--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/foosdk/sdk/foobar2000/helpers/input_helpers.cpp	Mon Jan 05 02:15:46 2026 -0500
@@ -0,0 +1,660 @@
+#include "StdAfx.h"
+
+#include "input_helpers.h"
+#include "fullFileBuffer.h"
+#include "file_list_helper.h"
+#include "fileReadAhead.h"
+#include <SDK/file_info_impl.h>
+#include "readers_lite.h"
+
+#define LOCAL_DEBUG_PRINT(...) // PFC_DEBUG_PRINT(__VA_ARGS__)
+
+#define FILE_DECODEDAUDIO_PRINT(...) LOCAL_DEBUG_PRINT("file_decodeaudio(", pfc::format_ptr(this), "): ", __VA_ARGS__)
+
+input_helper::ioFilter_t input_helper::ioFilter_full_buffer(t_filesize val) {
+	if (val == 0) return nullptr;
+    return [val] ( file_ptr & f, const char * path, abort_callback & aborter) {
+        if (!filesystem::g_is_remote_or_unrecognized(path)) {
+			if (f.is_empty()) filesystem::g_open_read(f, path, aborter);
+			if (!f->is_in_memory() && !f->is_remote() && f->can_seek() && f->get_size(aborter) <= val) {
+				try {
+					f = createFileMemMirrorAsync(f, nullptr, aborter);
+					return true;
+				} catch (std::bad_alloc const &) {} // keep orig file object
+			}
+        }
+        return false;
+    };
+}
+
+input_helper::ioFilter_t input_helper::ioFilter_block_buffer(size_t arg) {
+	if (arg == 0) return nullptr;
+
+	return [arg](file_ptr & p_file, const char * p_path, abort_callback & p_abort) {
+		if (!filesystem::g_is_remote_or_unrecognized(p_path)) {
+			if (p_file.is_empty()) filesystem::g_open_read(p_file, p_path, p_abort);
+			if (!p_file->is_in_memory() && !p_file->is_remote() && p_file->can_seek()) {
+				file_cached::g_create(p_file, p_file, p_abort, (size_t)arg);
+				return true;
+			}
+		}
+		return false;
+	};
+}
+
+static bool looksLikePlaylist(filesystem::ptr const& fs, const char* path) {
+	auto ext = fs->get_extension(path);
+	// match against common internet playlist extensions
+	// yes, this could query fb2k services instead, but uses a fixed list by design
+	for (auto walk : { "m3u", "pls", "m3u8", "asx" }) {
+		if (pfc::stringEqualsI_ascii(walk, ext)) return true;
+	}
+	return false;
+}
+static input_helper::ioFilter_t makeReadAhead(size_t arg, bool bRemote) {
+	if (arg == 0) return nullptr;
+
+	return [arg, bRemote](file_ptr & p_file, const char * p_path, abort_callback & p_abort) {
+		if (p_file.is_empty()) {
+			filesystem::ptr fs;
+			if (!filesystem::g_get_interface(fs, p_path)) return false;
+			if (bRemote != fs->is_remote(p_path)) return false;
+			if (looksLikePlaylist(fs, p_path)) return false;
+			fs->open(p_file, p_path, filesystem::open_mode_read, p_abort);
+		} else if (bRemote != p_file->is_remote()) return false;
+		if (p_file->is_in_memory()) return false;
+		p_file = fileCreateReadAhead(p_file, (size_t)arg, p_abort);
+		return true;
+	};
+}
+
+input_helper::ioFilter_t input_helper::ioFilter_remote_read_ahead(size_t arg) {
+	return makeReadAhead(arg, true);
+}
+
+input_helper::ioFilter_t input_helper::ioFilter_local_read_ahead(size_t arg) {
+	return makeReadAhead(arg, false);
+}
+
+void input_helper::open(trackRef location, abort_callback & abort, decodeOpen_t const & other) {
+    this->open( trackGetLocation(location), abort, other);
+}
+
+void input_helper::open(service_ptr_t<file> p_filehint,trackRef p_location,unsigned p_flags,abort_callback & p_abort,bool p_from_redirect,bool p_skip_hints)
