StagefrightRecorder.cpp revision ddcc4a66d848deef6fb4689e64e30cd9bd2684fe
1/* 2 * Copyright (C) 2009 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 "StagefrightRecorder" 19#include <utils/Log.h> 20 21#include "StagefrightRecorder.h" 22 23#include <binder/IPCThreadState.h> 24#include <media/stagefright/AudioSource.h> 25#include <media/stagefright/AMRWriter.h> 26#include <media/stagefright/CameraSource.h> 27#include <media/stagefright/MPEG4Writer.h> 28#include <media/stagefright/MediaDebug.h> 29#include <media/stagefright/MediaDefs.h> 30#include <media/stagefright/MetaData.h> 31#include <media/stagefright/OMXClient.h> 32#include <media/stagefright/OMXCodec.h> 33#include <camera/ICamera.h> 34#include <camera/Camera.h> 35#include <camera/CameraParameters.h> 36#include <surfaceflinger/ISurface.h> 37#include <utils/Errors.h> 38#include <sys/types.h> 39#include <unistd.h> 40#include <ctype.h> 41 42namespace android { 43 44StagefrightRecorder::StagefrightRecorder() { 45 reset(); 46} 47 48StagefrightRecorder::~StagefrightRecorder() { 49 stop(); 50 51 if (mOutputFd >= 0) { 52 ::close(mOutputFd); 53 mOutputFd = -1; 54 } 55} 56 57status_t StagefrightRecorder::init() { 58 return OK; 59} 60 61status_t StagefrightRecorder::setAudioSource(audio_source as) { 62 mAudioSource = as; 63 64 return OK; 65} 66 67status_t StagefrightRecorder::setVideoSource(video_source vs) { 68 mVideoSource = vs; 69 70 return OK; 71} 72 73status_t StagefrightRecorder::setOutputFormat(output_format of) { 74 mOutputFormat = of; 75 76 return OK; 77} 78 79status_t StagefrightRecorder::setAudioEncoder(audio_encoder ae) { 80 mAudioEncoder = ae; 81 82 return OK; 83} 84 85status_t StagefrightRecorder::setVideoEncoder(video_encoder ve) { 86 mVideoEncoder = ve; 87 88 return OK; 89} 90 91status_t StagefrightRecorder::setVideoSize(int width, int height) { 92 if (width <= 0 || height <= 0) { 93 LOGE("Invalid video size: %dx%d", width, height); 94 return BAD_VALUE; 95 } 96 97 // Additional check on the dimension will be performed later 98 mVideoWidth = width; 99 mVideoHeight = height; 100 101 return OK; 102} 103 104status_t StagefrightRecorder::setVideoFrameRate(int frames_per_second) { 105 if (frames_per_second <= 0 || frames_per_second > 30) { 106 LOGE("Invalid video frame rate: %d", frames_per_second); 107 return BAD_VALUE; 108 } 109 110 // Additional check on the frame rate will be performed later 111 mFrameRate = frames_per_second; 112 113 return OK; 114} 115 116status_t StagefrightRecorder::setCamera(const sp<ICamera> &camera) { 117 LOGV("setCamera: pid %d pid %d", IPCThreadState::self()->getCallingPid(), getpid()); 118 if (camera == 0) { 119 LOGE("camera is NULL"); 120 return UNKNOWN_ERROR; 121 } 122 123 mFlags &= ~ FLAGS_SET_CAMERA | FLAGS_HOT_CAMERA; 124 mCamera = Camera::create(camera); 125 if (mCamera == 0) { 126 LOGE("Unable to connect to camera"); 127 return UNKNOWN_ERROR; 128 } 129 130 LOGV("Connected to camera"); 131 mFlags |= FLAGS_SET_CAMERA; 132 if (mCamera->previewEnabled()) { 133 LOGV("camera is hot"); 134 mFlags |= FLAGS_HOT_CAMERA; 135 } 136 137 return OK; 138} 139 140status_t StagefrightRecorder::setPreviewSurface(const sp<ISurface> &surface) { 141 mPreviewSurface = surface; 142 143 return OK; 144} 145 146status_t StagefrightRecorder::setOutputFile(const char *path) { 147 // We don't actually support this at all, as the media_server process 148 // no longer has permissions to create files. 