StagefrightRecorder.cpp revision 7a42770f47225483a885b168d05e81b6a81189c0 
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/CameraSourceTimeLapse.h>
28#include <media/stagefright/MPEG4Writer.h>
29#include <media/stagefright/MediaDebug.h>
30#include <media/stagefright/MediaDefs.h>
31#include <media/stagefright/MetaData.h>
32#include <media/stagefright/OMXClient.h>
33#include <media/stagefright/OMXCodec.h>
34#include <media/MediaProfiles.h>
35#include <camera/ICamera.h>
36#include <camera/Camera.h>
37#include <camera/CameraParameters.h>
38#include <surfaceflinger/ISurface.h>
39#include <utils/Errors.h>
40#include <sys/types.h>
41#include <unistd.h>
42#include <ctype.h>
43
44namespace android {
45
46StagefrightRecorder::StagefrightRecorder()
47    : mWriter(NULL),
48      mOutputFd(-1) {
49
50    LOGV("Constructor");
51    reset();
52}
53
54StagefrightRecorder::~StagefrightRecorder() {
55    LOGV("Destructor");
56    stop();
57
58    if (mOutputFd >= 0) {
59        ::close(mOutputFd);
60        mOutputFd = -1;
61    }
62}
63
64status_t StagefrightRecorder::init() {
65    LOGV("init");
66    return OK;
67}
68
69status_t StagefrightRecorder::setAudioSource(audio_source as) {
70    LOGV("setAudioSource: %d", as);
71    if (as < AUDIO_SOURCE_DEFAULT ||
72        as >= AUDIO_SOURCE_LIST_END) {
73        LOGE("Invalid audio source: %d", as);
74        return BAD_VALUE;
75    }
76
77    if (as == AUDIO_SOURCE_DEFAULT) {
78        mAudioSource = AUDIO_SOURCE_MIC;
79    } else {
80        mAudioSource = as;
81    }
82
83    return OK;
84}
85
86status_t StagefrightRecorder::setVideoSource(video_source vs) {
87    LOGV("setVideoSource: %d", vs);
88    if (vs < VIDEO_SOURCE_DEFAULT ||
89        vs >= VIDEO_SOURCE_LIST_END) {
90        LOGE("Invalid video source: %d", vs);
91        return BAD_VALUE;
92    }
93
94    if (vs == VIDEO_SOURCE_DEFAULT) {
95        mVideoSource = VIDEO_SOURCE_CAMERA;
96    } else {
97        mVideoSource = vs;
98    }
99
100    return OK;
101}
102
103status_t StagefrightRecorder::setOutputFormat(output_format of) {
104    LOGV("setOutputFormat: %d", of);
105    if (of < OUTPUT_FORMAT_DEFAULT ||
106        of >= OUTPUT_FORMAT_LIST_END) {
107        LOGE("Invalid output format: %d", of);
108        return BAD_VALUE;
109    }
110
111    if (of == OUTPUT_FORMAT_DEFAULT) {
112        mOutputFormat = OUTPUT_FORMAT_THREE_GPP;
113    } else {
114        mOutputFormat = of;
115    }
116
117    return OK;
118}
119
120status_t StagefrightRecorder::setAudioEncoder(audio_encoder ae) {
121    LOGV("setAudioEncoder: %d", ae);
122    if (ae < AUDIO_ENCODER_DEFAULT ||
123        ae >= AUDIO_ENCODER_LIST_END) {
124        LOGE("Invalid audio encoder: %d", ae);
125        return BAD_VALUE;
126    }
127
128    if (ae == AUDIO_ENCODER_DEFAULT) {
129        mAudioEncoder = AUDIO_ENCODER_AMR_NB;
130    } else {
131        mAudioEncoder = ae;
132    }
133
134    return OK;
135}
136
137status_t StagefrightRecorder::setVideoEncoder(video_encoder ve) {
138    LOGV("setVideoEncoder: %d", ve);
139    if (ve < VIDEO_ENCODER_DEFAULT ||
140        ve >= VIDEO_ENCODER_LIST_END) {
141        LOGE("Invalid video encoder: %d", ve);
142        return BAD_VALUE;
143    }
144
145    if (ve == VIDEO_ENCODER_DEFAULT) {
146        mVideoEncoder = VIDEO_ENCODER_H263;
147    } else {
148        mVideoEncoder = ve;
149    }
150
151    return OK;
152}
153
154status_t StagefrightRecorder::setVideoSize(int width, int height) {
155    LOGV("setVideoSize: %dx%d", width, height);
156    if (width <= 0 || height <= 0) {
157        LOGE("Invalid video size: %dx%d", width, height);
158        return BAD_VALUE;
159    }
160
161    // Additional check on the dimension will be performed later
162    mVideoWidth = width;
163    mVideoHeight = height;
164
165    return OK;
166}
167
168status_t StagefrightRecorder::setVideoFrameRate(int frames_per_second) {
169    LOGV("setVideoFrameRate: %d", frames_per_second);
170    if (frames_per_second <= 0 || frames_per_second > 30) {
171        LOGE("Invalid video frame rate: %d", frames_per_second);
172        return BAD_VALUE;
173    }
174
175    // Additional check on the frame rate will be performed later
176    mFrameRate = frames_per_second;
177
178    return OK;
179}
180
181status_t StagefrightRecorder::setCamera(const sp<ICamera> &camera) {
182    LOGV("setCamera");
183    if (camera == 0) {
184        LOGE("camera is NULL");
185        return BAD_VALUE;
186    }
187
188    int64_t token = IPCThreadState::self()->clearCallingIdentity();
189    mFlags &= ~FLAGS_HOT_CAMERA;
190    mCamera = Camera::create(camera);
191    if (mCamera == 0) {
192        LOGE("Unable to connect to camera");
193        IPCThreadState::self()->restoreCallingIdentity(token);
194        return -EBUSY;
195    }
196
197    LOGV("Connected to camera");
198    if (mCamera->previewEnabled()) {
199        LOGV("camera is hot");
200        mFlags |= FLAGS_HOT_CAMERA;
201    }
202    IPCThreadState::self()->restoreCallingIdentity(token);
203
204    return OK;
205}
206
207status_t StagefrightRecorder::setPreviewSurface(const sp<ISurface> &surface) {
208    LOGV("setPreviewSurface: %p", surface.get());
209    mPreviewSurface = surface;
210
211    return OK;
212}
213
214status_t StagefrightRecorder::setOutputFile(const char *path) {
215    LOGE("setOutputFile(const char*) must not be called");
216    // We don't actually support this at all, as the media_server process
217    // no longer has permissions to create files.
