StagefrightRecorder.cpp revision faed5cd124a54b8db3429f4c26b3220bbec4c8bb 
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 seconds <  0, only the first frame is I frame, and rest are all P frames
385// If seconds == 0, all frames are encoded as I frames. No P frames
386// If seconds >  0, it is the time spacing (seconds) between 2 neighboring I frames
387status_t StagefrightRecorder::setParamVideoIFramesInterval(int32_t seconds) {
388    LOGV("setParamVideoIFramesInterval: %d seconds", seconds);
389    mIFramesIntervalSec = seconds;
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::setParamTrackTimeStatus(int64_t timeDurationUs) {
410    LOGV("setParamTrackTimeStatus: %lld", timeDurationUs);
411    if (timeDurationUs < 20000) {  // Infeasible if shorter than 20 ms?
412        LOGE("Tracking time duration too short: %lld us", timeDurationUs);
413        return BAD_VALUE;
414    }
415    mTrackEveryTimeDurationUs = timeDurationUs;
416    return OK;
417}
418
419status_t StagefrightRecorder::setParamVideoEncoderProfile(int32_t profile) {
420    LOGV("setParamVideoEncoderProfile: %d", profile);
421
422    // Additional check will be done later when we load the encoder.
423    // For now, we are accepting values defined in OpenMAX IL.
424    mVideoEncoderProfile = profile;
425    return OK;
426}
427
428status_t StagefrightRecorder::setParamVideoEncoderLevel(int32_t level) {
429    LOGV("setParamVideoEncoderLevel: %d", level);
430
431    // Additional check will be done later when we load the encoder.
432    // For now, we are accepting values defined in OpenMAX IL.
433    mVideoEncoderLevel = level;
434    return OK;
435}
436
437status_t StagefrightRecorder::setParamMovieTimeScale(int32_t timeScale) {
438    LOGV("setParamMovieTimeScale: %d", timeScale);
439
440    // The range is set to be the same as the audio's time scale range
441    // since audio's time scale has a wider range.
442    if (timeScale < 600 || timeScale > 96000) {
443        LOGE("Time scale (%d) for movie is out of range [600, 96000]", timeScale);
444        return BAD_VALUE;
445    }
446    mMovieTimeScale = timeScale;
447    return OK;
448}
449
450status_t StagefrightRecorder::setParamVideoTimeScale(int32_t timeScale) {
451    LOGV("setParamVideoTimeScale: %d", timeScale);
452
453    // 60000 is chosen to make sure that each video frame from a 60-fps
454    // video has 1000 ticks.
455    if (timeScale < 600 || timeScale > 60000) {
456        LOGE("Time scale (%d) for video is out of range [600, 60000]", timeScale);
457        return BAD_VALUE;
458    }
459    mVideoTimeScale = timeScale;
460    return OK;
461}
462
463status_t StagefrightRecorder::setParamAudioTimeScale(int32_t timeScale) {
464    LOGV("setParamAudioTimeScale: %d", timeScale);
465
466    // 96000 Hz is the highest sampling rate support in AAC.
