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1 /* | 1 /* |
2 * Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights
reserved. | 2 * Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights
reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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1896 startDeferredLoad(); | 1896 startDeferredLoad(); |
1897 } | 1897 } |
1898 | 1898 |
1899 void HTMLMediaElement::seek(double time, ExceptionState& exceptionState) | 1899 void HTMLMediaElement::seek(double time, ExceptionState& exceptionState) |
1900 { | 1900 { |
1901 WTF_LOG(Media, "HTMLMediaElement::seek(%f)", time); | 1901 WTF_LOG(Media, "HTMLMediaElement::seek(%f)", time); |
1902 | 1902 |
1903 // 4.8.10.9 Seeking | 1903 // 4.8.10.9 Seeking |
1904 | 1904 |
1905 // 1 - If the media element's readyState is HAVE_NOTHING, then raise an Inva
lidStateError exception. | 1905 // 1 - If the media element's readyState is HAVE_NOTHING, then raise an Inva
lidStateError exception. |
1906 if (m_readyState == HAVE_NOTHING || !m_player) { | 1906 if (m_readyState == HAVE_NOTHING) { |
1907 exceptionState.throwDOMException(InvalidStateError, "The element's ready
State is HAVE_NOTHING."); | 1907 exceptionState.throwDOMException(InvalidStateError, "The element's ready
State is HAVE_NOTHING."); |
1908 return; | 1908 return; |
1909 } | 1909 } |
1910 | 1910 |
1911 // If the media engine has been told to postpone loading data, let it go ahe
ad now. | 1911 // If the media engine has been told to postpone loading data, let it go ahe
ad now. |
1912 if (m_preload < MediaPlayer::Auto && m_readyState < HAVE_FUTURE_DATA) | 1912 if (m_preload < MediaPlayer::Auto && m_readyState < HAVE_FUTURE_DATA) |
1913 prepareToPlay(); | 1913 prepareToPlay(); |
1914 | 1914 |
1915 // Get the current time before setting m_seeking, m_lastSeekTime is returned
once it is set. | 1915 // Get the current time before setting m_seeking, m_lastSeekTime is returned
once it is set. |
1916 refreshCachedTime(); | 1916 refreshCachedTime(); |
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1974 if (m_lastSeekTime < now) | 1974 if (m_lastSeekTime < now) |
1975 addPlayedRange(m_lastSeekTime, now); | 1975 addPlayedRange(m_lastSeekTime, now); |
1976 } | 1976 } |
1977 m_lastSeekTime = time; | 1977 m_lastSeekTime = time; |
1978 m_sentEndEvent = false; | 1978 m_sentEndEvent = false; |
1979 | 1979 |
1980 // 8 - Queue a task to fire a simple event named seeking at the element. | 1980 // 8 - Queue a task to fire a simple event named seeking at the element. |
1981 scheduleEvent(EventTypeNames::seeking); | 1981 scheduleEvent(EventTypeNames::seeking); |
1982 | 1982 |
1983 // 9 - Set the current playback position to the given new playback position | 1983 // 9 - Set the current playback position to the given new playback position |
1984 m_player->seek(time); | 1984 webMediaPlayer()->seek(time); |
1985 | 1985 |
1986 // 10-14 are handled, if necessary, when the engine signals a readystate cha
nge or otherwise | 1986 // 10-14 are handled, if necessary, when the engine signals a readystate cha
nge or otherwise |
1987 // satisfies seek completion and signals a time change. | 1987 // satisfies seek completion and signals a time change. |
1988 } | 1988 } |
1989 | 1989 |
1990 void HTMLMediaElement::finishSeek() | 1990 void HTMLMediaElement::finishSeek() |
1991 { | 1991 { |
1992 WTF_LOG(Media, "HTMLMediaElement::finishSeek"); | 1992 WTF_LOG(Media, "HTMLMediaElement::finishSeek"); |
1993 | 1993 |
1994 // 4.8.10.9 Seeking completion | 1994 // 4.8.10.9 Seeking completion |
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2014 return webMediaPlayer() && webMediaPlayer()->hasAudio(); | 2014 return webMediaPlayer() && webMediaPlayer()->hasAudio(); |
2015 } | 2015 } |
2016 | 2016 |
2017 bool HTMLMediaElement::seeking() const | 2017 bool HTMLMediaElement::seeking() const |
2018 { | 2018 { |
2019 return m_seeking; | 2019 return m_seeking; |
2020 } | 2020 } |
2021 | 2021 |
2022 void HTMLMediaElement::refreshCachedTime() const | 2022 void HTMLMediaElement::refreshCachedTime() const |
2023 { | 2023 { |
2024 m_cachedTime = m_player->currentTime(); | 2024 if (!webMediaPlayer()) |
| 2025 return; |
| 2026 |
| 2027 m_cachedTime = webMediaPlayer()->currentTime(); |
