StagefrightRecorder.cpp revision 37187916a486504acaf83bea30147eb5fbf46ae5 
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
43#include "ARTPWriter.h"
44
45namespace android {
46
47StagefrightRecorder::StagefrightRecorder()
48    : mWriter(NULL),
49      mOutputFd(-1) {
50
51    LOGV("Constructor");
52    reset();
53}
54
55StagefrightRecorder::~StagefrightRecorder() {
56    LOGV("Destructor");
57    stop();
58}
59
60status_t StagefrightRecorder::init() {
61    LOGV("init");
62    return OK;
63}
64
65status_t StagefrightRecorder::setAudioSource(audio_source as) {
66    LOGV("setAudioSource: %d", as);
67    if (as < AUDIO_SOURCE_DEFAULT ||
68        as >= AUDIO_SOURCE_LIST_END) {
69        LOGE("Invalid audio source: %d", as);
70        return BAD_VALUE;
71    }
72
73    if (as == AUDIO_SOURCE_DEFAULT) {
74        mAudioSource = AUDIO_SOURCE_MIC;
75    } else {
76        mAudioSource = as;
77    }
78
79    return OK;
80}
81
82status_t StagefrightRecorder::setVideoSource(video_source vs) {
83    LOGV("setVideoSource: %d", vs);
84    if (vs < VIDEO_SOURCE_DEFAULT ||
85        vs >= VIDEO_SOURCE_LIST_END) {
86        LOGE("Invalid video source: %d", vs);
87        return BAD_VALUE;
88    }
89
90    if (vs == VIDEO_SOURCE_DEFAULT) {
91        mVideoSource = VIDEO_SOURCE_CAMERA;
92    } else {
93        mVideoSource = vs;
94    }
95
96    return OK;
97}
98
99status_t StagefrightRecorder::setOutputFormat(output_format of) {
100    LOGV("setOutputFormat: %d", of);
101    if (of < OUTPUT_FORMAT_DEFAULT ||
102        of >= OUTPUT_FORMAT_LIST_END) {
103        LOGE("Invalid output format: %d", of);
104        return BAD_VALUE;
105    }
106
107    if (of == OUTPUT_FORMAT_DEFAULT) {
108        mOutputFormat = OUTPUT_FORMAT_THREE_GPP;
109    } else {
110        mOutputFormat = of;
111    }
112
113    return OK;
114}
115
116status_t StagefrightRecorder::setAudioEncoder(audio_encoder ae) {
117    LOGV("setAudioEncoder: %d", ae);
118    if (ae < AUDIO_ENCODER_DEFAULT ||
119        ae >= AUDIO_ENCODER_LIST_END) {
120        LOGE("Invalid audio encoder: %d", ae);
121        return BAD_VALUE;
122    }
123
124    if (ae == AUDIO_ENCODER_DEFAULT) {
125        mAudioEncoder = AUDIO_ENCODER_AMR_NB;
126    } else {
127        mAudioEncoder = ae;
128    }
129
130    return OK;
131}
132
133status_t StagefrightRecorder::setVideoEncoder(video_encoder ve) {
134    LOGV("setVideoEncoder: %d", ve);
135    if (ve < VIDEO_ENCODER_DEFAULT ||
136        ve >= VIDEO_ENCODER_LIST_END) {
137        LOGE("Invalid video encoder: %d", ve);
138        return BAD_VALUE;
139    }
140
141    if (ve == VIDEO_ENCODER_DEFAULT) {
142        mVideoEncoder = VIDEO_ENCODER_H263;
143    } else {
144        mVideoEncoder = ve;
145    }
146
147    return OK;
148}
149
150status_t StagefrightRecorder::setVideoSize(int width, int height) {
151    LOGV("setVideoSize: %dx%d", width, height);
152    if (width <= 0 || height <= 0) {
153        LOGE("Invalid video size: %dx%d", width, height);
154        return BAD_VALUE;
155    }
156
157    // Additional check on the dimension will be performed later
158    mVideoWidth = width;
159    mVideoHeight = height;
160
161    return OK;
162}
163
164status_t StagefrightRecorder::setVideoFrameRate(int frames_per_second) {
165    LOGV("setVideoFrameRate: %d", frames_per_second);
166    if (frames_per_second <= 0 || frames_per_second > 30) {
167        LOGE("Invalid video frame rate: %d", frames_per_second);
168        return BAD_VALUE;
169    }
170
171    // Additional check on the frame rate will be performed later
172    mFrameRate = frames_per_second;
173
174    return OK;
175}
176
177status_t StagefrightRecorder::setCamera(const sp<ICamera> &camera) {
178    LOGV("setCamera");
179    if (camera == 0) {
180        LOGE("camera is NULL");
181        return BAD_VALUE;
182    }
183
184    int64_t token = IPCThreadState::self()->clearCallingIdentity();
185    mFlags &= ~FLAGS_HOT_CAMERA;
186    mCamera = Camera::create(camera);
187    if (mCamera == 0) {
188        LOGE("Unable to connect to camera");
189        IPCThreadState::self()->restoreCallingIdentity(token);
190        return -EBUSY;
191    }
192
193    LOGV("Connected to camera");
194    if (mCamera->previewEnabled()) {
195        LOGV("camera is hot");
196        mFlags |= FLAGS_HOT_CAMERA;
197    }
198    IPCThreadState::self()->restoreCallingIdentity(token);
199
200    return OK;
201}
202
203status_t StagefrightRecorder::setPreviewSurface(const sp<ISurface> &surface) {
204    LOGV("setPreviewSurface: %p", surface.get());
205    mPreviewSurface = surface;
206
207    return OK;
208}
209
210status_t StagefrightRecorder::setOutputFile(const char *path) {
211    LOGE("setOutputFile(const char*) must not be called");
212    // We don't actually support this at all, as the media_server process
213    // no longer has permissions to create files.
