bump up frame rate to 30fps in example

Author: hathach

examples/Video/video_capture/video_capture.ino

@@ -17,7 +17,7 @@
 //--------------------------------------------------------------------+
 #define FRAME_WIDTH   128
 #define FRAME_HEIGHT  96
-#define FRAME_RATE    10
+#define FRAME_RATE    30
 
 uint8_t const desc_video[] = {
   TUD_VIDEO_CAPTURE_DESCRIPTOR_UNCOMPR_BULK(0, 0x80, FRAME_WIDTH, FRAME_HEIGHT, FRAME_RATE, 64)
@@ -41,7 +41,6 @@ static void fill_color_bar(uint8_t* buffer, unsigned start_position);
 
 void setup() {
   Serial.begin(115200);
-//  Serial.end();
   usb_video.begin();
 }
 

src/arduino/video/Adafruit_USBD_Video.cpp

@@ -34,6 +34,7 @@ Adafruit_USBD_Video::Adafruit_USBD_Video(uint8_t const *desc_itf,
                                          size_t desc_len) {
   _desc_itf = desc_itf;
   _desc_len = desc_len;
+  _vc_id = 0;
 }
 
 bool Adafruit_USBD_Video::begin() {
@@ -57,4 +58,12 @@ uint16_t Adafruit_USBD_Video::getInterfaceDescriptor(uint8_t itfnum,
   return _desc_len;
 }
 
+//--------------------------------------------------------------------+
+// API
+//--------------------------------------------------------------------+
+
+// bool Adafruit_USBD_Video::isStreaming(uint8_t stream_idx) {
+//   return tud_video_n_streaming(_vc_id, stream_idx);
+// }
+
 #endif

src/arduino/video/Adafruit_USBD_Video.h

@@ -35,13 +35,17 @@ class Adafruit_USBD_Video : public Adafruit_USBD_Interface {
 
   bool begin();
 
+  //------------- API -------------//
+  //  bool isStreaming(uint8_t stream_idx);
+
   // from Adafruit_USBD_Interface
   virtual uint16_t getInterfaceDescriptor(uint8_t itfnum, uint8_t *buf,
                                           uint16_t bufsize);
 
 private:
   uint8_t const *_desc_itf;
   size_t _desc_len;
+  uint8_t _vc_id;
 };
 
 #endif