ui/base/resource: Roll our own version of ReadBigEndian() function.

media/cast/rtcp/rtcp_sender.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/cast/rtcp/rtcp_sender.h"
 
 #include <algorithm>
 #include <vector>
 
+#include "base/big_endian.h"
 #include "base/logging.h"
 #include "media/cast/cast_environment.h"
 #include "media/cast/rtcp/rtcp_defines.h"
 #include "media/cast/rtcp/rtcp_utility.h"
 #include "media/cast/transport/cast_transport_defines.h"
 #include "media/cast/transport/pacing/paced_sender.h"
-#include "net/base/big_endian.h"
 
 namespace media {
 namespace cast {
 namespace {
 
 // Converts a log event type to an integer value.
 int ConvertEventTypeToWireFormat(const CastLoggingEvent& event) {
   switch (event) {
     case kAudioAckSent:
       return 1;
@@ skipping 159 matching lines @@
 
 void RtcpSender::BuildRR(const transport::RtcpReportBlock* report_block,
                          Packet* packet) const {
   size_t start_size = packet->size();
   DCHECK_LT(start_size + 32, kMaxIpPacketSize) << "Not enough buffer space";
   if (start_size + 32 > kMaxIpPacketSize) return;
 
   uint16 number_of_rows = (report_block) ? 7 : 1;
   packet->resize(start_size + 8);
 
-  net::BigEndianWriter big_endian_writer(&((*packet)[start_size]), 8);
+  base::BigEndianWriter big_endian_writer(
+      reinterpret_cast<char*>(&((*packet)[start_size])), 8);
   big_endian_writer.WriteU8(0x80 + (report_block ? 1 : 0));
   big_endian_writer.WriteU8(transport::kPacketTypeReceiverReport);
   big_endian_writer.WriteU16(number_of_rows);
   big_endian_writer.WriteU32(ssrc_);
 
   if (report_block) {
     AddReportBlocks(*report_block, packet);  // Adds 24 bytes.
   }
 }
 
 void RtcpSender::AddReportBlocks(const transport::RtcpReportBlock& report_block,
                                  Packet* packet) const {
   size_t start_size = packet->size();
   DCHECK_LT(start_size + 24, kMaxIpPacketSize) << "Not enough buffer space";
   if (start_size + 24 > kMaxIpPacketSize) return;
 
   packet->resize(start_size + 24);
 
-  net::BigEndianWriter big_endian_writer(&((*packet)[start_size]), 24);
+  base::BigEndianWriter big_endian_writer(
+      reinterpret_cast<char*>(&((*packet)[start_size])), 24);
   big_endian_writer.WriteU32(report_block.media_ssrc);
   big_endian_writer.WriteU8(report_block.fraction_lost);
   big_endian_writer.WriteU8(report_block.cumulative_lost >> 16);
   big_endian_writer.WriteU8(report_block.cumulative_lost >> 8);
   big_endian_writer.WriteU8(report_block.cumulative_lost);
 
   // Extended highest seq_no, contain the highest sequence number received.
   big_endian_writer.WriteU32(report_block.extended_high_sequence_number);
   big_endian_writer.WriteU32(report_block.jitter);
 
   // Last SR timestamp; our NTP time when we received the last report.
   // This is the value that we read from the send report packet not when we
   // received it.
   big_endian_writer.WriteU32(report_block.last_sr);
 
   // Delay since last received report, time since we received the report.
   big_endian_writer.WriteU32(report_block.delay_since_last_sr);
 }
 
 void RtcpSender::BuildSdec(Packet* packet) const {
   size_t start_size = packet->size();
   DCHECK_LT(start_size + 12 + c_name_.length(), kMaxIpPacketSize)
       << "Not enough buffer space";
   if (start_size + 12 > kMaxIpPacketSize) return;
 
   // SDES Source Description.
   packet->resize(start_size + 10);
 
-  net::BigEndianWriter big_endian_writer(&((*packet)[start_size]), 10);
+  base::BigEndianWriter big_endian_writer(
+      reinterpret_cast<char*>(&((*packet)[start_size])), 10);
   // We always need to add one SDES CNAME.
   big_endian_writer.WriteU8(0x80 + 1);
   big_endian_writer.WriteU8(transport::kPacketTypeSdes);
 
