Fix x64 build on Windows.

- Fix integer conversion warnings.
- Fix #168.

Change-Id: Ie9aadea86a293b49e0854d6549800083143c79df

packager/media/base/bit_reader.cc

@@ -9,7 +9,7 @@
 namespace shaka {
 namespace media {
 
-BitReader::BitReader(const uint8_t* data, off_t size)
+BitReader::BitReader(const uint8_t* data, size_t size)
     : data_(data),
       initial_size_(size),
       bytes_left_(size),
@@ -21,16 +21,14 @@ BitReader::BitReader(const uint8_t* data, off_t size)
 
 BitReader::~BitReader() {}
 
-bool BitReader::SkipBits(int num_bits) {
+bool BitReader::SkipBits(size_t num_bits) {
-  DCHECK_GE(num_bits, 0);
-
   // Skip any bits in the current byte waiting to be processed, then
   // process full bytes until less than 8 bits remaining.
   if (num_bits > num_remaining_bits_in_curr_byte_) {
     num_bits -= num_remaining_bits_in_curr_byte_;
     num_remaining_bits_in_curr_byte_ = 0;
 
-    int num_bytes = num_bits / 8;
+    size_t num_bytes = num_bits / 8;
     num_bits %= 8;
     if (bytes_left_ < num_bytes) {
       bytes_left_ = 0;
@@ -53,7 +51,7 @@ bool BitReader::SkipBits(int num_bits) {
   return ReadBitsInternal(num_bits, &not_needed);
 }
 
-bool BitReader::SkipBytes(int num_bytes) {
+bool BitReader::SkipBytes(size_t num_bytes) {
   if (num_remaining_bits_in_curr_byte_ != 8)
     return false;
   if (num_bytes == 0)
@@ -68,13 +66,13 @@ bool BitReader::SkipBytes(int num_bytes) {
   return true;
 }
 
-bool BitReader::ReadBitsInternal(int num_bits, uint64_t* out) {
+bool BitReader::ReadBitsInternal(size_t num_bits, uint64_t* out) {
-  DCHECK_LE(num_bits, 64);
+  DCHECK_LE(num_bits, 64u);
 
   *out = 0;
 
   while (num_remaining_bits_in_curr_byte_ != 0 && num_bits != 0) {
-    int bits_to_take = std::min(num_remaining_bits_in_curr_byte_, num_bits);
+    size_t bits_to_take = std::min(num_remaining_bits_in_curr_byte_, num_bits);
 
     *out <<= bits_to_take;
     *out += curr_byte_ >> (num_remaining_bits_in_curr_byte_ - bits_to_take);
@@ -90,7 +88,7 @@ bool BitReader::ReadBitsInternal(int num_bits, uint64_t* out) {
 }
 
 void BitReader::UpdateCurrByte() {
-  DCHECK_EQ(num_remaining_bits_in_curr_byte_, 0);
+  DCHECK_EQ(num_remaining_bits_in_curr_byte_, 0u);
 
   if (bytes_left_ == 0)
     return;

packager/media/base/bit_reader.h

@@ -19,7 +19,7 @@ class BitReader {
   /// Initialize the BitReader object to read a data buffer.
   /// @param data points to the beginning of the buffer.
   /// @param size is the buffer size in bytes.
-  BitReader(const uint8_t* data, off_t size);
+  BitReader(const uint8_t* data, size_t size);
   ~BitReader();
 
   /// Read a number of bits from stream.
@@ -32,8 +32,8 @@ class BitReader {
   ///         stream will enter a state where further ReadBits/SkipBits
   ///         operations will always return false unless @a num_bits is 0.
   template <typename T>
-  bool ReadBits(int num_bits, T* out) {
+  bool ReadBits(size_t num_bits, T* out) {
-    DCHECK_LE(num_bits, static_cast<int>(sizeof(T) * 8));
+    DCHECK_LE(num_bits, sizeof(T) * 8);
     uint64_t temp;
     bool ret = ReadBitsInternal(num_bits, &temp);
     *out = static_cast<T>(temp);
@@ -41,8 +41,8 @@ class BitReader {
   }
 
   // Explicit T=bool overload to make MSVC happy.
-  bool ReadBits(int num_bits, bool* out) {
+  bool ReadBits(size_t num_bits, bool* out) {
-    DCHECK_EQ(num_bits, 1);
+    DCHECK_EQ(num_bits, 1u);
     uint64_t temp;
     bool ret = ReadBitsInternal(num_bits, &temp);
     *out = temp != 0;
@@ -55,7 +55,7 @@ class BitReader {
   ///         bits in the stream), true otherwise. When false is returned, the
   ///         stream will enter a state where further ReadXXX/SkipXXX
   ///         operations will always return false unless |num_bits/bytes| is 0.
-  bool SkipBits(int num_bits);
+  bool SkipBits(size_t num_bits);
 
   /// Read one bit then skip the number of bits specified if that bit matches @a
   /// condition.
@@ -66,7 +66,7 @@ class BitReader {
   ///         be skipped (not enough bits in the stream), true otherwise. When
   ///         false is returned, the stream will enter a state where further
   ///         ReadXXX/SkipXXX operations will always return false.
-  bool SkipBitsConditional(bool condition, int num_bits) {
+  bool SkipBitsConditional(bool condition, size_t num_bits) {
     bool condition_read = true;
     if (!ReadBits(1, &condition_read))
       return false;
@@ -79,19 +79,19 @@ class BitReader {
   /// @return false if the current position is not byte aligned or if the given
   ///         number of bytes cannot be skipped (not enough bytes in the
   ///         stream), true otherwise.
-  bool SkipBytes(int num_bytes);
+  bool SkipBytes(size_t num_bytes);
 
   /// @return The number of bits available for reading.
-  int bits_available() const {
+  size_t bits_available() const {
     return 8 * bytes_left_ + num_remaining_bits_in_curr_byte_;
   }
 
   /// @return The current bit position.
-  int bit_position() const { return 8 * initial_size_ - bits_available(); }
+  size_t bit_position() const { return 8 * initial_size_ - bits_available(); }
 
  private:
   // Help function used by ReadBits to avoid inlining the bit reading logic.
-  bool ReadBitsInternal(int num_bits, uint64_t* out);
+  bool ReadBitsInternal(size_t num_bits, uint64_t* out);
 
   // Advance to the next byte, loading it into curr_byte_.
   // If the num_remaining_bits_in_curr_byte_ is 0 after this function returns,
@@ -102,18 +102,17 @@ class BitReader {
   const uint8_t* data_;
 
   // Initial size of the input data.
-  // TODO(kqyang): Use size_t instead of off_t instead.
+  size_t initial_size_;
-  off_t initial_size_;
 
   // Bytes left in the stream (without the curr_byte_).
-  off_t bytes_left_;
+  size_t bytes_left_;
 
   // Contents of the current byte; first unread bit starting at position
   // 8 - num_remaining_bits_in_curr_byte_ from MSB.
   uint8_t curr_byte_;
 
   // Number of bits remaining in curr_byte_
-  int num_remaining_bits_in_curr_byte_;
+  size_t num_remaining_bits_in_curr_byte_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(BitReader);

packager/media/base/bit_reader_unittest.cc

@@ -20,8 +20,8 @@ TEST(BitReaderTest, NormalOperationTest) {
   EXPECT_EQ(0, value8);
   EXPECT_TRUE(reader1.ReadBits(8, &value8));
   EXPECT_EQ(0xab, value8);  // 1010 1011
-  EXPECT_EQ(39, reader1.bits_available());
+  EXPECT_EQ(39u, reader1.bits_available());
-  EXPECT_EQ(9, reader1.bit_position());
+  EXPECT_EQ(9u, reader1.bit_position());
   EXPECT_TRUE(reader1.ReadBits(7, &value64));
   EXPECT_TRUE(reader1.ReadBits(32, &value64));
   EXPECT_EQ(0x55995599u, value64);
@@ -64,8 +64,8 @@ TEST(BitReaderTest, SkipBitsTest) {
   EXPECT_TRUE(reader1.SkipBytes(0));
   EXPECT_TRUE(reader1.SkipBytes(1));
   EXPECT_TRUE(reader1.SkipBits(52));
-  EXPECT_EQ(20, reader1.bits_available());
+  EXPECT_EQ(20u, reader1.bits_available());
-  EXPECT_EQ(100, reader1.bit_position());
+  EXPECT_EQ(100u, reader1.bit_position());
   EXPECT_TRUE(reader1.ReadBits(4, &value8));
   EXPECT_EQ(13, value8);
   EXPECT_FALSE(reader1.SkipBits(100));
@@ -77,13 +77,13 @@ TEST(BitReaderTest, SkipBitsConditionalTest) {
   uint8_t buffer[] = {0x8a, 0x12};
   BitReader reader(buffer, sizeof(buffer));
   EXPECT_TRUE(reader.SkipBitsConditional(false, 2));
-  EXPECT_EQ(1, reader.bit_position());  // Not skipped.
+  EXPECT_EQ(1u, reader.bit_position());  // Not skipped.
   EXPECT_TRUE(reader.SkipBitsConditional(false, 3));
-  EXPECT_EQ(5, reader.bit_position());  // Skipped.
+  EXPECT_EQ(5u, reader.bit_position());  // Skipped.
   EXPECT_TRUE(reader.SkipBitsConditional(true, 2));
-  EXPECT_EQ(6, reader.bit_position());  // Not skipped.
+  EXPECT_EQ(6u, reader.bit_position());  // Not skipped.
   EXPECT_TRUE(reader.SkipBitsConditional(true, 5));
-  EXPECT_EQ(12, reader.bit_position());  // Skipped.
+  EXPECT_EQ(12u, reader.bit_position());  // Skipped.
   EXPECT_TRUE(reader.SkipBits(4));
   EXPECT_FALSE(reader.SkipBits(1));
 }

packager/media/base/container_names.cc

@@ -74,7 +74,7 @@ static bool StartsWith(const uint8_t* buffer,
 
 // Helper function to read up to 64 bits from a bit stream.
 static uint64_t ReadBits(BitReader* reader, int num_bits) {
-  DCHECK_GE(reader->bits_available(), num_bits);
+  DCHECK_GE(static_cast<int>(reader->bits_available()), num_bits);
   DCHECK((num_bits > 0) && (num_bits <= 64));
   uint64_t value;
   reader->ReadBits(num_bits, &value);
@@ -1223,7 +1223,7 @@ static int GetElementId(BitReader* reader) {
     for (int i = 0; i < 4; ++i) {
       num_bits_to_read += 7;
       if (ReadBits(reader, 1) == 1) {
-        if (reader->bits_available() < num_bits_to_read)
+        if (static_cast<int>(reader->bits_available()) < num_bits_to_read)
           break;
         // prefix[] adds back the bits read individually.
         return ReadBits(reader, num_bits_to_read) | prefix[i];
@@ -1244,7 +1244,7 @@ static uint64_t GetVint(BitReader* reader) {
     for (int i = 0; i < 8; ++i) {
       num_bits_to_read += 7;
       if (ReadBits(reader, 1) == 1) {
-        if (reader->bits_available() < num_bits_to_read)
+        if (static_cast<int>(reader->bits_available()) < num_bits_to_read)
           break;
         return ReadBits(reader, num_bits_to_read);
       }
@@ -1268,7 +1268,7 @@ static bool CheckWebm(const uint8_t* buffer, int buffer_size) {
 
   // Get the header size, and ensure there are enough bits to check.
   int header_size = GetVint(&reader);
-  RCHECK(reader.bits_available() / 8 >= header_size);
+  RCHECK(static_cast<int>(reader.bits_available()) / 8 >= header_size);
 
   // Loop through the header.
   while (reader.bits_available() > 0) {

packager/media/base/container_names_unittest.cc

@@ -190,8 +190,9 @@ TEST(ContainerNamesTest, WebVtt) {
       kWebVtt + arraysize(kWebVtt));
 
   EXPECT_EQ(CONTAINER_WEBVTT,
-            DetermineContainer(webvtt_with_utf8_byte_order_mark.data(),
+            DetermineContainer(
-                               webvtt_with_utf8_byte_order_mark.size()));
+                webvtt_with_utf8_byte_order_mark.data(),
+                static_cast<int>(webvtt_with_utf8_byte_order_mark.size())));
 }
 
