Function hw_base_encode_clear_old

libavcodec/hw_base_encode.c:358–394

}

static int hw_base_encode_clear_old(AVCodecContext *avctx, FFHWBaseEncodeContext *ctx)
{
    FFHWBaseEncodePicture *pic, *prev, *next;

    av_assert0(ctx->pic_start);

    // Remove direct references once each picture is complete.
    for (pic = ctx->pic_start; pic; pic = pic->next) {
        if (pic->encode_complete && pic->next)
            hw_base_encode_remove_refs(pic, 0);
    }

    // Remove indirect references once a picture has no direct references.
    for (pic = ctx->pic_start; pic; pic = pic->next) {
        if (pic->encode_complete && pic->ref_count[0] == 0)
            hw_base_encode_remove_refs(pic, 1);
    }

    // Clear out all complete pictures with no remaining references.
    prev = NULL;
    for (pic = ctx->pic_start; pic; pic = next) {
        next = pic->next;
        if (pic->encode_complete && pic->ref_count[1] == 0) {
            av_assert0(pic->ref_removed[0] && pic->ref_removed[1]);
            if (prev)
                prev->next = next;
            else
                ctx->pic_start = next;
            ctx->op->free(avctx, pic);
            base_encode_pic_free(pic);
        } else {
            prev = pic;
        }
    }

    return 0;
}

static int hw_base_encode_check_frame(FFHWBaseEncodeContext *ctx,
                                      const AVFrame *frame)