StagefrightRecorder.cpp revision 54ef1bae010f12dfe6a40ff4452695b1b11ff449 
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 <inttypes.h>
20#include <utils/Log.h>
21
22#include "WebmWriter.h"
23#include "StagefrightRecorder.h"
24
25#include <binder/IPCThreadState.h>
26#include <binder/IServiceManager.h>
27
28#include <media/IMediaPlayerService.h>
29#include <media/stagefright/foundation/ABuffer.h>
30#include <media/stagefright/foundation/ADebug.h>
31#include <media/stagefright/foundation/AMessage.h>
32#include <media/stagefright/foundation/ALooper.h>
33#include <media/stagefright/AudioSource.h>
34#include <media/stagefright/AMRWriter.h>
35#include <media/stagefright/AACWriter.h>
36#include <media/stagefright/CameraSource.h>
37#include <media/stagefright/CameraSourceTimeLapse.h>
38#include <media/stagefright/MPEG2TSWriter.h>
39#include <media/stagefright/MPEG4Writer.h>
40#include <media/stagefright/MediaDefs.h>
41#include <media/stagefright/MetaData.h>
42#include <media/stagefright/MediaCodecSource.h>
43#include <media/stagefright/OMXClient.h>
44#include <media/stagefright/OMXCodec.h>
45#include <media/MediaProfiles.h>
46#include <camera/ICamera.h>
47#include <camera/CameraParameters.h>
48
49#include <utils/Errors.h>
50#include <sys/types.h>
51#include <ctype.h>
52#include <unistd.h>
53
54#include <system/audio.h>
55
56#include "ARTPWriter.h"
57
58namespace android {
59
60// To collect the encoder usage for the battery app
61static void addBatteryData(uint32_t params) {
62    sp<IBinder> binder =
63        defaultServiceManager()->getService(String16("media.player"));
64    sp<IMediaPlayerService> service = interface_cast<IMediaPlayerService>(binder);
65    CHECK(service.get() != NULL);
66
67    service->addBatteryData(params);
68}
69
70
71StagefrightRecorder::StagefrightRecorder()
72    : mWriter(NULL),
73      mOutputFd(-1),
74      mAudioSource(AUDIO_SOURCE_CNT),
75      mVideoSource(VIDEO_SOURCE_LIST_END),
76      mCaptureTimeLapse(false),
77      mStarted(false) {
78
79    ALOGV("Constructor");
80    reset();
81}
82
83StagefrightRecorder::~StagefrightRecorder() {
84    ALOGV("Destructor");
85    stop();
86
87    if (mLooper != NULL) {
88        mLooper->stop();
89    }
90}
91
92status_t StagefrightRecorder::init() {
93    ALOGV("init");
94
95    mLooper = new ALooper;
96    mLooper->setName("recorder_looper");
97    mLooper->start();
98
99    return OK;
100}
101
102// The client side of mediaserver asks it to creat a SurfaceMediaSource
103// and return a interface reference. The client side will use that
104// while encoding GL Frames
105sp<IGraphicBufferProducer> StagefrightRecorder::querySurfaceMediaSource() const {
106    ALOGV("Get SurfaceMediaSource");
107    return mGraphicBufferProducer;
108}
109
110status_t StagefrightRecorder::setAudioSource(audio_source_t as) {
111    ALOGV("setAudioSource: %d", as);
112    if (as < AUDIO_SOURCE_DEFAULT ||
113        as >= AUDIO_SOURCE_CNT) {
114        ALOGE("Invalid audio source: %d", as);
115        return BAD_VALUE;
116    }
117
118    if (as == AUDIO_SOURCE_DEFAULT) {
119        mAudioSource = AUDIO_SOURCE_MIC;
120    } else {
121        mAudioSource = as;
122    }
123
124    return OK;
125}
126
127status_t StagefrightRecorder::setVideoSource(video_source vs) {
128    ALOGV("setVideoSource: %d", vs);
129    if (vs < VIDEO_SOURCE_DEFAULT ||
130        vs >= VIDEO_SOURCE_LIST_END) {
131        ALOGE("Invalid video source: %d", vs);
132        return BAD_VALUE;
133    }
134
135    if (vs == VIDEO_SOURCE_DEFAULT) {
136        mVideoSource = VIDEO_SOURCE_CAMERA;
137    } else {
138        mVideoSource = vs;
139    }
140
141    return OK;
142}
143
144status_t StagefrightRecorder::setOutputFormat(output_format of) {
145    ALOGV("setOutputFormat: %d", of);
146    if (of < OUTPUT_FORMAT_DEFAULT ||
147        of >= OUTPUT_FORMAT_LIST_END) {
148        ALOGE("Invalid output format: %d", of);
149        return BAD_VALUE;
150    }
151
152    if (of == OUTPUT_FORMAT_DEFAULT) {
153        mOutputFormat = OUTPUT_FORMAT_THREE_GPP;
154    } else {
155        mOutputFormat = of;
156    }
157
158    return OK;
159}
160
161status_t StagefrightRecorder::setAudioEncoder(audio_encoder ae) {
162    ALOGV("setAudioEncoder: %d", ae);
163    if (ae < AUDIO_ENCODER_DEFAULT ||
164        ae >= AUDIO_ENCODER_LIST_END) {
165        ALOGE("Invalid audio encoder: %d", ae);
166        return BAD_VALUE;
167    }
168
169    if (ae == AUDIO_ENCODER_DEFAULT) {
170        mAudioEncoder = AUDIO_ENCODER_AMR_NB;
171    } else {
172        mAudioEncoder = ae;
173    }
174
175    return OK;
176}
177
178status_t StagefrightRecorder::setVideoEncoder(video_encoder ve) {
179    ALOGV("setVideoEncoder: %d", ve);
180    if (ve < VIDEO_ENCODER_DEFAULT ||
181        ve >= VIDEO_ENCODER_LIST_END) {
182        ALOGE("Invalid video encoder: %d", ve);
183        return BAD_VALUE;
184    }
185
186    mVideoEncoder = ve;
187
188    return OK;
189}
190
191status_t StagefrightRecorder::setVideoSize(int width, int height) {
192    ALOGV("setVideoSize: %dx%d", width, height);
193    if (width <= 0 || height <= 0) {
194        ALOGE("Invalid video size: %dx%d", width, height);
195        return BAD_VALUE;
196    }
197
198    // Additional check on the dimension will be performed later
199    mVideoWidth = width;
200    mVideoHeight = height;
201
202    return OK;
203}
204
205status_t StagefrightRecorder::setVideoFrameRate(int frames_per_second) {
206    ALOGV("setVideoFrameRate: %d", frames_per_second);
207    if ((frames_per_second <= 0 && frames_per_second != -1) ||
208        frames_per_second > 120) {
209        ALOGE("Invalid video frame rate: %d", frames_per_second);
210        return BAD_VALUE;
211    }
212
213    // Additional check on the frame rate will be performed later
214    mFrameRate = frames_per_second;
215
216    return OK;
217}
218
219status_t StagefrightRecorder::setCamera(const sp<ICamera> &camera,
220                                        const sp<ICameraRecordingProxy> &proxy) {
221    ALOGV("setCamera");
222    if (camera == 0) {
223        ALOGE("camera is NULL");
224        return BAD_VALUE;
225    }
226    if (proxy == 0) {
227        ALOGE("camera proxy is NULL");
228        return BAD_VALUE;
229    }
230
231    mCamera = camera;
232    mCameraProxy = proxy;
233    return OK;
234}
235
236status_t StagefrightRecorder::setPreviewSurface(const sp<IGraphicBufferProducer> &surface) {
237    ALOGV("setPreviewSurface: %p", surface.get());
238    mPreviewSurface = surface;
239
240    return OK;
241}
242
243status_t StagefrightRecorder::setOutputFile(const char * /* path */) {
244    ALOGE("setOutputFile(const char*) must not be called");
245    // We don't actually support this at all, as the media_server process
246    // no longer has permissions to create files.
247
248    return -EPERM;
249}
250
251status_t StagefrightRecorder::setOutputFile(int fd, int64_t offset, int64_t length) {
252    ALOGV("setOutputFile: %d, %lld, %lld", fd, offset, length);
253    // These don't make any sense, do they?
254    CHECK_EQ(offset, 0ll);
255    CHECK_EQ(length, 0ll);
256
257    if (fd < 0) {
258        ALOGE("Invalid file descriptor: %d", fd);
259        return -EBADF;
260    }
261
262    if (mOutputFd >= 0) {
263        ::close(mOutputFd);
264    }
265    mOutputFd = dup(fd);
266
267    return OK;
268}
269
270// Attempt to parse an int64 literal optionally surrounded by whitespace,
271// returns true on success, false otherwise.
272static bool safe_strtoi64(const char *s, int64_t *val) {
273    char *end;
274
275    // It is lame, but according to man page, we have to set errno to 0
276    // before calling strtoll().
277    errno = 0;
278    *val = strtoll(s, &end, 10);
279
280    if (end == s || errno == ERANGE) {
281        return false;
282    }
283
284    // Skip trailing whitespace
285    while (isspace(*end)) {
286        ++end;
287    }
288
289    // For a successful return, the string must contain nothing but a valid
290    // int64 literal optionally surrounded by whitespace.
