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mpv/stream/stream_cddb.c

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/*
* CDDB HTTP protocol
* by Bertrand Baudet <bertrand_baudet@yahoo.com>
* (C) 2002, MPlayer team.
*
* Implementation follow the freedb.howto1.06.txt specification
* from http://freedb.freedb.org
*
* discid computation by Jeremy D. Zawodny
* Copyright (c) 1998-2000 Jeremy D. Zawodny <Jeremy@Zawodny.com>
* Code release under GPL
*
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <stdarg.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>
#ifdef WIN32
#ifdef __MINGW32__
#define mkdir(a,b) mkdir(a)
#endif
#include <windows.h>
#ifdef HAVE_WINSOCK2
#include <winsock2.h>
#endif
#else
#include <netdb.h>
#include <sys/ioctl.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include "mp_msg.h"
#include "help_mp.h"
#if defined(__linux__)
#include <linux/cdrom.h>
#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
#include <sys/cdio.h>
#elif defined(WIN32)
#include <ddk/ntddcdrm.h>
#elif (__bsdi__)
#include <dvd.h>
#endif
#include "cdd.h"
#include "version.h"
#include "stream.h"
#include "network.h"
#define DEFAULT_FREEDB_SERVER "freedb.freedb.org"
#define DEFAULT_CACHE_DIR "/.cddb/"
stream_t* open_cdda(char *dev, char *track);
static cd_toc_t cdtoc[100];
static int cdtoc_last_track;
int
read_toc(const char *dev) {
int first, last;
int i;
#ifdef WIN32
HANDLE drive;
DWORD r;
CDROM_TOC toc;
char device[10];
sprintf(device, "\\\\.\\%s", dev);
drive = CreateFile(device, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
if(!DeviceIoControl(drive, IOCTL_CDROM_READ_TOC, NULL, 0, &toc, sizeof(CDROM_TOC), &r, 0)) {
mp_msg(MSGT_OPEN, MSGL_ERR, MSGTR_MPDEMUX_CDDB_FailedToReadTOC);
return 0;
}
first = toc.FirstTrack - 1; last = toc.LastTrack;
for (i = first; i <= last; i++) {
cdtoc[i].min = toc.TrackData[i].Address[1];
cdtoc[i].sec = toc.TrackData[i].Address[2];
cdtoc[i].frame = toc.TrackData[i].Address[3];
}
CloseHandle(drive);
#else
int drive;
drive = open(dev, O_RDONLY | O_NONBLOCK);
if( drive<0 ) {
return drive;
}
#if defined(__linux__) || defined(__bsdi__)
{
struct cdrom_tochdr tochdr;
ioctl(drive, CDROMREADTOCHDR, &tochdr);
first = tochdr.cdth_trk0 - 1; last = tochdr.cdth_trk1;
}
for (i = first; i <= last; i++) {
struct cdrom_tocentry tocentry;
tocentry.cdte_track = (i == last) ? 0xAA : i + 1;
tocentry.cdte_format = CDROM_MSF;
ioctl(drive, CDROMREADTOCENTRY, &tocentry);
cdtoc[i].min = tocentry.cdte_addr.msf.minute;
cdtoc[i].sec = tocentry.cdte_addr.msf.second;
cdtoc[i].frame = tocentry.cdte_addr.msf.frame;
}
#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
{
struct ioc_toc_header tochdr;
ioctl(drive, CDIOREADTOCHEADER, &tochdr);
first = tochdr.starting_track - 1; last = tochdr.ending_track;
}
for (i = first; i <= last; i++) {
struct ioc_read_toc_single_entry tocentry;
tocentry.track = (i == last) ? 0xAA : i + 1;
tocentry.address_format = CD_MSF_FORMAT;
ioctl(drive, CDIOREADTOCENTRY, &tocentry);
cdtoc[i].min = tocentry.entry.addr.msf.minute;
cdtoc[i].sec = tocentry.entry.addr.msf.second;
cdtoc[i].frame = tocentry.entry.addr.msf.frame;
}
#elif defined(__NetBSD__) || defined(__OpenBSD__)
{
struct ioc_toc_header tochdr;
ioctl(drive, CDIOREADTOCHEADER, &tochdr);
first = tochdr.starting_track - 1; last = tochdr.ending_track;
}
for (i = first; i <= last; i++) {
struct ioc_read_toc_entry tocentry;
struct cd_toc_entry toc_buffer;
tocentry.starting_track = (i == last) ? 0xAA : i + 1;
tocentry.address_format = CD_MSF_FORMAT;
tocentry.data = &toc_buffer;
tocentry.data_len = sizeof(toc_buffer);
ioctl(drive, CDIOREADTOCENTRYS, &tocentry);
cdtoc[i].min = toc_buffer.addr.msf.minute;
cdtoc[i].sec = toc_buffer.addr.msf.second;
cdtoc[i].frame = toc_buffer.addr.msf.frame;
}
#endif
close(drive);
#endif
for (i = first; i <= last; i++)
cdtoc[i].frame += (cdtoc[i].min * 60 + cdtoc[i].sec) * 75;
return last;
}
/**
\brief Reads TOC from CD in the given device and prints the number of tracks
and the length of each track in minute:second:frame format.
