1 /*
2 * Copyright (C) 2019 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 "NativeMuxer"
19
20 #include <jni.h>
21 #include <fstream>
22 #include <memory>
23 #include <string>
24 #include <sys/stat.h>
25
26 #include "Muxer.h"
27
28 MUXER_OUTPUT_T getMuxerOutFormat(const char *fmt);
29
Java_com_android_media_benchmark_library_Native_Mux(JNIEnv * env,jobject thiz,jstring jInputFilePath,jstring jInputFileName,jstring jOutputFilePath,jstring jStatsFile,jstring jFormat)30 extern "C" JNIEXPORT int32_t JNICALL Java_com_android_media_benchmark_library_Native_Mux(
31 JNIEnv *env, jobject thiz, jstring jInputFilePath, jstring jInputFileName,
32 jstring jOutputFilePath, jstring jStatsFile, jstring jFormat) {
33 UNUSED(thiz);
34 ALOGV("Mux the samples given by extractor");
35 const char *inputFilePath = env->GetStringUTFChars(jInputFilePath, nullptr);
36 const char *inputFileName = env->GetStringUTFChars(jInputFileName, nullptr);
37 string sInputFile = string(inputFilePath) + string(inputFileName);
38 FILE *inputFp = fopen(sInputFile.c_str(), "rb");
39 if (!inputFp) {
40 ALOGE("Unable to open input file for reading");
41 return -1;
42 }
43
44 const char *fmt = env->GetStringUTFChars(jFormat, nullptr);
45 MUXER_OUTPUT_T outputFormat = getMuxerOutFormat(fmt);
46 if (outputFormat == MUXER_OUTPUT_FORMAT_INVALID) {
47 ALOGE("output format is MUXER_OUTPUT_FORMAT_INVALID");
48 return MUXER_OUTPUT_FORMAT_INVALID;
49 }
50
51 std::unique_ptr<Muxer> muxerObj(new (std::nothrow) Muxer());
52 Extractor *extractor = muxerObj->getExtractor();
53 if (!extractor) {
54 ALOGE("Extractor creation failed");
55 return -1;
56 }
57
58 // Read file properties
59 struct stat buf;
60 stat(sInputFile.c_str(), &buf);
61 size_t fileSize = buf.st_size;
62 int32_t fd = fileno(inputFp);
63
64 int32_t trackCount = extractor->initExtractor(fd, fileSize);
65 if (trackCount <= 0) {
66 ALOGE("initExtractor failed");
67 return -1;
68 }
69
70 for (int curTrack = 0; curTrack < trackCount; curTrack++) {
71 int32_t status = extractor->setupTrackFormat(curTrack);
72 if (status != 0) {
73 ALOGE("Track Format invalid");
74 return -1;
75 }
76
77 uint8_t *inputBuffer = (uint8_t *) malloc(fileSize);
78 if (!inputBuffer) {
79 ALOGE("Allocation Failed");
80 return -1;
81 }
82 vector<AMediaCodecBufferInfo> frameInfos;
83 AMediaCodecBufferInfo info;
84 uint32_t inputBufferOffset = 0;
85
86 // Get Frame Data
87 while (1) {
88 status = extractor->getFrameSample(info);
89 if (status || !info.size) break;
90 // copy the meta data and buffer to be passed to muxer
91 if (inputBufferOffset + info.size > fileSize) {
92 ALOGE("Memory allocated not sufficient");
93 if (inputBuffer) {
94 free(inputBuffer);
95 inputBuffer = nullptr;
96 }
97 return -1;
98 }
99 memcpy(inputBuffer + inputBufferOffset, extractor->getFrameBuf(),
100 static_cast<size_t>(info.size));
101 info.offset = inputBufferOffset;
102 frameInfos.push_back(info);
103 inputBufferOffset += info.size;
104 }
105
106 const char *outputFilePath = env->GetStringUTFChars(jOutputFilePath, nullptr);
107 FILE *outputFp = fopen(((string) outputFilePath).c_str(), "w+b");
108 env->ReleaseStringUTFChars(jOutputFilePath, outputFilePath);
109
110 if (!outputFp) {
111 ALOGE("Unable to open output file for writing");
112 if (inputBuffer) {
113 free(inputBuffer);
114 inputBuffer = nullptr;
115 }
116 return -1;
117 }
118 int32_t outFd = fileno(outputFp);
119
120 status = muxerObj->initMuxer(outFd, (MUXER_OUTPUT_T) outputFormat);
121 if (status != 0) {
122 ALOGE("initMuxer failed");
123 if (inputBuffer) {
124 free(inputBuffer);
125 inputBuffer = nullptr;
126 }
127 return -1;
128 }
129
130 status = muxerObj->mux(inputBuffer, frameInfos);
131 if (status != 0) {
132 ALOGE("Mux failed");
133 if (inputBuffer) {
134 free(inputBuffer);
135 inputBuffer = nullptr;
136 }
137 return -1;
138 }
139 muxerObj->deInitMuxer();
140 const char *statsFile = env->GetStringUTFChars(jStatsFile, nullptr);
141 string muxFormat(fmt);
142 muxerObj->dumpStatistics(string(inputFileName), muxFormat, statsFile);
143 env->ReleaseStringUTFChars(jStatsFile, statsFile);
144 env->ReleaseStringUTFChars(jInputFilePath, inputFilePath);
145 env->ReleaseStringUTFChars(jInputFileName, inputFileName);
146
147 if (inputBuffer) {
148 free(inputBuffer);
149 inputBuffer = nullptr;
150 }
151 if (outputFp) {
152 fclose(outputFp);
153 outputFp = nullptr;
154 }
155 muxerObj->resetMuxer();
156 }
157 if (inputFp) {
158 fclose(inputFp);
159 inputFp = nullptr;
160 }
161 env->ReleaseStringUTFChars(jFormat, fmt);
162 extractor->deInitExtractor();
163
164 return 0;
165 }
166
getMuxerOutFormat(const char * fmt)167 MUXER_OUTPUT_T getMuxerOutFormat(const char *fmt) {
168 static const struct {
169 const char *name;
170 int value;
171 } kFormatMaps[] = {{"mp4", MUXER_OUTPUT_FORMAT_MPEG_4},
172 {"webm", MUXER_OUTPUT_FORMAT_WEBM},
173 {"3gpp", MUXER_OUTPUT_FORMAT_3GPP},
174 {"ogg", MUXER_OUTPUT_FORMAT_OGG}};
175
176 int32_t muxOutputFormat = MUXER_OUTPUT_FORMAT_INVALID;
177 for (auto kFormatMap : kFormatMaps) {
178 if (!strcmp(fmt, kFormatMap.name)) {
179 muxOutputFormat = kFormatMap.value;
180 break;
181 }
182 }
183 return (MUXER_OUTPUT_T) muxOutputFormat;
184 }
185