467    if (timeScale < 600 || timeScale > 96000) {
468        LOGE("Time scale (%d) for audio is out of range [600, 96000]", timeScale);
469        return BAD_VALUE;
470    }
471    mAudioTimeScale = timeScale;
472    return OK;
473}
474
475status_t StagefrightRecorder::setParameter(
476        const String8 &key, const String8 &value) {
477    LOGV("setParameter: key (%s) => value (%s)", key.string(), value.string());
478    if (key == "max-duration") {
479        int64_t max_duration_ms;
480        if (safe_strtoi64(value.string(), &max_duration_ms)) {
481            return setParamMaxFileDurationUs(1000LL * max_duration_ms);
482        }
483    } else if (key == "max-filesize") {
484        int64_t max_filesize_bytes;
485        if (safe_strtoi64(value.string(), &max_filesize_bytes)) {
486            return setParamMaxFileSizeBytes(max_filesize_bytes);
487        }
488    } else if (key == "interleave-duration-us") {
489        int32_t durationUs;
490        if (safe_strtoi32(value.string(), &durationUs)) {
491            return setParamInterleaveDuration(durationUs);
492        }
493    } else if (key == "param-movie-time-scale") {
494        int32_t timeScale;
495        if (safe_strtoi32(value.string(), &timeScale)) {
496            return setParamMovieTimeScale(timeScale);
497        }
498    } else if (key == "param-use-64bit-offset") {
499        int32_t use64BitOffset;
500        if (safe_strtoi32(value.string(), &use64BitOffset)) {
501            return setParam64BitFileOffset(use64BitOffset != 0);
502        }
503    } else if (key == "param-track-time-status") {
504        int64_t timeDurationUs;
505        if (safe_strtoi64(value.string(), &timeDurationUs)) {
506            return setParamTrackTimeStatus(timeDurationUs);
507        }
508    } else if (key == "audio-param-sampling-rate") {
509        int32_t sampling_rate;
510        if (safe_strtoi32(value.string(), &sampling_rate)) {
511            return setParamAudioSamplingRate(sampling_rate);
512        }
513    } else if (key == "audio-param-number-of-channels") {
514        int32_t number_of_channels;
515        if (safe_strtoi32(value.string(), &number_of_channels)) {
516            return setParamAudioNumberOfChannels(number_of_channels);
517        }
518    } else if (key == "audio-param-encoding-bitrate") {
519        int32_t audio_bitrate;
520        if (safe_strtoi32(value.string(), &audio_bitrate)) {
521            return setParamAudioEncodingBitRate(audio_bitrate);
522        }
523    } else if (key == "audio-param-time-scale") {
524        int32_t timeScale;
525        if (safe_strtoi32(value.string(), &timeScale)) {
526            return setParamAudioTimeScale(timeScale);
527        }
528    } else if (key == "video-param-encoding-bitrate") {
529        int32_t video_bitrate;
530        if (safe_strtoi32(value.string(), &video_bitrate)) {
531            return setParamVideoEncodingBitRate(video_bitrate);
532        }
533    } else if (key == "video-param-i-frames-interval") {
534        int32_t seconds;
535        if (safe_strtoi32(value.string(), &seconds)) {
536            return setParamVideoIFramesInterval(seconds);
537        }
538    } else if (key == "video-param-encoder-profile") {
539        int32_t profile;
540        if (safe_strtoi32(value.string(), &profile)) {
541            return setParamVideoEncoderProfile(profile);
542        }
543    } else if (key == "video-param-encoder-level") {
544        int32_t level;
545        if (safe_strtoi32(value.string(), &level)) {
