camera: mostly working picture transfer infrastructure
This commit is contained in:
Arisotura
parent
036e475c99
commit
7ad4f39587
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@ -31,9 +31,14 @@ Camera* Camera1; // 7A / selfie cam
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u16 ModuleCnt;
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u16 Cnt;
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u8 FrameBuffer[640*480*4];
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/*u8 FrameBuffer[640*480*4];
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u32 FrameLength;
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u32 TransferPos;
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u32 TransferPos;*/
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// pixel data buffer holds a maximum of 1024 words, regardless of how long scanlines are
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u32 DataBuffer[1024];
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u32 BufferReadPos, BufferWritePos;
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Camera* CurCamera;
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// note on camera data/etc intervals
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// on hardware those are likely affected by several factors
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@ -66,9 +71,13 @@ void Reset()
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ModuleCnt = 0; // CHECKME
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Cnt = 0;
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memset(FrameBuffer, 0, 640*480*4);
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/*memset(FrameBuffer, 0, 640*480*4);
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TransferPos = 0;
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FrameLength = 256*192*2; // TODO: make it check frame size, data type, etc
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FrameLength = 256*192*2;*/ // TODO: make it check frame size, data type, etc
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memset(DataBuffer, 0, 1024*sizeof(u32));
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BufferReadPos = 0;
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BufferWritePos = 0;
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CurCamera = nullptr;
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NDS::ScheduleEvent(NDS::Event_DSi_CamIRQ, true, kIRQInterval, IRQ, 0);
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}
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@ -80,9 +89,9 @@ void DoSavestate(Savestate* file)
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file->Var16(&ModuleCnt);
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file->Var16(&Cnt);
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file->VarArray(FrameBuffer, sizeof(FrameBuffer));
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/*file->VarArray(FrameBuffer, sizeof(FrameBuffer));
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file->Var32(&TransferPos);
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file->Var32(&FrameLength);
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file->Var32(&FrameLength);*/
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Camera0->DoSavestate(file);
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Camera1->DoSavestate(file);
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@ -101,63 +110,60 @@ void IRQ(u32 param)
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if (activecam)
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{
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RequestFrame(activecam->Num);
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activecam->StartTransfer();
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if (Cnt & (1<<11))
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NDS::SetIRQ(0, NDS::IRQ_DSi_Camera);
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if (Cnt & (1<<15))
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NDS::ScheduleEvent(NDS::Event_DSi_CamTransfer, false, kTransferStart, Transfer, 0);
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{
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BufferReadPos = 0;
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BufferWritePos = 0;
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CurCamera = activecam;
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NDS::ScheduleEvent(NDS::Event_DSi_CamTransfer, false, kTransferStart, TransferScanline, 0);
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}
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}
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NDS::ScheduleEvent(NDS::Event_DSi_CamIRQ, true, kIRQInterval, IRQ, 0);
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}
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void RequestFrame(u32 cam)
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void TransferScanline(u32 line)
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{
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if (!(Cnt & (1<<13))) printf("CAMERA: !! REQUESTING YUV FRAME\n");
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u32* dstbuf = &DataBuffer[BufferWritePos];
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u32 maxlen = 1024 - BufferWritePos;
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u32 datalen = CurCamera->TransferScanline(dstbuf, maxlen);
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// TODO: picture size, data type, cropping, etc
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// generate test pattern
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// TODO: get picture from platform (actual camera, video file, whatever source)
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for (u32 y = 0; y < 192; y++)
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// TODO HERE:
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// convert to RGB5 if needed
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// crop if needed
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// etc
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// data overrun
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if (datalen > maxlen)
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Cnt |= (1<<4);
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u32 numscan = Cnt & 0x000F;
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if (line >= numscan)
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{
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for (u32 x = 0; x < 256; x++)
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{
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u16* px = (u16*)&FrameBuffer[((y*256) + x) * 2];
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if ((x & 0x8) ^ (y & 0x8))
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*px = 0x8000;
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else
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*px = 0xFC00 | ((y >> 3) << 5);
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}
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}
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}
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void Transfer(u32 pos)
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{
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u32 numscan = (Cnt & 0x000F) + 1;
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u32 numpix = numscan * 256; // CHECKME
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// TODO: present data
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//printf("CAM TRANSFER POS=%d/%d\n", pos, 0x6000*2);
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DSi::CheckNDMAs(0, 0x0B);
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pos += numpix;
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if (pos >= 0x6000*2) // HACK
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{
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// transfer done
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BufferReadPos = 0; // checkme
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BufferWritePos = 0;
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line = 0;
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DSi::CheckNDMAs(0, 0x0B);
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}
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else
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{
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// keep going
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// TODO: must be tweaked such that each block has enough time to transfer
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u32 delay = numpix*2 + 16;
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NDS::ScheduleEvent(NDS::Event_DSi_CamTransfer, false, delay, Transfer, pos);
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BufferWritePos += datalen;
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if (BufferWritePos > 1024) BufferWritePos = 1024;
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line++;
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}
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if (CurCamera->TransferDone())
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return;
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// TODO: must be tweaked such that each block has enough time to transfer
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u32 delay = datalen*4 + 16;
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NDS::ScheduleEvent(NDS::Event_DSi_CamTransfer, false, delay, TransferScanline, line);
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}
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@ -187,20 +193,16 @@ u32 Read32(u32 addr)
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{
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case 0x04004204:
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{
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// TODO
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return 0xFC00801F;
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/*if (!(Cnt & (1<<15))) return 0; // CHECKME
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u32 ret = *(u32*)&FrameBuffer[TransferPos];
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TransferPos += 4;
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if (TransferPos >= FrameLength) TransferPos = 0;
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dorp += 4;
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//if (dorp >= (256*4*2))
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if (TransferPos == 0)
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u32 ret = DataBuffer[BufferReadPos];
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if (Cnt & (1<<15))
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{
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dorp = 0;
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Cnt &= ~(1<<4);
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if (BufferReadPos < 1023)
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BufferReadPos++;
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// CHECKME!!!!
