h264_sprop_parameter_sets.cc (1783B)
1 /* 2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #include "modules/video_coding/h264_sprop_parameter_sets.h" 12 13 #include <cstddef> 14 #include <cstdint> 15 #include <optional> 16 #include <string> 17 #include <vector> 18 19 #include "rtc_base/base64.h" 20 #include "rtc_base/logging.h" 21 22 namespace webrtc { 23 24 namespace { 25 26 bool DecodeAndConvert(const std::string& base64, std::vector<uint8_t>* binary) { 27 std::optional<std::string> decoded = Base64Decode(base64); 28 if (!decoded.has_value()) { 29 return false; 30 } 31 binary->assign(decoded->begin(), decoded->end()); 32 return true; 33 } 34 35 } // namespace 36 37 bool H264SpropParameterSets::DecodeSprop(const std::string& sprop) { 38 size_t separator_pos = sprop.find(','); 39 RTC_LOG(LS_INFO) << "Parsing sprop \"" << sprop << "\""; 40 if ((separator_pos <= 0) || (separator_pos >= sprop.length() - 1)) { 41 RTC_LOG(LS_WARNING) << "Invalid seperator position " << separator_pos 42 << " *" << sprop << "*"; 43 return false; 44 } 45 std::string sps_str = sprop.substr(0, separator_pos); 46 std::string pps_str = sprop.substr(separator_pos + 1, std::string::npos); 47 if (!DecodeAndConvert(sps_str, &sps_)) { 48 RTC_LOG(LS_WARNING) << "Failed to decode sprop/sps *" << sprop << "*"; 49 return false; 50 } 51 if (!DecodeAndConvert(pps_str, &pps_)) { 52 RTC_LOG(LS_WARNING) << "Failed to decode sprop/pps *" << sprop << "*"; 53 return false; 54 } 55 return true; 56 } 57 58 } // namespace webrtc