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Revert "Update of a2dp-codec-sbc.c to achieve SBC XQ quality in dual channel, with fall back to standard Joint Stereo mode"

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This reverts commit 4e1cbef687.

This needs some more work
This commit is contained in:
Wim Taymans 2021-01-07 14:58:29 +01:00
parent b17db2cebc
commit e61f571e22
1 changed files with 8 additions and 9 deletions
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17
spa/plugins/bluez5/a2dp-codec-sbc.c
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@ -85,8 +85,7 @@ static int codec_fill_caps(const struct a2dp_codec *codec, uint32_t flags,
static uint8_t default_bitpool(uint8_t freq, uint8_t mode)
{
/* A2DP spec v1.2 states that all SNK implementation shall handle bitrates
of up to 512 kbps (~ bitpool = 76 stereo, or 2x38 dual channel). */
/* These bitpool values were chosen based on the A2DP spec recommendation */
switch (freq) {
case SBC_SAMPLING_FREQ_16000:
case SBC_SAMPLING_FREQ_32000:
@ -96,22 +95,22 @@ static uint8_t default_bitpool(uint8_t freq, uint8_t mode)
switch (mode) {
case SBC_CHANNEL_MODE_MONO:
case SBC_CHANNEL_MODE_DUAL_CHANNEL:
return 38;
return 31;
case SBC_CHANNEL_MODE_STEREO:
case SBC_CHANNEL_MODE_JOINT_STEREO:
return 64;
return 53;
}
return 53;
case SBC_SAMPLING_FREQ_48000:
switch (mode) {
case SBC_CHANNEL_MODE_MONO:
case SBC_CHANNEL_MODE_DUAL_CHANNEL:
return 35;
return 29;
case SBC_CHANNEL_MODE_STEREO:
case SBC_CHANNEL_MODE_JOINT_STEREO:
return 62;
return 51;
}
return 51;
}
@ -141,12 +140,12 @@ static int codec_select_config(const struct a2dp_codec *codec, uint32_t flags,
else
return -ENOTSUP;
if (conf.channel_mode & SBC_CHANNEL_MODE_DUAL_CHANNEL)
conf.channel_mode = SBC_CHANNEL_MODE_DUAL_CHANNEL;
else if (conf.channel_mode & SBC_CHANNEL_MODE_JOINT_STEREO)
if (conf.channel_mode & SBC_CHANNEL_MODE_JOINT_STEREO)
conf.channel_mode = SBC_CHANNEL_MODE_JOINT_STEREO;
else if (conf.channel_mode & SBC_CHANNEL_MODE_STEREO)
conf.channel_mode = SBC_CHANNEL_MODE_STEREO;
else if (conf.channel_mode & SBC_CHANNEL_MODE_DUAL_CHANNEL)
conf.channel_mode = SBC_CHANNEL_MODE_DUAL_CHANNEL;
else if (conf.channel_mode & SBC_CHANNEL_MODE_MONO)
conf.channel_mode = SBC_CHANNEL_MODE_MONO;
else