unsigned int emphasis;
};
-struct id3tag {
- char title[31];
- char artist[31];
- char album[31];
- char year[5];
- char comment[31];
-};
-
-struct mp3info {
- struct mp3header header;
- int id3_isvalid;
- struct id3tag id3;
- int vbr;
-};
-
/** \endcond */
static const int frequencies[3][4] = {
{22050,24000,16000,50000}, /* MPEG 2.0 */
static const int frame_size_index[] = {24000, 72000, 72000};
static const char *mode_text[] = {"stereo", "joint stereo", "dual channel", "mono", "invalid"};
-static struct mp3info mp3;
+/*
+ * Remove trailing whitespace from the end of a string
+ */
+static char *unpad(char *string)
+{
+ char *pos = string + strlen(string) - 1;
+ while (para_isspace(pos[0]))
+ (pos--)[0] = 0;
+ return string;
+}
+
+static char *mp3_get_id3(unsigned char *map, size_t numbytes)
+{
+ char title[31], artist[31], album[31], year[5], comment[31];
+ off_t fpos;
+
+ if (numbytes < 128 || strncmp("TAG", (char *)map + numbytes - 128, 3)) {
+ PARA_DEBUG_LOG("no id3 v1 tag\n");
+ return make_message("%s: (no id3 v1 tag)\n%s:\n",
+ status_item_list[SI_TAGINFO1],
+ status_item_list[SI_TAGINFO2]);
+ }
+ fpos = numbytes - 125;
+ memcpy(title, map + fpos, 30);
+ fpos += 30;
+ title[30] = '\0';
+ memcpy(artist, map + fpos, 30);
+ fpos += 30;
+ artist[30] = '\0';
+ memcpy(album, map + fpos, 30);
+ fpos += 30;
+ album[30] = '\0';
+ memcpy(year, map + fpos, 4);
+ fpos += 4;
+ year[4] = '\0';
+ memcpy(comment, map + fpos, 30);
+ comment[30] = '\0';
+ unpad(title);
+ unpad(artist);
+ unpad(album);
+ unpad(year);
+ unpad(comment);
+ return make_message("%s: %s, by %s\n" /* taginfo1 */
+ "%s: A: %s, Y: %s, C: %s\n", /* taginfo 2*/
+ status_item_list[SI_TAGINFO1],
+ *title? title : "(title tag not set)",
+ *artist? artist : "(artist tag not set)",
+ status_item_list[SI_TAGINFO2],
+ *album? album : "(album tag not set)",
+ *year? year : "????",
+ *comment? comment : "(comment tag not set)"
+ );
+}
static int header_frequency(struct mp3header *h)
{
+ header->padding;
}
-static void write_info_str(struct afh_info *afhi)
-{
- int v = mp3.id3_isvalid;
-
- afhi->info_string = make_message(
- "%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)"
- );
-}
-
-/*
- * Remove trailing whitespace from the end of a string
- */
-static char *unpad(char *string)
-{
- char *pos = string + strlen(string) - 1;
- while (para_isspace(pos[0]))
- (pos--)[0] = 0;
- return string;
-}
-
static int compare_headers(struct mp3header *h1,struct mp3header *h2)
{
if ((*(uint*)h1) == (*(uint*)h2))
return 0;
}
-static void mp3_get_id3(unsigned char *map, size_t numbytes)
-{
- off_t fpos;
-
- mp3.id3_isvalid = 0;
- mp3.id3.title[0] = '\0';
- mp3.id3.artist[0] = '\0';
- mp3.id3.album[0] = '\0';
- mp3.id3.comment[0] = '\0';
- mp3.id3.year[0] = '\0';
- if (numbytes < 128)
- return;
- fpos = numbytes - 128;
- if (strncmp("TAG", (char *) map + fpos, 3)) {
- PARA_DEBUG_LOG("no id3 tag\n");
- return;
- }
- fpos = numbytes - 125;
- memcpy(mp3.id3.title, map + fpos, 30);
- fpos += 30;
