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MediaPlayer.h
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MediaPlayer.h
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/*
* Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef MediaPlayer_h
#define MediaPlayer_h
#if ENABLE(VIDEO)
#include "GraphicsTypes3D.h"
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
#include "MediaPlayerProxy.h"
#endif
#include "AudioTrackPrivate.h"
#include "InbandTextTrackPrivate.h"
#include "IntRect.h"
#include "URL.h"
#include "LayoutRect.h"
#include "Timer.h"
#include "VideoTrackPrivate.h"
#include <runtime/Uint8Array.h>
#include <wtf/Forward.h>
#include <wtf/HashSet.h>
#include <wtf/OwnPtr.h>
#include <wtf/Noncopyable.h>
#include <wtf/PassOwnPtr.h>
#include <wtf/text/StringHash.h>
#if USE(ACCELERATED_COMPOSITING)
#include "PlatformLayer.h"
#endif
#if USE(PLATFORM_TEXT_TRACK_MENU)
#include "PlatformTextTrackMenu.h"
#endif
OBJC_CLASS AVPlayer;
OBJC_CLASS QTMovie;
class AVCFPlayer;
class QTMovieGWorld;
class QTMovieVisualContext;
namespace WebCore {
class AudioSourceProvider;
class Document;
#if ENABLE(MEDIA_SOURCE)
class HTMLMediaSource;
#endif
class MediaPlayerPrivateInterface;
class TextTrackRepresentation;
// Structure that will hold every native
// types supported by the current media player.
// We have to do that has multiple media players
// backend can live at runtime.
struct PlatformMedia {
enum {
None,
QTMovieType,
QTMovieGWorldType,
QTMovieVisualContextType,
ChromiumMediaPlayerType,
QtMediaPlayerType,
AVFoundationMediaPlayerType,
AVFoundationCFMediaPlayerType
} type;
union {
QTMovie* qtMovie;
QTMovieGWorld* qtMovieGWorld;
QTMovieVisualContext* qtMovieVisualContext;
MediaPlayerPrivateInterface* chromiumMediaPlayer;
MediaPlayerPrivateInterface* qtMediaPlayer;
AVPlayer* avfMediaPlayer;
AVCFPlayer* avcfMediaPlayer;
} media;
};
struct MediaEngineSupportParameters {
String type;
String codecs;
URL url;
#if ENABLE(ENCRYPTED_MEDIA)
String keySystem;
#endif
#if ENABLE(MEDIA_SOURCE)
bool isMediaSource;
#endif
MediaEngineSupportParameters()
#if ENABLE(MEDIA_SOURCE)
: isMediaSource(false)
#endif
{
}
};
extern const PlatformMedia NoPlatformMedia;
class CachedResourceLoader;
class ContentType;
class FrameView;
class GraphicsContext;
class GraphicsContext3D;
class IntRect;
class IntSize;
class MediaPlayer;
struct MediaPlayerFactory;
class TimeRanges;
class HostWindow;
#if PLATFORM(WIN) && USE(AVFOUNDATION)
struct GraphicsDeviceAdapter;
#endif
class MediaPlayerClient {
public:
enum CORSMode { Unspecified, Anonymous, UseCredentials };
virtual ~MediaPlayerClient() { }
// Get the document which the media player is owned by
virtual Document* mediaPlayerOwningDocument() { return 0; }
// the network state has changed
virtual void mediaPlayerNetworkStateChanged(MediaPlayer*) { }
// the ready state has changed
virtual void mediaPlayerReadyStateChanged(MediaPlayer*) { }
// the volume state has changed
virtual void mediaPlayerVolumeChanged(MediaPlayer*) { }
// the mute state has changed
virtual void mediaPlayerMuteChanged(MediaPlayer*) { }
// time has jumped, eg. not as a result of normal playback
virtual void mediaPlayerTimeChanged(MediaPlayer*) { }
// the media file duration has changed, or is now known
virtual void mediaPlayerDurationChanged(MediaPlayer*) { }
// the playback rate has changed
virtual void mediaPlayerRateChanged(MediaPlayer*) { }
// the play/pause status changed
virtual void mediaPlayerPlaybackStateChanged(MediaPlayer*) { }
// The MediaPlayer has found potentially problematic media content.