218
219    return -EPERM;
220}
221
222status_t StagefrightRecorder::setOutputFile(int fd, int64_t offset, int64_t length) {
223    LOGV("setOutputFile: %d, %lld, %lld", fd, offset, length);
224    // These don't make any sense, do they?
225    CHECK_EQ(offset, 0);
226    CHECK_EQ(length, 0);
227
228    if (fd < 0) {
229        LOGE("Invalid file descriptor: %d", fd);
230        return -EBADF;
231    }
232
233    if (mOutputFd >= 0) {
234        ::close(mOutputFd);
235    }
236    mOutputFd = dup(fd);
237
238    return OK;
239}
240
241// Attempt to parse an int64 literal optionally surrounded by whitespace,
242// returns true on success, false otherwise.
243static bool safe_strtoi64(const char *s, int64_t *val) {
244    char *end;
245    *val = strtoll(s, &end, 10);
246
247    if (end == s || errno == ERANGE) {
248        return false;
249    }
250
251    // Skip trailing whitespace
252    while (isspace(*end)) {
253        ++end;
254    }
255
256    // For a successful return, the string must contain nothing but a valid
257    // int64 literal optionally surrounded by whitespace.
258
259    return *end == '\0';
260}
261
262// Return true if the value is in [0, 0x007FFFFFFF]
263static bool safe_strtoi32(const char *s, int32_t *val) {
264    int64_t temp;
265    if (safe_strtoi64(s, &temp)) {
266        if (temp >= 0 && temp <= 0x007FFFFFFF) {
267            *val = static_cast<int32_t>(temp);
268            return true;
269        }
270    }
271    return false;
272}
273
274// Trim both leading and trailing whitespace from the given string.
275static void TrimString(String8 *s) {
276    size_t num_bytes = s->bytes();
277    const char *data = s->string();
278
279    size_t leading_space = 0;
280    while (leading_space < num_bytes && isspace(data[leading_space])) {
281        ++leading_space;
282    }
283
284    size_t i = num_bytes;
285    while (i > leading_space && isspace(data[i - 1])) {
286        --i;
287    }
288
289    s->setTo(String8(&data[leading_space], i - leading_space));
290}
291
292status_t StagefrightRecorder::setParamAudioSamplingRate(int32_t sampleRate) {
293    LOGV("setParamAudioSamplingRate: %d", sampleRate);
294    if (sampleRate <= 0) {
295        LOGE("Invalid audio sampling rate: %d", sampleRate);
296        return BAD_VALUE;
297    }
298
299    // Additional check on the sample rate will be performed later.
300    mSampleRate = sampleRate;
301    return OK;
302}
303
304status_t StagefrightRecorder::setParamAudioNumberOfChannels(int32_t channels) {
305    LOGV("setParamAudioNumberOfChannels: %d", channels);
306    if (channels <= 0 || channels >= 3) {
307        LOGE("Invalid number of audio channels: %d", channels);
308        return BAD_VALUE;
309    }
310
311    // Additional check on the number of channels will be performed later.
312    mAudioChannels = channels;
313    return OK;
314}
315
316status_t StagefrightRecorder::setParamAudioEncodingBitRate(int32_t bitRate) {
317    LOGV("setParamAudioEncodingBitRate: %d", bitRate);
318    if (bitRate <= 0) {
319        LOGE("Invalid audio encoding bit rate: %d", bitRate);
320        return BAD_VALUE;
321    }
322
323    // The target bit rate may not be exactly the same as the requested.
324    // It depends on many factors, such as rate control, and the bit rate
325    // range that a specific encoder supports. The mismatch between the
326    // the target and requested bit rate will NOT be treated as an error.
327    mAudioBitRate = bitRate;
328    return OK;
329}
330
331status_t StagefrightRecorder::setParamVideoEncodingBitRate(int32_t bitRate) {
332    LOGV("setParamVideoEncodingBitRate: %d", bitRate);
333    if (bitRate <= 0) {
334        LOGE("Invalid video encoding bit rate: %d", bitRate);
335        return BAD_VALUE;
336    }
337
338    // The target bit rate may not be exactly the same as the requested.
339    // It depends on many factors, such as rate control, and the bit rate
340    // range that a specific encoder supports. The mismatch between the
341    // the target and requested bit rate will NOT be treated as an error.