 TEST(ContainerNamesTest, FileCheckOGG) {

packager/media/base/producer_consumer_queue_unittest.cc

@@ -89,7 +89,7 @@ TEST(ProducerConsumerQueueTest, PeekOnPoppedElement) {
 
 TEST(ProducerConsumerQueueTest, PushWithTimeout) {
   std::unique_ptr<base::ElapsedTimer> timer;
-  ProducerConsumerQueue<int> queue(kCapacity);
+  ProducerConsumerQueue<size_t> queue(kCapacity);
 
   for (size_t i = 0; i < kCapacity; ++i) {
     timer.reset(new base::ElapsedTimer());

packager/media/codecs/h264_parser.h

@@ -169,13 +169,13 @@ struct H264SliceHeader {
   const uint8_t* nalu_data;
 
   // Size of whole nalu unit.
-  off_t nalu_size;
+  size_t nalu_size;
 
   // This is the size of the slice header not including the nalu header byte.
   // Sturcture: |NALU Header|     Slice Header    |    Slice Data    |
   // Size:      |<- 8bits ->|<- header_bit_size ->|<- Rest of nalu ->|
   // Note that this is not a field in the H.264 spec.
-  off_t header_bit_size;
+  size_t header_bit_size;
 
   int first_mb_in_slice;
   int slice_type;

packager/media/codecs/h265_parser.h

@@ -222,7 +222,7 @@ struct H265SliceHeader {
   // Sturcture: |NALU Header |     Slice Header    |    Slice Data    |
   // Size:      |<- 16bits ->|<- header_bit_size ->|<- Rest of nalu ->|
   // Note that this is not a field in the H.265 spec.
-  int header_bit_size = 0;
+  size_t header_bit_size = 0;
 
   bool first_slice_segment_in_pic_flag = false;
   bool no_output_of_prior_pics_flag = false;

packager/media/codecs/h265_parser_unittest.cc

@@ -55,7 +55,7 @@ TEST(H265ParserTest, ParseSliceHeader) {
   EXPECT_EQ(8, header.slice_qp_delta);
   EXPECT_FALSE(header.cu_chroma_qp_offset_enabled_flag);
   EXPECT_EQ(5, header.num_entry_point_offsets);
-  EXPECT_EQ(85, header.header_bit_size);
+  EXPECT_EQ(85u, header.header_bit_size);
 }
 
 TEST(H265ParserTest, ParseSliceHeader_NonIDR) {
@@ -81,7 +81,7 @@ TEST(H265ParserTest, ParseSliceHeader_NonIDR) {
   EXPECT_FALSE(header.dependent_slice_segment_flag);
   EXPECT_EQ(1, header.slice_type);
   EXPECT_EQ(5, header.num_entry_point_offsets);
-  EXPECT_EQ(124, header.header_bit_size);
+  EXPECT_EQ(124u, header.header_bit_size);
 }
 
 TEST(H265ParserTest, ParseSps) {

packager/media/codecs/nal_unit_to_byte_stream_converter.cc

@@ -195,7 +195,7 @@ bool NalUnitToByteStreamConverter::ConvertUnitToByteStreamWithSubsamples(
   if (is_key_frame)
     buffer_writer.AppendVector(decoder_configuration_in_byte_stream_);
 
-  int adjustment = buffer_writer.Size();
+  int adjustment = static_cast<int>(buffer_writer.Size());
   size_t subsample_id = 0;
 
   NaluReader nalu_reader(Nalu::kH264, nalu_length_size_, sample, sample_size);
@@ -245,7 +245,7 @@ bool NalUnitToByteStreamConverter::ConvertUnitToByteStreamWithSubsamples(
             DCHECK_LT(old_nalu_size, subsamples->at(subsample_id).clear_bytes);
             subsamples->at(subsample_id).clear_bytes -=
                 static_cast<uint16_t>(old_nalu_size);
-            adjustment += old_nalu_size;
+            adjustment += static_cast<int>(old_nalu_size);
           } else {
             // Apply the adjustment on the current subsample, reset the
             // adjustment and move to the next subsample.

packager/media/codecs/video_slice_header_parser.cc

@@ -15,10 +15,9 @@ namespace media {
 
 namespace {
 
-int NumBitsToNumBytes(int size_in_bits) {
+size_t NumBitsToNumBytes(size_t size_in_bits) {
   // Round-up division.
-  DCHECK_GE(size_in_bits, 0);
+  return (size_in_bits + 7) >> 3;
-  return (size_in_bits - 1) / 8 + 1;
 }
 
 }  // namespace

packager/media/formats/mp2t/es_parser_adts.cc

@@ -63,8 +63,8 @@ static bool LookForSyncWord(const uint8_t* raw_es,
       // The layer field (2 bits) must be set to 0.
       continue;
 
-    int frame_size =
+    int frame_size = static_cast<int>(
-        mp2t::AdtsHeader::GetAdtsFrameSize(cur_buf, kAdtsHeaderMinSize);
+        mp2t::AdtsHeader::GetAdtsFrameSize(cur_buf, kAdtsHeaderMinSize));
     if (frame_size < kAdtsHeaderMinSize) {
       // Too short to be an ADTS frame.
       continue;
@@ -117,7 +117,7 @@ bool EsParserAdts::Parse(const uint8_t* buf,
   }
 
   // Copy the input data to the ES buffer.
-  es_byte_queue_.Push(buf, size);
+  es_byte_queue_.Push(buf, static_cast<int>(size));
   es_byte_queue_.Peek(&raw_es, &raw_es_size);
 
   // Look for every ADTS frame in the ES buffer starting at offset = 0

packager/media/formats/mp2t/es_parser_h264_unittest.cc

@@ -193,8 +193,8 @@ void EsParserH264Test::ProcessPesPackets(
       pts = au_idx * kMpegTicksPerFrame;
     }
 
-    ASSERT_TRUE(
+    ASSERT_TRUE(es_parser.Parse(&stream_[cur_pes_offset],
-        es_parser.Parse(&stream_[cur_pes_offset], cur_pes_size, pts, dts));
+                                static_cast<int>(cur_pes_size), pts, dts));
   }
   es_parser.Flush();
 }

packager/media/formats/mp2t/es_parser_h26x_unittest.cc

@@ -129,7 +129,7 @@ class TestableEsParser : public EsParserH26x {
 
 std::vector<uint8_t> CreateNalu(Nalu::CodecType codec_type,
                                 H26xNaluType type,
-                                int i) {
+                                uint8_t i) {
   std::vector<uint8_t> ret;
   if (codec_type == Nalu::kH264) {
     ret.resize(3);
@@ -215,7 +215,8 @@ void EsParserH26xTest::RunTest(Nalu::CodecType codec_type,
           seen_key_frame = true;
       }
 
-      std::vector<uint8_t> es_data = CreateNalu(codec_type, types[k], k);
+      std::vector<uint8_t> es_data =
+          CreateNalu(codec_type, types[k], static_cast<uint8_t>(k));
       cur_sample_data.push_back(0);
       cur_sample_data.push_back(0);
       cur_sample_data.push_back(0);
@@ -235,7 +236,8 @@ void EsParserH26xTest::RunTest(Nalu::CodecType codec_type,
       while (offset < es_data.size()) {
         // Insert the data in parts to test partial data searches.
         size = std::min(size + 1, es_data.size() - offset);
-        ASSERT_TRUE(es_parser.Parse(&es_data[offset], size, pts, dts));
+        ASSERT_TRUE(es_parser.Parse(&es_data[offset], static_cast<int>(size),
+                                    pts, dts));
         offset += size;
       }
     }

packager/media/formats/mp2t/mp2t_media_parser_unittest.cc

@@ -44,7 +44,7 @@ class Mp2tMediaParserTest : public testing::Test {
   int64_t video_max_dts_;
 
   bool AppendData(const uint8_t* data, size_t length) {
-    return parser_->Parse(data, length);
+    return parser_->Parse(data, static_cast<int>(length));
   }
 
   bool AppendDataInPieces(const uint8_t* data,

packager/media/formats/mp2t/program_map_table_writer.cc

@@ -179,7 +179,7 @@ const uint8_t kPrivateDataIndicatorDescriptorEncryptedH264[] = {
 };
 
 void WritePmtToBuffer(const uint8_t* pmt,
-                      int pmt_size,
+                      size_t pmt_size,
                       ContinuityCounter* continuity_counter,
                       BufferWriter* writer) {
   const bool kPayloadUnitStartIndicator = true;

packager/media/formats/mp2t/ts_packet.cc

@@ -138,7 +138,8 @@ bool TsPacket::ParseHeader(const uint8_t* buf) {
 bool TsPacket::ParseAdaptationField(BitReader* bit_reader,
                                     int adaptation_field_length) {
   DCHECK_GT(adaptation_field_length, 0);
-  int adaptation_field_start_marker = bit_reader->bits_available() / 8;
+  int adaptation_field_start_marker =
+      static_cast<int>(bit_reader->bits_available()) / 8;
 
   int discontinuity_indicator;
   int random_access_indicator;
@@ -196,8 +197,10 @@ bool TsPacket::ParseAdaptationField(BitReader* bit_reader,
   }
 
   // The rest of the adaptation field should be stuffing bytes.
-  int adaptation_field_remaining_size = adaptation_field_length -
+  int adaptation_field_remaining_size =
-      (adaptation_field_start_marker - bit_reader->bits_available() / 8);
+      adaptation_field_length -
+      (adaptation_field_start_marker -
+       static_cast<int>(bit_reader->bits_available()) / 8);
   RCHECK(adaptation_field_remaining_size >= 0);
   for (int k = 0; k < adaptation_field_remaining_size; k++) {
     int stuffing_byte;

packager/media/formats/mp2t/ts_packet_writer_util.cc

@@ -74,19 +74,19 @@ void WriteAdaptationField(bool has_pcr,
 
   // The size of all leading flags (not including the adaptation_field_length).
   const int kAdaptationFieldHeaderSize = 1;
-  int adaptation_field_length =
+  size_t adaptation_field_length =
       kAdaptationFieldHeaderSize + (has_pcr ? kPcrFieldsSize : 0);
   if (remaining_data_size < kTsPacketMaximumPayloadSize) {
-    const int current_ts_size = kTsPacketHeaderSize + remaining_data_size +
+    const size_t current_ts_size = kTsPacketHeaderSize + remaining_data_size +
-                                adaptation_field_length +
+                                   adaptation_field_length +
-                                kAdaptationFieldLengthSize;
+                                   kAdaptationFieldLengthSize;
     if (current_ts_size < kTsPacketSize) {
       adaptation_field_length += kTsPacketSize - current_ts_size;
     }
   }
 
   writer->AppendInt(static_cast<uint8_t>(adaptation_field_length));
-  int remaining_bytes = adaptation_field_length;
+  int remaining_bytes = static_cast<int>(adaptation_field_length);
   writer->AppendInt(static_cast<uint8_t>(
       // All flags except PCR_flag are 0.
       static_cast<uint8_t>(has_pcr) << 4));
@@ -144,7 +144,7 @@ void WritePayloadToBufferWriter(const uint8_t* payload,
       WriteAdaptationField(has_pcr, pcr_base, bytes_left, writer);
       const size_t bytes_for_adaptation_field = writer->Size() - before;
 
-      const int write_bytes =
+      const size_t write_bytes =
           kTsPacketMaximumPayloadSize - bytes_for_adaptation_field;
       writer->AppendArray(payload + payload_bytes_written, write_bytes);
       payload_bytes_written += write_bytes;

packager/media/formats/mp2t/ts_section_pes.cc

@@ -195,7 +195,7 @@ bool TsSectionPes::ParseInternal(const uint8_t* raw_pes, int raw_pes_size) {
   RCHECK(packet_start_code_prefix == kPesStartCode);
   DVLOG(LOG_LEVEL_PES) << "stream_id=" << std::hex << stream_id << std::dec;
   if (pes_packet_length == 0)
-    pes_packet_length = bit_reader.bits_available() / 8;
+    pes_packet_length = static_cast<int>(bit_reader.bits_available()) / 8;
 
   // Ignore the PES for unknown stream IDs.
   // See ITU H.222 Table 2-22 "Stream_id assignments"
@@ -234,7 +234,7 @@ bool TsSectionPes::ParseInternal(const uint8_t* raw_pes, int raw_pes_size) {
   RCHECK(bit_reader.ReadBits(1, &pes_crc_flag));
   RCHECK(bit_reader.ReadBits(1, &pes_extension_flag));
   RCHECK(bit_reader.ReadBits(8, &pes_header_data_length));
-  int pes_header_start_size = bit_reader.bits_available() / 8;
+  int pes_header_start_size = static_cast<int>(bit_reader.bits_available()) / 8;
 
