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wireshark/epan/dissectors/packet-usb-video.c

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/* packet-usb-video.c
*
* Forked from packet-usb-masstorage.c 35224 2010-12-20 05:35:29Z guy
* which was authored by Ronnie Sahlberg (2006)
*
* usb video dissector
* Steven J. Magnani 2013
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/expert.h>
#include "packet-usb.h"
void proto_register_usb_vid(void);
void proto_reg_handoff_usb_vid(void);
/* References are to sections in USB Video Class specifications -
* specifically V1.5, but versions have tended to keep
* the same numbering (as of this writing).
*
* http://www.usb.org/developers/devclass_docs/USB_Video_Class_1_5.zip
*/
/* Table 2-1. Interrupt originators */
#define INT_VIDEOCONTROL 1
#define INT_VIDEOSTREAMING 2
#define INT_ORIGINATOR_MASK 0xF
/* Table 2-2. Video Control Status Packet bAttribute */
#define CONTROL_CHANGE_VALUE 0x00
#define CONTROL_CHANGE_INFO 0x01
#define CONTROL_CHANGE_FAILURE 0x02
#define CONTROL_CHANGE_MIN 0x03 /* UVC 1.5+ */
#define CONTROL_CHANGE_MAX 0x04 /* UVC 1.5+ */
/* A.2 Video Interface Subclass Codes */
#define SC_UNDEFINED 0
#define SC_VIDEOCONTROL 1
#define SC_VIDEOSTREAMING 2
#define SC_VIDEO_INTERFACE_COLLECTION 3
/* A.4. Video Class-Specific Descriptor Types */
#define CS_INTERFACE 0x24
#define CS_ENDPOINT 0x25
/* A.5 Video Class-Specific VC Interface Descriptor Subtypes */
#define VC_HEADER 1
#define VC_INPUT_TERMINAL 2
#define VC_OUTPUT_TERMINAL 3
#define VC_SELECTOR_UNIT 4
#define VC_PROCESSING_UNIT 5
#define VC_EXTENSION_UNIT 6
#define VC_ENCODING_UNIT 7
/* A.6 Video Class-Specific VS Interface Descriptor Subtypes */
#define VS_UNDEFINED 0x00
#define VS_INPUT_HEADER 0x01
#define VS_OUTPUT_HEADER 0x02
#define VS_STILL_IMAGE_FRAME 0x03
#define VS_FORMAT_UNCOMPRESSED 0x04
#define VS_FRAME_UNCOMPRESSED 0x05
#define VS_FORMAT_MJPEG 0x06
#define VS_FRAME_MJPEG 0x07
#define VS_FORMAT_MPEG1 0x08 /* Pre-UVC 1.1 */
#define VS_FORMAT_MPEG2PS 0x09 /* Pre-UVC 1.1 */
#define VS_FORMAT_MPEG2TS 0x0A
#define VS_FORMAT_MPEG4SL 0x0B /* Pre-UVC 1.1 */
#define VS_FORMAT_DV 0x0C
#define VS_COLORFORMAT 0x0D
#define VS_FORMAT_VENDOR 0x0E /* Pre-UVC 1.1 */
#define VS_FRAME_VENDOR 0x0F /* Pre-UVC 1.1 */
#define VS_FORMAT_FRAME_BASED 0x10
#define VS_FRAME_FRAME_BASED 0x11
#define VS_FORMAT_STREAM_BASED 0x12
#define VS_FORMAT_H264 0x13 /* UVC 1.5 */
#define VS_FRAME_H264 0x14 /* UVC 1.5 */
#define VS_FORMAT_H264_SIMULCAST 0x15 /* UVC 1.5 */
#define VS_FORMAT_VP8 0x16 /* UVC 1.5 */
#define VS_FRAME_VP8 0x17 /* UVC 1.5 */
#define VS_FORMAT_VP8_SIMULCAST 0x18 /* UVC 1.5 */
/* A.7 Video Class-Specific Endpoint Descriptor Subtypes */
#define EP_INTERRUPT 0x03
/* A.9.1 Video Control Interface Control Selectors */
#define VC_CONTROL_UNDEFINED 0x00
#define VC_VIDEO_POWER_MODE_CONTROL 0x01
#define VC_REQUEST_ERROR_CODE_CONTROL 0x02
#define VC_REQUEST_INDICATE_HOST_CLOCK_CONTROL 0x03 /* Pre-UVC 1.1 */
/* A.9.3 Selector Unit Control Selectors */
#define SU_CONTROL_UNDEFINED 0x00
#define SU_INPUT_SELECT_CONTROL 0x01
/* A.9.4 Camera Terminal Control Selectors */
#define CT_CONTROL_UNDEFINED 0x00
#define CT_SCANNING_MODE_CONTROL 0x01
#define CT_AE_MODE_CONTROL 0x02
#define CT_AE_PRIORITY_CONTROL 0x03
#define CT_EXPOSURE_TIME_ABSOLUTE_CONTROL 0x04
#define CT_EXPOSURE_TIME_RELATIVE_CONTROL 0x05
#define CT_FOCUS_ABSOLUTE_CONTROL 0x06
#define CT_FOCUS_RELATIVE_CONTROL 0x07
#define CT_FOCUS_AUTO_CONTROL 0x08
#define CT_IRIS_ABSOLUTE_CONTROL 0x09
#define CT_IRIS_RELATIVE_CONTROL 0x0A
#define CT_ZOOM_ABSOLUTE_CONTROL 0x0B
#define CT_ZOOM_RELATIVE_CONTROL 0x0C
#define CT_PANTILT_ABSOLUTE_CONTROL 0x0D
#define CT_PANTILT_RELATIVE_CONTROL 0x0E
#define CT_ROLL_ABSOLUTE_CONTROL 0x0F
#define CT_ROLL_RELATIVE_CONTROL 0x10
#define CT_PRIVACY_CONTROL 0x11
#define CT_FOCUS_SIMPLE_CONTROL 0x12 /* UVC 1.5 */
#define CT_WINDOW_CONTROL 0x13 /* UVC 1.5 */
#define CT_REGION_OF_INTEREST_CONTROL 0x14 /* UVC 1.5 */
/* A.9.5 Processing Unit Control Selectors */
#define PU_CONTROL_UNDEFINED 0x00
#define PU_BACKLIGHT_COMPENSATION_CONTROL 0x01
#define PU_BRIGHTNESS_CONTROL 0x02
#define PU_CONTRAST_CONTROL 0x03
#define PU_GAIN_CONTROL 0x04
#define PU_POWER_LINE_FREQUENCY_CONTROL 0x05
#define PU_HUE_CONTROL 0x06
#define PU_SATURATION_CONTROL 0x07
#define PU_SHARPNESS_CONTROL 0x08
#define PU_GAMMA_CONTROL 0x09
#define PU_WHITE_BALANCE_TEMPERATURE_CONTROL 0x0A
#define PU_WHITE_BALANCE_TEMPERATURE_AUTO_CONTROL 0x0B
#define PU_WHITE_BALANCE_COMPONENT_CONTROL 0x0C
#define PU_WHITE_BALANCE_COMPONENT_AUTO_CONTROL 0x0D
#define PU_DIGITAL_MULTIPLIER_CONTROL 0x0E
#define PU_DIGITAL_MULTIPLIER_LIMIT_CONTROL 0x0F
#define PU_HUE_AUTO_CONTROL 0x10
#define PU_ANALOG_VIDEO_STANDARD_CONTROL 0x11
#define PU_ANALOG_LOCK_STATUS_CONTROL 0x12
#define PU_CONTRAST_AUTO_CONTROL 0x13
/* A.9.7 VideoStreaming Interface Control Selectors */
#define VS_CONTROL_UNDEFINED 0x00
#define VS_PROBE_CONTROL 0x01
#define VS_COMMIT_CONTROL 0x02
#define VS_STILL_PROBE_CONTROL 0x03
#define VS_STILL_COMMIT_CONTROL 0x04
#define VS_STILL_IMAGE_TRIGGER_CONTROL 0x05
#define VS_STREAM_ERROR_CODE_CONTROL 0x06
#define VS_GENERATE_KEY_FRAME_CONTROL 0x07
#define VS_UPDATE_FRAME_SEGMENT_CONTROL 0x08
#define VS_SYNCH_DELAY_CONTROL 0x09
/* Appendix B Terminal Types */
#define TT_VENDOR_SPECIFIC 0x100
#define TT_STREAMING 0x101
#define ITT_VENDOR_SPECIFIC 0x200
#define ITT_CAMERA 0x201
#define ITT_MEDIA_TRANSPORT_INPUT 0x202
#define OTT_VENDOR_SPECIFIC 0x300
#define OTT_DISPLAY 0x301
#define OTT_MEDIA_TRANSPORT_OUTPUT 0x302
#define EXTERNAL_VENDOR_SPECIFIC 0x400
#define COMPOSITE_CONNECTOR 0x401
#define SVIDEO_CONNECTOR 0x402
#define COMPONENT_CONNECTOR 0x403
/* Table 2-2 Status Packet Format (VideoControl Interface as the Originator) */
#define CONTROL_INTERRUPT_EVENT_CONTROL_CHANGE 0
/* Table 4-7 Request Error Code Control bRequestErrorCode */
#define UVC_ERROR_NONE 0
#define UVC_ERROR_NOT_READY 1
#define UVC_ERROR_WRONG_STATE 2
#define UVC_ERROR_POWER 3
#define UVC_ERROR_OUT_OF_RANGE 4
#define UVC_ERROR_INVALID_UNIT 5
#define UVC_ERROR_INVALID_CONTROL 6
#define UVC_ERROR_INVALID_REQUEST 7
#define UVC_ERROR_INVALID_VALUE 8
#define UVC_ERROR_UNKNOWN 255
/* A.8 Video Class-Specific Request Codes */
#define USB_SETUP_SET_CUR 0x01
#define USB_SETUP_SET_CUR_ALL 0x11 /* UVC 1.5 */
#define USB_SETUP_GET_CUR 0x81
#define USB_SETUP_GET_MIN 0x82
#define USB_SETUP_GET_MAX 0x83
#define USB_SETUP_GET_RES 0x84
#define USB_SETUP_GET_LEN 0x85
#define USB_SETUP_GET_INFO 0x86
#define USB_SETUP_GET_DEF 0x87
#define USB_SETUP_GET_CUR_ALL 0x91 /* UVC 1.5 */
#define USB_SETUP_GET_MIN_ALL 0x92 /* UVC 1.5 */
#define USB_SETUP_GET_MAX_ALL 0x93 /* UVC 1.5 */
#define USB_SETUP_GET_RES_ALL 0x94 /* UVC 1.5 */
#define USB_SETUP_GET_DEF_ALL 0x97 /* UVC 1.5 */
/* protocols and header fields */
static int proto_usb_vid = -1;
static int hf_usb_vid_control_entity = -1;
static int hf_usb_vid_control_interface = -1;
static int hf_usb_vid_control_selector = -1;
static int hf_usb_vid_epdesc_subtype = -1;
static int hf_usb_vid_epdesc_max_transfer_sz = -1;
static int hf_usb_vid_control_ifdesc_subtype = -1;
static int hf_usb_vid_control_ifdesc_terminal_id = -1;
static int hf_usb_vid_control_ifdesc_terminal_type = -1;
static int hf_usb_vid_control_ifdesc_assoc_terminal = -1;
static int hf_usb_vid_streaming_ifdesc_subtype = -1;
static int hf_usb_vid_streaming_ifdesc_bNumFormats = -1;
static int hf_usb_vid_control_ifdesc_unit_id = -1;
static int hf_usb_vid_request = -1;
static int hf_usb_vid_length = -1;
static int hf_usb_vid_interrupt_bStatusType = -1;
static int hf_usb_vid_interrupt_bOriginator = -1;
static int hf_usb_vid_interrupt_bAttribute = -1;
static int hf_usb_vid_control_interrupt_bEvent = -1;
static int hf_usb_vid_control_ifdesc_bcdUVC = -1;
static int hf_usb_vid_ifdesc_wTotalLength = -1;
static int hf_usb_vid_control_ifdesc_dwClockFrequency = -1;
static int hf_usb_vid_control_ifdesc_bInCollection = -1;
static int hf_usb_vid_control_ifdesc_baInterfaceNr = -1;
static int hf_usb_vid_control_ifdesc_iTerminal = -1;
static int hf_usb_vid_control_ifdesc_src_id = -1;
static int hf_usb_vid_cam_objective_focal_len_min = -1;
static int hf_usb_vid_cam_objective_focal_len_max = -1;
static int hf_usb_vid_cam_ocular_focal_len = -1;
static int hf_usb_vid_bControlSize = -1;
static int hf_usb_vid_bmControl = -1;
static int hf_usb_vid_bmControl_bytes = -1;
static int hf_usb_vid_control_default = -1;
static int hf_usb_vid_control_min = -1;
static int hf_usb_vid_control_max = -1;
static int hf_usb_vid_control_res = -1;
static int hf_usb_vid_control_cur = -1;
static int hf_usb_vid_control_info = -1;
static int hf_usb_vid_control_info_D[7] = { -1, -1, -1, -1, -1, -1, -1 };
static int hf_usb_vid_control_length = -1;
static int hf_usb_vid_cam_control_D[22] = { -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1 };
static int hf_usb_vid_proc_control_D[19] = { -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1 };
static int hf_usb_vid_proc_standards_D[6] = { -1, -1, -1, -1, -1, -1 };
static int hf_usb_vid_exten_guid = -1;
static int hf_usb_vid_exten_num_controls = -1;
static int hf_usb_vid_num_inputs = -1;
static int hf_usb_vid_sources = -1;
static int hf_usb_vid_streaming_bmInfo = -1;
static int hf_usb_vid_streaming_info_D[1] = { -1 };
static int hf_usb_vid_streaming_terminal_link = -1;
static int hf_usb_vid_streaming_still_capture_method = -1;
static int hf_usb_vid_streaming_trigger_support = -1;
static int hf_usb_vid_streaming_trigger_usage = -1;
static int hf_usb_vid_streaming_control_D[6] = { -1, -1, -1, -1, -1, -1 };
static int hf_usb_vid_format_index = -1;
static int hf_usb_vid_format_num_frame_descriptors = -1;
static int hf_usb_vid_format_guid = -1;
static int hf_usb_vid_format_bits_per_pixel = -1;
static int hf_usb_vid_default_frame_index = -1;
static int hf_usb_vid_aspect_ratio_x = -1;
static int hf_usb_vid_aspect_ratio_y = -1;
static int hf_usb_vid_interlace_flags = -1;
static int hf_usb_vid_is_interlaced = -1;
static int hf_usb_vid_interlaced_fields = -1;
static int hf_usb_vid_field_1_first = -1;
static int hf_usb_vid_field_pattern = -1;
static int hf_usb_vid_copy_protect = -1;
static int hf_usb_vid_variable_size = -1;
static int hf_usb_vid_frame_index = -1;
static int hf_usb_vid_frame_capabilities = -1;
static int hf_usb_vid_frame_stills_supported = -1;
static int hf_usb_vid_frame_fixed_frame_rate = -1;
static int hf_usb_vid_frame_width = -1;
static int hf_usb_vid_frame_height = -1;
static int hf_usb_vid_frame_min_bit_rate = -1;
static int hf_usb_vid_frame_max_bit_rate = -1;
static int hf_usb_vid_frame_max_frame_sz = -1;
static int hf_usb_vid_frame_default_interval = -1;
static int hf_usb_vid_frame_bytes_per_line = -1;
static int hf_usb_vid_mjpeg_flags = -1;
static int hf_usb_vid_mjpeg_fixed_samples = -1;
static int hf_usb_vid_probe_hint = -1;
static int hf_usb_vid_probe_hint_D[5] = { -1, -1, -1, -1, -1 };
static int hf_usb_vid_frame_interval = -1;
static int hf_usb_vid_probe_key_frame_rate = -1;
static int hf_usb_vid_probe_p_frame_rate = -1;
static int hf_usb_vid_probe_comp_quality = -1;
static int hf_usb_vid_probe_comp_window = -1;
static int hf_usb_vid_probe_delay = -1;
static int hf_usb_vid_probe_max_frame_sz = -1;
static int hf_usb_vid_probe_max_payload_sz = -1;
static int hf_usb_vid_probe_clock_freq = -1;
static int hf_usb_vid_probe_framing = -1;
static int hf_usb_vid_probe_framing_D[2] = { -1, -1 };
static int hf_usb_vid_probe_preferred_ver = -1;
static int hf_usb_vid_probe_min_ver = -1;
static int hf_usb_vid_probe_max_ver = -1;
static int hf_usb_vid_frame_interval_type = -1;
static int hf_usb_vid_frame_min_interval = -1;
static int hf_usb_vid_frame_max_interval = -1;
static int hf_usb_vid_frame_step_interval = -1;
static int hf_usb_vid_color_primaries = -1;
static int hf_usb_vid_transfer_characteristics = -1;
static int hf_usb_vid_matrix_coefficients = -1;
static int hf_usb_vid_max_multiplier = -1;
static int hf_usb_vid_iProcessing = -1;
static int hf_usb_vid_iExtension = -1;
static int hf_usb_vid_iSelector = -1;
