From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by master.gitmailbox.com (Postfix) with ESMTP id 5E4154B107 for ; Wed, 29 May 2024 15:00:05 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 98D6968D2FB; Wed, 29 May 2024 18:00:03 +0300 (EEST) Received: from ursule.remlab.net (vps-a2bccee9.vps.ovh.net [51.75.19.47]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id A674E68D189 for ; Wed, 29 May 2024 17:59:56 +0300 (EEST) Received: from basile.remlab.net (localhost [IPv6:::1]) by ursule.remlab.net (Postfix) with ESMTP id 28EBBC006D for ; Wed, 29 May 2024 17:59:56 +0300 (EEST) From: =?UTF-8?q?R=C3=A9mi=20Denis-Courmont?= To: ffmpeg-devel@ffmpeg.org Date: Wed, 29 May 2024 17:59:52 +0300 Message-ID: <20240529145955.32189-1-remi@remlab.net> X-Mailer: git-send-email 2.45.1 MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH 1/4] lavu/float_dsp: add double-precision scalar product 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 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: The function pointer is appended to the structure for backward binary compatibility. Fortunately, this is allocated by libavutil, not by the user, so increasing the structure size is safe. --- doc/APIchanges | 3 +++ libavutil/float_dsp.c | 12 ++++++++++++ libavutil/float_dsp.h | 14 ++++++++++++++ libavutil/version.h | 2 +- 4 files changed, 30 insertions(+), 1 deletion(-) diff --git a/doc/APIchanges b/doc/APIchanges index 60f056b863..50c51c664f 100644 --- a/doc/APIchanges +++ b/doc/APIchanges @@ -2,6 +2,9 @@ The last version increases of all libraries were on 2024-03-07 API changes, most recent first: +2024-05-29 - xxxxxxxxxx - lavu 59.21.100 - float_dsp.h + Add AVFloatDSPContext.scalarproduct_double. + 2024-05-23 - xxxxxxxxxx - lavu 59.20.100 - channel_layout.h Add av_channel_layout_ambisonic_order(). diff --git a/libavutil/float_dsp.c b/libavutil/float_dsp.c index e9fb023466..1c5bb05636 100644 --- a/libavutil/float_dsp.c +++ b/libavutil/float_dsp.c @@ -132,6 +132,17 @@ float avpriv_scalarproduct_float_c(const float *v1, const float *v2, int len) return p; } +static double ff_scalarproduct_double_c(const double *v1, const double *v2, + size_t len) +{ + double p = 0.0; + + for (size_t i = 0; i < len; i++) + p += v1[i] * v2[i]; + + return p; +} + av_cold AVFloatDSPContext *avpriv_float_dsp_alloc(int bit_exact) { AVFloatDSPContext *fdsp = av_mallocz(sizeof(AVFloatDSPContext)); @@ -149,6 +160,7 @@ av_cold AVFloatDSPContext *avpriv_float_dsp_alloc(int bit_exact) fdsp->vector_fmul_reverse = vector_fmul_reverse_c; fdsp->butterflies_float = butterflies_float_c; fdsp->scalarproduct_float = avpriv_scalarproduct_float_c; + fdsp->scalarproduct_double = ff_scalarproduct_double_c; #if ARCH_AARCH64 ff_float_dsp_init_aarch64(fdsp); diff --git a/libavutil/float_dsp.h b/libavutil/float_dsp.h index 342a8715c5..b6b5b0a3b3 100644 --- a/libavutil/float_dsp.h +++ b/libavutil/float_dsp.h @@ -19,6 +19,8 @@ #ifndef AVUTIL_FLOAT_DSP_H #define AVUTIL_FLOAT_DSP_H +#include + typedef struct AVFloatDSPContext { /** * Calculate the entry wise product of two vectors of floats and store the result in @@ -187,6 +189,18 @@ typedef struct AVFloatDSPContext { */ void (*vector_dmul)(double *dst, const double *src0, const double *src1, int len); + + /** + * Calculate the scalar product of two vectors of doubles. + * + * @param v1 first vector + * @param v2 second vector + * @param len length of vectors + * + * @return inner product of the vectors + */ + double (*scalarproduct_double)(const double *v1, const double *v2, + size_t len); } AVFloatDSPContext; /** diff --git a/libavutil/version.h b/libavutil/version.h index 9c7146c228..9d08d56884 100644 --- a/libavutil/version.h +++ b/libavutil/version.h @@ -79,7 +79,7 @@ */ #define LIBAVUTIL_VERSION_MAJOR 59 -#define LIBAVUTIL_VERSION_MINOR 20 +#define LIBAVUTIL_VERSION_MINOR 21 #define LIBAVUTIL_VERSION_MICRO 100 #define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \ -- 2.45.1 _______________________________________________ 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".