Community Translation - Support Multiple Frame Rates in One Frame Descriptor in a UVC Application – KBA228228

NaMo_1534561 · ‎May 24, 2020

Hello,

I would like to translate "Support Multiple Frame Rates in One Frame Descriptor in a UVC Application – KBA228228" into Japanese.

Please confirm to my work.

Best Regards,

Naoaki Morimoto

JennaJo · ‎May 25, 2020

Hello, Morimoto-san

Confirm to work to do.

Thanks,

Jenna

Jenna Jo

NaMo_1534561 · ‎May 31, 2020

Hello,

I translated following one into Japanese.

Please confirm below.

Support Multiple Frame Rates in One Frame Descriptor in a UVC Application – KBA228228

Best Regards,

Naoaki Morimoto

UVCアプリケーションの１つのフレームディスクリプタで複数のフレームレートをサポートする – KBA228228

バージョン 4

ChaitanyaV_61 が 2019/08/22 23:38 に作成。ChaitanyaV_61 が 2019/11/21 21:58 に変更。

Author: RoyL_01 Version: **

注意：

この記事では、UVCアプリケーションの1つのディスクリプタで複数のフレームレートをサポートする方法を示します。

1.対応するフレーム記述子を変更します。次のコードスニペットは、解像度1080pで30 fpsおよび60 fpsを定義しています。

1. 0x22, /* Descriptor size */

2. CX3_CS_INTRFC_DESCR, /* Descriptor type*/

3. 0x05, /* Subtype: frame interface*/

4. 0x01, /* Frame Descriptor Index: 1 */

5. 0x00, /* No Still image capture method supported */

6. 0x80,0x07, /* Width in pixel: 1920 */

7. 0x38,0x04, /* Height in pixel: 1080 */

8. 0x00,0x80,0x53,0x3b, /* Min bit rate (bits/s): 1920 x 1080 x 16 x 30 = 995328000 */

9. 0x00,0x00,0xa7,0x76, /* Max bit rate (bits/s): 1920 x 1080 x 16 x 30 = 0x76a70000 */

10. 0x00,0x48,0x3f,0x00, /* Maximum video or still frame size in bytes(Deprecated): 1920 x 1080 x 2 */

11. 0x15,0x16,0x05,0x00, /* Default frame interval (in 100ns units): (1/30)x10^7 */

12. 0x02, /* Frame interval type : No of discrete intervals */

13. 0x15,0x16,0x05,0x00, /* 30 fps */

14. 0x0a,0x8b,0x02,0x00, /* 60 fps */

2.Class-specific Video Streaming Input Header DescriptorとCyCx3USBSSConfigDscrのlength filedを変更します。

1. 0x56,0x00, /* Total size of Class specific VS descr */

1. 0xe9,0x00, /* Length of this descriptor and all sub descriptors */

3. 30fpsおよび60fpsのプローブ構造体を作成します。

1. /* UVC Probe Control Setting - 1080p_60fps*/

2. uint8_t const gl1080pProbeCtrl_60fps[CX3_UVC_MAX_PROBE_SETTING] = {

3. 0x00, 0x00, /* bmHint : No fixed parameters */

4. 0x01, /* Use 1st Video format index */

5. 0x01, /* Use 1st Video frame index */

6. 0x0a,0x8b,0x02,0x00, /* Desired frame interval in 100ns = (1/30)x10^7 */

7. 0x00, 0x00, /* Key frame rate in key frame/video frame units */

8. 0x00, 0x00, /* PFrame rate in PFrame / key frame units */

9. 0x00, 0x00, /* Compression quality control */

10. 0x00, 0x00, /* Window size for average bit rate */

11. 0x00, 0x00, /* Internal video streaming i/f latency in ms */

12. 0x00,0x48,0x3f,0x00, /* Max video frame size in bytes = 1920 x 1080 x 2 */

13. #ifdef CX3_UVC_1_0_SUPPORT

14. 0x00, 0x90, 0x00, 0x00 /* No. of bytes device can rx in single payload: 36KB */

15. #else

    16.     /* UVC 1.1 Probe Control has additional fields from UVC 1.0 */
    17.     0x00, 0x90, 0x00, 0x00,            /* No. of bytes device can rx in single payload: 36KB */
    18.     0x00, 0x60, 0xE3, 0x16,            /* Device Clock */
    19.     0x00,                              /* Framing Information - Ignored for uncompressed format*/
    20.     0x00,                              /* Preferred payload format version */
    21.     0x00,                              /* Minimum payload format version */
    22.     0x00                                /* Maximum payload format version */
    23. #endif
    24. };

1. /* UVC Probe Control Setting - 1080p_30fps*/

2. uint8_t const gl1080pProbeCtrl_30fps[CX3_UVC_MAX_PROBE_SETTING] = {

3. 0x00, 0x00, /* bmHint : No fixed parameters */

4. 0x01, /* Use 1st Video format index */

5. 0x01, /* Use 1st Video frame index */

6. 0x15,0x16,0x05,0x00, /* Desired frame interval in 100ns = (1/30)x10^7 */

7. 0x00, 0x00, /* Key frame rate in key frame/video frame units */

8. 0x00, 0x00, /* PFrame rate in PFrame / key frame units */

9. 0x00, 0x00, /* Compression quality control */

10. 0x00, 0x00, /* Window size for average bit rate */

11. 0x00, 0x00, /* Internal video streaming i/f latency in ms */

12. 0x00,0x48,0x3f,0x00, /* Max video frame size in bytes = 1920 x 1080 x 2 */

13. #ifdef CX3_UVC_1_0_SUPPORT

14. 0x00, 0x90, 0x00, 0x00 /* No. of bytes device can rx in single payload: 36KB */