static int hf_usb_vid_proc_standards = -1;
static int hf_usb_vid_request_error = -1;
static int hf_usb_vid_descriptor_data = -1;
static int hf_usb_vid_control_data = -1;
static int hf_usb_vid_control_value = -1;
static int hf_usb_vid_value_data = -1;
/* Subtrees */
static gint ett_usb_vid = -1;
static gint ett_descriptor_video_endpoint = -1;
static gint ett_descriptor_video_control = -1;
static gint ett_descriptor_video_streaming = -1;
static gint ett_camera_controls = -1;
static gint ett_processing_controls = -1;
static gint ett_streaming_controls = -1;
static gint ett_streaming_info = -1;
static gint ett_interlace_flags = -1;
static gint ett_frame_capability_flags = -1;
static gint ett_mjpeg_flags = -1;
static gint ett_video_probe = -1;
static gint ett_probe_hint = -1;
static gint ett_probe_framing = -1;
static gint ett_video_standards = -1;
static gint ett_control_capabilities = -1;
static expert_field ei_usb_vid_subtype_unknown = EI_INIT;
static expert_field ei_usb_vid_bitmask_len = EI_INIT;
/* Lookup tables */
static const value_string vc_ep_descriptor_subtypes[] = {
{ EP_INTERRUPT, "Interrupt" },
{ 0, NULL }
};
static const value_string vid_descriptor_type_vals[] = {
{CS_INTERFACE, "video class interface"},
{CS_ENDPOINT, "video class endpoint"},
{0,NULL}
};
static value_string_ext vid_descriptor_type_vals_ext =
VALUE_STRING_EXT_INIT(vid_descriptor_type_vals);
static const value_string vc_if_descriptor_subtypes[] = {
{ VC_HEADER, "Header" },
{ VC_INPUT_TERMINAL, "Input Terminal" },
{ VC_OUTPUT_TERMINAL, "Output Terminal" },
{ VC_SELECTOR_UNIT, "Selector Unit" },
{ VC_PROCESSING_UNIT, "Processing Unit" },
{ VC_EXTENSION_UNIT, "Extension Unit" },
{ VC_ENCODING_UNIT, "Encoding Unit" },
{ 0, NULL }
};
static value_string_ext vc_if_descriptor_subtypes_ext =
VALUE_STRING_EXT_INIT(vc_if_descriptor_subtypes);
static const value_string cs_control_interface[] = {
{ VC_CONTROL_UNDEFINED, "Undefined" },
{ VC_VIDEO_POWER_MODE_CONTROL, "Video Power Mode" },
{ VC_REQUEST_ERROR_CODE_CONTROL, "Request Error Code" },
{ VC_REQUEST_INDICATE_HOST_CLOCK_CONTROL, "Request Indicate Host Clock" },
{ 0, NULL }
};
static value_string_ext cs_control_interface_ext =
VALUE_STRING_EXT_INIT(cs_control_interface);
static const value_string cs_streaming_interface[] = {
{ VS_CONTROL_UNDEFINED, "Undefined" },
{ VS_PROBE_CONTROL, "Probe" },
{ VS_COMMIT_CONTROL, "Commit" },
{ VS_STILL_PROBE_CONTROL, "Still Probe" },
{ VS_STILL_COMMIT_CONTROL, "Still Commit" },
{ VS_STILL_IMAGE_TRIGGER_CONTROL, "Still Image Trigger" },
{ VS_STREAM_ERROR_CODE_CONTROL, "Stream Error Code" },
{ VS_GENERATE_KEY_FRAME_CONTROL, "Generate Key Frame" },
{ VS_UPDATE_FRAME_SEGMENT_CONTROL, "Update Frame Segment" },
{ VS_SYNCH_DELAY_CONTROL, "Synch Delay" },
{ 0, NULL }
};
static value_string_ext cs_streaming_interface_ext =
VALUE_STRING_EXT_INIT(cs_streaming_interface);
static const value_string cs_selector_unit[] = {
{ SU_CONTROL_UNDEFINED, "Undefined" },
{ SU_INPUT_SELECT_CONTROL, "Input Select" },
{ 0, NULL }
};
static value_string_ext cs_selector_unit_ext =
VALUE_STRING_EXT_INIT(cs_selector_unit);
static const value_string cs_camera_terminal[] = {
{ CT_CONTROL_UNDEFINED, "Undefined" },
{ CT_SCANNING_MODE_CONTROL, "Scanning Mode" },
{ CT_AE_MODE_CONTROL, "Auto-Exposure Mode" },
{ CT_AE_PRIORITY_CONTROL, "Auto-Exposure Priority" },
{ CT_EXPOSURE_TIME_ABSOLUTE_CONTROL, "Exposure Time (Absolute)" },
{ CT_EXPOSURE_TIME_RELATIVE_CONTROL, "Exposure Time (Relative)" },
{ CT_FOCUS_ABSOLUTE_CONTROL, "Focus (Absolute)" },
{ CT_FOCUS_RELATIVE_CONTROL, "Focus (Relative)" },
{ CT_FOCUS_AUTO_CONTROL, "Focus, Auto" },
{ CT_IRIS_ABSOLUTE_CONTROL, "Iris (Absolute)" },
{ CT_IRIS_RELATIVE_CONTROL, "Iris (Relative)" },
{ CT_ZOOM_ABSOLUTE_CONTROL, "Zoom (Absolute)" },
{ CT_ZOOM_RELATIVE_CONTROL, "Zoom (Relative)" },
{ CT_PANTILT_ABSOLUTE_CONTROL, "PanTilt (Absolute)" },
{ CT_PANTILT_RELATIVE_CONTROL, "PanTilt (Relative)" },
{ CT_ROLL_ABSOLUTE_CONTROL, "Roll (Absolute)" },
{ CT_ROLL_RELATIVE_CONTROL, "Roll (Relative)" },
{ CT_PRIVACY_CONTROL, "Privacy" },
{ CT_FOCUS_SIMPLE_CONTROL, "Focus (Simple)" },
{ CT_WINDOW_CONTROL, "Window" },
{ CT_REGION_OF_INTEREST_CONTROL, "Region of Interest" },
{ 0, NULL }
};
static value_string_ext cs_camera_terminal_ext =
VALUE_STRING_EXT_INIT(cs_camera_terminal);
static const value_string cs_processing_unit[] = {
{ PU_CONTROL_UNDEFINED, "Undefined" },
{ PU_BACKLIGHT_COMPENSATION_CONTROL, "Backlight Compensation" },
{ PU_BRIGHTNESS_CONTROL, "Brightness" },
{ PU_CONTRAST_CONTROL, "Contrast" },
{ PU_GAIN_CONTROL, "Gain" },
{ PU_POWER_LINE_FREQUENCY_CONTROL, "Power Line Frequency" },
{ PU_HUE_CONTROL, "Hue" },
{ PU_SATURATION_CONTROL, "Saturation" },
{ PU_SHARPNESS_CONTROL, "Sharpness" },
{ PU_GAMMA_CONTROL, "Gamma" },
{ PU_WHITE_BALANCE_TEMPERATURE_CONTROL, "White Balance Temperature" },
{ PU_WHITE_BALANCE_TEMPERATURE_AUTO_CONTROL,"White Balance Temperature Auto" },
{ PU_WHITE_BALANCE_COMPONENT_CONTROL, "White Balance Component" },
{ PU_WHITE_BALANCE_COMPONENT_AUTO_CONTROL, "White Balance Component Auto" },
{ PU_DIGITAL_MULTIPLIER_CONTROL, "Digital Multiplier" },
{ PU_DIGITAL_MULTIPLIER_LIMIT_CONTROL, "Digital Multiplier Limit" },
{ PU_HUE_AUTO_CONTROL, "Hue Auto" },
{ PU_ANALOG_VIDEO_STANDARD_CONTROL, "Video Standard" },
{ PU_ANALOG_LOCK_STATUS_CONTROL, "Analog Lock Status" },
{ PU_CONTRAST_AUTO_CONTROL, "Contrast Auto" },
{ 0, NULL }
};
static value_string_ext cs_processing_unit_ext =
VALUE_STRING_EXT_INIT(cs_processing_unit);
static const value_string vc_terminal_types[] = {
{ TT_VENDOR_SPECIFIC, "Vendor Specific", },
{ TT_STREAMING, "Streaming" },
{ ITT_VENDOR_SPECIFIC, "Vendor Specific Input" },
{ ITT_CAMERA, "Camera Input" },
{ ITT_MEDIA_TRANSPORT_INPUT, "Media Transport Input" },
{ OTT_VENDOR_SPECIFIC, "Vendor Specific Output" },
{ OTT_DISPLAY, "Display Output" },
{ OTT_MEDIA_TRANSPORT_OUTPUT, "Media Transport Output" },
{ EXTERNAL_VENDOR_SPECIFIC, "Vendor Specific External" },
{ COMPOSITE_CONNECTOR, "Composite Connector" },
{ SVIDEO_CONNECTOR, "SVideo Connector" },
{ COMPONENT_CONNECTOR, "Component Connector" },
{ 0, NULL }
};
static value_string_ext vc_terminal_types_ext =
VALUE_STRING_EXT_INIT(vc_terminal_types);
static const value_string vs_if_descriptor_subtypes[] = {
{ VS_UNDEFINED, "Undefined" },
{ VS_INPUT_HEADER, "Input Header" },
{ VS_OUTPUT_HEADER, "Output Header" },
{ VS_STILL_IMAGE_FRAME, "Still Image Frame" },
{ VS_FORMAT_UNCOMPRESSED, "Format Uncompressed" },
{ VS_FRAME_UNCOMPRESSED, "Frame Uncompressed" },
{ VS_FORMAT_MJPEG, "Format MJPEG" },
{ VS_FRAME_MJPEG, "Frame MJPEG" },
{ VS_FORMAT_MPEG1, "Format MPEG1" },
{ VS_FORMAT_MPEG2PS, "Format MPEG2-PS" },
{ VS_FORMAT_MPEG2TS, "Format MPEG2-TS" },
{ VS_FORMAT_MPEG4SL, "Format MPEG4-SL" },
{ VS_FORMAT_DV, "Format DV" },
{ VS_COLORFORMAT, "Colorformat" },
{ VS_FORMAT_VENDOR, "Format Vendor" },
{ VS_FRAME_VENDOR, "Frame Vendor" },
{ VS_FORMAT_FRAME_BASED, "Format Frame-Based" },
{ VS_FRAME_FRAME_BASED, "Frame Frame-Based" },
{ VS_FORMAT_STREAM_BASED, "Format Stream Based" },
{ VS_FORMAT_H264, "Format H.264" },
{ VS_FRAME_H264, "Frame H.264" },
{ VS_FORMAT_H264_SIMULCAST, "Format H.264 Simulcast" },
{ VS_FORMAT_VP8, "Format VP8" },
{ VS_FRAME_VP8, "Frame VP8" },
{ VS_FORMAT_VP8_SIMULCAST, "Format VP8 Simulcast" },
{ 0, NULL }
};
static value_string_ext vs_if_descriptor_subtypes_ext =
VALUE_STRING_EXT_INIT(vs_if_descriptor_subtypes);
static const value_string interrupt_status_types[] = {
{ INT_VIDEOCONTROL, "VideoControl Interface" },
{ INT_VIDEOSTREAMING, "VideoStreaming Interface" },
{ 0, NULL }
};
static const value_string control_change_types[] = {
{ CONTROL_CHANGE_VALUE, "Value" },
{ CONTROL_CHANGE_INFO, "Info" },
{ CONTROL_CHANGE_FAILURE, "Failure" },
{ CONTROL_CHANGE_MIN, "Min" },
{ CONTROL_CHANGE_MAX, "Max" },
{ 0, NULL }
};
static value_string_ext control_change_types_ext =
VALUE_STRING_EXT_INIT(control_change_types);
static const value_string control_interrupt_events[] = {
{ CONTROL_INTERRUPT_EVENT_CONTROL_CHANGE, "Control Change" },
{ 0, NULL }
};
/* Table 3-13 VS Interface Input Header Descriptor - bStillCaptureMethod field */
static const value_string vs_still_capture_methods[] = {
{ 0, "None" },
{ 1, "Uninterrupted streaming" },
{ 2, "Suspended streaming" },
{ 3, "Dedicated pipe" },
{ 0, NULL }
};
static value_string_ext vs_still_capture_methods_ext =
VALUE_STRING_EXT_INIT(vs_still_capture_methods);
/* Table 3-13 VS Interface Input Header Descriptor - bTriggerUsage field */
static const value_string vs_trigger_usage[] = {
{ 0, "Initiate still image capture" },
{ 1, "General purpose button event" },
{ 0, NULL }
};
/* bmInterlaceFlags for format descriptors */
static const true_false_string is_interlaced_meaning = {
"Interlaced",
"Non-interlaced"
};
/* bmInterlaceFlags for format descriptors */
static const true_false_string interlaced_fields_meaning = {
"1 field",
"2 fields"
};
/* bmInterlaceFlags for format descriptors */
static const value_string field_pattern_meaning[] = {
{ 0, "Field 1 only" },
{ 1, "Field 2 only" },
{ 2, "Regular pattern of fields 1 and 2" },
{ 3, "Random pattern of fields 1 and 2" },
{0, NULL},
};
static value_string_ext field_pattern_meaning_ext =
VALUE_STRING_EXT_INIT(field_pattern_meaning);
/* bCopyProtect for format descriptors */
static const value_string copy_protect_meaning[] = {
{ 0, "No restrictions" },
{ 1, "Restrict duplication" },
{0, NULL},
};
/* Table 4-46 Video Probe and Commit Controls - bmHint field */
static const true_false_string probe_hint_meaning = {
"Constant",
"Variable"
};
/* Table 3-19 Color Matching Descriptor - bColorPrimaries field */
static const value_string color_primaries_meaning[] = {
{ 0, "Unspecified" },
{ 1, "BT.709, sRGB" },
{ 2, "BT.470-2 (M)" },
{ 3, "BT.470-2 (B,G)" },
{ 4, "SMPTE 170M" },
{ 5, "SMPTE 240M" },
{0, NULL},
};
static value_string_ext color_primaries_meaning_ext =
VALUE_STRING_EXT_INIT(color_primaries_meaning);
/* Table 3-19 Color Matching Descriptor - bTransferCharacteristics field */
static const value_string color_transfer_characteristics[] = {
{ 0, "Unspecified" },
{ 1, "BT.709" },
{ 2, "BT.470-2 (M)" },
{ 3, "BT.470-2 (B,G)" },
{ 4, "SMPTE 170M" },
{ 5, "SMPTE 240M" },
{ 6, "Linear (V=Lc)" },
{ 7, "sRGB" },
{0, NULL},
};
static value_string_ext color_transfer_characteristics_ext =
VALUE_STRING_EXT_INIT(color_transfer_characteristics);
/* Table 3-19 Color Matching Descriptor - bMatrixCoefficients field */
static const value_string matrix_coefficients_meaning[] = {
{ 0, "Unspecified" },
{ 1, "BT.709" },
{ 2, "FCC" },
{ 3, "BT.470-2 (B,G)" },
{ 4, "SMPTE 170M (BT.601)" },
{ 5, "SMPTE 240M" },
{0, NULL},
};
static value_string_ext matrix_coefficients_meaning_ext =
VALUE_STRING_EXT_INIT(matrix_coefficients_meaning);
static const value_string request_error_codes[] = {
{ UVC_ERROR_NONE, "No error" },
{ UVC_ERROR_NOT_READY, "Not ready" },
{ UVC_ERROR_WRONG_STATE, "Wrong state" },
{ UVC_ERROR_POWER, "Insufficient power" } ,
{ UVC_ERROR_OUT_OF_RANGE, "Out of range" },
{ UVC_ERROR_INVALID_UNIT, "Invalid unit" },
{ UVC_ERROR_INVALID_CONTROL, "Invalid control" },
{ UVC_ERROR_INVALID_REQUEST, "Invalid request" },
{ UVC_ERROR_INVALID_VALUE, "Invalid value within range" },
{ UVC_ERROR_UNKNOWN, "Unknown" },
{0, NULL},
};
static value_string_ext request_error_codes_ext =
VALUE_STRING_EXT_INIT(request_error_codes);
/* There is one such structure per terminal or unit per interface */
typedef struct
{
guint8 entityID;
guint8 subtype;
guint16 terminalType;
} video_entity_t;
/* video_entity_t's (units/terminals) associated with each video interface */
/* There is one such structure for each video conversation (interface) */
typedef struct _video_conv_info_t {
wmem_tree_t* entities; /* indexed by entity ID */
} video_conv_info_t;
/*****************************************************************************/
/* UTILITY FUNCTIONS */
/*****************************************************************************/
/**
* Dissector for variable-length bmControl bitmask / bControlSize pair.