   // Compute the size and the offset of the ES payload.
   // "6" for the 6 bytes read before and including |pes_packet_length|.
@@ -287,9 +287,11 @@ bool TsSectionPes::ParseInternal(const uint8_t* raw_pes, int raw_pes_size) {
   }
 
   // Discard the rest of the PES packet header.
-  DCHECK_EQ(bit_reader.bits_available() % 8, 0);
+  DCHECK_EQ(bit_reader.bits_available() % 8, 0u);
-  int pes_header_remaining_size = pes_header_data_length -
+  int pes_header_remaining_size =
-      (pes_header_start_size - bit_reader.bits_available() / 8);
+      pes_header_data_length -
+      (pes_header_start_size -
+       static_cast<int>(bit_reader.bits_available()) / 8);
   RCHECK(pes_header_remaining_size >= 0);
 
   // Read the PES packet.

packager/media/formats/mp2t/ts_section_pmt.cc

@@ -38,7 +38,7 @@ bool TsSectionPmt::ParsePsiSection(BitReader* bit_reader) {
   RCHECK(bit_reader->ReadBits(1, &dummy_zero));
   RCHECK(bit_reader->ReadBits(2, &reserved));
   RCHECK(bit_reader->ReadBits(12, &section_length));
-  int section_start_marker = bit_reader->bits_available() / 8;
+  int section_start_marker = static_cast<int>(bit_reader->bits_available()) / 8;
 
   RCHECK(bit_reader->ReadBits(16, &program_number));
   RCHECK(bit_reader->ReadBits(2, &reserved));
@@ -76,7 +76,8 @@ bool TsSectionPmt::ParsePsiSection(BitReader* bit_reader) {
   // (4 bytes = size of the CRC).
   int pid_map_end_marker = section_start_marker - section_length + 4;
   std::map<int, int> pid_map;
-  while (bit_reader->bits_available() > 8 * pid_map_end_marker) {
+  while (static_cast<int>(bit_reader->bits_available()) >
+         8 * pid_map_end_marker) {
     int stream_type;
     int reserved;
     int pid_es;

packager/media/formats/mp2t/ts_writer.cc

@@ -135,10 +135,9 @@ bool WritePesToFile(const PesPacket& pes,
       pes_packet_length > kMaxPesPacketLengthValue ? 0 : pes_packet_length));
   first_ts_packet_buffer.AppendBuffer(pes_header_writer);
 
-  const int available_payload =
+  const size_t available_payload =
       kTsPacketMaxPayloadWithPcr - first_ts_packet_buffer.Size();
-  const int bytes_consumed =
+  const size_t bytes_consumed = std::min(pes.data().size(), available_payload);
-      std::min(static_cast<int>(pes.data().size()), available_payload);
   first_ts_packet_buffer.AppendArray(pes.data().data(), bytes_consumed);
 
   BufferWriter output_writer;

packager/media/formats/mp4/box.cc

@@ -48,7 +48,7 @@ void Box::WriteHeader(BufferWriter* writer) {
 }
 
 uint32_t Box::ComputeSize() {
-  box_size_ = ComputeSizeInternal();
+  box_size_ = static_cast<uint32_t>(ComputeSizeInternal());
   return box_size_;
 }
 

packager/media/formats/mp4/box.h

@@ -67,7 +67,7 @@ struct Box {
   virtual bool ReadWriteInternal(BoxBuffer* buffer) = 0;
   // Compute the size of this box. A value of 0 should be returned if the box
   // should not be written. Note that this function won't update box size.
-  virtual uint32_t ComputeSizeInternal() = 0;
+  virtual size_t ComputeSizeInternal() = 0;
 
   // We don't support 64-bit box sizes. 32-bit should be large enough for our
   // current needs.

packager/media/formats/mp4/box_definitions.cc

@@ -154,7 +154,7 @@ bool FileType::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t FileType::ComputeSizeInternal() {
+size_t FileType::ComputeSizeInternal() {
   return HeaderSize() + kFourCCSize + sizeof(minor_version) +
          kFourCCSize * compatible_brands.size();
 }
@@ -178,7 +178,7 @@ bool ProtectionSystemSpecificHeader::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t ProtectionSystemSpecificHeader::ComputeSizeInternal() {
+size_t ProtectionSystemSpecificHeader::ComputeSizeInternal() {
   return raw_box.size();
 }
 
@@ -191,7 +191,7 @@ bool SampleAuxiliaryInformationOffset::ReadWriteInternal(BoxBuffer* buffer) {
   if (flags & 1)
     RCHECK(buffer->IgnoreBytes(8));  // aux_info_type and parameter.
 
-  uint32_t count = offsets.size();
+  uint32_t count = static_cast<uint32_t>(offsets.size());
   RCHECK(buffer->ReadWriteUInt32(&count));
   offsets.resize(count);
 
@@ -201,7 +201,7 @@ bool SampleAuxiliaryInformationOffset::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t SampleAuxiliaryInformationOffset::ComputeSizeInternal() {
+size_t SampleAuxiliaryInformationOffset::ComputeSizeInternal() {
   // This box is optional. Skip it if it is empty.
   if (offsets.size() == 0)
     return 0;
@@ -226,7 +226,7 @@ bool SampleAuxiliaryInformationSize::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t SampleAuxiliaryInformationSize::ComputeSizeInternal() {
+size_t SampleAuxiliaryInformationSize::ComputeSizeInternal() {
   // This box is optional. Skip it if it is empty.
   if (sample_count == 0)
     return 0;
@@ -290,10 +290,11 @@ bool SampleEncryptionEntry::ParseFromBuffer(uint8_t iv_size,
 uint32_t SampleEncryptionEntry::ComputeSize() const {
   const uint32_t subsample_entry_size = sizeof(uint16_t) + sizeof(uint32_t);
   const uint16_t subsample_count = static_cast<uint16_t>(subsamples.size());
-  return initialization_vector.size() +
+  return static_cast<uint32_t>(
-         (subsample_count > 0 ? (sizeof(subsample_count) +
+      initialization_vector.size() +
-                                 subsample_entry_size * subsample_count)
+      (subsample_count > 0
-                              : 0);
+           ? (sizeof(subsample_count) + subsample_entry_size * subsample_count)
+           : 0));
 }
 
 uint32_t SampleEncryptionEntry::GetTotalSizeOfSubsamples() const {
@@ -325,7 +326,8 @@ bool SampleEncryption::ReadWriteInternal(BoxBuffer* buffer) {
     return false;
   }
 
-  uint32_t sample_count = sample_encryption_entries.size();
+  uint32_t sample_count =
+      static_cast<uint32_t>(sample_encryption_entries.size());
   RCHECK(buffer->ReadWriteUInt32(&sample_count));
 
   sample_encryption_entries.resize(sample_count);
@@ -336,15 +338,16 @@ bool SampleEncryption::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t SampleEncryption::ComputeSizeInternal() {
+size_t SampleEncryption::ComputeSizeInternal() {
-  const uint32_t sample_count = sample_encryption_entries.size();
+  const uint32_t sample_count =
+      static_cast<uint32_t>(sample_encryption_entries.size());
   if (sample_count == 0) {
     // Sample encryption box is optional. Skip it if it is empty.
     return 0;
   }
 
   DCHECK(IsIvSizeValid(iv_size));
-  uint32_t box_size = HeaderSize() + sizeof(sample_count);
+  size_t box_size = HeaderSize() + sizeof(sample_count);
   if (flags & kUseSubsampleEncryption) {
     for (const SampleEncryptionEntry& sample_encryption_entry :
          sample_encryption_entries) {
@@ -382,7 +385,7 @@ bool OriginalFormat::ReadWriteInternal(BoxBuffer* buffer) {
   return ReadWriteHeaderInternal(buffer) && buffer->ReadWriteFourCC(&format);
 }
 
-uint32_t OriginalFormat::ComputeSizeInternal() {
+size_t OriginalFormat::ComputeSizeInternal() {
   return HeaderSize() + kFourCCSize;
 }
 
@@ -397,7 +400,7 @@ bool SchemeType::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t SchemeType::ComputeSizeInternal() {
+size_t SchemeType::ComputeSizeInternal() {
   return HeaderSize() + kFourCCSize + sizeof(version);
 }
 
@@ -460,7 +463,7 @@ bool TrackEncryption::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t TrackEncryption::ComputeSizeInternal() {
+size_t TrackEncryption::ComputeSizeInternal() {
   return HeaderSize() + sizeof(uint32_t) + kCencKeyIdSize +
          (default_constant_iv.empty() ? 0 : (sizeof(uint8_t) +
                                              default_constant_iv.size()));
@@ -476,7 +479,7 @@ bool SchemeInfo::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t SchemeInfo::ComputeSizeInternal() {
+size_t SchemeInfo::ComputeSizeInternal() {
   return HeaderSize() + track_encryption.ComputeSize();
 }
 
@@ -502,7 +505,7 @@ bool ProtectionSchemeInfo::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t ProtectionSchemeInfo::ComputeSizeInternal() {
+size_t ProtectionSchemeInfo::ComputeSizeInternal() {
   // Skip sinf box if it is not initialized.
   if (format.format == FOURCC_NULL)
     return 0;
@@ -541,7 +544,7 @@ bool MovieHeader::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t MovieHeader::ComputeSizeInternal() {
+size_t MovieHeader::ComputeSizeInternal() {
   version = IsFitIn32Bits(creation_time, modification_time, duration) ? 0 : 1;
   return HeaderSize() + sizeof(uint32_t) * (1 + version) * 3 +
          sizeof(timescale) + sizeof(rate) + sizeof(volume) +
@@ -592,7 +595,7 @@ bool TrackHeader::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t TrackHeader::ComputeSizeInternal() {
+size_t TrackHeader::ComputeSizeInternal() {
   version = IsFitIn32Bits(creation_time, modification_time, duration) ? 0 : 1;
   return HeaderSize() + sizeof(track_id) +
          sizeof(uint32_t) * (1 + version) * 3 + sizeof(layer) +
@@ -608,13 +611,13 @@ bool SampleDescription::ReadWriteInternal(BoxBuffer* buffer) {
   uint32_t count = 0;
   switch (type) {
     case kVideo:
-      count = video_entries.size();
+      count = static_cast<uint32_t>(video_entries.size());
       break;
     case kAudio:
-      count = audio_entries.size();
+      count = static_cast<uint32_t>(audio_entries.size());
       break;
     case kText:
-      count = text_entries.size();
+      count = static_cast<uint32_t>(text_entries.size());
       break;
     default:
       NOTIMPLEMENTED() << "SampleDecryption type " << type
@@ -658,8 +661,8 @@ bool SampleDescription::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t SampleDescription::ComputeSizeInternal() {
+size_t SampleDescription::ComputeSizeInternal() {
-  uint32_t box_size = HeaderSize() + sizeof(uint32_t);
+  size_t box_size = HeaderSize() + sizeof(uint32_t);
   if (type == kVideo) {
     for (uint32_t i = 0; i < video_entries.size(); ++i)
       box_size += video_entries[i].ComputeSize();
@@ -678,7 +681,7 @@ DecodingTimeToSample::~DecodingTimeToSample() {}
 FourCC DecodingTimeToSample::BoxType() const { return FOURCC_stts; }
 
 bool DecodingTimeToSample::ReadWriteInternal(BoxBuffer* buffer) {
-  uint32_t count = decoding_time.size();
+  uint32_t count = static_cast<uint32_t>(decoding_time.size());
   RCHECK(ReadWriteHeaderInternal(buffer) &&
          buffer->ReadWriteUInt32(&count));
 
