1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619
|
/*
Copyright 2008 Google Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
#include "object_videoplayer.h"
#include <vector>
#include "basic_element.h"
#include "canvas_interface.h"
#include "elements.h"
#include "element_factory.h"
#include "file_manager_interface.h"
#include "object_element.h"
#include "slot.h"
#include "signals.h"
#include "video_element_base.h"
#include "view.h"
#include "small_object.h"
namespace ggadget {
static const char kOnStateChangeEvent[] = "PlayStateChange";
static const char kOnPositionChangeEvent[] = "PositionChange";
static const char kOnMediaChangeEvent[] = "MediaChange";
static const char kOnPlaylistChangeEvent[] = "PlaylistChange";
static const char kOnPlayerDockedStateChangeEvent[] = "PlayerDockedStateChange";
static const int kMaxWmpVolume = 100;
static const int kMinWmpVolume = 0;
// Definition of wmplayer play state.
enum WMPState {
WMP_STATE_UNDEFINED = 0,
WMP_STATE_STOPPED = 1,
WMP_STATE_PAUSED = 2,
WMP_STATE_PLAYING = 3,
WMP_STATE_ENDED = 8,
WMP_STATE_READY = 10,
};
class ObjectVideoPlayer::Impl : public SmallObject<> {
public:
class Media : public ScriptableHelperDefault {
public:
DEFINE_CLASS_ID(0x72d10c43fea34b38, ScriptableInterface);
Media(const std::string &uri) : uri_(uri), duration_(0) {
name_ = uri.substr(uri.find_last_of('/') + 1);
size_t n = name_.find_last_of('.');
if (n != std::string::npos)
name_ = name_.substr(0, n);
RegisterProperty("name",
NewSlot(this, &Media::GetName),
NewSlot(this, &Media::SetName));
RegisterProperty("sourceURL", NewSlot(this, &Media::GetUri), NULL);
RegisterProperty("duration", NewSlot(this, &Media::GetDuration), NULL);
RegisterMethod("getItemInfo", NewSlot(this, &Media::GetItemInfo));
RegisterMethod("setItemInfo", NewSlot(this, &Media::SetItemInfo));
RegisterMethod("isReadOnlyItem", NewSlot(this, &Media::IsReadOnlyItem));
}
~Media() { }
// Gets and sets of scriptable properties.
std::string GetName() { return name_; }
void SetName(const std::string &name) { name_ = name; }
std::string GetUri() { return uri_; }
double GetDuration() { return duration_; }
std::string GetItemInfo(const std::string& attr) {
if (attr.compare("Author") == 0)
return author_;
else if (attr.compare("Title") == 0)
return title_;
else if (attr.compare("WM/AlbumTitle") == 0)
return album_;
else
return "";
}
void SetItemInfo(const std::string& attr, const std::string& value) {
GGL_UNUSED(attr);
GGL_UNUSED(value);
// Currently, users are not allowed to modify the tag info.
}
bool IsReadOnlyItem(const std::string& attr) {
GGL_UNUSED(attr);
return true;
}
std::string uri_, name_;
std::string author_, title_, album_;
double duration_;
};
class Playlist : public ScriptableHelperDefault {
public:
DEFINE_CLASS_ID(0x209b1644318849d7, ScriptableInterface);
Playlist(const std::string &name) : name_(name), current_(0) {
RegisterProperty("count", NewSlot(this, &Playlist::GetCount), NULL);
RegisterProperty("name",
NewSlot(this, &Playlist::GetName),
NewSlot(this, &Playlist::SetName));
RegisterMethod("appendItem", NewSlot(this, &Playlist::AppendItem));
}
~Playlist() {
if (items_.size()) {
for (size_t i = 0; i < items_.size(); i++)
// Don't use delete, the media may be also being used by others.
