StagefrightRecorder.cpp revision 145bfe5eb3e08c9689c28f6bf3287a979438b04b 
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 <media/MediaProfiles.h>
34#include <camera/ICamera.h>
35#include <camera/Camera.h>
36#include <camera/CameraParameters.h>
37#include <surfaceflinger/ISurface.h>
38#include <utils/Errors.h>
39#include <sys/types.h>
40#include <unistd.h>
41#include <ctype.h>
42
43namespace android {
44
45StagefrightRecorder::StagefrightRecorder()
46    : mWriter(NULL),
47      mOutputFd(-1) {
48
49    LOGV("Constructor");
50    reset();
51}
52
53StagefrightRecorder::~StagefrightRecorder() {
54    LOGV("Destructor");
55    stop();
56
57    if (mOutputFd >= 0) {
58        ::close(mOutputFd);
59        mOutputFd = -1;
60    }
61}
62
63status_t StagefrightRecorder::init() {
64    LOGV("init");
65    return OK;
66}
67
68status_t StagefrightRecorder::setAudioSource(audio_source as) {
69    LOGV("setAudioSource: %d", as);
70    if (as < AUDIO_SOURCE_DEFAULT ||
71        as >= AUDIO_SOURCE_LIST_END) {
72        LOGE("Invalid audio source: %d", as);
73        return BAD_VALUE;
74    }
75
76    if (as == AUDIO_SOURCE_DEFAULT) {
77        mAudioSource = AUDIO_SOURCE_MIC;
78    } else {
79        mAudioSource = as;
80    }
81
82    return OK;
83}
84
85status_t StagefrightRecorder::setVideoSource(video_source vs) {
86    LOGV("setVideoSource: %d", vs);
87    if (vs < VIDEO_SOURCE_DEFAULT ||
88        vs >= VIDEO_SOURCE_LIST_END) {
89        LOGE("Invalid video source: %d", vs);
90        return BAD_VALUE;
91    }
92
93    if (vs == VIDEO_SOURCE_DEFAULT) {
94        mVideoSource = VIDEO_SOURCE_CAMERA;
95    } else {
96        mVideoSource = vs;
97    }
98
99    return OK;
100}
101
102status_t StagefrightRecorder::setOutputFormat(output_format of) {
103    LOGV("setOutputFormat: %d", of);
104    if (of < OUTPUT_FORMAT_DEFAULT ||
105        of >= OUTPUT_FORMAT_LIST_END) {
106        LOGE("Invalid output format: %d", of);
107        return BAD_VALUE;
108    }
109
110    if (of == OUTPUT_FORMAT_DEFAULT) {
111        mOutputFormat = OUTPUT_FORMAT_THREE_GPP;
112    } else {
113        mOutputFormat = of;
114    }
115
116    return OK;
117}
118
119status_t StagefrightRecorder::setAudioEncoder(audio_encoder ae) {
120    LOGV("setAudioEncoder: %d", ae);
121    if (ae < AUDIO_ENCODER_DEFAULT ||
122        ae >= AUDIO_ENCODER_LIST_END) {
123        LOGE("Invalid audio encoder: %d", ae);
124        return BAD_VALUE;
125    }
126
127    if (ae == AUDIO_ENCODER_DEFAULT) {
128        mAudioEncoder = AUDIO_ENCODER_AMR_NB;
129    } else {
130        mAudioEncoder = ae;
131    }
132
133    return OK;
134}
135
136status_t StagefrightRecorder::setVideoEncoder(video_encoder ve) {
137    LOGV("setVideoEncoder: %d", ve);
138    if (ve < VIDEO_ENCODER_DEFAULT ||
139        ve >= VIDEO_ENCODER_LIST_END) {
140        LOGE("Invalid video encoder: %d", ve);
141        return BAD_VALUE;
142    }
143
144    if (ve == VIDEO_ENCODER_DEFAULT) {
145        mVideoEncoder = VIDEO_ENCODER_H263;
146    } else {
147        mVideoEncoder = ve;
148    }
149
150    return OK;
151}
152
153status_t StagefrightRecorder::setVideoSize(int width, int height) {
154    LOGV("setVideoSize: %dx%d", width, height);
155    if (width <= 0 || height <= 0) {
156        LOGE("Invalid video size: %dx%d", width, height);
157        return BAD_VALUE;
158    }
159
160    // Additional check on the dimension will be performed later
161    mVideoWidth = width;
162    mVideoHeight = height;
163
164    return OK;
165}
166
167status_t StagefrightRecorder::setVideoFrameRate(int frames_per_second) {
168    LOGV("setVideoFrameRate: %d", frames_per_second);
169    if (frames_per_second <= 0 || frames_per_second > 30) {
170        LOGE("Invalid video frame rate: %d", frames_per_second);
171        return BAD_VALUE;
172    }
173
174    // Additional check on the frame rate will be performed later
175    mFrameRate = frames_per_second;
176
177    return OK;
178}
179
180status_t StagefrightRecorder::setCamera(const sp<ICamera> &camera) {
181    LOGV("setCamera");
182    if (camera == 0) {
183        LOGE("camera is NULL");
184        return BAD_VALUE;
185    }
186
187    int64_t token = IPCThreadState::self()->clearCallingIdentity();
188    mFlags &= ~FLAGS_HOT_CAMERA;
189    mCamera = Camera::create(camera);
190    if (mCamera == 0) {
191        LOGE("Unable to connect to camera");
192        IPCThreadState::self()->restoreCallingIdentity(token);
193        return -EBUSY;
194    }
195
196    LOGV("Connected to camera");
197    if (mCamera->previewEnabled()) {
198        LOGV("camera is hot");
199        mFlags |= FLAGS_HOT_CAMERA;
200    }
201    IPCThreadState::self()->restoreCallingIdentity(token);
202
203    return OK;
204}
205
206status_t StagefrightRecorder::setPreviewSurface(const sp<ISurface> &surface) {
207    LOGV("setPreviewSurface: %p", surface.get());
208    mPreviewSurface = surface;
209
210    return OK;
211}
212
213status_t StagefrightRecorder::setOutputFile(const char *path) {
214    LOGE("setOutputFile(const char*) must not be called");
215    // We don't actually support this at all, as the media_server process
216    // no longer has permissions to create files.
