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
3 // found in the LICENSE file.
4
5 #include "media/base/video_decoder_config.h"
6
7 #include "base/logging.h"
8 #include "base/metrics/histogram.h"
9
10 namespace media {
11
VideoDecoderConfig()12 VideoDecoderConfig::VideoDecoderConfig()
13 : codec_(kUnknownVideoCodec),
14 profile_(VIDEO_CODEC_PROFILE_UNKNOWN),
15 format_(VideoFrame::UNKNOWN),
16 is_encrypted_(false) {
17 }
18
VideoDecoderConfig(VideoCodec codec,VideoCodecProfile profile,VideoFrame::Format format,const gfx::Size & coded_size,const gfx::Rect & visible_rect,const gfx::Size & natural_size,const uint8 * extra_data,size_t extra_data_size,bool is_encrypted)19 VideoDecoderConfig::VideoDecoderConfig(VideoCodec codec,
20 VideoCodecProfile profile,
21 VideoFrame::Format format,
22 const gfx::Size& coded_size,
23 const gfx::Rect& visible_rect,
24 const gfx::Size& natural_size,
25 const uint8* extra_data,
26 size_t extra_data_size,
27 bool is_encrypted) {
28 Initialize(codec, profile, format, coded_size, visible_rect, natural_size,
29 extra_data, extra_data_size, is_encrypted, true);
30 }
31
~VideoDecoderConfig()32 VideoDecoderConfig::~VideoDecoderConfig() {}
33
34 // Some videos just want to watch the world burn, with a height of 0; cap the
35 // "infinite" aspect ratio resulting.
36 static const int kInfiniteRatio = 99999;
37
38 // Common aspect ratios (multiplied by 100 and truncated) used for histogramming
39 // video sizes. These were taken on 20111103 from
40 // http://wikipedia.org/wiki/Aspect_ratio_(image)#Previous_and_currently_used_aspect_ratios
41 static const int kCommonAspectRatios100[] = {
42 100, 115, 133, 137, 143, 150, 155, 160, 166, 175, 177, 185, 200, 210, 220,
43 221, 235, 237, 240, 255, 259, 266, 276, 293, 400, 1200, kInfiniteRatio,
44 };
45
46 template<class T> // T has int width() & height() methods.
UmaHistogramAspectRatio(const char * name,const T & size)47 static void UmaHistogramAspectRatio(const char* name, const T& size) {
48 UMA_HISTOGRAM_CUSTOM_ENUMERATION(
49 name,
50 // Intentionally use integer division to truncate the result.
51 size.height() ? (size.width() * 100) / size.height() : kInfiniteRatio,
52 base::CustomHistogram::ArrayToCustomRanges(
53 kCommonAspectRatios100, arraysize(kCommonAspectRatios100)));
54 }
55
Initialize(VideoCodec codec,VideoCodecProfile profile,VideoFrame::Format format,const gfx::Size & coded_size,const gfx::Rect & visible_rect,const gfx::Size & natural_size,const uint8 * extra_data,size_t extra_data_size,bool is_encrypted,bool record_stats)56 void VideoDecoderConfig::Initialize(VideoCodec codec,
57 VideoCodecProfile profile,
58 VideoFrame::Format format,
59 const gfx::Size& coded_size,
60 const gfx::Rect& visible_rect,
61 const gfx::Size& natural_size,
62 const uint8* extra_data,
63 size_t extra_data_size,
64 bool is_encrypted,
65 bool record_stats) {
66 CHECK((extra_data_size != 0) == (extra_data != NULL));
67
68 if (record_stats) {
69 UMA_HISTOGRAM_ENUMERATION("Media.VideoCodec", codec, kVideoCodecMax + 1);
70 // Drop UNKNOWN because U_H_E() uses one bucket for all values less than 1.
