Built motion from commit 6a09e18b.|2.6.11

[motion2.git] / legacy-libs / grpc / deps / grpc / src / core / ext / transport / chttp2 / transport / varint.cc

diff --git a/legacy-libs/grpc/deps/grpc/src/core/ext/transport/chttp2/transport/varint.cc b/legacy-libs/grpc/deps/grpc/src/core/ext/transport/chttp2/transport/varint.cc
new file mode 100644 (file)
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--- /dev/null
+++ b/legacy-libs/grpc/deps/grpc/src/core/ext/transport/chttp2/transport/varint.cc
@@ -0,0 +1,56 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/chttp2/transport/varint.h"
+
+uint32_t grpc_chttp2_hpack_varint_length(uint32_t tail_value) {
+  if (tail_value < (1 << 7)) {
+    return 2;
+  } else if (tail_value < (1 << 14)) {
+    return 3;
+  } else if (tail_value < (1 << 21)) {
+    return 4;
+  } else if (tail_value < (1 << 28)) {
+    return 5;
+  } else {
+    return 6;
+  }
+}
+
+void grpc_chttp2_hpack_write_varint_tail(uint32_t tail_value, uint8_t* target,
+                                         uint32_t tail_length) {
+  switch (tail_length) {
+    case 5:
+      target[4] = static_cast<uint8_t>((tail_value >> 28) | 0x80);
+    /* fallthrough */
+    case 4:
+      target[3] = static_cast<uint8_t>((tail_value >> 21) | 0x80);
+    /* fallthrough */
+    case 3:
+      target[2] = static_cast<uint8_t>((tail_value >> 14) | 0x80);
+    /* fallthrough */
+    case 2:
+      target[1] = static_cast<uint8_t>((tail_value >> 7) | 0x80);
+    /* fallthrough */
+    case 1:
+      target[0] = static_cast<uint8_t>((tail_value) | 0x80);
+  }
+  target[tail_length - 1] &= 0x7f;
+}