From patchwork Mon Jun 10 20:23:19 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?R=C3=A9mi_Denis-Courmont?= X-Patchwork-Id: 49784 Delivered-To: ffmpegpatchwork2@gmail.com Received: by 2002:a59:c209:0:b0:460:55fa:d5ed with SMTP id d9csp2771681vqo; Mon, 10 Jun 2024 13:23:44 -0700 (PDT) X-Forwarded-Encrypted: i=2; AJvYcCUQlSP0H9UlXT2QDv3wNFqKinRFvb0F3khLBOPRDTw7veeK+IiItKV14gRf4JWoC05nfizA6CHzUsCcDn/pQRr+qRGLmoJlpdFu+w== X-Google-Smtp-Source: AGHT+IErFhVPHh1JFS9uMj6hgsG1Wcacu9mr5q037mPTkwsUnTzPvEBAA78UP8JN6yDyJbG13HSf X-Received: by 2002:a17:906:c106:b0:a6f:1e88:d48f with SMTP id a640c23a62f3a-a6f1e88d574mr276213366b.62.1718051024584; Mon, 10 Jun 2024 13:23:44 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1718051024; cv=none; d=google.com; s=arc-20160816; b=bLD9msYOqYAfQkp2XtcjVT/28vL+l+41MHCFEfQTBPSPDTclLKbIArKdJtkkFCkXTg qKrWo11jiDE+rQAnCW84VvFSNi1O6a12DLUiTurjyh08O5viWDJ1RRWVdOEESkhumGT7 ZRscZ6hqvpFZH5DtYe2YO2H1o84ndpiavYqb/ZjAgpQmWAJy27bJZUxw+heD+n6LqgEn j0uG9YQuSdB/Ho2QQlSlX0DCY2JJKtk5VurGGY18Hk24FWrWKa+4wlEy8rQr/zJ4MJog VQiV2ayaIYS/B6sequF0KsHermxBtG8CWrhCD+ZrFpAgWvApa9UkQ++j+J03MnIBm2xJ UZYg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:content-transfer-encoding:reply-to:list-subscribe :list-help:list-post:list-archive:list-unsubscribe:list-id :precedence:subject:mime-version:message-id:date:to:from :delivered-to; bh=asif0gG2b9Rn4dQhH3DP8EP792Mf1S0wyV6pHvc3de0=; fh=YOA8vD9MJZuwZ71F/05pj6KdCjf6jQRmzLS+CATXUQk=; b=ieWczk/d2PGYKk9h01eGS8R6hwtF88XCFofAAwp4/oRlCbuCfB4sPsns9itLlw2Zhf HOgRXXXRLTF8Od8tZJTpP7q/6+zBqOhGw2MBCXhVURxdQmcpuB/FUWtEtpMBgU/p0/59 ccberolQCiEL0noair6xul/CYvnywnEWthoNIYLRa8EFcSqaKLszF307Zx8OliIbcRFk 3JmQkUpbkOS/tQyf8CgmPd7Y8EKq6Rk8jr4gbnNECm5tZiZGBRyBhdb3xU9wxRGJQ0hO Do45yJncSDkhJj519/aOj317IIU4cw9MdyonQ8Oc0XKECSv+k+ki1pak9LFCr56Y8pz9 wEWQ==; dara=google.com ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) smtp.mailfrom=ffmpeg-devel-bounces@ffmpeg.org Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org. [79.124.17.100]) by mx.google.com with ESMTP id a640c23a62f3a-a6f2df7f186si53414866b.166.2024.06.10.13.23.43; Mon, 10 Jun 2024 13:23:44 -0700 (PDT) Received-SPF: pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) client-ip=79.124.17.100; Authentication-Results: mx.google.com; spf=pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) smtp.mailfrom=ffmpeg-devel-bounces@ffmpeg.org Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 3D59F68D6EC; Mon, 10 Jun 2024 23:23:31 +0300 (EEST) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from ursule.remlab.net (vps-a2bccee9.vps.ovh.net [51.75.19.47]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 442A868D64B for ; Mon, 10 Jun 2024 23:23:23 +0300 (EEST) Received: from basile.remlab.net (localhost [IPv6:::1]) by ursule.remlab.net (Postfix) with ESMTP id 72046C0069 for ; Mon, 10 Jun 2024 23:23:22 +0300 (EEST) From: =?utf-8?q?R=C3=A9mi_Denis-Courmont?= To: ffmpeg-devel@ffmpeg.org Date: Mon, 10 Jun 2024 23:23:19 +0300 Message-ID: <20240610202322.786800-1-remi@remlab.net> X-Mailer: git-send-email 2.45.1 MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCHv4 1/4] lavc/h263dsp: add DCT dequantisation functions 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 Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" X-TUID: pok0kaxLaK9K Note that optimised implementations of these functions will be taken into actual use only if MpegEncContext.dct_unquantize_h263_{inter,intra} are *not* overloaded by existing optimisations. --- libavcodec/h263dsp.c | 25 +++++++++++++++++++++++++ libavcodec/h263dsp.h | 4 ++++ 2 files changed, 29 insertions(+) diff --git a/libavcodec/h263dsp.c b/libavcodec/h263dsp.c index 6a13353499..755d7077bf 100644 --- a/libavcodec/h263dsp.c +++ b/libavcodec/h263dsp.c @@ -23,6 +23,29 @@ #include "config.h" #include "h263dsp.h" +static void h263_dct_unquantize_inter_c(int16_t *block, size_t nCoeffs, + int qmul, int qadd) +{ + for (size_t i = 0; i <= nCoeffs; i++) { + int level = block[i]; + + if (level) { + if (level < 0) + level = level * qmul - qadd; + else + level = level * qmul + qadd; + block[i] = level; + } + } +} + +static void h263_dct_unquantize_intra_c(int16_t *block, size_t nCoeffs, + int qmul, int qadd) +{ + if (nCoeffs > 0) + h263_dct_unquantize_inter_c(block + 1, nCoeffs - 1, qmul, qadd); +} + const uint8_t ff_h263_loop_filter_strength[32] = { 0, 1, 1, 2, 2, 3, 3, 4, 4, 4, 5, 5, 6, 6, 7, 7, 7, 8, 8, 8, 9, 9, 9, 10, 10, 10, 11, 11, 11, 12, 12, 12 @@ -116,6 +139,8 @@ static void h263_v_loop_filter_c(uint8_t *src, int stride, int qscale) av_cold void ff_h263dsp_init(H263DSPContext *ctx) { + ctx->h263_dct_unquantize_intra = h263_dct_unquantize_intra_c; + ctx->h263_dct_unquantize_inter = h263_dct_unquantize_inter_c; ctx->h263_h_loop_filter = h263_h_loop_filter_c; ctx->h263_v_loop_filter = h263_v_loop_filter_c; diff --git a/libavcodec/h263dsp.h b/libavcodec/h263dsp.h index 2dccd23392..0ecbe83314 100644 --- a/libavcodec/h263dsp.h +++ b/libavcodec/h263dsp.h @@ -24,6 +24,10 @@ extern const uint8_t ff_h263_loop_filter_strength[32]; typedef struct H263DSPContext { + void (*h263_dct_unquantize_intra)(int16_t *block /* align 16 */, + size_t len, int mul, int add); + void (*h263_dct_unquantize_inter)(int16_t *block /* align 16 */, + size_t len, int mul, int add); void (*h263_h_loop_filter)(uint8_t *src, int stride, int qscale); void (*h263_v_loop_filter)(uint8_t *src, int stride, int qscale); } H263DSPContext;