From mboxrd@z Thu Jan 1 00:00:00 1970 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 81299C4332F for ; Fri, 24 Dec 2021 08:43:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1352079AbhLXIn2 (ORCPT ); Fri, 24 Dec 2021 03:43:28 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32954 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1352046AbhLXIn1 (ORCPT ); Fri, 24 Dec 2021 03:43:27 -0500 Received: from mail-pg1-x52c.google.com (mail-pg1-x52c.google.com [IPv6:2607:f8b0:4864:20::52c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CC6D4C061757 for ; Fri, 24 Dec 2021 00:43:26 -0800 (PST) Received: by mail-pg1-x52c.google.com with SMTP id m15so7112420pgu.11 for ; Fri, 24 Dec 2021 00:43:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=V96MCrbuR3Cmo1QVQzxpqsi+EQJPA/QIWspHhrAknFM=; b=ReCdFld7cLRApbe6SnnREZYfmIU0RcbRDBmmnqe94U4ghsTmrWoWtRGyuVcdLv0Cvh koAodEaY+50Vg+QPhpVBofstR7JJJCw53QBki/gDLSV6kp56h4qKqd+HPN+9B5mLWbP8 sda5TpVrDtXTGEzwCEUWPd15aRIhv+frOnbD0= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=V96MCrbuR3Cmo1QVQzxpqsi+EQJPA/QIWspHhrAknFM=; b=VPd/u9Dp7TyOVu91acrEqrYimEGBJAwpSfMpjUArP8fElJwWZqrOT5cc5DXzdlycAQ h1eFFvXTqQg7u04ufD1Xd/H+bfiAkI83DiEIWfjzgzBsFt7xyZn8WWBDXynCkvIBAJQa jdQxTZqUhOVDvzgLnnnTZ96qE94VnE/9TG5SkQjqsQDNxv4L4WCmHf8mVIfHGYPn3Qjg Vjp0zPeVdawPItJRo2K10QZru+G1MHGdAAeQScxO7D+FjrkrFrK445iAwWpa08kxO/Xt hc9lf1pFNXB1SVY0rSRW1PITZM2o0Vz2mu+L38Tx7YN1n8c7iJTSu8tykmYfBrTtN/Wi ejRA== X-Gm-Message-State: AOAM533KKczL3L8JInpuCMKDnLDAqIWmkNeKSKv4nTDXONQTwrer1Pon xGHYOotY1oG1Ixik1Whawk+wIA== X-Google-Smtp-Source: ABdhPJycSb22GWmoTlWD+t4pDQjqs8Efzd6cRWdANOKAxMm8MlvU3BBpMjxjkO9FubRD/Q7BSmpdaA== X-Received: by 2002:a63:6ac9:: with SMTP id f192mr5281162pgc.79.1640335406365; Fri, 24 Dec 2021 00:43:26 -0800 (PST) Received: from wenstp920.tpe.corp.google.com ([2401:fa00:1:10:fd40:cbd0:c42a:3c26]) by smtp.gmail.com with ESMTPSA id p13sm436369pgl.23.2021.12.24.00.43.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 24 Dec 2021 00:43:26 -0800 (PST) From: Chen-Yu Tsai To: Ezequiel Garcia , Philipp Zabel , Mauro Carvalho Chehab , Hans Verkuil , Greg Kroah-Hartman Cc: Tomasz Figa , Chen-Yu Tsai , linux-media@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [PATCH RFT 4/7] media: hantro: jpeg: Add JFIF APP0 segment to JPEG encoder output Date: Fri, 24 Dec 2021 16:42:45 +0800 Message-Id: <20211224084248.3070568-5-wenst@chromium.org> X-Mailer: git-send-email 2.34.1.448.ga2b2bfdf31-goog In-Reply-To: <20211224084248.3070568-1-wenst@chromium.org> References: <20211224084248.3070568-1-wenst@chromium.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org While the V4L2_PIX_FMT_JPEG format doesn't specify any requirements for the APP0 or APP1 segments, it would be nice if the output is JFIF compliant. While some programs can read JPEG streams that aren't, some guess work is involved. Add the standard JFIF APP0 segment to the JPEG header, so that the JPEG encoder output is JFIF compliant. Signed-off-by: Chen-Yu Tsai --- drivers/staging/media/hantro/hantro_jpeg.c | 21 +++++++++++++-------- drivers/staging/media/hantro/hantro_jpeg.h | 2 +- 2 files changed, 14 insertions(+), 9 deletions(-) diff --git a/drivers/staging/media/hantro/hantro_jpeg.c b/drivers/staging/media/hantro/hantro_jpeg.c index df62fbdff7c9..7d4018bd6876 100644 --- a/drivers/staging/media/hantro/hantro_jpeg.c +++ b/drivers/staging/media/hantro/hantro_jpeg.c @@ -12,15 +12,15 @@ #include "hantro_jpeg.h" #include "hantro.h" -#define LUMA_QUANT_OFF 7 -#define CHROMA_QUANT_OFF 72 -#define HEIGHT_OFF 141 -#define WIDTH_OFF 143 +#define LUMA_QUANT_OFF 25 +#define CHROMA_QUANT_OFF 90 +#define HEIGHT_OFF 159 +#define WIDTH_OFF 161 -#define HUFF_LUMA_DC_OFF 160 -#define HUFF_LUMA_AC_OFF 193 -#define HUFF_CHROMA_DC_OFF 376 -#define HUFF_CHROMA_AC_OFF 409 +#define HUFF_LUMA_DC_OFF 178 +#define HUFF_LUMA_AC_OFF 211 +#define HUFF_CHROMA_DC_OFF 394 +#define HUFF_CHROMA_AC_OFF 427 /* Default tables from JPEG ITU-T.81 * (ISO/IEC 10918-1) Annex K, tables K.1 and K.2 @@ -144,6 +144,11 @@ static const unsigned char hantro_jpeg_header[JPEG_HEADER_SIZE] = { /* SOI */ 0xff, 0xd8, + /* JFIF-APP0 */ + 0xff, 0xe0, 0x00, 0x10, 0x4a, 0x46, 0x49, 0x46, + 0x00, 0x01, 0x01, 0x00, 0x00, 0x01, 0x00, 0x01, + 0x00, 0x00, + /* DQT */ 0xff, 0xdb, 0x00, 0x84, diff --git a/drivers/staging/media/hantro/hantro_jpeg.h b/drivers/staging/media/hantro/hantro_jpeg.h index 035ab25b803f..f33c492134e4 100644 --- a/drivers/staging/media/hantro/hantro_jpeg.h +++ b/drivers/staging/media/hantro/hantro_jpeg.h @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0+ */ -#define JPEG_HEADER_SIZE 601 +#define JPEG_HEADER_SIZE 619 #define JPEG_QUANT_SIZE 64 struct hantro_jpeg_ctx { -- 2.34.1.448.ga2b2bfdf31-goog