71 if (profile >= 0) {
72 UMA_HISTOGRAM_ENUMERATION("Media.VideoCodecProfile", profile,
73 VIDEO_CODEC_PROFILE_MAX + 1);
74 }
75 UMA_HISTOGRAM_COUNTS_10000("Media.VideoCodedWidth", coded_size.width());
76 UmaHistogramAspectRatio("Media.VideoCodedAspectRatio", coded_size);
77 UMA_HISTOGRAM_COUNTS_10000("Media.VideoVisibleWidth", visible_rect.width());
78 UmaHistogramAspectRatio("Media.VideoVisibleAspectRatio", visible_rect);
79 UMA_HISTOGRAM_ENUMERATION(
80 "Media.VideoPixelFormat", format, VideoFrame::FORMAT_MAX + 1);
81 }
82
83 codec_ = codec;
84 profile_ = profile;
85 format_ = format;
86 coded_size_ = coded_size;
87 visible_rect_ = visible_rect;
88 natural_size_ = natural_size;
89 extra_data_.assign(extra_data, extra_data + extra_data_size);
90 is_encrypted_ = is_encrypted;
91 }
92
IsValidConfig() const93 bool VideoDecoderConfig::IsValidConfig() const {
94 return codec_ != kUnknownVideoCodec &&
95 natural_size_.width() > 0 &&
96 natural_size_.height() > 0 &&
97 VideoFrame::IsValidConfig(format_, coded_size_, visible_rect_,
98 natural_size_);
99 }
100
Matches(const VideoDecoderConfig & config) const101 bool VideoDecoderConfig::Matches(const VideoDecoderConfig& config) const {
102 return ((codec() == config.codec()) &&
103 (format() == config.format()) &&
104 (profile() == config.profile()) &&
105 (coded_size() == config.coded_size()) &&
106 (visible_rect() == config.visible_rect()) &&
107 (natural_size() == config.natural_size()) &&
108 (extra_data_size() == config.extra_data_size()) &&
109 (!extra_data() || !memcmp(extra_data(), config.extra_data(),
110 extra_data_size())) &&
111 (is_encrypted() == config.is_encrypted()));
112 }
113
AsHumanReadableString() const114 std::string VideoDecoderConfig::AsHumanReadableString() const {
115 std::ostringstream s;
116 s << "codec: " << codec()
117 << " format: " << format()
118 << " profile: " << profile()
119 << " coded size: [" << coded_size().width()
120 << "," << coded_size().height() << "]"
121 << " visible rect: [" << visible_rect().x()
122 << "," << visible_rect().y()
123 << "," << visible_rect().width()
124 << "," << visible_rect().height() << "]"
125 << " natural size: [" << natural_size().width()
126 << "," << natural_size().height() << "]"
127 << " has extra data? " << (extra_data() ? "true" : "false")
128 << " encrypted? " << (is_encrypted() ? "true" : "false");
129 return s.str();
130 }
131
codec() const132 VideoCodec VideoDecoderConfig::codec() const {
133 return codec_;
134 }
135
profile() const136 VideoCodecProfile VideoDecoderConfig::profile() const {
137 return profile_;
138 }
139
format() const140 VideoFrame::Format VideoDecoderConfig::format() const {
141 return format_;
142 }
143
coded_size() const144 gfx::Size VideoDecoderConfig::coded_size() const {
145 return coded_size_;
146 }
147
visible_rect() const148 gfx::Rect VideoDecoderConfig::visible_rect() const {
149 return visible_rect_;
150 }
151
natural_size() const152 gfx::Size VideoDecoderConfig::natural_size() const {
153 return natural_size_;
154 }
155
extra_data() const156 const uint8* VideoDecoderConfig::extra_data() const {
157 if (extra_data_.empty())
158 return NULL;
159 return &extra_data_[0];
160 }
161
extra_data_size() const162 size_t VideoDecoderConfig::extra_data_size() const {
163 return extra_data_.size();
164 }
165
is_encrypted() const166 bool VideoDecoderConfig::is_encrypted() const {
167 return is_encrypted_;
168 }
169
170 } // namespace media
171