From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1768362AbcHROtJ (ORCPT ); Thu, 18 Aug 2016 10:49:09 -0400 Received: from mail-lf0-f65.google.com ([209.85.215.65]:33846 "EHLO mail-lf0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1949100AbcHROsx (ORCPT ); Thu, 18 Aug 2016 10:48:53 -0400 From: Ricardo Ribalda Delgado To: Mauro Carvalho Chehab , Hans Verkuil , Markus Heiser , Laurent Pinchart , Helen Mae Koike Fornazier , Antti Palosaari , Philipp Zabel , Shuah Khan , linux-kernel@vger.kernel.org, linux-media@vger.kernel.org Cc: Ricardo Ribalda Delgado Subject: [PATCH v5 08/12] [media] vivid: Fix YUV555 and YUV565 handling Date: Thu, 18 Aug 2016 16:33:34 +0200 Message-Id: <1471530818-7928-9-git-send-email-ricardo.ribalda@gmail.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1471530818-7928-1-git-send-email-ricardo.ribalda@gmail.com> References: <1471530818-7928-1-git-send-email-ricardo.ribalda@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org precalculate_color() had a optimization that avoided duplicated conversion for YUV formats. This optimization did not take into consideration YUV444, YUV555, YUV565 or limited range quantization. This patch keeps the optimization, but fixes the wrong handling. Signed-off-by: Ricardo Ribalda Delgado --- drivers/media/common/v4l2-tpg/v4l2-tpg-core.c | 19 ++++++++----------- 1 file changed, 8 insertions(+), 11 deletions(-) diff --git a/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c b/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c index 920c8495f3dd..7364ced09abc 100644 --- a/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c +++ b/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c @@ -795,6 +795,8 @@ static void precalculate_color(struct tpg_data *tpg, int k) int r = tpg_colors[col].r; int g = tpg_colors[col].g; int b = tpg_colors[col].b; + int y, cb, cr; + bool ycbcr_valid = false; if (k == TPG_COLOR_TEXTBG) { col = tpg_get_textbg_color(tpg); @@ -871,7 +873,6 @@ static void precalculate_color(struct tpg_data *tpg, int k) tpg->saturation != 128 || tpg->hue) && tpg->color_enc != TGP_COLOR_ENC_LUMA) { /* Implement these operations */ - int y, cb, cr; int tmp_cb, tmp_cr; /* First convert to YCbCr */ @@ -888,13 +889,10 @@ static void precalculate_color(struct tpg_data *tpg, int k) cb = (128 << 4) + (tmp_cb * tpg->contrast * tpg->saturation) / (128 * 128); cr = (128 << 4) + (tmp_cr * tpg->contrast * tpg->saturation) / (128 * 128); - if (tpg->color_enc == TGP_COLOR_ENC_YCBCR) { - tpg->colors[k][0] = clamp(y >> 4, 1, 254); - tpg->colors[k][1] = clamp(cb >> 4, 1, 254); - tpg->colors[k][2] = clamp(cr >> 4, 1, 254); - return; - } - ycbcr_to_color(tpg, y, cb, cr, &r, &g, &b); + if (tpg->color_enc == TGP_COLOR_ENC_YCBCR) + ycbcr_valid = true; + else + ycbcr_to_color(tpg, y, cb, cr, &r, &g, &b); } else if ((tpg->brightness != 128 || tpg->contrast != 128) && tpg->color_enc == TGP_COLOR_ENC_LUMA) { r = (16 << 4) + ((r - (16 << 4)) * tpg->contrast) / 128; @@ -915,9 +913,8 @@ static void precalculate_color(struct tpg_data *tpg, int k) case TGP_COLOR_ENC_YCBCR: { /* Convert to YCbCr */ - int y, cb, cr; - - color_to_ycbcr(tpg, r, g, b, &y, &cb, &cr); + if (!ycbcr_valid) + color_to_ycbcr(tpg, r, g, b, &y, &cb, &cr); if (tpg->real_quantization == V4L2_QUANTIZATION_LIM_RANGE) { y = clamp(y, 16 << 4, 235 << 4); -- 2.8.1