diff options
Diffstat (limited to 'faad2/src/plugins/QCDMp4/aacinfo.c')
| -rw-r--r-- | faad2/src/plugins/QCDMp4/aacinfo.c | 224 |
1 files changed, 0 insertions, 224 deletions
diff --git a/faad2/src/plugins/QCDMp4/aacinfo.c b/faad2/src/plugins/QCDMp4/aacinfo.c deleted file mode 100644 index fb689d6..0000000 --- a/faad2/src/plugins/QCDMp4/aacinfo.c +++ /dev/null @@ -1,224 +0,0 @@ -/*
-** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
-** Copyright (C) 2003 M. Bakker, Ahead Software AG, http://www.nero.com
-**
-** This program is free software; you can redistribute it and/or modify
-** it under the terms of the GNU General Public License as published by
-** the Free Software Foundation; either version 2 of the License, or
-** (at your option) any later version.
-**
-** This program is distributed in the hope that it will be useful,
-** but WITHOUT ANY WARRANTY; without even the implied warranty of
-** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-** GNU General Public License for more details.
-**
-** You should have received a copy of the GNU General Public License
-** along with this program; if not, write to the Free Software
-** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-**
-** Any non-GPL usage of this software or parts of this software is strictly
-** forbidden.
-**
-** Commercial non-GPL licensing of this software is possible.
-** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
-**
-** $Id: aacinfo.c,v 1.3 2003/12/06 04:24:17 rjamorim Exp $
-**/
-
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-#include <malloc.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include "aacinfo.h"
-#include "utils.h"
-
-#define ADIF_MAX_SIZE 30 /* Should be enough */
-#define ADTS_MAX_SIZE 10 /* Should be enough */
-
-static int sample_rates[] = {96000,88200,64000,48000,44100,32000,24000,22050,16000,12000,11025,8000};
-
-static int read_ADIF_header(FILE *file, faadAACInfo *info)
-{
- int bitstream;
- unsigned char buffer[ADIF_MAX_SIZE];
- int skip_size = 0;
- int sf_idx;
-
- /* Get ADIF header data */
- info->headertype = 1;
-
- if (fread(buffer, 1, ADIF_MAX_SIZE, file) != ADIF_MAX_SIZE)
- return -1;
-
- /* copyright string */
- if(buffer[0] & 0x80)
- skip_size += 9; /* skip 9 bytes */
-
- bitstream = buffer[0 + skip_size] & 0x10;
- info->bitrate = ((unsigned int)(buffer[0 + skip_size] & 0x0F)<<19)|
- ((unsigned int)buffer[1 + skip_size]<<11)|
- ((unsigned int)buffer[2 + skip_size]<<3)|
- ((unsigned int)buffer[3 + skip_size] & 0xE0);
-
- if (bitstream == 0)
- {
- info->object_type = ((buffer[6 + skip_size]&0x01)<<1)|((buffer[7 + skip_size]&0x80)>>7);
- sf_idx = (buffer[7 + skip_size]&0x78)>>3;
- } else {
- info->object_type = (buffer[4 + skip_size] & 0x18)>>3;
- sf_idx = ((buffer[4 + skip_size] & 0x07)<<1)|((buffer[5 + skip_size] & 0x80)>>7);
- }
- info->sampling_rate = sample_rates[sf_idx];
-
- return 0;
-}
-
-static int read_ADTS_header(FILE *file, faadAACInfo *info)
-{
- /* Get ADTS header data */
- unsigned char buffer[ADTS_MAX_SIZE];
- int frames, t_framelength = 0, frame_length, sr_idx = 0, ID;
- int second = 0, pos;
- float frames_per_sec = 0;
- unsigned long bytes;
- unsigned long *tmp_seek_table = NULL;
-
- info->headertype = 2;
-
- /* Read all frames to ensure correct time and bitrate */
