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 <stddef.h>
14 #include <stdint.h>
15
16 #include <string>
17 #include <vector>
18
19 #include "rtc_base/logging.h"
20 #include "rtc_base/third_party/base64/base64.h"
21
22 namespace {
23
DecodeAndConvert(const std::string & base64,std::vector<uint8_t> * binary)24 bool DecodeAndConvert(const std::string& base64, std::vector<uint8_t>* binary) {
25 return rtc::Base64::DecodeFromArray(base64.data(), base64.size(),
26 rtc::Base64::DO_STRICT, binary, nullptr);
27 }
28 } // namespace
29
30 namespace webrtc {
31
DecodeSprop(const std::string & sprop)32 bool H264SpropParameterSets::DecodeSprop(const std::string& sprop) {
33 size_t separator_pos = sprop.find(',');
34 RTC_LOG(LS_INFO) << "Parsing sprop \"" << sprop << "\"";
35 if ((separator_pos <= 0) || (separator_pos >= sprop.length() - 1)) {
36 RTC_LOG(LS_WARNING) << "Invalid seperator position " << separator_pos
37 << " *" << sprop << "*";
38 return false;
39 }
40 std::string sps_str = sprop.substr(0, separator_pos);
41 std::string pps_str = sprop.substr(separator_pos + 1, std::string::npos);
42 if (!DecodeAndConvert(sps_str, &sps_)) {
43 RTC_LOG(LS_WARNING) << "Failed to decode sprop/sps *" << sprop << "*";
44 return false;
45 }
46 if (!DecodeAndConvert(pps_str, &pps_)) {
47 RTC_LOG(LS_WARNING) << "Failed to decode sprop/pps *" << sprop << "*";
48 return false;
49 }
50 return true;
51 }
52
53 } // namespace webrtc
54