342    mVideoBitRate = bitRate;
343    return OK;
344}
345
346status_t StagefrightRecorder::setParamMaxFileDurationUs(int64_t timeUs) {
347    LOGV("setParamMaxFileDurationUs: %lld us", timeUs);
348    if (timeUs <= 1000000LL) {  // XXX: 1 second
349        LOGE("Max file duration is too short: %lld us", timeUs);
350        return BAD_VALUE;
351    }
352    mMaxFileDurationUs = timeUs;
353    return OK;
354}
355
356status_t StagefrightRecorder::setParamMaxFileSizeBytes(int64_t bytes) {
357    LOGV("setParamMaxFileSizeBytes: %lld bytes", bytes);
358    if (bytes <= 1024) {  // XXX: 1 kB
359        LOGE("Max file size is too small: %lld bytes", bytes);
360        return BAD_VALUE;
361    }
362    mMaxFileSizeBytes = bytes;
363    return OK;
364}
365
366status_t StagefrightRecorder::setParamInterleaveDuration(int32_t durationUs) {
367    LOGV("setParamInterleaveDuration: %d", durationUs);
368    if (durationUs <= 500000) {           //  500 ms
369        // If interleave duration is too small, it is very inefficient to do
370        // interleaving since the metadata overhead will count for a significant
371        // portion of the saved contents
372        LOGE("Audio/video interleave duration is too small: %d us", durationUs);
373        return BAD_VALUE;
374    } else if (durationUs >= 10000000) {  // 10 seconds
375        // If interleaving duration is too large, it can cause the recording
376        // session to use too much memory since we have to save the output
377        // data before we write them out
378        LOGE("Audio/video interleave duration is too large: %d us", durationUs);
379        return BAD_VALUE;
380    }
381    mInterleaveDurationUs = durationUs;
382    return OK;
383}
384
385// If seconds <  0, only the first frame is I frame, and rest are all P frames
386// If seconds == 0, all frames are encoded as I frames. No P frames
387// If seconds >  0, it is the time spacing (seconds) between 2 neighboring I frames
388status_t StagefrightRecorder::setParamVideoIFramesInterval(int32_t seconds) {
389    LOGV("setParamVideoIFramesInterval: %d seconds", seconds);
390    mIFramesIntervalSec = seconds;
391    return OK;
392}
393
394status_t StagefrightRecorder::setParam64BitFileOffset(bool use64Bit) {
395    LOGV("setParam64BitFileOffset: %s",
396        use64Bit? "use 64 bit file offset": "use 32 bit file offset");
397    mUse64BitFileOffset = use64Bit;
398    return OK;
399}
400
401status_t StagefrightRecorder::setParamVideoCameraId(int32_t cameraId) {
402    LOGV("setParamVideoCameraId: %d", cameraId);
403    if (cameraId < 0) {
404        return BAD_VALUE;
405    }
406    mCameraId = cameraId;
407    return OK;
408}
409
410status_t StagefrightRecorder::setParamTrackFrameStatus(int32_t nFrames) {
411    LOGV("setParamTrackFrameStatus: %d", nFrames);
412    if (nFrames <= 0) {
413        LOGE("Invalid number of frames to track: %d", nFrames);
414        return BAD_VALUE;
415    }
416    mTrackEveryNumberOfFrames = nFrames;
417    return OK;
418}
419
420status_t StagefrightRecorder::setParamTrackTimeStatus(int64_t timeDurationUs) {
421    LOGV("setParamTrackTimeStatus: %lld", timeDurationUs);
422    if (timeDurationUs < 20000) {  // Infeasible if shorter than 20 ms?
423        LOGE("Tracking time duration too short: %lld us", timeDurationUs);
424        return BAD_VALUE;
425    }
426    mTrackEveryTimeDurationUs = timeDurationUs;
427    return OK;
428}
429
430status_t StagefrightRecorder::setParamVideoEncoderProfile(int32_t profile) {
431    LOGV("setParamVideoEncoderProfile: %d", profile);
432
433    // Additional check will be done later when we load the encoder.
434    // For now, we are accepting values defined in OpenMAX IL.
435    mVideoEncoderProfile = profile;
436    return OK;
437}
438
439status_t StagefrightRecorder::setParamVideoEncoderLevel(int32_t level) {
440    LOGV("setParamVideoEncoderLevel: %d", level);
441
442    // Additional check will be done later when we load the encoder.
443    // For now, we are accepting values defined in OpenMAX IL.
444    mVideoEncoderLevel = level;
445    return OK;
446}
447
448status_t StagefrightRecorder::setParamMovieTimeScale(int32_t timeScale) {
449    LOGV("setParamMovieTimeScale: %d", timeScale);
450
451    // The range is set to be the same as the audio's time scale range
452    // since audio's time scale has a wider range.
453    if (timeScale < 600 || timeScale > 96000) {
454        LOGE("Time scale (%d) for movie is out of range [600, 96000]", timeScale);
455        return BAD_VALUE;
456    }
457    mMovieTimeScale = timeScale;
458    return OK;
459}
460
461status_t StagefrightRecorder::setParamVideoTimeScale(int32_t timeScale) {
462    LOGV("setParamVideoTimeScale: %d", timeScale);
463
464    // 60000 is chosen to make sure that each video frame from a 60-fps
465    // video has 1000 ticks.
466    if (timeScale < 600 || timeScale > 60000) {
467        LOGE("Time scale (%d) for video is out of range [600, 60000]", timeScale);
468        return BAD_VALUE;
469    }
470    mVideoTimeScale = timeScale;
471    return OK;
472}
473
474status_t StagefrightRecorder::setParamAudioTimeScale(int32_t timeScale) {
475    LOGV("setParamAudioTimeScale: %d", timeScale);
476
477    // 96000 Hz is the highest sampling rate support in AAC.