\param *dev the device to analyse
\return if the command line -identify is given, returns the last track of
the TOC or -1 if the TOC can't be read,
otherwise just returns 0 and let cddb_resolve the TOC
*/
int cdd_identify(const char *dev)
{
cdtoc_last_track = 0;
if (mp_msg_test(MSGT_IDENTIFY, MSGL_INFO))
{
int i, min, sec, frame;
cdtoc_last_track = read_toc(dev);
if (cdtoc_last_track < 0) {
mp_msg(MSGT_OPEN, MSGL_ERR, MSGTR_MPDEMUX_CDDB_FailedToOpenDevice, dev);
return -1;
}
mp_msg(MSGT_GLOBAL, MSGL_INFO, "ID_CDDA_TRACKS=%d\n", cdtoc_last_track);
for (i = 1; i <= cdtoc_last_track; i++)
{
frame = cdtoc[i].frame - cdtoc[i-1].frame;
sec = frame / 75;
frame -= sec * 75;
min = sec / 60;
sec -= min * 60;
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_CDDA_TRACK_%d_MSF=%02d:%02d:%02d\n", i, min, sec, frame);
}
}
return cdtoc_last_track;
}
unsigned int
cddb_sum(int n) {
unsigned int ret;
ret = 0;
while (n > 0) {
ret += (n % 10);
n /= 10;
}
return ret;
}
unsigned long
cddb_discid(int tot_trks) {
unsigned int i, t = 0, n = 0;
i = 0;
while (i < (unsigned int)tot_trks) {
n = n + cddb_sum((cdtoc[i].min * 60) + cdtoc[i].sec);
i++;
}
t = ((cdtoc[tot_trks].min * 60) + cdtoc[tot_trks].sec) -
((cdtoc[0].min * 60) + cdtoc[0].sec);
return ((n % 0xff) << 24 | t << 8 | tot_trks);
}
int
cddb_http_request(char *command, int (*reply_parser)(HTTP_header_t*,cddb_data_t*), cddb_data_t *cddb_data) {
char request[4096];
int fd, ret = 0;
URL_t *url;
HTTP_header_t *http_hdr;
if( reply_parser==NULL || command==NULL || cddb_data==NULL ) return -1;
sprintf( request, "http://%s/~cddb/cddb.cgi?cmd=%s%s&proto=%d", cddb_data->freedb_server, command, cddb_data->cddb_hello, cddb_data->freedb_proto_level );
mp_msg(MSGT_OPEN, MSGL_INFO,"Request[%s]\n", request );
url = url_new(request);
if( url==NULL ) {
mp_msg(MSGT_DEMUX, MSGL_ERR, MSGTR_MPDEMUX_CDDB_NotAValidURL);
return -1;
}
fd = http_send_request(url,0);
if( fd<0 ) {
