2 * Copyright 2012 Michael Chen <omxcodec@gmail.com>
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
18 #define LOG_TAG "FFmpegExtractor"
19 #include <utils/Log.h>
21 #include <limits.h> /* INT_MAX */
23 #include <media/stagefright/foundation/ABitReader.h>
24 #include <media/stagefright/foundation/ABuffer.h>
25 #include <media/stagefright/foundation/ADebug.h>
26 #include <media/stagefright/foundation/AMessage.h>
27 #include <media/stagefright/foundation/hexdump.h>
28 #include <media/stagefright/DataSource.h>
29 #include <media/stagefright/MediaBuffer.h>
30 #include <media/stagefright/MediaDebug.h>
31 #include <media/stagefright/MediaDefs.h>
32 #include <media/stagefright/MediaErrors.h>
33 #include <media/stagefright/MediaSource.h>
34 #include <media/stagefright/MetaData.h>
35 #include <media/stagefright/Utils.h>
36 #include <utils/String8.h>
37 #include <utils/misc.h>
39 #include "include/avc_utils.h"
40 #include "utils/common_utils.h"
41 #include "utils/ffmpeg_utils.h"
42 #include "FFmpegExtractor.h"
44 #define DEBUG_READ_ENTRY 0
45 #define DIABLE_VIDEO 0
46 #define DIABLE_AUDIO 0
47 #define WAIT_KEY_PACKET_AFTER_SEEK 1
48 #define DISABLE_NAL_TO_ANNEXB 0
50 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
51 #define MIN_AUDIOQ_SIZE (20 * 16 * 1024)
53 #define EXTRACTOR_MAX_PROBE_PACKETS 200
55 #define FF_MAX_EXTRADATA_SIZE ((1 << 28) - FF_INPUT_BUFFER_PADDING_SIZE)
62 static AVPacket flush_pkt;
66 struct FFmpegExtractor::Track : public MediaSource {
67 Track(const sp<FFmpegExtractor> &extractor, sp<MetaData> meta, bool isAVC,
68 AVStream *stream, PacketQueue *queue);
70 virtual status_t start(MetaData *params);
71 virtual status_t stop();
72 virtual sp<MetaData> getFormat();
74 virtual status_t read(
75 MediaBuffer **buffer, const ReadOptions *options);
81 friend struct FFmpegExtractor;
83 sp<FFmpegExtractor> mExtractor;
86 enum AVMediaType mMediaType;
91 size_t mNALLengthSize;
97 DISALLOW_EVIL_CONSTRUCTORS(Track);
100 ////////////////////////////////////////////////////////////////////////////////
102 FFmpegExtractor::FFmpegExtractor(const sp<DataSource> &source)
103 : mDataSource(source),
104 mReaderThreadStarted(false),
105 mInitCheck(NO_INIT) {
106 LOGV("FFmpegExtractor::FFmpegExtractor");
109 const char *url = mDataSource->getNamURI();
111 LOGI("url is error!");
115 if (!strcmp(url, "-")) {
116 av_strlcpy(mFilename, "pipe:", strlen("pipe:") + 1);
118 av_strlcpy(mFilename, url, strlen(url) + 1);
120 LOGI("url: %s, mFilename: %s", url, mFilename);
124 LOGE("failed to init ffmpeg");
128 // start reader here, as we want to extract extradata from bitstream if no extradata
131 while(mProbePkts <= EXTRACTOR_MAX_PROBE_PACKETS && !mEOF &&
132 (mFormatCtx->pb ? !mFormatCtx->pb->error : 1) &&
133 (mDefersToCreateVideoTrack || mDefersToCreateAudioTrack)) {
134 // FIXME, i am so lazy! Should use pthread_cond_wait to wait conditions
138 LOGV("mProbePkts: %d, mEOF: %d, pb->error(if has): %d, mDefersToCreateVideoTrack: %d, mDefersToCreateAudioTrack: %d",
139 mProbePkts, mEOF, mFormatCtx->pb ? mFormatCtx->pb->error : 0, mDefersToCreateVideoTrack, mDefersToCreateAudioTrack);
144 FFmpegExtractor::~FFmpegExtractor() {
145 LOGV("FFmpegExtractor::~FFmpegExtractor");
147 // stop reader here if no track!
153 size_t FFmpegExtractor::countTracks() {
154 return mInitCheck == OK ? mTracks.size() : 0;
157 sp<MediaSource> FFmpegExtractor::getTrack(size_t index) {
158 LOGV("FFmpegExtractor::getTrack[%d]", index);
160 if (mInitCheck != OK) {
164 if (index >= mTracks.size()) {
168 return mTracks.valueAt(index);
171 sp<MetaData> FFmpegExtractor::getTrackMetaData(size_t index, uint32_t flags) {
172 LOGV("FFmpegExtractor::getTrackMetaData[%d]", index);
174 if (mInitCheck != OK) {
178 if (index >= mTracks.size()) {
182 return mTracks.valueAt(index)->getFormat();
185 sp<MetaData> FFmpegExtractor::getMetaData() {
186 LOGV("FFmpegExtractor::getMetaData");
188 if (mInitCheck != OK) {
192 sp<MetaData> meta = new MetaData;
194 meta->setCString(kKeyMIMEType, "video/ffmpeg");
199 uint32_t FFmpegExtractor::flags() const {
200 LOGV("FFmpegExtractor::flags");
202 if (mInitCheck != OK) {
206 uint32_t flags = CAN_PAUSE;
208 if (mFormatCtx->duration != AV_NOPTS_VALUE) {
209 flags |= CAN_SEEK_BACKWARD | CAN_SEEK_FORWARD | CAN_SEEK;
215 void FFmpegExtractor::packet_queue_init(PacketQueue *q)
217 memset(q, 0, sizeof(PacketQueue));
218 pthread_mutex_init(&q->mutex, NULL);
219 pthread_cond_init(&q->cond, NULL);
220 packet_queue_put(q, &flush_pkt);
223 void FFmpegExtractor::packet_queue_flush(PacketQueue *q)
225 AVPacketList *pkt, *pkt1;
227 pthread_mutex_lock(&q->mutex);
228 for (pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
230 av_free_packet(&pkt->pkt);
237 pthread_mutex_unlock(&q->mutex);
240 void FFmpegExtractor::packet_queue_end(PacketQueue *q)
242 packet_queue_flush(q);
245 void FFmpegExtractor::packet_queue_abort(PacketQueue *q)
247 pthread_mutex_lock(&q->mutex);
249 q->abort_request = 1;
251 pthread_cond_signal(&q->cond);
253 pthread_mutex_unlock(&q->mutex);
256 int FFmpegExtractor::packet_queue_put(PacketQueue *q, AVPacket *pkt)
260 /* duplicate the packet */