items_[i]->Unref();
}
}
Media *GetFirstMedia() {
current_ = 0;
return items_.size() ? items_[0] : NULL;
}
Media *GetPreviousMedia(bool loop) {
if (current_ > 0) {
current_--;
return items_[current_];
} else if (loop && items_.size()) {
current_ = items_.size() - 1;
return items_[current_];
} else {
return NULL;
}
}
Media *GetNextMedia(bool loop) {
if (current_ + 1 < items_.size()) {
current_++;
return items_[current_];
} else if (loop && items_.size()) {
current_ = 0;
return items_[current_];
} else {
return NULL;
}
}
size_t GetCount() { return items_.size(); }
std::string GetName() { return name_; }
void SetName(const std::string &name) { name_ = name; }
void AppendItem(Media *media) {
media->Ref();
items_.push_back(media);
// Let current point to the last item, so that the first call of
// GetNextMedia() will get the first media.
current_ = items_.size() - 1;
}
std::string name_;
std::vector<Media *> items_;
size_t current_;
};
Impl(ObjectVideoPlayer *owner, View *view)
: owner_(owner), view_(view),
current_media_(NULL),
current_playlist_(NULL),
auto_start_(true),
loop_(false) {
// Create the video element.
// Although the ObjectVideoPlayer cannot have any children(otherwise,
// the children will be exposed to the outside code), it can be (actually
// must be) the parent of the video element, otherwise, video element has
// no way to know the size of area in which the video is shown.
video_element_ = down_cast<VideoElementBase *>(
view_->GetElementFactory()->CreateElement("video", view_, "video"));
if (!video_element_) {
return;
}
video_element_->SetParentElement(owner_);
video_element_->ConnectOnStateChangeEvent(NewSlot(this,
&Impl::OnStateChange));
video_element_->ConnectOnMediaChangeEvent(NewSlot(this,
&Impl::OnMediaChange));
video_element_->SetRelativeX(0);
video_element_->SetRelativeY(0);
video_element_->SetRelativeWidth(1.0);
video_element_->SetRelativeHeight(1.0);
}
void DoRegister() {
controls_.RegisterProperty(
"currentPosition",
NewSlot(video_element_, &VideoElementBase::GetCurrentPosition),
NewSlot(video_element_, &VideoElementBase::SetCurrentPosition));
controls_.RegisterMethod("isAvailable", NewSlot(this, &Impl::IsAvailable));
controls_.RegisterMethod("play", NewSlot(this, &Impl::Play));
controls_.RegisterMethod("playItem",
NewSlot(this, &Impl::SetCurrentMedia, false));
controls_.RegisterMethod("pause", NewSlot(this, &Impl::Pause));
controls_.RegisterMethod("stop", NewSlot(this, &Impl::Stop));
controls_.RegisterMethod("previous",
// Always loops for previous().
NewSlot(this, &Impl::PlayPrevious, true));
controls_.RegisterMethod("next",
// Always loops for next().
