ref: b077292778791b645ae85bc6fc44723aa731d43e
parent: 7e49aa4ec42404622aadfad2f0a360d162a31f5d
author: menno <menno>
date: Fri Feb 8 05:05:59 EST 2002
added XMMS plugin to CVS
--- /dev/null
+++ b/plugins/xmms/COPYING
@@ -1,0 +1,340 @@
+ GNU GENERAL PUBLIC LICENSE
+ Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+ 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The licenses for most software are designed to take away your
+freedom to share and change it. By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users. This
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+Foundation's software and to any other program whose authors commit to
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+the GNU Library General Public License instead.) You can apply it to
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+
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+
+ GNU GENERAL PUBLIC LICENSE
+ TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+ 0. This License applies to any program or other work which contains
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+ (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.
+
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+ Gnomovision version 69, Copyright (C) year name of author
+ Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, the commands you use may
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+
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+
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+ `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+ <signature of Ty Coon>, 1 April 1989
+ Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs. If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library. If this is what you want to do, use the GNU Library General
+Public License instead of this License.
--- /dev/null
+++ b/plugins/xmms/Makefile
@@ -1,0 +1,5 @@
+libaac-XMMS.so: aac-XMMS.c
+ gcc -shared -o $@ aac-XMMS.c -I/usr/include/glib-1.2/ -I/usr/lib/glib/include -I/usr/include/gtk-1.2/ -lfaad2 -lid3 -lz
+
+clean:
+ rm -f libaac-XMMS.so aac-XMMS.o
--- /dev/null
+++ b/plugins/xmms/README
@@ -1,0 +1,39 @@
+aac-XMMS
+XMMS input plugin for AAC files.
+Albert Fong <alfong@mail.utexas.edu>
+February 7, 2002
+
+Dependencies
+============
+
+aac-XMMS uses FAAD as the AAC audio decoder, and id3lib for ID3v2 tag
+functionality.
+
+FAAD: www.audiocoding.com
+ Use the CVS branch. If using the january 26 release, at least
+ apply the patch from the forum (01-26-02 22:31), it'll fix the
+ crashes at the end of some AAC files.
+
+id3lib: id3lib.sourceforge.net
+ Version 3.8.0pre2. No modifications necessary.
+
+Building
+========
+
+Modify the supplied Makefile to match your build environment. You may have
+to update the include directories.
+
+./make
+
+Copy libaac-XMMS.so to ~/.xmms/Plugins or to your XMMS plugin directory.
+
+Notes
+=====
+
+AAC files are recognized by an .aac extension.
+
+Will not recognize files with unicode characters in the filename.
+
+Sometimes, seeking to the very last seconds of a file will cause a decode
+error: "Unable to find ADTS syncword".
+
--- /dev/null
+++ b/plugins/xmms/aac-XMMS.c
@@ -1,0 +1,712 @@
+/* aac-XMMS.c
+ *
+ * XMMS input plugin that decodes AAC files.
+ *
+ * Copyright (C) 2001 Albert Fong
+ *
+ * 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.
+ *
+ */
+
+
+/*
+ * This plugin depends on XMMS 1.2.5+, faad2-26012002, id3lib-3.8.0pre2
+ * zlib, and at least glib-1.2.
+ *
+ * XMMS: www.xmms.org
+ * FAAC/FAAD: www.audiocoding.com
+ * id3lib: id3lib.sourceforge.net
+ *
+ * Planned updates:
+ *
+ * Configuration panel in XMMS.
+ *
+ * File info panel in XMMS.
+ *
+ * Allow the buffer size to be customized, or buffer the entire
+ * file before decoding.
+ *
+ * Choose to enable or disable seeking. Currently, the plugin needs
+ * to build a position table first before seeking is possible. This
+ * requires an initial pass through the file before decoding. This
+ * is not desirable if the file is streamed across the network or from
+ * slow storage media.
+ *
+ * Choose to enable or disable play time calculation in the playlist.
+ * Again, this requires an initial pass to calculate the play time.
+ *
+ * VBR calculation.
+ *
+ * Handle unicode ID3 tags properly.
+ *
+ * A more efficient method of handling streaming files, seeking, and play
+ * time calculation is desirable.
+ */
+
+/* Update: February 7, 2002
+ *
+ * Updated to remove id3lib modifications, and general clean up for
+ * release.
