update libwebm

Clears "auto_ptr deprecated" warnings when building with
clang v6.0.0

Requires C++11 support.

Change-Id: I5ea2744e73deeaa4e7b2599bacf0b6c9cf355a54

8 files changed, 74 insertions, 40 deletions

diff --git a/third_party/libwebm/Android.mk b/third_party/libwebm/Android.mk
index 8149a083f..b46ba101d 100644
--- a/third_party/libwebm/Android.mk
+++ b/third_party/libwebm/Android.mk
@@ -3,7 +3,7 @@ LOCAL_PATH:= $(call my-dir)
 include $(CLEAR_VARS)
 LOCAL_MODULE:= libwebm
 LOCAL_CPPFLAGS:=-D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS
-LOCAL_CPPFLAGS+=-D__STDC_LIMIT_MACROS -Wno-extern-c-compat
+LOCAL_CPPFLAGS+=-D__STDC_LIMIT_MACROS -std=c++11
 LOCAL_C_INCLUDES:= $(LOCAL_PATH)
 LOCAL_EXPORT_C_INCLUDES:= $(LOCAL_PATH)
 
diff --git a/third_party/libwebm/README.libvpx b/third_party/libwebm/README.libvpx
index ebb5ff2f4..6d8b0b4cc 100644
--- a/third_party/libwebm/README.libvpx
+++ b/third_party/libwebm/README.libvpx
@@ -1,5 +1,5 @@
 URL: https://chromium.googlesource.com/webm/libwebm
-Version: 0ae757087f5e6eb01dfea16cc09205b2425cfb74
+Version: af81f26025b7435fa9a14ad07c58b44cf9280430
 License: BSD
 License File: LICENSE.txt
 
@@ -7,4 +7,14 @@ Description:
 libwebm is used to handle WebM container I/O.
 
 Local Changes:
-* <none>
+Only keep:
+ - Android.mk
+ - AUTHORS.TXT
+ - common/
+    file_util.cc/h
+    hdr_util.cc/h
+    webmids.h
+ - LICENSE.TXT
+ - mkvmuxer/
+ - mkvparser/
+ - PATENTS.TXT
diff --git a/third_party/libwebm/common/file_util.cc b/third_party/libwebm/common/file_util.cc
index 6dab146dd..618ffc087 100644
--- a/third_party/libwebm/common/file_util.cc
+++ b/third_party/libwebm/common/file_util.cc
@@ -17,6 +17,7 @@
 #include <cstring>
 #include <fstream>
 #include <ios>
+#include <string>
 
 namespace libwebm {
 
@@ -41,7 +42,12 @@ std::string GetTempFileName() {
   return temp_file_name;
 #else
   char tmp_file_name[_MAX_PATH];
+#if defined _MSC_VER || defined MINGW_HAS_SECURE_API
   errno_t err = tmpnam_s(tmp_file_name);
+#else
+  char* fname_pointer = tmpnam(tmp_file_name);
+  errno_t err = (fname_pointer == &tmp_file_name[0]) ? 0 : -1;
+#endif
   if (err == 0) {
     return std::string(tmp_file_name);
   }
@@ -65,6 +71,15 @@ uint64_t GetFileSize(const std::string& file_name) {
   return file_size;
 }
 
+bool GetFileContents(const std::string& file_name, std::string* contents) {
+  std::ifstream file(file_name.c_str());
+  *contents = std::string(static_cast<size_t>(GetFileSize(file_name)), 0);
+  if (file.good() && contents->size()) {
+    file.read(&(*contents)[0], contents->size());
+  }
+  return !file.fail();
+}
+
 TempFileDeleter::TempFileDeleter() { file_name_ = GetTempFileName(); }
 
 TempFileDeleter::~TempFileDeleter() {
diff --git a/third_party/libwebm/common/file_util.h b/third_party/libwebm/common/file_util.h
index 0e71eac11..a87373464 100644
--- a/third_party/libwebm/common/file_util.h
+++ b/third_party/libwebm/common/file_util.h
@@ -22,6 +22,9 @@ std::string GetTempFileName();
 // Returns size of file specified by |file_name|, or 0 upon failure.
 uint64_t GetFileSize(const std::string& file_name);
 
