#include "stdafx.h"
#include "Emu/Cell/PPUModule.h"
#include "Emu/Cell/lv2/sys_cond.h"
#include "Emu/Cell/lv2/sys_memory.h"
#include "Emu/Cell/lv2/sys_mutex.h"
#include "Emu/Cell/lv2/sys_ppu_thread.h"
#include "Emu/Cell/lv2/sys_sync.h"
#include "sysPrxForUser.h"
#include "util/asm.hpp"

#include "cellDmuxPamf.h"
#include <ranges>
#include <climits>

vm::gvar<CellDmuxCoreOps> g_cell_dmux_core_ops_pamf;
vm::gvar<CellDmuxCoreOps> g_cell_dmux_core_ops_raw_es;

LOG_CHANNEL(cellDmuxPamf)

template <>
void fmt_class_string<CellDmuxPamfError>::format(std::string& out, u64 arg)
{
	format_enum(out, arg, [](CellDmuxPamfError value)
	{
		switch (value)
		{
			STR_CASE(CELL_DMUX_PAMF_ERROR_BUSY);
			STR_CASE(CELL_DMUX_PAMF_ERROR_ARG);
			STR_CASE(CELL_DMUX_PAMF_ERROR_UNKNOWN_STREAM);
			STR_CASE(CELL_DMUX_PAMF_ERROR_NO_MEMORY);
			STR_CASE(CELL_DMUX_PAMF_ERROR_FATAL);
		}

		return unknown;
	});
}

inline std::pair<DmuxPamfStreamTypeIndex, u32> dmuxPamfStreamIdToTypeChannel(u16 stream_id, u16 private_stream_id)
{
	if ((stream_id & 0xf0) == 0xe0)
	{
		return { DMUX_PAMF_STREAM_TYPE_INDEX_VIDEO, stream_id & 0x0f };
	}

	if ((stream_id & 0xff) != 0xbd)
	{
		return { DMUX_PAMF_STREAM_TYPE_INDEX_INVALID, 0 };
	}

	switch (private_stream_id & 0xf0)
	{
	case 0x40: return { DMUX_PAMF_STREAM_TYPE_INDEX_LPCM, private_stream_id & 0x0f };
	case 0x30: return { DMUX_PAMF_STREAM_TYPE_INDEX_AC3, private_stream_id & 0x0f };
	case 0x00: return { DMUX_PAMF_STREAM_TYPE_INDEX_ATRACX, private_stream_id & 0x0f };
	case 0x20: return { DMUX_PAMF_STREAM_TYPE_INDEX_USER_DATA, private_stream_id & 0x0f };
	default:   return { DMUX_PAMF_STREAM_TYPE_INDEX_INVALID, 0 };
	}
}


// SPU thread

void dmux_pamf_base::output_queue::pop_back(u32 au_size)
{
	ensure(back - au_size >= buffer.data(), "Invalid au_size");
	back -= au_size;
}

void dmux_pamf_base::output_queue::pop_back(u8* au_addr)
{
	ensure(au_addr >= buffer.data() && au_addr < std::to_address(buffer.end()), "Invalid au_addr");

	// If au_begin is in front of the back pointer, unwrap the back pointer (there are no more access units behind the back pointer)
	if (au_addr > back)
	{
		wrap_pos = buffer.data();
	}

	back = au_addr;
}

void dmux_pamf_base::output_queue::pop_front(u32 au_size)
{
	ensure(front + au_size <= std::to_address(buffer.end()), "Invalid au_size");
	front += au_size;

	// When front reaches wrap_pos, unwrap the queue
	if (wrap_pos != buffer.data() && wrap_pos <= front)
	{
		ensure(wrap_pos == front, "Invalid au_size");
		front = buffer.data();
		wrap_pos = buffer.data();
	}
}

void dmux_pamf_base::output_queue::push_unchecked(const access_unit_chunk& au_chunk)
{
	std::ranges::copy(au_chunk.cached_data, back);
	std::ranges::copy(au_chunk.data, back + au_chunk.cached_data.size());
	back += au_chunk.data.size() + au_chunk.cached_data.size();
}

bool dmux_pamf_base::output_queue::push(const access_unit_chunk& au_chunk, const std::function<void()>& on_fatal_error)
{
	// If there are any unconsumed access units behind the back pointer, the distance between the front and back pointers is the remaining capacity,
	// otherwise the distance between the end of the buffer and the back pointer is the remaining capacity
	if (wrap_pos == buffer.data())
	{
		// Since it was already checked if there is enough space for au_max_size, this can only occur if the current access unit is larger than au_max_size
		if (au_chunk.data.size() + au_chunk.cached_data.size() > static_cast<u32>(std::to_address(buffer.end()) - back))
		{
			cellDmuxPamf.error("Access unit larger than specified maximum access unit size");
			on_fatal_error();
			return false;
		}
	}
	else if (au_chunk.data.size() + au_chunk.cached_data.size() + 0x10 > static_cast<u32>(front - back)) // + sizeof(v128) because of SPU shenanigans probably
	{
		return false;
	}

	push_unchecked(au_chunk);
	return true;
}

bool dmux_pamf_base::output_queue::prepare_next_au(u32 au_max_size)
{
	// LLE always checks the distance between the end of the buffer and the back pointer, even if the back pointer is wrapped around and there are unconsumed access units behind it
	if (std::to_address(buffer.end()) - back < au_max_size)
	{
		// Can't wrap the back pointer around again as long as there are unconsumed access units behind it
		if (wrap_pos != buffer.data())
		{
			return false;
		}

		wrap_pos = back;
		back = buffer.data();
	}

	return true;
}

void dmux_pamf_base::elementary_stream::flush_es()
{
	if (current_au.accumulated_size != 0)
	{
		ensure(au_queue.get_free_size() >= cache.size());
		au_queue.push_unchecked({ {}, cache });

		current_au.accumulated_size += static_cast<u32>(cache.size());

		ctx.on_au_found(get_stream_id().first, get_stream_id().second, user_data, { au_queue.peek_back(current_au.accumulated_size), current_au.accumulated_size }, current_au.pts, current_au.dts,
			current_au.rap, au_specific_info_size, current_au.au_specific_info_buf);
	}

	reset();

	while (!ctx.on_flush_done(get_stream_id().first, get_stream_id().second, user_data)) {} // The flush_done event is repeatedly fired until it succeeds
}

void dmux_pamf_base::elementary_stream::reset_es(u8* au_addr)
{
	if (!au_addr)
	{
		reset();
		au_queue.clear();
	}
	else
	{
		au_queue.pop_back(au_addr);
	}
}

void dmux_pamf_base::elementary_stream::discard_access_unit()
{
	au_queue.pop_back(current_au.accumulated_size - static_cast<u32>(au_chunk.data.size() + au_chunk.cached_data.size()));
	reset();
	cache.clear();
}

template <u32 extra_header_size_unk_mask>
u32 dmux_pamf_base::elementary_stream::parse_audio_stream_header(std::span<const u8> pes_packet_data)
{
	u32 extra_header_size_unk = 0; // No clue what this is, I have not found a single instance in any PAMF stream where it is something other than zero

	if (!au_size_unk) // For some reason, LLE uses the member that stores the size of user data access units here as bool
	{
		// Not checked on LLE
		if (pes_packet_data.size() < sizeof(u32))
		{
			return umax;
		}

		extra_header_size_unk = read_from_ptr<be_t<u32>>(pes_packet_data) & extra_header_size_unk_mask;
		au_size_unk = true;
	}

	return extra_header_size_unk + sizeof(u32);
}

bool dmux_pamf_base::elementary_stream::process_pes_packet_data()
{
	ensure(pes_packet_data, "set_pes_packet_data() should be used before process_stream()");

	for (;;)
	{
		switch (state)
		{
		case state::initial:
			if (stream_chunk.empty())
			{
				pes_packet_data.reset();
				return true;
			}

			// Parse the current stream section and increment the reading position by the amount that was consumed
			stream_chunk = stream_chunk.subspan(parse_stream(stream_chunk));

			current_au.accumulated_size += static_cast<u32>(au_chunk.data.size() + au_chunk.cached_data.size());

			// If the beginning of a new access unit was found, set the current timestamps and rap indicator
			if (!current_au.timestamps_rap_set && (current_au.state == access_unit::state::commenced || current_au.state == access_unit::state::m2v_sequence
				|| (current_au.state == access_unit::state::complete && au_chunk.cached_data.empty())))
			{
				set_au_timestamps_rap();
			}

			state = state::pushing_au_queue;
			[[fallthrough]];

		case state::pushing_au_queue:
			if (!au_chunk.data.empty() || !au_chunk.cached_data.empty())
			{
				if (!au_queue.push(au_chunk, std::bind_front(&dmux_pamf_base::on_fatal_error, &ctx)))
				{
					ctx.on_au_queue_full();
					return false;
				}

				au_chunk.data = {};
				au_chunk.cached_data.clear();
			}

			// This happens if the distance between two delimiters is greater than the size indicated in the info header of the stream.
			if (current_au.state == access_unit::state::size_mismatch)
			{
				// LLE cuts off one byte from the beginning of the current PES packet data and then starts over.
				pes_packet_data = pes_packet_data->subspan<1>();
				stream_chunk = *pes_packet_data;

				// It also removes the entire current access unit from the queue, even if it began in an earlier PES packet
				au_queue.pop_back(current_au.accumulated_size);
				current_au.accumulated_size = 0;

				state = state::initial;
				continue;
			}

			state = state::notifying_au_found;
			[[fallthrough]];

		case state::notifying_au_found:
			if (current_au.state == access_unit::state::complete && !ctx.on_au_found(get_stream_id().first, get_stream_id().second, user_data,
				{ au_queue.peek_back(current_au.accumulated_size), current_au.accumulated_size }, current_au.pts, current_au.dts, current_au.rap, au_specific_info_size, current_au.au_specific_info_buf))
			{
				return false;
			}

			state = state::preparing_for_next_au;
			[[fallthrough]];

		case state::preparing_for_next_au:
			if (current_au.state == access_unit::state::complete)
			{
				if (!au_queue.prepare_next_au(au_max_size))
				{
					ctx.on_au_queue_full();
					return false;
				}

				current_au = {};
			}

			state = state::initial;
		}
	}
}

template <bool avc>
u32 dmux_pamf_base::video_stream<avc>::parse_stream(std::span<const u8> stream)
{
	if (current_au.state != access_unit::state::none && (avc || current_au.state != access_unit::state::m2v_sequence))
	{
		current_au.state = access_unit::state::incomplete;
	}

	// Concatenate the cache of the previous stream section and the beginning of the current section
	std::array<u8, 8> buf{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; // Prevent false positives (M2V pic start code ends with 0x00)
	ensure(cache.size() <= 3, "The size of the cache should never exceed three bytes");
	std::ranges::copy(cache, buf.begin());
	std::copy_n(stream.begin(), std::min(sizeof(u32) - 1, stream.size()), buf.begin() + cache.size()); // Not entirely accurate: LLE always reads three bytes from the stream, even if it is smaller than that

	auto au_chunk_begin = stream.begin();
	s32 cache_idx = 0;
	auto stream_it = stream.begin();
	[&]
	{
		// Search for delimiter in cache
		for (; cache_idx < static_cast<s32>(cache.size()); cache_idx++)
		{
			if (const be_t<u32> code = read_from_ptr<be_t<u32>>(buf.data(), cache_idx);
				(avc && code == AVC_AU_DELIMITER) || (!avc && (code == M2V_PIC_START || code == M2V_SEQUENCE_HEADER || code == M2V_SEQUENCE_END)))
			{
				if (current_au.state != access_unit::state::none && (avc || current_au.state != access_unit::state::m2v_sequence))
				{
					// The sequence end code is included in the access unit
					// LLE increments the stream pointer instead of the cache index, which will cause the access unit to be corrupted at the end
					if (!avc && code == M2V_SEQUENCE_END)
					{
						cellDmuxPamf.warning("M2V sequence end code in cache");
						stream_it += std::min(sizeof(u32), stream.size()); // Not accurate, LLE always increments by four, regardless of the stream size
					}

					current_au.state = access_unit::state::complete;
					return;
				}

				// If current_au.state is none and there was a delimiter found here, then LLE outputs the entire cache, even if the access unit starts at cache_idx > 0

				current_au.state = avc || code == M2V_PIC_START ? access_unit::state::commenced : access_unit::state::m2v_sequence;
			}
		}

		// Search for delimiter in stream
		for (; stream_it <= stream.end() - sizeof(u32); stream_it++)
		{
			if (const be_t<u32> code = read_from_ptr<be_t<u32>>(stream_it);
				(avc && code == AVC_AU_DELIMITER) || (!avc && (code == M2V_PIC_START || code == M2V_SEQUENCE_HEADER || code == M2V_SEQUENCE_END)))
			{
				if (current_au.state != access_unit::state::none && (avc || current_au.state != access_unit::state::m2v_sequence))
				{
					stream_it += !avc && code == M2V_SEQUENCE_END ? sizeof(u32) : 0; // The sequence end code is included in the access unit
					current_au.state = access_unit::state::complete;
					return;
				}

				au_chunk_begin = avc || current_au.state == access_unit::state::none ? stream_it : au_chunk_begin;
				current_au.state = avc || code == M2V_PIC_START ? access_unit::state::commenced : access_unit::state::m2v_sequence;
			}
		}
	}();

	if (current_au.state != access_unit::state::none)
	{
		au_chunk.data = { au_chunk_begin, stream_it };
		std::copy_n(cache.begin(), cache_idx, std::back_inserter(au_chunk.cached_data));
	}

	cache.erase(cache.begin(), cache.begin() + cache_idx);

	// Cache the end of the stream if an access unit wasn't completed. There could be the beginning of a delimiter in the last three bytes
	if (current_au.state != access_unit::state::complete)
	{
		std::copy(stream_it, stream.end(), std::back_inserter(cache));
	}

	return static_cast<u32>((current_au.state != access_unit::state::complete || stream_it > stream.end() ? stream.end() : stream_it) - stream.begin());
}

u32 dmux_pamf_base::lpcm_stream::parse_stream_header(std::span<const u8> pes_packet_data, [[maybe_unused]] s8 pts_dts_flag)
{
	// Not checked on LLE
	if (pes_packet_data.size() < sizeof(u8) + 0x10)
	{
		return umax;
	}

	std::memcpy(au_specific_info_buf.data(), &pes_packet_data[1], au_specific_info_buf.size());
	return parse_audio_stream_header<0x7ff>(pes_packet_data);
}

u32 dmux_pamf_base::lpcm_stream::parse_stream(std::span<const u8> stream)
{
	if (current_au.state == access_unit::state::none)
	{
		current_au.au_specific_info_buf = au_specific_info_buf;
	}

	if (au_max_size - current_au.accumulated_size > stream.size())
	{
		au_chunk.data = stream;
		current_au.state = current_au.state == access_unit::state::none ? access_unit::state::commenced : access_unit::state::incomplete;
	}
	else
	{
		au_chunk.data = stream.first(au_max_size - current_au.accumulated_size);
		current_au.state = access_unit::state::complete;
	}

	return static_cast<u32>(au_chunk.data.size());
}

template <bool ac3>
u32 dmux_pamf_base::audio_stream<ac3>::parse_stream(std::span<const u8> stream)
{
	const auto parse_au_size = [](be_t<u16> data) -> u16
	{
		if constexpr (ac3)
		{
			if (const u8 fscod = data >> 14, frmsizecod = data >> 8 & 0x3f; fscod < 3 && frmsizecod < 38)
			{
				return AC3_FRMSIZE_TABLE[fscod][frmsizecod] * sizeof(s16);
			}
		}
		else if ((data & 0x3ff) < 0x200)
		{
			return ((data & 0x3ff) + 1) * 8 + ATRACX_ATS_HEADER_SIZE;
		}

		return 0;
	};

	if (current_au.state != access_unit::state::none)
	{
		current_au.state = access_unit::state::incomplete;
	}

