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mpv/stream/stream_cddb.c
Uoti Urpala e2fc1f640f build: remove OS/2 support
2012-04-06 17:45:56 +03:00

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/*
* CDDB HTTP protocol
*
* Copyright (C) 2002 Bertrand Baudet <bertrand_baudet@yahoo.com>
*
* 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>
*
* This file is part of MPlayer.
*
* MPlayer 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.
*
* MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <stdarg.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>
#include <limits.h>
#include "osdep/io.h"
#if defined(__MINGW32__) || defined(__CYGWIN__)
#include <windows.h>
#if HAVE_WINSOCK2_H
#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 "path.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(__MINGW32__) || defined(__CYGWIN__)
#include <ddk/ntddcdrm.h>
#elif defined(__bsdi__)
#include <dvd.h>
#elif defined(__APPLE__) || defined(__DARWIN__)
#include <IOKit/storage/IOCDTypes.h>
#include <IOKit/storage/IOCDMediaBSDClient.h>
#include "mpbswap.h"
#endif
#include "cdd.h"
#include "mpcommon.h"
#include "stream.h"
#include "network.h"
#include "libavutil/common.h"
#define DEFAULT_FREEDB_SERVER "freedb.freedb.org"
#define DEFAULT_CACHE_DIR "/.cddb/"
typedef struct {
char cddb_hello[1024];
unsigned long disc_id;
unsigned int tracks;
char *cache_dir;
char *freedb_server;
int freedb_proto_level;
int anonymous;
char category[100];
char *xmcd_file;
size_t xmcd_file_size;
void *user_data;
} cddb_data_t;
typedef struct {
unsigned int min, sec, frame;
} cd_toc_t;
static cd_toc_t cdtoc[100];
static int cdtoc_last_track;
static int read_toc(const char *dev)
{
int first = 0, last = -1;
int i;
#if defined(__MINGW32__) || defined(__CYGWIN__)
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_tmsg(MSGT_OPEN, MSGL_ERR, "Failed to read TOC.\n");
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;
}
#elif defined(__APPLE__) || defined(__DARWIN__)
{
dk_cd_read_toc_t tochdr;
uint8_t buf[4];
uint8_t buf2[100 * sizeof(CDTOCDescriptor) + sizeof(CDTOC)];
memset(&tochdr, 0, sizeof(tochdr));
tochdr.bufferLength = sizeof(buf);
tochdr.buffer = &buf;
if (!ioctl(drive, DKIOCCDREADTOC, &tochdr)
&& tochdr.bufferLength == sizeof(buf)) {
first = buf[2] - 1;
last = buf[3];
}
if (last >= 0) {
memset(&tochdr, 0, sizeof(tochdr));
tochdr.bufferLength = sizeof(buf2);
tochdr.buffer = &buf2;
tochdr.format = kCDTOCFormatTOC;
if (ioctl(drive, DKIOCCDREADTOC, &tochdr)
|| tochdr.bufferLength < sizeof(CDTOC))
last = -1;
}
if (last >= 0) {
CDTOC *cdToc = (CDTOC *)buf2;
CDTrackInfo lastTrack;
dk_cd_read_track_info_t trackInfoParams;
for (i = first; i < last; ++i) {
CDMSF msf = CDConvertTrackNumberToMSF(i + 1, cdToc);
cdtoc[i].min = msf.minute;
cdtoc[i].sec = msf.second;
cdtoc[i].frame = msf.frame;
}
memset(&trackInfoParams, 0, sizeof(trackInfoParams));
trackInfoParams.addressType = kCDTrackInfoAddressTypeTrackNumber;
trackInfoParams.bufferLength = sizeof(lastTrack);
trackInfoParams.address = last;
trackInfoParams.buffer = &lastTrack;
if (!ioctl(drive, DKIOCCDREADTRACKINFO, &trackInfoParams)) {
CDMSF msf = CDConvertLBAToMSF(be2me_32(lastTrack.trackStartAddress)
+ be2me_32(lastTrack.trackSize));
cdtoc[last].min = msf.minute;
cdtoc[last].sec = msf.second;
cdtoc[last].frame = 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_tmsg(MSGT_OPEN, MSGL_ERR, "Failed to open %s device.\n", 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;
}
static unsigned int cddb_sum(int n)
{
unsigned int ret;
ret = 0;
while (n > 0) {
ret += (n % 10);
n /= 10;
}
return ret;
}
static 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;
}
static 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_tmsg(MSGT_DEMUX, MSGL_ERR, "not a valid URL\n");
return -1;
}
fd = http_send_request(url,0);
if (fd < 0) {
mp_tmsg(MSGT_DEMUX, MSGL_ERR, "Failed to send the HTTP request.\n");
return -1;
}
http_hdr = http_read_response(fd);
if (http_hdr == NULL) {
mp_tmsg(MSGT_DEMUX, MSGL_ERR, "Failed to read the HTTP response.\n");
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_tmsg(MSGT_DEMUX, MSGL_ERR, "Not Found.\n");
break;
default:
mp_tmsg(MSGT_DEMUX, MSGL_ERR, "unknown error code\n");
}
http_free(http_hdr);
url_free(url);
return ret;
}
static 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 | O_BINARY);
if (file_fd < 0) {
mp_tmsg(MSGT_DEMUX, MSGL_ERR, "No cache found.\n");
return -1;
}
ret = fstat(file_fd, &stats);
if (ret < 0) {
perror("fstat");
file_size = 4096;
} else {
file_size = stats.st_size < UINT_MAX ? stats.st_size : UINT_MAX - 1;
}
cddb_data->xmcd_file = malloc(file_size + 1);
if (cddb_data->xmcd_file == NULL) {
mp_tmsg(MSGT_DEMUX, MSGL_ERR, "Memory allocation failed.\n");
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_tmsg(MSGT_DEMUX, MSGL_WARN, "Not all the xmcd file has been read.\n");
close(file_fd);
return -1;
}
cddb_data->xmcd_file[cddb_data->xmcd_file_size] = 0;
close(file_fd);
return 0;
}
static int cddb_write_cache(cddb_data_t *cddb_data)
{
// We have the file, save it for cache.