+{
+	open(p_filehint,trackGetLocation( p_location ),p_flags,p_abort,p_from_redirect,p_skip_hints);
+}
+
+bool input_helper::test_if_lockless(abort_callback& a) {
+	if (m_file_in_memory || extended_param(input_params::is_tag_write_safe) != 0) return true;
+	
+#if 0
+	// doesn't work with current components because they don't support seeking_expensive either
+	if (extended_param(input_params::seeking_expensive)) {
+		// could be that the decoder doesn't understand is_tag_write_safe
+		if (matchProtocol("file", m_path)) {
+			try {
+				fileOpenWriteExisting(m_path, a);
+				return true;
+			} catch (exception_io const &) {}
+		}
+	}
+#endif
+	return false;
+}
+void input_helper::fileOpenTools(service_ptr_t<file> & p_file,const char * p_path,input_helper::ioFilters_t const & filters, abort_callback & p_abort) {
+	for( auto & f : filters ) {
+		if (f) {
+			if (f(p_file, p_path, p_abort)) break;
+		}
+    }
+}
+
+bool input_helper::need_file_reopen(const char * newPath) const {
+	return m_input.is_empty() || playable_location::path_compare(m_path, newPath) != 0;
+}
+
+bool input_helper::open_path(const char * path, abort_callback & abort, decodeOpen_t const & other) {
+	abort.check();
+
+	m_logger = other.m_logger;
+
+	if (!need_file_reopen(path)) {
+		if ( other.m_logger.is_valid() ) {
+			input_decoder_v2::ptr v2;
+			if (m_input->service_query_t(v2)) v2->set_logger(other.m_logger);
+		}
+		return false;
+	}
+	m_input.release();
+
+	service_ptr_t<file> l_file = other.m_hint;
+	fileOpenTools(l_file, path, other.m_ioFilters, abort);
+
+	m_file_in_memory = l_file.is_valid() && l_file->is_in_memory();
+
+	TRACK_CODE("input_entry::g_open_for_decoding",
+		m_input ^= input_entry::g_open(input_decoder::class_guid, l_file, path, m_logger, abort, other.m_from_redirect );
+	);
+
+	if (!other.m_skip_hints) {
+		try {
+            if ( other.m_infoHook ) {
+                other.m_infoHook( m_input, path, abort );
+            }
+#ifdef FOOBAR2000_HAVE_METADB
+			metadb_io::get()->hint_reader(m_input.get_ptr(), path, abort);
+#endif
+		}
+		catch (exception_io_data const &) {
+			//Don't fail to decode when this barfs, might be barfing when reading info from another subsong than the one we're trying to decode etc.
+			m_input.release();
+			if (l_file.is_valid()) l_file->reopen(abort);
+			TRACK_CODE("input_entry::g_open_for_decoding",
+				m_input ^= input_entry::g_open(input_decoder::class_guid, l_file, path, m_logger, abort, other.m_from_redirect);
+			);
+		}
+	}
+
+	if (other.m_shim) m_input = other.m_shim(m_input, path, abort);
+
+	m_path = path;
+	return true;
+}
+
+void input_helper::open_decoding(t_uint32 subsong, t_uint32 flags, abort_callback & p_abort) {
+	TRACK_CODE("input_decoder::initialize", m_input->initialize(subsong, flags, p_abort));
+}
+
+void input_helper::open(const playable_location & location, abort_callback & abort, decodeOpen_t const & other) {
+	open_path(location.get_path(), abort, other);
+
+	if (other.m_setSampleRate != 0) {
+		this->extended_param(input_params::set_preferred_sample_rate, other.m_setSampleRate, nullptr, 0);
+	}
+
+	open_decoding(location.get_subsong(), other.m_flags, abort);
+}
+
+void input_helper::attach(input_decoder::ptr dec, const char * path) {
+	m_input = dec;
+	m_path = path;
+}
+