478    if (timeScale < 600 || timeScale > 96000) {
479        LOGE("Time scale (%d) for audio is out of range [600, 96000]", timeScale);
480        return BAD_VALUE;
481    }
482    mAudioTimeScale = timeScale;
483    return OK;
484}
485
486status_t StagefrightRecorder::setParameter(
487        const String8 &key, const String8 &value) {
488    LOGV("setParameter: key (%s) => value (%s)", key.string(), value.string());
489    if (key == "max-duration") {
490        int64_t max_duration_ms;
491        if (safe_strtoi64(value.string(), &max_duration_ms)) {
492            return setParamMaxFileDurationUs(1000LL * max_duration_ms);
493        }
494    } else if (key == "max-filesize") {
495        int64_t max_filesize_bytes;
496        if (safe_strtoi64(value.string(), &max_filesize_bytes)) {
497            return setParamMaxFileSizeBytes(max_filesize_bytes);
498        }
499    } else if (key == "interleave-duration-us") {
500        int32_t durationUs;
501        if (safe_strtoi32(value.string(), &durationUs)) {
502            return setParamInterleaveDuration(durationUs);
503        }
504    } else if (key == "param-movie-time-scale") {
505        int32_t timeScale;
506        if (safe_strtoi32(value.string(), &timeScale)) {
507            return setParamMovieTimeScale(timeScale);
508        }
509    } else if (key == "param-use-64bit-offset") {
510        int32_t use64BitOffset;
511        if (safe_strtoi32(value.string(), &use64BitOffset)) {
512            return setParam64BitFileOffset(use64BitOffset != 0);
513        }
514    } else if (key == "param-track-frame-status") {
515        int32_t nFrames;
516        if (safe_strtoi32(value.string(), &nFrames)) {
517            return setParamTrackFrameStatus(nFrames);
518        }
519    } else if (key == "param-track-time-status") {
520        int64_t timeDurationUs;
521        if (safe_strtoi64(value.string(), &timeDurationUs)) {
522            return setParamTrackTimeStatus(timeDurationUs);
523        }
524    } else if (key == "audio-param-sampling-rate") {
525        int32_t sampling_rate;
526        if (safe_strtoi32(value.string(), &sampling_rate)) {
527            return setParamAudioSamplingRate(sampling_rate);
528        }
529    } else if (key == "audio-param-number-of-channels") {
530        int32_t number_of_channels;
531        if (safe_strtoi32(value.string(), &number_of_channels)) {
532            return setParamAudioNumberOfChannels(number_of_channels);
533        }
534    } else if (key == "audio-param-encoding-bitrate") {
535        int32_t audio_bitrate;
536        if (safe_strtoi32(value.string(), &audio_bitrate)) {
537            return setParamAudioEncodingBitRate(audio_bitrate);
538        }
539    } else if (key == "audio-param-time-scale") {
540        int32_t timeScale;
541        if (safe_strtoi32(value.string(), &timeScale)) {
542            return setParamAudioTimeScale(timeScale);
543        }
544    } else if (key == "video-param-encoding-bitrate") {
545        int32_t video_bitrate;
546        if (safe_strtoi32(value.string(), &video_bitrate)) {
547            return setParamVideoEncodingBitRate(video_bitrate);
548        }
549    } else if (key == "video-param-i-frames-interval") {
550        int32_t seconds;
551        if (safe_strtoi32(value.string(), &seconds)) {
552            return setParamVideoIFramesInterval(seconds);
553        }
554    } else if (key == "video-param-encoder-profile") {
555        int32_t profile;
556        if (safe_strtoi32(value.string(), &profile)) {
557            return setParamVideoEncoderProfile(profile);
558        }
559    } else if (key == "video-param-encoder-level") {
560        int32_t level;
561        if (safe_strtoi32(value.string(), &level)) {
562            return setParamVideoEncoderLevel(level);
563        }
564    } else if (key == "video-param-camera-id") {
565        int32_t cameraId;
566        if (safe_strtoi32(value.string(), &cameraId)) {
567            return setParamVideoCameraId(cameraId);
568        }
569    } else if (key == "video-param-time-scale") {
570        int32_t timeScale;
571        if (safe_strtoi32(value.string(), &timeScale)) {
572            return setParamVideoTimeScale(timeScale);
573        }
574    } else {
575        LOGE("setParameter: failed to find key %s", key.string());
576    }
577    return BAD_VALUE;
578}
579
580status_t StagefrightRecorder::setParameters(const String8 &params) {
581    LOGV("setParameters: %s", params.string());
582    const char *cparams = params.string();
583    const char *key_start = cparams;
584    for (;;) {
585        const char *equal_pos = strchr(key_start, '=');
586        if (equal_pos == NULL) {
587            LOGE("Parameters %s miss a value", cparams);
588            return BAD_VALUE;
589        }
590        String8 key(key_start, equal_pos - key_start);
591        TrimString(&key);
592        if (key.length() == 0) {
593            LOGE("Parameters %s contains an empty key", cparams);
594            return BAD_VALUE;
595        }
596        const char *value_start = equal_pos + 1;
597        const char *semicolon_pos = strchr(value_start, ';');
598        String8 value;
599        if (semicolon_pos == NULL) {
600            value.setTo(value_start);
601        } else {
602            value.setTo(value_start, semicolon_pos - value_start);
603        }
604        if (setParameter(key, value) != OK) {
605            return BAD_VALUE;
606        }
