Sebastian @ HfG
67 lines
1.6 KiB
C++
67 lines
1.6 KiB
C++
#pragma once
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#include <libremidi/backends/alsa_raw/helpers.hpp>
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#include <libremidi/config.hpp>
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#include <libremidi/detail/observer.hpp>
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namespace libremidi::alsa_raw_ump
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{
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struct midi2_enumerator : alsa_raw::enumerator
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{
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using alsa_raw::enumerator::enumerator;
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void enumerate_devices(int card) override
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{
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using namespace std::literals;
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char name[128];
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sprintf(name, "hw:%d", card);
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// Open card.
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alsa_raw::snd_ctl_wrapper ctl{*this, name};
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if (!ctl)
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return;
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// Enumerate devices.
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int device = -1;
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do
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{
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const int status = snd.ctl.ump.next_device(ctl, &device);
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if (device == -1)
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return;
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if (status < 0)
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{
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handler.libremidi_handle_error(
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configuration, "Cannot determine device number: "s + snd.strerror(status));
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break;
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}
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if (device >= 0)
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{
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enumerate_blocks(ctl, card, device);
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enumerate_endpoints(ctl, card, device);
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}
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} while (device >= 0);
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}
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void enumerate_endpoints(snd_ctl_t* ctl, [[maybe_unused]] int card, [[maybe_unused]] int device)
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{
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snd_ump_endpoint_info_t* info{};
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snd_ump_endpoint_info_alloca(&info);
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snd.ctl.ump.endpoint_info(ctl, info);
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fprintf(stderr, "UMP endpoint: %s", snd.ump.endpoint_info_get_name(info));
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}
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void enumerate_blocks(snd_ctl_t* ctl, [[maybe_unused]] int card, [[maybe_unused]] int device)
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{
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snd_ump_block_info_t* info{};
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snd_ump_block_info_alloca(&info);
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snd.ctl.ump.block_info(ctl, info);
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fprintf(stderr, "UMP block: %s", snd.ump.block_info_get_name(info));
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}
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};
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}
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