357ffb3c46
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17369 a1c6a512-1295-4272-9138-f99709370657
780 lines
23 KiB
C
780 lines
23 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) 2002 by Daniel Stenberg
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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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/*
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* Parts of this code has been stolen from the Ample project and was written
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* by David Härdeman. It has since been extended and enhanced pretty much by
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* all sorts of friendly Rockbox people.
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*
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* A nice reference for MPEG header info:
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* http://rockbox.haxx.se/docs/mpeghdr.html
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdbool.h>
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#include <limits.h>
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#include "debug.h"
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#include "logf.h"
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#include "mp3data.h"
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#include "file.h"
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#include "buffer.h"
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// #define DEBUG_VERBOSE
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#define SYNC_MASK (0x7ffL << 21)
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#define VERSION_MASK (3L << 19)
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#define LAYER_MASK (3L << 17)
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#define PROTECTION_MASK (1L << 16)
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#define BITRATE_MASK (0xfL << 12)
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#define SAMPLERATE_MASK (3L << 10)
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#define PADDING_MASK (1L << 9)
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#define PRIVATE_MASK (1L << 8)
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#define CHANNELMODE_MASK (3L << 6)
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#define MODE_EXT_MASK (3L << 4)
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#define COPYRIGHT_MASK (1L << 3)
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#define ORIGINAL_MASK (1L << 2)
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#define EMPHASIS_MASK 3L
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/* MPEG Version table, sorted by version index */
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static const signed char version_table[4] = {
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MPEG_VERSION2_5, -1, MPEG_VERSION2, MPEG_VERSION1
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};
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/* Bitrate table for mpeg audio, indexed by row index and birate index */
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static const short bitrates[5][16] = {
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{0,32,64,96,128,160,192,224,256,288,320,352,384,416,448,0}, /* V1 L1 */
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{0,32,48,56, 64, 80, 96,112,128,160,192,224,256,320,384,0}, /* V1 L2 */
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{0,32,40,48, 56, 64, 80, 96,112,128,160,192,224,256,320,0}, /* V1 L3 */
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{0,32,48,56, 64, 80, 96,112,128,144,160,176,192,224,256,0}, /* V2 L1 */
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{0, 8,16,24, 32, 40, 48, 56, 64, 80, 96,112,128,144,160,0} /* V2 L2+L3 */
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};
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/* Bitrate pointer table, indexed by version and layer */
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static const short *bitrate_table[3][3] =
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{
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{bitrates[0], bitrates[1], bitrates[2]},
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{bitrates[3], bitrates[4], bitrates[4]},
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{bitrates[3], bitrates[4], bitrates[4]}
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};
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/* Sampling frequency table, indexed by version and frequency index */
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static const unsigned short freq_table[3][3] =
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{
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{44100, 48000, 32000}, /* MPEG Version 1 */
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{22050, 24000, 16000}, /* MPEG version 2 */
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{11025, 12000, 8000}, /* MPEG version 2.5 */
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};
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unsigned long bytes2int(unsigned long b0,
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unsigned long b1,
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unsigned long b2,
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unsigned long b3)
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{
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return (((long)(b0 & 0xFF) << (3*8)) |
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((long)(b1 & 0xFF) << (2*8)) |
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((long)(b2 & 0xFF) << (1*8)) |
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((long)(b3 & 0xFF) << (0*8)));
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}
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/* check if 'head' is a valid mp3 frame header */
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static bool is_mp3frameheader(unsigned long head)
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{
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if ((head & SYNC_MASK) != (unsigned long)SYNC_MASK) /* bad sync? */
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return false;
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if ((head & VERSION_MASK) == (1L << 19)) /* bad version? */
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return false;
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if (!(head & LAYER_MASK)) /* no layer? */
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return false;
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#if CONFIG_CODEC != SWCODEC
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/* The MAS can't decode layer 1, so treat layer 1 data as invalid */
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if ((head & LAYER_MASK) == LAYER_MASK)
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return false;
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#endif
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if ((head & BITRATE_MASK) == BITRATE_MASK) /* bad bitrate? */
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return false;
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if (!(head & BITRATE_MASK)) /* no bitrate? */
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return false;
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if ((head & SAMPLERATE_MASK) == SAMPLERATE_MASK) /* bad sample rate? */
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return false;
