filter_chain.c: Cosmetics.
[paraslash.git] / mp3_afh.c
index b510e72..4093a31 100644 (file)
--- a/mp3_afh.c
+++ b/mp3_afh.c
@@ -1,19 +1,7 @@
 /*
- * Copyright (C) 2003-2007 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2003-2008 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.h"
+#include "para.h"
 #include "error.h"
-#include "fd.h"
+#include "afh.h"
 #include "string.h"
+#include "afs.h"
+#include "server.h"
 
 /** \cond some defines and structs which are only used in this file */
 
@@ -123,7 +113,7 @@ static int header_channels(struct mp3header *h)
 
 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];
 }
@@ -144,25 +134,26 @@ static int frame_length(struct mp3header *header)
                + header->padding;
 }
 
-static void write_info_str(struct audio_format_info *afi)
+static void write_info_str(struct afh_info *afhi)
 {
        int v = mp3.id3_isvalid;
 
-       snprintf(afi->info_string, MMD_INFO_SIZE,
-               "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),
-               afi->bitrate,
-               mp3.vbr? 'v' : 'c',
-               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)",
-               v && *mp3.id3.album? mp3.id3.album : "(album tag not set)",
-               v && *mp3.id3.year? mp3.id3.year : "????",
-               v && *mp3.id3.comment? mp3.id3.comment : "(comment tag not set)"
+       snprintf(afhi->info_string, MMD_INFO_SIZE,
+               "%s: %cbr, %s\n" /* audio file info*/
+               "%s: %s, by %s\n" /* taginfo1 */
+               "%s: A: %s, Y: %s, C: %s\n", /* taginfo 2*/
+               status_item_list[SI_AUDIO_FILE_INFO], mp3.vbr? 'v' : 'c',
+                       header_mode(&mp3.header),
+               status_item_list[SI_TAGINFO1], v && *mp3.id3.title?
+                       mp3.id3.title : "(title tag not set)",
+                       v && *mp3.id3.artist?
+                       mp3.id3.artist : "(artist tag not set)",
+               status_item_list[SI_TAGINFO2],
+                       v && *mp3.id3.album?
+                               mp3.id3.album : "(album tag not set)",
+                       v && *mp3.id3.year? mp3.id3.year : "????",
+                       v && *mp3.id3.comment?
+                               mp3.id3.comment : "(comment tag not set)"
        );
 }
 
@@ -172,7 +163,7 @@ static void write_info_str(struct audio_format_info *afi)
 static char *unpad(char *string)
 {
        char *pos = string + strlen(string) - 1;
-       while (isspace(pos[0]))
+       while (para_isspace(pos[0]))
                (pos--)[0] = 0;
        return string;
 }
@@ -201,7 +192,7 @@ static int compare_headers(struct mp3header *h1,struct mp3header *h2)
  * 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;
@@ -240,7 +231,7 @@ out:
  * 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;
@@ -270,7 +261,7 @@ static int mp3_seek_next_header(unsigned char *map, off_t numbytes, off_t *fpos)
        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';
@@ -281,8 +272,8 @@ static void mp3_get_id3(unsigned char *map, off_t numbytes, off_t *fpos)
        if (numbytes < 128)
                return;
        *fpos = numbytes - 128;
-       if (strncmp("TAG", map + *fpos, 3)) {
-               PARA_INFO_LOG("%s", "no id3 tag\n");
+       if (strncmp("TAG", (char *) map + *fpos, 3)) {
+               PARA_DEBUG_LOG("no id3 tag\n");
                return;
        }
        *fpos = numbytes - 125;
@@ -308,7 +299,7 @@ static void mp3_get_id3(unsigned char *map, off_t numbytes, off_t *fpos)
        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;
 
@@ -326,8 +317,8 @@ static int find_valid_start(unsigned char *map, off_t numbytes, off_t *fpos)
        return frame_len;
 }
 
-static int mp3_read_info(unsigned char *map, off_t numbytes,
-               struct audio_format_info *afi)
+static int mp3_read_info(unsigned char *map, size_t numbytes,
+               struct afh_info *afhi)
 {
        long fl_avg = 0, freq_avg = 0, br_avg = 0;
        int ret, len = 0, old_br = -1;
@@ -335,86 +326,93 @@ static int mp3_read_info(unsigned char *map, off_t numbytes,
        unsigned chunk_table_size = 1000; /* gets increased on demand */
        off_t fpos = 0;
 
