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foobar2000/helpers/file_info_const_impl.cpp
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287
foobar2000/helpers/file_info_const_impl.cpp
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#include "stdafx.h"
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#include "file_info_const_impl.h"
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// presorted - do not change without a proper strcmp resort
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static const char * const standard_fieldnames[] = {
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"ALBUM","ALBUM ARTIST","ARTIST","Album","Album Artist","Artist","COMMENT","Comment","DATE","DISCNUMBER","Date",
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"Discnumber","GENRE","Genre","TITLE","TOTALTRACKS","TRACKNUMBER","Title","TotalTracks","Totaltracks","TrackNumber",
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"Tracknumber","album","album artist","artist","comment","date","discnumber","genre","title","totaltracks","tracknumber",
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};
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// presorted - do not change without a proper strcmp resort
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static const char * const standard_infonames[] = {
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"bitrate","bitspersample","channels","codec","codec_profile","encoding","samplerate","tagtype","tool",
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};
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static const char * optimize_fieldname(const char * p_string) {
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t_size index;
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if (!pfc::binarySearch<pfc::comparator_strcmp>::run(standard_fieldnames,0,PFC_TABSIZE(standard_fieldnames),p_string,index)) return NULL;
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return standard_fieldnames[index];
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}
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static const char * optimize_infoname(const char * p_string) {
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t_size index;
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if (!pfc::binarySearch<pfc::comparator_strcmp>::run(standard_infonames,0,PFC_TABSIZE(standard_infonames),p_string,index)) return NULL;
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return standard_infonames[index];
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}
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/*
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order of things
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meta entries
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meta value map
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info entries
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string buffer
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*/
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inline static char* stringbuffer_append(char * & buffer,const char * value)
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{
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char * ret = buffer;
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while(*value) *(buffer++) = *(value++);
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*(buffer++) = 0;
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return ret;
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}
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#ifdef __file_info_const_impl_have_hintmap__
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namespace {
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class sort_callback_hintmap_impl : public pfc::sort_callback
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{
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public:
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sort_callback_hintmap_impl(const file_info_const_impl::meta_entry * p_meta,file_info_const_impl::t_index * p_hintmap)
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: m_meta(p_meta), m_hintmap(p_hintmap)
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{
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}
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int compare(t_size p_index1, t_size p_index2) const
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{
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// profiler(sort_callback_hintmap_impl_compare);
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return pfc::stricmp_ascii(m_meta[m_hintmap[p_index1]].m_name,m_meta[m_hintmap[p_index2]].m_name);
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}
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void swap(t_size p_index1, t_size p_index2)
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{
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pfc::swap_t<file_info_const_impl::t_index>(m_hintmap[p_index1],m_hintmap[p_index2]);
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}
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private:
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const file_info_const_impl::meta_entry * m_meta;
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file_info_const_impl::t_index * m_hintmap;
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};
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class bsearch_callback_hintmap_impl// : public pfc::bsearch_callback
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{
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public:
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bsearch_callback_hintmap_impl(
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const file_info_const_impl::meta_entry * p_meta,
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const file_info_const_impl::t_index * p_hintmap,
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const char * p_name,
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t_size p_name_length)
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: m_meta(p_meta), m_hintmap(p_hintmap), m_name(p_name), m_name_length(p_name_length)
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{
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}
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inline int test(t_size p_index) const
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{
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return pfc::stricmp_ascii_ex(m_meta[m_hintmap[p_index]].m_name,~0,m_name,m_name_length);
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}
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private:
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const file_info_const_impl::meta_entry * m_meta;
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const file_info_const_impl::t_index * m_hintmap;
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const char * m_name;
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t_size m_name_length;
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};
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}
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#endif//__file_info_const_impl_have_hintmap__
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void file_info_const_impl::copy(const file_info & p_source)
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{
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// profiler(file_info_const_impl__copy);
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t_size meta_size = 0;
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t_size info_size = 0;
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t_size valuemap_size = 0;
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t_size stringbuffer_size = 0;
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#ifdef __file_info_const_impl_have_hintmap__
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t_size hintmap_size = 0;
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#endif
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const char * optbuf[64];
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size_t optwalk = 0;
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{
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// profiler(file_info_const_impl__copy__pass1);
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t_size index;
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m_meta_count = pfc::downcast_guarded<t_index>(p_source.meta_get_count());
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meta_size = m_meta_count * sizeof(meta_entry);
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#ifdef __file_info_const_impl_have_hintmap__
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hintmap_size = (m_meta_count > hintmap_cutoff) ? m_meta_count * sizeof(t_index) : 0;
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#endif//__file_info_const_impl_have_hintmap__
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for(index = 0; index < m_meta_count; index++ )
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{
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{
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const char * name = p_source.meta_enum_name(index);
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const char * opt = optimize_fieldname(name);
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if (optwalk < PFC_TABSIZE(optbuf)) optbuf[optwalk++] = opt;
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if (opt == NULL) stringbuffer_size += strlen(name) + 1;
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}
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t_size val; const t_size val_max = p_source.meta_enum_value_count(index);
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if (val_max == 1)
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{
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stringbuffer_size += strlen(p_source.meta_enum_value(index,0)) + 1;
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}
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else
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{
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valuemap_size += val_max * sizeof(char*);
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for(val = 0; val < val_max; val++ )