   // Handle SDES length later on.
   uint32 sdes_length_position = static_cast<uint32>(start_size) + 3;
   big_endian_writer.WriteU16(0);
   big_endian_writer.WriteU32(ssrc_);  // Add our own SSRC.
   big_endian_writer.WriteU8(1);       // CNAME = 1
   big_endian_writer.WriteU8(static_cast<uint8>(c_name_.length()));
@@ skipping 20 matching lines @@
   (*packet)[sdes_length_position] = buffer_length;
 }
 
 void RtcpSender::BuildPli(uint32 remote_ssrc, Packet* packet) const {
   size_t start_size = packet->size();
   DCHECK_LT(start_size + 12, kMaxIpPacketSize) << "Not enough buffer space";
   if (start_size + 12 > kMaxIpPacketSize) return;
 
   packet->resize(start_size + 12);
 
-  net::BigEndianWriter big_endian_writer(&((*packet)[start_size]), 12);
+  base::BigEndianWriter big_endian_writer(
+      reinterpret_cast<char*>(&((*packet)[start_size])), 12);
   uint8 FMT = 1;  // Picture loss indicator.
   big_endian_writer.WriteU8(0x80 + FMT);
   big_endian_writer.WriteU8(transport::kPacketTypePayloadSpecific);
   big_endian_writer.WriteU16(2);            // Used fixed length of 2.
   big_endian_writer.WriteU32(ssrc_);        // Add our own SSRC.
   big_endian_writer.WriteU32(remote_ssrc);  // Add the remote SSRC.
 }
 
 /*
     0                   1                   2                   3
     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    |      PB       |0| Payload Type|    Native Rpsi bit string     |
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    |   defined per codec          ...                | Padding (0) |
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 */
 void RtcpSender::BuildRpsi(const RtcpRpsiMessage* rpsi, Packet* packet) const {
   size_t start_size = packet->size();
   DCHECK_LT(start_size + 24, kMaxIpPacketSize) << "Not enough buffer space";
   if (start_size + 24 > kMaxIpPacketSize) return;
 
   packet->resize(start_size + 24);
 
-  net::BigEndianWriter big_endian_writer(&((*packet)[start_size]), 24);
+  base::BigEndianWriter big_endian_writer(
+      reinterpret_cast<char*>(&((*packet)[start_size])), 24);
   uint8 FMT = 3;  // Reference Picture Selection Indication.
   big_endian_writer.WriteU8(0x80 + FMT);
   big_endian_writer.WriteU8(transport::kPacketTypePayloadSpecific);
 
   // Calculate length.
   uint32 bits_required = 7;
   uint8 bytes_required = 1;
   while ((rpsi->picture_id >> bits_required) > 0) {
     bits_required += 7;
     bytes_required++;
@@ skipping 33 matching lines @@
 
 void RtcpSender::BuildRemb(const RtcpRembMessage* remb, Packet* packet) const {
   size_t start_size = packet->size();
   size_t remb_size = 20 + 4 * remb->remb_ssrcs.size();
   DCHECK_LT(start_size + remb_size, kMaxIpPacketSize)
       << "Not enough buffer space";
   if (start_size + remb_size > kMaxIpPacketSize) return;
 
   packet->resize(start_size + remb_size);
 
-  net::BigEndianWriter big_endian_writer(&((*packet)[start_size]), remb_size);
+  base::BigEndianWriter big_endian_writer(
+      reinterpret_cast<char*>(&((*packet)[start_size])), remb_size);
 
   // Add application layer feedback.
   uint8 FMT = 15;
   big_endian_writer.WriteU8(0x80 + FMT);
   big_endian_writer.WriteU8(transport::kPacketTypePayloadSpecific);
   big_endian_writer.WriteU8(0);
   big_endian_writer.WriteU8(static_cast<uint8>(remb->remb_ssrcs.size() + 4));
   big_endian_writer.WriteU32(ssrc_);  // Add our own SSRC.
   big_endian_writer.WriteU32(0);      // Remote SSRC must be 0.
   big_endian_writer.WriteU32(kRemb);
@@ skipping 19 matching lines @@
                                                    remb->remb_bitrate);
 }
 
 void RtcpSender::BuildNack(const RtcpNackMessage* nack, Packet* packet) const {
   size_t start_size = packet->size();
   DCHECK_LT(start_size + 16, kMaxIpPacketSize) << "Not enough buffer space";
   if (start_size + 16 > kMaxIpPacketSize) return;
 
   packet->resize(start_size + 16);
 