291
292    return *end == '\0';
293}
294
295// Return true if the value is in [0, 0x007FFFFFFF]
296static bool safe_strtoi32(const char *s, int32_t *val) {
297    int64_t temp;
298    if (safe_strtoi64(s, &temp)) {
299        if (temp >= 0 && temp <= 0x007FFFFFFF) {
300            *val = static_cast<int32_t>(temp);
301            return true;
302        }
303    }
304    return false;
305}
306
307// Trim both leading and trailing whitespace from the given string.
308static void TrimString(String8 *s) {
309    size_t num_bytes = s->bytes();
310    const char *data = s->string();
311
312    size_t leading_space = 0;
313    while (leading_space < num_bytes && isspace(data[leading_space])) {
314        ++leading_space;
315    }
316
317    size_t i = num_bytes;
318    while (i > leading_space && isspace(data[i - 1])) {
319        --i;
320    }
321
322    s->setTo(String8(&data[leading_space], i - leading_space));
323}
324
325status_t StagefrightRecorder::setParamAudioSamplingRate(int32_t sampleRate) {
326    ALOGV("setParamAudioSamplingRate: %d", sampleRate);
327    if (sampleRate <= 0) {
328        ALOGE("Invalid audio sampling rate: %d", sampleRate);
329        return BAD_VALUE;
330    }
331
332    // Additional check on the sample rate will be performed later.
333    mSampleRate = sampleRate;
334    return OK;
335}
336
337status_t StagefrightRecorder::setParamAudioNumberOfChannels(int32_t channels) {
338    ALOGV("setParamAudioNumberOfChannels: %d", channels);
339    if (channels <= 0 || channels >= 3) {
340        ALOGE("Invalid number of audio channels: %d", channels);
341        return BAD_VALUE;
342    }
343
344    // Additional check on the number of channels will be performed later.
345    mAudioChannels = channels;
346    return OK;
347}
348
349status_t StagefrightRecorder::setParamAudioEncodingBitRate(int32_t bitRate) {
350    ALOGV("setParamAudioEncodingBitRate: %d", bitRate);
351    if (bitRate <= 0) {
352        ALOGE("Invalid audio encoding bit rate: %d", bitRate);
353        return BAD_VALUE;
354    }
355
356    // The target bit rate may not be exactly the same as the requested.
357    // It depends on many factors, such as rate control, and the bit rate
358    // range that a specific encoder supports. The mismatch between the
359    // the target and requested bit rate will NOT be treated as an error.
360    mAudioBitRate = bitRate;
361    return OK;
362}
363
364status_t StagefrightRecorder::setParamVideoEncodingBitRate(int32_t bitRate) {
365    ALOGV("setParamVideoEncodingBitRate: %d", bitRate);
366    if (bitRate <= 0) {
367        ALOGE("Invalid video encoding bit rate: %d", bitRate);
368        return BAD_VALUE;
369    }
370
371    // The target bit rate may not be exactly the same as the requested.
372    // It depends on many factors, such as rate control, and the bit rate
373    // range that a specific encoder supports. The mismatch between the
374    // the target and requested bit rate will NOT be treated as an error.
375    mVideoBitRate = bitRate;
376    return OK;
377}
378
379// Always rotate clockwise, and only support 0, 90, 180 and 270 for now.
380status_t StagefrightRecorder::setParamVideoRotation(int32_t degrees) {
381    ALOGV("setParamVideoRotation: %d", degrees);
382    if (degrees < 0 || degrees % 90 != 0) {
383        ALOGE("Unsupported video rotation angle: %d", degrees);
384        return BAD_VALUE;
385    }
386    mRotationDegrees = degrees % 360;
387    return OK;
388}
389
390status_t StagefrightRecorder::setParamMaxFileDurationUs(int64_t timeUs) {
391    ALOGV("setParamMaxFileDurationUs: %lld us", timeUs);
392
393    // This is meant for backward compatibility for MediaRecorder.java
394    if (timeUs <= 0) {
395        ALOGW("Max file duration is not positive: %lld us. Disabling duration limit.", timeUs);
396        timeUs = 0; // Disable the duration limit for zero or negative values.
397    } else if (timeUs <= 100000LL) {  // XXX: 100 milli-seconds
398        ALOGE("Max file duration is too short: %lld us", timeUs);
399        return BAD_VALUE;
400    }
401
402    if (timeUs <= 15 * 1000000LL) {
403        ALOGW("Target duration (%lld us) too short to be respected", timeUs);
404    }
405    mMaxFileDurationUs = timeUs;
406    return OK;
407}
408
409status_t StagefrightRecorder::setParamMaxFileSizeBytes(int64_t bytes) {
410    ALOGV("setParamMaxFileSizeBytes: %lld bytes", bytes);
411
412    // This is meant for backward compatibility for MediaRecorder.java
413    if (bytes <= 0) {
414        ALOGW("Max file size is not positive: %lld bytes. "
415             "Disabling file size limit.", bytes);
416        bytes = 0; // Disable the file size limit for zero or negative values.
417    } else if (bytes <= 1024) {  // XXX: 1 kB
418        ALOGE("Max file size is too small: %lld bytes", bytes);
419        return BAD_VALUE;
420    }
421
422    if (bytes <= 100 * 1024) {
423        ALOGW("Target file size (%lld bytes) is too small to be respected", bytes);
424    }
425
426    mMaxFileSizeBytes = bytes;
427    return OK;
428}
429
430status_t StagefrightRecorder::setParamInterleaveDuration(int32_t durationUs) {
431    ALOGV("setParamInterleaveDuration: %d", durationUs);
432    if (durationUs <= 500000) {           //  500 ms
433        // If interleave duration is too small, it is very inefficient to do
434        // interleaving since the metadata overhead will count for a significant
435        // portion of the saved contents
436        ALOGE("Audio/video interleave duration is too small: %d us", durationUs);
437        return BAD_VALUE;
438    } else if (durationUs >= 10000000) {  // 10 seconds
439        // If interleaving duration is too large, it can cause the recording
440        // session to use too much memory since we have to save the output
441        // data before we write them out
442        ALOGE("Audio/video interleave duration is too large: %d us", durationUs);
443        return BAD_VALUE;
444    }
445    mInterleaveDurationUs = durationUs;
446    return OK;
447}
448
449// If seconds <  0, only the first frame is I frame, and rest are all P frames
450// If seconds == 0, all frames are encoded as I frames. No P frames
451// If seconds >  0, it is the time spacing (seconds) between 2 neighboring I frames
452status_t StagefrightRecorder::setParamVideoIFramesInterval(int32_t seconds) {
453    ALOGV("setParamVideoIFramesInterval: %d seconds", seconds);
454    mIFramesIntervalSec = seconds;
455    return OK;
456}
457
458status_t StagefrightRecorder::setParam64BitFileOffset(bool use64Bit) {
459    ALOGV("setParam64BitFileOffset: %s",
460        use64Bit? "use 64 bit file offset": "use 32 bit file offset");
461    mUse64BitFileOffset = use64Bit;
462    return OK;
463}
464
465status_t StagefrightRecorder::setParamVideoCameraId(int32_t cameraId) {
466    ALOGV("setParamVideoCameraId: %d", cameraId);
467    if (cameraId < 0) {
468        return BAD_VALUE;
469    }
470    mCameraId = cameraId;
471    return OK;
472}
473
474status_t StagefrightRecorder::setParamTrackTimeStatus(int64_t timeDurationUs) {
475    ALOGV("setParamTrackTimeStatus: %lld", timeDurationUs);
476    if (timeDurationUs < 20000) {  // Infeasible if shorter than 20 ms?
477        ALOGE("Tracking time duration too short: %lld us", timeDurationUs);
478        return BAD_VALUE;
479    }
480    mTrackEveryTimeDurationUs = timeDurationUs;
481    return OK;
482}
483
484status_t StagefrightRecorder::setParamVideoEncoderProfile(int32_t profile) {
485    ALOGV("setParamVideoEncoderProfile: %d", profile);
486
487    // Additional check will be done later when we load the encoder.
488    // For now, we are accepting values defined in OpenMAX IL.
489    mVideoEncoderProfile = profile;
490    return OK;
491}
492
493status_t StagefrightRecorder::setParamVideoEncoderLevel(int32_t level) {
494    ALOGV("setParamVideoEncoderLevel: %d", level);
495
496    // Additional check will be done later when we load the encoder.
497    // For now, we are accepting values defined in OpenMAX IL.
498    mVideoEncoderLevel = level;
499    return OK;
500}
501
502status_t StagefrightRecorder::setParamMovieTimeScale(int32_t timeScale) {
503    ALOGV("setParamMovieTimeScale: %d", timeScale);
504
505    // The range is set to be the same as the audio's time scale range
506    // since audio's time scale has a wider range.
507    if (timeScale < 600 || timeScale > 96000) {
508        ALOGE("Time scale (%d) for movie is out of range [600, 96000]", timeScale);
509        return BAD_VALUE;
510    }
511    mMovieTimeScale = timeScale;
512    return OK;
513}
514
515status_t StagefrightRecorder::setParamVideoTimeScale(int32_t timeScale) {
516    ALOGV("setParamVideoTimeScale: %d", timeScale);
517
518    // 60000 is chosen to make sure that each video frame from a 60-fps
519    // video has 1000 ticks.
520    if (timeScale < 600 || timeScale > 60000) {
521        ALOGE("Time scale (%d) for video is out of range [600, 60000]", timeScale);
522        return BAD_VALUE;
523    }
524    mVideoTimeScale = timeScale;
525    return OK;
526}
527
528status_t StagefrightRecorder::setParamAudioTimeScale(int32_t timeScale) {
529    ALOGV("setParamAudioTimeScale: %d", timeScale);
530
531    // 96000 Hz is the highest sampling rate support in AAC.