mp_msg(MSGT_DEMUX, MSGL_ERR, MSGTR_MPDEMUX_CDDB_FailedToSendHTTPRequest);
return -1;
}
http_hdr = http_read_response( fd );
if( http_hdr==NULL ) {
mp_msg(MSGT_DEMUX, MSGL_ERR, MSGTR_MPDEMUX_CDDB_FailedToReadHTTPResponse);
return -1;
}
http_debug_hdr(http_hdr);
mp_msg(MSGT_OPEN, MSGL_INFO,"body=[%s]\n", http_hdr->body );
switch(http_hdr->status_code) {
case 200:
ret = reply_parser(http_hdr, cddb_data);
break;
case 400:
mp_msg(MSGT_DEMUX, MSGL_ERR, MSGTR_MPDEMUX_CDDB_HTTPErrorNOTFOUND);
break;
default:
mp_msg(MSGT_DEMUX, MSGL_ERR, MSGTR_MPDEMUX_CDDB_HTTPErrorUnknown);
}
http_free( http_hdr );
url_free( url );
return ret;
}
int
cddb_read_cache(cddb_data_t *cddb_data) {
char file_name[100];
struct stat stats;
int file_fd, ret;
size_t file_size;
if( cddb_data==NULL || cddb_data->cache_dir==NULL ) return -1;
sprintf( file_name, "%s%08lx", cddb_data->cache_dir, cddb_data->disc_id);
file_fd = open(file_name, O_RDONLY
#ifdef WIN32
| O_BINARY
#endif
);
if( file_fd<0 ) {
mp_msg(MSGT_DEMUX, MSGL_ERR, MSGTR_MPDEMUX_CDDB_NoCacheFound);
return -1;
}
ret = fstat( file_fd, &stats );
if( ret<0 ) {
perror("fstat");
file_size = 4096;
} else {
file_size = stats.st_size;
}
cddb_data->xmcd_file = malloc(file_size);
if( cddb_data->xmcd_file==NULL ) {
mp_msg(MSGT_DEMUX, MSGL_ERR, MSGTR_MemAllocFailed);
close(file_fd);
return -1;
}
cddb_data->xmcd_file_size = read(file_fd, cddb_data->xmcd_file, file_size);
if( cddb_data->xmcd_file_size!=file_size ) {
mp_msg(MSGT_DEMUX, MSGL_WARN, MSGTR_MPDEMUX_CDDB_NotAllXMCDFileHasBeenRead);
close(file_fd);
return -1;
}
close(file_fd);
return 0;
}
int
cddb_write_cache(cddb_data_t *cddb_data) {
// We have the file, save it for cache.
struct stat file_stat;
char file_name[100];
int file_fd, ret;
int wrote=0;
if( cddb_data==NULL || cddb_data->cache_dir==NULL ) return -1;
// Check if the CDDB cache dir exist
ret = stat( cddb_data->cache_dir, &file_stat );
if( ret<0 ) {
// Directory not present, create it.