-  net::BigEndianWriter big_endian_writer(&((*packet)[start_size]), 16);
+  base::BigEndianWriter big_endian_writer(
+      reinterpret_cast<char*>(&((*packet)[start_size])), 16);
 
   uint8 FMT = 1;
   big_endian_writer.WriteU8(0x80 + FMT);
   big_endian_writer.WriteU8(transport::kPacketTypeGenericRtpFeedback);
   big_endian_writer.WriteU8(0);
   size_t nack_size_pos = start_size + 3;
   big_endian_writer.WriteU8(3);
   big_endian_writer.WriteU32(ssrc_);              // Add our own SSRC.
   big_endian_writer.WriteU32(nack->remote_ssrc);  // Add the remote SSRC.
 
@@ skipping 17 matching lines @@
       } else {
         break;
       }
     }
     // Write the sequence number and the bitmask to the packet.
     start_size = packet->size();
     DCHECK_LT(start_size + 4, kMaxIpPacketSize) << "Not enough buffer space";
     if (start_size + 4 > kMaxIpPacketSize) return;
 
     packet->resize(start_size + 4);
-    net::BigEndianWriter big_endian_nack_writer(&((*packet)[start_size]), 4);
+    base::BigEndianWriter big_endian_nack_writer(
+        reinterpret_cast<char*>(&((*packet)[start_size])), 4);
     big_endian_nack_writer.WriteU16(nack_sequence_number);
     big_endian_nack_writer.WriteU16(bitmask);
     number_of_nack_fields++;
   }
   DCHECK_GE(kRtcpMaxNackFields, number_of_nack_fields);
   (*packet)[nack_size_pos] = static_cast<uint8>(2 + number_of_nack_fields);
 }
 
 void RtcpSender::BuildBye(Packet* packet) const {
   size_t start_size = packet->size();
   DCHECK_LT(start_size + 8, kMaxIpPacketSize) << "Not enough buffer space";
   if (start_size + 8 > kMaxIpPacketSize) return;
 
   packet->resize(start_size + 8);
 
-  net::BigEndianWriter big_endian_writer(&((*packet)[start_size]), 8);
+  base::BigEndianWriter big_endian_writer(
+      reinterpret_cast<char*>(&((*packet)[start_size])), 8);
   big_endian_writer.WriteU8(0x80 + 1);
   big_endian_writer.WriteU8(transport::kPacketTypeBye);
   big_endian_writer.WriteU16(1);      // Length.
   big_endian_writer.WriteU32(ssrc_);  // Add our own SSRC.
 }
 
 void RtcpSender::BuildRrtr(const RtcpReceiverReferenceTimeReport* rrtr,
                            Packet* packet) const {
   size_t start_size = packet->size();
   DCHECK_LT(start_size + 20, kMaxIpPacketSize) << "Not enough buffer space";
   if (start_size + 20 > kMaxIpPacketSize) return;
 
   packet->resize(start_size + 20);
 
-  net::BigEndianWriter big_endian_writer(&((*packet)[start_size]), 20);
+  base::BigEndianWriter big_endian_writer(
+      reinterpret_cast<char*>(&((*packet)[start_size])), 20);
 
   big_endian_writer.WriteU8(0x80);
   big_endian_writer.WriteU8(transport::kPacketTypeXr);
   big_endian_writer.WriteU16(4);      // Length.
   big_endian_writer.WriteU32(ssrc_);  // Add our own SSRC.
   big_endian_writer.WriteU8(4);       // Add block type.
   big_endian_writer.WriteU8(0);       // Add reserved.
   big_endian_writer.WriteU16(2);      // Block length.
 