532    if (timeScale < 600 || timeScale > 96000) {
533        ALOGE("Time scale (%d) for audio is out of range [600, 96000]", timeScale);
534        return BAD_VALUE;
535    }
536    mAudioTimeScale = timeScale;
537    return OK;
538}
539
540status_t StagefrightRecorder::setParamTimeLapseEnable(int32_t timeLapseEnable) {
541    ALOGV("setParamTimeLapseEnable: %d", timeLapseEnable);
542
543    if(timeLapseEnable == 0) {
544        mCaptureTimeLapse = false;
545    } else if (timeLapseEnable == 1) {
546        mCaptureTimeLapse = true;
547    } else {
548        return BAD_VALUE;
549    }
550    return OK;
551}
552
553status_t StagefrightRecorder::setParamTimeBetweenTimeLapseFrameCapture(int64_t timeUs) {
554    ALOGV("setParamTimeBetweenTimeLapseFrameCapture: %lld us", timeUs);
555
556    // Not allowing time more than a day
557    if (timeUs <= 0 || timeUs > 86400*1E6) {
558        ALOGE("Time between time lapse frame capture (%lld) is out of range [0, 1 Day]", timeUs);
559        return BAD_VALUE;
560    }
561
562    mTimeBetweenTimeLapseFrameCaptureUs = timeUs;
563    return OK;
564}
565
566status_t StagefrightRecorder::setParamGeoDataLongitude(
567    int64_t longitudex10000) {
568
569    if (longitudex10000 > 1800000 || longitudex10000 < -1800000) {
570        return BAD_VALUE;
571    }
572    mLongitudex10000 = longitudex10000;
573    return OK;
574}
575
576status_t StagefrightRecorder::setParamGeoDataLatitude(
577    int64_t latitudex10000) {
578
579    if (latitudex10000 > 900000 || latitudex10000 < -900000) {
580        return BAD_VALUE;
581    }
582    mLatitudex10000 = latitudex10000;
583    return OK;
584}
585
586status_t StagefrightRecorder::setParameter(
587        const String8 &key, const String8 &value) {
588    ALOGV("setParameter: key (%s) => value (%s)", key.string(), value.string());
589    if (key == "max-duration") {
590        int64_t max_duration_ms;
591        if (safe_strtoi64(value.string(), &max_duration_ms)) {
592            return setParamMaxFileDurationUs(1000LL * max_duration_ms);
593        }
594    } else if (key == "max-filesize") {
595        int64_t max_filesize_bytes;
596        if (safe_strtoi64(value.string(), &max_filesize_bytes)) {
597            return setParamMaxFileSizeBytes(max_filesize_bytes);
598        }
599    } else if (key == "interleave-duration-us") {
600        int32_t durationUs;
601        if (safe_strtoi32(value.string(), &durationUs)) {
602            return setParamInterleaveDuration(durationUs);
603        }
604    } else if (key == "param-movie-time-scale") {
605        int32_t timeScale;
606        if (safe_strtoi32(value.string(), &timeScale)) {
607            return setParamMovieTimeScale(timeScale);
608        }
609    } else if (key == "param-use-64bit-offset") {
610        int32_t use64BitOffset;
611        if (safe_strtoi32(value.string(), &use64BitOffset)) {
612            return setParam64BitFileOffset(use64BitOffset != 0);
613        }
614    } else if (key == "param-geotag-longitude") {
615        int64_t longitudex10000;
616        if (safe_strtoi64(value.string(), &longitudex10000)) {
617            return setParamGeoDataLongitude(longitudex10000);
618        }
619    } else if (key == "param-geotag-latitude") {
620        int64_t latitudex10000;
621        if (safe_strtoi64(value.string(), &latitudex10000)) {
622            return setParamGeoDataLatitude(latitudex10000);
623        }
624    } else if (key == "param-track-time-status") {
625        int64_t timeDurationUs;
626        if (safe_strtoi64(value.string(), &timeDurationUs)) {
627            return setParamTrackTimeStatus(timeDurationUs);
628        }
629    } else if (key == "audio-param-sampling-rate") {
630        int32_t sampling_rate;
631        if (safe_strtoi32(value.string(), &sampling_rate)) {
632            return setParamAudioSamplingRate(sampling_rate);
633        }
634    } else if (key == "audio-param-number-of-channels") {
635        int32_t number_of_channels;
636        if (safe_strtoi32(value.string(), &number_of_channels)) {
637            return setParamAudioNumberOfChannels(number_of_channels);
638        }
639    } else if (key == "audio-param-encoding-bitrate") {
640        int32_t audio_bitrate;
641        if (safe_strtoi32(value.string(), &audio_bitrate)) {
642            return setParamAudioEncodingBitRate(audio_bitrate);
643        }
644    } else if (key == "audio-param-time-scale") {
645        int32_t timeScale;
646        if (safe_strtoi32(value.string(), &timeScale)) {
647            return setParamAudioTimeScale(timeScale);
648        }
649    } else if (key == "video-param-encoding-bitrate") {
650        int32_t video_bitrate;
651        if (safe_strtoi32(value.string(), &video_bitrate)) {
652            return setParamVideoEncodingBitRate(video_bitrate);
653        }
654    } else if (key == "video-param-rotation-angle-degrees") {
655        int32_t degrees;
656        if (safe_strtoi32(value.string(), &degrees)) {
657            return setParamVideoRotation(degrees);
658        }
659    } else if (key == "video-param-i-frames-interval") {
660        int32_t seconds;
661        if (safe_strtoi32(value.string(), &seconds)) {
662            return setParamVideoIFramesInterval(seconds);
663        }
664    } else if (key == "video-param-encoder-profile") {
665        int32_t profile;
666        if (safe_strtoi32(value.string(), &profile)) {
667            return setParamVideoEncoderProfile(profile);
668        }
669    } else if (key == "video-param-encoder-level") {
670        int32_t level;
671        if (safe_strtoi32(value.string(), &level)) {
672            return setParamVideoEncoderLevel(level);
673        }
674    } else if (key == "video-param-camera-id") {
675        int32_t cameraId;
676        if (safe_strtoi32(value.string(), &cameraId)) {
677            return setParamVideoCameraId(cameraId);
678        }
679    } else if (key == "video-param-time-scale") {
680        int32_t timeScale;
681        if (safe_strtoi32(value.string(), &timeScale)) {
682            return setParamVideoTimeScale(timeScale);
683        }
684    } else if (key == "time-lapse-enable") {
685        int32_t timeLapseEnable;
686        if (safe_strtoi32(value.string(), &timeLapseEnable)) {
687            return setParamTimeLapseEnable(timeLapseEnable);
688        }
689    } else if (key == "time-between-time-lapse-frame-capture") {
690        int64_t timeBetweenTimeLapseFrameCaptureUs;
691        if (safe_strtoi64(value.string(), &timeBetweenTimeLapseFrameCaptureUs)) {
692            return setParamTimeBetweenTimeLapseFrameCapture(
693                    timeBetweenTimeLapseFrameCaptureUs);
694        }
695    } else {
696        ALOGE("setParameter: failed to find key %s", key.string());
697    }
698    return BAD_VALUE;
699}
700
701status_t StagefrightRecorder::setParameters(const String8 &params) {
702    ALOGV("setParameters: %s", params.string());
703    const char *cparams = params.string();
704    const char *key_start = cparams;
705    for (;;) {
706        const char *equal_pos = strchr(key_start, '=');
707        if (equal_pos == NULL) {
708            ALOGE("Parameters %s miss a value", cparams);
709            return BAD_VALUE;
710        }
711        String8 key(key_start, equal_pos - key_start);
712        TrimString(&key);
713        if (key.length() == 0) {
714            ALOGE("Parameters %s contains an empty key", cparams);
715            return BAD_VALUE;
716        }
717        const char *value_start = equal_pos + 1;
718        const char *semicolon_pos = strchr(value_start, ';');
719        String8 value;
720        if (semicolon_pos == NULL) {
721            value.setTo(value_start);
722        } else {
723            value.setTo(value_start, semicolon_pos - value_start);
724        }
725        if (setParameter(key, value) != OK) {
726            return BAD_VALUE;
727        }
728        if (semicolon_pos == NULL) {
729            break;  // Reaches the end
730        }
731        key_start = semicolon_pos + 1;
732    }
733    return OK;
734}
735
736status_t StagefrightRecorder::setListener(const sp<IMediaRecorderClient> &listener) {
737    mListener = listener;
738
739    return OK;
740}
741
742status_t StagefrightRecorder::setClientName(const String16& clientName) {
743    mClientName = clientName;
744
745    return OK;
746}
747
748status_t StagefrightRecorder::prepareInternal() {
749    ALOGV("prepare");
750    if (mOutputFd < 0) {
