1 /* 2 * Copyright 2013, 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 "MediaMuxer" 19 20 #include "webm/WebmWriter.h" 21 22 #include <utils/Log.h> 23 24 #include <media/stagefright/MediaMuxer.h> 25 26 #include <media/stagefright/foundation/ABuffer.h> 27 #include <media/stagefright/foundation/ADebug.h> 28 #include <media/stagefright/foundation/AMessage.h> 29 #include <media/stagefright/MediaAdapter.h> 30 #include <media/stagefright/MediaBuffer.h> 31 #include <media/stagefright/MediaCodec.h> 32 #include <media/stagefright/MediaDefs.h> 33 #include <media/stagefright/MediaErrors.h> 34 #include <media/stagefright/MediaSource.h> 35 #include <media/stagefright/MetaData.h> 36 #include <media/stagefright/MPEG4Writer.h> 37 #include <media/stagefright/Utils.h> 38 39 namespace android { 40 41 MediaMuxer::MediaMuxer(int fd, OutputFormat format) 42 : mFormat(format), 43 mState(UNINITIALIZED) { 44 if (format == OUTPUT_FORMAT_MPEG_4 || format == OUTPUT_FORMAT_THREE_GPP) { 45 mWriter = new MPEG4Writer(fd); 46 } else if (format == OUTPUT_FORMAT_WEBM) { 47 mWriter = new WebmWriter(fd); 48 } 49 50 if (mWriter != NULL) { 51 mFileMeta = new MetaData; 52 mState = INITIALIZED; 53 } 54 } 55 56 MediaMuxer::~MediaMuxer() { 57 Mutex::Autolock autoLock(mMuxerLock); 58 59 // Clean up all the internal resources. 60 mFileMeta.clear(); 61 mWriter.clear(); 62 mTrackList.clear(); 63 } 64 65 ssize_t MediaMuxer::addTrack(const sp<AMessage> &format) { 66 Mutex::Autolock autoLock(mMuxerLock); 67 68 if (format.get() == NULL) { 69 ALOGE("addTrack() get a null format"); 70 return -EINVAL; 71 } 72 73 if (mState != INITIALIZED) { 74 ALOGE("addTrack() must be called after constructor and before start()."); 75 return INVALID_OPERATION; 76 } 77 78 sp<MetaData> trackMeta = new MetaData; 79 convertMessageToMetaData(format, trackMeta); 80 81 sp<MediaAdapter> newTrack = new MediaAdapter(trackMeta); 82 status_t result = mWriter->addSource(newTrack); 83 if (result == OK) { 84 return mTrackList.add(newTrack); 85 } 86 return -1; 87 } 88 89 status_t MediaMuxer::setOrientationHint(int degrees) { 90 Mutex::Autolock autoLock(mMuxerLock); 91 if (mState != INITIALIZED) { 92 ALOGE("setOrientationHint() must be called before start()."); 93 return INVALID_OPERATION; 94 } 95 96 if (degrees != 0 && degrees != 90 && degrees != 180 && degrees != 270) { 97 ALOGE("setOrientationHint() get invalid degrees"); 98 return -EINVAL; 99 } 100 101 mFileMeta->setInt32(kKeyRotation, degrees); 102 return OK; 103 } 104 105 status_t MediaMuxer::setLocation(int latitude, int longitude) { 106 Mutex::Autolock autoLock(mMuxerLock); 107 if (mState != INITIALIZED) { 108 ALOGE("setLocation() must be called before start()."); 109 return INVALID_OPERATION; 110 } 111 if (mFormat != OUTPUT_FORMAT_MPEG_4 && mFormat != OUTPUT_FORMAT_THREE_GPP) { 112 ALOGE("setLocation() is only supported for .mp4 pr .3gp output."); 113 return INVALID_OPERATION; 114 } 115 116 ALOGV("Setting location: latitude = %d, longitude = %d", latitude, longitude); 117 return static_cast<MPEG4Writer*>(mWriter.get())->setGeoData(latitude, longitude); 118 } 119 120 status_t MediaMuxer::start() { 121 Mutex::Autolock autoLock(mMuxerLock); 122 if (mState == INITIALIZED) { 123 mState = STARTED; 124 mFileMeta->setInt32(kKeyRealTimeRecording, false); 125 return mWriter->start(mFileMeta.get()); 126 } else { 127 ALOGE("start() is called in invalid state %d", mState); 128 return INVALID_OPERATION; 129 } 130 } 131 132 status_t MediaMuxer::stop() { 133 Mutex::Autolock autoLock(mMuxerLock); 134 135 if (mState == STARTED) { 136 mState = STOPPED; 137 for (size_t i = 0; i < mTrackList.size(); i++) { 138 if (mTrackList[i]->stop() != OK) { 139 return INVALID_OPERATION; 140 } 141 } 142 return mWriter->stop(); 143 } else { 144 ALOGE("stop() is called in invalid state %d", mState); 145 return INVALID_OPERATION; 146 } 147 } 148 149 status_t MediaMuxer::writeSampleData(const sp<ABuffer> &buffer, size_t trackIndex, 150 int64_t timeUs, uint32_t flags) { 151 Mutex::Autolock autoLock(mMuxerLock); 152 153 if (buffer.get() == NULL) { 154 ALOGE("WriteSampleData() get an NULL buffer."); 155 return -EINVAL; 156 } 157 158 if (mState != STARTED) { 159 ALOGE("WriteSampleData() is called in invalid state %d", mState); 160 return INVALID_OPERATION; 161 } 162 163 if (trackIndex >= mTrackList.size()) { 164 ALOGE("WriteSampleData() get an invalid index %zu", trackIndex); 165 return -EINVAL; 166 } 167 168 MediaBuffer* mediaBuffer = new MediaBuffer(buffer); 169 170 mediaBuffer->add_ref(); // Released in MediaAdapter::signalBufferReturned(). 171 mediaBuffer->set_range(buffer->offset(), buffer->size()); 172 173 sp<MetaData> sampleMetaData = mediaBuffer->meta_data(); 174 sampleMetaData->setInt64(kKeyTime, timeUs); 175 // Just set the kKeyDecodingTime as the presentation time for now. 176 sampleMetaData->setInt64(kKeyDecodingTime, timeUs); 177 178 if (flags & MediaCodec::BUFFER_FLAG_SYNCFRAME) { 179 sampleMetaData->setInt32(kKeyIsSyncFrame, true); 180 } 181 182 sp<MediaAdapter> currentTrack = mTrackList[trackIndex]; 183 // This pushBuffer will wait until the mediaBuffer is consumed. 184 return currentTrack->pushBuffer(mediaBuffer); 185 } 186 187 } // namespace android 188