214
215    return -EPERM;
216}
217
218status_t StagefrightRecorder::setOutputFile(int fd, int64_t offset, int64_t length) {
219    LOGV("setOutputFile: %d, %lld, %lld", fd, offset, length);
220    // These don't make any sense, do they?
221    CHECK_EQ(offset, 0);
222    CHECK_EQ(length, 0);
223
224    if (fd < 0) {
225        LOGE("Invalid file descriptor: %d", fd);
226        return -EBADF;
227    }
228
229    if (mOutputFd >= 0) {
230        ::close(mOutputFd);
231    }
232    mOutputFd = dup(fd);
233
234    return OK;
235}
236
237// Attempt to parse an int64 literal optionally surrounded by whitespace,
238// returns true on success, false otherwise.
239static bool safe_strtoi64(const char *s, int64_t *val) {
240    char *end;
241    *val = strtoll(s, &end, 10);
242
243    if (end == s || errno == ERANGE) {
244        return false;
245    }
246
247    // Skip trailing whitespace
248    while (isspace(*end)) {
249        ++end;
250    }
251
252    // For a successful return, the string must contain nothing but a valid
253    // int64 literal optionally surrounded by whitespace.
254
255    return *end == '\0';
256}
257
258// Return true if the value is in [0, 0x007FFFFFFF]
259static bool safe_strtoi32(const char *s, int32_t *val) {
260    int64_t temp;
261    if (safe_strtoi64(s, &temp)) {
262        if (temp >= 0 && temp <= 0x007FFFFFFF) {
263            *val = static_cast<int32_t>(temp);
264            return true;
265        }
266    }
267    return false;
268}
269
270// Trim both leading and trailing whitespace from the given string.
271static void TrimString(String8 *s) {
272    size_t num_bytes = s->bytes();
273    const char *data = s->string();
274
275    size_t leading_space = 0;
276    while (leading_space < num_bytes && isspace(data[leading_space])) {
277        ++leading_space;
278    }
279
280    size_t i = num_bytes;
281    while (i > leading_space && isspace(data[i - 1])) {
282        --i;
283    }
284
285    s->setTo(String8(&data[leading_space], i - leading_space));
286}
287
288status_t StagefrightRecorder::setParamAudioSamplingRate(int32_t sampleRate) {
289    LOGV("setParamAudioSamplingRate: %d", sampleRate);
290    if (sampleRate <= 0) {
291        LOGE("Invalid audio sampling rate: %d", sampleRate);
292        return BAD_VALUE;
293    }
294
295    // Additional check on the sample rate will be performed later.
296    mSampleRate = sampleRate;
297    return OK;
298}
299
300status_t StagefrightRecorder::setParamAudioNumberOfChannels(int32_t channels) {
301    LOGV("setParamAudioNumberOfChannels: %d", channels);
302    if (channels <= 0 || channels >= 3) {
303        LOGE("Invalid number of audio channels: %d", channels);
304        return BAD_VALUE;
305    }
306
307    // Additional check on the number of channels will be performed later.
308    mAudioChannels = channels;
309    return OK;
310}
311
312status_t StagefrightRecorder::setParamAudioEncodingBitRate(int32_t bitRate) {
313    LOGV("setParamAudioEncodingBitRate: %d", bitRate);
314    if (bitRate <= 0) {
315        LOGE("Invalid audio encoding bit rate: %d", bitRate);
316        return BAD_VALUE;
317    }
318
319    // The target bit rate may not be exactly the same as the requested.
320    // It depends on many factors, such as rate control, and the bit rate
321    // range that a specific encoder supports. The mismatch between the
322    // the target and requested bit rate will NOT be treated as an error.
323    mAudioBitRate = bitRate;
324    return OK;
325}
326
327status_t StagefrightRecorder::setParamVideoEncodingBitRate(int32_t bitRate) {
328    LOGV("setParamVideoEncodingBitRate: %d", bitRate);
329    if (bitRate <= 0) {
330        LOGE("Invalid video encoding bit rate: %d", bitRate);
331        return BAD_VALUE;
332    }
333
334    // The target bit rate may not be exactly the same as the requested.
335    // It depends on many factors, such as rate control, and the bit rate
336    // range that a specific encoder supports. The mismatch between the
337    // the target and requested bit rate will NOT be treated as an error.
338    mVideoBitRate = bitRate;
339    return OK;
340}
341
342status_t StagefrightRecorder::setParamMaxFileDurationUs(int64_t timeUs) {
343    LOGV("setParamMaxFileDurationUs: %lld us", timeUs);
344    if (timeUs <= 100000LL) {  // XXX: 100 milli-seconds
345        LOGE("Max file duration is too short: %lld us", timeUs);
346        return BAD_VALUE;
347    }
348    mMaxFileDurationUs = timeUs;
349    return OK;
350}
351
352status_t StagefrightRecorder::setParamMaxFileSizeBytes(int64_t bytes) {
353    LOGV("setParamMaxFileSizeBytes: %lld bytes", bytes);
354    if (bytes <= 1024) {  // XXX: 1 kB
355        LOGE("Max file size is too small: %lld bytes", bytes);
356        return BAD_VALUE;
357    }
358    mMaxFileSizeBytes = bytes;
359    return OK;
360}
361
362status_t StagefrightRecorder::setParamInterleaveDuration(int32_t durationUs) {
363    LOGV("setParamInterleaveDuration: %d", durationUs);
364    if (durationUs <= 500000) {           //  500 ms
365        // If interleave duration is too small, it is very inefficient to do
366        // interleaving since the metadata overhead will count for a significant
367        // portion of the saved contents
368        LOGE("Audio/video interleave duration is too small: %d us", durationUs);
369        return BAD_VALUE;
370    } else if (durationUs >= 10000000) {  // 10 seconds
371        // If interleaving duration is too large, it can cause the recording
372        // session to use too much memory since we have to save the output
373        // data before we write them out
374        LOGE("Audio/video interleave duration is too large: %d us", durationUs);
375        return BAD_VALUE;
376    }
377    mInterleaveDurationUs = durationUs;
378    return OK;
379}
380
381// If seconds <  0, only the first frame is I frame, and rest are all P frames
382// If seconds == 0, all frames are encoded as I frames. No P frames
383// If seconds >  0, it is the time spacing (seconds) between 2 neighboring I frames
384status_t StagefrightRecorder::setParamVideoIFramesInterval(int32_t seconds) {
385    LOGV("setParamVideoIFramesInterval: %d seconds", seconds);
386    mIFramesIntervalSec = seconds;
387    return OK;
388}
389
390status_t StagefrightRecorder::setParam64BitFileOffset(bool use64Bit) {
391    LOGV("setParam64BitFileOffset: %s",
392        use64Bit? "use 64 bit file offset": "use 32 bit file offset");
393    mUse64BitFileOffset = use64Bit;
394    return OK;
395}
396
397status_t StagefrightRecorder::setParamVideoCameraId(int32_t cameraId) {
398    LOGV("setParamVideoCameraId: %d", cameraId);
399    if (cameraId < 0) {
400        return BAD_VALUE;
401    }
402    mCameraId = cameraId;
403    return OK;
404}
405
406status_t StagefrightRecorder::setParamTrackTimeStatus(int64_t timeDurationUs) {
407    LOGV("setParamTrackTimeStatus: %lld", timeDurationUs);
408    if (timeDurationUs < 20000) {  // Infeasible if shorter than 20 ms?