+void input_helper::open(service_ptr_t<file> p_filehint, const playable_location & p_location, unsigned p_flags, abort_callback & p_abort, bool p_from_redirect, bool p_skip_hints) {
+	decodeOpen_t o;
+	o.m_hint = p_filehint;
+	o.m_flags = p_flags;
+	o.m_from_redirect = p_from_redirect;
+	o.m_skip_hints = p_skip_hints;
+	this->open(p_location, p_abort, o);
+}
+
+
+void input_helper::close() {
+	m_input.release();
+}
+
+bool input_helper::is_open() {
+	return m_input.is_valid();
+}
+
+void input_helper::set_pause(bool state) {
+	input_decoder_v3::ptr v3;
+	if (m_input->service_query_t(v3)) v3->set_pause(state);
+}
+bool input_helper::flush_on_pause() {
+	input_decoder_v3::ptr v3;
+	if (m_input->service_query_t(v3)) return v3->flush_on_pause();
+	else return false;
+}
+
+
+void input_helper::set_logger(event_logger::ptr ptr) {
+	m_logger = ptr;
+	input_decoder_v2::ptr v2;
+	if (m_input->service_query_t(v2)) v2->set_logger(ptr);
+}
+
+bool input_helper::run_raw_v2(audio_chunk& p_chunk, mem_block_container& p_raw, uint32_t knownBPS,abort_callback& p_abort) {
+	PFC_ASSERT(knownBPS >= 8 && knownBPS <= 32);
+	input_decoder_v2::ptr v2;
+	if (v2 &= m_input) {
+		try {
+			return v2->run_raw(p_chunk, p_raw, p_abort);
+			// UGLY: it may STILL FAIL with exception_not_implemented due to some underlying code not being able to handle the request!!
+		} catch (pfc::exception_not_implemented const &) {}
+	}
+	if (!m_input->run(p_chunk, p_abort)) return false;
+
+	uint32_t pad = knownBPS + 7; pad -= pad % 8;
+	p_chunk.toFixedPoint(p_raw, pad, knownBPS);
+	return true;
+}
+
+bool input_helper::run_raw(audio_chunk & p_chunk, mem_block_container & p_raw, abort_callback & p_abort) {
+	input_decoder_v2::ptr v2;
+	if (!m_input->service_query_t(v2)) throw pfc::exception_not_implemented();
+	return v2->run_raw(p_chunk, p_raw, p_abort);
+}
+
+bool input_helper::run(audio_chunk & p_chunk, abort_callback & p_abort) {
+	TRACK_CODE("input_decoder::run", return m_input->run(p_chunk, p_abort));
+}
+
+void input_helper::seek(double seconds, abort_callback & p_abort) {
+	TRACK_CODE("input_decoder::seek", m_input->seek(seconds, p_abort));
+}
+
+bool input_helper::can_seek() {
+	return m_input->can_seek();
+}
+
+bool input_helper::query_position( double & val ) {
+	return extended_param(input_params::query_position, 0, &val, sizeof(val) ) != 0;
+}
+
+size_t input_helper::extended_param(const GUID & type, size_t arg1, void * arg2, size_t arg2size) {
+	input_decoder_v4::ptr v4;
+	if (v4 &= m_input) {
+		return v4->extended_param(type, arg1, arg2, arg2size);
+	}
+	return 0;
+}
+input_helper::decodeInfo_t input_helper::decode_info() {
+	decodeInfo_t ret = {};
+	if (m_input.is_valid()) {
+		ret.m_can_seek = can_seek();
+		ret.m_flush_on_pause = flush_on_pause();
+		if (ret.m_can_seek) {
+			ret.m_seeking_expensive = extended_param(input_params::seeking_expensive, 0, nullptr, 0) != 0;
+		}
+	}
+	return ret;
+}
+
+void input_helper::on_idle(abort_callback & p_abort) {
+	if (m_input.is_valid()) {
+		TRACK_CODE("input_decoder::on_idle",m_input->on_idle(p_abort));
+	}
+}
+
+bool input_helper::get_dynamic_info(file_info & p_out,double & p_timestamp_delta) {
+	TRACK_CODE("input_decoder::get_dynamic_info",return m_input->get_dynamic_info(p_out,p_timestamp_delta));
+}
+
+bool input_helper::get_dynamic_info_track(file_info & p_out,double & p_timestamp_delta) {
