forked from len0rd/rockbox
6579818b43
Also some duplicate code was replaced by a function call. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13508 a1c6a512-1295-4272-9138-f99709370657
2384 lines
65 KiB
C
2384 lines
65 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2005 Dave Chapman
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <inttypes.h>
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#include "errno.h"
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#include "metadata.h"
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#include "mp3_playback.h"
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#include "logf.h"
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#include "rbunicode.h"
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#include "atoi.h"
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#include "replaygain.h"
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#include "debug.h"
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#include "system.h"
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#include "cuesheet.h"
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#include "structec.h"
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enum tagtype { TAGTYPE_APE = 1, TAGTYPE_VORBIS };
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#ifdef ROCKBOX_BIG_ENDIAN
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#define IS_BIG_ENDIAN 1
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#else
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#define IS_BIG_ENDIAN 0
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#endif
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#define APETAG_HEADER_LENGTH 32
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#define APETAG_HEADER_FORMAT "8llll8"
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#define APETAG_ITEM_HEADER_FORMAT "ll"
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#define APETAG_ITEM_TYPE_MASK 3
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#define TAG_NAME_LENGTH 32
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#define TAG_VALUE_LENGTH 128
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#define MP4_ID(a, b, c, d) (((a) << 24) | ((b) << 16) | ((c) << 8) | (d))
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#define MP4_3gp6 MP4_ID('3', 'g', 'p', '6')
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#define MP4_alac MP4_ID('a', 'l', 'a', 'c')
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#define MP4_calb MP4_ID(0xa9, 'a', 'l', 'b')
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#define MP4_cART MP4_ID(0xa9, 'A', 'R', 'T')
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#define MP4_cnam MP4_ID(0xa9, 'n', 'a', 'm')
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#define MP4_cwrt MP4_ID(0xa9, 'w', 'r', 't')
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#define MP4_esds MP4_ID('e', 's', 'd', 's')
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#define MP4_ftyp MP4_ID('f', 't', 'y', 'p')
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#define MP4_gnre MP4_ID('g', 'n', 'r', 'e')
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#define MP4_hdlr MP4_ID('h', 'd', 'l', 'r')
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#define MP4_ilst MP4_ID('i', 'l', 's', 't')
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#define MP4_M4A MP4_ID('M', '4', 'A', ' ')
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#define MP4_M4B MP4_ID('M', '4', 'B', ' ')
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#define MP4_mdat MP4_ID('m', 'd', 'a', 't')
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#define MP4_mdia MP4_ID('m', 'd', 'i', 'a')
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#define MP4_mdir MP4_ID('m', 'd', 'i', 'r')
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#define MP4_meta MP4_ID('m', 'e', 't', 'a')
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#define MP4_minf MP4_ID('m', 'i', 'n', 'f')
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#define MP4_moov MP4_ID('m', 'o', 'o', 'v')
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#define MP4_mp4a MP4_ID('m', 'p', '4', 'a')
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#define MP4_mp42 MP4_ID('m', 'p', '4', '2')
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#define MP4_qt MP4_ID('q', 't', ' ', ' ')
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#define MP4_soun MP4_ID('s', 'o', 'u', 'n')
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#define MP4_stbl MP4_ID('s', 't', 'b', 'l')
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#define MP4_stsd MP4_ID('s', 't', 's', 'd')
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#define MP4_stts MP4_ID('s', 't', 't', 's')
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#define MP4_trak MP4_ID('t', 'r', 'a', 'k')
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#define MP4_trkn MP4_ID('t', 'r', 'k', 'n')
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#define MP4_udta MP4_ID('u', 'd', 't', 'a')
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#define MP4_extra MP4_ID('-', '-', '-', '-')
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struct apetag_header
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{
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char id[8];
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long version;
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long length;
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long item_count;
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long flags;
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char reserved[8];
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};
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struct apetag_item_header
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{
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long length;
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long flags;
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};
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#if CONFIG_CODEC == SWCODEC
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static const unsigned short a52_bitrates[] =
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{
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32, 40, 48, 56, 64, 80, 96, 112, 128, 160,
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192, 224, 256, 320, 384, 448, 512, 576, 640
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};
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/* Only store frame sizes for 44.1KHz - others are simply multiples
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of the bitrate */
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static const unsigned short a52_441framesizes[] =
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{
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69 * 2, 70 * 2, 87 * 2, 88 * 2, 104 * 2, 105 * 2, 121 * 2,
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122 * 2, 139 * 2, 140 * 2, 174 * 2, 175 * 2, 208 * 2, 209 * 2,
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243 * 2, 244 * 2, 278 * 2, 279 * 2, 348 * 2, 349 * 2, 417 * 2,
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418 * 2, 487 * 2, 488 * 2, 557 * 2, 558 * 2, 696 * 2, 697 * 2,
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835 * 2, 836 * 2, 975 * 2, 976 * 2, 1114 * 2, 1115 * 2, 1253 * 2,
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1254 * 2, 1393 * 2, 1394 * 2
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};
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static const long wavpack_sample_rates [] =
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{
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6000, 8000, 9600, 11025, 12000, 16000, 22050, 24000,
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32000, 44100, 48000, 64000, 88200, 96000, 192000
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};
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/* Read a string from the file. Read up to size bytes, or, if eos != -1,
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* until the eos character is found (eos is not stored in buf, unless it is
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* nil). Writes up to buf_size chars to buf, always terminating with a nil.
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* Returns number of chars read or -1 on read error.
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*/
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static long read_string(int fd, char* buf, long buf_size, int eos, long size)
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{
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long read_bytes = 0;
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char c;
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while (size != 0)
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{
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if (read(fd, &c, 1) != 1)
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{
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read_bytes = -1;
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break;
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}
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read_bytes++;
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size--;
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if ((eos != -1) && (eos == (unsigned char) c))
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{
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break;
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}
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if (buf_size > 1)
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{
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*buf++ = c;
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buf_size--;
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}
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}
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*buf = 0;
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return read_bytes;
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}
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/* Read an unsigned 32-bit integer from a big-endian file. */
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#ifdef ROCKBOX_BIG_ENDIAN
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#define read_uint32be(fd,buf) read((fd), (buf), 4)
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#else
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static int read_uint32be(int fd, unsigned int* buf)
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{
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size_t n;
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n = read(fd, (char*) buf, 4);
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*buf = betoh32(*buf);
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return n;
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}
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#endif
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/* Read an unaligned 32-bit little endian long from buffer. */
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static unsigned long get_long_le(void* buf)
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{
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unsigned char* p = (unsigned char*) buf;
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return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
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}
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/* Read an unaligned 32-bit big endian long from buffer. */
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static unsigned long get_long_be(void* buf)
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{
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unsigned char* p = (unsigned char*) buf;
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return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
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}
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/* Read an unaligned 32-bit little endian long from buffer. */
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static long get_slong(void* buf)
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{
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unsigned char* p = (unsigned char*) buf;
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return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
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}
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/* Parse the tag (the name-value pair) and fill id3 and buffer accordingly.
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* String values to keep are written to buf. Returns number of bytes written
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* to buf (including end nil).
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*/
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static long parse_tag(const char* name, char* value, struct mp3entry* id3,
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char* buf, long buf_remaining, enum tagtype type)
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{
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long len = 0;
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char** p;
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if ((((strcasecmp(name, "track") == 0) && (type == TAGTYPE_APE)))
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|| ((strcasecmp(name, "tracknumber") == 0) && (type == TAGTYPE_VORBIS)))
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{
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id3->tracknum = atoi(value);
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p = &(id3->track_string);
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}
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else if (((strcasecmp(name, "year") == 0) && (type == TAGTYPE_APE))
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|| ((strcasecmp(name, "date") == 0) && (type == TAGTYPE_VORBIS)))
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{
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/* Date's can be in any format in Vorbis. However most of them
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* are in ISO8601 format so if we try and parse the first part
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* of the tag as a number, we should get the year. If we get crap,
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* then act like we never parsed it.
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*/
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id3->year = atoi(value);
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if (id3->year < 1900)
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{ /* yeah, not likely */
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id3->year = 0;
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}
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p = &(id3->year_string);
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}
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else if (strcasecmp(name, "title") == 0)
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{
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p = &(id3->title);
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}
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else if (strcasecmp(name, "artist") == 0)
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{
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p = &(id3->artist);
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}
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else if (strcasecmp(name, "album") == 0)
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{
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p = &(id3->album);
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}
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else if (strcasecmp(name, "genre") == 0)
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{
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p = &(id3->genre_string);
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}
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else if (strcasecmp(name, "composer") == 0)
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{
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p = &(id3->composer);
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}
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else if (strcasecmp(name, "comment") == 0)
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{
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p = &(id3->comment);
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}
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else if (strcasecmp(name, "albumartist") == 0)
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{
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p = &(id3->albumartist);
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}
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else if (strcasecmp(name, "album artist") == 0)
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{
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p = &(id3->albumartist);
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}
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else if (strcasecmp(name, "ensemble") == 0)
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{
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p = &(id3->albumartist);
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}
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else
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{
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len = parse_replaygain(name, value, id3, buf, buf_remaining);
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p = NULL;
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}
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if (p)
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{
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len = strlen(value);
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len = MIN(len, buf_remaining - 1);
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if (len > 0)
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{
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strncpy(buf, value, len);
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buf[len] = 0;
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*p = buf;
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len++;
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}
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else
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{
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len = 0;
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}
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}
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return len;
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}
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/* Read the items in an APEV2 tag. Only looks for a tag at the end of a
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* file. Returns true if a tag was found and fully read, false otherwise.
