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bluez5: account for codec internal delay in latency values

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Encoders and some decoders have additional internal latency that needs
to be accounted for.

This mostly matters for AAC (~40ms), as the other BT codecs have much
lower delays (~5ms).
This commit is contained in:
Pauli Virtanen 2024-02-23 21:04:47 +02:00 • committed by Wim Taymans
parent 1b3b577b8f
commit 2d30ab94c2
10 changed files with 151 additions and 10 deletions
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13
spa/plugins/bluez5/a2dp-codec-aptx.c
View file

@ -449,6 +449,14 @@ static int codec_decode(void *data,
return res;
}
static void codec_get_delay(void *data, uint32_t *encoder, uint32_t *decoder)
{
if (encoder)
*encoder = 90;
if (decoder)
*decoder = 0;
}
/*
* mSBC duplex codec
*
@ -627,6 +635,7 @@ const struct media_codec a2dp_codec_aptx = {
.decode = codec_decode,
.reduce_bitpool = codec_reduce_bitpool,
.increase_bitpool = codec_increase_bitpool,
.get_delay = codec_get_delay,
};
@ -650,6 +659,7 @@ const struct media_codec a2dp_codec_aptx_hd = {
.decode = codec_decode,
.reduce_bitpool = codec_reduce_bitpool,
.increase_bitpool = codec_increase_bitpool,
.get_delay = codec_get_delay,
};
#define APTX_LL_COMMON_DEFS \
@ -665,7 +675,8 @@ const struct media_codec a2dp_codec_aptx_hd = {
.start_encode = codec_start_encode, \
.encode = codec_encode, \
.reduce_bitpool = codec_reduce_bitpool, \
.increase_bitpool = codec_increase_bitpool
.increase_bitpool = codec_increase_bitpool, \
.get_delay = codec_get_delay
const struct media_codec a2dp_codec_aptx_ll_0 = {