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// Copyright (c) 2011 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 <cmath>
#include "base/logging.h"
namespace media {
VideoDecoderConfig::VideoDecoderConfig()
: codec_(kUnknownVideoCodec),
format_(VideoFrame::INVALID),
frame_rate_numerator_(0),
frame_rate_denominator_(0),
aspect_ratio_numerator_(0),
aspect_ratio_denominator_(0),
extra_data_size_(0) {
}
VideoDecoderConfig::VideoDecoderConfig(VideoCodec codec,
VideoFrame::Format format,
const gfx::Size& coded_size,
const gfx::Rect& visible_rect,
int frame_rate_numerator,
int frame_rate_denominator,
int aspect_ratio_numerator,
int aspect_ratio_denominator,
const uint8* extra_data,
size_t extra_data_size) {
Initialize(codec, format, coded_size, visible_rect,
frame_rate_numerator, frame_rate_denominator,
aspect_ratio_numerator, aspect_ratio_denominator,
extra_data, extra_data_size);
}
VideoDecoderConfig::~VideoDecoderConfig() {}
void VideoDecoderConfig::Initialize(VideoCodec codec,
VideoFrame::Format format,
const gfx::Size& coded_size,
const gfx::Rect& visible_rect,
int frame_rate_numerator,
int frame_rate_denominator,
int aspect_ratio_numerator,
int aspect_ratio_denominator,
const uint8* extra_data,
size_t extra_data_size) {
CHECK((extra_data_size != 0) == (extra_data != NULL));
codec_ = codec;
format_ = format;
coded_size_ = coded_size;
visible_rect_ = visible_rect;
frame_rate_numerator_ = frame_rate_numerator;
frame_rate_denominator_ = frame_rate_denominator;
aspect_ratio_numerator_ = aspect_ratio_numerator;
aspect_ratio_denominator_ = aspect_ratio_denominator;
extra_data_size_ = extra_data_size;
if (extra_data_size_ > 0) {
extra_data_.reset(new uint8[extra_data_size_]);
memcpy(extra_data_.get(), extra_data, extra_data_size_);
} else {
extra_data_.reset();
}
// Calculate the natural size given the aspect ratio and visible rect.
if (aspect_ratio_denominator == 0) {
natural_size_.SetSize(0, 0);
return;
}
double aspect_ratio = aspect_ratio_numerator /
static_cast<double>(aspect_ratio_denominator);
int width = floor(visible_rect.width() * aspect_ratio + 0.5);
int height = visible_rect.height();
// An even width makes things easier for YV12 and appears to be the behavior
// expected by WebKit layout tests.
natural_size_.SetSize(width & ~1, height);
}
bool VideoDecoderConfig::IsValidConfig() const {
return codec_ != kUnknownVideoCodec &&
format_ != VideoFrame::INVALID &&
frame_rate_numerator_ > 0 &&
frame_rate_denominator_ > 0 &&
aspect_ratio_numerator_ > 0 &&
aspect_ratio_denominator_ > 0;
}
VideoCodec VideoDecoderConfig::codec() const {
return codec_;
}
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_;
}
int VideoDecoderConfig::frame_rate_numerator() const {
return frame_rate_numerator_;
}
int VideoDecoderConfig::frame_rate_denominator() const {
return frame_rate_denominator_;
}
int VideoDecoderConfig::aspect_ratio_numerator() const {
return aspect_ratio_numerator_;
}
int VideoDecoderConfig::aspect_ratio_denominator() const {
return aspect_ratio_denominator_;
}
uint8* VideoDecoderConfig::extra_data() const {
return extra_data_.get();
}
size_t VideoDecoderConfig::extra_data_size() const {
return extra_data_size_;
}
} // namespace media
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