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*/
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static bool read_ape_tags(int fd, struct mp3entry* id3)
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{
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struct apetag_header header;
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if ((lseek(fd, -APETAG_HEADER_LENGTH, SEEK_END) < 0)
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|| (ecread(fd, &header, 1, APETAG_HEADER_FORMAT, IS_BIG_ENDIAN) != APETAG_HEADER_LENGTH)
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|| (memcmp(header.id, "APETAGEX", sizeof(header.id))))
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{
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return false;
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}
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if ((header.version == 2000) && (header.item_count > 0)
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&& (header.length > APETAG_HEADER_LENGTH))
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{
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char *buf = id3->id3v2buf;
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unsigned int buf_remaining = sizeof(id3->id3v2buf)
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+ sizeof(id3->id3v1buf);
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unsigned int tag_remaining = header.length - APETAG_HEADER_LENGTH;
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int i;
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if (lseek(fd, -header.length, SEEK_END) < 0)
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{
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return false;
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}
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for (i = 0; i < header.item_count; i++)
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{
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struct apetag_item_header item;
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char name[TAG_NAME_LENGTH];
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char value[TAG_VALUE_LENGTH];
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long r;
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if (tag_remaining < sizeof(item))
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{
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break;
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}
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if (ecread(fd, &item, 1, APETAG_ITEM_HEADER_FORMAT, IS_BIG_ENDIAN) < (long) sizeof(item))
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{
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return false;
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}
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tag_remaining -= sizeof(item);
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r = read_string(fd, name, sizeof(name), 0, tag_remaining);
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if (r == -1)
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{
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return false;
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}
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tag_remaining -= r + item.length;
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|
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if ((item.flags & APETAG_ITEM_TYPE_MASK) == 0)
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{
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long len;
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|
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if (read_string(fd, value, sizeof(value), -1, item.length)
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!= item.length)
|
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{
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return false;
|
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}
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len = parse_tag(name, value, id3, buf, buf_remaining,
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TAGTYPE_APE);
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buf += len;
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buf_remaining -= len;
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}
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else
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{
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if (lseek(fd, item.length, SEEK_CUR) < 0)
|
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{
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return false;
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}
|
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}
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}
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}
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|
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return true;
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}
|
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|
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/* Read the items in a Vorbis comment packet. Returns true the items were
|
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* fully read, false otherwise.
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*/
|
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static bool read_vorbis_tags(int fd, struct mp3entry *id3,
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long tag_remaining)
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{
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char *buf = id3->id3v2buf;
|
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int32_t comment_count;
|
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int32_t len;
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int buf_remaining = sizeof(id3->id3v2buf) + sizeof(id3->id3v1buf);
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int i;
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|
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if (ecread(fd, &len, 1, "l", IS_BIG_ENDIAN) < (long) sizeof(len))
|
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{
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return false;
|
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}
|
|
|
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if ((lseek(fd, len, SEEK_CUR) < 0)
|
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|| (ecread(fd, &comment_count, 1, "l", IS_BIG_ENDIAN)
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< (long) sizeof(comment_count)))
|
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{
|
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return false;
|
|
}
|
|
|
|
tag_remaining -= len + sizeof(len) + sizeof(comment_count);
|
|
|
|
if (tag_remaining <= 0)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
for (i = 0; i < comment_count; i++)
|
|
{
|
|
char name[TAG_NAME_LENGTH];
|
|
char value[TAG_VALUE_LENGTH];
|
|
int32_t read_len;
|
|
|
|
if (tag_remaining < 4)
|
|
{
|
|
break;
|
|
}
|
|
|
|
if (ecread(fd, &len, 1, "l", IS_BIG_ENDIAN) < (long) sizeof(len))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
tag_remaining -= 4;
|
|
|
|
/* Quit if we've passed the end of the page */
|
|
if (tag_remaining < len)
|
|
{
|
|
break;
|
|
}
|
|
|
|
tag_remaining -= len;
|
|
read_len = read_string(fd, name, sizeof(name), '=', len);
|
|
|
|
if (read_len < 0)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
len -= read_len;
|
|
|
|
if (read_string(fd, value, sizeof(value), -1, len) < 0)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
len = parse_tag(name, value, id3, buf, buf_remaining,
|
|
TAGTYPE_VORBIS);
|
|
buf += len;
|
|
buf_remaining -= len;
|
|
}
|
|
|
|
/* Skip to the end of the block */
|
|
if (tag_remaining)
|
|
{
|
|
if (lseek(fd, tag_remaining, SEEK_CUR) < 0)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/* Skip an ID3v2 tag if it can be found. We assume the tag is located at the
|
|
* start of the file, which should be true in all cases where we need to skip it.
|
|
* Returns true if successfully skipped or not skipped, and false if
|
|
* something went wrong while skipping.
|
|
*/
|
|
static bool skip_id3v2(int fd, struct mp3entry *id3)
|
|
{
|
|
char buf[4];
|
|
|
|
read(fd, buf, 4);
|
|
if (memcmp(buf, "ID3", 3) == 0)
|
|
{
|
|
/* We have found an ID3v2 tag at the start of the file - find its
|
|
length and then skip it. */
|
|
if ((id3->first_frame_offset = getid3v2len(fd)) == 0)
|
|
return false;
|
|
|
|
if ((lseek(fd, id3->first_frame_offset, SEEK_SET) < 0))
|
|
return false;
|
|
|
|
return true;
|
|
} else {
|
|
lseek(fd, 0, SEEK_SET);
|
|
id3->first_frame_offset = 0;
|
|
return true;
|
|
}
|
|
}
|
|
|
|
/* A simple parser to read vital metadata from an Ogg Speex file. Returns
|
|
* false if metadata needed by the Speex codec couldn't be read.
|
|
*/
|
|
|
|
static bool get_speex_metadata(int fd, struct mp3entry* id3)
|
|
{
|
|
/* An Ogg File is split into pages, each starting with the string
|
|
* "OggS". Each page has a timestamp (in PCM samples) referred to as
|
|
* the "granule position".
|
|
*
|
|
* An Ogg Speex has the following structure:
|
|
* 1) Identification header (containing samplerate, numchannels, etc)
|
|
Described in this page: (http://www.speex.org/manual2/node7.html)
|
|
* 2) Comment header - containing the Vorbis Comments
|
|
* 3) Many audio packets...
|
|
*/
|
|
|
|
/* Use the path name of the id3 structure as a temporary buffer. */
|
|
unsigned char* buf = (unsigned char*)id3->path;
|
|
long comment_size;
|
|
long remaining = 0;
|
|
long last_serial = 0;
|
|
long serial, r;
|
|
int segments;
|
|
int i;
|
|
bool eof = false;
|
|
|
|
if ((lseek(fd, 0, SEEK_SET) < 0) || (read(fd, buf, 58) < 33))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if ((memcmp(buf, "OggS", 4) != 0) || (memcmp(&buf[28], "Speex", 5) != 0))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/* We need to ensure the serial number from this page is the same as the
|
|
* one from the last page (since we only support a single bitstream).
|
|
*/
|
|
serial = get_long_le(&buf[14]);
|
|
if ((lseek(fd, 33, SEEK_SET) < 0)||(read(fd, buf, 58) < 4))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
id3->frequency = get_slong(&buf[31]);
|
|
last_serial = get_long_le(&buf[27]);/*temporary, header size*/
|
|
id3->bitrate = get_long_le(&buf[47]);
|
|
id3->vbr = get_long_le(&buf[55]);
|
|
id3->filesize = filesize(fd);
|
|
/* Comments are in second Ogg page */
|
|
if (lseek(fd, 28+last_serial/*(temporary for header size)*/, SEEK_SET) < 0)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/* Minimum header length for Ogg pages is 27. */
|
|
if (read(fd, buf, 27) < 27)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (memcmp(buf, "OggS", 4) !=0 )
|
|
{
|
|
return false;
|
|
}
|
|
|
|
segments = buf[26];
|
|
/* read in segment table */
|
|
if (read(fd, buf, segments) < segments)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/* The second packet in a vorbis stream is the comment packet. It *may*
|
|
* extend beyond the second page, but usually does not. Here we find the
|
|
* length of the comment packet (or the rest of the page if the comment
|
|
* packet extends to the third page).
|
|
*/
|
|
for (i = 0; i < segments; i++)
|
|
{
|
|
remaining += buf[i];
|
|
/* The last segment of a packet is always < 255 bytes */
|
|
if (buf[i] < 255)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
comment_size = remaining;
|
|
|
|
/* Failure to read the tags isn't fatal. */
|
|
read_vorbis_tags(fd, id3, remaining);
|
|
|
|
/* We now need to search for the last page in the file - identified by
|
|
* by ('O','g','g','S',0) and retrieve totalsamples.
|
|
*/
|
|
|
|
/* A page is always < 64 kB */
|
|
if (lseek(fd, -(MIN(64 * 1024, id3->filesize)), SEEK_END) < 0)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
remaining = 0;
|
|
|
|
while (!eof)
|
|
{
|
|
r = read(fd, &buf[remaining], MAX_PATH - remaining);
|
|
|
|
if (r <= 0)
|
|
{
|
|
eof = true;
|
|
}
|
|
else
|
|
{
|
|
remaining += r;
|
|
}
|
|
|
|
/* Inefficient (but simple) search */
|
|
i = 0;
|
|
|
|
while (i < (remaining - 3))
|
|
{
|
|
if ((buf[i] == 'O') && (memcmp(&buf[i], "OggS", 4) == 0))
|
|
{
|
|
if (i < (remaining - 17))
|
|
{
|
|
/* Note that this only reads the low 32 bits of a
|
|
* 64 bit value.
|
|
*/
|
|
id3->samples = get_long_le(&buf[i + 6]);
|
|
last_serial = get_long_le(&buf[i + 14]);
|
|
|
|
/* If this page is very small the beginning of the next
|
|
* header could be in buffer. Jump near end of this header
|
|
* and continue */
|
|
i += 27;
|
|
}
|
|
else
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
i++;
|
|
}
|
|
}
|
|
|
|
if (i < remaining)
|
|
{
|
|
/* Move the remaining bytes to start of buffer.