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// also presumably we should set bit4 in Cnt if there's no new data to be read
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}
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return ret;*/
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return ret;
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}
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}
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@ -216,7 +218,7 @@ void Write8(u32 addr, u8 val)
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}
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void Write16(u32 addr, u16 val)
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{printf("ASS CAMERA REG: %08X %04X\n", addr, val);
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{
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switch (addr)
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{
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case 0x04004200:
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@ -255,7 +257,12 @@ void Write16(u32 addr, u16 val)
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}
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Cnt = (Cnt & oldmask) | (val & ~0x0020);
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if (val & (1<<5)) Cnt &= ~(1<<4);
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if (val & (1<<5))
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{
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Cnt &= ~(1<<4);
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BufferReadPos = 0;
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BufferWritePos = 0;
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}
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if ((val & (1<<15)) && !(Cnt & (1<<15)))
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{
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@ -305,8 +312,6 @@ void Camera::DoSavestate(Savestate* file)
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file->Var16(&MiscCnt);
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file->Var16(&MCUAddr);
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// TODO: MCUData??
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file->VarArray(MCURegs, 0x8000);
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}
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@ -323,10 +328,26 @@ void Camera::Reset()
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StandbyCnt = 0x4029; // checkme
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MiscCnt = 0;
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MCUAddr = 0;
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memset(MCURegs, 0, 0x8000);
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// default state is preview mode (checkme)
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MCURegs[0x2104] = 3;
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TransferY = 0;
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memset(FrameBuffer, 0, 640*480*sizeof(u32));
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// test pattern
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for (int y = 0; y < 480; y++)
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{
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for (int x = 0; x < 640; x++)
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{
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u32 color = Num ? 0x00FF0000 : 0x000000FF;
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if ((x & 0x10) ^ (y & 0x10)) color |= 0x0000FF00;
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FrameBuffer[y*640 + x] = color;
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}
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}
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}
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bool Camera::IsActivated()
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@ -338,6 +359,105 @@ bool Camera::IsActivated()
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}
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void Camera::StartTransfer()
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{
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TransferY = 0;
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u8 state = MCURegs[0x2104];
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if (state == 3) // preview
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{
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FrameWidth = *(u16*)&MCURegs[0x2703];
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FrameHeight = *(u16*)&MCURegs[0x2705];
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FrameReadMode = *(u16*)&MCURegs[0x2717];
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FrameFormat = *(u16*)&MCURegs[0x2755];
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}
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else if (state == 7) // capture
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{
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FrameWidth = *(u16*)&MCURegs[0x2707];
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FrameHeight = *(u16*)&MCURegs[0x2709];
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FrameReadMode = *(u16*)&MCURegs[0x272D];
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FrameFormat = *(u16*)&MCURegs[0x2757];
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}
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else
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{
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FrameWidth = 0;
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FrameHeight = 0;
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FrameReadMode = 0;
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FrameFormat = 0;
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}
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}
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bool Camera::TransferDone()
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{
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return TransferY >= FrameHeight;
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}
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int Camera::TransferScanline(u32* buffer, int maxlen)
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{
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if (TransferY >= FrameHeight)
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return 0;
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if (FrameWidth > 640 || FrameHeight > 480 ||
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FrameWidth < 2 || FrameHeight < 2 ||
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(FrameWidth & 1))
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{
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// TODO work out something for these cases?