607        if (semicolon_pos == NULL) {
608            break;  // Reaches the end
609        }
610        key_start = semicolon_pos + 1;
611    }
612    return OK;
613}
614
615status_t StagefrightRecorder::setListener(const sp<IMediaRecorderClient> &listener) {
616    mListener = listener;
617
618    return OK;
619}
620
621status_t StagefrightRecorder::prepare() {
622    return OK;
623}
624
625status_t StagefrightRecorder::start() {
626    CHECK(mOutputFd >= 0);
627
628    if (mWriter != NULL) {
629        LOGE("File writer is not avaialble");
630        return UNKNOWN_ERROR;
631    }
632
633    switch (mOutputFormat) {
634        case OUTPUT_FORMAT_DEFAULT:
635        case OUTPUT_FORMAT_THREE_GPP:
636        case OUTPUT_FORMAT_MPEG_4:
637            return startMPEG4Recording();
638
639        case OUTPUT_FORMAT_AMR_NB:
640        case OUTPUT_FORMAT_AMR_WB:
641            return startAMRRecording();
642
643        case OUTPUT_FORMAT_AAC_ADIF:
644        case OUTPUT_FORMAT_AAC_ADTS:
645            return startAACRecording();
646
647        default:
648            LOGE("Unsupported output file format: %d", mOutputFormat);
649            return UNKNOWN_ERROR;
650    }
651}
652
653sp<MediaSource> StagefrightRecorder::createAudioSource() {
654    sp<AudioSource> audioSource =
655        new AudioSource(
656                mAudioSource,
657                mSampleRate,
658                mAudioChannels);
659
660    status_t err = audioSource->initCheck();
661
662    if (err != OK) {
663        LOGE("audio source is not initialized");
664        return NULL;
665    }
666
667    sp<MetaData> encMeta = new MetaData;
668    const char *mime;
669    switch (mAudioEncoder) {
670        case AUDIO_ENCODER_AMR_NB:
671        case AUDIO_ENCODER_DEFAULT:
672            mime = MEDIA_MIMETYPE_AUDIO_AMR_NB;
673            break;
674        case AUDIO_ENCODER_AMR_WB:
675            mime = MEDIA_MIMETYPE_AUDIO_AMR_WB;
676            break;
677        case AUDIO_ENCODER_AAC:
678            mime = MEDIA_MIMETYPE_AUDIO_AAC;
679            break;
680        default:
681            LOGE("Unknown audio encoder: %d", mAudioEncoder);
682            return NULL;
683    }
684    encMeta->setCString(kKeyMIMEType, mime);
685
686    int32_t maxInputSize;
687    CHECK(audioSource->getFormat()->findInt32(
688                kKeyMaxInputSize, &maxInputSize));
689
690    encMeta->setInt32(kKeyMaxInputSize, maxInputSize);
691    encMeta->setInt32(kKeyChannelCount, mAudioChannels);
692    encMeta->setInt32(kKeySampleRate, mSampleRate);
693    encMeta->setInt32(kKeyBitRate, mAudioBitRate);
694    encMeta->setInt32(kKeyTimeScale, mAudioTimeScale);
695
696    OMXClient client;
697    CHECK_EQ(client.connect(), OK);
698
699    sp<MediaSource> audioEncoder =
700        OMXCodec::Create(client.interface(), encMeta,
701                         true /* createEncoder */, audioSource);
702    mAudioSourceNode = audioSource;
703
704    return audioEncoder;
705}
706
707status_t StagefrightRecorder::startAACRecording() {
708    CHECK(mOutputFormat == OUTPUT_FORMAT_AAC_ADIF ||
709          mOutputFormat == OUTPUT_FORMAT_AAC_ADTS);
710
711    CHECK(mAudioEncoder == AUDIO_ENCODER_AAC);
712    CHECK(mAudioSource != AUDIO_SOURCE_LIST_END);
713
714    CHECK(0 == "AACWriter is not implemented yet");
715
716    return OK;
717}
718
719status_t StagefrightRecorder::startAMRRecording() {
720    CHECK(mOutputFormat == OUTPUT_FORMAT_AMR_NB ||
721          mOutputFormat == OUTPUT_FORMAT_AMR_WB);
722
723    if (mOutputFormat == OUTPUT_FORMAT_AMR_NB) {
724        if (mAudioEncoder != AUDIO_ENCODER_DEFAULT &&
725            mAudioEncoder != AUDIO_ENCODER_AMR_NB) {
726            LOGE("Invalid encoder %d used for AMRNB recording",
727                    mAudioEncoder);
728            return BAD_VALUE;
729        }
730        if (mSampleRate != 8000) {
731            LOGE("Invalid sampling rate %d used for AMRNB recording",
732                    mSampleRate);
733            return BAD_VALUE;
734        }
735    } else {  // mOutputFormat must be OUTPUT_FORMAT_AMR_WB
736        if (mAudioEncoder != AUDIO_ENCODER_AMR_WB) {
737            LOGE("Invlaid encoder %d used for AMRWB recording",
738                    mAudioEncoder);
739            return BAD_VALUE;
740        }
741        if (mSampleRate != 16000) {
742            LOGE("Invalid sample rate %d used for AMRWB recording",
743                    mSampleRate);
744            return BAD_VALUE;
745        }
746    }
747    if (mAudioChannels != 1) {
748        LOGE("Invalid number of audio channels %d used for amr recording",
749                mAudioChannels);
750        return BAD_VALUE;
751    }
752
753    if (mAudioSource >= AUDIO_SOURCE_LIST_END) {
754        LOGE("Invalid audio source: %d", mAudioSource);
755        return BAD_VALUE;
756    }
757
758    sp<MediaSource> audioEncoder = createAudioSource();
759
760    if (audioEncoder == NULL) {
761        return UNKNOWN_ERROR;
762    }
763
764    mWriter = new AMRWriter(dup(mOutputFd));
765    mWriter->addSource(audioEncoder);
766
767    if (mMaxFileDurationUs != 0) {
768        mWriter->setMaxFileDuration(mMaxFileDurationUs);
769    }
770    if (mMaxFileSizeBytes != 0) {
771        mWriter->setMaxFileSize(mMaxFileSizeBytes);
772    }
773    mWriter->setListener(mListener);
774    mWriter->start();
775
776    return OK;
777}
778
779void StagefrightRecorder::clipVideoFrameRate() {
780    LOGV("clipVideoFrameRate: encoder %d", mVideoEncoder);
