/*
* Copyright (C) 2003-2007 Andre Noll <maan@systemlinux.org>
*
- * 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, USA.
+ * Licensed under the GPL v2. For licencing details see COPYING.
*/
/** \file mp3_afh.c para_server's mp3 audio format handler */
* Johannes Overmann <overmann@iname.com>
*/
-#include "server.cmdline.h"
#include "server.h"
-#include "vss.h"
#include "error.h"
-#include "fd.h"
#include "string.h"
/** \cond some defines and structs which are only used in this file */
int id3_isvalid;
struct id3tag id3;
int vbr;
- long unsigned br_average;
- int freq;
};
/** \endcond */
h->mode = 4; /* invalid */
return mode_text[h->mode];
}
+
+static int header_channels(struct mp3header *h)
+{
+ if (h->mode > 3)
+ return 0;
+ if (h->mode < 3)
+ return 2;
+ return 1;
+}
+
static int header_bitrate(struct mp3header *h)
{
- if (h->layer > 3 || h->bitrate > 14)
+ if (!h->layer || h->layer > 3 || h->bitrate > 14 || !h->bitrate)
return -E_HEADER_BITRATE;
return mp3info_bitrate[h->version & 1][3 - h->layer][h->bitrate - 1];
}
int v = mp3.id3_isvalid;
snprintf(afi->info_string, MMD_INFO_SIZE,
- "audio_file_info1:%lu x %lums, %lu kbit/s (%cbr) %i KHz %s\n"
+ "audio_file_info1:%lu x %lums, %u kbit/s (%cbr) %i KHz %s\n"
"audio_file_info2:%s, by %s\n"
"audio_file_info3:A: %s, Y: %s, C: %s\n",
afi->chunks_total,
tv2ms(&afi->chunk_tv),
- mp3.br_average,
+ afi->bitrate,
mp3.vbr? 'v' : 'c',
- mp3.freq / 1000,
+ afi->frequency / 1000,
header_mode(&mp3.header),
v && *mp3.id3.title? mp3.id3.title : "(title tag not set)",
v && *mp3.id3.artist? mp3.id3.artist : "(artist tag not set)",
return 0;
}
-/**
+/*
* get next MP3 frame header.
*
- * \param stream to read the header from
- * \param header structure that gets filled in by get_header()
- *
- * \return On success, the header frame length is returned. A return value of
- * zero means that we did not retrieve a valid frame header, and a negative
- * return value indicates an error.
+ * On success, the header frame length is returned and the given header
+ * structure that is filled in. A return value of zero means that we did not
+ * retrieve a valid frame header, and a negative return value indicates an
+ * error.
*/
-static int get_header(unsigned char *map, off_t numbytes, off_t *fpos,
+static int get_header(unsigned char *map, size_t numbytes, off_t *fpos,
struct mp3header *header)
{
int fl, ret;
return ret;
}
-/**
+/*
* find the next mp3 header
*
- * \return On success, the length of the next frame header. If the end of the
- * file was reached, the function returns zero. On errors, a negative value is
- * returned.
- *
+ * Return the length of the next frame header or zero if the end of the file is
+ * reached.
*/
-static int mp3_seek_next_header(unsigned char *map, off_t numbytes, off_t *fpos)
+static int mp3_seek_next_header(unsigned char *map, size_t numbytes, off_t *fpos)
{
int k, l = 0, first_len;
struct mp3header h, h2;
long valid_start = 0;
- while (1) {
- while ((*fpos)++ < numbytes && map[*fpos] != 0xff)
- ;
- if (*fpos >= numbytes)
- return 0;
+ for (; *fpos < numbytes; (*fpos)++) {
+ if (map[*fpos] != 0xff)
+ continue;
valid_start = *fpos;
first_len = get_header(map, numbytes, fpos, &h);
if (first_len <= 0)
return first_len;
}
}
+ return 0;
}
-static void mp3_get_id3(unsigned char *map, off_t numbytes, off_t *fpos)
+static void mp3_get_id3(unsigned char *map, size_t numbytes, off_t *fpos)
{
mp3.id3_isvalid = 0;
mp3.id3.title[0] = '\0';
if (numbytes < 128)
return;
*fpos = numbytes - 128;
- if (strncmp("TAG", map + *fpos, 3)) {
+ if (strncmp("TAG", (char *) map + *fpos, 3)) {
PARA_INFO_LOG("%s", "no id3 tag\n");
return;
}
unpad(mp3.id3.comment);
}
-static int find_valid_start(unsigned char *map, off_t numbytes, off_t *fpos)
+static int find_valid_start(unsigned char *map, size_t numbytes, off_t *fpos)
{
int frame_len;
return frame_len;
}
-static int mp3_read_info(unsigned char *map, off_t numbytes,
+static int mp3_read_info(unsigned char *map, size_t numbytes,
struct audio_format_info *afi)
{
long fl_avg = 0, freq_avg = 0, br_avg = 0;
mp3_get_id3(map, numbytes, &fpos);
fpos = 0;
mp3.vbr = 0;
- mp3.freq = 0;
while (1) {
- int freq, br, fl;
+ unsigned long freq, br, fl;
struct timeval tmp, cct; /* current chunk time */
fpos += len;
len = find_valid_start(map, numbytes, &fpos);
if (len <= 0)
break;
- freq = header_frequency(&mp3.header);
- br = header_bitrate(&mp3.header);
- fl = frame_length(&mp3.header);
- if (freq < 0 || br < 0 || fl < 0)
+ ret = header_frequency(&mp3.header);
+ if (ret < 0)
+ continue;
+ freq = ret;
+ ret = header_bitrate(&mp3.header);
+ if (ret < 0)
+ continue;
+ br = ret;
+ ret = frame_length(&mp3.header);
+ if (ret < 0)
continue;
+ fl = ret;
tmp.tv_sec = fl;
tmp.tv_usec = 0;
tv_divide(br * 125, &tmp, &cct);
fl_avg = fl;
continue;
}
- freq_avg += (freq - freq_avg) / (afi->chunks_total + 1);
- fl_avg += (fl - fl_avg) / (afi->chunks_total + 1);
- br_avg += (br - br_avg) / ((long)afi->chunks_total + 1);
+ freq_avg += ((long)freq - freq_avg) / ((long)afi->chunks_total + 1);
+ fl_avg += ((long)fl - fl_avg) / ((long)afi->chunks_total + 1);
+ br_avg += ((long)br - br_avg) / ((long)afi->chunks_total + 1);
if (old_br != br)
mp3.vbr = 1;
old_br = br;
if (!afi->chunks_total || !freq_avg || !br_avg)
goto err_out;
afi->chunk_table[afi->chunks_total] = numbytes - 1;
- mp3.br_average = br_avg;
- mp3.freq = freq_avg;
+ afi->bitrate = br_avg;
+ afi->frequency = freq_avg;
+ afi->channels = header_channels(&mp3.header);
afi->seconds_total = (tv2ms(&total_time) + 500) / 1000;
tv_divide(afi->chunks_total, &total_time, &afi->chunk_tv);
PARA_DEBUG_LOG("%lu chunks, each %lums\n", afi->chunks_total,
/*
* Read mp3 information from audio file
*/
-static int mp3_get_file_info(FILE *file, char *map, off_t numbytes,
+static int mp3_get_file_info(char *map, size_t numbytes,
struct audio_format_info *afi)
{
int ret;
projects / paraslash.git / blobdiff