@@ -690,7 +693,7 @@ bool DecodingTimeToSample::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t DecodingTimeToSample::ComputeSizeInternal() {
+size_t DecodingTimeToSample::ComputeSizeInternal() {
   return HeaderSize() + sizeof(uint32_t) +
          sizeof(DecodingTime) * decoding_time.size();
 }
@@ -700,7 +703,7 @@ CompositionTimeToSample::~CompositionTimeToSample() {}
 FourCC CompositionTimeToSample::BoxType() const { return FOURCC_ctts; }
 
 bool CompositionTimeToSample::ReadWriteInternal(BoxBuffer* buffer) {
-  uint32_t count = composition_offset.size();
+  uint32_t count = static_cast<uint32_t>(composition_offset.size());
   if (!buffer->Reading()) {
     // Determine whether version 0 or version 1 should be used.
     // Use version 0 if possible, use version 1 if there is a negative
@@ -734,14 +737,14 @@ bool CompositionTimeToSample::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t CompositionTimeToSample::ComputeSizeInternal() {
+size_t CompositionTimeToSample::ComputeSizeInternal() {
   // This box is optional. Skip it if it is empty.
   if (composition_offset.empty())
     return 0;
   // Structure CompositionOffset contains |sample_offset| (uint32_t) and
   // |sample_offset| (int64_t). The actual size of |sample_offset| is
   // 4 bytes (uint32_t for version 0 and int32_t for version 1).
-  const uint32_t kCompositionOffsetSize = sizeof(uint32_t) * 2;
+  const size_t kCompositionOffsetSize = sizeof(uint32_t) * 2;
   return HeaderSize() + sizeof(uint32_t) +
          kCompositionOffsetSize * composition_offset.size();
 }
@@ -751,7 +754,7 @@ SampleToChunk::~SampleToChunk() {}
 FourCC SampleToChunk::BoxType() const { return FOURCC_stsc; }
 
 bool SampleToChunk::ReadWriteInternal(BoxBuffer* buffer) {
-  uint32_t count = chunk_info.size();
+  uint32_t count = static_cast<uint32_t>(chunk_info.size());
   RCHECK(ReadWriteHeaderInternal(buffer) &&
          buffer->ReadWriteUInt32(&count));
 
@@ -767,7 +770,7 @@ bool SampleToChunk::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t SampleToChunk::ComputeSizeInternal() {
+size_t SampleToChunk::ComputeSizeInternal() {
   return HeaderSize() + sizeof(uint32_t) +
          sizeof(ChunkInfo) * chunk_info.size();
 }
@@ -792,7 +795,7 @@ bool SampleSize::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t SampleSize::ComputeSizeInternal() {
+size_t SampleSize::ComputeSizeInternal() {
   return HeaderSize() + sizeof(sample_size) + sizeof(sample_count) +
          (sample_size == 0 ? sizeof(uint32_t) * sizes.size() : 0);
 }
@@ -802,7 +805,7 @@ CompactSampleSize::~CompactSampleSize() {}
 FourCC CompactSampleSize::BoxType() const { return FOURCC_stz2; }
 
 bool CompactSampleSize::ReadWriteInternal(BoxBuffer* buffer) {
-  uint32_t sample_count = sizes.size();
+  uint32_t sample_count = static_cast<uint32_t>(sizes.size());
   RCHECK(ReadWriteHeaderInternal(buffer) &&
          buffer->IgnoreBytes(3) &&
          buffer->ReadWriteUInt8(&field_size) &&
@@ -847,7 +850,7 @@ bool CompactSampleSize::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t CompactSampleSize::ComputeSizeInternal() {
+size_t CompactSampleSize::ComputeSizeInternal() {
   return HeaderSize() + sizeof(uint32_t) + sizeof(uint32_t) +
          (field_size * sizes.size() + 7) / 8;
 }
@@ -857,7 +860,7 @@ ChunkOffset::~ChunkOffset() {}
 FourCC ChunkOffset::BoxType() const { return FOURCC_stco; }
 
 bool ChunkOffset::ReadWriteInternal(BoxBuffer* buffer) {
-  uint32_t count = offsets.size();
+  uint32_t count = static_cast<uint32_t>(offsets.size());
   RCHECK(ReadWriteHeaderInternal(buffer) &&
          buffer->ReadWriteUInt32(&count));
 
@@ -867,7 +870,7 @@ bool ChunkOffset::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t ChunkOffset::ComputeSizeInternal() {
+size_t ChunkOffset::ComputeSizeInternal() {
   return HeaderSize() + sizeof(uint32_t) + sizeof(uint32_t) * offsets.size();
 }
 
@@ -876,7 +879,7 @@ ChunkLargeOffset::~ChunkLargeOffset() {}
 FourCC ChunkLargeOffset::BoxType() const { return FOURCC_co64; }
 
 bool ChunkLargeOffset::ReadWriteInternal(BoxBuffer* buffer) {
-  uint32_t count = offsets.size();
+  uint32_t count = static_cast<uint32_t>(offsets.size());
 
   if (!buffer->Reading()) {
     // Switch to ChunkOffset box if it is able to fit in 32 bits offset.
@@ -899,8 +902,8 @@ bool ChunkLargeOffset::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t ChunkLargeOffset::ComputeSizeInternal() {
+size_t ChunkLargeOffset::ComputeSizeInternal() {
-  uint32_t count = offsets.size();
+  uint32_t count = static_cast<uint32_t>(offsets.size());
   int use_large_offset =
       (count > 0 && !IsFitIn32Bits(offsets[count - 1])) ? 1 : 0;
   return HeaderSize() + sizeof(count) +
@@ -912,7 +915,7 @@ SyncSample::~SyncSample() {}
 FourCC SyncSample::BoxType() const { return FOURCC_stss; }
 
 bool SyncSample::ReadWriteInternal(BoxBuffer* buffer) {
-  uint32_t count = sample_number.size();
+  uint32_t count = static_cast<uint32_t>(sample_number.size());
   RCHECK(ReadWriteHeaderInternal(buffer) &&
          buffer->ReadWriteUInt32(&count));
 
@@ -922,7 +925,7 @@ bool SyncSample::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t SyncSample::ComputeSizeInternal() {
+size_t SyncSample::ComputeSizeInternal() {
   // Sync sample box is optional. Skip it if it is empty.
   if (sample_number.empty())
     return 0;
@@ -979,8 +982,9 @@ bool CencSampleEncryptionInfoEntry::ReadWrite(BoxBuffer* buffer) {
 }
 
 uint32_t CencSampleEncryptionInfoEntry::ComputeSize() const {
-  return sizeof(uint32_t) + kCencKeyIdSize +
+  return static_cast<uint32_t>(
-         (constant_iv.empty() ? 0 : (sizeof(uint8_t) + constant_iv.size()));
+      sizeof(uint32_t) + kCencKeyIdSize +
+      (constant_iv.empty() ? 0 : (sizeof(uint8_t) + constant_iv.size())));
 }
 
 AudioRollRecoveryEntry::AudioRollRecoveryEntry(): roll_distance(0) {}
@@ -1033,7 +1037,7 @@ bool SampleGroupDescription::ReadWriteEntries(BoxBuffer* buffer,
     return false;
   }
 
-  uint32_t count = entries->size();
+  uint32_t count = static_cast<uint32_t>(entries->size());
   RCHECK(buffer->ReadWriteUInt32(&count));
   RCHECK(count != 0);
   entries->resize(count);
@@ -1052,7 +1056,7 @@ bool SampleGroupDescription::ReadWriteEntries(BoxBuffer* buffer,
   return true;
 }
 
-uint32_t SampleGroupDescription::ComputeSizeInternal() {
+size_t SampleGroupDescription::ComputeSizeInternal() {
   // Version 0 is obsoleted, so always generate version 1 box.
   version = 1;
   size_t entries_size = 0;
@@ -1091,7 +1095,7 @@ bool SampleToGroup::ReadWriteInternal(BoxBuffer* buffer) {
     return true;
   }
 
-  uint32_t count = entries.size();
+  uint32_t count = static_cast<uint32_t>(entries.size());
   RCHECK(buffer->ReadWriteUInt32(&count));
   entries.resize(count);
   for (uint32_t i = 0; i < count; ++i) {
@@ -1101,7 +1105,7 @@ bool SampleToGroup::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t SampleToGroup::ComputeSizeInternal() {
+size_t SampleToGroup::ComputeSizeInternal() {
   // This box is optional. Skip it if it is not used.
   if (entries.empty())
     return 0;
@@ -1133,7 +1137,8 @@ bool SampleTable::ReadWriteInternal(BoxBuffer* buffer) {
       CompactSampleSize compact_sample_size;
       RCHECK(reader->ReadChild(&compact_sample_size));
       sample_size.sample_size = 0;
-      sample_size.sample_count = compact_sample_size.sizes.size();
+      sample_size.sample_count =
+          static_cast<uint32_t>(compact_sample_size.sizes.size());
       sample_size.sizes.swap(compact_sample_size.sizes);
     }
 
@@ -1162,13 +1167,13 @@ bool SampleTable::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t SampleTable::ComputeSizeInternal() {
+size_t SampleTable::ComputeSizeInternal() {
-  uint32_t box_size =
+  size_t box_size = HeaderSize() + description.ComputeSize() +
-      HeaderSize() + description.ComputeSize() +
+                    decoding_time_to_sample.ComputeSize() +
-      decoding_time_to_sample.ComputeSize() +
+                    composition_time_to_sample.ComputeSize() +
-      composition_time_to_sample.ComputeSize() + sample_to_chunk.ComputeSize() +
+                    sample_to_chunk.ComputeSize() + sample_size.ComputeSize() +
-      sample_size.ComputeSize() + chunk_large_offset.ComputeSize() +
+                    chunk_large_offset.ComputeSize() +
-      sync_sample.ComputeSize();
+                    sync_sample.ComputeSize();
   for (auto& sample_group_description : sample_group_descriptions)
     box_size += sample_group_description.ComputeSize();
   for (auto& sample_to_group : sample_to_groups)
@@ -1181,7 +1186,7 @@ EditList::~EditList() {}
 FourCC EditList::BoxType() const { return FOURCC_elst; }
 
 bool EditList::ReadWriteInternal(BoxBuffer* buffer) {
-  uint32_t count = edits.size();
+  uint32_t count = static_cast<uint32_t>(edits.size());
   RCHECK(ReadWriteHeaderInternal(buffer) && buffer->ReadWriteUInt32(&count));
   edits.resize(count);
 
@@ -1196,7 +1201,7 @@ bool EditList::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t EditList::ComputeSizeInternal() {
+size_t EditList::ComputeSizeInternal() {
   // EditList box is optional. Skip it if it is empty.
   if (edits.empty())
     return 0;
@@ -1223,7 +1228,7 @@ bool Edit::ReadWriteInternal(BoxBuffer* buffer) {
          buffer->ReadWriteChild(&list);
 }
 
-uint32_t Edit::ComputeSizeInternal() {
+size_t Edit::ComputeSizeInternal() {
   // Edit box is optional. Skip it if it is empty.
   if (list.edits.empty())
     return 0;
@@ -1267,8 +1272,8 @@ bool HandlerReference::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t HandlerReference::ComputeSizeInternal() {
+size_t HandlerReference::ComputeSizeInternal() {
-  uint32_t box_size = HeaderSize() + kFourCCSize + 16;  // 16 bytes Reserved
+  size_t box_size = HeaderSize() + kFourCCSize + 16;  // 16 bytes Reserved
   switch (handler_type) {
     case FOURCC_vide:
       box_size += sizeof(kVideoHandlerName);
@@ -1332,7 +1337,7 @@ bool PrivFrame::ReadWrite(BoxBuffer* buffer) {
     return true;
   }
 
-  uint32_t frame_size = owner.size() + 1 + value.size();
+  uint32_t frame_size = static_cast<uint32_t>(owner.size() + 1 + value.size());
   // size should be encoded as synchsafe integer, which is not support here.
   // We don't expect frame_size to be larger than 0x7F. Synchsafe integers less
   // than 0x7F is encoded in the same way as normal integer.
@@ -1362,8 +1367,9 @@ uint32_t PrivFrame::ComputeSize() const {
   if (owner.empty() && value.empty())
     return 0;
   const uint32_t kFourCCSize = 4;
-  return kFourCCSize + sizeof(uint32_t) + sizeof(uint16_t) + owner.size() + 1 +
+  return kFourCCSize +
-         value.size();
+         static_cast<uint32_t>(sizeof(uint32_t) + sizeof(uint16_t) +
+                               owner.size() + 1 + value.size());
 }
 
