miniaudio: finish implementation

Author: jcelerier

src/ossia/audio/miniaudio_protocol.hpp

@@ -1,7 +1,8 @@
 #pragma once
 #include <ossia/detail/config.hpp>
 
-//#if 1 || defined(OSSIA_ENABLE_MINIAUDIO)
+#if __has_include(<miniaudio.h>)
+#define OSSIA_ENABLE_MINIAUDIO 1
 #define MINIAUDIO_IMPLEMENTATION
 #if defined(__APPLE__)
 #define MA_NO_RUNTIME_LINKING 1
@@ -16,32 +17,74 @@
 #define MA_NO_NODE_GRAPH 1
 #define MA_NO_GENERATION 1
 #define MA_API
-#if __has_include(<miniaudio.h>)
+
 #include <ossia/audio/audio_engine.hpp>
 #include <ossia/detail/thread.hpp>
 
-#include <miniaudio.h>
+#include <kfr/base/conversion.hpp>
 
-#include <iostream>
+#include <miniaudio.h>
 
 #define OSSIA_AUDIO_MINIAUDIO 1
 
 namespace ossia
 {
+struct miniaudio_context
+{
+  ma_context context;
+};
+
 class miniaudio_engine final : public audio_engine
 {
+
 public:
+  std::vector<const ma_device_info*> devices;
+  bool is_duplex(const ma_device_id& card_in, const ma_device_id& card_out)
+  {
+#if defined(__APPLE__)
+    return true;
+    std::string_view i = card_in.coreaudio;
+    std::string_view o = card_out.coreaudio;
+    if(i.length() != o.length() || i.empty() || o.empty())
+      return false;
+    if(i.substr(0, i.size() - 1) == o.substr(0, o.size() - 1))
+      return true;
+
+#endif
+    return memcmp(&card_in, &card_out, sizeof(ma_device_id)) == 0;
+  }
   miniaudio_engine(
-      std::string name, std::string card_in, std::string card_out, int inputs,
-      int outputs, int rate, int bs)
+      std::shared_ptr<miniaudio_context> ctx, std::string name,
+      const ma_device_id& card_in, const ma_device_id& card_out, int inputs, int outputs,
+      int rate, int bs)
+      : m_ctx{std::move(ctx)}
   {
-    ma_device_config config = ma_device_config_init(ma_device_type_duplex);
+    ma_device_type dtype = ma_device_type_duplex;
+    if(inputs == 0)
+      dtype = ma_device_type_playback;
+    else if(outputs == 0)
+      dtype = ma_device_type_capture;
+
+    ma_device_config config = ma_device_config_init(dtype);
+
     config.sampleRate = rate;
     config.periodSizeInFrames = bs;
-    config.playback.channels = outputs;
-    config.playback.format = ma_format_f32;
-    config.capture.channels = inputs;
-    config.capture.format = ma_format_f32;
+
+    if(outputs > 0)
+    {
+      config.playback.pDeviceID = &card_out;
+      config.playback.channels = outputs;
+      config.playback.format = ma_format_f32;
+      // config.playback.shareMode = ma_share_mode_exclusive;
+    }
+
+    if(inputs > 0)
+    {
+      config.capture.pDeviceID = &card_in;
+      config.capture.channels = inputs;
+      config.capture.format = ma_format_f32;
+      // config.capture.shareMode = ma_share_mode_exclusive;
+    }
 
     config.dataCallback = callback;
 
@@ -50,11 +93,19 @@ class miniaudio_engine final : public audio_engine
     config.noClip = false;
     config.noDisableDenormals = false;
     config.noPreSilencedOutputBuffer = false;
+
     config.pUserData = this;
 
-    if(ma_device_init(NULL, &config, &m_stream) != MA_SUCCESS)
+    if(ma_device_init(&m_ctx->context, &config, &m_stream) != MA_SUCCESS)
       throw std::runtime_error("Cannot initialize miniaudio");
-    ma_device_start(&m_stream);
+
+    if(ma_device_start(&m_stream) != MA_SUCCESS)
+      throw std::runtime_error("Cannot start miniaudio");
+
+    this->effective_buffer_size = bs;
+    this->effective_sample_rate = rate;
+    this->effective_inputs = inputs;
+    this->effective_outputs = outputs;
   }
 
   bool running() const override
@@ -91,20 +142,29 @@ class miniaudio_engine final : public audio_engine
       return;
     }
 
-    auto float_input = ((float* const*)input);
-    auto float_output = ((float**)output);
+    float ins_data[self.effective_inputs * nframes];
+    float* ins[self.effective_inputs + 2];
+    for(int i = 0; i < self.effective_inputs; i++)
+      ins[i] = ins_data + i * nframes;
+    kfr::deinterleave(ins, (float*)input, self.effective_inputs, nframes);
+
+    float outs_data[self.effective_outputs * nframes];
+    std::memset(outs_data, 0, sizeof(float) * self.effective_outputs * nframes);
+    float* outs[self.effective_outputs + 2];
+    for(int i = 0; i < self.effective_outputs; i++)
+      outs[i] = outs_data + i * nframes;
 
-    ossia::audio_tick_state ts{float_input,
-                               float_output,
-                               self.effective_inputs,
-                               self.effective_outputs,
-                               nframes,
-                               0};
+    ossia::audio_tick_state ts{(float* const*)ins,     outs,    self.effective_inputs,
+                               self.effective_outputs, nframes, 0}; //FIXME timing
     self.audio_tick(ts);
 
     self.tick_end();
+
+    kfr::interleave(
+        (float*)output, (const float**)outs, self.effective_outputs, nframes);
   }
 
+  std::shared_ptr<miniaudio_context> m_ctx;
   ma_device m_stream;
 };
 }