1 #include "ScopedLocalRef.h" 2 #include "SkFrontBufferedStream.h" 3 #include "SkMovie.h" 4 #include "SkStream.h" 5 #include "GraphicsJNI.h" 6 #include "SkTemplates.h" 7 #include "SkUtils.h" 8 #include "Utils.h" 9 #include "CreateJavaOutputStreamAdaptor.h" 10 #include "Paint.h" 11 12 #include <androidfw/Asset.h> 13 #include <androidfw/ResourceTypes.h> 14 #include <netinet/in.h> 15 16 #if 0 17 #define TRACE_BITMAP(code) code 18 #else 19 #define TRACE_BITMAP(code) 20 #endif 21 22 static jclass gMovie_class; 23 static jmethodID gMovie_constructorMethodID; 24 static jfieldID gMovie_nativeInstanceID; 25 26 jobject create_jmovie(JNIEnv* env, SkMovie* moov) { 27 if (NULL == moov) { 28 return NULL; 29 } 30 return env->NewObject(gMovie_class, gMovie_constructorMethodID, 31 static_cast<jlong>(reinterpret_cast<uintptr_t>(moov))); 32 } 33 34 static SkMovie* J2Movie(JNIEnv* env, jobject movie) { 35 SkASSERT(env); 36 SkASSERT(movie); 37 SkASSERT(env->IsInstanceOf(movie, gMovie_class)); 38 SkMovie* m = (SkMovie*)env->GetLongField(movie, gMovie_nativeInstanceID); 39 SkASSERT(m); 40 return m; 41 } 42 43 /////////////////////////////////////////////////////////////////////////////// 44 45 static jint movie_width(JNIEnv* env, jobject movie) { 46 NPE_CHECK_RETURN_ZERO(env, movie); 47 return static_cast<jint>(J2Movie(env, movie)->width()); 48 } 49 50 static jint movie_height(JNIEnv* env, jobject movie) { 51 NPE_CHECK_RETURN_ZERO(env, movie); 52 return static_cast<jint>(J2Movie(env, movie)->height()); 53 } 54 55 static jboolean movie_isOpaque(JNIEnv* env, jobject movie) { 56 NPE_CHECK_RETURN_ZERO(env, movie); 57 return J2Movie(env, movie)->isOpaque() ? JNI_TRUE : JNI_FALSE; 58 } 59 60 static jint movie_duration(JNIEnv* env, jobject movie) { 61 NPE_CHECK_RETURN_ZERO(env, movie); 62 return static_cast<jint>(J2Movie(env, movie)->duration()); 63 } 64 65 static jboolean movie_setTime(JNIEnv* env, jobject movie, jint ms) { 66 NPE_CHECK_RETURN_ZERO(env, movie); 67 return J2Movie(env, movie)->setTime(ms) ? JNI_TRUE : JNI_FALSE; 68 } 69 70 static void movie_draw(JNIEnv* env, jobject movie, jobject canvas, 71 jfloat fx, jfloat fy, jobject jpaint) { 72 NPE_CHECK_RETURN_VOID(env, movie); 73 NPE_CHECK_RETURN_VOID(env, canvas); 74 // its OK for paint to be null 75 76 SkMovie* m = J2Movie(env, movie); 77 SkCanvas* c = GraphicsJNI::getNativeCanvas(env, canvas); 78 const SkBitmap& b = m->bitmap(); 79 const SkPaint* p = jpaint ? GraphicsJNI::getNativePaint(env, jpaint) : NULL; 80 81 c->drawBitmap(b, fx, fy, p); 82 } 83 84 static jobject movie_decodeAsset(JNIEnv* env, jobject clazz, jlong native_asset) { 85 android::Asset* asset = reinterpret_cast<android::Asset*>(native_asset); 86 if (asset == NULL) return NULL; 87 SkAutoTUnref<SkStreamRewindable> stream (new android::AssetStreamAdaptor(asset, 88 android::AssetStreamAdaptor::kNo_OwnAsset, 89 android::AssetStreamAdaptor::kNo_HasMemoryBase)); 90 SkMovie* moov = SkMovie::DecodeStream(stream.get()); 91 return create_jmovie(env, moov); 92 } 93 94 static jobject movie_decodeStream(JNIEnv* env, jobject clazz, jobject istream) { 95 96 NPE_CHECK_RETURN_ZERO(env, istream); 97 98 jbyteArray byteArray = env->NewByteArray(16*1024); 99 ScopedLocalRef<jbyteArray> scoper(env, byteArray); 100 SkStream* strm = CreateJavaInputStreamAdaptor(env, istream, byteArray); 101 if (NULL == strm) { 102 return 0; 103 } 104 105 // Need to buffer enough input to be able to rewind as much as might be read by a decoder 106 // trying to determine the stream's format. The only decoder for movies is GIF, which 107 // will only read 6. 