Audio services: Difference between revisions
m "has been" -> "is being" |
Lay out the Opus multi stream parameters as a struct. Makes it much nicer to read. |
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Takes a type-0x19 input buffer, an u32 '''WorkBufferSize''' and a TransferMemory handle for '''WorkBuffer'''. Returns an [[#IHardwareOpusDecoder]] object. The TransferMemory is created by the user-process with permissions=0. | Takes a type-0x19 input buffer, an u32 '''WorkBufferSize''' and a TransferMemory handle for '''WorkBuffer'''. Returns an [[#IHardwareOpusDecoder]] object. The TransferMemory is created by the user-process with permissions=0. | ||
The input buffer is a | The input buffer is a [[#MultiStreamParameters]] struct. The user-process initializes this struct the same way as [[#GetWorkBufferSizeForMultiStream]], except that an u8-array specified by the user is copied to +0x10 with size '''ChannelCount''', when '''ChannelCount''' above 0. | ||
== GetWorkBufferSizeForMultiStream == | == GetWorkBufferSizeForMultiStream == | ||
Takes a type-0x19 input buffer. Returns the u32 required size for the decoder's work buffer. Official user-processes align the output size to page-alignment. | Takes a type-0x19 input buffer. Returns the u32 required size for the decoder's work buffer. Official user-processes align the output size to page-alignment. | ||
The input buffer is a | The input buffer is a [[#MultiStreamParameters]] struct. | ||
== MultiStreamParameters == | |||
{| class="wikitable" border="1" | |||
|- | |||
! Offset | |||
! Size | |||
! Description | |||
|- | |||
| 0x0 | |||
| 0x4 | |||
| Sample rate | |||
|- | |||
| 0x4 | |||
| 0x4 | |||
| Number of channels | |||
|- | |||
| 0x8 | |||
| 0x4 | |||
| Number of streams | |||
|- | |||
| 0xC | |||
| 0x4 | |||
| Number of stereo streams | |||
|- | |||
| 0x10 | |||
| 0x100 | |||
| u8 array of channel mappings | |||
|} | |||
== IHardwareOpusDecoder == | == IHardwareOpusDecoder == | ||