+ */
+
+/* Update: January 26, 2002
+ *
+ * Updated to work with January 26 source release for FAAC/FAAD, to
+ * use libfaad2. (www.audiocoding.com, faac.sourceforge.net)
+ */
+
+/* Set to 0 if you want to disable seeking. Useful when streaming files
+ * off of a network drive, so you don't have to download the entire file
+ * to construct the seek_table before playing
+ */
+#define USE_SEEKING 1
+
+#include <stdio.h>
+#include <string.h>
+#include <pthread.h>
+
+#include "faad.h"
+#include "xmms/plugin.h"
+#include "xmms/titlestring.h"
+#include "id3.h"
+#include <glib.h>
+
+#define BUFFER_SIZE 1024*64
+
+static void aac_init(void);
+static int aac_is_our_file(char *filename);
+static void aac_play_file(char *filename);
+static void aac_stop(void);
+static void aac_pause(short paused);
+static void aac_seek(int time);
+static int aac_get_time(void);
+static void aac_cleanup(void);
+static void aac_get_song_info(char *filename, char **title, int *length);
+
+static void *decode_loop(void *arg);
+static gchar *construct_title(char *filename, ID3Tag *id3tag);
+
+/* Constructs a table of file positions for each second of output */
+static void get_AAC_info(FILE *infile, unsigned long *bitrate, unsigned long **seek_table, unsigned long *length);
+
+gboolean playing = FALSE;
+gboolean output_opened = FALSE;
+gint seek_pos = -1;
+pthread_t decode_thread;
+
+InputPlugin aac_ip =
+{+ NULL, /* handle */
+ NULL, /* filename */
+ NULL, /* description */
+ aac_init,
+ NULL, /* about box */
+ NULL, /* configure plugin */
+ aac_is_our_file,
+ NULL, /* scan dir */
+ aac_play_file,
+ aac_stop,
+ aac_pause,
+#if USE_SEEKING
+ aac_seek,
+#else
+ NULL,
+#endif
+ NULL, /* set equalizer */
+ aac_get_time,
+ NULL, /* get volume */
+ NULL, /* set volume */
+ aac_cleanup,
+ NULL, /* obsolete */
+ NULL, /* send visualization data */
+ NULL, /* set player window info */
+ NULL, /* set song title text */
+ aac_get_song_info,
+ NULL, /* file info box */
+ NULL /* pointer to OutputPlugin */
+};
+
+InputPlugin *get_iplugin_info(void)
+{+ aac_ip.description = g_strdup_printf("MPEG-2 AAC Player");+ return &aac_ip;
+}
+
+static void aac_init(void)
+{+}
+
+static int aac_is_our_file(char *filename)
+{+ /* extension check (.AAC) */
+ gchar *ext = NULL;
+ ext = strrchr(filename, '.');
+ if (ext && !strcasecmp(ext, ".aac"))
+ return 1;
+ return 0;
+}
+
+/* Quick hack to avoid patching id3lib - will be removed whenever id3lib
+ * gets a working C API
+ */
+int _ID3_IsTagHeader(const unsigned char data[ID3_TAGHEADERSIZE])
+{+ size_t size = 0;
+ if (data[0] == 0x49 && data[1] == 0x44 && data[2] == 0x33 &&
+ data[3] < 0xff && data[4] < 0xff && data[5] < 0x80)
+ {+ size = (data[9] & 0x7f) |
+ ((data[8] & 0x7f) << 7) |
+ ((data[7] & 0x7f) << 14) |
+ ((data[6] & 0x7f) << 21);
+ return size;
+ }
+ else
+ {+ return -1;
+ }
+}
+
+#define DECODE_ERROR() \
+ do { \+ printf("decode error at file: %s line: %d\n", __FILE__, __LINE__); \+ if (output_opened) \
+ { \+ aac_ip.output->flush(0); \
+ aac_ip.output->close_audio(); \
+ output_opened = FALSE; \
+ } \
+ if (decoder) faacDecClose(decoder); \
+ if (infile) fclose(infile); \
+ if (id3tag) ID3Tag_Delete(id3tag); \
