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MDEC: Refactor buffer handling, fixes FF9 FMVs

This commit is contained in:
Connor McLaughlin 2019-10-18 00:40:07 +10:00
parent 6b4298541c
commit c8bbd25f59
3 changed files with 323 additions and 232 deletions
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510
src/core/mdec.cpp
View File

@ -31,7 +31,7 @@ bool MDEC::DoState(StateWrapper& sw)
sw.Do(&m_data_in_fifo);
sw.Do(&m_data_out_fifo);
sw.Do(&m_command);
sw.Do(&m_remaining_words);
sw.Do(&m_remaining_halfwords);
sw.Do(&m_iq_uv);
sw.Do(&m_iq_y);
sw.Do(&m_scale_table);
@ -39,6 +39,9 @@ bool MDEC::DoState(StateWrapper& sw)
sw.Do(&m_current_block);
sw.Do(&m_current_coefficient);
sw.Do(&m_current_q_scale);
sw.Do(&m_block_rgb);
sw.Do(&m_block_copy_out_ticks);
sw.Do(&m_block_copy_out_pending);
return !sw.HasError();
}
@ -52,7 +55,7 @@ u32 MDEC::ReadRegister(u32 offset)
case 4:
{
Log_DebugPrintf("MDEC status register -> 0x%08X", m_status.bits);
Log_TracePrintf("MDEC status register -> 0x%08X", m_status.bits);
return m_status.bits;
}
@ -84,8 +87,7 @@ void MDEC::WriteRegister(u32 offset, u32 value)
m_enable_dma_in = cr.enable_dma_in;
m_enable_dma_out = cr.enable_dma_out;
UpdateStatusRegister();
UpdateDMARequest();
UpdateStatus();
return;
}
@ -99,15 +101,35 @@ void MDEC::WriteRegister(u32 offset, u32 value)
void MDEC::DMARead(u32* words, u32 word_count)
{
// TODO: Make faster
for (u32 i= 0; i < word_count; i++)
words[i] = ReadDataRegister();
do
{
const u32 words_to_read = std::min(word_count, m_data_out_fifo.GetSize());
if (words_to_read > 0)
{
m_data_out_fifo.PopRange(words, words_to_read);
words += words_to_read;
word_count -= words_to_read;
}
else
{
UpdateStatus();
break;
}
ExecutePendingCommand();
} while (word_count > 0);
}
void MDEC::DMAWrite(const u32* words, u32 word_count)
{
for (u32 i = 0; i < word_count; i++)
WriteCommandRegister(words[i]);
do
{
const u32 halfwords_to_write = std::min(word_count * 2, m_data_in_fifo.GetSpace() & ~u32(2));
m_data_in_fifo.PushRange(reinterpret_cast<const u16*>(words), halfwords_to_write);
words += halfwords_to_write / 2;
word_count -= halfwords_to_write / 2;
ExecutePendingCommand();
} while (word_count > 0);
}
void MDEC::SoftReset()
@ -117,29 +139,32 @@ void MDEC::SoftReset()
m_enable_dma_out = false;
m_data_in_fifo.Clear();
m_data_out_fifo.Clear();
UpdateStatusRegister();
UpdateDMARequest();
m_command = Command::None;
m_remaining_halfwords = 0;
m_current_block = 0;
m_current_coefficient = 64;
m_current_q_scale = 0;
m_block_copy_out_ticks = TICKS_PER_BLOCK;
m_block_copy_out_pending = false;
UpdateStatus();
}
void MDEC::UpdateStatusRegister()
void MDEC::UpdateStatus()
{
m_status.data_out_fifo_empty = m_data_out_fifo.IsEmpty();
m_status.data_in_fifo_full = m_data_in_fifo.IsFull();
m_status.command_busy = false;
m_status.parameter_words_remaining = Truncate16(m_remaining_words - 1);
m_status.command_busy = m_command != Command::None;
m_status.parameter_words_remaining = Truncate16((m_remaining_halfwords / 2) - 1);
m_status.current_block = (m_current_block + 4) % NUM_BLOCKS;
}
void MDEC::UpdateDMARequest()
{
// we always want data in if it's enabled
const bool data_in_request = m_enable_dma_in && m_data_in_fifo.GetSpace() >= (32 * 2) && !m_data_out_fifo.IsFull();
m_status.data_in_request = data_in_request;
m_dma->SetRequest(DMA::Channel::MDECin, data_in_request);
// we only want to send data out if we have some in the fifo
const bool data_out_request = m_enable_dma_out && !m_data_out_fifo.IsEmpty();
const bool data_out_request = m_enable_dma_out && m_data_out_fifo.GetSize() >= 32;
m_status.data_out_request = data_out_request;
m_dma->SetRequest(DMA::Channel::MDECout, data_out_request);
}
@ -148,21 +173,25 @@ u32 MDEC::ReadDataRegister()
{
if (m_data_out_fifo.IsEmpty())
{
Execute();
if (m_data_out_fifo.IsEmpty())
// Stall the CPU until we're done processing.