409        LOGE("Tracking time duration too short: %lld us", timeDurationUs);
410        return BAD_VALUE;
411    }
412    mTrackEveryTimeDurationUs = timeDurationUs;
413    return OK;
414}
415
416status_t StagefrightRecorder::setParamVideoEncoderProfile(int32_t profile) {
417    LOGV("setParamVideoEncoderProfile: %d", profile);
418
419    // Additional check will be done later when we load the encoder.
420    // For now, we are accepting values defined in OpenMAX IL.
421    mVideoEncoderProfile = profile;
422    return OK;
423}
424
425status_t StagefrightRecorder::setParamVideoEncoderLevel(int32_t level) {
426    LOGV("setParamVideoEncoderLevel: %d", level);
427
428    // Additional check will be done later when we load the encoder.
429    // For now, we are accepting values defined in OpenMAX IL.
430    mVideoEncoderLevel = level;
431    return OK;
432}
433
434status_t StagefrightRecorder::setParamMovieTimeScale(int32_t timeScale) {
435    LOGV("setParamMovieTimeScale: %d", timeScale);
436
437    // The range is set to be the same as the audio's time scale range
438    // since audio's time scale has a wider range.
439    if (timeScale < 600 || timeScale > 96000) {
440        LOGE("Time scale (%d) for movie is out of range [600, 96000]", timeScale);
441        return BAD_VALUE;
442    }
443    mMovieTimeScale = timeScale;
444    return OK;
445}
446
447status_t StagefrightRecorder::setParamVideoTimeScale(int32_t timeScale) {
448    LOGV("setParamVideoTimeScale: %d", timeScale);
449
450    // 60000 is chosen to make sure that each video frame from a 60-fps
451    // video has 1000 ticks.
452    if (timeScale < 600 || timeScale > 60000) {
453        LOGE("Time scale (%d) for video is out of range [600, 60000]", timeScale);
454        return BAD_VALUE;
455    }
456    mVideoTimeScale = timeScale;
457    return OK;
458}
459
460status_t StagefrightRecorder::setParamAudioTimeScale(int32_t timeScale) {
461    LOGV("setParamAudioTimeScale: %d", timeScale);
462
463    // 96000 Hz is the highest sampling rate support in AAC.
464    if (timeScale < 600 || timeScale > 96000) {
465        LOGE("Time scale (%d) for audio is out of range [600, 96000]", timeScale);
466        return BAD_VALUE;
467    }
468    mAudioTimeScale = timeScale;
469    return OK;
470}
471
472status_t StagefrightRecorder::setParameter(
473        const String8 &key, const String8 &value) {
474    LOGV("setParameter: key (%s) => value (%s)", key.string(), value.string());
475    if (key == "max-duration") {
476        int64_t max_duration_ms;
477        if (safe_strtoi64(value.string(), &max_duration_ms)) {
478            return setParamMaxFileDurationUs(1000LL * max_duration_ms);
479        }
480    } else if (key == "max-filesize") {
481        int64_t max_filesize_bytes;
482        if (safe_strtoi64(value.string(), &max_filesize_bytes)) {
483            return setParamMaxFileSizeBytes(max_filesize_bytes);
484        }
485    } else if (key == "interleave-duration-us") {
486        int32_t durationUs;
487        if (safe_strtoi32(value.string(), &durationUs)) {
488            return setParamInterleaveDuration(durationUs);
489        }
490    } else if (key == "param-movie-time-scale") {
491        int32_t timeScale;
492        if (safe_strtoi32(value.string(), &timeScale)) {
493            return setParamMovieTimeScale(timeScale);
494        }
495    } else if (key == "param-use-64bit-offset") {
496        int32_t use64BitOffset;
497        if (safe_strtoi32(value.string(), &use64BitOffset)) {
498            return setParam64BitFileOffset(use64BitOffset != 0);
499        }
500    } else if (key == "param-track-time-status") {
501        int64_t timeDurationUs;
502        if (safe_strtoi64(value.string(), &timeDurationUs)) {
503            return setParamTrackTimeStatus(timeDurationUs);
504        }
505    } else if (key == "audio-param-sampling-rate") {
506        int32_t sampling_rate;
507        if (safe_strtoi32(value.string(), &sampling_rate)) {
508            return setParamAudioSamplingRate(sampling_rate);
509        }
510    } else if (key == "audio-param-number-of-channels") {
511        int32_t number_of_channels;
512        if (safe_strtoi32(value.string(), &number_of_channels)) {
513            return setParamAudioNumberOfChannels(number_of_channels);
514        }
515    } else if (key == "audio-param-encoding-bitrate") {
516        int32_t audio_bitrate;
517        if (safe_strtoi32(value.string(), &audio_bitrate)) {
518            return setParamAudioEncodingBitRate(audio_bitrate);
519        }
520    } else if (key == "audio-param-time-scale") {
521        int32_t timeScale;
522        if (safe_strtoi32(value.string(), &timeScale)) {
523            return setParamAudioTimeScale(timeScale);
524        }
525    } else if (key == "video-param-encoding-bitrate") {
526        int32_t video_bitrate;
527        if (safe_strtoi32(value.string(), &video_bitrate)) {
528            return setParamVideoEncodingBitRate(video_bitrate);
529        }