	// Concatenate the cache of the previous stream section and the beginning of the current section
	std::array<u8, 8> buf{};
	ensure(cache.size() <= 3, "The size of the cache should never exceed three bytes");
	std::ranges::copy(cache, buf.begin());
	std::copy_n(stream.begin(), std::min(sizeof(u16) - 1, stream.size()), buf.begin() + cache.size());

	auto au_chunk_begin = stream.begin();
	s32 cache_idx = 0;
	auto stream_it = stream.begin();
	[&]
	{
		// Search for delimiter in cache
		for (; cache_idx <= static_cast<s32>(cache.size() + std::min(sizeof(u16) - 1, stream.size()) - sizeof(u16)); cache_idx++)
		{
			if (const be_t<u16> tmp = read_from_ptr<be_t<u16>>(buf.data(), cache_idx); current_au.size_info_offset != 0)
			{
				if (--current_au.size_info_offset == 0)
				{
					current_au.parsed_size = parse_au_size(tmp);
				}
			}
			else if (tmp == SYNC_WORD)
			{
				if (current_au.state == access_unit::state::none)
				{
					// If current_au.state is none and there was a delimiter found here, then LLE outputs the entire cache, even if the access unit starts at cache_idx > 0

					current_au.size_info_offset = ac3 ? sizeof(u16) * 2 : sizeof(u16);
					current_au.state = access_unit::state::commenced;
				}
				else if (const u32 au_size = current_au.accumulated_size + cache_idx; au_size >= current_au.parsed_size)
				{
					current_au.state = au_size == current_au.parsed_size ? access_unit::state::complete : access_unit::state::size_mismatch;
					return;
				}
			}
		}

		// As long as the current access unit hasn't reached the size indicated in its header, we don't need to parse the stream
		if (current_au.state != access_unit::state::none && current_au.size_info_offset == 0 && current_au.accumulated_size + cache.size() < current_au.parsed_size)
		{
			stream_it += std::min(current_au.parsed_size - current_au.accumulated_size - cache.size(), stream.size() - sizeof(u32));
		}

		// Search for delimiter in stream
		for (; stream_it <= stream.end() - sizeof(u32); stream_it++) // LLE uses sizeof(u32), even though the delimiter is only two bytes large
		{
			if (const be_t<u16> tmp = read_from_ptr<be_t<u16>>(stream_it); current_au.size_info_offset != 0)
			{
				if (--current_au.size_info_offset == 0)
				{
					current_au.parsed_size = parse_au_size(tmp);
				}
			}
			else if (tmp == SYNC_WORD)
			{
				if (current_au.state == access_unit::state::none)
				{
					au_chunk_begin = stream_it;
					current_au.size_info_offset = ac3 ? sizeof(u16) * 2 : sizeof(u16);
					current_au.state = access_unit::state::commenced;
				}
				else if (const u32 au_size = static_cast<u32>(current_au.accumulated_size + stream_it - au_chunk_begin + cache.size()); au_size >= current_au.parsed_size)
				{
					current_au.state = au_size == current_au.parsed_size ? access_unit::state::complete : access_unit::state::size_mismatch;
					return;
				}
			}
		}
	}();

	if (current_au.state != access_unit::state::none)
	{
		au_chunk.data = { au_chunk_begin, stream_it };
		std::copy_n(cache.begin(), cache_idx, std::back_inserter(au_chunk.cached_data));
	}

	cache.erase(cache.begin(), cache.begin() + cache_idx);

	// Cache the end of the stream if an access unit wasn't completed. There could be the beginning of a delimiter in the last three bytes
	if (current_au.state != access_unit::state::complete && current_au.state != access_unit::state::size_mismatch)
	{
		std::copy(stream_it, stream.end(), std::back_inserter(cache));
	}

	return static_cast<u32>((current_au.state != access_unit::state::complete ? stream.end() : stream_it) - stream.begin());
}

u32 dmux_pamf_base::user_data_stream::parse_stream_header(std::span<const u8> pes_packet_data, s8 pts_dts_flag)
{
	if (pts_dts_flag < 0) // PTS field exists
	{
		// Not checked on LLE
		if (pes_packet_data.size() < 2 + sizeof(u32))
		{
			return umax;
		}

		au_size_unk = read_from_ptr<be_t<u32>>(pes_packet_data.begin(), 2) - sizeof(u32);
		return 10;
	}

	return 2;
}

u32 dmux_pamf_base::user_data_stream::parse_stream(std::span<const u8> stream)
{
	if (au_size_unk > stream.size())
	{
		au_chunk.data = stream;
		au_size_unk -= static_cast<u32>(stream.size());
		current_au.state = access_unit::state::commenced; // User data streams always use commenced
	}
	else
	{
		au_chunk.data = stream.first(au_size_unk);
		au_size_unk = 0;
		current_au.state = access_unit::state::complete;
	}

	return static_cast<u32>(stream.size()); // Always consume the entire stream
}

bool dmux_pamf_base::enable_es(u32 stream_id, u32 private_stream_id, bool is_avc, std::span<u8> au_queue_buffer, u32 au_max_size, bool raw_es, u32 user_data)
{
	const auto [type_idx, channel] = dmuxPamfStreamIdToTypeChannel(stream_id, private_stream_id);

	if (type_idx == DMUX_PAMF_STREAM_TYPE_INDEX_INVALID || elementary_stream::is_enabled(elementary_streams[type_idx][channel]))
	{
		return false;
	}

	this->raw_es = raw_es;
	pack_es_type_idx = type_idx;

	switch (type_idx)
	{
	case DMUX_PAMF_STREAM_TYPE_INDEX_VIDEO:
		elementary_streams[0][channel] = is_avc ? static_cast<std::unique_ptr<elementary_stream>>(std::make_unique<video_stream<true>>(channel, au_max_size, *this, user_data, au_queue_buffer))
			: std::make_unique<video_stream<false>>(channel, au_max_size, *this, user_data, au_queue_buffer);
		return true;

	case DMUX_PAMF_STREAM_TYPE_INDEX_LPCM:      elementary_streams[1][channel] = std::make_unique<lpcm_stream>(channel, au_max_size, *this, user_data, au_queue_buffer); return true;
	case DMUX_PAMF_STREAM_TYPE_INDEX_AC3:       elementary_streams[2][channel] = std::make_unique<audio_stream<true>>(channel, au_max_size, *this, user_data, au_queue_buffer); return true;
	case DMUX_PAMF_STREAM_TYPE_INDEX_ATRACX:    elementary_streams[3][channel] = std::make_unique<audio_stream<false>>(channel, au_max_size, *this, user_data, au_queue_buffer); return true;
	case DMUX_PAMF_STREAM_TYPE_INDEX_USER_DATA: elementary_streams[4][channel] = std::make_unique<user_data_stream>(channel, au_max_size, *this, user_data, au_queue_buffer); return true;
	default: fmt::throw_exception("Unreachable");
	}
}

bool dmux_pamf_base::disable_es(u32 stream_id, u32 private_stream_id)
{
	const auto [type_idx, channel] = dmuxPamfStreamIdToTypeChannel(stream_id, private_stream_id);

	if (type_idx == DMUX_PAMF_STREAM_TYPE_INDEX_INVALID || !elementary_stream::is_enabled(elementary_streams[type_idx][channel]))
	{
		return false;
	}

	elementary_streams[type_idx][channel] = nullptr;
	return true;
}

bool dmux_pamf_base::release_au(u32 stream_id, u32 private_stream_id, u32 au_size) const
{
	const auto [type_idx, channel] = dmuxPamfStreamIdToTypeChannel(stream_id, private_stream_id);

	if (type_idx == DMUX_PAMF_STREAM_TYPE_INDEX_INVALID || !elementary_stream::is_enabled(elementary_streams[type_idx][channel]))
	{
		return false;
	}

	elementary_streams[type_idx][channel]->release_au(au_size);
	return true;
}

bool dmux_pamf_base::flush_es(u32 stream_id, u32 private_stream_id)
{
	const auto [type_idx, channel] = dmuxPamfStreamIdToTypeChannel(stream_id, private_stream_id);

	if (type_idx == DMUX_PAMF_STREAM_TYPE_INDEX_INVALID || !elementary_stream::is_enabled(elementary_streams[type_idx][channel]))
	{
		return false;
	}

	state = state::initial;
	elementary_streams[type_idx][channel]->flush_es();
	return true;
}

void dmux_pamf_base::set_stream(std::span<const u8> stream, bool continuity)
{
	if (!continuity)
	{
		std::ranges::for_each(elementary_streams | std::views::join | std::views::filter(elementary_stream::is_enabled), &elementary_stream::discard_access_unit);
	}

	state = state::initial;

	// Not checked on LLE, it would parse old memory contents or uninitialized memory if the size of the input stream set by the user is not a multiple of 0x800.
	// Valid PAMF streams are always a multiple of 0x800 bytes large.
	if ((stream.size() & 0x7ff) != 0)
	{
		cellDmuxPamf.warning("Invalid stream size");
	}

	this->stream = stream;
	demux_done_notified = false;
}

void dmux_pamf_base::reset_stream()
{
	std::ranges::for_each(elementary_streams | std::views::join | std::views::filter(elementary_stream::is_enabled), &elementary_stream::discard_access_unit);
	state = state::initial;
	stream.reset();
}

bool dmux_pamf_base::reset_es(u32 stream_id, u32 private_stream_id, u8* au_addr)
{
	const auto [type_idx, channel] = dmuxPamfStreamIdToTypeChannel(stream_id, private_stream_id);

	if (type_idx == DMUX_PAMF_STREAM_TYPE_INDEX_INVALID || !elementary_stream::is_enabled(elementary_streams[type_idx][channel]))
	{
		return false;
	}

	if (!au_addr)
	{
		state = state::initial;
	}

	elementary_streams[type_idx][channel]->reset_es(au_addr);
	return true;
}

bool dmux_pamf_base::process_next_pack()
{
	if (!stream)
	{
		demux_done_notified = demux_done_notified || on_demux_done();
		return true;
	}

	switch (state)
	{
	case state::initial:
	{
		// Search for the next pack start code or prog end code
		std::span<const u8> pack;

		for (;;)
		{
			if (stream->size() < PACK_STUFFING_LENGTH_OFFSET + sizeof(u8))
			{
				stream.reset();
				demux_done_notified = on_demux_done();
				return true;
			}

			pack = stream->first(std::min<usz>(stream->size(), PACK_SIZE));
			stream = stream->subspan(std::min<usz>(stream->size(), PACK_SIZE));

			// If the input stream is a raw elementary stream, skip everything MPEG-PS related and go straight to elementary stream parsing
			if (raw_es)
			{
				if (elementary_stream::is_enabled(elementary_streams[pack_es_type_idx][0]))
				{
					elementary_streams[pack_es_type_idx][0]->set_pes_packet_data(pack);
				}

				state = state::elementary_stream;
				return true;
			}

			// While LLE is actually searching the entire section for a pack start code or program end code,
			// it doesn't set its current reading position to the address where it found the code, so it would bug out if there isn't one at the start of the section

			if (const be_t<u32> code = read_from_ptr<be_t<u32>>(pack); code == PACK_START)
			{
				break;
			}
			else if (code == PROG_END)
			{
				if (!on_prog_end())
				{
					state = state::prog_end;
				}

				return true;
			}

			cellDmuxPamf.warning("No start code found at the beginning of the current section");
		}

		// Skip over pack header
		const u8 pack_stuffing_length = read_from_ptr<bf_t<u8, 0, 3>>(pack, PACK_STUFFING_LENGTH_OFFSET);

		// Not checked on LLE, the SPU task would just increment the reading position and read random data in the SPU local store
		if (PACK_STUFFING_LENGTH_OFFSET + sizeof(u8) + pack_stuffing_length + PES_HEADER_DATA_LENGTH_OFFSET + sizeof(u8) > pack.size())
		{
			cellDmuxPamf.error("Invalid pack stuffing length");
			return false;
		}

		std::span<const u8> current_pes_packet = pack.subspan(PACK_STUFFING_LENGTH_OFFSET + sizeof(u8) + pack_stuffing_length);

		if (read_from_ptr<bf_t<be_t<u32>, 8, 24>>(current_pes_packet) != PACKET_START_CODE_PREFIX)
		{
			cellDmuxPamf.error("Invalid start code after pack header");
			return false;
		}

		// Skip over system header if present
		if (read_from_ptr<be_t<u32>>(current_pes_packet) == SYSTEM_HEADER)
		{
			const u32 system_header_length = read_from_ptr<be_t<u16>>(current_pes_packet.begin(), PES_PACKET_LENGTH_OFFSET) + PES_PACKET_LENGTH_OFFSET + sizeof(u16);

			// Not checked on LLE, the SPU task would just increment the reading position and read random data in the SPU local store
			if (system_header_length + PES_HEADER_DATA_LENGTH_OFFSET + sizeof(u8) > current_pes_packet.size())
			{
				cellDmuxPamf.error("Invalid system header length");
				return false;
			}

			current_pes_packet = current_pes_packet.subspan(system_header_length);

			// The SPU thread isn't doing load + rotate here for 4-byte loading (in valid PAMF streams, the next start code after a system header is always 0x10 byte aligned)
			const u32 offset_low = (current_pes_packet.data() - pack.data()) & 0xf;
			current_pes_packet = { current_pes_packet.begin() - offset_low, current_pes_packet.end() };

			if (const be_t<u32> code = read_from_ptr<be_t<u32>>(current_pes_packet); code >> 8 != PACKET_START_CODE_PREFIX)
			{
				cellDmuxPamf.error("Invalid start code after system header");
				return false;
			}
			else if (code == PRIVATE_STREAM_2)
			{
				// A system header is optionally followed by a private stream 2
				// The first two bytes of the stream are the stream id of a video stream. The next access unit of that stream is a random access point/keyframe

				const u16 pes_packet_length = read_from_ptr<be_t<u16>>(current_pes_packet.begin(), PES_PACKET_LENGTH_OFFSET) + PES_PACKET_LENGTH_OFFSET + sizeof(u16);