781    int minFrameRate = mEncoderProfiles->getVideoEncoderParamByName(
782                        "enc.vid.fps.min", mVideoEncoder);
783    int maxFrameRate = mEncoderProfiles->getVideoEncoderParamByName(
784                        "enc.vid.fps.max", mVideoEncoder);
785    if (mFrameRate < minFrameRate) {
786        LOGW("Intended video encoding frame rate (%d fps) is too small"
787             " and will be set to (%d fps)", mFrameRate, minFrameRate);
788        mFrameRate = minFrameRate;
789    } else if (mFrameRate > maxFrameRate) {
790        LOGW("Intended video encoding frame rate (%d fps) is too large"
791             " and will be set to (%d fps)", mFrameRate, maxFrameRate);
792        mFrameRate = maxFrameRate;
793    }
794}
795
796void StagefrightRecorder::clipVideoBitRate() {
797    LOGV("clipVideoBitRate: encoder %d", mVideoEncoder);
798    int minBitRate = mEncoderProfiles->getVideoEncoderParamByName(
799                        "enc.vid.bps.min", mVideoEncoder);
800    int maxBitRate = mEncoderProfiles->getVideoEncoderParamByName(
801                        "enc.vid.bps.max", mVideoEncoder);
802    if (mVideoBitRate < minBitRate) {
803        LOGW("Intended video encoding bit rate (%d bps) is too small"
804             " and will be set to (%d bps)", mVideoBitRate, minBitRate);
805        mVideoBitRate = minBitRate;
806    } else if (mVideoBitRate > maxBitRate) {
807        LOGW("Intended video encoding bit rate (%d bps) is too large"
808             " and will be set to (%d bps)", mVideoBitRate, maxBitRate);
809        mVideoBitRate = maxBitRate;
810    }
811}
812
813void StagefrightRecorder::clipVideoFrameWidth() {
814    LOGV("clipVideoFrameWidth: encoder %d", mVideoEncoder);
815    int minFrameWidth = mEncoderProfiles->getVideoEncoderParamByName(
816                        "enc.vid.width.min", mVideoEncoder);
817    int maxFrameWidth = mEncoderProfiles->getVideoEncoderParamByName(
818                        "enc.vid.width.max", mVideoEncoder);
819    if (mVideoWidth < minFrameWidth) {
820        LOGW("Intended video encoding frame width (%d) is too small"
821             " and will be set to (%d)", mVideoWidth, minFrameWidth);
822        mVideoWidth = minFrameWidth;
823    } else if (mVideoWidth > maxFrameWidth) {
824        LOGW("Intended video encoding frame width (%d) is too large"
825             " and will be set to (%d)", mVideoWidth, maxFrameWidth);
826        mVideoWidth = maxFrameWidth;
827    }
828}
829
830status_t StagefrightRecorder::setupCameraSource() {
831    clipVideoBitRate();
832    clipVideoFrameRate();
833    clipVideoFrameWidth();
834    clipVideoFrameHeight();
835
836    int64_t token = IPCThreadState::self()->clearCallingIdentity();
837    if (mCamera == 0) {
838        mCamera = Camera::connect(mCameraId);
839        if (mCamera == 0) {
840            LOGE("Camera connection could not be established.");
841            return -EBUSY;
842        }
843        mFlags &= ~FLAGS_HOT_CAMERA;
844        mCamera->lock();
845    }
846
847    // Set the actual video recording frame size
848    CameraParameters params(mCamera->getParameters());
849    params.setPreviewSize(mVideoWidth, mVideoHeight);
850    params.setPreviewFrameRate(mFrameRate);
851    String8 s = params.flatten();
852    CHECK_EQ(OK, mCamera->setParameters(s));
853    CameraParameters newCameraParams(mCamera->getParameters());
854
855    // Check on video frame size
856    int frameWidth = 0, frameHeight = 0;
857    newCameraParams.getPreviewSize(&frameWidth, &frameHeight);
858    if (frameWidth  < 0 || frameWidth  != mVideoWidth ||
859        frameHeight < 0 || frameHeight != mVideoHeight) {
860        LOGE("Failed to set the video frame size to %dx%d",
861                mVideoWidth, mVideoHeight);
862        IPCThreadState::self()->restoreCallingIdentity(token);
863        return UNKNOWN_ERROR;
864    }
865
866    // Check on video frame rate
867    int frameRate = newCameraParams.getPreviewFrameRate();
868    if (frameRate < 0 || (frameRate - mFrameRate) != 0) {
869        LOGE("Failed to set frame rate to %d fps. The actual "
870             "frame rate is %d", mFrameRate, frameRate);
871    }
872
873    CHECK_EQ(OK, mCamera->setPreviewDisplay(mPreviewSurface));
874    IPCThreadState::self()->restoreCallingIdentity(token);
875    return OK;
876}
877
878void StagefrightRecorder::clipVideoFrameHeight() {
879    LOGV("clipVideoFrameHeight: encoder %d", mVideoEncoder);
880    int minFrameHeight = mEncoderProfiles->getVideoEncoderParamByName(
881                        "enc.vid.height.min", mVideoEncoder);
882    int maxFrameHeight = mEncoderProfiles->getVideoEncoderParamByName(
883                        "enc.vid.height.max", mVideoEncoder);
884    if (mVideoHeight < minFrameHeight) {
885        LOGW("Intended video encoding frame height (%d) is too small"
886             " and will be set to (%d)", mVideoHeight, minFrameHeight);
887        mVideoHeight = minFrameHeight;
888    } else if (mVideoHeight > maxFrameHeight) {
889        LOGW("Intended video encoding frame height (%d) is too large"
890             " and will be set to (%d)", mVideoHeight, maxFrameHeight);
891        mVideoHeight = maxFrameHeight;
892    }
893}
894
895status_t StagefrightRecorder::setupVideoEncoder(const sp<MediaWriter>& writer) {
896    status_t err = setupCameraSource();
897    if (err != OK) return err;
898
899    sp<CameraSource> cameraSource = (mCaptureTimeLapse) ?