if (m_block_copy_out_pending)
{
Log_WarningPrintf("MDEC data out FIFO empty on read");
Log_DevPrint("MDEC data out FIFO empty on read - stalling CPU");
m_system->StallCPU(m_block_copy_out_ticks);
Execute(m_block_copy_out_ticks);
}
else
{
Log_WarningPrintf("MDEC data out FIFO empty on read and no data processing");
return UINT32_C(0xFFFFFFFF);
}
}
const u32 value = m_data_out_fifo.Pop();
if (m_data_out_fifo.IsEmpty())
{
UpdateStatusRegister();
UpdateDMARequest();
}
ExecutePendingCommand();
else
UpdateStatus();
return value;
}
@ -171,127 +200,156 @@ void MDEC::WriteCommandRegister(u32 value)
{
Log_TracePrintf("MDEC command/data register <- 0x%08X", value);
if (m_command == Command::None)
{
// first word
const CommandWord cw{value};
m_command = cw.command;
m_status.data_output_depth = cw.data_output_depth;
m_status.data_output_signed = cw.data_output_signed;
m_status.data_output_bit15 = cw.data_output_bit15;
m_data_out_fifo.Clear();
m_data_in_fifo.Push(Truncate16(value));
m_data_in_fifo.Push(Truncate16(value >> 16));
switch (cw.command)
{
case Command::DecodeMacroblock:
m_remaining_words = ZeroExtend32(cw.parameter_word_count.GetValue());
break;
case Command::SetIqTab:
m_remaining_words = 16 + (((value & 1) != 0) ? 16 : 0);
break;
case Command::SetScale:
m_remaining_words = 32;
break;
default:
Panic("Unknown command");
break;
}
Log_DebugPrintf("MDEC command: 0x%08X (%u, %u words in parameter, %u expected)", cw.bits,
ZeroExtend32(static_cast<u8>(cw.command.GetValue())),
ZeroExtend32(cw.parameter_word_count.GetValue()), m_remaining_words);
}
else
{
DebugAssert(m_remaining_words > 0);
m_data_in_fifo.Push(Truncate16(value));
m_data_in_fifo.Push(Truncate16(value >> 16));
m_remaining_words--;
}
Execute();
ExecutePendingCommand();
}
void MDEC::Execute()
void MDEC::Execute(TickCount ticks)
{
switch (m_command)
if (!m_block_copy_out_pending)
return;
m_block_copy_out_ticks -= ticks;
if (m_block_copy_out_ticks <= 0)
{
case Command::DecodeMacroblock:
{
if (!HandleDecodeMacroblockCommand())
{
UpdateStatusRegister();
UpdateDMARequest();
return;
}
}
break;
DebugAssert(m_command == Command::DecodeMacroblock);
CopyOutBlock();
case Command::SetIqTab:
{
if (!HandleSetQuantTableCommand())
{
UpdateStatusRegister();
UpdateDMARequest();
return;
}
}
break;
if (m_remaining_halfwords == 0)
EndCommand();
else
ExecutePendingCommand();
}
}
case Command::SetScale:
{
if (!HandleSetScaleCommand())
{
UpdateStatusRegister();
UpdateDMARequest();
return;
}
}
break;
default:
{
UpdateStatusRegister();
UpdateDMARequest();
return;
}
break;
void MDEC::ExecutePendingCommand()
{
if (m_block_copy_out_pending)
{
// can't do anything while waiting
UpdateStatus();
return;
}
m_data_in_fifo.Clear();
while (!m_data_in_fifo.IsEmpty())
{
DebugAssert(!m_block_copy_out_pending);
if (m_command == Command::None)
{
// first word
const CommandWord cw{ZeroExtend32(m_data_in_fifo.Peek(0)) | (ZeroExtend32(m_data_in_fifo.Peek(1)) << 16)};
m_command = cw.command;
m_status.data_output_depth = cw.data_output_depth;
m_status.data_output_signed = cw.data_output_signed;
