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拿掉無用的seek to功能

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This commit is contained in:
Barney 2022-08-08 14:34:48 +08:00
parent 3e6d7e9e1c
commit 62503432b0
2 changed files with 328 additions and 479 deletions
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2
.idea/misc.xml
View File

@ -16,5 +16,5 @@
</option> </option>
</component> </component>
<component name="ExternalStorageConfigurationManager" enabled="true" /> <component name="ExternalStorageConfigurationManager" enabled="true" />
<component name="ProjectRootManager" version="2" languageLevel="JDK_16_PREVIEW" project-jdk-name="16" project-jdk-type="JavaSDK" /> <component name="ProjectRootManager" version="2" languageLevel="JDK_16" project-jdk-name="16" project-jdk-type="JavaSDK" />
</project> </project>

425
gstreamer_player/jni/gst_player.c
View File

@ -24,13 +24,8 @@ GST_DEBUG_CATEGORY_STATIC (debug_category);
# define SET_CUSTOM_DATA(env, thiz, fieldID, data) (*env)->SetLongField (env, thiz, fieldID, (jlong)(jint)data) # define SET_CUSTOM_DATA(env, thiz, fieldID, data) (*env)->SetLongField (env, thiz, fieldID, (jlong)(jint)data)
#endif #endif
/* Do not allow seeks to be performed closer than this distance. It is visually useless, and will probably
* confuse some demuxers. */
#define SEEK_MIN_DELAY (500 * GST_MSECOND)
/* Structure to contain all our information, so we can pass it to callbacks */ /* Structure to contain all our information, so we can pass it to callbacks */
typedef struct _CustomData typedef struct _CustomData {
{
jobject app; /* Application instance, used to call its methods. A global reference is kept. */ jobject app; /* Application instance, used to call its methods. A global reference is kept. */
GstElement *pipeline; /* The running pipeline */ GstElement *pipeline; /* The running pipeline */
GMainContext *context; /* GLib context used to run the main loop */ GMainContext *context; /* GLib context used to run the main loop */
@ -39,15 +34,11 @@ typedef struct _CustomData
ANativeWindow *native_window; /* The Android native window where video will be rendered */ ANativeWindow *native_window; /* The Android native window where video will be rendered */
GstState state; /* Current pipeline state */ GstState state; /* Current pipeline state */
GstState target_state; /* Desired pipeline state, to be set once buffering is complete */ GstState target_state; /* Desired pipeline state, to be set once buffering is complete */
gint64 duration; /* Cached clip duration */
gint64 desired_position; /* Position to seek to, once the pipeline is running */
GstClockTime last_seek_time; /* For seeking overflow prevention (throttling) */
gboolean is_live; /* Live streams do not use buffering */ gboolean is_live; /* Live streams do not use buffering */
} CustomData; } CustomData;
/* playbin2 flags */ /* playbin2 flags */
typedef enum typedef enum {
{
GST_PLAY_FLAG_TEXT = (1 << 2) /* We want subtitle output */ GST_PLAY_FLAG_TEXT = (1 << 2) /* We want subtitle output */
} GstPlayFlags; } GstPlayFlags;
@ -57,7 +48,6 @@ static pthread_key_t current_jni_env;
static JavaVM *java_vm; static JavaVM *java_vm;
static jfieldID custom_data_field_id; static jfieldID custom_data_field_id;
static jmethodID set_message_method_id; static jmethodID set_message_method_id;
static jmethodID set_current_position_method_id;
static jmethodID on_gstreamer_initialized_method_id; static jmethodID on_gstreamer_initialized_method_id;
static jmethodID on_media_size_changed_method_id; static jmethodID on_media_size_changed_method_id;
@ -66,16 +56,16 @@ static jmethodID on_media_size_changed_method_id;
*/ */
/* Register this thread with the VM */ /* Register this thread with the VM */
static JNIEnv *attach_current_thread (void){ static JNIEnv *attach_current_thread(void) {
JNIEnv *env; JNIEnv *env;
JavaVMAttachArgs args; JavaVMAttachArgs args;
GST_DEBUG ("Attaching thread %p", g_thread_self ()); GST_DEBUG ("Attaching thread %p", g_thread_self());
args.version = JNI_VERSION_1_4; args.version = JNI_VERSION_1_4;
args.name = NULL; args.name = NULL;
args.group = NULL; args.group = NULL;
if ((*java_vm)->AttachCurrentThread (java_vm, &env, &args) < 0) { if ((*java_vm)->AttachCurrentThread(java_vm, &env, &args) < 0) {
GST_ERROR ("Failed to attach current thread"); GST_ERROR ("Failed to attach current thread");
return NULL; return NULL;
} }
@ -84,233 +74,132 @@ static JNIEnv *attach_current_thread (void){
} }
