| /* |
| ** |
| ** Copyright 2009, The Android Open Source Project |
| ** |
| ** Licensed under the Apache License, Version 2.0 (the "License"); |
| ** you may not use this file except in compliance with the License. |
| ** You may obtain a copy of the License at |
| ** |
| ** http://www.apache.org/licenses/LICENSE-2.0 |
| ** |
| ** Unless required by applicable law or agreed to in writing, software |
| ** distributed under the License is distributed on an "AS IS" BASIS, |
| ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| ** See the License for the specific language governing permissions and |
| ** limitations under the License. |
| */ |
| |
| //#define LOG_NDEBUG 0 |
| #define LOG_TAG "StagefrightMetadataRetriever" |
| #include <utils/Log.h> |
| |
| #include "StagefrightMetadataRetriever.h" |
| |
| #include <media/stagefright/CachingDataSource.h> |
| #include <media/stagefright/ColorConverter.h> |
| #include <media/stagefright/DataSource.h> |
| #include <media/stagefright/HTTPDataSource.h> |
| #include <media/stagefright/MediaDebug.h> |
| #include <media/stagefright/MediaExtractor.h> |
| #include <media/stagefright/MetaData.h> |
| #include <media/stagefright/MmapSource.h> |
| #include <media/stagefright/OMXCodec.h> |
| |
| namespace android { |
| |
| StagefrightMetadataRetriever::StagefrightMetadataRetriever() { |
| LOGV("StagefrightMetadataRetriever()"); |
| |
| DataSource::RegisterDefaultSniffers(); |
| CHECK_EQ(mClient.connect(), OK); |
| } |
| |
| StagefrightMetadataRetriever::~StagefrightMetadataRetriever() { |
| LOGV("~StagefrightMetadataRetriever()"); |
| mClient.disconnect(); |
| } |
| |
| status_t StagefrightMetadataRetriever::setDataSource(const char *uri) { |
| LOGV("setDataSource(%s)", uri); |
| |
| mExtractor = MediaExtractor::CreateFromURI(uri); |
| |
| return mExtractor.get() != NULL ? OK : UNKNOWN_ERROR; |
| } |
| |
| status_t StagefrightMetadataRetriever::setDataSource( |
| int fd, int64_t offset, int64_t length) { |
| LOGV("setDataSource(%d, %lld, %lld)", fd, offset, length); |
| |
| mExtractor = MediaExtractor::Create( |
| new MmapSource(fd, offset, length)); |
| |
| return OK; |
| } |
| |
| VideoFrame *StagefrightMetadataRetriever::captureFrame() { |
| LOGV("captureFrame"); |
| |
| if (mExtractor.get() == NULL) { |
| LOGV("no extractor."); |
| return NULL; |
| } |
| |
| size_t n = mExtractor->countTracks(); |
| size_t i; |
| for (i = 0; i < n; ++i) { |
| sp<MetaData> meta = mExtractor->getTrackMetaData(i); |
| |
| const char *mime; |
| CHECK(meta->findCString(kKeyMIMEType, &mime)); |
| |
| if (!strncasecmp(mime, "video/", 6)) { |
| break; |
| } |
| } |
| |
| if (i == n) { |
| LOGV("no video track found."); |
| return NULL; |
| } |
| |
| sp<MetaData> trackMeta = mExtractor->getTrackMetaData( |
| i, MediaExtractor::kIncludeExtensiveMetaData); |
| |
| sp<MediaSource> source = mExtractor->getTrack(i); |
| |
| if (source.get() == NULL) { |
| LOGV("unable to instantiate video track."); |
| return NULL; |
| } |
| |
| sp<MetaData> meta = source->getFormat(); |
| |
| sp<MediaSource> decoder = |
| OMXCodec::Create( |
| mClient.interface(), meta, false, source, |
| NULL, OMXCodec::kPreferSoftwareCodecs); |
| |
| if (decoder.get() == NULL) { |
| LOGV("unable to instantiate video decoder."); |
| |
| return NULL; |
| } |
| |
| decoder->start(); |
| |
| // Read one output buffer, ignore format change notifications |
| // and spurious empty buffers. |
| |
| MediaSource::ReadOptions options; |
| int64_t thumbNailTime; |
| if (trackMeta->findInt64(kKeyThumbnailTime, &thumbNailTime)) { |
| options.setSeekTo(thumbNailTime); |
| } |
| |
| MediaBuffer *buffer = NULL; |
| status_t err; |
| do { |
| if (buffer != NULL) { |
| buffer->release(); |
| buffer = NULL; |
| } |
| err = decoder->read(&buffer, &options); |
| options.clearSeekTo(); |
| } while (err == INFO_FORMAT_CHANGED |
| || (buffer != NULL && buffer->range_length() == 0)); |
| |
| if (err != OK) { |
| CHECK_EQ(buffer, NULL); |
| |
| LOGV("decoding frame failed."); |
| decoder->stop(); |
| |
| return NULL; |
| } |
| |
| LOGV("successfully decoded video frame."); |
| |
| meta = decoder->getFormat(); |
| |
| int32_t width, height; |
| CHECK(meta->findInt32(kKeyWidth, &width)); |
| CHECK(meta->findInt32(kKeyHeight, &height)); |
| |
| VideoFrame *frame = new VideoFrame; |
| frame->mWidth = width; |
| frame->mHeight = height; |
| frame->mDisplayWidth = width; |
| frame->mDisplayHeight = height; |
| frame->mSize = width * height * 2; |
| frame->mData = new uint8_t[frame->mSize]; |
| |
| int32_t srcFormat; |
| CHECK(meta->findInt32(kKeyColorFormat, &srcFormat)); |
| |
| ColorConverter converter( |
| (OMX_COLOR_FORMATTYPE)srcFormat, OMX_COLOR_Format16bitRGB565); |
| CHECK(converter.isValid()); |
| |
| converter.convert( |
| width, height, |
| (const uint8_t *)buffer->data() + buffer->range_offset(), |
| 0, |
| frame->mData, width * 2); |
| |
| buffer->release(); |
| buffer = NULL; |
| |
| decoder->stop(); |
| |
| return frame; |
| } |
| |
| MediaAlbumArt *StagefrightMetadataRetriever::extractAlbumArt() { |
| LOGV("extractAlbumArt (extractor: %s)", mExtractor.get() != NULL ? "YES" : "NO"); |
| |
| return NULL; |
| } |
| |
| const char *StagefrightMetadataRetriever::extractMetadata(int keyCode) { |
| LOGV("extractMetadata %d (extractor: %s)", |
| keyCode, mExtractor.get() != NULL ? "YES" : "NO"); |
| |
| return NULL; |
| } |
| |
| } // namespace android |