diff --git a/.idea/gradle.xml b/.idea/gradle.xml
index 746f6552..86033534 100644
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -10,11 +10,11 @@
-
+
diff --git a/.idea/modules.xml b/.idea/modules.xml
index a9f68a60..be1076ff 100644
--- a/.idea/modules.xml
+++ b/.idea/modules.xml
@@ -5,11 +5,11 @@
-
+
\ No newline at end of file
diff --git a/apng_sample/.gitignore b/sample_apng/.gitignore
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diff --git a/apng_sample/build.gradle b/sample_apng/build.gradle
similarity index 100%
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diff --git a/apng_sample/proguard-rules.pro b/sample_apng/proguard-rules.pro
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diff --git a/apng_sample/src/androidTest/java/jp/juggler/apng/sample/ExampleInstrumentedTest.java b/sample_apng/src/androidTest/java/jp/juggler/apng/sample/ExampleInstrumentedTest.java
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rename from apng_sample/src/androidTest/java/jp/juggler/apng/sample/ExampleInstrumentedTest.java
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diff --git a/apng_sample/src/main/AndroidManifest.xml b/sample_apng/src/main/AndroidManifest.xml
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rename from apng_sample/src/main/AndroidManifest.xml
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diff --git a/apng_sample/src/main/java/jp/juggler/apng/sample/ActList.kt b/sample_apng/src/main/java/jp/juggler/apng/sample/ActList.kt
similarity index 100%
rename from apng_sample/src/main/java/jp/juggler/apng/sample/ActList.kt
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diff --git a/apng_sample/src/main/java/jp/juggler/apng/sample/ActViewer.kt b/sample_apng/src/main/java/jp/juggler/apng/sample/ActViewer.kt
similarity index 100%
rename from apng_sample/src/main/java/jp/juggler/apng/sample/ActViewer.kt
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diff --git a/apng_sample/src/main/java/jp/juggler/apng/sample/ApngView.kt b/sample_apng/src/main/java/jp/juggler/apng/sample/ApngView.kt
similarity index 100%
rename from apng_sample/src/main/java/jp/juggler/apng/sample/ApngView.kt
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diff --git a/apng_sample/src/main/res/drawable-v24/ic_launcher_foreground.xml b/sample_apng/src/main/res/drawable-v24/ic_launcher_foreground.xml
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rename from apng_sample/src/main/res/drawable-v24/ic_launcher_foreground.xml
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diff --git a/apng_sample/src/main/res/drawable-xxxhdpi/media_bg_dark.png b/sample_apng/src/main/res/drawable-xxxhdpi/media_bg_dark.png
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diff --git a/apng_sample/src/main/res/drawable/ic_launcher_background.xml b/sample_apng/src/main/res/drawable/ic_launcher_background.xml
similarity index 100%
rename from apng_sample/src/main/res/drawable/ic_launcher_background.xml
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diff --git a/apng_sample/src/main/res/drawable/media_background.xml b/sample_apng/src/main/res/drawable/media_background.xml
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rename from apng_sample/src/main/res/drawable/media_background.xml
rename to sample_apng/src/main/res/drawable/media_background.xml
diff --git a/apng_sample/src/main/res/layout/act_apng_view.xml b/sample_apng/src/main/res/layout/act_apng_view.xml
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rename from apng_sample/src/main/res/layout/act_apng_view.xml
rename to sample_apng/src/main/res/layout/act_apng_view.xml
diff --git a/apng_sample/src/main/res/layout/act_list.xml b/sample_apng/src/main/res/layout/act_list.xml
similarity index 100%