				// Not checked on LLE, the SPU task would just increment the reading position and read random data in the SPU local store
				if (pes_packet_length + PES_HEADER_DATA_LENGTH_OFFSET + sizeof(u8) > current_pes_packet.size())
				{
					cellDmuxPamf.error("Invalid private stream 2 length");
					return false;
				}

				if (const u8 channel = read_from_ptr<be_t<u16>>(current_pes_packet.begin(), PES_PACKET_LENGTH_OFFSET + sizeof(u16)) & 0xf;
					elementary_stream::is_enabled(elementary_streams[0][channel]))
				{
					elementary_streams[0][channel]->set_rap();
				}

				current_pes_packet = current_pes_packet.subspan(pes_packet_length);
			}
		}

		// Parse PES packet
		// LLE only parses the first PES packet per pack (valid PAMF streams only have one PES packet per pack, not including the system header + private stream 2)

		const u32 pes_packet_start_code = read_from_ptr<be_t<u32>>(current_pes_packet);

		if (pes_packet_start_code >> 8 != PACKET_START_CODE_PREFIX)
		{
			cellDmuxPamf.error("Invalid start code");
			return false;
		}

		const u16 pes_packet_length = read_from_ptr<be_t<u16>>(current_pes_packet.begin(), PES_PACKET_LENGTH_OFFSET) + PES_PACKET_LENGTH_OFFSET + sizeof(u16);
		const u8 pes_header_data_length = read_from_ptr<u8>(current_pes_packet.begin(), PES_HEADER_DATA_LENGTH_OFFSET) + PES_HEADER_DATA_LENGTH_OFFSET + sizeof(u8);

		// Not checked on LLE, the SPU task would just increment the reading position and read random data in the SPU local store
		if (pes_packet_length > current_pes_packet.size() || pes_packet_length <= pes_header_data_length)
		{
			cellDmuxPamf.error("Invalid pes packet length");
			return false;
		}

		const std::span<const u8> pes_packet_data = current_pes_packet.subspan(pes_header_data_length, pes_packet_length - pes_header_data_length);

		const auto [type_idx, channel] = dmuxPamfStreamIdToTypeChannel(pes_packet_start_code, read_from_ptr<u8>(pes_packet_data));

		if (type_idx == DMUX_PAMF_STREAM_TYPE_INDEX_INVALID)
		{
			cellDmuxPamf.error("Invalid stream type");
			return false;
		}

		pack_es_type_idx = type_idx;
		pack_es_channel = channel;

		if (elementary_stream::is_enabled(elementary_streams[type_idx][channel]))
		{
			const s8 pts_dts_flag = read_from_ptr<s8>(current_pes_packet.begin(), PTS_DTS_FLAG_OFFSET);

			if (pts_dts_flag < 0)
			{
				// The timestamps should be unsigned, but are sign-extended from s32 to u64 on LLE. They probably forgot about integer promotion
				const s32 PTS_32_30 = read_from_ptr<bf_t<u8, 1, 7>>(current_pes_packet.begin(), 9);
				const s32 PTS_29_15 = read_from_ptr<bf_t<be_t<u16>, 1, 15>>(current_pes_packet.begin(), 10);
				const s32 PTS_14_0 = read_from_ptr<bf_t<be_t<u16>, 1, 15>>(current_pes_packet.begin(), 12);

				elementary_streams[type_idx][channel]->set_pts(PTS_32_30 << 30 | PTS_29_15 << 15 | PTS_14_0); // Bit 32 is discarded
			}

			if (pts_dts_flag & 0x40)
			{
				const s32 DTS_32_30 = read_from_ptr<bf_t<u8, 1, 7>>(current_pes_packet.begin(), 14);
				const s32 DTS_29_15 = read_from_ptr<bf_t<be_t<u16>, 1, 15>>(current_pes_packet.begin(), 15);
				const s32 DTS_14_0 = read_from_ptr<bf_t<be_t<u16>, 1, 15>>(current_pes_packet.begin(), 17);

				elementary_streams[type_idx][channel]->set_dts(DTS_32_30 << 30 | DTS_29_15 << 15 | DTS_14_0); // Bit 32 is discarded
			}

			const usz stream_header_size = elementary_streams[type_idx][channel]->parse_stream_header(pes_packet_data, pts_dts_flag);

			// Not checked on LLE, the SPU task would just increment the reading position and read random data in the SPU local store
			if (stream_header_size > pes_packet_data.size())
			{
				cellDmuxPamf.error("Invalid stream header size");
				return false;
			}

			elementary_streams[type_idx][channel]->set_pes_packet_data(pes_packet_data.subspan(stream_header_size));
		}

		state = state::elementary_stream;
		[[fallthrough]];
	}
	case state::elementary_stream:
	{
		if (!elementary_stream::is_enabled(elementary_streams[pack_es_type_idx][pack_es_channel]) || elementary_streams[pack_es_type_idx][pack_es_channel]->process_pes_packet_data())
		{
			state = state::initial;
		}

		return true;
	}
	case state::prog_end:
	{
		if (on_prog_end())
		{
			state = state::initial;
		}

		return true;
	}
	default:
		fmt::throw_exception("Unreachable");
	}
}

u32 dmux_pamf_base::get_enabled_es_count() const
{
	return static_cast<u32>(std::ranges::count_if(elementary_streams | std::views::join, elementary_stream::is_enabled));
}

bool dmux_pamf_spu_context::get_next_cmd(DmuxPamfCommand& lhs, bool new_stream) const
{
	cellDmuxPamf.trace("Getting next command");

	if (cmd_queue->pop(lhs))
	{
		cellDmuxPamf.trace("Command type: %d", static_cast<u32>(lhs.type.get()));
		return true;
	}

	if ((new_stream || has_work()) && !wait_for_au_queue && !wait_for_event_queue)
	{
		cellDmuxPamf.trace("No new command, continuing demuxing");
		return false;
	}

	cellDmuxPamf.trace("No new command and nothing to do, waiting...");

	cmd_queue->wait();

	if (thread_ctrl::state() == thread_state::aborting)
	{
		return false;
	}

	ensure(cmd_queue->pop(lhs));

	cellDmuxPamf.trace("Command type: %d", static_cast<u32>(lhs.type.get()));
	return true;
}

bool dmux_pamf_spu_context::send_event(auto&&... args) const
{
	if (event_queue->size() >= max_enqueued_events)
	{
		return false;
	}

	return ensure(event_queue->emplace(std::forward<decltype(args)>(args)..., event_queue_was_too_full));
}

void dmux_pamf_spu_context::operator()() // cellSpursMain()
{
	DmuxPamfCommand cmd;

	while (thread_ctrl::state() != thread_state::aborting)
	{
		if (get_next_cmd(cmd, new_stream))
		{
			event_queue_was_too_full = wait_for_event_queue;
			wait_for_event_queue = false;
			wait_for_au_queue = false;

			ensure(cmd_result_queue->emplace(static_cast<u32>(cmd.type.value()) + 1));

			switch (cmd.type)
			{
			case DmuxPamfCommandType::enable_es:
				max_enqueued_events += 2;
				enable_es(cmd.enable_es.stream_id, cmd.enable_es.private_stream_id, cmd.enable_es.is_avc, { cmd.enable_es.au_queue_buffer.get_ptr(), cmd.enable_es.au_queue_buffer_size },
					cmd.enable_es.au_max_size, cmd.enable_es.is_raw_es, cmd.enable_es.user_data);
				break;

			case DmuxPamfCommandType::disable_es:
				disable_es(cmd.disable_flush_es.stream_id, cmd.disable_flush_es.private_stream_id);
				max_enqueued_events -= 2;
				break;

			case DmuxPamfCommandType::set_stream:
				new_stream = true;
				break;

			case DmuxPamfCommandType::release_au:
				release_au(cmd.release_au.stream_id, cmd.release_au.private_stream_id, cmd.release_au.au_size);
				break;

			case DmuxPamfCommandType::flush_es:
				flush_es(cmd.disable_flush_es.stream_id, cmd.disable_flush_es.private_stream_id);
				break;

			case DmuxPamfCommandType::close:
				while (!send_event(DmuxPamfEventType::close)) {}
				return;

			case DmuxPamfCommandType::reset_stream:
				reset_stream();
				break;

			case DmuxPamfCommandType::reset_es:
				reset_es(cmd.reset_es.stream_id, cmd.reset_es.private_stream_id, cmd.reset_es.au_addr ? cmd.reset_es.au_addr.get_ptr() : nullptr);
				break;

			case DmuxPamfCommandType::resume:
				break;

			default:
				cellDmuxPamf.error("Invalid command");
				return;
			}
		}
		else if (thread_ctrl::state() == thread_state::aborting)
		{
			return;
		}

		// Only set the new stream once the previous one has been entirely consumed
		if (new_stream && !has_work())
		{
			new_stream = false;

			DmuxPamfStreamInfo stream_info;
			ensure(stream_info_queue->pop(stream_info));

			set_stream({ stream_info.stream_addr.get_ptr(), stream_info.stream_size }, stream_info.continuity);
		}

		process_next_pack();
	}
}

void dmux_pamf_base::elementary_stream::save(utils::serial& ar)
{
	// These need to be saved first since they need to be initialized in the constructor's initializer list
	if (ar.is_writing())
	{
		ar(au_max_size, user_data);
		au_queue.save(ar);
	}

	ar(state, au_size_unk, au_specific_info_buf, current_au, pts, dts, rap);

	if (state == state::pushing_au_queue)
	{
		ar(au_chunk.cached_data);

		if (ar.is_writing())
		{
			ar(vm::get_addr(au_chunk.data.data()), static_cast<u16>(au_chunk.data.size()));
		}
		else
		{
			au_chunk.data = { vm::_ptr<const u8>(ar.pop<vm::addr_t>()), ar.pop<u16>() };
		}
	}

	if (current_au.state != access_unit::state::complete)
	{
		ar(cache);
	}

	bool save_stream = !!pes_packet_data;
	ar(save_stream);

	if (save_stream)
	{
		if (ar.is_writing())
		{
			ensure(stream_chunk.size() <= pes_packet_data->size());
			ar(vm::get_addr(pes_packet_data->data()), static_cast<u16>(pes_packet_data->size()), static_cast<u16>(stream_chunk.data() - pes_packet_data->data()));
		}
		else
		{
			pes_packet_data = { vm::_ptr<const u8>(ar.pop<vm::addr_t>()), ar.pop<u16>() };
			stream_chunk = { pes_packet_data->begin() + ar.pop<u16>(), pes_packet_data->end() };
		}
	}
}

void dmux_pamf_base::save_base(utils::serial& ar)
{
	bool stream_not_consumed = !!stream;

	ar(state, stream_not_consumed, demux_done_notified, pack_es_type_idx, raw_es);

	if (stream_not_consumed)
	{
		if (ar.is_writing())
		{
			ar(vm::get_addr(stream->data()), static_cast<u32>(stream->size()));
		}
		else
		{
			stream = std::span{ vm::_ptr<const u8>(ar.pop<vm::addr_t>()), ar.pop<u32>() };
		}
	}

	if (state == state::elementary_stream)
	{
		ar(pack_es_channel);
	}

	std::array<bool, 0x10> enabled_video_streams;
	std::array<bool, 0x10> avc_video_streams;
	std::array<bool, 0x10> enabled_lpcm_streams;
	std::array<bool, 0x10> enabled_ac3_streams;
	std::array<bool, 0x10> enabled_atracx_streams;
	std::array<bool, 0x10> enabled_user_data_streams;

	if (ar.is_writing())
	{
		std::ranges::transform(elementary_streams[DMUX_PAMF_STREAM_TYPE_INDEX_VIDEO], enabled_video_streams.begin(), elementary_stream::is_enabled);
		std::ranges::transform(elementary_streams[DMUX_PAMF_STREAM_TYPE_INDEX_VIDEO], avc_video_streams.begin(), [](auto& es){ return !!dynamic_cast<video_stream<true>*>(es.get()); });
		std::ranges::transform(elementary_streams[DMUX_PAMF_STREAM_TYPE_INDEX_LPCM], enabled_lpcm_streams.begin(), elementary_stream::is_enabled);
		std::ranges::transform(elementary_streams[DMUX_PAMF_STREAM_TYPE_INDEX_AC3], enabled_ac3_streams.begin(), elementary_stream::is_enabled);
		std::ranges::transform(elementary_streams[DMUX_PAMF_STREAM_TYPE_INDEX_ATRACX], enabled_atracx_streams.begin(), elementary_stream::is_enabled);
		std::ranges::transform(elementary_streams[DMUX_PAMF_STREAM_TYPE_INDEX_USER_DATA], enabled_user_data_streams.begin(), elementary_stream::is_enabled);
	}

	ar(enabled_video_streams, avc_video_streams, enabled_lpcm_streams, enabled_ac3_streams, enabled_atracx_streams, enabled_user_data_streams);

	if (ar.is_writing())
	{
		std::ranges::for_each(elementary_streams | std::views::join | std::views::filter(elementary_stream::is_enabled), [&](const auto& es){ es->save(ar); });
	}
	else
	{
		for (u32 ch = 0; ch < 0x10; ch++)
		{
			if (enabled_video_streams[ch])
			{
				elementary_streams[DMUX_PAMF_STREAM_TYPE_INDEX_VIDEO][ch] = avc_video_streams[ch] ? static_cast<std::unique_ptr<elementary_stream>>(std::make_unique<video_stream<true>>(ar, ch, *this))
					: std::make_unique<video_stream<false>>(ar, ch, *this);
			}
		}

		for (u32 ch = 0; ch < 0x10; ch++)
		{
			if (enabled_lpcm_streams[ch])
			{
				elementary_streams[DMUX_PAMF_STREAM_TYPE_INDEX_LPCM][ch] = std::make_unique<lpcm_stream>(ar, ch, *this);
			}
		}

		for (u32 ch = 0; ch < 0x10; ch++)
		{
			if (enabled_ac3_streams[ch])
			{
				elementary_streams[DMUX_PAMF_STREAM_TYPE_INDEX_AC3][ch] = std::make_unique<audio_stream<true>>(ar, ch, *this);
			}
		}

		for (u32 ch = 0; ch < 0x10; ch++)
		{
			if (enabled_atracx_streams[ch])
			{
				elementary_streams[DMUX_PAMF_STREAM_TYPE_INDEX_ATRACX][ch] = std::make_unique<audio_stream<false>>(ar, ch, *this);
			}
		}

		for (u32 ch = 0; ch < 0x10; ch++)
		{
			if (enabled_user_data_streams[ch])
			{
				elementary_streams[DMUX_PAMF_STREAM_TYPE_INDEX_USER_DATA][ch] = std::make_unique<user_data_stream>(ar, ch, *this);
			}
		}
	}
}

void dmux_pamf_spu_context::save(utils::serial& ar)
{
	USING_SERIALIZATION_VERSION(cellDmuxPamf);
	ar(cmd_queue, new_stream); // The queues are contiguous in guest memory, so we only need to save the address of the first one
	save_base(ar);
}


