From patchwork Thu Dec 28 20:09:44 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tim Harvey X-Patchwork-Id: 10135807 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 63D8A60388 for ; Thu, 28 Dec 2017 20:10:36 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4938A2A1E0 for ; Thu, 28 Dec 2017 20:10:36 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 39F6A2A1F3; Thu, 28 Dec 2017 20:10:36 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_NONE,T_DKIM_INVALID autolearn=no version=3.3.1 Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DD8302A1E0 for ; Thu, 28 Dec 2017 20:10:34 +0000 (UTC) Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id 523182671A6; Thu, 28 Dec 2017 21:10:29 +0100 (CET) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id 8B6832671A8; Thu, 28 Dec 2017 21:10:27 +0100 (CET) Received: from mail-pf0-f194.google.com (mail-pf0-f194.google.com [209.85.192.194]) by alsa0.perex.cz (Postfix) with ESMTP id 077FA26719C for ; Thu, 28 Dec 2017 21:10:24 +0100 (CET) Received: by mail-pf0-f194.google.com with SMTP id e3so21313330pfi.10 for ; Thu, 28 Dec 2017 12:10:24 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gateworks-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=69slU3gnnfBKdJud0gCaR+UZV4hYZfYK3itPX1ojnyA=; b=1YjcGAhwO5EteLsWVhnp9RH2Nu+W7D8UEV7EfLouuh1llHV1ep05dw1xpbHDZ2YOX6 C6pR5quDcTZyCK4fCwhsolzBTwkmyXAAcLoNOKUOPSP/4uAXt7FDL0PinkwqjrVS6IRX cjDSosoaMOsQrTM+vhHh8XRl+cCynYC+lPPppc0r0rodem60mo0OX+qV2AXoK4Wna/Q2 tKM8yCVscQr7d19xBB05Oj7KHqLVBiEJmpD0lDdWFOCMU9uoMfUwitHBkYpgJtKo+IwG t1MXaV8mFUUPqC0RthvbUFkwTftX5iXHKMQYIssGAYJX4FiOATgM6+28CeqDnKpPfpJl bbVw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=69slU3gnnfBKdJud0gCaR+UZV4hYZfYK3itPX1ojnyA=; b=CbDhF1s1H/3mqH4AJsbLZ2+bNzvgvg1WBV7jT7Y1jlO43JLegd0pj0o0LI3Aic2S/P 9gLW6Ut+dbG4JirzjO0zV2Vkaa3Ds89SOEmyQfm3c6C+M33qJMYoh4gtSDkMR6ElVUGK lvxbS1qku4nut4xVtxA/1tds0+AVgPuk8mJBgSNOCPa4dSrGlYL8SRm4h52OvrhII5ch WBS6znKoe1rwN60dJed6+IGIn9TJoCGvywNogp6OgfIMaMpK4sLgniiu/zLZ/phzeRD+ Cn4TcVqQjf8Ud0l5B4Ezf3ujPu/WEeILKopUllAH6+A0oPe7cf4TR2LzToUekP2CFWBN E1dw== X-Gm-Message-State: AKGB3mJl4/GxA0oKUMo8LRvIS0Se3H9Bp7SjMoLE8fSy/9TecSHsau6X alKX0NITenOjARHNolH96ImClA== X-Google-Smtp-Source: ACJfBovLeue4EK7vjHtPZMFDewh/EU83Tw8kBgyl3IbLXlLDQMTsKlmp0IJgddoJQPVi2cKQJ7sDEQ== X-Received: by 10.98.162.20 with SMTP id m20mr32957759pff.6.1514491823349; Thu, 28 Dec 2017 12:10:23 -0800 (PST) Received: from tharvey.pdc.gateworks.com (68-189-91-139.static.snlo.ca.charter.com. [68.189.91.139]) by smtp.gmail.com with ESMTPSA id 6sm49241510pgf.54.2017.12.28.12.10.21 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 28 Dec 2017 12:10:22 -0800 (PST) From: Tim Harvey To: linux-media@vger.kernel.org, alsa-devel@alsa-project.org Date: Thu, 28 Dec 2017 12:09:44 -0800 Message-Id: <1514491789-8697-2-git-send-email-tharvey@gateworks.