Add tail_paddings to Whisper C API. (#886)

 cmake_minimum_required(VERSION 3.13 FATAL_ERROR)
 project(sherpa-onnx)
 
-set(SHERPA_ONNX_VERSION "1.9.24")
+set(SHERPA_ONNX_VERSION "1.9.25")
 
 # Disable warning about
 #

@@ -29,6 +29,7 @@ function createOfflineRecognizer() {
       decoder: '',
       language: '',
       task: '',
+      tailPaddings: -1,
     },
     tdnn: {
       model: '',

@@ -29,6 +29,7 @@ function createOfflineRecognizer() {
       decoder: '',
       language: '',
       task: '',
+      tailPaddings: -1,
     },
     tdnn: {
       model: '',

@@ -32,6 +32,7 @@ function createOfflineRecognizer() {
       decoder: '',
       language: '',
       task: '',
+      tailPaddings: -1,
     },
     tdnn: {
       model: '',

@@ -29,6 +29,7 @@ function createOfflineRecognizer() {
       decoder: './sherpa-onnx-whisper-tiny.en/tiny.en-decoder.int8.onnx',
       language: '',
       task: 'transcribe',
+      tailPaddings: -1,
     },
     tdnn: {
       model: '',

@@ -301,6 +301,7 @@ namespace SherpaOnnx
       Decoder = "";
       Language = "";
       Task = "transcribe";
+      TailPaddings = -1;
     }
     [MarshalAs(UnmanagedType.LPStr)]
     public string Encoder;
@@ -313,6 +314,8 @@ namespace SherpaOnnx
 
     [MarshalAs(UnmanagedType.LPStr)]
     public string Task;
+
+    public int TailPaddings;
   }
 
   [StructLayout(LayoutKind.Sequential)]

@@ -340,6 +340,7 @@ type OfflineWhisperModelConfig struct {
 	Decoder      string
 	Language     string
 	Task         string
+	TailPaddings int
 }
 
 type OfflineTdnnModelConfig struct {
@@ -441,6 +442,8 @@ func NewOfflineRecognizer(config *OfflineRecognizerConfig) *OfflineRecognizer {
 	c.model_config.whisper.task = C.CString(config.ModelConfig.Whisper.Task)
 	defer C.free(unsafe.Pointer(c.model_config.whisper.task))
 
+	c.model_config.whisper.tail_paddings = C.int(config.ModelConfig.Whisper.TailPaddings)
+
 	c.model_config.tdnn.model = C.CString(config.ModelConfig.Tdnn.Model)
 	defer C.free(unsafe.Pointer(c.model_config.tdnn.model))
 

@@ -74,7 +74,8 @@ static SherpaOnnxOfflineWhisperModelConfig GetOfflineWhisperModelConfig(
   SHERPA_ONNX_ASSIGN_ATTR_STR(encoder, encoder);
   SHERPA_ONNX_ASSIGN_ATTR_STR(decoder, decoder);
   SHERPA_ONNX_ASSIGN_ATTR_STR(language, language);
-  SHERPA_ONNX_ASSIGN_ATTR_STR(task, languagek);
+  SHERPA_ONNX_ASSIGN_ATTR_STR(task, task);
+  SHERPA_ONNX_ASSIGN_ATTR_INT32(tail_paddings, tailPaddings);
 
   return c;
 }

@@ -341,6 +341,9 @@ SherpaOnnxOfflineRecognizer *CreateOfflineRecognizer(
     recognizer_config.model_config.whisper.task = "transcribe";
   }
 
+  recognizer_config.model_config.whisper.tail_paddings =
+      SHERPA_ONNX_OR(config->model_config.whisper.tail_paddings, -1);
+
   recognizer_config.model_config.tdnn.model =
       SHERPA_ONNX_OR(config->model_config.tdnn.model, "");
 

@@ -359,6 +359,7 @@ SHERPA_ONNX_API typedef struct SherpaOnnxOfflineWhisperModelConfig {
   const char *decoder;
   const char *language;
   const char *task;
+  int32_t tail_paddings;
 } SherpaOnnxOfflineWhisperModelConfig;
 
 SHERPA_ONNX_API typedef struct SherpaOnnxOfflineTdnnModelConfig {

@@ -314,13 +314,15 @@ func sherpaOnnxOfflineWhisperModelConfig(
   encoder: String = "",
   decoder: String = "",
   language: String = "",
-  task: String = "transcribe"
+  task: String = "transcribe",
+  tailPaddings: Int = -1
 ) -> SherpaOnnxOfflineWhisperModelConfig {
   return SherpaOnnxOfflineWhisperModelConfig(
     encoder: toCPointer(encoder),
     decoder: toCPointer(decoder),
     language: toCPointer(language),
-    task: toCPointer(task)
+    task: toCPointer(task),
+    tail_paddings: Int32(tailPaddings)
   )
 }
 

@@ -453,6 +453,8 @@ function initSherpaOnnxOfflineWhisperModelConfig(config, Module) {
   Module.setValue(ptr + 12, buffer + offset, 'i8*');
   offset += taskLen;
 
+  Module.setValue(ptr + 16, config.tailPaddings || -1, 'i32');
+
   return {
     buffer: buffer, ptr: ptr, len: len,
   }

@@ -14,7 +14,7 @@ static_assert(sizeof(SherpaOnnxOfflineTransducerModelConfig) == 3 * 4, "");
 static_assert(sizeof(SherpaOnnxOfflineParaformerModelConfig) == 4, "");
 
 static_assert(sizeof(SherpaOnnxOfflineNemoEncDecCtcModelConfig) == 4, "");
-static_assert(sizeof(SherpaOnnxOfflineWhisperModelConfig) == 4 * 4, "");
+static_assert(sizeof(SherpaOnnxOfflineWhisperModelConfig) == 5 * 4, "");
 static_assert(sizeof(SherpaOnnxOfflineTdnnModelConfig) == 4, "");
 static_assert(sizeof(SherpaOnnxOfflineLMConfig) == 2 * 4, "");
 
@@ -80,6 +80,7 @@ void PrintOfflineRecognizerConfig(SherpaOnnxOfflineRecognizerConfig *config) {
   fprintf(stdout, "decoder: %s\n", whisper->decoder);
   fprintf(stdout, "language: %s\n", whisper->language);
   fprintf(stdout, "task: %s\n", whisper->task);
+  fprintf(stdout, "tail_paddings: %d\n", whisper->tail_paddings);
 
   fprintf(stdout, "----------offline tdnn model config----------\n");
   fprintf(stdout, "model: %s\n", tdnn->model);