/* Unregister this thread from the VM */ /* Unregister this thread from the VM */
static void detach_current_thread (void *env) { static void detach_current_thread(void *env) {
GST_DEBUG ("Detaching thread %p", g_thread_self ()); GST_DEBUG ("Detaching thread %p", g_thread_self());
(*java_vm)->DetachCurrentThread (java_vm); (*java_vm)->DetachCurrentThread(java_vm);
} }
/* Retrieve the JNI environment for this thread */ /* Retrieve the JNI environment for this thread */
static JNIEnv *get_jni_env (void) { static JNIEnv *get_jni_env(void) {
JNIEnv *env; JNIEnv *env;
if ((env = pthread_getspecific (current_jni_env)) == NULL) { if ((env = pthread_getspecific(current_jni_env)) == NULL) {
env = attach_current_thread (); env = attach_current_thread();
pthread_setspecific (current_jni_env, env); pthread_setspecific(current_jni_env, env);
} }
return env; return env;
} }
/* Change the content of the UI's TextView */ /* Change the content of the UI's TextView */
static void set_ui_message (const gchar * message, CustomData * data) { static void set_ui_message(const gchar *message, CustomData *data) {
JNIEnv *env = get_jni_env (); JNIEnv *env = get_jni_env();
GST_DEBUG ("Setting message to: %s", message); GST_DEBUG ("Setting message to: %s", message);
jstring jmessage = (*env)->NewStringUTF (env, message); jstring jmessage = (*env)->NewStringUTF(env, message);
(*env)->CallVoidMethod (env, data->app, set_message_method_id, jmessage); (*env)->CallVoidMethod(env, data->app, set_message_method_id, jmessage);
if ((*env)->ExceptionCheck (env)) { if ((*env)->ExceptionCheck(env)) {
GST_ERROR ("Failed to call Java method"); GST_ERROR ("Failed to call Java method");
(*env)->ExceptionClear (env); (*env)->ExceptionClear(env);
} }
(*env)->DeleteLocalRef (env, jmessage); (*env)->DeleteLocalRef(env, jmessage);
}
/* Tell the application what is the current position and clip duration */
static void set_current_ui_position (gint position, gint duration, CustomData * data) {
JNIEnv *env = get_jni_env ();
(*env)->CallVoidMethod (env, data->app, set_current_position_method_id,
position, duration);
if ((*env)->ExceptionCheck (env)) {
GST_ERROR ("Failed to call Java method");
(*env)->ExceptionClear (env);
}
}
/* If we have pipeline and it is running, query the current position and clip duration and inform
* the application */
static gboolean refresh_ui (CustomData * data) {
gint64 current = -1;
gint64 position;
/* We do not want to update anything unless we have a working pipeline in the PAUSED or PLAYING state */
if (!data || !data->pipeline || data->state < GST_STATE_PAUSED)
return TRUE;
/* If we didn't know it yet, query the stream duration */
if (!GST_CLOCK_TIME_IS_VALID (data->duration)) {
if (!gst_element_query_duration (data->pipeline, GST_FORMAT_TIME,
&data->duration)) {
/*GST_WARNING
("Could not query current duration (normal for still pictures)");*/
data->duration = 0;
}
}
if (!gst_element_query_position (data->pipeline, GST_FORMAT_TIME, &position)) {
/*GST_WARNING
("Could not query current position (normal for still pictures)");*/
position = 0;
}
/* Java expects these values in milliseconds, and GStreamer provides nanoseconds */
set_current_ui_position (position / GST_MSECOND, data->duration / GST_MSECOND,
data);
return TRUE;
}
/* Forward declaration for the delayed seek callback */
static gboolean delayed_seek_cb (CustomData * data);
/* Perform seek, if we are not too close to the previous seek. Otherwise, schedule the seek for
* some time in the future. */
static void execute_seek (gint64 desired_position, CustomData * data) {
gint64 diff;
if (desired_position == GST_CLOCK_TIME_NONE)
return;
diff = gst_util_get_timestamp () - data->last_seek_time;
if (GST_CLOCK_TIME_IS_VALID (data->last_seek_time) && diff < SEEK_MIN_DELAY) {
/* The previous seek was too close, delay this one */
GSource *timeout_source;
if (data->desired_position == GST_CLOCK_TIME_NONE) {
/* There was no previous seek scheduled. Setup a timer for some time in the future */
timeout_source =
g_timeout_source_new ((SEEK_MIN_DELAY - diff) / GST_MSECOND);
g_source_set_callback (timeout_source, (GSourceFunc) delayed_seek_cb,
data, NULL);
g_source_attach (timeout_source, data->context);
g_source_unref (timeout_source);
}
/* Update the desired seek position. If multiple petitions are received before it is time
* to perform a seek, only the last one is remembered. */
data->desired_position = desired_position;
GST_DEBUG ("Throttling seek to %" GST_TIME_FORMAT ", will be in %"