ret = mkdir( cddb_data->cache_dir, 0755 );
#ifdef __MINGW32__
if( ret<0 && errno != EEXIST ) {
#else
if( ret<0 ) {
#endif
perror("mkdir");
mp_msg(MSGT_DEMUX, MSGL_ERR, MSGTR_MPDEMUX_CDDB_FailedToCreateDirectory, cddb_data->cache_dir);
return -1;
}
}
sprintf( file_name, "%s%08lx", cddb_data->cache_dir, cddb_data->disc_id );
file_fd = creat(file_name, S_IREAD|S_IWRITE);
if( file_fd<0 ) {
perror("create");
return -1;
}
wrote = write(file_fd, cddb_data->xmcd_file, cddb_data->xmcd_file_size);
if( wrote<0 ) {
perror("write");
close(file_fd);
return -1;
}
if( (unsigned int)wrote!=cddb_data->xmcd_file_size ) {
mp_msg(MSGT_DEMUX, MSGL_WARN, MSGTR_MPDEMUX_CDDB_NotAllXMCDFileHasBeenWritten);
close(file_fd);
return -1;
}
close(file_fd);
return 0;
}
int
cddb_read_parse(HTTP_header_t *http_hdr, cddb_data_t *cddb_data) {
unsigned long disc_id;
char category[100];
char *ptr=NULL, *ptr2=NULL;
int ret, status;
if( http_hdr==NULL || cddb_data==NULL ) return -1;
ret = sscanf( http_hdr->body, "%d ", &status);
if( ret!=1 ) {
mp_msg(MSGT_DEMUX, MSGL_ERR, MSGTR_ParseError);
return -1;
}
switch(status) {
case 210:
ret = sscanf( http_hdr->body, "%d %s %08lx", &status, category, &disc_id);
if( ret!=3 ) {
mp_msg(MSGT_DEMUX, MSGL_ERR, MSGTR_ParseError);
return -1;
}
// Check if it's a xmcd database file
ptr = strstr(http_hdr->body, "# xmcd");
if( ptr==NULL ) {
mp_msg(MSGT_DEMUX, MSGL_ERR, MSGTR_MPDEMUX_CDDB_InvalidXMCDDatabaseReturned);
return -1;
}
// Ok found the beginning of the file
// look for the end
ptr2 = strstr(ptr, "\r\n.\r\n");
if( ptr2==NULL ) {
ptr2 = strstr(ptr, "\n.\n");
if( ptr2==NULL ) {
mp_msg(MSGT_DEMUX, MSGL_FIXME, "Unable to find '.'\n");
ptr2=ptr+strlen(ptr); //return -1;
}
}
// Ok found the end
// do a sanity check
if( http_hdr->body_size<(unsigned int)(ptr2-ptr) ) {
mp_msg(MSGT_DEMUX, MSGL_ERR, MSGTR_MPDEMUX_CDDB_UnexpectedFIXME);
return -1;
}
cddb_data->xmcd_file = ptr;
cddb_data->xmcd_file_size = ptr2-ptr+2;
cddb_data->xmcd_file[cddb_data->xmcd_file_size] = '\0';
// Avoid the http_free function to free the xmcd file...save a mempcy...
http_hdr->body = NULL;
http_hdr->body_size = 0;
return cddb_write_cache(cddb_data);
default:
mp_msg(MSGT_DEMUX, MSGL_FIXME, MSGTR_MPDEMUX_CDDB_UnhandledCode);
}
return 0;
}
int
cddb_request_titles(cddb_data_t *cddb_data) {
char command[1024];
sprintf( command, "cddb+read+%s+%08lx", cddb_data->category, cddb_data->disc_id);
return cddb_http_request(command, cddb_read_parse, cddb_data);
}
int
cddb_parse_matches_list(HTTP_header_t *http_hdr, cddb_data_t *cddb_data) {
char album_title[100];
char *ptr = NULL;
int ret;
ptr = strstr(http_hdr->body, "\n");
if( ptr==NULL ) {
mp_msg(MSGT_DEMUX, MSGL_ERR, MSGTR_MPDEMUX_CDDB_UnableToFindEOL);
return -1;
}
ptr++;
// We have a list of exact/inexact matches, so which one do we use?
// So let's take the first one.