15. #else

16. /* UVC 1.1 Probe Control has additional fields from UVC 1.0 */

17. 0x00, 0x90, 0x00, 0x00, /* No. of bytes device can rx in single payload: 36KB */

18. 0x00, 0x60, 0xE3, 0x16, /* Device Clock */

19. 0x00, /* Framing Information - Ignored for uncompressed format*/

20. 0x00, /* Preferred payload format version */

21. 0x00, /* Minimum payload format version */

22. 0x00 /* Maximum payload format version */

23. #endif

24. };

4.対応するプローブ構造体を返すように、「CyCx3UvcAppGetProbeControlData」ルーチンを変更します。

1. /*Returns the pointer to the Probe Control structure for the corresponding frame index.*/

2. uint8_t *

3. CyCx3UvcAppGetProbeControlData (

4. CyU3PUSBSpeed_t usbConType,

5. uint8_t frameIndex,

6. uint32_t glCurrentFrameInterval

7. )

8. {

9. uint32_t frame_fps = 10000000 / glCurrentFrameInterval;

10. if (usbConType == CY_U3P_SUPER_SPEED)

11. {

12. if (frameIndex == 1)

13. {

14. if(frame_fps == 30)

15. {

16. /* 1920 x 1080 @30.0 fps */

17. CyU3PDebugPrint(4,"\n Line:%d: Return 30 fps structure",__LINE__);

18. return ((uint8_t *) gl1080pProbeCtrl_30fps);

19. }

20. else if(frame_fps == 60)

21. { /* 1920 x 1080 @60.0 fps */

22. CyU3PDebugPrint(4,"\n Line:%d Return 60 fps structure",__LINE__);

23. return ((uint8_t *) gl1080pProbeCtrl_60fps);

24. }

25. }

26. }

27. else if (usbConType == CY_U3P_HIGH_SPEED)

28. {

29. }

30. else

31. {

32.

33. }

34. return NULL;

35. }

5. CyCx3UvcAppHandleSetCurReq関数を変更して、set_curコマンドを処理します。

1. /* Set Probe Control */

2. if (wValue == CX3_UVC_VS_PROBE_CONTROL)

3. {

4. glCurrentFrameIndex = glCommitCtrl[3];

5. #ifdef Two_frame_rate

6. glCurrentFrameInterval = ((uint32_t)glCommitCtrl[7] << 24) | ((uint32_t)glCommitCtrl[6] << 16) | ((uint32_t)glCommitCtrl[5] << 😎 | ((uint32_t)glCommitCtrl[4] << 0);

8. CyU3PDebugPrint(4,"\r\n Line:%d: glCurrentFrameInterval = 0x%x",__LINE__,glCurrentFrameInterval);

9. #endif

10. }

6. CyCx3UvcAppImageSensorSetVideoResolution関数を変更します。

1. /* Set the video resolution through this function. This function lists all the

2. * supported resolutions in SuperSpeed and HighSpeed. The frame index of resolutions

3. * supported in Still Capture can be different from the frame index of resolutions supported

4. * in Video streaming.

5. */

6. static void

7. CyCx3UvcAppImageSensorSetVideoResolution(

8. uint8_t resolution_index,

9. uint32_t frame_Interval

10. )

11. {

12. CyU3PReturnStatus_t status = CY_U3P_SUCCESS;

13. uint32_t frameRate= 10000000/frame_Interval;

14. switch (CyU3PUsbGetSpeed ())

15. {

16. case CY_U3P_SUPER_SPEED:

17. switch (resolution_index)

18. {

19. case 0x01:

20. {

21. if(frameRate == 30)

22. {

23. CyU3PDebugPrint(4,"\r\n Line:%d: Set 30 fps",__LINE__);

24. /* Write 1080pSettings */

25. #ifndef FX3_STREAMING

26. status = CyU3PMipicsiSetIntfParams (&OV5640_YUY2_1080p, CyFalse);

27. if (status != CY_U3P_SUCCESS)

28. {

29. CyU3PDebugPrint (4, "\n\rUSBStpCB:SetIntfParams SS1 Err = 0x%x", status);

30. }

31. #endif

32. CyCx3_ImageSensor_Set_1080p ();

33.

34.

35. }

36. else if (frameRate == 60)

37. {

38. CyU3PDebugPrint(4,"\r\n Line:%d: Set 60 fps",__LINE__);

39. /* Write 1080pSettings */

40. #ifndef FX3_STREAMING

41. status = CyU3PMipicsiSetIntfParams (&OV5640_YUY2_1080p, CyFalse);

42. if (status != CY_U3P_SUCCESS)

43. {

44. CyU3PDebugPrint (4, "\n\rUSBStpCB:SetIntfParams SS1 Err = 0x%x", status);

45. }

46. #endif

47. CyCx3_ImageSensor_Set_1080p ();

48.

49.

50. }

51.

52.

53. }

54. break;

55.

56.

57. }

58. break;

59.

60.

61. case CY_U3P_HIGH_SPEED:

62. switch (resolution_index)

63. {

64.

65.

66.

67.

68. }

69. break;

70. }

71. }

7.プロジェクトをビルドし、テストのためにイメージファイルをUVCデバイスにダウンロードします。