GST_TIME_FORMAT, GST_TIME_ARGS (desired_position),
GST_TIME_ARGS (SEEK_MIN_DELAY - diff));
} else {
/* Perform the seek now */
GST_DEBUG ("Seeking to %" GST_TIME_FORMAT,
GST_TIME_ARGS (desired_position));
data->last_seek_time = gst_util_get_timestamp ();
gst_element_seek_simple (data->pipeline, GST_FORMAT_TIME,
GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_KEY_UNIT, desired_position);
data->desired_position = GST_CLOCK_TIME_NONE;
}
}
/* Delayed seek callback. This gets called by the timer setup in the above function. */
static gboolean delayed_seek_cb (CustomData * data) {
GST_DEBUG ("Doing delayed seek to %" GST_TIME_FORMAT,
GST_TIME_ARGS (data->desired_position));
execute_seek (data->desired_position, data);
return FALSE;
} }
/* Retrieve errors from the bus and show them on the UI */ /* Retrieve errors from the bus and show them on the UI */
static void error_cb (GstBus * bus, GstMessage * msg, CustomData * data) { static void error_cb(GstBus *bus, GstMessage *msg, CustomData *data) {
GError *err; GError *err;
gchar *debug_info; gchar *debug_info;
gchar *message_string; gchar *message_string;
gst_message_parse_error (msg, &err, &debug_info); gst_message_parse_error(msg, &err, &debug_info);
message_string = message_string =
g_strdup_printf ("Error received from element %s: %s", g_strdup_printf("Error received from element %s: %s",
GST_OBJECT_NAME (msg->src), err->message); GST_OBJECT_NAME (msg->src), err->message);
g_clear_error (&err); g_clear_error(&err);
g_free (debug_info); g_free(debug_info);
set_ui_message (message_string, data); set_ui_message(message_string, data);
g_free (message_string); g_free(message_string);
data->target_state = GST_STATE_NULL; data->target_state = GST_STATE_NULL;
gst_element_set_state (data->pipeline, GST_STATE_NULL); gst_element_set_state(data->pipeline, GST_STATE_NULL);
} }
/* Called when the End Of the Stream is reached. Just move to the beginning of the media and pause. */ /* Called when the End Of the Stream is reached. Just move to the beginning of the media and pause. */
static void eos_cb (GstBus * bus, GstMessage * msg, CustomData * data) { static void eos_cb(GstBus *bus, GstMessage *msg, CustomData *data) {
data->target_state = GST_STATE_PAUSED; data->target_state = GST_STATE_PAUSED;
data->is_live |= data->is_live |= (gst_element_set_state(data->pipeline,
(gst_element_set_state (data->pipeline,
GST_STATE_PAUSED) == GST_STATE_CHANGE_NO_PREROLL); GST_STATE_PAUSED) == GST_STATE_CHANGE_NO_PREROLL);
execute_seek (0, data);
}
/* Called when the duration of the media changes. Just mark it as unknown, so we re-query it in the next UI refresh. */
static void duration_cb (GstBus * bus, GstMessage * msg, CustomData * data) {
data->duration = GST_CLOCK_TIME_NONE;
} }
/* Called when buffering messages are received. We inform the UI about the current buffering level and /* Called when buffering messages are received. We inform the UI about the current buffering level and
* keep the pipeline paused until 100% buffering is reached. At that point, set the desired state. */ * keep the pipeline paused until 100% buffering is reached. At that point, set the desired state. */
static void buffering_cb (GstBus * bus, GstMessage * msg, CustomData * data) { static void buffering_cb(GstBus *bus, GstMessage *msg, CustomData *data) {
gint percent; gint percent;
if (data->is_live) if (data->is_live)
return; return;
gst_message_parse_buffering (msg, &percent); gst_message_parse_buffering(msg, &percent);
if (percent < 100 && data->target_state >= GST_STATE_PAUSED) { if (percent < 100 && data->target_state >= GST_STATE_PAUSED) {
gchar *message_string = g_strdup_printf ("Buffering %d%%", percent); gchar *message_string = g_strdup_printf("Buffering %d%%", percent);
gst_element_set_state (data->pipeline, GST_STATE_PAUSED); gst_element_set_state(data->pipeline, GST_STATE_PAUSED);
set_ui_message (message_string, data); set_ui_message(message_string, data);
g_free (message_string); g_free(message_string);
} else if (data->target_state >= GST_STATE_PLAYING) { } else if (data->target_state >= GST_STATE_PLAYING) {
gst_element_set_state (data->pipeline, GST_STATE_PLAYING); gst_element_set_state(data->pipeline, GST_STATE_PLAYING);
} else if (data->target_state >= GST_STATE_PAUSED) { } else if (data->target_state >= GST_STATE_PAUSED) {
set_ui_message ("Buffering complete", data); set_ui_message("Buffering complete", data);
} }
} }
/* Called when the clock is lost */ /* Called when the clock is lost */
