| // Copyright 2020 The Wuffs Authors. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // https://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| // ---------------- |
| |
| /* |
| This test program is typically run indirectly, by the "wuffs test" or "wuffs |
| bench" commands. These commands take an optional "-mimic" flag to check that |
| Wuffs' output mimics (i.e. exactly matches) other libraries' output, such as |
| giflib for GIF, libpng for PNG, etc. |
| |
| To manually run this test: |
| |
| for CC in clang gcc; do |
| $CC -std=c99 -Wall -Werror wbmp.c && ./a.out |
| rm -f a.out |
| done |
| |
| Each edition should print "PASS", amongst other information, and exit(0). |
| |
| Add the "wuffs mimic cflags" (everything after the colon below) to the C |
| compiler flags (after the .c file) to run the mimic tests. |
| |
| To manually run the benchmarks, replace "-Wall -Werror" with "-O3" and replace |
| the first "./a.out" with "./a.out -bench". Combine these changes with the |
| "wuffs mimic cflags" to run the mimic benchmarks. |
| */ |
| |
| // !! wuffs mimic cflags: -DWUFFS_MIMIC |
| |
| // Wuffs ships as a "single file C library" or "header file library" as per |
| // https://github.com/nothings/stb/blob/master/docs/stb_howto.txt |
| // |
| // To use that single file as a "foo.c"-like implementation, instead of a |
| // "foo.h"-like header, #define WUFFS_IMPLEMENTATION before #include'ing or |
| // compiling it. |
| #define WUFFS_IMPLEMENTATION |
| |
| // Defining the WUFFS_CONFIG__MODULE* macros are optional, but it lets users of |
| // release/c/etc.c whitelist which parts of Wuffs to build. That file contains |
| // the entire Wuffs standard library, implementing a variety of codecs and file |
| // formats. Without this macro definition, an optimizing compiler or linker may |
| // very well discard Wuffs code for unused codecs, but listing the Wuffs |
| // modules we use makes that process explicit. Preprocessing means that such |
| // code simply isn't compiled. |
| #define WUFFS_CONFIG__MODULES |
| #define WUFFS_CONFIG__MODULE__BASE |
| #define WUFFS_CONFIG__MODULE__WBMP |
| |
| // If building this program in an environment that doesn't easily accommodate |
| // relative includes, you can use the script/inline-c-relative-includes.go |
| // program to generate a stand-alone C file. |
| #include "../../../release/c/wuffs-unsupported-snapshot.c" |
| #include "../testlib/testlib.c" |
| #ifdef WUFFS_MIMIC |
| // No mimic library. |
| #endif |
| |
| // ---------------- Pixel Swizzler Tests |
| |
| void // |
| fill_palette_with_grays(wuffs_base__pixel_buffer* pb) { |
| wuffs_base__slice_u8 palette = wuffs_base__pixel_buffer__palette(pb); |
| if (palette.len != 1024) { |
| return; |
| } |
| int i; |
| for (i = 0; i < 256; i++) { |
| palette.ptr[(4 * i) + 0] = i; |
| palette.ptr[(4 * i) + 1] = i; |
| palette.ptr[(4 * i) + 2] = i; |
| palette.ptr[(4 * i) + 3] = 0xFF; |
| } |
| } |
| |
| bool // |
| colors_differ(wuffs_base__color_u32_argb_premul color0, |
| wuffs_base__color_u32_argb_premul color1, |
| uint32_t per_channel_tolerance) { |
| uint32_t shift; |
| for (shift = 0; shift < 32; shift += 8) { |
