stream : add "single_segment" option

Force the entire audio chunk to be transcribed into a single segment

examples/stream/stream.cpp

@@ -328,6 +328,7 @@ int main(int argc, char ** argv) {
             wparams.print_timestamps     = !params.no_timestamps;
             wparams.translate            = params.translate;
             wparams.no_context           = params.no_context;
+            wparams.single_segment       = true;
             wparams.language             = params.language.c_str();
             wparams.n_threads            = params.n_threads;
 

whisper.cpp

@@ -2386,6 +2386,7 @@ struct whisper_full_params whisper_full_default_params(enum whisper_sampling_str
 
                     /*.translate            =*/ false,
                     /*.no_context           =*/ false,
+                    /*.single_segment       =*/ false,
                     /*.print_special_tokens =*/ false,
                     /*.print_progress       =*/ true,
                     /*.print_realtime       =*/ false,
@@ -2426,6 +2427,7 @@ struct whisper_full_params whisper_full_default_params(enum whisper_sampling_str
 
                     /*.translate            =*/ false,
                     /*.no_context           =*/ false,
+                    /*.single_segment       =*/ false,
                     /*.print_special_tokens =*/ false,
                     /*.print_progress       =*/ true,
                     /*.print_realtime       =*/ false,
@@ -2687,10 +2689,10 @@ int whisper_full(
                         }
                     }
 
-                    // TODO: TMP TO MAKE STREAM WORK ON RPI4 ===
+                    if (params.single_segment) {
                         result_len = i + 1;
                         seek_delta = 100*WHISPER_CHUNK_SIZE;
-                    // =========================================
+                    }
 
                     break;
                 }

whisper.h

@@ -194,6 +194,7 @@ extern "C" {
 
         bool translate;
         bool no_context;
+        bool single_segment; // force single segment output (useful for streaming)
         bool print_special_tokens;
         bool print_progress;
         bool print_realtime;