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Update a2dp-codec-sbc.c

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This commit is contained in:
JP Guillemin 2021-03-21 09:40:33 +00:00 • committed by Wim Taymans
parent 132786c202
commit 471fffe4a3
1 changed files with 26 additions and 11 deletions
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37
spa/plugins/bluez5/a2dp-codec-sbc.c
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@ -86,36 +86,37 @@ static int codec_fill_caps(const struct a2dp_codec *codec, uint32_t flags,
static uint8_t default_bitpool(uint8_t freq, uint8_t mode, bool xq)
{
/* A2DP spec v1.2 states that all SNK implementation shall handle bitrates
of up to 512 kbps (~ bitpool = 76 stereo, or 2x38 dual channel). */
* of up to 512 kbps (~ bitpool = 86 stereo, or 2x43 dual channel at 44.1KHz
* or ~ bitpool = 78 stereo, or 2x39 dual channel at 48KHz). */
switch (freq) {
case SBC_SAMPLING_FREQ_16000:
case SBC_SAMPLING_FREQ_32000:
return 53;
return 64;
case SBC_SAMPLING_FREQ_44100:
switch (mode) {
case SBC_CHANNEL_MODE_MONO:
case SBC_CHANNEL_MODE_DUAL_CHANNEL:
return xq ? 38 : 31;
return xq ? 43 : 32;
case SBC_CHANNEL_MODE_STEREO:
case SBC_CHANNEL_MODE_JOINT_STEREO:
return xq ? 64 : 53;
return xq ? 86 : 64;
}
return 53;
return xq ? 86 : 64;
case SBC_SAMPLING_FREQ_48000:
switch (mode) {
case SBC_CHANNEL_MODE_MONO:
case SBC_CHANNEL_MODE_DUAL_CHANNEL:
return xq ? 35 : 29;
return xq ? 39 : 29;
case SBC_CHANNEL_MODE_STEREO:
case SBC_CHANNEL_MODE_JOINT_STEREO:
return xq ? 62 : 51;
return xq ? 78 : 58;
}
return 51;
return xq ? 78 : 58;
}
return 53;
return xq ? 86 : 64;
}
static int codec_select_config(const struct a2dp_codec *codec, uint32_t flags,
@ -133,7 +134,15 @@ static int codec_select_config(const struct a2dp_codec *codec, uint32_t flags,
memcpy(&conf, caps, sizeof(conf));
if (conf.frequency & SBC_SAMPLING_FREQ_48000)
if (xq) {
if (conf.frequency & SBC_SAMPLING_FREQ_44100)
conf.frequency = SBC_SAMPLING_FREQ_44100;
else if (conf.frequency & SBC_SAMPLING_FREQ_48000)
conf.frequency = SBC_SAMPLING_FREQ_48000;
else
return -ENOTSUP;
}
else if (conf.frequency & SBC_SAMPLING_FREQ_48000)
conf.frequency = SBC_SAMPLING_FREQ_48000;
else if (conf.frequency & SBC_SAMPLING_FREQ_44100)
conf.frequency = SBC_SAMPLING_FREQ_44100;
@ -147,8 +156,14 @@ static int codec_select_config(const struct a2dp_codec *codec, uint32_t flags,
if (xq) {
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)
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
return -ENOTSUP;
}
if (conf.channel_mode & SBC_CHANNEL_MODE_JOINT_STEREO)
else 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;