NewSlot(this, &Impl::PlayNext, true));
controls_.RegisterMethod("fastForward", NewSlot(Dummy));
controls_.RegisterMethod("fastReverse", NewSlot(Dummy));
controls_.RegisterMethod("step", NewSlot(Dummy));
controls_.RegisterProperty("currentItem",
NewSlot(this, &Impl::GetCurrentMedia),
NewSlot(this, &Impl::SetCurrentMedia, true));
settings_.RegisterMethod("isAvailable", NewSlot(this, &Impl::IsAvailable));
settings_.RegisterMethod("getMode", NewSlot(this, &Impl::GetMode));
settings_.RegisterMethod("setMode", NewSlot(this, &Impl::SetMode));
settings_.RegisterMethod("requestMediaAccessRights",
NewSlot(this, &Impl::RequestMediaAccessRights));
settings_.RegisterProperty("autoStart",
NewSlot(this, &Impl::IsAutoStart),
NewSlot(this, &Impl::SetAutoStart));
settings_.RegisterProperty("volume",
NewSlot(this, &Impl::GetVolume),
NewSlot(this, &Impl::SetVolume));
settings_.RegisterProperty(
"balance",
NewSlot(video_element_, &VideoElementBase::GetBalance),
NewSlot(video_element_, &VideoElementBase::SetBalance));
settings_.RegisterProperty(
"mute",
NewSlot(video_element_, &VideoElementBase::IsMute),
NewSlot(video_element_, &VideoElementBase::SetMute));
application_.RegisterConstant("hasDisplay", true);
application_.RegisterConstant("playerDocked", true);
application_.RegisterMethod("switchToControl", NewSlot(Dummy));
application_.RegisterMethod("switchToPlayerApplication", NewSlot(Dummy));
owner_->RegisterConstant("controls", &controls_);
owner_->RegisterConstant("settings", &settings_);
owner_->RegisterConstant("playerApplication", &application_);
owner_->RegisterProperty("currentMedia",
NewSlot(this, &Impl::GetCurrentMedia),
NewSlot(this, &Impl::SetCurrentMedia, true));
owner_->RegisterProperty("currentPlaylist",
NewSlot(this, &Impl::GetCurrentPlaylist),
NewSlot(this, &Impl::SetCurrentPlaylist));
owner_->RegisterProperty("playState",
NewSlot(this, &Impl::GetState), NULL);
owner_->RegisterProperty("url",
NewSlot(this, &Impl::GetURL),
NewSlot(this, &Impl::SetURL));
owner_->RegisterMethod("close", NewSlot(this, &Impl::CloseCurrentPlaylist));
owner_->RegisterMethod("newMedia", NewSlot(this, &Impl::NewMedia));
owner_->RegisterMethod("newPlaylist", NewSlot(this, &Impl::NewPlaylist));
owner_->RegisterMethod("launchURL",
NewSlot(owner_->GetView(), &View::OpenURL));
owner_->RegisterProperty("enableContextMenu",
NewFixedGetterSlot(Variant(false)),
NewSlot(DummySetter));
owner_->RegisterProperty("enableErrorDialogs",
NewFixedGetterSlot(Variant(false)),
NewSlot(DummySetter));
owner_->RegisterProperty("uiMode",
NewSlot(this, &Impl::GetUIMode),
NewSlot(this, &Impl::SetUIMode));
BasicElement *parent = owner_->GetParentElement();
parent->RegisterSignal(kOnStateChangeEvent, &on_state_change_event_);
parent->RegisterSignal(kOnPositionChangeEvent, &on_position_change_event_);
parent->RegisterSignal(kOnMediaChangeEvent, &on_media_change_event_);
parent->RegisterSignal(kOnPlaylistChangeEvent, &on_playlist_change_event_);
parent->RegisterSignal(kOnPlayerDockedStateChangeEvent,
&on_player_docked_state_change_event_);
parent->RegisterProperty("wmpServiceType",
NewFixedGetterSlot(Variant("Local")),
NewSlot(DummySetter));
parent->RegisterProperty("wmpSkin",
NewFixedGetterSlot(Variant("")),
NewSlot(DummySetter));
}
~Impl() {
delete video_element_;
if (current_media_)
current_media_->Unref();
if (current_playlist_)
current_playlist_->Unref();
}
static void Dummy() { }
bool IsAutoStart() { return auto_start_; }
void SetAutoStart(bool auto_start) { auto_start_ = auto_start; }
int GetVolume() {
int volume = video_element_->GetVolume();
double percent =
static_cast<double>(volume - VideoElementBase::kMinVolume) /
(VideoElementBase::kMaxVolume - VideoElementBase::kMinVolume);