900        CameraSourceTimeLapse::CreateFromCamera(mCamera, true, 3E6, mFrameRate):
901        CameraSource::CreateFromCamera(mCamera);
902    CHECK(cameraSource != NULL);
903
904    sp<MetaData> enc_meta = new MetaData;
905    enc_meta->setInt32(kKeyBitRate, mVideoBitRate);
906    enc_meta->setInt32(kKeySampleRate, mFrameRate);
907
908    switch (mVideoEncoder) {
909        case VIDEO_ENCODER_H263:
910            enc_meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_VIDEO_H263);
911            break;
912
913        case VIDEO_ENCODER_MPEG_4_SP:
914            enc_meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_VIDEO_MPEG4);
915            break;
916
917        case VIDEO_ENCODER_H264:
918            enc_meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_VIDEO_AVC);
919            break;
920
921        default:
922            CHECK(!"Should not be here, unsupported video encoding.");
923            break;
924    }
925
926    sp<MetaData> meta = cameraSource->getFormat();
927
928    int32_t width, height, stride, sliceHeight, colorFormat;
929    CHECK(meta->findInt32(kKeyWidth, &width));
930    CHECK(meta->findInt32(kKeyHeight, &height));
931    CHECK(meta->findInt32(kKeyStride, &stride));
932    CHECK(meta->findInt32(kKeySliceHeight, &sliceHeight));
933    CHECK(meta->findInt32(kKeyColorFormat, &colorFormat));
934
935    enc_meta->setInt32(kKeyWidth, width);
936    enc_meta->setInt32(kKeyHeight, height);
937    enc_meta->setInt32(kKeyIFramesInterval, mIFramesIntervalSec);
938    enc_meta->setInt32(kKeyStride, stride);
939    enc_meta->setInt32(kKeySliceHeight, sliceHeight);
940    enc_meta->setInt32(kKeyColorFormat, colorFormat);
941    enc_meta->setInt32(kKeyTimeScale, mVideoTimeScale);
942    if (mVideoEncoderProfile != -1) {
943        enc_meta->setInt32(kKeyVideoProfile, mVideoEncoderProfile);
944    }
945    if (mVideoEncoderLevel != -1) {
946        enc_meta->setInt32(kKeyVideoLevel, mVideoEncoderLevel);
947    }
948
949    OMXClient client;
950    CHECK_EQ(client.connect(), OK);
951
952    uint32_t encoder_flags = (mCaptureTimeLapse) ? OMXCodec::kPreferSoftwareCodecs : 0;
953    sp<MediaSource> encoder = OMXCodec::Create(
954            client.interface(), enc_meta,
955            true /* createEncoder */, cameraSource,
956            NULL, encoder_flags);
957    if (encoder == NULL) {
958        return UNKNOWN_ERROR;
959    }
960
961    writer->addSource(encoder);
962    return OK;
963}
964
965status_t StagefrightRecorder::setupAudioEncoder(const sp<MediaWriter>& writer) {
966    sp<MediaSource> audioEncoder;
967    switch(mAudioEncoder) {
968        case AUDIO_ENCODER_AMR_NB:
969        case AUDIO_ENCODER_AMR_WB:
970        case AUDIO_ENCODER_AAC:
971            audioEncoder = createAudioSource();
972            break;
973        default:
974            LOGE("Unsupported audio encoder: %d", mAudioEncoder);
975            return UNKNOWN_ERROR;
976    }
977
978    if (audioEncoder == NULL) {
979        return UNKNOWN_ERROR;
980    }
981
982    writer->addSource(audioEncoder);
983    return OK;
984}
985
986status_t StagefrightRecorder::startMPEG4Recording() {
987    int32_t totalBitRate = 0;
988    status_t err = OK;
989    sp<MediaWriter> writer = new MPEG4Writer(dup(mOutputFd));
990
991    // Add audio source first if it exists
992    if (!mCaptureTimeLapse && (mAudioSource != AUDIO_SOURCE_LIST_END)) {
993        err = setupAudioEncoder(writer);
994        if (err != OK) return err;
995        totalBitRate += mAudioBitRate;
996    }
997    if (mVideoSource == VIDEO_SOURCE_DEFAULT
998            || mVideoSource == VIDEO_SOURCE_CAMERA) {
999        err = setupVideoEncoder(writer);
1000        if (err != OK) return err;
1001        totalBitRate += mVideoBitRate;
1002    }
1003
1004    reinterpret_cast<MPEG4Writer *>(writer.get())->
1005        setInterleaveDuration(mInterleaveDurationUs);
1006
1007    if (mMaxFileDurationUs != 0) {
1008        writer->setMaxFileDuration(mMaxFileDurationUs);
1009    }
1010    if (mMaxFileSizeBytes != 0) {
1011        writer->setMaxFileSize(mMaxFileSizeBytes);
1012    }
1013    sp<MetaData> meta = new MetaData;
1014    meta->setInt64(kKeyTime, systemTime() / 1000);
1015    meta->setInt32(kKeyFileType, mOutputFormat);
1016    meta->setInt32(kKeyBitRate, totalBitRate);
1017    meta->setInt32(kKey64BitFileOffset, mUse64BitFileOffset);
1018    meta->setInt32(kKeyTimeScale, mMovieTimeScale);
1019    if (mTrackEveryNumberOfFrames > 0) {
1020        meta->setInt32(kKeyTrackFrameStatus, mTrackEveryNumberOfFrames);
1021    }
1022    if (mTrackEveryTimeDurationUs > 0) {
1023        meta->setInt64(kKeyTrackTimeStatus, mTrackEveryTimeDurationUs);
1024    }
1025    writer->setListener(mListener);
1026    mWriter = writer;
1027    return mWriter->start(meta.get());
1028}
1029
1030status_t StagefrightRecorder::pause() {
1031    LOGV("pause");
1032    if (mWriter == NULL) {
1033        return UNKNOWN_ERROR;
1034    }
1035    mWriter->pause();
1036    return OK;
1037}
1038
1039status_t StagefrightRecorder::stop() {
1040    LOGV("stop");
1041    if (mWriter != NULL) {
1042        mWriter->stop();
1043        mWriter.clear();
1044    }
1045
1046    if (mCamera != 0) {
1047        LOGV("Disconnect camera");
1048        int64_t token = IPCThreadState::self()->clearCallingIdentity();
1049        if ((mFlags & FLAGS_HOT_CAMERA) == 0) {