|
|
* Reuse var 'segments' as it is no longer needed */
|
|
segments = 0;
|
|
while (i < remaining)
|
|
{
|
|
buf[segments++] = buf[i++];
|
|
}
|
|
remaining = segments;
|
|
}
|
|
else
|
|
{
|
|
/* Discard the rest of the buffer */
|
|
remaining = 0;
|
|
}
|
|
}
|
|
|
|
/* This file has mutiple vorbis bitstreams (or is corrupt). */
|
|
/* FIXME we should display an error here. */
|
|
if (serial != last_serial)
|
|
{
|
|
logf("serialno mismatch");
|
|
logf("%ld", serial);
|
|
logf("%ld", last_serial);
|
|
return false;
|
|
}
|
|
|
|
id3->length = (id3->samples / id3->frequency) * 1000;
|
|
id3->bitrate = (((int64_t) id3->filesize - comment_size) * 8) / id3->length;
|
|
return true;
|
|
}
|
|
|
|
|
|
/* A simple parser to read vital metadata from an Ogg Vorbis file.
|
|
* Calls get_speex_metadata if a speex file is identified. Returns
|
|
* false if metadata needed by the Vorbis codec couldn't be read.
|
|
*/
|
|
static bool get_vorbis_metadata(int fd, struct mp3entry* id3)
|
|
{
|
|
/* An Ogg File is split into pages, each starting with the string
|
|
* "OggS". Each page has a timestamp (in PCM samples) referred to as
|
|
* the "granule position".
|
|
*
|
|
* An Ogg Vorbis has the following structure:
|
|
* 1) Identification header (containing samplerate, numchannels, etc)
|
|
* 2) Comment header - containing the Vorbis Comments
|
|
* 3) Setup header - containing codec setup information
|
|
* 4) Many audio packets...
|
|
*/
|
|
|
|
/* Use the path name of the id3 structure as a temporary buffer. */
|
|
unsigned char* buf = (unsigned char *)id3->path;
|
|
long comment_size;
|
|
long remaining = 0;
|
|
long last_serial = 0;
|
|
long serial, r;
|
|
int segments;
|
|
int i;
|
|
bool eof = false;
|
|
|
|
if ((lseek(fd, 0, SEEK_SET) < 0) || (read(fd, buf, 58) < 4))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if ((memcmp(buf, "OggS", 4) != 0) || (memcmp(&buf[29], "vorbis", 6) != 0))
|
|
{
|
|
if ((memcmp(buf, "OggS", 4) != 0) || (memcmp(&buf[28], "Speex", 5) != 0))
|
|
{
|
|
return false;
|
|
}
|
|
else
|
|
{
|
|
id3->codectype = AFMT_SPEEX;
|
|
return get_speex_metadata(fd, id3);
|
|
}
|
|
}
|
|
|
|
/* We need to ensure the serial number from this page is the same as the
|
|
* one from the last page (since we only support a single bitstream).
|
|
*/
|
|
serial = get_long_le(&buf[14]);
|
|
id3->frequency = get_long_le(&buf[40]);
|
|
id3->filesize = filesize(fd);
|
|
|
|
/* Comments are in second Ogg page */
|
|
if (lseek(fd, 58, SEEK_SET) < 0)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/* Minimum header length for Ogg pages is 27. */
|
|
if (read(fd, buf, 27) < 27)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (memcmp(buf, "OggS", 4) !=0 )
|
|
{
|
|
return false;
|
|
}
|
|
|
|
segments = buf[26];
|
|
|
|
/* read in segment table */
|
|
if (read(fd, buf, segments) < segments)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/* The second packet in a vorbis stream is the comment packet. It *may*
|
|
* extend beyond the second page, but usually does not. Here we find the
|
|
* length of the comment packet (or the rest of the page if the comment
|
|
* packet extends to the third page).
|
|
*/
|
|
for (i = 0; i < segments; i++)
|
|
{
|
|
remaining += buf[i];
|
|
|
|
/* The last segment of a packet is always < 255 bytes */
|
|
if (buf[i] < 255)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Now read in packet header (type and id string) */
|
|
if (read(fd, buf, 7) < 7)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
comment_size = remaining;
|
|
remaining -= 7;
|
|
|
|
/* The first byte of a packet is the packet type; comment packets are
|
|
* type 3.
|
|
*/
|
|
if ((buf[0] != 3) || (memcmp(buf + 1, "vorbis", 6) !=0))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/* Failure to read the tags isn't fatal. */
|
|
read_vorbis_tags(fd, id3, remaining);
|
|
|
|
/* We now need to search for the last page in the file - identified by
|
|
* by ('O','g','g','S',0) and retrieve totalsamples.
|
|
*/
|
|
|
|
/* A page is always < 64 kB */
|
|
if (lseek(fd, -(MIN(64 * 1024, id3->filesize)), SEEK_END) < 0)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
remaining = 0;
|
|
|
|
while (!eof)
|
|
{
|
|
r = read(fd, &buf[remaining], MAX_PATH - remaining);
|
|
|
|
if (r <= 0)
|
|
{
|
|
eof = true;
|
|
}
|
|
else
|
|
{
|
|
remaining += r;
|
|
}
|
|
|
|
/* Inefficient (but simple) search */
|
|
i = 0;
|
|
|
|
while (i < (remaining - 3))
|
|
{
|
|
if ((buf[i] == 'O') && (memcmp(&buf[i], "OggS", 4) == 0))
|
|
{
|
|
if (i < (remaining - 17))
|
|
{
|
|
/* Note that this only reads the low 32 bits of a
|
|
* 64 bit value.
|
|
*/
|
|
id3->samples = get_long_le(&buf[i + 6]);
|
|
last_serial = get_long_le(&buf[i + 14]);
|
|
|
|
/* If this page is very small the beginning of the next
|
|
* header could be in buffer. Jump near end of this header
|
|
* and continue */
|
|
i += 27;
|
|
}
|
|
else
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
i++;
|
|
}
|
|
}
|
|
|
|
if (i < remaining)
|
|
{
|
|
/* Move the remaining bytes to start of buffer.
|
|
* Reuse var 'segments' as it is no longer needed */
|
|
segments = 0;
|
|
while (i < remaining)
|
|
{
|
|
buf[segments++] = buf[i++];
|
|
}
|
|
remaining = segments;
|
|
}
|
|
else
|
|
{
|
|
/* Discard the rest of the buffer */
|
|
remaining = 0;
|
|
}
|
|
}
|
|
|
|
/* This file has mutiple vorbis bitstreams (or is corrupt). */
|
|
/* FIXME we should display an error here. */
|
|
if (serial != last_serial)
|
|
{
|
|
logf("serialno mismatch");
|
|
logf("%ld", serial);
|
|
logf("%ld", last_serial);
|
|
return false;
|
|
}
|
|
|
|
id3->length = ((int64_t) id3->samples * 1000) / id3->frequency;
|
|
|
|
if (id3->length <= 0)
|
|
{
|
|
logf("ogg length invalid!");
|
|
return false;
|
|
}
|
|
|
|
id3->bitrate = (((int64_t) id3->filesize - comment_size) * 8) / id3->length;
|
|
id3->vbr = true;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool get_flac_metadata(int fd, struct mp3entry* id3)
|
|
{
|
|
/* A simple parser to read vital metadata from a FLAC file - length,
|
|
* frequency, bitrate etc. This code should either be moved to a
|
|
* seperate file, or discarded in favour of the libFLAC code.