static void clock_lost_cb (GstBus * bus, GstMessage * msg, CustomData * data) { static void clock_lost_cb(GstBus *bus, GstMessage *msg, CustomData *data) {
if (data->target_state >= GST_STATE_PLAYING) { if (data->target_state >= GST_STATE_PLAYING) {
gst_element_set_state (data->pipeline, GST_STATE_PAUSED); gst_element_set_state(data->pipeline, GST_STATE_PAUSED);
gst_element_set_state (data->pipeline, GST_STATE_PLAYING); gst_element_set_state(data->pipeline, GST_STATE_PLAYING);
} }
} }
/* Retrieve the video sink's Caps and tell the application about the media size */ /* Retrieve the video sink's Caps and tell the application about the media size */
static void check_media_size (CustomData * data) { static void check_media_size(CustomData *data) {
JNIEnv *env = get_jni_env (); JNIEnv *env = get_jni_env();
GstElement *video_sink; GstElement *video_sink;
GstPad *video_sink_pad; GstPad *video_sink_pad;
GstCaps *caps; GstCaps *caps;
GstVideoInfo info; GstVideoInfo info;
/* Retrieve the Caps at the entrance of the video sink */ /* Retrieve the Caps at the entrance of the video sink */
g_object_get (data->pipeline, "video-sink", &video_sink, NULL); g_object_get(data->pipeline, "video-sink", &video_sink, NULL);
video_sink_pad = gst_element_get_static_pad (video_sink, "sink"); video_sink_pad = gst_element_get_static_pad(video_sink, "sink");
caps = gst_pad_get_current_caps (video_sink_pad); caps = gst_pad_get_current_caps(video_sink_pad);
if (gst_video_info_from_caps (&info, caps)) { if (gst_video_info_from_caps(&info, caps)) {
info.width = info.width * info.par_n / info.par_d; info.width = info.width * info.par_n / info.par_d;
GST_DEBUG ("Media size is %dx%d, notifying application", info.width, GST_DEBUG ("Media size is %dx%d, notifying application", info.width,
info.height); info.height);
(*env)->CallVoidMethod (env, data->app, on_media_size_changed_method_id, (*env)->CallVoidMethod(env, data->app, on_media_size_changed_method_id,
(jint) info.width, (jint) info.height); (jint) info.width, (jint) info.height);
if ((*env)->ExceptionCheck (env)) { if ((*env)->ExceptionCheck(env)) {
GST_ERROR ("Failed to call Java method"); GST_ERROR ("Failed to call Java method");
(*env)->ExceptionClear (env); (*env)->ExceptionClear(env);
} }
} }
gst_caps_unref (caps); gst_caps_unref(caps);
gst_object_unref (video_sink_pad); gst_object_unref(video_sink_pad);
gst_object_unref (video_sink); gst_object_unref(video_sink);
} }
/* Notify UI about pipeline state changes */ /* Notify UI about pipeline state changes */
static void state_changed_cb (GstBus * bus, GstMessage * msg, CustomData * data) { static void state_changed_cb(GstBus *bus, GstMessage *msg, CustomData *data) {
GstState old_state, new_state, pending_state; GstState old_state, new_state, pending_state;
gst_message_parse_state_changed (msg, &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 */ /* Only pay attention to messages coming from the pipeline, not its children */
if (GST_MESSAGE_SRC (msg) == GST_OBJECT (data->pipeline)) { if (GST_MESSAGE_SRC (msg) == GST_OBJECT (data->pipeline)) {
data->state = new_state; data->state = new_state;
gchar *message = g_strdup_printf ("State changed to %s", gchar *message = g_strdup_printf("State changed to %s",
gst_element_state_get_name (new_state)); gst_element_state_get_name(new_state));
set_ui_message (message, data); set_ui_message(message, data);
g_free (message); g_free(message);
if (new_state == GST_STATE_NULL || new_state == GST_STATE_READY) if (new_state == GST_STATE_NULL || new_state == GST_STATE_READY)
data->is_live = FALSE; data->is_live = FALSE;
@ -318,39 +207,35 @@ static void state_changed_cb (GstBus * bus, GstMessage * msg, CustomData * data)
/* The Ready to Paused state change is particularly interesting: */ /* The Ready to Paused state change is particularly interesting: */
if (old_state == GST_STATE_READY && new_state == GST_STATE_PAUSED) { if (old_state == GST_STATE_READY && new_state == GST_STATE_PAUSED) {
/* By now the sink already knows the media size */ /* By now the sink already knows the media size */
check_media_size (data); check_media_size(data);
/* If there was a scheduled seek, perform it now that we have moved to the Paused state */
if (GST_CLOCK_TIME_IS_VALID (data->desired_position))
execute_seek (data->desired_position, data);
} }
} }
} }
/* Check if all conditions are met to report GStreamer as initialized. /* Check if all conditions are met to report GStreamer as initialized.