546            return setParamVideoEncoderLevel(level);
547        }
548    } else if (key == "video-param-camera-id") {
549        int32_t cameraId;
550        if (safe_strtoi32(value.string(), &cameraId)) {
551            return setParamVideoCameraId(cameraId);
552        }
553    } else if (key == "video-param-time-scale") {
554        int32_t timeScale;
555        if (safe_strtoi32(value.string(), &timeScale)) {
556            return setParamVideoTimeScale(timeScale);
557        }
558    } else {
559        LOGE("setParameter: failed to find key %s", key.string());
560    }
561    return BAD_VALUE;
562}
563
564status_t StagefrightRecorder::setParameters(const String8 &params) {
565    LOGV("setParameters: %s", params.string());
566    const char *cparams = params.string();
567    const char *key_start = cparams;
568    for (;;) {
569        const char *equal_pos = strchr(key_start, '=');
570        if (equal_pos == NULL) {
571            LOGE("Parameters %s miss a value", cparams);
572            return BAD_VALUE;
573        }
574        String8 key(key_start, equal_pos - key_start);
575        TrimString(&key);
576        if (key.length() == 0) {
577            LOGE("Parameters %s contains an empty key", cparams);
578            return BAD_VALUE;
579        }
580        const char *value_start = equal_pos + 1;
581        const char *semicolon_pos = strchr(value_start, ';');
582        String8 value;
583        if (semicolon_pos == NULL) {
584            value.setTo(value_start);
585        } else {
586            value.setTo(value_start, semicolon_pos - value_start);
587        }
588        if (setParameter(key, value) != OK) {
589            return BAD_VALUE;
590        }
591        if (semicolon_pos == NULL) {
592            break;  // Reaches the end
593        }
594        key_start = semicolon_pos + 1;
595    }
596    return OK;
597}
598
599status_t StagefrightRecorder::setListener(const sp<IMediaRecorderClient> &listener) {
600    mListener = listener;
601
602    return OK;
603}
604
605status_t StagefrightRecorder::prepare() {
606    return OK;
607}
608
609status_t StagefrightRecorder::start() {
610    CHECK(mOutputFd >= 0);
611
612    if (mWriter != NULL) {
613        LOGE("File writer is not avaialble");
614        return UNKNOWN_ERROR;
615    }
616
617    switch (mOutputFormat) {
618        case OUTPUT_FORMAT_DEFAULT:
619        case OUTPUT_FORMAT_THREE_GPP:
620        case OUTPUT_FORMAT_MPEG_4:
621            return startMPEG4Recording();
622
623        case OUTPUT_FORMAT_AMR_NB:
624        case OUTPUT_FORMAT_AMR_WB:
625            return startAMRRecording();
626
627        case OUTPUT_FORMAT_AAC_ADIF:
628        case OUTPUT_FORMAT_AAC_ADTS:
629            return startAACRecording();
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    encMeta->setInt32(kKeyTimeScale, mAudioTimeScale);
679
680    OMXClient client;
681    CHECK_EQ(client.connect(), OK);
682
683    sp<MediaSource> audioEncoder =
684        OMXCodec::Create(client.interface(), encMeta,
685                         true /* createEncoder */, audioSource);
686    mAudioSourceNode = audioSource;
687
688    return audioEncoder;
689}
690
691status_t StagefrightRecorder::startAACRecording() {
692    CHECK(mOutputFormat == OUTPUT_FORMAT_AAC_ADIF ||
693          mOutputFormat == OUTPUT_FORMAT_AAC_ADTS);
694
695    CHECK(mAudioEncoder == AUDIO_ENCODER_AAC);
696    CHECK(mAudioSource != AUDIO_SOURCE_LIST_END);
697
698    CHECK(0 == "AACWriter is not implemented yet");
699
700    return OK;
701}
702
