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Lines 490-512
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| 490 |
static void set_volume (AC97LinkState *s, int index, |
490 |
static void set_volume (AC97LinkState *s, int index, |
| 491 |
audmixerctl_t mt, uint32_t val) |
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audmixerctl_t mt, uint32_t val) |
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{ |
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{ |
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int mute = (val >> MUTE_SHIFT) & 1; |
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int mute; |
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uint8_t rvol = VOL_MASK - (val & VOL_MASK); |
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uint8_t rvol, lvol; |
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uint8_t lvol = VOL_MASK - ((val >> 8) & VOL_MASK); |
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rvol = 255 * rvol / VOL_MASK; |
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lvol = 255 * lvol / VOL_MASK; |
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# ifdef SOFT_VOLUME |
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if (index == AC97_Master_Volume_Mute) |
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AUD_set_volume_out (s->voice_po, mute, lvol, rvol); |
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else |
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AUD_set_volume (mt, &mute, &lvol, &rvol); |
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# else |
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AUD_set_volume (mt, &mute, &lvol, &rvol); |
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# endif |
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rvol = VOL_MASK - ((VOL_MASK * rvol) / 255); |
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lvol = VOL_MASK - ((VOL_MASK * lvol) / 255); |
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/* |
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/* |
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* From AC'97 SoundMax Codec AD1981A: "Because AC '97 defines 6-bit volume registers, to |
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* From AC'97 SoundMax Codec AD1981A: "Because AC '97 defines 6-bit volume registers, to |
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Lines 521-526
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| 521 |
if (val & RT_BIT(13)) |
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if (val & RT_BIT(13)) |
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val |= RT_BIT(12) | RT_BIT(11) | RT_BIT(10) | RT_BIT(9) | RT_BIT(8); |
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val |= RT_BIT(12) | RT_BIT(11) | RT_BIT(10) | RT_BIT(9) | RT_BIT(8); |
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/* |
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* 5-bit volume, behave like one. |
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*/ |
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val &= ~(RT_BIT(5) | RT_BIT(13)); |
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mute = (val >> MUTE_SHIFT) & 1; |
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rvol = (255 * (VOL_MASK - (val & VOL_MASK))) / VOL_MASK; |
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lvol = (255 * (VOL_MASK - ((val >> 8) & VOL_MASK))) / VOL_MASK; |
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# ifdef SOFT_VOLUME |
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if (index == AC97_Master_Volume_Mute) |
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AUD_set_volume_out (s->voice_po, mute, lvol, rvol); |
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else |
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AUD_set_volume (mt, &mute, &lvol, &rvol); |
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# else |
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AUD_set_volume (mt, &mute, &lvol, &rvol); |
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# endif |
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mixer_store (s, index, val); |
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mixer_store (s, index, val); |
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} |
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} |
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