+ g_free(seek_table); \
+ g_free(id3buffer); \
+ g_free(buffer); \
+ g_free(sample_buffer); \
+ playing = FALSE; \
+ pthread_exit(NULL); \
+ } while (0);
+
+static void *aac_decode_loop(void *arg)
+{+ ID3Tag *id3tag = NULL;
+ FILE *infile = NULL;
+ gchar *filename = arg;
+ int tagsize = 0;
+
+ unsigned long buffervalid = 0;
+ unsigned long bufferconsumed = 0;
+
+ unsigned long bytesdecoded;
+ unsigned long samplesdecoded;
+
+ unsigned long samplerate;
+ unsigned long channels;
+
+ unsigned long bitrate = -1;
+
+ int result = 0;
+
+ unsigned char id3header[ID3_TAGHEADERSIZE];
+ unsigned char *id3buffer = NULL;
+ unsigned char *buffer = NULL;
+ short *sample_buffer = NULL;
+ unsigned long *seek_table = NULL;
+ unsigned long seek_table_length = 0;
+
+ faacDecHandle decoder = NULL;
+ faacDecConfigurationPtr config = NULL;
+ faacDecFrameInfo finfo;
+
+ buffer = g_malloc0(BUFFER_SIZE);
+
+ infile = fopen(filename, "rb");
+ if (!infile) DECODE_ERROR();
+ if (fread(id3header, 1, ID3_TAGHEADERSIZE, infile) != ID3_TAGHEADERSIZE)
+ DECODE_ERROR();
+ if ((tagsize = _ID3_IsTagHeader(id3header)) != -1)
+ {+ id3buffer = g_malloc0(tagsize);
+ if (fread(id3buffer, 1, tagsize, infile) != tagsize)
+ DECODE_ERROR();
+ id3tag = ID3Tag_New();
+ ID3Tag_Parse(id3tag, id3header, id3buffer);
+ }
+ else
+ fseek(infile, 0, SEEK_SET);
+
+#if USE_SEEKING
+ get_AAC_info(infile, &bitrate, &seek_table, &seek_table_length);
+#endif
+
+ decoder = faacDecOpen();
+ if (!decoder) DECODE_ERROR();
+
+ config = faacDecGetCurrentConfiguration(decoder);
+ if (!config) DECODE_ERROR();
+
+ buffervalid = fread(buffer, 1, BUFFER_SIZE, infile);
+ bufferconsumed = faacDecInit(decoder, buffer, &samplerate, &channels);
+
+ output_opened = aac_ip.output->open_audio(FMT_S16_LE, samplerate, channels);
+ if (!output_opened)
+ DECODE_ERROR();
+
+#if USE_SEEKING
+ aac_ip.set_info(construct_title(filename, id3tag), (seek_table_length-1)*1000, bitrate, samplerate, channels);
+#else
+ aac_ip.set_info(construct_title(filename, id3tag), -1, bitrate, samplerate, channels);
+#endif
+
+ while (playing && buffervalid > 0)
+ {+ /* handle seeking */
+ if (seek_pos != -1)
+ {+ if (seek_pos > seek_table_length) seek_pos = seek_table_length;
+ if (seek_pos < 0) seek_pos = 0;
+
+ if (fseek(infile, seek_table[seek_pos], SEEK_SET) == -1)
+ DECODE_ERROR();
+ bufferconsumed = 0;
+ buffervalid = fread(buffer, 1, BUFFER_SIZE, infile);
+
+ aac_ip.output->flush(seek_pos*1000);
+ seek_pos = -1;
+ }
+
+ if (bufferconsumed > 0)
+ {+ memmove(buffer, &buffer[bufferconsumed], buffervalid-bufferconsumed);
+ buffervalid -= bufferconsumed;
+ buffervalid += fread(&buffer[buffervalid], 1, BUFFER_SIZE-buffervalid, infile);
+ }
+ sample_buffer = faacDecDecode(decoder, &finfo, buffer);
+ bytesdecoded = finfo.bytesconsumed;
+ samplesdecoded = finfo.samples;
+ result = finfo.error;
+
+ if (sample_buffer == NULL)
+ {+ buffervalid = 0;
+ printf("aac-XMMS: %s\n", faacDecGetErrorMessage(result));+ }
+
+ bufferconsumed = bytesdecoded;
+
+ if (sample_buffer && (samplesdecoded > 0))
+ {+ while (playing && aac_ip.output->buffer_free() < (samplesdecoded << 1))
+ {+ if (seek_pos != -1)
+ break;
+ else