|
|
* The FLAC stream specification can be found at
|
|
* http://flac.sourceforge.net/format.html#stream
|
|
*/
|
|
|
|
/* Use the trackname part of the id3 structure as a temporary buffer */
|
|
unsigned char* buf = (unsigned char *)id3->path;
|
|
bool rc = false;
|
|
|
|
if (!skip_id3v2(fd, id3) || (read(fd, buf, 4) < 4))
|
|
{
|
|
return rc;
|
|
}
|
|
|
|
if (memcmp(buf, "fLaC", 4) != 0)
|
|
{
|
|
return rc;
|
|
}
|
|
|
|
while (true)
|
|
{
|
|
long i;
|
|
|
|
if (read(fd, buf, 4) < 0)
|
|
{
|
|
return rc;
|
|
}
|
|
|
|
/* The length of the block */
|
|
i = (buf[1] << 16) | (buf[2] << 8) | buf[3];
|
|
|
|
if ((buf[0] & 0x7f) == 0) /* 0 is the STREAMINFO block */
|
|
{
|
|
unsigned long totalsamples;
|
|
|
|
/* FIXME: Don't trust the value of i */
|
|
if (read(fd, buf, i) < 0)
|
|
{
|
|
return rc;
|
|
}
|
|
|
|
id3->vbr = true; /* All FLAC files are VBR */
|
|
id3->filesize = filesize(fd);
|
|
id3->frequency = (buf[10] << 12) | (buf[11] << 4)
|
|
| ((buf[12] & 0xf0) >> 4);
|
|
rc = true; /* Got vital metadata */
|
|
|
|
/* totalsamples is a 36-bit field, but we assume <= 32 bits are used */
|
|
totalsamples = get_long_be(&buf[14]);
|
|
|
|
/* Calculate track length (in ms) and estimate the bitrate (in kbit/s) */
|
|
id3->length = ((int64_t) totalsamples * 1000) / id3->frequency;
|
|
|
|
if (id3->length <= 0)
|
|
{
|
|
logf("flac length invalid!");
|
|
return false;
|
|
}
|
|
|
|
id3->bitrate = (id3->filesize * 8) / id3->length;
|
|
}
|
|
else if ((buf[0] & 0x7f) == 4) /* 4 is the VORBIS_COMMENT block */
|
|
{
|
|
/* The next i bytes of the file contain the VORBIS COMMENTS. */
|
|
if (!read_vorbis_tags(fd, id3, i))
|
|
{
|
|
return rc;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (buf[0] & 0x80)
|
|
{
|
|
/* If we have reached the last metadata block, abort. */
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
/* Skip to next metadata block */
|
|
if (lseek(fd, i, SEEK_CUR) < 0)
|
|
{
|
|
return rc;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool get_wave_metadata(int fd, struct mp3entry* id3)
|
|
{
|
|
/* Use the trackname part of the id3 structure as a temporary buffer */
|
|
unsigned char* buf = (unsigned char *)id3->path;
|
|
unsigned long totalsamples = 0;
|
|
unsigned long channels = 0;
|
|
unsigned long bitspersample = 0;
|
|
unsigned long numbytes = 0;
|
|
int read_bytes;
|
|
int i;
|
|
|
|
/* get RIFF chunk header */
|
|
if ((lseek(fd, 0, SEEK_SET) < 0)
|
|
|| ((read_bytes = read(fd, buf, 12)) < 12))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if ((memcmp(buf, "RIFF",4) != 0)
|
|
|| (memcmp(&buf[8], "WAVE", 4) !=0 ))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/* iterate over WAVE chunks until 'data' chunk */
|
|
while (true)
|
|
{
|
|
/* get chunk header */
|
|
if ((read_bytes = read(fd, buf, 8)) < 8)
|
|
return false;
|
|
|
|
/* chunkSize */
|
|
i = get_long_le(&buf[4]);
|
|
|
|
if (memcmp(buf, "fmt ", 4) == 0)
|
|
{
|
|
/* get rest of chunk */
|
|
if ((read_bytes = read(fd, buf, 16)) < 16)
|
|
return false;
|
|
|
|
i -= 16;
|
|
|
|
/* skipping wFormatTag */
|
|
/* wChannels */
|
|
channels = buf[2] | (buf[3] << 8);
|
|
/* dwSamplesPerSec */
|
|
id3->frequency = get_long_le(&buf[4]);
|
|
/* dwAvgBytesPerSec */
|
|
id3->bitrate = (get_long_le(&buf[8]) * 8) / 1000;
|
|
/* skipping wBlockAlign */
|
|
/* wBitsPerSample */
|
|
bitspersample = buf[14] | (buf[15] << 8);
|
|
}
|
|
else if (memcmp(buf, "data", 4) == 0)
|
|
{
|
|
numbytes = i;
|
|
break;
|
|
}
|
|
else if (memcmp(buf, "fact", 4) == 0)
|
|
{
|
|
/* dwSampleLength */
|
|
if (i >= 4)
|
|
{
|
|
/* get rest of chunk */
|
|
if ((read_bytes = read(fd, buf, 2)) < 2)
|
|
return false;
|
|
|
|
i -= 2;
|
|
totalsamples = get_long_le(buf);
|
|
}
|
|
}
|
|
|
|
/* seek to next chunk (even chunk sizes must be padded) */
|
|
if (i & 0x01)
|
|
i++;
|
|
|
|
if(lseek(fd, i, SEEK_CUR) < 0)
|
|
return false;
|
|
}
|
|
|
|
if ((numbytes == 0) || (channels == 0))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (totalsamples == 0)
|
|
{
|
|
/* for PCM only */
|
|
totalsamples = numbytes
|
|
/ ((((bitspersample - 1) / 8) + 1) * channels);
|
|
}
|
|
|
|
id3->vbr = false; /* All WAV files are CBR */
|
|
id3->filesize = filesize(fd);
|
|
|
|
/* Calculate track length (in ms) and estimate the bitrate (in kbit/s) */
|
|
id3->length = ((int64_t) totalsamples * 1000) / id3->frequency;
|
|
|
|
return true;
|
|
}
|
|
|
|
/* Read the tag data from an MP4 file, storing up to buffer_size bytes in
|
|
* buffer.
|
|
*/
|
|
static unsigned long read_mp4_tag(int fd, unsigned int size_left, char* buffer,
|
|
unsigned int buffer_left)
|
|
{
|
|
unsigned int bytes_read = 0;
|
|
|
|
if (buffer_left == 0)
|
|
{
|
|
lseek(fd, size_left, SEEK_CUR); /* Skip everything */
|
|
}
|
|
else
|
|
{
|
|
/* Skip the data tag header - maybe we should parse it properly? */
|
|
lseek(fd, 16, SEEK_CUR);
|
|
size_left -= 16;
|
|
|
|
if (size_left > buffer_left)
|
|
{
|
|
read(fd, buffer, buffer_left);
|
|
lseek(fd, size_left - buffer_left, SEEK_CUR);
|
|
bytes_read = buffer_left;
|
|
}
|
|
else
|
|
{
|
|
read(fd, buffer, size_left);
|
|
bytes_read = size_left;
|
|
}
|
|
}
|
|
|
|
return bytes_read;
|
|
}
|
|
|
|
/* Read a string tag from an MP4 file */
|
|
static unsigned int read_mp4_tag_string(int fd, int size_left, char** buffer,
|
|
unsigned int* buffer_left, char** dest)
|
|
{
|
|
unsigned int bytes_read = read_mp4_tag(fd, size_left, *buffer,
|
|
*buffer_left - 1);
|
|
unsigned int length = 0;
|
|
|
|
if (bytes_read)
|
|
{
|
|
(*buffer)[bytes_read] = 0;
|
|
*dest = *buffer;
|
|
length = strlen(*buffer) + 1;
|
|
*buffer_left -= length;
|
|
*buffer += length;
|
|
}
|
|
else
|
|
{
|
|
*dest = NULL;
|
|
}
|
|
|
|
return length;
|
|
}
|
|
|
|
static unsigned int read_mp4_atom(int fd, unsigned int* size,
|
|
unsigned int* type, unsigned int size_left)
|
|
{
|
|
read_uint32be(fd, size);
|
|
read_uint32be(fd, type);
|
|
|
|
if (*size == 1)
|
|
{
|
|
/* FAT32 doesn't support files this big, so something seems to
|
|
* be wrong. (64-bit sizes should only be used when required.)
|
|
*/
|
|
errno = EFBIG;
|
|
*type = 0;
|
|
return 0;
|
|
}
|
|
|
|
if (*size > 0)
|
|
{
|
|
if (*size > size_left)
|
|
{
|
|
size_left = 0;
|
|
}
|
|
else
|
|
{
|
|
size_left -= *size;
|
|
}
|
|
|
|
*size -= 8;
|
|
}
|
|
else
|
|
{
|
|
*size = size_left;
|
|
size_left = 0;
|
|
}
|
|
|
|
return size_left;
|
|
}
|
|
|
|
static unsigned int read_mp4_length(int fd, unsigned int* size)
|
|
{
|
|
unsigned int length = 0;
|
|
int bytes = 0;
|
|
unsigned char c;
|
|
|
|
do
|
|
{
|
|
read(fd, &c, 1);
|
|
bytes++;
|
|
(*size)--;
|
|
length = (length << 7) | (c & 0x7F);
|
|
}
|
|
while ((c & 0x80) && (bytes < 4) && (*size > 0));
|
|
|
|
return length;
|
|
}
|
|
|
|
static bool read_mp4_esds(int fd, struct mp3entry* id3,
|
|
unsigned int* size)
|
|
{
|
|
unsigned char buf[8];
|
|
bool sbr = false;
|
|
|
|
lseek(fd, 4, SEEK_CUR); /* Version and flags. */
|
|
read(fd, buf, 1); /* Verify ES_DescrTag. */
|
|
*size -= 5;
|
|
|
|
if (*buf == 3)
|
|
{
|
|
/* read length */
|
|
if (read_mp4_length(fd, size) < 20)
|
|
{
|
|
return sbr;
|
|
}
|
|
|
|
lseek(fd, 3, SEEK_CUR);
|
|
*size -= 3;
|
|
}
|
|
else
|
|
{
|
|
lseek(fd, 2, SEEK_CUR);
|
|
*size -= 2;
|
|
}
|
|
|
|
read(fd, buf, 1); /* Verify DecoderConfigDescrTab. */
|
|
*size -= 1;
|
|
|
|
if (*buf != 4)
|
|
{
|
|
return sbr;
|
|
}
|
|
|
|
if (read_mp4_length(fd, size) < 13)
|
|
{
|
|
return sbr;
|
|
}
|
|
|
|
lseek(fd, 13, SEEK_CUR); /* Skip audio type, bit rates, etc. */
|
|
read(fd, buf, 1);
|
|
*size -= 14;
|
|
|
|
if (*buf != 5) /* Verify DecSpecificInfoTag. */
|
|
{
|
|
return sbr;
|
|
}
|
|
|
|
{
|
|
static const int sample_rates[] =
|
|
{
|
|
96000, 88200, 64000, 48000, 44100, 32000,
|
|
24000, 22050, 16000, 12000, 11025, 8000
|
|
};
|
|
unsigned long bits;
|
|
unsigned int length;
|
|
unsigned int index;
|
|
unsigned int type;
|
|
|
|
/* Read the (leading part of the) decoder config. */
|
|
length = read_mp4_length(fd, size);
|
|
length = MIN(length, *size);
|
|
length = MIN(length, sizeof(buf));
|
|
memset(buf, 0, sizeof(buf));
|
|
read(fd, buf, length);
|
|
*size -= length;
|
|
|
|
/* Maybe time to write a simple read_bits function... */
|
|
|
|
/* Decoder config format:
|
|
* Object type - 5 bits
|
|
* Frequency index - 4 bits
|
|
* Channel configuration - 4 bits
|
|
*/
|
|
bits = get_long_be(buf);
|
|
type = bits >> 27; /* Object type - 5 bits */
|
|
index = (bits >> 23) & 0xf; /* Frequency index - 4 bits */
|
|
|
|
if (index < (sizeof(sample_rates) / sizeof(*sample_rates)))
|
|
{
|
|
id3->frequency = sample_rates[index];
|
|
}
|
|
|
|
if (type == 5)
|
|
{
|
|
DEBUGF("MP4: SBR\n");
|
|
unsigned int old_index = index;
|
|
|
|
sbr = true;
|
|
index = (bits >> 15) & 0xf; /* Frequency index - 4 bits */
|
|
|
|
if (index == 15)
|
|
{
|
|
/* 17 bits read so far... */
|
|
bits = get_long_be(&buf[2]);
|
|
id3->frequency = (bits >> 7) & 0x00ffffff;
|
|
}
|
|
else if (index < (sizeof(sample_rates) / sizeof(*sample_rates)))
|
|
{
|
|
id3->frequency = sample_rates[index];
|
|
}
|
|
|
|
if (old_index == index)
|
|
{
|
|
/* Downsampled SBR */
|
|
id3->frequency *= 2;
|
|
}
|
|
}
|
|
/* Skip 13 bits from above, plus 3 bits, then read 11 bits */
|
|
else if ((length >= 4) && (((bits >> 5) & 0x7ff) == 0x2b7))
|
|
{
|
|
/* extensionAudioObjectType */
|
|
DEBUGF("MP4: extensionAudioType\n");
|
|
type = bits & 0x1f; /* Object type - 5 bits*/
|
|
bits = get_long_be(&buf[4]);
|
|
|
|
if (type == 5)
|
|
{
|
|
sbr = bits >> 31;
|
|
|
|
if (sbr)
|
|
{
|
|
unsigned int old_index = index;
|
|
|
|
/* 1 bit read so far */
|
|
index = (bits >> 27) & 0xf; /* Frequency index - 4 bits */
|
|
|
|
if (index == 15)
|
|
{
|
|
/* 5 bits read so far */
|
|
id3->frequency = (bits >> 3) & 0x00ffffff;
|
|
}
|
|
else if (index < (sizeof(sample_rates) / sizeof(*sample_rates)))
|
|
{
|
|
id3->frequency = sample_rates[index];
|
|
}
|
|
|
|
if (old_index == index)
|
|
{
|
|
/* Downsampled SBR */
|
|
id3->frequency *= 2;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!sbr && (id3->frequency <= 24000) && (length <= 2))
|
|
{
|
|
/* Double the frequency for low-frequency files without a "long"
|
|
* DecSpecificConfig header. The file may or may not contain SBR,
|
|
* but here we guess it does if the header is short. This can
|
|
* fail on some files, but it's the best we can do, short of
|
|
* decoding (parts of) the file.
