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
18 static jclass gMovie_class;
19 static jmethodID gMovie_constructorMethodID;
20 static jfieldID gMovie_nativeInstanceID;
21
create_jmovie(JNIEnv * env,SkMovie * moov)22 jobject 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
J2Movie(JNIEnv * env,jobject movie)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
movie_width(JNIEnv * env,jobject movie)44 static int movie_width(JNIEnv* env, jobject movie) {
45 NPE_CHECK_RETURN_ZERO(env, movie);
46 return J2Movie(env, movie)->width();
47 }
48
movie_height(JNIEnv * env,jobject movie)49 static int movie_height(JNIEnv* env, jobject movie) {
50 NPE_CHECK_RETURN_ZERO(env, movie);
51 return J2Movie(env, movie)->height();
52 }
53
movie_isOpaque(JNIEnv * env,jobject movie)54 static jboolean movie_isOpaque(JNIEnv* env, jobject movie) {
55 NPE_CHECK_RETURN_ZERO(env, movie);
56 return J2Movie(env, movie)->isOpaque();
57 }
58
movie_duration(JNIEnv * env,jobject movie)59 static int movie_duration(JNIEnv* env, jobject movie) {
60 NPE_CHECK_RETURN_ZERO(env, movie);
61 return J2Movie(env, movie)->duration();
62 }
63
movie_setTime(JNIEnv * env,jobject movie,int ms)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
movie_draw(JNIEnv * env,jobject movie,jobject canvas,jfloat fx,jfloat fy,jobject jpaint)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
movie_decodeStream(JNIEnv * env,jobject clazz,jobject istream)85 static 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
movie_decodeByteArray(JNIEnv * env,jobject clazz,jbyteArray byteArray,int offset,int length)101 static 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
118 //////////////////////////////////////////////////////////////////////////////////////////////
119
120 #include <android_runtime/AndroidRuntime.h>
121
122 static JNINativeMethod gMethods[] = {
123 { "width", "()I", (void*)movie_width },
124 { "height", "()I", (void*)movie_height },
125 { "isOpaque", "()Z", (void*)movie_isOpaque },
126 { "duration", "()I", (void*)movie_duration },
127 { "setTime", "(I)Z", (void*)movie_setTime },
128 { "draw", "(Landroid/graphics/Canvas;FFLandroid/graphics/Paint;)V",
129 (void*)movie_draw },
130 { "decodeStream", "(Ljava/io/InputStream;)Landroid/graphics/Movie;",
131 (void*)movie_decodeStream },
132 { "decodeByteArray", "([BII)Landroid/graphics/Movie;",
133 (void*)movie_decodeByteArray },
134 };
135
136 #define kClassPathName "android/graphics/Movie"
137
138 #define RETURN_ERR_IF_NULL(value) do { if (!(value)) { assert(0); return -1; } } while (false)
139
140 int register_android_graphics_Movie(JNIEnv* env);
register_android_graphics_Movie(JNIEnv * env)141 int register_android_graphics_Movie(JNIEnv* env)
142 {
143 gMovie_class = env->FindClass(kClassPathName);
144 RETURN_ERR_IF_NULL(gMovie_class);
145 gMovie_class = (jclass)env->NewGlobalRef(gMovie_class);
146
147 gMovie_constructorMethodID = env->GetMethodID(gMovie_class, "<init>", "(I)V");
148 RETURN_ERR_IF_NULL(gMovie_constructorMethodID);
149
150 gMovie_nativeInstanceID = env->GetFieldID(gMovie_class, "mNativeMovie", "I");
151 RETURN_ERR_IF_NULL(gMovie_nativeInstanceID);
152
153 return android::AndroidRuntime::registerNativeMethods(env, kClassPathName,
154 gMethods, SK_ARRAY_COUNT(gMethods));
155 }
156