Added KDE3 version of kvirc

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/kvirc@1095341 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 468 insertions, 0 deletions

diff --git a/src/modules/mediaplayer/mp_mp3.cpp b/src/modules/mediaplayer/mp_mp3.cpp
new file mode 100644
index 00000000..6e27fa5f
--- /dev/null
+++ b/src/modules/mediaplayer/mp_mp3.cpp
@@ -0,0 +1,468 @@
+//=============================================================================
+//
+//   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 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., 675 Mass Ave, Cambridge, MA 02139, 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 "kvi_options.h"
+
+#include <qfileinfo.h>
+#include <qtextcodec.h>
+
+#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)
+{
+	int frame_type[15]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
+	float seconds=0,total_rate=0;
+	int frames=0,frame_types=0,frames_so_far=0;
+	int l,vbr_median=-1;
+	int bitrate,lastrate;
+	int counter=0;
+//	mp3header header;
+
+	int sample_pos,data_start=0;
+
+	QFile fi(mp3->filename);
+	mp3->datasize=fi.size();//filestat.st_size;
+  
+	get_id3(mp3);
+
+	if(get_first_header(mp3,0L))
+	{
+		data_start=ftell(mp3->file);
+		lastrate=15-mp3->header.bitrate;
+		while((counter < NUM_SAMPLES) && lastrate)
+		{
+			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)/(l=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 {
+			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);
+				fread(mp3->id3.title,1,30,mp3->file); mp3->id3.title[30] = '\0';
+				fread(mp3->id3.artist,1,30,mp3->file); mp3->id3.artist[30] = '\0';
+				fread(mp3->id3.album,1,30,mp3->file); mp3->id3.album[30] = '\0';
+				fread(mp3->id3.year,1,4,mp3->file); mp3->id3.year[4] = '\0';
+				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];
+				}
+				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& szFileName,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);
+}
+