Movie.cpp revision 08d7778f081aae745e6ad9e5350221b21dbf352e
1#include "SkMovie.h" 2#include "SkStream.h" 3#include "GraphicsJNI.h" 4#include "SkTemplates.h" 5#include "SkUtils.h" 6#include "CreateJavaOutputStreamAdaptor.h" 7 8#include <utils/Asset.h> 9#include <utils/ResourceTypes.h> 10#include <netinet/in.h> 11 12#if 0 13 #define TRACE_BITMAP(code) code 14#else 15 #define TRACE_BITMAP(code) 16#endif 17 18static jclass gMovie_class; 19static jmethodID gMovie_constructorMethodID; 20static jfieldID gMovie_nativeInstanceID; 21 22jobject create_jmovie(JNIEnv* env, SkMovie* moov) { 23 if (NULL == moov) { 24 return NULL; 25 } 26 jobject obj = env->AllocObject(gMovie_class); 27 if (obj) { 28 env->CallVoidMethod(obj, gMovie_constructorMethodID, (jint)moov); 29 } 30 return obj; 31} 32 33static 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 44static int movie_width(JNIEnv* env, jobject movie) { 45 NPE_CHECK_RETURN_ZERO(env, movie); 46 return J2Movie(env, movie)->width(); 47} 48 49static int movie_height(JNIEnv* env, jobject movie) { 50 NPE_CHECK_RETURN_ZERO(env, movie); 51 return J2Movie(env, movie)->height(); 52} 53 54static jboolean movie_isOpaque(JNIEnv* env, jobject movie) { 55 NPE_CHECK_RETURN_ZERO(env, movie); 56 return J2Movie(env, movie)->isOpaque(); 57} 58 59static int movie_duration(JNIEnv* env, jobject movie) { 60 NPE_CHECK_RETURN_ZERO(env, movie); 61 return J2Movie(env, movie)->duration(); 62} 63 64static 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 69static 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 85static jobject movie_decodeStream(JNIEnv* env, jobject clazz, jobject istream) { 86 87 NPE_CHECK_RETURN_ZERO(env, istream); 88 89 // what is the lifetime of the array? Can the skstream hold onto it? 90 jbyteArray byteArray = env->NewByteArray(16*1024); 91 SkStream* strm = CreateJavaInputStreamAdaptor(env, istream, byteArray); 92 if (NULL == strm) { 93 return 0; 94 } 95 96 SkMovie* moov = SkMovie::DecodeStream(strm); 97 strm->unref(); 98 return create_jmovie(env, moov); 99} 100 101static jobject movie_decodeByteArray(JNIEnv* env, jobject clazz, 102 jbyteArray byteArray, 103 int offset, int length) { 104 105 NPE_CHECK_RETURN_ZERO(env, byteArray); 106 107 int totalLength = env->GetArrayLength(byteArray); 108 if ((offset | length) < 0 || offset + length > totalLength) { 109 doThrow(env, "java/lang/ArrayIndexOutOfBoundsException"); 110 return 0; 111 } 112 113 AutoJavaByteArray ar(env, byteArray); 114 SkMovie* moov = SkMovie::DecodeMemory(ar.ptr() + offset, length); 115 return create_jmovie(env, moov); 116} 117 118static void movie_destructor(JNIEnv* env, jobject, SkMovie* movie) { 119 delete movie; 120} 121 122////////////////////////////////////////////////////////////////////////////////////////////// 123 124#include <android_runtime/AndroidRuntime.h> 125 126static JNINativeMethod gMethods[] = { 127 { "width", "()I", (void*)movie_width }, 128 { "height", "()I", (void*)movie_height }, 129 { "isOpaque", "()Z", (void*)movie_isOpaque }, 130 { "duration", "()I", (void*)movie_duration }, 131 { "setTime", "(I)Z", (void*)movie_setTime }, 132 { "draw", "(Landroid/graphics/Canvas;FFLandroid/graphics/Paint;)V", 133 (void*)movie_draw }, 134 { "decodeStream", "(Ljava/io/InputStream;)Landroid/graphics/Movie;", 135 (void*)movie_decodeStream }, 136 { "nativeDestructor","(I)V", (void*)movie_destructor }, 137 { "decodeByteArray", "([BII)Landroid/graphics/Movie;", 138 (void*)movie_decodeByteArray }, 139}; 140 141#define kClassPathName "android/graphics/Movie" 142 143#define RETURN_ERR_IF_NULL(value) do { if (!(value)) { assert(0); return -1; } } while (false) 144 145int register_android_graphics_Movie(JNIEnv* env); 146int register_android_graphics_Movie(JNIEnv* env) 147{ 148 gMovie_class = env->FindClass(kClassPathName); 149 RETURN_ERR_IF_NULL(gMovie_class); 150 gMovie_class = (jclass)env->NewGlobalRef(gMovie_class); 151 152 gMovie_constructorMethodID = env->GetMethodID(gMovie_class, "<init>", "(I)V"); 153 RETURN_ERR_IF_NULL(gMovie_constructorMethodID); 154 155 gMovie_nativeInstanceID = env->GetFieldID(gMovie_class, "mNativeMovie", "I"); 156 RETURN_ERR_IF_NULL(gMovie_nativeInstanceID); 157 158 return android::AndroidRuntime::registerNativeMethods(env, kClassPathName, 159 gMethods, SK_ARRAY_COUNT(gMethods)); 160} 161