From patchwork Mon Mar 28 19:59:20 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Dufresne X-Patchwork-Id: 12794180 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5F219C433FE for ; Mon, 28 Mar 2022 20:00:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344183AbiC1UB4 (ORCPT ); Mon, 28 Mar 2022 16:01:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55916 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344131AbiC1UBn (ORCPT ); Mon, 28 Mar 2022 16:01:43 -0400 Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e3e3]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A036D3A730; Mon, 28 Mar 2022 13:00:01 -0700 (PDT) Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: nicolas) with ESMTPSA id 4EFD31F4386D DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1648497600; bh=vByQV7rCpRfvNGtGYzI2vxESufjfaYFSOaqSafHc0Zo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AD3UX9iFdiyFU1ERpNORrTzFj7a34p+IuYkWRoz3FspWwoYs2DJFs5h8TYtLeCWrA 156jZRkmHbeiPv4tTDwgOSlpaNM9OYSQnahvWiidfWyncGtPrapG/uBhO/lr6/JofG wp99iuELgfA+prTZQsQ5aJtzIe7MoMkC8XuUkc+ig0v+UY4YSp7H09ZRvA+DqdvHG4 VuNJuLL25t2S2wSHYEmSazuRRyz0NYGS5T4fkm1V7Sz4S1jn23mSg9Yt7l/GEecuzL jN2yoKyFbE12FNITrbV5A9Zvl30RVGInPXI5ECGqG3EavwYtiYh2kHZua7lo8FCQTT Aw3UXC/4mhaOg== From: Nicolas Dufresne To: Mauro Carvalho Chehab Cc: kernel@collabora.com, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v1 08/24] media: v4l2: Reorder field reflist Date: Mon, 28 Mar 2022 15:59:20 -0400 Message-Id: <20220328195936.82552-9-nicolas.dufresne@collabora.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220328195936.82552-1-nicolas.dufresne@collabora.com> References: <20220328195936.82552-1-nicolas.dufresne@collabora.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org As per spec, the field refslist requires interleaving top and bottom field in a specific way that does not fit inside the sort operation. Reorder in-place the references so that their parity sart with the same parity as the current picture and do that for both short and longterm references separately. Signed-off-by: Nicolas Dufresne Reviewed-by: Sebastian Fricke --- drivers/media/v4l2-core/v4l2-h264.c | 45 +++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) diff --git a/drivers/media/v4l2-core/v4l2-h264.c b/drivers/media/v4l2-core/v4l2-h264.c index c3fad382882d..2f7ee8d5479f 100644 --- a/drivers/media/v4l2-core/v4l2-h264.c +++ b/drivers/media/v4l2-core/v4l2-h264.c @@ -243,6 +243,43 @@ static int v4l2_h264_b1_ref_list_cmp(const void *ptra, const void *ptrb, return poca < pocb ? -1 : 1; } +/* + * The references need to be reorder so that reference are alternating between + * top and bottom ref starting with the current picture parity. This have to be + * done for short term and long term references separately. + */ +static void reorder_field_reflist(const struct v4l2_h264_reflist_builder *b, + struct v4l2_h264_reference *reflist) +{ + struct v4l2_h264_reference tmplist[V4L2_H264_REF_LIST_LEN]; + u8 lt, i = 0, j = 0, k = 0; + + memcpy(tmplist, reflist, sizeof(tmplist[0]) * b->num_valid); + + for (lt = 0; lt <= 1; lt++) { + do { + for (; i < b->num_valid && b->refs[tmplist[i].index].longterm == lt; i++) { + if (tmplist[i].fields == b->cur_pic_fields) { + reflist[k] = tmplist[i]; + k++; + i++; + break; + } + } + + for (; j < b->num_valid && b->refs[tmplist[j].index].longterm == lt; j++) { + if (tmplist[j].fields != b->cur_pic_fields) { + reflist[k] = tmplist[j]; + k++; + j++; + break; + } + } + } while ((i < b->num_valid && b->refs[tmplist[i].index].longterm == lt) || + (j < b->num_valid && b->refs[tmplist[j].index].longterm == lt)); + } +} + static char ref_type_to_char (u8 ref_type) { switch (ref_type) { @@ -345,6 +382,9 @@ v4l2_h264_build_p_ref_list(const struct v4l2_h264_reflist_builder *builder, sort_r(reflist, builder->num_valid, sizeof(*reflist), v4l2_h264_p_ref_list_cmp, NULL, builder); + if (builder->cur_pic_fields != V4L2_H264_FRAME_REF) + reorder_field_reflist(builder, reflist); + print_ref_list_p(builder, reflist); } EXPORT_SYMBOL_GPL(v4l2_h264_build_p_ref_list); @@ -378,6 +418,11 @@ v4l2_h264_build_b_ref_lists(const struct v4l2_h264_reflist_builder *builder, sort_r(b1_reflist, builder->num_valid, sizeof(*b1_reflist), v4l2_h264_b1_ref_list_cmp, NULL, builder); + if (builder->cur_pic_fields != V4L2_H264_FRAME_REF) { + reorder_field_reflist(builder, b0_reflist); + reorder_field_reflist(builder, b1_reflist); + } + if (builder->num_valid > 1 && !memcmp(b1_reflist, b0_reflist, builder->num_valid)) swap(b1_reflist[0], b1_reflist[1]);