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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/ffmpeg/ffmpeg_common.h" | 5 #include "media/ffmpeg/ffmpeg_common.h" |
6 | 6 |
7 #include "base/basictypes.h" | |
8 #include "base/logging.h" | 7 #include "base/logging.h" |
9 #include "base/memory/scoped_ptr.h" | 8 #include "base/memory/scoped_ptr.h" |
10 #include "base/sha1.h" | 9 #include "base/sha1.h" |
11 #include "base/strings/string_number_conversions.h" | 10 #include "base/strings/string_number_conversions.h" |
12 #include "base/strings/string_split.h" | 11 #include "base/strings/string_split.h" |
13 #include "base/strings/string_util.h" | 12 #include "base/strings/string_util.h" |
14 #include "media/base/decoder_buffer.h" | 13 #include "media/base/decoder_buffer.h" |
15 #include "media/base/video_decoder_config.h" | 14 #include "media/base/video_decoder_config.h" |
16 #include "media/base/video_util.h" | 15 #include "media/base/video_util.h" |
17 | 16 |
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45 "VideoFrame padding size does not fit ffmpeg requirement"); | 44 "VideoFrame padding size does not fit ffmpeg requirement"); |
46 | 45 |
47 static_assert( | 46 static_assert( |
48 VideoFrame::kFrameAddressAlignment >= kFFmpegBufferAddressAlignment && | 47 VideoFrame::kFrameAddressAlignment >= kFFmpegBufferAddressAlignment && |
49 VideoFrame::kFrameAddressAlignment % kFFmpegBufferAddressAlignment == 0, | 48 VideoFrame::kFrameAddressAlignment % kFFmpegBufferAddressAlignment == 0, |
50 "VideoFrame frame address alignment does not fit ffmpeg requirement"); | 49 "VideoFrame frame address alignment does not fit ffmpeg requirement"); |
51 | 50 |
52 static const AVRational kMicrosBase = { 1, base::Time::kMicrosecondsPerSecond }; | 51 static const AVRational kMicrosBase = { 1, base::Time::kMicrosecondsPerSecond }; |
53 | 52 |
54 base::TimeDelta ConvertFromTimeBase(const AVRational& time_base, | 53 base::TimeDelta ConvertFromTimeBase(const AVRational& time_base, |
55 int64 timestamp) { | 54 int64_t timestamp) { |
56 int64 microseconds = av_rescale_q(timestamp, time_base, kMicrosBase); | 55 int64_t microseconds = av_rescale_q(timestamp, time_base, kMicrosBase); |
57 return base::TimeDelta::FromMicroseconds(microseconds); | 56 return base::TimeDelta::FromMicroseconds(microseconds); |
58 } | 57 } |
59 | 58 |
60 int64 ConvertToTimeBase(const AVRational& time_base, | 59 int64_t ConvertToTimeBase(const AVRational& time_base, |
61 const base::TimeDelta& timestamp) { | 60 const base::TimeDelta& timestamp) { |
62 return av_rescale_q(timestamp.InMicroseconds(), kMicrosBase, time_base); | 61 return av_rescale_q(timestamp.InMicroseconds(), kMicrosBase, time_base); |
63 } | 62 } |
64 | 63 |
65 // Converts an FFmpeg audio codec ID into its corresponding supported codec id. | 64 // Converts an FFmpeg audio codec ID into its corresponding supported codec id. |
66 static AudioCodec CodecIDToAudioCodec(AVCodecID codec_id) { | 65 static AudioCodec CodecIDToAudioCodec(AVCodecID codec_id) { |
67 switch (codec_id) { | 66 switch (codec_id) { |
68 case AV_CODEC_ID_AAC: | 67 case AV_CODEC_ID_AAC: |
69 return kCodecAAC; | 68 return kCodecAAC; |
70 case AV_CODEC_ID_MP3: | 69 case AV_CODEC_ID_MP3: |
71 return kCodecMP3; | 70 return kCodecMP3; |
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690 } | 689 } |
691 | 690 |
692 int32_t HashCodecName(const char* codec_name) { | 691 int32_t HashCodecName(const char* codec_name) { |
693 // Use the first 32-bits from the SHA1 hash as the identifier. | 692 // Use the first 32-bits from the SHA1 hash as the identifier. |
694 int32_t hash; | 693 int32_t hash; |
695 memcpy(&hash, base::SHA1HashString(codec_name).substr(0, 4).c_str(), 4); | 694 memcpy(&hash, base::SHA1HashString(codec_name).substr(0, 4).c_str(), 4); |
696 return hash; | 695 return hash; |
697 } | 696 } |
698 | 697 |
699 } // namespace media | 698 } // namespace media |
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