// PPU thread

template <auto Syscall>
static auto lv2_syscall(ppu_thread& ppu, auto&&... args)
{
	const auto ret = Syscall(ppu, std::forward<decltype(args)>(args)...);

	if (ppu.test_stopped())
	{
		ppu.state += cpu_flag::again;
	}

	return ret;
}

template <DmuxPamfCommandType type>
void DmuxPamfContext::send_spu_command_and_wait(ppu_thread& ppu, bool waiting_for_spu_state, auto&&... cmd_params)
{
	if (!waiting_for_spu_state)
	{
		// The caller is supposed to own the mutex until the SPU thread has consumed the command, so the queue should always be empty here
		ensure(cmd_queue.emplace(type, std::forward<decltype(cmd_params)>(cmd_params)...), "The command queue wasn't empty");
	}

	lv2_obj::sleep(ppu);

	// Block until the SPU thread has consumed the command
	cmd_result_queue.wait();

	if (ppu.check_state())
	{
		ppu.state += cpu_flag::again;
		return;
	}

	be_t<u32> result{};
	ensure(cmd_result_queue.pop(result), "The result queue was empty");
	ensure(result == static_cast<u32>(type) + 1, "The HLE SPU thread sent an invalid result");
}

DmuxPamfElementaryStream* DmuxPamfContext::find_es(u16 stream_id, u16 private_stream_id)
{
	const auto it = dmuxPamfStreamIdToTypeChannel(stream_id, private_stream_id).first == DMUX_PAMF_STREAM_TYPE_INDEX_VIDEO
		? std::ranges::find_if(elementary_streams | std::views::reverse, [&](const auto& es){ return es && es->stream_id == stream_id; })
		: std::ranges::find_if(elementary_streams | std::views::reverse, [&](const auto& es){ return es && es->stream_id == stream_id && es->private_stream_id == private_stream_id; });

	return it != std::ranges::rend(elementary_streams) ? it->get_ptr() : nullptr;
}

error_code DmuxPamfContext::wait_au_released_or_stream_reset(ppu_thread& ppu, u64 au_queue_full_bitset, b8& stream_reset_started, dmux_pamf_state& savestate)
{
	if (savestate == dmux_pamf_state::waiting_for_au_released)
	{
		goto label1_waiting_for_au_released_state;
	}

	if (lv2_syscall<sys_mutex_lock>(ppu, mutex, 0) != CELL_OK)
	{
		return CELL_DMUX_PAMF_ERROR_FATAL;
	}

	if (ppu.state & cpu_flag::again)
	{
		return {};
	}

	if (au_queue_full_bitset)
	{
		cellDmuxPamf.trace("Access unit queue of elementary stream no. %d is full. Waiting for access unit to be released...", std::countr_zero(au_queue_full_bitset));

		while (!(au_queue_full_bitset & au_released_bitset) && !stream_reset_requested)
		{
			savestate = dmux_pamf_state::waiting_for_au_released;
			label1_waiting_for_au_released_state:

			if (lv2_syscall<sys_cond_wait>(ppu, cond, 0) != CELL_OK)
			{
				sys_mutex_unlock(ppu, mutex);
				return CELL_DMUX_PAMF_ERROR_FATAL;
			}

			if (ppu.state & cpu_flag::again)
			{
				return {};
			}
		}

		cellDmuxPamf.trace("Access unit released");
	}

	stream_reset_started = stream_reset_requested;
	stream_reset_requested = false;

	au_released_bitset = 0;

	return sys_mutex_unlock(ppu, mutex) != CELL_OK ? static_cast<error_code>(CELL_DMUX_PAMF_ERROR_FATAL) : CELL_OK;
}

template <bool reset>
error_code DmuxPamfContext::set_au_reset(ppu_thread& ppu)
{
	if (lv2_syscall<sys_mutex_lock>(ppu, mutex, 0) != CELL_OK)
	{
		return CELL_DMUX_PAMF_ERROR_FATAL;
	}

	if (ppu.state & cpu_flag::again)
	{
		return {};
	}

	std::ranges::for_each(elementary_streams | std::views::filter([](auto es){ return !!es; }), [](auto& reset_next_au) { reset_next_au = reset; }, &DmuxPamfElementaryStream::reset_next_au);

	return sys_mutex_unlock(ppu, mutex) == CELL_OK ? static_cast<error_code>(CELL_OK) : CELL_DMUX_PAMF_ERROR_FATAL;
}

template <typename F>
error_code DmuxPamfContext::callback(ppu_thread& ppu, DmuxCb<F> cb, auto&&... args)
{
	std::unique_lock savestate_lock{ g_fxo->get<hle_locks_t>(), std::try_to_lock };

	if (!savestate_lock.owns_lock())
	{
		ppu.state += cpu_flag::again;
		return {};
	}

	return cb.cbFunc(ppu, std::forward<decltype(args)>(args)..., cb.cbArg);
}

void DmuxPamfContext::run_spu_thread()
{
	hle_spu_thread_id = idm::make<dmux_pamf_spu_thread>(cmd_queue_addr, cmd_result_queue_addr, stream_info_queue_addr, event_queue_addr);
}

void DmuxPamfContext::exec(ppu_thread& ppu)
{
	// This is repeated a lot in this function, in my opinion using a define here makes it more readable
#define RETURN_ON_CPU_FLAG_AGAIN()\
	if (ppu.state & cpu_flag::again)\
		return

	switch (savestate)
	{
	case dmux_pamf_state::initial: break;
	case dmux_pamf_state::waiting_for_au_released: goto label1_waiting_for_au_released_state;
	case dmux_pamf_state::waiting_for_au_released_error: goto label2_waiting_for_au_released_error_state;
	case dmux_pamf_state::waiting_for_event: goto label3_waiting_for_event_state;
	case dmux_pamf_state::starting_demux_done: goto label4_starting_demux_done_state;
	case dmux_pamf_state::starting_demux_done_mutex_lock_error: goto label5_starting_demux_done_mutex_lock_error_state;
	case dmux_pamf_state::starting_demux_done_mutex_unlock_error: goto label6_starting_demux_done_mutex_unlock_error_state;
	case dmux_pamf_state::starting_demux_done_checking_stream_reset: goto label7_starting_demux_done_check_stream_reset_state;
	case dmux_pamf_state::starting_demux_done_checking_stream_reset_error: goto label8_start_demux_done_check_stream_reset_error_state;
	case dmux_pamf_state::setting_au_reset: goto label9_setting_au_reset_state;
	case dmux_pamf_state::setting_au_reset_error: goto label10_setting_au_reset_error_state;
	case dmux_pamf_state::processing_event: goto label11_processing_event_state;
	case dmux_pamf_state::au_found_waiting_for_spu: goto label12_au_found_waiting_for_spu_state;
	case dmux_pamf_state::unsetting_au_reset: goto label13_unsetting_au_reset_state;
	case dmux_pamf_state::demux_done_notifying: goto label14_demux_done_notifying_state;
	case dmux_pamf_state::demux_done_mutex_lock: goto label15_demux_done_mutex_lock_state;
	case dmux_pamf_state::demux_done_cond_signal: goto label16_demux_done_cond_signal_state;
	case dmux_pamf_state::resuming_demux_mutex_lock: goto label17_resuming_demux_mutex_lock_state;
	case dmux_pamf_state::resuming_demux_waiting_for_spu: goto label18_resuming_demux_waiting_for_spu_state;
	case dmux_pamf_state::sending_fatal_err: ; // Handled below
	}

	for (;;)
	{
		if (savestate == dmux_pamf_state::sending_fatal_err)
		{
			callback(ppu, notify_fatal_err, _this, CELL_OK);
			RETURN_ON_CPU_FLAG_AGAIN();
		}

		savestate = dmux_pamf_state::initial;

		stream_reset_started = false;

		// If the access unit queue of an enabled elementary stream is full, wait until the user releases an access unit or requests a stream reset before processing the next event
		label1_waiting_for_au_released_state:

		if (wait_au_released_or_stream_reset(ppu, au_queue_full_bitset, stream_reset_started, savestate) != CELL_OK)
		{
			savestate = dmux_pamf_state::waiting_for_au_released_error;
			label2_waiting_for_au_released_error_state:

			callback(ppu, notify_fatal_err, _this, CELL_OK);
		}

		RETURN_ON_CPU_FLAG_AGAIN();

		// Wait for the next event
		if (!event_queue.peek(event))
		{
			savestate = dmux_pamf_state::waiting_for_event;
			label3_waiting_for_event_state:

			cellDmuxPamf.trace("Waiting for the next event...");

			lv2_obj::sleep(ppu);
			event_queue.wait();

			if (ppu.check_state())
			{
				ppu.state += cpu_flag::again;
				return;
			}

			ensure(event_queue.peek(event));
		}

		cellDmuxPamf.trace("Event type: %d", static_cast<u32>(event.type.get()));

		// If the event is a demux done event, set the sequence state to resetting and check for a potential stream reset request again
		if (event.type == DmuxPamfEventType::demux_done)
		{
			savestate = dmux_pamf_state::starting_demux_done;
			label4_starting_demux_done_state:

			if (lv2_syscall<sys_mutex_lock>(ppu, mutex, 0) != CELL_OK)
			{
				savestate = dmux_pamf_state::starting_demux_done_mutex_lock_error;
				label5_starting_demux_done_mutex_lock_error_state:

				callback(ppu, notify_fatal_err, _this, CELL_OK);
			}

			RETURN_ON_CPU_FLAG_AGAIN();

			sequence_state = DmuxPamfSequenceState::resetting;

			if (sys_mutex_unlock(ppu, mutex) != CELL_OK)
			{
				savestate = dmux_pamf_state::starting_demux_done_mutex_unlock_error;
				label6_starting_demux_done_mutex_unlock_error_state:

				callback(ppu, notify_fatal_err, _this, CELL_OK);

				RETURN_ON_CPU_FLAG_AGAIN();
			}

			if (!stream_reset_started)
			{
				savestate = dmux_pamf_state::starting_demux_done_checking_stream_reset;
				label7_starting_demux_done_check_stream_reset_state:

				if (wait_au_released_or_stream_reset(ppu, 0, stream_reset_started, savestate) != CELL_OK)
				{
					savestate = dmux_pamf_state::starting_demux_done_checking_stream_reset_error;
					label8_start_demux_done_check_stream_reset_error_state:

					callback(ppu, notify_fatal_err, _this, CELL_OK);
				}

				RETURN_ON_CPU_FLAG_AGAIN();
			}
		}

		// If the user requested a stream reset, set the reset flag for every enabled elementary stream
		if (stream_reset_started)
		{
			stream_reset_in_progress = true;

			savestate = dmux_pamf_state::setting_au_reset;
			label9_setting_au_reset_state:

			if (set_au_reset<true>(ppu) != CELL_OK)
			{
				savestate = dmux_pamf_state::setting_au_reset_error;
				label10_setting_au_reset_error_state:

				callback(ppu, notify_fatal_err, _this, CELL_OK);
			}

			RETURN_ON_CPU_FLAG_AGAIN();
		}

		savestate = dmux_pamf_state::processing_event;
		label11_processing_event_state:

		switch (event.type)
		{
		case DmuxPamfEventType::au_found:
		{
			if (lv2_syscall<sys_mutex_lock>(ppu, mutex, 0) != CELL_OK)
			{
				savestate = dmux_pamf_state::sending_fatal_err;
				continue;
			}

			RETURN_ON_CPU_FLAG_AGAIN();

			label12_au_found_waiting_for_spu_state:

			DmuxPamfElementaryStream* const es = find_es(event.au_found.stream_id, event.au_found.private_stream_id);

			// If the elementary stream of the found access unit is not enabled, don't do anything
			if (!es || es->_this.get_ptr() != es || es->es_id != event.au_found.user_data)
			{
				if (sys_mutex_unlock(ppu, mutex) != CELL_OK)
				{
					savestate = dmux_pamf_state::sending_fatal_err;
					continue;
				}

				break;
			}

			// If a stream reset was requested, don't notify the user of any found access units that are still in the event queue
			// We need to send the SPU thread the address of the first found access unit for each elementary stream still in the event queue,
			// so that it can remove the access units from the queue.
			if (stream_reset_in_progress)
			{
				if (es->reset_next_au)
				{
					send_spu_command_and_wait<DmuxPamfCommandType::reset_es>(ppu, savestate == dmux_pamf_state::au_found_waiting_for_spu,
						event.au_found.stream_id, event.au_found.private_stream_id, event.au_found.au_addr);

					if (ppu.state & cpu_flag::again)
					{
						savestate = dmux_pamf_state::au_found_waiting_for_spu;
						return;
					}

					es->reset_next_au = false;
				}

				if (sys_mutex_unlock(ppu, mutex) != CELL_OK)
				{
					savestate = dmux_pamf_state::sending_fatal_err;
					continue;
				}

				break;
			}

			const vm::var<DmuxPamfAuInfo> au_info;
			au_info->addr = std::bit_cast<vm::bptr<void, u64>>(event.au_found.au_addr);
			au_info->size = event.au_found.au_size;
			au_info->pts = event.au_found.pts;
			au_info->dts = event.au_found.dts;
			au_info->user_data = user_data;
			au_info->specific_info = es->_this.ptr(&DmuxPamfElementaryStream::au_specific_info);
			au_info->specific_info_size = es->au_specific_info_size;
			au_info->is_rap = static_cast<b8>(event.au_found.is_rap);

			if (!is_raw_es && dmuxPamfStreamIdToTypeChannel(event.au_found.stream_id, event.au_found.private_stream_id).first == DMUX_PAMF_STREAM_TYPE_INDEX_LPCM)
			{
				es->au_specific_info[0] = read_from_ptr<bf_t<u8, 4, 4>>(event.au_found.stream_header_buf);
				es->au_specific_info[1] = read_from_ptr<bf_t<u8, 0, 4>>(event.au_found.stream_header_buf);
				es->au_specific_info[2] = read_from_ptr<bf_t<u8, 6, 2>>(event.au_found.stream_header_buf, 1);
			}

			if (sys_mutex_unlock(ppu, mutex) != CELL_OK)
			{
				savestate = dmux_pamf_state::sending_fatal_err;
				continue;
			}

			if (callback(ppu, es->notify_au_found, es->_this, au_info) != CELL_OK)
			{
				// If the callback returns an error, the access unit queue for this elementary stream is full
				au_queue_full_bitset |= 1ull << es->this_index;
				continue;
			}

			RETURN_ON_CPU_FLAG_AGAIN();

			break;
		}
		case DmuxPamfEventType::demux_done:
		{
			if (stream_reset_in_progress)
			{
				stream_reset_in_progress = false;

				savestate = dmux_pamf_state::unsetting_au_reset;
				label13_unsetting_au_reset_state:

				if (set_au_reset<false>(ppu) != CELL_OK)
				{
					savestate = dmux_pamf_state::sending_fatal_err;
					continue;
				}

				RETURN_ON_CPU_FLAG_AGAIN();
			}

			savestate = dmux_pamf_state::demux_done_notifying;
			label14_demux_done_notifying_state:

			callback(ppu, notify_demux_done, _this, CELL_OK);

			RETURN_ON_CPU_FLAG_AGAIN();

			savestate = dmux_pamf_state::demux_done_mutex_lock;
			label15_demux_done_mutex_lock_state:

			if (lv2_syscall<sys_mutex_lock>(ppu, mutex, 0) != CELL_OK)
			{
				savestate = dmux_pamf_state::sending_fatal_err;
				continue;
			}

