Function ff_hwaccel_frame_priv_alloc

libavcodec/decode.c:2299–2326

}

int ff_hwaccel_frame_priv_alloc(AVCodecContext *avctx, void **hwaccel_picture_private)
{
    const FFHWAccel *hwaccel = ffhwaccel(avctx->hwaccel);

    if (!hwaccel || !hwaccel->frame_priv_data_size)
        return 0;

    av_assert0(!*hwaccel_picture_private);

    if (hwaccel->free_frame_priv) {
        AVHWFramesContext *frames_ctx;

        if (!avctx->hw_frames_ctx)
            return AVERROR(EINVAL);

        frames_ctx = (AVHWFramesContext *) avctx->hw_frames_ctx->data;
        *hwaccel_picture_private = av_refstruct_alloc_ext(hwaccel->frame_priv_data_size, 0,
                                                          frames_ctx->device_ctx,
                                                          hwaccel->free_frame_priv);
    } else {
        *hwaccel_picture_private = av_refstruct_allocz(hwaccel->frame_priv_data_size);
    }

    if (!*hwaccel_picture_private)
        return AVERROR(ENOMEM);

    return 0;
}

av_cold void ff_decode_flush_buffers(AVCodecContext *avctx)
{