rocm-systems/src/rocdecode/roc_decoder.cpp

/*
Copyright (c) 2023 - 2023 Advanced Micro Devices, Inc. All rights reserved.

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The above copyright notice and this permission notice shall be included in
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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*/

#include "../commons.h"
#include "roc_decoder.h"

RocDecoder::RocDecoder(int device_id, int num_devices):device_id_ {device_id}, num_devices_{num_devices} {
  // todo:: 
    if (ROCDEC_SUCCESS != initHIP(device_id_)) {
        THROW("Failed to initilize the HIP");
    }
    initDRMnodes();

}

rocDecStatus RocDecoder::getDecoderCaps(RocdecDecodeCaps *pdc) {
    // todo:: return appropriate decStatus if fails
    //vaQueryConfigProfiles
    // fill the RocdecDecodeCaps struct
    // return status
    return ROCDEC_NOT_IMPLEMENTED;
}

rocDecStatus RocDecoder::decodeFrame(RocdecPicParams *pPicParams) {
    // todo:: return appropriate decStatus if fails
    // call funsction to do va-api decoding using the picture parameters structure
    // return status
    return ROCDEC_NOT_IMPLEMENTED;
}

rocDecStatus RocDecoder::getDecodeStatus(int nPicIdx, RocdecDecodeStatus* pDecodeStatus) {
    // todo:: return appropriate decStatus
    // init vaapi decoder to get the decoding status of the picture specified by nPicIndex 
    // return status
    return ROCDEC_NOT_IMPLEMENTED;
}

rocDecStatus RocDecoder::reconfigureDecoder(RocdecReconfigureDecoderInfo *pDecReconfigParams) {
    // todo:: return appropriate decStatus
    // this will be called when the current configuration is changed during decoding
    // release the current va-api decoder instance and create a new one with the new parameters (or reinit if available)
    // return status
    return ROCDEC_NOT_IMPLEMENTED;
}

rocDecStatus RocDecoder::mapVideoFrame(int nPicIdx, void *pDevMemPtr[3],
                                unsigned int *pHorizontalPitch[3], RocdecProcParams *pVidPostprocParams) {
    // todo:: return appropriate decStatus
    // Post-process and map video frame corresponding to nPicIdx for use in HIP. Returns HIP device pointer and associated
    // pitch(horizontal stride) of the video frame. Returns device memory pointers for each plane (Y, U and V) seperately
    return ROCDEC_NOT_IMPLEMENTED;
}

rocDecStatus RocDecoder::unMapVideoFrame(void *pMappedDevPtr) {
    // todo:: return appropriate decStatus
    // Unmap a previously mapped video frame with the associated mapped raw pointer (pMappedDevPtr)
    return ROCDEC_NOT_IMPLEMENTED;
}


rocDecStatus RocDecoder::initHIP(int device_id) {
    hipError_t hipStatus = hipSuccess;
    hipStatus = hipGetDeviceCount(&num_devices_);
    rocDecStatus decStatus = ROCDEC_SUCCESS;
    if (hipStatus != hipSuccess) {
        ERR("ERROR: hipGetDeviceCount failed!" + TOSTR(hipStatus));
        decStatus = ROCDEC_DEVICE_INVALID;
    }
    if (num_devices_ < 1) {
        ERR("ERROR: didn't find any GPU!");
        decStatus = ROCDEC_DEVICE_INVALID;
    }
    if (device_id >= num_devices_) {
        ERR("ERROR: the requested device_id is not found! ");
        decStatus = ROCDEC_DEVICE_INVALID;
    }
    hipStatus = hipSetDevice(device_id);
    if (hipStatus != hipSuccess) {
        ERR("ERROR: hipSetDevice( " + TOSTR(device_id) + ") failed! (" + TOSTR(hipStatus) + ")" );
        decStatus = ROCDEC_DEVICE_INVALID;
    }

    hipStatus = hipGetDeviceProperties(&hip_dev_prop_, device_id);
    if (hipStatus != hipSuccess) {
        ERR("ERROR: hipGetDeviceProperties for device (" +TOSTR(device_id) + " ) failed! (" + TOSTR(hipStatus) + ")" );
        decStatus = ROCDEC_DEVICE_INVALID;
    }

    hipStatus = hipStreamCreate(&hip_stream_);
    if (hipStatus != hipSuccess) {
        ERR("ERROR: hipStream_Create failed! (" + TOSTR(hipStatus) + ")");
        decStatus = ROCDEC_DEVICE_INVALID;
    }
    return decStatus;
}

void RocDecoder::initDRMnodes() {
    // build the DRM render node names
    for (int i = 0; i < num_devices_; i++) {
        drm_nodes_.push_back("/dev/dri/renderD" + std::to_string(128 + i));
    }
}