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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef MEDIA_BASE_SAMPLE_FORMAT_H | 5 #ifndef MEDIA_BASE_SAMPLE_FORMAT_H |
6 #define MEDIA_BASE_SAMPLE_FORMAT_H | 6 #define MEDIA_BASE_SAMPLE_FORMAT_H |
7 | 7 |
8 #include "media/base/media_export.h" | 8 #include "media/base/media_export.h" |
9 | 9 |
10 namespace media { | 10 namespace media { |
11 | 11 |
12 enum SampleFormat { | 12 enum SampleFormat { |
13 // These values are histogrammed over time; do not change their ordinal | 13 // These values are histogrammed over time; do not change their ordinal |
14 // values. When deleting a sample format replace it with a dummy value; when | 14 // values. When deleting a sample format replace it with a dummy value; when |
15 // adding a sample format, do so at the bottom before kSampleFormatMax. | 15 // adding a sample format, do so at the bottom before kSampleFormatMax, and |
| 16 // upadate the value of kSampleFormatMax. |
16 kUnknownSampleFormat = 0, | 17 kUnknownSampleFormat = 0, |
17 kSampleFormatU8, // Unsigned 8-bit w/ bias of 128. | 18 kSampleFormatU8, // Unsigned 8-bit w/ bias of 128. |
18 kSampleFormatS16, // Signed 16-bit. | 19 kSampleFormatS16, // Signed 16-bit. |
19 kSampleFormatS32, // Signed 32-bit. | 20 kSampleFormatS32, // Signed 32-bit. |
20 kSampleFormatF32, // Float 32-bit. | 21 kSampleFormatF32, // Float 32-bit. |
21 kSampleFormatPlanarS16, // Signed 16-bit planar. | 22 kSampleFormatPlanarS16, // Signed 16-bit planar. |
22 kSampleFormatPlanarF32, // Float 32-bit planar. | 23 kSampleFormatPlanarF32, // Float 32-bit planar. |
23 | 24 |
24 // Must always be last! | 25 // Must always be equal to last entry! |
25 kSampleFormatMax | 26 kSampleFormatMax = kSampleFormatPlanarF32, |
26 }; | 27 }; |
27 | 28 |
28 // Returns the number of bytes used per channel for the specified | 29 // Returns the number of bytes used per channel for the specified |
29 // |sample_format|. | 30 // |sample_format|. |
30 MEDIA_EXPORT int SampleFormatToBytesPerChannel(SampleFormat sample_format); | 31 MEDIA_EXPORT int SampleFormatToBytesPerChannel(SampleFormat sample_format); |
31 | 32 |
32 // Returns the name of the sample format as a string | 33 // Returns the name of the sample format as a string |
33 MEDIA_EXPORT const char* SampleFormatToString(SampleFormat sample_format); | 34 MEDIA_EXPORT const char* SampleFormatToString(SampleFormat sample_format); |
34 | 35 |
35 } // namespace media | 36 } // namespace media |
36 | 37 |
37 #endif // MEDIA_BASE_SAMPLE_FORMAT_H | 38 #endif // MEDIA_BASE_SAMPLE_FORMAT_H |
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