C++ file_info::get_length方法代码示例

void file_info::copy(const file_info & p_source)
{
    if (&p_source != this) {
        copy_meta(p_source);
        copy_info(p_source);
        set_length(p_source.get_length());
        set_replaygain(p_source.get_replaygain());
    }
}

void file_info::merge_fallback(const file_info & source) {
	set_replaygain( replaygain_info::g_merge(get_replaygain(), source.get_replaygain() ) );
	if (get_length() <= 0) set_length(source.get_length());
	t_size count = source.info_get_count();
	for(t_size infoWalk = 0; infoWalk < count; ++infoWalk) {
		const char * name = source.info_enum_name(infoWalk);
		if (!info_exists(name)) __info_add_unsafe(name, source.info_enum_value(infoWalk));
	}
	count = source.meta_get_count();
	for(t_size metaWalk = 0; metaWalk < count; ++metaWalk) {
		const char * name = source.meta_enum_name(metaWalk);
		if (!meta_exists(name)) _copy_meta_single_nocheck(source, metaWalk);
	}
}

//.........这里部分代码省略.........

				for(val = 0; val < val_max; val++ )
				{
					stringbuffer_size += strlen(p_source.meta_enum_value(index,val)) + 1;
				}
			}
		}

		m_info_count = pfc::downcast_guarded<t_index>(p_source.info_get_count());
		info_size = m_info_count * sizeof(info_entry);
		for(index = 0; index < m_info_count; index++ )
		{
			const char * name = p_source.info_enum_name(index);
			if (optimize_infoname(name) == NULL) stringbuffer_size += strlen(name) + 1;
			stringbuffer_size += strlen(p_source.info_enum_value(index)) + 1;
		}
	}


	{
//		profiler(file_info_const_impl__copy__alloc);
		m_buffer.set_size(
#ifdef __file_info_const_impl_have_hintmap__
			hintmap_size + 
#endif
			meta_size + info_size + valuemap_size + stringbuffer_size);
	}

	char * walk = m_buffer.get_ptr();

#ifdef __file_info_const_impl_have_hintmap__
	t_index* hintmap = (hintmap_size > 0) ? (t_index*) walk : NULL;
	walk += hintmap_size;
#endif
	meta_entry * meta = (meta_entry*) walk;
	walk += meta_size;
	char ** valuemap = (char**) walk;
	walk += valuemap_size;
	info_entry * info = (info_entry*) walk;
	walk += info_size;
	char * stringbuffer = walk;

	m_meta = meta;
	m_info = info;
#ifdef __file_info_const_impl_have_hintmap__
	m_hintmap = hintmap;
#endif

	{
//		profiler(file_info_const_impl__copy__pass2);
		t_size index;
		for( index = 0; index < m_meta_count; index ++ )
		{
			t_size val; const t_size val_max = p_source.meta_enum_value_count(index);

			{
				const char * name = p_source.meta_enum_name(index);
				const char * name_opt = optimize_fieldname(name);
				if (name_opt == NULL)
					meta[index].m_name = stringbuffer_append(stringbuffer, name );
				else
					meta[index].m_name = name_opt;
			}
			
			meta[index].m_valuecount = val_max;

			if (val_max == 1)
			{
				meta[index].m_valuemap = reinterpret_cast<const char * const *>(stringbuffer_append(stringbuffer, p_source.meta_enum_value(index,0) ));
			}
			else
			{
				meta[index].m_valuemap = valuemap;
				for( val = 0; val < val_max ; val ++ )
					*(valuemap ++ ) = stringbuffer_append(stringbuffer, p_source.meta_enum_value(index,val) );
			}
		}

		for( index = 0; index < m_info_count; index ++ )
		{
			const char * name = p_source.info_enum_name(index);
			const char * name_opt = optimize_infoname(name);
			if (name_opt == NULL)
				info[index].m_name = stringbuffer_append(stringbuffer, name );
			else
				info[index].m_name = name_opt;
			info[index].m_value = stringbuffer_append(stringbuffer, p_source.info_enum_value(index) );
		}
	}

	m_length = p_source.get_length();
	m_replaygain = p_source.get_replaygain();
#ifdef __file_info_const_impl_have_hintmap__
	if (hintmap != NULL) {
//		profiler(file_info_const_impl__copy__hintmap);
		for(t_size n=0;n<m_meta_count;n++) hintmap[n]=n;
		pfc::sort(sort_callback_hintmap_impl(meta,hintmap),m_meta_count);
	}
#endif//__file_info_const_impl_have_hintmap__
}

void embeddedcue_metadata_manager::set_tag(file_info const & p_info) {
	m_content.remove_all();
	
	{
		track_record & track0 = m_content.find_or_add((unsigned)0);
		track0.m_info.from_info(p_info);
		track0.m_info.m_info.set("cue_embedded","no");
	}
	
	

	const char * cuesheet = p_info.meta_get("cuesheet",0);
	if (cuesheet == NULL) {
		return;
	}

	//processing order
	//1. cuesheet content
	//2. overwrite with global metadata from the tag
	//2. overwrite with local metadata from the tag

	{
		cue_creator::t_entry_list entries;
		try {
			cue_parser::parse_full(cuesheet,entries);
		} catch(exception_io_data const & e) {
			console::print(e.what());
			return;
		}

		for(cue_creator::t_entry_list::const_iterator iter = entries.first(); iter.is_valid(); ) {
			cue_creator::t_entry_list::const_iterator next = iter;
			++next;
			track_record & entry = m_content.find_or_add(iter->m_track_number);
			entry.m_file = iter->m_file;
			entry.m_flags = iter->m_flags;
			entry.m_index_list = iter->m_index_list;
			entry.m_info.from_info(iter->m_infos);
			entry.m_info.from_info_overwrite_info(p_info);
			entry.m_info.m_info.set("cue_embedded","yes");
			double begin = entry.m_index_list.start(), end = next.is_valid() ? next->m_index_list.start() : p_info.get_length();
			if (end <= begin) throw exception_io_data();
			entry.m_info.set_length(end - begin);
			iter = next;
		}
	}
	
	for(t_size metawalk = 0, metacount = p_info.meta_get_count(); metawalk < metacount; ++metawalk) {
		const char * name = p_info.meta_enum_name(metawalk);
		const t_size valuecount = p_info.meta_enum_value_count(metawalk);
		if (valuecount > 0 && !is_reserved_meta_entry(name) && is_global_meta_entry(name)) {
			__set_tag_global_field_relay relay(p_info,metawalk);
			m_content.enumerate(relay);
		}
	}

	{
		pfc::string8_fastalloc namebuffer;
		for(t_size metawalk = 0, metacount = p_info.meta_get_count(); metawalk < metacount; ++metawalk) {
			const char * name = p_info.meta_enum_name(metawalk);
			const t_size valuecount = p_info.meta_enum_value_count(metawalk);
			unsigned trackno;
			if (valuecount > 0 && !is_reserved_meta_entry(name) && resolve_cue_meta_name(name,namebuffer,trackno)) {
				track_record * rec = m_content.query_ptr(trackno);
				if (rec != NULL) {
					rec->m_info.transfer_meta_entry(namebuffer,p_info,metawalk);
				}
			}
		}
	}
}