Fix spurious stream starts

src/audio/audio_decoder.cpp

@@ -142,7 +142,6 @@ auto AudioDecoder::Process(const std::vector<InputStream>& inputs,
     // before starting to process data.
     // TODO(jacqueline): Pass through seek info here?
     if (!has_prepared_output_ && !output->prepare(*current_output_format_)) {
-      ESP_LOGI(kTag, "waiting for buffer to become free");
       return;
     }
     has_prepared_output_ = true;
@@ -156,12 +155,9 @@ auto AudioDecoder::Process(const std::vector<InputStream>& inputs,
       // The codec ran out of input during processing. This is expected to
       // happen throughout the stream.
       if (res.second.error() == codecs::ICodec::Error::kOutOfInput) {
-        ESP_LOGI(kTag, "codec needs more data");
         has_input_remaining_ = false;
         has_samples_to_send_ = false;
         if (input->is_producer_finished()) {
-          ESP_LOGI(kTag, "codec is all done.");
-
           // We're out of data, and so is the producer. Nothing left to be done
           // with the input stream.
           input->mark_consumer_finished();

src/audio/fatfs_audio_input.cpp

@@ -134,7 +134,6 @@ auto FatfsAudioInput::Process(const std::vector<InputStream>& inputs,
   }
 
   if (!has_prepared_output_ && !output->prepare(*current_format_)) {
-    ESP_LOGI(kTag, "waiting for buffer to free up");
     return;
   }
   has_prepared_output_ = true;
@@ -156,7 +155,6 @@ auto FatfsAudioInput::Process(const std::vector<InputStream>& inputs,
   output->add(size);
 
   if (size < max_size || f_eof(&current_file_)) {
-    ESP_LOGI(kTag, "file finished. closing.");
     f_close(&current_file_);
     is_file_open_ = false;
     has_prepared_output_ = false;

src/audio/stream_info.cpp

@@ -30,6 +30,9 @@ void InputStream::consume(std::size_t bytes) const {
 
 void InputStream::mark_consumer_finished() const {
   raw_->info->is_consumer_finished = true;
+  if (is_producer_finished()) {
+    raw_->info->format = std::monostate();
+  }
 }
 
 bool InputStream::is_producer_finished() const {
@@ -71,6 +74,9 @@ cpp::span<std::byte> OutputStream::data() const {
 
 void OutputStream::mark_producer_finished() const {
   raw_->info->is_producer_finished = true;
+  if (is_consumer_finished()) {
+    raw_->info->format = std::monostate();
+  }
 }
 
 bool OutputStream::is_consumer_finished() const {