1 /* 2 * Copyright (c) 2009-2011 Intel Corporation. All rights reserved. 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 VIDEO_DECODER_BASE_H_ 18 #define VIDEO_DECODER_BASE_H_ 19 20 #include <va/va.h> 21 #include <va/va_tpi.h> 22 #include "VideoDecoderDefs.h" 23 #include "VideoDecoderInterface.h" 24 #include <pthread.h> 25 #include <dlfcn.h> 26 27 extern "C" { 28 #include "vbp_loader.h" 29 } 30 31 #ifndef Display 32 #ifdef USE_GEN_HW 33 typedef char Display; 34 #else 35 typedef unsigned int Display; 36 #endif 37 #endif 38 39 // TODO: check what is the best number. Must be at least 2 to support one backward reference frame. 40 // Currently set to 8 to support 7 backward reference frames. This value is used for AVC frame reordering only. 41 // e.g: 42 // POC: 4P, 8P, 10P, 6B and mNextOutputPOC = 5 43 #define OUTPUT_WINDOW_SIZE 8 44 45 class VideoDecoderBase : public IVideoDecoder { 46 public: 47 VideoDecoderBase(const char *mimeType, _vbp_parser_type type); 48 virtual ~VideoDecoderBase(); 49 50 virtual Decode_Status start(VideoConfigBuffer *buffer); 51 virtual Decode_Status reset(VideoConfigBuffer *buffer) ; 52 virtual void stop(void); 53 //virtual Decode_Status decode(VideoDecodeBuffer *buffer); 54 virtual void flush(void); 55 virtual void freeSurfaceBuffers(void); 56 virtual const VideoRenderBuffer* getOutput(bool draining = false, VideoErrorBuffer *output_buf = NULL); 57 virtual Decode_Status signalRenderDone(void * graphichandler); 58 virtual const VideoFormatInfo* getFormatInfo(void); 59 virtual bool checkBufferAvail(); 60 virtual void enableErrorReport(bool enabled = false) {mErrReportEnabled = enabled; }; 61 62 protected: 63 // each acquireSurfaceBuffer must be followed by a corresponding outputSurfaceBuffer or releaseSurfaceBuffer. 64 // Only one surface buffer can be acquired at any given time 65 virtual Decode_Status acquireSurfaceBuffer(void); 66 // frame is successfully decoded to the acquired surface buffer and surface is ready for output 67 virtual Decode_Status outputSurfaceBuffer(void); 68 // acquired surface buffer is not used 69 virtual Decode_Status releaseSurfaceBuffer(void); 70 // flush all decoded but not rendered buffers 71 virtual void flushSurfaceBuffers(void); 72 virtual Decode_Status endDecodingFrame(bool dropFrame); 73 virtual VideoSurfaceBuffer* findOutputByPoc(bool draining = false); 74 virtual VideoSurfaceBuffer* findOutputByPct(bool draining = false); 75 virtual VideoSurfaceBuffer* findOutputByPts(); 76 virtual Decode_Status setupVA(uint32_t numSurface, VAProfile profile, uint32_t numExtraSurface = 0); 77 virtual Decode_Status terminateVA(void); 78 virtual Decode_Status parseBuffer(uint8_t *buffer, int32_t size, bool config, void** vbpData); 79 80 static inline uint32_t alignMB(uint32_t a) { 81 return ((a + 15) & (~15)); 82 } 83 84 virtual Decode_Status getRawDataFromSurface(VideoRenderBuffer *renderBuffer = NULL, uint8_t *pRawData = NULL, uint32_t *pSize = NULL, bool internal = true); 85 86 #if (defined USE_AVC_SHORT_FORMAT) || (defined USE_SLICE_HEADER_PARSING) 87 Decode_Status updateBuffer(uint8_t *buffer, int32_t size, void** vbpData); 88 Decode_Status queryBuffer(void **vbpData); 89 Decode_Status setParserType(_vbp_parser_type type); 90 virtual Decode_Status getCodecSpecificConfigs(VAProfile profile, VAConfigID *config); 91 #endif 92 virtual Decode_Status checkHardwareCapability(); 93 private: 94 Decode_Status mapSurface(void); 95 void initSurfaceBuffer(bool reset); 96 void drainDecodingErrors(VideoErrorBuffer *outErrBuf, VideoRenderBuffer *currentSurface); 97 void fillDecodingErrors(VideoRenderBuffer *currentSurface); 