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Autres articles (37)
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Des sites réalisés avec MediaSPIP
2 mai 2011, parCette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page. -
Support audio et vidéo HTML5
10 avril 2011MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...) -
HTML5 audio and video support
13 avril 2011, parMediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
For older browsers the Flowplayer flash fallback is used.
MediaSPIP allows for media playback on major mobile platforms with the above (...)
Sur d’autres sites (2199)
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Encoding Android Camera Frames h263/h264 [on hold]
29 décembre 2015, par Another GuyI want to implement a Video Chatting app on Android . I created a SurfaceView , get Camera preview and captured the frame as a byte[ ] using Camera.PreviewCallback.onPreviewFrame( ) method . Now I want to encode that byte[ ] to a h263 frame , pass over the network . Also get similar type of frame over network , decode it to a byte[ ] ( or a displayable format ) , and show it in a View . I want to do it at least 15 FPS rate . I am asking help for the encoding/decoding part .
For that purpose , which library would be suitable for me ? From where I should start ? Is my starting point wrong ? Is there any support on SDK or would I have to use NDK ? I have heard about FFMpeg/x264 library , but I could not figure out how I can use them in my purpose . It’s highly appreciated If you name any library , any reference , learning path , link or code snippet . Can you help me saying any workflow I should follow ? What if I want to use h264 encoding ? I just want to get it done , GPL/LGPL license of library would not matter a lot .
I am a beginner in Android development . Any kind of assistance would be highly appreciated . Thanks in advance .
-
Encoding Android Camera Frames h263/h264 [closed]
29 décembre 2015, par Another GuyI want to implement a Video Chatting app on Android . I created a SurfaceView , get Camera preview and captured the frame as a byte[ ] using Camera.PreviewCallback.onPreviewFrame( ) method . Now I want to encode that byte[ ] to a h263 frame , pass over the network . Also get similar type of frame over network , decode it to a byte[ ] ( or a displayable format ) , and show it in a View . I want to do it at least 15 FPS rate . I am asking help for the encoding/decoding part .
For that purpose , which library would be suitable for me ? From where I should start ? Is my starting point wrong ? Is there any support on SDK or would I have to use NDK ? I have heard about FFMpeg/x264 library , but I could not figure out how I can use them in my purpose . It’s highly appreciated If you name any library , any reference , learning path , link or code snippet . Can you help me saying any workflow I should follow ? What if I want to use h264 encoding ? I just want to get it done , GPL/LGPL license of library would not matter a lot .
I am a beginner in Android development . Any kind of assistance would be highly appreciated . Thanks in advance .
-
Getting Error during executin native android code
3 avril 2013, par dilipkaklotarError on my console
bash : cannot set terminal process group (-1) : Inappropriate ioctl for device
bash : no job control in this shell
Your group is currently "mkpasswd". This indicates that your
gid is not in /etc/group and your uid is not in /etc/passwd.The /etc/passwd (and possibly /etc/group) files should be rebuilt.
See the man pages for mkpasswd and mkgroup then, for example, runmkpasswd -l [-d] > /etc/passwd
mkgroup -l [-d] > /etc/groupNote that the -d switch is necessary for domain users.
