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winlin
065cbbe4 1 parent 02f46d6f

add fullscreen event and rescale

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正在显示 5 个修改的文件 包含 466 行增加 和 206 行删除
/**
* update the navigator, add same query string.
*/
function update_nav() {
$("#nav_srs_player").attr("href", "srs_player.html" + window.location.search);
$("#nav_srs_publisher").attr("href", "srs_publisher.html" + window.location.search);
... ... @@ -7,6 +10,9 @@ function update_nav() {
$("#nav_vlc").attr("href", "vlc.html" + window.location.search);
}
/**
* parse the query string to object.
*/
function parse_query_string(){
var query_string = String(window.location.search).replace(" ", "").split("?")[1];
if(query_string == undefined){
... ... @@ -60,6 +66,11 @@ function build_default_hls_url() {
return "http://" + vhost + ":" + port + "/" + app + "/" + stream + ".m3u8";
}
/**
* initialize the page.
* @param rtmp_url the rtmp stream url to play
* @param hls_url the hls stream url to play
*/
function srs_init(rtmp_url, hls_url) {
update_nav();
... ... @@ -70,3 +81,146 @@ function srs_init(rtmp_url, hls_url) {
$(hls_url).val(build_default_hls_url());
}
}
//////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////
/**
* the SrsPlayer object.
*/
function SrsPlayer(container, stream_url, width, height, buffer_time) {
if (!SrsPlayer.__id) {
SrsPlayer.__id = 100;
}
if (!SrsPlayer.__players) {
SrsPlayer.__players = [];
}
SrsPlayer.__players.push(this);
this.container = container;
this.stream_url = stream_url;
this.width = width;
this.height = height;
this.buffer_time = buffer_time;
this.id = SrsPlayer.__id++;
this.callbackObj = null;
// callback set the following values.
this.meatadata = {}; // for on_player_metadata
}
/**
* user can set some callback, then start the player.
* callbacks:
* on_player_ready():int, when srs player ready, user can play.
* on_player_metadata(metadata:Object):int, when srs player get metadata.
*/
SrsPlayer.prototype.start = function() {
// embed the flash.
var flashvars = {};
flashvars.id = this.id;
flashvars.on_player_ready = "__srs_on_player_ready";
flashvars.on_player_metadata = "__srs_on_player_metadata";
var params = {};
params.wmode = "opaque";
params.allowFullScreen = "true";
params.allowScriptAccess = "always";
var attributes = {};
var self = this;
swfobject.embedSWF(
"srs_player/release/srs_player.swf", this.container,
this.width, this.height,
"11.1", "js/AdobeFlashPlayerInstall.swf",
flashvars, params, attributes,
function(callbackObj){
self.callbackObj = callbackObj;
}
);
return this;
}
SrsPlayer.prototype.play = function() {
return this.callbackObj.ref.__play(this.stream_url, this.width, this.height, this.buffer_time);
}
SrsPlayer.prototype.stop = function() {
for (var i = 0; i < SrsPlayer.__players.length; i++) {
var player = SrsPlayer.__players[i];
if (player.id != this.id) {
continue;
}
SrsPlayer.__players.splice(i, 1);
break;
}
return this.callbackObj.ref.__stop();
}
SrsPlayer.prototype.pause = function() {
return this.callbackObj.ref.__pause();
}
SrsPlayer.prototype.resume = function() {
return this.callbackObj.ref.__resume();
}
/**
* to set the DAR, for example, DAR=16:9
* @param num, for example, 9.
* use metadata height if 0.
* use user specified height if -1.
* @param den, for example, 16.
* use metadata width if 0.
* use user specified width if -1.
*/
SrsPlayer.prototype.dar = function(num, den) {
return this.callbackObj.ref.__dar(num, den);
}
/**
* set the fullscreen size data.
* @refer the refer fullscreen mode. it can be:
* video: use video orignal size.
* screen: use screen size to rescale video.
* @param percent, the rescale percent, where
* 100 means 100%.
