[Spice-devel] [vdagent-win PATCH v10 5/6] Add test for PNG files

[Christophe Fergeau]

Acked-by: Christophe Fergeau <cfergeau at redhat.com>

On Fri, Jul 21, 2017 at 02:51:40PM +0100, Frediano Ziglio wrote:
> Test various image and formats.
> The idea is to decode and encode again an image and
> check for differences. ImageMagick is used to create
> some test image and compare results.
> Wine is used to execute a test helper.
> 
> Signed-off-by: Frediano Ziglio <fziglio at redhat.com>
> ---
>  Makefile.am           | 20 +++++++++++++
>  test-png              | 58 ++++++++++++++++++++++++++++++++++++
>  vdagent/imagetest.cpp | 82 +++++++++++++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 160 insertions(+)
>  create mode 100755 test-png
>  create mode 100644 vdagent/imagetest.cpp
> 
> diff --git a/Makefile.am b/Makefile.am
> index 175d8f7..411bf0d 100644
> --- a/Makefile.am
> +++ b/Makefile.am
> @@ -68,6 +68,26 @@ vdservice_rc.$(OBJEXT): vdservice/vdservice.rc
>  
>  MAINTAINERCLEANFILES += vdservice_rc.$(OBJEXT)
>  
> +check_PROGRAMS = imagetest
> +
> +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)
> +
> +TESTS = test-png
> +EXTRA_DIST += test-png
> +
>  deps.txt:
>  	$(AM_V_GEN)rpm -qa | grep $(host_os) | sort | unix2dos > $@
>  
> diff --git a/test-png b/test-png
> new file mode 100755
> index 0000000..ee9d86e
> --- /dev/null
> +++ b/test-png
> @@ -0,0 +1,58 @@
> +#!/bin/bash
> +
> +VERBOSE=${VERBOSE:-0}
> +
> +IN=in.png
> +OUT=out.png
> +OUT_BMP=out.bmp
> +
> +error() {
> +    echo "$*" >&2
> +    exit 1
> +}
> +
> +verbose() {
> +    if [ $VERBOSE != 0 ]; then
> +        "$@"
> +    fi
> +}
> +
> +compare_images() {
> +    DIFF=$(compare -metric AE $1 $2 - 2>&1 > /dev/null || true)
> +    if [ "$DIFF" != "0" ]; then
> +        error "Images $1 and $2 are too different, diff $DIFF"
> +    fi
> +}
> +
> +do_test() {
> +    echo "Running image $IMAGE with '$*'..."
> +    convert $IMAGE "$@" $IN
> +    wine imagetest.exe $IN $OUT_BMP $OUT
> +    verbose ls -lh $IN
> +    verbose identify $IN
> +    verbose identify $OUT_BMP
> +    compare_images $IN $OUT
> +    compare_images $IN $OUT_BMP
> +    rm -f $IN $OUT $OUT_BMP
> +}
> +
> +do_test_all() {
> +    IMAGE="$1"
> +    do_test
> +    do_test -type Palette
> +    do_test -type Palette -colors 14
> +    do_test -type Palette -colors 3
> +    do_test -type TrueColor
> +    do_test -type Grayscale -depth 8
> +    do_test -type Grayscale -depth 2
> +    do_test -type Grayscale -depth 4
> +}
> +
> +set -e
> +# test with small image
> +do_test_all rose:
> +# test with larger image
> +do_test_all logo:
> +rm -f $IN $OUT $OUT_BMP
> +
> +verbose echo Finish
> diff --git a/vdagent/imagetest.cpp b/vdagent/imagetest.cpp
> new file mode 100644
> index 0000000..319b188
> --- /dev/null
> +++ b/vdagent/imagetest.cpp
> @@ -0,0 +1,82 @@
> +/*
> +   Copyright (C) 2017 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 <assert.h>
> +#include <vector>
> +
> +#include "vdcommon.h"
> +#include "image.h"
> +#include "imagepng.h"
> +
> +int main(int argc, char **argv)
> +{
> +    ImageCoder *coder = create_png_coder();
> +
> +    assert(coder);
> +    if (argc < 2) {
> +        fprintf(stderr, "Usage: %s <in-image> [<out-bmp> [<out-png>]]\n", argv[0]);
> +        return 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(argc > 2 ? argv[2] : "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(argc > 3 ? argv[3] : "out.png", "wb");
> +    assert(f);
> +    assert(fwrite(png, 1, png_size, f) == (unsigned long) png_size);
> +    fclose(f);
> +    free(png);
> +    png = NULL;
> +
> +    return 0;
> +}
> +
> -- 
> 2.13.3
> 
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> Spice-devel at lists.freedesktop.org
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