217
218    return -EPERM;
219}
220
221status_t StagefrightRecorder::setOutputFile(int fd, int64_t offset, int64_t length) {
222    LOGV("setOutputFile: %d, %lld, %lld", fd, offset, length);
223    // These don't make any sense, do they?
224    CHECK_EQ(offset, 0);
225    CHECK_EQ(length, 0);
226
227    if (fd < 0) {
228        LOGE("Invalid file descriptor: %d", fd);
229        return -EBADF;
230    }
231
232    if (mOutputFd >= 0) {
233        ::close(mOutputFd);
234    }
235    mOutputFd = dup(fd);
236
237    return OK;
238}
239
240// Attempt to parse an int64 literal optionally surrounded by whitespace,
241// returns true on success, false otherwise.
242static bool safe_strtoi64(const char *s, int64_t *val) {
243    char *end;
244    *val = strtoll(s, &end, 10);
245
246    if (end == s || errno == ERANGE) {
247        return false;
248    }
249
250    // Skip trailing whitespace
251    while (isspace(*end)) {
252        ++end;
253    }
254
255    // For a successful return, the string must contain nothing but a valid
256    // int64 literal optionally surrounded by whitespace.
257
258    return *end == '\0';
259}
260
261// Return true if the value is in [0, 0x007FFFFFFF]
262static bool safe_strtoi32(const char *s, int32_t *val) {
263    int64_t temp;
264    if (safe_strtoi64(s, &temp)) {
265        if (temp >= 0 && temp <= 0x007FFFFFFF) {
266            *val = static_cast<int32_t>(temp);
267            return true;
268        }
269    }
270    return false;
271}
272
273// Trim both leading and trailing whitespace from the given string.
274static void TrimString(String8 *s) {
275    size_t num_bytes = s->bytes();
276    const char *data = s->string();
277
278    size_t leading_space = 0;
279    while (leading_space < num_bytes && isspace(data[leading_space])) {
280        ++leading_space;
281    }
282
283    size_t i = num_bytes;
284    while (i > leading_space && isspace(data[i - 1])) {
285        --i;
286    }
287
288    s->setTo(String8(&data[leading_space], i - leading_space));
289}
290
291status_t StagefrightRecorder::setParamAudioSamplingRate(int32_t sampleRate) {
292    LOGV("setParamAudioSamplingRate: %d", sampleRate);
293    if (sampleRate <= 0) {
294        LOGE("Invalid audio sampling rate: %d", sampleRate);
295        return BAD_VALUE;
296    }
297
298    // Additional check on the sample rate will be performed later.
299    mSampleRate = sampleRate;
300    return OK;
301}
302
303status_t StagefrightRecorder::setParamAudioNumberOfChannels(int32_t channels) {
304    LOGV("setParamAudioNumberOfChannels: %d", channels);
305    if (channels <= 0 || channels >= 3) {
306        LOGE("Invalid number of audio channels: %d", channels);
307        return BAD_VALUE;
308    }
309
310    // Additional check on the number of channels will be performed later.
311    mAudioChannels = channels;
312    return OK;
313}
314
315status_t StagefrightRecorder::setParamAudioEncodingBitRate(int32_t bitRate) {
316    LOGV("setParamAudioEncodingBitRate: %d", bitRate);
317    if (bitRate <= 0) {
318        LOGE("Invalid audio encoding bit rate: %d", bitRate);
319        return BAD_VALUE;
320    }
321
322    // The target bit rate may not be exactly the same as the requested.
323    // It depends on many factors, such as rate control, and the bit rate
324    // range that a specific encoder supports. The mismatch between the
325    // the target and requested bit rate will NOT be treated as an error.