+// Gets the contents file_name as a string. Returns false on error.
+bool GetFileContents(const std::string& file_name, std::string* contents);
+
 // Manages life of temporary file specified at time of construction. Deletes
 // file upon destruction.
 class TempFileDeleter {
@@ -38,4 +41,4 @@ class TempFileDeleter {
 
 }  // namespace libwebm
 
-#endif  // LIBWEBM_COMMON_FILE_UTIL_H_
\ No newline at end of file
+#endif  // LIBWEBM_COMMON_FILE_UTIL_H_
diff --git a/third_party/libwebm/common/hdr_util.cc b/third_party/libwebm/common/hdr_util.cc
index e1618ce75..916f7170b 100644
--- a/third_party/libwebm/common/hdr_util.cc
+++ b/third_party/libwebm/common/hdr_util.cc
@@ -36,10 +36,10 @@ bool CopyMasteringMetadata(const mkvparser::MasteringMetadata& parser_mm,
   if (MasteringMetadataValuePresent(parser_mm.luminance_min))
     muxer_mm->set_luminance_min(parser_mm.luminance_min);
 
-  PrimaryChromaticityPtr r_ptr(NULL);
-  PrimaryChromaticityPtr g_ptr(NULL);
-  PrimaryChromaticityPtr b_ptr(NULL);
-  PrimaryChromaticityPtr wp_ptr(NULL);
+  PrimaryChromaticityPtr r_ptr(nullptr);
+  PrimaryChromaticityPtr g_ptr(nullptr);
+  PrimaryChromaticityPtr b_ptr(nullptr);
+  PrimaryChromaticityPtr wp_ptr(nullptr);
 
   if (parser_mm.r) {
     if (!CopyPrimaryChromaticity(*parser_mm.r, &r_ptr))
diff --git a/third_party/libwebm/common/hdr_util.h b/third_party/libwebm/common/hdr_util.h
index 3ef5388fd..78e2eeb70 100644
--- a/third_party/libwebm/common/hdr_util.h
+++ b/third_party/libwebm/common/hdr_util.h
@@ -47,15 +47,7 @@ struct Vp9CodecFeatures {
   int chroma_subsampling;
 };
 
-// disable deprecation warnings for auto_ptr
-#if defined(__GNUC__) && __GNUC__ >= 5
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
-#endif
-typedef std::auto_ptr<mkvmuxer::PrimaryChromaticity> PrimaryChromaticityPtr;
-#if defined(__GNUC__) && __GNUC__ >= 5
-#pragma GCC diagnostic pop
-#endif
+typedef std::unique_ptr<mkvmuxer::PrimaryChromaticity> PrimaryChromaticityPtr;
 
 bool CopyPrimaryChromaticity(const mkvparser::PrimaryChromaticity& parser_pc,
                              PrimaryChromaticityPtr* muxer_pc);
diff --git a/third_party/libwebm/mkvmuxer/mkvmuxer.cc b/third_party/libwebm/mkvmuxer/mkvmuxer.cc
index 15b9a908d..481771db2 100644
--- a/third_party/libwebm/mkvmuxer/mkvmuxer.cc
+++ b/third_party/libwebm/mkvmuxer/mkvmuxer.cc
@@ -8,6 +8,8 @@
 
 #include "mkvmuxer/mkvmuxer.h"
 
+#include <stdint.h>
+
 #include <cfloat>
 #include <climits>
 #include <cstdio>
@@ -24,11 +26,6 @@
 #include "mkvmuxer/mkvwriter.h"
 #include "mkvparser/mkvparser.h"
 
-// disable deprecation warnings for auto_ptr
-#if defined(__GNUC__) && __GNUC__ >= 5
-#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
-#endif
-
 namespace mkvmuxer {
 
 const float PrimaryChromaticity::kChromaticityMin = 0.0f;
@@ -72,7 +69,7 @@ bool StrCpy(const char* src, char** dst_ptr) {
   return true;
 }
 