return static_cast<int>(percent * (kMaxWmpVolume - kMinWmpVolume));
}
void SetVolume(int volume) {
double percent = static_cast<double>(volume - kMinWmpVolume) /
(kMaxWmpVolume - kMinWmpVolume);
double fvolume = VideoElementBase::kMinVolume +
percent * (VideoElementBase::kMaxVolume - VideoElementBase::kMinVolume);
video_element_->SetVolume(static_cast<int>(fvolume));
}
bool IsAvailable(const std::string &name) {
if (name == "previous" || name == "next" || name == "currentItem")
return current_playlist_ && current_playlist_->GetCount();
return video_element_->IsAvailable(name);
}
void Play() {
if (current_media_) {
if (current_media_->uri_ != video_element_->GetSrc()) {
video_element_->Stop();
video_element_->SetSrc(current_media_->uri_);
}
video_element_->Play();
}
}
void Pause() {
video_element_->Pause();
}
void Stop() {
video_element_->Stop();
on_position_change_event_();
}
void SetCurrentPosition(double position) {
video_element_->SetCurrentPosition(position);
on_position_change_event_();
}
void PlayPrevious(bool loop) {
Media *previous;
if (current_playlist_ &&
(previous = current_playlist_->GetPreviousMedia(loop))) {
SetCurrentMediaInternal(previous, true, true);
}
}
void PlayNext(bool loop) {
Media *next;
if (current_playlist_ &&
(next = current_playlist_->GetNextMedia(loop))) {
SetCurrentMediaInternal(next, true, true);
}
}
const char *GetURL() {
return video_element_->GetSrc().c_str();
}
void SetURL(const char *url) {
if (!url || !*url)
return;
Media *media = NewMedia(url);
if (media)
SetCurrentMedia(media, true);
}
WMPState GetState() {
VideoElementBase::State state = video_element_->GetState();
switch (state) {
case VideoElementBase::STATE_READY:
return WMP_STATE_READY;
case VideoElementBase::STATE_PLAYING:
return WMP_STATE_PLAYING;
case VideoElementBase::STATE_PAUSED:
return WMP_STATE_PAUSED;
case VideoElementBase::STATE_STOPPED:
return WMP_STATE_STOPPED;
case VideoElementBase::STATE_ENDED:
return WMP_STATE_ENDED;
default:
return WMP_STATE_UNDEFINED;
}
}
void OnStateChange() {
on_state_change_event_();
// Turn to the next video in the playlist if the current video is ended.
if (video_element_->GetState() == VideoElementBase::STATE_ENDED)
PlayNext(loop_);
}
void OnMediaChange() {
if (current_media_) {
current_media_->duration_ = video_element_->GetDuration();
current_media_->author_ =
video_element_->GetTagInfo(VideoElementBase::TAG_AUTHOR);
current_media_->title_ =
video_element_->GetTagInfo(VideoElementBase::TAG_TITLE);
current_media_->album_ =
video_element_->GetTagInfo(VideoElementBase::TAG_ALBUM);
on_media_change_event_();
}
}
Media *NewMedia(const char *uri) {
if (!uri || !*uri) return NULL;
std::string real_uri;
if (strstr(uri, "://")) {
real_uri = uri;
} else if (*uri == '/') {
real_uri = std::string("file://") + uri;
} else {
// It may be a relative file name under the base path of the gadget.
std::string extracted_file;
FileManagerInterface *file_manager = view_->GetFileManager();
if (!file_manager || !file_manager->ExtractFile(uri, &extracted_file))
return NULL;
real_uri = "file://" + extracted_file;
}
return new Media(real_uri);
}
Media *GetCurrentMedia() {
return current_media_;
}
bool SetCurrentMediaInternal(Media *media, bool auto_start, bool rewind) {
if (!media || current_media_ == media)
return false;
if (current_media_)
CloseCurrentMedia();
current_media_ = media;
current_media_->Ref();
if (rewind)
Stop();
if (auto_start)
Play();
return true;
}
bool SetCurrentMedia(Media *media, bool rewind) {
return SetCurrentMediaInternal(media, auto_start_, rewind);
}
Playlist *NewPlaylist(const char *name, const char *meta_file) {
GGL_UNUSED(meta_file);
// We don't use any meta file for playlist. The parameter exists for
// interface compatibility.