326    mAudioBitRate = bitRate;
327    return OK;
328}
329
330status_t StagefrightRecorder::setParamVideoEncodingBitRate(int32_t bitRate) {
331    LOGV("setParamVideoEncodingBitRate: %d", bitRate);
332    if (bitRate <= 0) {
333        LOGE("Invalid video encoding bit rate: %d", bitRate);
334        return BAD_VALUE;
335    }
336
337    // The target bit rate may not be exactly the same as the requested.
338    // It depends on many factors, such as rate control, and the bit rate
339    // range that a specific encoder supports. The mismatch between the
340    // the target and requested bit rate will NOT be treated as an error.
341    mVideoBitRate = bitRate;
342    return OK;
343}
344
345status_t StagefrightRecorder::setParamMaxFileDurationUs(int64_t timeUs) {
346    LOGV("setParamMaxFileDurationUs: %lld us", timeUs);
347    if (timeUs <= 1000000LL) {  // XXX: 1 second
348        LOGE("Max file duration is too short: %lld us", timeUs);
349        return BAD_VALUE;
350    }
351    mMaxFileDurationUs = timeUs;
352    return OK;
353}
354
355status_t StagefrightRecorder::setParamMaxFileSizeBytes(int64_t bytes) {
356    LOGV("setParamMaxFileSizeBytes: %lld bytes", bytes);
357    if (bytes <= 1024) {  // XXX: 1 kB
358        LOGE("Max file size is too small: %lld bytes", bytes);
359        return BAD_VALUE;
360    }
361    mMaxFileSizeBytes = bytes;
362    return OK;
363}
364
365status_t StagefrightRecorder::setParamInterleaveDuration(int32_t durationUs) {
366    LOGV("setParamInterleaveDuration: %d", durationUs);
367    if (durationUs <= 500000) {           //  500 ms
368        // If interleave duration is too small, it is very inefficient to do
369        // interleaving since the metadata overhead will count for a significant
370        // portion of the saved contents
371        LOGE("Audio/video interleave duration is too small: %d us", durationUs);
372        return BAD_VALUE;
373    } else if (durationUs >= 10000000) {  // 10 seconds
374        // If interleaving duration is too large, it can cause the recording
375        // session to use too much memory since we have to save the output
376        // data before we write them out
377        LOGE("Audio/video interleave duration is too large: %d us", durationUs);
378        return BAD_VALUE;
379    }
380    mInterleaveDurationUs = durationUs;
381    return OK;
382}
383
384// If interval <  0, only the first frame is I frame, and rest are all P frames
385// If interval == 0, all frames are encoded as I frames. No P frames
386// If interval >  0, it is the time spacing (seconds) between 2 neighboring I frames
387status_t StagefrightRecorder::setParamVideoIFramesInterval(int32_t interval) {
388    LOGV("setParamVideoIFramesInterval: %d seconds", interval);
389    mIFramesInterval = interval;
390    return OK;
391}
392
393status_t StagefrightRecorder::setParam64BitFileOffset(bool use64Bit) {
394    LOGV("setParam64BitFileOffset: %s",
395        use64Bit? "use 64 bit file offset": "use 32 bit file offset");
396    mUse64BitFileOffset = use64Bit;
397    return OK;
398}
399
400status_t StagefrightRecorder::setParamVideoCameraId(int32_t cameraId) {
401    LOGV("setParamVideoCameraId: %d", cameraId);
402    if (cameraId < 0) {
403        return BAD_VALUE;
404    }
405    mCameraId = cameraId;
406    return OK;
407}
408
409status_t StagefrightRecorder::setParamTrackFrameStatus(int32_t nFrames) {
410    LOGV("setParamTrackFrameStatus: %d", nFrames);
411    if (nFrames <= 0) {
412        LOGE("Invalid number of frames to track: %d", nFrames);
413        return BAD_VALUE;
414    }
415    mTrackEveryNumberOfFrames = nFrames;
416    return OK;
417}
418
419status_t StagefrightRecorder::setParamTrackTimeStatus(int64_t timeDurationUs) {
420    LOGV("setParamTrackTimeStatus: %lld", timeDurationUs);
421    if (timeDurationUs < 20000) {  // Infeasible if shorter than 20 ms?
422        LOGE("Tracking time duration too short: %lld us", timeDurationUs);
423        return BAD_VALUE;
424    }
425    mTrackEveryTimeDurationUs = timeDurationUs;
426    return OK;
427}
428
429status_t StagefrightRecorder::setParamVideoEncoderProfile(int32_t profile) {
430    LOGV("setParamVideoEncoderProfile: %d", profile);
431
432    // Additional check will be done later when we load the encoder.
433    // For now, we are accepting values defined in OpenMAX IL.
434    mVideoEncoderProfile = profile;
435    return OK;
436}
437
438status_t StagefrightRecorder::setParamVideoEncoderLevel(int32_t level) {
439    LOGV("setParamVideoEncoderLevel: %d", level);
440
441    // Additional check will be done later when we load the encoder.
442    // For now, we are accepting values defined in OpenMAX IL.