703status_t StagefrightRecorder::startAMRRecording() {
704    CHECK(mOutputFormat == OUTPUT_FORMAT_AMR_NB ||
705          mOutputFormat == OUTPUT_FORMAT_AMR_WB);
706
707    if (mOutputFormat == OUTPUT_FORMAT_AMR_NB) {
708        if (mAudioEncoder != AUDIO_ENCODER_DEFAULT &&
709            mAudioEncoder != AUDIO_ENCODER_AMR_NB) {
710            LOGE("Invalid encoder %d used for AMRNB recording",
711                    mAudioEncoder);
712            return BAD_VALUE;
713        }
714        if (mSampleRate != 8000) {
715            LOGE("Invalid sampling rate %d used for AMRNB recording",
716                    mSampleRate);
717            return BAD_VALUE;
718        }
719    } else {  // mOutputFormat must be OUTPUT_FORMAT_AMR_WB
720        if (mAudioEncoder != AUDIO_ENCODER_AMR_WB) {
721            LOGE("Invlaid encoder %d used for AMRWB recording",
722                    mAudioEncoder);
723            return BAD_VALUE;
724        }
725        if (mSampleRate != 16000) {
726            LOGE("Invalid sample rate %d used for AMRWB recording",
727                    mSampleRate);
728            return BAD_VALUE;
729        }
730    }
731    if (mAudioChannels != 1) {
732        LOGE("Invalid number of audio channels %d used for amr recording",
733                mAudioChannels);
734        return BAD_VALUE;
735    }
736
737    if (mAudioSource >= AUDIO_SOURCE_LIST_END) {
738        LOGE("Invalid audio source: %d", mAudioSource);
739        return BAD_VALUE;
740    }
741
742    sp<MediaSource> audioEncoder = createAudioSource();
743
744    if (audioEncoder == NULL) {
745        return UNKNOWN_ERROR;
746    }
747
748    mWriter = new AMRWriter(dup(mOutputFd));
749    mWriter->addSource(audioEncoder);
750
751    if (mMaxFileDurationUs != 0) {
752        mWriter->setMaxFileDuration(mMaxFileDurationUs);
753    }
754    if (mMaxFileSizeBytes != 0) {
755        mWriter->setMaxFileSize(mMaxFileSizeBytes);
756    }
757    mWriter->setListener(mListener);
758    mWriter->start();
759
760    return OK;
761}
762
763void StagefrightRecorder::clipVideoFrameRate() {
764    LOGV("clipVideoFrameRate: encoder %d", mVideoEncoder);
765    int minFrameRate = mEncoderProfiles->getVideoEncoderParamByName(
766                        "enc.vid.fps.min", mVideoEncoder);
767    int maxFrameRate = mEncoderProfiles->getVideoEncoderParamByName(
768                        "enc.vid.fps.max", mVideoEncoder);
769    if (mFrameRate < minFrameRate) {
770        LOGW("Intended video encoding frame rate (%d fps) is too small"
771             " and will be set to (%d fps)", mFrameRate, minFrameRate);
772        mFrameRate = minFrameRate;
773    } else if (mFrameRate > maxFrameRate) {
774        LOGW("Intended video encoding frame rate (%d fps) is too large"
775             " and will be set to (%d fps)", mFrameRate, maxFrameRate);
776        mFrameRate = maxFrameRate;
777    }
778}
779
780void StagefrightRecorder::clipVideoBitRate() {
781    LOGV("clipVideoBitRate: encoder %d", mVideoEncoder);
782    int minBitRate = mEncoderProfiles->getVideoEncoderParamByName(
783                        "enc.vid.bps.min", mVideoEncoder);
784    int maxBitRate = mEncoderProfiles->getVideoEncoderParamByName(
785                        "enc.vid.bps.max", mVideoEncoder);
786    if (mVideoBitRate < minBitRate) {
787        LOGW("Intended video encoding bit rate (%d bps) is too small"
788             " and will be set to (%d bps)", mVideoBitRate, minBitRate);
789        mVideoBitRate = minBitRate;
790    } else if (mVideoBitRate > maxBitRate) {
