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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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/base/audio_decoder_config.h" | 5 #include "media/base/audio_decoder_config.h" |
6 | 6 |
7 #include "base/logging.h" | 7 #include "base/logging.h" |
8 #include "media/base/limits.h" | 8 #include "media/base/limits.h" |
9 | 9 |
10 namespace media { | 10 namespace media { |
11 | 11 |
12 AudioDecoderConfig::AudioDecoderConfig() | 12 AudioDecoderConfig::AudioDecoderConfig() |
13 : codec_(kUnknownAudioCodec), | 13 : codec_(kUnknownAudioCodec), |
14 sample_format_(kUnknownSampleFormat), | 14 sample_format_(kUnknownSampleFormat), |
15 bytes_per_channel_(0), | 15 bytes_per_channel_(0), |
16 channel_layout_(CHANNEL_LAYOUT_UNSUPPORTED), | 16 channel_layout_(CHANNEL_LAYOUT_UNSUPPORTED), |
17 samples_per_second_(0), | 17 samples_per_second_(0), |
18 bytes_per_frame_(0), | 18 bytes_per_frame_(0), |
19 is_encrypted_(false), | 19 encryption_scheme_(false), |
20 codec_delay_(0) { | 20 codec_delay_(0) {} |
21 } | |
22 | 21 |
23 AudioDecoderConfig::AudioDecoderConfig(AudioCodec codec, | 22 AudioDecoderConfig::AudioDecoderConfig( |
24 SampleFormat sample_format, | 23 AudioCodec codec, |
25 ChannelLayout channel_layout, | 24 SampleFormat sample_format, |
26 int samples_per_second, | 25 ChannelLayout channel_layout, |
27 const std::vector<uint8_t>& extra_data, | 26 int samples_per_second, |
28 bool is_encrypted) { | 27 const std::vector<uint8_t>& extra_data, |
| 28 const EncryptionScheme& encryption_scheme) { |
29 Initialize(codec, sample_format, channel_layout, samples_per_second, | 29 Initialize(codec, sample_format, channel_layout, samples_per_second, |
30 extra_data, is_encrypted, base::TimeDelta(), 0); | 30 extra_data, encryption_scheme, base::TimeDelta(), 0); |
31 } | 31 } |
32 | 32 |
33 void AudioDecoderConfig::Initialize(AudioCodec codec, | 33 void AudioDecoderConfig::Initialize(AudioCodec codec, |
34 SampleFormat sample_format, | 34 SampleFormat sample_format, |
35 ChannelLayout channel_layout, | 35 ChannelLayout channel_layout, |
36 int samples_per_second, | 36 int samples_per_second, |
37 const std::vector<uint8_t>& extra_data, | 37 const std::vector<uint8_t>& extra_data, |
38 bool is_encrypted, | 38 const EncryptionScheme& encryption_scheme, |
39 base::TimeDelta seek_preroll, | 39 base::TimeDelta seek_preroll, |
40 int codec_delay) { | 40 int codec_delay) { |
41 codec_ = codec; | 41 codec_ = codec; |
42 channel_layout_ = channel_layout; | 42 channel_layout_ = channel_layout; |
43 samples_per_second_ = samples_per_second; | 43 samples_per_second_ = samples_per_second; |
44 sample_format_ = sample_format; | 44 sample_format_ = sample_format; |
45 bytes_per_channel_ = SampleFormatToBytesPerChannel(sample_format); | 45 bytes_per_channel_ = SampleFormatToBytesPerChannel(sample_format); |
46 extra_data_ = extra_data; | 46 extra_data_ = extra_data; |
47 is_encrypted_ = is_encrypted; | 47 encryption_scheme_ = encryption_scheme; |
48 seek_preroll_ = seek_preroll; | 48 seek_preroll_ = seek_preroll; |
49 codec_delay_ = codec_delay; | 49 codec_delay_ = codec_delay; |
50 | 50 |
51 int channels = ChannelLayoutToChannelCount(channel_layout_); | 51 int channels = ChannelLayoutToChannelCount(channel_layout_); |
