AudioServer: Avoid two heap allocations per mixing iteration.

cubiclove · Jul 27, 2019 · b805f11 · b805f11
1 parent 4262480
commit b805f11
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/Servers/AudioServer/ASMixer.cpp b/Servers/AudioServer/ASMixer.cpp
@@ -61,7 +61,7 @@ void ASMixer::mix()
 
  max_size = min(1023, max_size);
 
- Vector<ASample> mixed_buffer;
+ Vector<ASample, 1024> mixed_buffer;
  mixed_buffer.resize(max_size);
 
  // Mix the buffers together into the output
@@ -91,7 +91,8 @@ void ASMixer::mix()
  // max_size is 0 indexed, so add 1.
  const int output_buffer_byte_size = (max_size + 1) * 2 * 2;
  ASSERT(output_buffer_byte_size == 4096);
- ByteBuffer buffer(ByteBuffer::create_uninitialized(output_buffer_byte_size));
+ u8 raw_buffer[4096];
+ auto buffer = ByteBuffer::wrap(raw_buffer, sizeof(raw_buffer));
  BufferStream stream(buffer);
 
  for (int i = 0; i < mixed_buffer.size(); ++i) {