// This is used internally to trigger swapping from a <video>
// element to an <embed> in standalone documents
virtual void mediaPlayerSawUnsupportedTracks(MediaPlayer*) { }
// The MediaPlayer could not discover an engine which supports the requested resource.
virtual void mediaPlayerResourceNotSupported(MediaPlayer*) { }
// Presentation-related methods
// a new frame of video is available
virtual void mediaPlayerRepaint(MediaPlayer*) { }
// the movie size has changed
virtual void mediaPlayerSizeChanged(MediaPlayer*) { }
virtual void mediaPlayerEngineUpdated(MediaPlayer*) { }
// The first frame of video is available to render. A media engine need only make this callback if the
// first frame is not available immediately when prepareForRendering is called.
virtual void mediaPlayerFirstVideoFrameAvailable(MediaPlayer*) { }
// A characteristic of the media file, eg. video, audio, closed captions, etc, has changed.
virtual void mediaPlayerCharacteristicChanged(MediaPlayer*) { }
#if USE(ACCELERATED_COMPOSITING)
// whether the rendering system can accelerate the display of this MediaPlayer.
virtual bool mediaPlayerRenderingCanBeAccelerated(MediaPlayer*) { return false; }
// called when the media player's rendering mode changed, which indicates a change in the
// availability of the platformLayer().
virtual void mediaPlayerRenderingModeChanged(MediaPlayer*) { }
#endif
#if PLATFORM(WIN) && USE(AVFOUNDATION)
virtual GraphicsDeviceAdapter* mediaPlayerGraphicsDeviceAdapter(const MediaPlayer*) const { return 0; }
#endif
#if ENABLE(ENCRYPTED_MEDIA)
enum MediaKeyErrorCode { UnknownError = 1, ClientError, ServiceError, OutputError, HardwareChangeError, DomainError };
virtual void mediaPlayerKeyAdded(MediaPlayer*, const String& /* keySystem */, const String& /* sessionId */) { }
virtual void mediaPlayerKeyError(MediaPlayer*, const String& /* keySystem */, const String& /* sessionId */, MediaKeyErrorCode, unsigned short /* systemCode */) { }
virtual void mediaPlayerKeyMessage(MediaPlayer*, const String& /* keySystem */, const String& /* sessionId */, const unsigned char* /* message */, unsigned /* messageLength */, const URL& /* defaultURL */) { }
virtual bool mediaPlayerKeyNeeded(MediaPlayer*, const String& /* keySystem */, const String& /* sessionId */, const unsigned char* /* initData */, unsigned /* initDataLength */) { return false; }
#endif
#if ENABLE(ENCRYPTED_MEDIA_V2)
virtual bool mediaPlayerKeyNeeded(MediaPlayer*, Uint8Array*) { return false; }
#endif
virtual String mediaPlayerReferrer() const { return String(); }
virtual String mediaPlayerUserAgent() const { return String(); }
virtual CORSMode mediaPlayerCORSMode() const { return Unspecified; }
virtual void mediaPlayerEnterFullscreen() { }
virtual void mediaPlayerExitFullscreen() { }
virtual bool mediaPlayerIsFullscreen() const { return false; }
virtual bool mediaPlayerIsFullscreenPermitted() const { return false; }
virtual bool mediaPlayerIsVideo() const { return false; }
virtual LayoutRect mediaPlayerContentBoxRect() const { return LayoutRect(); }
virtual void mediaPlayerSetSize(const IntSize&) { }
virtual void mediaPlayerPause() { }
virtual void mediaPlayerPlay() { }
virtual bool mediaPlayerPlatformVolumeConfigurationRequired() const { return false; }
virtual bool mediaPlayerIsPaused() const { return true; }
virtual bool mediaPlayerIsLooping() const { return false; }
virtual HostWindow* mediaPlayerHostWindow() { return 0; }
virtual IntRect mediaPlayerWindowClipRect() { return IntRect(); }
virtual CachedResourceLoader* mediaPlayerCachedResourceLoader() { return 0; }
#if ENABLE(VIDEO_TRACK)
virtual void mediaPlayerDidAddAudioTrack(PassRefPtr<AudioTrackPrivate>) { }
virtual void mediaPlayerDidAddTextTrack(PassRefPtr<InbandTextTrackPrivate>) { }
virtual void mediaPlayerDidAddVideoTrack(PassRefPtr<VideoTrackPrivate>) { }
