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