| uint32_t channel0 = 0xFF & (color0 >> shift); |
| uint32_t channel1 = 0xFF & (color1 >> shift); |
| uint32_t delta = |
| (channel0 > channel1) ? (channel0 - channel1) : (channel1 - channel0); |
| if (delta > per_channel_tolerance) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| const char* // |
| test_wuffs_pixel_swizzler_swizzle() { |
| CHECK_FOCUS(__func__); |
| |
| const uint32_t width = 5; |
| const uint32_t height = 5; |
| uint8_t dummy_palette_array[1024]; |
| wuffs_base__pixel_swizzler swizzler; |
| |
| const struct { |
| wuffs_base__color_u32_argb_premul pixel; |
| uint32_t pixfmt_repr; |
| } srcs[] = { |
| { |
| .pixel = 0xFF444444, |
| .pixfmt_repr = WUFFS_BASE__PIXEL_FORMAT__Y, |
| }, |
| { |
| .pixel = 0xFF444444, |
| .pixfmt_repr = WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY, |
| }, |
| { |
| .pixel = 0xFF443300, |
| .pixfmt_repr = WUFFS_BASE__PIXEL_FORMAT__BGR, |
| }, |
| { |
| .pixel = 0x55443300, |
| .pixfmt_repr = WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL, |
| }, |
| }; |
| |
| const struct { |
| wuffs_base__color_u32_argb_premul pixel; |
| uint32_t pixfmt_repr; |
| } dsts[] = { |
| { |
| .pixel = 0xFF000010, |
| .pixfmt_repr = WUFFS_BASE__PIXEL_FORMAT__BGR_565, |
| }, |
| { |
| .pixel = 0xFF000040, |
| .pixfmt_repr = WUFFS_BASE__PIXEL_FORMAT__BGR, |
| }, |
| { |
| .pixel = 0x80000040, |
| .pixfmt_repr = WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL, |
| }, |
| { |
| .pixel = 0x80000040, |
| .pixfmt_repr = WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL, |
| }, |
| }; |
| |
| const wuffs_base__pixel_blend blends[] = { |
| WUFFS_BASE__PIXEL_BLEND__SRC, |
| WUFFS_BASE__PIXEL_BLEND__SRC_OVER, |
| }; |
| |
| int s; |
| for (s = 0; s < WUFFS_TESTLIB_ARRAY_SIZE(srcs); s++) { |
| // Allocate the src_pixbuf. |
| wuffs_base__pixel_config src_pixcfg = ((wuffs_base__pixel_config){}); |
| wuffs_base__pixel_config__set(&src_pixcfg, srcs[s].pixfmt_repr, |
| WUFFS_BASE__PIXEL_SUBSAMPLING__NONE, width, |
| height); |
| wuffs_base__pixel_buffer src_pixbuf = ((wuffs_base__pixel_buffer){}); |
| CHECK_STATUS("set_from_slice", |
| wuffs_base__pixel_buffer__set_from_slice( |
| &src_pixbuf, &src_pixcfg, g_src_slice_u8)); |
| fill_palette_with_grays(&src_pixbuf); |
| |
| // Set and check the middle src pixel. |
| CHECK_STATUS("set_color_u32_at", |
| wuffs_base__pixel_buffer__set_color_u32_at( |
| &src_pixbuf, width / 2, height / 2, srcs[s].pixel)); |
| wuffs_base__color_u32_argb_premul have_src_pixel = |
| wuffs_base__pixel_buffer__color_u32_at(&src_pixbuf, width / 2, |
| height / 2); |
| if (have_src_pixel != srcs[s].pixel) { |
| RETURN_FAIL("s=%d: src_pixel: have 0x%08" PRIX32 ", want 0x%08" PRIX32, s, |
| have_src_pixel, srcs[s].pixel); |
| } |
| |
| int d; |
| for (d = 0; d < WUFFS_TESTLIB_ARRAY_SIZE(dsts); d++) { |
| // Allocate the dst_pixbuf. |
| wuffs_base__pixel_config dst_pixcfg = ((wuffs_base__pixel_config){}); |
| wuffs_base__pixel_config__set(&dst_pixcfg, dsts[d].pixfmt_repr, |
| WUFFS_BASE__PIXEL_SUBSAMPLING__NONE, width, |
| height); |
| wuffs_base__pixel_buffer dst_pixbuf = ((wuffs_base__pixel_buffer){}); |
| CHECK_STATUS("set_from_slice", |