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return true;
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}
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static bool mp3headerinfo(struct mp3info *info, unsigned long header)
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{
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int bitindex, freqindex;
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/* MPEG Audio Version */
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if ((header & VERSION_MASK) >> 19 >= sizeof(version_table))
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return false;
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info->version = version_table[(header & VERSION_MASK) >> 19];
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if (info->version < 0)
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return false;
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/* Layer */
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info->layer = 3 - ((header & LAYER_MASK) >> 17);
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if (info->layer == 3)
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return false;
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info->protection = (header & PROTECTION_MASK) ? true : false;
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/* Bitrate */
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bitindex = (header & BITRATE_MASK) >> 12;
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info->bitrate = bitrate_table[info->version][info->layer][bitindex];
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if(info->bitrate == 0)
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return false;
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/* Sampling frequency */
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freqindex = (header & SAMPLERATE_MASK) >> 10;
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if (freqindex == 3)
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return false;
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info->frequency = freq_table[info->version][freqindex];
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info->padding = (header & PADDING_MASK) ? 1 : 0;
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/* Calculate number of bytes, calculation depends on layer */
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if (info->layer == 0) {
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info->frame_samples = 384;
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info->frame_size = (12000 * info->bitrate / info->frequency
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+ info->padding) * 4;
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}
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else {
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if ((info->version > MPEG_VERSION1) && (info->layer == 2))
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info->frame_samples = 576;
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else
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info->frame_samples = 1152;
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info->frame_size = (1000/8) * info->frame_samples * info->bitrate
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/ info->frequency + info->padding;
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}
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/* Frametime fraction denominator */
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if (freqindex != 0) { /* 48/32/24/16/12/8 kHz */
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info->ft_den = 1; /* integer number of milliseconds */
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}
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else { /* 44.1/22.05/11.025 kHz */
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if (info->layer == 0) /* layer 1 */
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info->ft_den = 147;
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else /* layer 2+3 */
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info->ft_den = 49;
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}
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/* Frametime fraction numerator */
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info->ft_num = 1000 * info->ft_den * info->frame_samples / info->frequency;
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info->channel_mode = (header & CHANNELMODE_MASK) >> 6;
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info->mode_extension = (header & MODE_EXT_MASK) >> 4;
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info->emphasis = header & EMPHASIS_MASK;
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#ifdef DEBUG_VERBOSE
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DEBUGF( "Header: %08lx, Ver %d, lay %d, bitr %d, freq %ld, "
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"chmode %d, mode_ext %d, emph %d, bytes: %d time: %d/%d\n",
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header, info->version, info->layer+1, info->bitrate,
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info->frequency, info->channel_mode, info->mode_extension,
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info->emphasis, info->frame_size, info->ft_num, info->ft_den);
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#endif
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return true;
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}
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static unsigned long __find_next_frame(int fd, long *offset, long max_offset,
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unsigned long last_header,
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int(*getfunc)(int fd, unsigned char *c))
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{
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unsigned long header=0;
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unsigned char tmp;
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int i;
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long pos = 0;
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/* We remember the last header we found, to use as a template to see if
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the header we find has the same frequency, layer etc */
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last_header &= 0xffff0c00;
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/* Fill up header with first 24 bits */
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for(i = 0; i < 3; i++) {
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header <<= 8;
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if(!getfunc(fd, &tmp))
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return 0;
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header |= tmp;
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pos++;
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}
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do {
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header <<= 8;
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if(!getfunc(fd, &tmp))
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return 0;
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header |= tmp;
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pos++;
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if(max_offset > 0 && pos > max_offset)
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return 0;