261 if (pkt != &flush_pkt && av_dup_packet(pkt) < 0)
264 pkt1 = (AVPacketList *)av_malloc(sizeof(AVPacketList));
270 pthread_mutex_lock(&q->mutex);
276 q->last_pkt->next = pkt1;
279 //q->size += pkt1->pkt.size + sizeof(*pkt1);
280 q->size += pkt1->pkt.size;
281 pthread_cond_signal(&q->cond);
283 pthread_mutex_unlock(&q->mutex);
287 /* packet queue handling */
288 /* return < 0 if aborted, 0 if no packet and > 0 if packet. */
289 int FFmpegExtractor::packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
294 pthread_mutex_lock(&q->mutex);
297 if (q->abort_request) {
304 q->first_pkt = pkt1->next;
308 //q->size -= pkt1->pkt.size + sizeof(*pkt1);
309 q->size -= pkt1->pkt.size;
318 pthread_cond_wait(&q->cond, &q->mutex);
321 pthread_mutex_unlock(&q->mutex);
325 static void EncodeSize14(uint8_t **_ptr, size_t size) {
326 CHECK_LE(size, 0x3fff);
328 uint8_t *ptr = *_ptr;
330 *ptr++ = 0x80 | (size >> 7);
331 *ptr++ = size & 0x7f;
336 static sp<ABuffer> MakeMPEGVideoESDS(const sp<ABuffer> &csd) {
337 sp<ABuffer> esds = new ABuffer(csd->size() + 25);
339 uint8_t *ptr = esds->data();
341 EncodeSize14(&ptr, 22 + csd->size());
343 *ptr++ = 0x00; // ES_ID
346 *ptr++ = 0x00; // streamDependenceFlag, URL_Flag, OCRstreamFlag
349 EncodeSize14(&ptr, 16 + csd->size());
351 *ptr++ = 0x40; // Audio ISO/IEC 14496-3
353 for (size_t i = 0; i < 12; ++i) {
358 EncodeSize14(&ptr, csd->size());
360 memcpy(ptr, csd->data(), csd->size());
365 // Returns the sample rate based on the sampling frequency index
366 static uint32_t get_sample_rate(const uint8_t sf_index)
368 static const uint32_t sample_rates[] =
370 96000, 88200, 64000, 48000, 44100, 32000,
371 24000, 22050, 16000, 12000, 11025, 8000
374 if (sf_index < sizeof(sample_rates) / sizeof(sample_rates[0])) {
375 return sample_rates[sf_index];
381 int FFmpegExtractor::check_extradata(AVCodecContext *avctx)
384 bool *defersToCreateTrack;
385 AVBitStreamFilterContext **bsfc;
388 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
390 defersToCreateTrack = &mDefersToCreateVideoTrack;
391 } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO){
393 defersToCreateTrack = &mDefersToCreateAudioTrack;
397 if (avctx->codec_id == CODEC_ID_MP3 ||
398 avctx->codec_id == CODEC_ID_MP1 ||
399 avctx->codec_id == CODEC_ID_MP2 ||
400 avctx->codec_id == CODEC_ID_AC3 ||
401 avctx->codec_id == CODEC_ID_H263 ||
402 avctx->codec_id == CODEC_ID_H263P ||
403 avctx->codec_id == CODEC_ID_H263I ||
404 avctx->codec_id == CODEC_ID_WMV1)
407 // is extradata compatible with android?
408 if (avctx->codec_id != CODEC_ID_AAC) {
409 int is_compatible = is_extradata_compatible_with_android(avctx);
410 if (!is_compatible) {
411 LOGI("%s extradata is not compatible with android, should to extract it from bitstream",
412 av_get_media_type_string(avctx->codec_type));
413 *defersToCreateTrack = true;
414 *bsfc = NULL; // H264 don't need bsfc, only AAC?
420 if (avctx->codec_id == CODEC_ID_AAC) {
421 name = "aac_adtstoasc";
424 if (avctx->extradata_size <= 0) {
425 LOGI("No %s extradata found, should to extract it from bitstream",
426 av_get_media_type_string(avctx->codec_type));
427 *defersToCreateTrack = true;
428 //CHECK(name != NULL);
429 if (!*bsfc && name) {
430 *bsfc = av_bitstream_filter_init(name);
432 LOGE("Cannot open the %s BSF!", name);
433 *defersToCreateTrack = false;
436 LOGV("open the %s bsf", name);
447 int FFmpegExtractor::stream_component_open(int stream_index)
449 AVCodecContext *avctx;
452 bool supported = false;
458 LOGI("stream_index: %d", stream_index);
459 if (stream_index < 0 || stream_index >= mFormatCtx->nb_streams)
461 avctx = mFormatCtx->streams[stream_index]->codec;
463 switch(avctx->codec_id) {
474 case CODEC_ID_MPEG2VIDEO:
481 case CODEC_ID_WMAPRO:
482 case CODEC_ID_WMALOSSLESS:
491 LOGE("unsupport the codec, id: 0x%0x", avctx->codec_id);
494 LOGV("support the codec");
497 ssize_t index = mTracks.indexOfKey(stream_index);
500 LOGE("this track already exists");
504 mFormatCtx->streams[stream_index]->discard = AVDISCARD_DEFAULT;
507 av_get_codec_tag_string(tagbuf, sizeof(tagbuf), avctx->codec_tag);
508 LOGV("Tag %s/0x%08x with codec id '%d'\n", tagbuf, avctx->codec_tag, avctx->codec_id);
510 switch (avctx->codec_type) {
511 case AVMEDIA_TYPE_VIDEO:
512 if (mVideoStreamIdx == -1)
513 mVideoStreamIdx = stream_index;
514 if (mVideoStream == NULL)
515 mVideoStream = mFormatCtx->streams[stream_index];
516 if (!mVideoQInited) {
517 packet_queue_init(&mVideoQ);
518 mVideoQInited = true;
521 ret = check_extradata(avctx);
524 // disable the stream
525 mVideoStreamIdx = -1;
527 packet_queue_end(&mVideoQ);
528 mVideoQInited = false;
529 mFormatCtx->streams[stream_index]->discard = AVDISCARD_ALL;
534 if (avctx->extradata) {
535 LOGV("video stream extradata:");
536 hexdump(avctx->extradata, avctx->extradata_size);
538 LOGV("video stream no extradata, but we can ignore it.");
543 switch(avctx->codec_id) {
547 * http://msdn.microsoft.com/en-us/library/dd757808(v=vs.85).aspx
549 //if (avctx->codec_tag && avctx->codec_tag == AV_RL32("avc1")) {
550 if (avctx->extradata[0] == 1 /* configurationVersion */) {
551 // H.264 bitstream without start codes.
