From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ffbox0-bg.ffmpeg.org (ffbox0-bg.ffmpeg.org [79.124.17.100]) by master.gitmailbox.com (Postfix) with ESMTPS id E7BB74F69A for ; Fri, 20 Jun 2025 13:22:58 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.ffmpeg.org (Postfix) with ESMTP id D2BE568DCF4; Fri, 20 Jun 2025 16:21:56 +0300 (EEST) Received: from haasn.dev (haasn.dev [78.46.187.166]) by ffbox0-bg.ffmpeg.org (Postfix) with ESMTP id 17CA368DCFC for ; Fri, 20 Jun 2025 16:21:46 +0300 (EEST) Received: from haasn.dev (unknown [10.30.1.1]) by haasn.dev (Postfix) with UTF8SMTP id B990D4812E; Fri, 20 Jun 2025 15:21:41 +0200 (CEST) From: Niklas Haas To: ffmpeg-devel@ffmpeg.org Date: Fri, 20 Jun 2025 15:21:38 +0200 Message-ID: <20250620132139.2431475-13-ffmpeg@haasn.xyz> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250620132139.2431475-1-ffmpeg@haasn.xyz> References: <20250620132139.2431475-1-ffmpeg@haasn.xyz> MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH v5 13/13] avfilter/x86/f_ebur128: implement AVX peak calculation 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: Niklas Haas Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Archived-At: List-Archive: List-Post: From: Niklas Haas Stereo only, for simplicity. Slightly faster than the C code. --- libavfilter/f_ebur128.c | 8 +++----- libavfilter/f_ebur128.h | 2 +- libavfilter/x86/f_ebur128.asm | 20 ++++++++++++++++++++ libavfilter/x86/f_ebur128_init.c | 9 +++++++-- 4 files changed, 31 insertions(+), 8 deletions(-) diff --git a/libavfilter/f_ebur128.c b/libavfilter/f_ebur128.c index 514be7a8e3..80cbe20330 100644 --- a/libavfilter/f_ebur128.c +++ b/libavfilter/f_ebur128.c @@ -502,6 +502,9 @@ static int config_audio_output(AVFilterLink *outlink) return AVERROR(ENOMEM); } +#if ARCH_X86 + ff_ebur128_init_x86(&ebur128->dsp, nb_channels); +#endif return 0; } @@ -581,11 +584,6 @@ static av_cold int init(AVFilterContext *ctx) ebur128->dsp.filter_channels = ff_ebur128_filter_channels_c; ebur128->dsp.find_peak = ff_ebur128_find_peak_c; - -#if ARCH_X86 - ff_ebur128_init_x86(&ebur128->dsp); -#endif - return 0; } diff --git a/libavfilter/f_ebur128.h b/libavfilter/f_ebur128.h index ad24a3c129..19564f562b 100644 --- a/libavfilter/f_ebur128.h +++ b/libavfilter/f_ebur128.h @@ -55,7 +55,7 @@ static_assert(offsetof(EBUR128DSPContext, pre) == 0, "struct l static_assert(offsetof(EBUR128DSPContext, rlb) == 5 * sizeof(double), "struct layout mismatch"); static_assert(offsetof(EBUR128DSPContext, y) == 10 * sizeof(double), "struct layout mismatch"); -void ff_ebur128_init_x86(EBUR128DSPContext *dsp); +void ff_ebur128_init_x86(EBUR128DSPContext *dsp, int nb_channels); void ff_ebur128_filter_channels_c(const EBUR128DSPContext *, const double *, double *, double *, double *, double *, int); diff --git a/libavfilter/x86/f_ebur128.asm b/libavfilter/x86/f_ebur128.asm index d9cc8d9361..84f414349d 100644 --- a/libavfilter/x86/f_ebur128.asm +++ b/libavfilter/x86/f_ebur128.asm @@ -39,6 +39,10 @@ struc DSP .z resq 1 endstruc +SECTION_RODATA + +abs_mask: dq 0x7FFFFFFFFFFFFFFF + SECTION .text %macro MOVNQ 3 ; num, dst, src @@ -139,3 +143,19 @@ cglobal ebur128_filter_channels, 7, 9, 14, dsp, samples, cache400, cache3000, su test channelsd, channelsd jnz .loop RET + +cglobal ebur128_find_peak_2ch, 4, 5, 3, ch_peaks, channels, samples, nb_samples + vpbroadcastq m2, [abs_mask] + movupd m0, [ch_peaksq] +.loop: + movupd m1, [samplesq] + add samplesq, 16 + pand m1, m2 + maxpd m0, m1 + dec nb_samplesd + jg .loop + movupd [ch_peaksq], m0 + shufpd m1, m0, m0, 1 + maxpd m0, m1 + movq rax, m0 + RET diff --git a/libavfilter/x86/f_ebur128_init.c b/libavfilter/x86/f_ebur128_init.c index 8f38aee967..4a7109746d 100644 --- a/libavfilter/x86/f_ebur128_init.c +++ b/libavfilter/x86/f_ebur128_init.c @@ -26,10 +26,15 @@ void ff_ebur128_filter_channels_avx(const EBUR128DSPContext *, const double *, double *, double *, double *, double *, int); -av_cold void ff_ebur128_init_x86(EBUR128DSPContext *dsp) +double ff_ebur128_find_peak_2ch_avx(double *, int, const double *, int); + +av_cold void ff_ebur128_init_x86(EBUR128DSPContext *dsp, int nb_channels) { int cpu_flags = av_get_cpu_flags(); - if (ARCH_X86_64 && EXTERNAL_AVX(cpu_flags)) + if (ARCH_X86_64 && EXTERNAL_AVX(cpu_flags)) { dsp->filter_channels = ff_ebur128_filter_channels_avx; + if (nb_channels == 2) + dsp->find_peak = ff_ebur128_find_peak_2ch_avx; + } } -- 2.49.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".