98 99 bool mInitialized; 100 pthread_mutex_t mLock; 101 102 protected: 103 bool mLowDelay; // when true, decoded frame is immediately output for rendering 104 VideoFormatInfo mVideoFormatInfo; 105 Display *mDisplay; 106 VADisplay mVADisplay; 107 VAContextID mVAContext; 108 VAConfigID mVAConfig; 109 VASurfaceID *mExtraSurfaces; // extra surfaces array 110 int32_t mNumExtraSurfaces; 111 bool mVAStarted; 112 uint64_t mCurrentPTS; // current presentation time stamp (unit is unknown, depend on the framework: GStreamer 100-nanosec, Android: microsecond) 113 // the following three member variables should be set using 114 // acquireSurfaceBuffer/outputSurfaceBuffer/releaseSurfaceBuffer 115 VideoSurfaceBuffer *mAcquiredBuffer; 116 VideoSurfaceBuffer *mLastReference; 117 VideoSurfaceBuffer *mForwardReference; 118 VideoConfigBuffer mConfigBuffer; // only store configure meta data. 119 bool mDecodingFrame; // indicate whether a frame is being decoded 120 bool mSizeChanged; // indicate whether video size is changed. 121 bool mShowFrame; // indicate whether the decoded frame is for display 122 123 int32_t mOutputWindowSize; // indicate limit of number of outstanding frames for output 124 int32_t mRotationDegrees; 125 126 bool mErrReportEnabled; 127 bool mWiDiOn; 128 typedef uint32_t (*OpenFunc)(uint32_t, void **); 129 typedef uint32_t (*CloseFunc)(void *); 130 typedef uint32_t (*ParseFunc)(void *, uint8_t *, uint32_t, uint8_t); 131 typedef uint32_t (*QueryFunc)(void *, void **); 132 typedef uint32_t (*FlushFunc)(void *); 133 typedef uint32_t (*UpdateFunc)(void *, void *, uint32_t, void **); 134 void *mLibHandle; 135 OpenFunc mParserOpen; 136 CloseFunc mParserClose; 137 ParseFunc mParserParse; 138 QueryFunc mParserQuery; 139 FlushFunc mParserFlush; 140 UpdateFunc mParserUpdate; 141 enum { 142 // TODO: move this to vbp_loader.h 143 VBP_INVALID = 0xFF, 144 // TODO: move this to va.h 145 VAProfileSoftwareDecoding = 0xFF, 146 }; 147 148 enum OUTPUT_METHOD { 149 // output by Picture Coding Type (I, P, B) 150 OUTPUT_BY_PCT, 151 // output by Picture Order Count (for AVC only) 152 OUTPUT_BY_POC, 153 //OUTPUT_BY_POS, 154 //OUTPUT_BY_PTS, 155 }; 156 157 private: 158 bool mRawOutput; // whether to output NV12 raw data 159 bool mManageReference; // this should stay true for VC1/MP4 decoder, and stay false for AVC decoder. AVC handles reference frame using DPB 160 OUTPUT_METHOD mOutputMethod; 161 162 int32_t mNumSurfaces; 163 VideoSurfaceBuffer *mSurfaceBuffers; 164 VideoSurfaceBuffer *mOutputHead; // head of output buffer list 165 VideoSurfaceBuffer *mOutputTail; // tail of output buffer list 166 VASurfaceID *mSurfaces; // surfaces array 167 VASurfaceAttribExternalBuffers *mVASurfaceAttrib; 168 uint8_t **mSurfaceUserPtr; // mapped user space pointer 169 int32_t mSurfaceAcquirePos; // position of surface to start acquiring 170 int32_t mNextOutputPOC; // Picture order count of next output 171 _vbp_parser_type mParserType; 172 void *mParserHandle; 173 void *mSignalBufferPre[MAX_GRAPHIC_BUFFER_NUM]; 174 uint32 mSignalBufferSize; 175 bool mUseGEN; 176 protected: 177 void ManageReference(bool enable) {mManageReference = enable;} 178 void setOutputMethod(OUTPUT_METHOD method) {mOutputMethod = method;} 179 void setOutputWindowSize(int32_t size) {mOutputWindowSize = (size < OUTPUT_WINDOW_SIZE) ? size : OUTPUT_WINDOW_SIZE;} 180 void querySurfaceRenderStatus(VideoSurfaceBuffer* surface); 181 void enableLowDelayMode(bool enable) {mLowDelay = enable;} 182 void setRotationDegrees(int32_t rotationDegrees); 183 void setRenderRect(void); 184 }; 185 186 187 #endif // VIDEO_DECODER_BASE_H_ 188
