问题已解决。参照
SDK_DIR/buildroot/package/auto下有sdk_demo。
SDK_DIR下执行.buildconfig后，执行./buildroot/package/auto/build.sh可以编译demo。
但是demo上的解码器如指导文档所说，解码出图滞后。所以解单帧h264时，demo不会出图。建议参照demo里的stopAndGetLeftFrame函数做修改，把滞后的图像取出。测试可行。

int stopAndGetLeftFrame() { int nRet; int leftFrame = VideoStreamFrameNum(pVideoDec, 0); ALOGD("VideoStreamFrameNum:%d", leftFrame); if (leftFrame > 0) { int waitLoop = 0; while (leftFrame > 0) { nRet = DecodeVideoStream(pVideoDec, 1 /*eos*/, 0/*key frame only*/, 0/*drop b frame*/, 0/*current time*/); ALOGD("DecodeVideoStream:%d", nRet); if ((nRet == VDECODE_RESULT_NO_FRAME_BUFFER) || (nRet == VDECODE_RESULT_NO_BITSTREAM)) { break; } usleep(200); waitLoop++; leftFrame--; if (waitLoop > 50) { ALOGW("decode eos time out > 10 ms!"); break; } } } else { ALOGD("There is no left fream to decode!"); } int nValidPicNum = ValidPictureNum(pVideoDec, 0); ALOGD("ValidPictureNum:%d", nValidPicNum); if (nValidPicNum <= 0) { nRet = -2; ALOGW("nValidPicNum:%d, no pic left.", nValidPicNum); return nRet; } while(nValidPicNum > 0) { pPicture = RequestPicture(pVideoDec, 0/*the major stream*/); //VdecH264:step6 if (pPicture != NULL) { AVPacket outPacket; outPacket.id = pPicture->nID; outPacket.pts = pPicture->nPts; outPacket.pAddrPhy0 = (unsigned char*)pPicture->phyYBufAddr; outPacket.pAddrVir0 = (unsigned char*)pPicture->pData0; outPacket.dataLen0 = pPicture->nWidth * pPicture->nHeight; outPacket.pAddrPhy1 = (unsigned char*)pPicture->phyCBufAddr; outPacket.pAddrVir1 = (unsigned char*)pPicture->pData1; outPacket.dataLen1 = outPacket.dataLen0 / 2; if (NULL != mDataCbk) { mDataCbk->decoderDataReady(&outPacket); } ReturnPicture(pVideoDec, pPicture); nValidPicNum--; } else { ALOGW("pPicture == NULL."); return -2; } } return nRet; }

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