if (name) {
Playlist *new_playlist = new Playlist(name);
return new_playlist;
}
return NULL;
}
Playlist *GetCurrentPlaylist() {
return current_playlist_;
}
bool SetCurrentPlaylist(Playlist *playlist) {
if (!playlist || current_playlist_ == playlist)
return false;
if (current_playlist_)
CloseCurrentPlaylist();
current_playlist_ = playlist;
current_playlist_->Ref();
on_playlist_change_event_();
return SetCurrentMedia(current_playlist_->GetFirstMedia(), true);
}
void CloseCurrentMedia() {
if (current_media_) {
video_element_->Stop();
current_media_->Unref();
current_media_ = NULL;
}
}
void CloseCurrentPlaylist() {
if (current_playlist_) {
CloseCurrentMedia();
current_playlist_->Unref();
current_playlist_ = NULL;
}
}
std::string GetUIMode() {
return video_element_->IsVisible() ? "none" : "invisible";
}
void SetUIMode(const std::string &uimode) {
video_element_->SetVisible(uimode != "invisible");
}
bool GetMode(const std::string &mode) {
return mode == "loop" ? loop_ : false;
}
void SetMode(const std::string &mode, bool state) {
if (mode == "loop")
loop_ = state;
}
bool RequestMediaAccessRights(const std::string &access) {
GGL_UNUSED(access);
return true;
}
ObjectVideoPlayer *owner_;
View *view_;
// The real play backend we wrap.
VideoElementBase *video_element_;
Media *current_media_;
Playlist *current_playlist_;
NativeOwnedScriptable<UINT64_C(0x42a88e66ff444ba1)> controls_;
NativeOwnedScriptable<UINT64_C(0xde2169669ebf4b61)> settings_;
NativeOwnedScriptable<UINT64_C(0x1af44fe45e404eae)> application_;
EventSignal on_state_change_event_;
EventSignal on_position_change_event_;
EventSignal on_media_change_event_;
EventSignal on_playlist_change_event_;
// Never fired.
EventSignal on_player_docked_state_change_event_;
// Indicates whether to automatically call Play() after current media or
// playlist is changed.
bool auto_start_ : 1;
// Indicates whether to automatically loop to the first media when the last
// media finishes. It doesn't affect previous() and next() calls.
bool loop_ : 1;
};
ObjectVideoPlayer::ObjectVideoPlayer(View *view, const char *name)
: BasicElement(view, "object", name, false) {
SetEnabled(true);
impl_ = new Impl(this, view);
if (!impl_->video_element_)
return;
SetRelativeX(0);
SetRelativeY(0);
SetRelativeWidth(1.0);
SetRelativeHeight(1.0);
}
ObjectVideoPlayer::~ObjectVideoPlayer() {
delete impl_;
}
BasicElement *ObjectVideoPlayer::CreateInstance(View *view, const char *name) {
ObjectVideoPlayer *self = new ObjectVideoPlayer(view, name);
if (!self->impl_->video_element_) {
delete self;
return NULL;
}
return self;
}
void ObjectVideoPlayer::Layout() {
BasicElement::Layout();
if (impl_->video_element_) {
impl_->video_element_->Layout();
}
}
void ObjectVideoPlayer::DoClassRegister() {
// Don't register properties inherited from BasicElement.
// Properties of this object are exposed to the outside code by the 'object'
// property of the belonging object element.
}
void ObjectVideoPlayer::DoRegister() {
// Don't register properties inherited from BasicElement.
// Properties of this object are exposed to the outside code by the 'object'
// property of the belonging object element.
impl_->DoRegister();
}
void ObjectVideoPlayer::DoDraw(CanvasInterface *canvas) {
if (canvas && impl_->video_element_) {
impl_->video_element_->Draw(canvas);
}
}
void ObjectVideoPlayer::AggregateMoreClipRegion(const Rectangle &boundary,
ClipRegion *region) {
if (impl_->video_element_) {
impl_->video_element_->AggregateClipRegion(boundary, region);
}
}
} // namespace ggadget
|