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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 #include "media/mp3/mp3_stream_parser.h" | 5 #include "media/mp3/mp3_stream_parser.h" |
6 | 6 |
7 #include "base/bind.h" | 7 #include "base/bind.h" |
8 #include "base/callback_helpers.h" | 8 #include "base/callback_helpers.h" |
9 #include "base/message_loop/message_loop.h" | 9 #include "base/message_loop/message_loop.h" |
10 #include "media/base/bit_reader.h" | 10 #include "media/base/bit_reader.h" |
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89 // Derived from: http://mpgedit.org/mpgedit/mpeg_format/MP3Format.html | 89 // Derived from: http://mpgedit.org/mpgedit/mpeg_format/MP3Format.html |
90 static const int kSampleRateMap[4][4] = { | 90 static const int kSampleRateMap[4][4] = { |
91 // { V2.5, reserved, V2, V1 } | 91 // { V2.5, reserved, V2, V1 } |
92 { 11025, 0, 22050, 44100 }, | 92 { 11025, 0, 22050, 44100 }, |
93 { 12000, 0, 24000, 48000 }, | 93 { 12000, 0, 24000, 48000 }, |
94 { 8000, 0, 16000, 32000 }, | 94 { 8000, 0, 16000, 32000 }, |
95 { 0, 0, 0, 0 } | 95 { 0, 0, 0, 0 } |
96 }; | 96 }; |
97 | 97 |
98 // Frame header field constants. | 98 // Frame header field constants. |
99 static const int kVersion1 = 3; | |
100 static const int kVersion2 = 2; | 99 static const int kVersion2 = 2; |
101 static const int kVersionReserved = 1; | 100 static const int kVersionReserved = 1; |
102 static const int kVersion2_5 = 0; | 101 static const int kVersion2_5 = 0; |
103 static const int kLayerReserved = 0; | 102 static const int kLayerReserved = 0; |
104 static const int kLayer1 = 3; | 103 static const int kLayer1 = 3; |
105 static const int kLayer2 = 2; | 104 static const int kLayer2 = 2; |
106 static const int kLayer3 = 1; | 105 static const int kLayer3 = 1; |
107 static const int kBitrateFree = 0; | 106 static const int kBitrateFree = 0; |
108 static const int kBitrateBad = 0xf; | 107 static const int kBitrateBad = 0xf; |
109 static const int kSampleRateReserved = 3; | 108 static const int kSampleRateReserved = 3; |
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589 | 588 |
590 if (end_of_segment) { | 589 if (end_of_segment) { |
591 in_media_segment_ = false; | 590 in_media_segment_ = false; |
592 end_of_segment_cb_.Run(); | 591 end_of_segment_cb_.Run(); |
593 } | 592 } |
594 | 593 |
595 return true; | 594 return true; |
596 } | 595 } |
597 | 596 |
598 } // namespace media | 597 } // namespace media |
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