Revert "archive: Use memfd instead"

* It sucks, seems simplify the conditions, but more syscalls are
  made(read/seek/write), more context switch, futhermore AImageDecoder itself does support
  read raw buffer, and we are not intend to support multi-process decoding

This reverts commit f4826ea727.

app/src/main/cpp/image.c

@@ -19,10 +19,8 @@
 
 #include <stdlib.h>
 #include <string.h>
-#include <unistd.h>
 
 #include <android/data_space.h>
-#include <android/fdsan.h>
 #include <android/imagedecoder.h>
 #include <android/log.h>
 
@@ -54,6 +52,7 @@ void image_onUnload() {
 
 typedef struct {
     AImageDecoder *decoder;
+    void *srcBuffer;
     size_t stride;
     int fd;
 } SOURCE;
@@ -73,8 +72,7 @@ static void recycleSource(SOURCE *src) {
     if (!src)
         return;
     AImageDecoder_delete(src->decoder);
-    if (!android_fdsan_get_owner_tag(src->fd))
-        close(src->fd);
+    free(src->srcBuffer);
     free(src);
 }
 
@@ -86,6 +84,11 @@ static void recycle(IMAGE *image) {
     free(image);
 }
 
+typedef struct Memarea {
+    void *buffer;
+    long size;
+} Memarea;
+
 bool copy_pixels(const void *src, int src_w, int src_h, int src_x, int src_y,
                  void *dst, int dst_w, int dst_h, int dst_x, int dst_y,
                  int width, int height) {
@@ -213,6 +216,17 @@ IMAGE *createFromFd(int fd) {
     return image;
 }
 
+IMAGE *createFromAddr(void *addr, long size) {
+    AImageDecoder *decoder;
+    AImageDecoder_createFromBuffer((const void *) addr, size, &decoder);
+    IMAGE *image = calloc(1, sizeof(IMAGE));
+    SOURCE *src = calloc(1, sizeof(SOURCE));
+    src->decoder = decoder;
+    src->srcBuffer = addr;
+    decodeCommon(image, src);
+    return image;
+}
+
 IMAGE *create(int32_t width, int32_t height, const void *data) {
     IMAGE *plain = calloc(1, sizeof(IMAGE));
     void *buffer = NULL;
@@ -342,6 +356,14 @@ Java_com_hippo_image_Image_nativeRecycle(JNIEnv *env, jclass clazz, jlong ptr) {
     recycle((IMAGE *) ptr);
 }
 
+JNIEXPORT jlong JNICALL
+Java_com_hippo_image_Image_nativeDecodeAddr(JNIEnv *env, jclass clazz, jlong addr) {
+    Memarea *memarea = (Memarea *) addr;
+    IMAGE *image = createFromAddr(memarea->buffer, memarea->size);
+    free(memarea);
+    return (jlong) image;
+}
+
 JNIEXPORT jint JNICALL
 Java_com_hippo_image_Image_nativeGetFormat(JNIEnv *env, jclass clazz, jlong native_ptr) {
     return ((IMAGE *) native_ptr)->isAnimated;