m_status.data_output_bit15 = cw.data_output_bit15;
m_data_in_fifo.Remove(2);
m_data_out_fifo.Clear();
u32 num_words;
switch (cw.command)
{
case Command::DecodeMacroblock:
num_words = ZeroExtend32(cw.parameter_word_count.GetValue());
break;
case Command::SetIqTab:
num_words = 16 + (((cw.bits & 1) != 0) ? 16 : 0);
break;
case Command::SetScale:
num_words = 32;
break;
default:
Panic("Unknown command");
num_words = 0;
break;
}
m_remaining_halfwords = num_words * 2;
Log_DebugPrintf("MDEC command: 0x%08X (%u, %u words in parameter, %u expected)", cw.bits,
ZeroExtend32(static_cast<u8>(cw.command.GetValue())),
ZeroExtend32(cw.parameter_word_count.GetValue()), num_words);
}
switch (m_command)
{
case Command::DecodeMacroblock:
{
if (HandleDecodeMacroblockCommand())
{
// block decoded, waiting to copy out
UpdateStatus();
return;
}
// data needed
if (m_remaining_halfwords == 0)
{
// but no more data expected, abort command here
EndCommand();
}
else
{
// waiting for data
UpdateStatus();
}
return;
}
case Command::SetIqTab:
{
if (m_data_in_fifo.GetSize() < m_remaining_halfwords)
{
UpdateStatus();
return;
}
HandleSetQuantTableCommand();
EndCommand();
}
break;
case Command::SetScale:
{
if (m_data_in_fifo.GetSize() < m_remaining_halfwords)
{
UpdateStatus();
return;
}
HandleSetScaleCommand();
EndCommand();
}
break;
default:
UnreachableCode();
return;
}
}
}
void MDEC::EndCommand()
{
m_command = Command::None;
m_current_block = 0;
m_current_coefficient = 64;
m_current_q_scale = 0;
UpdateStatusRegister();
UpdateDMARequest();
UpdateStatus();
}
bool MDEC::HandleDecodeMacroblockCommand()
{
if (m_status.data_output_depth <= DataOutputDepth_8Bit)
{
while (!m_data_in_fifo.IsEmpty())
{
if (!DecodeMonoMacroblock())
break;
}
return m_data_in_fifo.IsEmpty() && m_remaining_words == 0;
}
return DecodeMonoMacroblock();
else
{
while (!m_data_in_fifo.IsEmpty())
{
if (!DecodeColoredMacroblock())
break;
}
return m_data_in_fifo.IsEmpty() && m_remaining_words == 0;
}
return DecodeColoredMacroblock();
}
bool MDEC::DecodeMonoMacroblock()
@ -313,48 +371,11 @@ bool MDEC::DecodeMonoMacroblock()
IDCT(m_blocks[0].data());
std::array<u8, 64> out_r;
y_to_mono(m_blocks[0], out_r);
y_to_mono(m_blocks[0]);
switch (m_status.data_output_depth)
{
case DataOutputDepth_4Bit:
{
const u8* in_ptr = out_r.data();
for (u32 i = 0; i < (64 / 8); i++)
{
u32 value = ZeroExtend32(*(in_ptr++) >> 4);
value |= ZeroExtend32(*(in_ptr++) >> 4) << 4;
value |= ZeroExtend32(*(in_ptr++) >> 4) << 8;
value |= ZeroExtend32(*(in_ptr++) >> 4) << 12;
value |= ZeroExtend32(*(in_ptr++) >> 4) << 16;
value |= ZeroExtend32(*(in_ptr++) >> 4) << 20;
value |= ZeroExtend32(*(in_ptr++) >> 4) << 24;
value |= ZeroExtend32(*(in_ptr++) >> 4) << 28;
m_data_out_fifo.Push(value);
}
}
break;
ScheduleBlockCopyOut(TICKS_PER_BLOCK);
case DataOutputDepth_8Bit:
{
const u8* in_ptr = out_r.data();
for (u32 i = 0; i < (64 / 4); i++)
{
u32 value = ZeroExtend32(*in_ptr++);
value |= ZeroExtend32(*in_ptr++) << 8;
value |= ZeroExtend32(*in_ptr++) << 16;
value |= ZeroExtend32(*in_ptr++) << 24;