149 150 return UNKNOWN_ERROR; 151} 152 153status_t StagefrightRecorder::setOutputFile(int fd, int64_t offset, int64_t length) { 154 // These don't make any sense, do they? 155 CHECK_EQ(offset, 0); 156 CHECK_EQ(length, 0); 157 158 if (mOutputFd >= 0) { 159 ::close(mOutputFd); 160 } 161 mOutputFd = dup(fd); 162 163 return OK; 164} 165 166// Attempt to parse an int64 literal optionally surrounded by whitespace, 167// returns true on success, false otherwise. 168static bool safe_strtoi64(const char *s, int64_t *val) { 169 char *end; 170 *val = strtoll(s, &end, 10); 171 172 if (end == s || errno == ERANGE) { 173 return false; 174 } 175 176 // Skip trailing whitespace 177 while (isspace(*end)) { 178 ++end; 179 } 180 181 // For a successful return, the string must contain nothing but a valid 182 // int64 literal optionally surrounded by whitespace. 183 184 return *end == '\0'; 185} 186 187// Return true if the value is in [0, 0x007FFFFFFF] 188static bool safe_strtoi32(const char *s, int32_t *val) { 189 int64_t temp; 190 if (safe_strtoi64(s, &temp)) { 191 if (temp >= 0 && temp <= 0x007FFFFFFF) { 192 *val = static_cast<int32_t>(temp); 193 return true; 194 } 195 } 196 return false; 197} 198 199// Trim both leading and trailing whitespace from the given string. 200static void TrimString(String8 *s) { 201 size_t num_bytes = s->bytes(); 202 const char *data = s->string(); 203 204 size_t leading_space = 0; 205 while (leading_space < num_bytes && isspace(data[leading_space])) { 206 ++leading_space; 207 } 208 209 size_t i = num_bytes; 210 while (i > leading_space && isspace(data[i - 1])) { 211 --i; 212 } 213 214 s->setTo(String8(&data[leading_space], i - leading_space)); 215} 216 217status_t StagefrightRecorder::setParamAudioSamplingRate(int32_t sampleRate) { 218 LOGV("setParamAudioSamplingRate: %d", sampleRate); 219 if (sampleRate <= 0) { 220 LOGE("Invalid audio sampling rate: %d", sampleRate); 221 return BAD_VALUE; 222 } 223 224 // Additional check on the sample rate will be performed later. 225 mSampleRate = sampleRate; 226 return OK; 227} 228 229status_t StagefrightRecorder::setParamAudioNumberOfChannels(int32_t channels) { 230 LOGV("setParamAudioNumberOfChannels: %d", channels); 231 if (channels <= 0 || channels >= 3) { 232 LOGE("Invalid number of audio channels: %d", channels); 233 } 234 235 // Additional check on the number of channels will be performed later. 236 mAudioChannels = channels; 237 return OK; 238} 239 240status_t StagefrightRecorder::setParamAudioEncodingBitRate(int32_t bitRate) { 241 LOGV("setParamAudioEncodingBitRate: %d", bitRate); 242 if (bitRate <= 0) { 243 LOGE("Invalid audio encoding bit rate: %d", bitRate); 244 return BAD_VALUE; 245 } 246 247 // The target bit rate may not be exactly the same as the requested. 248 // It depends on many factors, such as rate control, and the bit rate 249 // range that a specific encoder supports. The mismatch between the 250 // the target and requested bit rate will NOT be treated as an error. 251 mAudioBitRate = bitRate; 252 return OK; 253} 254 255status_t StagefrightRecorder::setParamVideoEncodingBitRate(int32_t bitRate) { 256 LOGV("setParamVideoEncodingBitRate: %d", bitRate); 257 if (bitRate <= 0) { 258 LOGE("Invalid video encoding bit rate: %d", bitRate); 259 return BAD_VALUE; 260 } 261 262 // The target bit rate may not be exactly the same as the requested. 263 // It depends on many factors, such as rate control, and the bit rate 264 // range that a specific encoder supports. The mismatch between the 265 // the target and requested bit rate will NOT be treated as an error. 