|
|
*/
|
|
id3->frequency *= 2;
|
|
}
|
|
}
|
|
|
|
return sbr;
|
|
}
|
|
|
|
static bool read_mp4_tags(int fd, struct mp3entry* id3,
|
|
unsigned int size_left)
|
|
{
|
|
unsigned int size;
|
|
unsigned int type;
|
|
unsigned int buffer_left = sizeof(id3->id3v2buf) + sizeof(id3->id3v1buf);
|
|
char* buffer = id3->id3v2buf;
|
|
bool cwrt = false;
|
|
|
|
do
|
|
{
|
|
size_left = read_mp4_atom(fd, &size, &type, size_left);
|
|
|
|
/* DEBUGF("Tag atom: '%c%c%c%c' (%d bytes left)\n", type >> 24 & 0xff,
|
|
type >> 16 & 0xff, type >> 8 & 0xff, type & 0xff, size); */
|
|
|
|
switch (type)
|
|
{
|
|
case MP4_cnam:
|
|
read_mp4_tag_string(fd, size, &buffer, &buffer_left,
|
|
&id3->title);
|
|
break;
|
|
|
|
case MP4_cART:
|
|
read_mp4_tag_string(fd, size, &buffer, &buffer_left,
|
|
&id3->artist);
|
|
break;
|
|
|
|
case MP4_calb:
|
|
read_mp4_tag_string(fd, size, &buffer, &buffer_left,
|
|
&id3->album);
|
|
break;
|
|
|
|
case MP4_cwrt:
|
|
read_mp4_tag_string(fd, size, &buffer, &buffer_left,
|
|
&id3->composer);
|
|
cwrt = false;
|
|
break;
|
|
|
|
case MP4_gnre:
|
|
{
|
|
unsigned short genre;
|
|
|
|
read_mp4_tag(fd, size, (char*) &genre, sizeof(genre));
|
|
id3->genre_string = id3_get_num_genre(betoh16(genre) - 1);
|
|
}
|
|
break;
|
|
|
|
case MP4_trkn:
|
|
{
|
|
unsigned short n[2];
|
|
|
|
read_mp4_tag(fd, size, (char*) &n, sizeof(n));
|
|
id3->tracknum = betoh16(n[1]);
|
|
}
|
|
break;
|
|
|
|
case MP4_extra:
|
|
{
|
|
char tag_name[TAG_NAME_LENGTH];
|
|
unsigned int sub_size;
|
|
|
|
/* "mean" atom */
|
|
read_uint32be(fd, &sub_size);
|
|
size -= sub_size;
|
|
lseek(fd, sub_size - 4, SEEK_CUR);
|
|
/* "name" atom */
|
|
read_uint32be(fd, &sub_size);
|
|
size -= sub_size;
|
|
lseek(fd, 8, SEEK_CUR);
|
|
sub_size -= 12;
|
|
|
|
if (sub_size > sizeof(tag_name) - 1)
|
|
{
|
|
read(fd, tag_name, sizeof(tag_name) - 1);
|
|
lseek(fd, sub_size - sizeof(tag_name) - 1, SEEK_CUR);
|
|
tag_name[sizeof(tag_name) - 1] = 0;
|
|
}
|
|
else
|
|
{
|
|
read(fd, tag_name, sub_size);
|
|
tag_name[sub_size] = 0;
|
|
}
|
|
|
|
if ((strcasecmp(tag_name, "composer") == 0) && !cwrt)
|
|
{
|
|
read_mp4_tag_string(fd, size, &buffer, &buffer_left,
|
|
&id3->composer);
|
|
}
|
|
else
|
|
{
|
|
char* any;
|
|
unsigned int length = read_mp4_tag_string(fd, size,
|
|
&buffer, &buffer_left, &any);
|
|
|
|
if (length > 0)
|
|
{
|
|
/* Re-use the read buffer as the dest buffer... */
|
|
buffer -= length;
|
|
buffer_left += length;
|
|
|
|
if (parse_replaygain(tag_name, buffer, id3,
|
|
buffer, buffer_left) > 0)
|
|
{
|
|
/* Data used, keep it. */
|
|
buffer += length;
|
|
buffer_left -= length;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
lseek(fd, size, SEEK_CUR);
|
|
break;
|
|
}
|
|
}
|
|
while ((size_left > 0) && (errno == 0));
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool read_mp4_container(int fd, struct mp3entry* id3,
|
|
unsigned int size_left)
|
|
{
|
|
unsigned int size;
|
|
unsigned int type;
|
|
unsigned int handler = 0;
|
|
bool rc = true;
|
|
|
|
do
|
|
{
|
|
size_left = read_mp4_atom(fd, &size, &type, size_left);
|
|
|
|
/* DEBUGF("Atom: '%c%c%c%c' (0x%08x, %d bytes left)\n",
|
|
(type >> 24) & 0xff, (type >> 16) & 0xff, (type >> 8) & 0xff,
|
|
type & 0xff, type, size); */
|
|
|
|
switch (type)
|
|
{
|
|
case MP4_ftyp:
|
|
{
|
|
unsigned int id;
|
|
|
|
read_uint32be(fd, &id);
|
|
size -= 4;
|
|
|
|
if ((id != MP4_M4A) && (id != MP4_M4B) && (id != MP4_mp42)
|
|
&& (id != MP4_qt) && (id != MP4_3gp6))
|
|
{
|
|
DEBUGF("Unknown MP4 file type: '%c%c%c%c'\n",
|
|
id >> 24 & 0xff, id >> 16 & 0xff, id >> 8 & 0xff,
|
|
id & 0xff);
|
|
return false;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case MP4_meta:
|
|
lseek(fd, 4, SEEK_CUR); /* Skip version */
|
|
size -= 4;
|
|
/* Fall through */
|
|
|
|
case MP4_moov:
|
|
case MP4_udta:
|
|
case MP4_mdia:
|
|
case MP4_stbl:
|
|
case MP4_trak:
|
|
rc = read_mp4_container(fd, id3, size);
|
|
size = 0;
|
|
break;
|
|
|
|
case MP4_ilst:
|
|
if (handler == MP4_mdir)
|
|
{
|
|
rc = read_mp4_tags(fd, id3, size);
|
|
size = 0;
|
|
}
|
|
break;
|
|
|
|
case MP4_minf:
|
|
if (handler == MP4_soun)
|
|
{
|
|
rc = read_mp4_container(fd, id3, size);
|
|
size = 0;
|
|
}
|
|
break;
|
|
|
|
case MP4_stsd:
|
|
lseek(fd, 8, SEEK_CUR);
|
|
size -= 8;
|
|
rc = read_mp4_container(fd, id3, size);
|
|
size = 0;
|
|
break;
|
|
|
|
case MP4_hdlr:
|
|
lseek(fd, 8, SEEK_CUR);
|
|
read_uint32be(fd, &handler);
|
|
size -= 12;
|
|
/* DEBUGF(" Handler '%c%c%c%c'\n", handler >> 24 & 0xff,
|
|
handler >> 16 & 0xff, handler >> 8 & 0xff,handler & 0xff); */
|
|
break;
|
|
|
|
case MP4_stts:
|
|
{
|
|
unsigned int entries;
|
|
unsigned int i;
|
|
|
|
lseek(fd, 4, SEEK_CUR);
|
|
read_uint32be(fd, &entries);
|
|
id3->samples = 0;
|
|
|
|
for (i = 0; i < entries; i++)
|
|
{
|
|
unsigned int n;
|
|
unsigned int l;
|
|
|
|
read_uint32be(fd, &n);
|
|
read_uint32be(fd, &l);
|
|
id3->samples += n * l;
|
|
}
|
|
|
|
size = 0;
|
|
}
|
|
break;
|
|
|
|
case MP4_mp4a:
|
|
case MP4_alac:
|
|
{
|
|
unsigned int frequency;
|
|
|
|
id3->codectype = (type == MP4_mp4a) ? AFMT_AAC : AFMT_ALAC;
|
|
lseek(fd, 22, SEEK_CUR);
|
|
read_uint32be(fd, &frequency);
|
|
size -= 26;
|
|
id3->frequency = frequency;
|
|
|
|
if (type == MP4_mp4a)
|
|
{
|
|
unsigned int subsize;
|
|
unsigned int subtype;
|
|
|
|
/* Get frequency from the decoder info tag, if possible. */
|
|
lseek(fd, 2, SEEK_CUR);
|
|
/* The esds atom is a part of the mp4a atom, so ignore
|
|
* the returned size (it's already accounted for).
