Add pixel conversion speed test
Add a tests directory where we can put tests programs that can
be useful during testing. Start with a speed test for the pixel
conversion routines.
diff --git a/tests/pixelconv.cxx b/tests/pixelconv.cxx
new file mode 100644
index 0000000..ef9d3aa
--- /dev/null
+++ b/tests/pixelconv.cxx
@@ -0,0 +1,201 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#include <rfb/PixelFormat.h>
+#include <rfb/PixelTransformer.h>
+
+#include "util.h"
+
+static const int tile = 64;
+static const int fbsize = 4096;
+
+static rdr::U8 *fb1, *fb2;
+
+static rfb::PixelTransformer *pt = NULL;
+
+typedef void (*testfn) (rfb::PixelFormat&, rfb::PixelFormat&, rdr::U8*, rdr::U8*);
+
+struct TestEntry {
+ const char *label;
+ testfn fn;
+};
+
+static void testMemcpy(rfb::PixelFormat &dstpf, rfb::PixelFormat &srcpf,
+ rdr::U8 *dst, rdr::U8 *src)
+{
+ int h;
+ h = tile;
+ while (h--) {
+ memcpy(dst, src, tile * dstpf.bpp/8);
+ dst += fbsize * dstpf.bpp/8;
+ src += fbsize * dstpf.bpp/8;
+ }
+}
+
+static void testPixelTransformer(rfb::PixelFormat &dstpf,
+ rfb::PixelFormat &srcpf,
+ rdr::U8 *dst, rdr::U8 *src)
+{
+ pt->translateRect(src, fbsize, rfb::Rect(0, 0, tile, tile),
+ dst, fbsize, rfb::Point(0, 0));
+}
+
+static void testToRGB(rfb::PixelFormat &dstpf, rfb::PixelFormat &srcpf,
+ rdr::U8 *dst, rdr::U8 *src)
+{
+ srcpf.rgbFromBuffer(dst, src, tile, fbsize, tile);
+}
+
+static void testFromRGB(rfb::PixelFormat &dstpf, rfb::PixelFormat &srcpf,
+ rdr::U8 *dst, rdr::U8 *src)
+{
+ dstpf.bufferFromRGB(dst, src, tile, fbsize, tile);
+}
+
+static void doTest(testfn fn, rfb::PixelFormat &dstpf, rfb::PixelFormat &srcpf)
+{
+ if (!srcpf.isLittleEndian() && (fn == testPixelTransformer)) {
+ printf("NaN");
+ return;
+ }
+
+ startCpuCounter();
+
+ for (int i = 0;i < 10000;i++) {
+ int x, y;
+ rdr::U8 *dst, *src;
+ x = rand() % (fbsize - tile);
+ y = rand() % (fbsize - tile);
+ dst = fb1 + (x + y * fbsize) * dstpf.bpp/8;
+ src = fb2 + (x + y * fbsize) * srcpf.bpp/8;
+ fn(dstpf, srcpf, dst, src);
+ }
+
+ endCpuCounter();
+
+ float data, time;
+
+ data = (double)tile * tile * 10000;
+ time = getCpuCounter();
+
+ printf("%g", data / (1000.0*1000.0) / time);
+}
+
+struct TestEntry tests[] = {
+ {"memcpy", testMemcpy},
+ {"PixelTransformer", testPixelTransformer},
+ {"rgbFromBuffer", testToRGB},
+ {"bufferFromRGB", testFromRGB},
+};
+
+static void doTests(rfb::PixelFormat &dstpf, rfb::PixelFormat &srcpf)
+{
+ int i;
+ char dstb[256], srcb[256];
+
+ dstpf.print(dstb, sizeof(dstb));
+ srcpf.print(srcb, sizeof(srcb));
+
+ if (srcpf.isLittleEndian()) {
+ delete pt;
+ pt = new rfb::PixelTransformer;
+ pt->init(srcpf, NULL, dstpf);
+ }
+
+ printf("%s,%s", srcb, dstb);
+
+ for (i = 0;i < sizeof(tests)/sizeof(tests[0]);i++) {
+ printf(",");
+ doTest(tests[i].fn, dstpf, srcpf);
+ }
+
+ printf("\n");
+}
+
+int main(int argc, char **argv)
+{
+ int bufsize;
+
+ time_t t;
+ char datebuffer[256];
+
+ int i;
+
+ bufsize = fbsize * fbsize * 4;
+
+ fb1 = new rdr::U8[bufsize];
+ fb2 = new rdr::U8[bufsize];
+
+ for (int i = 0;i < bufsize;i++) {
+ fb1[i] = rand();
+ fb2[i] = rand();
+ }
+
+ time(&t);
+ strftime(datebuffer, sizeof(datebuffer), "%Y-%m-%d %H:%M UTC", gmtime(&t));
+
+ printf("# Pixel Conversion Test %s\n", datebuffer);
+ printf("#\n");
+ printf("# Frame buffer: %dx%d pixels\n", fbsize, fbsize);
+ printf("# Tile size: %dx%d pixels\n", tile, tile);
+ printf("#\n");
+ printf("# Note: Results are Mpixels/sec\n");
+ printf("#\n");
+
+ printf("Source format,Destination Format");
+ for (i = 0;i < sizeof(tests)/sizeof(tests[0]);i++)
+ printf(",%s", tests[i].label);
+ printf("\n");
+
+ rfb::PixelFormat dstpf, srcpf;
+
+ /* rgb888 targets */
+
+ dstpf.parse("rgb888");
+
+ srcpf.parse("rgb888");
+ doTests(dstpf, srcpf);
+
+ srcpf.parse("bgr888");
+ doTests(dstpf, srcpf);
+
+ srcpf.parse("rgb565");
+ doTests(dstpf, srcpf);
+
+ srcpf.parse("rgb232");
+ doTests(dstpf, srcpf);
+
+ /* rgb565 targets */
+
+ dstpf.parse("rgb565");
+
+ srcpf.parse("rgb888");
+ doTests(dstpf, srcpf);
+
+ srcpf.parse("bgr565");
+ doTests(dstpf, srcpf);
+
+ srcpf.parse("rgb232");
+ doTests(dstpf, srcpf);
+
+ /* rgb565 with endian conversion (both ways) */
+
+ dstpf = rfb::PixelFormat(32, 24, false, true, 255, 255, 255, 0, 8, 16);
+ srcpf = rfb::PixelFormat(32, 24, true, true, 255, 255, 255, 0, 8, 16);
+
+ doTests(srcpf, dstpf);
+
+ doTests(dstpf, srcpf);
+
+ dstpf = rfb::PixelFormat(16, 16, false, true, 31, 63, 31, 0, 5, 11);
+ srcpf = rfb::PixelFormat(16, 16, true, true, 31, 63, 31, 0, 5, 11);
+
+ doTests(srcpf, dstpf);
+
+ doTests(dstpf, srcpf);
+
+ return 0;
+}
+