*
* Creates an item for bControlSize, and a subtree for the bmControl bitmask.
*
* @param tree protocol tree to be the parent of the bitmask subtree
* @param tvb the tv_buff with the (remaining) packet data
* @param offset where in tvb to find bControlSize field
* @param ett_subtree index of the subtree to use for this bitmask
* @param bm_items NULL-terminated array of pointers that lists all the fields
* of the bitmask
*
* @return offset within tvb at which dissection should continue
*/
static int
dissect_bmControl(proto_tree *tree, tvbuff_t *tvb, int offset,
gint ett_subtree, int * const *bm_items)
{
guint8 bm_size = 0;
bm_size = tvb_get_guint8(tvb, offset);
proto_tree_add_item(tree, hf_usb_vid_bControlSize, tvb, offset, 1, ENC_LITTLE_ENDIAN);
++offset;
if (bm_size > 0)
{
proto_tree_add_bitmask_len(tree, tvb, offset, bm_size, hf_usb_vid_bmControl,
ett_subtree, bm_items, &ei_usb_vid_bitmask_len, ENC_LITTLE_ENDIAN);
offset += bm_size;
}
return offset;
}
/*****************************************************************************/
/* VIDEO CONTROL DESCRIPTORS */
/*****************************************************************************/
/* Dissect a Camera Terminal descriptor */
static int
dissect_usb_video_camera_terminal(proto_tree *tree, tvbuff_t *tvb, int offset)
{
static int * const control_bits[] = {
&hf_usb_vid_cam_control_D[0],
&hf_usb_vid_cam_control_D[1],
&hf_usb_vid_cam_control_D[2],
&hf_usb_vid_cam_control_D[3],
&hf_usb_vid_cam_control_D[4],
&hf_usb_vid_cam_control_D[5],
&hf_usb_vid_cam_control_D[6],
&hf_usb_vid_cam_control_D[7],
&hf_usb_vid_cam_control_D[8],
&hf_usb_vid_cam_control_D[9],
&hf_usb_vid_cam_control_D[10],
&hf_usb_vid_cam_control_D[11],
&hf_usb_vid_cam_control_D[12],
&hf_usb_vid_cam_control_D[13],
&hf_usb_vid_cam_control_D[14],
&hf_usb_vid_cam_control_D[15],
&hf_usb_vid_cam_control_D[16],
&hf_usb_vid_cam_control_D[17],
&hf_usb_vid_cam_control_D[18],
&hf_usb_vid_cam_control_D[19],
&hf_usb_vid_cam_control_D[20],
&hf_usb_vid_cam_control_D[21],
NULL
};
DISSECTOR_ASSERT(array_length(control_bits) == (1+array_length(hf_usb_vid_cam_control_D)));
proto_tree_add_item(tree, hf_usb_vid_cam_objective_focal_len_min, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(tree, hf_usb_vid_cam_objective_focal_len_max, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(tree, hf_usb_vid_cam_ocular_focal_len, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
offset = dissect_bmControl(tree, tvb, offset, ett_camera_controls, control_bits);
return offset;
}
/* Dissect a Processing Unit descriptor */
static int
dissect_usb_video_processing_unit(proto_tree *tree, tvbuff_t *tvb, int offset)
{
static int * const control_bits[] = {
&hf_usb_vid_proc_control_D[0],
&hf_usb_vid_proc_control_D[1],
&hf_usb_vid_proc_control_D[2],
&hf_usb_vid_proc_control_D[3],
&hf_usb_vid_proc_control_D[4],
&hf_usb_vid_proc_control_D[5],
&hf_usb_vid_proc_control_D[6],
&hf_usb_vid_proc_control_D[7],
&hf_usb_vid_proc_control_D[8],
&hf_usb_vid_proc_control_D[9],
&hf_usb_vid_proc_control_D[10],
&hf_usb_vid_proc_control_D[11],
&hf_usb_vid_proc_control_D[12],
&hf_usb_vid_proc_control_D[13],
&hf_usb_vid_proc_control_D[14],
&hf_usb_vid_proc_control_D[15],
&hf_usb_vid_proc_control_D[16],
&hf_usb_vid_proc_control_D[17],
&hf_usb_vid_proc_control_D[18],
NULL
};
DISSECTOR_ASSERT(array_length(control_bits) == (1+array_length(hf_usb_vid_proc_control_D)));
proto_tree_add_item(tree, hf_usb_vid_control_ifdesc_src_id, tvb, offset, 1, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_max_multiplier, tvb, offset+1, 2, ENC_LITTLE_ENDIAN);
offset += 3;
offset = dissect_bmControl(tree, tvb, offset, ett_processing_controls, control_bits);
proto_tree_add_item(tree, hf_usb_vid_iProcessing, tvb, offset, 1, ENC_LITTLE_ENDIAN);
++offset;
/* UVC 1.1 added bmVideoStandards */
if (tvb_reported_length_remaining(tvb, offset) > 0)
{
static int * const standard_bits[] = {
&hf_usb_vid_proc_standards_D[0],
&hf_usb_vid_proc_standards_D[1],
&hf_usb_vid_proc_standards_D[2],
&hf_usb_vid_proc_standards_D[3],
&hf_usb_vid_proc_standards_D[4],
&hf_usb_vid_proc_standards_D[5],
NULL
};
DISSECTOR_ASSERT(array_length(standard_bits) == (1+array_length(hf_usb_vid_proc_standards_D)));
proto_tree_add_bitmask(tree, tvb, offset, hf_usb_vid_proc_standards,
ett_video_standards, standard_bits, ENC_NA);
++offset;
}
return offset;
}
/* Dissect a Selector Unit descriptor */
static int
dissect_usb_video_selector_unit(proto_tree *tree, tvbuff_t *tvb, int offset)
{
guint8 num_inputs;
num_inputs = tvb_get_guint8(tvb, offset);
proto_tree_add_item(tree, hf_usb_vid_num_inputs, tvb, offset, 1, ENC_LITTLE_ENDIAN);
++offset;
if (num_inputs > 0)
{
proto_tree_add_item(tree, hf_usb_vid_sources, tvb, offset, num_inputs, ENC_NA);
offset += num_inputs;
}
proto_tree_add_item(tree, hf_usb_vid_iSelector, tvb, offset, 1, ENC_LITTLE_ENDIAN);
++offset;
return offset;
}
/* Dissect an Extension Unit descriptor */
static int
dissect_usb_video_extension_unit(proto_tree *tree, tvbuff_t *tvb, int offset)
{
guint8 num_inputs;
guint8 control_size;
proto_tree_add_item(tree, hf_usb_vid_exten_guid, tvb, offset, 16, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_exten_num_controls, tvb, offset+16, 1, ENC_LITTLE_ENDIAN);
offset += 17;
num_inputs = tvb_get_guint8(tvb, offset);
proto_tree_add_item(tree, hf_usb_vid_num_inputs, tvb, offset, 1, ENC_LITTLE_ENDIAN);
++offset;
if (num_inputs > 0)
{
proto_tree_add_item(tree, hf_usb_vid_sources, tvb, offset, num_inputs, ENC_NA);
offset += num_inputs;
}
control_size = tvb_get_guint8(tvb, offset);
proto_tree_add_item(tree, hf_usb_vid_bControlSize, tvb, offset, 1, ENC_LITTLE_ENDIAN);
++offset;
if (control_size > 0)
{
if (control_size <= proto_registrar_get_length(hf_usb_vid_bmControl))
{
proto_tree_add_item(tree, hf_usb_vid_bmControl, tvb, offset, control_size,
ENC_LITTLE_ENDIAN);
}
else
{
/* Too big to display as integer */
/* @todo Display as FT_BYTES with a big-endian disclaimer?
* See https://gitlab.com/wireshark/wireshark/-/issues/7933
*/
proto_tree_add_bytes_format(tree, hf_usb_vid_bmControl_bytes, tvb, offset, control_size, NULL, "bmControl");
}
offset += control_size;
}
proto_tree_add_item(tree, hf_usb_vid_iExtension, tvb, offset, 1, ENC_LITTLE_ENDIAN);
++offset;
return offset;
}
/**
* Dissector for video class control interface descriptors
*
* @param parent_tree the protocol tree to be the parent of the descriptor subtree
* @param tvb the tv_buff with the (remaining) packet data
* On entry the gaze is set to the descriptor length field.
* @param descriptor_len Length of the descriptor to dissect
* @param pinfo Information associated with the packet being dissected
*
* @return offset within tvb at which dissection should continue
*/
static int
dissect_usb_video_control_interface_descriptor(proto_tree *parent_tree, tvbuff_t *tvb,
guint8 descriptor_len, packet_info *pinfo, usb_conv_info_t *usb_conv_info)
{
video_conv_info_t *video_conv_info = NULL;
video_entity_t *entity = NULL;
proto_item *item = NULL;
proto_item *subtype_item = NULL;
proto_tree *tree = NULL;
guint8 entity_id = 0;
guint16 terminal_type = 0;
int offset = 0;
guint8 subtype;
subtype = tvb_get_guint8(tvb, offset+2);
if (parent_tree)
{
const gchar *subtype_str;
subtype_str = val_to_str_ext(subtype, &vc_if_descriptor_subtypes_ext, "Unknown (0x%x)");
tree = proto_tree_add_subtree_format(parent_tree, tvb, offset, descriptor_len,
ett_descriptor_video_control, &item, "VIDEO CONTROL INTERFACE DESCRIPTOR [%s]",
subtype_str);
}
/* Common fields */
dissect_usb_descriptor_header(tree, tvb, offset, &vid_descriptor_type_vals_ext);
subtype_item = proto_tree_add_item(tree, hf_usb_vid_control_ifdesc_subtype, tvb, offset+2, 1, ENC_LITTLE_ENDIAN);
offset += 3;
if (subtype == VC_HEADER)
{
guint8 num_vs_interfaces;
proto_tree_add_item(tree, hf_usb_vid_control_ifdesc_bcdUVC, tvb, offset, 2, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_ifdesc_wTotalLength, tvb, offset+2, 2, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_control_ifdesc_dwClockFrequency, tvb, offset+4, 4, ENC_LITTLE_ENDIAN);
num_vs_interfaces = tvb_get_guint8(tvb, offset+8);
proto_tree_add_item(tree, hf_usb_vid_control_ifdesc_bInCollection, tvb, offset+8, 1, ENC_LITTLE_ENDIAN);
if (num_vs_interfaces > 0)
{
proto_tree_add_item(tree, hf_usb_vid_control_ifdesc_baInterfaceNr, tvb, offset+9, num_vs_interfaces, ENC_NA);
}
offset += 9 + num_vs_interfaces;
}
else if ((subtype == VC_INPUT_TERMINAL) || (subtype == VC_OUTPUT_TERMINAL))
{
/* Fields common to input and output terminals */
entity_id = tvb_get_guint8(tvb, offset);
terminal_type = tvb_get_letohs(tvb, offset+1);
proto_tree_add_item(tree, hf_usb_vid_control_ifdesc_terminal_id, tvb, offset, 1, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_control_ifdesc_terminal_type, tvb, offset+1, 2, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_control_ifdesc_assoc_terminal, tvb, offset+3, 1, ENC_LITTLE_ENDIAN);
offset += 4;
if (subtype == VC_OUTPUT_TERMINAL)
{
proto_tree_add_item(tree, hf_usb_vid_control_ifdesc_src_id, tvb, offset, 1, ENC_LITTLE_ENDIAN);
++offset;
}
proto_tree_add_item(tree, hf_usb_vid_control_ifdesc_iTerminal, tvb, offset, 1, ENC_LITTLE_ENDIAN);
++offset;
if (subtype == VC_INPUT_TERMINAL)
{
if (terminal_type == ITT_CAMERA)
{
offset = dissect_usb_video_camera_terminal(tree, tvb, offset);
}
else if (terminal_type == ITT_MEDIA_TRANSPORT_INPUT)
{
/* @todo */
}
}
if (subtype == VC_OUTPUT_TERMINAL)
{
if (terminal_type == OTT_MEDIA_TRANSPORT_OUTPUT)
{
/* @todo */
}
}
}
else
{
/* Field common to extension / processing / selector / encoding units */
entity_id = tvb_get_guint8(tvb, offset);
proto_tree_add_item(tree, hf_usb_vid_control_ifdesc_unit_id, tvb, offset, 1, ENC_LITTLE_ENDIAN);
++offset;
if (subtype == VC_PROCESSING_UNIT)
{
offset = dissect_usb_video_processing_unit(tree, tvb, offset);
}
else if (subtype == VC_SELECTOR_UNIT)
{
offset = dissect_usb_video_selector_unit(tree, tvb, offset);
}
else if (subtype == VC_EXTENSION_UNIT)
{
offset = dissect_usb_video_extension_unit(tree, tvb, offset);
}
else if (subtype == VC_ENCODING_UNIT)
{
/* @todo UVC 1.5 */
}
else
{
expert_add_info_format(pinfo, subtype_item, &ei_usb_vid_subtype_unknown,
"Unknown VC subtype %u", subtype);
}
}
/* Soak up descriptor bytes beyond those we know how to dissect */
if (offset < descriptor_len)
{
proto_tree_add_item(tree, hf_usb_vid_descriptor_data, tvb, offset, descriptor_len-offset, ENC_NA);
/* offset = descriptor_len; */
}
if (entity_id != 0)
proto_item_append_text(item, " (Entity %d)", entity_id);
if (subtype != VC_HEADER && usb_conv_info)
{
/* Switch to the usb_conv_info of the Video Control interface */
usb_conv_info = get_usb_iface_conv_info(pinfo, usb_conv_info->interfaceNum);
video_conv_info = (video_conv_info_t *)usb_conv_info->class_data;
if (!video_conv_info)
{
video_conv_info = wmem_new(wmem_file_scope(), video_conv_info_t);
video_conv_info->entities = wmem_tree_new(wmem_file_scope());
usb_conv_info->class_data = video_conv_info;
usb_conv_info->class_data_type = USB_CONV_VIDEO;
} else if (usb_conv_info->class_data_type != USB_CONV_VIDEO) {
/* Stop dissection if another USB type is in the conversation */
return descriptor_len;
}
entity = (video_entity_t*) wmem_tree_lookup32(video_conv_info->entities, entity_id);
if (!entity)
{
entity = wmem_new(wmem_file_scope(), video_entity_t);
entity->entityID = entity_id;
entity->subtype = subtype;
entity->terminalType = terminal_type;
wmem_tree_insert32(video_conv_info->entities, entity_id, entity);
}
}
return descriptor_len;
}
/*****************************************************************************/
/* VIDEO STREAMING DESCRIPTORS */
/*****************************************************************************/
/* Dissect a Video Streaming Input Header descriptor */
static int
dissect_usb_video_streaming_input_header(proto_tree *tree, tvbuff_t *tvb, int offset)
{
guint8 num_formats;
guint8 bm_size;
static int * const info_bits[] = {
&hf_usb_vid_streaming_info_D[0],
NULL
};
static int * const control_bits[] = {
&hf_usb_vid_streaming_control_D[0],
&hf_usb_vid_streaming_control_D[1],
&hf_usb_vid_streaming_control_D[2],
&hf_usb_vid_streaming_control_D[3],
&hf_usb_vid_streaming_control_D[4],
&hf_usb_vid_streaming_control_D[5],
NULL
};
DISSECTOR_ASSERT(array_length(control_bits) == (1+array_length(hf_usb_vid_streaming_control_D)));
num_formats = tvb_get_guint8(tvb, offset);
proto_tree_add_item(tree, hf_usb_vid_streaming_ifdesc_bNumFormats, tvb, offset, 1, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_ifdesc_wTotalLength, tvb, offset+1, 2, ENC_LITTLE_ENDIAN);
offset += 3;
dissect_usb_endpoint_address(tree, tvb, offset);
offset++;
proto_tree_add_bitmask(tree, tvb, offset, hf_usb_vid_streaming_bmInfo,
ett_streaming_info, info_bits, ENC_NA);
proto_tree_add_item(tree, hf_usb_vid_streaming_terminal_link, tvb, offset+1, 1, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_streaming_still_capture_method, tvb, offset+2, 1, ENC_LITTLE_ENDIAN);
offset += 3;
proto_tree_add_item(tree, hf_usb_vid_streaming_trigger_support, tvb, offset, 1, ENC_NA);
if (tvb_get_guint8(tvb, offset) > 0)
{
proto_tree_add_item(tree, hf_usb_vid_streaming_trigger_usage, tvb, offset+1, 1, ENC_LITTLE_ENDIAN);
}
else
{
proto_tree_add_uint_format_value(tree, hf_usb_vid_streaming_trigger_usage, tvb, offset+1, 1, 0, "Not applicable");
}
offset += 2;
/* NOTE: Can't use dissect_bmControl here because there's only one size
* field for (potentially) multiple bmControl fields
*/
bm_size = tvb_get_guint8(tvb, offset);
proto_tree_add_item(tree, hf_usb_vid_bControlSize, tvb, offset, 1, ENC_LITTLE_ENDIAN);
++offset;
if (bm_size > 0)
{
guint8 i;
for (i=0; i<num_formats; ++i)
{
proto_tree_add_bitmask_len(tree, tvb, offset, bm_size, hf_usb_vid_bmControl,
ett_streaming_controls, control_bits, &ei_usb_vid_bitmask_len,
ENC_LITTLE_ENDIAN);
offset += bm_size;
}
}
return offset;
}
/**
* Dissect a known Video Payload Format descriptor.