+	TRACK_CODE("input_decoder::get_dynamic_info_track",return m_input->get_dynamic_info_track(p_out,p_timestamp_delta));
+}
+
+void input_helper::get_info(t_uint32 p_subsong,file_info & p_info,abort_callback & p_abort) {
+	TRACK_CODE("input_decoder::get_info",m_input->get_info(p_subsong,p_info,p_abort));
+}
+
+const char * input_helper::get_path() const {
+	return m_path;
+}
+
+
+input_helper::input_helper()
+{
+}
+
+
+void input_helper::g_get_info(const playable_location & p_location,file_info & p_info,abort_callback & p_abort,bool p_from_redirect) {
+	service_ptr_t<input_info_reader> instance;
+	input_entry::g_open_for_info_read(instance,0,p_location.get_path(),p_abort,p_from_redirect);
+	instance->get_info(p_location.get_subsong_index(),p_info,p_abort);
+}
+
+void input_helper::g_set_info(const playable_location & p_location,file_info & p_info,abort_callback & p_abort,bool p_from_redirect) {
+	service_ptr_t<input_info_writer> instance;
+	input_entry::g_open_for_info_write(instance,0,p_location.get_path(),p_abort,p_from_redirect);
+	instance->set_info(p_location.get_subsong_index(),p_info,p_abort);
+	instance->commit(p_abort);
+}
+
+#ifdef FOOBAR2000_HAVE_METADB
+bool dead_item_filter::run(const pfc::list_base_const_t<metadb_handle_ptr> & p_list,bit_array_var & p_mask) {
+	file_list_helper::file_list_from_metadb_handle_list path_list;
+	path_list.init_from_list(p_list);
+	metadb_handle_list valid_handles;
+	auto l_metadb = metadb::get();
+	for(t_size pathidx=0;pathidx<path_list.get_count();pathidx++)
+	{
+		if (is_aborting()) return false;
+		on_progress(pathidx,path_list.get_count());
+
+		const char * path = path_list[pathidx];
+
+		if (filesystem::g_is_remote_safe(path)) {
+			metadb_handle_ptr temp;
+			l_metadb->handle_create(temp,make_playable_location(path,0));
+			valid_handles.add_item(temp);
+		} else {
+			try {
+				service_ptr_t<input_info_reader> reader;
+				
+				input_entry::g_open_for_info_read(reader,0,path,*this);
+				t_uint32 count = reader->get_subsong_count();
+				for(t_uint32 n=0;n<count && !is_aborting();n++) {
+					metadb_handle_ptr ptr;
+					t_uint32 index = reader->get_subsong(n);
+					l_metadb->handle_create(ptr,make_playable_location(path,index));
+					valid_handles.add_item(ptr);
+				}
+			} catch(...) {}
+		}
+	}
+
+	if (is_aborting()) return false;
+
+	valid_handles.sort_by_pointer();
+	for(t_size listidx=0;listidx<p_list.get_count();listidx++) {
+		bool dead = valid_handles.bsearch_by_pointer(p_list[listidx]) == ~0;
+		if (dead) FB2K_console_formatter() << "Dead item: " << p_list[listidx];
+		p_mask.set(listidx,dead);
+	}
+	return !is_aborting();
+}
+
+namespace {
+
+class dead_item_filter_impl_simple : public dead_item_filter
+{
+public:
+	inline dead_item_filter_impl_simple(abort_callback & p_abort) : m_abort(p_abort) {}
+	bool is_aborting() const {return m_abort.is_aborting();}
+	abort_callback_event get_abort_event() const {return m_abort.get_abort_event();}
+	void on_progress(t_size p_position,t_size p_total) {}
+private:
+	abort_callback & m_abort;
+};
+
+}
+
+bool input_helper::g_mark_dead(const pfc::list_base_const_t<metadb_handle_ptr> & p_list,bit_array_var & p_mask,abort_callback & p_abort)
+{
+	dead_item_filter_impl_simple filter(p_abort);
+	return filter.run(p_list,p_mask);
+}
+
+#endif // #ifdef FOOBAR2000_HAVE_METADB