+ xmms_usleep(10000);
+ }
+
+ if (seek_pos == -1)
+ {+ aac_ip.add_vis_pcm(aac_ip.output->written_time(), FMT_S16_LE, channels, samplesdecoded << 1, sample_buffer);
+ aac_ip.output->write_audio(sample_buffer, samplesdecoded << 1);
+ }
+ }
+ }
+
+ if (output_opened)
+ {+ while (playing && aac_ip.output->buffer_playing()) {+ xmms_usleep(10000);
+ }
+ aac_ip.output->flush(0);
+ aac_ip.output->close_audio();
+ output_opened = FALSE;
+ }
+
+ if (decoder) faacDecClose(decoder);
+ if (infile) fclose(infile);
+ if (id3tag) ID3Tag_Delete(id3tag);
+
+ g_free(seek_table);
+ g_free(id3buffer);
+ g_free(buffer);
+
+ playing = FALSE;
+ seek_pos = -1;
+
+ pthread_exit(NULL);
+}
+
+static void aac_play_file(char *filename)
+{+ playing = TRUE;
+ pthread_create(&decode_thread, NULL, aac_decode_loop, g_strdup(filename));
+}
+
+static void aac_stop(void)
+{+ playing = FALSE;
+ pthread_join(decode_thread, NULL);
+}
+
+static void aac_pause(short paused)
+{+ if (output_opened)
+ aac_ip.output->pause(paused);
+}
+
+static void aac_seek(int time)
+{+ seek_pos = time;
+ while (playing && seek_pos != -1) xmms_usleep(10000);
+}
+
+static int aac_get_time(void)
+{+ if (!playing)
+ return -1;
+ return aac_ip.output->output_time();
+}
+
+/*
+ * Construct a title string based on the given ID3 tag, or from the filename
+ * if the tag is unavailable. This does not take into account different
+ * encodings other than ASCII.
+ *
+ */
+static gchar *construct_title(char *filename, ID3Tag *id3tag)
+{+ TitleInput *input = NULL;
+ ID3Frame *id3frame = NULL;
+ ID3Field *id3field = NULL;
+ gchar *ext = NULL;
+ gchar *title = NULL;
+ gchar *tmp = NULL;
+
+ XMMS_NEW_TITLEINPUT(input);
+
+ ext = strrchr(filename, '.');
+ if (ext) ext++;
+
+ input->file_name = g_basename(filename);
+ input->file_ext = ext;
+ input->file_path = filename;
+
+ if (id3tag)
+ {+ /* performer */
+ id3frame = ID3Tag_FindFrameWithID(id3tag, ID3FID_LEADARTIST);
+ if (id3frame)
+ {+ id3field = ID3Frame_GetField(id3frame, ID3FN_TEXT);
+ if (id3field)
+ {+ input->performer = g_malloc0((ID3Field_Size(id3field)+1));
+ ID3Field_GetASCII(id3field, input->performer, ID3Field_Size(id3field));
+ id3field = NULL;
+ }
+ id3frame = NULL;
+ }
+
+ /* album name */
+ id3frame = ID3Tag_FindFrameWithID(id3tag, ID3FID_ALBUM);
+ if (id3frame)
+ {+ id3field = ID3Frame_GetField(id3frame, ID3FN_TEXT);
+ if (id3field)
+ {+ input->album_name = g_malloc0(ID3Field_Size(id3field)+1);
+ ID3Field_GetASCII(id3field, input->album_name, ID3Field_Size(id3field));
+ id3field = NULL;
+ }
+ id3frame = NULL;
+ }
+
+ /* track name */
+ id3frame = ID3Tag_FindFrameWithID(id3tag, ID3FID_TITLE);
+ if (id3frame)
+ {+ id3field = ID3Frame_GetField(id3frame, ID3FN_TEXT);
+ if (id3field)
+ {+ input->track_name = g_malloc0((ID3Field_Size(id3field)+1));
+ ID3Field_GetASCII(id3field, input->track_name, ID3Field_Size(id3field));
+ id3field = NULL;
+ }
+ id3frame = NULL;
+ }
+
+ /* track number */
+ id3frame = ID3Tag_FindFrameWithID(id3tag, ID3FID_TRACKNUM);
+ if (id3frame)
+ {+ id3field = ID3Frame_GetField(id3frame, ID3FN_TEXT);
+ if (id3field)
+ {+ /* The track number MAY be extended with a '/'
+ * followed by a numeric string, eg. "4/9".
