michael@0: // Copyright (c) 2012 The Chromium Authors. All rights reserved.
michael@0: // Use of this source code is governed by a BSD-style license that can be
michael@0: // found in the LICENSE file.
michael@0: 
michael@0: #include "mp4_demuxer/video_decoder_config.h"
michael@0: 
michael@0: #include <sstream>
michael@0: #include <string.h>
michael@0: 
michael@0: namespace mp4_demuxer {
michael@0: 
michael@0: VideoDecoderConfig::VideoDecoderConfig()
michael@0:     : codec_(kUnknownVideoCodec),
michael@0:       profile_(VIDEO_CODEC_PROFILE_UNKNOWN),
michael@0:       format_(VideoFrameFormat::INVALID),
michael@0:       is_encrypted_(false) {
michael@0: }
michael@0: 
michael@0: VideoDecoderConfig::VideoDecoderConfig(VideoCodec codec,
michael@0:                                        VideoCodecProfile profile,
michael@0:                                        VideoFrameFormat format,
michael@0:                                        const IntSize& coded_size,
michael@0:                                        const IntRect& visible_rect,
michael@0:                                        const IntSize& natural_size,
michael@0:                                        const uint8_t* extra_data,
michael@0:                                        size_t extra_data_size,
michael@0:                                        bool is_encrypted) {
michael@0:   Initialize(codec, profile, format, coded_size, visible_rect, natural_size,
michael@0:              extra_data, extra_data_size, is_encrypted, true);
michael@0: }
michael@0: 
michael@0: VideoDecoderConfig::~VideoDecoderConfig() {}
michael@0: 
michael@0: // Some videos just want to watch the world burn, with a height of 0; cap the
michael@0: // "infinite" aspect ratio resulting.
michael@0: static const int kInfiniteRatio = 99999;
michael@0: 
michael@0: // Common aspect ratios (multiplied by 100 and truncated) used for histogramming
michael@0: // video sizes.  These were taken on 20111103 from
michael@0: // http://wikipedia.org/wiki/Aspect_ratio_(image)#Previous_and_currently_used_aspect_ratios
michael@0: static const int kCommonAspectRatios100[] = {
michael@0:   100, 115, 133, 137, 143, 150, 155, 160, 166, 175, 177, 185, 200, 210, 220,
michael@0:   221, 235, 237, 240, 255, 259, 266, 276, 293, 400, 1200, kInfiniteRatio,
michael@0: };
michael@0: 
michael@0: void VideoDecoderConfig::Initialize(VideoCodec codec,
michael@0:                                     VideoCodecProfile profile,
michael@0:                                     VideoFrameFormat format,
michael@0:                                     const IntSize& coded_size,
michael@0:                                     const IntRect& visible_rect,
michael@0:                                     const IntSize& natural_size,
michael@0:                                     const uint8_t* extra_data,
michael@0:                                     size_t extra_data_size,
michael@0:                                     bool is_encrypted,
michael@0:                                     bool record_stats) {
michael@0:   CHECK((extra_data_size != 0) == (extra_data != NULL));
michael@0: 
michael@0:   codec_ = codec;
michael@0:   profile_ = profile;
michael@0:   format_ = format;
michael@0:   coded_size_ = coded_size;
michael@0:   visible_rect_ = visible_rect;
michael@0:   natural_size_ = natural_size;
michael@0:   extra_data_.assign(extra_data, extra_data + extra_data_size);
michael@0:   is_encrypted_ = is_encrypted;
michael@0: }
michael@0: 
michael@0: bool VideoDecoderConfig::IsValidConfig() const {
michael@0:   return codec_ != kUnknownVideoCodec &&
michael@0:       natural_size_.width() > 0 &&
michael@0:       natural_size_.height() > 0 &&
michael@0: 