*
* @param tree protocol tree to which fields should be added
* @param tvb the tv_buff with the (remaining) packet data
* @param offset where in tvb to begin dissection.
* On entry this refers to the bFormatIndex field.
* @param subtype Type of format descriptor, from the
* bDescriptorSubtype field
*
* @return offset within tvb at which dissection should continue
*/
static int
dissect_usb_video_format(proto_tree *tree, tvbuff_t *tvb, int offset,
guint8 subtype)
{
static int * const interlace_bits[] = {
&hf_usb_vid_is_interlaced,
&hf_usb_vid_interlaced_fields,
&hf_usb_vid_field_1_first,
&hf_usb_vid_field_pattern,
NULL
};
proto_item *desc_item;
guint8 format_index;
/* Augment the descriptor root item with the index of this descriptor */
format_index = tvb_get_guint8(tvb, offset);
desc_item = proto_tree_get_parent(tree);
proto_item_append_text(desc_item, " (Format %u)", format_index);
proto_tree_add_item(tree, hf_usb_vid_format_index, tvb, offset, 1, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_format_num_frame_descriptors, tvb, offset+1, 1, ENC_LITTLE_ENDIAN);
offset += 2;
if ((subtype == VS_FORMAT_UNCOMPRESSED) || (subtype == VS_FORMAT_FRAME_BASED))
{
/* Augment the descriptor root item with the format's four-character-code */
char fourcc[5];
tvb_memcpy(tvb, (guint8 *)fourcc, offset, 4);
fourcc[4] = '\0';
proto_item_append_text(desc_item, ": %s", fourcc);
proto_tree_add_item(tree, hf_usb_vid_format_guid, tvb, offset, 16, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_format_bits_per_pixel, tvb, offset+16, 1, ENC_LITTLE_ENDIAN);
offset += 17;
}
else if (subtype == VS_FORMAT_MJPEG)
{
static int * const flags[] = {
&hf_usb_vid_mjpeg_fixed_samples,
NULL
};
proto_tree_add_bitmask(tree, tvb, offset, hf_usb_vid_mjpeg_flags, ett_mjpeg_flags, flags, ENC_NA);
offset++;
}
else
{
/* We should only be called for known format descriptor subtypes */
DISSECTOR_ASSERT_NOT_REACHED();
}
proto_tree_add_item(tree, hf_usb_vid_default_frame_index, tvb, offset, 1, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_aspect_ratio_x, tvb, offset+1, 1, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_aspect_ratio_y, tvb, offset+2, 1, ENC_LITTLE_ENDIAN);
offset += 3;
#if 0
/* @todo Display "N/A" if Camera Terminal does not support scanning mode control */
if (something)
proto_tree_add_uint_format_value(tree, hf_usb_vid_interlace_flags, tvb, offset, 1, tvb_get_guint8(tvb, offset), "Not applicable");
#endif
proto_tree_add_bitmask(tree, tvb, offset, hf_usb_vid_interlace_flags,
ett_interlace_flags, interlace_bits, ENC_NA);
offset++;
proto_tree_add_item(tree, hf_usb_vid_copy_protect, tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset++;
if (subtype == VS_FORMAT_FRAME_BASED)
{
proto_tree_add_item(tree, hf_usb_vid_variable_size, tvb, offset, 1, ENC_NA);
offset++;
}
return offset;
}
/**
* Dissect a known Video Frame descriptor.
*
* @param tree protocol tree to which fields should be added
* @param tvb the tv_buff with the (remaining) packet data
* @param offset where in tvb to begin dissection.
* On entry this refers to the bFrameIndex field.
* @param subtype Type of frame descriptor, from the
* bDescriptorSubtype field
*
* @return offset within tvb at which dissection should continue
*/
static int
dissect_usb_video_frame(proto_tree *tree, tvbuff_t *tvb, int offset,
guint8 subtype)
{
static int * const capability_bits[] = {
&hf_usb_vid_frame_stills_supported,
&hf_usb_vid_frame_fixed_frame_rate,
NULL
};
proto_item *desc_item;
guint8 bFrameIntervalType;
guint8 frame_index;
guint16 frame_width;
guint16 frame_height;
frame_index = tvb_get_guint8(tvb, offset);
proto_tree_add_item(tree, hf_usb_vid_frame_index, tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset++;
proto_tree_add_bitmask(tree, tvb, offset, hf_usb_vid_frame_capabilities,
ett_frame_capability_flags, capability_bits, ENC_NA);
offset++;
proto_tree_add_item(tree, hf_usb_vid_frame_width, tvb, offset, 2, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_frame_height, tvb, offset+2, 2, ENC_LITTLE_ENDIAN);
/* Augment the descriptor root item with useful information */
frame_width = tvb_get_letohs(tvb, offset);
frame_height = tvb_get_letohs(tvb, offset+2);
desc_item = proto_tree_get_parent(tree);
proto_item_append_text(desc_item, " (Index %2u): %4u x %4u", frame_index, frame_width, frame_height);
proto_tree_add_item(tree, hf_usb_vid_frame_min_bit_rate, tvb, offset+4, 4, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_frame_max_bit_rate, tvb, offset+8, 4, ENC_LITTLE_ENDIAN);
offset += 12;
if (subtype != VS_FRAME_FRAME_BASED)
{
proto_tree_add_item(tree, hf_usb_vid_frame_max_frame_sz, tvb, offset, 4, ENC_LITTLE_ENDIAN);
offset += 4;
}
proto_tree_add_item(tree, hf_usb_vid_frame_default_interval, tvb, offset, 4, ENC_LITTLE_ENDIAN);
offset += 4;
bFrameIntervalType = tvb_get_guint8(tvb, offset);
if (bFrameIntervalType == 0)
{
proto_tree_add_uint_format_value(tree, hf_usb_vid_frame_interval_type, tvb, offset, 1,
bFrameIntervalType, "Continuous (0)");
offset++;
if (subtype == VS_FRAME_FRAME_BASED)
{
proto_tree_add_item(tree, hf_usb_vid_frame_bytes_per_line, tvb, offset, 4, ENC_LITTLE_ENDIAN);
offset += 4;
}
proto_tree_add_item(tree, hf_usb_vid_frame_min_interval, tvb, offset, 4, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_frame_max_interval, tvb, offset+4, 4, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_frame_step_interval, tvb, offset+8, 4, ENC_LITTLE_ENDIAN);
offset += 12;
}
else
{
guint8 i;
proto_tree_add_uint_format_value(tree, hf_usb_vid_frame_interval_type, tvb, offset, 1,
bFrameIntervalType, "Discrete (%u choice%s)",
bFrameIntervalType, (bFrameIntervalType > 1) ? "s" : "");
offset++;
if (subtype == VS_FRAME_FRAME_BASED)
{
proto_tree_add_item(tree, hf_usb_vid_frame_bytes_per_line, tvb, offset, 4, ENC_LITTLE_ENDIAN);
offset += 4;
}
for (i=0; i<bFrameIntervalType; ++i)
{
proto_tree_add_item(tree, hf_usb_vid_frame_interval, tvb, offset, 4, ENC_LITTLE_ENDIAN);
offset += 4;
}
}
return offset;
}
/* Dissect a Color Matching descriptor */
static int
dissect_usb_video_colorformat(proto_tree *tree, tvbuff_t *tvb, int offset)
{
proto_tree_add_item(tree, hf_usb_vid_color_primaries, tvb, offset, 1, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_transfer_characteristics, tvb, offset+1, 1, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_matrix_coefficients, tvb, offset+2, 1, ENC_LITTLE_ENDIAN);
offset +=3;
return offset;
}
/**
* Dissector for video class streaming interface descriptors.
*
* @param parent_tree the protocol tree to be the parent of the descriptor subtree
* @param tvb the tv_buff with the (remaining) packet data
* On entry the gaze is set to the descriptor length field.
* @param descriptor_len Length of the descriptor to dissect
*
* @return offset within tvb at which dissection should continue
*/
static int
dissect_usb_video_streaming_interface_descriptor(proto_tree *parent_tree, tvbuff_t *tvb,
guint8 descriptor_len)
{
proto_tree *tree;
int offset = 0;
const gchar *subtype_str;
guint8 subtype;
subtype = tvb_get_guint8(tvb, offset+2);
subtype_str = val_to_str_ext(subtype, &vs_if_descriptor_subtypes_ext, "Unknown (0x%x)");
tree = proto_tree_add_subtree_format(parent_tree, tvb, offset, descriptor_len,
ett_descriptor_video_streaming, NULL, "VIDEO STREAMING INTERFACE DESCRIPTOR [%s]",
subtype_str);
dissect_usb_descriptor_header(tree, tvb, offset, &vid_descriptor_type_vals_ext);
proto_tree_add_item(tree, hf_usb_vid_streaming_ifdesc_subtype, tvb, offset+2, 1, ENC_LITTLE_ENDIAN);
offset += 3;
switch (subtype)
{
case VS_INPUT_HEADER:
offset = dissect_usb_video_streaming_input_header(tree, tvb, offset);
break;
case VS_FORMAT_UNCOMPRESSED:
case VS_FORMAT_MJPEG:
case VS_FORMAT_FRAME_BASED:
offset = dissect_usb_video_format(tree, tvb, offset, subtype);
break;
/* @todo MPEG2, H.264, VP8, Still Image Frame */
/* @todo Obsolete UVC-1.0 descriptors? */
case VS_FRAME_UNCOMPRESSED:
case VS_FRAME_MJPEG:
case VS_FRAME_FRAME_BASED:
offset = dissect_usb_video_frame(tree, tvb, offset, subtype);
break;
case VS_COLORFORMAT:
offset = dissect_usb_video_colorformat(tree, tvb, offset);
break;
default:
break;
}
/* Soak up descriptor bytes beyond those we know how to dissect */
if (offset < descriptor_len)
proto_tree_add_item(tree, hf_usb_vid_descriptor_data, tvb, offset, descriptor_len-offset, ENC_NA);
return descriptor_len;
}
/*****************************************************************************/
/**
* Dissector for video class-specific endpoint descriptor.
*
* @param parent_tree the protocol tree to be the parent of the descriptor subtree
* @param tvb the tv_buff with the (remaining) packet data
* On entry the gaze is set to the descriptor length field.
* @param descriptor_len Length of the descriptor to dissect
*
* @return offset within tvb at which dissection should continue
*/
static int
dissect_usb_video_endpoint_descriptor(proto_tree *parent_tree, tvbuff_t *tvb,
guint8 descriptor_len)
{
proto_tree *tree = NULL;
int offset = 0;
guint8 subtype;
subtype = tvb_get_guint8(tvb, offset+2);
if (parent_tree)
{
const gchar* subtype_str;
subtype_str = val_to_str(subtype, vc_ep_descriptor_subtypes, "Unknown (0x%x)");
tree = proto_tree_add_subtree_format(parent_tree, tvb, offset, descriptor_len,
ett_descriptor_video_endpoint, NULL, "VIDEO CONTROL ENDPOINT DESCRIPTOR [%s]",
subtype_str);
}
dissect_usb_descriptor_header(tree, tvb, offset, &vid_descriptor_type_vals_ext);
proto_tree_add_item(tree, hf_usb_vid_epdesc_subtype, tvb, offset+2, 1, ENC_LITTLE_ENDIAN);
offset += 3;
if (subtype == EP_INTERRUPT)
{
proto_tree_add_item(tree, hf_usb_vid_epdesc_max_transfer_sz, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
}
/* Soak up descriptor bytes beyond those we know how to dissect */
if (offset < descriptor_len)
proto_tree_add_item(tree, hf_usb_vid_descriptor_data, tvb, offset, descriptor_len-offset, ENC_NA);
return descriptor_len;
}
/**
* Registered dissector for video class-specific descriptors
*
* @param tvb the tv_buff with the (remaining) packet data
* On entry the gaze is set to the descriptor length field.
* @param pinfo the packet info of this packet (additional info)
* @param tree the protocol tree to be built or NULL
* @param data Not used
*
* @return 0 no class specific dissector was found
* @return <0 not enough data
* @return >0 amount of data in the descriptor
*/
static int
dissect_usb_vid_descriptor(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
{
int offset = 0;
guint8 descriptor_len;
guint8 descriptor_type;
gint bytes_available;
usb_conv_info_t *usb_conv_info = (usb_conv_info_t *)data;
tvbuff_t *desc_tvb;
descriptor_len = tvb_get_guint8(tvb, offset);
descriptor_type = tvb_get_guint8(tvb, offset+1);
bytes_available = tvb_captured_length_remaining(tvb, offset);
desc_tvb = tvb_new_subset_length_caplen(tvb, 0, bytes_available, descriptor_len);
if (descriptor_type == CS_ENDPOINT)
{
offset = dissect_usb_video_endpoint_descriptor(tree, desc_tvb,
descriptor_len);
}
else if (descriptor_type == CS_INTERFACE)
{
if (usb_conv_info && usb_conv_info->interfaceSubclass == SC_VIDEOCONTROL)
{
offset = dissect_usb_video_control_interface_descriptor(tree, desc_tvb,
descriptor_len,
pinfo, usb_conv_info);
}
else if (usb_conv_info && usb_conv_info->interfaceSubclass == SC_VIDEOSTREAMING)
{
offset = dissect_usb_video_streaming_interface_descriptor(tree, desc_tvb,
descriptor_len);
}
}
/* else not something we recognize, just return offset = 0 */
return offset;
}
/*****************************************************************************/
/* CONTROL TRANSFERS */
/*****************************************************************************/
/**
* Dissect GET/SET transactions on the Video Probe and Commit controls.
