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Added range checking when getting/setting mixer weights

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This commit is contained in:
Ross Owen
2023-02-08 12:04:38 +00:00
parent f80d7647e0
commit 58f691078d
1 changed files with 19 additions and 10 deletions
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27
lib_xua/src/core/endpoint0/xua_ep0_uacreqs.xc
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@@ -812,16 +812,19 @@ int AudioClassRequests_2(XUD_ep ep0_out, XUD_ep ep0_in, USB_SetupPacket_t &sp, c
return result; return result;
} }
mixer1Weights[cn] = (buffer, unsigned char[])[0] | (buffer, unsigned char[])[1] << 8; if(cn < sizeof(mixer1Weights)/sizeof(mixer1Weights[0]))
if (mixer1Weights[cn] != 0x8000)
{ {
weightMult = db_to_mult(mixer1Weights[cn], XUA_MIXER_DB_FRAC_BITS, XUA_MIXER_MULT_FRAC_BITS); mixer1Weights[cn] = (buffer, unsigned char[])[0] | (buffer, unsigned char[])[1] << 8;
}
if (!isnull(c_mix_ctl)) if (mixer1Weights[cn] != 0x8000)
{ {
UpdateMixerWeight(c_mix_ctl, (cn) % 8, (cn) / 8, weightMult); weightMult = db_to_mult(mixer1Weights[cn], XUA_MIXER_DB_FRAC_BITS, XUA_MIXER_MULT_FRAC_BITS);
}
if (!isnull(c_mix_ctl))
{
UpdateMixerWeight(c_mix_ctl, (cn) % 8, (cn) / 8, weightMult);
}
} }
/* Send 0 Length as status stage */ /* Send 0 Length as status stage */
@@ -829,7 +832,13 @@ int AudioClassRequests_2(XUD_ep ep0_out, XUD_ep ep0_in, USB_SetupPacket_t &sp, c
} }
else else
{ {
short weight = mixer1Weights[cn]; short weight = 0x8000;
if(cn < sizeof(mixer1Weights)/sizeof(mixer1Weights[0]))
{
weight = mixer1Weights[cn];
}
(buffer, unsigned char[])[0] = weight & 0xff; (buffer, unsigned char[])[0] = weight & 0xff;
(buffer, unsigned char[])[1] = (weight >> 8) & 0xff; (buffer, unsigned char[])[1] = (weight >> 8) & 0xff;