*/
SrsPlayer.prototype.set_fs = function(refer, percent) {
return this.callbackObj.ref.__set_fs(refer, percent);
}
SrsPlayer.prototype.on_player_ready = function() {
return this.play();
}
SrsPlayer.prototype.on_player_metadata = function(metadata) {
return 0;
}
function __srs_on_player_ready(id) {
for (var i = 0; i < SrsPlayer.__players.length; i++) {
var player = SrsPlayer.__players[i];
if (player.id != id) {
continue;
}
return player.on_player_ready();
}
throw new Error("player not found. id=" + id);
}
function __srs_on_player_metadata(id, metadata) {
for (var i = 0; i < SrsPlayer.__players.length; i++) {
var player = SrsPlayer.__players[i];
if (player.id != id) {
continue;
}
// user may override the on_player_metadata,
// so set the data before invoke it.
player.metadata = metadata;
return player.on_player_metadata(metadata);
}
throw new Error("player not found. id=" + id);
}
... ...
... ... @@ -14,13 +14,30 @@
}
</style>
<script type="text/javascript">
var active_dar = null;
function select_dar(dar_id) {
if (active_dar) {
active_dar.removeClass("active");
var srs_player = null;
var __active_dar = null;
function select_dar(dar_id, num, den) {
srs_player.dar(num, den);
if (__active_dar) {
__active_dar.removeClass("active");
}
__active_dar = $(dar_id).parent();
__active_dar.addClass("active");
}
active_dar = $(dar_id).parent();
active_dar.addClass("active");
var __active_size = null;
function select_fs_size(size_id, refer, percent) {
srs_player.set_fs(refer, percent);
if (__active_size) {
__active_size.removeClass("active");
}
__active_size = $(size_id).parent();
__active_size.addClass("active");
}
$(function(){
... ... @@ -29,9 +46,15 @@
// url set to: rtmp://demo:1935/live/livestream
srs_init($("#txt_url"));
var srs_player = null;
$("#fs_tips").tooltip({
title: "点击视频进入或退出全屏"
});
$("#main_modal").on("show", function(){
if (srs_player) {
return;
}
$("#div_container").remove();
var obj = $("<div/>");
... ... @@ -51,16 +74,22 @@
}
srs_player.on_player_metadata = function(metadata) {
$("#btn_dar_original").text("视频原始比例" + "(" + metadata.width + ":" + metadata.height + ")");
srs_player.dar(0, 0);
select_dar("#btn_dar_original");
select_dar("#btn_dar_original", 0, 0);
select_fs_size("#btn_fs_size_screen_100", "screen", 100);
return 0;
}
srs_player.start();
});
$("#main_modal").on("hide", function(){
if ($("#main_modal").is(":visible")) {
return;
}
if (srs_player) {
srs_player.stop();
srs_player = null;
}
});
$("#btn_play").click(function(){
... ... @@ -68,177 +97,54 @@
});
$("#btn_pause").click(function(){
if ($("#btn_pause").text() == "暂停") {
$("#btn_pause").text("继续");
if ($("#btn_pause").text() == "暂停播放") {
$("#btn_pause").text("继续播放");
srs_player.pause();
} else {
$("#btn_pause").text("暂停");
$("#btn_pause").text("暂停播放");
srs_player.resume();
}
});
if (true) {
$("#btn_dar_original").click(function(){
srs_player.dar(0, 0);
select_dar("#btn_dar_original");
select_dar("#btn_dar_original", 0, 0);
});
$("#btn_dar_21_9").click(function(){
srs_player.dar(9, 21);
select_dar("#btn_dar_21_9");
select_dar("#btn_dar_21_9", 9, 21);
});
$("#btn_dar_16_9").click(function(){
srs_player.dar(9, 16);
select_dar("#btn_dar_16_9");
select_dar("#btn_dar_16_9", 9, 16);
});
$("#btn_dar_4_3").click(function(){
srs_player.dar(3, 4);
select_dar("#btn_dar_4_3");
select_dar("#btn_dar_4_3", 3, 4);
});
$("#btn_dar_fill").click(function(){
srs_player.dar(-1, -1);
select_dar("#btn_dar_fill");
select_dar("#btn_dar_fill", -1, -1);
});
});
/*
* the SrsPlayer object.
*/
function SrsPlayer(container, stream_url, width, height, buffer_time) {
if (!SrsPlayer.__id) {
SrsPlayer.__id = 100;
}
if (!SrsPlayer.__players) {
SrsPlayer.__players = [];
}
SrsPlayer.__players.push(this);
this.container = container;
this.stream_url = stream_url;
this.width = width;
this.height = height;
this.buffer_time = buffer_time;
this.id = SrsPlayer.__id++;
this.callbackObj = null;
// callback set the following values.
this.meatadata = {}; // for on_player_metadata
}
/*
* user can set some callback, then start the player.