+
+void input_info_read_helper::open(const char * p_path,abort_callback & p_abort) {
+	if (m_input.is_empty() || playable_location::path_compare(m_path,p_path) != 0)
+	{
+		TRACK_CODE("input_entry::g_open_for_info_read",input_entry::g_open_for_info_read(m_input,0,p_path,p_abort));
+
+		m_path = p_path;
+	}
+}
+
+void input_info_read_helper::get_info(const playable_location & p_location,file_info & p_info,t_filestats & p_stats,abort_callback & p_abort) {
+	open(p_location.get_path(),p_abort);
+
+	TRACK_CODE("input_info_reader::get_file_stats",p_stats = m_input->get_file_stats(p_abort));
+
+	TRACK_CODE("input_info_reader::get_info",m_input->get_info(p_location.get_subsong_index(),p_info,p_abort));
+}
+
+#ifdef FOOBAR2000_HAVE_METADB
+void input_info_read_helper::get_info_check(const playable_location & p_location,file_info & p_info,t_filestats & p_stats,bool & p_reloaded,abort_callback & p_abort) {
+	open(p_location.get_path(),p_abort);
+	t_filestats newstats;
+	TRACK_CODE("input_info_reader::get_file_stats",newstats = m_input->get_file_stats(p_abort));
+	if (metadb_handle::g_should_reload(p_stats,newstats,true)) {
+		p_stats = newstats;
+		TRACK_CODE("input_info_reader::get_info",m_input->get_info(p_location.get_subsong_index(),p_info,p_abort));
+		p_reloaded = true;
+	} else {
+		p_reloaded = false;
+	}
+}
+#endif // #ifdef FOOBAR2000_HAVE_METADB
+
+// openAudioData code
+
+static constexpr openAudioDataFormat formatNative = (sizeof(audio_sample) == sizeof(double)) ? openAudioDataFormat::float64 : openAudioDataFormat::float32;
+
+namespace {
+
+	class file_decodedaudio : public file_readonly {
+	public:
+		void init(const playable_location & loc, input_helper::decodeOpen_t const & arg, openAudioDataFormat format, abort_callback & aborter) {
+			FILE_DECODEDAUDIO_PRINT("opening: ", loc );
+			m_length = -1; m_lengthKnown = false;
+			m_format = format;
+			m_subsong = loc.get_subsong();
+			m_decoder ^= input_entry::g_open( input_decoder::class_guid, arg.m_hint, loc.get_path(), arg.m_logger, aborter, arg.m_from_redirect);
+			m_seekable = ( arg.m_flags & input_flag_no_seeking ) == 0 && m_decoder->can_seek();
+			m_flags = arg.m_flags;
+			reopenDecoder(aborter);
+			readChunk(aborter, true);
+		}
+		void init(const playable_location & loc, bool bSeekable, file::ptr fileHint, abort_callback & aborter) {
+			FILE_DECODEDAUDIO_PRINT("opening: ", loc);
+			m_length = -1; m_lengthKnown = false;
+			m_subsong = loc.get_subsong();
+			input_entry::g_open_for_decoding(m_decoder, fileHint, loc.get_path(), aborter);
+			m_seekable = bSeekable && m_decoder->can_seek();
+			reopenDecoder(aborter);
+			readChunk(aborter, true);
+		}
+
+		void reopen(abort_callback & aborter) override {
+
+			// Have valid chunk and it is the first chunk in the stream? Reset read pointers and bail, no need to reopen
+			if (m_chunk.get_sample_count() > 0 && m_chunkBytesPtr == m_currentPosition) {
+				m_currentPosition = 0;
+				m_chunkBytesPtr = 0;
+				m_eof = false;
+				return;
+			}
+
+			reopenDecoder(aborter);
+			readChunk(aborter);
+		}
+
+		bool is_remote() override {
+			return false;
+		}
+		t_filetimestamp get_timestamp(abort_callback & p_abort) override {
+			return m_decoder->get_file_stats(p_abort).m_timestamp;
+		}
+		void on_idle(abort_callback & p_abort) override {