m_data_out_fifo.Push(value);
}
}
break;
default:
break;
}
m_debug_blocks_decoded++;
m_total_blocks_decoded++;
return true;
}
@ -382,46 +403,102 @@ bool MDEC::DecodeColoredMacroblock()
// done decoding
m_current_block = 0;
Log_DebugPrintf("Decoded colored macroblock");
Log_DebugPrintf("Decoded colored macroblock, %u words remaining", m_remaining_halfwords / 2);
std::array<u32, 256> out_rgb;
yuv_to_rgb(0, 0, m_blocks[0], m_blocks[1], m_blocks[2], out_rgb);
yuv_to_rgb(8, 0, m_blocks[0], m_blocks[1], m_blocks[3], out_rgb);
yuv_to_rgb(0, 8, m_blocks[0], m_blocks[1], m_blocks[4], out_rgb);
yuv_to_rgb(8, 8, m_blocks[0], m_blocks[1], m_blocks[5], out_rgb);
yuv_to_rgb(0, 0, m_blocks[0], m_blocks[1], m_blocks[2]);
yuv_to_rgb(8, 0, m_blocks[0], m_blocks[1], m_blocks[3]);
yuv_to_rgb(0, 8, m_blocks[0], m_blocks[1], m_blocks[4]);
yuv_to_rgb(8, 8, m_blocks[0], m_blocks[1], m_blocks[5]);
ScheduleBlockCopyOut(TICKS_PER_BLOCK);
m_total_blocks_decoded += 4;
return true;
}
void MDEC::ScheduleBlockCopyOut(TickCount ticks)
{
DebugAssert(!m_block_copy_out_pending);
Log_DebugPrintf("Scheduling block copy out in %d ticks", ticks);
m_system->Synchronize();
m_block_copy_out_pending = true;
m_block_copy_out_ticks = ticks;
m_system->SetDowncount(ticks);
}
void MDEC::CopyOutBlock()
{
DebugAssert(m_block_copy_out_pending);
m_block_copy_out_pending = false;
m_block_copy_out_ticks = 0;
Log_DebugPrintf("Copying out block");
switch (m_status.data_output_depth)
{
case DataOutputDepth_4Bit:
{
const u32* in_ptr = m_block_rgb.data();
for (u32 i = 0; i < (64 / 8); i++)
{
u32 value = *(in_ptr++) >> 4;
value |= (*(in_ptr++) >> 4) << 4;
value |= (*(in_ptr++) >> 4) << 8;
value |= (*(in_ptr++) >> 4) << 12;
value |= (*(in_ptr++) >> 4) << 16;
value |= (*(in_ptr++) >> 4) << 20;
value |= (*(in_ptr++) >> 4) << 24;
value |= (*(in_ptr++) >> 4) << 28;
m_data_out_fifo.Push(value);
}
}
break;
case DataOutputDepth_8Bit:
{
const u32* in_ptr = m_block_rgb.data();
for (u32 i = 0; i < (64 / 4); i++)
{
u32 value = *in_ptr++;
value |= *in_ptr++ << 8;
value |= *in_ptr++ << 16;
value |= *in_ptr++ << 24;
m_data_out_fifo.Push(value);
}
}
break;
case DataOutputDepth_24Bit:
{
// pack tightly
u32 index = 0;
u32 state = 0;
u32 rgb = 0;
while (index < out_rgb.size())
while (index < m_block_rgb.size())
{
switch (state)
{
case 0:
rgb = out_rgb[index++]; // RGB-
rgb = m_block_rgb[index++]; // RGB-
state = 1;
break;
case 1:
rgb |= (out_rgb[index] & 0xFF) << 24; // RGBR
rgb |= (m_block_rgb[index] & 0xFF) << 24; // RGBR
m_data_out_fifo.Push(rgb);
rgb = out_rgb[index] >> 8; // GB--
rgb = m_block_rgb[index] >> 8; // GB--
index++;
state = 2;
break;
case 2:
rgb |= out_rgb[index] << 16; // GBRG
rgb |= m_block_rgb[index] << 16; // GBRG
m_data_out_fifo.Push(rgb);
rgb = out_rgb[index] >> 16; // B---
rgb = m_block_rgb[index] >> 16; // B---
index++;
state = 3;
break;
case 3:
rgb |= out_rgb[index] << 8; // BRGB
rgb |= m_block_rgb[index] << 8; // BRGB
m_data_out_fifo.Push(rgb);
index++;
state = 0;
@ -434,15 +511,15 @@ bool MDEC::DecodeColoredMacroblock()
case DataOutputDepth_15Bit:
