include/uapi/linux/cec-funcs.h

Source file repositories/reference/linux-study-clean/include/uapi/linux/cec-funcs.h

File Facts

System
Linux kernel
Corpus path
include/uapi/linux/cec-funcs.h
Extension
.h
Size
58967 bytes
Lines
2141
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

struct cec_op_arib_data {
	__u16 transport_id;
	__u16 service_id;
	__u16 orig_network_id;
};

struct cec_op_atsc_data {
	__u16 transport_id;
	__u16 program_number;
};

struct cec_op_dvb_data {
	__u16 transport_id;
	__u16 service_id;
	__u16 orig_network_id;
};

struct cec_op_channel_data {
	__u8 channel_number_fmt;
	__u16 major;
	__u16 minor;
};

struct cec_op_digital_service_id {
	__u8 service_id_method;
	__u8 dig_bcast_system;
	union {
		struct cec_op_arib_data arib;
		struct cec_op_atsc_data atsc;
		struct cec_op_dvb_data dvb;
		struct cec_op_channel_data channel;
	};
};

struct cec_op_record_src {
	__u8 type;
	union {
		struct cec_op_digital_service_id digital;
		struct {
			__u8 ana_bcast_type;
			__u16 ana_freq;
			__u8 bcast_system;
		} analog;
		struct {
			__u8 plug;
		} ext_plug;
		struct {
			__u16 phys_addr;
		} ext_phys_addr;
	};
};

static inline void cec_set_digital_service_id(__u8 *msg,
	      const struct cec_op_digital_service_id *digital)
{
	*msg++ = (digital->service_id_method << 7) | digital->dig_bcast_system;
	if (digital->service_id_method == CEC_OP_SERVICE_ID_METHOD_BY_CHANNEL) {
		*msg++ = (digital->channel.channel_number_fmt << 2) |
			 (digital->channel.major >> 8);
		*msg++ = digital->channel.major & 0xff;
		*msg++ = digital->channel.minor >> 8;
		*msg++ = digital->channel.minor & 0xff;
		*msg++ = 0;
		*msg++ = 0;
		return;
	}
	switch (digital->dig_bcast_system) {
	case CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ATSC_GEN:
	case CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ATSC_CABLE:
	case CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ATSC_SAT:
	case CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ATSC_T:
		*msg++ = digital->atsc.transport_id >> 8;
		*msg++ = digital->atsc.transport_id & 0xff;
		*msg++ = digital->atsc.program_number >> 8;
		*msg++ = digital->atsc.program_number & 0xff;
		*msg++ = 0;
		*msg++ = 0;
		break;
	default:
		*msg++ = digital->dvb.transport_id >> 8;
		*msg++ = digital->dvb.transport_id & 0xff;
		*msg++ = digital->dvb.service_id >> 8;
		*msg++ = digital->dvb.service_id & 0xff;
		*msg++ = digital->dvb.orig_network_id >> 8;
		*msg++ = digital->dvb.orig_network_id & 0xff;
		break;
	}
}

static inline void cec_get_digital_service_id(const __u8 *msg,

Annotation

Implementation Notes