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} while(!is_mp3frameheader(header) ||
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(last_header?((header & 0xffff0c00) != last_header):false));
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*offset = pos - 4;
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#if defined(DEBUG)
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if(*offset)
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DEBUGF("Warning: skipping %ld bytes of garbage\n", *offset);
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#endif
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return header;
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}
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static int fileread(int fd, unsigned char *c)
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{
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return read(fd, c, 1);
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}
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unsigned long find_next_frame(int fd, long *offset, long max_offset, unsigned long last_header)
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{
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return __find_next_frame(fd, offset, max_offset, last_header, fileread);
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}
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#ifndef __PCTOOL__
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static int fnf_read_index;
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static int fnf_buf_len;
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static int buf_getbyte(int fd, unsigned char *c)
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{
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if(fnf_read_index < fnf_buf_len)
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{
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*c = audiobuf[fnf_read_index++];
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return 1;
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}
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else
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{
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fnf_buf_len = read(fd, audiobuf, audiobufend - audiobuf);
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if(fnf_buf_len < 0)
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return -1;
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fnf_read_index = 0;
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if(fnf_buf_len > 0)
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{
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*c = audiobuf[fnf_read_index++];
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return 1;
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}
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else
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return 0;
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}
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return 0;
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}
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static int buf_seek(int fd, int len)
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{
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fnf_read_index += len;
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if(fnf_read_index > fnf_buf_len)
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{
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len = fnf_read_index - fnf_buf_len;
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fnf_buf_len = read(fd, audiobuf, audiobufend - audiobuf);
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if(fnf_buf_len < 0)
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return -1;
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fnf_read_index = 0;
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fnf_read_index += len;
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}
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if(fnf_read_index > fnf_buf_len)
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{
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return -1;
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}
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else
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return 0;
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}
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static void buf_init(void)
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{
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fnf_buf_len = 0;
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fnf_read_index = 0;
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}
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static unsigned long buf_find_next_frame(int fd, long *offset, long max_offset,
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unsigned long last_header)
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{
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return __find_next_frame(fd, offset, max_offset, last_header, buf_getbyte);
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}
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static int audiobuflen;
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static int mem_pos;
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static int mem_cnt;
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static int mem_maxlen;
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static int mem_getbyte(int dummy, unsigned char *c)
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{
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dummy = dummy;
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*c = audiobuf[mem_pos++];
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if(mem_pos >= audiobuflen)
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mem_pos = 0;
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if(mem_cnt++ >= mem_maxlen)
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return 0;
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else
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return 1;
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}
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unsigned long mem_find_next_frame(int startpos, long *offset, long max_offset,
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unsigned long last_header)
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{
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audiobuflen = audiobufend - audiobuf;
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mem_pos = startpos;
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mem_cnt = 0;
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mem_maxlen = max_offset;
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return __find_next_frame(0, offset, max_offset, last_header, mem_getbyte);
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}
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#endif
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int get_mp3file_info(int fd, struct mp3info *info)
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{
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unsigned char frame[1800];
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unsigned char *vbrheader;
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unsigned long header;
