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Diffstat (limited to 'src/modules/mediaplayer/mp_mp3.cpp')
| -rw-r--r-- | src/modules/mediaplayer/mp_mp3.cpp | 458 |
1 files changed, 0 insertions, 458 deletions
diff --git a/src/modules/mediaplayer/mp_mp3.cpp b/src/modules/mediaplayer/mp_mp3.cpp deleted file mode 100644 index efdc0b473..000000000 --- a/src/modules/mediaplayer/mp_mp3.cpp +++ /dev/null @@ -1,458 +0,0 @@ -//============================================================================= -// -// File : mp_mp3.cpp -// Creation date : Fri Mar 25 20:01:25 2005 GMT by Szymon Stefanek -// -// This file is part of the KVIrc irc client distribution -// Copyright (C) 2005-2010 Szymon Stefanek (pragma at kvirc dot net) -// -// This file is based on the mp3tech.c. It is released under the original -// license and the original copyright notice follows. -// -// mp3tech.c -// -// Copyright (C) 2000 Cedric Tefft <cedric@earthling.net> -// -// This program is free software; you can redistribute it and/or modify -// it under the terms of the GNU General Public License as published by -// the Free Software Foundation; either version 2 of the License, or -// (at your option) any later version. -// -// This program is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU General Public License for more details. -// -// You should have received a copy of the GNU General Public License -// along with this program; if not, write to the Free Software Foundation -// Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. -// -// This file is based in part on: -// -// * MP3Info 0.5 by Ricardo Cerqueira <rmc@rccn.net> -// * MP3Stat 0.9 by Ed Sweetman <safemode@voicenet.com> and -// Johannes Overmann <overmann@iname.com> -// -// There has been also a remarkable work by Cristopher Tieckle (Crissi) -// -//============================================================================= - -#include "mp_mp3.h" -#include "KviOptions.h" - -#include <QFileInfo> -#include <QTextCodec> - -#define MAXGENRE 147 -#define GENREROWS 50 - -/* - The Information is stored in the last 128 bytes of an MP3. The Tag - has got the following fields, and the offsets given here, are from - 0-127. - - Field Length Offsets - Tag 3 0-2 - Songname 30 3-32 - Artist 30 33-62 - Album 30 63-92 - Year 4 93-96 - Comment 30 97-126 - Genre 1 127 - - - The string-fields contain ASCII-data, coded in ISO-Latin 1 codepage. - Strings which are smaller than the field length are padded with zero- - bytes. - - Tag: The tag is valid if this field contains the string "TAG". This - has to be uppercase! - - Songname: This field contains the title of the MP3 (string as - above). - - Artist: This field contains the artist of the MP3 (string as above). - - Album: this field contains the album where the MP3 comes from - (string as above). - - Year: this field contains the year when this song has originally - been released (string as above). - - Comment: this field contains a comment for the MP3 (string as - above). Revision to this field has been made in ID3v1.1. See - A.4. - - Genre: this byte contains the offset of a genre in a predefined - list the byte is treated as an unsigned byte. The