ret = sscanf(ptr, "%s %08lx %s", cddb_data->category, &(cddb_data->disc_id), album_title);
if( ret!=3 ) {
mp_msg(MSGT_DEMUX, MSGL_ERR, MSGTR_ParseError);
return -1;
}
ptr = strstr(http_hdr->body, album_title);
if( ptr!=NULL ) {
char *ptr2;
int len;
ptr2 = strstr(ptr, "\n");
if( ptr2==NULL ) {
len = (http_hdr->body_size)-(ptr-(http_hdr->body));
} else {
len = ptr2-ptr+1;
}
strncpy(album_title, ptr, len);
album_title[len-2]='\0';
}
mp_msg(MSGT_DEMUX, MSGL_STATUS, MSGTR_MPDEMUX_CDDB_ParseOKFoundAlbumTitle, album_title);
return 0;
}
int
cddb_query_parse(HTTP_header_t *http_hdr, cddb_data_t *cddb_data) {
char album_title[100];
char *ptr = NULL;
int ret, status;
ret = sscanf( http_hdr->body, "%d ", &status);
if( ret!=1 ) {
mp_msg(MSGT_DEMUX, MSGL_ERR, MSGTR_ParseError);
return -1;
}
switch(status) {
case 200:
// Found exact match
ret = sscanf(http_hdr->body, "%d %s %08lx %s", &status, cddb_data->category, &(cddb_data->disc_id), album_title);
if( ret!=4 ) {
mp_msg(MSGT_DEMUX, MSGL_ERR, MSGTR_ParseError);
return -1;
}
ptr = strstr(http_hdr->body, album_title);
if( ptr!=NULL ) {
char *ptr2;
int len;
ptr2 = strstr(ptr, "\n");
if( ptr2==NULL ) {
len = (http_hdr->body_size)-(ptr-(http_hdr->body));
} else {
len = ptr2-ptr+1;
}
strncpy(album_title, ptr, len);
album_title[len-2]='\0';
}
mp_msg(MSGT_DEMUX, MSGL_STATUS, MSGTR_MPDEMUX_CDDB_ParseOKFoundAlbumTitle, album_title);
return cddb_request_titles(cddb_data);
case 202:
// No match found
mp_msg(MSGT_DEMUX, MSGL_WARN, MSGTR_MPDEMUX_CDDB_AlbumNotFound);
break;
case 210:
// Found exact matches, list follows
cddb_parse_matches_list(http_hdr, cddb_data);
return cddb_request_titles(cddb_data);
/*
body=[210 Found exact matches, list follows (until terminating `.')
misc c711930d Santana / Supernatural
rock c711930d Santana / Supernatural
blues c711930d Santana / Supernatural
.]
*/
case 211:
// Found inexact matches, list follows
cddb_parse_matches_list(http_hdr, cddb_data);
return cddb_request_titles(cddb_data);
case 500:
mp_msg(MSGT_DEMUX, MSGL_FIXME, MSGTR_MPDEMUX_CDDB_ServerReturnsCommandSyntaxErr);
break;
default:
mp_msg(MSGT_DEMUX, MSGL_FIXME, MSGTR_MPDEMUX_CDDB_UnhandledCode);
}
return -1;
}
int
cddb_proto_level_parse(HTTP_header_t *http_hdr, cddb_data_t *cddb_data) {
int max;
int ret, status;
char *ptr;
ret = sscanf( http_hdr->body, "%d ", &status);
if( ret!=1 ) {
mp_msg(MSGT_DEMUX, MSGL_ERR, MSGTR_ParseError);
return -1;
}
switch(status) {
case 210:
ptr = strstr(http_hdr->body, "max proto:");
if( ptr==NULL ) {
mp_msg(MSGT_DEMUX, MSGL_ERR, MSGTR_ParseError);
return -1;
}
ret = sscanf(ptr, "max proto: %d", &max);
if( ret!=1 ) {
mp_msg(MSGT_DEMUX, MSGL_ERR, MSGTR_ParseError);
return -1;
}
cddb_data->freedb_proto_level = max;
return 0;
default:
mp_msg(MSGT_DEMUX, MSGL_FIXME, MSGTR_MPDEMUX_CDDB_UnhandledCode);
}
return -1;
}
int
cddb_get_proto_level(cddb_data_t *cddb_data) {
return cddb_http_request("stat", cddb_proto_level_parse, cddb_data);
}
int
cddb_freedb_sites_parse(HTTP_header_t *http_hdr, cddb_data_t *cddb_data) {
int ret, status;
ret = sscanf( http_hdr->body, "%d ", &status);
if( ret!=1 ) {
mp_msg(MSGT_DEMUX, MSGL_ERR, MSGTR_ParseError);
return -1;
}
switch(status) {
case 210:
// TODO: Parse the sites
ret = cddb_data->anonymous; // For gcc complaining about unused parameter.