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1514491789-8697-1-git-send-email-tharvey@gateworks.com> References: <1514491789-8697-1-git-send-email-tharvey@gateworks.com> Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Hans Verkuil , Mauro Carvalho Chehab , Hans Verkuil , Philipp Zabel , Steve Longerbeam , Hans Verkuil , shawnguo@kernel.org Subject: [alsa-devel] [PATCH v6 1/6] v4l2-dv-timings: add v4l2_hdmi_colorimetry() X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP From: Hans Verkuil Add the v4l2_hdmi_colorimetry() function so we have a single function that determines the colorspace, YCbCr encoding, quantization range and transfer function from the InfoFrame data. Signed-off-by: Hans Verkuil Signed-off-by: Tim Harvey --- drivers/media/v4l2-core/v4l2-dv-timings.c | 141 ++++++++++++++++++++++++++++++ include/media/v4l2-dv-timings.h | 21 +++++ 2 files changed, 162 insertions(+) diff --git a/drivers/media/v4l2-core/v4l2-dv-timings.c b/drivers/media/v4l2-core/v4l2-dv-timings.c index 5c8c49d..4d01d52 100644 --- a/drivers/media/v4l2-core/v4l2-dv-timings.c +++ b/drivers/media/v4l2-core/v4l2-dv-timings.c @@ -27,6 +27,7 @@ #include #include #include +#include MODULE_AUTHOR("Hans Verkuil"); MODULE_DESCRIPTION("V4L2 DV Timings Helper Functions"); @@ -814,3 +815,143 @@ struct v4l2_fract v4l2_calc_aspect_ratio(u8 hor_landscape, u8 vert_portrait) return aspect; } EXPORT_SYMBOL_GPL(v4l2_calc_aspect_ratio); + +/** v4l2_hdmi_rx_colorimetry - determine HDMI colorimetry information + * based on various InfoFrames. + * @avi - the AVI InfoFrame + * @hdmi - the HDMI Vendor InfoFrame, may be NULL + * @height - the frame height + * + * Determines the HDMI colorimetry information, i.e. how the HDMI + * pixel color data should be interpreted. + * + * Note that some of the newer features (DCI-P3, HDR) are not yet + * implemented: the hdmi.h header needs to be updated to the HDMI 2.0 + * and CTA-861-G standards. + */ +struct v4l2_hdmi_colorimetry +v4l2_hdmi_rx_colorimetry(const struct hdmi_avi_infoframe *avi, + const struct hdmi_vendor_infoframe *hdmi, + unsigned int height) +{ + struct v4l2_hdmi_colorimetry c = { + V4L2_COLORSPACE_SRGB, + V4L2_YCBCR_ENC_DEFAULT, + V4L2_QUANTIZATION_FULL_RANGE, + V4L2_XFER_FUNC_SRGB + }; + bool is_ce = avi->video_code || (hdmi && hdmi->vic); + bool is_sdtv = height <= 576; + bool default_is_lim_range_rgb = avi->video_code > 1; + + switch (avi->colorspace) { + case HDMI_COLORSPACE_RGB: + /* RGB pixel encoding */ + switch (avi->colorimetry) { + case HDMI_COLORIMETRY_EXTENDED: + switch (avi->extended_colorimetry) { + case HDMI_EXTENDED_COLORIMETRY_ADOBE_RGB: + c.colorspace = V4L2_COLORSPACE_ADOBERGB; + c.xfer_func = V4L2_XFER_FUNC_ADOBERGB; + break; + case HDMI_EXTENDED_COLORIMETRY_BT2020: + c.colorspace = V4L2_COLORSPACE_BT2020; + c.xfer_func = V4L2_XFER_FUNC_709; + break; + default: + break; + } + break; + default: + break; + } + switch (avi->quantization_range) { + case HDMI_QUANTIZATION_RANGE_LIMITED: + c.quantization = V4L2_QUANTIZATION_LIM_RANGE; + break; + case HDMI_QUANTIZATION_RANGE_FULL: + break; + default: + if (default_is_lim_range_rgb) + c.quantization = V4L2_QUANTIZATION_LIM_RANGE; + break; + } + break; + + default: + /* YCbCr pixel encoding */ + c.quantization = V4L2_QUANTIZATION_LIM_RANGE; + switch (avi->colorimetry) { + case