-typedef std::auto_ptr<PrimaryChromaticity> PrimaryChromaticityPtr;
+typedef std::unique_ptr<PrimaryChromaticity> PrimaryChromaticityPtr;
 bool CopyChromaticity(const PrimaryChromaticity* src,
                       PrimaryChromaticityPtr* dst) {
   if (!dst)
@@ -1057,22 +1054,22 @@ bool MasteringMetadata::Write(IMkvWriter* writer) const {
 bool MasteringMetadata::SetChromaticity(
     const PrimaryChromaticity* r, const PrimaryChromaticity* g,
     const PrimaryChromaticity* b, const PrimaryChromaticity* white_point) {
-  PrimaryChromaticityPtr r_ptr(NULL);
+  PrimaryChromaticityPtr r_ptr(nullptr);
   if (r) {
     if (!CopyChromaticity(r, &r_ptr))
       return false;
   }
-  PrimaryChromaticityPtr g_ptr(NULL);
+  PrimaryChromaticityPtr g_ptr(nullptr);
   if (g) {
     if (!CopyChromaticity(g, &g_ptr))
       return false;
   }
-  PrimaryChromaticityPtr b_ptr(NULL);
+  PrimaryChromaticityPtr b_ptr(nullptr);
   if (b) {
     if (!CopyChromaticity(b, &b_ptr))
       return false;
   }
-  PrimaryChromaticityPtr wp_ptr(NULL);
+  PrimaryChromaticityPtr wp_ptr(nullptr);
   if (white_point) {
     if (!CopyChromaticity(white_point, &wp_ptr))
       return false;
@@ -1238,7 +1235,7 @@ bool Colour::Write(IMkvWriter* writer) const {
 }
 
 bool Colour::SetMasteringMetadata(const MasteringMetadata& mastering_metadata) {
-  std::auto_ptr<MasteringMetadata> mm_ptr(new MasteringMetadata());
+  std::unique_ptr<MasteringMetadata> mm_ptr(new MasteringMetadata());
   if (!mm_ptr.get())
     return false;
 
@@ -1546,7 +1543,7 @@ bool VideoTrack::Write(IMkvWriter* writer) const {
 }
 
 bool VideoTrack::SetColour(const Colour& colour) {
-  std::auto_ptr<Colour> colour_ptr(new Colour());
+  std::unique_ptr<Colour> colour_ptr(new Colour());
   if (!colour_ptr.get())
     return false;
 
@@ -1574,7 +1571,7 @@ bool VideoTrack::SetColour(const Colour& colour) {
 }
 
 bool VideoTrack::SetProjection(const Projection& projection) {
-  std::auto_ptr<Projection> projection_ptr(new Projection());
+  std::unique_ptr<Projection> projection_ptr(new Projection());
   if (!projection_ptr.get())
     return false;
 
@@ -2666,7 +2663,7 @@ bool Cluster::QueueOrWriteFrame(const Frame* const frame) {
   // and write it if it is okay to do so (i.e.) no other track has an held back
   // frame with timestamp <= the timestamp of the frame in question.
   std::vector<std::list<Frame*>::iterator> frames_to_erase;
-  for (std::list<Frame *>::iterator
+  for (std::list<Frame*>::iterator
            current_track_iterator = stored_frames_[track_number].begin(),
            end = --stored_frames_[track_number].end();
        current_track_iterator != end; ++current_track_iterator) {
diff --git a/third_party/libwebm/mkvparser/mkvparser.cc b/third_party/libwebm/mkvparser/mkvparser.cc
index 37f230d0a..e7b76f7da 100644
--- a/third_party/libwebm/mkvparser/mkvparser.cc
+++ b/third_party/libwebm/mkvparser/mkvparser.cc
@@ -22,12 +22,8 @@
 
 #include "common/webmids.h"
 
-// disable deprecation warnings for auto_ptr
-#if defined(__GNUC__) && __GNUC__ >= 5
-#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
-#endif
-
 namespace mkvparser {
+const long long kStringElementSizeLimit = 20 * 1000 * 1000;
 const float MasteringMetadata::kValueNotPresent = FLT_MAX;
 const long long Colour::kValueNotPresent = LLONG_MAX;
 const float Projection::kValueNotPresent = FLT_MAX;
@@ -330,7 +326,7 @@ long UnserializeString(IMkvReader* pReader, long long pos, long long size,
   delete[] str;
   str = NULL;
 
