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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 "content/renderer/media/android/audio_decoder_android.h" | 5 #include "content/renderer/media/android/audio_decoder_android.h" |
6 | 6 |
7 #include <errno.h> | 7 #include <errno.h> |
8 #include <fcntl.h> | 8 #include <fcntl.h> |
9 #include <limits.h> | 9 #include <limits.h> |
10 #include <sys/mman.h> | 10 #include <sys/mman.h> |
11 #include <unistd.h> | 11 #include <unistd.h> |
12 #include <vector> | 12 #include <vector> |
13 | 13 |
14 #include "base/file_descriptor_posix.h" | 14 #include "base/file_descriptor_posix.h" |
15 #include "base/logging.h" | 15 #include "base/logging.h" |
16 #include "base/memory/shared_memory.h" | 16 #include "base/memory/shared_memory.h" |
17 #include "base/posix/eintr_wrapper.h" | 17 #include "base/posix/eintr_wrapper.h" |
| 18 #include "base/process/process_handle.h" |
18 #include "content/common/view_messages.h" | 19 #include "content/common/view_messages.h" |
19 #include "media/base/android/webaudio_media_codec_info.h" | 20 #include "media/base/android/webaudio_media_codec_info.h" |
20 #include "media/base/audio_bus.h" | 21 #include "media/base/audio_bus.h" |
21 #include "media/base/limits.h" | 22 #include "media/base/limits.h" |
22 #include "third_party/WebKit/public/platform/WebAudioBus.h" | 23 #include "third_party/WebKit/public/platform/WebAudioBus.h" |
23 | 24 |
24 namespace content { | 25 namespace content { |
25 | 26 |
26 class AudioDecoderIO { | 27 class AudioDecoderIO { |
27 public: | 28 public: |
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82 << ": " << strerror(errno); | 83 << ": " << strerror(errno); |
83 } | 84 } |
84 } | 85 } |
85 | 86 |
86 bool AudioDecoderIO::IsValid() const { | 87 bool AudioDecoderIO::IsValid() const { |
87 return read_fd_ >= 0 && write_fd_ >= 0 && | 88 return read_fd_ >= 0 && write_fd_ >= 0 && |
88 encoded_shared_memory_.memory(); | 89 encoded_shared_memory_.memory(); |
89 } | 90 } |
90 | 91 |
91 bool AudioDecoderIO::ShareEncodedToProcess(base::SharedMemoryHandle* handle) { | 92 bool AudioDecoderIO::ShareEncodedToProcess(base::SharedMemoryHandle* handle) { |
92 return encoded_shared_memory_.ShareToProcess( | 93 return encoded_shared_memory_.ShareToProcess(base::GetCurrentProcessHandle(), |
93 base::Process::Current().handle(), | 94 handle); |
94 handle); | |
95 } | 95 } |
96 | 96 |
97 static float ConvertSampleToFloat(int16_t sample) { | 97 static float ConvertSampleToFloat(int16_t sample) { |
98 const float kMaxScale = 1.0f / std::numeric_limits<int16_t>::max(); | 98 const float kMaxScale = 1.0f / std::numeric_limits<int16_t>::max(); |
99 const float kMinScale = -1.0f / std::numeric_limits<int16_t>::min(); | 99 const float kMinScale = -1.0f / std::numeric_limits<int16_t>::min(); |
100 | 100 |
101 return sample * (sample < 0 ? kMinScale : kMaxScale); | 101 return sample * (sample < 0 ? kMinScale : kMaxScale); |
102 } | 102 } |
103 | 103 |
104 // A basic WAVE file decoder. See | 104 // A basic WAVE file decoder. See |
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582 BufferAndCopyPcmDataToBus(input_fd, | 582 BufferAndCopyPcmDataToBus(input_fd, |
583 destination_bus, | 583 destination_bus, |
584 number_of_channels, | 584 number_of_channels, |
585 file_sample_rate); | 585 file_sample_rate); |
586 } | 586 } |
587 | 587 |
588 return true; | 588 return true; |
589 } | 589 } |
590 | 590 |
591 } // namespace content | 591 } // namespace content |
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