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authorGravatar Szymon Tomasz Stefanek2011-01-01 20:19:56 +0000
committerGravatar Szymon Tomasz Stefanek2011-01-01 20:19:56 +0000
commitc601b5a27f74b16158adafe429faefbe573e64a2 (patch)
treea3cde3206a45628f8ac86e8dfbdab70b20c3a831 /src/modules/mediaplayer/mp_mp3.cpp
parentprobable compilation fix for rijndaled/crypto++ (diff)
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The big rename for modules. Still some details remaining.
git-svn-id: https://svn.kvirc.de/svn/trunk/kvirc@5284 17fca916-40b9-46aa-a4ea-0a15b648b75c
Diffstat (limited to 'src/modules/mediaplayer/mp_mp3.cpp')
-rw-r--r--src/modules/mediaplayer/mp_mp3.cpp458
1 files changed, 0 insertions, 458 deletions
diff --git a/src/modules/mediaplayer/mp_mp3.cpp b/src/modules/mediaplayer/mp_mp3.cpp
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--- a/src/modules/mediaplayer/mp_mp3.cpp
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-//=============================================================================
-//
-// 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);
-}