rename from apng_sample/src/main/res/layout/act_list.xml
rename to sample_apng/src/main/res/layout/act_list.xml
diff --git a/apng_sample/src/main/res/layout/lv_item.xml b/sample_apng/src/main/res/layout/lv_item.xml
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rename from apng_sample/src/main/res/layout/lv_item.xml
rename to sample_apng/src/main/res/layout/lv_item.xml
diff --git a/apng_sample/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/sample_apng/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
similarity index 100%
rename from apng_sample/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
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diff --git a/apng_sample/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/sample_apng/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
similarity index 100%
rename from apng_sample/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
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diff --git a/apng_sample/src/main/res/mipmap-hdpi/ic_launcher.png b/sample_apng/src/main/res/mipmap-hdpi/ic_launcher.png
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diff --git a/apng_sample/src/main/res/mipmap-hdpi/ic_launcher_round.png b/sample_apng/src/main/res/mipmap-hdpi/ic_launcher_round.png
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diff --git a/apng_sample/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png b/sample_apng/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
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diff --git a/apng_sample/src/main/res/raw/s39i3p04.png b/sample_apng/src/main/res/raw/s39i3p04.png
similarity index 100%
rename from apng_sample/src/main/res/raw/s39i3p04.png
rename to sample_apng/src/main/res/raw/s39i3p04.png
diff --git a/apng_sample/src/main/res/raw/s39n3p04.png b/sample_apng/src/main/res/raw/s39n3p04.png
similarity index 100%
rename from apng_sample/src/main/res/raw/s39n3p04.png
rename to sample_apng/src/main/res/raw/s39n3p04.png
diff --git a/apng_sample/src/main/res/raw/s40i3p04.png b/sample_apng/src/main/res/raw/s40i3p04.png
similarity index 100%
rename from apng_sample/src/main/res/raw/s40i3p04.png
rename to sample_apng/src/main/res/raw/s40i3p04.png
diff --git a/apng_sample/src/main/res/raw/s40n3p04.png b/sample_apng/src/main/res/raw/s40n3p04.png
similarity index 100%
rename from apng_sample/src/main/res/raw/s40n3p04.png
rename to sample_apng/src/main/res/raw/s40n3p04.png
diff --git a/apng_sample/src/main/res/raw/sabakan.png b/sample_apng/src/main/res/raw/sabakan.png
similarity index 100%
rename from apng_sample/src/main/res/raw/sabakan.png
rename to sample_apng/src/main/res/raw/sabakan.png
diff --git a/apng_sample/src/main/res/raw/sflogo.png b/sample_apng/src/main/res/raw/sflogo.png
similarity index 100%
rename from apng_sample/src/main/res/raw/sflogo.png
rename to sample_apng/src/main/res/raw/sflogo.png
diff --git a/apng_sample/src/main/res/raw/smile.png b/sample_apng/src/main/res/raw/smile.png
similarity index 100%
rename from apng_sample/src/main/res/raw/smile.png
rename to sample_apng/src/main/res/raw/smile.png
diff --git a/apng_sample/src/main/res/raw/soba.png b/sample_apng/src/main/res/raw/soba.png
similarity index 100%
rename from apng_sample/src/main/res/raw/soba.png
rename to sample_apng/src/main/res/raw/soba.png
diff --git a/apng_sample/src/main/res/raw/space.png b/sample_apng/src/main/res/raw/space.png
similarity index 100%
rename from apng_sample/src/main/res/raw/space.png
rename to sample_apng/src/main/res/raw/space.png
diff --git a/apng_sample/src/main/res/raw/steak.png b/sample_apng/src/main/res/raw/steak.png
similarity index 100%
rename from apng_sample/src/main/res/raw/steak.png
rename to sample_apng/src/main/res/raw/steak.png