1050            LOGV("Camera was cold when we started, stopping preview");
1051            mCamera->stopPreview();
1052        }
1053        mCamera->unlock();
1054        mCamera.clear();
1055        IPCThreadState::self()->restoreCallingIdentity(token);
1056        mFlags = 0;
1057    }
1058
1059    return OK;
1060}
1061
1062status_t StagefrightRecorder::close() {
1063    LOGV("close");
1064    stop();
1065
1066    return OK;
1067}
1068
1069status_t StagefrightRecorder::reset() {
1070    LOGV("reset");
1071    stop();
1072
1073    // No audio or video source by default
1074    mAudioSource = AUDIO_SOURCE_LIST_END;
1075    mVideoSource = VIDEO_SOURCE_LIST_END;
1076
1077    // Default parameters
1078    mOutputFormat  = OUTPUT_FORMAT_THREE_GPP;
1079    mAudioEncoder  = AUDIO_ENCODER_AMR_NB;
1080    mVideoEncoder  = VIDEO_ENCODER_H263;
1081    mVideoWidth    = 176;
1082    mVideoHeight   = 144;
1083    mFrameRate     = 20;
1084    mVideoBitRate  = 192000;
1085    mSampleRate    = 8000;
1086    mAudioChannels = 1;
1087    mAudioBitRate  = 12200;
1088    mInterleaveDurationUs = 0;
1089    mIFramesIntervalSec = 1;
1090    mAudioSourceNode = 0;
1091    mUse64BitFileOffset = false;
1092    mMovieTimeScale  = 1000;
1093    mAudioTimeScale  = 1000;
1094    mVideoTimeScale  = 1000;
1095    mCameraId        = 0;
1096    mVideoEncoderProfile = -1;
1097    mVideoEncoderLevel   = -1;
1098    mMaxFileDurationUs = 0;
1099    mMaxFileSizeBytes = 0;
1100    mTrackEveryNumberOfFrames = 0;
1101    mTrackEveryTimeDurationUs = 0;
1102    mCaptureTimeLapse = false;
1103    mEncoderProfiles = MediaProfiles::getInstance();
1104
1105    mOutputFd = -1;
1106    mFlags = 0;
1107
1108    return OK;
1109}
1110
1111status_t StagefrightRecorder::getMaxAmplitude(int *max) {
1112    LOGV("getMaxAmplitude");
1113
1114    if (max == NULL) {
1115        LOGE("Null pointer argument");
1116        return BAD_VALUE;
1117    }
1118
1119    if (mAudioSourceNode != 0) {
1120        *max = mAudioSourceNode->getMaxAmplitude();
1121    } else {
1122        *max = 0;
1123    }
1124
1125    return OK;
1126}
1127
1128status_t StagefrightRecorder::dump(int fd, const Vector<String16>& args) const {
1129    const size_t SIZE = 256;
1130    char buffer[SIZE];
1131    String8 result;
1132    snprintf(buffer, SIZE, "   Recorder: %p", this);
1133    snprintf(buffer, SIZE, "   Output file (fd %d):\n", mOutputFd);
1134    result.append(buffer);
1135    snprintf(buffer, SIZE, "     File format: %d\n", mOutputFormat);
1136    result.append(buffer);
1137    snprintf(buffer, SIZE, "     Max file size (bytes): %lld\n", mMaxFileSizeBytes);
1138    result.append(buffer);
1139    snprintf(buffer, SIZE, "     Max file duration (us): %lld\n", mMaxFileDurationUs);
1140    result.append(buffer);
1141    snprintf(buffer, SIZE, "     File offset length (bits): %d\n", mUse64BitFileOffset? 64: 32);
1142    result.append(buffer);
1143    snprintf(buffer, SIZE, "     Interleave duration (us): %d\n", mInterleaveDurationUs);
1144    result.append(buffer);
1145    snprintf(buffer, SIZE, "     Progress notification: %d frames\n", mTrackEveryNumberOfFrames);
1146    result.append(buffer);
1147    snprintf(buffer, SIZE, "     Progress notification: %lld us\n", mTrackEveryTimeDurationUs);
1148    result.append(buffer);
1149    snprintf(buffer, SIZE, "   Audio\n");
1150    result.append(buffer);
1151    snprintf(buffer, SIZE, "     Source: %d\n", mAudioSource);
1152    result.append(buffer);
1153    snprintf(buffer, SIZE, "     Encoder: %d\n", mAudioEncoder);
1154    result.append(buffer);
1155    snprintf(buffer, SIZE, "     Bit rate (bps): %d\n", mAudioBitRate);
1156    result.append(buffer);
1157    snprintf(buffer, SIZE, "     Sampling rate (hz): %d\n", mSampleRate);
1158    result.append(buffer);
1159    snprintf(buffer, SIZE, "     Number of channels: %d\n", mAudioChannels);
1160    result.append(buffer);
1161    snprintf(buffer, SIZE, "     Max amplitude: %d\n", mAudioSourceNode == 0? 0: mAudioSourceNode->getMaxAmplitude());
1162    result.append(buffer);
1163    snprintf(buffer, SIZE, "   Video\n");
1164    result.append(buffer);
1165    snprintf(buffer, SIZE, "     Source: %d\n", mVideoSource);
1166    result.append(buffer);
1167    snprintf(buffer, SIZE, "     Camera Id: %d\n", mCameraId);
1168    result.append(buffer);
1169    snprintf(buffer, SIZE, "     Camera flags: %d\n", mFlags);
1170    result.append(buffer);
1171    snprintf(buffer, SIZE, "     Encoder: %d\n", mVideoEncoder);
1172    result.append(buffer);
1173    snprintf(buffer, SIZE, "     Encoder profile: %d\n", mVideoEncoderProfile);
1174    result.append(buffer);
1175    snprintf(buffer, SIZE, "     Encoder level: %d\n", mVideoEncoderLevel);
1176    result.append(buffer);
1177    snprintf(buffer, SIZE, "     I frames interval (s): %d\n", mIFramesIntervalSec);
1178    result.append(buffer);
1179    snprintf(buffer, SIZE, "     Frame size (pixels): %dx%d\n", mVideoWidth, mVideoHeight);
1180    result.append(buffer);
1181    snprintf(buffer, SIZE, "     Frame rate (fps): %d\n", mFrameRate);
1182    result.append(buffer);
1183    snprintf(buffer, SIZE, "     Bit rate (bps): %d\n", mVideoBitRate);
1184    result.append(buffer);
1185    ::write(fd, result.string(), result.size());
1186    return OK;
1187}
1188}  // namespace android
1189