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| digic8:registers [2022/02/20 14:53] – [LV peaking (Highlights / zebra)] kitor | digic8:registers [2022/02/20 16:01] – [LV peaking (Highlights / zebra)] kitor |
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| ^ Address ^ Output ^ Type ^ Controls what? ^ | ^ Address ^ Output ^ Type ^ Controls what? ^ |
| | ''0xD0300520'' | HDMI | overexpo | enable / disable | | | ''0xD0300520'' | HDMI | zebra | enable / disable | |
| | ''0xD0300550'' | HDMI | underexpo | enable / disable | | |
| | ''0xD0300750'' | HDMI | overexpo | threshold and style | | | ''0xD0300750'' | HDMI | overexpo | threshold and style | |
| | ''0xD0300754'' | HDMI | overexpo | color | | | ''0xD0300754'' | HDMI | overexpo | color | |
| | ''0xD0300758'' | HDMI | underexpo | threshold and style | | | ''0xD0300758'' | HDMI | underexpo | threshold and style | |
| | ''0xD030075C'' | HDMI | underexpo | color | | | ''0xD030075C'' | HDMI | underexpo | color | |
| | ''0xD0304220'' | LCD/EVF | overexpo | enable / disable | | | ''0xD0304220'' | LCD/EVF | zebra | enable / disable | |
| | ''0xD0304250'' | LCD/EVF | underexpo | enable / disable | | |
| | ''0xD0304488'' | LCD/EVF | overexpo | threshold and style | | | ''0xD0304488'' | LCD/EVF | overexpo | threshold and style | |
| | ''0xD030448C'' | LCD/EVF | overexpo | color | | | ''0xD030448C'' | LCD/EVF | overexpo | color | |
| Registers used by ''DispVram'' State object to control overexposure highlighting feature. | Registers used by ''DispVram'' State object to control overexposure highlighting feature. |
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| HDMI registers don't work as for now. Threshold/color registers accepts values as expected. Enable/disable is ignored. | Directly poking HDMI registers doesn't work (yet). For some reason, zebra enable/disable write is ignored/overwritten. It works while enabled via ''DispVram'' state change request. |
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| When observed in Play menu (with stock overexpo warning enabled), enable register changes as expected. So there's a piece of puzzle still missing. | On EOS R it was possible to display independently configured zebras on LCD and HDMI, while in CleanHDMI mode. |
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| Code suggests there are more registers: | |
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| ^ Output ^ Reg ^ Addresses ^ Range ^ | |
| | HDMI(?) | Enable | ''0xD0300520 + 0x30 * n'' | n∈⟨0,7⟩ | | |
| | HDMI(?) | Threshold | ''0xD0300750 + 0x8 * n'' | n∈⟨0,5⟩ | | |
| | HDMI(?) | Color | ''0xD0300754 + 0x8 * n'' | n∈⟨0,5⟩ | | |
| | LCD(?) | Enable | ''0xD0304220 + 0x30 * n'' | n∈⟨0,7⟩ | | |
| | LCD(?) | Threshold | ''0xD0304488 + 0x8 * n'' | n∈⟨0,5⟩ | | |
| | LCD(?) | Color | ''0xD030448C + 0x8 * n'' | n∈⟨0,5⟩ | | |
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| For ''n > 1'' there's no visible difference. | |
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| For ''n > 1'' Threshold registers accept both thresholds at the same time, but since those have no observed effects on displayed image - meaning is unknown. | |
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| ===Enable register=== | ===Enable register=== |
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| Controls color of highlight overlays. ''??YYUUVV'' format. Canon code defaults to black (''00008080'') | Controls color of highlight overlays. ''??YYUUVV'' format. Canon code defaults to black (''00008080'') |
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| | ===More registers=== |
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| | Code suggests there are more registers: |
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| | ^ Output ^ Reg ^ Addresses ^ Range ^ |
| | | HDMI | Enable | ''0xD0300520 + 0x30 * n'' | n∈⟨0,7⟩ | |
| | | LCD | Enable | ''0xD0304220 + 0x30 * n'' | n∈⟨0,7⟩ | |
| | | HDMI | Threshold | ''0xD0300750 + 0x8 * m'' | m∈⟨0,5⟩ | |
| | | HDMI | Color | ''0xD0300754 + 0x8 * m'' | m∈⟨0,5⟩ | |
| | | LCD | Threshold | ''0xD0304488 + 0x8 * m'' | m∈⟨0,5⟩ | |
| | | LCD | Color | ''0xD030448C + 0x8 * m'' | m∈⟨0,5⟩ | |
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| | n values above 0 and m values above 1 are not understood. There's no visible difference on screen. |
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| | For ''m > 1'' Threshold registers accept both under and overexposure thresholds at the same time, but since those have no visible effects on displayed image - meaning is unknown. |
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| | Guess: maybe ''m > 1'' are in use for 10 bit / HDR mode? |
| ==== Audio ==== | ==== Audio ==== |
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