266 mVideoBitRate = bitRate; 267 return OK; 268} 269 270status_t StagefrightRecorder::setParamMaxDurationOrFileSize(int64_t limit, 271 bool limit_is_duration) { 272 LOGV("setParamMaxDurationOrFileSize: limit (%lld) for %s", 273 limit, limit_is_duration?"duration":"size"); 274 if (limit_is_duration) { // limit is in ms 275 if (limit <= 1000) { // XXX: 1 second 276 LOGE("Max file duration is too short: %lld us", limit); 277 } 278 mMaxFileDurationUs = limit * 1000LL; 279 } else { 280 if (limit <= 1024) { // XXX: 1 kB 281 LOGE("Max file size is too small: %lld bytes", limit); 282 } 283 mMaxFileSizeBytes = limit; 284 } 285 return OK; 286} 287 288status_t StagefrightRecorder::setParamInterleaveDuration(int32_t durationUs) { 289 LOGV("setParamInterleaveDuration: %d", durationUs); 290 if (durationUs <= 500000) { // 500 ms 291 // If interleave duration is too small, it is very inefficient to do 292 // interleaving since the metadata overhead will count for a significant 293 // portion of the saved contents 294 LOGE("Audio/video interleave duration is too small: %d us", durationUs); 295 return BAD_VALUE; 296 } else if (durationUs >= 10000000) { // 10 seconds 297 // If interleaving duration is too large, it can cause the recording 298 // session to use too much memory since we have to save the output 299 // data before we write them out 300 LOGE("Audio/video interleave duration is too large: %d us", durationUs); 301 return BAD_VALUE; 302 } 303 mInterleaveDurationUs = durationUs; 304 return OK; 305} 306 307// If interval < 0, only the first frame is I frame, and rest are all P frames 308// If interval == 0, all frames are encoded as I frames. No P frames 309// If interval > 0, it is the time spacing between 2 neighboring I frames 310status_t StagefrightRecorder::setParamIFramesInterval(int32_t interval) { 311 LOGV("setParamIFramesInterval: %d seconds", interval); 312 mIFramesInterval = interval; 313 return OK; 314} 315 316status_t StagefrightRecorder::setParameter( 317 const String8 &key, const String8 &value) { 318 LOGV("setParameter: key (%s) => value (%s)", key.string(), value.string()); 319 if (key == "max-duration") { 320 int64_t max_duration_ms; 321 if (safe_strtoi64(value.string(), &max_duration_ms)) { 322 return setParamMaxDurationOrFileSize( 323 max_duration_ms, true /* limit_is_duration */); 324 } 325 } else if (key == "max-filesize") { 326 int64_t max_filesize_bytes; 327 if (safe_strtoi64(value.string(), &max_filesize_bytes)) { 328 return setParamMaxDurationOrFileSize( 329 max_filesize_bytes, false /* limit is filesize */); 330 } 331 } else if (key == "audio-param-sampling-rate") { 332 int32_t sampling_rate; 333 if (safe_strtoi32(value.string(), &sampling_rate)) { 334 return setParamAudioSamplingRate(sampling_rate); 335 } 336 } else if (key == "audio-param-number-of-channels") { 337 int32_t number_of_channels; 338 if (safe_strtoi32(value.string(), &number_of_channels)) { 339 return setParamAudioNumberOfChannels(number_of_channels); 340 } 341 } else if (key == "audio-param-encoding-bitrate") { 342 int32_t audio_bitrate; 343 if (safe_strtoi32(value.string(), &audio_bitrate)) { 344 return setParamAudioEncodingBitRate(audio_bitrate); 345 } 346 } else if (key == "video-param-encoding-bitrate") { 347 int32_t video_bitrate; 348 if (safe_strtoi32(value.string(), &video_bitrate)) { 349 return setParamVideoEncodingBitRate(video_bitrate); 350 } 351 } else if (key == "param-interleave-duration-us") { 352 int32_t durationUs; 353 if (safe_strtoi32(value.string(), &durationUs)) { 354 return setParamInterleaveDuration(durationUs); 355 } 356 } else if (key == "param-i-frames-interval") { 357 int32_t