From patchwork Tue Apr 26 12:57:36 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Dufresne X-Patchwork-Id: 12827084 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 40B34C433F5 for ; Tue, 26 Apr 2022 12:58:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350430AbiDZNB4 (ORCPT ); Tue, 26 Apr 2022 09:01:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46330 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350320AbiDZNBZ (ORCPT ); Tue, 26 Apr 2022 09:01:25 -0400 Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [46.235.227.227]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8504517B399; Tue, 26 Apr 2022 05:58:17 -0700 (PDT) Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: nicolas) with ESMTPSA id AE6D01F4398F DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1650977896; bh=952H20dFKMDGDG2AyTcdBsEiBoEPkmvH/b/LrPIdq6E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ivwEH58V6mC1MYYJ4WS3Fo3nzVJjOsapx5RN+72kpIWPAA/9mJYTv9AvPV9SoCU7t vbomIyuebGGZ7qsih9ITtUvNwe2/rUDE/BOeGdjS+pJfehE7S/ALAOB8bJUK0Gv7xo 9C6kenOhkDskpU48m3KexD7pQji4KmqfsOIPpmHe5BTJK40h1c4r8irPIQOwN30SAQ b9/mJSD6FW73vkcPvfy+AhkzcdY28j43lVhlDIYmQM13LDyBvpeuJBN+lIsbPuF/JR QW7jhCWN5Pe+sNbPaLDcfY/YILrMSWKP9HN5+1CJSC98Zxfj/MyuYWDrovf+ACb09c AtvB0I6M706bw== From: Nicolas Dufresne To: Mauro Carvalho Chehab Cc: nicolas@ndufresne.ca, linux-media@vger.kernel.org, Sebastian Fricke , linux-kernel@vger.kernel.org Subject: [PATCH v4 10/24] media: h264: Sort p/b reflist using frame_num Date: Tue, 26 Apr 2022 08:57:36 -0400 Message-Id: <20220426125751.108293-11-nicolas.dufresne@collabora.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220426125751.108293-1-nicolas.dufresne@collabora.com> References: <20220426125751.108293-1-nicolas.dufresne@collabora.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org In the reference list builder, frame_num refers to FrameNumWrap in the spec, which is the same as the pic_num for frame decoding. The same applies for long_term_pic_num and long_term_frame_idx. Sort all type of references by frame_num so the sort can be reused for fields reflist were the sorting is done using frame_num instead. In short, pic_num is never actually used for building reference lists. Signed-off-by: Nicolas Dufresne Reviewed-by: Sebastian Fricke --- drivers/media/v4l2-core/v4l2-h264.c | 23 +++++++++++++---------- include/media/v4l2-h264.h | 2 -- 2 files changed, 13 insertions(+), 12 deletions(-) diff --git a/drivers/media/v4l2-core/v4l2-h264.c b/drivers/media/v4l2-core/v4l2-h264.c index 853f54e0fe67..fe215035d9e8 100644 --- a/drivers/media/v4l2-core/v4l2-h264.c +++ b/drivers/media/v4l2-core/v4l2-h264.c @@ -56,7 +56,6 @@ v4l2_h264_init_reflist_builder(struct v4l2_h264_reflist_builder *b, if (!(dpb[i].flags & V4L2_H264_DPB_ENTRY_FLAG_ACTIVE)) continue; - b->refs[i].pic_num = dpb[i].pic_num; if (dpb[i].flags & V4L2_H264_DPB_ENTRY_FLAG_LONG_TERM) b->refs[i].longterm = true; @@ -145,15 +144,19 @@ static int v4l2_h264_p_ref_list_cmp(const void *ptra, const void *ptrb, } /* - * Short term pics in descending pic num order, long term ones in - * ascending order. + * For frames, short term pics are in descending pic num order and long + * term ones in ascending order. For fields, the same direction is used + * but with frame_num (wrapped). For frames, the value of pic_num and + * frame_num are the same (see formula (8-28) and (8-29)). For this + * reason we can use frame_num only and share this function between + * frames and fields reflist. */ if (!builder->refs[idxa].longterm) return builder->refs[idxb].frame_num < builder->refs[idxa].frame_num ? -1 : 1; - return builder->refs[idxa].pic_num < builder->refs[idxb].pic_num ? + return builder->refs[idxa].frame_num < builder->refs[idxb].frame_num ? -1 : 1; } @@ -179,10 +182,10 @@ static int v4l2_h264_b0_ref_list_cmp(const void *ptra, const void *ptrb, return 1; } - /* Long term pics in ascending pic num order. */ + /* Long term pics in ascending frame num order. */ if (builder->refs[idxa].longterm) - return builder->refs[idxa].pic_num < - builder->refs[idxb].pic_num ? + return builder->refs[idxa].frame_num < + builder->refs[idxb].frame_num ? -1 : 1; poca = v4l2_h264_get_poc(builder, ptra); @@ -224,10 +227,10 @@ static int v4l2_h264_b1_ref_list_cmp(const void *ptra, const void *ptrb, return 1; } - /* Long term pics in ascending pic num order. */ + /* Long term pics in ascending frame num order. */ if (builder->refs[idxa].longterm) - return builder->refs[idxa].pic_num < - builder->refs[idxb].pic_num ? + return builder->refs[idxa].frame_num < + builder->refs[idxb].frame_num ? -1 : 1; poca = v4l2_h264_get_poc(builder, ptra); diff --git a/include/media/v4l2-h264.h b/include/media/v4l2-h264.h index 4cef717b3f18..0d9eaa956123 100644 --- a/include/media/v4l2-h264.h +++ b/include/media/v4l2-h264.h @@ -18,7 +18,6 @@ * @refs.top_field_order_cnt: top field order count * @refs.bottom_field_order_cnt: bottom field order count * @refs.frame_num: reference frame number - * @refs.pic_num: reference picture number * @refs.longterm: set to true for a long term reference * @refs: array of references * @cur_pic_order_count: picture order count of the frame being decoded @@ -36,7 +35,6 @@ struct v4l2_h264_reflist_builder { s32 top_field_order_cnt; s32 bottom_field_order_cnt; int frame_num; - u32 pic_num; u16 longterm : 1; } refs[V4L2_H264_NUM_DPB_ENTRIES];