|
|
*/
|
|
read_mp4_atom(fd, &subsize, &subtype, size);
|
|
size -= 10;
|
|
|
|
if (subtype == MP4_esds)
|
|
{
|
|
read_mp4_esds(fd, id3, &size);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case MP4_mdat:
|
|
id3->filesize = size;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
lseek(fd, size, SEEK_CUR);
|
|
}
|
|
while (rc && (size_left > 0) && (errno == 0) && (id3->filesize == 0));
|
|
/* Break on non-zero filesize, since Rockbox currently doesn't support
|
|
* metadata after the mdat atom (which sets the filesize field).
|
|
*/
|
|
|
|
return rc;
|
|
}
|
|
|
|
static bool get_mp4_metadata(int fd, struct mp3entry* id3)
|
|
{
|
|
id3->codectype = AFMT_UNKNOWN;
|
|
id3->filesize = 0;
|
|
errno = 0;
|
|
|
|
if (read_mp4_container(fd, id3, filesize(fd)) && (errno == 0)
|
|
&& (id3->samples > 0) && (id3->frequency > 0)
|
|
&& (id3->filesize > 0))
|
|
{
|
|
if (id3->codectype == AFMT_UNKNOWN)
|
|
{
|
|
logf("Not an ALAC or AAC file");
|
|
return false;
|
|
}
|
|
|
|
id3->length = ((int64_t) id3->samples * 1000) / id3->frequency;
|
|
|
|
if (id3->length <= 0)
|
|
{
|
|
logf("mp4 length invalid!");
|
|
return false;
|
|
}
|
|
|
|
id3->bitrate = ((int64_t) id3->filesize * 8) / id3->length;
|
|
DEBUGF("MP4 bitrate %d, frequency %ld Hz, length %ld ms\n",
|
|
id3->bitrate, id3->frequency, id3->length);
|
|
}
|
|
else
|
|
{
|
|
logf("MP4 metadata error");
|
|
DEBUGF("MP4 metadata error. errno %d, length %ld, frequency %ld, filesize %ld\n",
|
|
errno, id3->length, id3->frequency, id3->filesize);
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool get_musepack_metadata(int fd, struct mp3entry *id3)
|
|
{
|
|
const int32_t sfreqs_sv7[4] = { 44100, 48000, 37800, 32000 };
|
|
uint32_t header[8];
|
|
uint64_t samples = 0;
|
|
int i;
|
|
|
|
if (!skip_id3v2(fd, id3))
|
|
return false;
|
|
if (read(fd, header, 4*8) != 4*8) return false;
|
|
/* Musepack files are little endian, might need swapping */
|
|
for (i = 1; i < 8; i++)
|
|
header[i] = letoh32(header[i]);
|
|
if (!memcmp(header, "MP+", 3)) { /* Compare to sig "MP+" */
|
|
unsigned int streamversion;
|
|
|
|
header[0] = letoh32(header[0]);
|
|
streamversion = (header[0] >> 24) & 15;
|
|
if (streamversion >= 8) {
|
|
return false; /* SV8 or higher don't exist yet, so no support */
|
|
} else if (streamversion == 7) {
|
|
unsigned int gapless = (header[5] >> 31) & 0x0001;
|
|
unsigned int last_frame_samples = (header[5] >> 20) & 0x07ff;
|
|
int track_gain, album_gain;
|
|
unsigned int bufused;
|
|
|
|
id3->frequency = sfreqs_sv7[(header[2] >> 16) & 0x0003];
|
|
samples = (uint64_t)header[1]*1152; /* 1152 is mpc frame size */
|
|
if (gapless)
|
|
samples -= 1152 - last_frame_samples;
|
|
else
|
|
samples -= 481; /* Musepack subband synth filter delay */
|
|
|
|
/* Extract ReplayGain data from header */
|
|
track_gain = (int16_t)((header[3] >> 16) & 0xffff);
|
|
id3->track_gain = get_replaygain_int(track_gain);
|
|
id3->track_peak = ((uint16_t)(header[3] & 0xffff)) << 9;
|
|
|
|
album_gain = (int16_t)((header[4] >> 16) & 0xffff);
|
|
id3->album_gain = get_replaygain_int(album_gain);
|
|
id3->album_peak = ((uint16_t)(header[4] & 0xffff)) << 9;
|
|
|
|
/* Write replaygain values to strings for use in id3 screen. We use
|
|
the XING header as buffer space since Musepack files shouldn't
|
|
need to use it in any other way */
|
|
id3->track_gain_string = (char *)id3->toc;
|
|
bufused = snprintf(id3->track_gain_string, 45,
|
|
"%d.%d dB", track_gain/100, abs(track_gain)%100);
|
|
id3->album_gain_string = (char *)id3->toc + bufused + 1;
|
|
bufused = snprintf(id3->album_gain_string, 45,
|
|
"%d.%d dB", album_gain/100, abs(album_gain)%100);
|
|
}
|
|
} else {
|
|
header[0] = letoh32(header[0]);
|
|
unsigned int streamversion = (header[0] >> 11) & 0x03FF;
|
|
if (streamversion != 4 && streamversion != 5 && streamversion != 6)
|
|
return false;
|
|
id3->frequency = 44100;
|
|
id3->track_gain = 0;
|
|
id3->track_peak = 0;
|
|
id3->album_gain = 0;
|
|
id3->album_peak = 0;
|
|
|
|
if (streamversion >= 5)
|
|
samples = (uint64_t)header[1]*1152; // 32 bit
|
|
else
|
|
samples = (uint64_t)(header[1] >> 16)*1152; // 16 bit
|
|
|
|
samples -= 576;
|
|
if (streamversion < 6)
|
|
samples -= 1152;
|
|
}
|
|
|
|
id3->vbr = true;
|
|
/* Estimate bitrate, we should probably subtract the various header sizes
|
|
here for super-accurate results */
|
|
id3->length = ((int64_t) samples * 1000) / id3->frequency;
|
|
|
|
if (id3->length <= 0)
|
|
{
|
|
logf("mpc length invalid!");
|
|
return false;
|
|
}
|
|
|
|
id3->filesize = filesize(fd);
|
|
id3->bitrate = id3->filesize * 8 / id3->length;
|
|
return true;
|
|
}
|
|
|
|
/* PSID metadata info is available here:
|
|
http://www.unusedino.de/ec64/technical/formats/sidplay.html */
|
|
static bool get_sid_metadata(int fd, struct mp3entry* id3)
|
|
{
|
|
/* Use the trackname part of the id3 structure as a temporary buffer */
|
|
unsigned char* buf = (unsigned char *)id3->path;
|
|
int read_bytes;
|
|
char *p;
|
|
|
|
|
|
if ((lseek(fd, 0, SEEK_SET) < 0)
|
|
|| ((read_bytes = read(fd, buf, 0x80)) < 0x80))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if ((memcmp(buf, "PSID",4) != 0))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
p = id3->id3v2buf;
|
|
|
|
/* Copy Title (assumed max 0x1f letters + 1 zero byte) */
|
|
id3->title = p;
|
|
buf[0x16+0x1f] = 0;
|
|
p = iso_decode(&buf[0x16], p, 0, strlen(&buf[0x16])+1);
|
|
|
|
/* Copy Artist (assumed max 0x1f letters + 1 zero byte) */
|
|
id3->artist = p;
|
|
buf[0x36+0x1f] = 0;
|
|
p = iso_decode(&buf[0x36], p, 0, strlen(&buf[0x36])+1);
|
|
|
|
/* Copy Year (assumed max 4 letters + 1 zero byte) */
|
|
buf[0x56+0x4] = 0;
|
|
id3->year = atoi(&buf[0x56]);
|
|
|
|
/* Copy Album (assumed max 0x1f-0x05 letters + 1 zero byte) */
|
|
id3->album = p;
|
|
buf[0x56+0x1f] = 0;
|
|
p = iso_decode(&buf[0x5b], p, 0, strlen(&buf[0x5b])+1);
|
|
|
|
id3->bitrate = 706;
|
|
id3->frequency = 44100;
|
|
/* New idea as posted by Marco Alanen (ravon):
|
|
* Set the songlength in seconds to the number of subsongs
|
|
* so every second represents a subsong.