443    mVideoEncoderLevel = level;
444    return OK;
445}
446
447status_t StagefrightRecorder::setParameter(
448        const String8 &key, const String8 &value) {
449    LOGV("setParameter: key (%s) => value (%s)", key.string(), value.string());
450    if (key == "max-duration") {
451        int64_t max_duration_ms;
452        if (safe_strtoi64(value.string(), &max_duration_ms)) {
453            return setParamMaxFileDurationUs(1000LL * max_duration_ms);
454        }
455    } else if (key == "max-filesize") {
456        int64_t max_filesize_bytes;
457        if (safe_strtoi64(value.string(), &max_filesize_bytes)) {
458            return setParamMaxFileSizeBytes(max_filesize_bytes);
459        }
460    } else if (key == "interleave-duration-us") {
461        int32_t durationUs;
462        if (safe_strtoi32(value.string(), &durationUs)) {
463            return setParamInterleaveDuration(durationUs);
464        }
465    } else if (key == "param-use-64bit-offset") {
466        int32_t use64BitOffset;
467        if (safe_strtoi32(value.string(), &use64BitOffset)) {
468            return setParam64BitFileOffset(use64BitOffset != 0);
469        }
470    } else if (key == "param-track-frame-status") {
471        int32_t nFrames;
472        if (safe_strtoi32(value.string(), &nFrames)) {
473            return setParamTrackFrameStatus(nFrames);
474        }
475    } else if (key == "param-track-time-status") {
476        int64_t timeDurationUs;
477        if (safe_strtoi64(value.string(), &timeDurationUs)) {
478            return setParamTrackTimeStatus(timeDurationUs);
479        }
480    } else if (key == "audio-param-sampling-rate") {
481        int32_t sampling_rate;
482        if (safe_strtoi32(value.string(), &sampling_rate)) {
483            return setParamAudioSamplingRate(sampling_rate);
484        }
485    } else if (key == "audio-param-number-of-channels") {
486        int32_t number_of_channels;
487        if (safe_strtoi32(value.string(), &number_of_channels)) {
488            return setParamAudioNumberOfChannels(number_of_channels);
489        }
490    } else if (key == "audio-param-encoding-bitrate") {
491        int32_t audio_bitrate;
492        if (safe_strtoi32(value.string(), &audio_bitrate)) {
493            return setParamAudioEncodingBitRate(audio_bitrate);
494        }
495    } else if (key == "video-param-encoding-bitrate") {
496        int32_t video_bitrate;
497        if (safe_strtoi32(value.string(), &video_bitrate)) {
498            return setParamVideoEncodingBitRate(video_bitrate);
499        }
500    } else if (key == "video-param-i-frames-interval") {
501        int32_t interval;
502        if (safe_strtoi32(value.string(), &interval)) {
503            return setParamVideoIFramesInterval(interval);
504        }
505    } else if (key == "video-param-encoder-profile") {
506        int32_t profile;
507        if (safe_strtoi32(value.string(), &profile)) {
508            return setParamVideoEncoderProfile(profile);
509        }
510    } else if (key == "video-param-encoder-level") {
511        int32_t level;
512        if (safe_strtoi32(value.string(), &level)) {
513            return setParamVideoEncoderLevel(level);
514        }
515    } else if (key == "video-param-camera-id") {
516        int32_t cameraId;
517        if (safe_strtoi32(value.string(), &cameraId)) {
518            return setParamVideoCameraId(cameraId);
519        }
520    } else {
521        LOGE("setParameter: failed to find key %s", key.string());
522    }
523    return BAD_VALUE;
524}
525
526status_t StagefrightRecorder::setParameters(const String8 &params) {
527    LOGV("setParameters: %s", params.string());
528    const char *cparams = params.string();
529    const char *key_start = cparams;
530    for (;;) {
531        const char *equal_pos = strchr(key_start, '=');
532        if (equal_pos == NULL) {
533            LOGE("Parameters %s miss a value", cparams);
534            return BAD_VALUE;
535        }
536        String8 key(key_start, equal_pos - key_start);
537        TrimString(&key);
538        if (key.length() == 0) {
539            LOGE("Parameters %s contains an empty key", cparams);
540            return BAD_VALUE;
541        }
542        const char *value_start = equal_pos + 1;
543        const char *semicolon_pos = strchr(value_start, ';');
544        String8 value;
545        if (semicolon_pos == NULL) {
546            value.setTo(value_start);
547        } else {