* callbacks:
* on_player_ready():int, when srs player ready, user can play.
* on_player_metadata(metadata:Object):int, when srs player get metadata.
*/
SrsPlayer.prototype.start = function() {
// embed the flash.
var flashvars = {};
flashvars.id = this.id;
flashvars.on_player_ready = "__srs_on_player_ready";
flashvars.on_player_metadata = "__srs_on_player_metadata";
var params = {};
params.wmode = "opaque";
params.allowFullScreen = true;
params.allowScriptAccess = "always";
var attributes = {};
var self = this;
swfobject.embedSWF(
"srs_player/release/srs_player.swf", this.container,
this.width, this.height,
"11.1", "js/AdobeFlashPlayerInstall.swf",
flashvars, params, attributes,
function(callbackObj){
self.callbackObj = callbackObj;
}
);
return this;
}
SrsPlayer.prototype.play = function() {
return this.callbackObj.ref.__play(this.stream_url, this.width, this.height, this.buffer_time);
}
SrsPlayer.prototype.stop = function() {
for (var i = 0; i < SrsPlayer.__players.length; i++) {
var player = SrsPlayer.__players[i];
if (player.id != this.id) {
continue;
}
SrsPlayer.__players.splice(i, 1);
break;
}
return this.callbackObj.ref.__stop();
}
SrsPlayer.prototype.pause = function() {
return this.callbackObj.ref.__pause();
}
SrsPlayer.prototype.resume = function() {
return this.callbackObj.ref.__resume();
}
/*
* to set the DAR, for example, DAR=16:9
* @param num, for example, 9.
* use metadata height if 0.
* use user specified height if -1.
* @param den, for example, 16.
* use metadata width if 0.
* use user specified width if -1.
*/
SrsPlayer.prototype.dar = function(num, den) {
if (num == 0 && this.metadata) {
num = this.metadata.height;
} else if (num == -1) {
num = this.height;
}
if (den == 0 && this.metadata) {
den = this.metadata.width;
} else if (den == -1) {
den = this.width;
}
return this.callbackObj.ref.__dar(num, den);
}
SrsPlayer.prototype.on_player_ready = function() {
return this.play();
}
SrsPlayer.prototype.on_player_metadata = function(metadata) {
return 0;
}
function __srs_on_player_ready(id) {
for (var i = 0; i < SrsPlayer.__players.length; i++) {
var player = SrsPlayer.__players[i];
if (player.id != id) {
continue;
}
return player.on_player_ready();
}
throw new Error("player not found. id=" + id);
}
function __srs_on_player_metadata(id, metadata) {
for (var i = 0; i < SrsPlayer.__players.length; i++) {
var player = SrsPlayer.__players[i];
if (player.id != id) {
continue;
}
// user may override the on_player_metadata,
// so set the data before invoke it.
player.metadata = metadata;
return player.on_player_metadata(metadata);
}
throw new Error("player not found. id=" + id);
if (true) {
$("#btn_fs_size_video_100").click(function(){
select_fs_size("#btn_fs_size_video_100", "video", 100);
});
$("#btn_fs_size_video_75").click(function(){
select_fs_size("#btn_fs_size_video_75", "video", 75);
});
$("#btn_fs_size_video_50").click(function(){
select_fs_size("#btn_fs_size_video_50", "video", 50);
});
$("#btn_fs_size_screen_100").click(function(){
select_fs_size("#btn_fs_size_screen_100", "screen", 100);
});
$("#btn_fs_size_screen_75").click(function(){