|
|
* Users can then skip the current subsong by seeking
|
|
*
|
|
* Note: the number of songs is a 16bit value at 0xE, so this code only
|
|
* uses the lower 8 bits of the counter.
|
|
*/
|
|
id3->length = (buf[0xf]-1)*1000;
|
|
id3->vbr = false;
|
|
id3->filesize = filesize(fd);
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool get_adx_metadata(int fd, struct mp3entry* id3)
|
|
{
|
|
/* Use the trackname part of the id3 structure as a temporary buffer */
|
|
unsigned char * buf = (unsigned char *)id3->path;
|
|
int chanstart, channels, read_bytes;
|
|
int looping = 0, start_adr = 0, end_adr = 0;
|
|
|
|
/* try to get the basic header */
|
|
if ((lseek(fd, 0, SEEK_SET) < 0)
|
|
|| ((read_bytes = read(fd, buf, 0x38)) < 0x38))
|
|
{
|
|
DEBUGF("lseek or read failed\n");
|
|
return false;
|
|
}
|
|
|
|
/* ADX starts with 0x80 */
|
|
if (buf[0] != 0x80) {
|
|
DEBUGF("get_adx_metadata: wrong first byte %c\n",buf[0]);
|
|
return false;
|
|
}
|
|
|
|
/* check for a reasonable offset */
|
|
chanstart = ((buf[2] << 8) | buf[3]) + 4;
|
|
if (chanstart > 4096) {
|
|
DEBUGF("get_adx_metadata: bad chanstart %i\n", chanstart);
|
|
return false;
|
|
}
|
|
|
|
/* check for a workable number of channels */
|
|
channels = buf[7];
|
|
if (channels != 1 && channels != 2) {
|
|
DEBUGF("get_adx_metadata: bad channel count %i\n",channels);
|
|
return false;
|
|
}
|
|
|
|
id3->frequency = get_long_be(&buf[8]);
|
|
/* 32 samples per 18 bytes */
|
|
id3->bitrate = id3->frequency * channels * 18 * 8 / 32 / 1000;
|
|
id3->length = get_long_be(&buf[12]) / id3->frequency * 1000;
|
|
id3->vbr = false;
|
|
id3->filesize = filesize(fd);
|
|
|
|
/* get loop info */
|
|
if (!memcmp(buf+0x10,"\x01\xF4\x03\x00",4)) {
|
|
/* Soul Calibur 2 style (type 03) */
|
|
DEBUGF("get_adx_metadata: type 03 found\n");
|
|
/* check if header is too small for loop data */
|
|
if (chanstart-6 < 0x2c) looping=0;
|
|
else {
|
|
looping = get_long_be(&buf[0x18]);
|
|
end_adr = get_long_be(&buf[0x28]);
|
|
start_adr = get_long_be(&buf[0x1c])/32*channels*18+chanstart;
|
|
}
|
|
} else if (!memcmp(buf+0x10,"\x01\xF4\x04\x00",4)) {
|
|
/* Standard (type 04) */
|
|
DEBUGF("get_adx_metadata: type 04 found\n");
|
|
/* check if header is too small for loop data */
|
|
if (chanstart-6 < 0x38) looping=0;
|
|
else {
|
|
looping = get_long_be(&buf[0x24]);
|
|
end_adr = get_long_be(&buf[0x34]);
|
|
start_adr = get_long_be(&buf[0x28])/32*channels*18+chanstart;
|
|
}
|
|
} else {
|
|
DEBUGF("get_adx_metadata: error, couldn't determine ADX type\n");
|
|
return false;
|
|
}
|
|
|
|
if (looping) {
|
|
/* 2 loops, 10 second fade */
|
|
id3->length = (start_adr-chanstart + 2*(end_adr-start_adr))
|
|
*8 / id3->bitrate + 10000;
|
|
}
|
|
|
|
/* try to get the channel header */
|
|
if ((lseek(fd, chanstart-6, SEEK_SET) < 0)
|
|
|| ((read_bytes = read(fd, buf, 6)) < 6))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/* check channel header */
|
|
if (memcmp(buf, "(c)CRI", 6) != 0) return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool get_spc_metadata(int fd, struct mp3entry* id3)
|
|
{
|
|
/* Use the trackname part of the id3 structure as a temporary buffer */
|
|
unsigned char * buf = (unsigned char *)id3->path;
|
|
int read_bytes;
|
|
char * p;
|
|
|
|
unsigned long length;
|
|
unsigned long fade;
|
|
bool isbinary = true;
|
|
int i;
|
|
|
|
/* try to get the ID666 tag */
|
|
if ((lseek(fd, 0x2e, SEEK_SET) < 0)
|
|
|| ((read_bytes = read(fd, buf, 0xD2)) < 0xD2))
|
|
{
|
|
DEBUGF("lseek or read failed\n");
|
|
return false;
|
|
}
|
|
|
|
p = id3->id3v2buf;
|
|
|
|
id3->title = p;
|
|
buf[31] = 0;
|
|
p = iso_decode(buf, p, 0, 32);
|
|
buf += 32;
|
|
|
|
id3->album = p;
|
|
buf[31] = 0;
|
|
p = iso_decode(buf, p, 0, 32);
|
|
buf += 48;
|
|
|
|
id3->comment = p;
|
|
buf[31] = 0;
|
|
p = iso_decode(buf, p, 0, 32);
|
|
buf += 32;
|
|
|
|
/* Date check */
|
|
if(buf[2] == '/' && buf[5] == '/')
|
|
isbinary = false;
|
|
|
|
/* Reserved bytes check */
|
|
if(buf[0xD2 - 0x2E - 112] >= '0' &&
|
|
buf[0xD2 - 0x2E - 112] <= '9' &&
|
|
buf[0xD3 - 0x2E - 112] == 0x00)
|
|
isbinary = false;
|
|
|
|
/* is length & fade only digits? */
|
|
for (i=0;i<8 && (
|
|
(buf[0xA9 - 0x2E - 112+i]>='0'&&buf[0xA9 - 0x2E - 112+i]<='9') ||
|
|
buf[0xA9 - 0x2E - 112+i]=='\0');
|
|
i++);
|
|
if (i==8) isbinary = false;
|
|
|
|
if(isbinary) {
|
|
id3->year = buf[0] | (buf[1]<<8);
|
|
buf += 11;
|
|
|
|
length = (buf[0] | (buf[1]<<8) | (buf[2]<<16)) * 1000;
|
|
buf += 3;
|
|
|
|
fade = (buf[0] | (buf[1]<<8) | (buf[2]<<16) | (buf[3]<<24));
|
|
buf += 4;
|
|
} else {
|
|
char tbuf[6];
|
|
|
|
buf += 6;
|
|
buf[4] = 0;
|
|
id3->year = atoi(buf);
|
|
buf += 5;
|
|
|
|
memcpy(tbuf, buf, 3);
|
|
tbuf[3] = 0;
|
|
length = atoi(tbuf) * 1000;
|
|
buf += 3;
|
|
|
|
memcpy(tbuf, buf, 5);
|
|
tbuf[5] = 0;
|
|
fade = atoi(tbuf);
|
|
buf += 5;
|
|
}
|
|
|
|
id3->artist = p;
|
|
buf[31] = 0;
|
|
p = iso_decode(buf, p, 0, 32);
|
|
|
|
if (length==0) {
|
|
length=3*60*1000; /* 3 minutes */
|
|
fade=5*1000; /* 5 seconds */
|
|
}
|
|
|
|
id3->length = length+fade;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool get_aiff_metadata(int fd, struct mp3entry* id3)
|
|
{
|
|
/* Use the trackname part of the id3 structure as a temporary buffer */
|
|
unsigned char* buf = (unsigned char *)id3->path;
|
|
unsigned long numChannels = 0;
|
|
unsigned long numSampleFrames = 0;
|
|
unsigned long sampleSize = 0;
|
|
unsigned long sampleRate = 0;
|
|
unsigned long numbytes = 0;
|
|
int read_bytes;
|
|
int i;
|
|
|
|
if ((lseek(fd, 0, SEEK_SET) < 0)
|
|
|| ((read_bytes = read(fd, buf, sizeof(id3->path))) < 54))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if ((memcmp(buf, "FORM",4) != 0)
|
|
|| (memcmp(&buf[8], "AIFF", 4) !=0 ))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
buf += 12;
|
|
read_bytes -= 12;
|
|
|
|
while ((numbytes == 0) && (read_bytes >= 8))
|
|
{
|
|
/* chunkSize */
|
|
i = get_long_be(&buf[4]);
|
|
|
|
if (memcmp(buf, "COMM", 4) == 0)
|
|
{
|
|
/* numChannels */
|
|
numChannels = ((buf[8]<<8)|buf[9]);
|
|
/* numSampleFrames */
|
|
numSampleFrames = get_long_be(&buf[10]);
|
|
/* sampleSize */
|
|
sampleSize = ((buf[14]<<8)|buf[15]);
|
|
/* sampleRate */
|
|
sampleRate = get_long_be(&buf[18]);
|
|
sampleRate = sampleRate >> (16+14-buf[17]);
|
|
/* save format infos */
|
|
id3->bitrate = (sampleSize * numChannels * sampleRate) / 1000;
|
|
id3->frequency = sampleRate;
|
|
id3->length = ((int64_t) numSampleFrames * 1000) / id3->frequency;
|
|
|
|
id3->vbr = false; /* AIFF files are CBR */
|
|
id3->filesize = filesize(fd);
|
|
}
|
|
else if (memcmp(buf, "SSND", 4) == 0)
|
|
{
|
|
numbytes = i - 8;
|
|
}
|
|
|
|
if (i & 0x01)
|
|
{
|
|
i++; /* odd chunk sizes must be padded */
|
|
}
|
|
buf += i + 8;
|
|
read_bytes -= i + 8;
|
|
}
|
|
|
|
if ((numbytes == 0) || (numChannels == 0))
|
|
{
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
#endif /* CONFIG_CODEC == SWCODEC */
|
|
|
|
|
|
/* Simple file type probing by looking at the filename extension. */
|
|
unsigned int probe_file_format(const char *filename)
|
|
{
|
|
char *suffix;
|
|
unsigned int i;
|
|
|
|
suffix = strrchr(filename, '.');
|
|
|
|
if (suffix == NULL)
|
|
{
|
|
return AFMT_UNKNOWN;
|
|
}
|
|
|
|
/* skip '.' */
|
|
suffix++;
|
|
|
|
for (i = 1; i < AFMT_NUM_CODECS; i++)
|
|
{
|
|
/* search extension list for type */
|
|
const char *ext = audio_formats[i].ext_list;
|
|
|
|
do
|
|
{
|
|
if (strcasecmp(suffix, ext) == 0)
|
|
{
|
|
return i;
|
|
}
|
|
|
|
ext += strlen(ext) + 1;
|
|
}
|
|
while (*ext != '\0');
|
|
}
|
|
|
|
return AFMT_UNKNOWN;
|
|
}
|
|
|
|
/* Get metadata for track - return false if parsing showed problems with the
|
|
* file that would prevent playback.