			RETURN_ON_CPU_FLAG_AGAIN();

			if (sequence_state == DmuxPamfSequenceState::resetting)
			{
				sequence_state = DmuxPamfSequenceState::dormant;

				savestate = dmux_pamf_state::demux_done_cond_signal;
				label16_demux_done_cond_signal_state:

				if (lv2_syscall<sys_cond_signal_all>(ppu, cond) != CELL_OK)
				{
					sys_mutex_unlock(ppu, mutex);

					savestate = dmux_pamf_state::sending_fatal_err;
					continue;
				}

				RETURN_ON_CPU_FLAG_AGAIN();
			}

			if (sys_mutex_unlock(ppu, mutex) != CELL_OK)
			{
				savestate = dmux_pamf_state::sending_fatal_err;
				continue;
			}

			break;
		}
		case DmuxPamfEventType::close:
		{
			while (event_queue.pop()){} // Clear the event queue
			return;
		}
		case DmuxPamfEventType::flush_done:
		{
			if (lv2_syscall<sys_mutex_lock>(ppu, mutex, 0) != CELL_OK)
			{
				savestate = dmux_pamf_state::sending_fatal_err;
				continue;
			}

			RETURN_ON_CPU_FLAG_AGAIN();

			DmuxPamfElementaryStream* const es = find_es(event.flush_done.stream_id, event.flush_done.private_stream_id);
			const bool valid = es && es->_this.get_ptr() == es && es->es_id == event.flush_done.user_data;

			if (sys_mutex_unlock(ppu, mutex) != CELL_OK)
			{
				savestate = dmux_pamf_state::sending_fatal_err;
				continue;
			}

			if (valid)
			{
				callback(ppu, es->notify_flush_done, es->_this);

				RETURN_ON_CPU_FLAG_AGAIN();
			}

			break;
		}
		case DmuxPamfEventType::prog_end_code:
		{
			callback(ppu, notify_prog_end_code, _this);

			RETURN_ON_CPU_FLAG_AGAIN();

			break;
		}
		case DmuxPamfEventType::fatal_error:
		{
			ensure(event_queue.pop());

			savestate = dmux_pamf_state::sending_fatal_err;
			continue;
		}
		default:
			fmt::throw_exception("Invalid event");
		}

		ensure(event_queue.pop());

		// If there are too many events enqueued, the SPU thread will stop demuxing until it receives a new command.
		// Once the event queue size is reduced to two, send a resume command
		if (enabled_es_num >= 0 && event_queue.size() == 2)
		{
			savestate = dmux_pamf_state::resuming_demux_mutex_lock;
			label17_resuming_demux_mutex_lock_state:

			if (lv2_syscall<sys_mutex_lock>(ppu, mutex, 0) != CELL_OK)
			{
				savestate = dmux_pamf_state::sending_fatal_err;
				continue;
			}

			RETURN_ON_CPU_FLAG_AGAIN();

			if (enabled_es_num >= 0)
			{
				ensure(cmd_queue.emplace(DmuxPamfCommandType::resume));

				savestate = dmux_pamf_state::resuming_demux_waiting_for_spu;
				label18_resuming_demux_waiting_for_spu_state:

				lv2_obj::sleep(ppu);
				cmd_result_queue.wait();

				if (ppu.check_state())
				{
					ppu.state += cpu_flag::again;
					return;
				}

				ensure(cmd_result_queue.pop());
			}

			if (sys_mutex_unlock(ppu, mutex) != CELL_OK)
			{
				savestate = dmux_pamf_state::sending_fatal_err;
				continue;
			}
		}

		au_queue_full_bitset = 0;
	}
}

void dmuxPamfEntry(ppu_thread& ppu, vm::ptr<DmuxPamfContext> dmux)
{
	dmux->exec(ppu);

	if (ppu.state & cpu_flag::again)
	{
		ppu.syscall_args[0] = dmux.addr();
		return;
	}

	ppu_execute<&sys_ppu_thread_exit>(ppu, CELL_OK);
}

error_code dmuxPamfVerifyEsSpecificInfo(u16 stream_id, u16 private_stream_id, bool is_avc, vm::cptr<void> es_specific_info)
{
	// The meaning of error code value 5 in here is inconsistent with how it's used elsewhere for some reason

	if (!es_specific_info)
	{
		return CELL_OK;
	}

	switch (dmuxPamfStreamIdToTypeChannel(stream_id, private_stream_id).first)
	{
	case DMUX_PAMF_STREAM_TYPE_INDEX_VIDEO:
		if (is_avc)
		{
			if (const u32 level = vm::static_ptr_cast<const CellDmuxPamfEsSpecificInfoAvc>(es_specific_info)->level;
				level != CELL_DMUX_PAMF_AVC_LEVEL_2P1 && level != CELL_DMUX_PAMF_AVC_LEVEL_3P0 && level != CELL_DMUX_PAMF_AVC_LEVEL_3P1
				&& level != CELL_DMUX_PAMF_AVC_LEVEL_3P2 && level != CELL_DMUX_PAMF_AVC_LEVEL_4P1 && level != CELL_DMUX_PAMF_AVC_LEVEL_4P2)
			{
				return 5;
			}
		}
		else if (vm::static_ptr_cast<const CellDmuxPamfEsSpecificInfoM2v>(es_specific_info)->profileLevel > CELL_DMUX_PAMF_M2V_MP_HL)
		{
			return 5;
		}

		return CELL_OK;

	case DMUX_PAMF_STREAM_TYPE_INDEX_LPCM:
		if (const auto [sampling_freq, nch, bps] = *vm::static_ptr_cast<const CellDmuxPamfEsSpecificInfoLpcm>(es_specific_info);
			sampling_freq != CELL_DMUX_PAMF_FS_48K || (nch != 1u && nch != 2u && nch != 6u && nch != 8u) || (bps != CELL_DMUX_PAMF_BITS_PER_SAMPLE_16 && bps != CELL_DMUX_PAMF_BITS_PER_SAMPLE_24))
		{
			return 5;
		}

		return CELL_OK;

	case DMUX_PAMF_STREAM_TYPE_INDEX_AC3:
	case DMUX_PAMF_STREAM_TYPE_INDEX_ATRACX:
	case DMUX_PAMF_STREAM_TYPE_INDEX_USER_DATA:
		return CELL_OK;

	default:
		return 5;
	}
}

template <bool raw_es>
u32 dmuxPamfGetAuSpecificInfoSize(u16 stream_id, u16 private_stream_id, bool is_avc)
{
	if constexpr (raw_es)
	{
		return 0;
	}

	switch (dmuxPamfStreamIdToTypeChannel(stream_id, private_stream_id).first)
	{
	case DMUX_PAMF_STREAM_TYPE_INDEX_VIDEO:
		if (is_avc)
		{
			return 4; // LLE returns four, even though CellDmuxPamfAuSpecificInfoAvc only has a reserved field like the others
		}

		return 0;

	case DMUX_PAMF_STREAM_TYPE_INDEX_LPCM:
	case DMUX_PAMF_STREAM_TYPE_INDEX_AC3: // LLE returns three, even though CellDmuxPamfAuSpecificInfoAc3 only has a reserved field like the others
		return 3;

	case DMUX_PAMF_STREAM_TYPE_INDEX_ATRACX:
	case DMUX_PAMF_STREAM_TYPE_INDEX_USER_DATA:
	default:
		return 0;
	}
}

u32 dmuxPamfGetAuQueueMaxSize(u16 stream_id, u16 private_stream_id)
{
	switch (dmuxPamfStreamIdToTypeChannel(stream_id, private_stream_id).first)
	{
	case DMUX_PAMF_STREAM_TYPE_INDEX_LPCM:
		return 0x100;

	case DMUX_PAMF_STREAM_TYPE_INDEX_VIDEO:
	case DMUX_PAMF_STREAM_TYPE_INDEX_AC3:
	case DMUX_PAMF_STREAM_TYPE_INDEX_ATRACX:
	case DMUX_PAMF_STREAM_TYPE_INDEX_USER_DATA:
		return 0x40;

	default:
		return 0;
	}
}

u32 dmuxPamfGetLpcmAuSize(vm::cptr<CellDmuxPamfEsSpecificInfoLpcm> lpcm_info)
{
	return lpcm_info->samplingFreq * lpcm_info->bitsPerSample / CHAR_BIT * (lpcm_info->numOfChannels + (lpcm_info->numOfChannels & 1)) / DMUX_PAMF_LPCM_FRAMES_PER_SEC; // Streams with an odd number of channels contain an empty dummy channel
}

u32 dmuxPamfGetAuQueueBufferSize(u16 stream_id, u16 private_stream_id, bool is_avc, vm::cptr<void> es_specific_info)
{
	switch (dmuxPamfStreamIdToTypeChannel(stream_id, private_stream_id).first)
	{
	case DMUX_PAMF_STREAM_TYPE_INDEX_VIDEO:
		if (is_avc)
		{
			if (!es_specific_info)
			{
				return 0x46a870;
			}

			switch (vm::static_ptr_cast<const CellDmuxPamfEsSpecificInfoAvc>(es_specific_info)->level)
			{
			case CELL_DMUX_PAMF_AVC_LEVEL_2P1: return 0xb00c0;
			case CELL_DMUX_PAMF_AVC_LEVEL_3P0: return 0x19f2e0;
			case CELL_DMUX_PAMF_AVC_LEVEL_3P1: return 0x260120;
			case CELL_DMUX_PAMF_AVC_LEVEL_3P2: return 0x35f6c0;
			case CELL_DMUX_PAMF_AVC_LEVEL_4P1: return 0x45e870;
			case CELL_DMUX_PAMF_AVC_LEVEL_4P2: // Same as below
			default:                           return 0x46a870;
			}
		}

		if (es_specific_info && vm::static_ptr_cast<const CellDmuxPamfEsSpecificInfoM2v>(es_specific_info)->profileLevel > CELL_DMUX_PAMF_M2V_MP_ML)
		{
			return 0x255000;
		}

		return 0x70000;

	case DMUX_PAMF_STREAM_TYPE_INDEX_LPCM:
	{
		if (!es_specific_info)
		{
			return 0x104380;
		}

		const u32 nch = vm::static_ptr_cast<const CellDmuxPamfEsSpecificInfoLpcm>(es_specific_info)->numOfChannels;
		const u32 lpcm_au_size = dmuxPamfGetLpcmAuSize(vm::static_ptr_cast<const CellDmuxPamfEsSpecificInfoLpcm>(es_specific_info));

		if (vm::static_ptr_cast<const CellDmuxPamfEsSpecificInfoLpcm>(es_specific_info)->samplingFreq <= 96000)
		{
			if (nch > 0 && nch <= 2)
			{
				return 0x20000 + lpcm_au_size;
			}

			if (nch <= 6)
			{
				return 0x60000 + lpcm_au_size;
			}

			if (nch <= 8)
			{
				return 0x80000 + lpcm_au_size;
			}

			return lpcm_au_size;
		}

		if (nch > 0 && nch <= 2)
		{
			return 0x60000 + lpcm_au_size;
		}

		if (nch <= 6)
		{
			return 0x100000 + lpcm_au_size;
		}

		return lpcm_au_size;
	}
	case DMUX_PAMF_STREAM_TYPE_INDEX_AC3:
		return 0xa000;

	case DMUX_PAMF_STREAM_TYPE_INDEX_ATRACX:
		return 0x6400;

	case DMUX_PAMF_STREAM_TYPE_INDEX_USER_DATA:
		return 0x160000;

	default:
		return 0;
	}
}

template <bool raw_es>
u32 dmuxPamfGetEsMemSize(u16 stream_id, u16 private_stream_id, bool is_avc, vm::cptr<void> es_specific_info)
{
	return dmuxPamfGetAuSpecificInfoSize<raw_es>(stream_id, private_stream_id, is_avc) * dmuxPamfGetAuQueueMaxSize(stream_id, private_stream_id)
		+ dmuxPamfGetAuQueueBufferSize(stream_id, private_stream_id, is_avc, es_specific_info) + 0x7f + static_cast<u32>(sizeof(DmuxPamfElementaryStream)) + 0xf;
}

error_code dmuxPamfNotifyDemuxDone(ppu_thread& ppu, [[maybe_unused]] vm::ptr<void> core_handle, error_code error, vm::ptr<CellDmuxPamfHandle> handle)
{
	handle->notify_demux_done.cbFunc(ppu, handle, error, handle->notify_demux_done.cbArg);
	return CELL_OK;
}

error_code dmuxPamfNotifyProgEndCode(ppu_thread& ppu, [[maybe_unused]] vm::ptr<void> core_handle, vm::ptr<CellDmuxPamfHandle> handle)
{
	if (handle->notify_prog_end_code.cbFunc)
	{
		handle->notify_prog_end_code.cbFunc(ppu, handle, handle->notify_prog_end_code.cbArg);
	}

	return CELL_OK;
}

error_code dmuxPamfNotifyFatalErr(ppu_thread& ppu, [[maybe_unused]] vm::ptr<void> core_handle, error_code error, vm::ptr<CellDmuxPamfHandle> handle)
{
	handle->notify_fatal_err.cbFunc(ppu, handle, error, handle->notify_fatal_err.cbArg);
	return CELL_OK;
}

error_code dmuxPamfEsNotifyAuFound(ppu_thread& ppu, [[maybe_unused]] vm::ptr<void> core_handle, vm::cptr<DmuxPamfAuInfo> au_info, vm::ptr<CellDmuxPamfEsHandle> handle)
{
	const vm::var<DmuxAuInfo> _au_info;
	_au_info->info.auAddr = au_info->addr;
	_au_info->info.auSize = au_info->size;
	_au_info->info.isRap = au_info->is_rap;
	_au_info->info.userData = au_info->user_data;
	_au_info->info.pts = au_info->pts;
	_au_info->info.dts = au_info->dts;
	_au_info->specific_info = au_info->specific_info;
	_au_info->specific_info_size = au_info->specific_info_size;
	// _au_info->info.auMaxSize is left uninitialized

	return handle->notify_au_found.cbFunc(ppu, handle, _au_info, handle->notify_au_found.cbArg);
}

error_code dmuxPamfEsNotifyFlushDone(ppu_thread& ppu, [[maybe_unused]] vm::ptr<void> core_handle, vm::ptr<CellDmuxPamfEsHandle> handle)
{
	return handle->notify_flush_done.cbFunc(ppu, handle, handle->notify_flush_done.cbArg);
}

error_code _CellDmuxCoreOpQueryAttr(vm::cptr<CellDmuxPamfSpecificInfo> pamfSpecificInfo, vm::ptr<CellDmuxPamfAttr> pamfAttr)
{
	cellDmuxPamf.notice("_CellDmuxCoreOpQueryAttr(pamfSpecificInfo=*0x%x, pamfAttr=*0x%x)", pamfSpecificInfo, pamfAttr);

	if (!pamfAttr || (pamfSpecificInfo && pamfSpecificInfo->thisSize != sizeof(CellDmuxPamfSpecificInfo)))
	{
		return CELL_DMUX_PAMF_ERROR_ARG;
	}

	pamfAttr->maxEnabledEsNum = DMUX_PAMF_MAX_ENABLED_ES_NUM;
	pamfAttr->version = DMUX_PAMF_VERSION;
	pamfAttr->memSize = sizeof(CellDmuxPamfHandle) + sizeof(DmuxPamfContext) + 0xe7b;

	return CELL_OK;
}

error_code DmuxPamfContext::open(ppu_thread& ppu, const CellDmuxPamfResource& res, vm::cptr<CellDmuxResourceSpurs> res_spurs, const DmuxCb<DmuxNotifyDemuxDone>& notify_dmux_done,
	const DmuxCb<DmuxNotifyProgEndCode>& notify_prog_end_code, const DmuxCb<DmuxNotifyFatalErr>& notify_fatal_err, vm::bptr<DmuxPamfContext>& handle)
{
	if (res.ppuThreadPriority >= 0xc00u || res.ppuThreadStackSize < 0x1000u || res.spuThreadPriority >= 0x100u || res.numOfSpus != 1u || !res.memAddr || res.memSize < sizeof(DmuxPamfContext) + 0xe7b)
	{
		return CELL_DMUX_PAMF_ERROR_ARG;
	}

	const auto _this = vm::ptr<DmuxPamfContext>::make(utils::align(+res.memAddr.addr(), 0x80));

