atsc_psip_section.c

关于dvb的应用程序代码

#include "atsc_psip_section.h"

struct ATSC_extended_channel_name_descriptor read_ATSC_extended_channel_name_descriptor(const u8 *b)
{
	struct ATSC_extended_channel_name_descriptor v;
	v.descriptor_tag            = getBits(b,  0, 8);
	v.descriptor_length         = getBits(b,  8, 8);
	v.TODO                      = getBits(b, 16, 1);
	return v;
}

struct ATSC_service_location_descriptor read_ATSC_service_location_descriptor(const u8 *b)
{
	struct ATSC_service_location_descriptor v;
	v.descriptor_tag            = getBits(b,  0, 8);
	v.descriptor_length         = getBits(b,  8, 8);
	v.reserved                  = getBits(b, 16, 3);
	v.PCR_PID                   = getBits(b, 19,13);
	v.number_elements           = getBits(b, 32, 8);
	return v;
}

struct ATSC_service_location_element read_ATSC_service_location_element(const u8 *b)
{
	struct ATSC_service_location_element v;
	v.stream_type               = getBits(b,  0, 8);
	v.reserved                  = getBits(b,  8, 3);
	v.elementary_PID            = getBits(b, 11,13);
	v.ISO_639_language_code     = getBits(b, 24,24);
	return v;
}

struct tvct_channel read_tvct_channel(const u8 *b)
{
	struct tvct_channel v;
	v.short_name0               = getBits(b,  0,16);
	v.short_name1               = getBits(b, 16,16);
	v.short_name2               = getBits(b, 32,16);
	v.short_name3               = getBits(b, 48,16);
	v.short_name4               = getBits(b, 64,16);
	v.short_name5               = getBits(b, 80,16);
	v.short_name6               = getBits(b, 96,16);
	v.reserved0                 = getBits(b,112, 4);
	v.major_channel_number      = getBits(b,116,10);
	v.minor_channel_number      = getBits(b,126,10);
	v.modulation_mode           = getBits(b,136, 8);
	v.carrier_frequency         = getBits(b,144,32);
	v.channel_TSID              = getBits(b,176,16);
	v.program_number            = getBits(b,192,16);
	v.ETM_location              = getBits(b,208, 2);
	v.access_controlled         = getBits(b,210, 1);
	v.hidden                    = getBits(b,211, 1);
	v.reserved1                 = getBits(b,212, 2);
	v.hide_guide                = getBits(b,214, 1);
	v.reserved2                 = getBits(b,215, 3);
	v.service_type              = getBits(b,218, 6);
	v.source_id                 = getBits(b,224,16);
	v.reserved3                 = getBits(b,240, 6);
	v.descriptors_length        = getBits(b,246,10);
	return v;
}