{
const u16 a = ZeroExtend16(m_status.data_output_bit15.GetValue());
for (u32 i = 0; i < static_cast<u32>(out_rgb.size());)
for (u32 i = 0; i < static_cast<u32>(m_block_rgb.size());)
{
u32 color = out_rgb[i++];
u32 color = m_block_rgb[i++];
u16 r = Truncate16((color >> 3) & 0x1Fu);
u16 g = Truncate16((color >> 11) & 0x1Fu);
u16 b = Truncate16((color >> 19) & 0x1Fu);
const u16 color15a = r | (g << 5) | (b << 10) | (a << 15);
color = out_rgb[i++];
color = m_block_rgb[i++];
r = Truncate16((color >> 3) & 0x1Fu);
g = Truncate16((color >> 11) & 0x1Fu);
b = Truncate16((color >> 19) & 0x1Fu);
@ -457,8 +534,15 @@ bool MDEC::DecodeColoredMacroblock()
break;
}
m_debug_blocks_decoded++;
return true;
// if we've copied out all blocks, command is complete
if (m_remaining_halfwords == 0)
{
DebugAssert(m_command == Command::DecodeMacroblock);
m_command = Command::None;
m_current_block = 0;
m_current_coefficient = 64;
m_current_q_scale = 0;
}
}
static constexpr std::array<u8, 64> zigzag = {{0, 1, 5, 6, 14, 15, 27, 28, 2, 4, 7, 13, 16, 26, 29, 42,
@ -480,10 +564,12 @@ bool MDEC::rl_decode_block(s16* blk, const u8* qt)
u16 n;
for (;;)
{
if (m_data_in_fifo.IsEmpty())
if (m_data_in_fifo.IsEmpty() || m_remaining_halfwords == 0)
return false;
n = m_data_in_fifo.Pop();
m_remaining_halfwords--;
if (n == 0xFE00)
continue;
else
@ -505,9 +591,11 @@ bool MDEC::rl_decode_block(s16* blk, const u8* qt)
blk[m_current_coefficient] = static_cast<s16>(val);
}
while (!m_data_in_fifo.IsEmpty())
while (!m_data_in_fifo.IsEmpty() && m_remaining_halfwords > 0)
{
u16 n = m_data_in_fifo.Pop();
m_remaining_halfwords--;
m_current_coefficient += ((n >> 10) & 0x3F) + 1;
if (m_current_coefficient >= 64)
{
@ -562,7 +650,7 @@ void MDEC::IDCT(s16* blk)
}
void MDEC::yuv_to_rgb(u32 xx, u32 yy, const std::array<s16, 64>& Crblk, const std::array<s16, 64>& Cbblk,
const std::array<s16, 64>& Yblk, std::array<u32, 256>& rgb_out)
const std::array<s16, 64>& Yblk)
{
for (u32 y = 0; y < 8; y++)
{
@ -585,14 +673,14 @@ void MDEC::yuv_to_rgb(u32 xx, u32 yy, const std::array<s16, 64>& Crblk, const st
G += 128;
B += 128;
rgb_out[(x + xx) + ((y + yy) * 16)] = ZeroExtend32(static_cast<u16>(R)) |
(ZeroExtend32(static_cast<u16>(G)) << 8) |
(ZeroExtend32(static_cast<u16>(B)) << 16);
m_block_rgb[(x + xx) + ((y + yy) * 16)] = ZeroExtend32(static_cast<u16>(R)) |
(ZeroExtend32(static_cast<u16>(G)) << 8) |
(ZeroExtend32(static_cast<u16>(B)) << 16);
}
}
}
void MDEC::y_to_mono(const std::array<s16, 64>& Yblk, std::array<u8, 64>& r_out)
void MDEC::y_to_mono(const std::array<s16, 64>& Yblk)
{
for (u32 i = 0; i < 64; i++)
{
@ -600,70 +688,62 @@ void MDEC::y_to_mono(const std::array<s16, 64>& Yblk, std::array<u8, 64>& r_out)
Y = SignExtendN<10, s16>(Y);
Y = std::clamp<s16>(Y, -128, 127);
Y += 128;
r_out[i] = static_cast<u8>(Y);
m_block_rgb[i] = static_cast<u32>(Y) & 0xFF;
}
}
bool MDEC::HandleSetQuantTableCommand()
void MDEC::HandleSetQuantTableCommand()
{
if (m_remaining_words > 0)
return false;
DebugAssert(m_remaining_halfwords >= 32);
// TODO: Remove extra copies..