virtual void mediaPlayerDidRemoveAudioTrack(PassRefPtr<AudioTrackPrivate>) { }
virtual void mediaPlayerDidRemoveTextTrack(PassRefPtr<InbandTextTrackPrivate>) { }
virtual void mediaPlayerDidRemoveVideoTrack(PassRefPtr<VideoTrackPrivate>) { }
virtual void textTrackRepresentationBoundsChanged(const IntRect&) { }
#endif
};
class MediaPlayerSupportsTypeClient {
public:
virtual ~MediaPlayerSupportsTypeClient() { }
virtual bool mediaPlayerNeedsSiteSpecificHacks() const { return false; }
virtual String mediaPlayerDocumentHost() const { return String(); }
};
class MediaPlayer {
WTF_MAKE_NONCOPYABLE(MediaPlayer); WTF_MAKE_FAST_ALLOCATED;
public:
static PassOwnPtr<MediaPlayer> create(MediaPlayerClient* client)
{
return adoptPtr(new MediaPlayer(client));
}
virtual ~MediaPlayer();
// Media engine support.
enum SupportsType { IsNotSupported, IsSupported, MayBeSupported };
static MediaPlayer::SupportsType supportsType(const MediaEngineSupportParameters&, const MediaPlayerSupportsTypeClient*);
static void getSupportedTypes(HashSet<String>&);
static bool isAvailable();
static void getSitesInMediaCache(Vector<String>&);
static void clearMediaCache();
static void clearMediaCacheForSite(const String&);
bool supportsFullscreen() const;
bool supportsSave() const;
bool supportsScanning() const;
bool requiresImmediateCompositing() const;
PlatformMedia platformMedia() const;
#if USE(ACCELERATED_COMPOSITING)
PlatformLayer* platformLayer() const;
#endif
IntSize naturalSize();
bool hasVideo() const;
bool hasAudio() const;
void setFrameView(FrameView* frameView) { m_frameView = frameView; }
FrameView* frameView() { return m_frameView; }
bool inMediaDocument();
IntSize size() const { return m_size; }
void setSize(const IntSize& size);
bool load(const URL&, const ContentType&, const String& keySystem);
#if ENABLE(MEDIA_SOURCE)
bool load(const URL&, const ContentType&, PassRefPtr<HTMLMediaSource>);
#endif
void cancelLoad();
bool visible() const;
void setVisible(bool);
void prepareToPlay();
void play();
void pause();
#if ENABLE(ENCRYPTED_MEDIA)
// Represents synchronous exceptions that can be thrown from the Encrypted Media methods.
// This is different from the asynchronous MediaKeyError.
enum MediaKeyException { NoError, InvalidPlayerState, KeySystemNotSupported };
MediaKeyException generateKeyRequest(const String& keySystem, const unsigned char* initData, unsigned initDataLength);
MediaKeyException addKey(const String& keySystem, const unsigned char* key, unsigned keyLength, const unsigned char* initData, unsigned initDataLength, const String& sessionId);
MediaKeyException cancelKeyRequest(const String& keySystem, const String& sessionId);
#endif
bool paused() const;
bool seeking() const;
static double invalidTime() { return -1.0;}
double duration() const;
double currentTime() const;
void seek(double time);
void seekWithTolerance(double time, double negativeTolerance, double positiveTolerance);
double startTime() const;
double initialTime() const;
double rate() const;
void setRate(double);
bool preservesPitch() const;
void setPreservesPitch(bool);
PassRefPtr<TimeRanges> buffered();
PassRefPtr<TimeRanges> seekable();
double minTimeSeekable();
double maxTimeSeekable();
bool didLoadingProgress();
double volume() const;
void setVolume(double);
bool platformVolumeConfigurationRequired() const { return m_mediaPlayerClient->mediaPlayerPlatformVolumeConfigurationRequired(); }
bool muted() const;
void setMuted(bool);
bool hasClosedCaptions() const;
void setClosedCaptionsVisible(bool closedCaptionsVisible);
bool autoplay() const;
void setAutoplay(bool);
void paint(GraphicsContext*, const IntRect&);
void paintCurrentFrameInContext(GraphicsContext*, const IntRect&);
// copyVideoTextureToPlatformTexture() is used to do the GPU-GPU textures copy without a readback to system memory.