751        ALOGE("Output file descriptor is invalid");
752        return INVALID_OPERATION;
753    }
754
755    // Get UID here for permission checking
756    mClientUid = IPCThreadState::self()->getCallingUid();
757
758    status_t status = OK;
759
760    switch (mOutputFormat) {
761        case OUTPUT_FORMAT_DEFAULT:
762        case OUTPUT_FORMAT_THREE_GPP:
763        case OUTPUT_FORMAT_MPEG_4:
764        case OUTPUT_FORMAT_WEBM:
765            status = setupMPEG4orWEBMRecording();
766            break;
767
768        case OUTPUT_FORMAT_AMR_NB:
769        case OUTPUT_FORMAT_AMR_WB:
770            status = setupAMRRecording();
771            break;
772
773        case OUTPUT_FORMAT_AAC_ADIF:
774        case OUTPUT_FORMAT_AAC_ADTS:
775            status = setupAACRecording();
776            break;
777
778        case OUTPUT_FORMAT_RTP_AVP:
779            status = setupRTPRecording();
780            break;
781
782        case OUTPUT_FORMAT_MPEG2TS:
783            status = setupMPEG2TSRecording();
784            break;
785
786        default:
787            ALOGE("Unsupported output file format: %d", mOutputFormat);
788            status = UNKNOWN_ERROR;
789            break;
790    }
791
792    return status;
793}
794
795status_t StagefrightRecorder::prepare() {
796    if (mVideoSource == VIDEO_SOURCE_SURFACE) {
797        return prepareInternal();
798    }
799    return OK;
800}
801
802status_t StagefrightRecorder::start() {
803    ALOGV("start");
804    if (mOutputFd < 0) {
805        ALOGE("Output file descriptor is invalid");
806        return INVALID_OPERATION;
807    }
808
809    status_t status = OK;
810
811    if (mVideoSource != VIDEO_SOURCE_SURFACE) {
812        status = prepareInternal();
813        if (status != OK) {
814            return status;
815        }
816    }
817
818    if (mWriter == NULL) {
819        ALOGE("File writer is not avaialble");
820        return UNKNOWN_ERROR;
821    }
822
823    switch (mOutputFormat) {
824        case OUTPUT_FORMAT_DEFAULT:
825        case OUTPUT_FORMAT_THREE_GPP:
826        case OUTPUT_FORMAT_MPEG_4:
827        case OUTPUT_FORMAT_WEBM:
828        {
829            bool isMPEG4 = true;
830            if (mOutputFormat == OUTPUT_FORMAT_WEBM) {
831                isMPEG4 = false;
832            }
833            sp<MetaData> meta = new MetaData;
834            setupMPEG4orWEBMMetaData(&meta);
835            status = mWriter->start(meta.get());
836            break;
837        }
838
839        case OUTPUT_FORMAT_AMR_NB:
840        case OUTPUT_FORMAT_AMR_WB:
841        case OUTPUT_FORMAT_AAC_ADIF:
842        case OUTPUT_FORMAT_AAC_ADTS:
843        case OUTPUT_FORMAT_RTP_AVP:
844        case OUTPUT_FORMAT_MPEG2TS:
845        {
846            status = mWriter->start();
847            break;
848        }
849
850        default:
851        {
852            ALOGE("Unsupported output file format: %d", mOutputFormat);
853            status = UNKNOWN_ERROR;
854            break;
855        }
856    }
857
858    if (status != OK) {
859        mWriter.clear();
860        mWriter = NULL;
861    }
862
863    if ((status == OK) && (!mStarted)) {
864        mStarted = true;
865
866        uint32_t params = IMediaPlayerService::kBatteryDataCodecStarted;
867        if (mAudioSource != AUDIO_SOURCE_CNT) {
868            params |= IMediaPlayerService::kBatteryDataTrackAudio;
869        }
870        if (mVideoSource != VIDEO_SOURCE_LIST_END) {
871            params |= IMediaPlayerService::kBatteryDataTrackVideo;
872        }
873
874        addBatteryData(params);
875    }
876
877    return status;
878}
879
880sp<MediaSource> StagefrightRecorder::createAudioSource() {
881    sp<AudioSource> audioSource =
882        new AudioSource(
883                mAudioSource,
884                mSampleRate,
885                mAudioChannels);
886
887    status_t err = audioSource->initCheck();
888
889    if (err != OK) {
890        ALOGE("audio source is not initialized");
891        return NULL;
892    }
893
894    sp<AMessage> format = new AMessage;
895    const char *mime;
896    switch (mAudioEncoder) {
897        case AUDIO_ENCODER_AMR_NB:
898        case AUDIO_ENCODER_DEFAULT:
899            format->setString("mime", MEDIA_MIMETYPE_AUDIO_AMR_NB);
900            break;
901        case AUDIO_ENCODER_AMR_WB:
902            format->setString("mime", MEDIA_MIMETYPE_AUDIO_AMR_WB);
903            break;
904        case AUDIO_ENCODER_AAC:
905            format->setString("mime", MEDIA_MIMETYPE_AUDIO_AAC);
906            format->setInt32("aac-profile", OMX_AUDIO_AACObjectLC);
907            break;
908        case AUDIO_ENCODER_HE_AAC:
909            format->setString("mime", MEDIA_MIMETYPE_AUDIO_AAC);
910            format->setInt32("aac-profile", OMX_AUDIO_AACObjectHE);
911            break;
912        case AUDIO_ENCODER_AAC_ELD:
913            format->setString("mime", MEDIA_MIMETYPE_AUDIO_AAC);
914            format->setInt32("aac-profile", OMX_AUDIO_AACObjectELD);
915            break;
916
917        default:
918            ALOGE("Unknown audio encoder: %d", mAudioEncoder);
919            return NULL;
920    }
921
922    int32_t maxInputSize;
923    CHECK(audioSource->getFormat()->findInt32(
924                kKeyMaxInputSize, &maxInputSize));
925
926    format->setInt32("max-input-size", maxInputSize);
927    format->setInt32("channel-count", mAudioChannels);
928    format->setInt32("sample-rate", mSampleRate);
929    format->setInt32("bitrate", mAudioBitRate);
930    if (mAudioTimeScale > 0) {
931        format->setInt32("time-scale", mAudioTimeScale);
932    }
933
934    sp<MediaSource> audioEncoder =
935            MediaCodecSource::Create(mLooper, format, audioSource);
936    mAudioSourceNode = audioSource;
937
938    if (audioEncoder == NULL) {
939        ALOGE("Failed to create audio encoder");
940    }
941
942    return audioEncoder;
943}
944
945status_t StagefrightRecorder::setupAACRecording() {
946    // FIXME:
947    // Add support for OUTPUT_FORMAT_AAC_ADIF
948    CHECK_EQ(mOutputFormat, OUTPUT_FORMAT_AAC_ADTS);
949
950    CHECK(mAudioEncoder == AUDIO_ENCODER_AAC ||
951          mAudioEncoder == AUDIO_ENCODER_HE_AAC ||
952          mAudioEncoder == AUDIO_ENCODER_AAC_ELD);
953    CHECK(mAudioSource != AUDIO_SOURCE_CNT);
954
955    mWriter = new AACWriter(mOutputFd);
956    return setupRawAudioRecording();
957}
958
959status_t StagefrightRecorder::setupAMRRecording() {
960    CHECK(mOutputFormat == OUTPUT_FORMAT_AMR_NB ||
961          mOutputFormat == OUTPUT_FORMAT_AMR_WB);
962
963    if (mOutputFormat == OUTPUT_FORMAT_AMR_NB) {
964        if (mAudioEncoder != AUDIO_ENCODER_DEFAULT &&
965            mAudioEncoder != AUDIO_ENCODER_AMR_NB) {
966            ALOGE("Invalid encoder %d used for AMRNB recording",
967                    mAudioEncoder);
968            return BAD_VALUE;
969        }
970    } else {  // mOutputFormat must be OUTPUT_FORMAT_AMR_WB
971        if (mAudioEncoder != AUDIO_ENCODER_AMR_WB) {
972            ALOGE("Invlaid encoder %d used for AMRWB recording",
973                    mAudioEncoder);
974            return BAD_VALUE;
975        }
976    }
977
978    mWriter = new AMRWriter(mOutputFd);
979    return setupRawAudioRecording();
980}
981
982status_t StagefrightRecorder::setupRawAudioRecording() {
983    if (mAudioSource >= AUDIO_SOURCE_CNT) {
984        ALOGE("Invalid audio source: %d", mAudioSource);
985        return BAD_VALUE;
986    }
987
988    status_t status = BAD_VALUE;
989    if (OK != (status = checkAudioEncoderCapabilities())) {
990        return status;
991    }
992
993    sp<MediaSource> audioEncoder = createAudioSource();
994    if (audioEncoder == NULL) {
995        return UNKNOWN_ERROR;
996    }
997
998    CHECK(mWriter != 0);
999    mWriter->addSource(audioEncoder);
1000
1001    if (mMaxFileDurationUs != 0) {
1002        mWriter->setMaxFileDuration(mMaxFileDurationUs);
1003    }
1004    if (mMaxFileSizeBytes != 0) {
1005        mWriter->setMaxFileSize(mMaxFileSizeBytes);
1006    }
1007    mWriter->setListener(mListener);
1008
1009    return OK;
1010}
1011
1012status_t StagefrightRecorder::setupRTPRecording() {
1013    CHECK_EQ(mOutputFormat, OUTPUT_FORMAT_RTP_AVP);
1014
1015    if ((mAudioSource != AUDIO_SOURCE_CNT
1016                && mVideoSource != VIDEO_SOURCE_LIST_END)
1017            || (mAudioSource == AUDIO_SOURCE_CNT
1018                && mVideoSource == VIDEO_SOURCE_LIST_END)) {
1019        // Must have exactly one source.