555 if (avctx->width == 0 || avctx->height == 0) {
556 int32_t width, height;
557 sp<ABuffer> seqParamSet = new ABuffer(avctx->extradata_size - 8);
558 memcpy(seqParamSet->data(), avctx->extradata + 8, avctx->extradata_size - 8);
559 FindAVCDimensions(seqParamSet, &width, &height);
560 avctx->width = width;
561 avctx->height = height;
564 meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_VIDEO_AVC);
565 meta->setData(kKeyAVCC, kTypeAVCC, avctx->extradata, avctx->extradata_size);
567 // H.264 bitstream with start codes.
571 /* set NULL to release meta as we will new a meta in MakeAVCCodecSpecificData() fxn */
575 sp<ABuffer> buffer = new ABuffer(avctx->extradata_size);
576 memcpy(buffer->data(), avctx->extradata, avctx->extradata_size);
577 meta = MakeAVCCodecSpecificData(buffer);
582 meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_VIDEO_MPEG4);
584 sp<ABuffer> csd = new ABuffer(avctx->extradata_size);
585 memcpy(csd->data(), avctx->extradata, avctx->extradata_size);
586 sp<ABuffer> esds = MakeMPEGVideoESDS(csd);
587 meta->setData(kKeyESDS, kTypeESDS, esds->data(), esds->size());
594 meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_VIDEO_H263);
596 case CODEC_ID_MPEG2VIDEO:
598 meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_VIDEO_MPEG2);
600 sp<ABuffer> csd = new ABuffer(avctx->extradata_size);
601 memcpy(csd->data(), avctx->extradata, avctx->extradata_size);
602 sp<ABuffer> esds = MakeMPEGVideoESDS(csd);
603 meta->setData(kKeyESDS, kTypeESDS, esds->data(), esds->size());
608 meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_VIDEO_WMV);
609 meta->setData(kKeyRawCodecSpecificData, 0, avctx->extradata, avctx->extradata_size);
610 //meta->setInt32(kKeyWMVVersion, kTypeVC1); // TODO
614 meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_VIDEO_WMV);
615 meta->setInt32(kKeyWMVVersion, kTypeWMVVer_7);
619 meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_VIDEO_WMV);
620 meta->setData(kKeyRawCodecSpecificData, 0, avctx->extradata, avctx->extradata_size);
621 meta->setInt32(kKeyWMVVersion, kTypeWMVVer_8);
625 meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_VIDEO_WMV);
626 meta->setData(kKeyRawCodecSpecificData, 0, avctx->extradata, avctx->extradata_size);
627 meta->setInt32(kKeyWMVVersion, kTypeWMVVer_9);
630 CHECK(!"Should not be here. Unsupported codec.");
634 LOGI("width: %d, height: %d, bit_rate: %d", avctx->width, avctx->height, avctx->bit_rate);
636 meta->setInt32(kKeyWidth, avctx->width);
637 meta->setInt32(kKeyHeight, avctx->height);
638 if (avctx->bit_rate > 0)
639 meta->setInt32(kKeyBitRate, avctx->bit_rate);
640 if (mFormatCtx->duration != AV_NOPTS_VALUE)
641 meta->setInt64(kKeyDuration, mFormatCtx->duration);
643 LOGV("create a video track");
645 stream_index, new Track(this, meta, isAVC, mVideoStream, &mVideoQ));
647 mDefersToCreateVideoTrack = false;
650 case AVMEDIA_TYPE_AUDIO:
651 if (mAudioStreamIdx == -1)
652 mAudioStreamIdx = stream_index;
653 if (mAudioStream == NULL)
654 mAudioStream = mFormatCtx->streams[stream_index];
655 if (!mAudioQInited) {
656 packet_queue_init(&mAudioQ);
657 mAudioQInited = true;
660 ret = check_extradata(avctx);
663 // disable the stream
664 mAudioStreamIdx = -1;
666 packet_queue_end(&mAudioQ);
667 mAudioQInited = false;
668 mFormatCtx->streams[stream_index]->discard = AVDISCARD_ALL;
673 if (avctx->extradata) {
674 LOGV("audio stream extradata:");
675 hexdump(avctx->extradata, avctx->extradata_size);
677 LOGV("audio stream no extradata, but we can ignore it.");
680 switch(avctx->codec_id) {
684 meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_MPEG_LAYER_I);
689 meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_MPEG_LAYER_II);
694 meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_MPEG);
699 meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_AC3);
704 const uint8_t *header;
705 uint8_t profile, sf_index, channel;
707 header = avctx->extradata;
708 CHECK(header != NULL);
710 // AudioSpecificInfo follows
711 // oooo offf fccc c000
712 // o - audioObjectType
713 // f - samplingFreqIndex
715 profile = ((header[0] & 0xf8) >> 3) - 1;
716 sf_index = (header[0] & 0x07) << 1 | (header[1] & 0x80) >> 7;
717 sr = get_sample_rate(sf_index);
719 LOGE("unsupport the sample rate");
722 channel = (header[1] >> 3) & 0xf;
723 LOGV("profile: %d, sf_index: %d, channel: %d", profile, sf_index, channel);
725 meta = MakeAACCodecSpecificData(profile, sf_index, channel);
726 meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_AAC);
728 case CODEC_ID_WMAV1: // TODO, version?