interval; 358 if (safe_strtoi32(value.string(), &interval)) { 359 return setParamIFramesInterval(interval); 360 } 361 } else { 362 LOGE("setParameter: failed to find key %s", key.string()); 363 } 364 return BAD_VALUE; 365} 366 367status_t StagefrightRecorder::setParameters(const String8 ¶ms) { 368 LOGV("setParameters: %s", params.string()); 369 const char *cparams = params.string(); 370 const char *key_start = cparams; 371 for (;;) { 372 const char *equal_pos = strchr(key_start, '='); 373 if (equal_pos == NULL) { 374 LOGE("Parameters %s miss a value", cparams); 375 return BAD_VALUE; 376 } 377 String8 key(key_start, equal_pos - key_start); 378 TrimString(&key); 379 if (key.length() == 0) { 380 LOGE("Parameters %s contains an empty key", cparams); 381 return BAD_VALUE; 382 } 383 const char *value_start = equal_pos + 1; 384 const char *semicolon_pos = strchr(value_start, ';'); 385 String8 value; 386 if (semicolon_pos == NULL) { 387 value.setTo(value_start); 388 } else { 389 value.setTo(value_start, semicolon_pos - value_start); 390 } 391 if (setParameter(key, value) != OK) { 392 return BAD_VALUE; 393 } 394 if (semicolon_pos == NULL) { 395 break; // Reaches the end 396 } 397 key_start = semicolon_pos + 1; 398 } 399 return OK; 400} 401 402status_t StagefrightRecorder::setListener(const sp<IMediaPlayerClient> &listener) { 403 mListener = listener; 404 405 return OK; 406} 407 408status_t StagefrightRecorder::prepare() { 409 return OK; 410} 411 412status_t StagefrightRecorder::start() { 413 if (mWriter != NULL) { 414 return UNKNOWN_ERROR; 415 } 416 417 switch (mOutputFormat) { 418 case OUTPUT_FORMAT_DEFAULT: 419 case OUTPUT_FORMAT_THREE_GPP: 420 case OUTPUT_FORMAT_MPEG_4: 421 return startMPEG4Recording(); 422 423 case OUTPUT_FORMAT_AMR_NB: 424 case OUTPUT_FORMAT_AMR_WB: 425 return startAMRRecording(); 426 427 case OUTPUT_FORMAT_AAC_ADIF: 428 case OUTPUT_FORMAT_AAC_ADTS: 429 return startAACRecording(); 430 431 default: 432 return UNKNOWN_ERROR; 433 } 434} 435 436sp<MediaSource> StagefrightRecorder::createAudioSource() { 437 sp<AudioSource> audioSource = 438 new AudioSource( 439 mAudioSource, 440 mSampleRate, 441 AudioSystem::CHANNEL_IN_MONO); 442 443 status_t err = audioSource->initCheck(); 444 445 if (err != OK) { 446 LOGE("audio source is not initialized"); 447 return NULL; 448 } 449 450 sp<MetaData> encMeta = new MetaData; 451 const char *mime; 452 switch (mAudioEncoder) { 453 case AUDIO_ENCODER_AMR_NB: 454 case AUDIO_ENCODER_DEFAULT: 455 mime = MEDIA_MIMETYPE_AUDIO_AMR_NB; 456 break; 457 case AUDIO_ENCODER_AMR_WB: 458 mime = MEDIA_MIMETYPE_AUDIO_AMR_WB; 459 break; 460 case AUDIO_ENCODER_AAC: 461 mime = MEDIA_MIMETYPE_AUDIO_AAC; 462 break; 463 default: 464 LOGE("Unknown audio encoder: %d", mAudioEncoder); 465 return NULL; 466 } 467 encMeta->setCString(kKeyMIMEType, mime); 468 469 int32_t maxInputSize; 470 CHECK(audioSource->getFormat()->findInt32( 471 kKeyMaxInputSize, &maxInputSize)); 472 473 encMeta->setInt32(kKeyMaxInputSize, maxInputSize); 474 encMeta->setInt32(kKeyChannelCount, mAudioChannels); 475 encMeta->setInt32(kKeySampleRate, mSampleRate); 476 encMeta->setInt32(kKeyBitRate, mAudioBitRate); 477 478 OMXClient client; 479 CHECK_EQ(client.connect(), OK); 480 481 sp<MediaSource> audioEncoder = 482 OMXCodec::Create(client.interface(), encMeta, 483 true /* createEncoder */, audioSource); 484 485 return audioEncoder; 486} 487 488status_t StagefrightRecorder::startAACRecording() { 489 CHECK(mOutputFormat == OUTPUT_FORMAT_AAC_ADIF || 490 mOutputFormat == OUTPUT_FORMAT_AAC_ADTS); 491 492 