Implemented HEVC video demuxing and parsing

net/base/mime_util.cc

 // 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 <algorithm>
 #include <iterator>
 #include <map>
 #include <string>
 
 #include "base/containers/hash_tables.h"
@@ skipping 27 matching lines @@
     MPEG2_AAC_MAIN,
     MPEG2_AAC_SSR,
     MPEG4_AAC_LC,
     MPEG4_AAC_SBR_v1,
     MPEG4_AAC_SBR_PS_v2,
     VORBIS,
     OPUS,
     H264_BASELINE,
     H264_MAIN,
     H264_HIGH,
+    HEVC_MAIN,
     VP8,
     VP9,
     THEORA
   };
 
   bool GetMimeTypeFromExtension(const base::FilePath::StringType& ext,
                                 std::string* mime_type) const;
 
   bool GetMimeTypeFromFile(const base::FilePath& file_path,
                            std::string* mime_type) const;
@@ skipping 399 matching lines @@
     case MimeUtil::MPEG4_AAC_LC:
     case MimeUtil::MPEG4_AAC_SBR_v1:
     case MimeUtil::MPEG4_AAC_SBR_PS_v2:
     case MimeUtil::H264_BASELINE:
     case MimeUtil::H264_MAIN:
     case MimeUtil::H264_HIGH:
     case MimeUtil::VP8:
     case MimeUtil::VORBIS:
       return true;
 
+    case MimeUtil::HEVC_MAIN:
+      return false;
+
     case MimeUtil::MPEG2_AAC_LC:
     case MimeUtil::MPEG2_AAC_MAIN:
     case MimeUtil::MPEG2_AAC_SSR:
       // MPEG-2 variants of AAC are not supported on Android.
       return false;
 
     case MimeUtil::VP9:
       // VP9 is supported only in KitKat+ (API Level 19).
       return base::android::BuildInfo::GetInstance()->sdk_int() >= 19;
 
@@ skipping 38 matching lines @@
 //                 compatibility)
 //   mp4a.40.29  - MPEG-4 HE-AAC v2 (AAC LC + SBR + PS)
 //
 //   avc1.42E0xx - H.264 Baseline
 //   avc1.4D40xx - H.264 Main
 //   avc1.6400xx - H.264 High
 static const char kMP4AudioCodecsExpression[] =
     "mp4a.66,mp4a.67,mp4a.68,mp4a.69,mp4a.6B,mp4a.40.2,mp4a.40.02,mp4a.40.5,"
     "mp4a.40.05,mp4a.40.29";
 static const char kMP4VideoCodecsExpression[] =
-    "avc1.42E00A,avc1.4D400A,avc1.64000A,"
+    "avc1.42E00A,avc1.4D400A,avc1.64000A,hev1,hvc1,"
     "mp4a.66,mp4a.67,mp4a.68,mp4a.69,mp4a.6B,mp4a.40.2,mp4a.40.02,mp4a.40.5,"
     "mp4a.40.05,mp4a.40.29";
 
 static const MediaFormatStrict format_codec_mappings[] = {
   { "video/webm", "opus,vorbis,vp8,vp8.0,vp9,vp9.0" },
   { "audio/webm", "opus,vorbis" },
   { "audio/wav", "1" },
   { "audio/x-wav", "1" },
   { "video/ogg", "opus,theora,vorbis" },
   { "audio/ogg", "opus,vorbis" },
@@ skipping 13 matching lines @@
   const char* const codec_id;
   MimeUtil::Codec codec;
 };
 
 // List of codec IDs that provide enough information to determine the
 // codec and profile being requested.
 //
 // The "mp4a" strings come from RFC 6381.
 static const CodecIDMappings kUnambiguousCodecIDs[] = {
     {"1", MimeUtil::PCM},  // We only allow this for WAV so it isn't ambiguous.
+#if defined(ENABLE_HEVC_DEMUXING)
+    {"hev1", MimeUtil::HEVC_MAIN},
+    {"hvc1", MimeUtil::HEVC_MAIN},
+#endif
     {"mp3", MimeUtil::MP3},
     {"mp4a.66", MimeUtil::MPEG2_AAC_MAIN},
     {"mp4a.67", MimeUtil::MPEG2_AAC_LC},
     {"mp4a.68", MimeUtil::MPEG2_AAC_SSR},
     {"mp4a.69", MimeUtil::MP3},
     {"mp4a.6B", MimeUtil::MP3},
     {"mp4a.40.2", MimeUtil::MPEG4_AAC_LC},
     {"mp4a.40.02", MimeUtil::MPEG4_AAC_LC},
     {"mp4a.40.5", MimeUtil::MPEG4_AAC_SBR_v1},
     {"mp4a.40.05", MimeUtil::MPEG4_AAC_SBR_v1},
@@ skipping 432 matching lines @@
                              Codec* codec,
                              bool* is_ambiguous) const {
   StringToCodecMappings::const_iterator itr =
       string_to_codec_map_.find(codec_id);
   if (itr != string_to_codec_map_.end()) {
     *codec = itr->second.codec;
     *is_ambiguous = itr->second.is_ambiguous;
     return true;
   }
 
+#if defined(ENABLE_HEVC_DEMUXING)
+  if (StartsWithASCII(codec_id, "hev1.", true) ||
+      StartsWithASCII(codec_id, "hvc1.", true)) {
+    // TODO(servolk): Implement parsing of hevc codec ids as described in
+    // ETSI TS 126 244 standard section A.2.2, but for now allow any
+    // HEVC tiers/profiles and let decoder decide if it can handle that.
+    *codec = MimeUtil::HEVC_MAIN;
+    *is_ambiguous = false;
+    return true;
+  }
+#endif
+
   // If |codec_id| is not in |string_to_codec_map_|, then we assume that it is
   // an H.264 codec ID because currently those are the only ones that can't be
   // stored in the |string_to_codec_map_| and require parsing.
   return ParseH264CodecID(codec_id, codec, is_ambiguous);
 }
 
 bool MimeUtil::IsCodecSupported(Codec codec) const {
   DCHECK_NE(codec, INVALID_CODEC);
 
 #if defined(OS_ANDROID)
@@ skipping 10 matching lines @@
     case MP3:
     case MPEG2_AAC_LC:
     case MPEG2_AAC_MAIN:
     case MPEG2_AAC_SSR:
     case MPEG4_AAC_LC:
     case MPEG4_AAC_SBR_v1:
     case MPEG4_AAC_SBR_PS_v2:
     case H264_BASELINE:
     case H264_MAIN:
     case H264_HIGH:
+    case HEVC_MAIN:
       return true;
 
     case PCM:
     case VORBIS:
     case OPUS:
     case VP8:
     case VP9:
     case THEORA:
       return false;
   }
@@ skipping 328 matching lines @@
   post_data->append("\r\n" + value + "\r\n");
 }
 
 void AddMultipartFinalDelimiterForUpload(const std::string& mime_boundary,
                                          std::string* post_data) {
   DCHECK(post_data);
   post_data->append("--" + mime_boundary + "--\r\n");
 }
 
 }  // namespace net