text: /*
   *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
   *
   *  Use of this source code is governed by a BSD-style license
   *  that can be found in the LICENSE file in the root of the source
   *  tree. An additional intellectual property rights grant can be found
   *  in the file PATENTS.  All contributing project authors may
   *  be found in the AUTHORS file in the root of the source tree.
   */
  
  #include "modules/video_coding/h264_sprop_parameter_sets.h"
  
  #include <string>
  #include <vector>
  
  #include "rtc_base/base64.h"
  #include "rtc_base/basictypes.h"
  #include "rtc_base/logging.h"
  
  namespace {
  
  bool DecodeAndConvert(const std::string& base64, std::vector<uint8_t>* binary) {
    return rtc::Base64::DecodeFromArray(base64.data(), base64.size(),
                                        rtc::Base64::DO_STRICT, binary, nullptr);
  }
  }  // namespace
  
  namespace webrtc {
  
  bool H264SpropParameterSets::DecodeSprop(const std::string& sprop) {
    size_t separator_pos = sprop.find(',');
    RTC_LOG(LS_INFO) << "Parsing sprop \"" << sprop << "\"";
    if ((separator_pos <= 0) || (separator_pos >= sprop.length() - 1)) {
      RTC_LOG(LS_WARNING) << "Invalid seperator position " << separator_pos
                          << " *" << sprop << "*";
      return false;
    }
    std::string sps_str = sprop.substr(0, separator_pos);
    std::string pps_str = sprop.substr(separator_pos + 1, std::string::npos);
    if (!DecodeAndConvert(sps_str, &sps_)) {
      RTC_LOG(LS_WARNING) << "Failed to decode sprop/sps *" << sprop << "*";
      return false;
    }
    if (!DecodeAndConvert(pps_str, &pps_)) {
      RTC_LOG(LS_WARNING) << "Failed to decode sprop/pps *" << sprop << "*";
      return false;
    }
    return true;
  }
  
  }  // namespace webrtc
  