]0 ; -
[32mDILIP@DILIP-PC -[33m -[0m
$public class VideoBrowser extends ListActivity implements ListView.OnScrollListener {
/*this part communicates with native code through jni (java native interface)*/
//load the native library
static {
System.loadLibrary("ffmpeg");
System.loadLibrary("ffmpeg-test-jni");
}
//declare the jni functions
private static native void naInit(String _videoFileName);
private static native int[] naGetVideoResolution();
private static native String naGetVideoCodecName();
private static native String naGetVideoFormatName();
private static native void naClose();
private void showVideoInfo(final File _file) {
String videoFilename = _file.getAbsolutePath();
naInit(videoFilename);
int[] prVideoRes = naGetVideoResolution();
String prVideoCodecName = naGetVideoCodecName();
String prVideoFormatName = naGetVideoFormatName();
naClose();
String displayText = "Video: " + videoFilename + "\n";
displayText += "Video Resolution: " + prVideoRes[0] + "x" + prVideoRes[1] + "\n";
displayText += "Video Codec: " + prVideoCodecName + "\n";
displayText += "Video Format: " + prVideoFormatName + "\n";
text_titlebar_text.setText(displayText);
}
/*the rest of the file deals with UI and other stuff*/
private Context mContext;
public static VideoBrowser self;
/**
* activity life cycle: this part of the source code deals with activity life cycle
*/
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
mContext = this.getApplicationContext();
self = this;
initUI();
}
@Override
protected void onDestroy() {
super.onDestroy();
unbindDisplayEntries();
}
public void unbindDisplayEntries() {
if (displayEntries!=null) {
int l_count = displayEntries.size();
for (int i = 0; i < l_count; ++i) {
IconifiedTextSelected l_its = displayEntries.get(i);
if (l_its != null) {
Drawable l_dr = l_its.getIcon();
if (l_dr != null) {
l_dr.setCallback(null);
l_dr = null;
}
}
}
}
if (l_displayEntries!=null) {
int l_count = l_displayEntries.size();
for (int i = 0; i < l_count; ++i) {
IconifiedTextSelected l_its = l_displayEntries.get(i);
if (l_its != null) {
Drawable l_dr = l_its.getIcon();
if (l_dr != null) {
l_dr.setCallback(null);
l_dr = null;
}
}
}
}
}
/**
* Data: this part of the code deals with data processing
*/
public List<iconifiedtextselected> displayEntries = new ArrayList<iconifiedtextselected>();
public static List<iconifiedtextselected> l_displayEntries = new ArrayList<iconifiedtextselected>();;
/**load images
* this part of code deals with loading of images
*/
private File currentDirectory;
public int media_browser_load_option = 2;
private static int last_media_browser_load_option = 2;
private static int number_of_icons = 0;
private static final String upOneLevel = "..";
LoadVideoTask loadTask;
private void loadVideosFromDirectory(String _dir) {
try {
loadTask = new LoadVideoTask();
loadTask.execute(_dir);
} catch (Exception e) {
Toast.makeText(this, "Load media fail!", Toast.LENGTH_SHORT).show();
}
}
private void getVideosFromDirectoryNonRecurAddParent(File _dir) {
//add the upper one level data
if (_dir.getParent()!=null) {
this.displayEntries.add(new IconifiedTextSelected(
upOneLevel,
getResources().getDrawable(R.drawable.folderback),
false, false, 0));
}
}
private void getVideosFromDirectoryNonRecur(File _dir) {
Drawable folderIcon = this.getResources().getDrawable(R.drawable.normalfolder);
//add the
if (!_dir.isDirectory()) {
return;
}
File[] files = _dir.listFiles();
if (files == null) {
return;
}
Drawable videoIcon = null;
int l_iconType = 0;
for (File currentFile : files) {
if (currentFile.isDirectory()) {
//if it's a directory
this.displayEntries.add(new IconifiedTextSelected(
currentFile.getPath(),
folderIcon, false, false, 0));
} else {
String l_filename = currentFile.getName();
if (checkEndsWithInStringArray(l_filename,
getResources().getStringArray(R.array.fileEndingVideo))) {
if (number_of_icons < 10) {
videoIcon = null;
++number_of_icons;
l_iconType = 22;
} else {
videoIcon = null;