std::array<u16, 32> packed_data;
m_data_in_fifo.PopRange(packed_data.data(), static_cast<u32>(packed_data.size()));
m_remaining_halfwords -= 32;
std::memcpy(m_iq_y.data(), packed_data.data(), m_iq_y.size());
if (!m_data_in_fifo.IsEmpty())
if (m_remaining_halfwords > 0)
{
DebugAssert(m_remaining_halfwords >= 32);
m_data_in_fifo.PopRange(packed_data.data(), static_cast<u32>(packed_data.size()));
std::memcpy(m_iq_uv.data(), packed_data.data(), m_iq_uv.size());
}
return true;
}
bool MDEC::HandleSetScaleCommand()
void MDEC::HandleSetScaleCommand()
{
if (m_remaining_words > 0)
return false;
DebugAssert(m_remaining_halfwords == 64);
// TODO: Remove extra copies..
std::array<u16, 64> packed_data;
m_data_in_fifo.PopRange(packed_data.data(), static_cast<u32>(packed_data.size()));
m_remaining_halfwords -= 32;
std::memcpy(m_scale_table.data(), packed_data.data(), m_scale_table.size() * sizeof(s16));
return true;
}
void MDEC::DrawDebugMenu()
{
ImGui::MenuItem("MDEC", nullptr, &m_debug_show_state);
ImGui::MenuItem("MDEC", nullptr, &m_show_state);
}
void MDEC::DrawDebugWindow()
{
if (!m_debug_show_state)
if (!m_show_state)
return;
ImGui::SetNextWindowSize(ImVec2(300, 350), ImGuiCond_FirstUseEver);
if (!ImGui::Begin("MDEC State", &m_debug_show_state))
if (!ImGui::Begin("MDEC State", &m_show_state))
{
ImGui::End();
return;
}
if (m_debug_blocks_decoded > 0)
{
m_debug_last_blocks_decoded = m_debug_blocks_decoded;
m_debug_blocks_decoded = 0;
}
static constexpr std::array<const char*, 4> command_names = {{"None", "Decode Macroblock", "SetIqTab", "SetScale"}};
static constexpr std::array<const char*, 4> output_depths = {{"4-bit", "8-bit", "24-bit", "15-bit"}};
static constexpr std::array<const char*, 6> block_names = {{"Crblk", "Cbblk", "Y1", "Y2", "Y3", "Y4"}};
ImGui::Text("Blocks Decoded: %u (%ux8, 320x%u)", m_debug_last_blocks_decoded, m_debug_last_blocks_decoded * 8,
m_debug_last_blocks_decoded * 8 / (320 / 8) * 8);
ImGui::Text("Blocks Decoded: %u", m_total_blocks_decoded);
ImGui::Text("Data-In FIFO Size: %u (%u bytes)", m_data_in_fifo.GetSize(), m_data_in_fifo.GetSize() * 4);
ImGui::Text("Data-Out FIFO Size: %u (%u bytes)", m_data_out_fifo.GetSize(), m_data_out_fifo.GetSize() * 4);
ImGui::Text("DMA Enable: %s%s", m_enable_dma_in ? "In " : "", m_enable_dma_out ? "Out" : "");

44
src/core/mdec.h
View File

@ -26,13 +26,16 @@ public:
void DMARead(u32* words, u32 word_count);
void DMAWrite(const u32* words, u32 word_count);
void Execute(TickCount ticks);
void DrawDebugMenu();
void DrawDebugWindow();
private:
static constexpr u32 DATA_IN_FIFO_SIZE = 512 * 1024;
static constexpr u32 DATA_OUT_FIFO_SIZE = 512 * 1024;
