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 <androidfw/Asset.h>
9#include <androidfw/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    return env->NewObject(gMovie_class, gMovie_constructorMethodID,
27            static_cast<jint>(reinterpret_cast<uintptr_t>(moov)));
28}
29
30static SkMovie* J2Movie(JNIEnv* env, jobject movie) {
31    SkASSERT(env);
32    SkASSERT(movie);
33    SkASSERT(env->IsInstanceOf(movie, gMovie_class));
34    SkMovie* m = (SkMovie*)env->GetIntField(movie, gMovie_nativeInstanceID);
35    SkASSERT(m);
36    return m;
37}
38
39///////////////////////////////////////////////////////////////////////////////
40
41static int movie_width(JNIEnv* env, jobject movie) {
42    NPE_CHECK_RETURN_ZERO(env, movie);
43    return J2Movie(env, movie)->width();
44}
45
46static int movie_height(JNIEnv* env, jobject movie) {
47    NPE_CHECK_RETURN_ZERO(env, movie);
48    return J2Movie(env, movie)->height();
49}
50
51static jboolean movie_isOpaque(JNIEnv* env, jobject movie) {
52    NPE_CHECK_RETURN_ZERO(env, movie);
53    return J2Movie(env, movie)->isOpaque();
54}
55
56static int movie_duration(JNIEnv* env, jobject movie) {
57    NPE_CHECK_RETURN_ZERO(env, movie);
58    return J2Movie(env, movie)->duration();
59}
60
61static jboolean movie_setTime(JNIEnv* env, jobject movie, int ms) {
62    NPE_CHECK_RETURN_ZERO(env, movie);
63    return J2Movie(env, movie)->setTime(ms);
64}
65
66static void movie_draw(JNIEnv* env, jobject movie, jobject canvas,
67                       jfloat fx, jfloat fy, jobject jpaint) {
68    NPE_CHECK_RETURN_VOID(env, movie);
69    NPE_CHECK_RETURN_VOID(env, canvas);
70    // its OK for paint to be null
71
72    SkMovie* m = J2Movie(env, movie);
73    SkCanvas* c = GraphicsJNI::getNativeCanvas(env, canvas);
74    SkScalar sx = SkFloatToScalar(fx);
75    SkScalar sy = SkFloatToScalar(fy);
76    const SkBitmap& b = m->bitmap();
77    const SkPaint* p = jpaint ? GraphicsJNI::getNativePaint(env, jpaint) : NULL;
78
79    c->drawBitmap(b, sx, sy, p);
80}
81
82static jobject movie_decodeStream(JNIEnv* env, jobject clazz, jobject istream) {
83
84    NPE_CHECK_RETURN_ZERO(env, istream);
85
86    // what is the lifetime of the array? Can the skstream hold onto it?
87    jbyteArray byteArray = env->NewByteArray(16*1024);
88    SkStream* strm = CreateJavaInputStreamAdaptor(env, istream, byteArray);
89    if (NULL == strm) {
90        return 0;
91    }
92
93    SkMovie* moov = SkMovie::DecodeStream(strm);
94    strm->unref();
95    return create_jmovie(env, moov);
96}
97
98static jobject movie_decodeByteArray(JNIEnv* env, jobject clazz,
99                                     jbyteArray byteArray,
100                                     int offset, int length) {
101
102    NPE_CHECK_RETURN_ZERO(env, byteArray);
103
104    int totalLength = env->GetArrayLength(byteArray);
105    if ((offset | length) < 0 || offset + length > totalLength) {
106        doThrowAIOOBE(env);
107        return 0;
108    }
109
110    AutoJavaByteArray   ar(env, byteArray);
111    SkMovie* moov = SkMovie::DecodeMemory(ar.ptr() + offset, length);
112    return create_jmovie(env, moov);
113}
114
115static void movie_destructor(JNIEnv* env, jobject, SkMovie* movie) {
116    delete movie;
117}
118
119//////////////////////////////////////////////////////////////////////////////////////////////
120
121#include <android_runtime/AndroidRuntime.h>
122
123static JNINativeMethod gMethods[] = {
124    {   "width",    "()I",  (void*)movie_width  },
125    {   "height",   "()I",  (void*)movie_height  },
126    {   "isOpaque", "()Z",  (void*)movie_isOpaque  },
127    {   "duration", "()I",  (void*)movie_duration  },
128    {   "setTime",  "(I)Z", (void*)movie_setTime  },
129    {   "draw",     "(Landroid/graphics/Canvas;FFLandroid/graphics/Paint;)V",
130                            (void*)movie_draw  },
131    { "decodeStream", "(Ljava/io/InputStream;)Landroid/graphics/Movie;",
132                            (void*)movie_decodeStream },
133    { "nativeDestructor","(I)V", (void*)movie_destructor },
134    { "decodeByteArray", "([BII)Landroid/graphics/Movie;",
135                            (void*)movie_decodeByteArray },
136};
137
138#define kClassPathName  "android/graphics/Movie"
139
140#define RETURN_ERR_IF_NULL(value)   do { if (!(value)) { assert(0); return -1; } } while (false)
141
142int register_android_graphics_Movie(JNIEnv* env)
143{
144    gMovie_class = env->FindClass(kClassPathName);
145    RETURN_ERR_IF_NULL(gMovie_class);
146    gMovie_class = (jclass)env->NewGlobalRef(gMovie_class);
147
148    gMovie_constructorMethodID = env->GetMethodID(gMovie_class, "<init>", "(I)V");
149    RETURN_ERR_IF_NULL(gMovie_constructorMethodID);
150
151    gMovie_nativeInstanceID = env->GetFieldID(gMovie_class, "mNativeMovie", "I");
152    RETURN_ERR_IF_NULL(gMovie_nativeInstanceID);
153
154    return android::AndroidRuntime::registerNativeMethods(env, kClassPathName,
155                                                       gMethods, SK_ARRAY_COUNT(gMethods));
156}
157