// The first five parameters denote the corresponding GraphicsContext, destination texture, requested level, requested type and the required internalFormat for destination texture.
// The last two parameters premultiplyAlpha and flipY denote whether addtional premultiplyAlpha and flip operation are required during the copy.
// It returns true on success and false on failure.
// In the GPU-GPU textures copy, the source texture(Video texture) should have valid target, internalFormat and size, etc.
// The destination texture may need to be resized to to the dimensions of the source texture or re-defined to the required internalFormat.
// The current restrictions require that format shoud be RGB or RGBA, type should be UNSIGNED_BYTE and level should be 0. It may be lifted in the future.
// Each platform port can have its own implementation on this function. The default implementation for it is a single "return false" in MediaPlayerPrivate.h.
// In chromium, the implementation is based on GL_CHROMIUM_copy_texture extension which is documented at
// http://src.chromium.org/viewvc/chrome/trunk/src/gpu/GLES2/extensions/CHROMIUM/CHROMIUM_copy_texture.txt and implemented at
// http://src.chromium.org/viewvc/chrome/trunk/src/gpu/command_buffer/service/gles2_cmd_copy_texture_chromium.cc via shaders.
bool copyVideoTextureToPlatformTexture(GraphicsContext3D*, Platform3DObject texture, GC3Dint level, GC3Denum type, GC3Denum internalFormat, bool premultiplyAlpha, bool flipY);
enum NetworkState { Empty, Idle, Loading, Loaded, FormatError, NetworkError, DecodeError };
NetworkState networkState();
enum ReadyState { HaveNothing, HaveMetadata, HaveCurrentData, HaveFutureData, HaveEnoughData };
ReadyState readyState();
enum MovieLoadType { Unknown, Download, StoredStream, LiveStream };
MovieLoadType movieLoadType() const;
enum Preload { None, MetaData, Auto };
Preload preload() const;
void setPreload(Preload);
void networkStateChanged();
void readyStateChanged();
void volumeChanged(double);
void muteChanged(bool);
void timeChanged();
void sizeChanged();
void rateChanged();
void playbackStateChanged();
void durationChanged();
void firstVideoFrameAvailable();
void characteristicChanged();
void repaint();
MediaPlayerClient* mediaPlayerClient() const { return m_mediaPlayerClient; }
void clearMediaPlayerClient() { m_mediaPlayerClient = 0; }
bool hasAvailableVideoFrame() const;
void prepareForRendering();
bool canLoadPoster() const;
void setPoster(const String&);
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
void deliverNotification(MediaPlayerProxyNotificationType notification);
void setMediaPlayerProxy(WebMediaPlayerProxy* proxy);
void setControls(bool);
#endif
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO) || USE(NATIVE_FULLSCREEN_VIDEO)
void enterFullscreen();
void exitFullscreen();
#endif
#if USE(NATIVE_FULLSCREEN_VIDEO)
bool canEnterFullscreen() const;
#endif
#if USE(ACCELERATED_COMPOSITING)
// whether accelerated rendering is supported by the media engine for the current media.
bool supportsAcceleratedRendering() const;
// called when the rendering system flips the into or out of accelerated rendering mode.