791        LOGW("Intended video encoding bit rate (%d bps) is too large"
792             " and will be set to (%d bps)", mVideoBitRate, maxBitRate);
793        mVideoBitRate = maxBitRate;
794    }
795}
796
797void StagefrightRecorder::clipVideoFrameWidth() {
798    LOGV("clipVideoFrameWidth: encoder %d", mVideoEncoder);
799    int minFrameWidth = mEncoderProfiles->getVideoEncoderParamByName(
800                        "enc.vid.width.min", mVideoEncoder);
801    int maxFrameWidth = mEncoderProfiles->getVideoEncoderParamByName(
802                        "enc.vid.width.max", mVideoEncoder);
803    if (mVideoWidth < minFrameWidth) {
804        LOGW("Intended video encoding frame width (%d) is too small"
805             " and will be set to (%d)", mVideoWidth, minFrameWidth);
806        mVideoWidth = minFrameWidth;
807    } else if (mVideoWidth > maxFrameWidth) {
808        LOGW("Intended video encoding frame width (%d) is too large"
809             " and will be set to (%d)", mVideoWidth, maxFrameWidth);
810        mVideoWidth = maxFrameWidth;
811    }
812}
813
814status_t StagefrightRecorder::setupCameraSource() {
815    clipVideoBitRate();
816    clipVideoFrameRate();
817    clipVideoFrameWidth();
818    clipVideoFrameHeight();
819
820    int64_t token = IPCThreadState::self()->clearCallingIdentity();
821    if (mCamera == 0) {
822        mCamera = Camera::connect(mCameraId);
823        if (mCamera == 0) {
824            LOGE("Camera connection could not be established.");
825            return -EBUSY;
826        }
827        mFlags &= ~FLAGS_HOT_CAMERA;
828        mCamera->lock();
829    }
830
831    // Set the actual video recording frame size
832    CameraParameters params(mCamera->getParameters());
833    params.setPreviewSize(mVideoWidth, mVideoHeight);
834    params.setPreviewFrameRate(mFrameRate);
835    String8 s = params.flatten();
836    CHECK_EQ(OK, mCamera->setParameters(s));
837    CameraParameters newCameraParams(mCamera->getParameters());
838
839    // Check on video frame size
840    int frameWidth = 0, frameHeight = 0;
841    newCameraParams.getPreviewSize(&frameWidth, &frameHeight);
842    if (frameWidth  < 0 || frameWidth  != mVideoWidth ||
843        frameHeight < 0 || frameHeight != mVideoHeight) {
844        LOGE("Failed to set the video frame size to %dx%d",
845                mVideoWidth, mVideoHeight);
846        IPCThreadState::self()->restoreCallingIdentity(token);
847        return UNKNOWN_ERROR;
848    }
849
850    // Check on video frame rate
851    int frameRate = newCameraParams.getPreviewFrameRate();
852    if (frameRate < 0 || (frameRate - mFrameRate) != 0) {
853        LOGE("Failed to set frame rate to %d fps. The actual "
854             "frame rate is %d", mFrameRate, frameRate);
855    }
856
857    CHECK_EQ(OK, mCamera->setPreviewDisplay(mPreviewSurface));
858    IPCThreadState::self()->restoreCallingIdentity(token);
859    return OK;
860}
861
862void StagefrightRecorder::clipVideoFrameHeight() {
863    LOGV("clipVideoFrameHeight: encoder %d", mVideoEncoder);
864    int minFrameHeight = mEncoderProfiles->getVideoEncoderParamByName(
865                        "enc.vid.height.min", mVideoEncoder);
866    int maxFrameHeight = mEncoderProfiles->getVideoEncoderParamByName(
867                        "enc.vid.height.max", mVideoEncoder);
868    if (mVideoHeight < minFrameHeight) {
869        LOGW("Intended video encoding frame height (%d) is too small"
870             " and will be set to (%d)", mVideoHeight, minFrameHeight);