select_fs_size("#btn_fs_size_screen_75", "screen", 75);
});
$("#btn_fs_size_screen_50").click(function(){
select_fs_size("#btn_fs_size_screen_50", "screen", 50);
});
}
});
</script>
</head>
<body>
... ... @@ -278,19 +184,39 @@
</div>
<div class="modal-footer">
<div class="btn-group dropup">
<button class="btn dropdown-toggle" data-toggle="dropdown">宽高比 <span class="caret"></span></button>
<button class="btn dropdown-toggle" data-toggle="dropdown">
<a id="fs_tips" href="#" data-toggle="tooltip" data-placement="top" title="">
<img src="img/tooltip.png"/>
</a>
全屏大小<span class="caret"></span>
</button>
<ul class="dropdown-menu">
<li><a id="btn_fs_size_screen_100" href="#">屏幕大小(100%)</a></li>
<li><a id="btn_fs_size_screen_75" href="#">屏幕大小(75%)</a></li>
<li><a id="btn_fs_size_screen_50" href="#">屏幕大小(50%)</a></li>
<li><a id="btn_fs_size_video_100" href="#">视频大小(100%)</a></li>
<li><a id="btn_fs_size_video_75" href="#">视频大小(75%)</a></li>
<li><a id="btn_fs_size_video_50" href="#">视频大小(50%)</a></li>
</ul>
</div>
<div class="btn-group dropup">
<button class="btn dropdown-toggle" data-toggle="dropdown">显示比例<span class="caret"></span></button>
<ul class="dropdown-menu">
<li><a id="btn_dar_original" href="#">视频原始比例</a></li>
<li><a id="btn_dar_21_9" href="#">宽屏影院(21:9)</a></li>
<li><a id="btn_dar_16_9" href="#">宽屏电影(16:9)</a></li>
<li><a id="btn_dar_4_3" href="#">窄屏(4:3)</a></li>
<li><a id="btn_dar_fill" href="#">填充</a></li>
<li><a id="btn_dar_fill" href="#">填充(容器比例)</a></li>
</ul>
</div>
<button id="btn_pause" class="btn">暂停</button>
<div class="btn-group dropup">
<button id="btn_pause" class="btn">暂停播放</button>
</div>
<div class="btn-group dropup">
<button class="btn btn-primary" data-dismiss="modal" aria-hidden="true">关闭</button>
</div>
</div>
</div>
<hr>
<footer>
<p><a href="https://github.com/winlinvip/simple-rtmp-server">SRS Team &copy; 2013</a></p>
... ...
... ... @@ -2,13 +2,17 @@ package
{
import flash.display.Sprite;
import flash.display.StageAlign;
import flash.display.StageDisplayState;
import flash.display.StageScaleMode;
import flash.events.Event;
import flash.events.FullScreenEvent;
import flash.events.MouseEvent;
import flash.events.NetStatusEvent;
import flash.external.ExternalInterface;
import flash.media.Video;
import flash.net.NetConnection;
import flash.net.NetStream;
import flash.system.Security;
import flash.ui.ContextMenu;
import flash.ui.ContextMenuItem;
import flash.utils.setTimeout;
... ... @@ -23,18 +27,29 @@ package
// play param url.
private var url:String = null;
// play param, user set width
// play param, user set width and height
private var w:int = 0;
// play param, user set height.
private var h:int = 0;
// user set dar den:num
private var dar_num:int = 0;
private var dar_den:int = 0;
// user set fs(fullscreen) refer and percent.
private var fs_refer:String = null;
private var fs_percent:int = 0;
private var conn:NetConnection = null;
private var stream:NetStream = null;
private var video:Video = null;
private var metadata:Object = {};
// flash donot allow js to set to fullscreen,
// only allow user click to enter fullscreen.
