1#include "CreateJavaOutputStreamAdaptor.h"
2#include "GraphicsJNI.h"
3#include "ScopedLocalRef.h"
4#include "SkFrontBufferedStream.h"
5#include "SkMovie.h"
6#include "SkStream.h"
7#include "SkUtils.h"
8#include "Utils.h"
9#include "core_jni_helpers.h"
10
11#include <androidfw/Asset.h>
12#include <androidfw/ResourceTypes.h>
13#include <hwui/Canvas.h>
14#include <hwui/Paint.h>
15#include <jni.h>
16#include <netinet/in.h>
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<jlong>(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->GetLongField(movie, gMovie_nativeInstanceID);
35    SkASSERT(m);
36    return m;
37}
38
39///////////////////////////////////////////////////////////////////////////////
40
41static jint movie_width(JNIEnv* env, jobject movie) {
42    NPE_CHECK_RETURN_ZERO(env, movie);
43    return static_cast<jint>(J2Movie(env, movie)->width());
44}
45
46static jint movie_height(JNIEnv* env, jobject movie) {
47    NPE_CHECK_RETURN_ZERO(env, movie);
48    return static_cast<jint>(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() ? JNI_TRUE : JNI_FALSE;
54}
55
56static jint movie_duration(JNIEnv* env, jobject movie) {
57    NPE_CHECK_RETURN_ZERO(env, movie);
58    return static_cast<jint>(J2Movie(env, movie)->duration());
59}
60
61static jboolean movie_setTime(JNIEnv* env, jobject movie, jint ms) {
62    NPE_CHECK_RETURN_ZERO(env, movie);
63    return J2Movie(env, movie)->setTime(ms) ? JNI_TRUE : JNI_FALSE;
64}
65
66static void movie_draw(JNIEnv* env, jobject movie, jlong canvasHandle,
67                       jfloat fx, jfloat fy, jlong paintHandle) {
68    NPE_CHECK_RETURN_VOID(env, movie);
69
70    android::Canvas* c = reinterpret_cast<android::Canvas*>(canvasHandle);
71    const android::Paint* p = reinterpret_cast<android::Paint*>(paintHandle);
72
73    // Canvas should never be NULL. However paint is an optional parameter and
74    // therefore may be NULL.
75    SkASSERT(c != NULL);
76
77    SkMovie* m = J2Movie(env, movie);
78    const SkBitmap& b = m->bitmap();
79
80    c->drawBitmap(b, fx, fy, p);
81}
82
83static jobject movie_decodeAsset(JNIEnv* env, jobject clazz, jlong native_asset) {
84    android::Asset* asset = reinterpret_cast<android::Asset*>(native_asset);
85    if (asset == NULL) return NULL;
86    android::AssetStreamAdaptor stream(asset);
87    SkMovie* moov = SkMovie::DecodeStream(&stream);
88    return create_jmovie(env, moov);
89}
90
91static jobject movie_decodeStream(JNIEnv* env, jobject clazz, jobject istream) {
92
93    NPE_CHECK_RETURN_ZERO(env, istream);
94
95    jbyteArray byteArray = env->NewByteArray(16*1024);
96    ScopedLocalRef<jbyteArray> scoper(env, byteArray);
97    SkStream* strm = CreateJavaInputStreamAdaptor(env, istream, byteArray);
98    if (NULL == strm) {
99        return 0;
100    }
101
102    // Need to buffer enough input to be able to rewind as much as might be read by a decoder
103    // trying to determine the stream's format. The only decoder for movies is GIF, which
104    // will only read 6.
105    // FIXME: Get this number from SkImageDecoder
106    // bufferedStream takes ownership of strm
107    std::unique_ptr<SkStreamRewindable> bufferedStream(SkFrontBufferedStream::Create(strm, 6));
108    SkASSERT(bufferedStream.get() != NULL);
109
110    SkMovie* moov = SkMovie::DecodeStream(bufferedStream.get());
111    return create_jmovie(env, moov);
112}
113
114static jobject movie_decodeByteArray(JNIEnv* env, jobject clazz,
115                                     jbyteArray byteArray,
116                                     jint offset, jint length) {
117
118    NPE_CHECK_RETURN_ZERO(env, byteArray);
119
120    int totalLength = env->GetArrayLength(byteArray);
121    if ((offset | length) < 0 || offset + length > totalLength) {
122        doThrowAIOOBE(env);
123        return 0;
124    }
125
126    AutoJavaByteArray   ar(env, byteArray);
127    SkMovie* moov = SkMovie::DecodeMemory(ar.ptr() + offset, length);
128    return create_jmovie(env, moov);
129}
130
131static void movie_destructor(JNIEnv* env, jobject, jlong movieHandle) {
132    SkMovie* movie = (SkMovie*) movieHandle;
133    delete movie;
134}
135
136//////////////////////////////////////////////////////////////////////////////////////////////
137
138static const JNINativeMethod gMethods[] = {
139    {   "width",    "()I",  (void*)movie_width  },
140    {   "height",   "()I",  (void*)movie_height  },
141    {   "isOpaque", "()Z",  (void*)movie_isOpaque  },
142    {   "duration", "()I",  (void*)movie_duration  },
143    {   "setTime",  "(I)Z", (void*)movie_setTime  },
144    {   "nDraw",    "(JFFJ)V",
145                            (void*)movie_draw  },
146    { "nativeDecodeAsset", "(J)Landroid/graphics/Movie;",
147                            (void*)movie_decodeAsset },
148    { "nativeDecodeStream", "(Ljava/io/InputStream;)Landroid/graphics/Movie;",
149                            (void*)movie_decodeStream },
150    { "nativeDestructor","(J)V", (void*)movie_destructor },
151    { "decodeByteArray", "([BII)Landroid/graphics/Movie;",
152                            (void*)movie_decodeByteArray },
153};
154
155int register_android_graphics_Movie(JNIEnv* env)
156{
157    gMovie_class = android::FindClassOrDie(env, "android/graphics/Movie");
158    gMovie_class = android::MakeGlobalRefOrDie(env, gMovie_class);
159
160    gMovie_constructorMethodID = android::GetMethodIDOrDie(env, gMovie_class, "<init>", "(J)V");
161
162    gMovie_nativeInstanceID = android::GetFieldIDOrDie(env, gMovie_class, "mNativeMovie", "J");
163
164    return android::RegisterMethodsOrDie(env, "android/graphics/Movie", gMethods, NELEM(gMethods));
165}
166