diff options
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/src/com/android/gallery3d/exif/ExifParserTest.java | 78 |
1 files changed, 68 insertions, 10 deletions
diff --git a/tests/src/com/android/gallery3d/exif/ExifParserTest.java b/tests/src/com/android/gallery3d/exif/ExifParserTest.java index 2e92231de..f89b1a227 100644 --- a/tests/src/com/android/gallery3d/exif/ExifParserTest.java +++ b/tests/src/com/android/gallery3d/exif/ExifParserTest.java @@ -16,6 +16,8 @@ package com.android.gallery3d.exif; +import android.graphics.Bitmap; +import android.graphics.BitmapFactory; import android.test.ActivityTestCase; import com.android.gallery3d.tests.R; @@ -153,12 +155,10 @@ public class ExifParserTest extends ActivityTestCase { } break; case IfdParser.TYPE_NEXT_IFD: - // There is no next ifd after ifd1; - assertTrue(false); + fail("Find a ifd after ifd1"); break; case IfdParser.TYPE_SUB_IFD: - // There is no sub ifd in ifd1; - assertTrue(false); + fail("Find a sub ifd in ifd1"); break; case IfdParser.TYPE_VALUE_OF_PREV_TAG: checkTag(ifdParser.getCorrespodingExifTag(), ifdParser, IFD1_VALUE); @@ -182,12 +182,10 @@ public class ExifParserTest extends ActivityTestCase { } break; case IfdParser.TYPE_NEXT_IFD: - // There is no next ifd after exif ifd; - assertTrue(false); + fail("Find a ifd after exif ifd"); break; case IfdParser.TYPE_SUB_IFD: - // There is no sub ifd in exif ifd; - assertTrue(false); + fail("Find a sub ifd in exif ifd"); break; case IfdParser.TYPE_VALUE_OF_PREV_TAG: checkTag(ifdParser.getCorrespodingExifTag(), ifdParser, EXIF_IFD_VALUE); @@ -274,11 +272,11 @@ public class ExifParserTest extends ActivityTestCase { break; case IfdParser.TYPE_SUB_IFD: // We won't get this since to skip everything - assertTrue(false); + fail("Get sub ifd but we've skip everything"); break; case IfdParser.TYPE_VALUE_OF_PREV_TAG: // We won't get this since to skip everything - assertTrue(false); + fail("Get value of previous tag but we've skip everything"); break; } type = ifdParser.next(); @@ -317,6 +315,66 @@ public class ExifParserTest extends ActivityTestCase { } } + public void testReadThumbnail() throws ExifInvalidFormatException, IOException { + ExifParser exifParser = new ExifParser(); + IfdParser ifdParser = exifParser.parse(mImageInputStream); + int type = ifdParser.next(); + while (type != IfdParser.TYPE_END && type != IfdParser.TYPE_NEXT_IFD) { + type = ifdParser.next(); + } + // We should meet next_ifd before end + assertTrue(type != IfdParser.TYPE_END); + + IfdParser ifd1Parser = ifdParser.parseIfdBlock(); + int thumbOffset = 0; + int thumbSize = 0; + int width = 0; + int height = 0; + boolean isFinishRead = false; + while (!isFinishRead) { + switch (ifd1Parser.next()) { + case IfdParser.TYPE_NEW_TAG: + ExifTag tag = ifd1Parser.readTag(); + if (tag.getTagId() == ExifTag.TIFF_TAG.TAG_JPEG_INTERCHANGE_FORMAT) { + long unsignedInt = ifdParser.readUnsignedInt(); + assertTrue(unsignedInt <= Integer.MAX_VALUE); + thumbOffset = (int) unsignedInt; + } else if (tag.getTagId() == + ExifTag.TIFF_TAG.TAG_JPEG_INTERCHANGE_FORMAT_LENGTH) { + long unsignedInt = ifdParser.readUnsignedInt(); + assertTrue(unsignedInt <= Integer.MAX_VALUE); + thumbSize = (int) unsignedInt; + } else if (tag.getTagId() == ExifTag.TIFF_TAG.TAG_IMAGE_WIDTH) { + long unsigned = tag.getDataType() == ExifTag.TYPE_INT ? + ifd1Parser.readUnsignedInt() : ifd1Parser.readUnsignedShort(); + assertTrue(unsigned <= (tag.getDataType() == ExifTag.TYPE_INT ? + Integer.MAX_VALUE: Short.MAX_VALUE)); + width = (int) unsigned; + } else if (tag.getTagId() == ExifTag.TIFF_TAG.TAG_IMAGE_HEIGHT) { + long unsigned = tag.getDataType() == ExifTag.TYPE_INT ? + ifd1Parser.readUnsignedInt() : ifd1Parser.readUnsignedShort(); + assertTrue(unsigned <= (tag.getDataType() == ExifTag.TYPE_INT ? + Integer.MAX_VALUE: Short.MAX_VALUE)); + height = (int) unsigned; + } + isFinishRead = thumbOffset != 0 && thumbSize != 0 && width != 0 && height != 0; + break; + case IfdParser.TYPE_END: + fail("No thumbnail information found"); + break; + } + } + + byte buf[] = new byte[thumbSize]; + ifd1Parser.skipTo(thumbOffset); + ifd1Parser.read(buf); + Bitmap bmp = BitmapFactory.decodeByteArray(buf, 0, thumbSize); + // Check correctly decoded + assertTrue(bmp != null); + assertEquals(width, bmp.getWidth()); + assertEquals(height, bmp.getHeight()); + } + @Override protected void tearDown() throws IOException { mImageInputStream.close(); |