2025 m_cachedTimeWallClockUpdateTime = WTF::currentTime(); | 2028 m_cachedTimeWallClockUpdateTime = WTF::currentTime(); |
2026 } | 2029 } |
2027 | 2030 |
2028 void HTMLMediaElement::invalidateCachedTime() | 2031 void HTMLMediaElement::invalidateCachedTime() |
2029 { | 2032 { |
2030 WTF_LOG(Media, "HTMLMediaElement::invalidateCachedTime"); | 2033 WTF_LOG(Media, "HTMLMediaElement::invalidateCachedTime"); |
2031 | 2034 |
2032 // Don't try to cache movie time when playback first starts as the time repo
rted by the engine | 2035 // Don't try to cache movie time when playback first starts as the time repo
rted by the engine |
2033 // sometimes fluctuates for a short amount of time, so the cached time will
be off if we take it | 2036 // sometimes fluctuates for a short amount of time, so the cached time will
be off if we take it |
2034 // too early. | 2037 // too early. |
2035 static const double minimumTimePlayingBeforeCacheSnapshot = 0.5; | 2038 static const double minimumTimePlayingBeforeCacheSnapshot = 0.5; |
2036 | 2039 |
2037 m_minimumWallClockTimeToCacheMediaTime = WTF::currentTime() + minimumTimePla
yingBeforeCacheSnapshot; | 2040 m_minimumWallClockTimeToCacheMediaTime = WTF::currentTime() + minimumTimePla
yingBeforeCacheSnapshot; |
2038 m_cachedTime = MediaPlayer::invalidTime(); | 2041 m_cachedTime = MediaPlayer::invalidTime(); |
2039 } | 2042 } |
2040 | 2043 |
2041 // playback state | 2044 // playback state |
2042 double HTMLMediaElement::currentTime() const | 2045 double HTMLMediaElement::currentTime() const |
2043 { | 2046 { |
2044 #if LOG_CACHED_TIME_WARNINGS | 2047 #if LOG_CACHED_TIME_WARNINGS |
2045 static const double minCachedDeltaForWarning = 0.01; | 2048 static const double minCachedDeltaForWarning = 0.01; |
2046 #endif | 2049 #endif |
2047 | 2050 |
2048 if (!m_player) | 2051 if (m_readyState == HAVE_NOTHING) |
2049 return 0; | 2052 return 0; |
2050 | 2053 |
2051 if (m_seeking) { | 2054 if (m_seeking) { |
2052 WTF_LOG(Media, "HTMLMediaElement::currentTime - seeking, returning %f",
m_lastSeekTime); | 2055 WTF_LOG(Media, "HTMLMediaElement::currentTime - seeking, returning %f",
m_lastSeekTime); |
2053 return m_lastSeekTime; | 2056 return m_lastSeekTime; |
2054 } | 2057 } |
2055 | 2058 |
2056 if (m_cachedTime != MediaPlayer::invalidTime() && m_paused) { | 2059 if (m_cachedTime != MediaPlayer::invalidTime() && m_paused) { |
2057 #if LOG_CACHED_TIME_WARNINGS | 2060 #if LOG_CACHED_TIME_WARNINGS |
2058 double delta = m_cachedTime - m_player->currentTime(); | 2061 double delta = m_cachedTime - webMediaPlayer()->currentTime(); |
2059 if (delta > minCachedDeltaForWarning) | 2062 if (delta > minCachedDeltaForWarning) |
2060 WTF_LOG(Media, "HTMLMediaElement::currentTime - WARNING, cached time
is %f seconds off of media time when paused", delta); | 2063 WTF_LOG(Media, "HTMLMediaElement::currentTime - WARNING, cached time
is %f seconds off of media time when paused", delta); |
2061 #endif | 2064 #endif |
2062 return m_cachedTime; | 2065 return m_cachedTime; |
2063 } | 2066 } |
2064 | 2067 |
2065 refreshCachedTime(); | 2068 refreshCachedTime(); |
2066 | 2069 |
2067 return m_cachedTime; | 2070 return m_cachedTime; |
2068 } | 2071 } |
2069 | 2072 |
2070 void HTMLMediaElement::setCurrentTime(double time, ExceptionState& exceptionStat
e) | 2073 void HTMLMediaElement::setCurrentTime(double time, ExceptionState& exceptionStat
e) |
2071 { | 2074 { |
2072 if (m_mediaController) { | 2075 if (m_mediaController) { |
2073 exceptionState.throwDOMException(InvalidStateError, "The element is slav
ed to a MediaController."); | 2076 exceptionState.throwDOMException(InvalidStateError, "The element is slav
ed to a MediaController."); |
2074 return; | 2077 return; |
2075 } | 2078 } |
2076 seek(time, exceptionState); | 2079 seek(time, exceptionState); |
2077 } | 2080 } |
2078 | 2081 |
2079 double HTMLMediaElement::duration() const | 2082 double HTMLMediaElement::duration() const |
2080 { | 2083 { |
2081 if (!m_player || m_readyState < HAVE_METADATA) | 2084 if (m_readyState < HAVE_METADATA) |
2082 return std::numeric_limits<double>::quiet_NaN(); | 2085 return std::numeric_limits<double>::quiet_NaN(); |
2083 | 2086 |
