fileinfo.c

xmms-1.2.10.tar.gz学习使用的就下吧

/*  XMMS - Cross-platform multimedia player
 *  Copyright (C) 1998-2002  Peter Alm, Mikael Alm, Olle Hallnas,
 *                           Thomas Nilsson and 4Front Technologies
 *  Copyright (C) 1999-2004  Haavard Kvaalen
 *
 *  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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdarg.h>
#include <string.h>
#include <errno.h>
#include <libxmms/xentry.h>
#include "mpg123.h"

static GtkWidget *window = NULL;
static GtkWidget *filename_entry, *id3_frame;
static GtkWidget *title_entry, *artist_entry, *album_entry, *year_entry;
static GtkWidget *tracknum_entry, *comment_entry, *genre_combo;
static GtkWidget *mpeg_level, *mpeg_bitrate, *mpeg_samplerate, *mpeg_flags;
static GtkWidget *mpeg_fileinfo;

static GList *genre_list;
struct genre_item {
	const char *name;
	int id;
};
static int current_genre;
static char *current_filename;

extern char *mpg123_filename;
extern int mpg123_bitrate, mpg123_frequency, mpg123_layer, mpg123_lsf, mpg123_mode;
extern gboolean mpg123_stereo, mpg123_mpeg25;

#define MAX_STR_LEN 100

static void label_set_text(GtkWidget * label, char *str, ...)
G_GNUC_PRINTF(2, 3);

static void set_entry_tag(GtkEntry * entry, char * tag, int length)
{
	int stripped_len;
	char *text;

	stripped_len = mpg123_strip_spaces(tag, length);
	text = g_strdup_printf("%-*.*s", stripped_len, stripped_len, tag);
	gtk_entry_set_text(entry, text);
	g_free(text);
}

static void get_entry_tag(GtkEntry * entry, char * tag, int length)
{
	strncpy(tag, gtk_entry_get_text(entry), length);
}

static int genre_find_index(GList *genre_list, int id)
{
	int idx = 0;
	while (genre_list)
	{
		struct genre_item *item = genre_list->data;
		if (item->id == id)
			break;
		idx++;
		genre_list = genre_list->next;
	}
	return idx;
}

static int genre_comp_func(gconstpointer a, gconstpointer b)
{
	const struct genre_item *ga = a, *gb = b;
	return strcasecmp(ga->name, gb->name);
}

static void save_cb(GtkWidget * w, gpointer data)
{
	int fd;
	struct id3v1tag_t tag;
	char *msg = NULL;

	if (!strncasecmp(current_filename, "http://", 7))
		return;

	if ((fd = open(current_filename, O_RDWR)) != -1)
	{
		int tracknum;

		lseek(fd, -128, SEEK_END);
		read(fd, &tag, sizeof (struct id3v1tag_t));

		if (!strncmp(tag.tag, "TAG", 3))
			lseek(fd, -128, SEEK_END);
		else
			lseek(fd, 0, SEEK_END);
		tag.tag[0] = 'T';
		tag.tag[1] = 'A';
		tag.tag[2] = 'G';
		get_entry_tag(GTK_ENTRY(title_entry), tag.title, 30);
		get_entry_tag(GTK_ENTRY(artist_entry), tag.artist, 30);
		get_entry_tag(GTK_ENTRY(album_entry), tag.album, 30);
		get_entry_tag(GTK_ENTRY(year_entry), tag.year, 4);
		tracknum = atoi(gtk_entry_get_text(GTK_ENTRY(tracknum_entry)));
		if (tracknum > 0)
		{
			get_entry_tag(GTK_ENTRY(comment_entry),
				      tag.u.v1_1.comment, 28);
			tag.u.v1_1.__zero = 0;
			tag.u.v1_1.track_number = MIN(tracknum, 255);
		}
		else
			get_entry_tag(GTK_ENTRY(comment_entry),
				      tag.u.v1_0.comment, 30);
		tag.genre = current_genre;
		if (write(fd, &tag, sizeof (tag)) != sizeof (tag))
			msg = g_strdup_printf(_("%s\nUnable to write to file: %s"),
					      _("Couldn't write tag!"),
					      strerror(errno));
		close(fd);
	}
	else
		msg = g_strdup_printf(_("%s\nUnable to open file: %s"),
				      _("Couldn't write tag!"),
				      strerror(errno));
	if (msg)
	{
		GtkWidget *mwin = xmms_show_message(_("File Info"), msg,
						    _("Ok"), FALSE, NULL, NULL);
		gtk_window_set_transient_for(GTK_WINDOW(mwin),
					     GTK_WINDOW(window));
		g_free(msg);
	}
	else
		gtk_widget_destroy(window);
}

static void label_set_text(GtkWidget * label, char *str, ...)
{
	va_list args;
	char tempstr[MAX_STR_LEN];

	va_start(args, str);
	g_vsnprintf(tempstr, MAX_STR_LEN, str, args);
	va_end(args);

	gtk_label_set_text(GTK_LABEL(label), tempstr);
}

static void remove_id3_cb(GtkWidget * w, gpointer data)
{
	int fd, len;
	struct id3v1tag_t tag;
	char *msg = NULL;