diff --git a/apng_sample/src/main/res/raw/subwaytooter.png b/sample_apng/src/main/res/raw/subwaytooter.png
similarity index 100%
rename from apng_sample/src/main/res/raw/subwaytooter.png
rename to sample_apng/src/main/res/raw/subwaytooter.png
diff --git a/apng_sample/src/main/res/raw/tanuki.png b/sample_apng/src/main/res/raw/tanuki.png
similarity index 100%
rename from apng_sample/src/main/res/raw/tanuki.png
rename to sample_apng/src/main/res/raw/tanuki.png
diff --git a/apng_sample/src/main/res/raw/tbbn1g04.png b/sample_apng/src/main/res/raw/tbbn1g04.png
similarity index 100%
rename from apng_sample/src/main/res/raw/tbbn1g04.png
rename to sample_apng/src/main/res/raw/tbbn1g04.png
diff --git a/apng_sample/src/main/res/raw/tbbn2c16.png b/sample_apng/src/main/res/raw/tbbn2c16.png
similarity index 100%
rename from apng_sample/src/main/res/raw/tbbn2c16.png
rename to sample_apng/src/main/res/raw/tbbn2c16.png
diff --git a/apng_sample/src/main/res/raw/tbbn3p08.png b/sample_apng/src/main/res/raw/tbbn3p08.png
similarity index 100%
rename from apng_sample/src/main/res/raw/tbbn3p08.png
rename to sample_apng/src/main/res/raw/tbbn3p08.png
diff --git a/apng_sample/src/main/res/raw/tbgn2c16.png b/sample_apng/src/main/res/raw/tbgn2c16.png
similarity index 100%
rename from apng_sample/src/main/res/raw/tbgn2c16.png
rename to sample_apng/src/main/res/raw/tbgn2c16.png
diff --git a/apng_sample/src/main/res/raw/tbgn3p08.png b/sample_apng/src/main/res/raw/tbgn3p08.png
similarity index 100%
rename from apng_sample/src/main/res/raw/tbgn3p08.png
rename to sample_apng/src/main/res/raw/tbgn3p08.png
diff --git a/apng_sample/src/main/res/raw/tbrn2c08.png b/sample_apng/src/main/res/raw/tbrn2c08.png
similarity index 100%
rename from apng_sample/src/main/res/raw/tbrn2c08.png
rename to sample_apng/src/main/res/raw/tbrn2c08.png
diff --git a/apng_sample/src/main/res/raw/tbwn1g16.png b/sample_apng/src/main/res/raw/tbwn1g16.png
similarity index 100%
rename from apng_sample/src/main/res/raw/tbwn1g16.png
rename to sample_apng/src/main/res/raw/tbwn1g16.png
diff --git a/apng_sample/src/main/res/raw/tbwn3p08.png b/sample_apng/src/main/res/raw/tbwn3p08.png
similarity index 100%
rename from apng_sample/src/main/res/raw/tbwn3p08.png
rename to sample_apng/src/main/res/raw/tbwn3p08.png
diff --git a/apng_sample/src/main/res/raw/tbyn3p08.png b/sample_apng/src/main/res/raw/tbyn3p08.png
similarity index 100%
rename from apng_sample/src/main/res/raw/tbyn3p08.png
rename to sample_apng/src/main/res/raw/tbyn3p08.png
diff --git a/apng_sample/src/main/res/raw/tendon.png b/sample_apng/src/main/res/raw/tendon.png
similarity index 100%
rename from apng_sample/src/main/res/raw/tendon.png
rename to sample_apng/src/main/res/raw/tendon.png
diff --git a/apng_sample/src/main/res/raw/test_interlace1x1.png b/sample_apng/src/main/res/raw/test_interlace1x1.png
similarity index 100%
rename from apng_sample/src/main/res/raw/test_interlace1x1.png
rename to sample_apng/src/main/res/raw/test_interlace1x1.png
diff --git a/apng_sample/src/main/res/raw/test_interlace2x2.png b/sample_apng/src/main/res/raw/test_interlace2x2.png
similarity index 100%
rename from apng_sample/src/main/res/raw/test_interlace2x2.png
rename to sample_apng/src/main/res/raw/test_interlace2x2.png
diff --git a/apng_sample/src/main/res/raw/test_interlace3x3.png b/sample_apng/src/main/res/raw/test_interlace3x3.png
similarity index 100%
rename from apng_sample/src/main/res/raw/test_interlace3x3.png
rename to sample_apng/src/main/res/raw/test_interlace3x3.png
diff --git a/apng_sample/src/main/res/raw/test_interlace4x4.png b/sample_apng/src/main/res/raw/test_interlace4x4.png
similarity index 100%
rename from apng_sample/src/main/res/raw/test_interlace4x4.png
rename to sample_apng/src/main/res/raw/test_interlace4x4.png
