add some bounds checking asserts

src/audio/include/stream_info.hpp

@@ -67,6 +67,7 @@ class InputStream {
   explicit InputStream(RawStream* s) : raw_(s) {}
 
   void consume(std::size_t bytes) const {
+    assert(raw_->info->bytes_in_stream >= bytes);
     auto new_data = raw_->data.subspan(bytes);
     std::move(new_data.begin(), new_data.end(), raw_->data.begin());
     raw_->info->bytes_in_stream = new_data.size_bytes();
@@ -88,7 +89,10 @@ class OutputStream {
  public:
   explicit OutputStream(RawStream* s) : raw_(s) {}
 
-  void add(std::size_t bytes) const { raw_->info->bytes_in_stream += bytes; }
+  void add(std::size_t bytes) const {
+    assert(raw_->info->bytes_in_stream + bytes <= raw_->data.size_bytes());
+    raw_->info->bytes_in_stream += bytes;
+  }
 
   bool prepare(const StreamInfo::Format& new_format) {
     if (std::holds_alternative<std::monostate>(raw_->info->format)) {