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Bluetooth: Audio: Rename bt_audio_codec_qos -> bt_bap_qos_cfg #76633

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Bluetooth: Audio: Rename bt_audio_codec_qos -> bt_bap_qos_cfg #76633

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Thalley
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@Thalley Thalley commented Aug 2, 2024 •
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The QoS structure is not related to a codec, but rather a stream, and should thus not use the "Codec" name.

The BAP and ASCS specs refer to the QoS as
"QoS configuration" several places, so it is an obvious choice for a name.

Since the structure is defined and used by BAP, the prefix was changed from bt_audio to bt_bap.

fixes #72684

@Thalley Thalley marked this pull request as ready for review August 2, 2024 12:58
@Thalley Thalley assigned Thalley and unassigned jhedberg Aug 2, 2024
kruithofa
kruithofa reviewed Aug 9, 2024
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include/zephyr/bluetooth/audio/bap.h Outdated
Comment on lines 252 to 264
* Unlike the other fields, this is not a preference but a minimum requirement.
*
* Value range 0 to @ref BT_AUDIO_PD_MAX, or @ref BT_AUDIO_PD_PREF_NONE
* to indicate no preference.
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The documentation for the presentation delay fields seem wrong. Although fixing this is not strictly part of this PR it may as well be done here, instead of creating a separate PR for fixing it.

Suggested change
* Unlike the other fields, this is not a preference but a minimum requirement.
*
* Value range 0 to @ref BT_AUDIO_PD_MAX, or @ref BT_AUDIO_PD_PREF_NONE
* to indicate no preference.
* Unlike the other fields, this is not a preference but a minimum requirement.
*
* Value range 0 to @ref BT_AUDIO_PD_MIN

include/zephyr/bluetooth/audio/bap.h Outdated
/**
* @brief Preferred minimum Presentation Delay
*
* Value range 0 to @ref BT_AUDIO_PD_MAX.
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Suggested change
* Value range 0 to @ref BT_AUDIO_PD_MAX.
* Value range pd_min to pref_pd_max, or @ref BT_AUDIO_PD_PREF_NONE
* to indicate no preference.

include/zephyr/bluetooth/audio/bap.h Outdated
Comment on lines 264 to 274
* Value range 0 to @ref BT_AUDIO_PD_MAX, or @ref BT_AUDIO_PD_PREF_NONE
* to indicate no preference.
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Suggested change
* Value range 0 to @ref BT_AUDIO_PD_MAX, or @ref BT_AUDIO_PD_PREF_NONE
* to indicate no preference.
* Value range 0 to @ref BT_AUDIO_PD_MAX

include/zephyr/bluetooth/audio/bap.h Outdated
/**
* @brief Preferred maximum Presentation Delay
*
* Value range 0 to @ref BT_AUDIO_PD_MAX.
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Suggested change
* Value range 0 to @ref BT_AUDIO_PD_MAX.
* Value range pref_pd_min to px_max, or @ref BT_AUDIO_PD_PREF_NONE
* to indicate no preference.

include/zephyr/bluetooth/audio/bap.h Outdated
uint32_t pd_min;

/**
* @brief Maximum Presentation Delay
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Suggested change
* @brief Maximum Presentation Delay
* @brief Maximum Presentation Delay in microseconds

include/zephyr/bluetooth/audio/bap.h Outdated
uint32_t pd_max;

/**
* @brief Preferred minimum Presentation Delay
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Suggested change
* @brief Preferred minimum Presentation Delay
* @brief Preferred minimum Presentation Delay in microseconds

include/zephyr/bluetooth/audio/bap.h Outdated
uint32_t pref_pd_min;

/**
* @brief Preferred maximum Presentation Delay
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Suggested change
* @brief Preferred maximum Presentation Delay
* @brief Preferred maximum Presentation Delay in microseconds

@hermabe hermabe removed their request for review August 9, 2024 11:46
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Thalley commented Aug 13, 2024

@kruithofa would prefer not to modify more than necessary in this PR. It will likely conflict with #75763 and once one of them is one, I can update the remaining PR with your comments.

@Thalley Thalley requested a review from kruithofa August 13, 2024 12:22
kruithofa
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The comments will be handled in a separate PR, that's ok with me.

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Thalley commented Sep 9, 2024

Rebased to solve merge conflicts

kruithofa
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Thalley commented Sep 11, 2024

Rebased to solve merge conflicts

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Thalley commented Sep 23, 2024

Rebased to solve merge conflicts

kruithofa
kruithofa previously approved these changes Sep 24, 2024
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Thalley commented Sep 27, 2024

Rebased to solve merge conflicts

sjanc
sjanc previously approved these changes Oct 1, 2024
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fredrikdanebjer
fredrikdanebjer previously approved these changes Oct 2, 2024
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Great work! Just 2 comments to address

subsys/bluetooth/audio/bap_stream.c Outdated
LOG_DBG("Invalid combination of pref_pd_min %u, pd_min %u and pd_max: %u",
qos_pref->pref_pd_min, qos_pref->pd_min, qos_pref->pd_max);

return false;
}

if (qos_pref->pref_pd_max < qos_pref->pref_pd_min) {
if (qos_pref->pref_pd_max != BT_AUDIO_PD_PREF_NONE &&
qos_pref->pref_pd_max < qos_pref->pref_pd_min) {
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What if qos_pref->pref_pd_min == BT_AUDIO_PD_PREF_NONE ?

