mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-12-26 18:20:44 +00:00
Code Issues 1 Projects Releases Wiki Activity

Better handling of state tracking in the UI. It now tracks what gst does, instead of just guessing from the buttons the user pressed.

Browse source
This commit is contained in:
Xavi Artigas 2012-09-21 14:29:11 +02:00
parent 81bb469d72
commit a11dffbbc1
2 changed files with 39 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
gst-sdk/tutorials/android-tutorial-1/jni/tutorial-1.c
View file

@ -40,6 +40,7 @@ static JavaVM *java_vm;
static jfieldID custom_data_field_id;
static jmethodID set_message_method_id;
static jmethodID set_current_position_method_id;
static jmethodID set_current_state_method_id;
static jmethodID on_gstreamer_initialized_method_id;
/*
@ -92,7 +93,7 @@ static void set_ui_message (const gchar *message, CustomData *data) {
static void set_current_ui_position (gint position, gint duration, CustomData *data) {
JNIEnv *env = get_jni_env ();
GST_DEBUG ("Setting current position/duration to: %d / %d (ms)", position, duration);
// GST_DEBUG ("Setting current position/duration to: %d / %d (ms)", position, duration);
(*env)->CallVoidMethod (env, data->app, set_current_position_method_id, position, duration);
if ((*env)->ExceptionCheck (env)) {
GST_ERROR ("Failed to call Java method");
@ -151,16 +152,22 @@ static void eos_cb (GstBus *bus, GstMessage *msg, CustomData *data) {
}
static void state_changed_cb (GstBus *bus, GstMessage *msg, CustomData *data) {
JNIEnv *env = get_jni_env ();
GstState old_state, new_state, pending_state;
gst_message_parse_state_changed (msg, &old_state, &new_state, &pending_state);
/* Only pay attention to messages coming from the pipeline, not its children */
if (GST_MESSAGE_SRC (msg) == GST_OBJECT (data->pipeline)) {
set_ui_message (gst_element_state_get_name (new_state), data);
data->state = new_state;
if (data->state >= GST_STATE_PAUSED && GST_CLOCK_TIME_IS_VALID (data->desired_position)) {
execute_seek (data->desired_position, data);
data->desired_position = GST_CLOCK_TIME_NONE;
}
GST_DEBUG ("State changed to %s, notifying application", gst_element_state_get_name(new_state));
(*env)->CallVoidMethod (env, data->app, set_current_state_method_id, new_state);
if ((*env)->ExceptionCheck (env)) {
GST_ERROR ("Failed to call Java method");
(*env)->ExceptionClear (env);
}
}
}
@ -303,8 +310,11 @@ jboolean gst_class_init (JNIEnv* env, jclass klass) {
GST_DEBUG ("The MethodID for the setCurrentPosition method is %p", set_current_position_method_id);
on_gstreamer_initialized_method_id = (*env)->GetMethodID (env, klass, "onGStreamerInitialized", "()V");
GST_DEBUG ("The MethodID for the onGStreamerInitialized method is %p", on_gstreamer_initialized_method_id);
set_current_state_method_id = (*env)->GetMethodID (env, klass, "setCurrentState", "(I)V");
GST_DEBUG ("The MethodID for the setCurrentState method is %p", set_current_state_method_id);
if (!custom_data_field_id || !set_message_method_id || !set_current_position_method_id || ! on_gstreamer_initialized_method_id) {
if (!custom_data_field_id || !set_message_method_id || !set_current_position_method_id ||
!on_gstreamer_initialized_method_id || !set_current_state_method_id) {
GST_ERROR ("The calling class does not implement all necessary interface methods");
return JNI_FALSE;
}

31
gst-sdk/tutorials/android-tutorial-1/src/com/gst_sdk_tutorials/tutorial_1/Tutorial1.java
View file

@ -71,7 +71,6 @@ public class Tutorial1 extends Activity implements SurfaceHolder.Callback, OnSee
play.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
nativePlay();
playing = true;
}
});
@ -79,7 +78,6 @@ public class Tutorial1 extends Activity implements SurfaceHolder.Callback, OnSee
pause.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
nativePause();
playing = false;
}
});
@ -107,6 +105,7 @@ public class Tutorial1 extends Activity implements SurfaceHolder.Callback, OnSee
super.onDestroy();
}
/* Called from native code */
private void setMessage(final String message) {
final TextView tv = (TextView) this.findViewById(R.id.textview_message);
runOnUiThread (new Runnable() {
@ -116,17 +115,18 @@ public class Tutorial1 extends Activity implements SurfaceHolder.Callback, OnSee
});
}
/* Called from native code */
private void onGStreamerInitialized () {
if (initialization_data != null) {
playing = initialization_data.getBoolean("playing");
boolean should_play = initialization_data.getBoolean("playing");
int milliseconds = initialization_data.getInt("position");
Log.i ("GStreamer", "Restoring state, playing:" + playing + " position:" + milliseconds + " ms.");
Log.i ("GStreamer", "Restoring state, playing:" + should_play + " position:" + milliseconds + " ms.");
/* Actually, move to one millisecond in the future. Otherwise, due to rounding errors between the
* milliseconds used here and the nanoseconds used by GStreamer, we would be jumping a bit behind
* where we were before. This, combined with seeking to keyframe positions, would skip one keyframe
* backwards on each iteration. */
nativeSetPosition(milliseconds + 1);
if (playing) {
if (should_play) {
nativePlay();
} else {
nativePause();
@ -136,6 +136,7 @@ public class Tutorial1 extends Activity implements SurfaceHolder.Callback, OnSee
}
}
/* Called from native code */
private void setCurrentPosition(final int position, final int duration) {
final TextView tv = (TextView) this.findViewById(R.id.textview_time);
final SeekBar sb = (SeekBar) this.findViewById(R.id.seek_bar);
@ -153,6 +154,26 @@ public class Tutorial1 extends Activity implements SurfaceHolder.Callback, OnSee
this.duration = duration;
}
/* Called from native code */
private void setCurrentState (int state) {
Log.d ("GStreamer", "State has changed to " + state);
switch (state) {
case 1:
setMessage ("NULL");
break;
case 2:
setMessage ("READY");
break;
case 3:
setMessage ("PAUSED");
break;
case 4:
setMessage ("PLAYING");
break;
}
playing = (state == 4);
}
static {
System.loadLibrary("gstreamer_android");
System.loadLibrary("tutorial-1");