-       afi->chunks_total = 0;
-       afi->chunk_table = para_malloc(chunk_table_size * sizeof(size_t));
+       afhi->chunks_total = 0;
+       afhi->chunk_table = para_malloc(chunk_table_size * sizeof(size_t));
        mp3_get_id3(map, numbytes, &fpos);
        fpos = 0;
        mp3.vbr = 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);
                tv_add(&cct, &total_time, &tmp);
                total_time = tmp;
                //PARA_DEBUG_LOG("%s: br: %d, freq: %d, fl: %d, cct: %lu\n", __func__, br, freq, fl, cct.tv_usec);
-               if (afi->chunks_total >= chunk_table_size) {
+               if (afhi->chunks_total >= chunk_table_size) {
                        chunk_table_size *= 2;
-                       afi->chunk_table = para_realloc(afi->chunk_table,
+                       afhi->chunk_table = para_realloc(afhi->chunk_table,
                                chunk_table_size * sizeof(size_t));
                }
-               afi->chunk_table[afi->chunks_total] = fpos;
-//             if (afi->chunks_total < 10 || !(afi->chunks_total % 1000))
-//                     PARA_INFO_LOG("chunk #%lu: %zd\n", afi->chunks_total,
-//                             afi->chunk_table[afi->chunks_total]);
-               afi->chunks_total++;
-               if (afi->chunks_total == 1) {
+               afhi->chunk_table[afhi->chunks_total] = fpos;
+//             if (afhi->chunks_total < 10 || !(afhi->chunks_total % 1000))
+//                     PARA_INFO_LOG("chunk #%lu: %zd\n", afhi->chunks_total,
+//                             afhi->chunk_table[afhi->chunks_total]);
+               afhi->chunks_total++;
+               if (afhi->chunks_total == 1) {
                        freq_avg = freq;
                        br_avg = br;
                        old_br = br;
                        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)afhi->chunks_total + 1);
+               fl_avg += ((long)fl - fl_avg) / ((long)afhi->chunks_total + 1);
+               br_avg += ((long)br - br_avg) / ((long)afhi->chunks_total + 1);
                if (old_br != br)
                        mp3.vbr = 1;
                old_br = br;
        }
        ret = -E_MP3_INFO;
-       if (!afi->chunks_total || !freq_avg || !br_avg)
+       if (!afhi->chunks_total || !freq_avg || !br_avg)
                goto err_out;
-       afi->chunk_table[afi->chunks_total] = numbytes - 1;
-       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,
-               tv2ms(&afi->chunk_tv));
-       tv_scale(3, &afi->chunk_tv, &afi->eof_tv);
-       PARA_DEBUG_LOG("eof timeout: %lu\n", tv2ms(&afi->eof_tv));
+       afhi->chunk_table[afhi->chunks_total] = numbytes - 1;
+       afhi->bitrate = br_avg;
+       afhi->frequency = freq_avg;
+       afhi->channels = header_channels(&mp3.header);
+       afhi->seconds_total = (tv2ms(&total_time) + 500) / 1000;
+       tv_divide(afhi->chunks_total, &total_time, &afhi->chunk_tv);
+       PARA_DEBUG_LOG("%lu chunks, each %lums\n", afhi->chunks_total,
+               tv2ms(&afhi->chunk_tv));
+       tv_scale(3, &afhi->chunk_tv, &afhi->eof_tv);
+       PARA_DEBUG_LOG("eof timeout: %lu\n", tv2ms(&afhi->eof_tv));
        return 1;
 err_out:
-       PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret));
-       free(afi->chunk_table);
+       PARA_ERROR_LOG("%s\n", para_strerror(-ret));
+       free(afhi->chunk_table);
        return ret;
 }
 
 /*
  * Read mp3 information from audio file
  */
-static int mp3_get_file_info(char *map, off_t numbytes,
-               struct audio_format_info *afi)
+int mp3_get_file_info(char *map, size_t numbytes,
+               struct afh_info *afhi)
 {
        int ret;
 
-       ret = mp3_read_info((unsigned char *)map, numbytes, afi);
+       ret = mp3_read_info((unsigned char *)map, numbytes, afhi);
        if (ret < 0)
                return ret;
-       write_info_str(afi);
-       if (afi->seconds_total < 2 || !afi->chunks_total)
+       write_info_str(afhi);
+       if (afhi->seconds_total < 2 || !afhi->chunks_total)
                return -E_MP3_INFO;
        return 1;
 }