media/base/video_decoder_config.cc

   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 "media/base/video_frame.h"
   9
  10 namespace media {
  11
  12 VideoCodec VideoCodecProfileToVideoCodec(VideoCodecProfile profile) {
  13   switch (profile) {
  14     case VIDEO_CODEC_PROFILE_UNKNOWN:
  15       return kUnknownVideoCodec;
  16     case H264PROFILE_BASELINE:
  17     case H264PROFILE_MAIN:
  18     case H264PROFILE_EXTENDED:
  19     case H264PROFILE_HIGH:
  20     case H264PROFILE_HIGH10PROFILE:
  21     case H264PROFILE_HIGH422PROFILE:
  22     case H264PROFILE_HIGH444PREDICTIVEPROFILE:
  23     case H264PROFILE_SCALABLEBASELINE:
  24     case H264PROFILE_SCALABLEHIGH:
  25     case H264PROFILE_STEREOHIGH:
  26     case H264PROFILE_MULTIVIEWHIGH:
  27       return kCodecH264;
  28     case VP8PROFILE_ANY:
  29       return kCodecVP8;
  30     case VP9PROFILE_ANY:
  31       return kCodecVP9;
  32   }
  33   NOTREACHED();
  34   return kUnknownVideoCodec;
  35 }
  36
  37
  38 VideoDecoderConfig::VideoDecoderConfig()
  39     : codec_(kUnknownVideoCodec),
  40       profile_(VIDEO_CODEC_PROFILE_UNKNOWN),
  41       format_(PIXEL_FORMAT_UNKNOWN),
  42       is_encrypted_(false) {
  43 }
  44
  45 VideoDecoderConfig::VideoDecoderConfig(VideoCodec codec,
  46                                        VideoCodecProfile profile,
  47                                        VideoPixelFormat format,
  48                                        ColorSpace color_space,
  49                                        const gfx::Size& coded_size,
  50                                        const gfx::Rect& visible_rect,
  51                                        const gfx::Size& natural_size,
  52                                        const uint8* extra_data,
  53                                        size_t extra_data_size,
  54                                        bool is_encrypted) {
  55   Initialize(codec, profile, format, color_space, coded_size, visible_rect,
  56              natural_size, extra_data, extra_data_size, is_encrypted);
  57 }
  58
  59 VideoDecoderConfig::~VideoDecoderConfig() {}
  60
  61 void VideoDecoderConfig::Initialize(VideoCodec codec,
  62                                     VideoCodecProfile profile,
  63                                     VideoPixelFormat format,
  64                                     ColorSpace color_space,
  65                                     const gfx::Size& coded_size,
  66                                     const gfx::Rect& visible_rect,
  67                                     const gfx::Size& natural_size,
  68                                     const uint8* extra_data,
  69                                     size_t extra_data_size,
  70                                     bool is_encrypted) {
  71   CHECK((extra_data_size != 0) == (extra_data != NULL));
  72
  73   codec_ = codec;
  74   profile_ = profile;
  75   format_ = format;
  76   color_space_ = color_space;
  77   coded_size_ = coded_size;
  78   visible_rect_ = visible_rect;
  79   natural_size_ = natural_size;
  80   extra_data_.assign(extra_data, extra_data + extra_data_size);
  81   is_encrypted_ = is_encrypted;
  82 }
  83
  84 bool VideoDecoderConfig::IsValidConfig() const {
  85   return codec_ != kUnknownVideoCodec &&
  86       natural_size_.width() > 0 &&
  87       natural_size_.height() > 0 &&
  88       VideoFrame::IsValidConfig(format_, VideoFrame::STORAGE_UNOWNED_MEMORY,
  89                                 coded_size_, visible_rect_, natural_size_);
  90 }
  91
  92 bool VideoDecoderConfig::Matches(const VideoDecoderConfig& config) const {
  93   return ((codec() == config.codec()) &&
  94           (format() == config.format()) &&
  95           (profile() == config.profile()) &&
  96           (coded_size() == config.coded_size()) &&
  97           (visible_rect() == config.visible_rect()) &&
  98           (natural_size() == config.natural_size()) &&
  99           (extra_data_size() == config.extra_data_size()) &&
 100           (!extra_data() || !memcmp(extra_data(), config.extra_data(),
 101                                     extra_data_size())) &&
 102           (is_encrypted() == config.is_encrypted()));
 103 }
 104
 105 std::string VideoDecoderConfig::AsHumanReadableString() const {
 106   std::ostringstream s;
 107   s << "codec: " << GetHumanReadableCodecName()
 108     << " format: " << format()
 109     << " profile: " << profile()
 110     << " coded size: [" << coded_size().width()
 111     << "," << coded_size().height() << "]"
 112     << " visible rect: [" << visible_rect().x()
 113     << "," << visible_rect().y()
 114     << "," << visible_rect().width()
 115     << "," << visible_rect().height() << "]"
 116     << " natural size: [" << natural_size().width()
 117     << "," << natural_size().height() << "]"
 118     << " has extra data? " << (extra_data() ? "true" : "false")
 119     << " encrypted? " << (is_encrypted() ? "true" : "false");
 120   return s.str();
 121 }
 122
 123 // The names come from src/third_party/ffmpeg/libavcodec/codec_desc.c
 124 std::string VideoDecoderConfig::GetHumanReadableCodecName() const {
 125   switch (codec()) {
 126     case kUnknownVideoCodec:
 127       return "unknown";
 128     case kCodecH264:
 129       return "h264";
 130     case kCodecVC1:
 131       return "vc1";
 132     case kCodecMPEG2:
 133       return "mpeg2video";
 134     case kCodecMPEG4:
 135       return "mpeg4";
 136     case kCodecTheora:
 137       return "theora";
 138     case kCodecVP8:
 139       return "vp8";
 140     case kCodecVP9:
 141       return "vp9";
 142   }
 143   NOTREACHED();
 144   return "";
 145 }
 146
 147 const uint8* VideoDecoderConfig::extra_data() const {
 148   if (extra_data_.empty())
 149     return NULL;
 150   return &extra_data_[0];
 151 }
 152
 153 }  // namespace media