3dbrew

Changes

DSP Memory Region (edit)

Revision as of 17:58, 23 January 2016

1,058 bytes added ,  17:58, 23 January 2016
Added Channel Context
Line 84: Line 84:  
| 0x2
 
| 0x2
 
| Frame Counter
 
| Frame Counter
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|}
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 +
== Channel Config ==
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 +
A 192 byte long structure. There are 24 of them.
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{| class="wikitable"
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|-
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| Offset
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| Type
 +
| Description
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|-
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| 0
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| u32
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| Dirty flags
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|-
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| 4
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| 70 bytes
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| TODO
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|-
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| 74
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| u16
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| Bitmap of which buffers in queue are valid
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|-
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| 76
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| Buffer[4]
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| Buffer queue
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|-
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| 156
 +
| u32
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| -
 +
|-
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| 160
 +
| u16
 +
| Is Active
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|-
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| 162
 +
| u16
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| Config Serial Number (Userland)
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|-
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| 164
 +
| 8
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| TODO
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|-
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| 172
 +
| u32
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| Physical address of current buffer
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|-
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| 176
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| u32
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| Number of samples in current buffer
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|-
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| 180
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| u16
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| bits[0:1]: 1 = mono, 2 = stereo; bits[2:3]: buffer format
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|-
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| 182
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| u16
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| ADPCM predictor
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|-
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| 184
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| s16
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| ADPCM yn1
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|-
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| 186
 +
| s16
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| ADPCM yn2
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|-
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| 188
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| u16
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| bit[0]: Has ADPCM data?; bit[1]: Is looping?
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|-
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| 190
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| u16
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| Buffer Id of this current buffer
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|}
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=== Buffer ===
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{| class="wikitable"
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|-
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| Offset
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| Type
 +
| Description
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|-
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| 0
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| u32
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| Physical Address
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|-
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| 4
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| u32
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| Sample Count
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|-
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| 8
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| u16
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| ADPCM P/S
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|-
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| 10
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| s16[2]
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| ADPCM yn[1,2]
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|-
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| 14
 +
| u8
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| Has ADPCM?
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|-
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| 15
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| u8
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| Looping?
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|-
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| 16
 +
| u16
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| Buffer Id
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|-
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| 18
 +
| u16
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| -
 
|}
 
|}
Merry
50

edits

Retrieved from "https://www.3dbrew.org/wiki/Special:MobileDiff/15593"