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long bytecount;
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int num_offsets;
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int frames_per_entry;
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int i;
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long offset;
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int j;
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long tmp;
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header = find_next_frame(fd, &bytecount, 0x20000, 0);
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/* Quit if we haven't found a valid header within 128K */
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if(header == 0)
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return -1;
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memset(info, 0, sizeof(struct mp3info));
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#if CONFIG_CODEC==SWCODEC
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/* These two are needed for proper LAME gapless MP3 playback */
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info->enc_delay = -1;
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info->enc_padding = -1;
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#endif
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if(!mp3headerinfo(info, header))
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return -2;
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/* OK, we have found a frame. Let's see if it has a Xing header */
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if (info->frame_size-4 >= (int)sizeof(frame))
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{
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#if defined(DEBUG)
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DEBUGF("Error: Invalid id3 header, frame_size: %d\n", info->frame_size);
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#endif
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return -8;
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}
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if(read(fd, frame, info->frame_size-4) < 0)
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return -3;
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/* calculate position of VBR header */
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if ( info->version == MPEG_VERSION1 ) {
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if (info->channel_mode == 3) /* mono */
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vbrheader = frame + 17;
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else
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vbrheader = frame + 32;
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}
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else {
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if (info->channel_mode == 3) /* mono */
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vbrheader = frame + 9;
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else
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vbrheader = frame + 17;
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}
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if (!memcmp(vbrheader, "Xing", 4)
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|| !memcmp(vbrheader, "Info", 4))
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{
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int i = 8; /* Where to start parsing info */
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/* DEBUGF("Xing/Info header\n"); */
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/* Remember where in the file the Xing header is */
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info->vbr_header_pos = lseek(fd, 0, SEEK_CUR) - info->frame_size;
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/* We want to skip the Xing frame when playing the stream */
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bytecount += info->frame_size;
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/* Now get the next frame to find out the real info about
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the mp3 stream */
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header = find_next_frame(fd, &tmp, 0x20000, 0);
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if(header == 0)
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return -4;
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if(!mp3headerinfo(info, header))
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return -5;
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/* Is it a VBR file? */
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info->is_vbr = info->is_xing_vbr = !memcmp(vbrheader, "Xing", 4);
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if (vbrheader[7] & VBR_FRAMES_FLAG) /* Is the frame count there? */
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{
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info->frame_count = bytes2int(vbrheader[i], vbrheader[i+1],
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vbrheader[i+2], vbrheader[i+3]);
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if (info->frame_count <= ULONG_MAX / info->ft_num)
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info->file_time = info->frame_count * info->ft_num / info->ft_den;
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else
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info->file_time = info->frame_count / info->ft_den * info->ft_num;
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i += 4;
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}
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if (vbrheader[7] & VBR_BYTES_FLAG) /* Is byte count there? */
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{
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info->byte_count = bytes2int(vbrheader[i], vbrheader[i+1],
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vbrheader[i+2], vbrheader[i+3]);
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i += 4;
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}
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if (info->file_time && info->byte_count)
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{
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if (info->byte_count <= (ULONG_MAX/8))
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info->bitrate = info->byte_count * 8 / info->file_time;
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else
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info->bitrate = info->byte_count / (info->file_time >> 3);
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}
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else
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info->bitrate = 0;
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if (vbrheader[7] & VBR_TOC_FLAG) /* Is table-of-contents there? */
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{
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info->has_toc = true;
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memcpy( info->toc, vbrheader+i, 100 );
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i += 100;
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}
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if (vbrheader[7] & VBR_QUALITY_FLAG)
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{
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/* We don't care about this, but need to skip it */
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i += 4;