731 meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_WMA);
732 meta->setData(kKeyRawCodecSpecificData, 0, avctx->extradata, avctx->extradata_size);
737 meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_WMA);
738 meta->setData(kKeyRawCodecSpecificData, 0, avctx->extradata, avctx->extradata_size);
739 meta->setInt32(kKeyWMAVersion, kTypeWMA);
741 case CODEC_ID_WMAPRO:
744 meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_WMA);
745 meta->setData(kKeyRawCodecSpecificData, 0, avctx->extradata, avctx->extradata_size);
746 meta->setInt32(kKeyWMAVersion, kTypeWMAPro);
748 case CODEC_ID_WMALOSSLESS:
751 meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_WMA);
752 meta->setData(kKeyRawCodecSpecificData, 0, avctx->extradata, avctx->extradata_size);
753 meta->setInt32(kKeyWMAVersion, kTypeWMALossLess);
756 CHECK(!"Should not be here. Unsupported codec.");
760 LOGI("bit_rate: %d, sample_rate: %d, channels: %d", avctx->bit_rate, avctx->sample_rate, avctx->channels);
762 meta->setInt32(kKeySampleRate, avctx->sample_rate);
763 meta->setInt32(kKeyChannelCount, avctx->channels);
764 meta->setInt32(kKeyBitRate, avctx->bit_rate);
765 if (mFormatCtx->duration != AV_NOPTS_VALUE)
766 meta->setInt64(kKeyDuration, mFormatCtx->duration);
768 LOGV("create a audio track");
770 stream_index, new Track(this, meta, false, mAudioStream, &mAudioQ));
772 mDefersToCreateAudioTrack = false;
775 case AVMEDIA_TYPE_SUBTITLE:
777 CHECK(!"Should not be here. Unsupported media type.");
780 CHECK(!"Should not be here. Unsupported media type.");
786 void FFmpegExtractor::stream_component_close(int stream_index)
788 AVCodecContext *avctx;
790 if (stream_index < 0 || stream_index >= mFormatCtx->nb_streams)
792 avctx = mFormatCtx->streams[stream_index]->codec;
794 switch (avctx->codec_type) {
795 case AVMEDIA_TYPE_VIDEO:
796 LOGV("packet_queue_abort videoq");
797 packet_queue_abort(&mVideoQ);
798 /* wait until the end */
799 while (!mAbortRequest && !mVideoEOSReceived) {
800 LOGV("wait for video received");
803 LOGV("packet_queue_end videoq");
804 packet_queue_end(&mVideoQ);
806 case AVMEDIA_TYPE_AUDIO:
807 LOGV("packet_queue_abort audioq");
808 packet_queue_abort(&mAudioQ);
809 while (!mAbortRequest && !mAudioEOSReceived) {
810 LOGV("wait for audio received");
813 LOGV("packet_queue_end audioq");
814 packet_queue_end(&mAudioQ);
816 case AVMEDIA_TYPE_SUBTITLE:
822 mFormatCtx->streams[stream_index]->discard = AVDISCARD_ALL;
823 switch (avctx->codec_type) {
824 case AVMEDIA_TYPE_VIDEO:
826 mVideoStreamIdx = -1;
828 av_bitstream_filter_close(mVideoBsfc);
832 case AVMEDIA_TYPE_AUDIO:
834 mAudioStreamIdx = -1;
836 av_bitstream_filter_close(mAudioBsfc);
840 case AVMEDIA_TYPE_SUBTITLE:
847 void FFmpegExtractor::reachedEOS(enum AVMediaType media_type)
849 Mutex::Autolock autoLock(mLock);
851 if (media_type == AVMEDIA_TYPE_VIDEO) {
852 mVideoEOSReceived = true;
853 } else if (media_type == AVMEDIA_TYPE_AUDIO) {
854 mAudioEOSReceived = true;
858 /* seek in the stream */
859 int FFmpegExtractor::stream_seek(int64_t pos, enum AVMediaType media_type)
861 Mutex::Autolock autoLock(mLock);
863 if (mVideoStreamIdx >= 0 &&
864 mAudioStreamIdx >= 0 &&
865 media_type == AVMEDIA_TYPE_AUDIO &&
866 !mVideoEOSReceived) {
871 if (mAudioStreamIdx >= 0)
872 packet_queue_flush(&mAudioQ);
873 if (mVideoStreamIdx >= 0)
874 packet_queue_flush(&mVideoQ);
877 mSeekFlags &= ~AVSEEK_FLAG_BYTE;
884 int FFmpegExtractor::decode_interrupt_cb(void *ctx)
886 FFmpegExtractor *extrator = static_cast<FFmpegExtractor *>(ctx);
887 return extrator->mAbortRequest;
890 void FFmpegExtractor::print_error_ex(const char *filename, int err)
893 const char *errbuf_ptr = errbuf;
895 if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
896 errbuf_ptr = strerror(AVUNERROR(err));
897 LOGI("%s: %s\n", filename, errbuf_ptr);
900 void FFmpegExtractor::setFFmpegDefaultOpts()
914 mSeekByBytes = 0; /* seek by bytes 0=off 1=on -1=auto" */
915 mStartTime = AV_NOPTS_VALUE;
916 mDuration = AV_NOPTS_VALUE;
917 mSeekPos = AV_NOPTS_VALUE;
921 mVideoStreamIdx = -1;
922 mAudioStreamIdx = -1;
925 mVideoQInited = false;
926 mAudioQInited = false;
927 mDefersToCreateVideoTrack = false;
928 mDefersToCreateAudioTrack = false;
941 int FFmpegExtractor::initStreams()
946 int ret = 0, audio_ret = 0, video_ret = 0;
947 int pkt_in_play_range = 0;
948 AVDictionaryEntry *t;
951 int st_index[AVMEDIA_TYPE_NB] = {0};
952 int wanted_stream[AVMEDIA_TYPE_NB] = {0};
953 st_index[AVMEDIA_TYPE_AUDIO] = -1;
954 st_index[AVMEDIA_TYPE_VIDEO] = -1;
955 wanted_stream[AVMEDIA_TYPE_AUDIO] = -1;
956 wanted_stream[AVMEDIA_TYPE_VIDEO] = -1;
958 setFFmpegDefaultOpts();
960 status = initFFmpeg();
966 av_init_packet(&flush_pkt);
967 flush_pkt.data = (uint8_t *)"FLUSH";
970 mFormatCtx = avformat_alloc_context();