michael@0:       // Copied from:
michael@0:       // VideoFrame::IsValidConfig(format_, coded_size_, visible_rect_, natural_size_)
michael@0:       format_ != VideoFrameFormat::INVALID &&
michael@0:       !coded_size_.IsEmpty() &&
michael@0:       coded_size_.GetArea() <= kMaxCanvas &&
michael@0:       coded_size_.width() <= kMaxDimension &&
michael@0:       coded_size_.height() <= kMaxDimension &&
michael@0:       !visible_rect_.IsEmpty() &&
michael@0:       visible_rect_.x() >= 0 && visible_rect_.y() >= 0 &&
michael@0:       visible_rect_.right() <= coded_size_.width() &&
michael@0:       visible_rect_.bottom() <= coded_size_.height() &&
michael@0:       !natural_size_.IsEmpty() &&
michael@0:       natural_size_.GetArea() <= kMaxCanvas &&
michael@0:       natural_size_.width() <= kMaxDimension &&
michael@0:       natural_size_.height() <= kMaxDimension;
michael@0: }
michael@0: 
michael@0: bool VideoDecoderConfig::Matches(const VideoDecoderConfig& config) const {
michael@0:   return ((codec() == config.codec()) &&
michael@0:           (format() == config.format()) &&
michael@0:           (profile() == config.profile()) &&
michael@0:           (coded_size() == config.coded_size()) &&
michael@0:           (visible_rect() == config.visible_rect()) &&
michael@0:           (natural_size() == config.natural_size()) &&
michael@0:           (extra_data_size() == config.extra_data_size()) &&
michael@0:           (!extra_data() || !memcmp(extra_data(), config.extra_data(),
michael@0:                                     extra_data_size())) &&
michael@0:           (is_encrypted() == config.is_encrypted()));
michael@0: }
michael@0: 
michael@0: std::string VideoDecoderConfig::AsHumanReadableString() const {
michael@0:   std::ostringstream s;
michael@0:   s << "codec: " << codec()
michael@0:     << " format: " << format()
michael@0:     << " profile: " << profile()
michael@0:     << " coded size: [" << coded_size().width()
michael@0:     << "," << coded_size().height() << "]"
michael@0:     << " visible rect: [" << visible_rect().x()
michael@0:     << "," << visible_rect().y()
michael@0:     << "," << visible_rect().width()
michael@0:     << "," << visible_rect().height() << "]"
michael@0:     << " natural size: [" << natural_size().width()
michael@0:     << "," << natural_size().height() << "]"
michael@0:     << " has extra data? " << (extra_data() ? "true" : "false")
michael@0:     << " encrypted? " << (is_encrypted() ? "true" : "false");
michael@0:   return s.str();
michael@0: }
michael@0: 
michael@0: VideoCodec VideoDecoderConfig::codec() const {
michael@0:   return codec_;
michael@0: }
michael@0: 
michael@0: VideoCodecProfile VideoDecoderConfig::profile() const {
michael@0:   return profile_;
michael@0: }
michael@0: 
michael@0: VideoFrameFormat VideoDecoderConfig::format() const {
michael@0:   return format_;
michael@0: }
michael@0: 
michael@0: IntSize VideoDecoderConfig::coded_size() const {
michael@0:   return coded_size_;
michael@0: }
michael@0: 
michael@0: IntRect VideoDecoderConfig::visible_rect() const {
michael@0:   return visible_rect_;
michael@0: }
michael@0: 
michael@0: IntSize VideoDecoderConfig::natural_size() const {
michael@0:   return natural_size_;
michael@0: }
michael@0: 
michael@0: const uint8_t* VideoDecoderConfig::extra_data() const {
michael@0:   if (extra_data_.empty())
michael@0:     return NULL;
michael@0:   return &extra_data_[0];
michael@0: }
michael@0: 
michael@0: size_t VideoDecoderConfig::extra_data_size() const {
michael@0:   return extra_data_.size();
michael@0: }
michael@0: 
michael@0: bool VideoDecoderConfig::is_encrypted() const {
michael@0:   return is_encrypted_;
michael@0: }
michael@0: 
michael@0: }  // namespace mp4_demuxer