 ID3v2::ID3v2() {}
@@ -1394,7 +1400,7 @@ bool ID3v2::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t ID3v2::ComputeSizeInternal() {
+size_t ID3v2::ComputeSizeInternal() {
   uint32_t private_frame_size = private_frame.ComputeSize();
   // Skip ID3v2 box generation if there is no private frame.
   return private_frame_size == 0 ? 0 : HeaderSize() + language.ComputeSize() +
@@ -1417,8 +1423,8 @@ bool Metadata::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t Metadata::ComputeSizeInternal() {
+size_t Metadata::ComputeSizeInternal() {
-  uint32_t id3v2_size = id3v2.ComputeSize();
+  size_t id3v2_size = id3v2.ComputeSize();
   // Skip metadata box generation if there is no metadata box.
   return id3v2_size == 0 ? 0
                          : HeaderSize() + handler.ComputeSize() + id3v2_size;
@@ -1453,7 +1459,7 @@ bool CodecConfiguration::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t CodecConfiguration::ComputeSizeInternal() {
+size_t CodecConfiguration::ComputeSizeInternal() {
   if (data.empty())
     return 0;
   DCHECK_NE(box_type, FOURCC_NULL);
@@ -1471,7 +1477,7 @@ bool PixelAspectRatio::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t PixelAspectRatio::ComputeSizeInternal() {
+size_t PixelAspectRatio::ComputeSizeInternal() {
   // This box is optional. Skip it if it is not initialized.
   if (h_spacing == 0 && v_spacing == 0)
     return 0;
@@ -1572,7 +1578,7 @@ bool VideoSampleEntry::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t VideoSampleEntry::ComputeSizeInternal() {
+size_t VideoSampleEntry::ComputeSizeInternal() {
   const FourCC actual_format = GetActualFormat();
   if (actual_format == FOURCC_NULL)
     return 0;
@@ -1624,7 +1630,7 @@ bool ElementaryStreamDescriptor::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t ElementaryStreamDescriptor::ComputeSizeInternal() {
+size_t ElementaryStreamDescriptor::ComputeSizeInternal() {
   // This box is optional. Skip it if not initialized.
   if (es_descriptor.object_type() == kForbidden)
     return 0;
@@ -1658,7 +1664,7 @@ bool DTSSpecific::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t DTSSpecific::ComputeSizeInternal() {
+size_t DTSSpecific::ComputeSizeInternal() {
   // This box is optional. Skip it if not initialized.
   if (sampling_frequency == 0)
     return 0;
@@ -1679,7 +1685,7 @@ bool AC3Specific::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t AC3Specific::ComputeSizeInternal() {
+size_t AC3Specific::ComputeSizeInternal() {
   // This box is optional. Skip it if not initialized.
   if (data.empty())
     return 0;
@@ -1693,12 +1699,12 @@ FourCC EC3Specific::BoxType() const { return FOURCC_dec3; }
 
 bool EC3Specific::ReadWriteInternal(BoxBuffer* buffer) {
   RCHECK(ReadWriteHeaderInternal(buffer));
-  uint32_t size = buffer->Reading() ? buffer->BytesLeft() : data.size();
+  size_t size = buffer->Reading() ? buffer->BytesLeft() : data.size();
   RCHECK(buffer->ReadWriteVector(&data, size));
   return true;
 }
 
-uint32_t EC3Specific::ComputeSizeInternal() {
+size_t EC3Specific::ComputeSizeInternal() {
   // This box is optional. Skip it if not initialized.
   if (data.empty())
     return 0;
@@ -1744,7 +1750,7 @@ bool OpusSpecific::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t OpusSpecific::ComputeSizeInternal() {
+size_t OpusSpecific::ComputeSizeInternal() {
   // This box is optional. Skip it if not initialized.
   if (opus_identification_header.empty())
     return 0;
@@ -1814,7 +1820,7 @@ bool AudioSampleEntry::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t AudioSampleEntry::ComputeSizeInternal() {
+size_t AudioSampleEntry::ComputeSizeInternal() {
   if (GetActualFormat() == FOURCC_NULL)
     return 0;
   return HeaderSize() + sizeof(data_reference_index) + sizeof(channelcount) +
@@ -1839,7 +1845,7 @@ bool WebVTTConfigurationBox::ReadWriteInternal(BoxBuffer* buffer) {
       buffer->Reading() ? buffer->BytesLeft() : config.size());
 }
 
-uint32_t WebVTTConfigurationBox::ComputeSizeInternal() {
+size_t WebVTTConfigurationBox::ComputeSizeInternal() {
   return HeaderSize() + config.size();
 }
 
@@ -1857,7 +1863,7 @@ bool WebVTTSourceLabelBox::ReadWriteInternal(BoxBuffer* buffer) {
                                                     : source_label.size());
 }
 
-uint32_t WebVTTSourceLabelBox::ComputeSizeInternal() {
+size_t WebVTTSourceLabelBox::ComputeSizeInternal() {
   if (source_label.empty())
     return 0;
   return HeaderSize() + source_label.size();
@@ -1893,7 +1899,7 @@ bool TextSampleEntry::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t TextSampleEntry::ComputeSizeInternal() {
+size_t TextSampleEntry::ComputeSizeInternal() {
   // 6 for the (anonymous) reserved bytes for SampleEntry class.
   return HeaderSize() + 6 + sizeof(data_reference_index) +
          config.ComputeSize() + label.ComputeSize();
@@ -1917,7 +1923,7 @@ bool MediaHeader::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t MediaHeader::ComputeSizeInternal() {
+size_t MediaHeader::ComputeSizeInternal() {
   version = IsFitIn32Bits(creation_time, modification_time, duration) ? 0 : 1;
   return HeaderSize() + sizeof(timescale) +
          sizeof(uint32_t) * (1 + version) * 3 + language.ComputeSize() +
@@ -1940,7 +1946,7 @@ bool VideoMediaHeader::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t VideoMediaHeader::ComputeSizeInternal() {
+size_t VideoMediaHeader::ComputeSizeInternal() {
   return HeaderSize() + sizeof(graphicsmode) + sizeof(opcolor_red) +
          sizeof(opcolor_green) + sizeof(opcolor_blue);
 }
@@ -1955,7 +1961,7 @@ bool SoundMediaHeader::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t SoundMediaHeader::ComputeSizeInternal() {
+size_t SoundMediaHeader::ComputeSizeInternal() {
   return HeaderSize() + sizeof(balance) + sizeof(uint16_t);
 }
 
@@ -1968,7 +1974,7 @@ bool SubtitleMediaHeader::ReadWriteInternal(BoxBuffer* buffer) {
   return ReadWriteHeaderInternal(buffer);
 }
 
-uint32_t SubtitleMediaHeader::ComputeSizeInternal() {
+size_t SubtitleMediaHeader::ComputeSizeInternal() {
   return HeaderSize();
 }
 
@@ -1988,7 +1994,7 @@ bool DataEntryUrl::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t DataEntryUrl::ComputeSizeInternal() {
+size_t DataEntryUrl::ComputeSizeInternal() {
   return HeaderSize() + location.size();
 }
 
@@ -1999,7 +2005,7 @@ DataReference::DataReference() {
 DataReference::~DataReference() {}
 FourCC DataReference::BoxType() const { return FOURCC_dref; }
 bool DataReference::ReadWriteInternal(BoxBuffer* buffer) {
-  uint32_t entry_count = data_entry.size();
+  uint32_t entry_count = static_cast<uint32_t>(data_entry.size());
   RCHECK(ReadWriteHeaderInternal(buffer) &&
          buffer->ReadWriteUInt32(&entry_count));
   data_entry.resize(entry_count);
@@ -2009,9 +2015,9 @@ bool DataReference::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t DataReference::ComputeSizeInternal() {
+size_t DataReference::ComputeSizeInternal() {
-  uint32_t count = data_entry.size();
+  uint32_t count = static_cast<uint32_t>(data_entry.size());
-  uint32_t box_size = HeaderSize() + sizeof(count);
+  size_t box_size = HeaderSize() + sizeof(count);
   for (uint32_t i = 0; i < count; ++i)
     box_size += data_entry[i].ComputeSize();
   return box_size;
@@ -2027,7 +2033,7 @@ bool DataInformation::ReadWriteInternal(BoxBuffer* buffer) {
          buffer->ReadWriteChild(&dref);
 }
 
-uint32_t DataInformation::ComputeSizeInternal() {
+size_t DataInformation::ComputeSizeInternal() {
   return HeaderSize() + dref.ComputeSize();
 }
 
@@ -2057,8 +2063,8 @@ bool MediaInformation::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t MediaInformation::ComputeSizeInternal() {
+size_t MediaInformation::ComputeSizeInternal() {
-  uint32_t box_size =
+  size_t box_size =
       HeaderSize() + dinf.ComputeSize() + sample_table.ComputeSize();
   switch (sample_table.description.type) {
     case kVideo:
@@ -2104,7 +2110,7 @@ bool Media::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t Media::ComputeSizeInternal() {
+size_t Media::ComputeSizeInternal() {
   handler.handler_type =
       TrackTypeToFourCC(information.sample_table.description.type);
   return HeaderSize() + header.ComputeSize() + handler.ComputeSize() +
@@ -2125,7 +2131,7 @@ bool Track::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t Track::ComputeSizeInternal() {
+size_t Track::ComputeSizeInternal() {
   return HeaderSize() + header.ComputeSize() + media.ComputeSize() +
          edit.ComputeSize();
 }
@@ -2141,7 +2147,7 @@ bool MovieExtendsHeader::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t MovieExtendsHeader::ComputeSizeInternal() {
+size_t MovieExtendsHeader::ComputeSizeInternal() {
   // This box is optional. Skip it if it is not used.
   if (fragment_duration == 0)
     return 0;
@@ -2168,7 +2174,7 @@ bool TrackExtends::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t TrackExtends::ComputeSizeInternal() {
+size_t TrackExtends::ComputeSizeInternal() {
   return HeaderSize() + sizeof(track_id) +
          sizeof(default_sample_description_index) +
          sizeof(default_sample_duration) + sizeof(default_sample_size) +
@@ -2193,11 +2199,11 @@ bool MovieExtends::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t MovieExtends::ComputeSizeInternal() {
+size_t MovieExtends::ComputeSizeInternal() {
   // This box is optional. Skip it if it does not contain any track.
   if (tracks.size() == 0)
     return 0;
-  uint32_t box_size = HeaderSize() + header.ComputeSize();
+  size_t box_size = HeaderSize() + header.ComputeSize();
   for (uint32_t i = 0; i < tracks.size(); ++i)
     box_size += tracks[i].ComputeSize();
   return box_size;
@@ -2227,9 +2233,9 @@ bool Movie::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t Movie::ComputeSizeInternal() {
+size_t Movie::ComputeSizeInternal() {
-  uint32_t box_size = HeaderSize() + header.ComputeSize() +
+  size_t box_size = HeaderSize() + header.ComputeSize() +
-                      metadata.ComputeSize() + extends.ComputeSize();
+                    metadata.ComputeSize() + extends.ComputeSize();
   for (uint32_t i = 0; i < tracks.size(); ++i)
     box_size += tracks[i].ComputeSize();
   for (uint32_t i = 0; i < pssh.size(); ++i)
@@ -2248,7 +2254,7 @@ bool TrackFragmentDecodeTime::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t TrackFragmentDecodeTime::ComputeSizeInternal() {
+size_t TrackFragmentDecodeTime::ComputeSizeInternal() {
   version = IsFitIn32Bits(decode_time) ? 0 : 1;
   return HeaderSize() + sizeof(uint32_t) * (1 + version);
 }
@@ -2262,7 +2268,7 @@ bool MovieFragmentHeader::ReadWriteInternal(BoxBuffer* buffer) {
          buffer->ReadWriteUInt32(&sequence_number);
 }
 
-uint32_t MovieFragmentHeader::ComputeSizeInternal() {
+size_t MovieFragmentHeader::ComputeSizeInternal() {
   return HeaderSize() + sizeof(sequence_number);
 }
 
@@ -2314,8 +2320,8 @@ bool TrackFragmentHeader::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t TrackFragmentHeader::ComputeSizeInternal() {
+size_t TrackFragmentHeader::ComputeSizeInternal() {
-  uint32_t box_size = HeaderSize() + sizeof(track_id);
+  size_t box_size = HeaderSize() + sizeof(track_id);
   if (flags & kSampleDescriptionIndexPresentMask)
     box_size += sizeof(sample_description_index);
   if (flags & kDefaultSampleDurationPresentMask)
@@ -2434,8 +2440,8 @@ bool TrackFragmentRun::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t TrackFragmentRun::ComputeSizeInternal() {
+size_t TrackFragmentRun::ComputeSizeInternal() {
-  uint32_t box_size = HeaderSize() + sizeof(sample_count);
+  size_t box_size = HeaderSize() + sizeof(sample_count);
   if (flags & kDataOffsetPresentMask)
     box_size += sizeof(data_offset);
   if (flags & kFirstSampleFlagsPresentMask)
@@ -2479,11 +2485,11 @@ bool TrackFragment::ReadWriteInternal(BoxBuffer* buffer) {
          buffer->TryReadWriteChild(&sample_encryption);
 }
 