1020        return BAD_VALUE;
1021    }
1022
1023    if (mOutputFd < 0) {
1024        return BAD_VALUE;
1025    }
1026
1027    sp<MediaSource> source;
1028
1029    if (mAudioSource != AUDIO_SOURCE_CNT) {
1030        source = createAudioSource();
1031    } else {
1032        setDefaultVideoEncoderIfNecessary();
1033
1034        sp<MediaSource> mediaSource;
1035        status_t err = setupMediaSource(&mediaSource);
1036        if (err != OK) {
1037            return err;
1038        }
1039
1040        err = setupVideoEncoder(mediaSource, &source);
1041        if (err != OK) {
1042            return err;
1043        }
1044    }
1045
1046    mWriter = new ARTPWriter(mOutputFd);
1047    mWriter->addSource(source);
1048    mWriter->setListener(mListener);
1049
1050    return OK;
1051}
1052
1053status_t StagefrightRecorder::setupMPEG2TSRecording() {
1054    CHECK_EQ(mOutputFormat, OUTPUT_FORMAT_MPEG2TS);
1055
1056    sp<MediaWriter> writer = new MPEG2TSWriter(mOutputFd);
1057
1058    if (mAudioSource != AUDIO_SOURCE_CNT) {
1059        if (mAudioEncoder != AUDIO_ENCODER_AAC &&
1060            mAudioEncoder != AUDIO_ENCODER_HE_AAC &&
1061            mAudioEncoder != AUDIO_ENCODER_AAC_ELD) {
1062            return ERROR_UNSUPPORTED;
1063        }
1064
1065        status_t err = setupAudioEncoder(writer);
1066
1067        if (err != OK) {
1068            return err;
1069        }
1070    }
1071
1072    if (mVideoSource < VIDEO_SOURCE_LIST_END) {
1073        if (mVideoEncoder != VIDEO_ENCODER_H264) {
1074            ALOGE("MPEG2TS recording only supports H.264 encoding!");
1075            return ERROR_UNSUPPORTED;
1076        }
1077
1078        sp<MediaSource> mediaSource;
1079        status_t err = setupMediaSource(&mediaSource);
1080        if (err != OK) {
1081            return err;
1082        }
1083
1084        sp<MediaSource> encoder;
1085        err = setupVideoEncoder(mediaSource, &encoder);
1086
1087        if (err != OK) {
1088            return err;
1089        }
1090
1091        writer->addSource(encoder);
1092    }
1093
1094    if (mMaxFileDurationUs != 0) {
1095        writer->setMaxFileDuration(mMaxFileDurationUs);
1096    }
1097
1098    if (mMaxFileSizeBytes != 0) {
1099        writer->setMaxFileSize(mMaxFileSizeBytes);
1100    }
1101
1102    mWriter = writer;
1103
1104    return OK;
1105}
1106
1107void StagefrightRecorder::clipVideoFrameRate() {
1108    ALOGV("clipVideoFrameRate: encoder %d", mVideoEncoder);
1109    if (mFrameRate == -1) {
1110        mFrameRate = mEncoderProfiles->getCamcorderProfileParamByName(
1111                "vid.fps", mCameraId, CAMCORDER_QUALITY_LOW);
1112        ALOGW("Using default video fps %d", mFrameRate);
1113    }
1114
1115    int minFrameRate = mEncoderProfiles->getVideoEncoderParamByName(
1116                        "enc.vid.fps.min", mVideoEncoder);
1117    int maxFrameRate = mEncoderProfiles->getVideoEncoderParamByName(
1118                        "enc.vid.fps.max", mVideoEncoder);
1119    if (mFrameRate < minFrameRate && minFrameRate != -1) {
1120        ALOGW("Intended video encoding frame rate (%d fps) is too small"
1121             " and will be set to (%d fps)", mFrameRate, minFrameRate);
1122        mFrameRate = minFrameRate;
1123    } else if (mFrameRate > maxFrameRate && maxFrameRate != -1) {
1124        ALOGW("Intended video encoding frame rate (%d fps) is too large"
1125             " and will be set to (%d fps)", mFrameRate, maxFrameRate);
1126        mFrameRate = maxFrameRate;
1127    }
1128}
1129
1130void StagefrightRecorder::clipVideoBitRate() {
1131    ALOGV("clipVideoBitRate: encoder %d", mVideoEncoder);
1132    int minBitRate = mEncoderProfiles->getVideoEncoderParamByName(
1133                        "enc.vid.bps.min", mVideoEncoder);
1134    int maxBitRate = mEncoderProfiles->getVideoEncoderParamByName(
1135                        "enc.vid.bps.max", mVideoEncoder);
1136    if (mVideoBitRate < minBitRate && minBitRate != -1) {
1137        ALOGW("Intended video encoding bit rate (%d bps) is too small"
1138             " and will be set to (%d bps)", mVideoBitRate, minBitRate);
1139        mVideoBitRate = minBitRate;
1140    } else if (mVideoBitRate > maxBitRate && maxBitRate != -1) {
1141        ALOGW("Intended video encoding bit rate (%d bps) is too large"
1142             " and will be set to (%d bps)", mVideoBitRate, maxBitRate);
1143        mVideoBitRate = maxBitRate;
1144    }
1145}
1146
1147void StagefrightRecorder::clipVideoFrameWidth() {
1148    ALOGV("clipVideoFrameWidth: encoder %d", mVideoEncoder);
1149    int minFrameWidth = mEncoderProfiles->getVideoEncoderParamByName(
1150                        "enc.vid.width.min", mVideoEncoder);
1151    int maxFrameWidth = mEncoderProfiles->getVideoEncoderParamByName(
1152                        "enc.vid.width.max", mVideoEncoder);
1153    if (mVideoWidth < minFrameWidth && minFrameWidth != -1) {
1154        ALOGW("Intended video encoding frame width (%d) is too small"
1155             " and will be set to (%d)", mVideoWidth, minFrameWidth);
1156        mVideoWidth = minFrameWidth;
1157    } else if (mVideoWidth > maxFrameWidth && maxFrameWidth != -1) {
1158        ALOGW("Intended video encoding frame width (%d) is too large"
1159             " and will be set to (%d)", mVideoWidth, maxFrameWidth);
1160        mVideoWidth = maxFrameWidth;
1161    }
1162}
1163
1164status_t StagefrightRecorder::checkVideoEncoderCapabilities(
1165        bool *supportsCameraSourceMetaDataMode) {
1166    /* hardware codecs must support camera source meta data mode */
1167    Vector<CodecCapabilities> codecs;
1168    OMXClient client;
1169    CHECK_EQ(client.connect(), (status_t)OK);
1170    QueryCodecs(
1171            client.interface(),
1172            (mVideoEncoder == VIDEO_ENCODER_H263 ? MEDIA_MIMETYPE_VIDEO_H263 :
1173             mVideoEncoder == VIDEO_ENCODER_MPEG_4_SP ? MEDIA_MIMETYPE_VIDEO_MPEG4 :
1174             mVideoEncoder == VIDEO_ENCODER_H264 ? MEDIA_MIMETYPE_VIDEO_AVC : ""),
1175            false /* decoder */, true /* hwCodec */, &codecs);
1176    *supportsCameraSourceMetaDataMode = codecs.size() > 0;
1177    ALOGV("encoder %s camera source meta-data mode",
1178            *supportsCameraSourceMetaDataMode ? "supports" : "DOES NOT SUPPORT");
1179
1180    if (!mCaptureTimeLapse) {
1181        // Dont clip for time lapse capture as encoder will have enough
1182        // time to encode because of slow capture rate of time lapse.
1183        clipVideoBitRate();
1184        clipVideoFrameRate();
1185        clipVideoFrameWidth();
1186        clipVideoFrameHeight();
1187        setDefaultProfileIfNecessary();
1188    }
1189    return OK;
1190}
1191
1192// Set to use AVC baseline profile if the encoding parameters matches
1193// CAMCORDER_QUALITY_LOW profile; this is for the sake of MMS service.