	_this->_this = _this;
	_this->this_size = res.memSize;
	_this->version = DMUX_PAMF_VERSION;
	_this->notify_demux_done = notify_dmux_done;
	_this->notify_prog_end_code = notify_prog_end_code;
	_this->notify_fatal_err = notify_fatal_err;
	_this->resource = res;
	_this->unk = 0;
	_this->ppu_thread_stack_size = res.ppuThreadStackSize;
	_this->au_released_bitset = 0;
	_this->stream_reset_requested = false;
	_this->sequence_state = DmuxPamfSequenceState::dormant;
	_this->max_enabled_es_num = DMUX_PAMF_MAX_ENABLED_ES_NUM;
	_this->enabled_es_num = 0;
	std::ranges::fill(_this->elementary_streams, vm::null);
	_this->next_es_id = 0;

	const vm::var<sys_mutex_attribute_t> mutex_attr = {{ SYS_SYNC_PRIORITY, SYS_SYNC_NOT_RECURSIVE, SYS_SYNC_NOT_PROCESS_SHARED, SYS_SYNC_NOT_ADAPTIVE, 0, 0, 0, { "_dxpmtx"_u64 } }};
	const vm::var<sys_cond_attribute_t> cond_attr = {{ SYS_SYNC_NOT_PROCESS_SHARED, 0, 0, { "_dxpcnd"_u64 } }};

	if (sys_mutex_create(ppu, _this.ptr(&DmuxPamfContext::mutex), mutex_attr) != CELL_OK
		|| sys_cond_create(ppu, _this.ptr(&DmuxPamfContext::cond), _this->mutex, cond_attr) != CELL_OK)
	{
		return CELL_DMUX_PAMF_ERROR_FATAL;
	}

	_this->spurs_context_addr = _this.ptr(&DmuxPamfContext::spurs_context);
	_this->cmd_queue_addr_ = _this.ptr(&DmuxPamfContext::cmd_queue);
	_this->cmd_queue_buffer_addr_ = _this.ptr(&DmuxPamfContext::cmd_queue_buffer);
	_this->cmd_queue_addr = _this.ptr(&DmuxPamfContext::cmd_queue);
	_this->cmd_result_queue_addr = _this.ptr(&DmuxPamfContext::cmd_result_queue);
	_this->stream_info_queue_addr = _this.ptr(&DmuxPamfContext::stream_info_queue);
	_this->event_queue_addr = _this.ptr(&DmuxPamfContext::event_queue);
	_this->cmd_queue_buffer_addr = _this.ptr(&DmuxPamfContext::cmd_queue_buffer);
	_this->cmd_result_queue_buffer_addr = _this.ptr(&DmuxPamfContext::cmd_result_queue_buffer);
	_this->event_queue_buffer_addr = _this.ptr(&DmuxPamfContext::event_queue_buffer);
	_this->stream_info_queue_buffer_addr = _this.ptr(&DmuxPamfContext::stream_info_queue_buffer);
	_this->cmd_queue_addr__ = _this.ptr(&DmuxPamfContext::cmd_queue);

	ensure(std::snprintf(_this->spurs_taskset_name, sizeof(_this->spurs_taskset_name), "_libdmux_pamf_%08x", _this.addr()) == 22);

	_this->use_existing_spurs = !!res_spurs;

	if (!res_spurs && g_fxo->get<lv2_memory_container>().take(0x40000) != 0x40000)
	{
		return CELL_DMUX_PAMF_ERROR_FATAL;
	}

	_this->cmd_queue.init(_this->cmd_queue_buffer);
	_this->cmd_result_queue.init(_this->cmd_result_queue_buffer);
	_this->stream_info_queue.init(_this->stream_info_queue_buffer);
	_this->event_queue.init(_this->event_queue_buffer);

	// HLE exclusive
	_this->savestate = {};
	_this->au_queue_full_bitset = 0;
	_this->stream_reset_started = false;
	_this->stream_reset_in_progress = false;

	_this->run_spu_thread();

	handle = _this;
	return _this->create_thread(ppu);
}

error_code _CellDmuxCoreOpOpen(ppu_thread& ppu, vm::cptr<CellDmuxPamfSpecificInfo> pamfSpecificInfo, vm::cptr<CellDmuxResource> demuxerResource, vm::cptr<CellDmuxResourceSpurs> demuxerResourceSpurs, vm::cptr<DmuxCb<DmuxNotifyDemuxDone>> notifyDemuxDone,
	vm::cptr<DmuxCb<DmuxNotifyProgEndCode>> notifyProgEndCode, vm::cptr<DmuxCb<DmuxNotifyFatalErr>> notifyFatalErr, vm::pptr<CellDmuxPamfHandle> handle)
{
	// Block savestates during ppu_execute
	std::unique_lock savestate_lock{ g_fxo->get<hle_locks_t>(), std::try_to_lock };

	if (!savestate_lock.owns_lock())
	{
		ppu.state += cpu_flag::again;
		return {};
	}

	cellDmuxPamf.notice("_CellDmuxCoreOpOpen(pamfSpecificInfo=*0x%x, demuxerResource=*0x%x, demuxerResourceSpurs=*0x%x, notifyDemuxDone=*0x%x, notifyProgEndCode=*0x%x, notifyFatalErr=*0x%x, handle=**0x%x)",
		pamfSpecificInfo, demuxerResource, demuxerResourceSpurs, notifyDemuxDone, notifyProgEndCode, notifyFatalErr, handle);

	if ((pamfSpecificInfo && pamfSpecificInfo->thisSize != sizeof(CellDmuxPamfSpecificInfo))
		|| !demuxerResource
		|| (demuxerResourceSpurs && !demuxerResourceSpurs->spurs)
		|| !notifyDemuxDone || !notifyDemuxDone->cbFunc || !notifyDemuxDone->cbArg
		|| !notifyProgEndCode
		|| !notifyFatalErr || !notifyFatalErr->cbFunc || !notifyFatalErr->cbArg
		|| !handle)
	{
		return CELL_DMUX_PAMF_ERROR_ARG;
	}

	ensure(demuxerResource->memAddr.aligned(0x10)); // Not checked on LLE
	ensure(demuxerResource->memSize >= sizeof(CellDmuxPamfHandle)); // Not checked on LLE
	ensure(vm::check_addr(demuxerResource->memAddr.addr(), vm::page_readable | vm::page_writable, demuxerResource->memSize));

	const auto _handle = vm::static_ptr_cast<CellDmuxPamfHandle>(demuxerResource->memAddr);

	_handle->notify_demux_done = *notifyDemuxDone;
	_handle->notify_fatal_err = *notifyFatalErr;
	_handle->notify_prog_end_code = *notifyProgEndCode;

	if (!pamfSpecificInfo || !pamfSpecificInfo->programEndCodeCb)
	{
		_handle->notify_prog_end_code.cbFunc = vm::null;
	}

	const CellDmuxPamfResource res{ demuxerResource->ppuThreadPriority, demuxerResource->ppuThreadStackSize, demuxerResource->numOfSpus, demuxerResource->spuThreadPriority,
		vm::bptr<void>::make(demuxerResource->memAddr.addr() + sizeof(CellDmuxPamfHandle)), demuxerResource->memSize - sizeof(CellDmuxPamfHandle) };

	const auto demux_done_func = vm::bptr<DmuxNotifyDemuxDone>::make(g_fxo->get<ppu_function_manager>().func_addr(FIND_FUNC(dmuxPamfNotifyDemuxDone)));
	const auto prog_end_code_func = vm::bptr<DmuxNotifyProgEndCode>::make(g_fxo->get<ppu_function_manager>().func_addr(FIND_FUNC(dmuxPamfNotifyProgEndCode)));
	const auto fatal_err_func = vm::bptr<DmuxNotifyFatalErr>::make(g_fxo->get<ppu_function_manager>().func_addr(FIND_FUNC(dmuxPamfNotifyFatalErr)));

	const error_code ret = DmuxPamfContext::open(ppu, res, demuxerResourceSpurs, { demux_done_func, _handle }, { prog_end_code_func, _handle }, { fatal_err_func, _handle }, _handle->demuxer);

	*handle = _handle;

	return ret;
}

error_code DmuxPamfContext::close(ppu_thread& ppu)
{
	if (join_thread(ppu) != CELL_OK)
	{
		return CELL_DMUX_PAMF_ERROR_FATAL;
	}

	ensure(idm::remove<dmux_pamf_spu_thread>(hle_spu_thread_id));

	if (!use_existing_spurs)
	{
		g_fxo->get<lv2_memory_container>().free(0x40000);
	}

	if (sys_cond_destroy(ppu, cond) != CELL_OK
		|| sys_mutex_destroy(ppu, mutex) != CELL_OK)
	{
		return CELL_DMUX_PAMF_ERROR_FATAL;
	}

	return CELL_OK;
}

error_code _CellDmuxCoreOpClose(ppu_thread& ppu, vm::ptr<CellDmuxPamfHandle> handle)
{
	// The PPU thread is going to use ppu_execute
	std::unique_lock savestate_lock{ g_fxo->get<hle_locks_t>(), std::try_to_lock };

	if (!savestate_lock.owns_lock())
	{
		ppu.state += cpu_flag::again;
		return {};
	}

	cellDmuxPamf.notice("_CellDmuxCoreOpClose(handle=*0x%x)", handle);

	if (!handle)
	{
		return CELL_DMUX_PAMF_ERROR_ARG;
	}

	return handle->demuxer->close(ppu);
}

error_code DmuxPamfContext::reset_stream(ppu_thread& ppu)
{
	auto& ar = *ppu.optional_savestate_state;
	const u8 savestate = ar.try_read<u8>().second;
	ar.clear();

	switch (savestate)
	{
	case 0:
		if (lv2_syscall<sys_mutex_lock>(ppu, mutex, 0) != CELL_OK)
		{
			return CELL_DMUX_PAMF_ERROR_FATAL;
		}

		if (ppu.state & cpu_flag::again)
		{
			ar(0);
			return {};
		}

		if (sequence_state != DmuxPamfSequenceState::running)
		{
			return sys_mutex_unlock(ppu, mutex) == CELL_OK ? static_cast<error_code>(CELL_OK) : CELL_DMUX_PAMF_ERROR_FATAL;
		}

		[[fallthrough]];

	case 1:
		send_spu_command_and_wait<DmuxPamfCommandType::reset_stream>(ppu, savestate);

		if (ppu.state & cpu_flag::again)
		{
			ar(1);
			return {};
		}

		stream_reset_requested = true;
		[[fallthrough]];

	case 2:
		if (const error_code ret = lv2_syscall<sys_cond_signal_to>(ppu, cond, static_cast<u32>(thread_id)); ret != CELL_OK && ret != static_cast<s32>(CELL_EPERM))
		{
			sys_mutex_unlock(ppu, mutex);
			return CELL_DMUX_PAMF_ERROR_FATAL;
		}

		if (ppu.state & cpu_flag::again)
		{
			ar(2);
			return {};
		}

		return sys_mutex_unlock(ppu, mutex) == CELL_OK ? static_cast<error_code>(CELL_OK) : CELL_DMUX_PAMF_ERROR_FATAL;

	default:
		fmt::throw_exception("Unexpected savestate value: 0x%x", savestate);
	}
}

error_code _CellDmuxCoreOpResetStream(ppu_thread& ppu, vm::ptr<CellDmuxPamfHandle> handle)
{
	cellDmuxPamf.notice("_CellDmuxCoreOpResetStream(handle=*0x%x)", handle);

	if (!handle)
	{
		return CELL_DMUX_PAMF_ERROR_ARG;
	}

	return handle->demuxer->reset_stream(ppu);
}

error_code DmuxPamfContext::create_thread(ppu_thread& ppu)
{
	const vm::var<char[]> name = vm::make_str("HLE PAMF demuxer");
	const auto entry = g_fxo->get<ppu_function_manager>().func_addr(FIND_FUNC(dmuxPamfEntry));

	if (ppu_execute<&sys_ppu_thread_create>(ppu, _this.ptr(&DmuxPamfContext::thread_id), entry, +_this.addr(), +resource.ppuThreadPriority, +resource.ppuThreadStackSize, SYS_PPU_THREAD_CREATE_JOINABLE, +name) != CELL_OK)
	{
		return CELL_DMUX_PAMF_ERROR_FATAL;
	}

	return CELL_OK;
}

error_code _CellDmuxCoreOpCreateThread(ppu_thread& ppu, vm::ptr<CellDmuxPamfHandle> handle)
{
	// Block savestates during ppu_execute
	std::unique_lock savestate_lock{ g_fxo->get<hle_locks_t>(), std::try_to_lock };

	if (!savestate_lock.owns_lock())
	{
		ppu.state += cpu_flag::again;
		return {};
	}

	cellDmuxPamf.notice("_CellDmuxCoreOpCreateThread(handle=*0x%x)", handle);

	if (!handle)
	{
		return CELL_DMUX_PAMF_ERROR_ARG;
	}

	return handle->demuxer->create_thread(ppu);
}

error_code DmuxPamfContext::join_thread(ppu_thread& ppu)
{
	if (lv2_syscall<sys_mutex_lock>(ppu, mutex, 0) != CELL_OK)
	{
		return CELL_DMUX_PAMF_ERROR_FATAL;
	}

	std::ranges::fill_n(elementary_streams, enabled_es_num, vm::null);

	enabled_es_num = -1;

	send_spu_command_and_wait<DmuxPamfCommandType::close>(ppu, false);

	if (sys_mutex_unlock(ppu, mutex) != CELL_OK)
	{
		return CELL_DMUX_PAMF_ERROR_FATAL;
	}

	return lv2_syscall<sys_ppu_thread_join>(ppu, static_cast<u32>(thread_id), +vm::var<u64>{}) == CELL_OK ? static_cast<error_code>(CELL_OK) : CELL_DMUX_PAMF_ERROR_FATAL;
}