*
* @param parent_tree protocol tree to which the probe/commit subtree should be added
* @param tvb the tv_buff with the (remaining) packet data
* @param offset where in tvb to begin dissection.
* On entry this refers to the probe/commit bmHint field.
*
* @return offset within tvb at which dissection should continue
*/
static int
dissect_usb_vid_probe(proto_tree *parent_tree, tvbuff_t *tvb, int offset)
{
proto_tree *tree;
static int * const hint_bits[] = {
&hf_usb_vid_probe_hint_D[0],
&hf_usb_vid_probe_hint_D[1],
&hf_usb_vid_probe_hint_D[2],
&hf_usb_vid_probe_hint_D[3],
&hf_usb_vid_probe_hint_D[4],
NULL
};
DISSECTOR_ASSERT(array_length(hint_bits) == (1+array_length(hf_usb_vid_probe_hint_D)));
tree = proto_tree_add_subtree(parent_tree, tvb, offset, -1, ett_video_probe, NULL, "Probe/Commit Info");
proto_tree_add_bitmask(tree, tvb, offset, hf_usb_vid_probe_hint,
ett_probe_hint, hint_bits, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_format_index, tvb, offset+2, 1, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_frame_index, tvb, offset+3, 1, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_frame_interval, tvb, offset+4, 4, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_probe_key_frame_rate, tvb, offset+8, 2, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_probe_p_frame_rate, tvb, offset+10, 2, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_probe_comp_quality, tvb, offset+12, 2, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_probe_comp_window, tvb, offset+14, 2, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_probe_delay, tvb, offset+16, 2, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_probe_max_frame_sz, tvb, offset+18, 4, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_probe_max_payload_sz, tvb, offset+22, 4, ENC_LITTLE_ENDIAN);
offset += 26;
/* UVC 1.1 fields */
if (tvb_reported_length_remaining(tvb, offset) > 0)
{
static int * const framing_bits[] = {
&hf_usb_vid_probe_framing_D[0],
&hf_usb_vid_probe_framing_D[1],
NULL
};
DISSECTOR_ASSERT(array_length(framing_bits) == (1+array_length(hf_usb_vid_probe_framing_D)));
proto_tree_add_item(tree, hf_usb_vid_probe_clock_freq, tvb, offset, 4, ENC_LITTLE_ENDIAN);
offset += 4;
proto_tree_add_bitmask(tree, tvb, offset, hf_usb_vid_probe_framing,
ett_probe_framing, framing_bits, ENC_NA);
offset++;
proto_tree_add_item(tree, hf_usb_vid_probe_preferred_ver, tvb, offset, 1, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_probe_min_ver, tvb, offset+1, 1, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_usb_vid_probe_max_ver, tvb, offset+2, 1, ENC_LITTLE_ENDIAN);
offset += 3;
}
return offset;
}
/**
* Fetch the table that describes known control selectors for the specified unit/terminal.
*
* @param entity_id Unit or terminal of interest
* @param usb_conv_info Information about the interface the entity is part of
*
* @return Table describing control selectors for the specified entity (may be NULL)
*/
static value_string_ext*
get_control_selector_values(guint8 entity_id, usb_conv_info_t *usb_conv_info)
{
video_conv_info_t *video_conv_info;
video_entity_t *entity = NULL;
value_string_ext *selectors = NULL;
if (usb_conv_info == NULL)
return NULL;
video_conv_info = (video_conv_info_t *)usb_conv_info->class_data;
if (video_conv_info)
entity = (video_entity_t*) wmem_tree_lookup32(video_conv_info->entities, entity_id);
if (entity_id == 0)
{
/* Interface Request*/
switch (usb_conv_info->interfaceSubclass)
{
case SC_VIDEOCONTROL:
selectors = &cs_control_interface_ext;
break;
case SC_VIDEOSTREAMING:
selectors = &cs_streaming_interface_ext;
break;
default:
break;
}
}
else if (entity)
{
switch (entity->subtype)
{
case VC_INPUT_TERMINAL:
if (entity->terminalType == ITT_CAMERA)
{
selectors = &cs_camera_terminal_ext;
}
break;
case VC_PROCESSING_UNIT:
selectors = &cs_processing_unit_ext;
break;
case VC_SELECTOR_UNIT:
selectors = &cs_selector_unit_ext;
break;
default:
break;
}
}
return selectors;
}
/**
* Fetch the name of an entity's control.
*
* @param entity_id Unit or terminal of interest
* @param control_sel Control of interest
* @param usb_conv_info Information about the interface the entity is part of
*
* @return Table describing control selectors for the specified entity (may be NULL)
*/
static const gchar*
get_control_selector_name(guint8 entity_id, guint8 control_sel, usb_conv_info_t *usb_conv_info)
{
const gchar *control_name = NULL;
value_string_ext *selectors = NULL;
selectors = get_control_selector_values(entity_id, usb_conv_info);
if (selectors)
control_name = try_val_to_str_ext(control_sel, selectors);
return control_name;
}
/* Dissect the response to a GET INFO request */
static int
dissect_usb_vid_control_info(proto_tree *tree, tvbuff_t *tvb, int offset)
{
static int * const capability_bits[] = {
&hf_usb_vid_control_info_D[0],
&hf_usb_vid_control_info_D[1],
&hf_usb_vid_control_info_D[2],
&hf_usb_vid_control_info_D[3],
&hf_usb_vid_control_info_D[4],
&hf_usb_vid_control_info_D[5],
&hf_usb_vid_control_info_D[6],
NULL
};
DISSECTOR_ASSERT(array_length(capability_bits) == (1+array_length(hf_usb_vid_control_info_D)));
proto_tree_add_bitmask(tree, tvb, offset, hf_usb_vid_control_info,
ett_control_capabilities, capability_bits, ENC_NA);
return offset+1;
}
/* Dissect all remaining bytes in the tvb as a specified type of UVC value.
* These are displayed as an unsigned integer where possible, otherwise just as
* a text item.
*
* @param tree the protocol tree to which an item will be added
* @param tvb the tv_buff with the (remaining) packet data
* @param offset How far into tvb the value data begins
* @param request Identifies type of value - either bRequest from a CONTROL
* transfer (i.e., USB_SETUP_GET_MAX), or bValue from an
* INTERRUPT transfer (i.e., CONTROL_CHANGE_MAX).
*/
static void
dissect_usb_vid_control_value(proto_tree *tree, tvbuff_t *tvb, int offset, guint8 request)
{
gint value_size;
const char *fallback_name;
int hf;
switch (request)
{
case USB_SETUP_GET_DEF:
hf = hf_usb_vid_control_default;
fallback_name = "Default Value";
break;
case USB_SETUP_GET_MIN:
case CONTROL_CHANGE_MIN:
hf = hf_usb_vid_control_min;
fallback_name = "Min Value";
break;
case USB_SETUP_GET_MAX:
case CONTROL_CHANGE_MAX:
hf = hf_usb_vid_control_max;
fallback_name = "Max Value";
break;
case USB_SETUP_GET_RES:
hf = hf_usb_vid_control_res;
fallback_name = "Resolution";
break;
case USB_SETUP_GET_CUR:
case USB_SETUP_SET_CUR:
case CONTROL_CHANGE_VALUE:
hf = hf_usb_vid_control_cur;
fallback_name = "Current Value";
break;
/* @todo UVC 1.5 USB_SETUP_x_ALL?
* They are poorly specified.
*/
default:
hf = -1;
fallback_name = "Value";
break;
}
value_size = tvb_reported_length_remaining(tvb, offset);
if (hf != -1)
{
header_field_info *hfinfo;
hfinfo = proto_registrar_get_nth(hf);
DISSECTOR_ASSERT(IS_FT_INT(hfinfo->type) || IS_FT_UINT(hfinfo->type));
}
if ((hf != -1) && (value_size <= 4))
{
proto_tree_add_item(tree, hf, tvb, offset, value_size, ENC_LITTLE_ENDIAN);
}
else
{
/* @todo Display as FT_BYTES with a big-endian disclaimer?
* See https://gitlab.com/wireshark/wireshark/-/issues/7933
*/
proto_tree_add_bytes_format(tree, hf_usb_vid_control_value, tvb, offset, value_size, NULL, "%s", fallback_name);
}
}
/**
* Dissect video class GET/SET transactions.
*
* @param pinfo Information associated with the packet being dissected
* @param tree protocol tree to which fields should be added
* @param tvb the tv_buff with the (remaining) packet data
* @param offset where in tvb to begin dissection.
* On entry this refers to the bRequest field of the SETUP
* transaction.
* @param is_request true if the packet is host-to-device,
* false if device-to-host
* @param usb_trans_info Information specific to this request/response pair
* @param usb_conv_info Information about the conversation with the host
*/
static int
dissect_usb_vid_get_set(packet_info *pinfo, proto_tree *tree, tvbuff_t *tvb,
int offset, gboolean is_request,
usb_trans_info_t *usb_trans_info,
usb_conv_info_t *usb_conv_info)
{
const gchar *short_name = NULL;
guint8 control_sel;
guint8 entity_id;
entity_id = usb_trans_info->setup.wIndex >> 8;
control_sel = usb_trans_info->setup.wValue >> 8;
/* Display something informative in the INFO column */
col_append_str(pinfo->cinfo, COL_INFO, " [");
short_name = get_control_selector_name(entity_id, control_sel, usb_conv_info);
if (short_name)
col_append_str(pinfo->cinfo, COL_INFO, short_name);
else
{
short_name = "Unknown";
if (entity_id == 0)
{
col_append_fstr(pinfo->cinfo, COL_INFO, "Interface %u control 0x%x",
usb_conv_info->interfaceNum, control_sel);
}
else
{
col_append_fstr(pinfo->cinfo, COL_INFO, "Unit %u control 0x%x",
entity_id, control_sel);
}
}
col_append_str(pinfo->cinfo, COL_INFO, "]");
col_set_fence(pinfo->cinfo, COL_INFO);
/* Add information on request context,
* as GENERATED fields if not directly available (for filtering)
*/
if (is_request)
{
/* Move gaze to control selector (MSB of wValue) */
offset++;
proto_tree_add_uint_format_value(tree, hf_usb_vid_control_selector, tvb,
offset, 1, control_sel, "%s (0x%02x)", short_name, control_sel);
offset++;
proto_tree_add_item(tree, hf_usb_vid_control_interface, tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset++;
proto_tree_add_item(tree, hf_usb_vid_control_entity, tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset++;
proto_tree_add_item(tree, hf_usb_vid_length, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
}
else
{
proto_item *ti;
ti = proto_tree_add_uint(tree, hf_usb_vid_control_interface, tvb, 0, 0,
usb_trans_info->setup.wIndex & 0xFF);
proto_item_set_generated(ti);
ti = proto_tree_add_uint(tree, hf_usb_vid_control_entity, tvb, 0, 0, entity_id);
proto_item_set_generated(ti);
ti = proto_tree_add_uint_format_value(tree, hf_usb_vid_control_selector, tvb,
0, 0, control_sel, "%s (0x%02x)", short_name, control_sel);
proto_item_set_generated(ti);
}
if (!is_request || (usb_trans_info->setup.request == USB_SETUP_SET_CUR))
{
gint value_size = tvb_reported_length_remaining(tvb, offset);
if (value_size != 0)
{
if ((entity_id == 0) && (usb_conv_info->interfaceSubclass == SC_VIDEOSTREAMING))
{
if ((control_sel == VS_PROBE_CONTROL) || (control_sel == VS_COMMIT_CONTROL))
{
int old_offset = offset;
offset = dissect_usb_vid_probe(tree, tvb, offset);
value_size -= (offset - old_offset);
}
}
else
{
if (usb_trans_info->setup.request == USB_SETUP_GET_INFO)
{
dissect_usb_vid_control_info(tree, tvb, offset);
offset++;
value_size--;
}
else if (usb_trans_info->setup.request == USB_SETUP_GET_LEN)
{
proto_tree_add_item(tree, hf_usb_vid_control_length, tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
value_size -= 2;
}
else if ( (usb_trans_info->setup.request == USB_SETUP_GET_CUR)
&& (entity_id == 0)
&& (usb_conv_info->interfaceSubclass == SC_VIDEOCONTROL)
&& (control_sel == VC_REQUEST_ERROR_CODE_CONTROL))
{
proto_tree_add_item(tree, hf_usb_vid_request_error, tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset++;
value_size--;
}
else
{
dissect_usb_vid_control_value(tree, tvb, offset, usb_trans_info->setup.request);
offset += value_size;
value_size = 0;
}
}
if (value_size > 0)
{
proto_tree_add_item(tree, hf_usb_vid_control_data, tvb, offset, -1, ENC_NA);
offset += value_size;
}
}
}
return offset;
}
/* Table for dispatch of video class SETUP transactions based on bRequest.
* At the moment this is overkill since the same function handles all defined
* requests.
*/
typedef int (*usb_setup_dissector)(packet_info *pinfo, proto_tree *tree,
tvbuff_t *tvb, int offset,
gboolean is_request,
usb_trans_info_t *usb_trans_info,
usb_conv_info_t *usb_conv_info);
typedef struct _usb_setup_dissector_table_t
{
guint8 request;
usb_setup_dissector dissector;
} usb_setup_dissector_table_t;
static const usb_setup_dissector_table_t setup_dissectors[] = {
{USB_SETUP_SET_CUR, dissect_usb_vid_get_set},
{USB_SETUP_SET_CUR_ALL, dissect_usb_vid_get_set},
{USB_SETUP_GET_CUR, dissect_usb_vid_get_set},
{USB_SETUP_GET_MIN, dissect_usb_vid_get_set},
{USB_SETUP_GET_MAX, dissect_usb_vid_get_set},
{USB_SETUP_GET_RES, dissect_usb_vid_get_set},
{USB_SETUP_GET_LEN, dissect_usb_vid_get_set},
{USB_SETUP_GET_INFO, dissect_usb_vid_get_set},
{USB_SETUP_GET_DEF, dissect_usb_vid_get_set},
{USB_SETUP_GET_CUR_ALL, dissect_usb_vid_get_set},
{USB_SETUP_GET_MIN_ALL, dissect_usb_vid_get_set},
{USB_SETUP_GET_MAX_ALL, dissect_usb_vid_get_set},
{USB_SETUP_GET_RES_ALL, dissect_usb_vid_get_set},
{0, NULL}
};
static const value_string setup_request_names_vals[] = {
{USB_SETUP_SET_CUR, "SET CUR"},
{USB_SETUP_SET_CUR_ALL, "SET CUR ALL"},
{USB_SETUP_GET_CUR, "GET CUR"},
{USB_SETUP_GET_MIN, "GET MIN"},
{USB_SETUP_GET_MAX, "GET MAX"},
{USB_SETUP_GET_RES, "GET RES"},
{USB_SETUP_GET_LEN, "GET LEN"},
{USB_SETUP_GET_INFO, "GET INFO"},
{USB_SETUP_GET_DEF, "GET DEF"},
{USB_SETUP_GET_CUR_ALL, "GET CUR ALL"},
{USB_SETUP_GET_MIN_ALL, "GET MIN ALL"},
{USB_SETUP_GET_MAX_ALL, "GET MAX ALL"},
{USB_SETUP_GET_RES_ALL, "GET RES ALL"},
{USB_SETUP_GET_DEF_ALL, "GET DEF ALL"},
{0, NULL}
};
/* Registered dissector for video class-specific control requests.
* Dispatch to an appropriate dissector function.
*
* @param tvb the tv_buff with the (remaining) packet data.
* On entry, the gaze is set to SETUP bRequest field.