530    } else if (key == "video-param-i-frames-interval") {
531        int32_t seconds;
532        if (safe_strtoi32(value.string(), &seconds)) {
533            return setParamVideoIFramesInterval(seconds);
534        }
535    } else if (key == "video-param-encoder-profile") {
536        int32_t profile;
537        if (safe_strtoi32(value.string(), &profile)) {
538            return setParamVideoEncoderProfile(profile);
539        }
540    } else if (key == "video-param-encoder-level") {
541        int32_t level;
542        if (safe_strtoi32(value.string(), &level)) {
543            return setParamVideoEncoderLevel(level);
544        }
545    } else if (key == "video-param-camera-id") {
546        int32_t cameraId;
547        if (safe_strtoi32(value.string(), &cameraId)) {
548            return setParamVideoCameraId(cameraId);
549        }
550    } else if (key == "video-param-time-scale") {
551        int32_t timeScale;
552        if (safe_strtoi32(value.string(), &timeScale)) {
553            return setParamVideoTimeScale(timeScale);
554        }
555    } else {
556        LOGE("setParameter: failed to find key %s", key.string());
557    }
558    return BAD_VALUE;
559}
560
561status_t StagefrightRecorder::setParameters(const String8 &params) {
562    LOGV("setParameters: %s", params.string());
563    const char *cparams = params.string();
564    const char *key_start = cparams;
565    for (;;) {
566        const char *equal_pos = strchr(key_start, '=');
567        if (equal_pos == NULL) {
568            LOGE("Parameters %s miss a value", cparams);
569            return BAD_VALUE;
570        }
571        String8 key(key_start, equal_pos - key_start);
572        TrimString(&key);
573        if (key.length() == 0) {
574            LOGE("Parameters %s contains an empty key", cparams);
575            return BAD_VALUE;
576        }
577        const char *value_start = equal_pos + 1;
578        const char *semicolon_pos = strchr(value_start, ';');
579        String8 value;
580        if (semicolon_pos == NULL) {
581            value.setTo(value_start);
582        } else {
583            value.setTo(value_start, semicolon_pos - value_start);
584        }
585        if (setParameter(key, value) != OK) {
586            return BAD_VALUE;
587        }
588        if (semicolon_pos == NULL) {
589            break;  // Reaches the end
590        }
591        key_start = semicolon_pos + 1;
592    }
593    return OK;
594}
595
596status_t StagefrightRecorder::setListener(const sp<IMediaRecorderClient> &listener) {
597    mListener = listener;
598
599    return OK;
600}
601
602status_t StagefrightRecorder::prepare() {
603    return OK;
604}
605
606status_t StagefrightRecorder::start() {
607    CHECK(mOutputFd >= 0);
608
609    if (mWriter != NULL) {
610        LOGE("File writer is not avaialble");
611        return UNKNOWN_ERROR;
612    }
613
614    switch (mOutputFormat) {
615        case OUTPUT_FORMAT_DEFAULT:
616        case OUTPUT_FORMAT_THREE_GPP:
617        case OUTPUT_FORMAT_MPEG_4:
618            return startMPEG4Recording();
619
620        case OUTPUT_FORMAT_AMR_NB:
621        case OUTPUT_FORMAT_AMR_WB:
622            return startAMRRecording();
623
624        case OUTPUT_FORMAT_AAC_ADIF:
625        case OUTPUT_FORMAT_AAC_ADTS:
626            return startAACRecording();
627
628        case OUTPUT_FORMAT_RTP_AVP:
629            return startRTPRecording();
630
631        default:
632            LOGE("Unsupported output file format: %d", mOutputFormat);
633            return UNKNOWN_ERROR;
634    }
635}
636
637sp<MediaSource> StagefrightRecorder::createAudioSource() {
638    sp<AudioSource> audioSource =
639        new AudioSource(
640                mAudioSource,
641                mSampleRate,
642                mAudioChannels);
643
644    status_t err = audioSource->initCheck();
645
646    if (err != OK) {
647        LOGE("audio source is not initialized");
648        return NULL;
649    }
650
651    sp<MetaData> encMeta = new MetaData;
652    const char *mime;
653    switch (mAudioEncoder) {
654        case AUDIO_ENCODER_AMR_NB:
655        case AUDIO_ENCODER_DEFAULT:
656            mime = MEDIA_MIMETYPE_AUDIO_AMR_NB;
657            break;
658        case AUDIO_ENCODER_AMR_WB:
659            mime = MEDIA_MIMETYPE_AUDIO_AMR_WB;
660            break;
661        case AUDIO_ENCODER_AAC:
662            mime = MEDIA_MIMETYPE_AUDIO_AAC;
663            break;
664        default:
665            LOGE("Unknown audio encoder: %d", mAudioEncoder);
666            return NULL;
667    }
668    encMeta->setCString(kKeyMIMEType, mime);
669
670    int32_t maxInputSize;
671    CHECK(audioSource->getFormat()->findInt32(
672                kKeyMaxInputSize, &maxInputSize));
673
674    encMeta->setInt32(kKeyMaxInputSize, maxInputSize);
675    encMeta->setInt32(kKeyChannelCount, mAudioChannels);
676    encMeta->setInt32(kKeySampleRate, mSampleRate);
677    encMeta->setInt32(kKeyBitRate, mAudioBitRate);
678    if (mAudioTimeScale > 0) {