l_iconType = 2;
}
this.displayEntries.add(new IconifiedTextSelected(
currentFile.getPath(),
videoIcon, false, false, l_iconType));
}
}
}
}
private void getVideosFromDirectoryRecur(File _dir) {
Drawable videoIcon = null;
File[] files = _dir.listFiles();
int l_iconType = 2;
if (files == null) {
return;
}
for (File currentFile : files) {
if (currentFile.isDirectory()) {
getVideosFromDirectoryRecur(currentFile);
continue;
} else {
String l_filename = currentFile.getName();
//if it's an image file
if (checkEndsWithInStringArray(l_filename,
getResources().getStringArray(R.array.fileEndingVideo))) {
if (number_of_icons < 10) {
videoIcon = null;
++number_of_icons;
l_iconType = 22;
} else {
videoIcon = null;
l_iconType = 2;
}
this.displayEntries.add(new IconifiedTextSelected(
currentFile.getPath(),
videoIcon, false, false, l_iconType));
}
}
}
}
private void getVideosFromGallery() {
Drawable videoIcon = null;
Uri uri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
String[] projection = {MediaStore.Video.Media.DATA};
Cursor l_cursor = this.managedQuery(uri, projection, null, null, null);
int videoNameColumnIndex;
String videoFilename;
File videoFile;
int l_iconType = 2;
if (l_cursor!=null) {
if (l_cursor.moveToFirst()) {
do {
videoNameColumnIndex = l_cursor.getColumnIndexOrThrow(
MediaStore.Images.Media.DATA);
videoFilename = l_cursor.getString(videoNameColumnIndex);
videoFile = new File(videoFilename);
if (!videoFile.exists()) {
continue;
}
if (number_of_icons <= 10) {
videoIcon = null;
++number_of_icons;
l_iconType = 22;
} else {
videoIcon = null;
l_iconType = 2;
}
this.displayEntries.add(new IconifiedTextSelected(
videoFile.getAbsolutePath(),
videoIcon, false, false, l_iconType));
} while (l_cursor.moveToNext());
}
}
if (l_cursor!=null) {
l_cursor.close();
}
}
private boolean checkEndsWithInStringArray(String checkItsEnd,
String[] fileEndings){
for(String aEnd : fileEndings){
if(checkItsEnd.endsWith(aEnd))
return true;
}
return false;
}
private class LoadVideoTask extends AsyncTask {
@Override
protected void onPreExecute() {
System.gc();
displayEntries.clear();
showDialog(DIALOG_LOAD_MEDIA);
}
@Override
protected Void doInBackground(String... params) {
File l_root = new File(params[0]);
if (l_root.isDirectory()) {
number_of_icons = 0;
currentDirectory = l_root;
if (media_browser_load_option == 0) {
//list all videos in the root directory without going into sub folder
getVideosFromDirectoryNonRecurAddParent(l_root);
getVideosFromDirectoryNonRecur(l_root);
} else if (media_browser_load_option == 1) {
//list all videos in the root folder recursively
getVideosFromDirectoryRecur(l_root);
} else if (media_browser_load_option == 2) {
//list all videos in the gallery
getVideosFromGallery();
}
}
return null;
}
@Override
protected void onPostExecute(Void n) {
refreshUI();
dismissDialog(DIALOG_LOAD_MEDIA);
}
}
/**
* UI: this part of the source code deals with UI
*/
//bottom menu
private int currentFocusedBtn = 1;
private Button btn_bottommenu1;
private Button btn_bottommenu2;
private Button btn_bottommenu3;
//private Button btn_bottommenu4;
//title bar
private TextView text_titlebar_text;
private void initUI() {
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
this.setContentView(R.layout.video_browser);
//title bar
text_titlebar_text = (TextView) findViewById(R.id.titlebar_text);
text_titlebar_text.setText("Click a video to display info");
//bottom menu
int l_btnWidth = this.getWindowManager().getDefaultDisplay().getWidth()/4;
btn_bottommenu1 = (Button) findViewById(R.id.video_browser_btn1);
//btn_bottommenu1 = (ActionMenuButton) findViewById(R.id.main_topsecretimport_btn1);
btn_bottommenu1.setWidth(l_btnWidth);
btn_bottommenu1.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
btn_bottommenu1.setEnabled(false);
btn_bottommenu2.setEnabled(true);
btn_bottommenu3.setEnabled(true);
currentFocusedBtn = 1;
last_list_view_pos = 0;
media_browser_load_option = 2;
