From 9bcab53c2cb0b52baf8bc0c768887428ac87fbff Mon Sep 17 00:00:00 2001
From: kkitayam <45088311+kkitayam@users.noreply.github.com>
Date: Wed, 29 Sep 2021 22:53:26 +0900
Subject: Implement frame rate settings

---
 examples/device/video_capture/src/main.c            | 13 ++++++++++---
 examples/device/video_capture/src/usb_descriptors.h |  2 +-
 2 files changed, 11 insertions(+), 4 deletions(-)

(limited to 'examples')

diff --git a/examples/device/video_capture/src/main.c b/examples/device/video_capture/src/main.c
index 6f47a1841..a38791365 100644
--- a/examples/device/video_capture/src/main.c
+++ b/examples/device/video_capture/src/main.c
@@ -110,11 +110,11 @@ static unsigned char const *frames[] = {
 };
 static unsigned current_frame = 0;
 static unsigned tx_busy = 0;
+static unsigned interval_ms = 1000 / FRAME_RATE;
 
 void video_task(void)
 {
   static unsigned start_ms = 0;
-  static unsigned interval_ms = 1000 / FRAME_RATE;
   static unsigned already_sent = 0;
 
   if (!tud_video_n_streaming(0, 0)) {
@@ -137,7 +137,7 @@ void video_task(void)
   tud_video_n_frame_xfer(0, 0, (void*)frames[current_frame], FRAME_WIDTH * FRAME_HEIGHT * 12/8);
 }
 
-int tud_video_frame_xfer_complete_cb(uint_fast8_t ctl_idx, uint_fast8_t stm_idx)
+void tud_video_frame_xfer_complete_cb(uint_fast8_t ctl_idx, uint_fast8_t stm_idx)
 {
   (void)ctl_idx; (void)stm_idx;
   tx_busy = 0;
@@ -145,7 +145,14 @@ int tud_video_frame_xfer_complete_cb(uint_fast8_t ctl_idx, uint_fast8_t stm_idx)
   ++current_frame;
   if (current_frame == sizeof(frames)/sizeof(frames[0]))
     current_frame = 0;
-  return 0;
+}
+
+int tud_video_commit_cb(uint_fast8_t ctl_idx, uint_fast8_t stm_idx,
+			video_probe_and_commit_control_t const *parameters)
+{
+  /* convert unit to ms from 100 ns */
+  interval_ms = parameters->dwFrameInterval / 10000;
+  return VIDEO_NO_ERROR;
 }
 
 //--------------------------------------------------------------------+
diff --git a/examples/device/video_capture/src/usb_descriptors.h b/examples/device/video_capture/src/usb_descriptors.h
index 867e9af42..eff57f1fa 100644
--- a/examples/device/video_capture/src/usb_descriptors.h
+++ b/examples/device/video_capture/src/usb_descriptors.h
@@ -99,7 +99,7 @@ enum {
           TUD_VIDEO_DESC_CS_VS_FRM_UNCOMPR_CONT(/*bFrameIndex */1, 0, _width, _height, \
               _width * _height * 12, _width * _height * 12 * _fps, \
               _width * _height * 12, \
-              (10000000/_fps), (10000000/_fps), (10000000/_fps)*_fps, (10000000/_fps)), \
+              (10000000/_fps), (10000000/_fps), 10000000, 100000), \
           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), \
-- 
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