679        encMeta->setInt32(kKeyTimeScale, mAudioTimeScale);
680    }
681
682    OMXClient client;
683    CHECK_EQ(client.connect(), OK);
684
685    sp<MediaSource> audioEncoder =
686        OMXCodec::Create(client.interface(), encMeta,
687                         true /* createEncoder */, audioSource);
688    mAudioSourceNode = audioSource;
689
690    return audioEncoder;
691}
692
693status_t StagefrightRecorder::startAACRecording() {
694    CHECK(mOutputFormat == OUTPUT_FORMAT_AAC_ADIF ||
695          mOutputFormat == OUTPUT_FORMAT_AAC_ADTS);
696
697    CHECK(mAudioEncoder == AUDIO_ENCODER_AAC);
698    CHECK(mAudioSource != AUDIO_SOURCE_LIST_END);
699
700    CHECK(0 == "AACWriter is not implemented yet");
701
702    return OK;
703}
704
705status_t StagefrightRecorder::startAMRRecording() {
706    CHECK(mOutputFormat == OUTPUT_FORMAT_AMR_NB ||
707          mOutputFormat == OUTPUT_FORMAT_AMR_WB);
708
709    if (mOutputFormat == OUTPUT_FORMAT_AMR_NB) {
710        if (mAudioEncoder != AUDIO_ENCODER_DEFAULT &&
711            mAudioEncoder != AUDIO_ENCODER_AMR_NB) {
712            LOGE("Invalid encoder %d used for AMRNB recording",
713                    mAudioEncoder);
714            return BAD_VALUE;
715        }
716        if (mSampleRate != 8000) {
717            LOGE("Invalid sampling rate %d used for AMRNB recording",
718                    mSampleRate);
719            return BAD_VALUE;
720        }
721    } else {  // mOutputFormat must be OUTPUT_FORMAT_AMR_WB
722        if (mAudioEncoder != AUDIO_ENCODER_AMR_WB) {
723            LOGE("Invlaid encoder %d used for AMRWB recording",
724                    mAudioEncoder);
725            return BAD_VALUE;
726        }
727        if (mSampleRate != 16000) {
728            LOGE("Invalid sample rate %d used for AMRWB recording",
729                    mSampleRate);
730            return BAD_VALUE;
731        }
732    }
733    if (mAudioChannels != 1) {
734        LOGE("Invalid number of audio channels %d used for amr recording",
735                mAudioChannels);
736        return BAD_VALUE;
737    }
738
739    if (mAudioSource >= AUDIO_SOURCE_LIST_END) {
740        LOGE("Invalid audio source: %d", mAudioSource);
741        return BAD_VALUE;
742    }
743
744    sp<MediaSource> audioEncoder = createAudioSource();
745
746    if (audioEncoder == NULL) {
747        return UNKNOWN_ERROR;
748    }
749
750    mWriter = new AMRWriter(dup(mOutputFd));
751    mWriter->addSource(audioEncoder);
752
753    if (mMaxFileDurationUs != 0) {
754        mWriter->setMaxFileDuration(mMaxFileDurationUs);
755    }
756    if (mMaxFileSizeBytes != 0) {
757        mWriter->setMaxFileSize(mMaxFileSizeBytes);
758    }
759    mWriter->setListener(mListener);
760    mWriter->start();
761
762    return OK;
763}
764
765status_t StagefrightRecorder::startRTPRecording() {
766    CHECK_EQ(mOutputFormat, OUTPUT_FORMAT_RTP_AVP);
767
768    if ((mAudioSource != AUDIO_SOURCE_LIST_END
769                && mVideoSource != VIDEO_SOURCE_LIST_END)
770            || (mAudioSource == AUDIO_SOURCE_LIST_END
771                && mVideoSource == VIDEO_SOURCE_LIST_END)) {
772        // Must have exactly one source.
773        return BAD_VALUE;
774    }
775
776    if (mOutputFd < 0) {
777        return BAD_VALUE;
778    }
779
780    sp<MediaSource> source;
781
782    if (mAudioSource != AUDIO_SOURCE_LIST_END) {
783        source = createAudioSource();
784    } else {
785        status_t err = setupVideoEncoder(&source);
786        if (err != OK) {
787            return err;
788        }
789    }
790
791    mWriter = new ARTPWriter(dup(mOutputFd));
792    mWriter->addSource(source);
793    mWriter->setListener(mListener);
794
795    return mWriter->start();
796}
797
798void StagefrightRecorder::clipVideoFrameRate() {
799    LOGV("clipVideoFrameRate: encoder %d", mVideoEncoder);
800    int minFrameRate = mEncoderProfiles->getVideoEncoderParamByName(
801                        "enc.vid.fps.min", mVideoEncoder);
802    int maxFrameRate = mEncoderProfiles->getVideoEncoderParamByName(
803                        "enc.vid.fps.max", mVideoEncoder);
804    if (mFrameRate < minFrameRate) {
805        LOGW("Intended video encoding frame rate (%d fps) is too small"
806             " and will be set to (%d fps)", mFrameRate, minFrameRate);
807        mFrameRate = minFrameRate;
808    } else if (mFrameRate > maxFrameRate) {
809        LOGW("Intended video encoding frame rate (%d fps) is too large"
810             " and will be set to (%d fps)", mFrameRate, maxFrameRate);
811        mFrameRate = maxFrameRate;
812    }
813}
814
815void StagefrightRecorder::clipVideoBitRate() {
816    LOGV("clipVideoBitRate: encoder %d", mVideoEncoder);
817    int minBitRate = mEncoderProfiles->getVideoEncoderParamByName(
818                        "enc.vid.bps.min", mVideoEncoder);
819    int maxBitRate = mEncoderProfiles->getVideoEncoderParamByName(
820                        "enc.vid.bps.max", mVideoEncoder);
821    if (mVideoBitRate < minBitRate) {