* @param pinfo the packet info of this packet (additional info)
* @param tree the protocol tree to be built or NULL
* @param data Not used
*
* @return 0 no class specific dissector was found
* @return <0 not enough data
* @return >0 amount of data in the descriptor
*/
static int
dissect_usb_vid_control(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
{
gboolean is_request = (pinfo->srcport == NO_ENDPOINT);
usb_conv_info_t *usb_conv_info;
usb_trans_info_t *usb_trans_info;
int offset = 0;
usb_setup_dissector dissector = NULL;
const usb_setup_dissector_table_t *tmp;
/* Reject the packet if data or usb_trans_info are NULL */
if (data == NULL || ((usb_conv_info_t *)data)->usb_trans_info == NULL)
return 0;
usb_conv_info = (usb_conv_info_t *)data;
usb_trans_info = usb_conv_info->usb_trans_info;
/* See if we can find a class specific dissector for this request */
for (tmp=setup_dissectors; tmp->dissector; tmp++)
{
if (tmp->request == usb_trans_info->setup.request)
{
dissector = tmp->dissector;
break;
}
}
/* No we could not find any class specific dissector for this request
* return FALSE and let USB try any of the standard requests.
*/
if (!dissector)
return 0;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "USBVIDEO");
col_add_fstr(pinfo->cinfo, COL_INFO, "%s %s",
val_to_str(usb_trans_info->setup.request, setup_request_names_vals, "Unknown type %x"),
is_request?"Request ":"Response");
if (is_request)
{
proto_tree_add_item(tree, hf_usb_vid_request, tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
}
offset = dissector(pinfo, tree, tvb, offset, is_request, usb_trans_info, usb_conv_info);
return offset;
}
/* Registered dissector for video class-specific URB_INTERRUPT
*
* @param tvb the tv_buff with the (remaining) packet data
* @param pinfo the packet info of this packet (additional info)
* @param tree the protocol tree to be built or NULL
* @param data Unused API parameter
*
* @return 0 no class specific dissector was found
* @return <0 not enough data
* @return >0 amount of data in the descriptor
*/
static int
dissect_usb_vid_interrupt(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
{
usb_conv_info_t *usb_conv_info;
gint bytes_available;
int offset = 0;
usb_conv_info = (usb_conv_info_t *)data;
bytes_available = tvb_reported_length_remaining(tvb, offset);
col_set_str(pinfo->cinfo, COL_PROTOCOL, "USBVIDEO");
if (bytes_available > 0)
{
guint8 originating_interface;
guint8 originating_entity;
originating_interface = tvb_get_guint8(tvb, offset) & INT_ORIGINATOR_MASK;
proto_tree_add_item(tree, hf_usb_vid_interrupt_bStatusType, tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset++;
originating_entity = tvb_get_guint8(tvb, offset);
proto_tree_add_item(tree, hf_usb_vid_interrupt_bOriginator, tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset++;
if (originating_interface == INT_VIDEOCONTROL)
{
guint8 control_sel;
guint8 attribute;
const gchar *control_name;
proto_tree_add_item(tree, hf_usb_vid_control_interrupt_bEvent, tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset++;
control_sel = tvb_get_guint8(tvb, offset);
control_name = get_control_selector_name(originating_entity, control_sel, usb_conv_info);
if (!control_name)
control_name = "Unknown";
proto_tree_add_uint_format_value(tree, hf_usb_vid_control_selector, tvb,
offset, 1, control_sel, "%s (0x%02x)",
control_name, control_sel);
offset++;
attribute = tvb_get_guint8(tvb, offset);
proto_tree_add_item(tree, hf_usb_vid_interrupt_bAttribute, tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset++;
switch (attribute)
{
case CONTROL_CHANGE_FAILURE:
proto_tree_add_item(tree, hf_usb_vid_request_error, tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset++;
break;
case CONTROL_CHANGE_INFO:
offset = dissect_usb_vid_control_info(tree, tvb, offset);
break;
case CONTROL_CHANGE_VALUE:
case CONTROL_CHANGE_MIN:
case CONTROL_CHANGE_MAX:
dissect_usb_vid_control_value(tree, tvb, offset, attribute);
offset += tvb_reported_length_remaining(tvb, offset);
break;
default:
proto_tree_add_item(tree, hf_usb_vid_value_data, tvb, offset, -1, ENC_NA);
offset += tvb_reported_length_remaining(tvb, offset);
break;
}
}
else if (originating_interface == INT_VIDEOSTREAMING)
{
/* @todo */
}
}
else
offset = -2;
return offset;
}
void
proto_register_usb_vid(void)
{
static hf_register_info hf[] = {
/***** Setup *****/
{ &hf_usb_vid_request,
{ "bRequest", "usbvideo.setup.bRequest", FT_UINT8, BASE_HEX, VALS(setup_request_names_vals), 0x0,
NULL, HFILL }
},
{ &hf_usb_vid_length,
{ "wLength", "usbvideo.setup.wLength", FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
/***** Request Error Control *****/
{ &hf_usb_vid_request_error,
{ "bRequestErrorCode", "usbvideo.reqerror.code",
FT_UINT8, BASE_DEC | BASE_EXT_STRING,
&request_error_codes_ext, 0,
"Request Error Code", HFILL }
},
/***** Unit/Terminal Controls *****/
{ &hf_usb_vid_control_selector,
{ "Control Selector", "usbvideo.control.selector", FT_UINT8, BASE_HEX, NULL, 0x0,
"ID of the control within its entity", HFILL }
},
{ &hf_usb_vid_control_entity,
{ "Entity", "usbvideo.control.entity", FT_UINT8, BASE_HEX, NULL, 0x0,
"Unit or terminal to which the control belongs", HFILL }
},
{ &hf_usb_vid_control_interface,
{ "Interface", "usbvideo.control.interface", FT_UINT8, BASE_HEX, NULL, 0x0,
"Interface to which the control belongs", HFILL }
},
{ &hf_usb_vid_control_info,
{ "Info (Capabilities/State)", "usbvideo.control.info",
FT_UINT8, BASE_HEX, NULL, 0,
"Control capabilities and current state", HFILL }
},
{ &hf_usb_vid_control_info_D[0],
{ "Supports GET", "usbvideo.control.info.D0",
FT_BOOLEAN, 8, TFS(&tfs_yes_no), (1<<0),
NULL, HFILL }
},
{ &hf_usb_vid_control_info_D[1],
{ "Supports SET", "usbvideo.control.info.D1",
FT_BOOLEAN, 8, TFS(&tfs_yes_no), (1<<1),
NULL, HFILL }
},
{ &hf_usb_vid_control_info_D[2],
{ "Disabled due to automatic mode", "usbvideo.control.info.D2",
FT_BOOLEAN, 8, TFS(&tfs_yes_no), (1<<2),
NULL, HFILL }
},
{ &hf_usb_vid_control_info_D[3],
{ "Autoupdate", "usbvideo.control.info.D3",
FT_BOOLEAN, 8, TFS(&tfs_yes_no), (1<<3),
NULL, HFILL }
},
{ &hf_usb_vid_control_info_D[4],
{ "Asynchronous", "usbvideo.control.info.D4",
FT_BOOLEAN, 8, TFS(&tfs_yes_no), (1<<4),
NULL, HFILL }
},
{ &hf_usb_vid_control_info_D[5],
{ "Disabled due to incompatibility with Commit state", "usbvideo.control.info.D5",
FT_BOOLEAN, 8, TFS(&tfs_yes_no), (1<<5),
NULL, HFILL }
},
{ &hf_usb_vid_control_info_D[6],
{ "Reserved", "usbvideo.control.info.D6",
FT_UINT8, BASE_HEX, NULL, (3<<6),
NULL, HFILL }
},
{ &hf_usb_vid_control_length,
{ "Control Length", "usbvideo.control.len",
FT_UINT16, BASE_DEC, NULL, 0,
"Control size in bytes", HFILL }
},
{ &hf_usb_vid_control_default,
{ "Default value", "usbvideo.control.value.default",
FT_UINT32, BASE_DEC_HEX, NULL, 0,
NULL, HFILL }
},
{ &hf_usb_vid_control_min,
{ "Minimum value", "usbvideo.control.value.min",
FT_UINT32, BASE_DEC_HEX, NULL, 0,
NULL, HFILL }
},
{ &hf_usb_vid_control_max,
{ "Maximum value", "usbvideo.control.value.max",
FT_UINT32, BASE_DEC_HEX, NULL, 0,
NULL, HFILL }
},
{ &hf_usb_vid_control_res,
{ "Resolution", "usbvideo.control.value.res",
FT_UINT32, BASE_DEC_HEX, NULL, 0,
NULL, HFILL }
},
{ &hf_usb_vid_control_cur,
{ "Current value", "usbvideo.control.value.cur",
FT_UINT32, BASE_DEC_HEX, NULL, 0,
NULL, HFILL }
},
/***** Terminal Descriptors *****/
/* @todo Decide whether to unify .name fields */
{ &hf_usb_vid_control_ifdesc_iTerminal,
{ "iTerminal", "usbvideo.terminal.name", FT_UINT8, BASE_DEC, NULL, 0x0,
"String Descriptor describing this terminal", HFILL }
},
/* @todo Decide whether to unify .terminal.id and .unit.id under .entityID */
{ &hf_usb_vid_control_ifdesc_terminal_id,
{ "bTerminalID", "usbvideo.terminal.id", FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_usb_vid_control_ifdesc_terminal_type,
{ "wTerminalType", "usbvideo.terminal.type",
FT_UINT16, BASE_HEX | BASE_EXT_STRING, &vc_terminal_types_ext, 0,
NULL, HFILL }
},
{ &hf_usb_vid_control_ifdesc_assoc_terminal,
{ "bAssocTerminal", "usbvideo.terminal.assocTerminal", FT_UINT8, BASE_DEC, NULL, 0x0,
"Associated Terminal", HFILL }
},
/***** Camera Terminal Descriptor *****/
{ &hf_usb_vid_cam_objective_focal_len_min,
{ "wObjectiveFocalLengthMin", "usbvideo.camera.objectiveFocalLengthMin",
FT_UINT16, BASE_DEC, NULL, 0,
"Minimum Focal Length for Optical Zoom", HFILL }
},
{ &hf_usb_vid_cam_objective_focal_len_max,
{ "wObjectiveFocalLengthMax", "usbvideo.camera.objectiveFocalLengthMax",
FT_UINT16, BASE_DEC, NULL, 0,
"Minimum Focal Length for Optical Zoom", HFILL }
},
{ &hf_usb_vid_cam_ocular_focal_len,
{ "wOcularFocalLength", "usbvideo.camera.ocularFocalLength",
FT_UINT16, BASE_DEC, NULL, 0,
"Ocular Focal Length for Optical Zoom", HFILL }
},
{ &hf_usb_vid_cam_control_D[0],
{ "Scanning Mode", "usbvideo.camera.control.D0",
FT_BOOLEAN,
array_length(hf_usb_vid_cam_control_D),
TFS(&tfs_yes_no), (1<<0),
NULL, HFILL }
},
{ &hf_usb_vid_cam_control_D[1],
{ "Auto Exposure Mode", "usbvideo.camera.control.D1",
FT_BOOLEAN,
array_length(hf_usb_vid_cam_control_D),
TFS(&tfs_yes_no), (1<<1),
NULL, HFILL }
},
{ &hf_usb_vid_cam_control_D[2],
{ "Auto Exposure Priority", "usbvideo.camera.control.D2",
FT_BOOLEAN,
array_length(hf_usb_vid_cam_control_D),
TFS(&tfs_yes_no), (1<<2),
NULL, HFILL }
},
{ &hf_usb_vid_cam_control_D[3],
{ "Exposure Time (Absolute)", "usbvideo.camera.control.D3",
FT_BOOLEAN,
array_length(hf_usb_vid_cam_control_D),
TFS(&tfs_yes_no), (1<<3),
NULL, HFILL }
},
{ &hf_usb_vid_cam_control_D[4],
{ "Exposure Time (Relative)", "usbvideo.camera.control.D4",
FT_BOOLEAN,
array_length(hf_usb_vid_cam_control_D),
TFS(&tfs_yes_no), (1<<4),
NULL, HFILL }
},
{ &hf_usb_vid_cam_control_D[5],
{ "Focus (Absolute)", "usbvideo.camera.control.D5",
FT_BOOLEAN,
array_length(hf_usb_vid_cam_control_D),
TFS(&tfs_yes_no), (1<<5),
NULL, HFILL }
},
{ &hf_usb_vid_cam_control_D[6],
{ "Focus (Relative)", "usbvideo.camera.control.D6",
FT_BOOLEAN,
array_length(hf_usb_vid_cam_control_D),
TFS(&tfs_yes_no), (1<<6),
NULL, HFILL }
},
{ &hf_usb_vid_cam_control_D[7],
{ "Iris (Absolute)", "usbvideo.camera.control.D7",
FT_BOOLEAN,
array_length(hf_usb_vid_cam_control_D),
TFS(&tfs_yes_no), (1<<7),
NULL, HFILL }
},
{ &hf_usb_vid_cam_control_D[8],
{ "Iris (Relative)", "usbvideo.camera.control.D8",
FT_BOOLEAN,
array_length(hf_usb_vid_cam_control_D),
TFS(&tfs_yes_no), (1<<8),
NULL, HFILL }
},
{ &hf_usb_vid_cam_control_D[9],
{ "Zoom (Absolute)", "usbvideo.camera.control.D9",
FT_BOOLEAN,
array_length(hf_usb_vid_cam_control_D),
TFS(&tfs_yes_no), (1<<9),
NULL, HFILL }
},
{ &hf_usb_vid_cam_control_D[10],
{ "Zoom (Relative)", "usbvideo.camera.control.D10",
FT_BOOLEAN,
array_length(hf_usb_vid_cam_control_D),
TFS(&tfs_yes_no), (1<<10),
NULL, HFILL }
},
{ &hf_usb_vid_cam_control_D[11],
{ "PanTilt (Absolute)", "usbvideo.camera.control.D11",
FT_BOOLEAN,
array_length(hf_usb_vid_cam_control_D),
TFS(&tfs_yes_no), (1<<11),
NULL, HFILL }
},
{ &hf_usb_vid_cam_control_D[12],
{ "PanTilt (Relative)", "usbvideo.camera.control.D12",
FT_BOOLEAN,
array_length(hf_usb_vid_cam_control_D),
TFS(&tfs_yes_no), (1<<12),
NULL, HFILL }
},
{ &hf_usb_vid_cam_control_D[13],
{ "Roll (Absolute)", "usbvideo.camera.control.D13",
FT_BOOLEAN,
array_length(hf_usb_vid_cam_control_D),
TFS(&tfs_yes_no), (1<<13),
NULL, HFILL }
},
{ &hf_usb_vid_cam_control_D[14],
{ "Roll (Relative)", "usbvideo.camera.control.D14",
FT_BOOLEAN,
array_length(hf_usb_vid_cam_control_D),
TFS(&tfs_yes_no), (1<<14),
NULL, HFILL }
},
{ &hf_usb_vid_cam_control_D[15],
{ "D15", "usbvideo.camera.control.D15",