971 mFormatCtx->interrupt_callback.callback = decode_interrupt_cb;
972 mFormatCtx->interrupt_callback.opaque = this;
973 LOGV("mFilename: %s", mFilename);
974 err = avformat_open_input(&mFormatCtx, mFilename, NULL, &format_opts);
976 print_error_ex(mFilename, err);
980 if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
981 LOGE("Option %s not found.\n", t->key);
982 //ret = AVERROR_OPTION_NOT_FOUND;
988 mFormatCtx->flags |= AVFMT_FLAG_GENPTS;
990 opts = setup_find_stream_info_opts(mFormatCtx, codec_opts);
991 orig_nb_streams = mFormatCtx->nb_streams;
993 err = avformat_find_stream_info(mFormatCtx, opts);
995 LOGE("%s: could not find codec parameters\n", mFilename);
999 for (i = 0; i < orig_nb_streams; i++)
1000 av_dict_free(&opts[i]);
1004 mFormatCtx->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use url_feof() to test for the end
1006 if (mSeekByBytes < 0)
1007 mSeekByBytes = !!(mFormatCtx->iformat->flags & AVFMT_TS_DISCONT);
1009 /* if seeking requested, we execute it */
1010 if (mStartTime != AV_NOPTS_VALUE) {
1013 timestamp = mStartTime;
1014 /* add the stream start time */
1015 if (mFormatCtx->start_time != AV_NOPTS_VALUE)
1016 timestamp += mFormatCtx->start_time;
1017 ret = avformat_seek_file(mFormatCtx, -1, INT64_MIN, timestamp, INT64_MAX, 0);
1019 LOGE("%s: could not seek to position %0.3f",
1020 mFilename, (double)timestamp / AV_TIME_BASE);
1025 for (i = 0; i < mFormatCtx->nb_streams; i++)
1026 mFormatCtx->streams[i]->discard = AVDISCARD_ALL;
1028 st_index[AVMEDIA_TYPE_VIDEO] =
1029 av_find_best_stream(mFormatCtx, AVMEDIA_TYPE_VIDEO,
1030 wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
1032 st_index[AVMEDIA_TYPE_AUDIO] =
1033 av_find_best_stream(mFormatCtx, AVMEDIA_TYPE_AUDIO,
1034 wanted_stream[AVMEDIA_TYPE_AUDIO],
1035 st_index[AVMEDIA_TYPE_VIDEO],
1038 av_dump_format(mFormatCtx, 0, mFilename, 0);
1041 if (mFormatCtx->duration != AV_NOPTS_VALUE) {
1042 int hours, mins, secs, us;
1043 secs = mFormatCtx->duration / AV_TIME_BASE;
1044 us = mFormatCtx->duration % AV_TIME_BASE;
1049 LOGI("the duration is %02d:%02d:%02d.%02d", hours, mins, secs, (100 * us) / AV_TIME_BASE);
1052 if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
1053 audio_ret = stream_component_open(st_index[AVMEDIA_TYPE_AUDIO]);
1056 if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
1057 video_ret = stream_component_open(st_index[AVMEDIA_TYPE_VIDEO]);
1060 if ( audio_ret < 0 && video_ret < 0) {
1061 LOGE("%s: could not open codecs\n", mFilename);
1072 void FFmpegExtractor::deInitStreams()
1075 avformat_close_input(&mFormatCtx);
1081 status_t FFmpegExtractor::startReaderThread() {
1082 LOGV("Starting reader thread");
1083 Mutex::Autolock autoLock(mLock);
1085 if (mReaderThreadStarted)
1088 pthread_attr_t attr;
1089 pthread_attr_init(&attr);
1090 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
1091 pthread_create(&mReaderThread, &attr, ReaderWrapper, this);
1092 pthread_attr_destroy(&attr);
1093 mReaderThreadStarted = true;
1094 LOGD("Reader thread started");
1099 void FFmpegExtractor::stopReaderThread() {
1100 LOGV("Stopping reader thread");
1101 Mutex::Autolock autoLock(mLock);
1103 if (!mReaderThreadStarted) {
1104 LOGD("Reader thread have been stopped");
1111 pthread_join(mReaderThread, &dummy);
1112 mReaderThreadStarted = false;
1113 LOGD("Reader thread stopped");
1117 void *FFmpegExtractor::ReaderWrapper(void *me) {
1118 ((FFmpegExtractor *)me)->readerEntry();
1123 void FFmpegExtractor::readerEntry() {
1125 AVPacket pkt1, *pkt = &pkt1;
1127 int pkt_in_play_range = 0;
1129 LOGV("FFmpegExtractor::readerEntry");
1131 mVideoEOSReceived = false;
1132 mAudioEOSReceived = false;
1138 if (mPaused != mLastPaused) {
1139 mLastPaused = mPaused;
1141 mReadPauseReturn = av_read_pause(mFormatCtx);
1143 av_read_play(mFormatCtx);
1145 #if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
1147 (!strcmp(mFormatCtx->iformat->name, "rtsp") ||
1148 (mFormatCtx->pb && !strncmp(mFilename, "mmsh:", 5)))) {
1149 /* wait 10 ms to avoid trying to get another packet */
1157 LOGV("readerEntry, mSeekReq: %d", mSeekReq);
1158 ret = avformat_seek_file(mFormatCtx, -1, INT64_MIN, mSeekPos, INT64_MAX, mSeekFlags);
1160 LOGE("%s: error while seeking", mFormatCtx->filename);
1162 if (mAudioStreamIdx >= 0) {
1163 packet_queue_flush(&mAudioQ);
1164 packet_queue_put(&mAudioQ, &flush_pkt);
1166 if (mVideoStreamIdx >= 0) {
1167 packet_queue_flush(&mVideoQ);
1168 packet_queue_put(&mVideoQ, &flush_pkt);
1175 /* if the queue are full, no need to read more */
1176 if ( mAudioQ.size + mVideoQ.size > MAX_QUEUE_SIZE
1177 || ( (mAudioQ .size > MIN_AUDIOQ_SIZE || mAudioStreamIdx < 0)
1178 && (mVideoQ .nb_packets > MIN_FRAMES || mVideoStreamIdx < 0))) {
1179 #if DEBUG_READ_ENTRY
1180 LOGV("readerEntry, is full, fuck");