CHECK(mAudioEncoder == AUDIO_ENCODER_AAC); 493 CHECK(mAudioSource != AUDIO_SOURCE_LIST_END); 494 CHECK(mOutputFd >= 0); 495 496 CHECK(0 == "AACWriter is not implemented yet"); 497 498 return OK; 499} 500 501status_t StagefrightRecorder::startAMRRecording() { 502 CHECK(mOutputFormat == OUTPUT_FORMAT_AMR_NB || 503 mOutputFormat == OUTPUT_FORMAT_AMR_WB); 504 505 if (mOutputFormat == OUTPUT_FORMAT_AMR_NB) { 506 if (mAudioEncoder != AUDIO_ENCODER_DEFAULT && 507 mAudioEncoder != AUDIO_ENCODER_AMR_NB) { 508 LOGE("Invalid encoder %d used for AMRNB recording", 509 mAudioEncoder); 510 return UNKNOWN_ERROR; 511 } 512 if (mSampleRate != 8000) { 513 LOGE("Invalid sampling rate %d used for AMRNB recording", 514 mSampleRate); 515 return UNKNOWN_ERROR; 516 } 517 } else { // mOutputFormat must be OUTPUT_FORMAT_AMR_WB 518 if (mAudioEncoder != AUDIO_ENCODER_AMR_WB) { 519 LOGE("Invlaid encoder %d used for AMRWB recording", 520 mAudioEncoder); 521 return UNKNOWN_ERROR; 522 } 523 if (mSampleRate != 16000) { 524 LOGE("Invalid sample rate %d used for AMRWB recording", 525 mSampleRate); 526 return UNKNOWN_ERROR; 527 } 528 } 529 if (mAudioChannels != 1) { 530 LOGE("Invalid number of audio channels %d used for amr recording", 531 mAudioChannels); 532 return UNKNOWN_ERROR; 533 } 534 535 if (mAudioSource >= AUDIO_SOURCE_LIST_END) { 536 LOGE("Invalid audio source: %d", mAudioSource); 537 return UNKNOWN_ERROR; 538 } 539 540 sp<MediaSource> audioEncoder = createAudioSource(); 541 542 if (audioEncoder == NULL) { 543 return UNKNOWN_ERROR; 544 } 545 546 CHECK(mOutputFd >= 0); 547 mWriter = new AMRWriter(dup(mOutputFd)); 548 mWriter->addSource(audioEncoder); 549 550 if (mMaxFileDurationUs != 0) { 551 mWriter->setMaxFileDuration(mMaxFileDurationUs); 552 } 553 if (mMaxFileSizeBytes != 0) { 554 mWriter->setMaxFileSize(mMaxFileSizeBytes); 555 } 556 mWriter->setListener(mListener); 557 mWriter->start(); 558 559 return OK; 560} 561 562status_t StagefrightRecorder::startMPEG4Recording() { 563 mWriter = new MPEG4Writer(dup(mOutputFd)); 564 565 // Add audio source first if it exists 566 if (mAudioSource != AUDIO_SOURCE_LIST_END) { 567 sp<MediaSource> audioEncoder; 568 switch(mAudioEncoder) { 569 case AUDIO_ENCODER_AMR_NB: 570 case AUDIO_ENCODER_AMR_WB: 571 case AUDIO_ENCODER_AAC: 572 audioEncoder = createAudioSource(); 573 break; 574 default: 575 LOGE("Unsupported audio encoder: %d", mAudioEncoder); 576 return UNKNOWN_ERROR; 577 } 578 579 if (audioEncoder == NULL) { 580 return UNKNOWN_ERROR; 581 } 582 583 mWriter->addSource(audioEncoder); 584 } 585 if (mVideoSource == VIDEO_SOURCE_DEFAULT 586 || mVideoSource == VIDEO_SOURCE_CAMERA) { 587 CHECK(mCamera != NULL); 588 589 // Set the actual video recording frame size 590 CameraParameters params(mCamera->getParameters()); 591 params.setPreviewSize(mVideoWidth, mVideoHeight); 592 params.setPreviewFrameRate(mFrameRate); 593 String8 s = params.flatten(); 594 CHECK_EQ(OK, mCamera->setParameters(s)); 595 CameraParameters newCameraParams(mCamera->getParameters()); 596 597 // Check on video frame size 598 int frameWidth = 0, frameHeight = 0; 599 newCameraParams.getPreviewSize(&frameWidth, &frameHeight); 600 if (frameWidth < 0 || frameWidth != mVideoWidth || 601 frameHeight < 0 || frameHeight != mVideoHeight) { 602 LOGE("Failed to set the video frame size to %dx%d", 603 mVideoWidth, mVideoHeight); 604 return UNKNOWN_ERROR; 605 } 606 607 // Check on video frame rate 608 int frameRate = newCameraParams.getPreviewFrameRate(); 609 if (frameRate < 0 || (frameRate - mFrameRate) != 0) { 610 LOGE("Failed to set frame rate to %d fps. The actual " 611 "frame rate is %d", mFrameRate, frameRate); 612 } 613 614 CHECK_EQ(OK, mCamera->setPreviewDisplay(mPreviewSurface)); 615 616 sp<CameraSource> cameraSource = 617 CameraSource::CreateFromCamera(mCamera); 618 619 CHECK(cameraSource != NULL); 620 621 sp<MetaData> enc_meta = new MetaData; 622 enc_meta->setInt32(kKeyBitRate, mVideoBitRate); 623 enc_meta->setInt32(kKeySampleRate, mFrameRate); // XXX: kKeySampleRate? 