offset is - starting from 0. See A.3. -*/ - - -const char *typegenre [MAXGENRE+2] = -{ - "Blues","Classic Rock","Country","Dance","Disco","Funk","Grunge", - "Hip-Hop","Jazz","Metal","New Age","Oldies","Other","Pop","R&B", - "Rap","Reggae","Rock","Techno","Industrial","Alternative","Ska", - "Death Metal","Pranks","Soundtrack","Euro-Techno","Ambient", - "Trip-Hop","Vocal","Jazz+Funk","Fusion","Trance","Classical", - "Instrumental","Acid","House","Game","Sound Clip","Gospel","Noise", - "Alt. Rock","Bass","Soul","Punk","Space","Meditative", - "Instrumental Pop","Instrumental Rock","Ethnic","Gothic", - "Darkwave","Techno-Industrial","Electronic","Pop-Folk","Eurodance", - "Dream","Southern Rock","Comedy","Cult","Gangsta Rap","Top 40", - "Christian Rap","Pop/Funk","Jungle","Native American","Cabaret", - "New Wave","Psychedelic","Rave","Showtunes","Trailer","Lo-Fi", - "Tribal","Acid Punk","Acid Jazz","Polka","Retro","Musical", - "Rock & Roll","Hard Rock","Folk","Folk/Rock","National Folk", - "Swing","Fast-Fusion","Bebob","Latin","Revival","Celtic", - "Bluegrass","Avantgarde","Gothic Rock","Progressive Rock", - "Psychedelic Rock","Symphonic Rock","Slow Rock","Big Band", - "Chorus","Easy Listening","Acoustic","Humour","Speech","Chanson", - "Opera","Chamber Music","Sonata","Symphony","Booty Bass","Primus", - "Porn Groove","Satire","Slow Jam","Club","Tango","Samba", - "Folklore","Ballad","Power Ballad","Rhythmic Soul","Freestyle", - "Duet","Punk Rock","Drum Solo","A Cappella","Euro-House", - "Dance Hall","Goa","Drum & Bass","Club-House","Hardcore","Terror", - "Indie","BritPop","Negerpunk","Polsk Punk","Beat", - "Christian Gangsta Rap","Heavy Metal","Black Metal","Crossover", - "Contemporary Christian","Christian Rock","Merengue","Salsa", - "Thrash Metal","Anime","JPop","Synthpop","" -}; - -const char * get_typegenre(int idx) -{ - if(idx > MAXGENRE)return typegenre[12]; - return typegenre[idx]; -} - -int galphagenreindex[MAXGENRE+2] = -{ - 148,123,74,73,34,99,40,20,26,145,90, - 116,41,135,85,96,138,89,0,107,132,65,88, - 104,102,97,136,61,141,1,32,128,112,57,140, - 2,139,58,125,3,50,22,4,55,127,122,120, - 98,52,48,124,25,54,84,81,115,80,119,5, - 30,36,59,126,38,91,49,6,79,129,137,7, - 35,100,131,19,46,47,33,146,29,8,63,86, - 71,45,142,9,77,82,64,133,10,66,39,11, - 103,12,75,134,53,62,13,109,117,23,108,92, - 93,67,121,43,14,15,68,16,76,87,118,78, - 17,143,114,110,69,21,111,95,105,42,37,24, - 56,44,101,83,94,106,147,113,51,18,130,144, - 60,70,31,72,27,28 -}; - -int *alphagenreindex=&(galphagenreindex[1]); - - -int layer_tab[4]= {0, 3, 2, 1}; - -int frequencies[3][4] = -{ - {22050,24000,16000,50000}, /* MPEG 2.0 */ - {44100,48000,32000,50000}, /* MPEG 1.0 */ - {11025,12000,8000,50000} /* MPEG 2.5 */ -}; - -int bitrate[2][3][14] = -{ - { /* MPEG 2.0 */ - {32,48,56,64,80,96,112,128,144,160,176,192,224,256}, /* layer 1 */ - {8,16,24,32,40,48,56,64,80,96,112,128,144,160}, /* layer 2 */ - {8,16,24,32,40,48,56,64,80,96,112,128,144,160} /* layer 3 */ - }, - { /* MPEG 1.0 */ - {32,64,96,128,160,192,224,256,288,320,352,384,416,448}, /* layer 1 */ - {32,48,56,64,80,96,112,128,160,192,224,256,320,384}, /* layer 2 */ - {32,40,48,56,64,80,96,112,128,160,192,224,256,320} /* layer 