Wiki pages multimedia_tutorial created: tuto + 2 images + code c
Signed-off-by: Clément Bénier <clement.benier@openwide.fr>
This commit is contained in:
Clément Bénier
Cedric BAIL
parent
391e5c41dc
commit
5e59030540
|
|
@ -0,0 +1,196 @@
|
|||
#include <Elementary.h>
|
||||
#include <Emotion.h>
|
||||
|
||||
#define FILE "<pathToYourVideo>/big_buck_bunny_1080p_h264.mov"
|
||||
|
||||
static Evas_Object *nav;
|
||||
static Eina_Bool info; //if displaying info item
|
||||
|
||||
/* Time position and duration update */
|
||||
static void
|
||||
_player_info_time_update(void *data, Evas_Object *obj, void *event_info)
|
||||
{
|
||||
Evas_Object *emotion = obj, *label = data;
|
||||
char buf[256];
|
||||
|
||||
//switch on main item
|
||||
if (!info)
|
||||
{
|
||||
evas_object_smart_callback_del(emotion, "position_update", _player_info_time_update);
|
||||
evas_object_smart_callback_del(emotion, "length_change", _player_info_time_update);
|
||||
return;
|
||||
}
|
||||
|
||||
//update
|
||||
double position = emotion_object_position_get(emotion);
|
||||
double duration = emotion_object_play_length_get(emotion);
|
||||
int p_sec = (int) position % 60;
|
||||
int p_min = position / 60;
|
||||
int p_hour = position / 3600;
|
||||
int d_sec = (int) duration % 60;
|
||||
int d_min = duration / 60;
|
||||
int d_hour = duration / 3600;
|
||||
snprintf(buf, sizeof(buf), "%d:%02d:%02d / %d:%02d:%02d", p_hour, p_min, p_sec, d_hour, d_min, d_sec);
|
||||
elm_object_text_set(label, buf);
|
||||
}
|
||||
|
||||
/* get update status */
|
||||
static void
|
||||
_player_info_status_update(void *data, Evas_Object *obj, void *event_info)
|
||||
{
|
||||
Evas_Object *emotion = obj, *label = data;
|
||||
char buf[256];
|
||||
|
||||
//switch on main item
|
||||
if (!info)
|
||||
{
|
||||
evas_object_smart_callback_del(obj, "playback_finished", _player_info_status_update);
|
||||
return;
|
||||
}
|
||||
|
||||
//update
|
||||
double position = emotion_object_position_get(emotion);
|
||||
double duration = emotion_object_play_length_get(emotion);
|
||||
if (emotion_object_play_get(emotion))
|
||||
elm_object_text_set(label, "<b>Playing</b>");
|
||||
else if (position < duration)
|
||||
elm_object_text_set(label, "<b>Paused</b>");
|
||||
else
|
||||
elm_object_text_set(label, "<b>Ended</b>");
|
||||
}
|
||||
|
||||
/* del info item callback */
|
||||
static Eina_Bool
|
||||
_player_info_del_cb(void *data, Elm_Object_Item *it)
|
||||
{
|
||||
info = EINA_FALSE;
|
||||
return EINA_TRUE;
|
||||
}
|
||||
|
||||
/* info callback */
|
||||
static void
|
||||
_player_info_cb(void *data, Evas_Object *obj, void *event_info)
|
||||
{
|
||||
Evas_Object *video = data, *emotion;
|
||||
Evas_Object *table, *label;
|
||||
char buf[256];
|
||||
|
||||
emotion = elm_video_emotion_get(video);
|
||||
info = EINA_TRUE;
|
||||
table = elm_table_add(obj);
|
||||
elm_table_padding_set(table, 8, 8);
|
||||
evas_object_size_hint_weight_set(table, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
|
||||
evas_object_show(table);
|
||||
|
||||
/* display the playing status in label */
|
||||
label = elm_label_add(table);
|
||||
evas_object_show(label);
|
||||
_player_info_status_update(label, emotion, NULL);
|
||||
elm_table_pack(table, label, 0, 0, 2, 1);
|
||||
evas_object_smart_callback_add(emotion, "playback_finished", _player_info_status_update, label);
|
||||
|
||||
/* get the file name and location */
|
||||
//set file label
|
||||
label = elm_label_add(table);
|
||||
elm_object_text_set(label, "File:");
|
||||
evas_object_show(label);
|
||||
elm_table_pack(table, label, 0, 1, 1, 1);
|
||||
|
||||
//set file name label
|
||||
const char *file = emotion_object_file_get(emotion);
|
||||
label = elm_label_add(table);
|
||||
elm_object_text_set(label, ecore_file_file_get(file));
|
||||
evas_object_show(label);