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printf("CAM%d: invalid resolution %dx%d\n", Num, FrameWidth, FrameHeight);
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//memset(buffer, 0, width*height*sizeof(u16));
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return 0;
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}
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// TODO: non-YUV pixel formats and all
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int retlen = FrameWidth >> 1;
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int sy = (TransferY * 480) / FrameHeight;
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for (int dx = 0; dx < retlen; dx++)
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{
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if (dx >= maxlen) break;
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// convert to YUV
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// Y = 0.299R + 0.587G + 0.114B
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// U = 0.492 (B-Y)
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// V = 0.877 (R-Y)
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int sx;
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sx = ((dx*2) * 640) / FrameWidth;
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u32 pixel1 = FrameBuffer[sy*640 + sx];
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sx = ((dx*2 + 1) * 640) / FrameWidth;
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u32 pixel2 = FrameBuffer[sy*640 + sx];
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u32 r1 = (pixel1 >> 16) & 0xFF;
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u32 g1 = (pixel1 >> 8) & 0xFF;
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u32 b1 = pixel1 & 0xFF;
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u32 r2 = (pixel1 >> 16) & 0xFF;
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u32 g2 = (pixel1 >> 8) & 0xFF;
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u32 b2 = pixel1 & 0xFF;
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u32 y1 = ((r1 * 19595) + (g1 * 38470) + (b1 * 7471)) >> 16;
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u32 u1 = ((b1 - y1) * 32244) >> 16;
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u32 v1 = ((r1 - y1) * 57475) >> 16;
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u32 y2 = ((r2 * 19595) + (g2 * 38470) + (b2 * 7471)) >> 16;
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u32 u2 = ((b2 - y2) * 32244) >> 16;
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u32 v2 = ((r2 - y2) * 57475) >> 16;
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// huh
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u1 = (u1 + u2) >> 1;
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v1 = (v1 + v2) >> 1;
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buffer[dx] = y1 | (u1 << 8) | (y2 << 16) | (u1 << 24);
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}
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TransferY++;
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return retlen;
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}
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void Camera::I2C_Start()
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{
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}
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@ -496,18 +616,6 @@ void Camera::I2C_WriteReg(u16 addr, u16 val)
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u8 Camera::MCU_Read(u16 addr)
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{
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addr &= 0x7FFF;
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printf("CAM%d MCU READ %04X -- %08X\n", Num, addr, NDS::GetPC(1));
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switch (addr)
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{
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//case 0x2104: // SEQ_STATUS
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// TODO!!!
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// initial value 3
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// value 7 after writing 2 to 2103
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// preview mode: 256x512, DMA chunk size = 512
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// capture mode: 640x480, DMA chunk size = 320
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//return 7;
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}
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return MCURegs[addr];
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}
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@ -515,7 +623,6 @@ u8 Camera::MCU_Read(u16 addr)
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void Camera::MCU_Write(u16 addr, u8 val)
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{
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addr &= 0x7FFF;
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printf("CAM%d MCU WRITE %04X %02X\n", Num, addr, val);
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switch (addr)
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{
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@ -526,6 +633,9 @@ void Camera::MCU_Write(u16 addr, u8 val)
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else if (val != 5 && val != 6)
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printf("CAM%d: atypical SEQ_CMD %04X\n", Num, val);
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return;
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case 0x2104: // SEQ_STATE, read-only
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return;
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}
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MCURegs[addr] = val;
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@ -36,9 +36,8 @@ void Reset();
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void DoSavestate(Savestate* file);
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void IRQ(u32 param);
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void RequestFrame(u32 cam);
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void Transfer(u32 pos);
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void TransferScanline(u32 line);
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u8 Read8(u32 addr);
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u16 Read16(u32 addr);
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@ -58,6 +57,12 @@ public:
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void Reset();
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bool IsActivated();
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void StartTransfer();
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bool TransferDone();
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// lengths in words
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int TransferScanline(u32* buffer, int maxlen);
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void I2C_Start();
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u8 I2C_Read(bool last);
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void I2C_Write(u8 val, bool last);
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@ -80,12 +85,15 @@ private:
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u16 MiscCnt;
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u16 MCUAddr;
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u16* MCUData;
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u8 MCURegs[0x8000];
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u8 MCU_Read(u16 addr);
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void MCU_Write(u16 addr, u8 val);
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u16 FrameWidth, FrameHeight;
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u16 FrameReadMode, FrameFormat;
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int TransferY;
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u32 FrameBuffer[640*480];
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};
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}
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@ -723,7 +723,7 @@ bool DoSavestate_Scheduler(Savestate* file)
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DSi_SDHost::FinishTX,
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DSi_NWifi::MSTimer,
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DSi_CamModule::IRQ,
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DSi_CamModule::Transfer,
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DSi_CamModule::TransferScanline,
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DSi_DSP::DSPCatchUpU32,
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nullptr
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