1194void StagefrightRecorder::setDefaultProfileIfNecessary() {
1195    ALOGV("setDefaultProfileIfNecessary");
1196
1197    camcorder_quality quality = CAMCORDER_QUALITY_LOW;
1198
1199    int64_t durationUs   = mEncoderProfiles->getCamcorderProfileParamByName(
1200                                "duration", mCameraId, quality) * 1000000LL;
1201
1202    int fileFormat       = mEncoderProfiles->getCamcorderProfileParamByName(
1203                                "file.format", mCameraId, quality);
1204
1205    int videoCodec       = mEncoderProfiles->getCamcorderProfileParamByName(
1206                                "vid.codec", mCameraId, quality);
1207
1208    int videoBitRate     = mEncoderProfiles->getCamcorderProfileParamByName(
1209                                "vid.bps", mCameraId, quality);
1210
1211    int videoFrameRate   = mEncoderProfiles->getCamcorderProfileParamByName(
1212                                "vid.fps", mCameraId, quality);
1213
1214    int videoFrameWidth  = mEncoderProfiles->getCamcorderProfileParamByName(
1215                                "vid.width", mCameraId, quality);
1216
1217    int videoFrameHeight = mEncoderProfiles->getCamcorderProfileParamByName(
1218                                "vid.height", mCameraId, quality);
1219
1220    int audioCodec       = mEncoderProfiles->getCamcorderProfileParamByName(
1221                                "aud.codec", mCameraId, quality);
1222
1223    int audioBitRate     = mEncoderProfiles->getCamcorderProfileParamByName(
1224                                "aud.bps", mCameraId, quality);
1225
1226    int audioSampleRate  = mEncoderProfiles->getCamcorderProfileParamByName(
1227                                "aud.hz", mCameraId, quality);
1228
1229    int audioChannels    = mEncoderProfiles->getCamcorderProfileParamByName(
1230                                "aud.ch", mCameraId, quality);
1231
1232    if (durationUs == mMaxFileDurationUs &&
1233        fileFormat == mOutputFormat &&
1234        videoCodec == mVideoEncoder &&
1235        videoBitRate == mVideoBitRate &&
1236        videoFrameRate == mFrameRate &&
1237        videoFrameWidth == mVideoWidth &&
1238        videoFrameHeight == mVideoHeight &&
1239        audioCodec == mAudioEncoder &&
1240        audioBitRate == mAudioBitRate &&
1241        audioSampleRate == mSampleRate &&
1242        audioChannels == mAudioChannels) {
1243        if (videoCodec == VIDEO_ENCODER_H264) {
1244            ALOGI("Force to use AVC baseline profile");
1245            setParamVideoEncoderProfile(OMX_VIDEO_AVCProfileBaseline);
1246        }
1247    }
1248}
1249
1250void StagefrightRecorder::setDefaultVideoEncoderIfNecessary() {
1251    if (mVideoEncoder == VIDEO_ENCODER_DEFAULT) {
1252        if (mOutputFormat == OUTPUT_FORMAT_WEBM) {
1253            // default to VP8 for WEBM recording
1254            mVideoEncoder = VIDEO_ENCODER_VP8;
1255        } else {
1256            // pick the default encoder for CAMCORDER_QUALITY_LOW
1257            int videoCodec = mEncoderProfiles->getCamcorderProfileParamByName(
1258                    "vid.codec", mCameraId, CAMCORDER_QUALITY_LOW);
1259
1260            if (videoCodec > VIDEO_ENCODER_DEFAULT &&
1261                videoCodec < VIDEO_ENCODER_LIST_END) {
1262                mVideoEncoder = (video_encoder)videoCodec;
1263            } else {
1264                // default to H.264 if camcorder profile not available
1265                mVideoEncoder = VIDEO_ENCODER_H264;
1266            }
1267        }
1268    }
1269}
1270
1271status_t StagefrightRecorder::checkAudioEncoderCapabilities() {
1272    clipAudioBitRate();
1273    clipAudioSampleRate();
1274    clipNumberOfAudioChannels();
1275    return OK;
1276}
1277
1278void StagefrightRecorder::clipAudioBitRate() {
1279    ALOGV("clipAudioBitRate: encoder %d", mAudioEncoder);
1280
1281    int minAudioBitRate =
1282            mEncoderProfiles->getAudioEncoderParamByName(
1283                "enc.aud.bps.min", mAudioEncoder);
1284    if (minAudioBitRate != -1 && mAudioBitRate < minAudioBitRate) {
1285        ALOGW("Intended audio encoding bit rate (%d) is too small"
1286            " and will be set to (%d)", mAudioBitRate, minAudioBitRate);
1287        mAudioBitRate = minAudioBitRate;
1288    }
1289
1290    int maxAudioBitRate =
1291            mEncoderProfiles->getAudioEncoderParamByName(
1292                "enc.aud.bps.max", mAudioEncoder);
1293    if (maxAudioBitRate != -1 && mAudioBitRate > maxAudioBitRate) {
1294        ALOGW("Intended audio encoding bit rate (%d) is too large"
1295            " and will be set to (%d)", mAudioBitRate, maxAudioBitRate);
1296        mAudioBitRate = maxAudioBitRate;
1297    }
1298}
1299
1300void StagefrightRecorder::clipAudioSampleRate() {
1301    ALOGV("clipAudioSampleRate: encoder %d", mAudioEncoder);
1302
1303    int minSampleRate =
1304            mEncoderProfiles->getAudioEncoderParamByName(
1305                "enc.aud.hz.min", mAudioEncoder);
1306    if (minSampleRate != -1 && mSampleRate < minSampleRate) {
1307        ALOGW("Intended audio sample rate (%d) is too small"
1308            " and will be set to (%d)", mSampleRate, minSampleRate);
1309        mSampleRate = minSampleRate;
1310    }
1311
1312    int maxSampleRate =
1313            mEncoderProfiles->getAudioEncoderParamByName(
1314                "enc.aud.hz.max", mAudioEncoder);
1315    if (maxSampleRate != -1 && mSampleRate > maxSampleRate) {
1316        ALOGW("Intended audio sample rate (%d) is too large"
1317            " and will be set to (%d)", mSampleRate, maxSampleRate);
1318        mSampleRate = maxSampleRate;
1319    }
1320}
1321
1322void StagefrightRecorder::clipNumberOfAudioChannels() {
1323    ALOGV("clipNumberOfAudioChannels: encoder %d", mAudioEncoder);
1324
1325    int minChannels =
1326            mEncoderProfiles->getAudioEncoderParamByName(
1327                "enc.aud.ch.min", mAudioEncoder);
1328    if (minChannels != -1 && mAudioChannels < minChannels) {
1329        ALOGW("Intended number of audio channels (%d) is too small"
1330            " and will be set to (%d)", mAudioChannels, minChannels);
1331        mAudioChannels = minChannels;
1332    }
1333
1334    int maxChannels =
1335            mEncoderProfiles->getAudioEncoderParamByName(
1336                "enc.aud.ch.max", mAudioEncoder);
1337    if (maxChannels != -1 && mAudioChannels > maxChannels) {
1338        ALOGW("Intended number of audio channels (%d) is too large"
1339            " and will be set to (%d)", mAudioChannels, maxChannels);
1340        mAudioChannels = maxChannels;
1341    }
1342}
1343
1344void StagefrightRecorder::clipVideoFrameHeight() {
1345    ALOGV("clipVideoFrameHeight: encoder %d", mVideoEncoder);
1346    int minFrameHeight = mEncoderProfiles->getVideoEncoderParamByName(
1347                        "enc.vid.height.min", mVideoEncoder);
1348    int maxFrameHeight = mEncoderProfiles->getVideoEncoderParamByName(
1349                        "enc.vid.height.max", mVideoEncoder);
1350    if (minFrameHeight != -1 && mVideoHeight < minFrameHeight) {
1351        ALOGW("Intended video encoding frame height (%d) is too small"
1352             " and will be set to (%d)", mVideoHeight, minFrameHeight);
1353        mVideoHeight = minFrameHeight;
1354    } else if (maxFrameHeight != -1 && mVideoHeight > maxFrameHeight) {
1355        ALOGW("Intended video encoding frame height (%d) is too large"
1356             " and will be set to (%d)", mVideoHeight, maxFrameHeight);
1357        mVideoHeight = maxFrameHeight;
1358    }
1359}
1360
1361// Set up the appropriate MediaSource depending on the chosen option
1362status_t StagefrightRecorder::setupMediaSource(
1363                      sp<MediaSource> *mediaSource) {
1364    if (mVideoSource == VIDEO_SOURCE_DEFAULT
1365            || mVideoSource == VIDEO_SOURCE_CAMERA) {
1366        sp<CameraSource> cameraSource;
1367        status_t err = setupCameraSource(&cameraSource);
1368        if (err != OK) {
1369            return err;
1370        }
1371        *mediaSource = cameraSource;
1372    } else if (mVideoSource == VIDEO_SOURCE_SURFACE) {
1373        *mediaSource = NULL;
1374    } else {
1375        return INVALID_OPERATION;
1376    }
1377    return OK;
1378}
1379
1380status_t StagefrightRecorder::setupCameraSource(
1381        sp<CameraSource> *cameraSource) {
1382    status_t err = OK;
1383    bool encoderSupportsCameraSourceMetaDataMode;
1384    if ((err = checkVideoEncoderCapabilities(
1385                &encoderSupportsCameraSourceMetaDataMode)) != OK) {
1386        return err;
1387    }
1388    Size videoSize;
1389    videoSize.width = mVideoWidth;
1390    videoSize.height = mVideoHeight;
1391    if (mCaptureTimeLapse) {
1392        if (mTimeBetweenTimeLapseFrameCaptureUs < 0) {
1393            ALOGE("Invalid mTimeBetweenTimeLapseFrameCaptureUs value: %lld",
1394                mTimeBetweenTimeLapseFrameCaptureUs);
1395            return BAD_VALUE;
1396        }
1397
1398        mCameraSourceTimeLapse = CameraSourceTimeLapse::CreateFromCamera(
1399                mCamera, mCameraProxy, mCameraId, mClientName, mClientUid,
1400                videoSize, mFrameRate, mPreviewSurface,
1401                mTimeBetweenTimeLapseFrameCaptureUs,
1402                encoderSupportsCameraSourceMetaDataMode);
1403        *cameraSource = mCameraSourceTimeLapse;
1404    } else {
1405        *cameraSource = CameraSource::CreateFromCamera(
1406                mCamera, mCameraProxy, mCameraId, mClientName, mClientUid,
1407                videoSize, mFrameRate,
1408                mPreviewSurface, encoderSupportsCameraSourceMetaDataMode);
1409    }
1410    mCamera.clear();
1411    mCameraProxy.clear();
1412    if (*cameraSource == NULL) {
1413        return UNKNOWN_ERROR;
1414    }
1415
1416    if ((*cameraSource)->initCheck() != OK) {
1417        (*cameraSource).clear();
1418        *cameraSource = NULL;
1419        return NO_INIT;
1420    }
1421
1422    // When frame rate is not set, the actual frame rate will be set to
1423    // the current frame rate being used.