|
||||
elm_table_pack(table, label, 1, 1, 1, 1);
|
||||
|
||||
//set location label
|
||||
label = elm_label_add(table);
|
||||
elm_object_text_set(label, "Location:");
|
||||
evas_object_show(label);
|
||||
elm_table_pack(table, label, 0, 2, 1, 1);
|
||||
|
||||
//set location path label
|
||||
label = elm_label_add(table);
|
||||
elm_object_text_set(label, ecore_file_dir_get(file));
|
||||
elm_object_text_set(label,"/home/efl/videos");
|
||||
evas_object_show(label);
|
||||
elm_table_pack(table, label, 1, 2, 1, 1);
|
||||
|
||||
/* get the video position and duration */
|
||||
//set time label
|
||||
label = elm_label_add(table);
|
||||
elm_object_text_set(label, "Time:");
|
||||
evas_object_show(label);
|
||||
elm_table_pack(table, label, 0, 3, 1, 1);
|
||||
|
||||
//set position-duration label
|
||||
label = elm_label_add(table);
|
||||
double position = elm_video_play_position_get(video);
|
||||
double duration = elm_video_play_length_get(video);
|
||||
int p_sec = (int) position % 60;
|
||||
int p_min = position / 60;
|
||||
int p_hour = position / 3600;
|
||||
int d_sec = (int) duration % 60;
|
||||
int d_min = duration / 60;
|
||||
int d_hour = duration / 3600;
|
||||
snprintf(buf, sizeof(buf), "%d:%02d:%02d / %d:%02d:%02d", p_hour, p_min, p_sec, d_hour, d_min, d_sec);
|
||||
elm_object_text_set(label, buf);
|
||||
elm_table_pack(table, label, 1, 3, 1, 1);
|
||||
evas_object_show(label);
|
||||
evas_object_smart_callback_add(emotion, "position_update", _player_info_time_update, label);
|
||||
evas_object_smart_callback_add(emotion, "length_change", _player_info_time_update, label);
|
||||
|
||||
/* get the video dimensions */
|
||||
label = elm_label_add(table);
|
||||
elm_object_text_set(label, "Size:");
|
||||
evas_object_show(label);
|
||||
elm_table_pack(table, label, 0, 4, 1, 1);
|
||||
label = elm_label_add(table);
|
||||
int w, h;
|
||||
emotion_object_size_get(emotion, &w, &h);
|
||||
snprintf(buf, sizeof(buf), "%d × %d", w, h);
|
||||
elm_object_text_set(label, buf);
|
||||
evas_object_show(label);
|
||||
elm_table_pack(table, label, 1, 4, 1, 1);
|
||||
|
||||
/* push info in a separate naviframe item */
|
||||
Elm_Object_Item *it = elm_naviframe_item_push(nav, "Information", NULL, NULL, table, NULL);
|
||||
elm_naviframe_item_pop_cb_set(it, _player_info_del_cb, NULL);
|
||||
}
|
||||
|
||||
EAPI_MAIN int
|
||||
elm_main(int argc, char **argv)
|
||||
{
|
||||
Evas_Object *win;
|
||||
info = EINA_FALSE;
|
||||
win = elm_win_util_standard_add("main", "Multimedia Tutorial");
|
||||
evas_object_show(win);
|
||||
elm_policy_set(ELM_POLICY_QUIT, ELM_POLICY_QUIT_LAST_WINDOW_CLOSED);
|
||||
elm_win_autodel_set(win, EINA_TRUE);
|
||||
nav = elm_naviframe_add(win);
|
||||
evas_object_size_hint_weight_set(nav, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
|
||||
elm_win_resize_object_add(win, nav);
|
||||
evas_object_show(nav);
|
||||
|
||||
Evas_Object *video;
|
||||
video = elm_video_add(win);
|
||||
evas_object_size_hint_weight_set(video, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
|
||||
elm_video_file_set(video, FILE);
|
||||
elm_video_play(video);
|
||||
evas_object_show(video);
|
||||
|
||||
Evas_Object *player;
|
||||
player = elm_player_add(win);
|
||||
evas_object_size_hint_weight_set(player, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
|
||||
elm_object_content_set(player, video);
|
||||
evas_object_smart_callback_add(player, "info,clicked", _player_info_cb, video);
|
||||
evas_object_show(player);
|
||||
|
||||
Elm_Object_Item *it = elm_naviframe_item_push(nav, "Video", NULL, NULL, player, NULL);
|
||||
elm_naviframe_item_title_enabled_set(it, EINA_FALSE, EINA_FALSE);
|
||||
|
||||
elm_run();
|
||||
elm_shutdown();
|
||||
return EXIT_SUCCESS;
|
||||
}
|
||||
ELM_MAIN()
|
||||
Binary file not shown.
