Perfected Audio

src/dawntools/CMakeLists.txt

@@ -3,6 +3,7 @@
 # This software is released under the MIT License.
 # https://opensource.org/licenses/MIT
 
+add_subdirectory(audio)
 add_subdirectory(display)
 add_subdirectory(file)
 add_subdirectory(locale)

src/dawntools/audio/CMakeLists.txt

@@ -0,0 +1,15 @@
+# Copyright (c) 2021 Dominic Msters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+add_subdirectory(audiogen)
+
+# Texture Tool
+function(tool_audio target in)
+  add_custom_target(${target}
+    COMMAND audiogen "${DAWN_ASSETS_SOURCE_DIR}/${in}" "${DAWN_ASSETS_BUILD_DIR}/${target}"
+    COMMENT "Generating audio ${target} from ${in}"
+    DEPENDS audiogen
+  )
+endfunction()

src/dawntools/audio/audiogen/CMakeLists.txt

@@ -0,0 +1,23 @@
+# Copyright (c) 2021 Dominic Msters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Texture Build Tool
+project(audiogen VERSION 1.0)
+add_executable(audiogen)
+target_sources(audiogen
+  PRIVATE
+    main.cpp
+    ../../utils/file.c
+)
+target_include_directories(audiogen
+  PUBLIC
+    ${CMAKE_CURRENT_LIST_DIR}/../../
+    ${CMAKE_CURRENT_LIST_DIR}
+)
+target_link_libraries(audiogen
+  PUBLIC
+    ${DAWN_BUILD_HOST_LIBS}
+    AudioFile
+)

src/dawntools/audio/audiogen/main.cpp

@@ -0,0 +1,78 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+extern "C" {
+  #include "../../utils/common.h"
+  #include "../../utils/file.h"
+}
+#include "AudioFile.h"
+
+int main(int argc, char *argv[]) {
+  FILE *fileOut;
+  char buffer[FILENAME_MAX];
+  size_t bufferLength = 0;
+
+  if(argc != 3) {
+    printf("Invalid number of arguments\n");
+    return 1;
+  }
+
+  fileNormalizeSlashes(argv[1]);
+  fileNormalizeSlashes(argv[2]);
+  std::string strFileIn = std::string(argv[1]);
+  std::string strFileOut = std::string(argv[2]);
+  
+  buffer[0] = '\0';
+  sprintf(buffer, "%s.audio", strFileOut.c_str());
+  fileOut = fopen(buffer, "rb");
+  if(fileOut != NULL) {
+    fclose(fileOut);
+    return 0;
+  }
+
+  // Load input file
+  AudioFile<double_t> audioFile;
+  if(!audioFile.load(strFileIn)) {
+    printf("Failed to load audio file.\n");
+    return 1;
+  }
+
+  // Open Output File
+  fileMkdirp(buffer);
+  fileOut = fopen(buffer, "wb");
+  if(fileOut == NULL) {
+    printf("Failed to create output file\n");
+    return 1;
+  }
+
+  // Write header
+  buffer[0] = '\0';
+  sprintf(buffer, "%i|%i|%i|%i|",
+    audioFile.getNumChannels(),
+    audioFile.getSampleRate(),
+    audioFile.getNumSamplesPerChannel(),
+    audioFile.getNumSamplesPerChannel() * audioFile.getNumChannels()*(
+      sizeof(int16_t) / sizeof(uint8_t)
+    )
+  );
+  bufferLength = strlen(buffer);
+  fwrite(buffer, sizeof(char), bufferLength,  fileOut);
+
+  // Convert Data to 16 bit audio
+  for (int i = 0; i < audioFile.getNumSamplesPerChannel(); i++) {
+    for(int y = 0; y < audioFile.getNumChannels(); y++) {
+      double_t sample = audioFile.samples[y][i];
+      sample = sample < -1 ? -1 : sample > 1 ? 1 : sample;
+      auto q = static_cast<int16_t> (sample * 32767.);
+      
+      buffer[0] = (q >> 8) & 0xFF;
+      buffer[1] = q & 0xFF;
+      fwrite(buffer, sizeof(uint8_t), 2, fileOut);
+    }
+  }
+
+  fclose(fileOut);
+  return 0;
+}