/* * 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::NewFromData(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) { std::unique_ptr<SkFILEStream> stream( new SkFILEStream(GetResourcePath("test640x479.gif").c_str())); REPORTER_ASSERT(r, stream->isValid()); if (!stream->isValid()) { return; } std::unique_ptr<SkAndroidCodec> codec(SkAndroidCodec::NewFromStream(stream.release())); REPORTER_ASSERT(r, codec); if (!codec) { return; } // Construct a color table for the decode if necessary sk_sp<SkColorTable> colorTable(nullptr); SkPMColor* colorPtr = nullptr; int* colorCountPtr = nullptr; int maxColors = 256; if (kIndex_8_SkColorType == codec->getInfo().colorType()) { SkPMColor colors[256]; colorTable.reset(new SkColorTable(colors, maxColors)); colorPtr = const_cast<SkPMColor*>(colorTable->readColors()); colorCountPtr = &maxColors; } SkAndroidCodec::AndroidOptions options; options.fSampleSize = 4; options.fColorPtr = colorPtr; options.fColorCount = colorCountPtr; SkBitmap bm; bm.allocPixels(codec->getInfo(), colorTable); 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) { SkString path = GetResourcePath("test640x479.gif"); sk_sp<SkData> data(SkData::MakeFromFileName(path.c_str())); // This is right before the header for the first image. data = SkData::MakeSubset(data.get(), 0, 446); std::unique_ptr<SkCodec> codec(SkCodec::NewFromData(data)); REPORTER_ASSERT(r, !codec); } // There was a bug where SkAndroidCodec::computeOutputColorType returned kIndex_8 for // GIFs that did not support kIndex_8. Verify that for such an image, the method computes // something that it can actually decode to. DEF_TEST(Codec_GifIndex8, r) { std::unique_ptr<SkStream> stream(GetResourceAsStream("randPixelsOffset.gif")); if (!stream) { return; } std::unique_ptr<SkAndroidCodec> codec(SkAndroidCodec::NewFromStream(stream.release())); REPORTER_ASSERT(r, codec); if (!codec) { return; } REPORTER_ASSERT(r, codec->getInfo().colorType() == kN32_SkColorType); const SkColorType outputColorType = codec->computeOutputColorType(kN32_SkColorType); REPORTER_ASSERT(r, outputColorType == kN32_SkColorType); SkAndroidCodec::AndroidOptions options; sk_sp<SkColorTable> colorTable(nullptr); int maxColors = 256; if (kIndex_8_SkColorType == outputColorType) { SkPMColor colors[256]; colorTable.reset(new SkColorTable(colors, maxColors)); options.fColorPtr = const_cast<SkPMColor*>(colorTable->readColors()); options.fColorCount = &maxColors; } auto info = codec->getInfo().makeColorType(outputColorType); SkBitmap bm; bm.setInfo(info); bm.allocPixels(colorTable.get()); REPORTER_ASSERT(r, SkCodec::kSuccess == codec->getAndroidPixels(info, bm.getPixels(), bm.rowBytes(), &options)); }