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
if (!mp_path_exists(cddb_data->cache_dir)) {
// 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_tmsg(MSGT_DEMUX, MSGL_ERR, "Failed to create directory %s.\n",
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_IRUSR | S_IWUSR);
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_tmsg(MSGT_DEMUX, MSGL_WARN, "Not all of the xmcd file has been written.\n");
close(file_fd);
return -1;
}
close(file_fd);
return 0;
}
static 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_tmsg(MSGT_DEMUX, MSGL_ERR, "parse error");
return -1;
}
switch (status) {
case 210:
ret = sscanf(http_hdr->body, "%d %99s %08lx", &status,
category, &disc_id);
if (ret != 3) {
mp_tmsg(MSGT_DEMUX, MSGL_ERR, "parse error");
return -1;
}
// Check if it's a xmcd database file
ptr = strstr(http_hdr->body, "# xmcd");
if (ptr == NULL) {
mp_tmsg(MSGT_DEMUX, MSGL_ERR,
"Invalid xmcd database file returned.\n");
return -1;
}
ptr = strdup(ptr);
// Ok found the beginning of the file
// look for the end
ptr2 = strstr(ptr, "\n.\r\n");
if (!ptr2)
ptr2 = strstr(ptr, "\n.\n");
if (ptr2) {
ptr2++;
} else {
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_tmsg(MSGT_DEMUX, MSGL_ERR, "unexpected FIXME\n");
return -1;
}
cddb_data->xmcd_file = ptr;
cddb_data->xmcd_file_size = ptr2 - ptr;
cddb_data->xmcd_file[cddb_data->xmcd_file_size] = '\0';
return cddb_write_cache(cddb_data);
default:
mp_tmsg(MSGT_DEMUX, MSGL_FIXME, "unhandled code\n");
}
return 0;
}
static 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);
}
static 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_tmsg(MSGT_DEMUX, MSGL_ERR, "Unable to find end of line.\n");
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, "%99s %08lx %99s", cddb_data->category,
&(cddb_data->disc_id), album_title);
if (ret != 3) {
mp_tmsg(MSGT_DEMUX, MSGL_ERR, "parse error");
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;
}
len = FFMIN(sizeof(album_title) - 1, len);
strncpy(album_title, ptr, len);
album_title[len]='\0';
}
mp_tmsg(MSGT_DEMUX, MSGL_STATUS, "Parse OK, found: %s\n", album_title);
return 0;
}
static 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_tmsg(MSGT_DEMUX, MSGL_ERR, "parse error");
return -1;
}
switch (status) {
case 200:
// Found exact match
ret = sscanf(http_hdr->body, "%d %99s %08lx %99s", &status,
cddb_data->category, &(cddb_data->disc_id), album_title);
if (ret != 4) {
mp_tmsg(MSGT_DEMUX, MSGL_ERR, "parse error");
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;
}
len = FFMIN(sizeof(album_title) - 1, len);
strncpy(album_title, ptr, len);
album_title[len]='\0';
}
mp_tmsg(MSGT_DEMUX, MSGL_STATUS, "Parse OK, found: %s\n", album_title);
return cddb_request_titles(cddb_data);
case 202:
// No match found
mp_tmsg(MSGT_DEMUX, MSGL_WARN, "Album not found.\n");
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_tmsg(MSGT_DEMUX, MSGL_FIXME,
"Server returns: Command syntax error\n");
break;
default:
mp_tmsg(MSGT_DEMUX, MSGL_FIXME, "unhandled code\n");
}
return -1;
}
static 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_tmsg(MSGT_DEMUX, MSGL_ERR, "parse error");
return -1;
}
switch (status) {
case 210:
ptr = strstr(http_hdr->body, "max proto:");
if (ptr == NULL) {
mp_tmsg(MSGT_DEMUX, MSGL_ERR, "parse error");
return -1;
}
ret = sscanf(ptr, "max proto: %d", &max);
if (ret != 1) {
mp_tmsg(MSGT_DEMUX, MSGL_ERR, "parse error");
return -1;
}
cddb_data->freedb_proto_level = max;
return 0;
default:
mp_tmsg(MSGT_DEMUX, MSGL_FIXME, "unhandled code\n");
}
return -1;
}
static int cddb_get_proto_level(cddb_data_t *cddb_data)
{
return cddb_http_request("stat", cddb_proto_level_parse, cddb_data);
}
static 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 Pérez 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",
user_name, host_name, mplayer_version);
}
static 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_tmsg(MSGT_DEMUX, MSGL_ERR, "Failed to get the protocol level.\n");
return -1;
}
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;
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_tmsg(MSGT_OPEN, MSGL_ERR, "Failed to open %s device.\n", 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
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_CDDB_DISCID=%08lx\n",
cddb_data.disc_id);
// 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_tmsg(MSGT_DEMUX, MSGL_ERR, "No CD in the drive.\n");
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_tmsg(MSGT_DEMUX, MSGL_ERR, "Memory allocation failed.\n");
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 *
***************/
static 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;
}
static 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;
}
static 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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