1188 if (mVideoStreamIdx >= 0) {
1189 av_init_packet(pkt);
1192 pkt->stream_index = mVideoStreamIdx;
1193 packet_queue_put(&mVideoQ, pkt);
1195 if (mAudioStreamIdx >= 0) {
1196 av_init_packet(pkt);
1199 pkt->stream_index = mAudioStreamIdx;
1200 packet_queue_put(&mAudioQ, pkt);
1203 #if DEBUG_READ_ENTRY
1204 LOGV("readerEntry, eof = 1, mVideoQ.size: %d, mVideoQ.nb_packets: %d, mAudioQ.size: %d, mAudioQ.nb_packets: %d",
1205 mVideoQ.size, mVideoQ.nb_packets, mAudioQ.size, mAudioQ.nb_packets);
1207 if (mAudioQ.size + mVideoQ.size == 0) {
1208 if (mLoop != 1 && (!mLoop || --mLoop)) {
1209 if (mVideoStreamIdx >= 0) {
1210 stream_seek(mStartTime != AV_NOPTS_VALUE ? mStartTime : 0, AVMEDIA_TYPE_VIDEO);
1211 } else if (mAudioStreamIdx >= 0) {
1212 stream_seek(mStartTime != AV_NOPTS_VALUE ? mStartTime : 0, AVMEDIA_TYPE_AUDIO);
1214 } else if (mAutoExit) {
1223 ret = av_read_frame(mFormatCtx, pkt);
1226 if (ret == AVERROR_EOF || url_feof(mFormatCtx->pb))
1227 if (ret == AVERROR_EOF) {
1228 //LOGV("ret == AVERROR_EOF");
1230 if (url_feof(mFormatCtx->pb)) {
1231 //LOGV("url_feof(mFormatCtx->pb)");
1236 if (mFormatCtx->pb && mFormatCtx->pb->error) {
1237 LOGE("mFormatCtx->pb->error: %d", mFormatCtx->pb->error);
1244 if (pkt->stream_index == mVideoStreamIdx) {
1245 if (mDefersToCreateVideoTrack) {
1246 AVCodecContext *avctx = mFormatCtx->streams[mVideoStreamIdx]->codec;
1248 int i = parser_split(avctx, pkt->data, pkt->size);
1249 if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) {
1250 if (avctx->extradata)
1251 av_freep(&avctx->extradata);
1252 avctx->extradata_size= i;
1253 avctx->extradata = (uint8_t *)av_malloc(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
1254 if (!avctx->extradata) {
1255 //return AVERROR(ENOMEM);
1256 ret = AVERROR(ENOMEM);
1259 // sps + pps(there may be sei in it)
1260 memcpy(avctx->extradata, pkt->data, avctx->extradata_size);
1261 memset(avctx->extradata + i, 0, FF_INPUT_BUFFER_PADDING_SIZE);
1263 av_free_packet(pkt);
1267 stream_component_open(mVideoStreamIdx);
1268 if (!mDefersToCreateVideoTrack)
1269 LOGI("probe packet counter: %d when create video track ok", mProbePkts);
1270 if (mProbePkts == EXTRACTOR_MAX_PROBE_PACKETS)
1271 LOGI("probe packet counter to max: %d, create video track: %d",
1272 mProbePkts, !mDefersToCreateVideoTrack);
1274 } else if (pkt->stream_index == mAudioStreamIdx) {
1278 AVCodecContext *avctx = mFormatCtx->streams[mAudioStreamIdx]->codec;
1279 if (mAudioBsfc && pkt && pkt->data) {
1280 ret = av_bitstream_filter_filter(mAudioBsfc, avctx, NULL, &outbuf, &outbuf_size,
1281 pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY);
1283 if (ret < 0 ||!outbuf_size) {
1284 av_free_packet(pkt);
1287 if (outbuf && outbuf != pkt->data) {
1288 memmove(pkt->data, outbuf, outbuf_size);
1289 pkt->size = outbuf_size;
1292 if (mDefersToCreateAudioTrack) {
1293 if (avctx->extradata_size <= 0) {
1294 av_free_packet(pkt);
1297 stream_component_open(mAudioStreamIdx);
1298 if (!mDefersToCreateAudioTrack)
1299 LOGI("probe packet counter: %d when create audio track ok", mProbePkts);
1300 if (mProbePkts == EXTRACTOR_MAX_PROBE_PACKETS)
1301 LOGI("probe packet counter to max: %d, create audio track: %d",
1302 mProbePkts, !mDefersToCreateAudioTrack);
1306 /* check if packet is in play range specified by user, then queue, otherwise discard */
1307 pkt_in_play_range = mDuration == AV_NOPTS_VALUE ||
1308 (pkt->pts - mFormatCtx->streams[pkt->stream_index]->start_time) *
1309 av_q2d(mFormatCtx->streams[pkt->stream_index]->time_base) -
1310 (double)(mStartTime != AV_NOPTS_VALUE ? mStartTime : 0) / 1000000
1311 <= ((double)mDuration / 1000000);
1312 if (pkt->stream_index == mAudioStreamIdx && pkt_in_play_range) {
1313 packet_queue_put(&mAudioQ, pkt);
1314 } else if (pkt->stream_index == mVideoStreamIdx && pkt_in_play_range) {
1315 packet_queue_put(&mVideoQ, pkt);
1317 av_free_packet(pkt);
1320 /* wait until the end */
1321 while (!mAbortRequest) {
1327 LOGI("reader thread goto end...");
1329 /* close each stream */
1330 if (mAudioStreamIdx >= 0)
1331 stream_component_close(mAudioStreamIdx);
1332 if (mVideoStreamIdx >= 0)
1333 stream_component_close(mVideoStreamIdx);
1335 avformat_close_input(&mFormatCtx);
1339 ////////////////////////////////////////////////////////////////////////////////
1341 FFmpegExtractor::Track::Track(
1342 const sp<FFmpegExtractor> &extractor, sp<MetaData> meta, bool isAVC,
1343 AVStream *stream, PacketQueue *queue)
1344 : mExtractor(extractor),
1351 /* H.264 Video Types */
1353 mNal2AnnexB = false;
1359 CHECK(meta->findData(kKeyAVCC, &type, &data, &size));
1361 const uint8_t *ptr = (const uint8_t *)data;
1364 CHECK_EQ((unsigned)ptr[0], 1u); // configurationVersion == 1
1366 // The number of bytes used to encode the length of a NAL unit.