| wuffs_base__pixel_buffer__set_from_slice( |
| &dst_pixbuf, &dst_pixcfg, g_have_slice_u8)); |
| fill_palette_with_grays(&dst_pixbuf); |
| wuffs_base__pixel_format dst_pixfmt = |
| wuffs_base__make_pixel_format(dsts[d].pixfmt_repr); |
| wuffs_base__pixel_alpha_transparency dst_transparency = |
| wuffs_base__pixel_format__transparency(&dst_pixfmt); |
| |
| wuffs_base__slice_u8 dst_palette = |
| wuffs_base__pixel_buffer__palette(&dst_pixbuf); |
| if (dst_palette.len == 0) { |
| dst_palette = wuffs_base__make_slice_u8( |
| &dummy_palette_array[0], |
| WUFFS_TESTLIB_ARRAY_SIZE(dummy_palette_array)); |
| } |
| |
| int b; |
| for (b = 0; b < WUFFS_TESTLIB_ARRAY_SIZE(blends); b++) { |
| // Set the middle dst pixel. |
| CHECK_STATUS("set_color_u32_at", |
| wuffs_base__pixel_buffer__set_color_u32_at( |
| &dst_pixbuf, width / 2, height / 2, dsts[d].pixel)); |
| |
| // Swizzle. |
| CHECK_STATUS( |
| "prepare", |
| wuffs_base__pixel_swizzler__prepare( |
| &swizzler, dst_pixfmt, dst_palette, |
| wuffs_base__make_pixel_format(srcs[s].pixfmt_repr), |
| wuffs_base__pixel_buffer__palette(&src_pixbuf), blends[b])); |
| wuffs_base__pixel_swizzler__swizzle_interleaved( |
| &swizzler, |
| wuffs_base__table_u8__row( |
| wuffs_base__pixel_buffer__plane(&dst_pixbuf, 0), height / 2), |
| dst_palette, |
| wuffs_base__table_u8__row( |
| wuffs_base__pixel_buffer__plane(&src_pixbuf, 0), height / 2)); |
| |
| // Check the middle dst pixel. |
| uint32_t tolerance = |
| (dsts[d].pixfmt_repr == WUFFS_BASE__PIXEL_FORMAT__BGR_565) ? 4 : 0; |
| wuffs_base__color_u32_argb_premul want_dst_pixel = 0; |
| if (blends[b] == WUFFS_BASE__PIXEL_BLEND__SRC) { |
| want_dst_pixel = srcs[s].pixel; |
| } else if (blends[b] == WUFFS_BASE__PIXEL_BLEND__SRC_OVER) { |
| tolerance += 1; |
| want_dst_pixel = wuffs_base__composite_premul_premul_u32_axxx( |
| dsts[d].pixel, srcs[s].pixel); |
| } else { |
| return "unsupported blend"; |
| } |
| if (dst_transparency == WUFFS_BASE__PIXEL_ALPHA_TRANSPARENCY__OPAQUE) { |
| want_dst_pixel |= 0xFF000000; |
| } |
| wuffs_base__color_u32_argb_premul have_dst_pixel = |
| wuffs_base__pixel_buffer__color_u32_at(&dst_pixbuf, width / 2, |
| height / 2); |
| if (colors_differ(have_dst_pixel, want_dst_pixel, tolerance)) { |
| RETURN_FAIL("s=%d, d=%d, b=%d: dst_pixel: have 0x%08" PRIX32 |
| ", want 0x%08" PRIX32 ", per-channel tolerance=%" PRId32, |
| s, d, b, have_dst_pixel, want_dst_pixel, tolerance); |
| } |
| } |
| } |
| } |
| return NULL; |
| } |
| |
| // ---------------- WBMP Tests |
| |
| const char* // |
| test_wuffs_wbmp_decode_interface() { |
| CHECK_FOCUS(__func__); |
| wuffs_wbmp__decoder dec; |
| CHECK_STATUS("initialize", |
| wuffs_wbmp__decoder__initialize( |
| &dec, sizeof dec, WUFFS_VERSION, |
| WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED)); |
| return do_test__wuffs_base__image_decoder( |
| wuffs_wbmp__decoder__upcast_as__wuffs_base__image_decoder(&dec), |
| "test/data/muybridge-frame-000.wbmp", 0, SIZE_MAX, 30, 20, 0xFFFFFFFF); |
| } |
| |
| const char* // |
| test_wuffs_wbmp_decode_frame_config() { |
| CHECK_FOCUS(__func__); |
| wuffs_wbmp__decoder dec; |
| CHECK_STATUS("initialize", |
| wuffs_wbmp__decoder__initialize( |