624 625 switch (mVideoEncoder) { 626 case VIDEO_ENCODER_H263: 627 enc_meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_VIDEO_H263); 628 break; 629 630 case VIDEO_ENCODER_MPEG_4_SP: 631 enc_meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_VIDEO_MPEG4); 632 break; 633 634 case VIDEO_ENCODER_H264: 635 enc_meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_VIDEO_AVC); 636 break; 637 638 default: 639 CHECK(!"Should not be here, unsupported video encoding."); 640 break; 641 } 642 643 sp<MetaData> meta = cameraSource->getFormat(); 644 645 int32_t width, height, stride, sliceHeight; 646 CHECK(meta->findInt32(kKeyWidth, &width)); 647 CHECK(meta->findInt32(kKeyHeight, &height)); 648 CHECK(meta->findInt32(kKeyStride, &stride)); 649 CHECK(meta->findInt32(kKeySliceHeight, &sliceHeight)); 650 651 enc_meta->setInt32(kKeyWidth, width); 652 enc_meta->setInt32(kKeyHeight, height); 653 enc_meta->setInt32(kKeyIFramesInterval, mIFramesInterval); 654 enc_meta->setInt32(kKeyStride, stride); 655 enc_meta->setInt32(kKeySliceHeight, sliceHeight); 656 657 OMXClient client; 658 CHECK_EQ(client.connect(), OK); 659 660 sp<MediaSource> encoder = 661 OMXCodec::Create( 662 client.interface(), enc_meta, 663 true /* createEncoder */, cameraSource); 664 665 CHECK(mOutputFd >= 0); 666 mWriter->addSource(encoder); 667 } 668 669 { 670 // MPEGWriter specific handling 671 MPEG4Writer *writer = ((MPEG4Writer *) mWriter.get()); // mWriter is an MPEGWriter 672 writer->setInterleaveDuration(mInterleaveDurationUs); 673 } 674 675 if (mMaxFileDurationUs != 0) { 676 mWriter->setMaxFileDuration(mMaxFileDurationUs); 677 } 678 if (mMaxFileSizeBytes != 0) { 679 mWriter->setMaxFileSize(mMaxFileSizeBytes); 680 } 681 mWriter->setListener(mListener); 682 mWriter->start(); 683 return OK; 684} 685 686status_t StagefrightRecorder::stop() { 687 if (mWriter == NULL) { 688 return UNKNOWN_ERROR; 689 } 690 691 mWriter->stop(); 692 mWriter = NULL; 693 694 return OK; 695} 696 697status_t StagefrightRecorder::close() { 698 stop(); 699 700 if (mCamera != 0) { 701 if ((mFlags & FLAGS_HOT_CAMERA) == 0) { 702 LOGV("Camera was cold when we started, stopping preview"); 703 mCamera->stopPreview(); 704 } 705 if (mFlags & FLAGS_SET_CAMERA) { 706 LOGV("Unlocking camera"); 707 mCamera->unlock(); 708 } 709 mFlags = 0; 710 } 711 return OK; 712} 713 714status_t StagefrightRecorder::reset() { 715 stop(); 716 717 // No audio or video source by default 718 mAudioSource = AUDIO_SOURCE_LIST_END; 719 mVideoSource = VIDEO_SOURCE_LIST_END; 720 721 // Default parameters 722 mOutputFormat = OUTPUT_FORMAT_THREE_GPP; 723 mAudioEncoder = AUDIO_ENCODER_AMR_NB; 724 mVideoEncoder = VIDEO_ENCODER_H263; 725 mVideoWidth = 176; 726 mVideoHeight = 144; 727 mFrameRate = 20; 728 mVideoBitRate = 192000; 729 mSampleRate = 8000; 730 mAudioChannels = 1; 731 mAudioBitRate = 12200; 732 mInterleaveDurationUs = 0; 733 mIFramesInterval = 1; 734 735 mOutputFd = -1; 736 mFlags = 0; 737 738 return OK; 739} 740 741status_t StagefrightRecorder::getMaxAmplitude(int *max) { 742 *max = 0; 743 744 return OK; 745} 746 747} // namespace android 748