| /* |
| * Copyright 2013 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "CodecPriv.h" |
| #include "Resources.h" |
| #include "SkAndroidCodec.h" |
| #include "SkBitmap.h" |
| #include "SkData.h" |
| #include "SkImage.h" |
| #include "SkStream.h" |
| #include "SkTypes.h" |
| #include "Test.h" |
| |
| static unsigned char gGIFData[] = { |
| 0x47, 0x49, 0x46, 0x38, 0x37, 0x61, 0x03, 0x00, 0x03, 0x00, 0xe3, 0x08, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0x00, 0x00, 0xff, 0x00, |
| 0xff, 0x80, 0x80, 0x80, 0x00, 0xff, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, |
| 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0x2c, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x03, 0x00, 0x00, 0x04, |
| 0x07, 0x50, 0x1c, 0x43, 0x40, 0x41, 0x23, 0x44, 0x00, 0x3b |
| }; |
| |
| static unsigned char gGIFDataNoColormap[] = { |
| // Header |
| 0x47, 0x49, 0x46, 0x38, 0x39, 0x61, |
| // Screen descriptor |
| 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, |
| // Graphics control extension |
| 0x21, 0xf9, 0x04, 0x01, 0x0a, 0x00, 0x01, 0x00, |
| // Image descriptor |
| 0x2c, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, |
| // Image data |
| 0x02, 0x02, 0x4c, 0x01, 0x00, |
| // Trailer |
| 0x3b |
| }; |
| |
| static unsigned char gInterlacedGIF[] = { |
| 0x47, 0x49, 0x46, 0x38, 0x37, 0x61, 0x09, 0x00, 0x09, 0x00, 0xe3, 0x08, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0x00, 0x00, 0xff, 0x00, 0xff, 0x80, |
| 0x80, 0x80, 0x00, 0xff, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x2c, 0x00, 0x00, 0x00, |
| 0x00, 0x09, 0x00, 0x09, 0x00, 0x40, 0x04, 0x1b, 0x50, 0x1c, 0x23, 0xe9, 0x44, |
| 0x23, 0x60, 0x9d, 0x09, 0x28, 0x1e, 0xf8, 0x6d, 0x64, 0x56, 0x9d, 0x53, 0xa8, |
| 0x7e, 0xa8, 0x65, 0x94, 0x5c, 0xb0, 0x8a, 0x45, 0x04, 0x00, 0x3b |
| }; |
| |
| static void test_gif_data_no_colormap(skiatest::Reporter* r, |
| void* data, |
| size_t size) { |
| SkBitmap bm; |
| bool imageDecodeSuccess = decode_memory(data, size, &bm); |
| REPORTER_ASSERT(r, imageDecodeSuccess); |
| REPORTER_ASSERT(r, bm.width() == 1); |
| REPORTER_ASSERT(r, bm.height() == 1); |
| REPORTER_ASSERT(r, !(bm.empty())); |
| if (!(bm.empty())) { |
| REPORTER_ASSERT(r, bm.getColor(0, 0) == 0x00000000); |
| } |
| } |
| static void test_gif_data(skiatest::Reporter* r, void* data, size_t size) { |
| SkBitmap bm; |
| bool imageDecodeSuccess = decode_memory(data, size, &bm); |
| REPORTER_ASSERT(r, imageDecodeSuccess); |
| REPORTER_ASSERT(r, bm.width() == 3); |
| REPORTER_ASSERT(r, bm.height() == 3); |
| REPORTER_ASSERT(r, !(bm.empty())); |
| if (!(bm.empty())) { |
| REPORTER_ASSERT(r, bm.getColor(0, 0) == 0xffff0000); |
| REPORTER_ASSERT(r, bm.getColor(1, 0) == 0xffffff00); |
| REPORTER_ASSERT(r, bm.getColor(2, 0) == 0xff00ffff); |
| REPORTER_ASSERT(r, bm.getColor(0, 1) == 0xff808080); |
| REPORTER_ASSERT(r, bm.getColor(1, 1) == 0xff000000); |
| REPORTER_ASSERT(r, bm.getColor(2, 1) == 0xff00ff00); |
| REPORTER_ASSERT(r, bm.getColor(0, 2) == 0xffffffff); |
| REPORTER_ASSERT(r, bm.getColor(1, 2) == 0xffff00ff); |
| REPORTER_ASSERT(r, bm.getColor(2, 2) == 0xff0000ff); |
| } |
| } |
| static void test_gif_data_dims(skiatest::Reporter* r, void* data, size_t size, int width, |
| int height) { |
| SkBitmap bm; |
| bool imageDecodeSuccess = decode_memory(data, size, &bm); |
| REPORTER_ASSERT(r, imageDecodeSuccess); |
| REPORTER_ASSERT(r, bm.width() == width); |
| REPORTER_ASSERT(r, bm.height() == height); |
| REPORTER_ASSERT(r, !(bm.empty())); |
| } |
| static void test_interlaced_gif_data(skiatest::Reporter* r, |
| void* data, |