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Then qos_pref->pref_pd_max < qos_pref->pref_pd_min is applied, ensuring that our pref_pd_max is greater or equal than pref_pd_min

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Should be:

if (qos_pref->pref_pd_max != BT_AUDIO_PD_PREF_NONE &&
	qos_pref->pref_pd_min != BT_AUDIO_PD_PREF_NONE && 
	qos_pref->pref_pd_max < qos_pref->pref_pd_min) {

subsys/bluetooth/audio/bap_stream.c Outdated
* the ASCS spec, but should also be >= MAX(pd_min, pref_pd_min)
*/
if (qos_pref->pref_pd_max != BT_AUDIO_PD_PREF_NONE) {
const uint32_t min_val = qos_pref->pref_pd_min == BT_AUDIO_PD_PREF_NONE
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I don't see the need for the min_val calculation. Above we have validated that

pd_min <= pref_pd_min <= pd_max
and
pref_pd_max >= pref_pd_min

We only need to validate

pd_min <= pref_pd_max <= pd_max

So just keep the old inrange check

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In the case that qos_pref->pref_pd_min == BT_AUDIO_PD_PREF_NONE then neither the pd_min <= pref_pd_min <= pd_max nor pref_pd_max >= pref_pd_min checks are performed.

So if

  • pref_pd_min == BT_AUDIO_PD_PREF_NONE then pref_pd_max shall be greater or equal to pd_min
  • pref_pd_min != BT_AUDIO_PD_PREF_NONE then pref_pd_max shall be greater or equal to pref_pd_min

But you are right that MAX(qos_pref->pd_min, qos_pref->pref_pd_min) can be replaced with pref_pd_min, as pref_pd_min >= pd_min if pref_pd_min != BT_AUDIO_PD_PREF_NONE.

Actually the calculation can simply be const uint32_t min_val = MAX(qos_pref->pd_min, qos_pref->pref_pd_min)

@Thalley Thalley dismissed stale reviews from fredrikdanebjer and sjanc via 492099e October 2, 2024 12:47
jthm-ot
jthm-ot requested changes Oct 4, 2024
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subsys/bluetooth/audio/bap_stream.c Outdated
LOG_DBG("Invalid combination of pref_pd_min %u, pd_min %u and pd_max: %u",
qos_pref->pref_pd_min, qos_pref->pd_min, qos_pref->pd_max);

return false;
}

if (qos_pref->pref_pd_max < qos_pref->pref_pd_min) {
if (qos_pref->pref_pd_max != BT_AUDIO_PD_PREF_NONE &&
qos_pref->pref_pd_max < qos_pref->pref_pd_min) {
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Should be:

if (qos_pref->pref_pd_max != BT_AUDIO_PD_PREF_NONE &&
	qos_pref->pref_pd_min != BT_AUDIO_PD_PREF_NONE && 
	qos_pref->pref_pd_max < qos_pref->pref_pd_min) {

subsys/bluetooth/audio/bap_stream.c Outdated
/* If pref_pd_max is not BT_AUDIO_PD_PREF_NONE then it shall pref_pd_max <= pd_max as per
* the ASCS spec, but should also be >= MAX(pd_min, pref_pd_min)
*/
if (qos_pref->pref_pd_max != BT_AUDIO_PD_PREF_NONE) {
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Should just be:

if (qos_pref->pref_pd_max != BT_AUDIO_PD_PREF_NONE) {
	if (!IN_RANGE(qos_pref->pref_pd_max, qos_pref->pd_min, qos_pref->pd_max)) {

With the change requested previously it has already been validated that
qos_pref->pref_pd_max <= qos_pref->pref_pd_min

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Thalley commented Oct 4, 2024

@sjanc @jthm-ot I've done what I should have done from the beginning and fixed the checks in a separate PR: #79413

@Thalley
Bluetooth: Audio: Rename bt_audio_codec_qos -> bt_bap_qos_cfg
5f14ccc 
The QoS structure is not related to a codec, but rather a
stream, and should thus not use the "Codec" name.

The BAP and ASCS specs refer to the QoS as
"QoS configuration" several places, so it is an obvious
choice for a name.

Since the structure is defined and used by BAP, the prefix
was changed from bt_audio to bt_bap.

Signed-off-by: Emil Gydesen <[email protected]>
@Thalley Thalley requested a review from jthm-ot October 4, 2024 09:18
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area: Bluetooth Audio area: Bluetooth Qualification Bluetooth Qualification -related issues and pull requests area: Bluetooth area: Samples Samples Release Notes To be mentioned in the release notes
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LE Audio: Rename struct bt_audio_codec_qos
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@Thalley @sjanc @fredrikdanebjer @kruithofa @jthm-ot @jhedberg @zephyrbot