Adding upstream version 115.7.0esr.upstream/115.7.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 203 insertions, 0 deletions

diff --git a/third_party/libwebrtc/call/rtp_config.cc b/third_party/libwebrtc/call/rtp_config.cc
new file mode 100644
index 0000000000..5457a94696
--- /dev/null
+++ b/third_party/libwebrtc/call/rtp_config.cc
@@ -0,0 +1,203 @@
+/*
+ *  Copyright (c) 2017 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 "call/rtp_config.h"
+
+#include <cstdint>
+
+#include "absl/algorithm/container.h"
+#include "api/array_view.h"
+#include "rtc_base/checks.h"
+#include "rtc_base/strings/string_builder.h"
+
+namespace webrtc {
+
+namespace {
+
+uint32_t FindAssociatedSsrc(uint32_t ssrc,
+                            const std::vector<uint32_t>& ssrcs,
+                            const std::vector<uint32_t>& associated_ssrcs) {
+  RTC_DCHECK_EQ(ssrcs.size(), associated_ssrcs.size());
+  for (size_t i = 0; i < ssrcs.size(); ++i) {
+    if (ssrcs[i] == ssrc)
+      return associated_ssrcs[i];
+  }
+  RTC_DCHECK_NOTREACHED();
+  return 0;
+}
+
+}  // namespace
+
+std::string LntfConfig::ToString() const {
+  return enabled ? "{enabled: true}" : "{enabled: false}";
+}
+
+std::string NackConfig::ToString() const {
+  char buf[1024];
+  rtc::SimpleStringBuilder ss(buf);
+  ss << "{rtp_history_ms: " << rtp_history_ms;
+  ss << '}';
+  return ss.str();
+}
+
+std::string UlpfecConfig::ToString() const {
+  char buf[1024];
+  rtc::SimpleStringBuilder ss(buf);
+  ss << "{ulpfec_payload_type: " << ulpfec_payload_type;
+  ss << ", red_payload_type: " << red_payload_type;
+  ss << ", red_rtx_payload_type: " << red_rtx_payload_type;
+  ss << '}';
+  return ss.str();
+}
+
+bool UlpfecConfig::operator==(const UlpfecConfig& other) const {
+  return ulpfec_payload_type == other.ulpfec_payload_type &&
+         red_payload_type == other.red_payload_type &&
+         red_rtx_payload_type == other.red_rtx_payload_type;
+}
+
+RtpConfig::RtpConfig() = default;
+RtpConfig::RtpConfig(const RtpConfig&) = default;
+RtpConfig::~RtpConfig() = default;
+
+RtpConfig::Flexfec::Flexfec() = default;
+RtpConfig::Flexfec::Flexfec(const Flexfec&) = default;
+RtpConfig::Flexfec::~Flexfec() = default;
+
+std::string RtpConfig::ToString() const {
+  char buf[2 * 1024];
+  rtc::SimpleStringBuilder ss(buf);
+  ss << "{ssrcs: [";
+  for (size_t i = 0; i < ssrcs.size(); ++i) {
+    ss << ssrcs[i];
+    if (i != ssrcs.size() - 1)
+      ss << ", ";
+  }
+  ss << "], rids: [";
+  for (size_t i = 0; i < rids.size(); ++i) {
+    ss << rids[i];
+    if (i != rids.size() - 1)
+      ss << ", ";
+  }
+  ss << "], mid: '" << mid << "'";
+  ss << ", rtcp_mode: "
+     << (rtcp_mode == RtcpMode::kCompound ? "RtcpMode::kCompound"
+                                          : "RtcpMode::kReducedSize");
+  ss << ", max_packet_size: " << max_packet_size;
+  ss << ", extmap-allow-mixed: " << (extmap_allow_mixed ? "true" : "false");
+  ss << ", extensions: [";
+  for (size_t i = 0; i < extensions.size(); ++i) {
+    ss << extensions[i].ToString();
+    if (i != extensions.size() - 1)
+      ss << ", ";
+  }
+  ss << ']';
+
+  ss << ", lntf: " << lntf.ToString();
+  ss << ", nack: {rtp_history_ms: " << nack.rtp_history_ms << '}';
