Integrate OS guessing quirk into uac2_speaker_fb example.

examples/device/uac2_speaker_fb/src/usb_descriptors.c

@@ -28,6 +28,10 @@
 #include "usb_descriptors.h"
 #include "common_types.h"
 
+#ifdef CFG_QUIRK_OS_GUESSING
+#include "quirk_os_guessing.h"
+#endif
+
 /* A combination of interfaces must have a unique product id, since PC will save device driver after the first plug.
  * Same VID/PID with different interface e.g MSC (first), then CDC (later) will possibly cause system error on PC.
  *
@@ -45,7 +49,7 @@ tusb_desc_device_t const desc_device =
 {
     .bLength            = sizeof(tusb_desc_device_t),
     .bDescriptorType    = TUSB_DESC_DEVICE,
-    .bcdUSB             = 0x0200,
+    .bcdUSB             = 0x0201,
 
     // Use Interface Association Descriptor (IAD) for Audio
     // As required by USB Specs IAD's subclass must be common class (2) and protocol must be IAD (1)
@@ -69,6 +73,9 @@ tusb_desc_device_t const desc_device =
 // Application return pointer to descriptor
 uint8_t const * tud_descriptor_device_cb(void)
 {
+#if CFG_QUIRK_OS_GUESSING
+  quirk_os_guessing_desc_device_cb();
+#endif
   return (uint8_t const *)&desc_device;
 }
 
@@ -144,7 +151,7 @@ uint8_t const * tud_hid_descriptor_report_cb(uint8_t itf)
   #define EPNUM_DEBUG       0x02
 #endif
 
-uint8_t const desc_configuration[] =
+uint8_t const desc_configuration_default[] =
 {
     // Config number, interface count, string index, total length, attribute, power in mA
     TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, 0x00, 100),
@@ -158,13 +165,63 @@ uint8_t const desc_configuration[] =
 #endif
 };
 
+#if CFG_QUIRK_OS_GUESSING
+// OS X needs 3 bytes feedback endpoint on FS
+uint8_t const desc_configuration_osx_fs[] =
+{
+    // Config number, interface count, string index, total length, attribute, power in mA
+    TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, 0x00, 100),
+
+    // Interface number, string index, byte per sample, bit per sample, EP Out, EP size, EP feedback, feedback EP size,
+    TUD_AUDIO_SPEAKER_STEREO_FB_DESCRIPTOR(0, 4, CFG_TUD_AUDIO_FUNC_1_N_BYTES_PER_SAMPLE_RX, CFG_TUD_AUDIO_FUNC_1_RESOLUTION_RX, EPNUM_AUDIO_OUT, CFG_TUD_AUDIO_FUNC_1_EP_OUT_SZ_MAX, EPNUM_AUDIO_FB | 0x80, 3),
+
+#if CFG_AUDIO_DEBUG
+    // Interface number, string index, protocol, report descriptor len, EP In address, size & polling interval
+    TUD_HID_DESCRIPTOR(ITF_NUM_DEBUG, 0, HID_ITF_PROTOCOL_NONE, sizeof(desc_hid_report), EPNUM_DEBUG | 0x80, CFG_TUD_HID_EP_BUFSIZE, 7)
+#endif
+};
+#endif
+
 // Invoked when received GET CONFIGURATION DESCRIPTOR
 // Application return pointer to descriptor
 // Descriptor contents must exist long enough for transfer to complete
 uint8_t const * tud_descriptor_configuration_cb(uint8_t index)
 {
   (void)index; // for multiple configurations
-  return desc_configuration;
+
+#if CFG_QUIRK_OS_GUESSING
+  quirk_os_guessing_desc_configuration_cb();
+  if(tud_speed_get() == TUSB_SPEED_FULL && quirk_os_guessing_get() == QUIRK_OS_GUESSING_OSX) {
+    return desc_configuration_osx_fs;
+  }
+#endif
+  return desc_configuration_default;
+}
+
+//--------------------------------------------------------------------+
+// BOS Descriptor, required for OS guessing quirk
+//--------------------------------------------------------------------+
+
+#define TUD_BOS_USB20_EXT_DESC_LEN  7
+
+#define BOS_TOTAL_LEN      (TUD_BOS_DESC_LEN + TUD_BOS_USB20_EXT_DESC_LEN)
+
+// BOS Descriptor is required for webUSB
+uint8_t const desc_bos[] =
+{
+  // total length, number of device caps
+  TUD_BOS_DESCRIPTOR(BOS_TOTAL_LEN, 1),
+
+  // USB 2.0 Extension Descriptor
+  0x07, TUSB_DESC_DEVICE_CAPABILITY, DEVICE_CAPABILITY_USB20_EXTENSION, 0x00, 0x00, 0x00,0x00
+};
+
+uint8_t const * tud_descriptor_bos_cb(void)
+{
+#if CFG_QUIRK_OS_GUESSING
+  quirk_os_guessing_desc_bos_cb();
+#endif
+  return desc_bos;
 }
 
 //--------------------------------------------------------------------+
@@ -197,6 +254,10 @@ uint16_t const *tud_descriptor_string_cb(uint8_t index, uint16_t langid) {
   (void) langid;
   size_t chr_count;
 
+#if CFG_QUIRK_OS_GUESSING
+  quirk_os_guessing_desc_string_cb();
+#endif
+
   switch ( index ) {
     case STRID_LANGID:
       memcpy(&_desc_str[1], string_desc_arr[0], 2);