| size_t size) { |
| SkBitmap bm; |
| bool imageDecodeSuccess = decode_memory(data, size, &bm); |
| REPORTER_ASSERT(r, imageDecodeSuccess); |
| REPORTER_ASSERT(r, bm.width() == 9); |
| REPORTER_ASSERT(r, bm.height() == 9); |
| REPORTER_ASSERT(r, !(bm.empty())); |
| if (!(bm.empty())) { |
| REPORTER_ASSERT(r, bm.getColor(0, 0) == 0xffff0000); |
| REPORTER_ASSERT(r, bm.getColor(1, 0) == 0xffffff00); |
| REPORTER_ASSERT(r, bm.getColor(2, 0) == 0xff00ffff); |
| |
| REPORTER_ASSERT(r, bm.getColor(0, 2) == 0xffffffff); |
| REPORTER_ASSERT(r, bm.getColor(1, 2) == 0xffff00ff); |
| REPORTER_ASSERT(r, bm.getColor(2, 2) == 0xff0000ff); |
| |
| REPORTER_ASSERT(r, bm.getColor(0, 4) == 0xff808080); |
| REPORTER_ASSERT(r, bm.getColor(1, 4) == 0xff000000); |
| REPORTER_ASSERT(r, bm.getColor(2, 4) == 0xff00ff00); |
| |
| REPORTER_ASSERT(r, bm.getColor(0, 6) == 0xffff0000); |
| REPORTER_ASSERT(r, bm.getColor(1, 6) == 0xffffff00); |
| REPORTER_ASSERT(r, bm.getColor(2, 6) == 0xff00ffff); |
| |
| REPORTER_ASSERT(r, bm.getColor(0, 8) == 0xffffffff); |
| REPORTER_ASSERT(r, bm.getColor(1, 8) == 0xffff00ff); |
| REPORTER_ASSERT(r, bm.getColor(2, 8) == 0xff0000ff); |
| } |
| } |
| |
| static void test_gif_data_short(skiatest::Reporter* r, |
| void* data, |
| size_t size) { |
| SkBitmap bm; |
| bool imageDecodeSuccess = decode_memory(data, size, &bm); |
| REPORTER_ASSERT(r, imageDecodeSuccess); |
| REPORTER_ASSERT(r, bm.width() == 3); |
| REPORTER_ASSERT(r, bm.height() == 3); |
| REPORTER_ASSERT(r, !(bm.empty())); |
| if (!(bm.empty())) { |
| REPORTER_ASSERT(r, bm.getColor(0, 0) == 0xffff0000); |
| REPORTER_ASSERT(r, bm.getColor(1, 0) == 0xffffff00); |
| REPORTER_ASSERT(r, bm.getColor(2, 0) == 0xff00ffff); |
| REPORTER_ASSERT(r, bm.getColor(0, 1) == 0xff808080); |
| REPORTER_ASSERT(r, bm.getColor(1, 1) == 0xff000000); |
| REPORTER_ASSERT(r, bm.getColor(2, 1) == 0xff00ff00); |
| } |
| } |
| |
| /** |
| This test will test the ability of the SkCodec to deal with |
| GIF files which have been mangled somehow. We want to display as |
| much of the GIF as possible. |
| */ |
| DEF_TEST(Gif, reporter) { |
| // test perfectly good images. |
| test_gif_data(reporter, static_cast<void *>(gGIFData), sizeof(gGIFData)); |
| test_interlaced_gif_data(reporter, static_cast<void *>(gInterlacedGIF), |
| sizeof(gInterlacedGIF)); |
| |
| unsigned char badData[sizeof(gGIFData)]; |
| |
| memcpy(badData, gGIFData, sizeof(gGIFData)); |
| badData[6] = 0x01; // image too wide |
| test_gif_data(reporter, static_cast<void *>(badData), sizeof(gGIFData)); |
| // "libgif warning [image too wide, expanding output to size]" |
| |
| memcpy(badData, gGIFData, sizeof(gGIFData)); |
| badData[8] = 0x01; // image too tall |
| test_gif_data(reporter, static_cast<void *>(badData), sizeof(gGIFData)); |
| // "libgif warning [image too tall, expanding output to size]" |
| |
| memcpy(badData, gGIFData, sizeof(gGIFData)); |
| badData[62] = 0x01; // image shifted right |
| test_gif_data_dims(reporter, static_cast<void *>(badData), sizeof(gGIFData), 4, 3); |
| |
| memcpy(badData, gGIFData, sizeof(gGIFData)); |
| badData[64] = 0x01; // image shifted down |
| test_gif_data_dims(reporter, static_cast<void *>(badData), sizeof(gGIFData), 3, 4); |
| |
| memcpy(badData, gGIFData, sizeof(gGIFData)); |
| badData[62] = 0xff; // image shifted right |
| badData[63] = 0xff; |
| test_gif_data_dims(reporter, static_cast<void *>(badData), sizeof(gGIFData), 3 + 0xFFFF, 3); |
| |
| memcpy(badData, gGIFData, sizeof(gGIFData)); |
| badData[64] = 0xff; // image shifted down |
| badData[65] = 0xff; |
