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| author | Gyan Doshi <ffmpeg@gyani.pro> | 2020-09-06 12:24:46 +0530 |
|---|---|---|
| committer | Gyan Doshi <ffmpeg@gyani.pro> | 2020-09-09 11:40:06 +0530 |
| commit | 1e5b3f77d9f6f6827b5755763ef041d360969d0c (patch) | |
| tree | 730b2d3218f16c25949aef8dcedbbc0e818ec911 | |
| parent | 99e12b5736bd4a63186a4fc71b69ca3ec0c9fa34 (diff) | |
| download | ffmpeg-1e5b3f77d9f6f6827b5755763ef041d360969d0c.tar.gz | |
avcodec/libopusenc: add option to set inband FEC
| -rw-r--r-- | doc/encoders.texi | 5 | ||||
| -rw-r--r-- | libavcodec/libopusenc.c | 9 |
2 files changed, 14 insertions, 0 deletions
diff --git a/doc/encoders.texi b/doc/encoders.texi index 69bf742c2d..a48b15eb1b 100644 --- a/doc/encoders.texi +++ b/doc/encoders.texi @@ -953,6 +953,11 @@ The default is 20ms. @item packet_loss (@emph{expect-loss}) Set expected packet loss percentage. The default is 0. +@item fec (@emph{n/a}) +Enable inband forward error correction. @option{packet_loss} must be non-zero +to take advantage - frequency of FEC 'side-data' is proportional to expected packet loss. +Default is disabled. + @item application (N.A.) Set intended application type. Valid options are listed below: diff --git a/libavcodec/libopusenc.c b/libavcodec/libopusenc.c index 13017ac323..bf2d04b4fb 100644 --- a/libavcodec/libopusenc.c +++ b/libavcodec/libopusenc.c @@ -34,6 +34,7 @@ typedef struct LibopusEncOpts { int vbr; int application; int packet_loss; + int fec; int complexity; float frame_duration; int packet_size; @@ -149,6 +150,13 @@ static int libopus_configure_encoder(AVCodecContext *avctx, OpusMSEncoder *enc, "Unable to set expected packet loss percentage: %s\n", opus_strerror(ret)); + ret = opus_multistream_encoder_ctl(enc, + OPUS_SET_INBAND_FEC(opts->fec)); + if (ret != OPUS_OK) + av_log(avctx, AV_LOG_WARNING, + "Unable to set inband FEC: %s\n", + opus_strerror(ret)); + if (avctx->cutoff) { ret = opus_multistream_encoder_ctl(enc, OPUS_SET_MAX_BANDWIDTH(opts->max_bandwidth)); @@ -544,6 +552,7 @@ static const AVOption libopus_options[] = { { "lowdelay", "Restrict to only the lowest delay modes", 0, AV_OPT_TYPE_CONST, { .i64 = OPUS_APPLICATION_RESTRICTED_LOWDELAY }, 0, 0, FLAGS, "application" }, { "frame_duration", "Duration of a frame in milliseconds", OFFSET(frame_duration), AV_OPT_TYPE_FLOAT, { .dbl = 20.0 }, 2.5, 120.0, FLAGS }, { "packet_loss", "Expected packet loss percentage", OFFSET(packet_loss), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 100, FLAGS }, + { "fec", "Enable inband FEC. Expected packet loss must be non-zero", OFFSET(fec), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS }, { "vbr", "Variable bit rate mode", OFFSET(vbr), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 2, FLAGS, "vbr" }, { "off", "Use constant bit rate", 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, 0, 0, FLAGS, "vbr" }, { "on", "Use variable bit rate", 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, 0, 0, FLAGS, "vbr" }, |