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Merge change I7495977a into eclair

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* changes:
  Add cancelThumbnailRequest to thumbnail API.
This commit is contained in:
Android (Google) Code Review
2009-09-30 02:59:56 -04:00
parent 37b0f279a6 b994419263
commit 49e750a358
1 changed files with 45 additions and 0 deletions
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45
core/java/android/provider/MediaStore.java
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@@ -239,6 +239,26 @@ public final class MediaStore {
private static final int MICRO_KIND = 3;
private static final String[] PROJECTION = new String[] {_ID, MediaColumns.DATA};
/**
* This method cancels the thumbnail request so clients waiting for getThumbnail will be
* interrupted and return immediately. Only the original process which made the getThumbnail
* requests can cancel their own requests.
*
* @param cr ContentResolver
* @param origId original image or video id
* @param baseUri the base URI of requested thumbnails
*/
static void cancelThumbnailRequest(ContentResolver cr, long origId, Uri baseUri) {
Uri cancelUri = baseUri.buildUpon().appendQueryParameter("cancel", "1")
.appendQueryParameter("orig_id", String.valueOf(origId)).build();
Cursor c = null;
try {
c = cr.query(cancelUri, PROJECTION, null, null, null);
}
finally {
if (c != null) c.close();
}
}
/**
* This method ensure thumbnails associated with origId are generated and decode the byte
* stream from database (MICRO_KIND) or file (MINI_KIND).
@@ -257,6 +277,7 @@ public final class MediaStore {
BitmapFactory.Options options, Uri baseUri, boolean isVideo) {
Bitmap bitmap = null;
String filePath = null;
// Log.v(TAG, "getThumbnail: origId="+origId+", kind="+kind+", isVideo="+isVideo);
// some optimization for MICRO_KIND: if the magic is non-zero, we don't bother
// querying MediaProvider and simply return thumbnail.
if (kind == MICRO_KIND) {
@@ -634,6 +655,18 @@ public final class MediaStore {
kind, null, null);
}
/**
* This method cancels the thumbnail request so clients waiting for getThumbnail will be
* interrupted and return immediately. Only the original process which made the getThumbnail
* requests can cancel their own requests.
*
* @param cr ContentResolver
* @param origId original image id
*/
public static void cancelThumbnailRequest(ContentResolver cr, long origId) {
InternalThumbnails.cancelThumbnailRequest(cr, origId, EXTERNAL_CONTENT_URI);
}
/**
* This method checks if the thumbnails of the specified image (origId) has been created.
* It will be blocked until the thumbnails are generated.
@@ -1551,6 +1584,18 @@ public final class MediaStore {
*
*/
public static class Thumbnails implements BaseColumns {
/**
* This method cancels the thumbnail request so clients waiting for getThumbnail will be
* interrupted and return immediately. Only the original process which made the getThumbnail
* requests can cancel their own requests.
*
* @param cr ContentResolver
* @param origId original video id
*/
public static void cancelThumbnailRequest(ContentResolver cr, long origId) {
InternalThumbnails.cancelThumbnailRequest(cr, origId, EXTERNAL_CONTENT_URI);
}
/**
* This method checks if the thumbnails of the specified image (origId) has been created.
* It will be blocked until the thumbnails are generated.