548            value.setTo(value_start, semicolon_pos - value_start);
549        }
550        if (setParameter(key, value) != OK) {
551            return BAD_VALUE;
552        }
553        if (semicolon_pos == NULL) {
554            break;  // Reaches the end
555        }
556        key_start = semicolon_pos + 1;
557    }
558    return OK;
559}
560
561status_t StagefrightRecorder::setListener(const sp<IMediaRecorderClient> &listener) {
562    mListener = listener;
563
564    return OK;
565}
566
567status_t StagefrightRecorder::prepare() {
568    return OK;
569}
570
571status_t StagefrightRecorder::start() {
572    CHECK(mOutputFd >= 0);
573
574    if (mWriter != NULL) {
575        LOGE("File writer is not avaialble");
576        return UNKNOWN_ERROR;
577    }
578
579    switch (mOutputFormat) {
580        case OUTPUT_FORMAT_DEFAULT:
581        case OUTPUT_FORMAT_THREE_GPP:
582        case OUTPUT_FORMAT_MPEG_4:
583            return startMPEG4Recording();
584
585        case OUTPUT_FORMAT_AMR_NB:
586        case OUTPUT_FORMAT_AMR_WB:
587            return startAMRRecording();
588
589        case OUTPUT_FORMAT_AAC_ADIF:
590        case OUTPUT_FORMAT_AAC_ADTS:
591            return startAACRecording();
592
593        default:
594            LOGE("Unsupported output file format: %d", mOutputFormat);
595            return UNKNOWN_ERROR;
596    }
597}
598
599sp<MediaSource> StagefrightRecorder::createAudioSource() {
600    sp<AudioSource> audioSource =
601        new AudioSource(
602                mAudioSource,
603                mSampleRate,
604                mAudioChannels);
605
606    status_t err = audioSource->initCheck();
607
608    if (err != OK) {
609        LOGE("audio source is not initialized");
610        return NULL;
611    }
612
613    sp<MetaData> encMeta = new MetaData;
614    const char *mime;
615    switch (mAudioEncoder) {
616        case AUDIO_ENCODER_AMR_NB:
617        case AUDIO_ENCODER_DEFAULT:
618            mime = MEDIA_MIMETYPE_AUDIO_AMR_NB;
619            break;
620        case AUDIO_ENCODER_AMR_WB:
621            mime = MEDIA_MIMETYPE_AUDIO_AMR_WB;
622            break;
623        case AUDIO_ENCODER_AAC:
624            mime = MEDIA_MIMETYPE_AUDIO_AAC;
625            break;
626        default:
627            LOGE("Unknown audio encoder: %d", mAudioEncoder);
628            return NULL;
629    }
630    encMeta->setCString(kKeyMIMEType, mime);
631
632    int32_t maxInputSize;
633    CHECK(audioSource->getFormat()->findInt32(
634                kKeyMaxInputSize, &maxInputSize));
635
636    encMeta->setInt32(kKeyMaxInputSize, maxInputSize);
637    encMeta->setInt32(kKeyChannelCount, mAudioChannels);
638    encMeta->setInt32(kKeySampleRate, mSampleRate);
639    encMeta->setInt32(kKeyBitRate, mAudioBitRate);
640
641    OMXClient client;
642    CHECK_EQ(client.connect(), OK);
643
644    sp<MediaSource> audioEncoder =
645        OMXCodec::Create(client.interface(), encMeta,
646                         true /* createEncoder */, audioSource);
647    mAudioSourceNode = audioSource;
648
649    return audioEncoder;
650}
651
652status_t StagefrightRecorder::startAACRecording() {
653    CHECK(mOutputFormat == OUTPUT_FORMAT_AAC_ADIF ||
654          mOutputFormat == OUTPUT_FORMAT_AAC_ADTS);
655
656    CHECK(mAudioEncoder == AUDIO_ENCODER_AAC);
657    CHECK(mAudioSource != AUDIO_SOURCE_LIST_END);
658
659    CHECK(0 == "AACWriter is not implemented yet");
660
661    return OK;
662}
663
664status_t StagefrightRecorder::startAMRRecording() {
665    CHECK(mOutputFormat == OUTPUT_FORMAT_AMR_NB ||
666          mOutputFormat == OUTPUT_FORMAT_AMR_WB);
667
668    if (mOutputFormat == OUTPUT_FORMAT_AMR_NB) {
669        if (mAudioEncoder != AUDIO_ENCODER_DEFAULT &&
670            mAudioEncoder != AUDIO_ENCODER_AMR_NB) {
671            LOGE("Invalid encoder %d used for AMRNB recording",
672                    mAudioEncoder);
673            return BAD_VALUE;
674        }
675        if (mSampleRate != 8000) {
676            LOGE("Invalid sampling rate %d used for AMRNB recording",
677                    mSampleRate);
678            return BAD_VALUE;
679        }
680    } else {  // mOutputFormat must be OUTPUT_FORMAT_AMR_WB
681        if (mAudioEncoder != AUDIO_ENCODER_AMR_WB) {
682            LOGE("Invlaid encoder %d used for AMRWB recording",
683                    mAudioEncoder);
684            return BAD_VALUE;
685        }
686        if (mSampleRate != 16000) {