52 bytes_per_frame_ = channels * bytes_per_channel_; | 52 bytes_per_frame_ = channels * bytes_per_channel_; |
53 } | 53 } |
54 | 54 |
55 AudioDecoderConfig::~AudioDecoderConfig() {} | 55 AudioDecoderConfig::~AudioDecoderConfig() {} |
56 | 56 |
57 bool AudioDecoderConfig::IsValidConfig() const { | 57 bool AudioDecoderConfig::IsValidConfig() const { |
58 return codec_ != kUnknownAudioCodec && | 58 return codec_ != kUnknownAudioCodec && |
59 channel_layout_ != CHANNEL_LAYOUT_UNSUPPORTED && | 59 channel_layout_ != CHANNEL_LAYOUT_UNSUPPORTED && |
60 bytes_per_channel_ > 0 && | 60 bytes_per_channel_ > 0 && |
61 bytes_per_channel_ <= limits::kMaxBytesPerSample && | 61 bytes_per_channel_ <= limits::kMaxBytesPerSample && |
62 samples_per_second_ > 0 && | 62 samples_per_second_ > 0 && |
63 samples_per_second_ <= limits::kMaxSampleRate && | 63 samples_per_second_ <= limits::kMaxSampleRate && |
64 sample_format_ != kUnknownSampleFormat && | 64 sample_format_ != kUnknownSampleFormat && |
65 seek_preroll_ >= base::TimeDelta() && | 65 seek_preroll_ >= base::TimeDelta() && |
66 codec_delay_ >= 0; | 66 codec_delay_ >= 0; |
67 } | 67 } |
68 | 68 |
69 bool AudioDecoderConfig::Matches(const AudioDecoderConfig& config) const { | 69 bool AudioDecoderConfig::Matches(const AudioDecoderConfig& config) const { |
70 return ((codec() == config.codec()) && | 70 return ((codec() == config.codec()) && |
71 (bytes_per_channel() == config.bytes_per_channel()) && | 71 (bytes_per_channel() == config.bytes_per_channel()) && |
72 (channel_layout() == config.channel_layout()) && | 72 (channel_layout() == config.channel_layout()) && |
73 (samples_per_second() == config.samples_per_second()) && | 73 (samples_per_second() == config.samples_per_second()) && |
74 (extra_data() == config.extra_data()) && | 74 (extra_data() == config.extra_data()) && |
75 (is_encrypted() == config.is_encrypted()) && | 75 (encryption_scheme().Matches(config.encryption_scheme())) && |
76 (sample_format() == config.sample_format()) && | 76 (sample_format() == config.sample_format()) && |
77 (seek_preroll() == config.seek_preroll()) && | 77 (seek_preroll() == config.seek_preroll()) && |
78 (codec_delay() == config.codec_delay())); | 78 (codec_delay() == config.codec_delay())); |
79 } | 79 } |
80 | 80 |
81 std::string AudioDecoderConfig::AsHumanReadableString() const { | 81 std::string AudioDecoderConfig::AsHumanReadableString() const { |
82 std::ostringstream s; | 82 std::ostringstream s; |
83 s << "codec: " << GetHumanReadableCodecName() | 83 s << "codec: " << GetHumanReadableCodecName() |
84 << " bytes_per_channel: " << bytes_per_channel() | 84 << " bytes_per_channel: " << bytes_per_channel() |
85 << " channel_layout: " << channel_layout() | 85 << " channel_layout: " << channel_layout() |
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123 case kCodecOpus: | 123 case kCodecOpus: |
124 return "opus"; | 124 return "opus"; |
125 case kCodecALAC: | 125 case kCodecALAC: |
126 return "alac"; | 126 return "alac"; |
127 } | 127 } |
128 NOTREACHED(); | 128 NOTREACHED(); |
129 return ""; | 129 return ""; |
130 } | 130 } |
131 | 131 |
132 } // namespace media | 132 } // namespace media |
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