+ * In this case, take only the first number
+ */
+ tmp = g_malloc0(ID3Field_Size(id3field)+1);
+ ID3Field_GetASCII(id3field, tmp, ID3Field_Size(id3field));
+ input->track_number = atoi(tmp);
+ g_free(tmp);
+ id3field = NULL;
+ }
+ id3frame = NULL;
+ }
+
+ /* year */
+ id3frame = ID3Tag_FindFrameWithID(id3tag, ID3FID_YEAR);
+ if (id3frame)
+ {+ id3field = ID3Frame_GetField(id3frame, ID3FN_TEXT);
+ if (id3field)
+ {+ tmp = g_malloc0(ID3Field_Size(id3field)+1);
+ ID3Field_GetASCII(id3field, tmp, ID3Field_Size(id3field));
+ input->year = atoi(tmp);
+ g_free(tmp);
+ id3field = NULL;
+ }
+ id3frame = NULL;
+ }
+
+ /* date */
+ id3frame = ID3Tag_FindFrameWithID(id3tag, ID3FID_DATE);
+ if (id3frame)
+ {+ id3field = ID3Frame_GetField(id3frame, ID3FN_TEXT);
+ if (id3field)
+ {+ input->date = g_malloc0(ID3Field_Size(id3field)+1);
+ ID3Field_GetASCII(id3field, input->date, ID3Field_Size(id3field));
+ id3field = NULL;
+ }
+ id3frame = NULL;
+ }
+
+ /* genre */
+ /* XXX Genre handling is known to be broken.
+ * It does not take into account id3v1 genre listings
+ */
+ id3frame = ID3Tag_FindFrameWithID(id3tag, ID3FID_CONTENTTYPE);
+ if (id3frame)
+ {+ id3field = ID3Frame_GetField(id3frame, ID3FN_TEXT);
+ if (id3field)
+ {+ input->genre = g_malloc0(ID3Field_Size(id3field)+1);
+ ID3Field_GetASCII(id3field, input->genre, ID3Field_Size(id3field));
+ id3field = NULL;
+ }
+ id3frame = NULL;
+ }
+
+ /* comment */
+ id3frame = ID3Tag_FindFrameWithID(id3tag, ID3FID_COMMENT);
+ if (id3frame)
+ {+ id3field = ID3Frame_GetField(id3frame, ID3FN_TEXT);
+ if (id3field)
+ {+ input->comment = g_malloc0(ID3Field_Size(id3field)+1);
+ ID3Field_GetASCII(id3field, input->comment, ID3Field_Size(id3field));
+ id3field = NULL;
+ }
+ id3frame = NULL;
+ }
+ }
+
+ title = xmms_get_titlestring(xmms_get_gentitle_format(), input);
+
+ g_free(input->performer);
+ g_free(input->album_name);
+ g_free(input->track_name);
+ g_free(input->date);
+ g_free(input->genre);
+ g_free(input->comment);
+ g_free(input);
+
+ return title;
+}
+
+static void aac_get_song_info(char *filename, char **title, int *length)
+{+ ID3Tag *id3tag = NULL;
+ ID3Frame *id3frame = NULL;
+ ID3Field *id3field = NULL;
+ unsigned char header[ID3_TAGHEADERSIZE];
+ unsigned char *buffer = NULL;
+ unsigned long *seek_table = NULL;
+ unsigned long seconds, bitrate;
+ FILE *infile = NULL;
+ int buffersize;
+
+ (*length) = -1;
+
+ infile = fopen(filename, "rb");
+ if (!infile)
+ return;
+
+ memset(header, 0, ID3_TAGHEADERSIZE);
+ fread(header, 1, ID3_TAGHEADERSIZE, infile);
+
+ /* check for a valid ID3 header */
+ if ((buffersize = _ID3_IsTagHeader(header)) != -1)
+ {+ buffer = g_malloc0(buffersize);
+ if (fread(buffer, 1, buffersize, infile) != buffersize)
+ {+ g_free(buffer);
+ fclose(infile);
+ return;
+ }
+ id3tag = ID3Tag_New();
+ ID3Tag_Parse(id3tag, header, buffer);
+
+ id3frame = ID3Tag_FindFrameWithID(id3tag, ID3FID_SONGLEN);
+ if (!id3frame)
+ {+ id3field = ID3Frame_GetField(id3frame, ID3FN_TEXT);
+ if (id3field)
+ {+ buffer = g_malloc0(ID3Field_Size(id3field)+1);