1367 mNALLengthSize = 1 + (ptr[4] & 3);
1369 LOGV("the stream is AVC, the length of a NAL unit: %d", mNALLengthSize);
1375 mMediaType = mStream->codec->codec_type;
1378 FFmpegExtractor::Track::~Track() {
1381 status_t FFmpegExtractor::Track::start(MetaData *params) {
1382 Mutex::Autolock autoLock(mLock);
1383 //mExtractor->startReaderThread();
1387 status_t FFmpegExtractor::Track::stop() {
1388 Mutex::Autolock autoLock(mLock);
1389 mExtractor->stopReaderThread();
1393 sp<MetaData> FFmpegExtractor::Track::getFormat() {
1394 Mutex::Autolock autoLock(mLock);
1399 status_t FFmpegExtractor::Track::read(
1400 MediaBuffer **buffer, const ReadOptions *options) {
1403 Mutex::Autolock autoLock(mLock);
1406 bool seeking = false;
1407 bool waitKeyPkt = false;
1408 ReadOptions::SeekMode mode;
1409 int64_t pktTS = AV_NOPTS_VALUE;
1410 int64_t seekTimeUs = AV_NOPTS_VALUE;
1413 status_t status = OK;
1415 if (options && options->getSeekTo(&seekTimeUs, &mode)) {
1416 LOGV("~~~%s seekTimeUs: %lld, mode: %d", av_get_media_type_string(mMediaType), seekTimeUs, mode);
1417 if (mExtractor->stream_seek(seekTimeUs, mMediaType) == SEEK)
1422 if (mExtractor->packet_queue_get(mQueue, &pkt, 1) < 0) {
1423 mExtractor->reachedEOS(mMediaType);
1424 return ERROR_END_OF_STREAM;
1428 if (pkt.data != flush_pkt.data) {
1429 av_free_packet(&pkt);
1433 #if WAIT_KEY_PACKET_AFTER_SEEK
1439 if (pkt.data == flush_pkt.data) {
1440 LOGV("read %s flush pkt", av_get_media_type_string(mMediaType));
1441 av_free_packet(&pkt);
1443 } else if (pkt.data == NULL && pkt.size == 0) {
1444 LOGV("read %s eos pkt", av_get_media_type_string(mMediaType));
1445 av_free_packet(&pkt);
1446 mExtractor->reachedEOS(mMediaType);
1447 return ERROR_END_OF_STREAM;
1450 key = pkt.flags & AV_PKT_FLAG_KEY ? 1 : 0;
1454 LOGV("drop the no key packet");
1455 av_free_packet(&pkt);
1458 LOGV("~~~~~~ got the key packet");
1463 MediaBuffer *mediaBuffer = new MediaBuffer(pkt.size + FF_INPUT_BUFFER_PADDING_SIZE);
1464 mediaBuffer->meta_data()->clear();
1465 mediaBuffer->set_range(0, pkt.size);
1466 #if DISABLE_NAL_TO_ANNEXB
1467 mNal2AnnexB = false;
1469 if (mIsAVC && mNal2AnnexB) {
1470 /* Convert H.264 NAL format to annex b */
1471 if (mNALLengthSize >= 3 && mNALLengthSize <= 4 )
1473 uint8_t *dst = (uint8_t *)mediaBuffer->data();
1475 /* This only works for NAL sizes 3-4 */
1476 size_t len = pkt.size, i;
1477 uint8_t *ptr = pkt.data;
1478 while (len >= mNALLengthSize) {
1479 uint32_t nal_len = 0;
1480 for( i = 0; i < mNALLengthSize; i++ ) {
1481 nal_len = (nal_len << 8) | ptr[i];
1484 dst[mNALLengthSize - 1] = 1;
1485 if (nal_len > INT_MAX || nal_len > (unsigned int)len) {
1486 status = ERROR_MALFORMED;
1489 dst += mNALLengthSize;
1490 ptr += mNALLengthSize;
1491 len -= mNALLengthSize;
1493 memcpy(dst, ptr, nal_len);
1500 status = ERROR_MALFORMED;
1504 LOGV("status != OK");
1505 mediaBuffer->release();
1507 av_free_packet(&pkt);
1508 return ERROR_MALFORMED;
1511 memcpy(mediaBuffer->data(), pkt.data, pkt.size);
1516 if (pkt.pts == AV_NOPTS_VALUE)
1520 // TODO, Stagefright can't handle negative timestamps
1521 // if needed, work around this by offsetting them manually?