| &dec, sizeof dec, WUFFS_VERSION, |
| WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED)); |
| |
| wuffs_base__frame_config fc = ((wuffs_base__frame_config){}); |
| wuffs_base__io_buffer src = ((wuffs_base__io_buffer){ |
| .data = g_src_slice_u8, |
| }); |
| CHECK_STRING(read_file(&src, "test/data/hat.wbmp")); |
| CHECK_STATUS("decode_frame_config #0", |
| wuffs_wbmp__decoder__decode_frame_config(&dec, &fc, &src)); |
| |
| wuffs_base__status status = |
| wuffs_wbmp__decoder__decode_frame_config(&dec, &fc, &src); |
| if (status.repr != wuffs_base__note__end_of_data) { |
| RETURN_FAIL("decode_frame_config #1: have \"%s\", want \"%s\"", status.repr, |
| wuffs_base__note__end_of_data); |
| } |
| if (src.meta.ri != src.meta.wi) { |
| RETURN_FAIL("at end of data: ri (%zu) doesn't equal wi (%zu)", src.meta.ri, |
| src.meta.wi); |
| } |
| return NULL; |
| } |
| |
| const char* // |
| test_wuffs_wbmp_decode_image_config() { |
| CHECK_FOCUS(__func__); |
| wuffs_wbmp__decoder dec; |
| CHECK_STATUS("initialize", |
| wuffs_wbmp__decoder__initialize( |
| &dec, sizeof dec, WUFFS_VERSION, |
| WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED)); |
| |
| wuffs_base__image_config ic = ((wuffs_base__image_config){}); |
| wuffs_base__io_buffer src = ((wuffs_base__io_buffer){ |
| .data = g_src_slice_u8, |
| }); |
| CHECK_STRING(read_file(&src, "test/data/bricks-nodither.wbmp")); |
| CHECK_STATUS("decode_image_config", |
| wuffs_wbmp__decoder__decode_image_config(&dec, &ic, &src)); |
| |
| uint32_t have_width = wuffs_base__pixel_config__width(&ic.pixcfg); |
| uint32_t want_width = 160; |
| if (have_width != want_width) { |
| RETURN_FAIL("width: have %" PRIu32 ", want %" PRIu32, have_width, |
| want_width); |
| } |
| uint32_t have_height = wuffs_base__pixel_config__height(&ic.pixcfg); |
| uint32_t want_height = 120; |
| if (have_height != want_height) { |
| RETURN_FAIL("height: have %" PRIu32 ", want %" PRIu32, have_height, |
| want_height); |
| } |
| return NULL; |
| } |
| |
| // ---------------- Mimic Tests |
| |
| #ifdef WUFFS_MIMIC |
| |
| // No mimic tests. |
| |
| #endif // WUFFS_MIMIC |
| |
| // ---------------- WBMP Benches |
| |
| // No WBMP benches. |
| |
| // ---------------- Mimic Benches |
| |
| #ifdef WUFFS_MIMIC |
| |
| // No mimic benches. |
| |
| #endif // WUFFS_MIMIC |
| |
| // ---------------- Manifest |
| |
| proc g_tests[] = { |
| |
| // These pixel_swizzler tests are really testing the Wuffs base library. |
| // They aren't specific to the std/wbmp code, but putting them here is as |
| // good as any other place. |
| test_wuffs_pixel_swizzler_swizzle, |
| |
| test_wuffs_wbmp_decode_frame_config, |
| test_wuffs_wbmp_decode_image_config, |
| test_wuffs_wbmp_decode_interface, |
| |
| #ifdef WUFFS_MIMIC |
| |
| // No mimic tests. |
| |
| #endif // WUFFS_MIMIC |
| |
| NULL, |
| }; |
| |
| proc g_benches[] = { |
| |
| // No WBMP benches. |
| |
| #ifdef WUFFS_MIMIC |
| |
| // No mimic benches. |
| |
| #endif // WUFFS_MIMIC |
| |
| NULL, |
| }; |
| |
| int // |
| main(int argc, char** argv) { |
| g_proc_package_name = "std/wbmp"; |
| return test_main(argc, argv, g_tests, g_benches); |
| } |