private var fs_mask:Sprite = new Sprite();
public function srs_player()
{
flash.system.Security.allowDomain("*");
if (!this.stage) {
this.addEventListener(Event.ADDED_TO_STAGE, this.onAddToStage);
} else {
... ... @@ -46,6 +61,12 @@ package
this.stage.align = StageAlign.TOP_LEFT;
this.stage.scaleMode = StageScaleMode.NO_SCALE;
this.stage.addEventListener(FullScreenEvent.FULL_SCREEN, this.on_stage_fullscreen);
this.addChild(this.fs_mask);
this.fs_mask.buttonMode = true;
this.fs_mask.addEventListener(MouseEvent.CLICK, on_user_click_video);
this.contextMenu = new ContextMenu();
this.contextMenu.hideBuiltInItems();
... ... @@ -62,13 +83,21 @@ package
this.on_player_ready = flashvars.on_player_ready;
this.on_player_metadata = flashvars.on_player_metadata;
flash.utils.setTimeout(this.onJsReady, 0);
flash.utils.setTimeout(this.on_js_ready, 0);
}
private function on_stage_fullscreen(evt:FullScreenEvent):void {
if (!evt.fullScreen) {
execute_user_set_dar();
} else {
execute_user_enter_fullscreen();
}
}
private function onJsReady():void {
private function on_js_ready():void {
if (!flash.external.ExternalInterface.available) {
trace("js not ready, try later.");
flash.utils.setTimeout(this.onJsReady, 100);
flash.utils.setTimeout(this.on_js_ready, 100);
return;
}
... ... @@ -77,6 +106,7 @@ package
flash.external.ExternalInterface.addCallback("__pause", this.js_call_pause);
flash.external.ExternalInterface.addCallback("__resume", this.js_call_resume);
flash.external.ExternalInterface.addCallback("__dar", this.js_call_dar);
flash.external.ExternalInterface.addCallback("__set_fs", this.js_call_set_fs_size);
var code:int = flash.external.ExternalInterface.call(this.on_player_ready, this.id);
if (code != 0) {
... ... @@ -84,14 +114,14 @@ package
}
}
public function js_call_pause():int {
private function js_call_pause():int {
if (this.stream) {
this.stream.pause();
}
return 0;
}
public function js_call_resume():int {
private function js_call_resume():int {
if (this.stream) {
this.stream.resume();
}
... ... @@ -101,32 +131,52 @@ package
/**
* to set the DAR, for example, DAR=16:9
* @param num, for example, 9.
* use metadata height if 0.
* use user specified height if -1.
* @param den, for example, 16.
* use metadata width if 0.
* use user specified width if -1.
*/
public function js_call_dar(num:int, den:int):int {
if (this.video && num > 0 && den > 0 && this.video.width > 0) {
// set DAR.
// calc the height by DAR
var _height:int = this.w * num / den;
if (_height <= this.h) {
this.video.width = this.w;
this.video.height = _height;
} else {
// height overflow, calc the width by DAR
var _width:int = this.h * den / num;
private function js_call_dar(num:int, den:int):int {
dar_num = num;
dar_den = den;
this.video.width = _width;
this.video.height = this.h;
flash.utils.setTimeout(execute_user_set_dar, 0);
return 0;
}
// align center.
this.video.y = (this.h - this.video.height) / 2;
this.video.x = (this.w - this.video.width) / 2;
}
/**
* set the fullscreen size data.
* @refer the refer fullscreen mode. it can be:
* video: use video orignal size.
* screen: use screen size to rescale video.
* @param percent, the rescale percent, where
* 100 means 100%.
*/
private function js_call_set_fs_size(refer:String, percent:int):int {
fs_refer = refer;
fs_percent = percent;
return 0;
}
/**
* js cannot enter the fullscreen mode, user must click to.
*/
private function on_user_click_video(evt:MouseEvent):void {
if (!this.stage.allowsFullScreen) {
trace("donot allow fullscreen.");
return;
}
// enter fullscreen to get the fullscreen size correctly.
if (this.stage.displayState == StageDisplayState.FULL_SCREEN) {
this.stage.displayState = StageDisplayState.NORMAL;
} else {
this.stage.displayState = StageDisplayState.FULL_SCREEN;
}
}
public function js_call_stop():int {
private function js_call_stop():int {
if (this.stream) {
this.stream.close();
this.stream = null;
... ... @@ -143,17 +193,24 @@ package
return 0;
}
public function js_call_play(url:String, _width:int, _height:int, _buffer_time:Number):int {
private function draw_black_background(_width:int, _height:int):void {
// draw black bg.
this.graphics.beginFill(0x00, 1.0);
this.graphics.drawRect(0, 0, _width, _height);
this.graphics.endFill();
// draw the fs mask.
this.fs_mask.graphics.beginFill(0xff0000, 0);
this.fs_mask.graphics.drawRect(0, 0, _width, _height);
this.fs_mask.graphics.endFill();
}
private function js_call_play(url:String, _width:int, _height:int, _buffer_time:Number):int {
this.url = url;
this.w = _width;
this.h = _height;
trace("start to play url: " + this.url + ", w=" + this.w + ", h=" + this.h);
// draw black bg.
this.graphics.beginFill(0x00, 1.0);
this.graphics.drawRect(0, 0, this.w, this.h);
this.graphics.endFill();
js_call_stop();
this.conn = new NetConnection();
... ... @@ -184,6 +241,11 @@ package
video.attachNetStream(stream);
video.smoothing = true;
addChild(video);
draw_black_background(_width, _height);
// lowest layer, for mask to cover it.