- for (frames = 0; /* */; frames++)
- {
- bytes = fread(buffer, 1, ADTS_MAX_SIZE, file);
-
- if (bytes != ADTS_MAX_SIZE)
- break;
-
- /* check syncword */
- if (!((buffer[0] == 0xFF)&&((buffer[1] & 0xF6) == 0xF0)))
- break;
-
- if (!frames)
- {
- /* fixed ADTS header is the same for every frame, so we read it only once */
- /* Syncword found, proceed to read in the fixed ADTS header */
- ID = buffer[1] & 0x08;
- info->object_type = (buffer[2]&0xC0)>>6;
- sr_idx = (buffer[2]&0x3C)>>2;
- info->channels = ((buffer[2]&0x01)<<2)|((buffer[3]&0xC0)>>6);
-
- frames_per_sec = sample_rates[sr_idx] / 1024.f;
- }
-
- /* ...and the variable ADTS header */
- if (ID == 0)
- {
- info->version = 4;
- } else { /* MPEG-2 */
- info->version = 2;
- }
- frame_length = ((((unsigned int)buffer[3] & 0x3)) << 11)
- | (((unsigned int)buffer[4]) << 3) | (buffer[5] >> 5);
-
- t_framelength += frame_length;
-
- pos = ftell(file) - ADTS_MAX_SIZE;
-
- fseek(file, frame_length - ADTS_MAX_SIZE, SEEK_CUR);
- }
-
- if (frames > 0)
- {
- float sec_per_frame, bytes_per_frame;
- info->sampling_rate = sample_rates[sr_idx];
- sec_per_frame = (float)info->sampling_rate/1024.0;
- bytes_per_frame = (float)t_framelength / (float)frames;
- info->bitrate = 8 * (int)floor(bytes_per_frame * sec_per_frame);
- info->length = (int)floor((float)frames/frames_per_sec)*1000;
- } else {
- info->sampling_rate = 4;
- info->bitrate = 128000;
- info->length = 0;
- info->channels = 0;
- }
-
- return 0;
-}
-
-int get_AAC_format(char *filename, faadAACInfo *info)
-{
- unsigned long tagsize;
- FILE *file;
- char buffer[10];
- unsigned long file_len;
- unsigned char adxx_id[5];
- unsigned long tmp;
-
- memset(info, 0, sizeof(faadAACInfo));
-
- file = fopen(filename, "rb");
-
- if(file == NULL)
- return -1;
-
- fseek(file, 0, SEEK_END);
- file_len = ftell(file);
- fseek(file, 0, SEEK_SET);
-
- /* Skip the tag, if it's there */
- tmp = fread(buffer, 10, 1, file);
-
- if (StringComp(buffer, "ID3", 3) == 0)
- {
- /* high bit is not used */
- tagsize = (buffer[6] << 21) | (buffer[7] << 14) |
- (buffer[8] << 7) | (buffer[9] << 0);
-
- fseek(file, tagsize, SEEK_CUR);
- tagsize += 10;
- } else {
- tagsize = 0;
- fseek(file, 0, SEEK_SET);
- }
-
- if (file_len)
- file_len -= tagsize;
-
- tmp = fread(adxx_id, 2, 1, file);
- adxx_id[5-1] = 0;
- info->length = 0;
-
- /* Determine the header type of the file, check the first two bytes */
- if (StringComp(adxx_id, "AD", 2) == 0)
- {
- /* We think its an ADIF header, but check the rest just to make sure */
- tmp = fread(adxx_id + 2, 2, 1, file);
-
- if (StringComp(adxx_id, "ADIF", 4) == 0)
- {
- read_ADIF_header(file, info);
-
- info->length = (int)((float)file_len*8000.0/((float)info->bitrate));
- }
- } else {
- /* No ADIF, check for ADTS header */
- if ((adxx_id[0] == 0xFF)&&((adxx_id[1] & 0xF6) == 0xF0))
- {
- /* ADTS header located */
- fseek(file, tagsize, SEEK_SET);
- read_ADTS_header(file, info);
- } else {
- /* Unknown/headerless AAC file, assume format: */
- info->version = 2;
- info->bitrate = 128000;
- info->sampling_rate = 44100;
- info->channels = 2;
- info->headertype = 0;
- info->object_type = 1;
- }
- }
-
- fclose(file);
-
- return 0;
-}
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