summaryrefslogtreecommitdiffstats
path: root/epan/dissectors/packet-usb-video.c
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:34:10 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:34:10 +0000
commite4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc (patch)
tree68cb5ef9081156392f1dd62a00c6ccc1451b93df /epan/dissectors/packet-usb-video.c
parentInitial commit. (diff)
downloadwireshark-e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc.tar.xz
wireshark-e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc.zip
Adding upstream version 4.2.2.upstream/4.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'epan/dissectors/packet-usb-video.c')
-rw-r--r--epan/dissectors/packet-usb-video.c3266
1 files changed, 3266 insertions, 0 deletions
diff --git a/epan/dissectors/packet-usb-video.c b/epan/dissectors/packet-usb-video.c
new file mode 100644
index 00000000..5e9d632c
--- /dev/null
+++ b/epan/dissectors/packet-usb-video.c
@@ -0,0 +1,3266 @@
+/* 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 */
+
+/* dissector handles */
+static dissector_handle_t usb_vid_control_handle;
+static dissector_handle_t usb_vid_descriptor_handle;
+static dissector_handle_t usb_vid_interrupt_handle;
+
+/* 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 */
+ proto_item_append_text(desc_item, ": %s", tvb_format_text(wmem_packet_scope(), tvb, offset, 4));
+
+ 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(FT_IS_INT(hfinfo->type) || FT_IS_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_UINT8, 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,
+ { "bMaxVersion", "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));
+
+ usb_vid_control_handle = register_dissector("usbvideo.control", dissect_usb_vid_control, proto_usb_vid);
+ usb_vid_descriptor_handle = register_dissector("usbvideo.descriptor", dissect_usb_vid_descriptor, proto_usb_vid);
+ usb_vid_interrupt_handle = register_dissector("usbvideo.interrupt", dissect_usb_vid_interrupt, proto_usb_vid);
+}
+
+void
+proto_reg_handoff_usb_vid(void)
+{
+ dissector_add_uint("usb.control", IF_CLASS_VIDEO, usb_vid_control_handle);
+ dissector_add_uint("usb.descriptor", IF_CLASS_VIDEO, usb_vid_descriptor_handle);
+ 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:
+ */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-18 07:06:51 +0000