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 ESMTPS id 2CC944BEAB for ; Wed, 22 Jan 2025 08:33:11 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 0906B68B634; Wed, 22 Jan 2025 10:33:08 +0200 (EET) Received: from vidala.pars.ee (vidala.pars.ee [116.203.72.101]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 09DAD6802C1 for ; Wed, 22 Jan 2025 10:33:00 +0200 (EET) DKIM-Signature: v=1; a=rsa-sha256; s=202405r; d=lynne.ee; c=relaxed/relaxed; h=Message-ID:Date:Subject:To:From; t=1737534780; bh=di+uWy9zRgBduFW5umQMslg anXczUODmsBhupHKDo9A=; b=DLB+y+aGK7H/i/VgN6z6U6mhzP8J78dbCcDOt8jWFMZbp1VKGD lWGJs48oIfywXp/ZHt9xphsKiivNsIn1Z8ZLA3uZWxXCHuCjCKOHGgbl3tdYe7Nn6UCFQxPds7+ dTodVymlbfGKH0ln7TP/Rd7idYtorjA0Gkkng5vntAr1xG3R2lGGXiXnjL0d3fXIRhYycAHq09r IqJMcS+jtkOs1N6BXCzlIMYCIbbFLsdVRqURgCdMtDdcxV8186dq76OwnjRpX8Zehm1NRLrsmil 1CyR77YSpa+noJvDLKo99s3UckJdf+39MaJSQiAf9zE7e//dGO3J6M4B7USUznbbQyA==; DKIM-Signature: v=1; a=ed25519-sha256; s=202405e; d=lynne.ee; c=relaxed/relaxed; h=Message-ID:Date:Subject:To:From; t=1737534780; bh=di+uWy9zRgBduFW5umQMslg anXczUODmsBhupHKDo9A=; b=OxWi+6omoMef93+eF+4ADK/K/fM9l7mjIir6c/kBPNKFPG54Oc I1MC/FnUXJEqNzZya60GFBMElbFYT1Gtk7Aw==; From: Lynne To: ffmpeg-devel@ffmpeg.org Date: Wed, 22 Jan 2025 17:32:47 +0900 Message-ID: <20250122083255.1528161-1-dev@lynne.ee> X-Mailer: git-send-email 2.47.1 MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH] ffv1dec: set f->state_transition for default range coder table 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: Lynne 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 table is only set when f->ac is set to CUSTOM. Setting it for default range coder tables simplifies hardware accelerator code. --- libavcodec/ffv1dec.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/libavcodec/ffv1dec.c b/libavcodec/ffv1dec.c index 46aaaadb9c..f5ccf41f38 100644 --- a/libavcodec/ffv1dec.c +++ b/libavcodec/ffv1dec.c @@ -444,6 +444,11 @@ static int read_extra_header(FFV1Context *f) if (f->ac == AC_RANGE_CUSTOM_TAB) { for (int i = 1; i < 256; i++) f->state_transition[i] = get_symbol(&c, state, 1) + c.one_state[i]; + } else { + RangeCoder rc; + ff_build_rac_states(&rc, 0.05 * (1LL << 32), 256 - 8); + for (int i = 1; i < 256; i++) + f->state_transition[i] = rc.one_state[i]; } f->colorspace = get_symbol(&c, state, 0); //YUV cs type @@ -574,6 +579,11 @@ static int read_header(FFV1Context *f, RangeCoder *c) } f->state_transition[i] = st; } + } else { + RangeCoder rc; + ff_build_rac_states(&rc, 0.05 * (1LL << 32), 256 - 8); + for (int i = 1; i < 256; i++) + f->state_transition[i] = rc.one_state[i]; } colorspace = get_symbol(c, state, 0); //YUV cs type -- 2.47.1 _______________________________________________ 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".