1424    if (mFrameRate == -1) {
1425        int32_t frameRate = 0;
1426        CHECK ((*cameraSource)->getFormat()->findInt32(
1427                    kKeyFrameRate, &frameRate));
1428        ALOGI("Frame rate is not explicitly set. Use the current frame "
1429             "rate (%d fps)", frameRate);
1430        mFrameRate = frameRate;
1431    }
1432
1433    CHECK(mFrameRate != -1);
1434
1435    mIsMetaDataStoredInVideoBuffers =
1436        (*cameraSource)->isMetaDataStoredInVideoBuffers();
1437
1438    return OK;
1439}
1440
1441status_t StagefrightRecorder::setupVideoEncoder(
1442        sp<MediaSource> cameraSource,
1443        sp<MediaSource> *source) {
1444    source->clear();
1445
1446    sp<AMessage> format = new AMessage();
1447
1448    switch (mVideoEncoder) {
1449        case VIDEO_ENCODER_H263:
1450            format->setString("mime", MEDIA_MIMETYPE_VIDEO_H263);
1451            break;
1452
1453        case VIDEO_ENCODER_MPEG_4_SP:
1454            format->setString("mime", MEDIA_MIMETYPE_VIDEO_MPEG4);
1455            break;
1456
1457        case VIDEO_ENCODER_H264:
1458            format->setString("mime", MEDIA_MIMETYPE_VIDEO_AVC);
1459            break;
1460
1461        case VIDEO_ENCODER_VP8:
1462            format->setString("mime", MEDIA_MIMETYPE_VIDEO_VP8);
1463            break;
1464
1465        default:
1466            CHECK(!"Should not be here, unsupported video encoding.");
1467            break;
1468    }
1469
1470    if (cameraSource != NULL) {
1471        sp<MetaData> meta = cameraSource->getFormat();
1472
1473        int32_t width, height, stride, sliceHeight, colorFormat;
1474        CHECK(meta->findInt32(kKeyWidth, &width));
1475        CHECK(meta->findInt32(kKeyHeight, &height));
1476        CHECK(meta->findInt32(kKeyStride, &stride));
1477        CHECK(meta->findInt32(kKeySliceHeight, &sliceHeight));
1478        CHECK(meta->findInt32(kKeyColorFormat, &colorFormat));
1479
1480        format->setInt32("width", width);
1481        format->setInt32("height", height);
1482        format->setInt32("stride", stride);
1483        format->setInt32("slice-height", sliceHeight);
1484        format->setInt32("color-format", colorFormat);
1485    } else {
1486        format->setInt32("width", mVideoWidth);
1487        format->setInt32("height", mVideoHeight);
1488        format->setInt32("stride", mVideoWidth);
1489        format->setInt32("slice-height", mVideoWidth);
1490        format->setInt32("color-format", OMX_COLOR_FormatAndroidOpaque);
1491
1492        // set up time lapse/slow motion for surface source
1493        if (mCaptureTimeLapse) {
1494            if (mTimeBetweenTimeLapseFrameCaptureUs <= 0) {
1495                ALOGE("Invalid mTimeBetweenTimeLapseFrameCaptureUs value: %lld",
1496                    mTimeBetweenTimeLapseFrameCaptureUs);
1497                return BAD_VALUE;
1498            }
1499            format->setInt64("time-lapse",
1500                    mTimeBetweenTimeLapseFrameCaptureUs);
1501        }
1502    }
1503
1504    format->setInt32("bitrate", mVideoBitRate);
1505    format->setInt32("frame-rate", mFrameRate);
1506    format->setInt32("i-frame-interval", mIFramesIntervalSec);
1507
1508    if (mVideoTimeScale > 0) {
1509        format->setInt32("time-scale", mVideoTimeScale);
1510    }
1511    if (mVideoEncoderProfile != -1) {
1512        format->setInt32("profile", mVideoEncoderProfile);
1513    }
1514    if (mVideoEncoderLevel != -1) {
1515        format->setInt32("level", mVideoEncoderLevel);
1516    }
1517
1518    uint32_t flags = 0;
1519    if (mIsMetaDataStoredInVideoBuffers) {
1520        flags |= MediaCodecSource::FLAG_USE_METADATA_INPUT;
1521    }
1522
1523    if (cameraSource == NULL) {
1524        flags |= MediaCodecSource::FLAG_USE_SURFACE_INPUT;
1525    }
1526
1527    sp<MediaCodecSource> encoder =
1528            MediaCodecSource::Create(mLooper, format, cameraSource, flags);
1529    if (encoder == NULL) {
1530        ALOGE("Failed to create video encoder");
1531        // When the encoder fails to be created, we need
1532        // release the camera source due to the camera's lock
1533        // and unlock mechanism.
1534        if (cameraSource != NULL) {
1535            cameraSource->stop();
1536        }
1537        return UNKNOWN_ERROR;
1538    }
1539
1540    if (cameraSource == NULL) {
1541        mGraphicBufferProducer = encoder->getGraphicBufferProducer();
1542    }
1543
1544    *source = encoder;
1545
1546    return OK;
1547}
1548
1549status_t StagefrightRecorder::setupAudioEncoder(const sp<MediaWriter>& writer) {
1550    status_t status = BAD_VALUE;
1551    if (OK != (status = checkAudioEncoderCapabilities())) {
1552        return status;
1553    }
1554
1555    switch(mAudioEncoder) {
1556        case AUDIO_ENCODER_AMR_NB:
1557        case AUDIO_ENCODER_AMR_WB:
1558        case AUDIO_ENCODER_AAC:
1559        case AUDIO_ENCODER_HE_AAC:
1560        case AUDIO_ENCODER_AAC_ELD:
1561            break;
1562
1563        default:
1564            ALOGE("Unsupported audio encoder: %d", mAudioEncoder);
1565            return UNKNOWN_ERROR;
1566    }
1567
1568    sp<MediaSource> audioEncoder = createAudioSource();
1569    if (audioEncoder == NULL) {
1570        return UNKNOWN_ERROR;
1571    }
1572
1573    writer->addSource(audioEncoder);
1574    return OK;
1575}
1576
1577status_t StagefrightRecorder::setupMPEG4orWEBMRecording() {
1578    mWriter.clear();
1579    mTotalBitRate = 0;
1580
1581    status_t err = OK;
1582    sp<MediaWriter> writer;
1583    if (mOutputFormat == OUTPUT_FORMAT_WEBM) {
1584        writer = new WebmWriter(mOutputFd);
1585    } else {
1586        writer = new MPEG4Writer(mOutputFd);
1587    }
1588
1589    if (mVideoSource < VIDEO_SOURCE_LIST_END) {
1590        setDefaultVideoEncoderIfNecessary();
1591
1592        sp<MediaSource> mediaSource;
1593        err = setupMediaSource(&mediaSource);
1594        if (err != OK) {
1595            return err;
1596        }
1597
1598        sp<MediaSource> encoder;
1599        err = setupVideoEncoder(mediaSource, &encoder);
1600        if (err != OK) {
1601            return err;
1602        }
1603
1604        writer->addSource(encoder);
1605        mTotalBitRate += mVideoBitRate;
1606    }
1607
1608    if (mOutputFormat != OUTPUT_FORMAT_WEBM) {
1609        // Audio source is added at the end if it exists.
1610        // This help make sure that the "recoding" sound is suppressed for
1611        // camcorder applications in the recorded files.
1612        // TODO Audio source is currently unsupported for webm output; vorbis encoder needed.
