Remove Hardcoded interface numbers from video descriptors

Removing the Hardcoded interface numbers from the video descriptors allow the user to add other interfaces before or after the Video Control Interface and Video Streaming Interface

Author: Lan-Hekary

examples/device/video_capture/src/usb_descriptors.h

@@ -38,7 +38,7 @@
 #define FRAME_RATE    10
 
 enum {
-  ITF_NUM_VIDEO_CONTROL = 0,
+  ITF_NUM_VIDEO_CONTROL,
   ITF_NUM_VIDEO_STREAMING,
   ITF_NUM_TOTAL
 };
@@ -74,19 +74,19 @@ enum {
   TUD_VIDEO_DESC_CS_VS_FMT_UNCOMPR(_fmtidx, _numfmtdesc, TUD_VIDEO_GUID_I420, 12, _frmidx, _asrx, _asry, _interlace, _cp)
 
 #define TUD_VIDEO_CAPTURE_DESCRIPTOR(_stridx, _epin, _width, _height, _fps, _epsize) \
-  TUD_VIDEO_DESC_IAD(ITF_NUM_VIDEO_CONTROL, ITF_NUM_TOTAL, _stridx), \
+  TUD_VIDEO_DESC_IAD(ITF_NUM_VIDEO_CONTROL, /* 2 Interfaces */ 0x02, _stridx), \
   /* Video control 0 */ \
   TUD_VIDEO_DESC_STD_VC(ITF_NUM_VIDEO_CONTROL, 0, _stridx), \
     TUD_VIDEO_DESC_CS_VC( /* UVC 1.5*/ 0x0150, \
          /* wTotalLength - bLength */ \
          TUD_VIDEO_DESC_CAMERA_TERM_LEN + TUD_VIDEO_DESC_OUTPUT_TERM_LEN, \
-         UVC_CLOCK_FREQUENCY, 1), \
+         UVC_CLOCK_FREQUENCY, ITF_NUM_VIDEO_STREAMING), \
       TUD_VIDEO_DESC_CAMERA_TERM(UVC_ENTITY_CAP_INPUT_TERMINAL, 0, 0,\
                                  /*wObjectiveFocalLengthMin*/0, /*wObjectiveFocalLengthMax*/0,\
                                  /*wObjectiveFocalLength*/0, /*bmControls*/0), \
       TUD_VIDEO_DESC_OUTPUT_TERM(UVC_ENTITY_CAP_OUTPUT_TERMINAL, VIDEO_TT_STREAMING, 0, 1, 0), \
   /* Video stream alt. 0 */ \
-  TUD_VIDEO_DESC_STD_VS( 1, 0, 0, 0), \
+  TUD_VIDEO_DESC_STD_VS(ITF_NUM_VIDEO_STREAMING, 0, 0, _stridx), \
     /* Video stream header for without still image capture */ \
     TUD_VIDEO_DESC_CS_VS_INPUT( /*bNumFormats*/1, \
         /*wTotalLength - bLength */\
@@ -106,7 +106,7 @@ enum {
             (10000000/_fps), (10000000/_fps), (10000000/_fps)*_fps, (10000000/_fps)), \
         TUD_VIDEO_DESC_CS_VS_COLOR_MATCHING(VIDEO_COLOR_PRIMARIES_BT709, VIDEO_COLOR_XFER_CH_BT709, VIDEO_COLOR_COEF_SMPTE170M), \
   /* VS alt 1 */\
-  TUD_VIDEO_DESC_STD_VS(1, 1, 1, 0), \
+  TUD_VIDEO_DESC_STD_VS(ITF_NUM_VIDEO_STREAMING, 1, 1, _stridx), \
     /* EP */ \
     TUD_VIDEO_DESC_EP_ISO(_epin, _epsize, 1)