-uint32_t TrackFragment::ComputeSizeInternal() {
+size_t TrackFragment::ComputeSizeInternal() {
-  uint32_t box_size =
+  size_t box_size = HeaderSize() + header.ComputeSize() +
-      HeaderSize() + header.ComputeSize() + decode_time.ComputeSize() +
+                    decode_time.ComputeSize() + auxiliary_size.ComputeSize() +
-      auxiliary_size.ComputeSize() + auxiliary_offset.ComputeSize() +
+                    auxiliary_offset.ComputeSize() +
-      sample_encryption.ComputeSize();
+                    sample_encryption.ComputeSize();
   for (uint32_t i = 0; i < runs.size(); ++i)
     box_size += runs[i].ComputeSize();
   for (uint32_t i = 0; i < sample_group_descriptions.size(); ++i)
@@ -2515,8 +2521,8 @@ bool MovieFragment::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t MovieFragment::ComputeSizeInternal() {
+size_t MovieFragment::ComputeSizeInternal() {
-  uint32_t box_size = HeaderSize() + header.ComputeSize();
+  size_t box_size = HeaderSize() + header.ComputeSize();
   for (uint32_t i = 0; i < tracks.size(); ++i)
     box_size += tracks[i].ComputeSize();
   for (uint32_t i = 0; i < pssh.size(); ++i)
@@ -2573,7 +2579,7 @@ bool SegmentIndex::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t SegmentIndex::ComputeSizeInternal() {
+size_t SegmentIndex::ComputeSizeInternal() {
   version = IsFitIn32Bits(earliest_presentation_time, first_offset) ? 0 : 1;
   return HeaderSize() + sizeof(reference_id) + sizeof(timescale) +
          sizeof(uint32_t) * (1 + version) * 2 + 2 * sizeof(uint16_t) +
@@ -2589,7 +2595,7 @@ bool MediaData::ReadWriteInternal(BoxBuffer* buffer) {
   return false;
 }
 
-uint32_t MediaData::ComputeSizeInternal() {
+size_t MediaData::ComputeSizeInternal() {
   return HeaderSize() + data_size;
 }
 
@@ -2603,7 +2609,7 @@ bool CueSourceIDBox::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t CueSourceIDBox::ComputeSizeInternal() {
+size_t CueSourceIDBox::ComputeSizeInternal() {
   if (source_id == kCueSourceIdNotSet)
     return 0;
   return HeaderSize() + sizeof(source_id);
@@ -2623,7 +2629,7 @@ bool CueTimeBox::ReadWriteInternal(BoxBuffer* buffer) {
       buffer->Reading() ? buffer->BytesLeft() : cue_current_time.size());
 }
 
-uint32_t CueTimeBox::ComputeSizeInternal() {
+size_t CueTimeBox::ComputeSizeInternal() {
   if (cue_current_time.empty())
     return 0;
   return HeaderSize() + cue_current_time.size();
@@ -2642,7 +2648,7 @@ bool CueIDBox::ReadWriteInternal(BoxBuffer* buffer) {
       &cue_id, buffer->Reading() ? buffer->BytesLeft() : cue_id.size());
 }
 
-uint32_t CueIDBox::ComputeSizeInternal() {
+size_t CueIDBox::ComputeSizeInternal() {
   if (cue_id.empty())
     return 0;
   return HeaderSize() + cue_id.size();
@@ -2661,7 +2667,7 @@ bool CueSettingsBox::ReadWriteInternal(BoxBuffer* buffer) {
       &settings, buffer->Reading() ? buffer->BytesLeft() : settings.size());
 }
 
-uint32_t CueSettingsBox::ComputeSizeInternal() {
+size_t CueSettingsBox::ComputeSizeInternal() {
   if (settings.empty())
     return 0;
   return HeaderSize() + settings.size();
@@ -2680,7 +2686,7 @@ bool CuePayloadBox::ReadWriteInternal(BoxBuffer* buffer) {
       &cue_text, buffer->Reading() ? buffer->BytesLeft() : cue_text.size());
 }
 
-uint32_t CuePayloadBox::ComputeSizeInternal() {
+size_t CuePayloadBox::ComputeSizeInternal() {
   return HeaderSize() + cue_text.size();
 }
 
@@ -2695,7 +2701,7 @@ bool VTTEmptyCueBox::ReadWriteInternal(BoxBuffer* buffer) {
   return ReadWriteHeaderInternal(buffer);
 }
 
-uint32_t VTTEmptyCueBox::ComputeSizeInternal() {
+size_t VTTEmptyCueBox::ComputeSizeInternal() {
   return HeaderSize();
 }
 
@@ -2713,7 +2719,7 @@ bool VTTAdditionalTextBox::ReadWriteInternal(BoxBuffer* buffer) {
       buffer->Reading() ? buffer->BytesLeft() : cue_additional_text.size());
 }
 
-uint32_t VTTAdditionalTextBox::ComputeSizeInternal() {
+size_t VTTAdditionalTextBox::ComputeSizeInternal() {
   return HeaderSize() + cue_additional_text.size();
 }
 
@@ -2735,7 +2741,7 @@ bool VTTCueBox::ReadWriteInternal(BoxBuffer* buffer) {
   return true;
 }
 
-uint32_t VTTCueBox::ComputeSizeInternal() {
+size_t VTTCueBox::ComputeSizeInternal() {
   return HeaderSize() + cue_source_id.ComputeSize() + cue_id.ComputeSize() +
          cue_time.ComputeSize() + cue_settings.ComputeSize() +
          cue_payload.ComputeSize();

packager/media/formats/mp4/box_definitions.h

@@ -38,7 +38,7 @@ class BoxBuffer;
                                                       \
  private:                                             \
   bool ReadWriteInternal(BoxBuffer* buffer) override; \
-  uint32_t ComputeSizeInternal() override;            \
+  size_t ComputeSizeInternal() override;              \
                                                       \
  public:
 

packager/media/formats/mp4/box_definitions_unittest.cc

@@ -44,7 +44,7 @@ class BoxDefinitionsTestGeneral : public testing::Test {
     // Create a fake skip box contains the buffer and Write it.
     BufferWriter buffer;
     buffer.Swap(buffer_.get());
-    uint32_t skip_box_size = buffer.Size() + kBoxSize;
+    uint32_t skip_box_size = static_cast<uint32_t>(buffer.Size() + kBoxSize);
     buffer_->AppendInt(skip_box_size);
     buffer_->AppendInt(static_cast<uint32_t>(FOURCC_skip));
     buffer_->AppendBuffer(buffer);

packager/media/formats/mp4/box_reader_unittest.cc

@@ -35,7 +35,7 @@ struct FreeBox : Box {
   bool ReadWriteInternal(BoxBuffer* buffer) override {
     return true;
   }
-  uint32_t ComputeSizeInternal() override {
+  size_t ComputeSizeInternal() override {
     NOTIMPLEMENTED();
     return 0;
   }
@@ -46,7 +46,7 @@ struct PsshBox : Box {
   bool ReadWriteInternal(BoxBuffer* buffer) override {
     return buffer->ReadWriteUInt32(&val);
   }
-  uint32_t ComputeSizeInternal() override {
+  size_t ComputeSizeInternal() override {
     NOTIMPLEMENTED();
     return 0;
   }
@@ -70,7 +70,7 @@ struct SkipBox : FullBox {
     }
     return buffer->TryReadWriteChild(&empty);
   }
-  uint32_t ComputeSizeInternal() override {
+  size_t ComputeSizeInternal() override {
     NOTIMPLEMENTED();
     return 0;
   }

packager/media/formats/mp4/encrypting_fragmenter.cc

@@ -179,7 +179,8 @@ void EncryptingFragmenter::FinalizeFragmentForEncryption() {
 
   // Optimize saiz box.
   SampleAuxiliaryInformationSize& saiz = traf()->auxiliary_size;
-  saiz.sample_count = traf()->runs[0].sample_sizes.size();
+  saiz.sample_count =
+      static_cast<uint32_t>(traf()->runs[0].sample_sizes.size());
   if (!saiz.sample_info_sizes.empty()) {
     if (!OptimizeSampleEntries(&saiz.sample_info_sizes,
                                &saiz.default_sample_info_size)) {
@@ -242,7 +243,7 @@ Status EncryptingFragmenter::CreateEncryptor() {
   return Status::OK;
 }
 
-void EncryptingFragmenter::EncryptBytes(uint8_t* data, uint32_t size) {
+void EncryptingFragmenter::EncryptBytes(uint8_t* data, size_t size) {
   DCHECK(encryptor_);
   CHECK(encryptor_->Crypt(data, size, data));
 }
@@ -268,8 +269,8 @@ Status EncryptingFragmenter::EncryptSample(scoped_refptr<MediaSample> sample) {
         SubsampleEntry subsample;
         subsample.clear_bytes =
             static_cast<uint16_t>(frame.uncompressed_header_size);
-        subsample.cipher_bytes =
+        subsample.cipher_bytes = static_cast<uint32_t>(
-            frame.frame_size - frame.uncompressed_header_size;
+            frame.frame_size - frame.uncompressed_header_size);
 
         // "VP Codec ISO Media File Format Binding" document requires that the
         // encrypted bytes of each frame within the superframe must be block

packager/media/formats/mp4/encrypting_fragmenter.h

@@ -79,7 +79,7 @@ class EncryptingFragmenter : public Fragmenter {
   }
 
  private:
-  void EncryptBytes(uint8_t* data, uint32_t size);
+  void EncryptBytes(uint8_t* data, size_t size);
   Status EncryptSample(scoped_refptr<MediaSample> sample);
 
   // Should we enable subsample encryption?

packager/media/formats/mp4/fragmenter.cc

@@ -60,7 +60,8 @@ Status Fragmenter::AddSample(scoped_refptr<MediaSample> sample) {
     LOG(WARNING) << "MP4 samples do not support side data. Side data ignored.";
 
   // Fill in sample parameters. It will be optimized later.
-  traf_->runs[0].sample_sizes.push_back(sample->data_size());
+  traf_->runs[0].sample_sizes.push_back(
+      static_cast<uint32_t>(sample->data_size()));
   traf_->runs[0].sample_durations.push_back(sample->duration());
   traf_->runs[0].sample_flags.push_back(
       sample->is_key_frame() ? 0 : TrackFragmentHeader::kNonKeySampleMask);
@@ -109,7 +110,8 @@ Status Fragmenter::InitializeFragment(int64_t first_sample_dts) {
 
 void Fragmenter::FinalizeFragment() {
   // Optimize trun box.
-  traf_->runs[0].sample_count = traf_->runs[0].sample_sizes.size();
+  traf_->runs[0].sample_count =
+      static_cast<uint32_t>(traf_->runs[0].sample_sizes.size());
   if (OptimizeSampleEntries(&traf_->runs[0].sample_durations,
                             &traf_->header.default_sample_duration)) {
     traf_->header.flags |=

packager/media/formats/mp4/mp4_media_parser.cc

@@ -269,7 +269,7 @@ bool MP4MediaParser::ParseBox(bool* err) {
     VLOG(2) << "Skipping top-level box: " << FourCCToString(reader->type());
   }
 
-  queue_.Pop(reader->size());
+  queue_.Pop(static_cast<int>(reader->size()));
   return !(*err);
 }
 

packager/media/formats/mp4/mp4_media_parser_unittest.cc

@@ -53,7 +53,7 @@ class MP4MediaParserTest : public testing::Test {
   size_t num_samples_;
 
   bool AppendData(const uint8_t* data, size_t length) {
-    return parser_->Parse(data, length);
+    return parser_->Parse(data, static_cast<int>(length));
   }
 
   bool AppendDataInPieces(const uint8_t* data,

packager/media/formats/mp4/mp4_muxer.cc

@@ -101,7 +101,7 @@ Status MP4Muxer::Initialize() {
 
   moov->header.creation_time = IsoTimeNow();
   moov->header.modification_time = IsoTimeNow();
-  moov->header.next_track_id = streams().size() + 1;
+  moov->header.next_track_id = static_cast<uint32_t>(streams().size()) + 1;
 
   moov->tracks.resize(streams().size());
   moov->extends.tracks.resize(streams().size());

packager/media/formats/mp4/multi_segment_segmenter.cc

@@ -85,18 +85,18 @@ Status MultiSegmentSegmenter::DoFinalizeSegment() {
   // sidx() contains pre-generated segment references with one reference per
   // fragment. Calculate |num_fragments_per_subsegment| and combine
   // pre-generated references into final subsegment references.
-  uint32_t num_fragments = sidx()->references.size();
+  size_t num_fragments = sidx()->references.size();
-  uint32_t num_fragments_per_subsegment =
+  size_t num_fragments_per_subsegment =
       (num_fragments - 1) / options().num_subsegments_per_sidx + 1;
   if (num_fragments_per_subsegment <= 1)
     return WriteSegment();
 
