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| author | jrummell@chromium.org <jrummell@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2013-06-12 21:42:10 +0000 |
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| committer | jrummell@chromium.org <jrummell@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2013-06-12 21:42:10 +0000 |
| commit | d1d4595ae1cee37c14b800b3cde15a2798129a39 (patch) | |
| tree | ef639b5099bf86c60eccbe1fff0eb257b506fdd3 /media/base/sample_format.h | |
| parent | cadd30fea95dbec58c69078b959789be93917c37 (diff) | |
| download | chromium_src-d1d4595ae1cee37c14b800b3cde15a2798129a39.zip chromium_src-d1d4595ae1cee37c14b800b3cde15a2798129a39.tar.gz chromium_src-d1d4595ae1cee37c14b800b3cde15a2798129a39.tar.bz2 | |
Expose SampleFormat -> bytes per frame calculations.
First part of converting audio streams to reduce copying the data.
BUG=248989
Review URL: https://chromiumcodereview.appspot.com/16404013
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@205937 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'media/base/sample_format.h')
| -rw-r--r-- | media/base/sample_format.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/media/base/sample_format.h b/media/base/sample_format.h new file mode 100644 index 0000000..bcaa5b2 --- /dev/null +++ b/media/base/sample_format.h @@ -0,0 +1,34 @@ +// Copyright 2013 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef MEDIA_BASE_SAMPLE_FORMAT_H +#define MEDIA_BASE_SAMPLE_FORMAT_H + +#include "media/base/media_export.h" + +namespace media { + +enum SampleFormat { + // These values are histogrammed over time; do not change their ordinal + // values. When deleting a sample format replace it with a dummy value; when + // adding a sample format, do so at the bottom before kSampleFormatMax. + kUnknownSampleFormat = 0, + kSampleFormatU8, // Unsigned 8-bit w/ bias of 128. + kSampleFormatS16, // Signed 16-bit. + kSampleFormatS32, // Signed 32-bit. + kSampleFormatF32, // Float 32-bit. + kSampleFormatPlanarS16, // Signed 16-bit planar. + kSampleFormatPlanarF32, // Float 32-bit planar. + + // Must always be last! + kSampleFormatMax +}; + +// Returns the number of bytes used per channel for the specified +// |sample_format|. +MEDIA_EXPORT int SampleFormatToBytesPerChannel(SampleFormat sample_format); + +} // namespace media + +#endif // MEDIA_BASE_SAMPLE_FORMAT_H |