV planar encoding\n\n");
+                                yuv=YUVENCODE;  maxqual=minqual=100;
+                        }
+                        if(!strcasecmp(argv[i], "-yuvdecode"))
+                        {
+                                printf("Testing YUV planar decoding\n\n");
+                                yuv=YUVDECODE;
+                        }
+                }
+        }
+
+        if(!decomponly && yuv!=YUVENCODE)
+        {
+                minarg=3;
+                if(argc<minarg) usage(argv[0]);
+                if((minqual=atoi(argv[2]))<1 || minqual>100)
+                {
+                        puts("ERROR: Quality must be between 1 and 100.");
+                        exit(1);
+                }
+                if((temp=strchr(argv[2], '-'))!=NULL && strlen(temp)>1
+                        && sscanf(&temp[1], "%d", &maxqual)==1 && maxqual>minqual && maxqual>=1
+                        && maxqual<=100) {}
+                else maxqual=minqual;
+        }
+
+        if(argc>minarg)
+        {
+                for(i=minarg; i<argc; i++)
+                {
+                        if(!strcasecmp(argv[i], "-tile"))
+                        {
+                                dotile=1;  xformopt|=TJXOPT_CROP;
+                        }
+                        if(!strcasecmp(argv[i], "-forcesse3"))
+                        {
+                                printf("Forcing SSE3 code\n\n");
+                                flags|=TJFLAG_FORCESSE3;
+                        }
+                        if(!strcasecmp(argv[i], "-forcesse2"))
+                        {
+                                printf("Forcing SSE2 code\n\n");
+                                flags|=TJFLAG_FORCESSE2;
+                        }
+                        if(!strcasecmp(argv[i], "-forcesse"))
+                        {
+                                printf("Forcing SSE code\n\n");
+                                flags|=TJFLAG_FORCESSE;
+                        }
+                        if(!strcasecmp(argv[i], "-forcemmx"))
+                        {
+                                printf("Forcing MMX code\n\n");
+                                flags|=TJFLAG_FORCEMMX;
+                        }
+                        if(!strcasecmp(argv[i], "-fastupsample"))
+                        {
+                                printf("Using fast upsampling code\n\n");
+                                flags|=TJFLAG_FASTUPSAMPLE;
+                        }
+                        if(!strcasecmp(argv[i], "-rgb")) pf=TJPF_RGB;
+                        if(!strcasecmp(argv[i], "-rgbx")) pf=TJPF_RGBX;
+                        if(!strcasecmp(argv[i], "-bgr")) pf=TJPF_BGR;
+                        if(!strcasecmp(argv[i], "-bgrx")) pf=TJPF_BGRX;
+                        if(!strcasecmp(argv[i], "-xbgr")) pf=TJPF_XBGR;
+                        if(!strcasecmp(argv[i], "-xrgb")) pf=TJPF_XRGB;
+                        if(!strcasecmp(argv[i], "-bottomup")) flags|=TJFLAG_BOTTOMUP;
+                        if(!strcasecmp(argv[i], "-quiet")) quiet=1;
+                        if(!strcasecmp(argv[i], "-qq")) quiet=2;
+                        if(!strcasecmp(argv[i], "-scale") && i<argc-1)
+                        {
+                                int temp1=0, temp2=0, match=0;
+                                if(sscanf(argv[++i], "%d/%d", &temp1, &temp2)==2)
+                                {
+                                        for(j=0; j<nsf; j++)
+                                        {
+                                                if(temp1==scalingfactors[j].num && temp2==scalingfactors[j].denom)
+                                                {
+                                                        sf=scalingfactors[j];
+                                                        match=1;  break;
+                                                }
+                                        }
+                                        if(!match) usage(argv[0]);
+                                }
+                                else usage(argv[0]);
+                        }
+                        if(!strcasecmp(argv[i], "-hflip")) xformop=TJXOP_HFLIP;
+                        if(!strcasecmp(argv[i], "-vflip")) xformop=TJXOP_VFLIP;
+                        if(!strcasecmp(argv[i], "-transpose")) xformop=TJXOP_TRANSPOSE;
+                        if(!strcasecmp(argv[i], "-transverse")) xformop=TJXOP_TRANSVERSE;
+                        if(!strcasecmp(argv[i], "-rot90")) xformop=TJXOP_ROT90;
+                        if(!strcasecmp(argv[i], "-rot180")) xformop=TJXOP_ROT180;
+                        if(!strcasecmp(argv[i], "-rot270")) xformop=TJXOP_ROT270;
+                        if(!strcasecmp(argv[i], "-grayscale")) xformopt|=TJXOPT_GRAY;
+                        if(!strcasecmp(argv[i], "-benchtime") && i<argc-1)
+                        {
+                                double temp=atof(argv[++i]);
+                                if(temp>0.0) benchtime=temp;
+                                else usage(argv[0]);
+                        }
+                        if(!strcmp(argv[i], "-?")) usage(argv[0]);
+                        if(!strcasecmp(argv[i], "-alloc")) flags&=(~TJFLAG_NOREALLOC);
+                        if(!strcasecmp(argv[i], "-bmp")) ext="bmp";
+                }
+        }
+
+        if((sf.num!=1 || sf.denom!=1) && dotile)
+        {
+                printf("Disabling tiled compression/decompression tests, because those tests do not\n");
+                printf("work when scaled decompression is enabled.\n");
+                dotile=0;
+        }
+
+        if(yuv && dotile)
+        {
+                printf("Disabling tiled compression/decompression tests, because those tests do not\n");
+                printf("work when YUV encoding or decoding is enabled.\n\n");
+                dotile=0;
+        }
+
+        if(!decomponly)
+        {
+                if(loadbmp(argv[1], &srcbuf, &w, &h, pf, (flags&TJFLAG_BOTTOMUP)!=0)==-1)
+                        _throwbmp("loading bitmap");
+                temp=strrchr(argv[1], '.');
+                if(temp!=NULL) *temp='\0';
+        }
+
+        if(quiet==1 && !decomponly)
+        {
+                printf("All performance values in Mpixels/sec\n\n");
+                printf("Bitmap\tBitmap\tJPEG\tJPEG\t%s %s \tComp\tComp\tDecomp\n",
+                        dotile? "Tile ":"Image", dotile? "Tile ":"Image");
+                printf("Format\tOrder\tSubsamp\tQual\tWidth Height\tPerf \tRatio\tPerf\n\n");
+        }
+
+        if(decomponly)
+        {
+                dodecomptest(argv[1]);
+                printf("\n");
+                goto bailout;
+        }
+        for(i=maxqual; i>=minqual; i--)
+                dotest(srcbuf, w, h, TJ_GRAYSCALE, i, argv[1]);
+        printf("\n");
+        for(i=maxqual; i>=minqual; i--)
+                dotest(srcbuf, w, h, TJ_420, i, argv[1]);
+        printf("\n");
+        for(i=maxqual; i>=minqual; i--)
+                dotest(srcbuf, w, h, TJ_422, i, argv[1]);
+        printf("\n");
+        for(i=maxqual; i>=minqual; i--)
+                dotest(srcbuf, w, h, TJ_444, i, argv[1]);
+        printf("\n");
+
+        bailout:
+        if(srcbuf) free(srcbuf);
+        return retval;
+}