diff options
Diffstat (limited to 'gnu/packages/patches/ffmpeg-jami-libopusenc-reload-packet-loss-at-encode.patch')
| -rw-r--r-- | gnu/packages/patches/ffmpeg-jami-libopusenc-reload-packet-loss-at-encode.patch | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/gnu/packages/patches/ffmpeg-jami-libopusenc-reload-packet-loss-at-encode.patch b/gnu/packages/patches/ffmpeg-jami-libopusenc-reload-packet-loss-at-encode.patch new file mode 100644 index 0000000000..5c4bd4d3eb --- /dev/null +++ b/gnu/packages/patches/ffmpeg-jami-libopusenc-reload-packet-loss-at-encode.patch @@ -0,0 +1,44 @@ +From dba13d03bc8e827fededc20b0ab1f574a1500f2a Mon Sep 17 00:00:00 2001 +From: Philip-Dylan Gleonec <philip-dylan.gleonec@savoirfairelinux.com> +Date: Thu, 11 Feb 2021 12:25:14 +0100 +Subject: [PATCH 2/2] avcodec/libopusenc: reload packet loss at encode + +An estimation of packet loss is required by libopus to compute its FEC +data. Currently, this estimation is constant, and can not be changed +after configuration. This means an application using libopus through +ffmpeg can not adapt the packet loss estimation when the network +quality degrades. + +This patch makes the encoder reload the packet_loss AVOption before +encoding samples, if fec is enabled. This way an application can modify +the packet loss estimation by changing the AVOption. Typical use-case +is a RTP stream, where packet loss can be estimated from RTCP packets. + +Signed-off-by: Philip-Dylan Gleonec <philip-dylan.gleonec@savoirfairelinux.com> +--- + libavcodec/libopusenc.c | 9 +++++++++ + 1 file changed, 9 insertions(+) + +diff --git a/libavcodec/libopusenc.c b/libavcodec/libopusenc.c +index 70d17f802b..c18e8ae7fa 100644 +--- a/libavcodec/libopusenc.c ++++ b/libavcodec/libopusenc.c +@@ -460,6 +460,15 @@ static int libopus_encode(AVCodecContext *avctx, AVPacket *avpkt, + int ret; + int discard_padding; + ++ if (opus->opts.fec) { ++ ret = opus_multistream_encoder_ctl(opus->enc, ++ OPUS_SET_PACKET_LOSS_PERC(opus->opts.packet_loss)); ++ if (ret != OPUS_OK) ++ av_log(avctx, AV_LOG_WARNING, ++ "Unable to set expected packet loss percentage: %s\n", ++ opus_strerror(ret)); ++ } ++ + if (frame) { + ret = ff_af_queue_add(&opus->afq, frame); + if (ret < 0) +-- +2.25.1 + |