From patchwork Tue May 15 13:16:41 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gianluca Gennari X-Patchwork-Id: 11265 Received: from mail.tu-berlin.de ([130.149.7.33]) by www.linuxtv.org with esmtp (Exim 4.72) (envelope-from ) id 1SUHcs-0007kV-Ed for patchwork@linuxtv.org; Tue, 15 May 2012 15:17:18 +0200 X-tubIT-Incoming-IP: 209.132.180.67 Received: from vger.kernel.org ([209.132.180.67]) by mail.tu-berlin.de (exim-4.75/mailfrontend-2) with esmtp for id 1SUHcr-00074c-IU; Tue, 15 May 2012 15:17:18 +0200 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932807Ab2EONRO (ORCPT ); Tue, 15 May 2012 09:17:14 -0400 Received: from mail-wi0-f172.google.com ([209.85.212.172]:38520 "EHLO mail-wi0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932282Ab2EONRN (ORCPT ); Tue, 15 May 2012 09:17:13 -0400 Received: by wibhj8 with SMTP id hj8so2791199wib.1 for ; Tue, 15 May 2012 06:17:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:x-mailer; bh=pL9oPKZxov79R3qgkwRNw0kMotYJz90JkcUOzBEkldA=; b=u2EVFwlzlaRmRYP+Qr2VdqSikdsxBz2i8axCiuKIEZPCQbUH1LrBxNhZi+pykGstgb WtSZzKhoruJj6ys3BQGm1ax8xBKzIMUNhR4pIHJVJMibaPFY/4RttZAPo0QAcg41KYDu HbG1ZBCzbH6Y2YyW+629bTt2fBsruWlV1kV7LGVOE5vze2cdaZXLk2aoBu4WhHxdciaj fJkARspYNmaOQN5JnoagD7Wj5frXpNfWuZC5/p94/ingjthZnOMtnBxi9CoqLyYObKE/ vYb5VyZuHQodMu2NpYussvNVdpW4tRLYE3amoBUxyp5wSaWhOgdFcT0JuBd1G27bUctd CaSA== Received: by 10.180.107.101 with SMTP id hb5mr30292125wib.7.1337087832300; Tue, 15 May 2012 06:17:12 -0700 (PDT) Received: from localhost.localdomain (93-50-34-119.ip150.fastwebnet.it. [93.50.34.119]) by mx.google.com with ESMTPS id ga8sm6183613wib.5.2012.05.15.06.17.04 (version=TLSv1/SSLv3 cipher=OTHER); Tue, 15 May 2012 06:17:11 -0700 (PDT) From: Gianluca Gennari To: linux-media@vger.kernel.org, mchehab@redhat.com, hans.verkuil@cisco.com Cc: Gianluca Gennari Subject: [PATCH] media_build: add fixp-arith.h in linux/include/linux Date: Tue, 15 May 2012 15:16:41 +0200 Message-Id: <1337087801-31527-1-git-send-email-gennarone@gmail.com> X-Mailer: git-send-email 1.7.0.4 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-PMX-Version: 5.6.1.2065439, Antispam-Engine: 2.7.2.376379, Antispam-Data: 2012.5.15.130317 X-PMX-Spam: Gauge=IIIIIIII, Probability=8%, Report=' FORGED_FROM_GMAIL 0.1, HTML_00_01 0.05, HTML_00_10 0.05, BODY_SIZE_3000_3999 0, BODY_SIZE_5000_LESS 0, BODY_SIZE_7000_LESS 0, URI_ENDS_IN_HTML 0, __ANY_URI 0, __C230066_P2 0, __CP_URI_IN_BODY 0, __FRAUD_BODY_WEBMAIL 0, __FRAUD_WEBMAIL 0, __FRAUD_WEBMAIL_FROM 0, __FROM_GMAIL 0, __HAS_MSGID 0, __HAS_X_MAILER 0, __HAS_X_MAILING_LIST 0, __MIME_TEXT_ONLY 0, __PHISH_SPEAR_STRUCTURE_1 0, __SANE_MSGID 0, __STOCK_PHRASE_7 0, __TO_MALFORMED_2 0, __TO_NO_NAME 0, __URI_NO_WWW 0, __URI_NS ' This patch: http://patchwork.linuxtv.org/patch/10824/ moved the file fixp-arith.h from drivers/input/ to include/linux/ . To make this file available to old kernels, we must include it in the media_build package. The version included here comes from kernel 3.4-rc7. This patch corrects the following build error: media_build/v4l/ov534.c:38:30: error: linux/fixp-arith.h: No such file or directory media_build/v4l/ov534.c: In function 'sethue': media_build/v4l/ov534.c:1000: error: implicit declaration of function 'fixp_sin' media_build/v4l/ov534.c:1001: error: implicit declaration of function 'fixp_cos' Tested on kernel 2.6.32-41-generic-pae (Ubuntu 10.04). Signed-off-by: Gianluca Gennari + */ + +#include + +/* The type representing fixed-point values */ +typedef s16 fixp_t; + +#define FRAC_N 8 +#define FRAC_MASK ((1< 123.0 */ +static inline fixp_t fixp_new(s16 a) +{ + return a< -1.0 + 0x8000 -> 1.0 + 0x0000 -> 0.0 +*/ +static inline fixp_t fixp_new16(s16 a) +{ + return ((s32)a)>>(16-FRAC_N); +} + +static inline fixp_t fixp_cos(unsigned int degrees) +{ + int quadrant = (degrees / 90) & 3; + unsigned int i = degrees % 90; + + if (quadrant == 1 || quadrant == 3) + i = 90 - i; + + i >>= 1; + + return (quadrant == 1 || quadrant == 2)? -cos_table[i] : cos_table[i]; +} + +static inline fixp_t fixp_sin(unsigned int degrees) +{ + return -fixp_cos(degrees + 90); +} + +static inline fixp_t fixp_mult(fixp_t a, fixp_t b) +{ + return ((s32)(a*b))>>FRAC_N; +} + +#endif