* These conditions will change depending on the application */ * These conditions will change depending on the application */
static void check_initialization_complete (CustomData * data) { static void check_initialization_complete(CustomData *data) {
JNIEnv *env = get_jni_env (); JNIEnv *env = get_jni_env();
if (!data->initialized && data->native_window && data->main_loop) { if (!data->initialized && data->native_window && data->main_loop) {
GST_DEBUG GST_DEBUG
("Initialization complete, notifying application. native_window:%p main_loop:%p", ("Initialization complete, notifying application. native_window:%p main_loop:%p",
data->native_window, data->main_loop); data->native_window, data->main_loop);
/* The main loop is running and we received a native window, inform the sink about it */ /* The main loop is running and we received a native window, inform the sink about it */
gst_video_overlay_set_window_handle (GST_VIDEO_OVERLAY (data->pipeline), gst_video_overlay_set_window_handle(GST_VIDEO_OVERLAY (data->pipeline),
(guintptr) data->native_window); (guintptr) data->native_window);
(*env)->CallVoidMethod (env, data->app, on_gstreamer_initialized_method_id); (*env)->CallVoidMethod(env, data->app, on_gstreamer_initialized_method_id);
if ((*env)->ExceptionCheck (env)) { if ((*env)->ExceptionCheck(env)) {
GST_ERROR ("Failed to call Java method"); GST_ERROR ("Failed to call Java method");
(*env)->ExceptionClear (env); (*env)->ExceptionClear(env);
} }
data->initialized = TRUE; data->initialized = TRUE;
} }
} }
/* Main method for the native code. This is executed on its own thread. */ /* Main method for the native code. This is executed on its own thread. */
static void *app_function (void *userdata) { static void *app_function(void *userdata) {
JavaVMAttachArgs args; JavaVMAttachArgs args;
GstBus *bus; GstBus *bus;
CustomData *data = (CustomData *) userdata; CustomData *data = (CustomData *) userdata;
@ -362,70 +247,62 @@ static void *app_function (void *userdata) {
GST_DEBUG ("Creating pipeline in CustomData at %p", data); GST_DEBUG ("Creating pipeline in CustomData at %p", data);
/* Create our own GLib Main Context and make it the default one */ /* Create our own GLib Main Context and make it the default one */
data->context = g_main_context_new (); data->context = g_main_context_new();
g_main_context_push_thread_default (data->context); g_main_context_push_thread_default(data->context);
/* Build pipeline */ /* Build pipeline */
data->pipeline = gst_parse_launch ("playbin", &error); data->pipeline = gst_parse_launch("playbin", &error);
if (error) { if (error) {
gchar *message = gchar *message =
g_strdup_printf ("Unable to build pipeline: %s", error->message); g_strdup_printf("Unable to build pipeline: %s", error->message);
g_clear_error (&error); g_clear_error(&error);
set_ui_message (message, data); set_ui_message(message, data);
g_free (message); g_free(message);
return NULL; return NULL;
} }
/* Disable subtitles */ /* Disable subtitles */
g_object_get (data->pipeline, "flags", &flags, NULL); g_object_get(data->pipeline, "flags", &flags, NULL);
flags &= ~GST_PLAY_FLAG_TEXT; flags &= ~GST_PLAY_FLAG_TEXT;
g_object_set (data->pipeline, "flags", flags, NULL); g_object_set(data->pipeline, "flags", flags, NULL);
/* Set the pipeline to READY, so it can already accept a window handle, if we have one */ /* Set the pipeline to READY, so it can already accept a window handle, if we have one */
data->target_state = GST_STATE_READY; data->target_state = GST_STATE_READY;
gst_element_set_state (data->pipeline, GST_STATE_READY); gst_element_set_state(data->pipeline, GST_STATE_READY);
/* Instruct the bus to emit signals for each received message, and connect to the interesting signals */ /* Instruct the bus to emit signals for each received message, and connect to the interesting signals */
bus = gst_element_get_bus (data->pipeline); bus = gst_element_get_bus(data->pipeline);
bus_source = gst_bus_create_watch (bus); bus_source = gst_bus_create_watch(bus);
g_source_set_callback (bus_source, (GSourceFunc) gst_bus_async_signal_func, g_source_set_callback(bus_source, (GSourceFunc) gst_bus_async_signal_func,
NULL, NULL); NULL, NULL);
g_source_attach (bus_source, data->context); g_source_attach(bus_source, data->context);
g_source_unref (bus_source); g_source_unref(bus_source);
g_signal_connect (G_OBJECT (bus), "message::error", (GCallback) error_cb, g_signal_connect (G_OBJECT(bus), "message::error", (GCallback) error_cb,
data); data);
g_signal_connect (G_OBJECT (bus), "message::eos", (GCallback) eos_cb, data); g_signal_connect (G_OBJECT(bus), "message::eos", (GCallback) eos_cb, data);
g_signal_connect (G_OBJECT (bus), "message::state-changed", g_signal_connect (G_OBJECT(bus), "message::state-changed",