|
|
*/
|
|
bool get_metadata(struct track_info* track, int fd, const char* trackname,
|
|
bool v1first)
|
|
{
|
|
#if CONFIG_CODEC == SWCODEC
|
|
unsigned char* buf;
|
|
unsigned long totalsamples;
|
|
int i;
|
|
#endif
|
|
|
|
/* Take our best guess at the codec type based on file extension */
|
|
track->id3.codectype = probe_file_format(trackname);
|
|
|
|
/* Load codec specific track tag information and confirm the codec type. */
|
|
switch (track->id3.codectype)
|
|
{
|
|
case AFMT_MPA_L1:
|
|
case AFMT_MPA_L2:
|
|
case AFMT_MPA_L3:
|
|
if (!get_mp3_metadata(fd, &track->id3, trackname, v1first))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
break;
|
|
|
|
#if CONFIG_CODEC == SWCODEC
|
|
case AFMT_FLAC:
|
|
if (!get_flac_metadata(fd, &(track->id3)))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
break;
|
|
|
|
case AFMT_MPC:
|
|
if (!get_musepack_metadata(fd, &(track->id3)))
|
|
return false;
|
|
read_ape_tags(fd, &(track->id3));
|
|
break;
|
|
|
|
case AFMT_OGG_VORBIS:
|
|
if (!get_vorbis_metadata(fd, &(track->id3)))/*detects and handles Ogg/Speex files*/
|
|
{
|
|
return false;
|
|
}
|
|
|
|
break;
|
|
|
|
case AFMT_SPEEX:
|
|
if (!get_speex_metadata(fd, &(track->id3)))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
break;
|
|
|
|
case AFMT_PCM_WAV:
|
|
if (!get_wave_metadata(fd, &(track->id3)))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
break;
|
|
|
|
case AFMT_WAVPACK:
|
|
/* A simple parser to read basic information from a WavPack file. This
|
|
* now works with self-extrating WavPack files. This no longer fails on
|
|
* WavPack files containing floating-point audio data because these are
|
|
* now converted to standard Rockbox format in the decoder.
|
|
*/
|
|
|
|
/* Use the trackname part of the id3 structure as a temporary buffer */
|
|
buf = (unsigned char *)track->id3.path;
|
|
|
|
for (i = 0; i < 256; ++i) {
|
|
|
|
/* at every 256 bytes into file, try to read a WavPack header */
|
|
|
|
if ((lseek(fd, i * 256, SEEK_SET) < 0) || (read(fd, buf, 32) < 32))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/* if valid WavPack 4 header version & not floating data, break */
|
|
|
|
if (memcmp (buf, "wvpk", 4) == 0 && buf [9] == 4 &&
|
|
(buf [8] >= 2 && buf [8] <= 0x10))
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (i == 256) {
|
|
logf ("%s is not a WavPack file\n", trackname);
|
|
return false;
|
|
}
|
|
|
|
track->id3.vbr = true; /* All WavPack files are VBR */
|
|
track->id3.filesize = filesize (fd);
|
|
|
|
if ((buf [20] | buf [21] | buf [22] | buf [23]) &&
|
|
(buf [12] & buf [13] & buf [14] & buf [15]) != 0xff)
|
|
{
|
|
int srindx = ((buf [26] >> 7) & 1) + ((buf [27] << 1) & 14);
|
|
|
|
if (srindx == 15)
|
|
{
|
|
track->id3.frequency = 44100;
|
|
}
|
|
else
|
|
{
|
|
track->id3.frequency = wavpack_sample_rates[srindx];
|
|
}
|
|
|
|
totalsamples = get_long_le(&buf[12]);
|
|
track->id3.length = totalsamples / (track->id3.frequency / 100) * 10;
|
|
track->id3.bitrate = filesize (fd) / (track->id3.length / 8);
|
|
}
|
|
|
|
read_ape_tags(fd, &track->id3); /* use any apetag info we find */
|
|
break;
|
|
|
|
case AFMT_A52:
|
|
/* Use the trackname part of the id3 structure as a temporary buffer */
|
|
buf = (unsigned char *)track->id3.path;
|
|
|
|
if ((lseek(fd, 0, SEEK_SET) < 0) || (read(fd, buf, 5) < 5))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if ((buf[0] != 0x0b) || (buf[1] != 0x77))
|
|
{
|
|
logf("%s is not an A52/AC3 file\n",trackname);
|
|
return false;
|
|
}
|
|
|
|
i = buf[4] & 0x3e;
|
|
|
|
if (i > 36)
|
|
{
|
|
logf("A52: Invalid frmsizecod: %d\n",i);
|
|
return false;
|
|
}
|
|
|
|
track->id3.bitrate = a52_bitrates[i >> 1];
|
|
track->id3.vbr = false;
|
|
track->id3.filesize = filesize(fd);
|
|
|
|
switch (buf[4] & 0xc0)
|
|
{
|
|
case 0x00:
|
|
track->id3.frequency = 48000;
|
|
track->id3.bytesperframe=track->id3.bitrate * 2 * 2;
|
|
break;
|
|
|
|
case 0x40:
|
|
track->id3.frequency = 44100;
|
|
track->id3.bytesperframe = a52_441framesizes[i];
|
|
break;
|
|
|
|
case 0x80:
|
|
track->id3.frequency = 32000;
|
|
track->id3.bytesperframe = track->id3.bitrate * 3 * 2;
|
|
break;
|
|
|
|
default:
|
|
logf("A52: Invalid samplerate code: 0x%02x\n", buf[4] & 0xc0);
|
|
return false;
|
|
break;
|
|
}
|
|
|
|
/* One A52 frame contains 6 blocks, each containing 256 samples */
|
|
totalsamples = track->id3.filesize / track->id3.bytesperframe * 6 * 256;
|
|
track->id3.length = totalsamples / track->id3.frequency * 1000;
|
|
break;
|
|
|
|
case AFMT_ALAC:
|
|
case AFMT_AAC:
|
|
if (!get_mp4_metadata(fd, &(track->id3)))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
break;
|
|
|
|
case AFMT_SHN:
|
|
track->id3.vbr = true;
|
|
track->id3.filesize = filesize(fd);
|
|
if (!skip_id3v2(fd, &(track->id3)))
|
|
{
|
|
return false;
|
|
}
|
|
/* TODO: read the id3v2 header if it exists */
|
|
break;
|
|
|
|
case AFMT_SID:
|
|
if (!get_sid_metadata(fd, &(track->id3)))
|
|
{
|
|
return false;
|
|
}
|
|
break;
|
|
case AFMT_SPC:
|
|
if(!get_spc_metadata(fd, &(track->id3)))
|
|
{
|
|
DEBUGF("get_spc_metadata error\n");
|
|
}
|
|
|
|
track->id3.filesize = filesize(fd);
|
|
track->id3.genre_string = id3_get_num_genre(36);
|
|
break;
|
|
case AFMT_ADX:
|
|
if (!get_adx_metadata(fd, &(track->id3)))
|
|
{
|
|
DEBUGF("get_adx_metadata error\n");
|
|
return false;
|
|
}
|
|
|
|
break;
|
|
case AFMT_NSF:
|
|
buf = (unsigned char *)track->id3.path;
|
|
if ((lseek(fd, 0, SEEK_SET) < 0) || ((read(fd, buf, 8)) < 8))
|
|
{
|
|
DEBUGF("lseek or read failed\n");
|
|
return false;
|
|
}
|
|
track->id3.vbr = false;
|
|
track->id3.filesize = filesize(fd);
|
|
if (memcmp(buf,"NESM",4) && memcmp(buf,"NSFE",4)) return false;
|
|
break;
|
|
|
|
case AFMT_AIFF:
|
|
if (!get_aiff_metadata(fd, &(track->id3)))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
break;
|
|
|
|
#endif /* CONFIG_CODEC == SWCODEC */
|
|
|
|
default:
|
|
/* If we don't know how to read the metadata, assume we can't play
|
|
the file */
|
|
return false;
|
|
break;
|
|
}
|
|
|
|
/* We have successfully read the metadata from the file */
|
|
|
|
#ifndef __PCTOOL__
|
|
if (cuesheet_is_enabled() && look_for_cuesheet_file(trackname, NULL))
|
|
{
|
|
track->id3.cuesheet_type = 1;
|
|
}
|
|
#endif
|
|
|
|
lseek(fd, 0, SEEK_SET);
|
|
strncpy(track->id3.path, trackname, sizeof(track->id3.path));
|
|
track->taginfo_ready = true;
|
|
|
|
return true;
|
|
}
|
|
|