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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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6
spa/plugins/bluez5/media-source.c
View file

@ -1560,6 +1560,12 @@ static void process_buffering(struct impl *this)
if (this->update_delay_event) {
int32_t target = spa_bt_decode_buffer_get_target_latency(&port->buffer);
uint32_t decoder_delay = 0;
if (this->codec->get_delay)
this->codec->get_delay(this->codec_data, NULL, &decoder_delay);
target += decoder_delay;
if (target != this->delay.buffer || duration != this->delay.duration) {
struct delay_info info = { .buffer = target, .duration = duration };