(GCallback) state_changed_cb, data); (GCallback) state_changed_cb, data);
g_signal_connect (G_OBJECT (bus), "message::duration", g_signal_connect (G_OBJECT(bus), "message::buffering",
(GCallback) duration_cb, data);
g_signal_connect (G_OBJECT (bus), "message::buffering",
(GCallback) buffering_cb, data); (GCallback) buffering_cb, data);
g_signal_connect (G_OBJECT (bus), "message::clock-lost", g_signal_connect (G_OBJECT(bus), "message::clock-lost",
(GCallback) clock_lost_cb, data); (GCallback) clock_lost_cb, data);
gst_object_unref (bus); gst_object_unref(bus);
/* Register a function that GLib will call 4 times per second */
timeout_source = g_timeout_source_new (250);
g_source_set_callback (timeout_source, (GSourceFunc) refresh_ui, data, NULL);
g_source_attach (timeout_source, data->context);
g_source_unref (timeout_source);
/* Create a GLib Main Loop and set it to run */ /* Create a GLib Main Loop and set it to run */
GST_DEBUG ("Entering main loop... (CustomData:%p)", data); GST_DEBUG ("Entering main loop... (CustomData:%p)", data);
data->main_loop = g_main_loop_new (data->context, FALSE); data->main_loop = g_main_loop_new(data->context, FALSE);
check_initialization_complete (data); check_initialization_complete(data);
g_main_loop_run (data->main_loop); g_main_loop_run(data->main_loop);
GST_DEBUG ("Exited main loop"); GST_DEBUG ("Exited main loop");
g_main_loop_unref (data->main_loop); g_main_loop_unref(data->main_loop);
data->main_loop = NULL; data->main_loop = NULL;
/* Free resources */ /* Free resources */
g_main_context_pop_thread_default (data->context); g_main_context_pop_thread_default(data->context);
g_main_context_unref (data->context); g_main_context_unref(data->context);
data->target_state = GST_STATE_NULL; data->target_state = GST_STATE_NULL;
gst_element_set_state (data->pipeline, GST_STATE_NULL); gst_element_set_state(data->pipeline, GST_STATE_NULL);
gst_object_unref (data->pipeline); gst_object_unref(data->pipeline);
return NULL; return NULL;
} }
@ -435,135 +312,109 @@ static void *app_function (void *userdata) {
*/ */
/* Instruct the native code to create its internal data structure, pipeline and thread */ /* Instruct the native code to create its internal data structure, pipeline and thread */
static void gst_native_init (JNIEnv * env, jobject thiz) { static void gst_native_init(JNIEnv *env, jobject thiz) {
CustomData *data = g_new0 (CustomData, 1); CustomData *data = g_new0 (CustomData, 1);
data->desired_position = GST_CLOCK_TIME_NONE;
data->last_seek_time = GST_CLOCK_TIME_NONE;
SET_CUSTOM_DATA (env, thiz, custom_data_field_id, data); SET_CUSTOM_DATA (env, thiz, custom_data_field_id, data);
GST_DEBUG_CATEGORY_INIT (debug_category, "player", 0, GST_DEBUG_CATEGORY_INIT (debug_category, "player", 0,
"Android tutorial 5"); "Android tutorial 5");
gst_debug_set_threshold_for_name ("player", GST_LEVEL_DEBUG); gst_debug_set_threshold_for_name("player", GST_LEVEL_DEBUG);
GST_DEBUG ("Created CustomData at %p", data); GST_DEBUG ("Created CustomData at %p", data);
data->app = (*env)->NewGlobalRef (env, thiz); data->app = (*env)->NewGlobalRef(env, thiz);
GST_DEBUG ("Created GlobalRef for app object at %p", data->app); GST_DEBUG ("Created GlobalRef for app object at %p", data->app);
pthread_create (&gst_app_thread, NULL, &app_function, data); pthread_create(&gst_app_thread, NULL, &app_function, data);
} }
/* Quit the main loop, remove the native thread and free resources */ /* Quit the main loop, remove the native thread and free resources */
static void gst_native_finalize (JNIEnv * env, jobject thiz) { static void gst_native_finalize(JNIEnv *env, jobject thiz) {
CustomData *data = GET_CUSTOM_DATA (env, thiz, custom_data_field_id); CustomData *data = GET_CUSTOM_DATA (env, thiz, custom_data_field_id);
if (!data) if (!data)
return; return;
GST_DEBUG ("Quitting main loop..."); GST_DEBUG ("Quitting main loop...");
g_main_loop_quit (data->main_loop); g_main_loop_quit(data->main_loop);
GST_DEBUG ("Waiting for thread to finish..."); GST_DEBUG ("Waiting for thread to finish...");
pthread_join (gst_app_thread, NULL); pthread_join(gst_app_thread, NULL);
GST_DEBUG ("Deleting GlobalRef for app object at %p", data->app); GST_DEBUG ("Deleting GlobalRef for app object at %p", data->app);
(*env)->DeleteGlobalRef (env, data->app); (*env)->DeleteGlobalRef(env, data->app);
GST_DEBUG ("Freeing CustomData at %p", data); GST_DEBUG ("Freeing CustomData at %p", data);
g_free (data); g_free(data);
SET_CUSTOM_DATA (env, thiz, custom_data_field_id, NULL); SET_CUSTOM_DATA (env, thiz, custom_data_field_id, NULL);
GST_DEBUG ("Done finalizing"); GST_DEBUG ("Done finalizing");
} }
/* Set playbin2's URI */ /* Set playbin2's URI */
void gst_native_set_uri (JNIEnv * env, jobject thiz, jstring uri) { void gst_native_set_uri(JNIEnv *env, jobject thiz, jstring uri) {