last_media_browser_load_option = media_browser_load_option;
loadVideosFromDirectory("/sdcard/");
}
});
btn_bottommenu2 = (Button) findViewById(R.id.video_browser_btn2);
btn_bottommenu2.setWidth(l_btnWidth);
btn_bottommenu2.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
btn_bottommenu1.setEnabled(true);
btn_bottommenu2.setEnabled(false);
btn_bottommenu3.setEnabled(true);
currentFocusedBtn = 2;
last_list_view_pos = 0;
media_browser_load_option = 0;
last_media_browser_load_option = media_browser_load_option;
loadVideosFromDirectory("/sdcard/");
}
});
btn_bottommenu3 = (Button) findViewById(R.id.video_browser_btn3);
btn_bottommenu3.setWidth(l_btnWidth);
btn_bottommenu3.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
btn_bottommenu1.setEnabled(true);
btn_bottommenu2.setEnabled(true);
btn_bottommenu3.setEnabled(false);
currentFocusedBtn = 3;
last_list_view_pos = 0;
media_browser_load_option = 1;
last_media_browser_load_option = media_browser_load_option;
loadVideosFromDirectory("/sdcard/");
}
});
media_browser_load_option = last_media_browser_load_option;
if (media_browser_load_option==2) {
btn_bottommenu1.setEnabled(false);
} else if (media_browser_load_option==0) {
btn_bottommenu2.setEnabled(false);
} else if (media_browser_load_option==1){
btn_bottommenu3.setEnabled(false);
}
loadVideosFromDirectory("/sdcard/");
}
//refresh the UI when the directoryEntries changes
private static int last_list_view_pos = 0;
public void refreshUI() {
int l_btnWidth = this.getWindowManager().getDefaultDisplay().getWidth()/4;
btn_bottommenu1.setWidth(l_btnWidth);
btn_bottommenu2.setWidth(l_btnWidth);
btn_bottommenu3.setWidth(l_btnWidth);
//btn_bottommenu4.setWidth(l_btnWidth);
SlowAdapter itla = new SlowAdapter(this);
itla.setListItems(this.displayEntries);
this.setListAdapter(itla);
getListView().setOnScrollListener(this);
int l_size = this.displayEntries.size();
if (l_size > 50) {
getListView().setFastScrollEnabled(true);
} else {
getListView().setFastScrollEnabled(false);
}
if (l_size > 0) {
if (last_list_view_pos < l_size) {
getListView().setSelection(last_list_view_pos);
} else {
getListView().setSelection(l_size-1);
}
}
registerForContextMenu(getListView());
}
@Override
public void onConfigurationChanged (Configuration newConfig) {
super.onConfigurationChanged(newConfig);
refreshUI();
}
static final int DIALOG_LOAD_MEDIA = 1;
static final int DIALOG_HELP = 2;
@Override
protected Dialog onCreateDialog(int id) {
switch(id) {
case DIALOG_LOAD_MEDIA:
ProgressDialog dialog = new ProgressDialog(this);
dialog.setTitle("Load Files");
dialog.setMessage("Please wait while loading...");
dialog.setIndeterminate(true);
dialog.setCancelable(true);
return dialog;
default:
return null;
}
}
/**
* scroll events methods: this part of the source code contain the control source code
* for handling scroll events
*/
private boolean mBusy = false;
private void disableButtons() {
btn_bottommenu1.setEnabled(false);
btn_bottommenu2.setEnabled(false);
btn_bottommenu3.setEnabled(false);
}
private void enableButtons() {
if (currentFocusedBtn!=1) {
btn_bottommenu1.setEnabled(true);
}
if (currentFocusedBtn!=2) {
btn_bottommenu2.setEnabled(true);
}
if (currentFocusedBtn!=3) {
btn_bottommenu3.setEnabled(true);
}
}
public void onScroll(AbsListView view, int firstVisibleItem,
int visibleItemCount, int totalItemCount) {
last_list_view_pos = view.getFirstVisiblePosition();
}
//private boolean mSaveMemory = false;
public void onScrollStateChanged(AbsListView view, int scrollState) {
switch (scrollState) {
case OnScrollListener.SCROLL_STATE_IDLE:
enableButtons();
mBusy = false;
int first = view.getFirstVisiblePosition();
int count = view.getChildCount();
int l_releaseTarget;
for (int i=0; i/if outofmemory, we try to clean up 10 view image resources,
//and try again
for (int j = 0; j < 10; ++j) {
l_releaseTarget = first - count - j;
if (l_releaseTarget > 0) {
IconifiedTextSelected l_its = displayEntries.get(l_releaseTarget);