108 // FIXME: Get this number from SkImageDecoder 109 SkAutoTUnref<SkStreamRewindable> bufferedStream(SkFrontBufferedStream::Create(strm, 6)); 110 SkASSERT(bufferedStream.get() != NULL); 111 112 SkMovie* moov = SkMovie::DecodeStream(bufferedStream); 113 strm->unref(); 114 return create_jmovie(env, moov); 115 } 116 117 static jobject movie_decodeByteArray(JNIEnv* env, jobject clazz, 118 jbyteArray byteArray, 119 jint offset, jint length) { 120 121 NPE_CHECK_RETURN_ZERO(env, byteArray); 122 123 int totalLength = env->GetArrayLength(byteArray); 124 if ((offset | length) < 0 || offset + length > totalLength) { 125 doThrowAIOOBE(env); 126 return 0; 127 } 128 129 AutoJavaByteArray ar(env, byteArray); 130 SkMovie* moov = SkMovie::DecodeMemory(ar.ptr() + offset, length); 131 return create_jmovie(env, moov); 132 } 133 134 static void movie_destructor(JNIEnv* env, jobject, jlong movieHandle) { 135 SkMovie* movie = (SkMovie*) movieHandle; 136 delete movie; 137 } 138 139 ////////////////////////////////////////////////////////////////////////////////////////////// 140 141 #include <android_runtime/AndroidRuntime.h> 142 143 static JNINativeMethod gMethods[] = { 144 { "width", "()I", (void*)movie_width }, 145 { "height", "()I", (void*)movie_height }, 146 { "isOpaque", "()Z", (void*)movie_isOpaque }, 147 { "duration", "()I", (void*)movie_duration }, 148 { "setTime", "(I)Z", (void*)movie_setTime }, 149 { "draw", "(Landroid/graphics/Canvas;FFLandroid/graphics/Paint;)V", 150 (void*)movie_draw }, 151 { "nativeDecodeAsset", "(J)Landroid/graphics/Movie;", 152 (void*)movie_decodeAsset }, 153 { "nativeDecodeStream", "(Ljava/io/InputStream;)Landroid/graphics/Movie;", 154 (void*)movie_decodeStream }, 155 { "nativeDestructor","(J)V", (void*)movie_destructor }, 156 { "decodeByteArray", "([BII)Landroid/graphics/Movie;", 157 (void*)movie_decodeByteArray }, 158 }; 159 160 #define kClassPathName "android/graphics/Movie" 161 162 #define RETURN_ERR_IF_NULL(value) do { if (!(value)) { assert(0); return -1; } } while (false) 163 164 int register_android_graphics_Movie(JNIEnv* env) 165 { 166 gMovie_class = env->FindClass(kClassPathName); 167 RETURN_ERR_IF_NULL(gMovie_class); 168 gMovie_class = (jclass)env->NewGlobalRef(gMovie_class); 169 170 gMovie_constructorMethodID = env->GetMethodID(gMovie_class, "<init>", "(J)V"); 171 RETURN_ERR_IF_NULL(gMovie_constructorMethodID); 172 173 gMovie_nativeInstanceID = env->GetFieldID(gMovie_class, "mNativeMovie", "J"); 174 RETURN_ERR_IF_NULL(gMovie_nativeInstanceID); 175 176 return android::AndroidRuntime::registerNativeMethods(env, kClassPathName, 177 gMethods, SK_ARRAY_COUNT(gMethods)); 178 } 179