+			m_decoder->on_idle(p_abort);
+		}
+		bool get_content_type(pfc::string_base & p_out) override {
+			return false;
+		}
+		bool can_seek() override {
+			return m_seekable;
+		}
+		void seek(t_filesize p_position, abort_callback & p_abort) override {
+			if (!m_seekable) throw exception_io_object_not_seekable();
+
+
+			{
+				t_filesize chunkBegin = m_currentPosition - m_chunkBytesPtr;
+				t_filesize chunkEnd = chunkBegin + curChunkBytes();
+				if (p_position >= chunkBegin && p_position < chunkEnd) {
+					m_chunkBytesPtr = (size_t)(p_position - chunkBegin);
+					m_currentPosition = p_position;
+					m_eof = false;
+					return;
+				}
+			}
+
+			{
+				t_filesize s = get_size(p_abort);
+				if (s != filesize_invalid) {
+					if (p_position > s) throw exception_io_seek_out_of_range();
+					if (p_position == s) {
+						m_chunk.reset(); m_curChunkBytes = 0; m_chunkBytesPtr = 0; 
+						m_currentPosition = p_position;
+						m_eof = true;
+						return;
+					}
+				}
+			}
+
+
+			
+			const auto row = m_spec.chanCount * sampleBytes();
+			t_filesize samples = p_position / row;
+			const double seekTime = audio_math::samples_to_time(samples, m_spec.sampleRate);
+			m_decoder->seek(seekTime, p_abort);
+			m_eof = false; // do this before readChunk
+			if (!this->readChunk(p_abort)) {
+				throw std::runtime_error( ( PFC_string_formatter() << "Premature EOF in referenced audio file at " << pfc::format_time_ex(seekTime, 6) << " out of " << pfc::format_time_ex(length(p_abort), 6) ).get_ptr() );
+			}
+			m_chunkBytesPtr = p_position % row;
+			if (m_chunkBytesPtr > curChunkBytes()) {
+				// Should not ever happen
+				m_chunkBytesPtr = 0;
+				throw std::runtime_error("Decoder returned invalid data");
+			}
+
+			m_currentPosition = p_position;
+			m_eof = false;
+		}
+
+		t_filesize get_size(abort_callback & aborter) override {
+			const double l = length(aborter);
+			if (l <= 0) return filesize_invalid;
+			return audio_math::time_to_samples(l, m_spec.sampleRate) * m_spec.chanCount * sampleBytes();
+		}
+		t_filesize get_position(abort_callback & p_abort) override {
+			return m_currentPosition;
+		}
+		t_size read(void * p_buffer, t_size p_bytes, abort_callback & p_abort) override {
+			FILE_DECODEDAUDIO_PRINT("read(", p_bytes, ")");
+			size_t done = 0;
+			for (;;) {
+				p_abort.check();
+				{
+					const size_t inChunk = curChunkBytes();
+					const size_t inChunkRemaining = inChunk - m_chunkBytesPtr;
+					const size_t delta = pfc::min_t<size_t>(inChunkRemaining, (p_bytes - done));
+					memcpy((uint8_t*)p_buffer + done, (const uint8_t*)m_curChunkPtr + m_chunkBytesPtr, delta);
+					m_chunkBytesPtr += delta;
+					done += delta;
+					m_currentPosition += delta;
+
+					if (done == p_bytes) break;
+				}
+				if (!readChunk(p_abort)) break;
+			}
+			FILE_DECODEDAUDIO_PRINT("read(", p_bytes, ") returning ", done);
+			return done;
+		}
+		audio_chunk::spec_t const & get_spec() const { return m_spec; }
+	private:
+		void reopenDecoder(abort_callback & aborter) {
+			uint32_t flags = m_flags | input_flag_no_looping;
+			if (!m_seekable) flags |= input_flag_no_seeking;
+			
+			m_decoder->initialize(m_subsong, flags, aborter);
+			m_eof = false;
+			m_currentPosition = 0;
+		}
+		size_t curChunkBytes() const {
+			return m_curChunkBytes;
+		}
