Revert 124780 - Create a MediaSource object.

Source/WebCore/Modules/mediasource/MediaSource.cpp

-/*
- * Copyright (C) 2012 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.
- */
-
-#include "config.h"
-#include "MediaSource.h"
-
-#if ENABLE(MEDIA_SOURCE)
-
-#include "ContentType.h"
-#include "Event.h"
-#include "TimeRanges.h"
-#include <wtf/Uint8Array.h>
-
-namespace WebCore {
-
-PassRefPtr<MediaSource> MediaSource::create(ScriptExecutionContext* context)
-{
-    return adoptRef(new MediaSource(context));
-}
-
-MediaSource::MediaSource(ScriptExecutionContext* context)
-    : ContextDestructionObserver(context)
-    , m_readyState(closedKeyword())
-    , m_player(0)
-    , m_nextSourceBufferId(0)
-{
-    m_sourceBuffers = SourceBufferList::create(scriptExecutionContext());
-    m_activeSourceBuffers = SourceBufferList::create(scriptExecutionContext());
-}
-
-SourceBufferList* MediaSource::sourceBuffers()
-{
-    return m_sourceBuffers.get();
-}
-
-SourceBufferList* MediaSource::activeSourceBuffers()
-{
-    // FIXME(91649): support track selection
-    return m_activeSourceBuffers.get();
-}
-
-SourceBuffer* MediaSource::addSourceBuffer(const String& type, ExceptionCode& ec)
-{
-    // 3.1 http://dvcs.w3.org/hg/html-media/raw-file/tip/media-source/media-source.html#dom-addsourcebuffer
-    // 1. If type is null or an empty then throw an INVALID_ACCESS_ERR exception and
-    // abort these steps.
-    if (type.isNull() || type.isEmpty()) {
-        ec = INVALID_ACCESS_ERR;
-        return 0;
-    }
-
-    // 2. If type contains a MIME type that is not supported ..., then throw a
-    // NOT_SUPPORTED_ERR exception and abort these steps.
-    ContentType contentType(type);
-    Vector<String> codecs = contentType.codecs();
-
-    if (!codecs.size()) {
-        ec = NOT_SUPPORTED_ERR;
-        return 0;
-    }
-    
-    // 4. If the readyState attribute is not in the "open" state then throw an
-    // INVALID_STATE_ERR exception and abort these steps.
-    if (!m_player || m_readyState != openKeyword()) {
-        ec = INVALID_STATE_ERR;
-        return 0;
-    }
-
-    // 5. Create a new SourceBuffer object and associated resources.
-    RefPtr<SourceBuffer> buffer = SourceBuffer::create(String::number(++m_nextSourceBufferId), this);
-
-    switch (m_player->sourceAddId(buffer->id(), contentType.type(), codecs)) {
-    case MediaPlayer::Ok:
-        // 6. Add the new object to sourceBuffers and fire a addsourcebuffer on that object.
-        m_sourceBuffers->add(buffer);
-        m_activeSourceBuffers->add(buffer);
-        // 7. Return the new object to the caller.
-        return buffer.get();
-    case MediaPlayer::NotSupported:
-        // 2 (cont). If type contains a MIME type ... that is not supported with the types 
-        // specified for the other SourceBuffer objects in sourceBuffers, then throw
-        // a NOT_SUPPORTED_ERR exception and abort these steps.
-        ec = NOT_SUPPORTED_ERR;
-        return 0;
-    case MediaPlayer::ReachedIdLimit:
-        // 3 (cont). If the user agent can't handle any more SourceBuffer objects then throw 
-        // a QUOTA_EXCEEDED_ERR exception and abort these steps.
-        ec = QUOTA_EXCEEDED_ERR;
-        return 0;
-    }
-
-    ASSERT_NOT_REACHED();
-    return 0;
-}
-
-void MediaSource::removeSourceBuffer(SourceBuffer* buffer, ExceptionCode& ec)
-{
-    // 3.1 http://dvcs.w3.org/hg/html-media/raw-file/tip/media-source/media-source.html#dom-removesourcebuffer
-    // 1. If sourceBuffer is null then throw an INVALID_ACCESS_ERR exception and
-    // abort these steps.
-    if (!buffer) {
-        ec = INVALID_ACCESS_ERR;
-        return;
-    }
-
-    // 2. If sourceBuffers is empty then throw an INVALID_STATE_ERR exception and
-    // abort these steps.
-    if (!m_player || !m_sourceBuffers->length()) {
-        ec = INVALID_STATE_ERR;
-        return;
-    }
-
-    // 3. If sourceBuffer specifies an object that is not in sourceBuffers then
-    // throw a NOT_FOUND_ERR exception and abort these steps.