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}
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#if CONFIG_CODEC==SWCODEC
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i += 21;
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info->enc_delay = (vbrheader[i] << 4) | (vbrheader[i + 1] >> 4);
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info->enc_padding = ((vbrheader[i + 1] & 0x0f) << 8) | vbrheader[i + 2];
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/* TODO: This sanity checking is rather silly, seeing as how the LAME
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header contains a CRC field that can be used to verify integrity. */
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if (!(info->enc_delay >= 0 && info->enc_delay <= 2880 &&
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info->enc_padding >= 0 && info->enc_padding <= 2*1152))
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{
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/* Invalid data */
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info->enc_delay = -1;
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info->enc_padding = -1;
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}
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#endif
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}
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if (!memcmp(vbrheader, "VBRI", 4))
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{
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DEBUGF("VBRI header\n");
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/* We want to skip the VBRI frame when playing the stream */
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bytecount += info->frame_size;
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/* Now get the next frame to find out the real info about
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the mp3 stream */
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header = find_next_frame(fd, &tmp, 0x20000, 0);
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if(header == 0)
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return -6;
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bytecount += tmp;
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if(!mp3headerinfo(info, header))
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return -7;
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DEBUGF("%04x: %04x %04x ", 0, (short)(header >> 16),
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(short)(header & 0xffff));
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for(i = 4;i < (int)sizeof(frame)-4;i+=2) {
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if(i % 16 == 0) {
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DEBUGF("\n%04x: ", i-4);
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}
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DEBUGF("%04x ", (frame[i-4] << 8) | frame[i-4+1]);
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}
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|
|
|
DEBUGF("\n");
|
|
|
|
/* Yes, it is a FhG VBR file */
|
|
info->is_vbr = true;
|
|
info->is_vbri_vbr = true;
|
|
info->has_toc = false; /* We don't parse the TOC (yet) */
|
|
|
|
info->byte_count = bytes2int(vbrheader[10], vbrheader[11],
|
|
vbrheader[12], vbrheader[13]);
|
|
info->frame_count = bytes2int(vbrheader[14], vbrheader[15],
|
|
vbrheader[16], vbrheader[17]);
|
|
if (info->frame_count <= ULONG_MAX / info->ft_num)
|
|
info->file_time = info->frame_count * info->ft_num / info->ft_den;
|
|
else
|
|
info->file_time = info->frame_count / info->ft_den * info->ft_num;
|
|
|
|
if (info->byte_count <= (ULONG_MAX/8))
|
|
info->bitrate = info->byte_count * 8 / info->file_time;
|
|
else
|
|
info->bitrate = info->byte_count / (info->file_time >> 3);
|
|
|
|
/* We don't parse the TOC, since we don't yet know how to (FIXME) */
|
|
num_offsets = bytes2int(0, 0, vbrheader[18], vbrheader[19]);
|
|
frames_per_entry = bytes2int(0, 0, vbrheader[24], vbrheader[25]);
|
|
DEBUGF("Frame size (%dkpbs): %d bytes (0x%x)\n",
|
|
info->bitrate, info->frame_size, info->frame_size);
|
|
DEBUGF("Frame count: %lx\n", info->frame_count);
|
|
DEBUGF("Byte count: %lx\n", info->byte_count);
|
|
DEBUGF("Offsets: %d\n", num_offsets);
|
|
DEBUGF("Frames/entry: %d\n", frames_per_entry);
|
|
|
|
offset = 0;
|
|
|
|
for(i = 0;i < num_offsets;i++)
|
|
{
|
|
j = bytes2int(0, 0, vbrheader[26+i*2], vbrheader[27+i*2]);
|
|
offset += j;
|
|
DEBUGF("%03d: %lx (%x)\n", i, offset - bytecount, j);
|
|
}
|
|
}
|
|
|
|
return bytecount;
|
|
}
|
|
|
|
static void long2bytes(unsigned char *buf, long val)
|
|
{
|
|
buf[0] = (val >> 24) & 0xff;
|
|
buf[1] = (val >> 16) & 0xff;
|
|
buf[2] = (val >> 8) & 0xff;
|
|
buf[3] = val & 0xff;
|
|
}
|
|
|
|
#ifndef __PCTOOL__
|
|
int count_mp3_frames(int fd, int startpos, int filesize,
|
|
void (*progressfunc)(int))
|
|
{
|
|
unsigned long header = 0;
|
|
struct mp3info info;
|
|
int num_frames;
|
|
long bytes;
|
|
int cnt;
|
|
long progress_chunk = filesize / 50; /* Max is 50%, in 1% increments */
|
|
int progress_cnt = 0;
|
|
bool is_vbr = false;
|
|
int last_bitrate = 0;
|
|
int header_template = 0;
|
|
|
|
if(lseek(fd, startpos, SEEK_SET) < 0)
|
|
return -1;
|
|
|
|
buf_init();
|
|
|
|
/* Find out the total number of frames */
|
|
num_frames = 0;
|
|
cnt = 0;
|
|
|
|
while((header = buf_find_next_frame(fd, &bytes, -1, header_template))) {
|
|
mp3headerinfo(&info, header);
|
|
|
|
if(!header_template)
|
|
header_template = header;
|
|
|
|
/* See if this really is a VBR file */
|
|
if(last_bitrate && info.bitrate != last_bitrate)
|
|
{
|
|
is_vbr = true;
|
|
}
|
|
last_bitrate = info.bitrate;
|
|
|
|
buf_seek(fd, info.frame_size-4);
|
|
num_frames++;
|
|
if(progressfunc)
|
|
{
|
|
cnt += bytes + info.frame_size;
|
|
if(cnt > progress_chunk)
|
|
{
|
|
progress_cnt++;
|
|
progressfunc(progress_cnt);
|
|
cnt = 0;
|
|
}
|
|
}
|
|
}
|
|
DEBUGF("Total number of frames: %d\n", num_frames);
|
|
|
|
if(is_vbr)
|
|
return num_frames;
|
|
else
|
|
{
|
|
DEBUGF("Not a VBR file\n");
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static const char cooltext[] = "Rockbox - rocks your box";
|
|
|
|
/* buf needs to be the audio buffer with TOC generation enabled,
|
|
and at least MAX_XING_HEADER_SIZE bytes otherwise */
|
|
int create_xing_header(int fd, long startpos, long filesize,
|
|
unsigned char *buf, unsigned long num_frames,
|
|
unsigned long rec_time, unsigned long header_template,
|
|
void (*progressfunc)(int), bool generate_toc)
|
|
{
|
|
struct mp3info info;
|
|
unsigned char toc[100];
|
|
unsigned long header = 0;
|
|
unsigned long xing_header_template = header_template;
|
|
unsigned long filepos;
|
|
long pos, last_pos;
|
|
long j;
|
|
long bytes;
|
|
int i;
|
|
int index;
|
|
|
|
DEBUGF("create_xing_header()\n");
|
|
|
|
if(generate_toc)
|
|
{
|
|
lseek(fd, startpos, SEEK_SET);
|
|
buf_init();
|
|
|
|
/* Generate filepos table */
|
|
last_pos = 0;
|
|
filepos = 0;
|
|
header = 0;
|
|
for(i = 0;i < 100;i++) {
|
|
/* Calculate the absolute frame number for this seek point */
|
|
pos = i * num_frames / 100;
|
|
|
|
/* Advance from the last seek point to this one */
|
|
for(j = 0;j < pos - last_pos;j++)
|
|
{
|
|
header = buf_find_next_frame(fd, &bytes, -1, header_template);
|
|
filepos += bytes;
|
|
mp3headerinfo(&info, header);
|
|
buf_seek(fd, info.frame_size-4);
|
|
filepos += info.frame_size;
|
|
|
|
if(!header_template)
|
|
header_template = header;
|
|
}
|
|
|
|
/* Save a header for later use if header_template is empty.