1613        if (!mCaptureTimeLapse && (mAudioSource != AUDIO_SOURCE_CNT)) {
1614            err = setupAudioEncoder(writer);
1615            if (err != OK) return err;
1616            mTotalBitRate += mAudioBitRate;
1617        }
1618
1619        if (mInterleaveDurationUs > 0) {
1620            reinterpret_cast<MPEG4Writer *>(writer.get())->
1621                setInterleaveDuration(mInterleaveDurationUs);
1622        }
1623        if (mLongitudex10000 > -3600000 && mLatitudex10000 > -3600000) {
1624            reinterpret_cast<MPEG4Writer *>(writer.get())->
1625                setGeoData(mLatitudex10000, mLongitudex10000);
1626        }
1627    }
1628    if (mMaxFileDurationUs != 0) {
1629        writer->setMaxFileDuration(mMaxFileDurationUs);
1630    }
1631    if (mMaxFileSizeBytes != 0) {
1632        writer->setMaxFileSize(mMaxFileSizeBytes);
1633    }
1634    if (mVideoSource == VIDEO_SOURCE_DEFAULT
1635            || mVideoSource == VIDEO_SOURCE_CAMERA) {
1636        mStartTimeOffsetMs = mEncoderProfiles->getStartTimeOffsetMs(mCameraId);
1637    } else if (mVideoSource == VIDEO_SOURCE_SURFACE) {
1638        // surface source doesn't need large initial delay
1639        mStartTimeOffsetMs = 200;
1640    }
1641    if (mStartTimeOffsetMs > 0) {
1642        writer->setStartTimeOffsetMs(mStartTimeOffsetMs);
1643    }
1644
1645    writer->setListener(mListener);
1646    mWriter = writer;
1647    return OK;
1648}
1649
1650void StagefrightRecorder::setupMPEG4orWEBMMetaData(sp<MetaData> *meta) {
1651    int64_t startTimeUs = systemTime() / 1000;
1652    (*meta)->setInt64(kKeyTime, startTimeUs);
1653    (*meta)->setInt32(kKeyFileType, mOutputFormat);
1654    (*meta)->setInt32(kKeyBitRate, mTotalBitRate);
1655    if (mMovieTimeScale > 0) {
1656        (*meta)->setInt32(kKeyTimeScale, mMovieTimeScale);
1657    }
1658    if (mOutputFormat != OUTPUT_FORMAT_WEBM) {
1659        (*meta)->setInt32(kKey64BitFileOffset, mUse64BitFileOffset);
1660        if (mTrackEveryTimeDurationUs > 0) {
1661            (*meta)->setInt64(kKeyTrackTimeStatus, mTrackEveryTimeDurationUs);
1662        }
1663        if (mRotationDegrees != 0) {
1664            (*meta)->setInt32(kKeyRotation, mRotationDegrees);
1665        }
1666    }
1667}
1668
1669status_t StagefrightRecorder::pause() {
1670    ALOGV("pause");
1671    if (mWriter == NULL) {
1672        return UNKNOWN_ERROR;
1673    }
1674    mWriter->pause();
1675
1676    if (mStarted) {
1677        mStarted = false;
1678
1679        uint32_t params = 0;
1680        if (mAudioSource != AUDIO_SOURCE_CNT) {
1681            params |= IMediaPlayerService::kBatteryDataTrackAudio;
1682        }
1683        if (mVideoSource != VIDEO_SOURCE_LIST_END) {
1684            params |= IMediaPlayerService::kBatteryDataTrackVideo;
1685        }
1686
1687        addBatteryData(params);
1688    }
1689
1690
1691    return OK;
1692}
1693
1694status_t StagefrightRecorder::stop() {
1695    ALOGV("stop");
1696    status_t err = OK;
1697
1698    if (mCaptureTimeLapse && mCameraSourceTimeLapse != NULL) {
1699        mCameraSourceTimeLapse->startQuickReadReturns();
1700        mCameraSourceTimeLapse = NULL;
1701    }
1702
1703    if (mWriter != NULL) {
1704        err = mWriter->stop();
1705        mWriter.clear();
1706    }
1707
1708    mGraphicBufferProducer.clear();
1709
1710    if (mOutputFd >= 0) {
1711        ::close(mOutputFd);
1712        mOutputFd = -1;
1713    }
1714
1715    if (mStarted) {
1716        mStarted = false;
1717
1718        uint32_t params = 0;
1719        if (mAudioSource != AUDIO_SOURCE_CNT) {
1720            params |= IMediaPlayerService::kBatteryDataTrackAudio;
1721        }
1722        if (mVideoSource != VIDEO_SOURCE_LIST_END) {
1723            params |= IMediaPlayerService::kBatteryDataTrackVideo;
1724        }
1725
1726        addBatteryData(params);
1727    }
1728
1729    return err;
1730}
1731
1732status_t StagefrightRecorder::close() {
1733    ALOGV("close");
1734    stop();
1735
1736    return OK;
1737}
1738
1739status_t StagefrightRecorder::reset() {
1740    ALOGV("reset");
1741    stop();
1742
1743    // No audio or video source by default
1744    mAudioSource = AUDIO_SOURCE_CNT;
1745    mVideoSource = VIDEO_SOURCE_LIST_END;
1746
1747    // Default parameters
1748    mOutputFormat  = OUTPUT_FORMAT_THREE_GPP;
1749    mAudioEncoder  = AUDIO_ENCODER_AMR_NB;
1750    mVideoEncoder  = VIDEO_ENCODER_DEFAULT;
1751    mVideoWidth    = 176;
1752    mVideoHeight   = 144;
1753    mFrameRate     = -1;
1754    mVideoBitRate  = 192000;
1755    mSampleRate    = 8000;
1756    mAudioChannels = 1;
1757    mAudioBitRate  = 12200;
1758    mInterleaveDurationUs = 0;
1759    mIFramesIntervalSec = 1;
1760    mAudioSourceNode = 0;
1761    mUse64BitFileOffset = false;
1762    mMovieTimeScale  = -1;
1763    mAudioTimeScale  = -1;
1764    mVideoTimeScale  = -1;
1765    mCameraId        = 0;
1766    mStartTimeOffsetMs = -1;
1767    mVideoEncoderProfile = -1;
1768    mVideoEncoderLevel   = -1;
1769    mMaxFileDurationUs = 0;
1770    mMaxFileSizeBytes = 0;
1771    mTrackEveryTimeDurationUs = 0;
1772    mCaptureTimeLapse = false;
1773    mTimeBetweenTimeLapseFrameCaptureUs = -1;
1774    mCameraSourceTimeLapse = NULL;
1775    mIsMetaDataStoredInVideoBuffers = false;
1776    mEncoderProfiles = MediaProfiles::getInstance();
1777    mRotationDegrees = 0;
1778    mLatitudex10000 = -3600000;
1779    mLongitudex10000 = -3600000;
1780    mTotalBitRate = 0;
1781
1782    mOutputFd = -1;
1783
1784    return OK;
1785}
1786
1787status_t StagefrightRecorder::getMaxAmplitude(int *max) {
1788    ALOGV("getMaxAmplitude");
1789
1790    if (max == NULL) {
1791        ALOGE("Null pointer argument");
1792        return BAD_VALUE;
1793    }
1794
1795    if (mAudioSourceNode != 0) {
1796        *max = mAudioSourceNode->getMaxAmplitude();
1797    } else {
1798        *max = 0;
1799    }
1800
1801    return OK;
1802}
1803
1804status_t StagefrightRecorder::dump(
1805        int fd, const Vector<String16>& args) const {
1806    ALOGV("dump");
1807    const size_t SIZE = 256;
1808    char buffer[SIZE];
1809    String8 result;
1810    if (mWriter != 0) {
1811        mWriter->dump(fd, args);
1812    } else {
1813        snprintf(buffer, SIZE, "   No file writer\n");
1814        result.append(buffer);
1815    }
1816    snprintf(buffer, SIZE, "   Recorder: %p\n", this);
1817    snprintf(buffer, SIZE, "   Output file (fd %d):\n", mOutputFd);
1818    result.append(buffer);
1819    snprintf(buffer, SIZE, "     File format: %d\n", mOutputFormat);
1820    result.append(buffer);
1821    snprintf(buffer, SIZE, "     Max file size (bytes): %" PRId64 "\n", mMaxFileSizeBytes);
1822    result.append(buffer);
1823    snprintf(buffer, SIZE, "     Max file duration (us): %" PRId64 "\n", mMaxFileDurationUs);
1824    result.append(buffer);
1825    snprintf(buffer, SIZE, "     File offset length (bits): %d\n", mUse64BitFileOffset? 64: 32);
1826    result.append(buffer);
1827    snprintf(buffer, SIZE, "     Interleave duration (us): %d\n", mInterleaveDurationUs);
1828    result.append(buffer);
1829    snprintf(buffer, SIZE, "     Progress notification: %" PRId64 " us\n", mTrackEveryTimeDurationUs);
1830    result.append(buffer);
1831    snprintf(buffer, SIZE, "   Audio\n");
1832    result.append(buffer);
1833    snprintf(buffer, SIZE, "     Source: %d\n", mAudioSource);
1834    result.append(buffer);
1835    snprintf(buffer, SIZE, "     Encoder: %d\n", mAudioEncoder);
1836    result.append(buffer);
1837    snprintf(buffer, SIZE, "     Bit rate (bps): %d\n", mAudioBitRate);
1838    result.append(buffer);
1839    snprintf(buffer, SIZE, "     Sampling rate (hz): %d\n", mSampleRate);
1840    result.append(buffer);
1841    snprintf(buffer, SIZE, "     Number of channels: %d\n", mAudioChannels);
1842    result.append(buffer);
1843    snprintf(buffer, SIZE, "     Max amplitude: %d\n", mAudioSourceNode == 0? 0: mAudioSourceNode->getMaxAmplitude());
1844    result.append(buffer);
1845    snprintf(buffer, SIZE, "   Video\n");
1846    result.append(buffer);
1847    snprintf(buffer, SIZE, "     Source: %d\n", mVideoSource);
1848    result.append(buffer);
1849    snprintf(buffer, SIZE, "     Camera Id: %d\n", mCameraId);
1850    result.append(buffer);
1851    snprintf(buffer, SIZE, "     Start time offset (ms): %d\n", mStartTimeOffsetMs);
1852    result.append(buffer);
1853    snprintf(buffer, SIZE, "     Encoder: %d\n", mVideoEncoder);
1854    result.append(buffer);
1855    snprintf(buffer, SIZE, "     Encoder profile: %d\n", mVideoEncoderProfile);
1856    result.append(buffer);
1857    snprintf(buffer, SIZE, "     Encoder level: %d\n", mVideoEncoderLevel);
1858    result.append(buffer);
1859    snprintf(buffer, SIZE, "     I frames interval (s): %d\n", mIFramesIntervalSec);
1860    result.append(buffer);
1861    snprintf(buffer, SIZE, "     Frame size (pixels): %dx%d\n", mVideoWidth, mVideoHeight);
1862    result.append(buffer);
1863    snprintf(buffer, SIZE, "     Frame rate (fps): %d\n", mFrameRate);
1864    result.append(buffer);
1865    snprintf(buffer, SIZE, "     Bit rate (bps): %d\n", mVideoBitRate);
1866    result.append(buffer);
1867    ::write(fd, result.string(), result.size());
1868    return OK;
1869}
1870}  // namespace android
1871