822        LOGW("Intended video encoding bit rate (%d bps) is too small"
823             " and will be set to (%d bps)", mVideoBitRate, minBitRate);
824        mVideoBitRate = minBitRate;
825    } else if (mVideoBitRate > maxBitRate) {
826        LOGW("Intended video encoding bit rate (%d bps) is too large"
827             " and will be set to (%d bps)", mVideoBitRate, maxBitRate);
828        mVideoBitRate = maxBitRate;
829    }
830}
831
832void StagefrightRecorder::clipVideoFrameWidth() {
833    LOGV("clipVideoFrameWidth: encoder %d", mVideoEncoder);
834    int minFrameWidth = mEncoderProfiles->getVideoEncoderParamByName(
835                        "enc.vid.width.min", mVideoEncoder);
836    int maxFrameWidth = mEncoderProfiles->getVideoEncoderParamByName(
837                        "enc.vid.width.max", mVideoEncoder);
838    if (mVideoWidth < minFrameWidth) {
839        LOGW("Intended video encoding frame width (%d) is too small"
840             " and will be set to (%d)", mVideoWidth, minFrameWidth);
841        mVideoWidth = minFrameWidth;
842    } else if (mVideoWidth > maxFrameWidth) {
843        LOGW("Intended video encoding frame width (%d) is too large"
844             " and will be set to (%d)", mVideoWidth, maxFrameWidth);
845        mVideoWidth = maxFrameWidth;
846    }
847}
848
849status_t StagefrightRecorder::setupCameraSource() {
850    clipVideoBitRate();
851    clipVideoFrameRate();
852    clipVideoFrameWidth();
853    clipVideoFrameHeight();
854
855    int64_t token = IPCThreadState::self()->clearCallingIdentity();
856    if (mCamera == 0) {
857        mCamera = Camera::connect(mCameraId);
858        if (mCamera == 0) {
859            LOGE("Camera connection could not be established.");
860            return -EBUSY;
861        }
862        mFlags &= ~FLAGS_HOT_CAMERA;
863        mCamera->lock();
864    }
865
866    // Set the actual video recording frame size
867    CameraParameters params(mCamera->getParameters());
868    params.setPreviewSize(mVideoWidth, mVideoHeight);
869    params.setPreviewFrameRate(mFrameRate);
870    String8 s = params.flatten();
871    if (OK != mCamera->setParameters(s)) {
872        LOGE("Could not change settings."
873             " Someone else is using camera %d?", mCameraId);
874        return -EBUSY;
875    }
876    CameraParameters newCameraParams(mCamera->getParameters());
877
878    // Check on video frame size
879    int frameWidth = 0, frameHeight = 0;
880    newCameraParams.getPreviewSize(&frameWidth, &frameHeight);
881    if (frameWidth  < 0 || frameWidth  != mVideoWidth ||
882        frameHeight < 0 || frameHeight != mVideoHeight) {
883        LOGE("Failed to set the video frame size to %dx%d",
884                mVideoWidth, mVideoHeight);
885        IPCThreadState::self()->restoreCallingIdentity(token);
886        return UNKNOWN_ERROR;
887    }
888
889    // Check on video frame rate
890    int frameRate = newCameraParams.getPreviewFrameRate();
891    if (frameRate < 0 || (frameRate - mFrameRate) != 0) {
892        LOGE("Failed to set frame rate to %d fps. The actual "
893             "frame rate is %d", mFrameRate, frameRate);
894    }
895
896    // This CHECK is good, since we just passed the lock/unlock
897    // check earlier by calling mCamera->setParameters().
898    CHECK_EQ(OK, mCamera->setPreviewDisplay(mPreviewSurface));
899    IPCThreadState::self()->restoreCallingIdentity(token);
900    return OK;
901}
902
903void StagefrightRecorder::clipVideoFrameHeight() {
904    LOGV("clipVideoFrameHeight: encoder %d", mVideoEncoder);
905    int minFrameHeight = mEncoderProfiles->getVideoEncoderParamByName(
906                        "enc.vid.height.min", mVideoEncoder);
907    int maxFrameHeight = mEncoderProfiles->getVideoEncoderParamByName(
908                        "enc.vid.height.max", mVideoEncoder);
909    if (mVideoHeight < minFrameHeight) {
910        LOGW("Intended video encoding frame height (%d) is too small"
911             " and will be set to (%d)", mVideoHeight, minFrameHeight);
912        mVideoHeight = minFrameHeight;
913    } else if (mVideoHeight > maxFrameHeight) {
914        LOGW("Intended video encoding frame height (%d) is too large"
915             " and will be set to (%d)", mVideoHeight, maxFrameHeight);
916        mVideoHeight = maxFrameHeight;
917    }
918}
919
920status_t StagefrightRecorder::setupVideoEncoder(sp<MediaSource> *source) {
921    source->clear();
922
923    status_t err = setupCameraSource();
924    if (err != OK) return err;
925
926    sp<CameraSource> cameraSource = CameraSource::CreateFromCamera(mCamera);
927    CHECK(cameraSource != NULL);
928
929    sp<MetaData> enc_meta = new MetaData;
930    enc_meta->setInt32(kKeyBitRate, mVideoBitRate);
931    enc_meta->setInt32(kKeySampleRate, mFrameRate);
932
933    switch (mVideoEncoder) {
934        case VIDEO_ENCODER_H263:
935            enc_meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_VIDEO_H263);
936            break;
937
938        case VIDEO_ENCODER_MPEG_4_SP:
939            enc_meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_VIDEO_MPEG4);
940            break;
941
942        case VIDEO_ENCODER_H264:
943            enc_meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_VIDEO_AVC);
944            break;
945
946        default:
947            CHECK(!"Should not be here, unsupported video encoding.");
948            break;
949    }
950
951    sp<MetaData> meta = cameraSource->getFormat();
952
953    int32_t width, height, stride, sliceHeight, colorFormat;
954    CHECK(meta->findInt32(kKeyWidth, &width));
955    CHECK(meta->findInt32(kKeyHeight, &height));
956    CHECK(meta->findInt32(kKeyStride, &stride));
957    CHECK(meta->findInt32(kKeySliceHeight, &sliceHeight));
958    CHECK(meta->findInt32(kKeyColorFormat, &colorFormat));
959
960    enc_meta->setInt32(kKeyWidth, width);
961    enc_meta->setInt32(kKeyHeight, height);
962    enc_meta->setInt32(kKeyIFramesInterval, mIFramesIntervalSec);
963    enc_meta->setInt32(kKeyStride, stride);
964    enc_meta->setInt32(kKeySliceHeight, sliceHeight);
965    enc_meta->setInt32(kKeyColorFormat, colorFormat);
966    if (mVideoTimeScale > 0) {
967        enc_meta->setInt32(kKeyTimeScale, mVideoTimeScale);
968    }
969    if (mVideoEncoderProfile != -1) {
970        enc_meta->setInt32(kKeyVideoProfile, mVideoEncoderProfile);
971    }
972    if (mVideoEncoderLevel != -1) {
973        enc_meta->setInt32(kKeyVideoLevel, mVideoEncoderLevel);
974    }
975
976    OMXClient client;
977    CHECK_EQ(client.connect(), OK);
978
979    sp<MediaSource> encoder = OMXCodec::Create(
980            client.interface(), enc_meta,
981            true /* createEncoder */, cameraSource);
982    if (encoder == NULL) {
983        return UNKNOWN_ERROR;
984    }
985
986    *source = encoder;
987
988    return OK;
989}
990
991status_t StagefrightRecorder::setupAudioEncoder(const sp<MediaWriter>& writer) {
992    sp<MediaSource> audioEncoder;
993    switch(mAudioEncoder) {
994        case AUDIO_ENCODER_AMR_NB:
995        case AUDIO_ENCODER_AMR_WB:
996        case AUDIO_ENCODER_AAC:
997            audioEncoder = createAudioSource();
998            break;
999        default:
1000            LOGE("Unsupported audio encoder: %d", mAudioEncoder);
1001            return UNKNOWN_ERROR;
1002    }
1003
1004    if (audioEncoder == NULL) {
1005        return UNKNOWN_ERROR;
1006    }
1007
1008    writer->addSource(audioEncoder);
1009    return OK;
1010}
1011
1012status_t StagefrightRecorder::startMPEG4Recording() {
1013    int32_t totalBitRate = 0;
1014    status_t err = OK;
1015    sp<MediaWriter> writer = new MPEG4Writer(dup(mOutputFd));
1016
1017    // Add audio source first if it exists
1018    if (mAudioSource != AUDIO_SOURCE_LIST_END) {
1019        err = setupAudioEncoder(writer);
1020        if (err != OK) return err;
1021        totalBitRate += mAudioBitRate;
1022    }
1023    if (mVideoSource == VIDEO_SOURCE_DEFAULT
1024            || mVideoSource == VIDEO_SOURCE_CAMERA) {
1025        sp<MediaSource> encoder;
1026        err = setupVideoEncoder(&encoder);
1027        if (err != OK) return err;
1028        writer->addSource(encoder);
1029        totalBitRate += mVideoBitRate;
1030    }
1031
1032    if (mInterleaveDurationUs > 0) {
1033        reinterpret_cast<MPEG4Writer *>(writer.get())->
1034            setInterleaveDuration(mInterleaveDurationUs);
1035    }
1036
1037    if (mMaxFileDurationUs != 0) {
1038        writer->setMaxFileDuration(mMaxFileDurationUs);
1039    }
1040    if (mMaxFileSizeBytes != 0) {
1041        writer->setMaxFileSize(mMaxFileSizeBytes);
1042    }
1043    sp<MetaData> meta = new MetaData;
1044    meta->setInt64(kKeyTime, systemTime() / 1000);
1045    meta->setInt32(kKeyFileType, mOutputFormat);
1046    meta->setInt32(kKeyBitRate, totalBitRate);
1047    meta->setInt32(kKey64BitFileOffset, mUse64BitFileOffset);
1048    if (mMovieTimeScale > 0) {
1049        meta->setInt32(kKeyTimeScale, mMovieTimeScale);
1050    }
1051    if (mTrackEveryTimeDurationUs > 0) {
1052        meta->setInt64(kKeyTrackTimeStatus, mTrackEveryTimeDurationUs);
1053    }
1054    writer->setListener(mListener);
1055    mWriter = writer;
1056    return mWriter->start(meta.get());
1057}
1058
1059status_t StagefrightRecorder::pause() {
1060    LOGV("pause");
1061    if (mWriter == NULL) {
1062        return UNKNOWN_ERROR;
1063    }
1064    mWriter->pause();
1065    return OK;
1066}
1067
1068status_t StagefrightRecorder::stop() {
1069    LOGV("stop");
1070    status_t err = OK;
1071    if (mWriter != NULL) {
1072        err = mWriter->stop();
1073        mWriter.clear();
1074    }
1075
1076    if (mCamera != 0) {
1077        LOGV("Disconnect camera");
1078        int64_t token = IPCThreadState::self()->clearCallingIdentity();
1079        if ((mFlags & FLAGS_HOT_CAMERA) == 0) {
1080            LOGV("Camera was cold when we started, stopping preview");
1081            mCamera->stopPreview();
1082        }
1083        mCamera->unlock();
1084        mCamera.clear();