2084 // FIXME: Refactor so m_duration is kept current (in both MSE and | 2087 // FIXME: Refactor so m_duration is kept current (in both MSE and |
2085 // non-MSE cases) once we have transitioned from HAVE_NOTHING -> | 2088 // non-MSE cases) once we have transitioned from HAVE_NOTHING -> |
2086 // HAVE_METADATA. Currently, m_duration may be out of date for at least MSE | 2089 // HAVE_METADATA. Currently, m_duration may be out of date for at least MSE |
2087 // case because MediaSource and SourceBuffer do not notify the element | 2090 // case because MediaSource and SourceBuffer do not notify the element |
2088 // directly upon duration changes caused by endOfStream, remove, or append | 2091 // directly upon duration changes caused by endOfStream, remove, or append |
2089 // operations; rather the notification is triggered by the WebMediaPlayer | 2092 // operations; rather the notification is triggered by the WebMediaPlayer |
2090 // implementation observing that the underlying engine has updated duration | 2093 // implementation observing that the underlying engine has updated duration |
2091 // and notifying the element to consult its MediaSource for current | 2094 // and notifying the element to consult its MediaSource for current |
2092 // duration. See http://crbug.com/266644 | 2095 // duration. See http://crbug.com/266644 |
2093 | 2096 |
2094 if (m_mediaSource) | 2097 if (m_mediaSource) |
2095 return m_mediaSource->duration(); | 2098 return m_mediaSource->duration(); |
2096 | 2099 |
2097 return m_player->duration(); | 2100 return webMediaPlayer()->duration(); |
2098 } | 2101 } |
2099 | 2102 |
2100 bool HTMLMediaElement::paused() const | 2103 bool HTMLMediaElement::paused() const |
2101 { | 2104 { |
2102 return m_paused; | 2105 return m_paused; |
2103 } | 2106 } |
2104 | 2107 |
2105 double HTMLMediaElement::defaultPlaybackRate() const | 2108 double HTMLMediaElement::defaultPlaybackRate() const |
2106 { | 2109 { |
2107 return m_defaultPlaybackRate; | 2110 return m_defaultPlaybackRate; |
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3021 | 3024 |
3022 void HTMLMediaElement::mediaPlayerTimeChanged() | 3025 void HTMLMediaElement::mediaPlayerTimeChanged() |
3023 { | 3026 { |
3024 WTF_LOG(Media, "HTMLMediaElement::mediaPlayerTimeChanged"); | 3027 WTF_LOG(Media, "HTMLMediaElement::mediaPlayerTimeChanged"); |
3025 | 3028 |
3026 updateActiveTextTrackCues(currentTime()); | 3029 updateActiveTextTrackCues(currentTime()); |
3027 | 3030 |
3028 invalidateCachedTime(); | 3031 invalidateCachedTime(); |
3029 | 3032 |
3030 // 4.8.10.9 steps 12-14. Needed if no ReadyState change is associated with t
he seek. | 3033 // 4.8.10.9 steps 12-14. Needed if no ReadyState change is associated with t
he seek. |
3031 if (m_seeking && m_readyState >= HAVE_CURRENT_DATA && !m_player->seeking()) | 3034 if (m_seeking && m_readyState >= HAVE_CURRENT_DATA && !webMediaPlayer()->see
king()) |
3032 finishSeek(); | 3035 finishSeek(); |
3033 | 3036 |
3034 // Always call scheduleTimeupdateEvent when the media engine reports a time
discontinuity, | 3037 // Always call scheduleTimeupdateEvent when the media engine reports a time
discontinuity, |
3035 // it will only queue a 'timeupdate' event if we haven't already posted one
at the current | 3038 // it will only queue a 'timeupdate' event if we haven't already posted one
at the current |
3036 // movie time. | 3039 // movie time. |
3037 scheduleTimeupdateEvent(false); | 3040 scheduleTimeupdateEvent(false); |
3038 | 3041 |
3039 double now = currentTime(); | 3042 double now = currentTime(); |
3040 double dur = duration(); | 3043 double dur = duration(); |
3041 | 3044 |
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3971 | 3974 |
3972 #if ENABLE(WEB_AUDIO) | 3975 #if ENABLE(WEB_AUDIO) |
3973 void HTMLMediaElement::clearWeakMembers(Visitor* visitor) | 3976 void HTMLMediaElement::clearWeakMembers(Visitor* visitor) |
3974 { | 3977 { |
3975 if (!visitor->isAlive(m_audioSourceNode) && audioSourceProvider()) | 3978 if (!visitor->isAlive(m_audioSourceNode) && audioSourceProvider()) |
3976 audioSourceProvider()->setClient(0); | 3979 audioSourceProvider()->setClient(0); |
3977 } | 3980 } |
3978 #endif | 3981 #endif |
3979 | 3982 |
3980 } | 3983 } |
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