FT_BOOLEAN,
array_length(hf_usb_vid_cam_control_D),
TFS(&tfs_yes_no), (1<<15),
"Reserved", HFILL }
},
{ &hf_usb_vid_cam_control_D[16],
{ "D16", "usbvideo.camera.control.D16",
FT_BOOLEAN,
array_length(hf_usb_vid_cam_control_D),
TFS(&tfs_yes_no), (1<<16),
"Reserved", HFILL }
},
{ &hf_usb_vid_cam_control_D[17],
{ "Auto Focus", "usbvideo.camera.control.D17",
FT_BOOLEAN,
array_length(hf_usb_vid_cam_control_D),
TFS(&tfs_yes_no), (1<<17),
NULL, HFILL }
},
{ &hf_usb_vid_cam_control_D[18],
{ "Privacy", "usbvideo.camera.control.D18",
FT_BOOLEAN,
array_length(hf_usb_vid_cam_control_D),
TFS(&tfs_yes_no), (1<<18),
NULL, HFILL }
},
{ &hf_usb_vid_cam_control_D[19],
{ "Focus (Simple)", "usbvideo.camera.control.D19",
FT_BOOLEAN,
array_length(hf_usb_vid_cam_control_D),
TFS(&tfs_yes_no), (1<<19),
NULL, HFILL }
},
{ &hf_usb_vid_cam_control_D[20],
{ "Window", "usbvideo.camera.control.D20",
FT_BOOLEAN,
array_length(hf_usb_vid_cam_control_D),
TFS(&tfs_yes_no), (1<<20),
NULL, HFILL }
},
{ &hf_usb_vid_cam_control_D[21],
{ "Region of Interest", "usbvideo.camera.control.D21",
FT_BOOLEAN,
array_length(hf_usb_vid_cam_control_D),
TFS(&tfs_yes_no), (1<<21),
NULL, HFILL }
},
/***** Unit Descriptors *****/
{ &hf_usb_vid_control_ifdesc_unit_id,
{ "bUnitID", "usbvideo.unit.id", FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_usb_vid_num_inputs,
{ "bNrInPins", "usbvideo.unit.numInputs",
FT_UINT8, BASE_DEC, NULL, 0,
"Number of input pins", HFILL }
},
{ &hf_usb_vid_sources,
{ "baSourceID", "usbvideo.unit.sources",
FT_BYTES, BASE_NONE, NULL, 0,
"Input entity IDs", HFILL }
},
/***** Processing Unit Descriptor *****/
{ &hf_usb_vid_iProcessing,
{ "iProcessing", "usbvideo.processor.name", FT_UINT8, BASE_DEC, NULL, 0x0,
"String Descriptor describing this terminal", HFILL }
},
{ &hf_usb_vid_proc_control_D[0],
{ "Brightness", "usbvideo.processor.control.D0",
FT_BOOLEAN, 24, TFS(&tfs_yes_no), (1<<0),
NULL, HFILL }
},
{ &hf_usb_vid_proc_control_D[1],
{ "Contrast", "usbvideo.processor.control.D1",
FT_BOOLEAN, 24, TFS(&tfs_yes_no), (1<<1),
NULL, HFILL }
},
{ &hf_usb_vid_proc_control_D[2],
{ "Hue", "usbvideo.processor.control.D2",
FT_BOOLEAN, 24, TFS(&tfs_yes_no), (1<<2),
NULL, HFILL }
},
{ &hf_usb_vid_proc_control_D[3],
{ "Saturation", "usbvideo.processor.control.D3",
FT_BOOLEAN, 24, TFS(&tfs_yes_no), (1<<3),
NULL, HFILL }
},
{ &hf_usb_vid_proc_control_D[4],
{ "Sharpness", "usbvideo.processor.control.D4",
FT_BOOLEAN, 24, TFS(&tfs_yes_no), (1<<4),
NULL, HFILL }
},
{ &hf_usb_vid_proc_control_D[5],
{ "Gamma", "usbvideo.processor.control.D5",
FT_BOOLEAN, 24, TFS(&tfs_yes_no), (1<<5),
NULL, HFILL }
},
{ &hf_usb_vid_proc_control_D[6],
{ "White Balance Temperature", "usbvideo.processor.control.D6",
FT_BOOLEAN, 24, TFS(&tfs_yes_no), (1<<6),
NULL, HFILL }
},
{ &hf_usb_vid_proc_control_D[7],
{ "White Balance Component", "usbvideo.processor.control.D7",
FT_BOOLEAN, 24, TFS(&tfs_yes_no), (1<<7),
NULL, HFILL }
},
{ &hf_usb_vid_proc_control_D[8],
{ "Backlight Compensation", "usbvideo.processor.control.D8",
FT_BOOLEAN, 24, TFS(&tfs_yes_no), (1<<8),
NULL, HFILL }
},
{ &hf_usb_vid_proc_control_D[9],
{ "Gain", "usbvideo.processor.control.D9",
FT_BOOLEAN, 24, TFS(&tfs_yes_no), (1<<9),
NULL, HFILL }
},
{ &hf_usb_vid_proc_control_D[10],
{ "Power Line Frequency", "usbvideo.processor.control.D10",
FT_BOOLEAN, 24, TFS(&tfs_yes_no), (1<<10),
NULL, HFILL }
},
{ &hf_usb_vid_proc_control_D[11],
{ "Hue, Auto", "usbvideo.processor.control.D11",
FT_BOOLEAN, 24, TFS(&tfs_yes_no), (1<<11),
NULL, HFILL }
},
{ &hf_usb_vid_proc_control_D[12],
{ "White Balance Temperature, Auto", "usbvideo.processor.control.D12",
FT_BOOLEAN, 24, TFS(&tfs_yes_no), (1<<12),
NULL, HFILL }
},
{ &hf_usb_vid_proc_control_D[13],
{ "White Balance Component, Auto", "usbvideo.processor.control.D13",
FT_BOOLEAN, 24, TFS(&tfs_yes_no), (1<<13),
NULL, HFILL }
},
{ &hf_usb_vid_proc_control_D[14],
{ "Digital Multiplier", "usbvideo.processor.control.D14",
FT_BOOLEAN, 24, TFS(&tfs_yes_no), (1<<14),
NULL, HFILL }
},
{ &hf_usb_vid_proc_control_D[15],
{ "Digital Multiplier Limit", "usbvideo.processor.control.D15",
FT_BOOLEAN, 24, TFS(&tfs_yes_no), (1<<15),
"Reserved", HFILL }
},
{ &hf_usb_vid_proc_control_D[16],
{ "Analog Video Standard", "usbvideo.processor.control.D16",
FT_BOOLEAN, 24, TFS(&tfs_yes_no), (1<<16),
"Reserved", HFILL }
},
{ &hf_usb_vid_proc_control_D[17],
{ "Analog Video Lock Status", "usbvideo.processor.control.D17",
FT_BOOLEAN, 24, TFS(&tfs_yes_no), (1<<17),
NULL, HFILL }
},
{ &hf_usb_vid_proc_control_D[18],
{ "Contrast, Auto", "usbvideo.processor.control.D18",
FT_BOOLEAN, 24, TFS(&tfs_yes_no), (1<<18),
NULL, HFILL }
},
{ &hf_usb_vid_proc_standards,
{ "bmVideoStandards", "usbvideo.processor.standards",
FT_UINT8, BASE_HEX, NULL, 0,
"Supported analog video standards", HFILL }
},
{ &hf_usb_vid_proc_standards_D[0],
{ "None", "usbvideo.processor.standards.D0",
FT_BOOLEAN, 8, TFS(&tfs_yes_no), (1<<0),
NULL, HFILL }
},
{ &hf_usb_vid_proc_standards_D[1],
{ "NTSC - 525/60", "usbvideo.processor.standards.D1",
FT_BOOLEAN, 8, TFS(&tfs_yes_no), (1<<1),
NULL, HFILL }
},
{ &hf_usb_vid_proc_standards_D[2],
{ "PAL - 625/50", "usbvideo.processor.standards.D2",
FT_BOOLEAN, 8, TFS(&tfs_yes_no), (1<<2),
NULL, HFILL }
},
{ &hf_usb_vid_proc_standards_D[3],
{ "SECAM - 625/50", "usbvideo.processor.standards.D3",
FT_BOOLEAN, 8, TFS(&tfs_yes_no), (1<<3),
NULL, HFILL }
},
{ &hf_usb_vid_proc_standards_D[4],
{ "NTSC - 625/50", "usbvideo.processor.standards.D4",
FT_BOOLEAN, 8, TFS(&tfs_yes_no), (1<<4),
NULL, HFILL }
},
{ &hf_usb_vid_proc_standards_D[5],
{ "PAL - 525/60", "usbvideo.processor.standards.D5",
FT_BOOLEAN, 8, TFS(&tfs_yes_no), (1<<5),
NULL, HFILL }
},
{ &hf_usb_vid_max_multiplier,
{ "wMaxMultiplier", "usbvideo.processor.maxMultiplier",
FT_UINT16, BASE_DEC, NULL, 0,
"100 x max digital multiplication", HFILL }
},
/***** Selector Unit Descriptor *****/
{ &hf_usb_vid_iSelector,
{ "iSelector", "usbvideo.selector.name", FT_UINT8, BASE_DEC, NULL, 0x0,
"String Descriptor describing this terminal", HFILL }
},
/***** Extension Unit Descriptor *****/
{ &hf_usb_vid_iExtension,
{ "iExtension", "usbvideo.extension.name", FT_UINT8, BASE_DEC, NULL, 0x0,
"String Descriptor describing this terminal", HFILL }
},
{ &hf_usb_vid_exten_guid,
{ "guid", "usbvideo.extension.guid",
FT_GUID, BASE_NONE, NULL, 0,
"Identifier", HFILL }
},
{ &hf_usb_vid_exten_num_controls,
{ "bNumControls", "usbvideo.extension.numControls",
FT_UINT8, BASE_DEC, NULL, 0,
"Number of controls", HFILL }
},
/***** Probe/Commit *****/
{ &hf_usb_vid_probe_hint,
{ "bmHint", "usbvideo.probe.hint",
FT_UINT16, BASE_HEX, NULL, 0,
"Fields to hold constant during negotiation", HFILL }
},
{ &hf_usb_vid_probe_hint_D[0],
{ "dwFrameInterval", "usbvideo.probe.hint.D0",
FT_BOOLEAN, 5, TFS(&probe_hint_meaning), (1<<0),
"Frame Rate", HFILL }
},
{ &hf_usb_vid_probe_hint_D[1],
{ "wKeyFrameRate", "usbvideo.probe.hint.D1",
FT_BOOLEAN, 5, TFS(&probe_hint_meaning), (1<<1),
"Key Frame Rate", HFILL }
},
{ &hf_usb_vid_probe_hint_D[2],
{ "wPFrameRate", "usbvideo.probe.hint.D2",
FT_BOOLEAN, 5, TFS(&probe_hint_meaning), (1<<2),
"P-Frame Rate", HFILL }
},
{ &hf_usb_vid_probe_hint_D[3],
{ "wCompQuality", "usbvideo.probe.hint.D3",
FT_BOOLEAN, 5, TFS(&probe_hint_meaning), (1<<3),
"Compression Quality", HFILL }
},
{ &hf_usb_vid_probe_hint_D[4],
{ "wCompWindowSize", "usbvideo.probe.hint.D4",
FT_BOOLEAN, 5, TFS(&probe_hint_meaning), (1<<4),
"Compression Window Size", HFILL }
},
{ &hf_usb_vid_probe_key_frame_rate,
{ "wKeyFrameRate", "usbvideo.probe.keyFrameRate",
FT_UINT16, BASE_DEC, NULL, 0,
"Key frame rate", HFILL }
},
{ &hf_usb_vid_probe_p_frame_rate,
{ "wPFrameRate", "usbvideo.probe.pFrameRate",
FT_UINT16, BASE_DEC, NULL, 0,
"P frame rate", HFILL }
},
{ &hf_usb_vid_probe_comp_quality,
{ "wCompQuality", "usbvideo.probe.compQuality",
FT_UINT16, BASE_DEC, NULL, 0,
"Compression quality [0-10000]", HFILL }
},
{ &hf_usb_vid_probe_comp_window,
{ "wCompWindow", "usbvideo.probe.compWindow",
FT_UINT16, BASE_DEC, NULL, 0,
"Window size for average bit rate control", HFILL }
},
{ &hf_usb_vid_probe_delay,
{ "wDelay", "usbvideo.probe.delay",
FT_UINT16, BASE_DEC, NULL, 0,
"Latency in ms from capture to USB", HFILL }
},
{ &hf_usb_vid_probe_max_frame_sz,
{ "dwMaxVideoFrameSize", "usbvideo.probe.maxVideoFrameSize",
FT_UINT32, BASE_DEC, NULL, 0,
NULL, HFILL }
},
{ &hf_usb_vid_probe_max_payload_sz,
{ "dwMaxPayloadTransferSize", "usbvideo.probe.maxPayloadTransferSize",
FT_UINT32, BASE_DEC, NULL, 0,
NULL, HFILL }
},
{ &hf_usb_vid_probe_clock_freq,
{ "dwClockFrequency", "usbvideo.probe.clockFrequency",
FT_UINT32, BASE_DEC, NULL, 0,
"Device clock frequency in Hz", HFILL }
},
{ &hf_usb_vid_probe_framing,
{ "bmFramingInfo", "usbvideo.probe.framing",
FT_UINT16, BASE_HEX, NULL, 0,
NULL, HFILL }
},
{ &hf_usb_vid_probe_framing_D[0],
{ "Frame ID required", "usbvideo.probe.framing.D0",
FT_BOOLEAN, 2, TFS(&tfs_yes_no), (1<<0),
NULL, HFILL }
},
{ &hf_usb_vid_probe_framing_D[1],
{ "EOF utilized", "usbvideo.probe.framing.D1",
FT_BOOLEAN, 2, TFS(&tfs_yes_no), (1<<1),
NULL, HFILL }
},
{ &hf_usb_vid_probe_preferred_ver,
{ "bPreferredVersion", "usbvideo.probe.preferredVersion",
FT_UINT8, BASE_DEC, NULL, 0,
"Preferred payload format version", HFILL }
},
{ &hf_usb_vid_probe_min_ver,
{ "bMinVersion", "usbvideo.probe.minVersion",
FT_UINT8, BASE_DEC, NULL, 0,
"Min supported payload format version", HFILL }
},
{ &hf_usb_vid_probe_max_ver,
{ "bPreferredVersion", "usbvideo.probe.maxVer",
FT_UINT8, BASE_DEC, NULL, 0,
"Max supported payload format version", HFILL }
},
{ &hf_usb_vid_control_ifdesc_dwClockFrequency,
{ "dwClockFrequency", "usbvideo.probe.clockFrequency",
FT_UINT32, BASE_DEC, NULL, 0,
"Device clock frequency (Hz) for selected format", HFILL }
},
/***** Format Descriptors *****/
{ &hf_usb_vid_format_index,
{ "bFormatIndex", "usbvideo.format.index",
FT_UINT8, BASE_DEC, NULL, 0,
"Index of this format descriptor", HFILL }
},
{ &hf_usb_vid_format_num_frame_descriptors,
{ "bNumFrameDescriptors", "usbvideo.format.numFrameDescriptors",
FT_UINT8, BASE_DEC, NULL, 0,
"Number of frame descriptors for this format", HFILL }
},
{ &hf_usb_vid_format_guid,
{ "guidFormat", "usbvideo.format.guid",
FT_GUID, BASE_NONE, NULL, 0,
"Stream encoding format", HFILL }
},
{ &hf_usb_vid_format_bits_per_pixel,
{ "bBitsPerPixel", "usbvideo.format.bitsPerPixel",
FT_UINT8, BASE_DEC, NULL, 0,
"Bits per pixel", HFILL }
},
{ &hf_usb_vid_default_frame_index,
{ "bDefaultFrameIndex", "usbvideo.format.defaultFrameIndex",
FT_UINT8, BASE_DEC, NULL, 0,
"Optimum frame index for this stream", HFILL }
},
{ &hf_usb_vid_aspect_ratio_x,
{ "bAspectRatioX", "usbvideo.format.aspectRatioX",
FT_UINT8, BASE_DEC, NULL, 0,
"X dimension of picture aspect ratio", HFILL }
},
{ &hf_usb_vid_aspect_ratio_y,
{ "bAspectRatioY", "usbvideo.format.aspectRatioY",
FT_UINT8, BASE_DEC, NULL, 0,
"Y dimension of picture aspect ratio", HFILL }
},
{ &hf_usb_vid_interlace_flags,
{ "bmInterlaceFlags", "usbvideo.format.interlace",
FT_UINT8, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_usb_vid_is_interlaced,
{ "Interlaced stream", "usbvideo.format.interlace.D0",
FT_BOOLEAN, 8, TFS(&is_interlaced_meaning), (1<<0),
NULL, HFILL }
},
{ &hf_usb_vid_interlaced_fields,
{ "Fields per frame", "usbvideo.format.interlace.D1",
FT_BOOLEAN, 8, TFS(&interlaced_fields_meaning), (1<<1),
NULL, HFILL }
},
{ &hf_usb_vid_field_1_first,
{ "Field 1 first", "usbvideo.format.interlace.D2",
FT_BOOLEAN, 8, TFS(&tfs_yes_no), (1<<2),
NULL, HFILL }
},
{ &hf_usb_vid_field_pattern,
