1 /* 2 * Copyright (C) 2017 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 #ifndef FRAME_DECODER_H_ 18 #define FRAME_DECODER_H_ 19 20 #include <memory> 21 #include <vector> 22 23 #include <media/stagefright/foundation/AString.h> 24 #include <media/stagefright/foundation/ABase.h> 25 #include <media/MediaSource.h> 26 #include <media/openmax/OMX_Video.h> 27 #include <system/graphics-base.h> 28 29 namespace android { 30 31 struct AMessage; 32 class MediaCodecBuffer; 33 class IMediaSource; 34 class VideoFrame; 35 struct MediaCodec; 36 37 struct FrameRect { 38 int32_t left, top, right, bottom; 39 }; 40 41 struct FrameDecoder : public RefBase { 42 FrameDecoder( 43 const AString &componentName, 44 const sp<MetaData> &trackMeta, 45 const sp<IMediaSource> &source); 46 47 status_t init( 48 int64_t frameTimeUs, size_t numFrames, int option, int colorFormat); 49 50 sp<IMemory> extractFrame(FrameRect *rect = NULL); 51 52 status_t extractFrames(std::vector<sp<IMemory> >* frames); 53 54 static sp<IMemory> getMetadataOnly( 55 const sp<MetaData> &trackMeta, int colorFormat, bool thumbnail = false); 56 57 protected: 58 virtual ~FrameDecoder(); 59 60 virtual sp<AMessage> onGetFormatAndSeekOptions( 61 int64_t frameTimeUs, 62 size_t numFrames, 63 int seekMode, 64 MediaSource::ReadOptions *options) = 0; 65 66 virtual status_t onExtractRect(FrameRect *rect) = 0; 67 68 virtual status_t onInputReceived( 69 const sp<MediaCodecBuffer> &codecBuffer, 70 MetaDataBase &sampleMeta, 71 bool firstSample, 72 uint32_t *flags) = 0; 73 74 virtual status_t onOutputReceived( 75 const sp<MediaCodecBuffer> &videoFrameBuffer, 76 const sp<AMessage> &outputFormat, 77 int64_t timeUs, 78 bool *done) = 0; 79 80 sp<MetaData> trackMeta() const { return mTrackMeta; } 81 OMX_COLOR_FORMATTYPE dstFormat() const { return mDstFormat; } 82 int32_t dstBpp() const { return mDstBpp; } 83 84 void addFrame(const sp<IMemory> &frame) { 85 mFrames.push_back(frame); 86 } 87 88 private: 89 AString mComponentName; 90 sp<MetaData> mTrackMeta; 91 sp<IMediaSource> mSource; 92 OMX_COLOR_FORMATTYPE mDstFormat; 93 int32_t mDstBpp; 94 std::vector<sp<IMemory> > mFrames; 95 MediaSource::ReadOptions mReadOptions; 96 sp<MediaCodec> mDecoder; 97 sp<AMessage> mOutputFormat; 98 bool mHaveMoreInputs; 99 bool mFirstSample; 100 101 status_t extractInternal(); 102 103 DISALLOW_EVIL_CONSTRUCTORS(FrameDecoder); 104 }; 105 106 struct VideoFrameDecoder : public FrameDecoder { 107 VideoFrameDecoder( 108 const AString &componentName, 109 const sp<MetaData> &trackMeta, 110 const sp<IMediaSource> &source); 111 112 protected: 113 virtual sp<AMessage> onGetFormatAndSeekOptions( 114 int64_t frameTimeUs, 115 size_t numFrames, 116 int seekMode, 117 MediaSource::ReadOptions *options) override; 118 119 virtual status_t onExtractRect(FrameRect *rect) override { 120 // Rect extraction for sequences is not supported for now. 121 return (rect == NULL) ? OK : ERROR_UNSUPPORTED; 122 } 123 124 virtual status_t onInputReceived( 125 const sp<MediaCodecBuffer> &codecBuffer, 126 MetaDataBase &sampleMeta, 127 bool firstSample, 128 uint32_t *flags) override; 129 130 virtual status_t onOutputReceived( 131 const sp<MediaCodecBuffer> &videoFrameBuffer, 132 const sp<AMessage> &outputFormat, 133 int64_t timeUs, 134 bool *done) override; 135 136 private: 137 bool mIsAvcOrHevc; 138 MediaSource::ReadOptions::SeekMode mSeekMode; 139 int64_t mTargetTimeUs; 140 size_t mNumFrames; 141 size_t mNumFramesDecoded; 142 }; 143 144 struct ImageDecoder : public FrameDecoder { 145 ImageDecoder( 146 const AString &componentName, 147 const sp<MetaData> &trackMeta, 148 const sp<IMediaSource> &source); 149 150 protected: 151 virtual sp<AMessage> onGetFormatAndSeekOptions( 152 int64_t frameTimeUs, 153 size_t numFrames, 154 int seekMode, 155 MediaSource::ReadOptions *options) override; 156 157 virtual status_t onExtractRect(FrameRect *rect) override; 158 159 virtual status_t onInputReceived( 160 const sp<MediaCodecBuffer> &codecBuffer __unused, 161 MetaDataBase &sampleMeta __unused, 162 bool firstSample __unused, 163 uint32_t *flags __unused) override { return OK; } 164 165 virtual status_t onOutputReceived( 166 const sp<MediaCodecBuffer> &videoFrameBuffer, 167 const sp<AMessage> &outputFormat, 168 int64_t timeUs, 169 bool *done) override; 170 171 private: 172 VideoFrame *mFrame; 173 int32_t mWidth; 174 int32_t mHeight; 175 int32_t mGridRows; 176 int32_t mGridCols; 177 int32_t mTileWidth; 178 int32_t mTileHeight; 179 int32_t mTilesDecoded; 180 int32_t mTargetTiles; 181 }; 182 183 } // namespace android 184 185 #endif // FRAME_DECODER_H_ 186