|
After Width: | Height: | Size: 210 KiB |
Binary file not shown.
|
After Width: | Height: | Size: 22 KiB |
|
|
@ -51,6 +51,7 @@ Go check the current available version of EFL on each distro/platform:
|
|||
* [[tutorial/gl_2d_tutorial|GL 2D Tutorial]]
|
||||
* [[tutorial/preference_tutorial|Preference Tutorial]]
|
||||
* [[tutorial/effects_tutorial|Effects Tutorial]]
|
||||
* [[tutorial/multimedia_tutorial|Effects Tutorial]]
|
||||
|
||||
----
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,254 @@
|
|||
~~Title: Multimedia Tutorial~~
|
||||
==== Multimedia Tutorial ====
|
||||
|
||||
In this tutorial, we will see how to play a multimedia file (video) in an
|
||||
application.
|
||||
|
||||
=== Table of Contents ===
|
||||
|
||||
* [[#Basic_video_widgets|Basic video widgets]]
|
||||
* [[#Getting_more_information|Getting more information]]
|
||||
* [[#Playing_Status|Playing Status]]
|
||||
* [[#Get_the_file_name_and_location|Get the file name and location]]
|
||||
* [[#Get_time_position_and_duration|Get time position and duration]]
|
||||
* [[#Get_the_video_dimensions|Get the video dimensions]]
|
||||
|
||||
Multimedia example: {{ :multimedia.png }}
|
||||
//**__The whole code__: **//{{:code_c/tutorial/multimedia/multimedia.c}}
|
||||
|
||||
\\
|
||||
The EFL have a special library for multimedia file playing purposes: Emotion.
|
||||
That library has some wrappers in Elementary to let you easily write
|
||||
applications: these are ''Elm_Video'' and ''Elm_Player''.
|
||||
|
||||
* Elm_Video provides a simple video object.
|
||||
* Elm_Player provides an interface to show a bar with basic actions (like rewind, fast forward, pause, etc.) to interract with a playing video.
|
||||
|
||||
-----------
|
||||
|
||||
=== Basic video widgets ===
|
||||
|
||||
<code c>
|
||||
Evas_Object *video;
|
||||
video = elm_video_add(win);
|
||||
evas_object_size_hint_weight_set(video, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
|
||||
elm_video_file_set(video, FILE);
|
||||
elm_video_play(video);
|
||||
evas_object_show(video);
|
||||
</code>
|
||||
|
||||
Create a new ''Elm_Video'' object. This object is the main widget for a video.
|
||||
The actual video file is then set (which is here the ''FILE'' macro).
|
||||
''Elm_Video'' can take either a path to a file or any kind of URL. Finally,
|
||||
the video starts playing
|
||||
|
||||
<code c>
|
||||
Evas_Object *player;
|
||||
player = elm_player_add(win);
|
||||
evas_object_size_hint_weight_set(player, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
|
||||
elm_object_content_set(player, video);
|
||||
evas_object_smart_callback_add(player, "info,clicked", _player_info_cb, video);
|
||||
evas_object_show(player);
|
||||
</code>
|
||||
|
||||
Now create an ''Elm_Player'' object. This object wraps around an ''Elm_Video''
|
||||
to have it automatically resized, to show a user interface with basic buttons,
|
||||
a progress bar and other stuff. A callback is added for the
|
||||
''info,clicked'' event, which is launched when the user clicks on the
|
||||
information button in the player interface. This callback will be detailed
|
||||
further.
|
||||
|
||||
The player interface is eventually set as a naviframe item.
