void Source::GenerateFrame() {
current_frame.fill({});
if (state.current_buffer.empty() && !DequeueBuffer()) {
state.enabled = false;
state.buffer_update = true;
state.current_buffer_id = 0;
return;
}
size_t frame_position = 0;
state.current_sample_number = state.next_sample_number;
while (frame_position < current_frame.size()) {
if (state.current_buffer.empty() && !DequeueBuffer()) {
break;
}
const size_t size_to_copy = std::min(state.current_buffer.size(), current_frame.size() - frame_position);
std::copy(state.current_buffer.begin(), state.current_buffer.begin() + size_to_copy, current_frame.begin() + frame_position);
state.current_buffer.erase(state.current_buffer.begin(), state.current_buffer.begin() + size_to_copy);
frame_position += size_to_copy;
state.next_sample_number += static_cast<u32>(size_to_copy);
}
state.filters.ProcessFrame(current_frame);
}
void Source::GenerateFrame() {
current_frame.fill({});
if (state.current_buffer.empty() && !DequeueBuffer()) {
state.enabled = false;
state.buffer_update = true;
state.current_buffer_id = 0;
return;
}
size_t frame_position = 0;
state.current_sample_number = state.next_sample_number;
while (frame_position < current_frame.size()) {
if (state.current_buffer.empty() && !DequeueBuffer()) {
break;
}
switch (state.interpolation_mode) {
case InterpolationMode::None:
AudioInterp::None(state.interp_state, state.current_buffer, state.rate_multiplier,
current_frame, frame_position);
break;
case InterpolationMode::Linear:
AudioInterp::Linear(state.interp_state, state.current_buffer, state.rate_multiplier,
current_frame, frame_position);
break;
case InterpolationMode::Polyphase:
// TODO(merry): Implement polyphase interpolation
LOG_DEBUG(Audio_DSP, "Polyphase interpolation unimplemented; falling back to linear");
AudioInterp::Linear(state.interp_state, state.current_buffer, state.rate_multiplier,
current_frame, frame_position);
break;
default:
UNIMPLEMENTED();
break;
}
}
state.next_sample_number += static_cast<u32>(frame_position);
state.filters.ProcessFrame(current_frame);
}