1526 timeUs = (int64_t)(pktTS * av_q2d(mStream->time_base) * 1000000);
1529 LOGV("read %s pkt, size: %d, key: %d, pts: %lld, dts: %lld, timeUs: %llu us (%.2f secs)",
1530 av_get_media_type_string(mMediaType), pkt.size, key, pkt.pts, pkt.dts, timeUs, timeUs/1E6);
1534 // TODO, Stagefright can't handle negative timestamps
1535 // if needed, work around this by offsetting them manually?
1540 mediaBuffer->meta_data()->setInt64(kKeyTime, timeUs);
1541 mediaBuffer->meta_data()->setInt32(kKeyIsSyncFrame, key);
1543 *buffer = mediaBuffer;
1545 av_free_packet(&pkt);
1550 ////////////////////////////////////////////////////////////////////////////////
1552 // LegacySniffFFMPEG
1554 const char *extension;
1555 const char *container;
1558 static extmap FILE_EXTS[] = {
1559 {".mp4", MEDIA_MIMETYPE_CONTAINER_MPEG4},
1560 {".3gp", MEDIA_MIMETYPE_CONTAINER_MPEG4},
1561 {".mp3", MEDIA_MIMETYPE_AUDIO_MPEG},
1562 {".mov", MEDIA_MIMETYPE_CONTAINER_MOV},
1563 {".mkv", MEDIA_MIMETYPE_CONTAINER_MATROSKA},
1564 {".ts", MEDIA_MIMETYPE_CONTAINER_TS},
1565 {".avi", MEDIA_MIMETYPE_CONTAINER_AVI},
1566 {".asf", MEDIA_MIMETYPE_CONTAINER_ASF},
1568 {".wmv", MEDIA_MIMETYPE_CONTAINER_WMV},
1569 {".wma", MEDIA_MIMETYPE_CONTAINER_WMA},
1570 {".mpg", MEDIA_MIMETYPE_CONTAINER_MPG},
1571 {".flv", MEDIA_MIMETYPE_CONTAINER_FLV},
1572 {".divx", MEDIA_MIMETYPE_CONTAINER_DIVX},
1573 {".mp2", MEDIA_MIMETYPE_CONTAINER_MP2},
1574 {".ape", MEDIA_MIMETYPE_CONTAINER_APE},
1575 {".rm ", MEDIA_MIMETYPE_CONTAINER_RM},
1576 {".ra", MEDIA_MIMETYPE_CONTAINER_RA},
1580 const char *LegacySniffFFMPEG(const char * uri)
1583 const char *container = NULL;
1585 LOGI("list the file extensions suppoted by ffmpeg: ");
1586 LOGI("========================================");
1587 for (i = 0; i < NELEM(FILE_EXTS); ++i) {
1588 LOGV("file_exts[%02d]: %s", i, FILE_EXTS[i].extension);
1590 LOGI("========================================");
1592 int lenURI = strlen(uri);
1593 for (i = 0; i < NELEM(FILE_EXTS); ++i) {
1594 int len = strlen(FILE_EXTS[i].extension);
1595 int start = lenURI - len;
1597 if (!av_strncasecmp(uri + start, FILE_EXTS[i].extension, len)) {
1598 container = FILE_EXTS[i].container;
1607 // BetterSniffFFMPEG
1610 const char *container;
1613 static formatmap FILE_FORMATS[] = {
1614 {"mpegts", MEDIA_MIMETYPE_CONTAINER_TS},
1615 {"mov,mp4,m4a,3gp,3g2,mj2", MEDIA_MIMETYPE_CONTAINER_MOV},
1616 {"asf", MEDIA_MIMETYPE_CONTAINER_ASF},
1619 const char *BetterSniffFFMPEG(const char * uri)
1622 const char *container = NULL;
1623 AVFormatContext *ic = NULL;
1625 status_t status = initFFmpeg();
1627 LOGE("could not init ffmpeg");
1631 ic = avformat_alloc_context();
1632 avformat_open_input(&ic, uri, NULL, NULL);
1634 av_dump_format(ic, 0, uri, 0);
1636 LOGI("FFmpegExtrator, uri: %s, format_name: %s, format_long_name: %s", uri, ic->iformat->name, ic->iformat->long_name);
1638 LOGI("list the format suppoted by ffmpeg: ");
1639 LOGI("========================================");
1640 for (i = 0; i < NELEM(FILE_FORMATS); ++i) {
1641 LOGV("format_names[%02d]: %s", i, FILE_FORMATS[i].format);
1643 LOGI("========================================");
1645 for (i = 0; i < NELEM(FILE_FORMATS); ++i) {
1646 int len = strlen(FILE_FORMATS[i].format);
1647 if (!av_strncasecmp(ic->iformat->name, FILE_FORMATS[i].format, len)) {
1648 container = FILE_FORMATS[i].container;
1653 avformat_close_input(&ic);
1660 const sp<DataSource> &source, String8 *mimeType, float *confidence,
1661 sp<AMessage> *meta) {
1662 LOGV("SniffFFMPEG");
1663 const char *uri, *container = NULL;
1665 uri = source->getNamURI();
1670 LOGI("ffmpeg uri: %s", uri);
1672 container = BetterSniffFFMPEG(uri);
1674 LOGW("sniff through LegacySniffFFMPEG, only check the file extension");
1675 container = LegacySniffFFMPEG(uri);
1678 if (container == NULL)
1681 LOGV("found container: %s", container);
1683 *confidence = 0.88f; // Slightly larger than other extractor's confidence
1684 mimeType->setTo(container);
1686 /* use MPEG4Extractor(not extended extractor) for HTTP source only */
1687 if (!av_strcasecmp(container, MEDIA_MIMETYPE_CONTAINER_MPEG4)
1688 && (source->flags() & DataSource::kIsCachingDataSource)) {
1692 *meta = new AMessage;
1693 (*meta)->setString("extended-extractor", "extended-extractor");
1694 (*meta)->setString("extended-extractor-subtype", "ffmpegextractor");
1699 } // namespace android