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comparison foosdk/sdk/foobar2000/helpers/metadb_io_callback_v2_data.h @ 1:20d02a178406 default tip

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*: check in everything else yay
author Paper <paper@tflc.us>
date Mon, 05 Jan 2026 02:15:46 -0500
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0:e9bb126753e7 1:20d02a178406
1 #pragma once
2
3 #pragma once
4 #include <mutex>
5 #include <vector>
6 #include <SDK/metadb_callbacks.h>
7
8 class metadb_io_callback_v2_data_impl : public metadb_io_callback_v2_data {
9 metadb_handle_list_cref m_items;
10 pfc::array_t< metadb_v2_rec_t> m_data;
11 std::once_flag m_once;
12 public:
13 metadb_io_callback_v2_data_impl(metadb_handle_list_cref items) : m_items(items) {}
14 metadb_v2_rec_t get(size_t idxInList) override {
15 // Late init, don't hammer metadb if nobody cares
16 // Maybe this should be offthread somehow?? Kick off early, stall till done once asked?
17 std::call_once(m_once, [&] { m_data = metadb_v2::get()->queryMultiSimple(m_items); });
18 PFC_ASSERT(m_data.size() == m_items.get_size());
19 PFC_ASSERT(idxInList < m_data.size());
20 return m_data[idxInList];
21 }
22 };
23
24 class metadb_io_callback_v2_data_wrap : public metadb_io_callback_v2_data {
25 public:
26 metadb_io_callback_v2_data_wrap(metadb_io_callback_v2_data& chain) : m_chain(chain) {}
27 metadb_io_callback_v2_data& m_chain;
28 std::vector<size_t> m_mapping;
29
30 metadb_v2_rec_t get(size_t idxInList) override {
31 PFC_ASSERT(idxInList < m_mapping.size());
32 return m_chain[m_mapping[idxInList]];
33 }
34 };
35
36 class metadb_io_callback_v2_data_mirror : public metadb_io_callback_v2_data {
37 public:
38 metadb_v2_rec_t get(size_t idxInList) override {return m_data[idxInList];}
39
40 metadb_io_callback_v2_data_mirror() {}
41 metadb_io_callback_v2_data_mirror(metadb_io_callback_v2_data& source, size_t size) {
42 init(source, size);
43 }
44 void init(metadb_io_callback_v2_data& source, size_t size) {
45 m_data.set_size_discard(size);
46 for (size_t w = 0; w < size; ++w) m_data[w] = source[w];
47 }
48 private:
49 pfc::array_t< metadb_v2_rec_t> m_data;
50 };