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/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef MEDIASCANNER_H
#define MEDIASCANNER_H
#include <utils/Log.h>
#include <utils/threads.h>
#include <utils/List.h>
#include <utils/Errors.h>
#include <pthread.h>
struct dirent;
namespace android {
class MediaScannerClient;
class StringArray;
enum MediaScanResult {
// This file or directory was scanned successfully.
MEDIA_SCAN_RESULT_OK,
// This file or directory was skipped because it was not found, could
// not be opened, was of an unsupported type, or was malfored in some way.
MEDIA_SCAN_RESULT_SKIPPED,
// The scan should be aborted due to a fatal error such as out of memory
// or an exception.
MEDIA_SCAN_RESULT_ERROR,
};
struct MediaAlbumArt {
public:
static MediaAlbumArt *fromData(int32_t size, const void* data);
static void init(MediaAlbumArt* instance, int32_t size, const void* data);
MediaAlbumArt *clone();
const char *data() {
return &mData[0];
}
int32_t size() {
return mSize;
}
private:
int32_t mSize;
char mData[];
// You can't construct instances of this class directly because this is a
// variable-sized object passed through the binder.
MediaAlbumArt();
} __packed;
struct MediaScanner {
MediaScanner();
virtual ~MediaScanner();
virtual MediaScanResult processFile(
const char *path, const char *mimeType, MediaScannerClient &client) = 0;
virtual MediaScanResult processDirectory(
const char *path, MediaScannerClient &client);
void setLocale(const char *locale);
virtual MediaAlbumArt *extractAlbumArt(int fd) = 0;
protected:
const char *locale() const;
private:
// current locale (like "ja_JP"), created/destroyed with strdup()/free()
char *mLocale;
char *mSkipList;
int *mSkipIndex;
MediaScanResult doProcessDirectory(
char *path, int pathRemaining, MediaScannerClient &client, bool noMedia);
MediaScanResult doProcessDirectoryEntry(
char *path, int pathRemaining, MediaScannerClient &client, bool noMedia,
struct dirent* entry, char* fileSpot);
void loadSkipList();
bool shouldSkipDirectory(char *path);
MediaScanner(const MediaScanner &);
MediaScanner &operator=(const MediaScanner &);
};
class MediaScannerClient
{
public:
MediaScannerClient();
virtual ~MediaScannerClient();
void setLocale(const char* locale);
void beginFile();
status_t addStringTag(const char* name, const char* value);
void endFile();
virtual status_t scanFile(const char* path, long long lastModified,
long long fileSize, bool isDirectory, bool noMedia) = 0;
virtual status_t handleStringTag(const char* name, const char* value) = 0;
virtual status_t setMimeType(const char* mimeType) = 0;
protected:
void convertValues(uint32_t encoding);
protected:
// cached name and value strings, for native encoding support.
StringArray* mNames;
StringArray* mValues;
// default encoding based on MediaScanner::mLocale string
uint32_t mLocaleEncoding;
};
}; // namespace android
#endif // MEDIASCANNER_H
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