-    // 6. Remove sourceBuffer from sourceBuffers and fire a removesourcebuffer event
-    // on that object.
-    if (!m_sourceBuffers->remove(buffer)) {
-        ec = NOT_FOUND_ERR;
-        return;
-    }
-
-    // 7. Destroy all resources for sourceBuffer.
-    m_activeSourceBuffers->remove(buffer);
-    m_player->sourceRemoveId(buffer->id());
-
-    // 4. Remove track information from audioTracks, videoTracks, and textTracks for all tracks 
-    // associated with sourceBuffer and fire a simple event named change on the modified lists.
-    // FIXME(91649): support track selection
-
-    // 5. If sourceBuffer is in activeSourceBuffers, then remove it from that list and fire a
-    // removesourcebuffer event on that object.
-    // FIXME(91649): support track selection
-}
-
-const String& MediaSource::readyState() const
-{
-    return m_readyState;
-}
-
-void MediaSource::setReadyState(const String& state)
-{
-    ASSERT(state == openKeyword() || state == closedKeyword() || state == endedKeyword());
-    if (m_readyState == state)
-        return;
-
-    String oldState = m_readyState;
-    m_readyState = state;
-
-    if (m_readyState == closedKeyword()) {
-        m_sourceBuffers->clear();
-        m_activeSourceBuffers->clear();
-        m_player = 0;
-        dispatchEvent(Event::create(eventNames().webkitsourcecloseEvent, false, false));
-        return;
-    }
-    
-    if (oldState == openKeyword() && m_readyState == endedKeyword()) {
-        dispatchEvent(Event::create(eventNames().webkitsourceendedEvent, false, false));
-        return;
-    }
-
-    if (m_readyState == openKeyword()) {
-        dispatchEvent(Event::create(eventNames().webkitsourceopenEvent, false, false));
-        return;
-    }
-}
-
-void MediaSource::endOfStream(const String& error, ExceptionCode& ec)
-{
-    // 3.1 http://dvcs.w3.org/hg/html-media/raw-file/tip/media-source/media-source.html#dom-endofstream
-    // 1. If the readyState attribute is not in the "open" state then throw an
-    // INVALID_STATE_ERR exception and abort these steps.
-    if (!m_player || m_readyState != openKeyword()) {
-        ec = INVALID_STATE_ERR;
-        return;
-    }
-
-    MediaPlayer::EndOfStreamStatus eosStatus = MediaPlayer::EosNoError;
-
-    if (error.isNull() || error.isEmpty())
-        eosStatus = MediaPlayer::EosNoError;
-    else if (error == "network")
-        eosStatus = MediaPlayer::EosNetworkError;
-    else if (error == "decode")
-        eosStatus = MediaPlayer::EosDecodeError;
-    else {
-        ec = INVALID_ACCESS_ERR;
-        return;
-    }
-
-    // 2. Change the readyState attribute value to "ended".
-    setReadyState(endedKeyword());
-    m_player->sourceEndOfStream(eosStatus);
-}
-
-PassRefPtr<TimeRanges> MediaSource::buffered(const String& id, ExceptionCode& ec) const
-{
-    if (!m_player || m_readyState == closedKeyword()) {
-        ec = INVALID_STATE_ERR;
-        return 0;
-    }
-
-    return m_player->sourceBuffered(id);
-}
-
-void MediaSource::append(const String& id, PassRefPtr<Uint8Array> data, ExceptionCode& ec)
-{
-    if (!data.get()) {
-        ec = INVALID_ACCESS_ERR;
-        return;
-    }
-
-    if (!m_player || m_readyState != openKeyword()) {
-        ec = INVALID_STATE_ERR;
-        return;
-    }
-
-    if (!data->length())
-        return;
-
-    if (!m_player->sourceAppend(id, data->data(), data->length())) {
-        ec = SYNTAX_ERR;
-        return;
-    }
-}
-
-void MediaSource::abort(const String& id, ExceptionCode& ec)
-{
-    if (!m_player || m_readyState != openKeyword()) {
-        ec = INVALID_STATE_ERR;
-        return;
-    }
-
-    if (!m_player->sourceAbort(id))
-        ASSERT_NOT_REACHED();
-}
-
-const AtomicString& MediaSource::interfaceName() const
-{
-    return eventNames().interfaceForMediaSource;
-}
-
-ScriptExecutionContext* MediaSource::scriptExecutionContext() const
-{
-    return ContextDestructionObserver::scriptExecutionContext();
-}
-
-EventTargetData* MediaSource::eventTargetData()
-{
-    return &m_eventTargetData;
-}
-
-EventTargetData* MediaSource::ensureEventTargetData()
-{
-    return &m_eventTargetData;
-}
-
-} // namespace WebCore
-
-#endif