3 */ - } -}; - -int frame_size_index[] = {24000, 72000, 72000}; - -const char *mode_text[] = -{ - "Stereo", "Joint Stereo", "Dual Channel", "Mono" -}; - -const char *emphasis_text[] = -{ - "None", "50/15 Microseconds", "Reserved", "CCITT J 17" -}; - -void resetmp3infoStruct(mp3info *i) -{ - i->file=0; - i->datasize=0; - i->header_isvalid=0; - memset(&i->header,0,sizeof(i->header)); - i->id3_isvalid=0; - memset(&i->id3,0,sizeof(i->id3)); - i->vbr=0; - i->vbr_average=0; - i->seconds=0; - i->frames=0; - i->badframes=0; -} - -int get_mp3_info(mp3info *mp3) -{ -// mp3header header; - - QFile fi(mp3->filename); - mp3->datasize=fi.size();//filestat.st_size; - - get_id3(mp3); - - if(get_first_header(mp3,0L)) - { - int bitrate,counter=0; - int data_start=ftell(mp3->file); - int lastrate=15-mp3->header.bitrate; - while((counter < NUM_SAMPLES) && lastrate) - { - int sample_pos=(counter*(mp3->datasize/NUM_SAMPLES+1))+data_start; - if(get_first_header(mp3,sample_pos)) - { - bitrate=15-mp3->header.bitrate; - } else { - bitrate=-1; - } - - if(bitrate != lastrate) - { - mp3->vbr=1; - } - lastrate=bitrate; - counter++; - - } - mp3->frames=(mp3->datasize-data_start)/(frame_length(&mp3->header)); - mp3->seconds = (int)((float)(frame_length(&mp3->header)*mp3->frames)/ - (float)(header_bitrate(&mp3->header)*125)+0.5); - mp3->vbr_average = (float)header_bitrate(&mp3->header); - } - - return 0; -} - -int get_first_header(mp3info *mp3, long startpos) -{ - int k, l=0,c; - mp3header h, h2; - long valid_start=0; - - fseek(mp3->file,startpos,SEEK_SET); - while(1) - { - while((c=fgetc(mp3->file)) != 255 && (c != EOF)) {} - if(c == 255) - { - ungetc(c,mp3->file); - valid_start=ftell(mp3->file); - if((l=get_header(mp3->file,&h))) - { - fseek(mp3->file,l-FRAME_HEADER_SIZE,SEEK_CUR); - for(k=1; (k < MIN_CONSEC_GOOD_FRAMES) && (mp3->datasize-ftell(mp3->file) >= FRAME_HEADER_SIZE); k++) - { - if(!(l=get_header(mp3->file,&h2))) break; - if(!sameConstant(&h,&h2)) break; - fseek(mp3->file,l-FRAME_HEADER_SIZE,SEEK_CUR); - } - if(k == MIN_CONSEC_GOOD_FRAMES) - { - fseek(mp3->file,valid_start,SEEK_SET); - memcpy(&(mp3->header), &h2, sizeof(mp3header)); - mp3->header_isvalid = 1; - return 1; - } - } - } else { - return 0; - } - } - return 0; -} - - -// Get next MP3 frame header. -// Return codes: -// positive value = Frame Length of this header -// 0 = No, we did not retrieve a valid frame header - -int get_header(FILE *file,mp3header *header) -{ - unsigned char buffer[FRAME_HEADER_SIZE]; - int fl; - - if(fread(&buffer,FRAME_HEADER_SIZE,1,file)<1) - { - header->sync=0; - return 0; - } - header->sync=(((int)buffer[0]<<4) | ((int)(buffer[1]&0xE0)>>4)); - if(buffer[1] & 0x10) header->version=(buffer[1] >> 3) & 1; - else header->version=2; - header->layer=(buffer[1] >> 1) & 3; - if((header->sync != 0xFFE) || (header->layer != 1)) - { - header->sync=0; - return 0; - } - header->crc=buffer[1] & 1; - header->bitrate=(buffer[2] >> 4) & 0x0F; - header->freq=(buffer[2] >> 2) & 0x3; - header->padding=(buffer[2] >>1) & 0x1; - header->extension=(buffer[2]) & 0x1; - header->mode=(buffer[3] >> 6) & 0x3; - header->mode_extension=(buffer[3] >> 4) & 