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Fri, 11 Jul 2025 06:21:41 -0700 (PDT) Received: from localhost.localdomain ([38.99.248.174]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-74eb9f4bc51sm5338840b3a.116.2025.07.11.06.21.40 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Fri, 11 Jul 2025 06:21:41 -0700 (PDT) From: Jack Lau X-Google-Original-From: Jack Lau To: ffmpeg-devel@ffmpeg.org Date: Fri, 11 Jul 2025 21:20:49 +0800 Message-ID: <20250711132120.38507-5-jacklau1222@qq.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250711132120.38507-1-jacklau1222@qq.com> References: <20250711132120.38507-1-jacklau1222@qq.com> MIME-Version: 1.0 X-Unsent: 1 Subject: [FFmpeg-devel] [PATCH v2 4/4] avformat/udp: fix udp server mode haven't dest_addr 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: Jack Lau 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: If udp is in server mode(init local addr and port through url), then it maybe haven't dest_addr, so we should set it after udp_read get the client addr and port This feature only enable when the new udp option autodetect_dest is specified Signed-off-by: Jack Lau --- libavformat/udp.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavformat/udp.c b/libavformat/udp.c index 0fde3548e7..7d05e18dcd 100644 --- a/libavformat/udp.c +++ b/libavformat/udp.c @@ -99,6 +99,7 @@ typedef struct UDPContext { struct sockaddr_storage dest_addr; int dest_addr_len; int is_connected; + int autodetect_dest; /* Circular Buffer variables for use in UDP receive code */ int circular_buffer_size; @@ -143,6 +144,7 @@ static const AVOption options[] = { { "broadcast", "explicitly allow or disallow broadcast destination", OFFSET(is_broadcast), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E }, { "ttl", "Time to live (multicast only)", OFFSET(ttl), AV_OPT_TYPE_INT, { .i64 = 16 }, 0, 255, E }, { "connect", "set if connect() should be called on socket", OFFSET(is_connected), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, .flags = D|E }, + { "autodetect_dest", "Auto detect destination from last received addr", OFFSET(autodetect_dest), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, D|E }, { "fifo_size", "set the UDP receiving circular buffer size, expressed as a number of packets with size of 188 bytes", OFFSET(circular_buffer_size), AV_OPT_TYPE_INT, {.i64 = 7*4096}, 0, INT_MAX, D }, { "overrun_nonfatal", "survive in case of UDP receiving circular buffer overrun", OFFSET(overrun_nonfatal), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, D }, { "timeout", "set raise error timeout, in microseconds (only in read mode)",OFFSET(timeout), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, D }, @@ -1144,6 +1146,8 @@ static int udp_write(URLContext *h, const uint8_t *buf, int size) } if (!s->is_connected) { + if (s->autodetect_dest && !s->dest_addr_len && !s->dest_addr.ss_family) + ff_udp_get_last_recv_addr(h, &s->dest_addr, &s->dest_addr_len); ret = sendto (s->udp_fd, buf, size, 0, (struct sockaddr *) &s->dest_addr, s->dest_addr_len); -- 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".