-  uint32_t frag_index = 0;
+  size_t frag_index = 0;
-  uint32_t subseg_index = 0;
+  size_t subseg_index = 0;
   std::vector<SegmentReference>& refs = sidx()->references;
   uint64_t first_sap_time =
       refs[0].sap_delta_time + refs[0].earliest_presentation_time;
-  for (uint32_t i = 1; i < num_fragments; ++i) {
+  for (size_t i = 1; i < num_fragments; ++i) {
     refs[subseg_index].referenced_size += refs[i].referenced_size;
     refs[subseg_index].subsegment_duration += refs[i].subsegment_duration;
     refs[subseg_index].earliest_presentation_time =

packager/media/formats/mp4/segmenter.cc

@@ -456,7 +456,7 @@ Status Segmenter::FinalizeFragment(bool finalize_segment,
           sizeof(uint32_t);  // for sample count field in 'senc'
     }
     traf.runs[0].data_offset = data_offset + mdat.data_size;
-    mdat.data_size += fragmenters_[i]->data()->Size();
+    mdat.data_size += static_cast<uint32_t>(fragmenters_[i]->data()->Size());
   }
 
   // Generate segment reference.

packager/media/formats/mp4/track_run_iterator.cc

@@ -79,7 +79,7 @@ TrackRunIterator::~TrackRunIterator() {}
 static void PopulateSampleInfo(const TrackExtends& trex,
                                const TrackFragmentHeader& tfhd,
                                const TrackFragmentRun& trun,
-                               const uint32_t i,
+                               const size_t i,
                                SampleInfo* sample_info) {
   if (i < trun.sample_sizes.size()) {
     sample_info->size = trun.sample_sizes[i];
@@ -187,7 +187,7 @@ bool TrackRunIterator::Init() {
     int64_t run_start_dts = 0;
 
     uint32_t num_samples = sample_size.sample_count;
-    uint32_t num_chunks = chunk_offset_vector.size();
+    uint32_t num_chunks = static_cast<uint32_t>(chunk_offset_vector.size());
 
     // Check that total number of samples match.
     DCHECK_EQ(num_samples, decoding_time.NumSamples());
@@ -410,7 +410,8 @@ bool TrackRunIterator::Init(const MovieFragment& moof) {
 
       tri.samples.resize(trun.sample_count);
       for (size_t k = 0; k < trun.sample_count; k++) {
-        PopulateSampleInfo(*trex, traf.header, trun, k, &tri.samples[k]);
+        PopulateSampleInfo(*trex, traf.header, trun, k,
+                           &tri.samples[k]);
         run_start_dts += tri.samples[k].duration;
       }
       runs_.push_back(tri);

packager/media/formats/mp4/track_run_iterator_unittest.cc

@@ -277,7 +277,7 @@ class TrackRunIteratorTest : public testing::Test {
   void SetAscending(std::vector<uint32_t>* vec) {
     vec->resize(10);
     for (size_t i = 0; i < vec->size(); i++)
-      (*vec)[i] = i + 1;
+      (*vec)[i] = static_cast<uint32_t>(i + 1);
   }
 };
 

packager/media/formats/webm/encryptor.cc

@@ -118,10 +118,11 @@ Status Encryptor::EncryptFrame(scoped_refptr<MediaSample> sample,
       uint32_t partition_offset = 0;
       BufferWriter offsets_buffer(kWebMPartitionOffsetSize * num_partitions);
       for (const auto& vpx_frame : vpx_frames) {
-        uint32_t encrypted_size =
+        uint32_t encrypted_size = static_cast<uint32_t>(
-            vpx_frame.frame_size - vpx_frame.uncompressed_header_size;
+            vpx_frame.frame_size - vpx_frame.uncompressed_header_size);
         encrypted_size -= encrypted_size % kAesBlockSize;
-        uint32_t clear_size = vpx_frame.frame_size - encrypted_size;
+        uint32_t clear_size =
+            static_cast<uint32_t>(vpx_frame.frame_size - encrypted_size);
         partition_offset += clear_size;
         offsets_buffer.AppendInt(partition_offset);
         if (encrypted_size > 0) {

packager/media/formats/webm/multi_segment_segmenter_unittest.cc

@@ -142,11 +142,11 @@ TEST_F(MultiSegmentSegmenterTest, SplitsFilesOnSegmentDuration) {
   // Verify the resulting data.
   ClusterParser parser;
   ASSERT_NO_FATAL_FAILURE(parser.PopulateFromCluster(TemplateFileName(0)));
-  ASSERT_EQ(1, parser.cluster_count());
+  ASSERT_EQ(1u, parser.cluster_count());
   EXPECT_EQ(5, parser.GetFrameCountForCluster(0));
 
   ASSERT_NO_FATAL_FAILURE(parser.PopulateFromCluster(TemplateFileName(1)));
-  ASSERT_EQ(1, parser.cluster_count());
+  ASSERT_EQ(1u, parser.cluster_count());
   EXPECT_EQ(3, parser.GetFrameCountForCluster(0));
 
   EXPECT_FALSE(File::Open(TemplateFileName(2).c_str(), "r"));
@@ -170,11 +170,11 @@ TEST_F(MultiSegmentSegmenterTest, RespectsSegmentSAPAlign) {
   // Verify the resulting data.
   ClusterParser parser;
   ASSERT_NO_FATAL_FAILURE(parser.PopulateFromCluster(TemplateFileName(0)));
-  ASSERT_EQ(1, parser.cluster_count());
+  ASSERT_EQ(1u, parser.cluster_count());
   EXPECT_EQ(6, parser.GetFrameCountForCluster(0));
 
   ASSERT_NO_FATAL_FAILURE(parser.PopulateFromCluster(TemplateFileName(1)));
-  ASSERT_EQ(1, parser.cluster_count());
+  ASSERT_EQ(1u, parser.cluster_count());
   EXPECT_EQ(4, parser.GetFrameCountForCluster(0));
 
   EXPECT_FALSE(File::Open(TemplateFileName(2).c_str(), "r"));
@@ -196,7 +196,7 @@ TEST_F(MultiSegmentSegmenterTest, SplitsClustersOnFragmentDuration) {
   // Verify the resulting data.
   ClusterParser parser;
   ASSERT_NO_FATAL_FAILURE(parser.PopulateFromCluster(TemplateFileName(0)));
-  ASSERT_EQ(2, parser.cluster_count());
+  ASSERT_EQ(2u, parser.cluster_count());
   EXPECT_EQ(5, parser.GetFrameCountForCluster(0));
   EXPECT_EQ(3, parser.GetFrameCountForCluster(1));
 
@@ -221,7 +221,7 @@ TEST_F(MultiSegmentSegmenterTest, RespectsFragmentSAPAlign) {
   // Verify the resulting data.
   ClusterParser parser;
   ASSERT_NO_FATAL_FAILURE(parser.PopulateFromCluster(TemplateFileName(0)));
-  ASSERT_EQ(2, parser.cluster_count());
+  ASSERT_EQ(2u, parser.cluster_count());
   EXPECT_EQ(6, parser.GetFrameCountForCluster(0));
   EXPECT_EQ(4, parser.GetFrameCountForCluster(1));
 

packager/media/formats/webm/segmenter_test_base.cc

@@ -121,7 +121,8 @@ void SegmentTestBase::ClusterParser::PopulateFromCluster(
   WebMListParser cluster_parser(kWebMIdCluster, this);
   size_t position = 0;
   while (position < size) {
-    int read = cluster_parser.Parse(data + position, size - position);
+    int read = cluster_parser.Parse(data + position,
+                                    static_cast<int>(size - position));
     ASSERT_LT(0, read);
 
     cluster_parser.Reset();
@@ -138,11 +139,12 @@ void SegmentTestBase::ClusterParser::PopulateFromSegment(
   const uint8_t* data = reinterpret_cast<const uint8_t*>(file_contents.c_str());
   const size_t size = file_contents.size();
   WebMListParser header_parser(kWebMIdEBMLHeader, this);
-  int offset = header_parser.Parse(data, size);
+  int offset = header_parser.Parse(data, static_cast<int>(size));
   ASSERT_LT(0, offset);
 
   WebMListParser segment_parser(kWebMIdSegment, this);
-  ASSERT_LT(0, segment_parser.Parse(data + offset, size - offset));
+  ASSERT_LT(
+      0, segment_parser.Parse(data + offset, static_cast<int>(size) - offset));
 }
 
 int SegmentTestBase::ClusterParser::GetFrameCountForCluster(size_t i) const {
@@ -150,7 +152,7 @@ int SegmentTestBase::ClusterParser::GetFrameCountForCluster(size_t i) const {
   return cluster_sizes_[i];
 }
 
-int SegmentTestBase::ClusterParser::cluster_count() const {
+size_t SegmentTestBase::ClusterParser::cluster_count() const {
   return cluster_sizes_.size();
 }
 

packager/media/formats/webm/segmenter_test_base.h

@@ -89,7 +89,7 @@ class SegmentTestBase : public ::testing::Test {
 
     int GetFrameCountForCluster(size_t i) const;
 
-    int cluster_count() const;
+    size_t cluster_count() const;
 
    private:
     // WebMParserClient overrides.

packager/media/formats/webm/single_segment_segmenter_unittest.cc

@@ -180,7 +180,7 @@ TEST_F(SingleSegmentSegmenterTest, SplitsClustersOnSegmentDuration) {
   // Verify the resulting data.
   ClusterParser parser;
   ASSERT_NO_FATAL_FAILURE(parser.PopulateFromSegment(OutputFileName()));
-  ASSERT_EQ(2, parser.cluster_count());
+  ASSERT_EQ(2u, parser.cluster_count());
   EXPECT_EQ(5, parser.GetFrameCountForCluster(0));
   EXPECT_EQ(3, parser.GetFrameCountForCluster(1));
 }
@@ -201,7 +201,7 @@ TEST_F(SingleSegmentSegmenterTest, IgnoresFragmentDuration) {
   // Verify the resulting data.
   ClusterParser parser;
   ASSERT_NO_FATAL_FAILURE(parser.PopulateFromSegment(OutputFileName()));
-  ASSERT_EQ(1, parser.cluster_count());
+  ASSERT_EQ(1u, parser.cluster_count());
   EXPECT_EQ(8, parser.GetFrameCountForCluster(0));
 }
 
@@ -226,7 +226,7 @@ TEST_F(SingleSegmentSegmenterTest, RespectsSAPAlign) {
   // Segments are 1 second, so there would normally be 3 frames per cluster,
   // but since it's SAP aligned and only frame 7 is a key-frame, there are
   // two clusters with 6 and 4 frames respectively.
-  ASSERT_EQ(2, parser.cluster_count());
+  ASSERT_EQ(2u, parser.cluster_count());
   EXPECT_EQ(6, parser.GetFrameCountForCluster(0));
   EXPECT_EQ(4, parser.GetFrameCountForCluster(1));
 }

packager/media/formats/webm/tracks_builder.cc

@@ -61,9 +61,8 @@ static int DoubleElementSize(int element_id) {
 }
 
 static int StringElementSize(int element_id, const std::string& value) {
- return GetUIntSize(element_id) +
+  return GetUIntSize(element_id) + GetUIntMkvSize(value.length()) +
-        GetUIntMkvSize(value.length()) +
+         static_cast<int>(value.length());
-        value.length();
 }
 
 static void SerializeInt(uint8_t** buf_ptr,
@@ -196,7 +195,7 @@ std::vector<uint8_t> TracksBuilder::Finish() {
   buffer.resize(GetTracksSize());
 
   // Populate the storage with a tracks header
-  WriteTracks(&buffer[0], buffer.size());
+  WriteTracks(&buffer[0], static_cast<int>(buffer.size()));
 
   return buffer;
 }

packager/media/formats/webm/webm_cluster_parser_unittest.cc

@@ -230,7 +230,7 @@ std::unique_ptr<Cluster> CreateCluster(int timecode,
 std::unique_ptr<Cluster> CreateCluster(const uint8_t* data, size_t data_size) {
   ClusterBuilder cb;
   cb.SetClusterTimecode(0);
-  cb.AddSimpleBlock(kVideoTrackNum, 0, 0, data, data_size);
+  cb.AddSimpleBlock(kVideoTrackNum, 0, 0, data, static_cast<int>(data_size));
   return cb.Finish();
 }
 
