Function nvdec_init_hwframes

libavcodec/nvdec.c:288–325

}

static int nvdec_init_hwframes(AVCodecContext *avctx, AVBufferRef **out_frames_ref, int dummy)
{
    AVHWFramesContext *frames_ctx;
    int ret;

    ret = avcodec_get_hw_frames_parameters(avctx,
                                           avctx->hw_device_ctx,
                                           avctx->hwaccel->pix_fmt,
                                           out_frames_ref);
    if (ret < 0)
        return ret;

    frames_ctx = (AVHWFramesContext*)(*out_frames_ref)->data;

    if (dummy) {
        // Copied from ff_decode_get_hw_frames_ctx for compatibility
        frames_ctx->initial_pool_size += 3;

        frames_ctx->free = nvdec_free_dummy;
        frames_ctx->pool = av_buffer_pool_init(0, nvdec_alloc_dummy);

        if (!frames_ctx->pool) {
            av_buffer_unref(out_frames_ref);
            return AVERROR(ENOMEM);
        }
    } else {
        // This is normally not used to actually allocate frames from
        frames_ctx->initial_pool_size = 0;
    }

    ret = av_hwframe_ctx_init(*out_frames_ref);
    if (ret < 0) {
        av_buffer_unref(out_frames_ref);
        return ret;
    }

    return 0;
}

int ff_nvdec_decode_init(AVCodecContext *avctx)
{