diff --git a/apng_sample/src/main/res/raw/test_interlace5x5.png b/sample_apng/src/main/res/raw/test_interlace5x5.png
similarity index 100%
rename from apng_sample/src/main/res/raw/test_interlace5x5.png
rename to sample_apng/src/main/res/raw/test_interlace5x5.png
diff --git a/apng_sample/src/main/res/raw/test_interlace6x6.png b/sample_apng/src/main/res/raw/test_interlace6x6.png
similarity index 100%
rename from apng_sample/src/main/res/raw/test_interlace6x6.png
rename to sample_apng/src/main/res/raw/test_interlace6x6.png
diff --git a/apng_sample/src/main/res/raw/test_interlace7x7.png b/sample_apng/src/main/res/raw/test_interlace7x7.png
similarity index 100%
rename from apng_sample/src/main/res/raw/test_interlace7x7.png
rename to sample_apng/src/main/res/raw/test_interlace7x7.png
diff --git a/apng_sample/src/main/res/raw/test_interlace8x8.png b/sample_apng/src/main/res/raw/test_interlace8x8.png
similarity index 100%
rename from apng_sample/src/main/res/raw/test_interlace8x8.png
rename to sample_apng/src/main/res/raw/test_interlace8x8.png
diff --git a/apng_sample/src/main/res/raw/tp0n1g08.png b/sample_apng/src/main/res/raw/tp0n1g08.png
similarity index 100%
rename from apng_sample/src/main/res/raw/tp0n1g08.png
rename to sample_apng/src/main/res/raw/tp0n1g08.png
diff --git a/apng_sample/src/main/res/raw/tp0n2c08.png b/sample_apng/src/main/res/raw/tp0n2c08.png
similarity index 100%
rename from apng_sample/src/main/res/raw/tp0n2c08.png
rename to sample_apng/src/main/res/raw/tp0n2c08.png
diff --git a/apng_sample/src/main/res/raw/tp0n3p08.png b/sample_apng/src/main/res/raw/tp0n3p08.png
similarity index 100%
rename from apng_sample/src/main/res/raw/tp0n3p08.png
rename to sample_apng/src/main/res/raw/tp0n3p08.png
diff --git a/apng_sample/src/main/res/raw/tp1n3p08.png b/sample_apng/src/main/res/raw/tp1n3p08.png
similarity index 100%
rename from apng_sample/src/main/res/raw/tp1n3p08.png
rename to sample_apng/src/main/res/raw/tp1n3p08.png
diff --git a/apng_sample/src/main/res/raw/treasure1.png b/sample_apng/src/main/res/raw/treasure1.png
similarity index 100%
rename from apng_sample/src/main/res/raw/treasure1.png
rename to sample_apng/src/main/res/raw/treasure1.png
diff --git a/apng_sample/src/main/res/raw/treasure2.png b/sample_apng/src/main/res/raw/treasure2.png
similarity index 100%
rename from apng_sample/src/main/res/raw/treasure2.png
rename to sample_apng/src/main/res/raw/treasure2.png
diff --git a/apng_sample/src/main/res/raw/udon.png b/sample_apng/src/main/res/raw/udon.png
similarity index 100%
rename from apng_sample/src/main/res/raw/udon.png
rename to sample_apng/src/main/res/raw/udon.png
diff --git a/apng_sample/src/main/res/raw/unarist.png b/sample_apng/src/main/res/raw/unarist.png
similarity index 100%
rename from apng_sample/src/main/res/raw/unarist.png
rename to sample_apng/src/main/res/raw/unarist.png
diff --git a/apng_sample/src/main/res/raw/upstairs.png b/sample_apng/src/main/res/raw/upstairs.png
similarity index 100%
rename from apng_sample/src/main/res/raw/upstairs.png
rename to sample_apng/src/main/res/raw/upstairs.png
diff --git a/apng_sample/src/main/res/raw/wall1.png b/sample_apng/src/main/res/raw/wall1.png
similarity index 100%
rename from apng_sample/src/main/res/raw/wall1.png
rename to sample_apng/src/main/res/raw/wall1.png
diff --git a/apng_sample/src/main/res/raw/wall2.png b/sample_apng/src/main/res/raw/wall2.png
similarity index 100%
rename from apng_sample/src/main/res/raw/wall2.png
rename to sample_apng/src/main/res/raw/wall2.png
diff --git a/apng_sample/src/main/res/raw/wall3.png b/sample_apng/src/main/res/raw/wall3.png
similarity index 100%
rename from apng_sample/src/main/res/raw/wall3.png
rename to sample_apng/src/main/res/raw/wall3.png
diff --git a/apng_sample/src/main/res/raw/wall4.png b/sample_apng/src/main/res/raw/wall4.png