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{
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stringbuffer_size += strlen(p_source.meta_enum_value(index,val)) + 1;
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}
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}
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}
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m_info_count = pfc::downcast_guarded<t_index>(p_source.info_get_count());
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info_size = m_info_count * sizeof(info_entry);
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for(index = 0; index < m_info_count; index++ )
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{
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const char * name = p_source.info_enum_name(index);
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const char * opt = optimize_infoname(name);
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if (optwalk < PFC_TABSIZE(optbuf)) optbuf[optwalk++] = opt;
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if (opt == NULL) stringbuffer_size += strlen(name) + 1;
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stringbuffer_size += strlen(p_source.info_enum_value(index)) + 1;
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}
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}
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{
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// profiler(file_info_const_impl__copy__alloc);
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m_buffer.set_size(
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#ifdef __file_info_const_impl_have_hintmap__
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hintmap_size +
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#endif
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meta_size + info_size + valuemap_size + stringbuffer_size);
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}
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char * walk = m_buffer.get_ptr();
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#ifdef __file_info_const_impl_have_hintmap__
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t_index* hintmap = (hintmap_size > 0) ? (t_index*) walk : NULL;
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walk += hintmap_size;
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#endif
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meta_entry * meta = (meta_entry*) walk;
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walk += meta_size;
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char ** valuemap = (char**) walk;
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walk += valuemap_size;
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info_entry * info = (info_entry*) walk;
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walk += info_size;
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char * stringbuffer = walk;
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m_meta = meta;
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m_info = info;
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#ifdef __file_info_const_impl_have_hintmap__
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m_hintmap = hintmap;
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#endif
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optwalk = 0;
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{
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// profiler(file_info_const_impl__copy__pass2);
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t_size index;
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for( index = 0; index < m_meta_count; index ++ )
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{
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t_size val; const t_size val_max = p_source.meta_enum_value_count(index);
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{
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const char * name = p_source.meta_enum_name(index);
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const char * name_opt;
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if (optwalk < PFC_TABSIZE(optbuf)) name_opt = optbuf[optwalk++];
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else name_opt = optimize_fieldname(name);
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if (name_opt == NULL)
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meta[index].m_name = stringbuffer_append(stringbuffer, name );
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else
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meta[index].m_name = name_opt;
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}
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meta[index].m_valuecount = val_max;
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if (val_max == 1)
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{
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meta[index].m_valuemap = reinterpret_cast<const char * const *>(stringbuffer_append(stringbuffer, p_source.meta_enum_value(index,0) ));
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}
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else
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{
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meta[index].m_valuemap = valuemap;
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for( val = 0; val < val_max ; val ++ )
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*(valuemap ++ ) = stringbuffer_append(stringbuffer, p_source.meta_enum_value(index,val) );
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}
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}
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for( index = 0; index < m_info_count; index ++ )
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{
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const char * name = p_source.info_enum_name(index);
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const char * name_opt;
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if (optwalk < PFC_TABSIZE(optbuf)) name_opt = optbuf[optwalk++];
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else name_opt = optimize_infoname(name);
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if (name_opt == NULL)
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info[index].m_name = stringbuffer_append(stringbuffer, name );
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else
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info[index].m_name = name_opt;
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info[index].m_value = stringbuffer_append(stringbuffer, p_source.info_enum_value(index) );
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}
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}
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m_length = p_source.get_length();
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m_replaygain = p_source.get_replaygain();
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#ifdef __file_info_const_impl_have_hintmap__
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if (hintmap != NULL) {
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// profiler(file_info_const_impl__copy__hintmap);
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for(t_size n=0;n<m_meta_count;n++) hintmap[n]= (t_index) n;
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sort_callback_hintmap_impl cb(meta,hintmap);
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pfc::sort(cb,m_meta_count);
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}
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#endif//__file_info_const_impl_have_hintmap__
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}
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void file_info_const_impl::reset()
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{
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m_meta_count = m_info_count = 0; m_length = 0; m_replaygain.reset();
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}
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t_size file_info_const_impl::meta_find_ex(const char * p_name,t_size p_name_length) const
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{
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#ifdef __file_info_const_impl_have_hintmap__
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if (m_hintmap != NULL) {
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t_size result = ~0;
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if (!pfc::bsearch_inline_t(m_meta_count,bsearch_callback_hintmap_impl(m_meta,m_hintmap,p_name,p_name_length),result)) return ~0;
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else return m_hintmap[result];
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} else {
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return file_info::meta_find_ex(p_name,p_name_length);
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}
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#else
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return file_info::meta_find_ex(p_name,p_name_length);
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#endif
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}
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t_size file_info_const_impl::meta_enum_value_count(t_size p_index) const
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{
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return m_meta[p_index].m_valuecount;
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}
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const char* file_info_const_impl::meta_enum_value(t_size p_index,t_size p_value_number) const
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{
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const meta_entry & entry = m_meta[p_index];
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if (entry.m_valuecount == 1)
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return reinterpret_cast<const char*>(entry.m_valuemap);
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else
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return entry.m_valuemap[p_value_number];
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}
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