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| author | sergeyu@chromium.org <sergeyu@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2010-08-31 23:18:48 +0000 |
|---|---|---|
| committer | sergeyu@chromium.org <sergeyu@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2010-08-31 23:18:48 +0000 |
| commit | 2f6d086da79c737bc2a0ee3023ca80c608c75d19 (patch) | |
| tree | 6943204cb1c9c7d7cbe722f91a64a1c326601fef /media/base | |
| parent | 87949cc2b85979964ca9de9483ba1ba2758e0b81 (diff) | |
| download | chromium_src-2f6d086da79c737bc2a0ee3023ca80c608c75d19.zip chromium_src-2f6d086da79c737bc2a0ee3023ca80c608c75d19.tar.gz chromium_src-2f6d086da79c737bc2a0ee3023ca80c608c75d19.tar.bz2 | |
Add AudioParameters struct. Use it everywhere.
BUG=None
TEST=unittests
Review URL: http://codereview.chromium.org/3226012
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@58097 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'media/base')
| -rw-r--r-- | media/base/limits.h | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/media/base/limits.h b/media/base/limits.h index 8694efa..517a5d1 100644 --- a/media/base/limits.h +++ b/media/base/limits.h @@ -16,10 +16,14 @@ struct Limits { static const size_t kMaxDimension = (1 << 15) - 1; // 32767 static const size_t kMaxCanvas = (1 << (14 * 2)); // 16384 x 16384 - // For audio. - static const size_t kMaxSampleRate = 192000; - static const size_t kMaxChannels = 32; - static const size_t kMaxBPS = 64; + // Following limits are used by AudioParameters::IsValid(). + // The 192 Khz constant is the frequency of quicktime lossless audio codec. + // MP4 is limited to 96 Khz, and mp3 is limited to 48 Khz. + // OGG vorbis was initially limited to 96 Khz, but recent tools are unlimited. + // 192 Khz is also the limit on most PC audio hardware. + static const int kMaxSampleRate = 192000; + static const int kMaxChannels = 32; + static const int kMaxBitsPerSample = 64; // Maximum possible time. static const int64 kMaxTimeInMicroseconds = kint64max; |