CustomData *data = GET_CUSTOM_DATA (env, thiz, custom_data_field_id); CustomData *data = GET_CUSTOM_DATA (env, thiz, custom_data_field_id);
if (!data || !data->pipeline) if (!data || !data->pipeline)
return; return;
const gchar *char_uri = (*env)->GetStringUTFChars (env, uri, NULL); const gchar *char_uri = (*env)->GetStringUTFChars(env, uri, NULL);
GST_DEBUG ("Setting URI to %s", char_uri); GST_DEBUG ("Setting URI to %s", char_uri);
if (data->target_state >= GST_STATE_READY) if (data->target_state >= GST_STATE_READY)
gst_element_set_state (data->pipeline, GST_STATE_READY); gst_element_set_state(data->pipeline, GST_STATE_READY);
g_object_set (data->pipeline, "uri", char_uri, NULL); g_object_set(data->pipeline, "uri", char_uri, NULL);
(*env)->ReleaseStringUTFChars (env, uri, char_uri); (*env)->ReleaseStringUTFChars(env, uri, char_uri);
data->duration = GST_CLOCK_TIME_NONE;
data->is_live |= data->is_live |=
(gst_element_set_state (data->pipeline, (gst_element_set_state(data->pipeline, data->target_state) == GST_STATE_CHANGE_NO_PREROLL);
data->target_state) == GST_STATE_CHANGE_NO_PREROLL);
} }
/* Set pipeline to PLAYING state */ /* Set pipeline to PLAYING state */
static void gst_native_play (JNIEnv * env, jobject thiz) { static void gst_native_play(JNIEnv *env, jobject thiz) {
CustomData *data = GET_CUSTOM_DATA (env, thiz, custom_data_field_id); CustomData *data = GET_CUSTOM_DATA (env, thiz, custom_data_field_id);
if (!data) if (!data)
return; return;
GST_DEBUG ("Setting state to PLAYING"); GST_DEBUG ("Setting state to PLAYING");
data->target_state = GST_STATE_PLAYING; data->target_state = GST_STATE_PLAYING;
data->is_live |= data->is_live |= (gst_element_set_state(data->pipeline, GST_STATE_PLAYING) == GST_STATE_CHANGE_NO_PREROLL);
(gst_element_set_state (data->pipeline,
GST_STATE_PLAYING) == GST_STATE_CHANGE_NO_PREROLL);
} }
/* Set pipeline to PAUSED state */ /* Set pipeline to PAUSED state */
static void gst_native_pause (JNIEnv * env, jobject thiz) { static void gst_native_pause(JNIEnv *env, jobject thiz) {
CustomData *data = GET_CUSTOM_DATA (env, thiz, custom_data_field_id); CustomData *data = GET_CUSTOM_DATA (env, thiz, custom_data_field_id);
if (!data) if (!data)
return; return;
GST_DEBUG ("Setting state to PAUSED"); GST_DEBUG ("Setting state to PAUSED");
data->target_state = GST_STATE_PAUSED; data->target_state = GST_STATE_PAUSED;
data->is_live |= data->is_live |=(gst_element_set_state(data->pipeline, GST_STATE_PAUSED) == GST_STATE_CHANGE_NO_PREROLL);
(gst_element_set_state (data->pipeline,
GST_STATE_PAUSED) == GST_STATE_CHANGE_NO_PREROLL);
}
/* Instruct the pipeline to seek to a different position */
void gst_native_set_position (JNIEnv * env, jobject thiz, int milliseconds) {
CustomData *data = GET_CUSTOM_DATA (env, thiz, custom_data_field_id);
if (!data)
return;
gint64 desired_position = (gint64) (milliseconds * GST_MSECOND);
if (data->state >= GST_STATE_PAUSED) {
execute_seek (desired_position, data);
} else {
GST_DEBUG ("Scheduling seek to %" GST_TIME_FORMAT " for later",
GST_TIME_ARGS (desired_position));
data->desired_position = desired_position;
}
} }
/* Static class initializer: retrieve method and field IDs */ /* Static class initializer: retrieve method and field IDs */
static jboolean gst_native_class_init (JNIEnv * env, jclass klass) { static jboolean gst_native_class_init(JNIEnv *env, jclass klass) {
custom_data_field_id = custom_data_field_id =
(*env)->GetFieldID (env, klass, "native_custom_data", "J"); (*env)->GetFieldID(env, klass, "native_custom_data", "J");
set_message_method_id = set_message_method_id =
(*env)->GetMethodID (env, klass, "setMessage", "(Ljava/lang/String;)V"); (*env)->GetMethodID(env, klass, "setMessage", "(Ljava/lang/String;)V");
set_current_position_method_id =
(*env)->GetMethodID (env, klass, "setCurrentPosition", "(II)V");
on_gstreamer_initialized_method_id = on_gstreamer_initialized_method_id =
(*env)->GetMethodID (env, klass, "onGStreamerInitialized", "()V"); (*env)->GetMethodID(env, klass, "onGStreamerInitialized", "()V");
on_media_size_changed_method_id = on_media_size_changed_method_id =
(*env)->GetMethodID (env, klass, "onMediaSizeChanged", "(II)V"); (*env)->GetMethodID(env, klass, "onMediaSizeChanged", "(II)V");
if (!custom_data_field_id || !set_message_method_id if (!custom_data_field_id || !set_message_method_id
|| !on_gstreamer_initialized_method_id || !on_media_size_changed_method_id || !on_gstreamer_initialized_method_id || !on_media_size_changed_method_id) {
|| !set_current_position_method_id) {
/* We emit this message through the Android log instead of the GStreamer log because the later /* We emit this message through the Android log instead of the GStreamer log because the later
* has not been initialized yet. * has not been initialized yet.