-  if (size >= LONG_MAX || size < 0)
+  if (size >= LONG_MAX || size < 0 || size > kStringElementSizeLimit)
     return E_FILE_FORMAT_INVALID;
 
   // +1 for '\0' terminator
@@ -5015,7 +5011,7 @@ bool MasteringMetadata::Parse(IMkvReader* reader, long long mm_start,
   if (!reader || *mm)
     return false;
 
-  std::auto_ptr<MasteringMetadata> mm_ptr(new MasteringMetadata());
+  std::unique_ptr<MasteringMetadata> mm_ptr(new MasteringMetadata());
   if (!mm_ptr.get())
     return false;
 
@@ -5035,6 +5031,10 @@ bool MasteringMetadata::Parse(IMkvReader* reader, long long mm_start,
       double value = 0;
       const long long value_parse_status =
           UnserializeFloat(reader, read_pos, child_size, value);
+      if (value < -FLT_MAX || value > FLT_MAX ||
+          (value > 0.0 && value < FLT_MIN)) {
+        return false;
+      }
       mm_ptr->luminance_max = static_cast<float>(value);
       if (value_parse_status < 0 || mm_ptr->luminance_max < 0.0 ||
           mm_ptr->luminance_max > 9999.99) {
@@ -5044,6 +5044,10 @@ bool MasteringMetadata::Parse(IMkvReader* reader, long long mm_start,
       double value = 0;
       const long long value_parse_status =
           UnserializeFloat(reader, read_pos, child_size, value);
+      if (value < -FLT_MAX || value > FLT_MAX ||
+          (value > 0.0 && value < FLT_MIN)) {
+        return false;
+      }
       mm_ptr->luminance_min = static_cast<float>(value);
       if (value_parse_status < 0 || mm_ptr->luminance_min < 0.0 ||
           mm_ptr->luminance_min > 999.9999) {
@@ -5096,7 +5100,7 @@ bool Colour::Parse(IMkvReader* reader, long long colour_start,
   if (!reader || *colour)
     return false;
 
-  std::auto_ptr<Colour> colour_ptr(new Colour());
+  std::unique_ptr<Colour> colour_ptr(new Colour());
   if (!colour_ptr.get())
     return false;
 
@@ -5194,7 +5198,7 @@ bool Projection::Parse(IMkvReader* reader, long long start, long long size,
   if (!reader || *projection)
     return false;
 
-  std::auto_ptr<Projection> projection_ptr(new Projection());
+  std::unique_ptr<Projection> projection_ptr(new Projection());
   if (!projection_ptr.get())
     return false;
 
@@ -7903,6 +7907,10 @@ long Block::Parse(const Cluster* pCluster) {
         return E_FILE_FORMAT_INVALID;
 
       curr.len = static_cast<long>(frame_size);
+      // Check if size + curr.len could overflow.
+      if (size > LLONG_MAX - curr.len) {
+        return E_FILE_FORMAT_INVALID;
+      }
       size += curr.len;  // contribution of this frame
 
       --frame_count;
@@ -7964,6 +7972,11 @@ long long Block::GetTimeCode(const Cluster* pCluster) const {
   const long long tc0 = pCluster->GetTimeCode();
   assert(tc0 >= 0);
 
+  // Check if tc0 + m_timecode would overflow.
+  if (tc0 < 0 || LLONG_MAX - tc0 < m_timecode) {
+    return -1;
+  }
+
   const long long tc = tc0 + m_timecode;
 
   return tc;  // unscaled timecode units
@@ -7981,6 +7994,10 @@ long long Block::GetTime(const Cluster* pCluster) const {
   const long long scale = pInfo->GetTimeCodeScale();
   assert(scale >= 1);
 
+  // Check if tc * scale could overflow.
+  if (tc != 0 && scale > LLONG_MAX / tc) {
+    return -1;
+  }
   const long long ns = tc * scale;
 
   return ns;