setChildIndex(video, 0);
});
this.conn.connect(this.url.substr(0, this.url.lastIndexOf("/")));
... ... @@ -204,13 +266,37 @@ package
contextMenu.customItems = customItems;
// for js.
var obj:Object = get_video_size_object();
obj.server = 'srs';
obj.contributor = 'winlin';
if (metadata.hasOwnProperty("server")) {
obj.server = metadata.server;
}
if (metadata.hasOwnProperty("contributor")) {
obj.contributor = metadata.contributor;
}
var code:int = flash.external.ExternalInterface.call(on_player_metadata, id, obj);
if (code != 0) {
throw new Error("callback on_player_metadata failed. code=" + code);
}
}
/**
* get the "right" size of video,
* 1. initialize with the original video object size.
* 2. override with metadata size if specified.
* 3. override with codec size if specified.
*/
private function get_video_size_object():Object {
var obj:Object = {
width: video.width,
height: video.height,
server: 'srs',
contributor: 'winlin'
height: video.height
};
// override with metadata size.
if (metadata.hasOwnProperty("width")) {
obj.width = metadata.width;
}
... ... @@ -218,6 +304,7 @@ package
obj.height = metadata.height;
}
// override with codec size.
if (video.videoWidth > 0) {
obj.width = video.videoWidth;
}
... ... @@ -225,17 +312,110 @@ package
obj.height = video.videoHeight;
}
if (metadata.hasOwnProperty("server")) {
obj.server = metadata.server;
return obj;
}
if (metadata.hasOwnProperty("contributor")) {
obj.contributor = metadata.contributor;
/**
* execute the enter fullscreen action.
*/
private function execute_user_enter_fullscreen():void {
if (!fs_refer || fs_percent <= 0) {
return;
}
var code:int = flash.external.ExternalInterface.call(on_player_metadata, id, obj);
if (code != 0) {
throw new Error("callback on_player_metadata failed. code=" + code);
// change to video size if refer to video.
var obj:Object = get_video_size_object();
// get the DAR
var num:int = dar_num;
var den:int = dar_den;
if (num == 0) {
num = obj.height;
}
if (num == -1) {
num = this.stage.fullScreenHeight;
}
if (den == 0) {
den = obj.width;
}
if (den == -1) {
den = this.stage.fullScreenWidth;
}
// for refer is screen.
if (fs_refer == "screen") {
obj = {
width: this.stage.fullScreenWidth,
height: this.stage.fullScreenHeight
};
}
// rescale to fs
update_video_size(num, den, obj.width * fs_percent / 100, obj.height * fs_percent / 100, this.stage.fullScreenWidth, this.stage.fullScreenHeight);
}
/**
* for user set dar, or leave fullscreen to recover the dar.
*/
private function execute_user_set_dar():void {
// get the DAR
var num:int = dar_num;
var den:int = dar_den;
var obj:Object = get_video_size_object();
if (num == 0) {
num = obj.height;
}
if (num == -1) {
num = this.h;
}
if (den == 0) {
den = obj.width;
}
if (den == -1) {
den = this.w;
}
update_video_size(num, den, this.w, this.h, this.w, this.h);
}
/**
* update the video width and height,
* according to the specifies DAR(den:num) and max size(w:h).
* set the position of video(x,y) specifies by size(sw:sh),
* and update the bg to size(sw:sh).
* @param _num/_den the DAR. use to rescale the player together with paper size.
* @param _w/_h the video draw paper size. used to rescale the player together with DAR.
* @param _sw/_wh the stage size, >= paper size. used to center the player.
*/
private function update_video_size(_num:int, _den:int, _w:int, _h:int, _sw:int, _sh:int):void {
if (!this.video || _num <= 0 || _den <= 0) {
return;
}
// set DAR.
// calc the height by DAR
var _height:int = _w * _num / _den;
if (_height <= _h) {
this.video.width = _w;
this.video.height = _height;
} else {
// height overflow, calc the width by DAR
var _width:int = _h * _den / _num;
this.video.width = _width;
this.video.height = _h;
}
// align center.
this.video.x = (_sw - this.video.width) / 2;
this.video.y = (_sh - this.video.height) / 2;
draw_black_background(_sw, _sh);
}
}
}
\ No newline at end of file
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