0x3; - header->copyright=(buffer[3] >> 3) & 0x1; - header->original=(buffer[3] >> 2) & 0x1; - header->emphasis=(buffer[3]) & 0x3; - - return ((fl=frame_length(header)) >= MIN_FRAME_SIZE ? fl : 0); -} - -int frame_length(mp3header *header) -{ - return header->sync == 0xFFE ? - (frame_size_index[3-header->layer]*((header->version&1)+1)* - header_bitrate(header)/header_frequency(header))+ - header->padding : 1; -} - -int header_layer(mp3header *h) -{ - return layer_tab[h->layer]; -} - -int header_bitrate(mp3header *h) -{ - if(h->bitrate > 0) - return bitrate[h->version & 1][3-h->layer][h->bitrate-1]; - else - return -1; // unknown -} - -int header_frequency(mp3header *h) -{ - return frequencies[h->version][h->freq]; -} - -const char *header_emphasis(mp3header *h) -{ - return emphasis_text[h->emphasis]; -} - -const char *header_mode(mp3header *h) -{ - return mode_text[h->mode]; -} - -int header_channels(mp3header * h) -{ - return h->mode == 3 ? 1 : 2; -} - -int header_crc(mp3header *h) -{ - return (!h->crc); -} - -int sameConstant(mp3header *h1, mp3header *h2) -{ - if((*(uint*)h1) == (*(uint*)h2)) return 1; - - if((h1->version == h2->version ) && - (h1->layer == h2->layer ) && - (h1->crc == h2->crc ) && - (h1->freq == h2->freq ) && - (h1->mode == h2->mode ) && - (h1->copyright == h2->copyright ) && - (h1->original == h2->original ) && - (h1->emphasis == h2->emphasis )) - return 1; - else return 0; -} - -int get_id3(mp3info *mp3) -{ - // this will read ID3v1 tags - int retcode=0; - char fbuf[4]; - - if(mp3->datasize >= 128) - { - if(fseek(mp3->file, -128, SEEK_END )) - { - retcode |= 4; - } else { - size_t dummy = fread(fbuf,1,3,mp3->file); fbuf[3] = '\0'; - mp3->id3.genre[0]=255; - - if(!strcmp((const char *)"TAG",(const char *)fbuf)) - { - mp3->id3_isvalid=1; - mp3->datasize -= 128; - fseek(mp3->file, -125, SEEK_END); - dummy = fread(mp3->id3.title,1,30,mp3->file); mp3->id3.title[30] = '\0'; - dummy = fread(mp3->id3.artist,1,30,mp3->file); mp3->id3.artist[30] = '\0'; - dummy = fread(mp3->id3.album,1,30,mp3->file); mp3->id3.album[30] = '\0'; - dummy = fread(mp3->id3.year,1,4,mp3->file); mp3->id3.year[4] = '\0'; - dummy = fread(mp3->id3.comment,1,30,mp3->file); mp3->id3.comment[30] = '\0'; - if(mp3->id3.comment[28] == '\0') - { - mp3->id3.track[0] = mp3->id3.comment[29]; - } - dummy = fread(mp3->id3.genre,1,1,mp3->file); - unpad(mp3->id3.title); - unpad(mp3->id3.artist); - unpad(mp3->id3.album); - unpad(mp3->id3.year); - unpad(mp3->id3.comment); - } - } - } - return retcode; -} - -char *pad(char *string, int length) -{ - int l; - - l=strlen(string); - while(l<length) - { - string[l] = ' '; - l++; - } - - string[l]='\0'; - return string; -} - -// Remove trailing whitespace from the end of a string -char *unpad(char *string) -{ - char *pos=string+strlen(string)-1; - while(isspace(pos[0])) (pos--)[0]=0; - return string; -} - -bool scan_mp3_file(QString&,mp3info * i) -{ - //memset(i,0,sizeof(mp3info)); - resetmp3infoStruct(i); - - - i->filename = "text"; - i->file = fopen(QTextCodec::codecForLocale()->fromUnicode(i->filename).data(),"rb"); - if(!i->file)return false; - - get_mp3_info(i); - - fclose(i->file); - - return (i->id3_isvalid); -} |