return 0;
case 401:
mp_msg(MSGT_DEMUX, MSGL_FIXME, MSGTR_MPDEMUX_CDDB_NoSitesInfoAvailable);
break;
default:
mp_msg(MSGT_DEMUX, MSGL_FIXME, MSGTR_MPDEMUX_CDDB_UnhandledCode);
}
return -1;
}
int
cddb_get_freedb_sites(cddb_data_t *cddb_data) {
return cddb_http_request("sites", cddb_freedb_sites_parse, cddb_data);
}
void
cddb_create_hello(cddb_data_t *cddb_data) {
char host_name[51];
char *user_name;
if( cddb_data->anonymous ) { // Default is anonymous
/* Note from Eduardo P<>rez Ureta <eperez@it.uc3m.es> :
* We don't send current user/host name in hello to prevent spam.
* Software that sends this is considered spyware
* that most people don't like.
*/
user_name = "anonymous";
strcpy(host_name, "localhost");
} else {
if( gethostname(host_name, 50)<0 ) {
strcpy(host_name, "localhost");
}
user_name = getenv("LOGNAME");
}
sprintf( cddb_data->cddb_hello, "&hello=%s+%s+%s+%s", user_name, host_name, "MPlayer", VERSION );
}
int
cddb_retrieve(cddb_data_t *cddb_data) {
char offsets[1024], command[1024];
char *ptr;
unsigned int i, time_len;
int ret;
ptr = offsets;
for( i=0; i<cddb_data->tracks ; i++ ) {
ptr += sprintf(ptr, "%d+", cdtoc[i].frame );
if (ptr-offsets > sizeof offsets - 40) break;
}
ptr[0]=0;
time_len = (cdtoc[cddb_data->tracks].frame)/75;
cddb_data->freedb_server = DEFAULT_FREEDB_SERVER;
cddb_data->freedb_proto_level = 1;
cddb_data->xmcd_file = NULL;
cddb_create_hello(cddb_data);
if( cddb_get_proto_level(cddb_data)<0 ) {
mp_msg(MSGT_DEMUX, MSGL_ERR, MSGTR_MPDEMUX_CDDB_FailedToGetProtocolLevel);
return -1;
}
//cddb_get_freedb_sites(&cddb_data);
sprintf(command, "cddb+query+%08lx+%d+%s%d", cddb_data->disc_id, cddb_data->tracks, offsets, time_len );
ret = cddb_http_request(command, cddb_query_parse, cddb_data);
if( ret<0 ) return -1;
if( cddb_data->cache_dir!=NULL ) {
free(cddb_data->cache_dir);
}
return 0;
}
int
cddb_resolve(const char *dev, char **xmcd_file) {
char cddb_cache_dir[] = DEFAULT_CACHE_DIR;
char *home_dir = NULL;
cddb_data_t cddb_data;
if (cdtoc_last_track <= 0)
{
cdtoc_last_track = read_toc(dev);
if (cdtoc_last_track < 0) {
mp_msg(MSGT_OPEN, MSGL_ERR, MSGTR_MPDEMUX_CDDB_FailedToOpenDevice, dev);
return -1;
}
}
cddb_data.tracks = cdtoc_last_track;
cddb_data.disc_id = cddb_discid(cddb_data.tracks);
cddb_data.anonymous = 1; // Don't send user info by default
// Check if there is a CD in the drive
// FIXME: That's not really a good way to check
if( cddb_data.disc_id==0 ) {
mp_msg(MSGT_DEMUX, MSGL_ERR, MSGTR_MPDEMUX_CDDB_NoCDInDrive);
return -1;
}
home_dir = getenv("HOME");
#ifdef __MINGW32__
if( home_dir==NULL ) home_dir = getenv("USERPROFILE");
if( home_dir==NULL ) home_dir = getenv("HOMEPATH");
// Last resort, store the cddb cache in the mplayer directory
if( home_dir==NULL ) home_dir = (char *)get_path("");
#endif
if( home_dir==NULL ) {
cddb_data.cache_dir = NULL;
} else {
cddb_data.cache_dir = malloc(strlen(home_dir)+strlen(cddb_cache_dir)+1);
if( cddb_data.cache_dir==NULL ) {
