From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753228AbdF0QKF (ORCPT ); Tue, 27 Jun 2017 12:10:05 -0400 Received: from bhuna.collabora.co.uk ([46.235.227.227]:58449 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752136AbdF0QJN (ORCPT ); Tue, 27 Jun 2017 12:09:13 -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 5/8] [media] s5p-jpeg: Split s5p_jpeg_parse_hdr() Date: Tue, 27 Jun 2017 18:08:51 +0200 Message-Id: <1498579734-1594-6-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 This patch moves the subsampling value decoding read from the jpeg header into its own function. This new function is called s5p_jpeg_subsampling_decode() and returns true if it successfully decodes the subsampling value, false otherwise. Signed-off-by: Thierry Escande --- drivers/media/platform/s5p-jpeg/jpeg-core.c | 42 ++++++++++++++++------------- 1 file changed, 24 insertions(+), 18 deletions(-) diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.c b/drivers/media/platform/s5p-jpeg/jpeg-core.c index 1769744..0783809 100644 --- a/drivers/media/platform/s5p-jpeg/jpeg-core.c +++ b/drivers/media/platform/s5p-jpeg/jpeg-core.c @@ -1096,6 +1096,29 @@ static void skip(struct s5p_jpeg_buffer *buf, long len) get_byte(buf); } +static bool s5p_jpeg_subsampling_decode(struct s5p_jpeg_ctx *ctx, + unsigned int subsampling) +{ + switch (subsampling) { + case 0x11: + ctx->subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444; + break; + case 0x21: + ctx->subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_422; + break; + case 0x22: + ctx->subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_420; + break; + case 0x33: + ctx->subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY; + break; + default: + return false; + } + + return true; +} + static bool s5p_jpeg_parse_hdr(struct s5p_jpeg_q_data *result, unsigned long buffer, unsigned long size, struct s5p_jpeg_ctx *ctx) @@ -1207,26 +1230,9 @@ static bool s5p_jpeg_parse_hdr(struct s5p_jpeg_q_data *result, } } - if (notfound || !sos) + if (notfound || !sos || !s5p_jpeg_subsampling_decode(ctx, subsampling)) return false; - switch (subsampling) { - case 0x11: - ctx->subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444; - break; - case 0x21: - ctx->subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_422; - break; - case 0x22: - ctx->subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_420; - break; - case 0x33: - ctx->subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY; - break; - default: - return false; - } - result->w = width; result->h = height; result->sos = sos; -- 2.7.4