871        mVideoHeight = minFrameHeight;
872    } else if (mVideoHeight > maxFrameHeight) {
873        LOGW("Intended video encoding frame height (%d) is too large"
874             " and will be set to (%d)", mVideoHeight, maxFrameHeight);
875        mVideoHeight = maxFrameHeight;
876    }
877}
878
879status_t StagefrightRecorder::setupVideoEncoder(const sp<MediaWriter>& writer) {
880    status_t err = setupCameraSource();
881    if (err != OK) return err;
882
883    sp<CameraSource> cameraSource = CameraSource::CreateFromCamera(mCamera);
884    CHECK(cameraSource != NULL);
885
886    sp<MetaData> enc_meta = new MetaData;
887    enc_meta->setInt32(kKeyBitRate, mVideoBitRate);
888    enc_meta->setInt32(kKeySampleRate, mFrameRate);
889
890    switch (mVideoEncoder) {
891        case VIDEO_ENCODER_H263:
892            enc_meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_VIDEO_H263);
893            break;
894
895        case VIDEO_ENCODER_MPEG_4_SP:
896            enc_meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_VIDEO_MPEG4);
897            break;
898
899        case VIDEO_ENCODER_H264:
900            enc_meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_VIDEO_AVC);
901            break;
902
903        default:
904            CHECK(!"Should not be here, unsupported video encoding.");
905            break;
906    }
907
908    sp<MetaData> meta = cameraSource->getFormat();
909
910    int32_t width, height, stride, sliceHeight, colorFormat;
911    CHECK(meta->findInt32(kKeyWidth, &width));
912    CHECK(meta->findInt32(kKeyHeight, &height));
913    CHECK(meta->findInt32(kKeyStride, &stride));
914    CHECK(meta->findInt32(kKeySliceHeight, &sliceHeight));
915    CHECK(meta->findInt32(kKeyColorFormat, &colorFormat));
916
917    enc_meta->setInt32(kKeyWidth, width);
918    enc_meta->setInt32(kKeyHeight, height);
919    enc_meta->setInt32(kKeyIFramesInterval, mIFramesIntervalSec);
920    enc_meta->setInt32(kKeyStride, stride);
921    enc_meta->setInt32(kKeySliceHeight, sliceHeight);
922    enc_meta->setInt32(kKeyColorFormat, colorFormat);
923    enc_meta->setInt32(kKeyTimeScale, mVideoTimeScale);
924    if (mVideoEncoderProfile != -1) {
925        enc_meta->setInt32(kKeyVideoProfile, mVideoEncoderProfile);
926    }
927    if (mVideoEncoderLevel != -1) {
928        enc_meta->setInt32(kKeyVideoLevel, mVideoEncoderLevel);
929    }
930
931    OMXClient client;
932    CHECK_EQ(client.connect(), OK);
933
934    sp<MediaSource> encoder = OMXCodec::Create(
935            client.interface(), enc_meta,
936            true /* createEncoder */, cameraSource);
937    if (encoder == NULL) {
938        return UNKNOWN_ERROR;
939    }
940
941    writer->addSource(encoder);
942    return OK;
943}
944
945status_t StagefrightRecorder::setupAudioEncoder(const sp<MediaWriter>& writer) {
946    sp<MediaSource> audioEncoder;
947    switch(mAudioEncoder) {
948        case AUDIO_ENCODER_AMR_NB:
949        case AUDIO_ENCODER_AMR_WB:
950        case AUDIO_ENCODER_AAC:
951            audioEncoder = createAudioSource();
952            break;
953        default:
954            LOGE("Unsupported audio encoder: %d", mAudioEncoder);
955            return UNKNOWN_ERROR;
956    }
957
958    if (audioEncoder == NULL) {
959        return UNKNOWN_ERROR;
960    }
961
962    writer->addSource(audioEncoder);
963    return OK;
964}
965
966status_t StagefrightRecorder::startMPEG4Recording() {
967    int32_t totalBitRate = 0;
968    status_t err = OK;
969    sp<MediaWriter> writer = new MPEG4Writer(dup(mOutputFd));
