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/*
* Copyright (C) 2009 Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE COPYRIGHT
* OWNER 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 WebMediaPlayer_h
#define WebMediaPlayer_h
#include "WebTimeRange.h"
#include "WebVideoFrame.h"
#include "platform/WebCanvas.h"
#include "platform/WebString.h"
namespace WebKit {
class WebAudioSourceProvider;
class WebAudioSourceProviderClient;
class WebMediaPlayerClient;
class WebStreamTextureClient;
class WebString;
class WebURL;
struct WebRect;
struct WebSize;
class WebMediaPlayer {
public:
enum NetworkState {
NetworkStateEmpty,
NetworkStateIdle,
NetworkStateLoading,
NetworkStateLoaded,
NetworkStateFormatError,
NetworkStateNetworkError,
NetworkStateDecodeError,
};
enum ReadyState {
ReadyStateHaveNothing,
ReadyStateHaveMetadata,
ReadyStateHaveCurrentData,
ReadyStateHaveFutureData,
ReadyStateHaveEnoughData,
};
enum MovieLoadType {
MovieLoadTypeUnknown,
MovieLoadTypeDownload,
MovieLoadTypeStoredStream,
MovieLoadTypeLiveStream,
};
enum Preload {
PreloadNone,
PreloadMetaData,
PreloadAuto,
};
enum AddIdStatus {
AddIdStatusOk,
AddIdStatusNotSupported,
AddIdStatusReachedIdLimit
};
enum EndOfStreamStatus {
EndOfStreamStatusNoError,
EndOfStreamStatusNetworkError,
EndOfStreamStatusDecodeError,
};
// Represents synchronous exceptions that can be thrown from the Encrypted
// Media methods. This is different from the asynchronous MediaKeyError.
enum MediaKeyException {
MediaKeyExceptionNoError,
MediaKeyExceptionInvalidPlayerState,
MediaKeyExceptionKeySystemNotSupported,
};
virtual ~WebMediaPlayer() {}
virtual void load(const WebURL&) = 0;
virtual void cancelLoad() = 0;
// Playback controls.
virtual void play() = 0;
virtual void pause() = 0;
virtual bool supportsFullscreen() const = 0;
virtual bool supportsSave() const = 0;
virtual void seek(float seconds) = 0;
virtual void setEndTime(float seconds) = 0;
virtual void setRate(float) = 0;
virtual void setVolume(float) = 0;
virtual void setVisible(bool) = 0;
virtual void setPreload(Preload) { };
virtual bool totalBytesKnown() = 0;
virtual const WebTimeRanges& buffered() = 0;
virtual float maxTimeSeekable() const = 0;
virtual void setSize(const WebSize&) = 0;
virtual void paint(WebCanvas*, const WebRect&, uint8_t alpha) = 0;
// True if the loaded media has a playable video/audio track.
virtual bool hasVideo() const = 0;
virtual bool hasAudio() const = 0;
// Dimension of the video.
virtual WebSize naturalSize() const = 0;
// Getters of playback state.
virtual bool paused() const = 0;
virtual bool seeking() const = 0;
virtual float duration() const = 0;
virtual float currentTime() const = 0;
// Get rate of loading the resource.
virtual int dataRate() const = 0;
// Internal states of loading and network.
virtual NetworkState networkState() const = 0;
virtual ReadyState readyState() const = 0;
virtual unsigned long long bytesLoaded() const = 0;
virtual unsigned long long totalBytes() const = 0;
virtual bool hasSingleSecurityOrigin() const = 0;
virtual MovieLoadType movieLoadType() const = 0;
virtual float mediaTimeForTimeValue(float timeValue) const = 0;
virtual unsigned decodedFrameCount() const = 0;
virtual unsigned droppedFrameCount() const = 0;
virtual unsigned audioDecodedByteCount() const = 0;
virtual unsigned videoDecodedByteCount() const = 0;
// This function returns a pointer to a WebVideoFrame, which is
// a WebKit wrapper for a video frame in chromium. This places a lock
// on the frame in chromium, and calls to this method should always be
// followed with a call to putCurrentFrame(). The ownership of this object
// is not transferred to the caller, and the caller should not free the
// returned object.
virtual WebVideoFrame* getCurrentFrame() { return 0; }
// This function releases the lock on the current video frame in Chromium.
// It should always be called after getCurrentFrame(). Frame passed to this
// method should no longer be referenced after the call is made.
virtual void putCurrentFrame(WebVideoFrame*) { }
virtual void setStreamTextureClient(WebStreamTextureClient*) { }
virtual WebAudioSourceProvider* audioSourceProvider() { return 0; }
virtual AddIdStatus sourceAddId(const WebString& id, const WebString& type) { return AddIdStatusNotSupported; }
virtual bool sourceRemoveId(const WebString& id) { return false; }
virtual bool sourceAppend(const unsigned char* data, unsigned length) { return false; }
virtual void sourceEndOfStream(EndOfStreamStatus) { }
// Returns whether keySystem is supported. If true, the result will be
// reported by an event.
virtual MediaKeyException generateKeyRequest(const WebString& keySystem, const unsigned char* initData, unsigned initDataLength) { return MediaKeyExceptionKeySystemNotSupported; }
virtual MediaKeyException addKey(const WebString& keySystem, const unsigned char* key, unsigned keyLength, const unsigned char* initData, unsigned initDataLength, const WebString& sessionId) { return MediaKeyExceptionKeySystemNotSupported; }
virtual MediaKeyException cancelKeyRequest(const WebString& keySystem, const WebString& sessionId) { return MediaKeyExceptionKeySystemNotSupported; }
// Instruct WebMediaPlayer to enter/exit fullscreen.
virtual void enterFullscreen() { }
virtual void exitFullscreen() { }
// Returns true if the player can enter fullscreen.
virtual bool canEnterFullscreen() const { return false; }
};
} // namespace WebKit
#endif
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