*/ */
__android_log_print (ANDROID_LOG_ERROR, "tutorial-4", __android_log_print(ANDROID_LOG_ERROR, "tutorial-4",
"The calling class does not implement all necessary interface methods"); "The calling class does not implement all necessary interface methods");
return JNI_FALSE; return JNI_FALSE;
} }
return JNI_TRUE; return JNI_TRUE;
} }
static void gst_native_surface_init (JNIEnv * env, jobject thiz, jobject surface) { static void gst_native_surface_init(JNIEnv *env, jobject thiz, jobject surface) {
CustomData *data = GET_CUSTOM_DATA (env, thiz, custom_data_field_id); CustomData *data = GET_CUSTOM_DATA (env, thiz, custom_data_field_id);
if (!data) if (!data)
return; return;
ANativeWindow *new_native_window = ANativeWindow_fromSurface (env, surface); ANativeWindow *new_native_window = ANativeWindow_fromSurface(env, surface);
GST_DEBUG ("Received surface %p (native window %p)", surface, GST_DEBUG ("Received surface %p (native window %p)", surface,
new_native_window); new_native_window);
if (data->native_window) { if (data->native_window) {
ANativeWindow_release (data->native_window); ANativeWindow_release(data->native_window);
if (data->native_window == new_native_window) { if (data->native_window == new_native_window) {
GST_DEBUG ("New native window is the same as the previous one %p", GST_DEBUG ("New native window is the same as the previous one %p",
data->native_window); data->native_window);
if (data->pipeline) { if (data->pipeline) {
gst_video_overlay_expose (GST_VIDEO_OVERLAY (data->pipeline)); gst_video_overlay_expose(GST_VIDEO_OVERLAY (data->pipeline));
gst_video_overlay_expose (GST_VIDEO_OVERLAY (data->pipeline)); gst_video_overlay_expose(GST_VIDEO_OVERLAY (data->pipeline));
} }
return; return;
} else { } else {
@ -573,22 +424,22 @@ static void gst_native_surface_init (JNIEnv * env, jobject thiz, jobject surface
} }
data->native_window = new_native_window; data->native_window = new_native_window;
check_initialization_complete (data); check_initialization_complete(data);
} }
static void gst_native_surface_finalize (JNIEnv * env, jobject thiz) { static void gst_native_surface_finalize(JNIEnv *env, jobject thiz) {
CustomData *data = GET_CUSTOM_DATA (env, thiz, custom_data_field_id); CustomData *data = GET_CUSTOM_DATA (env, thiz, custom_data_field_id);
if (!data) if (!data)
return; return;
GST_DEBUG ("Releasing Native Window %p", data->native_window); GST_DEBUG ("Releasing Native Window %p", data->native_window);
if (data->pipeline) { if (data->pipeline) {
gst_video_overlay_set_window_handle (GST_VIDEO_OVERLAY (data->pipeline), gst_video_overlay_set_window_handle(GST_VIDEO_OVERLAY (data->pipeline),
(guintptr) NULL); (guintptr) NULL);
gst_element_set_state (data->pipeline, GST_STATE_READY); gst_element_set_state(data->pipeline, GST_STATE_READY);
} }
ANativeWindow_release (data->native_window); ANativeWindow_release(data->native_window);
data->native_window = NULL; data->native_window = NULL;
data->initialized = FALSE; data->initialized = FALSE;
} }
@ -600,7 +451,6 @@ static JNINativeMethod native_methods[] = {
{"nativeSetUri", "(Ljava/lang/String;)V", (void *) gst_native_set_uri}, {"nativeSetUri", "(Ljava/lang/String;)V", (void *) gst_native_set_uri},
{"nativePlay", "()V", (void *) gst_native_play}, {"nativePlay", "()V", (void *) gst_native_play},
{"nativePause", "()V", (void *) gst_native_pause}, {"nativePause", "()V", (void *) gst_native_pause},
{"nativeSetPosition", "(I)V", (void *) gst_native_set_position},
{"nativeSurfaceInit", "(Ljava/lang/Object;)V", {"nativeSurfaceInit", "(Ljava/lang/Object;)V",
(void *) gst_native_surface_init}, (void *) gst_native_surface_init},
{"nativeSurfaceFinalize", "()V", (void *) gst_native_surface_finalize}, {"nativeSurfaceFinalize", "()V", (void *) gst_native_surface_finalize},
@ -608,22 +458,21 @@ static JNINativeMethod native_methods[] = {
}; };
/* Library initializer */ /* Library initializer */
jint JNI_OnLoad (JavaVM * vm, void *reserved) { jint JNI_OnLoad(JavaVM *vm, void *reserved) {
JNIEnv *env = NULL; JNIEnv *env = NULL;
java_vm = vm; java_vm = vm;
if ((*vm)->GetEnv (vm, (void **) &env, JNI_VERSION_1_4) != JNI_OK) { if ((*vm)->GetEnv(vm, (void **) &env, JNI_VERSION_1_4) != JNI_OK) {
__android_log_print (ANDROID_LOG_ERROR, "player", __android_log_print(ANDROID_LOG_ERROR, "player",
"Could not retrieve JNIEnv"); "Could not retrieve JNIEnv");
return 0; return 0;
} }
jclass klass = (*env)->FindClass (env, jclass klass = (*env)->FindClass(env, "com/hisharp/gstreamer_player/GstLibrary");
"com/hisharp/gstreamer_player/GstLibrary"); (*env)->RegisterNatives(env, klass, native_methods,
(*env)->RegisterNatives (env, klass, native_methods,
G_N_ELEMENTS (native_methods)); G_N_ELEMENTS (native_methods));
pthread_key_create (&current_jni_env, detach_current_thread); pthread_key_create(&current_jni_env, detach_current_thread);
return JNI_VERSION_1_4; return JNI_VERSION_1_4;
} }