From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753188AbdF0QJ4 (ORCPT ); Tue, 27 Jun 2017 12:09:56 -0400 Received: from bhuna.collabora.co.uk ([46.235.227.227]:58454 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752666AbdF0QJJ (ORCPT ); Tue, 27 Jun 2017 12:09:09 -0400 From: Thierry Escande To: Andrzej Pietrasiewicz , Jacek Anaszewski , Mauro Carvalho Chehab Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 6/8] [media] s5p-jpeg: Decode 4:1:1 chroma subsampling format Date: Tue, 27 Jun 2017 18:08:52 +0200 Message-Id: <1498579734-1594-7-git-send-email-thierry.escande@collabora.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1498579734-1594-1-git-send-email-thierry.escande@collabora.com> References: <1498579734-1594-1-git-send-email-thierry.escande@collabora.com> MIME-Version: 1.0 Content-Type: text/plain; charset = "utf-8" Content-Transfert-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Tony K Nadackal This patch adds support for decoding 4:1:1 chroma subsampling in the jpeg header parsing function. Signed-off-by: Tony K Nadackal Signed-off-by: Thierry Escande --- drivers/media/platform/s5p-jpeg/jpeg-core.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.c b/drivers/media/platform/s5p-jpeg/jpeg-core.c index 0783809..cca0fb8 100644 --- a/drivers/media/platform/s5p-jpeg/jpeg-core.c +++ b/drivers/media/platform/s5p-jpeg/jpeg-core.c @@ -1099,6 +1099,8 @@ static void skip(struct s5p_jpeg_buffer *buf, long len) static bool s5p_jpeg_subsampling_decode(struct s5p_jpeg_ctx *ctx, unsigned int subsampling) { + unsigned int version; + switch (subsampling) { case 0x11: ctx->subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444; @@ -1112,6 +1114,19 @@ static bool s5p_jpeg_subsampling_decode(struct s5p_jpeg_ctx *ctx, case 0x33: ctx->subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY; break; + case 0x41: + /* + * 4:1:1 subsampling only supported by 3250, 5420, and 5433 + * variants + */ + version = ctx->jpeg->variant->version; + if (version != SJPEG_EXYNOS3250 && + version != SJPEG_EXYNOS5420 && + version != SJPEG_EXYNOS5433) + return false; + + ctx->subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_411; + break; default: return false; } -- 2.7.4