1 /*
2 * Copyright (C) 2021 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 //#define LOG_NDEBUG 0
18 #define LOG_TAG "ManageShapingCodecs"
19 #include <utils/Log.h>
20
21 #include <mutex>
22 #include <string>
23 #include <inttypes.h>
24
25 #include <media/NdkMediaFormat.h>
26
27 #include "CodecProperties.h"
28
29 namespace android {
30 namespace mediaformatshaper {
31
32 // manage the list of codec information.
33 //
34 // XXX: the mutex here is too heavy; rework that.
35 //
36
37 static std::mutex sCodecMutex;
38 static std::map<std::string, CodecProperties*> sCodecTraits;
39
findCodec(const char * codecName,const char * mediaType)40 CodecProperties *findCodec(const char *codecName, const char *mediaType) {
41 CodecProperties *codec = nullptr;
42
43 // synthesize a name from both codecName + mediaType
44 // some codecs support multiple media types and may have different capabilities
45 // for each media type
46 //
47 std::string codecKey = codecName;
48 codecKey += "-";
49 codecKey += mediaType;
50
51 std::lock_guard _l(sCodecMutex);
52
53 auto it = sCodecTraits.find(codecKey);
54 if (it != sCodecTraits.end()) {
55 codec = it->second;
56 }
57
58 return codec;
59 }
60
registerCodec(CodecProperties * codec,const char * codecName,const char * mediaType)61 CodecProperties *registerCodec(CodecProperties *codec, const char *codecName,
62 const char *mediaType) {
63
64 CodecProperties *registeredCodec = nullptr;
65
66 if (codec->isRegistered()) {
67 return nullptr;
68 }
69
70 // synthesize a name from both codecName + mediaType
71 // some codecs support multiple media types and may have different capabilities
72 // for each media type
73 //
74 std::string codecKey = codecName;
75 codecKey += "-";
76 codecKey += mediaType;
77
78 std::lock_guard _l(sCodecMutex);
79
80 auto it = sCodecTraits.find(codecKey);
81 if (it != sCodecTraits.end()) {
82 registeredCodec = it->second;
83 }
84
85 if (registeredCodec == nullptr) {
86 // register the one that was passed to us
87 ALOGV("Creating entry for codec %s, mediaType %s, key %s", codecName, mediaType,
88 codecKey.c_str());
89 sCodecTraits.insert({codecKey, codec});
90 registeredCodec = codec;
91 codec->setRegistered(true);
92 } else {
93 // one has already been registered, use that
94 // and discard the candidate
95 delete codec;
96 codec = nullptr;
97 }
98
99 return registeredCodec;
100 }
101
102 } // namespace mediaformatshaper
103 } // namespace android
104
105