{ "Field pattern", "usbvideo.format.interlace.pattern",
FT_UINT8, BASE_DEC | BASE_EXT_STRING,
&field_pattern_meaning_ext, (3<<4),
NULL, HFILL }
},
{ &hf_usb_vid_copy_protect,
{ "bCopyProtect", "usbvideo.format.copyProtect",
FT_UINT8, BASE_DEC, VALS(copy_protect_meaning), 0,
NULL, HFILL }
},
{ &hf_usb_vid_variable_size,
{ "Variable size", "usbvideo.format.variableSize",
FT_BOOLEAN, BASE_DEC, NULL, 0,
NULL, HFILL }
},
/***** MJPEG Format Descriptor *****/
{ &hf_usb_vid_mjpeg_flags,
{ "bmFlags", "usbvideo.mjpeg.flags",
FT_UINT8, BASE_HEX, NULL, 0,
"Characteristics", HFILL }
},
{ &hf_usb_vid_mjpeg_fixed_samples,
{ "Fixed size samples", "usbvideo.mjpeg.fixed_size",
FT_BOOLEAN, 8, TFS(&tfs_yes_no), (1<<0),
NULL, HFILL }
},
/***** Frame Descriptors *****/
{ &hf_usb_vid_frame_index,
{ "bFrameIndex", "usbvideo.frame.index",
FT_UINT8, BASE_DEC, NULL, 0,
"Index of this frame descriptor", HFILL }
},
{ &hf_usb_vid_frame_capabilities,
{ "bmCapabilities", "usbvideo.frame.capabilities",
FT_UINT8, BASE_HEX, NULL, 0,
"Capabilities", HFILL }
},
{ &hf_usb_vid_frame_stills_supported,
{ "Still image", "usbvideo.frame.stills",
FT_BOOLEAN, 8, TFS(&tfs_supported_not_supported), (1<<0),
NULL, HFILL }
},
{ &hf_usb_vid_frame_interval,
{ "dwFrameInterval", "usbvideo.frame.interval",
FT_UINT32, BASE_DEC, NULL, 0,
"Frame interval multiple of 100 ns", HFILL }
},
{ &hf_usb_vid_frame_fixed_frame_rate,
{ "Fixed frame rate", "usbvideo.frame.fixedRate",
FT_BOOLEAN, 8, TFS(&tfs_yes_no), (1<<1),
NULL, HFILL }
},
{ &hf_usb_vid_frame_width,
{ "wWidth", "usbvideo.frame.width",
FT_UINT16, BASE_DEC, NULL, 0,
"Width of frame in pixels", HFILL }
},
{ &hf_usb_vid_frame_height,
{ "wHeight", "usbvideo.frame.height",
FT_UINT16, BASE_DEC, NULL, 0,
"Height of frame in pixels", HFILL }
},
{ &hf_usb_vid_frame_min_bit_rate,
{ "dwMinBitRate", "usbvideo.frame.minBitRate",
FT_UINT32, BASE_DEC, NULL, 0,
"Minimum bit rate in bps", HFILL }
},
{ &hf_usb_vid_frame_max_bit_rate,
{ "dwMaxBitRate", "usbvideo.frame.maxBitRate",
FT_UINT32, BASE_DEC, NULL, 0,
"Maximum bit rate in bps", HFILL }
},
{ &hf_usb_vid_frame_max_frame_sz,
{ "dwMaxVideoFrameBufferSize", "usbvideo.frame.maxBuffer",
FT_UINT32, BASE_DEC, NULL, 0,
"Maximum bytes per frame", HFILL }
},
{ &hf_usb_vid_frame_default_interval,
{ "dwDefaultFrameInterval", "usbvideo.frame.interval.default",
FT_UINT32, BASE_DEC, NULL, 0,
"Suggested default", HFILL }
},
{ &hf_usb_vid_frame_interval_type,
{ "bFrameIntervalType", "usbvideo.frame.interval.type",
FT_UINT8, BASE_DEC, NULL, 0,
"Frame rate control (continuous/discrete)", HFILL }
},
{ &hf_usb_vid_frame_min_interval,
{ "dwMinFrameInterval", "usbvideo.frame.interval.min",
FT_UINT32, BASE_DEC, NULL, 0,
"Shortest frame interval (* 100 ns)", HFILL }
},
{ &hf_usb_vid_frame_max_interval,
{ "dwMaxFrameInterval", "usbvideo.frame.interval.max",
FT_UINT32, BASE_DEC, NULL, 0,
"Longest frame interval (* 100 ns)", HFILL }
},
{ &hf_usb_vid_frame_step_interval,
{ "dwMinFrameInterval", "usbvideo.frame.interval.step",
FT_UINT32, BASE_DEC, NULL, 0,
"Granularity of frame interval (* 100 ns)", HFILL }
},
{ &hf_usb_vid_frame_bytes_per_line,
{ "dwBytesPerLine", "usbvideo.frame.bytesPerLine",
FT_UINT32, BASE_DEC, NULL, 0,
"Fixed number of bytes per video line", HFILL }
},
/***** Colorformat Descriptor *****/
{ &hf_usb_vid_color_primaries,
{ "bColorPrimaries", "usbvideo.color.primaries",
FT_UINT8, BASE_DEC | BASE_EXT_STRING,
&color_primaries_meaning_ext, 0,
NULL, HFILL }
},
{ &hf_usb_vid_transfer_characteristics,
{ "bTransferCharacteristics", "usbvideo.color.transferCharacteristics",
FT_UINT8, BASE_DEC | BASE_EXT_STRING,
&color_transfer_characteristics_ext, 0,
NULL, HFILL }
},
{ &hf_usb_vid_matrix_coefficients,
{ "bMatrixCoefficients", "usbvideo.color.matrixCoefficients",
FT_UINT8, BASE_DEC | BASE_EXT_STRING,
&matrix_coefficients_meaning_ext, 0,
NULL, HFILL }
},
/***** Video Control Header Descriptor *****/
{ &hf_usb_vid_control_ifdesc_bcdUVC,
{ "bcdUVC", "usbvideo.bcdUVC",
FT_UINT16, BASE_HEX, NULL, 0,
"Video Device Class Specification release number", HFILL }
},
{ &hf_usb_vid_control_ifdesc_bInCollection,
{ "bInCollection", "usbvideo.numStreamingInterfaces",
FT_UINT8, BASE_DEC, NULL, 0,
"Number of VideoStreaming interfaces", HFILL }
},
{ &hf_usb_vid_control_ifdesc_baInterfaceNr,
{ "baInterfaceNr", "usbvideo.streamingInterfaceNumbers",
FT_BYTES, BASE_NONE, NULL, 0,
"Interface numbers of VideoStreaming interfaces", HFILL }},
/***** Video Streaming Input Header Descriptor *****/
{ &hf_usb_vid_streaming_ifdesc_bNumFormats,
{ "bNumFormats", "usbvideo.streaming.numFormats",
FT_UINT8, BASE_DEC, NULL, 0,
"Number of video payload format descriptors", HFILL }
},
{ &hf_usb_vid_streaming_bmInfo,
{ "bmInfo", "usbvideo.streaming.info",
FT_UINT8, BASE_HEX, NULL, 0,
"Capabilities", HFILL }
},
{ &hf_usb_vid_streaming_info_D[0],
{ "Dynamic Format Change", "usbvideo.streaming.info.D0",
FT_BOOLEAN, 8, TFS(&tfs_yes_no), (1<<0),
"Dynamic Format Change", HFILL }
},
{ &hf_usb_vid_streaming_control_D[0],
{ "wKeyFrameRate", "usbvideo.streaming.control.D0",
FT_BOOLEAN, 6, TFS(&tfs_yes_no), (1<<0),
"Probe and Commit support", HFILL }
},
{ &hf_usb_vid_streaming_control_D[1],
{ "wPFrameRate", "usbvideo.streaming.control.D1",
FT_BOOLEAN, 6, TFS(&tfs_yes_no), (1<<1),
"Probe and Commit support", HFILL }
},
{ &hf_usb_vid_streaming_control_D[2],
{ "wCompQuality", "usbvideo.streaming.control.D2",
FT_BOOLEAN, 6, TFS(&tfs_yes_no), (1<<2),
"Probe and Commit support", HFILL }
},
{ &hf_usb_vid_streaming_control_D[3],
{ "wCompWindowSize", "usbvideo.streaming.control.D3",
FT_BOOLEAN, 6, TFS(&tfs_yes_no), (1<<3),
"Probe and Commit support", HFILL }
},
{ &hf_usb_vid_streaming_control_D[4],
{ "Generate Key Frame", "usbvideo.streaming.control.D4",
FT_BOOLEAN, 6, TFS(&tfs_yes_no), (1<<4),
"Probe and Commit support", HFILL }
},
{ &hf_usb_vid_streaming_control_D[5],
{ "Update Frame Segment", "usbvideo.streaming.control.D5",
FT_BOOLEAN, 6, TFS(&tfs_yes_no), (1<<5),
"Probe and Commit support", HFILL }
},
{ &hf_usb_vid_streaming_terminal_link,
{ "bTerminalLink", "usbvideo.streaming.terminalLink", FT_UINT8, BASE_DEC, NULL, 0x0,
"Output terminal ID", HFILL }
},
{ &hf_usb_vid_streaming_still_capture_method,
{ "bStillCaptureMethod", "usbvideo.streaming.stillCaptureMethod",
FT_UINT8, BASE_DEC | BASE_EXT_STRING,
&vs_still_capture_methods_ext, 0,
"Method of Still Image Capture", HFILL }
},
{ &hf_usb_vid_streaming_trigger_support,
{ "HW Triggering", "usbvideo.streaming.triggerSupport",
FT_BOOLEAN, BASE_DEC, TFS(&tfs_supported_not_supported), 0,
"Is HW triggering supported", HFILL }
},
{ &hf_usb_vid_streaming_trigger_usage,
{ "bTriggerUsage", "usbvideo.streaming.triggerUsage",
FT_UINT8, BASE_DEC, VALS(vs_trigger_usage), 0,
"How host SW should respond to trigger", HFILL }
},
/***** Interrupt URB *****/
{ &hf_usb_vid_interrupt_bStatusType,
{ "Status Type", "usbvideo.interrupt.statusType",
FT_UINT8, BASE_HEX, VALS(interrupt_status_types), 0xF,
NULL, HFILL }
},
{ &hf_usb_vid_interrupt_bAttribute,
{ "Change Type", "usbvideo.interrupt.attribute",
FT_UINT8, BASE_HEX | BASE_EXT_STRING,
&control_change_types_ext, 0,
"Type of control change", HFILL }
},
{ &hf_usb_vid_interrupt_bOriginator,
{ "Originator", "usbvideo.interrupt.originator",
FT_UINT8, BASE_DEC, NULL, 0,
"ID of the entity that reports this interrupt", HFILL }
},
{ &hf_usb_vid_control_interrupt_bEvent,
{ "Event", "usbvideo.interrupt.controlEvent",
FT_UINT8, BASE_HEX, VALS(control_interrupt_events), 0,
"Type of event", HFILL }
},
/***** Video Control Endpoint Descriptor *****/
{ &hf_usb_vid_epdesc_subtype,
{ "Subtype", "usbvideo.ep.descriptorSubType",
FT_UINT8, BASE_DEC, VALS(vc_ep_descriptor_subtypes), 0,
"Descriptor Subtype", HFILL }
},
{ &hf_usb_vid_epdesc_max_transfer_sz,
{ "wMaxTransferSize", "usbvideo.ep.maxInterruptSize", FT_UINT16,
BASE_DEC, NULL, 0x0, "Max interrupt structure size", HFILL }
},
/***** Fields used in multiple contexts *****/
{ &hf_usb_vid_ifdesc_wTotalLength,
{ "wTotalLength", "usbvideo.totalLength",
FT_UINT16, BASE_DEC, NULL, 0,
"Video interface descriptor size", HFILL }
},
{ &hf_usb_vid_bControlSize,
{ "bControlSize", "usbvideo.bmcontrolSize",
FT_UINT8, BASE_DEC, NULL, 0,
"Size of bmControls field", HFILL }
},
{ &hf_usb_vid_bmControl,
{ "bmControl", "usbvideo.availableControls",
FT_UINT32, BASE_HEX, NULL, 0,
"Available controls", HFILL }
},
{ &hf_usb_vid_bmControl_bytes,
{ "bmControl", "usbvideo.availableControls.bytes",
FT_BYTES, BASE_NONE, NULL, 0,
"Available controls", HFILL }
},
{ &hf_usb_vid_control_ifdesc_src_id,
{ "bSourceID", "usbvideo.sourceID", FT_UINT8, BASE_DEC, NULL, 0x0,
"Entity to which this terminal/unit is connected", HFILL }
},
/**********/
{ &hf_usb_vid_control_ifdesc_subtype,
{ "Subtype", "usbvideo.control.descriptorSubType",
FT_UINT8, BASE_DEC | BASE_EXT_STRING,
&vc_if_descriptor_subtypes_ext, 0,
"Descriptor Subtype", HFILL }
},
{ &hf_usb_vid_streaming_ifdesc_subtype,
{ "Subtype", "usbvideo.streaming.descriptorSubType",
FT_UINT8, BASE_DEC | BASE_EXT_STRING,
&vs_if_descriptor_subtypes_ext, 0,
"Descriptor Subtype", HFILL }
},
{ &hf_usb_vid_descriptor_data,
{ "Descriptor data", "usbvideo.descriptor_data", FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_usb_vid_control_data,
{ "Control data", "usbvideo.control_data", FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_usb_vid_control_value,
{ "Control value", "usbvideo.control_value", FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_usb_vid_value_data,
{ "Value data", "usbvideo.value_data", FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
};
static gint *usb_vid_subtrees[] = {
&ett_usb_vid,
&ett_descriptor_video_endpoint,
&ett_descriptor_video_control,
&ett_descriptor_video_streaming,
&ett_camera_controls,
&ett_processing_controls,
&ett_streaming_controls,
&ett_streaming_info,
&ett_interlace_flags,
&ett_frame_capability_flags,
&ett_mjpeg_flags,
&ett_video_probe,
&ett_probe_hint,
&ett_probe_framing,
&ett_video_standards,
&ett_control_capabilities
};
static ei_register_info ei[] = {
{ &ei_usb_vid_subtype_unknown, { "usbvideo.subtype.unknown", PI_UNDECODED, PI_WARN, "Unknown VC subtype", EXPFILL }},
{ &ei_usb_vid_bitmask_len, { "usbvideo.bitmask_len_error", PI_UNDECODED, PI_WARN, "Only least-significant bytes decoded", EXPFILL }},
};
expert_module_t* expert_usb_vid;
proto_usb_vid = proto_register_protocol("USB Video", "USBVIDEO", "usbvideo");
proto_register_field_array(proto_usb_vid, hf, array_length(hf));
proto_register_subtree_array(usb_vid_subtrees, array_length(usb_vid_subtrees));
expert_usb_vid = expert_register_protocol(proto_usb_vid);
expert_register_field_array(expert_usb_vid, ei, array_length(ei));
}
void
proto_reg_handoff_usb_vid(void)
{
dissector_handle_t usb_vid_control_handle;
dissector_handle_t usb_vid_descriptor_handle;
dissector_handle_t usb_vid_interrupt_handle;
usb_vid_control_handle = create_dissector_handle(dissect_usb_vid_control, proto_usb_vid);
dissector_add_uint("usb.control", IF_CLASS_VIDEO, usb_vid_control_handle);
usb_vid_descriptor_handle = create_dissector_handle(dissect_usb_vid_descriptor, proto_usb_vid);
dissector_add_uint("usb.descriptor", IF_CLASS_VIDEO, usb_vid_descriptor_handle);
usb_vid_interrupt_handle = create_dissector_handle(dissect_usb_vid_interrupt, proto_usb_vid);
dissector_add_uint("usb.interrupt", IF_CLASS_VIDEO, usb_vid_interrupt_handle);
}
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* vi: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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