|
||||
|
||||
<code c>
|
||||
Elm_Object_Item *it = elm_naviframe_item_push(nav, "Video", NULL, NULL, player, NULL);
|
||||
elm_naviframe_item_title_enabled_set(it, EINA_FALSE, EINA_FALSE);
|
||||
</code>
|
||||
|
||||
=== Getting more information ===
|
||||
|
||||
The purpose is to display some information about the video the user wants to. For
|
||||
instance, the video file name, its location, duration, and
|
||||
image size will be displayed. This list is of course not exhaustive and much
|
||||
more information could be added.
|
||||
|
||||
Some are not directly available in ''Elm_Video'' nor in
|
||||
''Elm_Player''. But the underlaying Emotion object is available with the
|
||||
''elm_video_emotion_get(video)'' function.
|
||||
|
||||
== Playing Status ==
|
||||
|
||||
Set the label to display the playing status in ''_player_info_cb''.
|
||||
|
||||
<code c>
|
||||
label = elm_label_add(table);
|
||||
evas_object_show(label);
|
||||
_player_info_status_update(label, emotion, NULL);
|
||||
elm_table_pack(table, label, 0, 0, 2, 1);
|
||||
evas_object_smart_callback_add(emotion, "playback_finished", _player_info_status_update, label);
|
||||
</code>
|
||||
|
||||
That function is also registered as a callback upon ''playback_finished'' so
|
||||
that the status is updated upon playback completion.
|
||||
|
||||
Get the playing status with ''_player_info_status_update'' callback:
|
||||
The ''emotion_object_play_get'' return true if the video is playing, if not
|
||||
the video is in paused or ended.
|
||||
|
||||
<code c>
|
||||
static void
|
||||
_player_info_status_update(void *data, Evas_Object *obj, void *event_info)
|
||||
{
|
||||
Evas_Object *emotion = obj, *label = data;
|
||||
char buf[256];
|
||||
|
||||
//switch on main item
|
||||
if (!info)
|
||||
{
|
||||
evas_object_smart_callback_del(obj, "playback_finished", _player_info_status_update);
|
||||
return;
|
||||
}
|
||||
|
||||
//update
|
||||
double position = emotion_object_position_get(emotion);
|
||||
double duration = emotion_object_play_length_get(emotion);
|
||||
if (emotion_object_play_get(emotion))
|
||||
elm_object_text_set(label, "<b>Playing</b>");
|
||||
else if (position < duration)
|
||||
elm_object_text_set(label, "<b>Paused</b>");
|
||||
else
|
||||
elm_object_text_set(label, "<b>Ended</b>");
|
||||
}
|
||||
</code>
|
||||
|
||||
== Get the file name and location ==
|
||||
|
||||
Get the file name and location with ''emotion_object_file_get'' and
|
||||
''ecore_file_file_get'' functions.
|
||||
|
||||
<code c>
|
||||
label = elm_label_add(table);
|
||||
elm_object_text_set(label, "File:");
|
||||
evas_object_show(label);
|
||||
elm_table_pack(table, label, 0, 1, 1, 1);
|
||||
|
||||
const char *file = emotion_object_file_get(emotion);
|
||||
label = elm_label_add(table);
|
||||
elm_object_text_set(label, ecore_file_file_get(file));
|
||||
evas_object_show(label);
|
||||
elm_table_pack(table, label, 1, 1, 1, 1);
|
||||
|
||||
label = elm_label_add(table);
|
||||
elm_object_text_set(label, "Location:");
|
||||
evas_object_show(label);
|
||||
elm_table_pack(table, label, 0, 2, 1, 1);
|
||||
|
||||
label = elm_label_add(table);
|
||||
elm_object_text_set(label, ecore_file_dir_get(file));
|
||||
evas_object_show(label);
|
||||
elm_table_pack(table, label, 1, 2, 1, 1);
|
||||
</code>
|
||||
|
||||
== Get time position and duration ==
|
||||
|
||||
Get video time position and duration using ''elm_video_play_position_get'' and
|
||||
''elm_video_play_length_get'' functions. These functions returns double time
|
||||
values in seconds.