IconifiedTextSelectedView l_itsv = (IconifiedTextSelectedView)
this.getListView().getChildAt(l_releaseTarget);
if (l_itsv!=null) {
l_itsv.setIcon(null);
}
if (l_its != null) {
Drawable l_dr = l_its.getIcon();
l_its.setIcon(null);
if (l_dr != null) {
l_dr.setCallback(null);
l_dr = null;
}
}
}
}
System.gc();
//after clean up, we try again
if (l_type == 1) {
l_icon = null;
} else if (l_type == 2) {
l_icon = null;
}
}
this.displayEntries.get(first+i).setIcon(l_icon);
if (l_icon != null) {
t.setIcon(l_icon);
t.setTag(null);
}
}
}
//System.gc();
break;
case OnScrollListener.SCROLL_STATE_TOUCH_SCROLL:
disableButtons();
mBusy = true;
break;
case OnScrollListener.SCROLL_STATE_FLING:
disableButtons();
mBusy = true;
break;
}
}
/**
* List item click action
*/
private File currentFile;
@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
super.onListItemClick(l, v, position, id);
last_list_view_pos = position;
String selectedFileOrDirName = this.displayEntries.get((int)id).getText();
if (selectedFileOrDirName.equals(upOneLevel)) {
if (this.currentDirectory.getParent()!=null) {
last_list_view_pos = 0;
browseTo(this.currentDirectory.getParentFile());
}
} else {
File l_clickedFile = new File(this.displayEntries.get((int)id).getText());
if (l_clickedFile != null) {
if (l_clickedFile.isDirectory()) {
last_list_view_pos = 0;
browseTo(l_clickedFile);
} else {
showVideoInfo(l_clickedFile);
}
}
}
}
private void browseTo(final File _dir) {
if (_dir.isDirectory()) {
this.currentDirectory = _dir;
loadVideosFromDirectory(_dir.getAbsolutePath());
}
}
/**
* Slow adapter: this part of the code implements the list adapter
* Will not bind views while the list is scrolling
*/
private class SlowAdapter extends BaseAdapter {
/** Remember our context so we can use it when constructing views. */
private Context mContext;
private List<iconifiedtextselected> mItems = new ArrayList<iconifiedtextselected>();
public SlowAdapter(Context context) {
mContext = context;
}
public void setListItems(List<iconifiedtextselected> lit)
{ mItems = lit; }
/** @return The number of items in the */
public int getCount() { return mItems.size(); }
public Object getItem(int position)
{ return mItems.get(position); }
/** Use the array index as a unique id. */
public long getItemId(int position) {
return position;
}
/** @param convertView The old view to overwrite, if one is passed
* @returns a IconifiedTextSelectedView that holds wraps around an IconifiedText */
public View getView(int position, View convertView, ViewGroup parent) {
IconifiedTextSelectedView btv;
if (convertView == null) {
btv = new IconifiedTextSelectedView(mContext, mItems.get(position));
} else { // Reuse/Overwrite the View passed
// We are assuming(!) that it is castable!
btv = (IconifiedTextSelectedView) convertView;
btv.setText(mItems.get(position).getText());
}
if (position==0) {
if (VideoBrowser.self.media_browser_load_option==0) {
btv.setIcon(R.drawable.folderback);
} else if (mItems.get(0).getIcon()!=null) {
btv.setIcon(mItems.get(position).getIcon());
} else {
btv.setIcon(R.drawable.video);
}
}
//in busy mode
else if (mBusy){
//if icon is NULL: the icon is not loaded yet; load default icon
if (mItems.get(position).getIcon()==null) {
btv.setIcon(R.drawable.video);
//mark this view, indicates the icon is not loaded
btv.setTag(this);
} else {
//if icon is not null, just display the icon
btv.setIcon(mItems.get(position).getIcon());
//mark this view, indicates the icon is loaded
btv.setTag(null);
}
} else {
//if not busy
Drawable d = mItems.get(position).getIcon();
if (d == null) {
//icon is not loaded, load now
btv.setIcon(R.drawable.video);
btv.setTag(this);
} else {
btv.setIcon(mItems.get(position).getIcon());
btv.setTag(null);
}
}
return btv;
}
}
</iconifiedtextselected></iconifiedtextselected></iconifiedtextselected></iconifiedtextselected></iconifiedtextselected></iconifiedtextselected></iconifiedtextselected>}
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