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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "media/base/video_decoder_config.h"
#include "base/logging.h"
#include "base/metrics/histogram.h"
namespace media {
VideoDecoderConfig::VideoDecoderConfig()
: codec_(kUnknownVideoCodec),
profile_(VIDEO_CODEC_PROFILE_UNKNOWN),
format_(VideoFrame::UNKNOWN),
is_encrypted_(false) {
}
VideoDecoderConfig::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) {
Initialize(codec, profile, format, coded_size, visible_rect, natural_size,
extra_data, extra_data_size, is_encrypted, true);
}
VideoDecoderConfig::~VideoDecoderConfig() {}
// Some videos just want to watch the world burn, with a height of 0; cap the
// "infinite" aspect ratio resulting.
static const int kInfiniteRatio = 99999;
// Common aspect ratios (multiplied by 100 and truncated) used for histogramming
// video sizes. These were taken on 20111103 from
// http://wikipedia.org/wiki/Aspect_ratio_(image)#Previous_and_currently_used_aspect_ratios
static const int kCommonAspectRatios100[] = {
100, 115, 133, 137, 143, 150, 155, 160, 166, 175, 177, 185, 200, 210, 220,
221, 235, 237, 240, 255, 259, 266, 276, 293, 400, 1200, kInfiniteRatio,
};
template<class T> // T has int width() & height() methods.
static void UmaHistogramAspectRatio(const char* name, const T& size) {
UMA_HISTOGRAM_CUSTOM_ENUMERATION(
name,
// Intentionally use integer division to truncate the result.
size.height() ? (size.width() * 100) / size.height() : kInfiniteRatio,
base::CustomHistogram::ArrayToCustomRanges(
kCommonAspectRatios100, arraysize(kCommonAspectRatios100)));
}
void VideoDecoderConfig::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) {
CHECK((extra_data_size != 0) == (extra_data != NULL));
if (record_stats) {
UMA_HISTOGRAM_ENUMERATION("Media.VideoCodec", codec, kVideoCodecMax + 1);
// Drop UNKNOWN because U_H_E() uses one bucket for all values less than 1.
if (profile >= 0) {
UMA_HISTOGRAM_ENUMERATION("Media.VideoCodecProfile", profile,
VIDEO_CODEC_PROFILE_MAX + 1);
}
UMA_HISTOGRAM_COUNTS_10000("Media.VideoCodedWidth", coded_size.width());
UmaHistogramAspectRatio("Media.VideoCodedAspectRatio", coded_size);
UMA_HISTOGRAM_COUNTS_10000("Media.VideoVisibleWidth", visible_rect.width());
UmaHistogramAspectRatio("Media.VideoVisibleAspectRatio", visible_rect);
UMA_HISTOGRAM_ENUMERATION(
"Media.VideoPixelFormat", format, VideoFrame::HISTOGRAM_MAX);
}
codec_ = codec;
profile_ = profile;
format_ = format;
coded_size_ = coded_size;
visible_rect_ = visible_rect;
natural_size_ = natural_size;
extra_data_.assign(extra_data, extra_data + extra_data_size);
is_encrypted_ = is_encrypted;
}
bool VideoDecoderConfig::IsValidConfig() const {
return codec_ != kUnknownVideoCodec &&
natural_size_.width() > 0 &&
natural_size_.height() > 0 &&
VideoFrame::IsValidConfig(format_, coded_size_, visible_rect_,
natural_size_);
}
bool VideoDecoderConfig::Matches(const VideoDecoderConfig& config) const {
return ((codec() == config.codec()) &&
(format() == config.format()) &&
(profile() == config.profile()) &&
(coded_size() == config.coded_size()) &&
(visible_rect() == config.visible_rect()) &&
(natural_size() == config.natural_size()) &&
(extra_data_size() == config.extra_data_size()) &&
(!extra_data() || !memcmp(extra_data(), config.extra_data(),
extra_data_size())) &&
(is_encrypted() == config.is_encrypted()));
}
std::string VideoDecoderConfig::AsHumanReadableString() const {
std::ostringstream s;
s << "codec: " << codec()
<< " format: " << format()
<< " profile: " << profile()
<< " coded size: [" << coded_size().width()
<< "," << coded_size().height() << "]"
<< " visible rect: [" << visible_rect().x()
<< "," << visible_rect().y()
<< "," << visible_rect().width()
<< "," << visible_rect().height() << "]"
<< " natural size: [" << natural_size().width()
<< "," << natural_size().height() << "]"
<< " has extra data? " << (extra_data() ? "true" : "false")
<< " encrypted? " << (is_encrypted() ? "true" : "false");
return s.str();
}
VideoCodec VideoDecoderConfig::codec() const {
return codec_;
}
VideoCodecProfile VideoDecoderConfig::profile() const {
return profile_;
}
VideoFrame::Format VideoDecoderConfig::format() const {
return format_;
}
gfx::Size VideoDecoderConfig::coded_size() const {
return coded_size_;
}
gfx::Rect VideoDecoderConfig::visible_rect() const {
return visible_rect_;
}
gfx::Size VideoDecoderConfig::natural_size() const {
return natural_size_;
}
const uint8* VideoDecoderConfig::extra_data() const {
if (extra_data_.empty())
return NULL;
return &extra_data_[0];
}
size_t VideoDecoderConfig::extra_data_size() const {
return extra_data_.size();
}
bool VideoDecoderConfig::is_encrypted() const {
return is_encrypted_;
}
} // namespace media
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