error_code _CellDmuxCoreOpJoinThread(ppu_thread& ppu, vm::ptr<CellDmuxPamfHandle> handle)
{
	// The PPU thread is going to use ppu_execute
	std::unique_lock savestate_lock{ g_fxo->get<hle_locks_t>(), std::try_to_lock };

	if (!savestate_lock.owns_lock())
	{
		ppu.state += cpu_flag::again;
		return {};
	}

	cellDmuxPamf.notice("_CellDmuxCoreOpJoinThread(handle=*0x%x)", handle);

	if (!handle)
	{
		return CELL_DMUX_PAMF_ERROR_ARG;
	}

	return handle->demuxer->join_thread(ppu);
}

template <bool raw_es>
error_code DmuxPamfContext::set_stream(ppu_thread& ppu, vm::cptr<u8> stream_address, u32 stream_size, b8 discontinuity, u32 user_data)
{
	auto& ar = *ppu.optional_savestate_state;
	const bool waiting_for_spu_state = ar.try_read<bool>().second;
	ar.clear();

	if (!waiting_for_spu_state)
	{
		if (lv2_syscall<sys_mutex_lock>(ppu, mutex, 0) != CELL_OK)
		{
			return CELL_DMUX_PAMF_ERROR_FATAL;
		}

		if (ppu.state & cpu_flag::again)
		{
			ar(false);
			return {};
		}

		this->user_data = user_data;

		if (!stream_info_queue.emplace(stream_address, stream_size, user_data, !discontinuity, raw_es))
		{
			return sys_mutex_unlock(ppu, mutex) == CELL_OK ? CELL_DMUX_PAMF_ERROR_BUSY : CELL_DMUX_PAMF_ERROR_FATAL;
		}
	}

	send_spu_command_and_wait<DmuxPamfCommandType::set_stream>(ppu, waiting_for_spu_state);

	if (ppu.state & cpu_flag::again)
	{
		ar(true);
		return {};
	}

	sequence_state = DmuxPamfSequenceState::running;

	return sys_mutex_unlock(ppu, mutex) == CELL_OK ? static_cast<error_code>(CELL_OK) : CELL_DMUX_PAMF_ERROR_FATAL;
}

template <bool raw_es>
error_code _CellDmuxCoreOpSetStream(ppu_thread& ppu, vm::ptr<CellDmuxPamfHandle> handle, vm::cptr<u8> streamAddress, u32 streamSize, b8 discontinuity, u64 userData)
{
	cellDmuxPamf.trace("_CellDmuxCoreOpSetStream<raw_es=%d>(handle=*0x%x, streamAddress=*0x%x, streamSize=0x%x, discontinuity=%d, userData=0x%llx)", raw_es, handle, streamAddress, streamSize, +discontinuity, userData);

	if (!streamAddress || streamSize == 0)
	{
		return CELL_DMUX_PAMF_ERROR_ARG;
	}

	ensure(!!handle); // Not checked on LLE

	return handle->demuxer->set_stream<raw_es>(ppu, streamAddress, streamSize, discontinuity, static_cast<u32>(userData));
}

error_code DmuxPamfElementaryStream::release_au(ppu_thread& ppu, vm::ptr<u8> au_addr, u32 au_size) const
{
	auto& ar = *ppu.optional_savestate_state;
	const u8 savestate = ar.try_read<u8>().second;
	ar.clear();

	switch (savestate)
	{
	case 0:
		if (lv2_syscall<sys_mutex_lock>(ppu, demuxer->mutex, 0) != CELL_OK)
		{
			return CELL_DMUX_PAMF_ERROR_FATAL;
		}

		if (ppu.state & cpu_flag::again)
		{
			ar(0);
			return {};
		}

		[[fallthrough]];

	case 1:
		demuxer->send_spu_command_and_wait<DmuxPamfCommandType::release_au>(ppu, savestate, au_addr, au_size, static_cast<be_t<u32>>(stream_id), static_cast<be_t<u32>>(private_stream_id));

		if (ppu.state & cpu_flag::again)
		{
			ar(1);
			return {};
		}

		demuxer->au_released_bitset |= 1ull << this_index;
		[[fallthrough]];

	case 2:
		if (const error_code ret = lv2_syscall<sys_cond_signal_to>(ppu, demuxer->cond, static_cast<u32>(demuxer->thread_id)); ret != CELL_OK && ret != static_cast<s32>(CELL_EPERM))
		{
			sys_mutex_unlock(ppu, demuxer->mutex);
			return CELL_DMUX_PAMF_ERROR_FATAL;
		}

		if (ppu.state & cpu_flag::again)
		{
			ar(2);
			return {};
		}

		return sys_mutex_unlock(ppu, demuxer->mutex) == CELL_OK ? static_cast<error_code>(CELL_OK) : CELL_DMUX_PAMF_ERROR_FATAL;

	default:
		fmt::throw_exception("Unexpected savestate value: 0x%x", savestate);
	}
}

error_code _CellDmuxCoreOpReleaseAu(ppu_thread& ppu, vm::ptr<CellDmuxPamfEsHandle> esHandle, vm::ptr<u8> auAddr, u32 auSize)
{
	cellDmuxPamf.trace("_CellDmuxCoreOpReleaseAu(esHandle=*0x%x, auAddr=*0x%x, auSize=0x%x)", esHandle, auAddr, auSize);

	if (!auAddr || auSize == 0)
	{
		return CELL_DMUX_PAMF_ERROR_ARG;
	}

	ensure(!!esHandle); // Not checked on LLE

	return esHandle->es->release_au(ppu, auAddr, auSize);
}

template <bool raw_es>
error_code dmuxPamfGetEsAttr(u16 stream_id, u16 private_stream_id, bool is_avc, vm::cptr<void> es_specific_info, CellDmuxPamfEsAttr& attr)
{
	if (dmuxPamfStreamIdToTypeChannel(stream_id, private_stream_id).first == DMUX_PAMF_STREAM_TYPE_INDEX_INVALID)
	{
		return CELL_DMUX_PAMF_ERROR_UNKNOWN_STREAM;
	}

	if (dmuxPamfVerifyEsSpecificInfo(stream_id, private_stream_id, is_avc, es_specific_info) != CELL_OK)
	{
		return CELL_DMUX_PAMF_ERROR_ARG;
	}

	attr.auQueueMaxSize = dmuxPamfGetAuQueueMaxSize(stream_id, private_stream_id);
	attr.memSize = dmuxPamfGetEsMemSize<raw_es>(stream_id, private_stream_id, is_avc, es_specific_info);
	attr.specificInfoSize = dmuxPamfGetAuSpecificInfoSize<raw_es>(stream_id, private_stream_id, is_avc);

	return CELL_OK;
}

template <bool raw_es>
static inline std::tuple<u16, u16, bool> get_stream_ids(vm::cptr<void> esFilterId)
{
	if constexpr (raw_es)
	{
		const auto filter_id = vm::static_ptr_cast<const u8>(esFilterId);
		return { filter_id[2], filter_id[3], filter_id[8] >> 7 };
	}

	const auto filter_id = vm::static_ptr_cast<const CellCodecEsFilterId>(esFilterId);
	return { filter_id->filterIdMajor, filter_id->filterIdMinor, filter_id->supplementalInfo1 };
}

template <bool raw_es>
error_code _CellDmuxCoreOpQueryEsAttr(vm::cptr<void> esFilterId, vm::cptr<void> esSpecificInfo, vm::ptr<CellDmuxPamfEsAttr> attr)
{
	cellDmuxPamf.notice("_CellDmuxCoreOpQueryEsAttr<raw_es=%d>(esFilterId=*0x%x, esSpecificInfo=*0x%x, attr=*0x%x)", raw_es, esFilterId, esSpecificInfo, attr);

	if (!esFilterId || !attr)
	{
		return CELL_DMUX_PAMF_ERROR_ARG;
	}

	const auto [stream_id, private_stream_id, is_avc] = get_stream_ids<raw_es>(esFilterId);

	CellDmuxPamfEsAttr es_attr;

	const error_code ret = dmuxPamfGetEsAttr<raw_es>(stream_id, private_stream_id, is_avc, esSpecificInfo, es_attr);

	*attr = es_attr;
	attr->memSize += static_cast<u32>(sizeof(CellDmuxPamfEsHandle));

	return ret;
}

template <bool raw_es>
error_code DmuxPamfContext::enable_es(ppu_thread& ppu, u16 stream_id, u16 private_stream_id, bool is_avc, vm::cptr<void> es_specific_info, vm::ptr<void> mem_addr, u32 mem_size, const DmuxCb<DmuxEsNotifyAuFound>& notify_au_found,
	const DmuxCb<DmuxEsNotifyFlushDone>& notify_flush_done, vm::bptr<DmuxPamfElementaryStream>& es)
{
	auto& ar = *ppu.optional_savestate_state;
	const bool waiting_for_spu_state = ar.try_read<bool>().second;
	ar.clear();

	if (mem_size < dmuxPamfGetEsMemSize<raw_es>(stream_id, private_stream_id, is_avc, es_specific_info))
	{
		return CELL_DMUX_PAMF_ERROR_ARG;
	}

	const auto stream_type = dmuxPamfStreamIdToTypeChannel(stream_id, private_stream_id).first;

	if (!waiting_for_spu_state)
	{
		if (stream_type == DMUX_PAMF_STREAM_TYPE_INDEX_INVALID)
		{
			return CELL_DMUX_PAMF_ERROR_UNKNOWN_STREAM;
		}

		if (dmuxPamfVerifyEsSpecificInfo(stream_id, private_stream_id, is_avc, es_specific_info) != CELL_OK)
		{
			return CELL_DMUX_PAMF_ERROR_ARG;
		}

		if (const error_code ret = lv2_syscall<sys_mutex_lock>(ppu, mutex, 0); ret != CELL_OK)
		{
			return CELL_DMUX_PAMF_ERROR_FATAL;
		}

		if (ppu.state & cpu_flag::again)
		{
			ar(false);
			return {};
		}

		this->is_raw_es = raw_es;

		if (enabled_es_num == max_enabled_es_num)
		{
			return sys_mutex_unlock(ppu, mutex) == CELL_OK ? CELL_DMUX_PAMF_ERROR_NO_MEMORY : CELL_DMUX_PAMF_ERROR_FATAL;
		}

		if (find_es(stream_id, private_stream_id))
		{
			// Elementary stream is already enabled
			return sys_mutex_unlock(ppu, mutex) == CELL_OK ? CELL_DMUX_PAMF_ERROR_ARG : CELL_DMUX_PAMF_ERROR_FATAL;
		}
	}

	const be_t<u32> au_max_size = [&]() -> be_t<u32>
	{
		switch (stream_type)
		{
		case DMUX_PAMF_STREAM_TYPE_INDEX_VIDEO:
			if (is_avc)
			{
				if (!es_specific_info || vm::static_ptr_cast<const CellDmuxPamfEsSpecificInfoAvc>(es_specific_info)->level == CELL_DMUX_PAMF_AVC_LEVEL_4P2)
				{
					return 0xcc000u;
				}

				switch (vm::static_ptr_cast<const CellDmuxPamfEsSpecificInfoAvc>(es_specific_info)->level)
				{
				case CELL_DMUX_PAMF_AVC_LEVEL_2P1: return 0x12900u;
				case CELL_DMUX_PAMF_AVC_LEVEL_3P0: return 0x25f80u;
				case CELL_DMUX_PAMF_AVC_LEVEL_3P1: return 0x54600u;
				case CELL_DMUX_PAMF_AVC_LEVEL_3P2: return 0x78000u;
				case CELL_DMUX_PAMF_AVC_LEVEL_4P1: return 0xc0000u;
				default: fmt::throw_exception("Unreachable"); // es_specific_info was already checked for invalid values in dmuxPamfVerifyEsSpecificInfo()
				}
			}

			if (!es_specific_info || vm::static_ptr_cast<const CellDmuxPamfEsSpecificInfoM2v>(es_specific_info)->profileLevel > CELL_DMUX_PAMF_M2V_MP_ML)
			{
				return 0x12a800u;
			}

			return 0x38000u;

		case DMUX_PAMF_STREAM_TYPE_INDEX_LPCM:      return dmuxPamfGetLpcmAuSize(vm::static_ptr_cast<const CellDmuxPamfEsSpecificInfoLpcm>(es_specific_info));
		case DMUX_PAMF_STREAM_TYPE_INDEX_AC3:       return 0xf00u;
		case DMUX_PAMF_STREAM_TYPE_INDEX_ATRACX:    return 0x1008u;
		case DMUX_PAMF_STREAM_TYPE_INDEX_USER_DATA: return 0xa0000u;
		default: fmt::throw_exception("Unreachable"); // stream_type was already checked
		}
	}();

	const auto _es = vm::bptr<DmuxPamfElementaryStream>::make(utils::align(mem_addr.addr(), 0x10));

	const auto au_queue_buffer = vm::bptr<u8>::make(utils::align(_es.addr() + static_cast<u32>(sizeof(DmuxPamfElementaryStream)), 0x80));
	const be_t<u32> au_specific_info_size = dmuxPamfGetAuSpecificInfoSize<raw_es>(stream_id, private_stream_id, is_avc);

	send_spu_command_and_wait<DmuxPamfCommandType::enable_es>(ppu, waiting_for_spu_state, stream_id, private_stream_id, is_avc, au_queue_buffer,
		dmuxPamfGetAuQueueBufferSize(stream_id, private_stream_id, is_avc, es_specific_info), au_max_size, au_specific_info_size, raw_es, next_es_id);

	if (ppu.state & cpu_flag::again)
	{
		ar(true);
		return {};
	}

	u32 es_idx = umax;
	while (elementary_streams[++es_idx]){} // There is guaranteed to be an empty slot, this was already checked above