	if (!strncasecmp(current_filename, "http://", 7))
		return;

	if ((fd = open(current_filename, O_RDWR)) != -1)
	{
		len = lseek(fd, -128, SEEK_END);
		read(fd, &tag, sizeof (struct id3v1tag_t));

		if (!strncmp(tag.tag, "TAG", 3))
		{
			if (ftruncate(fd, len))
				msg = g_strdup_printf(
					_("%s\n"
					  "Unable to truncate file: %s"),
					_("Couldn't remove tag!"),
					strerror(errno));
		}
		else
			msg = strdup(_("No tag to remove!"));
		close(fd);
	}
	else
		msg = g_strdup_printf(_("%s\nUnable to open file: %s"),
				      _("Couldn't remove tag!"),
				      strerror(errno));
	if (msg)
	{
		GtkWidget *mwin = xmms_show_message(_("File Info"), msg,
						    _("Ok"), FALSE, NULL, NULL);
		gtk_window_set_transient_for(GTK_WINDOW(mwin),
					     GTK_WINDOW(window));
		g_free(msg);
	}
	else
		gtk_widget_destroy(window);
}

static void set_mpeg_level_label(gboolean mpeg25, int lsf, int layer)
{
	if (mpeg25)
		label_set_text(mpeg_level, "MPEG 2.5, layer %d", layer);
	else
		label_set_text(mpeg_level, "MPEG %d, layer %d", lsf + 1, layer);
}

static char* channel_mode_name(int mode)
{
	static const char *channel_mode[] =
		{N_("Stereo"), N_("Joint stereo"),
		 N_("Dual channel"), N_("Single channel")};
	if (mode < 0 || mode > 3)
		return "";
	return gettext(channel_mode[mode]);
}

static void file_info_http(char *filename)
{
	gtk_widget_set_sensitive(id3_frame, FALSE);
	if (mpg123_filename && !strcmp(filename, mpg123_filename) &&
	    mpg123_bitrate != 0)
	{
		set_mpeg_level_label(mpg123_mpeg25, mpg123_lsf, mpg123_layer);
		label_set_text(mpeg_bitrate, _("Bitrate: %d kb/s"),
			       mpg123_bitrate);
		label_set_text(mpeg_samplerate, _("Samplerate: %d Hz"),
			       mpg123_frequency);
		label_set_text(mpeg_flags, "%s",
			       channel_mode_name(mpg123_mode));
	}
}

static void genre_selected(GtkList *list, GtkWidget *w, gpointer data)
{
	void * p;
	p = gtk_object_get_data(GTK_OBJECT(w), "genre_id");
	if (p != NULL)
		current_genre = GPOINTER_TO_INT(p);
	else
		current_genre = 0;
}

static void genre_set_popdown(GtkWidget *combo, GList *genres)
{
	struct genre_item *item;
	GtkWidget *w;

	while (genres)
	{
		item = genres->data;
		w = gtk_list_item_new_with_label(item->name);
		gtk_object_set_data(GTK_OBJECT(w), "genre_id",
				    GINT_TO_POINTER(item->id));
		gtk_widget_show(w);
		gtk_container_add(GTK_CONTAINER(GTK_COMBO(combo)->list), w);
		genres = genres->next;
	}
}

void mpg123_file_info_box(char *filename)
{
	int i;
	struct id3v1tag_t tag;
	FILE *fh;
	char *tmp, *title;
	const char *emphasis[4];
	const char *bool_label[2];

	emphasis[0] = _("None");
	emphasis[1] = _("50/15 ms");
	emphasis[2] = "";
	emphasis[3] = _("CCIT J.17");
	bool_label[0] = _("No");
	bool_label[1] = _("Yes");

	if (!window)
	{
		GtkWidget *vbox, *hbox, *left_vbox, *table;
		GtkWidget *mpeg_frame, *mpeg_box;
		GtkWidget *label, *filename_hbox;
		GtkWidget *bbox, *save, *remove_id3, *cancel;
		
		window = gtk_window_new(GTK_WINDOW_DIALOG);
		gtk_window_set_policy(GTK_WINDOW(window), FALSE, FALSE, FALSE);
		gtk_signal_connect(GTK_OBJECT(window), "destroy",
				   gtk_widget_destroyed, &window);
		gtk_container_set_border_width(GTK_CONTAINER(window), 10);

		vbox = gtk_vbox_new(FALSE, 10);
		gtk_container_add(GTK_CONTAINER(window), vbox);

		filename_hbox = gtk_hbox_new(FALSE, 5);
		gtk_box_pack_start(GTK_BOX(vbox), filename_hbox,
				   FALSE, TRUE, 0);

		label = gtk_label_new(_("Filename:"));
		gtk_box_pack_start(GTK_BOX(filename_hbox), label,
				   FALSE, TRUE, 0);
		filename_entry = xmms_entry_new();
		gtk_editable_set_editable(GTK_EDITABLE(filename_entry), FALSE);
		gtk_box_pack_start(GTK_BOX(filename_hbox),