void acceleratedRenderingStateChanged();
#endif
bool shouldMaintainAspectRatio() const;
void setShouldMaintainAspectRatio(bool);
#if PLATFORM(WIN) && USE(AVFOUNDATION)
GraphicsDeviceAdapter* graphicsDeviceAdapter() const;
#endif
bool hasSingleSecurityOrigin() const;
bool didPassCORSAccessCheck() const;
double mediaTimeForTimeValue(double) const;
double maximumDurationToCacheMediaTime() const;
unsigned decodedFrameCount() const;
unsigned droppedFrameCount() const;
unsigned audioDecodedByteCount() const;
unsigned videoDecodedByteCount() const;
void setPrivateBrowsingMode(bool);
#if ENABLE(WEB_AUDIO)
AudioSourceProvider* audioSourceProvider();
#endif
#if ENABLE(ENCRYPTED_MEDIA)
void keyAdded(const String& keySystem, const String& sessionId);
void keyError(const String& keySystem, const String& sessionId, MediaPlayerClient::MediaKeyErrorCode, unsigned short systemCode);
void keyMessage(const String& keySystem, const String& sessionId, const unsigned char* message, unsigned messageLength, const URL& defaultURL);
bool keyNeeded(const String& keySystem, const String& sessionId, const unsigned char* initData, unsigned initDataLength);
#endif
#if ENABLE(ENCRYPTED_MEDIA_V2)
bool keyNeeded(Uint8Array* initData);
#endif
String referrer() const;
String userAgent() const;
String engineDescription() const;
CachedResourceLoader* cachedResourceLoader();
#if ENABLE(VIDEO_TRACK)
void addAudioTrack(PassRefPtr<AudioTrackPrivate>);
void addTextTrack(PassRefPtr<InbandTextTrackPrivate>);
void addVideoTrack(PassRefPtr<VideoTrackPrivate>);
void removeAudioTrack(PassRefPtr<AudioTrackPrivate>);
void removeTextTrack(PassRefPtr<InbandTextTrackPrivate>);
void removeVideoTrack(PassRefPtr<VideoTrackPrivate>);
bool requiresTextTrackRepresentation() const;
void setTextTrackRepresentation(TextTrackRepresentation*);
#endif
static void resetMediaEngines();
#if USE(PLATFORM_TEXT_TRACK_MENU)
bool implementsTextTrackControls() const;
PassRefPtr<PlatformTextTrackMenuInterface> textTrackMenu();
#endif
#if USE(GSTREAMER)
void simulateAudioInterruption();
#endif
String languageOfPrimaryAudioTrack() const;
size_t extraMemoryCost() const;
private:
MediaPlayer(MediaPlayerClient*);
MediaPlayerFactory* nextBestMediaEngine(MediaPlayerFactory*) const;
void loadWithNextMediaEngine(MediaPlayerFactory*);
void reloadTimerFired(Timer<MediaPlayer>*);
static void initializeMediaEngines();
MediaPlayerClient* m_mediaPlayerClient;
Timer<MediaPlayer> m_reloadTimer;
OwnPtr<MediaPlayerPrivateInterface> m_private;
MediaPlayerFactory* m_currentMediaEngine;
URL m_url;
String m_contentMIMEType;
String m_contentTypeCodecs;
String m_keySystem;
FrameView* m_frameView;
IntSize m_size;
Preload m_preload;
bool m_visible;
double m_rate;
double m_volume;
bool m_muted;
bool m_preservesPitch;
bool m_privateBrowsing;
bool m_shouldPrepareToRender;
bool m_contentMIMETypeWasInferredFromExtension;
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
WebMediaPlayerProxy* m_playerProxy; // not owned or used, passed to m_private
#endif
#if ENABLE(MEDIA_SOURCE)
RefPtr<HTMLMediaSource> m_mediaSource;
#endif
};
typedef PassOwnPtr<MediaPlayerPrivateInterface> (*CreateMediaEnginePlayer)(MediaPlayer*);
typedef void (*MediaEngineSupportedTypes)(HashSet<String>& types);
typedef MediaPlayer::SupportsType (*MediaEngineSupportsType)(const MediaEngineSupportParameters& parameters);
typedef void (*MediaEngineGetSitesInMediaCache)(Vector<String>&);
typedef void (*MediaEngineClearMediaCache)();
typedef void (*MediaEngineClearMediaCacheForSite)(const String&);
typedef void (*MediaEngineRegistrar)(CreateMediaEnginePlayer, MediaEngineSupportedTypes, MediaEngineSupportsType,
MediaEngineGetSitesInMediaCache, MediaEngineClearMediaCache, MediaEngineClearMediaCacheForSite);
typedef void (*MediaEngineRegister)(MediaEngineRegistrar);
class MediaPlayerFactorySupport {
public:
static void callRegisterMediaEngine(MediaEngineRegister);
};
}
#endif // ENABLE(VIDEO)
#endif