+  ss << ", ulpfec: " << ulpfec.ToString();
+  ss << ", payload_name: " << payload_name;
+  ss << ", payload_type: " << payload_type;
+  ss << ", raw_payload: " << (raw_payload ? "true" : "false");
+
+  ss << ", flexfec: {payload_type: " << flexfec.payload_type;
+  ss << ", ssrc: " << flexfec.ssrc;
+  ss << ", protected_media_ssrcs: [";
+  for (size_t i = 0; i < flexfec.protected_media_ssrcs.size(); ++i) {
+    ss << flexfec.protected_media_ssrcs[i];
+    if (i != flexfec.protected_media_ssrcs.size() - 1)
+      ss << ", ";
+  }
+  ss << "]}";
+
+  ss << ", rtx: " << rtx.ToString();
+  ss << ", c_name: " << c_name;
+  ss << '}';
+  return ss.str();
+}
+
+RtpConfig::Rtx::Rtx() = default;
+RtpConfig::Rtx::Rtx(const Rtx&) = default;
+RtpConfig::Rtx::~Rtx() = default;
+
+std::string RtpConfig::Rtx::ToString() const {
+  char buf[1024];
+  rtc::SimpleStringBuilder ss(buf);
+  ss << "{ssrcs: [";
+  for (size_t i = 0; i < ssrcs.size(); ++i) {
+    ss << ssrcs[i];
+    if (i != ssrcs.size() - 1)
+      ss << ", ";
+  }
+  ss << ']';
+
+  ss << ", payload_type: " << payload_type;
+  ss << '}';
+  return ss.str();
+}
+
+bool RtpConfig::IsMediaSsrc(uint32_t ssrc) const {
+  return absl::c_linear_search(ssrcs, ssrc);
+}
+
+bool RtpConfig::IsRtxSsrc(uint32_t ssrc) const {
+  return absl::c_linear_search(rtx.ssrcs, ssrc);
+}
+
+bool RtpConfig::IsFlexfecSsrc(uint32_t ssrc) const {
+  return flexfec.payload_type != -1 && ssrc == flexfec.ssrc;
+}
+
+absl::optional<uint32_t> RtpConfig::GetRtxSsrcAssociatedWithMediaSsrc(
+    uint32_t media_ssrc) const {
+  RTC_DCHECK(IsMediaSsrc(media_ssrc));
+  // If we don't use RTX there is no association.
+  if (rtx.ssrcs.empty())
+    return absl::nullopt;
+  // If we use RTX there MUST be an association ssrcs[i] <-> rtx.ssrcs[i].
+  RTC_DCHECK_EQ(ssrcs.size(), rtx.ssrcs.size());
+  return FindAssociatedSsrc(media_ssrc, ssrcs, rtx.ssrcs);
+}
+
+uint32_t RtpConfig::GetMediaSsrcAssociatedWithRtxSsrc(uint32_t rtx_ssrc) const {
+  RTC_DCHECK(IsRtxSsrc(rtx_ssrc));
+  // If we use RTX there MUST be an association ssrcs[i] <-> rtx.ssrcs[i].
+  RTC_DCHECK_EQ(ssrcs.size(), rtx.ssrcs.size());
+  return FindAssociatedSsrc(rtx_ssrc, rtx.ssrcs, ssrcs);
+}
+
+uint32_t RtpConfig::GetMediaSsrcAssociatedWithFlexfecSsrc(
+    uint32_t flexfec_ssrc) const {
+  RTC_DCHECK(IsFlexfecSsrc(flexfec_ssrc));
+  // If we use FlexFEC there MUST be an associated media ssrc.
+  //
+  // TODO(brandtr/hbos): The current implementation only supports an association
+  // with a single media ssrc. If multiple ssrcs are to be supported in the
+  // future, in order not to break GetStats()'s packet and byte counters, we
+  // must be able to tell how many packets and bytes have contributed to which
+  // SSRC.
+  RTC_DCHECK_EQ(1u, flexfec.protected_media_ssrcs.size());
+  uint32_t media_ssrc = flexfec.protected_media_ssrcs[0];
+  RTC_DCHECK(IsMediaSsrc(media_ssrc));
+  return media_ssrc;
+}
+
+absl::optional<std::string> RtpConfig::GetRidForSsrc(uint32_t ssrc) const {
+  auto it = std::find(ssrcs.begin(), ssrcs.end(), ssrc);
+  if (it != ssrcs.end()) {
+    size_t ssrc_index = std::distance(ssrcs.begin(), it);
+    if (ssrc_index < rids.size()) {
+      return rids[ssrc_index];
+    }
+  }
+  return absl::nullopt;
+}
+
+}  // namespace webrtc