private static boolean usesLiveWallpaper(Context context, RomInformation info) {
String wallpaperInfoPath = info.getDataPath() + "/system/users/0/wallpaper_info.xml";
MbtoolSocket socket = MbtoolSocket.getInstance();
int id = -1;
try {
id = socket.fileOpen(context, wallpaperInfoPath, new short[] {FileOpenFlag.RDONLY}, 0);
if (id < 0) {
return false;
}
StatBuf sb = socket.fileStat(context, id);
if (sb == null) {
return false;
}
// Check file size
if (sb.st_size < 0 || sb.st_size > 1024) {
return false;
}
// Read file into memory
byte[] data = new byte[(int) sb.st_size];
int nWritten = 0;
while (nWritten < data.length) {
ByteBuffer newData = socket.fileRead(context, id, 10240);
if (newData == null) {
return false;
}
int nRead = newData.limit() - newData.position();
newData.get(data, nWritten, nRead);
nWritten += nRead;
}
socket.fileClose(context, id);
id = -1;
String xml = new String(data, Charsets.UTF_8);
return xml.contains("component=");
} catch (IOException e) {
return false;
} finally {
if (id >= 0) {
try {
socket.fileClose(context, id);
} catch (IOException e) {
// Ignore
}
}
}
}
public static CacheWallpaperResult cacheWallpaper(Context context, RomInformation info) {
if (usesLiveWallpaper(context, info)) {
// We can't render a snapshot of a live wallpaper
return CacheWallpaperResult.USES_LIVE_WALLPAPER;
}
String wallpaperPath = info.getDataPath() + "/system/users/0/wallpaper";
File wallpaperCacheFile = new File(info.getWallpaperPath());
FileOutputStream fos = null;
MbtoolSocket socket = MbtoolSocket.getInstance();
int id = -1;
try {
id = socket.fileOpen(context, wallpaperPath, new short[] {}, 0);
if (id < 0) {
return CacheWallpaperResult.FAILED;
}
// Check if we need to re-cache the file
StatBuf sb = socket.fileStat(context, id);
if (sb == null) {
return CacheWallpaperResult.FAILED;
}
if (wallpaperCacheFile.exists() && wallpaperCacheFile.lastModified() / 1000 > sb.st_mtime) {
Log.d(TAG, "Wallpaper for " + info.getId() + " has not been changed");
return CacheWallpaperResult.UP_TO_DATE;
}
// Ignore large wallpapers
if (sb.st_size < 0 || sb.st_size > 20 * 1024 * 1024) {
return CacheWallpaperResult.FAILED;
}
// Read file into memory
byte[] data = new byte[(int) sb.st_size];
int nWritten = 0;
while (nWritten < data.length) {
ByteBuffer newData = socket.fileRead(context, id, 10240);
if (newData == null) {
return CacheWallpaperResult.FAILED;
}
int nRead = newData.limit() - newData.position();
newData.get(data, nWritten, nRead);
nWritten += nRead;
}
socket.fileClose(context, id);
id = -1;
fos = new FileOutputStream(wallpaperCacheFile);
// Compression can be very slow (more than 10 seconds) for a large wallpaper, so we'll
// just cache the actual file instead
fos.write(data);
// Load into bitmap
// Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0, data.length);
// if (bitmap == null) {
// return false;
// }
// bitmap.compress(Bitmap.CompressFormat.WEBP, 100, fos);
// bitmap.recycle();
// Invalidate picasso cache
Picasso.with(context).invalidate(wallpaperCacheFile);
Log.d(TAG, "Wallpaper for " + info.getId() + " has been cached");
return CacheWallpaperResult.UPDATED;
} catch (IOException e) {
Log.e(TAG, "Failed to cache wallpaper for " + info.getId(), e);
return CacheWallpaperResult.FAILED;
} finally {
if (id >= 0) {
try {
socket.fileClose(context, id);
} catch (IOException e) {
// Ignore
}
}
IOUtils.closeQuietly(fos);
}
}