HDMI_COLORIMETRY_NONE: + if (!is_ce) + break; + if (is_sdtv) { + c.colorspace = V4L2_COLORSPACE_SMPTE170M; + c.ycbcr_enc = V4L2_YCBCR_ENC_601; + } else { + c.colorspace = V4L2_COLORSPACE_REC709; + c.ycbcr_enc = V4L2_YCBCR_ENC_709; + } + c.xfer_func = V4L2_XFER_FUNC_709; + break; + case HDMI_COLORIMETRY_ITU_601: + c.colorspace = V4L2_COLORSPACE_SMPTE170M; + c.ycbcr_enc = V4L2_YCBCR_ENC_601; + c.xfer_func = V4L2_XFER_FUNC_709; + break; + case HDMI_COLORIMETRY_ITU_709: + c.colorspace = V4L2_COLORSPACE_REC709; + c.ycbcr_enc = V4L2_YCBCR_ENC_709; + c.xfer_func = V4L2_XFER_FUNC_709; + break; + case HDMI_COLORIMETRY_EXTENDED: + switch (avi->extended_colorimetry) { + case HDMI_EXTENDED_COLORIMETRY_XV_YCC_601: + c.colorspace = V4L2_COLORSPACE_REC709; + c.ycbcr_enc = V4L2_YCBCR_ENC_XV709; + c.xfer_func = V4L2_XFER_FUNC_709; + break; + case HDMI_EXTENDED_COLORIMETRY_XV_YCC_709: + c.colorspace = V4L2_COLORSPACE_REC709; + c.ycbcr_enc = V4L2_YCBCR_ENC_XV601; + c.xfer_func = V4L2_XFER_FUNC_709; + break; + case HDMI_EXTENDED_COLORIMETRY_S_YCC_601: + c.colorspace = V4L2_COLORSPACE_SRGB; + c.ycbcr_enc = V4L2_YCBCR_ENC_601; + c.xfer_func = V4L2_XFER_FUNC_SRGB; + break; + case HDMI_EXTENDED_COLORIMETRY_ADOBE_YCC_601: + c.colorspace = V4L2_COLORSPACE_ADOBERGB; + c.ycbcr_enc = V4L2_YCBCR_ENC_601; + c.xfer_func = V4L2_XFER_FUNC_ADOBERGB; + break; + case HDMI_EXTENDED_COLORIMETRY_BT2020: + c.colorspace = V4L2_COLORSPACE_BT2020; + c.ycbcr_enc = V4L2_YCBCR_ENC_BT2020; + c.xfer_func = V4L2_XFER_FUNC_709; + break; + case HDMI_EXTENDED_COLORIMETRY_BT2020_CONST_LUM: + c.colorspace = V4L2_COLORSPACE_BT2020; + c.ycbcr_enc = V4L2_YCBCR_ENC_BT2020_CONST_LUM; + c.xfer_func = V4L2_XFER_FUNC_709; + break; + default: /* fall back to ITU_709 */ + c.colorspace = V4L2_COLORSPACE_REC709; + c.ycbcr_enc = V4L2_YCBCR_ENC_709; + c.xfer_func = V4L2_XFER_FUNC_709; + break; + } + break; + default: + break; + } + /* + * YCC Quantization Range signaling is more-or-less broken, + * let's just ignore this. + */ + break; + } + return c; +} +EXPORT_SYMBOL_GPL(v4l2_hdmi_rx_colorimetry); diff --git a/include/media/v4l2-dv-timings.h b/include/media/v4l2-dv-timings.h index 61a1889..835aef7 100644 --- a/include/media/v4l2-dv-timings.h +++ b/include/media/v4l2-dv-timings.h @@ -223,5 +223,26 @@ static inline bool can_reduce_fps(struct v4l2_bt_timings *bt) return false; } +/** + * struct v4l2_hdmi_rx_colorimetry - describes the HDMI colorimetry information + * @colorspace: enum v4l2_colorspace, the colorspace + * @ycbcr_enc: enum v4l2_ycbcr_encoding, Y'CbCr encoding + * @quantization: enum v4l2_quantization, colorspace quantization + * @xfer_func: enum v4l2_xfer_func, colorspace transfer function + */ +struct v4l2_hdmi_colorimetry { + enum v4l2_colorspace colorspace; + enum v4l2_ycbcr_encoding ycbcr_enc; + enum v4l2_quantization quantization; + enum v4l2_xfer_func xfer_func; +}; + +struct hdmi_avi_infoframe; +struct hdmi_vendor_infoframe; + +struct v4l2_hdmi_colorimetry +v4l2_hdmi_rx_colorimetry(const struct hdmi_avi_infoframe *avi, + const struct hdmi_vendor_infoframe *hdmi, + unsigned int height); #endif