[Spice-devel] [vdagent-win RFC PATCH 7/7] RFC: Add test for PNG files

[Frediano Ziglio]

Signed-off-by: Frediano Ziglio <fziglio at redhat.com>
---
 Makefile.am           | 17 ++++++++++-
 vdagent/imagetest.cpp | 78 +++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 94 insertions(+), 1 deletion(-)
 create mode 100644 vdagent/imagetest.cpp

diff --git a/Makefile.am b/Makefile.am
index 175d8f7..56249ab 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -21,7 +21,7 @@ endif
 # -lversion is needed for the GetFileVersion* API which is used by vdlog.cpp
 LIBS = -lversion
 
-bin_PROGRAMS = vdagent vdservice
+bin_PROGRAMS = vdagent vdservice imagetest
 
 vdagent_LDADD = $(LIBPNG_LIBS) $(ZLIB_LIBS) -lwtsapi32 -lgdi32 vdagent_rc.$(OBJEXT)
 vdagent_CXXFLAGS = $(AM_CXXFLAGS) $(LIBPNG_CFLAGS)
@@ -68,6 +68,21 @@ vdservice_rc.$(OBJEXT): vdservice/vdservice.rc
 
 MAINTAINERCLEANFILES += vdservice_rc.$(OBJEXT)
 
+imagetest_LDADD = $(LIBPNG_LIBS) $(ZLIB_LIBS) -lwtsapi32 -lgdi32
+imagetest_CXXFLAGS = $(AM_CXXFLAGS) $(LIBPNG_CFLAGS)
+imagetest_LDFLAGS = $(AM_LDFLAGS) -Wl,--subsystem,console
+imagetest_SOURCES =			\
+	common/vdcommon.cpp             \
+	common/vdcommon.h		\
+	common/vdlog.cpp		\
+	common/vdlog.h			\
+	vdagent/imagetest.cpp		\
+	vdagent/image.cpp		\
+	vdagent/image.h			\
+	vdagent/imagepng.cpp		\
+	vdagent/imagepng.h		\
+	$(NULL)
+
 deps.txt:
 	$(AM_V_GEN)rpm -qa | grep $(host_os) | sort | unix2dos > $@
 
diff --git a/vdagent/imagetest.cpp b/vdagent/imagetest.cpp
new file mode 100644
index 0000000..85bd47c
--- /dev/null
+++ b/vdagent/imagetest.cpp
@@ -0,0 +1,78 @@
+/*
+   Copyright (C) 2016 Red Hat, Inc.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2 of
+   the License, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#undef NDEBUG
+#include "vdcommon.h"
+#include "image.h"
+#include "imagepng.h"
+#include <assert.h>
+#include <vector>
+
+int main(int argc, char **argv)
+{
+    ImageCoder *coder = create_png_coder();
+
+    assert(coder);
+    assert(argc >= 1);
+
+    // read all file into memory
+    FILE *f = fopen(argv[1], "rb");
+    assert(f);
+    assert(fseek(f, 0, SEEK_END) == 0);
+    long len = ftell(f);
+    assert(len > 0);
+    assert(fseek(f, 0, SEEK_SET) == 0);
+
+    std::vector<uint8_t> data(len);
+    assert(fread(&data[0], 1, len, f) == (unsigned long) len);
+    fclose(f);
+
+    size_t dib_size = coder->get_dib_size(&data[0], len);
+    assert(dib_size);
+    std::vector<uint8_t> out(dib_size);
+    memset(&out[0], 0xcc, dib_size);
+    coder->get_dib_data(&out[0], &data[0], len);
+
+    // looks like many tools wants this header so craft it
+    BITMAPFILEHEADER head;
+    memset(&head, 0, sizeof(head));
+    head.bfType = 'B'+'M'*256u;
+    head.bfSize = sizeof(head) + dib_size;
+    BITMAPINFOHEADER& info(*(BITMAPINFOHEADER*)&out[0]);
+    head.bfOffBits = sizeof(head) + sizeof(BITMAPINFOHEADER) + 4 * info.biClrUsed;
+
+    f = fopen("out.bmp", "wb");
+    assert(f);
+    assert(fwrite(&head, 1, sizeof(head), f) == sizeof(head));
+    assert(fwrite(&out[0], 1, dib_size, f) == dib_size);
+    fclose(f);
+
+    // convert back to PNG
+    long png_size = 0;
+    uint8_t *png = coder->from_bitmap(*((BITMAPINFO*)&out[0]), &out[sizeof(BITMAPINFOHEADER) + 4 * info.biClrUsed], png_size);
+    assert(png && png_size > 0);
+
+    f = fopen("out.png", "wb");
+    assert(f);
+    assert(fwrite(png, 1, png_size, f) == (unsigned long) png_size);
+    fclose(f);
+    free(png);
+    png = NULL;
+
+    return 0;
+}
+
-- 
2.9.4