   // Add the media (received RTP) SSRC.
   big_endian_writer.WriteU32(rrtr->ntp_seconds);
   big_endian_writer.WriteU32(rrtr->ntp_fraction);
 }
 
 void RtcpSender::BuildCast(const RtcpCastMessage* cast, Packet* packet) const {
   size_t start_size = packet->size();
   DCHECK_LT(start_size + 20, kMaxIpPacketSize) << "Not enough buffer space";
   if (start_size + 20 > kMaxIpPacketSize) return;
 
   packet->resize(start_size + 20);
 
-  net::BigEndianWriter big_endian_writer(&((*packet)[start_size]), 20);
+  base::BigEndianWriter big_endian_writer(
+      reinterpret_cast<char*>(&((*packet)[start_size])), 20);
   uint8 FMT = 15;  // Application layer feedback.
   big_endian_writer.WriteU8(0x80 + FMT);
   big_endian_writer.WriteU8(transport::kPacketTypePayloadSpecific);
   big_endian_writer.WriteU8(0);
   size_t cast_size_pos = start_size + 3;  // Save length position.
   big_endian_writer.WriteU8(4);
   big_endian_writer.WriteU32(ssrc_);              // Add our own SSRC.
   big_endian_writer.WriteU32(cast->media_ssrc_);  // Remote SSRC.
   big_endian_writer.WriteU32(kCast);
   big_endian_writer.WriteU8(static_cast<uint8>(cast->ack_frame_id_));
@@ skipping 10 matching lines @@
       cast->missing_frames_and_packets_.begin();
 
   for (; frame_it != cast->missing_frames_and_packets_.end() &&
              number_of_loss_fields < max_number_of_loss_fields;
        ++frame_it) {
     // Iterate through all frames with missing packets.
     if (frame_it->second.empty()) {
       // Special case all packets in a frame is missing.
       start_size = packet->size();
       packet->resize(start_size + 4);
-      net::BigEndianWriter big_endian_nack_writer(&((*packet)[start_size]), 4);
+      base::BigEndianWriter big_endian_nack_writer(
+          reinterpret_cast<char*>(&((*packet)[start_size])), 4);
       big_endian_nack_writer.WriteU8(static_cast<uint8>(frame_it->first));
       big_endian_nack_writer.WriteU16(kRtcpCastAllPacketsLost);
       big_endian_nack_writer.WriteU8(0);
       ++number_of_loss_fields;
     } else {
       PacketIdSet::const_iterator packet_it = frame_it->second.begin();
       while (packet_it != frame_it->second.end()) {
         uint16 packet_id = *packet_it;
 
         start_size = packet->size();
         packet->resize(start_size + 4);
-        net::BigEndianWriter big_endian_nack_writer(&((*packet)[start_size]),
-                                                    4);
+        base::BigEndianWriter big_endian_nack_writer(
+            reinterpret_cast<char*>(&((*packet)[start_size])), 4);
 
         // Write frame and packet id to buffer before calculating bitmask.
         big_endian_nack_writer.WriteU8(static_cast<uint8>(frame_it->first));
         big_endian_nack_writer.WriteU16(packet_id);
 
         uint8 bitmask = 0;
         ++packet_it;
         while (packet_it != frame_it->second.end()) {
           int shift = static_cast<uint8>(*packet_it - packet_id) - 1;
           if (shift >= 0 && shift <= 7) {
@@ skipping 25 matching lines @@
   if (!BuildRtcpReceiverLogMessage(rtcp_events,
                                    packet_start_size,
                                    &receiver_log_message,
                                    &number_of_frames,
                                    &total_number_of_messages_to_send,
                                    &rtcp_log_size)) {
     return;
   }
   packet->resize(packet_start_size + rtcp_log_size);
 
-  net::BigEndianWriter big_endian_writer(&((*packet)[packet_start_size]),
-                                         rtcp_log_size);
+  base::BigEndianWriter big_endian_writer(
+      reinterpret_cast<char*>(&((*packet)[packet_start_size])), rtcp_log_size);
   big_endian_writer.WriteU8(0x80 + kReceiverLogSubtype);
   big_endian_writer.WriteU8(transport::kPacketTypeApplicationDefined);
   big_endian_writer.WriteU16(static_cast<uint16>(
       2 + 2 * number_of_frames + total_number_of_messages_to_send));
   big_endian_writer.WriteU32(ssrc_);  // Add our own SSRC.
   big_endian_writer.WriteU32(kCast);
 
   while (!receiver_log_message.empty() &&
          total_number_of_messages_to_send > 0) {
     RtcpReceiverFrameLogMessage& frame_log_messages(
@@ skipping 55 matching lines @@
     if (frame_log_messages.event_log_messages_.empty()) {
       // We sent all messages on this frame; pop the frame header.
       receiver_log_message.pop_front();
     }
   }
   DCHECK_EQ(total_number_of_messages_to_send, 0);
 }
 
 }  // namespace cast
 }  // namespace media