|
|
We only save one header, and we want to save one in the
|
|
middle of the stream, just in case the first and the last
|
|
headers are corrupt. */
|
|
if(!xing_header_template && i == 1)
|
|
xing_header_template = header;
|
|
|
|
if(progressfunc)
|
|
{
|
|
progressfunc(50 + i/2);
|
|
}
|
|
|
|
/* Fill in the TOC entry */
|
|
/* each toc is a single byte indicating how many 256ths of the
|
|
* way through the file, is that percent of the way through the
|
|
* song. the easy method, filepos*256/filesize, chokes when
|
|
* the upper 8 bits of the file position are nonzero
|
|
* (i.e. files over 16mb in size).
|
|
*/
|
|
if (filepos > (ULONG_MAX/256))
|
|
{
|
|
/* instead of multiplying filepos by 256, we divide
|
|
* filesize by 256.
|
|
*/
|
|
toc[i] = filepos / (filesize >> 8);
|
|
}
|
|
else
|
|
{
|
|
toc[i] = filepos * 256 / filesize;
|
|
}
|
|
|
|
DEBUGF("Pos %d: %ld relpos: %ld filepos: %lx tocentry: %x\n",
|
|
i, pos, pos-last_pos, filepos, toc[i]);
|
|
|
|
last_pos = pos;
|
|
}
|
|
}
|
|
|
|
/* Use the template header and create a new one.
|
|
We ignore the Protection bit even if the rest of the stream is
|
|
protected. */
|
|
header = xing_header_template & ~(BITRATE_MASK|PROTECTION_MASK|PADDING_MASK);
|
|
header |= 8 << 12; /* This gives us plenty of space, 192..576 bytes */
|
|
|
|
if (!mp3headerinfo(&info, header))
|
|
return 0; /* invalid header */
|
|
|
|
if (num_frames == 0 && rec_time) {
|
|
/* estimate the number of frames based on the recording time */
|
|
if (rec_time <= ULONG_MAX / info.ft_den)
|
|
num_frames = rec_time * info.ft_den / info.ft_num;
|
|
else
|
|
num_frames = rec_time / info.ft_num * info.ft_den;
|
|
}
|
|
|
|
/* Clear the frame */
|
|
memset(buf, 0, MAX_XING_HEADER_SIZE);
|
|
|
|
/* Write the header to the buffer */
|
|
long2bytes(buf, header);
|
|
|
|
/* Calculate position of VBR header */
|
|
if (info.version == MPEG_VERSION1) {
|
|
if (info.channel_mode == 3) /* mono */
|
|
index = 21;
|
|
else
|
|
index = 36;
|
|
}
|
|
else {
|
|
if (info.channel_mode == 3) /* mono */
|
|
index = 13;
|
|
else
|
|
index = 21;
|
|
}
|
|
|
|
/* Create the Xing data */
|
|
memcpy(&buf[index], "Xing", 4);
|
|
long2bytes(&buf[index+4], (num_frames ? VBR_FRAMES_FLAG : 0)
|
|
| (filesize ? VBR_BYTES_FLAG : 0)
|
|
| (generate_toc ? VBR_TOC_FLAG : 0));
|
|
index += 8;
|
|
if(num_frames)
|
|
{
|
|
long2bytes(&buf[index], num_frames);
|
|
index += 4;
|
|
}
|
|
|
|
if(filesize)
|
|
{
|
|
long2bytes(&buf[index], filesize - startpos);
|
|
index += 4;
|
|
}
|
|
|
|
/* Copy the TOC */
|
|
memcpy(buf + index, toc, 100);
|
|
|
|
/* And some extra cool info */
|
|
memcpy(buf + index + 100, cooltext, sizeof(cooltext));
|
|
|
|
#ifdef DEBUG
|
|
for(i = 0;i < info.frame_size;i++)
|
|
{
|
|
if(i && !(i % 16))
|
|
DEBUGF("\n");
|
|
|
|
DEBUGF("%02x ", buf[i]);
|
|
}
|
|
#endif
|
|
|
|
return info.frame_size;
|
|
}
|
|
|
|
#endif
|