687            LOGE("Invalid sample rate %d used for AMRWB recording",
688                    mSampleRate);
689            return BAD_VALUE;
690        }
691    }
692    if (mAudioChannels != 1) {
693        LOGE("Invalid number of audio channels %d used for amr recording",
694                mAudioChannels);
695        return BAD_VALUE;
696    }
697
698    if (mAudioSource >= AUDIO_SOURCE_LIST_END) {
699        LOGE("Invalid audio source: %d", mAudioSource);
700        return BAD_VALUE;
701    }
702
703    sp<MediaSource> audioEncoder = createAudioSource();
704
705    if (audioEncoder == NULL) {
706        return UNKNOWN_ERROR;
707    }
708
709    mWriter = new AMRWriter(dup(mOutputFd));
710    mWriter->addSource(audioEncoder);
711
712    if (mMaxFileDurationUs != 0) {
713        mWriter->setMaxFileDuration(mMaxFileDurationUs);
714    }
715    if (mMaxFileSizeBytes != 0) {
716        mWriter->setMaxFileSize(mMaxFileSizeBytes);
717    }
718    mWriter->setListener(mListener);
719    mWriter->start();
720
721    return OK;
722}
723
724void StagefrightRecorder::clipVideoFrameRate() {
725    LOGV("clipVideoFrameRate: encoder %d", mVideoEncoder);
726    int minFrameRate = mEncoderProfiles->getVideoEncoderParamByName(
727                        "enc.vid.fps.min", mVideoEncoder);
728    int maxFrameRate = mEncoderProfiles->getVideoEncoderParamByName(
729                        "enc.vid.fps.max", mVideoEncoder);
730    if (mFrameRate < minFrameRate) {
731        LOGW("Intended video encoding frame rate (%d fps) is too small"
732             " and will be set to (%d fps)", mFrameRate, minFrameRate);
733        mFrameRate = minFrameRate;
734    } else if (mFrameRate > maxFrameRate) {
735        LOGW("Intended video encoding frame rate (%d fps) is too large"
736             " and will be set to (%d fps)", mFrameRate, maxFrameRate);
737        mFrameRate = maxFrameRate;
738    }
739}
740
741void StagefrightRecorder::clipVideoBitRate() {
742    LOGV("clipVideoBitRate: encoder %d", mVideoEncoder);
743    int minBitRate = mEncoderProfiles->getVideoEncoderParamByName(
744                        "enc.vid.bps.min", mVideoEncoder);
745    int maxBitRate = mEncoderProfiles->getVideoEncoderParamByName(
746                        "enc.vid.bps.max", mVideoEncoder);
747    if (mVideoBitRate < minBitRate) {
748        LOGW("Intended video encoding bit rate (%d bps) is too small"
749             " and will be set to (%d bps)", mVideoBitRate, minBitRate);
750        mVideoBitRate = minBitRate;
751    } else if (mVideoBitRate > maxBitRate) {
752        LOGW("Intended video encoding bit rate (%d bps) is too large"
753             " and will be set to (%d bps)", mVideoBitRate, maxBitRate);
754        mVideoBitRate = maxBitRate;
755    }
756}
757
758void StagefrightRecorder::clipVideoFrameWidth() {
759    LOGV("clipVideoFrameWidth: encoder %d", mVideoEncoder);
760    int minFrameWidth = mEncoderProfiles->getVideoEncoderParamByName(
761                        "enc.vid.width.min", mVideoEncoder);
762    int maxFrameWidth = mEncoderProfiles->getVideoEncoderParamByName(
763                        "enc.vid.width.max", mVideoEncoder);
764    if (mVideoWidth < minFrameWidth) {
765        LOGW("Intended video encoding frame width (%d) is too small"
766             " and will be set to (%d)", mVideoWidth, minFrameWidth);
767        mVideoWidth = minFrameWidth;
768    } else if (mVideoWidth > maxFrameWidth) {
769        LOGW("Intended video encoding frame width (%d) is too large"
770             " and will be set to (%d)", mVideoWidth, maxFrameWidth);
771        mVideoWidth = maxFrameWidth;
772    }
773}
774
775status_t StagefrightRecorder::setupCameraSource() {
776    clipVideoBitRate();
777    clipVideoFrameRate();
778    clipVideoFrameWidth();
779    clipVideoFrameHeight();
780
781    int64_t token = IPCThreadState::self()->clearCallingIdentity();
782    if (mCamera == 0) {
783        mCamera = Camera::connect(mCameraId);
784        if (mCamera == 0) {
785            LOGE("Camera connection could not be established.");
786            return -EBUSY;
787        }
788        mFlags &= ~FLAGS_HOT_CAMERA;
789        mCamera->lock();
790    }
791
792    // Set the actual video recording frame size
793    CameraParameters params(mCamera->getParameters());
794    params.setPreviewSize(mVideoWidth, mVideoHeight);
795    params.setPreviewFrameRate(mFrameRate);
796    String8 s = params.flatten();
797    CHECK_EQ(OK, mCamera->setParameters(s));