+		bool readChunk(abort_callback & aborter, bool initial = false) {
+			m_chunkBytesPtr = 0;
+			FILE_DECODEDAUDIO_PRINT("readChunk()");
+			for (;;) {
+				if (m_eof || !m_decoder->run(m_chunk, aborter)) {
+					if (initial) throw std::runtime_error("Decoder produced no data");
+					m_eof = true;
+					m_chunk.reset(); m_curChunkBytes = 0;
+					FILE_DECODEDAUDIO_PRINT("readChunk() EOF");
+					return false;
+				}
+				if (m_chunk.is_valid()) break;
+			}
+			PFC_ASSERT(m_chunk.get_peak() < 100);
+			audio_chunk::spec_t spec = m_chunk.get_spec();
+			if (initial) m_spec = spec;
+			else if (m_spec != spec) throw std::runtime_error("Sample format change in mid stream");
+
+			auto inPtr = m_chunk.get_data();
+			const size_t inCount = m_chunk.get_used_size();
+			m_curChunkBytes = inCount * sampleBytes();
+			FILE_DECODEDAUDIO_PRINT("readChunk(): ", m_chunk.get_sample_count(), " samples, ", m_curChunkBytes, " bytes");
+			if ( m_format == formatNative ) {
+				m_curChunkPtr = inPtr;
+			} else {
+				m_altFormatBuffer.grow_size(m_curChunkBytes);
+				m_curChunkPtr = m_altFormatBuffer.get_ptr();
+				switch (m_format) {
+				case openAudioDataFormat::float32:
+					{ auto out = reinterpret_cast<float*>(m_curChunkPtr); for (size_t walk = 0; walk < inCount; ++walk) out[walk] = (float)inPtr[walk]; }
+					break;
+				case openAudioDataFormat::float64:
+					{ auto out = reinterpret_cast<double*>(m_curChunkPtr); for (size_t walk = 0; walk < inCount; ++walk) out[walk] = (double)inPtr[walk]; }
+					break;
+				default:
+					PFC_ASSERT(!"???");
+				}
+			}
+
+			return true;
+		}
+		double length(abort_callback & aborter) {
+			if (!m_lengthKnown) {
+				file_info_impl temp;
+				m_decoder->get_info(m_subsong, temp, aborter);
+				m_length = temp.get_length();
+				m_lengthKnown = true;
+			}
+			return m_length;
+		}
+		unsigned sampleBytes() const {
+			return m_format == openAudioDataFormat::float32 ? 4 : 8;
+		}
+		audio_chunk_fast_impl m_chunk;
+		size_t m_chunkBytesPtr;
+		audio_chunk::spec_t m_spec;
+		double m_length;
+		bool m_lengthKnown;
+		bool m_seekable;
+		uint32_t m_subsong;
+		input_decoder::ptr m_decoder;
+		bool m_eof;
+		t_filesize m_currentPosition;
+		unsigned m_flags = 0;
+		openAudioDataFormat m_format = formatNative;
+
+		pfc::array_t<uint8_t> m_altFormatBuffer;
+		void* m_curChunkPtr = nullptr;
+		size_t m_curChunkBytes = 0;
+	};
+
+}
+
+openAudioData_t openAudioData3(playable_location const& loc, input_helper::decodeOpen_t const& openArg, openAudioDataFormat format, abort_callback& aborter) {
+	service_ptr_t<file_decodedaudio> f; f = new service_impl_t < file_decodedaudio >;
+	f->init(loc, openArg, format, aborter);
+
+	openAudioData_t oad = {};
+	oad.audioData = f;
+	oad.audioSpec = f->get_spec();
+	return oad;
+}
+
+openAudioData_t openAudioData2(playable_location const & loc, input_helper::decodeOpen_t const & openArg, abort_callback & aborter) {
+	return openAudioData3(loc, openArg, formatNative, aborter);
+}
+
+openAudioData_t openAudioData(playable_location const & loc, bool bSeekable, file::ptr fileHint, abort_callback & aborter) {
+	service_ptr_t<file_decodedaudio> f; f = new service_impl_t < file_decodedaudio > ;
+	f->init(loc, bSeekable, fileHint, aborter);
+
+	openAudioData_t oad = {};
+	oad.audioData = f;
+	oad.audioSpec = f->get_spec();
+	return oad;
+}