static constexpr u32 DATA_IN_FIFO_SIZE = 256 * 4;
static constexpr u32 DATA_OUT_FIFO_SIZE = 192 * 4;
static constexpr u32 NUM_BLOCKS = 6;
static constexpr TickCount TICKS_PER_BLOCK = 256;
enum DataOutputDepth : u8
{
@ -85,27 +88,31 @@ private:
BitField<u32, u16, 0, 16> parameter_word_count;
};
bool HasPendingCommand() const { return m_command != Command::None; }
void SoftReset();
void UpdateStatusRegister();
void UpdateDMARequest();
void UpdateStatus();
u32 ReadDataRegister();
void WriteCommandRegister(u32 value);
void Execute();
void ExecutePendingCommand();
void EndCommand();
bool HandleDecodeMacroblockCommand();
bool HandleSetQuantTableCommand();
bool HandleSetScaleCommand();
void HandleSetQuantTableCommand();
void HandleSetScaleCommand();
bool DecodeColoredMacroblock();
bool DecodeMonoMacroblock();
bool DecodeColoredMacroblock();
void ScheduleBlockCopyOut(TickCount ticks);
void CopyOutBlock();
// from nocash spec
bool rl_decode_block(s16* blk, const u8* qt);
void IDCT(s16* blk);
void yuv_to_rgb(u32 xx, u32 yy, const std::array<s16, 64>& Crblk, const std::array<s16, 64>& Cbblk,
const std::array<s16, 64>& Yblk, std::array<u32, 256>& rgb_out);
void y_to_mono(const std::array<s16, 64>& Yblk, std::array<u8, 64>& r_out);
const std::array<s16, 64>& Yblk);
void y_to_mono(const std::array<s16, 64>& Yblk);
System* m_system = nullptr;
DMA* m_dma = nullptr;
@ -118,7 +125,7 @@ private:
InlineFIFOQueue<u16, DATA_IN_FIFO_SIZE / sizeof(u16)> m_data_in_fifo;
InlineFIFOQueue<u32, DATA_OUT_FIFO_SIZE / sizeof(u32)> m_data_out_fifo;
Command m_command = Command::None;
u32 m_remaining_words = 0;
u32 m_remaining_halfwords = 0;
std::array<u8, 64> m_iq_uv{};
std::array<u8, 64> m_iq_y{};
@ -127,11 +134,14 @@ private:
// blocks, for colour: 0 - Crblk, 1 - Cbblk, 2-5 - Y 1-4
std::array<std::array<s16, 64>, NUM_BLOCKS> m_blocks;
u32 m_current_block = 0; // block (0-5)
u32 m_current_coefficient = 64; // k (in block)
u32 m_current_block = 0; // block (0-5)
u32 m_current_coefficient = 64; // k (in block)
u16 m_current_q_scale = 0;
bool m_debug_show_state = false;
u32 m_debug_blocks_decoded = 0;
u32 m_debug_last_blocks_decoded = 0;
};
std::array<u32, 256> m_block_rgb{};
TickCount m_block_copy_out_ticks = TICKS_PER_BLOCK;
bool m_block_copy_out_pending = false;
bool m_show_state = false;
u32 m_total_blocks_decoded = 0;
};

1
src/core/system.cpp
View File

@ -289,6 +289,7 @@ void System::Synchronize()
m_cdrom->Execute(pending_ticks);
m_pad->Execute(pending_ticks);
m_spu->Execute(pending_ticks);
m_mdec->Execute(pending_ticks);
}
void System::SetDowncount(TickCount downcount)