DSP Services
Revision as of 07:40, 29 March 2015 by Purpasmart (talk | contribs) (Undo revision 12146 by Purpasmart (talk))
DSP service "dsp::DSP"
| Command Header | Description | |
|---|---|---|
| 0x00010040 | RecvData(chan 0-3) | |
| 0x00010080 | ???? | |
| 0x00020000 | ???? | |
| 0x00020040 | RecvDataIsReady(chan 0-3) | |
| 0x00030080 | SendData(chan 0-3) | |
| 0x00040040 | SendDataIsEmpty(chan 0-3) | |
| 0x00050100 | ? | |
| 0x0006... | ? | |
| 0x0007.... | WriteReg0x10 SetSemaphore | |
| 0x00080000 | GetSemaphore | |
| 0x00080082 | ???? | |
| 0x00090040 | ClearSemaphore | |
| 0x000A.... | WriteReg0x18 | |
| 0x000B0000 | CheckSemaphoreRequest | |
| 0x000C0000 | ???? | |
| 0x000C0040 | ConvertProcessAddressFromDspDram | |
| 0x000D0082 | WriteProcessPipe | |
| 0x000E0080 | ???? | |
| 0x001000C0 | ReadPipeIfPossible | |
| 0x001100C2 | LoadComponent. This requires RSA-signed DSP firmware specified via the input buffer for this command, the firmware data is eventually written to DSPmem+0(0x1FF00000). | |
| 0x00120000 | UnloadComponent | |
| 0x00130082 | FlushDataCache (The buffer must be located in the 0x14000000 region) | |
| 0x00140082 | InvalidateDCache (The buffer must be located in either the 0x14000000 region, or the DSP memory region) | |
| 0x00150082 | RegisterInterruptEvents(param0, param1, 0, eventhandle) | |
| 0x00160000 | GetSemaphoreEventHandle | |
| 0x00170040 | SetSemaphoreMask | |
| 0x00180040 | GetPhysicalAddress (0x14000000+ -> 0x20000000+, 0x1FF00000+ -> 0x1FF00000+, 0x08000000-0x0E000000 -> 0x00000000+, 0 otherwise) | |
| 0x00190040 | GetVirtualAddress (0x20000000+ -> 0x14000000+, 0x1FF00000+ -> 0x1FF00000+, 0 otherwise) | |
| 0x001A0042 | SetIirFilterI2S1. Wrapper for cdc:DSP cmd 1 | |
| 0x001B0042 | SetIirFilterI2S1. Wrapper for cdc:DSP cmd 2 | |
| 0x001C0082 | SetIirFilterEQ. Wrapper for cdc:DSP cmd 3 | |
| 0x001D.... | Wrapper for cdc:DSP cmd 4 | |
| 0x001E.... | Wrapper for cdc:DSP cmd 5 | |
| 0x001F0000 | GetHeadphoneStatus. Wrapper for cdc:DSP cmd 6 | |
| 0x0020.... | Wrapper for cdc:DSP cmd 8 | |
| 0x00210000 | GetIsDspOccupied returns a byte (can be 1 or 0) can be set to 1 in LoadComponent | |
| 0x080200C2 | ???? |
This is the main service for playing audio. The CSND service can be used for playing audio as well, however most processes use this DSP service for playing audio. The DSP and CSND hardware can play audio simultaneously.