798    CameraParameters newCameraParams(mCamera->getParameters());
799
800    // Check on video frame size
801    int frameWidth = 0, frameHeight = 0;
802    newCameraParams.getPreviewSize(&frameWidth, &frameHeight);
803    if (frameWidth  < 0 || frameWidth  != mVideoWidth ||
804        frameHeight < 0 || frameHeight != mVideoHeight) {
805        LOGE("Failed to set the video frame size to %dx%d",
806                mVideoWidth, mVideoHeight);
807        IPCThreadState::self()->restoreCallingIdentity(token);
808        return UNKNOWN_ERROR;
809    }
810
811    // Check on video frame rate
812    int frameRate = newCameraParams.getPreviewFrameRate();
813    if (frameRate < 0 || (frameRate - mFrameRate) != 0) {
814        LOGE("Failed to set frame rate to %d fps. The actual "
815             "frame rate is %d", mFrameRate, frameRate);
816    }
817
818    CHECK_EQ(OK, mCamera->setPreviewDisplay(mPreviewSurface));
819    IPCThreadState::self()->restoreCallingIdentity(token);
820    return OK;
821}
822
823void StagefrightRecorder::clipVideoFrameHeight() {
824    LOGV("clipVideoFrameHeight: encoder %d", mVideoEncoder);
825    int minFrameHeight = mEncoderProfiles->getVideoEncoderParamByName(
826                        "enc.vid.height.min", mVideoEncoder);
827    int maxFrameHeight = mEncoderProfiles->getVideoEncoderParamByName(
828                        "enc.vid.height.max", mVideoEncoder);
829    if (mVideoHeight < minFrameHeight) {
830        LOGW("Intended video encoding frame height (%d) is too small"
831             " and will be set to (%d)", mVideoHeight, minFrameHeight);
832        mVideoHeight = minFrameHeight;
833    } else if (mVideoHeight > maxFrameHeight) {
834        LOGW("Intended video encoding frame height (%d) is too large"
835             " and will be set to (%d)", mVideoHeight, maxFrameHeight);
836        mVideoHeight = maxFrameHeight;
837    }
838}
839
840status_t StagefrightRecorder::setupVideoEncoder(const sp<MediaWriter>& writer) {
841    status_t err = setupCameraSource();
842    if (err != OK) return err;
843
844    sp<CameraSource> cameraSource = CameraSource::CreateFromCamera(mCamera);
845    CHECK(cameraSource != NULL);
846
847    sp<MetaData> enc_meta = new MetaData;
848    enc_meta->setInt32(kKeyBitRate, mVideoBitRate);
849    enc_meta->setInt32(kKeySampleRate, mFrameRate);
850
851    switch (mVideoEncoder) {
852        case VIDEO_ENCODER_H263:
853            enc_meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_VIDEO_H263);
854            break;
855
856        case VIDEO_ENCODER_MPEG_4_SP:
857            enc_meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_VIDEO_MPEG4);
858            break;
859
860        case VIDEO_ENCODER_H264:
861            enc_meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_VIDEO_AVC);
862            break;
863
864        default:
865            CHECK(!"Should not be here, unsupported video encoding.");
866            break;
867    }
868
869    sp<MetaData> meta = cameraSource->getFormat();
870
871    int32_t width, height, stride, sliceHeight;
872    CHECK(meta->findInt32(kKeyWidth, &width));
873    CHECK(meta->findInt32(kKeyHeight, &height));
874    CHECK(meta->findInt32(kKeyStride, &stride));
875    CHECK(meta->findInt32(kKeySliceHeight, &sliceHeight));
876
877    enc_meta->setInt32(kKeyWidth, width);
878    enc_meta->setInt32(kKeyHeight, height);
879    enc_meta->setInt32(kKeyIFramesInterval, mIFramesInterval);
880    enc_meta->setInt32(kKeyStride, stride);
881    enc_meta->setInt32(kKeySliceHeight, sliceHeight);
882    if (mVideoEncoderProfile != -1) {
883        enc_meta->setInt32(kKeyVideoProfile, mVideoEncoderProfile);
884    }
885    if (mVideoEncoderLevel != -1) {
886        enc_meta->setInt32(kKeyVideoLevel, mVideoEncoderLevel);
887    }
888
889    OMXClient client;
890    CHECK_EQ(client.connect(), OK);
891
892    sp<MediaSource> encoder = OMXCodec::Create(
893            client.interface(), enc_meta,
894            true /* createEncoder */, cameraSource);
895    if (encoder == NULL) {
896        return UNKNOWN_ERROR;
897    }
898
899    writer->addSource(encoder);
900    return OK;
901}
902
903status_t StagefrightRecorder::setupAudioEncoder(const sp<MediaWriter>& writer) {
904    sp<MediaSource> audioEncoder;
905    switch(mAudioEncoder) {
906        case AUDIO_ENCODER_AMR_NB:
907        case AUDIO_ENCODER_AMR_WB:
908        case AUDIO_ENCODER_AAC:
909            audioEncoder = createAudioSource();