mp_msg(MSGT_DEMUX, MSGL_ERR, MSGTR_MemAllocFailed);
return -1;
}
sprintf(cddb_data.cache_dir, "%s%s", home_dir, cddb_cache_dir );
}
// Check for a cached file
if( cddb_read_cache(&cddb_data)<0 ) {
// No Cache found
if( cddb_retrieve(&cddb_data)<0 ) {
return -1;
}
}
if( cddb_data.xmcd_file!=NULL ) {
// printf("%s\n", cddb_data.xmcd_file );
*xmcd_file = cddb_data.xmcd_file;
return 0;
}
return -1;
}
/*******************************************************************************************************************
*
* xmcd parser
*
*******************************************************************************************************************/
char*
xmcd_parse_dtitle(cd_info_t *cd_info, char *line) {
char *ptr, *album;
ptr = strstr(line, "DTITLE=");
if( ptr!=NULL ) {
ptr += 7;
album = strstr(ptr, "/");
if( album==NULL ) return NULL;
cd_info->album = malloc(strlen(album+2)+1);
if( cd_info->album==NULL ) {
return NULL;
}
strcpy( cd_info->album, album+2 );
album--;
album[0] = '\0';
cd_info->artist = malloc(strlen(ptr)+1);
if( cd_info->artist==NULL ) {
return NULL;
}
strcpy( cd_info->artist, ptr );
}
return ptr;
}
char*
xmcd_parse_dgenre(cd_info_t *cd_info, char *line) {
char *ptr;
ptr = strstr(line, "DGENRE=");
if( ptr!=NULL ) {
ptr += 7;
cd_info->genre = malloc(strlen(ptr)+1);
if( cd_info->genre==NULL ) {
return NULL;
}
strcpy( cd_info->genre, ptr );
}
return ptr;
}
char*
xmcd_parse_ttitle(cd_info_t *cd_info, char *line) {
unsigned int track_nb;
unsigned long sec, off;
char *ptr;
ptr = strstr(line, "TTITLE");
if( ptr!=NULL ) {
ptr += 6;
// Here we point to the track number
track_nb = atoi(ptr);
ptr = strstr(ptr, "=");
if( ptr==NULL ) return NULL;
ptr++;
sec = cdtoc[track_nb].frame;
off = cdtoc[track_nb+1].frame-sec+1;
cd_info_add_track( cd_info, ptr, track_nb+1, (unsigned int)(off/(60*75)), (unsigned int)((off/75)%60), (unsigned int)(off%75), sec, off );
}
return ptr;
}
cd_info_t*
cddb_parse_xmcd(char *xmcd_file) {
cd_info_t *cd_info = NULL;
int length, pos = 0;
char *ptr, *ptr2;
unsigned int audiolen;
if( xmcd_file==NULL ) return NULL;
cd_info = cd_info_new();
if( cd_info==NULL ) {
return NULL;
}
length = strlen(xmcd_file);
ptr = xmcd_file;
while( ptr!=NULL && pos<length ) {
// Read a line
ptr2 = ptr;
while( ptr2[0]!='\0' && ptr2[0]!='\r' && ptr2[0]!='\n' ) ptr2++;
if( ptr2[0]=='\0' ) {
break;
}
ptr2[0] = '\0';
// Ignore comments
if( ptr[0]!='#' ) {
// Search for the album title
if( xmcd_parse_dtitle(cd_info, ptr) );
// Search for the genre
else if( xmcd_parse_dgenre(cd_info, ptr) );
// Search for a track title
else if( xmcd_parse_ttitle(cd_info, ptr) ) audiolen++; // <-- audiolen++ to shut up gcc warning
}
if( ptr2[1]=='\n' ) ptr2++;
pos = (ptr2+1)-ptr;
ptr = ptr2+1;
}
audiolen = cdtoc[cd_info->nb_tracks].frame-cdtoc[0].frame;
cd_info->min = (unsigned int)(audiolen/(60*75));
cd_info->sec = (unsigned int)((audiolen/75)%60);
cd_info->msec = (unsigned int)(audiolen%75);
return cd_info;
}
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