1085        IPCThreadState::self()->restoreCallingIdentity(token);
1086        mFlags = 0;
1087    }
1088
1089    if (mOutputFd >= 0) {
1090        ::close(mOutputFd);
1091        mOutputFd = -1;
1092    }
1093
1094    return err;
1095}
1096
1097status_t StagefrightRecorder::close() {
1098    LOGV("close");
1099    stop();
1100
1101    return OK;
1102}
1103
1104status_t StagefrightRecorder::reset() {
1105    LOGV("reset");
1106    stop();
1107
1108    // No audio or video source by default
1109    mAudioSource = AUDIO_SOURCE_LIST_END;
1110    mVideoSource = VIDEO_SOURCE_LIST_END;
1111
1112    // Default parameters
1113    mOutputFormat  = OUTPUT_FORMAT_THREE_GPP;
1114    mAudioEncoder  = AUDIO_ENCODER_AMR_NB;
1115    mVideoEncoder  = VIDEO_ENCODER_H263;
1116    mVideoWidth    = 176;
1117    mVideoHeight   = 144;
1118    mFrameRate     = 20;
1119    mVideoBitRate  = 192000;
1120    mSampleRate    = 8000;
1121    mAudioChannels = 1;
1122    mAudioBitRate  = 12200;
1123    mInterleaveDurationUs = 0;
1124    mIFramesIntervalSec = 1;
1125    mAudioSourceNode = 0;
1126    mUse64BitFileOffset = false;
1127    mMovieTimeScale  = -1;
1128    mAudioTimeScale  = -1;
1129    mVideoTimeScale  = -1;
1130    mCameraId        = 0;
1131    mVideoEncoderProfile = -1;
1132    mVideoEncoderLevel   = -1;
1133    mMaxFileDurationUs = 0;
1134    mMaxFileSizeBytes = 0;
1135    mTrackEveryTimeDurationUs = 0;
1136    mEncoderProfiles = MediaProfiles::getInstance();
1137
1138    mOutputFd = -1;
1139    mFlags = 0;
1140
1141    return OK;
1142}
1143
1144status_t StagefrightRecorder::getMaxAmplitude(int *max) {
1145    LOGV("getMaxAmplitude");
1146
1147    if (max == NULL) {
1148        LOGE("Null pointer argument");
1149        return BAD_VALUE;
1150    }
1151
1152    if (mAudioSourceNode != 0) {
1153        *max = mAudioSourceNode->getMaxAmplitude();
1154    } else {
1155        *max = 0;
1156    }
1157
1158    return OK;
1159}
1160
1161status_t StagefrightRecorder::dump(int fd, const Vector<String16>& args) const {
1162    const size_t SIZE = 256;
1163    char buffer[SIZE];
1164    String8 result;
1165    snprintf(buffer, SIZE, "   Recorder: %p", this);
1166    snprintf(buffer, SIZE, "   Output file (fd %d):\n", mOutputFd);
1167    result.append(buffer);
1168    snprintf(buffer, SIZE, "     File format: %d\n", mOutputFormat);
1169    result.append(buffer);
1170    snprintf(buffer, SIZE, "     Max file size (bytes): %lld\n", mMaxFileSizeBytes);
1171    result.append(buffer);
1172    snprintf(buffer, SIZE, "     Max file duration (us): %lld\n", mMaxFileDurationUs);
1173    result.append(buffer);
1174    snprintf(buffer, SIZE, "     File offset length (bits): %d\n", mUse64BitFileOffset? 64: 32);
1175    result.append(buffer);
1176    snprintf(buffer, SIZE, "     Interleave duration (us): %d\n", mInterleaveDurationUs);
1177    result.append(buffer);
1178    snprintf(buffer, SIZE, "     Progress notification: %lld us\n", mTrackEveryTimeDurationUs);
1179    result.append(buffer);
1180    snprintf(buffer, SIZE, "   Audio\n");
1181    result.append(buffer);
1182    snprintf(buffer, SIZE, "     Source: %d\n", mAudioSource);
1183    result.append(buffer);
1184    snprintf(buffer, SIZE, "     Encoder: %d\n", mAudioEncoder);
1185    result.append(buffer);
1186    snprintf(buffer, SIZE, "     Bit rate (bps): %d\n", mAudioBitRate);
1187    result.append(buffer);
1188    snprintf(buffer, SIZE, "     Sampling rate (hz): %d\n", mSampleRate);
1189    result.append(buffer);
1190    snprintf(buffer, SIZE, "     Number of channels: %d\n", mAudioChannels);
1191    result.append(buffer);
1192    snprintf(buffer, SIZE, "     Max amplitude: %d\n", mAudioSourceNode == 0? 0: mAudioSourceNode->getMaxAmplitude());
1193    result.append(buffer);
1194    snprintf(buffer, SIZE, "   Video\n");
1195    result.append(buffer);
1196    snprintf(buffer, SIZE, "     Source: %d\n", mVideoSource);
1197    result.append(buffer);
1198    snprintf(buffer, SIZE, "     Camera Id: %d\n", mCameraId);
1199    result.append(buffer);
1200    snprintf(buffer, SIZE, "     Camera flags: %d\n", mFlags);
1201    result.append(buffer);
1202    snprintf(buffer, SIZE, "     Encoder: %d\n", mVideoEncoder);
1203    result.append(buffer);
1204    snprintf(buffer, SIZE, "     Encoder profile: %d\n", mVideoEncoderProfile);
1205    result.append(buffer);
1206    snprintf(buffer, SIZE, "     Encoder level: %d\n", mVideoEncoderLevel);
1207    result.append(buffer);
1208    snprintf(buffer, SIZE, "     I frames interval (s): %d\n", mIFramesIntervalSec);
1209    result.append(buffer);
1210    snprintf(buffer, SIZE, "     Frame size (pixels): %dx%d\n", mVideoWidth, mVideoHeight);
1211    result.append(buffer);
1212    snprintf(buffer, SIZE, "     Frame rate (fps): %d\n", mFrameRate);
1213    result.append(buffer);
1214    snprintf(buffer, SIZE, "     Bit rate (bps): %d\n", mVideoBitRate);
1215    result.append(buffer);
1216    ::write(fd, result.string(), result.size());
1217    return OK;
1218}
1219}  // namespace android
1220