1 /*
2 * Copyright (C) 2024 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "src/traceconv/trace_unpack.h"
18
19 #include <iostream>
20 #include <iterator>
21 #include <memory>
22 #include <vector>
23
24 #include "perfetto/trace_processor/read_trace.h"
25 #include "src/traceconv/utils.h"
26
27 namespace perfetto {
28 namespace trace_to_text {
29
30 // Naive: puts multiple copies of the trace in memory, but good enough for
31 // manual workflows.
UnpackCompressedPackets(std::istream * input,std::ostream * output)32 bool UnpackCompressedPackets(std::istream* input, std::ostream* output) {
33 std::vector<char> packed(std::istreambuf_iterator<char>{*input},
34 std::istreambuf_iterator<char>{});
35 std::vector<uint8_t> unpacked;
36 auto status = trace_processor::DecompressTrace(
37 reinterpret_cast<uint8_t*>(packed.data()), packed.size(), &unpacked);
38 if (!status.ok())
39 return false;
40
41 TraceWriter trace_writer(output);
42 trace_writer.Write(reinterpret_cast<char*>(unpacked.data()), unpacked.size());
43 return true;
44 }
45
46 } // namespace trace_to_text
47 } // namespace perfetto
48