+ ID3Field_GetASCII(id3field, buffer, ID3Field_Size(id3field));
+ (*length) = atoi(buffer);
+ g_free(buffer);
+ }
+
+ }
+
+ }
+
+ (*title) = construct_title(filename, id3tag);
+
+#if USE_SEEKING
+ get_AAC_info(infile, &bitrate, &seek_table, &seconds);
+ (*length) = (seconds-1)*1000;
+#endif
+
+ if (id3tag) ID3Tag_Delete(id3tag);
+ if (infile) fclose(infile);
+
+ g_free(seek_table);
+ g_free(buffer);
+}
+
+static void aac_cleanup(void)
+{+ if (aac_ip.description)
+ g_free(aac_ip.description);
+}
+
+#define ADTS_HEADER_SIZE 8
+#define SEEK_TABLE_CHUNK 60
+
+static int sample_rates[] = { 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000 };+
+/* Modeled after the FAAD winamp plugin */
+
+static void get_AAC_info(FILE *infile, unsigned long *bitrate, unsigned long **seek_table, unsigned long *seek_table_length)
+{+ unsigned long orig_pos, pos;
+ unsigned char header[ADTS_HEADER_SIZE];
+ unsigned int framecount, framelength, t_framelength = 0, framesinsec = 0;
+
+ unsigned long *tmp_seek_table = NULL;
+ unsigned long *tmp_realloc = NULL;
+ unsigned long tmp_seek_table_length;
+ unsigned long seconds = 0;
+
+ float frames_per_sec;
+
+ int id;
+ int sample_rate_index;
+
+ orig_pos = ftell(infile);
+
+ (*bitrate) = -1;
+ (*seek_table) = NULL;
+ (*seek_table_length) = -1;
+
+ tmp_seek_table = g_malloc0(SEEK_TABLE_CHUNK * sizeof(unsigned long));
+ tmp_seek_table_length = SEEK_TABLE_CHUNK;
+
+ for (framecount = 0;; framecount++, framesinsec++)
+ {+ pos = ftell(infile);
+ if (fread(header, 1, ADTS_HEADER_SIZE, infile) != ADTS_HEADER_SIZE)
+ break;
+
+ /* check syncword */
+ if (!((header[0] == 0xff) && ((header[1] & 0xf6) == 0xf0)))
+ break;
+
+ if (!framecount)
+ {+ /* read the fixed ADTS header only once */
+ id = header[1] & 0x08;
+ sample_rate_index = (header[2] & 0x3c) >> 2;
+ frames_per_sec = sample_rates[sample_rate_index] / 1024.0f;
+ }
+
+ if (id == 0)
+ {+ /* MPEG-4 */
+ framelength = ((unsigned int)header[4] << 5) | ((unsigned int)header[5] >> 3);
+ }
+ else
+ {+ /* MPEG-2 */
+ framelength = (((unsigned int)header[3] & 0x3) << 11) | ((unsigned int)header[4] << 3) | (header[5] >> 5);
+ }
+ t_framelength += framelength;
+
+ if (framesinsec == 43)
+ {+ framesinsec = 0;
+ }
+
+ if (framesinsec == 0)
+ {+ if (seconds == tmp_seek_table_length)
+ {+ tmp_seek_table = realloc(tmp_seek_table, (seconds + SEEK_TABLE_CHUNK)*sizeof(unsigned long));
+ tmp_seek_table_length = seconds + SEEK_TABLE_CHUNK;
+ }
+ tmp_seek_table[seconds] = pos;
+ seconds++;
+ }
+
+ if (fseek(infile, framelength - ADTS_HEADER_SIZE, SEEK_CUR) == -1)
+ break;
+ }
+
+ if (seconds)
+ {+ (*seek_table) = g_malloc0(seconds*sizeof(unsigned long));
+ memcpy((*seek_table), tmp_seek_table, seconds*sizeof(unsigned long));
+ (*seek_table_length) = seconds;
+
+// Bitrate calculation here is unreliable, and variable, so setting it here
+// doesn't help us any
+
+// (*bitrate) = (unsigned long)(((t_framelength / framecount)*(sample_rates[sample_rate_index]/1024.0))+0.5)*8;
+ }
+
+ g_free(tmp_seek_table);
+ fseek(infile, orig_pos, SEEK_SET);
+}
+