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[88.192.28.243]) by smtp.gmail.com with ESMTPSA id f9-20020a056512360900b0047f6c98e243sm2994711lfs.102.2022.07.13.13.47.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 13 Jul 2022 13:47:18 -0700 (PDT) From: =?utf-8?q?Martin_Storsj=C3=B6?= To: ffmpeg-devel@ffmpeg.org Date: Wed, 13 Jul 2022 23:47:16 +0300 Message-Id: <20220713204716.3114529-2-martin@martin.st> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220713204716.3114529-1-martin@martin.st> References: <20220713204716.3114529-1-martin@martin.st> MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH 2/2] RFC: checkasm: motion: Test different h parameters X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Cc: Michael Niedermayer , Jonathan Swinney Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" X-TUID: Z3aLYoU9TP4u Previously, the checkasm test always passed h=8, so no other cases were tested. Out of the me_cmp functions, in practice, some functions are hardcoded to always assume a 8x8 block (ignoring the h parameter), while others do use the parameter. For those with hardcoded height, both the reference C function and the assembly implementations ignore the parameter similarly. The documentation for the functions indicate that heights between w/2 and 2*w, within the range of 4 to 16, should be supported. This patch just tests random heights in that range, without knowing what width the current function actually uses. --- I'm not sure if it's good to have checkasm exercise cases that don't occur in practice or not. In particular, the aarch64 functions have a separate implementation for non-multiple-of-4 height, which probably doesn't ever get called in practice, while other SIMD implementations lack that. Alternatively, we'd improve the documentation for the expectations for these functions and make the test match that, and remove the unused non-multiple-of-4 case in the aarch64 assembly. --- tests/checkasm/motion.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/tests/checkasm/motion.c b/tests/checkasm/motion.c index 0112822174..79e4358941 100644 --- a/tests/checkasm/motion.c +++ b/tests/checkasm/motion.c @@ -45,7 +45,7 @@ static void test_motion(const char *name, me_cmp_func test_func) /* motion estimation can look up to 17 bytes ahead */ static const int look_ahead = 17; - int i, x, y, d1, d2; + int i, x, y, h, d1, d2; uint8_t *ptr; LOCAL_ALIGNED_16(uint8_t, img1, [WIDTH * HEIGHT]); @@ -68,14 +68,16 @@ static void test_motion(const char *name, me_cmp_func test_func) for (i = 0; i < ITERATIONS; i++) { x = rnd() % (WIDTH - look_ahead); y = rnd() % (HEIGHT - look_ahead); + // Pick a random h between 4 and 16; pick an even value. + h = 4 + ((rnd() % (16 + 1 - 4)) & ~1); ptr = img2 + y * WIDTH + x; - d2 = call_ref(NULL, img1, ptr, WIDTH, 8); - d1 = call_new(NULL, img1, ptr, WIDTH, 8); + d2 = call_ref(NULL, img1, ptr, WIDTH, h); + d1 = call_new(NULL, img1, ptr, WIDTH, h); if (d1 != d2) { fail(); - printf("func: %s, x=%d y=%d, error: asm=%d c=%d\n", name, x, y, d1, d2); + printf("func: %s, x=%d y=%d h=%d, error: asm=%d c=%d\n", name, x, y, h, d1, d2); break; } }