diff options
| -rw-r--r-- | dxr3interface.c | 57 | ||||
| -rw-r--r-- | dxr3interface.h | 2 |
2 files changed, 56 insertions, 3 deletions
diff --git a/dxr3interface.c b/dxr3interface.c index 25abc77..b866a9c 100644 --- a/dxr3interface.c +++ b/dxr3interface.c @@ -1191,10 +1191,63 @@ void cDxr3Interface::WriteRegister(int registernum, int val) // maybe we should copy this routine into em8300 driver // ================================== -// -void cDxr3Interface::Dxr3CopyYUVData(int pos, int *dst, int length) +//! It appears that the follow routine copies length bytes to memory pointed to +//! by dst. +//! Most likely, pos contains some kind of buffer offset. +char cDxr3Interface::Dxr3CopyYUVData(int pos, int *dst, int length) { + int l1; + + for (l1 = 0x1000; (l1) ;--l1) + { + if (ReadRegister(0x1c1a) == 0) + break; + } + + if (l1 == 0) + { + //printf("Borked!\n"); + exit(0); + } + + WriteRegister(0x1c50, 8); + WriteRegister(0x1c51, pos & 0xffff); + WriteRegister(0x1c52, pos >>16); + WriteRegister(0x1c53, length); + WriteRegister(0x1c54, length); + WriteRegister(0x1c55, 0); + WriteRegister(0x1c56, 1); + WriteRegister(0x1c57, 1); + WriteRegister(0x1c58, pos & 0xffff); + WriteRegister(0x1c59, 0); + WriteRegister(0x1c5a, 1); + + int l2 = 0; + for( l2=0; l2 < (length>>2) ; ++l2) + { + *dst++ = ReadRegister(0x11800); + } + + switch( length % 4 ) + { + case 3: + *dst++ = ReadRegister(0x11000); + break; + case 2: + *dst++ = ReadRegister(0x10800); + break; + case 1: + *dst++ = ReadRegister(0x10000); + break; + } + + for (l1 = 0x1000; (l1) ; --l1) + { + if (ReadRegister(0x1c1a) == 0) + return 1; + } + return 0; } // ================================== diff --git a/dxr3interface.h b/dxr3interface.h index cfd69ca..a542c15 100644 --- a/dxr3interface.h +++ b/dxr3interface.h @@ -141,7 +141,7 @@ private: void WriteRegister(int registernum, int val); // maybe we should copy this routine into em8300 driver - void Dxr3CopyYUVData(int pos, int *dst, int length); + char Dxr3CopyYUVData(int pos, int *dst, int length); protected: static cMutex* m_pMutex; ///< mutex for dxr3interface |