970
971    // Add audio source first if it exists
972    if (mAudioSource != AUDIO_SOURCE_LIST_END) {
973        err = setupAudioEncoder(writer);
974        if (err != OK) return err;
975        totalBitRate += mAudioBitRate;
976    }
977    if (mVideoSource == VIDEO_SOURCE_DEFAULT
978            || mVideoSource == VIDEO_SOURCE_CAMERA) {
979        err = setupVideoEncoder(writer);
980        if (err != OK) return err;
981        totalBitRate += mVideoBitRate;
982    }
983
984    reinterpret_cast<MPEG4Writer *>(writer.get())->
985        setInterleaveDuration(mInterleaveDurationUs);
986
987    if (mMaxFileDurationUs != 0) {
988        writer->setMaxFileDuration(mMaxFileDurationUs);
989    }
990    if (mMaxFileSizeBytes != 0) {
991        writer->setMaxFileSize(mMaxFileSizeBytes);
992    }
993    sp<MetaData> meta = new MetaData;
994    meta->setInt64(kKeyTime, systemTime() / 1000);
995    meta->setInt32(kKeyFileType, mOutputFormat);
996    meta->setInt32(kKeyBitRate, totalBitRate);
997    meta->setInt32(kKey64BitFileOffset, mUse64BitFileOffset);
998    meta->setInt32(kKeyTimeScale, mMovieTimeScale);
999    if (mTrackEveryTimeDurationUs > 0) {
1000        meta->setInt64(kKeyTrackTimeStatus, mTrackEveryTimeDurationUs);
1001    }
1002    writer->setListener(mListener);
1003    mWriter = writer;
1004    return mWriter->start(meta.get());
1005}
1006
1007status_t StagefrightRecorder::pause() {
1008    LOGV("pause");
1009    if (mWriter == NULL) {
1010        return UNKNOWN_ERROR;
1011    }
1012    mWriter->pause();
1013    return OK;
1014}
1015
1016status_t StagefrightRecorder::stop() {
1017    LOGV("stop");
1018    if (mWriter != NULL) {
1019        mWriter->stop();
1020        mWriter.clear();
1021    }
1022
1023    if (mCamera != 0) {
1024        LOGV("Disconnect camera");
1025        int64_t token = IPCThreadState::self()->clearCallingIdentity();
1026        if ((mFlags & FLAGS_HOT_CAMERA) == 0) {
1027            LOGV("Camera was cold when we started, stopping preview");
1028            mCamera->stopPreview();
1029        }
1030        mCamera->unlock();
1031        mCamera.clear();
1032        IPCThreadState::self()->restoreCallingIdentity(token);
1033        mFlags = 0;
1034    }
1035
1036    return OK;
1037}
1038
1039status_t StagefrightRecorder::close() {
1040    LOGV("close");
1041    stop();
1042
1043    return OK;
1044}
1045
1046status_t StagefrightRecorder::reset() {
1047    LOGV("reset");
1048    stop();
1049
1050    // No audio or video source by default
1051    mAudioSource = AUDIO_SOURCE_LIST_END;
1052    mVideoSource = VIDEO_SOURCE_LIST_END;
1053
1054    // Default parameters
1055    mOutputFormat  = OUTPUT_FORMAT_THREE_GPP;
1056    mAudioEncoder  = AUDIO_ENCODER_AMR_NB;
1057    mVideoEncoder  = VIDEO_ENCODER_H263;
1058    mVideoWidth    = 176;
1059    mVideoHeight   = 144;
1060    mFrameRate     = 20;
1061    mVideoBitRate  = 192000;
1062    mSampleRate    = 8000;
1063    mAudioChannels = 1;
1064    mAudioBitRate  = 12200;
1065    mInterleaveDurationUs = 0;
1066    mIFramesIntervalSec = 1;
1067    mAudioSourceNode = 0;
1068    mUse64BitFileOffset = false;
1069    mMovieTimeScale  = 1000;
1070    mAudioTimeScale  = 1000;
1071    mVideoTimeScale  = 1000;
1072    mCameraId        = 0;
1073    mVideoEncoderProfile = -1;
1074    mVideoEncoderLevel   = -1;
1075    mMaxFileDurationUs = 0;
1076    mMaxFileSizeBytes = 0;
1077    mTrackEveryTimeDurationUs = 0;
1078    mEncoderProfiles = MediaProfiles::getInstance();
1079
1080    mOutputFd = -1;