910            break;
911        default:
912            LOGE("Unsupported audio encoder: %d", mAudioEncoder);
913            return UNKNOWN_ERROR;
914    }
915
916    if (audioEncoder == NULL) {
917        return UNKNOWN_ERROR;
918    }
919    writer->addSource(audioEncoder);
920    return OK;
921}
922
923status_t StagefrightRecorder::startMPEG4Recording() {
924    int32_t totalBitRate = 0;
925    status_t err = OK;
926    sp<MediaWriter> writer = new MPEG4Writer(dup(mOutputFd));
927
928    // Add audio source first if it exists
929    if (mAudioSource != AUDIO_SOURCE_LIST_END) {
930        err = setupAudioEncoder(writer);
931        if (err != OK) return err;
932        totalBitRate += mAudioBitRate;
933    }
934    if (mVideoSource == VIDEO_SOURCE_DEFAULT
935            || mVideoSource == VIDEO_SOURCE_CAMERA) {
936        err = setupVideoEncoder(writer);
937        if (err != OK) return err;
938        totalBitRate += mVideoBitRate;
939    }
940
941    reinterpret_cast<MPEG4Writer *>(writer.get())->
942        setInterleaveDuration(mInterleaveDurationUs);
943
944    if (mMaxFileDurationUs != 0) {
945        writer->setMaxFileDuration(mMaxFileDurationUs);
946    }
947    if (mMaxFileSizeBytes != 0) {
948        writer->setMaxFileSize(mMaxFileSizeBytes);
949    }
950    sp<MetaData> meta = new MetaData;
951    meta->setInt64(kKeyTime, systemTime() / 1000);
952    meta->setInt32(kKeyFileType, mOutputFormat);
953    meta->setInt32(kKeyBitRate, totalBitRate);
954    meta->setInt32(kKey64BitFileOffset, mUse64BitFileOffset);
955    if (mTrackEveryNumberOfFrames > 0) {
956        meta->setInt32(kKeyTrackFrameStatus, mTrackEveryNumberOfFrames);
957    }
958    if (mTrackEveryTimeDurationUs > 0) {
959        meta->setInt64(kKeyTrackTimeStatus, mTrackEveryTimeDurationUs);
960    }
961    writer->setListener(mListener);
962    mWriter = writer;
963    return mWriter->start(meta.get());
964}
965
966status_t StagefrightRecorder::pause() {
967    LOGV("pause");
968    if (mWriter == NULL) {
969        return UNKNOWN_ERROR;
970    }
971    mWriter->pause();
972    return OK;
973}
974
975status_t StagefrightRecorder::stop() {
976    LOGV("stop");
977    if (mWriter != NULL) {
978        mWriter->stop();
979        mWriter.clear();
980    }
981
982    if (mCamera != 0) {
983        LOGV("Disconnect camera");
984        int64_t token = IPCThreadState::self()->clearCallingIdentity();
985        if ((mFlags & FLAGS_HOT_CAMERA) == 0) {
986            LOGV("Camera was cold when we started, stopping preview");
987            mCamera->stopPreview();
988        }
989        mCamera->unlock();
990        mCamera.clear();
991        IPCThreadState::self()->restoreCallingIdentity(token);
992        mFlags = 0;
993    }
994
995    return OK;
996}
997
998status_t StagefrightRecorder::close() {
999    LOGV("close");
1000    stop();
1001
1002    return OK;
1003}
1004
1005status_t StagefrightRecorder::reset() {
1006    LOGV("reset");
1007    stop();
1008
1009    // No audio or video source by default
1010    mAudioSource = AUDIO_SOURCE_LIST_END;
1011    mVideoSource = VIDEO_SOURCE_LIST_END;
1012
1013    // Default parameters
1014    mOutputFormat  = OUTPUT_FORMAT_THREE_GPP;
1015    mAudioEncoder  = AUDIO_ENCODER_AMR_NB;
1016    mVideoEncoder  = VIDEO_ENCODER_H263;
1017    mVideoWidth    = 176;
1018    mVideoHeight   = 144;
1019    mFrameRate     = 20;
1020    mVideoBitRate  = 192000;
1021    mSampleRate    = 8000;
1022    mAudioChannels = 1;
1023    mAudioBitRate  = 12200;
1024    mInterleaveDurationUs = 0;
1025    mIFramesInterval = 1;
1026    mAudioSourceNode = 0;
1027    mUse64BitFileOffset = false;
1028    mCameraId        = 0;
1029    mVideoEncoderProfile = -1;
1030    mVideoEncoderLevel   = -1;
1031    mMaxFileDurationUs = 0;
1032    mMaxFileSizeBytes = 0;
1033    mTrackEveryNumberOfFrames = 0;
1034    mTrackEveryTimeDurationUs = 0;
1035    mEncoderProfiles = MediaProfiles::getInstance();
1036
1037    mOutputFd = -1;
1038    mFlags = 0;
1039
1040    return OK;
1041}
1042
1043status_t StagefrightRecorder::getMaxAmplitude(int *max) {
1044    LOGV("getMaxAmplitude");
1045
1046    if (max == NULL) {
1047        LOGE("Null pointer argument");
1048        return BAD_VALUE;
1049    }
1050
1051    if (mAudioSourceNode != 0) {
1052        *max = mAudioSourceNode->getMaxAmplitude();
1053    } else {
1054        *max = 0;
1055    }
1056
1057    return OK;
1058}
1059
1060}  // namespace android
1061