Function rkmpp_init_decoder

libavcodec/rkmppdec.c:153–261

}

static av_cold int rkmpp_init_decoder(AVCodecContext *avctx)
{
    RKMPPDecodeContext *rk_context = avctx->priv_data;
    RKMPPDecoder *decoder = NULL;
    MppCodingType codectype = MPP_VIDEO_CodingUnused;
    int ret;
    RK_S64 paramS64;
    RK_S32 paramS32;

    avctx->pix_fmt = AV_PIX_FMT_DRM_PRIME;

    // create a decoder and a ref to it
    decoder = av_refstruct_alloc_ext(sizeof(*decoder), 0,
                                     NULL, rkmpp_release_decoder);
    if (!decoder) {
        ret = AVERROR(ENOMEM);
        goto fail;
    }
    rk_context->decoder = decoder;

    av_log(avctx, AV_LOG_DEBUG, "Initializing RKMPP decoder.\n");

    codectype = rkmpp_get_codingtype(avctx);
    if (codectype == MPP_VIDEO_CodingUnused) {
        av_log(avctx, AV_LOG_ERROR, "Unknown codec type (%d).\n", avctx->codec_id);
        ret = AVERROR_UNKNOWN;
        goto fail;
    }

    ret = mpp_check_support_format(MPP_CTX_DEC, codectype);
    if (ret != MPP_OK) {
        av_log(avctx, AV_LOG_ERROR, "Codec type (%d) unsupported by MPP\n", avctx->codec_id);
        ret = AVERROR_UNKNOWN;
        goto fail;
    }

    // Create the MPP context
    ret = mpp_create(&decoder->ctx, &decoder->mpi);
    if (ret != MPP_OK) {
        av_log(avctx, AV_LOG_ERROR, "Failed to create MPP context (code = %d).\n", ret);
        ret = AVERROR_UNKNOWN;
        goto fail;
    }

    // initialize mpp
    ret = mpp_init(decoder->ctx, MPP_CTX_DEC, codectype);
    if (ret != MPP_OK) {
        av_log(avctx, AV_LOG_ERROR, "Failed to initialize MPP context (code = %d).\n", ret);
        ret = AVERROR_UNKNOWN;
        goto fail;
    }

    // make decode calls blocking with a timeout
    paramS32 = MPP_POLL_BLOCK;
    ret = decoder->mpi->control(decoder->ctx, MPP_SET_OUTPUT_BLOCK, &paramS32);
    if (ret != MPP_OK) {
        av_log(avctx, AV_LOG_ERROR, "Failed to set blocking mode on MPI (code = %d).\n", ret);
        ret = AVERROR_UNKNOWN;