diff --git a/examples/device/video_capture/src/usb_descriptors.c b/examples/device/video_capture/src/usb_descriptors.c index 8e54d3afd..90a6b27a2 100644 --- a/examples/device/video_capture/src/usb_descriptors.c +++ b/examples/device/video_capture/src/usb_descriptors.c @@ -109,6 +109,10 @@ uint8_t const* tud_descriptor_device_cb(void) { #define EPNUM_VIDEO_IN 0x81 #endif +#if defined(CFG_EXAMPLE_VIDEO_READONLY) && !defined(CFG_EXAMPLE_VIDEO_DISABLE_MJPEG) + #define USE_MJPEG +#endif + // For mcus that does not have enough SRAM for frame buffer, we use fixed frame data. // To further reduce the size, we use MJPEG format instead of YUY2. // Select interface descriptor and length accordingly. @@ -197,8 +201,15 @@ typedef struct TU_ATTR_PACKED { typedef struct TU_ATTR_PACKED { tusb_desc_interface_t itf; tusb_desc_video_streaming_input_header_1byte_t header; + +#ifdef USE_MJPEG + tusb_desc_video_format_mjpeg_t format; + tusb_desc_video_frame_mjpeg_continuous_t frame; +#else tusb_desc_video_format_uncompressed_t format; tusb_desc_video_frame_uncompressed_continuous_t frame; +#endif + tusb_desc_video_streaming_color_matching_t color; tusb_desc_endpoint_t ep; } uvc_streaming_desc_t; @@ -316,14 +327,22 @@ const uvc_cfg_desc_t config_desc = { .bmaControls = { 0 } }, .format = { +#ifdef USE_MJPEG + .bLength = sizeof(tusb_desc_video_format_mjpeg_t), + .bDescriptorType = TUSB_DESC_CS_INTERFACE, + .bDescriptorSubType = VIDEO_CS_ITF_VS_FORMAT_MJPEG, + .bFormatIndex = 1, // 1-based index + .bNumFrameDescriptors = 1, + .bmFlags = 0, +#else .bLength = sizeof(tusb_desc_video_format_uncompressed_t), .bDescriptorType = TUSB_DESC_CS_INTERFACE, .bDescriptorSubType = VIDEO_CS_ITF_VS_FORMAT_UNCOMPRESSED, - .bFormatIndex = 1, // 1-based index .bNumFrameDescriptors = 1, .guidFormat = { TUD_VIDEO_GUID_YUY2 }, .bBitsPerPixel = 16, +#endif .bDefaultFrameIndex = 1, .bAspectRatioX = 0, .bAspectRatioY = 0, @@ -331,9 +350,15 @@ const uvc_cfg_desc_t config_desc = { .bCopyProtect = 0 }, .frame = { +#ifdef USE_MJPEG + .bLength = sizeof(tusb_desc_video_frame_mjpeg_continuous_t), + .bDescriptorType = TUSB_DESC_CS_INTERFACE, + .bDescriptorSubType = VIDEO_CS_ITF_VS_FRAME_MJPEG, +#else .bLength = sizeof(tusb_desc_video_frame_uncompressed_continuous_t), .bDescriptorType = TUSB_DESC_CS_INTERFACE, .bDescriptorSubType = VIDEO_CS_ITF_VS_FRAME_UNCOMPRESSED, +#endif .bFrameIndex = 1, // 1-based index .bmCapabilities = 0, diff --git a/src/class/video/video.h b/src/class/video/video.h index 162d4e4c4..bed8eeecf 100644 --- a/src/class/video/video.h +++ b/src/class/video/video.h @@ -405,7 +405,7 @@ typedef struct TU_ATTR_PACKED { uint8_t bDescriptorSubType; uint8_t bFormatIndex; uint8_t bNumFrameDescriptors; - uint8_t bmFlags; + uint8_t bmFlags; // Bit 0: fixed size samples (1 = yes) uint8_t bDefaultFrameIndex; uint8_t bAspectRatioX; uint8_t bAspectRatioY; @@ -415,7 +415,15 @@ typedef struct TU_ATTR_PACKED { // MJPEG payload specs: 3.1.2 frame descriptor (same as uncompressed) typedef tusb_desc_video_frame_uncompressed_t tusb_desc_video_frame_mjpeg_t; +typedef tusb_desc_video_frame_uncompressed_1int_t tusb_desc_video_frame_mjpeg_1int_t; +typedef tusb_desc_video_frame_uncompressed_2int_t tusb_desc_video_frame_mjpeg_2int_t; +typedef tusb_desc_video_frame_uncompressed_3int_t tusb_desc_video_frame_mjpeg_3int_t; +typedef tusb_desc_video_frame_uncompressed_4int_t tusb_desc_video_frame_mjpeg_4int_t; +// continuous = 3 intervals: min, max, step +typedef tusb_desc_video_frame_mjpeg_3int_t tusb_desc_video_frame_mjpeg_continuous_t; + +//------------- DV -------------// // DV payload specs: 3.1.1 typedef struct TU_ATTR_PACKED { uint8_t bLength;