@@ -239,8 +239,8 @@ bool VerifyBuffersHelper(const BufferQueue& audio_buffers,
                          const BufferQueue& text_buffers,
                          const BlockInfo* block_info,
                          int block_count) {
-  int buffer_count = audio_buffers.size() + video_buffers.size() +
+  int buffer_count = static_cast<int>(
-      text_buffers.size();
+      audio_buffers.size() + video_buffers.size() + text_buffers.size());
   if (block_count != buffer_count) {
     LOG(ERROR) << __FUNCTION__ << " : block_count (" << block_count
                << ") mismatches buffer_count (" << buffer_count << ")";

packager/media/formats/webm/webm_crypto_helpers.cc

@@ -30,7 +30,7 @@ std::vector<uint8_t> GenerateWebMCounterBlock(const uint8_t* iv, int iv_size) {
 bool WebMCreateDecryptConfig(const uint8_t* data,
                              int data_size,
                              const uint8_t* key_id,
-                             int key_id_size,
+                             size_t key_id_size,
                              std::unique_ptr<DecryptConfig>* decrypt_config,
                              int* data_offset) {
   int header_size = kWebMSignalByteSize;

packager/media/formats/webm/webm_crypto_helpers.h

@@ -23,7 +23,7 @@ namespace media {
 bool WebMCreateDecryptConfig(const uint8_t* data,
                              int data_size,
                              const uint8_t* key_id,
-                             int key_id_size,
+                             size_t key_id_size,
                              std::unique_ptr<DecryptConfig>* decrypt_config,
                              int* data_offset);
 

packager/media/formats/webm/webm_parser.cc

@@ -892,7 +892,8 @@ bool WebMListParser::OnListStart(int id, int64_t size) {
   if (!element_info)
     return false;
 
-  int current_level = root_level_ + list_state_stack_.size() - 1;
+  int current_level =
+      root_level_ + static_cast<int>(list_state_stack_.size()) - 1;
   if (current_level + 1 != element_info->level_)
     return false;
 

packager/media/formats/webm/webm_parser_unittest.cc

@@ -345,7 +345,7 @@ TEST_F(WebMParserTest, ReservedIds) {
   for (size_t i = 0; i < arraysize(kBuffers); i++) {
     int id;
     int64_t element_size;
-    int buffer_size = 2 + i;
+    int buffer_size = 2 + static_cast<int>(i);
     EXPECT_EQ(buffer_size, WebMParseElementHeader(kBuffers[i], buffer_size,
                                                   &id, &element_size));
     EXPECT_EQ(id, kWebMReservedId);
@@ -373,7 +373,7 @@ TEST_F(WebMParserTest, ReservedSizes) {
   for (size_t i = 0; i < arraysize(kBuffers); i++) {
     int id;
     int64_t element_size;
-    int buffer_size = 2 + i;
+    int buffer_size = 2 + static_cast<int>(i);
     EXPECT_EQ(buffer_size, WebMParseElementHeader(kBuffers[i], buffer_size,
                                                   &id, &element_size));
     EXPECT_EQ(id, 0xA3);

packager/media/formats/webm/webm_tracks_parser_unittest.cc

@@ -29,15 +29,15 @@ class WebMTracksParserTest : public testing::Test {
 
  protected:
   void VerifyTextTrackInfo(const uint8_t* buffer,
-                           int buffer_size,
+                           size_t buffer_size,
                            TextKind text_kind,
                            const std::string& name,
                            const std::string& language) {
     std::unique_ptr<WebMTracksParser> parser(new WebMTracksParser(false));
 
-    int result = parser->Parse(buffer, buffer_size);
+    int result = parser->Parse(buffer, static_cast<int>(buffer_size));
     EXPECT_GT(result, 0);
-    EXPECT_EQ(result, buffer_size);
+    EXPECT_EQ(result, static_cast<int>(buffer_size));
 
     const WebMTracksParser::TextTracks& text_tracks = parser->text_tracks();
     EXPECT_EQ(text_tracks.size(), WebMTracksParser::TextTracks::size_type(1));
@@ -103,7 +103,7 @@ TEST_F(WebMTracksParserTest, IgnoringTextTracks) {
   const std::vector<uint8_t> buf = tb.Finish();
   std::unique_ptr<WebMTracksParser> parser(new WebMTracksParser(true));
 
-  int result = parser->Parse(&buf[0], buf.size());
+  int result = parser->Parse(&buf[0], static_cast<int>(buf.size()));
   EXPECT_GT(result, 0);
   EXPECT_EQ(result, static_cast<int>(buf.size()));
 
@@ -116,7 +116,7 @@ TEST_F(WebMTracksParserTest, IgnoringTextTracks) {
   // Test again w/o ignoring the test tracks.
   parser.reset(new WebMTracksParser(false));
 
-  result = parser->Parse(&buf[0], buf.size());
+  result = parser->Parse(&buf[0], static_cast<int>(buf.size()));
   EXPECT_GT(result, 0);
 
   EXPECT_EQ(parser->ignored_tracks().size(), 0u);
@@ -135,7 +135,7 @@ TEST_F(WebMTracksParserTest, AudioVideoDefaultDurationUnset) {
   const std::vector<uint8_t> buf = tb.Finish();
 
   std::unique_ptr<WebMTracksParser> parser(new WebMTracksParser(true));
-  int result = parser->Parse(&buf[0], buf.size());
+  int result = parser->Parse(&buf[0], static_cast<int>(buf.size()));
   EXPECT_LE(0, result);
   EXPECT_EQ(static_cast<int>(buf.size()), result);
 
@@ -166,7 +166,7 @@ TEST_F(WebMTracksParserTest, AudioVideoDefaultDurationSet) {
   const std::vector<uint8_t> buf = tb.Finish();
 
   std::unique_ptr<WebMTracksParser> parser(new WebMTracksParser(true));
-  int result = parser->Parse(&buf[0], buf.size());
+  int result = parser->Parse(&buf[0], static_cast<int>(buf.size()));
   EXPECT_LE(0, result);
   EXPECT_EQ(static_cast<int>(buf.size()), result);
 
@@ -187,7 +187,7 @@ TEST_F(WebMTracksParserTest, InvalidZeroDefaultDurationSet) {
 
   std::unique_ptr<WebMTracksParser> parser(new WebMTracksParser(true));
 
-  EXPECT_EQ(-1, parser->Parse(&buf[0], buf.size()));
+  EXPECT_EQ(-1, parser->Parse(&buf[0], static_cast<int>(buf.size())));
 }
 
 TEST_F(WebMTracksParserTest, HighTrackUID) {
@@ -198,7 +198,7 @@ TEST_F(WebMTracksParserTest, HighTrackUID) {
   const std::vector<uint8_t> buf = tb.Finish();
 
   std::unique_ptr<WebMTracksParser> parser(new WebMTracksParser(true));
-  EXPECT_GT(parser->Parse(&buf[0], buf.size()),0);
+  EXPECT_GT(parser->Parse(&buf[0], static_cast<int>(buf.size())), 0);
 }
 
 }  // namespace media

packager/media/formats/wvm/wvm_media_parser.cc

@@ -48,7 +48,7 @@ const uint32_t kPesStreamIdVideo = 0xE0;
 const uint32_t kPesStreamIdAudioMask = 0xE0;
 const uint32_t kPesStreamIdAudio = 0xC0;
 const uint32_t kVersion4 = 4;
-const int kAdtsHeaderMinSize = 7;
+const size_t kAdtsHeaderMinSize = 7;
 const uint8_t kAacSampleSizeBits = 16;
 // Applies to all video streams.
 const uint8_t kNaluLengthSize = 4;  // unit is bytes.
@@ -125,8 +125,8 @@ void WvmMediaParser::Init(const InitCB& init_cb,
 }
 
 bool WvmMediaParser::Parse(const uint8_t* buf, int size) {
-  uint32_t num_bytes, prev_size;
+  size_t num_bytes = 0;
-  num_bytes = prev_size = 0;
+  size_t prev_size = 0;
   const uint8_t* read_ptr = buf;
   const uint8_t* end = read_ptr + size;
 
@@ -208,7 +208,7 @@ bool WvmMediaParser::Parse(const uint8_t* buf, int size) {
         parse_state_ = SystemHeaderSkip;
         break;
       case PackHeaderStuffingSkip:
-        if ((end - read_ptr) >= (int32_t)skip_bytes_) {
+        if ((end - read_ptr) >= skip_bytes_) {
           read_ptr += skip_bytes_;
           skip_bytes_ = 0;
           parse_state_ = StartCode1;
@@ -218,7 +218,7 @@ bool WvmMediaParser::Parse(const uint8_t* buf, int size) {
         }
         continue;
       case SystemHeaderSkip:
-        if ((end - read_ptr) >= (int32_t)skip_bytes_) {
+        if ((end - read_ptr) >= skip_bytes_) {
           read_ptr += skip_bytes_;
           skip_bytes_ = 0;
           parse_state_ = StartCode1;
@@ -895,8 +895,8 @@ bool WvmMediaParser::Output(bool output_encrypted_sample) {
     } else if ((prev_pes_stream_id_ & kPesStreamIdAudioMask) ==
         kPesStreamIdAudio) {
       // Set data on the audio stream.
-      int frame_size = mp2t::AdtsHeader::GetAdtsFrameSize(sample_data_.data(),
+      int frame_size = static_cast<int>(mp2t::AdtsHeader::GetAdtsFrameSize(
-                                                          kAdtsHeaderMinSize);
+          sample_data_.data(), kAdtsHeaderMinSize));
       mp2t::AdtsHeader adts_header;
       const uint8_t* frame_ptr = sample_data_.data();
       if (!adts_header.Parse(frame_ptr, frame_size)) {

packager/media/formats/wvm/wvm_media_parser.h

@@ -228,17 +228,17 @@ class WvmMediaParser : public MediaParser {
   uint8_t current_program_id_;
   uint32_t pes_stream_id_;
   uint32_t prev_pes_stream_id_;
-  uint16_t pes_packet_bytes_;
+  size_t pes_packet_bytes_;
   uint8_t pes_flags_1_;
   uint8_t pes_flags_2_;
   uint8_t prev_pes_flags_1_;
-  uint8_t pes_header_data_bytes_;
+  size_t pes_header_data_bytes_;
   uint64_t timestamp_;
   uint64_t pts_;
   uint64_t dts_;
   uint8_t index_program_id_;
   scoped_refptr<MediaSample> media_sample_;
-  uint32_t crypto_unit_start_pos_;
+  size_t crypto_unit_start_pos_;
   PrevSampleData prev_media_sample_data_;
   H264ByteToUnitStreamConverter byte_to_unit_stream_converter_;
 

packager/media/formats/wvm/wvm_media_parser_unittest.cc

@@ -151,7 +151,7 @@ class WvmMediaParserTest : public testing::Test {
     InitializeParser();
 
     std::vector<uint8_t> buffer = ReadTestDataFile(filename);
-    EXPECT_TRUE(parser_->Parse(buffer.data(), buffer.size()));
+    EXPECT_TRUE(parser_->Parse(buffer.data(), static_cast<int>(buffer.size())));
   }
 };
 
@@ -159,7 +159,7 @@ TEST_F(WvmMediaParserTest, ParseWvmWithoutKeySource) {
   key_source_.reset();
   InitializeParser();
   std::vector<uint8_t> buffer = ReadTestDataFile(kWvmFile);
-  EXPECT_TRUE(parser_->Parse(buffer.data(), buffer.size()));
+  EXPECT_TRUE(parser_->Parse(buffer.data(), static_cast<int>(buffer.size())));
   EXPECT_EQ(kExpectedStreams, stream_map_.size());
   EXPECT_EQ(kExpectedVideoFrameCount, video_frame_count_);
   EXPECT_EQ(kExpectedAudioFrameCount, audio_frame_count_);

packager/media/test/packager_test.cc

@@ -440,7 +440,7 @@ TEST_P(PackagerTest, MP4MuxerMultiSegmentsUnencryptedVideo) {
     std::string segment_content;
     ASSERT_TRUE(base::ReadFileToString(segment_path, &segment_content));
     EXPECT_TRUE(base::AppendToFile(output_path, segment_content.data(),
-                                   segment_content.size()));
+                                   static_cast<int>(segment_content.size())));
 
     ++segment_index;
   }

packager/third_party/curl/curl.gyp

@@ -94,6 +94,7 @@
           'defines': [
             'BUILDING_LIBCURL',
           ],
+          'msvs_disabled_warnings': [ 4267, ],
         }],
       ],
       'variables': {