1 #include "CreateJavaOutputStreamAdaptor.h" 2 #include "GraphicsJNI.h" 3 #include <nativehelper/ScopedLocalRef.h> 4 #include "SkFrontBufferedStream.h" 5 #include "Movie.h" 6 #include "SkStream.h" 7 #include "SkUtils.h" 8 #include "Utils.h" 9 #include "core_jni_helpers.h" 10 11 #include <androidfw/Asset.h> 12 #include <androidfw/ResourceTypes.h> 13 #include <hwui/Canvas.h> 14 #include <hwui/Paint.h> 15 #include <jni.h> 16 #include <netinet/in.h> 17 18 static jclass gMovie_class; 19 static jmethodID gMovie_constructorMethodID; 20 static jfieldID gMovie_nativeInstanceID; 21 22 jobject create_jmovie(JNIEnv* env, Movie* moov) { 23 if (NULL == moov) { 24 return NULL; 25 } 26 return env->NewObject(gMovie_class, gMovie_constructorMethodID, 27 static_cast<jlong>(reinterpret_cast<uintptr_t>(moov))); 28 } 29 30 static Movie* J2Movie(JNIEnv* env, jobject movie) { 31 SkASSERT(env); 32 SkASSERT(movie); 33 SkASSERT(env->IsInstanceOf(movie, gMovie_class)); 34 Movie* m = (Movie*)env->GetLongField(movie, gMovie_nativeInstanceID); 35 SkASSERT(m); 36 return m; 37 } 38 39 /////////////////////////////////////////////////////////////////////////////// 40 41 static jint movie_width(JNIEnv* env, jobject movie) { 42 NPE_CHECK_RETURN_ZERO(env, movie); 43 return static_cast<jint>(J2Movie(env, movie)->width()); 44 } 45 46 static jint movie_height(JNIEnv* env, jobject movie) { 47 NPE_CHECK_RETURN_ZERO(env, movie); 48 return static_cast<jint>(J2Movie(env, movie)->height()); 49 } 50 51 static jboolean movie_isOpaque(JNIEnv* env, jobject movie) { 52 NPE_CHECK_RETURN_ZERO(env, movie); 53 return J2Movie(env, movie)->isOpaque() ? JNI_TRUE : JNI_FALSE; 54 } 55 56 static jint movie_duration(JNIEnv* env, jobject movie) { 57 NPE_CHECK_RETURN_ZERO(env, movie); 58 return static_cast<jint>(J2Movie(env, movie)->duration()); 59 } 60 61 static jboolean movie_setTime(JNIEnv* env, jobject movie, jint ms) { 62 NPE_CHECK_RETURN_ZERO(env, movie); 63 return J2Movie(env, movie)->setTime(ms) ? JNI_TRUE : JNI_FALSE; 64 } 65 66 static void movie_draw(JNIEnv* env, jobject movie, jlong canvasHandle, 67 jfloat fx, jfloat fy, jlong paintHandle) { 68 NPE_CHECK_RETURN_VOID(env, movie); 69 70 android::Canvas* c = reinterpret_cast<android::Canvas*>(canvasHandle); 71 const android::Paint* p = reinterpret_cast<android::Paint*>(paintHandle); 72 73 // Canvas should never be NULL. However paint is an optional parameter and 74 // therefore may be NULL. 75 SkASSERT(c != NULL); 76 77 Movie* m = J2Movie(env, movie); 78 const SkBitmap& b = m->bitmap(); 79 sk_sp<android::Bitmap> wrapper = android::Bitmap::createFrom(b.info(), *b.pixelRef()); 80 c->drawBitmap(*wrapper, fx, fy, p); 81 } 82 83 static jobject movie_decodeAsset(JNIEnv* env, jobject clazz, jlong native_asset) { 84 android::Asset* asset = reinterpret_cast<android::Asset*>(native_asset); 85 if (asset == NULL) return NULL; 86 android::AssetStreamAdaptor stream(asset); 87 Movie* moov = Movie::DecodeStream(&stream); 88 return create_jmovie(env, moov); 89 } 90 91 static jobject movie_decodeStream(JNIEnv* env, jobject clazz, jobject istream) { 92 93 NPE_CHECK_RETURN_ZERO(env, istream); 94 95 jbyteArray byteArray = env->NewByteArray(16*1024); 96 ScopedLocalRef<jbyteArray> scoper(env, byteArray); 97 SkStream* strm = CreateJavaInputStreamAdaptor(env, istream, byteArray); 98 if (NULL == strm) { 99 return 0; 100 } 101 102 // Need to buffer enough input to be able to rewind as much as might be read by a decoder 103 // trying to determine the stream's format. The only decoder for movies is GIF, which 104 // will only read 6. 105 // FIXME: Get this number from SkImageDecoder 106 // bufferedStream takes ownership of strm 107 std::unique_ptr<SkStreamRewindable> bufferedStream(SkFrontBufferedStream::Create(strm, 6)); 108 SkASSERT(bufferedStream.get() != NULL); 109 110 Movie* moov = Movie::DecodeStream(bufferedStream.get()); 111 return create_jmovie(env, moov); 112 } 113 114 static jobject movie_decodeByteArray(JNIEnv* env, jobject clazz, 115 jbyteArray byteArray, 116 jint offset, jint length) { 117 118 NPE_CHECK_RETURN_ZERO(env, byteArray); 119 120 int totalLength = env->GetArrayLength(byteArray); 121 if ((offset | length) < 0 || offset + length > totalLength) { 122 doThrowAIOOBE(env); 123 return 0; 124 } 125 126 AutoJavaByteArray ar(env, byteArray); 127 Movie* moov = Movie::DecodeMemory(ar.ptr() + offset, length); 128 return create_jmovie(env, moov); 129 } 130 131 static void movie_destructor(JNIEnv* env, jobject, jlong movieHandle) { 132 Movie* movie = (Movie*) movieHandle; 133 delete movie; 134 } 135 136 ////////////////////////////////////////////////////////////////////////////////////////////// 137 138 static const JNINativeMethod gMethods[] = { 139 { "width", "()I", (void*)movie_width }, 140 { "height", "()I", (void*)movie_height }, 141 { "isOpaque", "()Z", (void*)movie_isOpaque }, 142 { "duration", "()I", (void*)movie_duration }, 143 { "setTime", "(I)Z", (void*)movie_setTime }, 144 { "nDraw", "(JFFJ)V", 145 (void*)movie_draw }, 146 { "nativeDecodeAsset", "(J)Landroid/graphics/Movie;", 147 (void*)movie_decodeAsset }, 148 { "nativeDecodeStream", "(Ljava/io/InputStream;)Landroid/graphics/Movie;", 149 (void*)movie_decodeStream }, 150 { "nativeDestructor","(J)V", (void*)movie_destructor }, 151 { "decodeByteArray", "([BII)Landroid/graphics/Movie;", 152 (void*)movie_decodeByteArray }, 153 }; 154 155 int register_android_graphics_Movie(JNIEnv* env) 156 { 157 gMovie_class = android::FindClassOrDie(env, "android/graphics/Movie"); 158 gMovie_class = android::MakeGlobalRefOrDie(env, gMovie_class); 159 160 gMovie_constructorMethodID = android::GetMethodIDOrDie(env, gMovie_class, "<init>", "(J)V"); 161 162 gMovie_nativeInstanceID = android::GetFieldIDOrDie(env, gMovie_class, "mNativeMovie", "J"); 163 164 return android::RegisterMethodsOrDie(env, "android/graphics/Movie", gMethods, NELEM(gMethods)); 165 } 166