	_es->_this = _es;
	_es->this_size = mem_size;
	_es->this_index = es_idx;
	_es->demuxer = _this;
	_es->notify_au_found = notify_au_found;
	_es->notify_flush_done = notify_flush_done;
	_es->stream_id = stream_id;
	_es->private_stream_id = private_stream_id;
	_es->is_avc = is_avc;
	_es->au_queue_buffer = au_queue_buffer;
	_es->au_max_size = au_max_size;
	_es->au_specific_info_size = au_specific_info_size;
	_es->reset_next_au = false;
	_es->es_id = next_es_id++;

	elementary_streams[es_idx] = _es;

	enabled_es_num++;

	if (sys_mutex_unlock(ppu, mutex) != CELL_OK)
	{
		return CELL_DMUX_PAMF_ERROR_FATAL;
	}

	es = _es;
	return CELL_OK;
}

template <bool raw_es>
error_code _CellDmuxCoreOpEnableEs(ppu_thread& ppu, vm::ptr<CellDmuxPamfHandle> handle, vm::cptr<void> esFilterId, vm::cptr<CellDmuxEsResource> esResource, vm::cptr<DmuxCb<DmuxEsNotifyAuFound>> notifyAuFound,
	vm::cptr<DmuxCb<DmuxEsNotifyFlushDone>> notifyFlushDone, vm::cptr<void> esSpecificInfo, vm::pptr<CellDmuxPamfEsHandle> esHandle)
{
	cellDmuxPamf.notice("_CellDmuxCoreOpEnableEs<raw_es=%d>(handle=*0x%x, esFilterId=*0x%x, esResource=*0x%x, notifyAuFound=*0x%x, notifyFlushDone=*0x%x, esSpecificInfo=*0x%x, esHandle)",
		raw_es, handle, esFilterId, esResource, notifyAuFound, notifyFlushDone, esSpecificInfo, esHandle);

	if (!handle || !esFilterId || !esResource || !esResource->memAddr || esResource->memSize == 0u || !notifyAuFound || !notifyAuFound->cbFunc || !notifyAuFound->cbArg || !notifyFlushDone || !notifyFlushDone->cbFunc || !notifyFlushDone->cbArg)
	{
		return CELL_DMUX_PAMF_ERROR_ARG;
	}

	ensure(!!esHandle && esResource->memAddr.aligned(0x10)); // Not checked on LLE
	ensure(esResource->memSize >= sizeof(CellDmuxPamfEsHandle)); // Not checked on LLE
	ensure(vm::check_addr(esResource->memAddr.addr(), vm::page_readable | vm::page_writable, esResource->memSize));

	const auto es_handle = vm::static_ptr_cast<CellDmuxPamfEsHandle>(esResource->memAddr);

	es_handle->notify_au_found = *notifyAuFound;
	es_handle->notify_flush_done = *notifyFlushDone;

	const auto au_found_func = vm::bptr<DmuxEsNotifyAuFound>::make(g_fxo->get<ppu_function_manager>().func_addr(FIND_FUNC(dmuxPamfEsNotifyAuFound)));
	const auto flush_done_func = vm::bptr<DmuxEsNotifyFlushDone>::make(g_fxo->get<ppu_function_manager>().func_addr(FIND_FUNC(dmuxPamfEsNotifyFlushDone)));

	const auto [stream_id, private_stream_id, is_avc] = get_stream_ids<raw_es>(esFilterId);

	const error_code ret = handle->demuxer->enable_es<raw_es>(ppu, stream_id, private_stream_id, is_avc, esSpecificInfo, vm::ptr<void>::make(esResource->memAddr.addr() + sizeof(CellDmuxPamfEsHandle)),
		esResource->memSize - sizeof(CellDmuxPamfEsHandle), { au_found_func, es_handle }, { flush_done_func, es_handle }, es_handle->es);

	*esHandle = es_handle;

	return ret;
}

error_code DmuxPamfElementaryStream::disable_es(ppu_thread& ppu)
{
	const auto dmux = demuxer.get_ptr();

	auto& ar = *ppu.optional_savestate_state;
	const u8 savestate = ar.try_read<u8>().second;
	ar.clear();

	switch (savestate)
	{
	case 0:
		if (lv2_syscall<sys_mutex_lock>(ppu, dmux->mutex, 0) != CELL_OK)
		{
			return CELL_DMUX_PAMF_ERROR_FATAL;
		}

		if (ppu.state & cpu_flag::again)
		{
			ar(0);
			return {};
		}

		if (!dmux->find_es(stream_id, private_stream_id))
		{
			// Elementary stream is already disabled
			return sys_mutex_unlock(ppu, dmux->mutex) == CELL_OK ? CELL_DMUX_PAMF_ERROR_ARG : CELL_DMUX_PAMF_ERROR_FATAL;
		}

		[[fallthrough]];

	case 1:
		dmux->send_spu_command_and_wait<DmuxPamfCommandType::disable_es>(ppu, savestate, static_cast<be_t<u32>>(stream_id), static_cast<be_t<u32>>(private_stream_id));

		if (ppu.state & cpu_flag::again)
		{
			ar(1);
			return {};
		}

		_this = vm::null;
		this_size = 0;
		demuxer = vm::null;
		notify_au_found = {};
		au_queue_buffer = vm::null;
		unk = 0;
		au_max_size = 0;

		dmux->elementary_streams[this_index] = vm::null;
		dmux->enabled_es_num--;

		dmux->au_released_bitset |= 1ull << this_index;

		this_index = 0;
		[[fallthrough]];

	case 2:
		if (const error_code ret = lv2_syscall<sys_cond_signal_to>(ppu, dmux->cond, static_cast<u32>(dmux->thread_id)); ret != CELL_OK && ret != static_cast<s32>(CELL_EPERM))
		{
			sys_mutex_unlock(ppu, dmux->mutex);
			return CELL_DMUX_PAMF_ERROR_FATAL;
		}

		if (ppu.state & cpu_flag::again)
		{
			ar(2);
			return {};
		}

		return sys_mutex_unlock(ppu, dmux->mutex) == CELL_OK ? static_cast<error_code>(CELL_OK) : CELL_DMUX_PAMF_ERROR_FATAL;

	default:
		fmt::throw_exception("Unexpected savestate value: 0x%x", savestate);
	}
}

error_code _CellDmuxCoreOpDisableEs(ppu_thread& ppu, vm::ptr<CellDmuxPamfEsHandle> esHandle)
{
	cellDmuxPamf.notice("_CellDmuxCoreOpDisableEs(esHandle=*0x%x)", esHandle);

	if (!esHandle)
	{
		return CELL_DMUX_PAMF_ERROR_ARG;
	}

	return esHandle->es->disable_es(ppu);
}

error_code DmuxPamfElementaryStream::flush_es(ppu_thread& ppu) const
{
	auto& ar = *ppu.optional_savestate_state;
	const bool waiting_for_spu_state = ar.try_read<bool>().second;
	ar.clear();

	if (!waiting_for_spu_state)
	{
		if (lv2_syscall<sys_mutex_lock>(ppu, demuxer->mutex, 0) != CELL_OK)
		{
			return CELL_DMUX_PAMF_ERROR_FATAL;
		}

		if (ppu.state & cpu_flag::again)
		{
			ar(false);
			return {};
		}
	}

	demuxer->send_spu_command_and_wait<DmuxPamfCommandType::flush_es>(ppu, waiting_for_spu_state, static_cast<be_t<u32>>(stream_id), static_cast<be_t<u32>>(private_stream_id));

	if (ppu.state & cpu_flag::again)
	{
		ar(true);
		return {};
	}

	return sys_mutex_unlock(ppu, demuxer->mutex) == CELL_OK ? static_cast<error_code>(CELL_OK) : CELL_DMUX_PAMF_ERROR_FATAL;
}

error_code _CellDmuxCoreOpFlushEs(ppu_thread& ppu, vm::ptr<CellDmuxPamfEsHandle> esHandle)
{
	cellDmuxPamf.notice("_CellDmuxCoreOpFlushEs(esHandle=*0x%x)", esHandle);

	if (!esHandle)
	{
		return CELL_DMUX_PAMF_ERROR_ARG;
	}

	return esHandle->es->flush_es(ppu);
}

error_code DmuxPamfElementaryStream::reset_es(ppu_thread& ppu) const
{
	auto& ar = *ppu.optional_savestate_state;
	const bool waiting_for_spu_state = ar.try_read<bool>().second;
	ar.clear();

	if (!waiting_for_spu_state)
	{
		if (lv2_syscall<sys_mutex_lock>(ppu, demuxer->mutex, 0) != CELL_OK)
		{
			return CELL_DMUX_PAMF_ERROR_FATAL;
		}

		if (ppu.state & cpu_flag::again)
		{
			ar(false);
			return {};
		}
	}

	demuxer->send_spu_command_and_wait<DmuxPamfCommandType::reset_es>(ppu, waiting_for_spu_state, static_cast<be_t<u32>>(stream_id), static_cast<be_t<u32>>(private_stream_id), vm::null);

	if (ppu.state & cpu_flag::again)
	{
		ar(true);
		return {};
	}

	return sys_mutex_unlock(ppu, demuxer->mutex) == CELL_OK ? static_cast<error_code>(CELL_OK) : CELL_DMUX_PAMF_ERROR_FATAL;
}

error_code _CellDmuxCoreOpResetEs(ppu_thread& ppu, vm::ptr<CellDmuxPamfEsHandle> esHandle)
{
	cellDmuxPamf.notice("_CellDmuxCoreOpResetEs(esHandle=*0x%x)", esHandle);

	if (!esHandle)
	{
		return CELL_DMUX_PAMF_ERROR_ARG;
	}

	return esHandle->es->reset_es(ppu);
}

error_code DmuxPamfContext::reset_stream_and_wait_done(ppu_thread& ppu)
{
	// Both sys_cond_wait() and DmuxPamfContext::reset_stream() are already using ppu_thread::optional_savestate_state, so we can't save this function currently
	std::unique_lock savestate_lock{ g_fxo->get<hle_locks_t>(), std::try_to_lock };

	if (!savestate_lock.owns_lock())
	{
		ppu.state += cpu_flag::again;
		return {};
	}

	if (reset_stream(ppu) != CELL_OK)
	{
		return CELL_DMUX_PAMF_ERROR_FATAL;
	}

	if (ppu.state & cpu_flag::again)
	{
		return {};
	}

	if (lv2_syscall<sys_mutex_lock>(ppu, mutex, 0) != CELL_OK)
	{
		return CELL_DMUX_PAMF_ERROR_FATAL;
	}

	if (ppu.state & cpu_flag::again)
	{
		return {};
	}

	while (sequence_state != DmuxPamfSequenceState::dormant)
	{
		if (lv2_syscall<sys_cond_wait>(ppu, cond, 0) != CELL_OK)
		{
			sys_mutex_unlock(ppu, mutex);
			return CELL_DMUX_PAMF_ERROR_FATAL;
		}

		if (ppu.state & cpu_flag::again)
		{
			return {};
		}
	}

	return sys_mutex_unlock(ppu, mutex) == CELL_OK ? static_cast<error_code>(CELL_OK) : CELL_DMUX_PAMF_ERROR_FATAL;
}

error_code _CellDmuxCoreOpResetStreamAndWaitDone(ppu_thread& ppu, vm::ptr<CellDmuxPamfHandle> handle)
{
	cellDmuxPamf.notice("_CellDmuxCoreOpResetStreamAndWaitDone(handle=*0x%x)", handle);

	if (!handle)
	{
		return CELL_DMUX_PAMF_ERROR_ARG;
	}

	return handle->demuxer->reset_stream_and_wait_done(ppu);
}

template <bool raw_es>
static void init_gvar(const vm::gvar<CellDmuxCoreOps>& var)
{
	var->queryAttr.set(g_fxo->get<ppu_function_manager>().func_addr(FIND_FUNC(_CellDmuxCoreOpQueryAttr)));
	var->open.set(g_fxo->get<ppu_function_manager>().func_addr(FIND_FUNC(_CellDmuxCoreOpOpen)));
	var->close.set(g_fxo->get<ppu_function_manager>().func_addr(FIND_FUNC(_CellDmuxCoreOpClose)));
	var->resetStream.set(g_fxo->get<ppu_function_manager>().func_addr(FIND_FUNC(_CellDmuxCoreOpResetStream)));
	var->createThread.set(g_fxo->get<ppu_function_manager>().func_addr(FIND_FUNC(_CellDmuxCoreOpCreateThread)));
	var->joinThread.set(g_fxo->get<ppu_function_manager>().func_addr(FIND_FUNC(_CellDmuxCoreOpJoinThread)));
	var->setStream.set(g_fxo->get<ppu_function_manager>().func_addr(FIND_FUNC(_CellDmuxCoreOpSetStream<raw_es>)));
	var->releaseAu.set(g_fxo->get<ppu_function_manager>().func_addr(FIND_FUNC(_CellDmuxCoreOpReleaseAu)));
	var->queryEsAttr.set(g_fxo->get<ppu_function_manager>().func_addr(FIND_FUNC(_CellDmuxCoreOpQueryEsAttr<raw_es>)));
	var->enableEs.set(g_fxo->get<ppu_function_manager>().func_addr(FIND_FUNC(_CellDmuxCoreOpEnableEs<raw_es>)));
	var->disableEs.set(g_fxo->get<ppu_function_manager>().func_addr(FIND_FUNC(_CellDmuxCoreOpDisableEs)));
	var->flushEs.set(g_fxo->get<ppu_function_manager>().func_addr(FIND_FUNC(_CellDmuxCoreOpFlushEs)));
	var->resetEs.set(g_fxo->get<ppu_function_manager>().func_addr(FIND_FUNC(_CellDmuxCoreOpResetEs)));
	var->resetStreamAndWaitDone.set(g_fxo->get<ppu_function_manager>().func_addr(FIND_FUNC(_CellDmuxCoreOpResetStreamAndWaitDone)));
}

DECLARE(ppu_module_manager::cellDmuxPamf)("cellDmuxPamf", []
{
	REG_VNID(cellDmuxPamf, 0x28b2b7b2, g_cell_dmux_core_ops_pamf).init = []{ init_gvar<false>(g_cell_dmux_core_ops_pamf); };
	REG_VNID(cellDmuxPamf, 0x9728a0e9, g_cell_dmux_core_ops_raw_es).init = []{ init_gvar<true>(g_cell_dmux_core_ops_raw_es); };

	REG_HIDDEN_FUNC(_CellDmuxCoreOpQueryAttr);
	REG_HIDDEN_FUNC(_CellDmuxCoreOpOpen);
	REG_HIDDEN_FUNC(_CellDmuxCoreOpClose);
	REG_HIDDEN_FUNC(_CellDmuxCoreOpResetStream);
	REG_HIDDEN_FUNC(_CellDmuxCoreOpCreateThread);
	REG_HIDDEN_FUNC(_CellDmuxCoreOpJoinThread);
	REG_HIDDEN_FUNC(_CellDmuxCoreOpSetStream<false>);
	REG_HIDDEN_FUNC(_CellDmuxCoreOpSetStream<true>);
	REG_HIDDEN_FUNC(_CellDmuxCoreOpReleaseAu);
	REG_HIDDEN_FUNC(_CellDmuxCoreOpQueryEsAttr<false>);
	REG_HIDDEN_FUNC(_CellDmuxCoreOpQueryEsAttr<true>);
	REG_HIDDEN_FUNC(_CellDmuxCoreOpEnableEs<false>);
	REG_HIDDEN_FUNC(_CellDmuxCoreOpEnableEs<true>);
	REG_HIDDEN_FUNC(_CellDmuxCoreOpDisableEs);
	REG_HIDDEN_FUNC(_CellDmuxCoreOpFlushEs);
	REG_HIDDEN_FUNC(_CellDmuxCoreOpResetEs);
	REG_HIDDEN_FUNC(_CellDmuxCoreOpResetStreamAndWaitDone);

	REG_HIDDEN_FUNC(dmuxPamfNotifyDemuxDone);
	REG_HIDDEN_FUNC(dmuxPamfNotifyProgEndCode);
	REG_HIDDEN_FUNC(dmuxPamfNotifyFatalErr);
	REG_HIDDEN_FUNC(dmuxPamfEsNotifyAuFound);
	REG_HIDDEN_FUNC(dmuxPamfEsNotifyFlushDone);

	REG_HIDDEN_FUNC(dmuxPamfEntry);
});