|
||||
|
||||
<code c>
|
||||
label = elm_label_add(table);
|
||||
elm_object_text_set(label, "Time:");
|
||||
evas_object_show(label);
|
||||
elm_table_pack(table, label, 0, 3, 1, 1);
|
||||
|
||||
label = elm_label_add(table);
|
||||
double position = elm_video_play_position_get(video);
|
||||
double duration = elm_video_play_length_get(video);
|
||||
int p_sec = (int) position % 60;
|
||||
int p_min = position / 60;
|
||||
int p_hour = position / 3600;
|
||||
int d_sec = (int) duration % 60;
|
||||
int d_min = duration / 60;
|
||||
int d_hour = duration / 3600;
|
||||
snprintf(buf, sizeof(buf), "%d:%02d:%02d / %d:%02d:%02d", p_hour, p_min, p_sec, d_hour, d_min, d_sec);
|
||||
elm_object_text_set(label, buf);
|
||||
evas_object_show(label);
|
||||
elm_table_pack(table, label, 1, 3, 1, 1);
|
||||
evas_object_smart_callback_add(emotion, "position_update", _player_info_time_update, label);
|
||||
evas_object_smart_callback_add(emotion, "length_change", _player_info_time_update, label);
|
||||
</code>
|
||||
|
||||
Here, a callback on both position_update and length_change events are added so
|
||||
that timings are always up-to-date.
|
||||
|
||||
<code c>
|
||||
static void
|
||||
_player_info_time_update(void *data, Evas_Object *obj, void *event_info)
|
||||
{
|
||||
Evas_Object *emotion = obj, *label = data;
|
||||
char buf[256];
|
||||
|
||||
//switch on main item
|
||||
if (!info)
|
||||
{
|
||||
evas_object_smart_callback_del(emotion, "position_update", _player_info_time_update);
|
||||
evas_object_smart_callback_del(emotion, "length_change", _player_info_time_update);
|
||||
return;
|
||||
}
|
||||
|
||||
//update
|
||||
double position = emotion_object_position_get(emotion);
|
||||
double duration = emotion_object_play_length_get(emotion);
|
||||
int p_sec = (int) position % 60;
|
||||
int p_min = position / 60;
|
||||
int p_hour = position / 3600;
|
||||
int d_sec = (int) duration % 60;
|
||||
int d_min = duration / 60;
|
||||
int d_hour = duration / 3600;
|
||||
snprintf(buf, sizeof(buf), "%d:%02d:%02d / %d:%02d:%02d", p_hour, p_min, p_sec, d_hour, d_min, d_sec);
|
||||
elm_object_text_set(label, buf);
|
||||
}
|
||||
</code>
|
||||
|
||||
In this callback, the emotion functions ''emotion_object_position_get'' and
|
||||
''emotion_object_play_length_get'' are used instead of ''elm_video_play_position_get'' and
|
||||
''elm_video_play_length_get''. They have the exact same semantics, but are shown
|
||||
here so that you know that some data exposed through Emotion may also be
|
||||
available thanks to ''Elm_Video'': ''_player_info_status_update'' could also
|
||||
have been called directly after the widget creation as for
|
||||
''_player_info_time_update''.
|
||||
|
||||
== Get the video dimensions ==
|
||||
|
||||
Finally get the video dimensions using ''emotion_object_size_get'' by giving
|
||||
width and height pointers as parameters:
|
||||
|
||||
<code c>
|
||||
label = elm_label_add(table);
|
||||
elm_object_text_set(label, "Size:");
|
||||
evas_object_show(label);
|
||||
elm_table_pack(table, label, 0, 4, 1, 1);
|
||||
label = elm_label_add(table);
|
||||
int w, h;
|
||||
emotion_object_size_get(emotion, &w, &h);
|
||||
snprintf(buf, sizeof(buf), "%d × %d", w, h);
|
||||
elm_object_text_set(label, buf);
|
||||
evas_object_show(label);
|
||||
elm_table_pack(table, label, 1, 4, 1, 1);
|
||||
</code>
|
||||
|
||||
All of this is shown in a separate naviframe item.
|
||||
|
||||
<code c>
|
||||
Elm_Object_Item *it = elm_naviframe_item_push(nav, "Information", NULL, NULL, table, NULL);
|
||||
elm_naviframe_item_pop_cb_set(it, _player_info_del_cb, NULL);
|
||||
</code>
|
||||
|
||||
The ''_player_info_del_cb'' function is here registered in order to be called
|
||||
when the naviframe item is popped. This callback sets the global boolean
|
||||
''info'' to ''EINA_FALSE'', and so allows other delete callbacks to be
|
||||
called.
|
||||
|
||||
{{ :multimedia_info.png }}
|
||||
\\
|
||||
//**__The whole code__: **//{{:code_c/tutorial/multimedia/multimedia.c}}
|
||||
Loading…
Reference in New Issue