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53b95fea19
The setting does not actually define the channels themselves, only the downmix option that the PS3 provides. Channels might be changed seperately in the future.
107 lines
2.2 KiB
C++
107 lines
2.2 KiB
C++
#include "stdafx.h"
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#include "AudioBackend.h"
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#include "Emu/system_config.h"
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AudioBackend::AudioBackend()
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{
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m_convert_to_u16 = static_cast<bool>(g_cfg.audio.convert_to_u16);
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m_sample_size = m_convert_to_u16 ? sizeof(u16) : sizeof(float);
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m_start_threshold = g_cfg.audio.start_threshold;
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const u32 sampling_period_multiplier_u32 = g_cfg.audio.sampling_period_multiplier;
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if (sampling_period_multiplier_u32 == 100)
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{
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m_sampling_rate = DEFAULT_AUDIO_SAMPLING_RATE;
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}
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else
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{
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const f32 sampling_period_multiplier = sampling_period_multiplier_u32 / 100.0f;
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const f32 sampling_rate_multiplier = 1.0f / sampling_period_multiplier;
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m_sampling_rate = static_cast<u32>(f32{ DEFAULT_AUDIO_SAMPLING_RATE } *sampling_rate_multiplier);
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}
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const audio_downmix downmix = g_cfg.audio.audio_channel_downmix.get();
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switch (downmix)
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{
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case audio_downmix::no_downmix:
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m_channels = 8;
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break;
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case audio_downmix::downmix_to_stereo:
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m_channels = 2;
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break;
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case audio_downmix::downmix_to_5_1:
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m_channels = 6;
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break;
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case audio_downmix::use_application_settings:
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m_channels = 2; // TODO
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break;
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default:
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fmt::throw_exception("Unknown audio channel mode %s (%d)", downmix, static_cast<int>(downmix));
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}
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}
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/*
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* Helper methods
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*/
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u32 AudioBackend::get_sampling_rate() const
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{
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return m_sampling_rate;
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}
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u32 AudioBackend::get_sample_size() const
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{
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return m_sample_size;
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}
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u32 AudioBackend::get_channels() const
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{
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return m_channels;
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}
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bool AudioBackend::get_convert_to_u16() const
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{
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return m_convert_to_u16;
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}
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bool AudioBackend::has_capability(u32 cap) const
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{
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return (cap & GetCapabilities()) == cap;
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}
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void AudioBackend::dump_capabilities(std::string& out) const
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{
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u32 count = 0;
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u32 capabilities = GetCapabilities();
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if (capabilities & PLAY_PAUSE_FLUSH)
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{
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fmt::append(out, "PLAY_PAUSE_FLUSH");
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count++;
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}
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if (capabilities & IS_PLAYING)
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{
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fmt::append(out, "%sIS_PLAYING", count > 0 ? " | " : "");
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count++;
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}
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if (capabilities & GET_NUM_ENQUEUED_SAMPLES)
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{
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fmt::append(out, "%sGET_NUM_ENQUEUED_SAMPLES", count > 0 ? " | " : "");
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count++;
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}
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if (capabilities & SET_FREQUENCY_RATIO)
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{
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fmt::append(out, "%sSET_FREQUENCY_RATIO", count > 0 ? " | " : "");
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count++;
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}
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if (count == 0)
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{
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fmt::append(out, "NONE");
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}
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}
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