similarity index 100%
rename from apng_sample/src/main/res/raw/wall4.png
rename to sample_apng/src/main/res/raw/wall4.png
diff --git a/apng_sample/src/main/res/raw/x00n0g01.png b/sample_apng/src/main/res/raw/x00n0g01.png
similarity index 100%
rename from apng_sample/src/main/res/raw/x00n0g01.png
rename to sample_apng/src/main/res/raw/x00n0g01.png
diff --git a/apng_sample/src/main/res/raw/xcrn0g04.png b/sample_apng/src/main/res/raw/xcrn0g04.png
similarity index 100%
rename from apng_sample/src/main/res/raw/xcrn0g04.png
rename to sample_apng/src/main/res/raw/xcrn0g04.png
diff --git a/apng_sample/src/main/res/raw/xlfn0g04.png b/sample_apng/src/main/res/raw/xlfn0g04.png
similarity index 100%
rename from apng_sample/src/main/res/raw/xlfn0g04.png
rename to sample_apng/src/main/res/raw/xlfn0g04.png
diff --git a/apng_sample/src/main/res/raw/yakegui.png b/sample_apng/src/main/res/raw/yakegui.png
similarity index 100%
rename from apng_sample/src/main/res/raw/yakegui.png
rename to sample_apng/src/main/res/raw/yakegui.png
diff --git a/apng_sample/src/main/res/raw/yakiniku.png b/sample_apng/src/main/res/raw/yakiniku.png
similarity index 100%
rename from apng_sample/src/main/res/raw/yakiniku.png
rename to sample_apng/src/main/res/raw/yakiniku.png
diff --git a/apng_sample/src/main/res/raw/yakiniku_tare.png b/sample_apng/src/main/res/raw/yakiniku_tare.png
similarity index 100%
rename from apng_sample/src/main/res/raw/yakiniku_tare.png
rename to sample_apng/src/main/res/raw/yakiniku_tare.png
diff --git a/apng_sample/src/main/res/raw/z00n2c08.png b/sample_apng/src/main/res/raw/z00n2c08.png
similarity index 100%
rename from apng_sample/src/main/res/raw/z00n2c08.png
rename to sample_apng/src/main/res/raw/z00n2c08.png
diff --git a/apng_sample/src/main/res/raw/z03n2c08.png b/sample_apng/src/main/res/raw/z03n2c08.png
similarity index 100%
rename from apng_sample/src/main/res/raw/z03n2c08.png
rename to sample_apng/src/main/res/raw/z03n2c08.png
diff --git a/apng_sample/src/main/res/raw/z06n2c08.png b/sample_apng/src/main/res/raw/z06n2c08.png
similarity index 100%
rename from apng_sample/src/main/res/raw/z06n2c08.png
rename to sample_apng/src/main/res/raw/z06n2c08.png
diff --git a/apng_sample/src/main/res/raw/z09n2c08.png b/sample_apng/src/main/res/raw/z09n2c08.png
similarity index 100%
rename from apng_sample/src/main/res/raw/z09n2c08.png
rename to sample_apng/src/main/res/raw/z09n2c08.png
diff --git a/apng_sample/src/main/res/values/colors.xml b/sample_apng/src/main/res/values/colors.xml
similarity index 100%
rename from apng_sample/src/main/res/values/colors.xml
rename to sample_apng/src/main/res/values/colors.xml
diff --git a/apng_sample/src/main/res/values/strings.xml b/sample_apng/src/main/res/values/strings.xml
similarity index 100%
rename from apng_sample/src/main/res/values/strings.xml
rename to sample_apng/src/main/res/values/strings.xml
diff --git a/apng_sample/src/main/res/values/styles.xml b/sample_apng/src/main/res/values/styles.xml
similarity index 100%
rename from apng_sample/src/main/res/values/styles.xml
rename to sample_apng/src/main/res/values/styles.xml
diff --git a/apng_sample/src/test/java/jp/juggler/apng/sample/ExampleUnitTest.java b/sample_apng/src/test/java/jp/juggler/apng/sample/ExampleUnitTest.java
similarity index 100%
rename from apng_sample/src/test/java/jp/juggler/apng/sample/ExampleUnitTest.java
rename to sample_apng/src/test/java/jp/juggler/apng/sample/ExampleUnitTest.java
diff --git a/settings.gradle b/settings.gradle
index 561cb255..7d5ad4e7 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -1 +1 @@
-include ':app', ':apng_sample', ':apng_android', ':apng', ':exif', ':colorpicker', ':emoji'
+include ':app', ':sample_apng', ':apng_android', ':apng', ':exif', ':colorpicker', ':emoji'