Perfected Audio

src/dawn/asset/AssetManager.hpp

@@ -7,6 +7,7 @@
 #include "Asset.hpp"
 #include "util/array.hpp"
 
+#include "assets/AudioAsset.hpp"
 #include "assets/LanguageAsset.hpp"
 #include "assets/TextureAsset.hpp"
 #include "assets/TilesetAsset.hpp"

src/dawn/asset/assets/AudioAsset.cpp

@@ -0,0 +1,77 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "AudioAsset.hpp"
+
+using namespace Dawn;
+
+AudioAsset::AudioAsset(AssetManager *man, std::string name) :
+  Asset(man, name),
+  loader(name + ".audio")
+{
+
+}
+
+void AudioAsset::updateSync() {
+  if(this->state != 0x07) return;
+
+  // THIS WILL DEFINITELY CHANGE
+  this->state = 0x08;
+  this->loaded = true;
+  this->eventLoaded.invoke();
+}
+
+void AudioAsset::updateAsync() {
+  if(this->state != 0x00) return;
+  char *start, *end;
+  char buffer[1024];
+
+  // Open asset for reading
+  this->state = 0x01;
+  this->loader.open();
+
+  // Parse header data.
+  this->state = 0x02;
+  this->loader.read((uint8_t *)buffer, 1024);
+
+  // Channel count
+  this->state = 0x03;
+  start = buffer;
+  end = strchr(start, '|');
+  *end = '\0';
+  this->channelCount = atoi(start);
+  assertTrue(this->channelCount > 0);
+
+  // Sample Rate
+  this->state = 0x04;
+  start = end + 1;
+  end = strchr(start, '|');
+  *end = '\0';
+  this->sampleRate = (uint32_t)strtoul(start, NULL, 10);
+  assertTrue(this->sampleRate > 0);
+
+  // Number of samples per channel
+  this->state = 0x05;
+  start = end + 1;
+  end = strchr(start, '|');
+  *end = '\0';
+  this->samplesPerChannel = atoi(start);
+  assertTrue(this->samplesPerChannel > 0);
+
+  // Total Data Length
+  this->state = 0x06;
+  start = end + 1;
+  end = strchr(start, '|');
+  *end = '\0';
+  this->bufferSize = (size_t)atoll(start);
+  assertTrue(this->bufferSize > 0);
+
+  // Determine frame size
+  this->frameSize = sizeof(int16_t) * this->channelCount;
+
+  // Indicated start of data
+  this->state = 0x07;
+  this->bufferStart = end - buffer;
+}

src/dawn/asset/assets/AudioAsset.hpp

@@ -0,0 +1,33 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "../Asset.hpp"
+#include "../AssetLoader.hpp"
+
+namespace Dawn {
+  class AudioSource;
+
+  class AudioAsset : public Asset {
+    protected:
+      AssetLoader loader;
+      uint8_t state = 0x00;
+
+      int32_t channelCount;
+      uint32_t sampleRate;
+      int32_t samplesPerChannel;
+      size_t bufferSize;
+      size_t bufferStart;
+      size_t frameSize;
+
+    public:
+      AudioAsset(AssetManager *man, std::string name);
+
+      void updateSync() override;
+      void updateAsync() override;
+
+      friend class AudioSource;
+  };
+}

src/dawn/asset/assets/CMakeLists.txt

@@ -6,6 +6,7 @@
 # Sources
 target_sources(${DAWN_TARGET_NAME}
   PRIVATE
+    AudioAsset.cpp
     LanguageAsset.cpp
     TextureAsset.cpp
     TilesetAsset.cpp