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* We now limit the maximum latency in MediaPlayer and the audio mixer, as a

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latency can easily get annoying if too high.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36200 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler
2010-04-12 20:53:15 +00:00
parent 8dd3060da4
commit d0085d25d1
2 changed files with 25 additions and 6 deletions
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src/add-ons/media/media-add-ons/mixer/AudioMixer.cpp
+10 -1
View File
@@ -1,7 +1,7 @@
/* /*
* Copyright 2002 David Shipman, * Copyright 2002 David Shipman,
* Copyright 2003-2007 Marcus Overhagen * Copyright 2003-2007 Marcus Overhagen
* Copyright 2007-2009 Haiku Inc. All rights reserved. * Copyright 2007-2010 Haiku Inc. All rights reserved.
* *
* Distributed under the terms of the MIT License. * Distributed under the terms of the MIT License.
*/ */
@@ -87,6 +87,10 @@ multi_audio_format_specialize(media_multi_audio_format *format,
#define FORMAT_USER_DATA_MAGIC_2 0x4af62b7d #define FORMAT_USER_DATA_MAGIC_2 0x4af62b7d
const static bigtime_t kMaxLatency = 150000;
// 150 ms is the maximum latency we publish
AudioMixer::AudioMixer(BMediaAddOn *addOn, bool isSystemMixer) AudioMixer::AudioMixer(BMediaAddOn *addOn, bool isSystemMixer)
: :
BMediaNode("Audio Mixer"), BMediaNode("Audio Mixer"),
@@ -999,6 +1003,11 @@ AudioMixer::LateNoticeReceived(const media_source& what, bigtime_t howMuch,
return; return;
fInternalLatency += howMuch; fInternalLatency += howMuch;
// At some point a too large latency can get annoying
if (fInternalLatency > kMaxLatency)
fInternalLatency = kMaxLatency;
fLastLateNotification = TimeSource()->Now(); fLastLateNotification = TimeSource()->Now();
debug_printf("AudioMixer: increasing internal latency to %Ld usec\n", fInternalLatency); debug_printf("AudioMixer: increasing internal latency to %Ld usec\n", fInternalLatency);
src/apps/mediaplayer/media_node_framework/audio/AudioProducer.cpp
+12 -2
View File
@@ -2,8 +2,9 @@
* Copyright (c) 1998-99, Be Incorporated, All Rights Reserved. * Copyright (c) 1998-99, Be Incorporated, All Rights Reserved.
* Distributed under the terms of the Be Sample Code license. * Distributed under the terms of the Be Sample Code license.
* *
* Copyright (c) 2000-2008, Ingo Weinhold <ingo_weinhold@gmx.de>, * Copyright 2010, Axel Dörfler, axeld@pinc-software.de.
* Copyright (c) 2000-2008, Stephan Aßmus <superstippi@gmx.de>, * Copyright 2000-2008, Ingo Weinhold <ingo_weinhold@gmx.de>,
* Copyright 2000-2008, Stephan Aßmus <[email protected]>,
* All Rights Reserved. Distributed under the terms of the MIT license. * All Rights Reserved. Distributed under the terms of the MIT license.
*/ */
@@ -47,6 +48,10 @@
#endif #endif
const static bigtime_t kMaxLatency = 150000;
// 150 ms is the maximum latency we publish
#if DEBUG_TO_FILE #if DEBUG_TO_FILE
static BMediaFile* static BMediaFile*
init_media_file(media_format format, BMediaTrack** _track) init_media_file(media_format format, BMediaTrack** _track)
@@ -507,6 +512,11 @@ AudioProducer::LateNoticeReceived(const media_source& what, bigtime_t howMuch,
// ... // ...
} else if (RunMode() == B_INCREASE_LATENCY) { } else if (RunMode() == B_INCREASE_LATENCY) {
fInternalLatency += howMuch; fInternalLatency += howMuch;
// At some point a too large latency can get annoying
if (fInternalLatency > kMaxLatency)
fInternalLatency = kMaxLatency;
SetEventLatency(fLatency + fInternalLatency); SetEventLatency(fLatency + fInternalLatency);
} else { } else {
size_t sampleSize size_t sampleSize