- mp3.id3.title[30] = '\0';
- memcpy(mp3.id3.artist, map + fpos, 30);
- fpos += 30;
- mp3.id3.artist[30] = '\0';
- memcpy(mp3.id3.album, map + fpos, 30);
- fpos += 30;
- mp3.id3.album[30] = '\0';
- memcpy(mp3.id3.year, map + fpos, 4);
- fpos += 4;
- mp3.id3.year[4] = '\0';
- memcpy(mp3.id3.comment, map + fpos, 30);
- mp3.id3.comment[30] = '\0';
- mp3.id3_isvalid = 1;
- unpad(mp3.id3.title);
- unpad(mp3.id3.artist);
- unpad(mp3.id3.album);
- unpad(mp3.id3.year);
- unpad(mp3.id3.comment);
-}
-
-static int find_valid_start(unsigned char *map, size_t numbytes, off_t *fpos)
+static int find_valid_start(unsigned char *map, size_t numbytes, off_t *fpos,
+ struct mp3header *header)
{
int frame_len;
- frame_len = get_header(map, numbytes, fpos, &mp3.header);
+ frame_len = get_header(map, numbytes, fpos, header);
if (frame_len < 0)
return frame_len;
if (!frame_len) {
- frame_len = mp3_seek_next_header(map, numbytes, fpos, &mp3.header);
+ frame_len = mp3_seek_next_header(map, numbytes, fpos, header);
if (frame_len <= 0)
return frame_len;
} else
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;
+ long freq_avg = 0, br_avg = 0;
+ int ret, len = 0, old_br = -1, vbr = 0;
struct timeval total_time = {0, 0};
unsigned chunk_table_size = 1000; /* gets increased on demand */
off_t fpos = 0;
+ struct mp3header header;
+ char *taginfo;
afhi->chunks_total = 0;
afhi->chunk_table = para_malloc(chunk_table_size * sizeof(size_t));
- mp3_get_id3(map, numbytes);
- mp3.vbr = 0;
+ taginfo = mp3_get_id3(map, numbytes);
while (1) {
unsigned long freq, br, fl;
struct timeval tmp, cct; /* current chunk time */
fpos += len;
- len = find_valid_start(map, numbytes, &fpos);
+ len = find_valid_start(map, numbytes, &fpos, &header);
if (len <= 0)
break;
- ret = header_frequency(&mp3.header);
+ ret = header_frequency(&header);
if (ret < 0)
continue;
freq = ret;
- ret = header_bitrate(&mp3.header);
+ ret = header_bitrate(&header);
if (ret < 0)
continue;
br = ret;
- ret = frame_length(&mp3.header);
+ ret = frame_length(&header);
if (ret < 0)
continue;
fl = ret;
freq_avg = freq;
br_avg = br;
old_br = br;
- fl_avg = fl;
continue;
}
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;
+ vbr = 1;
old_br = br;
}
ret = -E_MP3_INFO;
afhi->chunk_table[afhi->chunks_total] = numbytes - 1;
afhi->bitrate = br_avg;
afhi->frequency = freq_avg;
- afhi->channels = header_channels(&mp3.header);
+ afhi->channels = header_channels(&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));
+ afhi->info_string = make_message("%s: %cbr, %s\n%s",
+ status_item_list[SI_AUDIO_FILE_INFO], vbr? 'v' : 'c',
+ header_mode(&header), taginfo);
+ free(taginfo);
return 1;
err_out:
+ free(taginfo);
PARA_ERROR_LOG("%s\n", para_strerror(-ret));
free(afhi->chunk_table);
return ret;
ret = mp3_read_info((unsigned char *)map, numbytes, afhi);
if (ret < 0)
return ret;
- write_info_str(afhi);
if (afhi->seconds_total < 2 || !afhi->chunks_total)
return -E_MP3_INFO;
return 1;
projects / paraslash.git / blobdiff