yenru0/EhViewer
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Use fixed size buffer

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tarsin committed 2022-09-20 18:29:35 +08:00
1 parent 108928e524
commit 3b96328765
2 files changed
+34 -51
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app/src/main/cpp/image.c
+10 -16
View File
@@ -84,11 +84,6 @@ 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) {
@@ -159,17 +154,17 @@ bool copy_pixels(const void *src, int src_w, int src_h, int src_x, int src_y,
dst_blank_length = (size_t) (dst_y * dst_w + dst_x) * 4;
// First line
dst_pos += (int)dst_blank_length;
dst_pos += (int) dst_blank_length;
memcpy(dst + dst_pos, src + src_pos, line_stride);
dst_pos += (int)line_stride;
dst_pos += (int) line_stride;
src_pos += src_stride;
// Other lines
dst_blank_length = (size_t) ((dst_w - width) * 4);
for (line = 1; line < height; line++) {
dst_pos += (int)dst_blank_length;
dst_pos += (int) dst_blank_length;
memcpy(dst + dst_pos, src + src_pos, line_stride);
dst_pos += (int)line_stride;
dst_pos += (int) line_stride;
src_pos += src_stride;
}
@@ -216,9 +211,9 @@ IMAGE *createFromFd(int fd) {
return image;
}
IMAGE *createFromAddr(void *addr, long size) {
IMAGE *createFromAddr(void *addr, long long size) {
AImageDecoder *decoder;
AImageDecoder_createFromBuffer((const void *) addr, size, &decoder);
AImageDecoder_createFromBuffer((const void *) addr + sizeof(long long), size, &decoder);
IMAGE *image = calloc(1, sizeof(IMAGE));
SOURCE *src = calloc(1, sizeof(SOURCE));
src->decoder = decoder;
@@ -278,7 +273,7 @@ Java_com_hippo_image_Image_nativeCreate(JNIEnv *env, jclass clazz, jobject bitma
AndroidBitmap_getInfo(env, bitmap, &info);
AndroidBitmap_lockPixels(env, bitmap, &pixels);
image = create((int)info.width, (int)info.height, pixels);
image = create((int) info.width, (int) info.height, pixels);
AndroidBitmap_unlockPixels(env, bitmap);
return (jlong) image;
}
@@ -293,7 +288,8 @@ Java_com_hippo_image_Image_nativeRender(JNIEnv *env, jclass clazz, jlong ptr, ji
AndroidBitmap_getInfo(env, dst, &info);
AndroidBitmap_lockPixels(env, dst, &pixels);
render((IMAGE *) ptr, src_x, src_y, pixels, (int)info.width, (int)info.height, dst_x, dst_y, width,
render((IMAGE *) ptr, src_x, src_y, pixels, (int) info.width, (int) info.height, dst_x, dst_y,
width,
height);
AndroidBitmap_unlockPixels(env, dst);
@@ -338,9 +334,7 @@ Java_com_hippo_image_Image_nativeRecycle(JNIEnv *env, jclass clazz, jlong 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);
IMAGE *image = createFromAddr((void *) addr, *(long long *) addr);
return (jlong) image;
}