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Wed, 14 May 2025 06:40:40 -0700 (PDT) Received: from localhost.localdomain ([124.79.129.75]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-74237a8f7edsm9310669b3a.167.2025.05.14.06.40.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 May 2025 06:40:39 -0700 (PDT) From: toqsxw@gmail.com X-Google-Original-From: toqsxw@outlook.com To: ffmpeg-devel@ffmpeg.org Date: Wed, 14 May 2025 21:40:08 +0800 Message-ID: <20250514134031.1584-1-toqsxw@outlook.com> X-Mailer: git-send-email 2.44.0.windows.1 MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH v1 01/23] avcodec/vvc/cabac: add 9.3.3.5 k-th order Exp - Golomb binarization process 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: Wu Jianhua 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: Wu Jianhua Signed-off-by: Wu Jianhua --- libavcodec/vvc/cabac.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/libavcodec/vvc/cabac.c b/libavcodec/vvc/cabac.c index 5510144893..54055ed736 100644 --- a/libavcodec/vvc/cabac.c +++ b/libavcodec/vvc/cabac.c @@ -928,6 +928,27 @@ static int truncated_binary_decode(VVCLocalContext *lc, const int c_max) return v; } +// 9.3.3.5 k-th order Exp - Golomb binarization process +static int kth_order_egk_decode(CABACContext *c, int k) +{ + int bit = 1; + int value = 0; + int symbol = 0; + + while (bit) { + bit = get_cabac_bypass(c); + value += bit << k++; + } + + if (--k) { + for (int i = 0; i < k; i++) + symbol = (symbol << 1) | get_cabac_bypass(c); + value += symbol; + } + + return value; +} + // 9.3.3.6 Limited k-th order Exp-Golomb binarization process static int limited_kth_order_egk_decode(CABACContext *c, const int k, const int max_pre_ext_len, const int trunc_suffix_len) { -- 2.44.0.windows.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".