From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id 99DC510E2C4 for ; Mon, 29 May 2023 14:22:48 +0000 (UTC) From: Swati Sharma To: igt-dev@lists.freedesktop.org Date: Mon, 29 May 2023 19:52:09 +0530 Message-Id: <20230529142211.333069-1-swati2.sharma@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [igt-dev] [PATCH i-g-t v2 1/3] lib/igt_fb: round rgb->yuv conversion results List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" List-ID: Round rgb->yuv conversion results. Signed-off-by: Ville Syrjala Signed-off-by: Swati Sharma --- lib/igt_fb.c | 25 +++++++++++++++---------- 1 file changed, 15 insertions(+), 10 deletions(-) diff --git a/lib/igt_fb.c b/lib/igt_fb.c index 71a199d4..11a5d6c0 100644 --- a/lib/igt_fb.c +++ b/lib/igt_fb.c @@ -3064,11 +3064,16 @@ static void igt_fb_destroy_cairo_shadow_buffer(struct igt_fb *shadow, munmap(ptr, shadow->size); } -static uint8_t clamprgb(float val) +static uint8_t clamp8(float val) { return clamp((int)(val + 0.5f), 0, 255); } +static uint8_t clamp16(float val) +{ + return clamp((int)(val + 0.5f), 0, 65535); +} + static void read_rgb(struct igt_vec4 *rgb, const uint8_t *rgb24) { rgb->d[0] = rgb24[2]; @@ -3079,9 +3084,9 @@ static void read_rgb(struct igt_vec4 *rgb, const uint8_t *rgb24) static void write_rgb(uint8_t *rgb24, const struct igt_vec4 *rgb) { - rgb24[2] = clamprgb(rgb->d[0]); - rgb24[1] = clamprgb(rgb->d[1]); - rgb24[0] = clamprgb(rgb->d[2]); + rgb24[2] = clamp8(rgb->d[0]); + rgb24[1] = clamp8(rgb->d[1]); + rgb24[0] = clamp8(rgb->d[2]); } struct fb_convert_buf { @@ -3401,7 +3406,7 @@ static void convert_rgb24_to_yuv(struct fb_convert *cvt) rgb_tmp += bpp; - *y_tmp = yuv.d[0]; + *y_tmp = clamp8(yuv.d[0]); y_tmp += params.ay_inc; if ((i % dst_fmt->vsub) || (j % dst_fmt->hsub)) @@ -3431,8 +3436,8 @@ static void convert_rgb24_to_yuv(struct fb_convert *cvt) read_rgb(&pair_rgb, pair_rgb24); pair_yuv = igt_matrix_transform(&m, &pair_rgb); - *u_tmp = (yuv.d[1] + pair_yuv.d[1]) / 2.0f; - *v_tmp = (yuv.d[2] + pair_yuv.d[2]) / 2.0f; + *u_tmp = clamp8((yuv.d[1] + pair_yuv.d[1]) / 2.0f); + *v_tmp = clamp8((yuv.d[2] + pair_yuv.d[2]) / 2.0f); u_tmp += params.uv_inc; v_tmp += params.uv_inc; @@ -3590,7 +3595,7 @@ static void convert_float_to_yuv16(struct fb_convert *cvt, bool alpha) rgb_tmp += fpp; - *y_tmp = yuv.d[0]; + *y_tmp = clamp16(yuv.d[0]); y_tmp += params.ay_inc; if ((i % dst_fmt->vsub) || (j % dst_fmt->hsub)) @@ -3620,8 +3625,8 @@ static void convert_float_to_yuv16(struct fb_convert *cvt, bool alpha) read_rgbf(&pair_rgb, pair_float); pair_yuv = igt_matrix_transform(&m, &pair_rgb); - *u_tmp = (yuv.d[1] + pair_yuv.d[1]) / 2.0f; - *v_tmp = (yuv.d[2] + pair_yuv.d[2]) / 2.0f; + *u_tmp = clamp16((yuv.d[1] + pair_yuv.d[1]) / 2.0f); + *v_tmp = clamp16((yuv.d[2] + pair_yuv.d[2]) / 2.0f); u_tmp += params.uv_inc; v_tmp += params.uv_inc; -- 2.25.1