forked from Bananymous/banan-os
49 lines
1.2 KiB
C++
49 lines
1.2 KiB
C++
#pragma once
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#include <kernel/Device/Device.h>
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#include <kernel/PCI.h>
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namespace Kernel
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{
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class AudioController : public CharacterDevice
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{
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public:
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static BAN::ErrorOr<BAN::RefPtr<AudioController>> create(PCI::Device& pci_device);
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dev_t rdev() const override { return m_rdev; }
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BAN::StringView name() const override { return m_name; }
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protected:
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AudioController();
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virtual void handle_new_data() = 0;
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virtual uint32_t get_channels() const = 0;
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virtual uint32_t get_sample_rate() const = 0;
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bool can_read_impl() const override { return false; }
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bool can_write_impl() const override { SpinLockGuard _(m_spinlock); return m_sample_data_size < m_sample_data_capacity; }
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bool has_error_impl() const override { return false; }
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bool has_hungup_impl() const override { return false; }
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BAN::ErrorOr<size_t> write_impl(off_t, BAN::ConstByteSpan) override;
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BAN::ErrorOr<long> ioctl_impl(int cmd, void* arg) override;
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protected:
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ThreadBlocker m_sample_data_blocker;
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mutable SpinLock m_spinlock;
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static constexpr size_t m_sample_data_capacity = 1 << 20;
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uint8_t m_sample_data[m_sample_data_capacity];
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size_t m_sample_data_head { 0 };
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size_t m_sample_data_size { 0 };
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private:
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const dev_t m_rdev;
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char m_name[10] {};
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};
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}
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