| test_gif_data_dims(reporter, static_cast<void *>(badData), sizeof(gGIFData), 3, 3 + 0xFFFF); |
| |
| test_gif_data_no_colormap(reporter, static_cast<void *>(gGIFDataNoColormap), |
| sizeof(gGIFDataNoColormap)); |
| |
| // Since there is no color map, we do not even need to parse the image data |
| // to know that we should draw transparent. Truncate the file before the |
| // data. This should still succeed. |
| test_gif_data_no_colormap(reporter, static_cast<void *>(gGIFDataNoColormap), 31); |
| |
| // Likewise, incremental decoding should succeed here. |
| { |
| sk_sp<SkData> data = SkData::MakeWithoutCopy(gGIFDataNoColormap, 31); |
| std::unique_ptr<SkCodec> codec(SkCodec::MakeFromData(data)); |
| REPORTER_ASSERT(reporter, codec); |
| if (codec) { |
| auto info = codec->getInfo().makeColorType(kN32_SkColorType); |
| SkBitmap bm; |
| bm.allocPixels(info); |
| REPORTER_ASSERT(reporter, SkCodec::kSuccess == codec->startIncrementalDecode( |
| info, bm.getPixels(), bm.rowBytes())); |
| REPORTER_ASSERT(reporter, SkCodec::kSuccess == codec->incrementalDecode()); |
| REPORTER_ASSERT(reporter, bm.width() == 1); |
| REPORTER_ASSERT(reporter, bm.height() == 1); |
| REPORTER_ASSERT(reporter, !(bm.empty())); |
| if (!(bm.empty())) { |
| REPORTER_ASSERT(reporter, bm.getColor(0, 0) == 0x00000000); |
| } |
| } |
| } |
| |
| // test short Gif. 80 is missing a few bytes. |
| test_gif_data_short(reporter, static_cast<void *>(gGIFData), 80); |
| // "libgif warning [DGifGetLine]" |
| |
| test_interlaced_gif_data(reporter, static_cast<void *>(gInterlacedGIF), |
| 100); // 100 is missing a few bytes |
| // "libgif warning [interlace DGifGetLine]" |
| } |
| |
| // Regression test for decoding a gif image with sampleSize of 4, which was |
| // previously crashing. |
| DEF_TEST(Gif_Sampled, r) { |
| auto stream = SkFILEStream::Make(GetResourcePath("test640x479.gif").c_str()); |
| REPORTER_ASSERT(r, stream); |
| if (!stream) { |
| return; |
| } |
| |
| std::unique_ptr<SkAndroidCodec> codec(SkAndroidCodec::MakeFromStream(std::move(stream))); |
| REPORTER_ASSERT(r, codec); |
| if (!codec) { |
| return; |
| } |
| |
| SkAndroidCodec::AndroidOptions options; |
| options.fSampleSize = 4; |
| |
| SkBitmap bm; |
| bm.allocPixels(codec->getInfo()); |
| const SkCodec::Result result = codec->getAndroidPixels(codec->getInfo(), bm.getPixels(), |
| bm.rowBytes(), &options); |
| REPORTER_ASSERT(r, result == SkCodec::kSuccess); |
| } |
| |
| // If a GIF file is truncated before the header for the first image is defined, |
| // we should not create an SkCodec. |
| DEF_TEST(Codec_GifTruncated, r) { |
| sk_sp<SkData> data(GetResourceAsData("test640x479.gif")); |
| if (!data) { |
| return; |
| } |
| |
| // This is right before the header for the first image. |
| data = SkData::MakeSubset(data.get(), 0, 446); |
| std::unique_ptr<SkCodec> codec(SkCodec::MakeFromData(data)); |
| REPORTER_ASSERT(r, !codec); |
| } |
| |
| DEF_TEST(Codec_GifTruncated2, r) { |
| sk_sp<SkData> data(GetResourceAsData("box.gif")); |
| if (!data) { |
| return; |
| } |
| |
| // This is after the header, but before the color table. |
| data = SkData::MakeSubset(data.get(), 0, 23); |
| std::unique_ptr<SkCodec> codec(SkCodec::MakeFromData(data)); |
| if (!codec) { |
| ERRORF(r, "Failed to create codec with partial data"); |
| return; |
| } |
| |
| // Although we correctly created a codec, no frame is |
| // complete enough that it has its metadata. Returning 0 |
| // ensures that Chromium will not try to create a frame |
| // too early. |
| REPORTER_ASSERT(r, codec->getFrameCount() == 0); |
| } |