1081    mFlags = 0;
1082
1083    return OK;
1084}
1085
1086status_t StagefrightRecorder::getMaxAmplitude(int *max) {
1087    LOGV("getMaxAmplitude");
1088
1089    if (max == NULL) {
1090        LOGE("Null pointer argument");
1091        return BAD_VALUE;
1092    }
1093
1094    if (mAudioSourceNode != 0) {
1095        *max = mAudioSourceNode->getMaxAmplitude();
1096    } else {
1097        *max = 0;
1098    }
1099
1100    return OK;
1101}
1102
1103status_t StagefrightRecorder::dump(int fd, const Vector<String16>& args) const {
1104    const size_t SIZE = 256;
1105    char buffer[SIZE];
1106    String8 result;
1107    snprintf(buffer, SIZE, "   Recorder: %p", this);
1108    snprintf(buffer, SIZE, "   Output file (fd %d):\n", mOutputFd);
1109    result.append(buffer);
1110    snprintf(buffer, SIZE, "     File format: %d\n", mOutputFormat);
1111    result.append(buffer);
1112    snprintf(buffer, SIZE, "     Max file size (bytes): %lld\n", mMaxFileSizeBytes);
1113    result.append(buffer);
1114    snprintf(buffer, SIZE, "     Max file duration (us): %lld\n", mMaxFileDurationUs);
1115    result.append(buffer);
1116    snprintf(buffer, SIZE, "     File offset length (bits): %d\n", mUse64BitFileOffset? 64: 32);
1117    result.append(buffer);
1118    snprintf(buffer, SIZE, "     Interleave duration (us): %d\n", mInterleaveDurationUs);
1119    result.append(buffer);
1120    snprintf(buffer, SIZE, "     Progress notification: %lld us\n", mTrackEveryTimeDurationUs);
1121    result.append(buffer);
1122    snprintf(buffer, SIZE, "   Audio\n");
1123    result.append(buffer);
1124    snprintf(buffer, SIZE, "     Source: %d\n", mAudioSource);
1125    result.append(buffer);
1126    snprintf(buffer, SIZE, "     Encoder: %d\n", mAudioEncoder);
1127    result.append(buffer);
1128    snprintf(buffer, SIZE, "     Bit rate (bps): %d\n", mAudioBitRate);
1129    result.append(buffer);
1130    snprintf(buffer, SIZE, "     Sampling rate (hz): %d\n", mSampleRate);
1131    result.append(buffer);
1132    snprintf(buffer, SIZE, "     Number of channels: %d\n", mAudioChannels);
1133    result.append(buffer);
1134    snprintf(buffer, SIZE, "     Max amplitude: %d\n", mAudioSourceNode == 0? 0: mAudioSourceNode->getMaxAmplitude());
1135    result.append(buffer);
1136    snprintf(buffer, SIZE, "   Video\n");
1137    result.append(buffer);
1138    snprintf(buffer, SIZE, "     Source: %d\n", mVideoSource);
1139    result.append(buffer);
1140    snprintf(buffer, SIZE, "     Camera Id: %d\n", mCameraId);
1141    result.append(buffer);
1142    snprintf(buffer, SIZE, "     Camera flags: %d\n", mFlags);
1143    result.append(buffer);
1144    snprintf(buffer, SIZE, "     Encoder: %d\n", mVideoEncoder);
1145    result.append(buffer);
1146    snprintf(buffer, SIZE, "     Encoder profile: %d\n", mVideoEncoderProfile);
1147    result.append(buffer);
1148    snprintf(buffer, SIZE, "     Encoder level: %d\n", mVideoEncoderLevel);
1149    result.append(buffer);
1150    snprintf(buffer, SIZE, "     I frames interval (s): %d\n", mIFramesIntervalSec);
1151    result.append(buffer);
1152    snprintf(buffer, SIZE, "     Frame size (pixels): %dx%d\n", mVideoWidth, mVideoHeight);
1153    result.append(buffer);
1154    snprintf(buffer, SIZE, "     Frame rate (fps): %d\n", mFrameRate);
1155    result.append(buffer);
1156    snprintf(buffer, SIZE, "     Bit rate (bps): %d\n", mVideoBitRate);
1157    result.append(buffer);
1158    ::write(fd, result.string(), result.size());
1159    return OK;
1160}
1161}  // namespace android
1162