diff options
Diffstat (limited to 'faad2/src/aacDECdrop/audio.c')
| -rw-r--r-- | faad2/src/aacDECdrop/audio.c | 494 |
1 files changed, 0 insertions, 494 deletions
diff --git a/faad2/src/aacDECdrop/audio.c b/faad2/src/aacDECdrop/audio.c deleted file mode 100644 index 843d650..0000000 --- a/faad2/src/aacDECdrop/audio.c +++ /dev/null @@ -1,494 +0,0 @@ -/*
-** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
-** Copyright (C) 2003-2004 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: audio.c,v 1.11 2004/02/06 10:23:27 menno Exp $
-**/
-
-#ifdef _WIN32
-#include <io.h>
-#endif
-#include <stdlib.h>
-#include <stdio.h>
-#include <fcntl.h>
-#include <math.h>
-#include <faad.h>
-#include "audio.h"
-
-
-audio_file *open_audio_file(char *infile, int samplerate, int channels,
- int outputFormat, int fileType, long channelMask)
-{
- audio_file *aufile = malloc(sizeof(audio_file));
-
- aufile->outputFormat = outputFormat;
-
- aufile->samplerate = samplerate;
- aufile->channels = channels;
- aufile->total_samples = 0;
- aufile->fileType = fileType;
- aufile->channelMask = channelMask;
-
- switch (outputFormat)
- {
- case FAAD_FMT_16BIT:
- aufile->bits_per_sample = 16;
- break;
- case FAAD_FMT_24BIT:
- aufile->bits_per_sample = 24;
- break;
- case FAAD_FMT_32BIT:
- case FAAD_FMT_FLOAT:
- aufile->bits_per_sample = 32;
- break;
- default:
- if (aufile) free(aufile);
- return NULL;
- }
-
- if(infile[0] == '-')
- {
-#ifdef _WIN32
- setmode(fileno(stdout), O_BINARY);
-#endif
- aufile->sndfile = stdout;
- } else {
- aufile->sndfile = fopen(infile, "wb");
- }
-
- if (aufile->sndfile == NULL)
- {
- if (aufile) free(aufile);
- return NULL;
- }
-
- if (aufile->fileType == OUTPUT_WAV)
- {
- if (aufile->channelMask)
- write_wav_extensible_header(aufile, aufile->channelMask);
- else
- write_wav_header(aufile);
- }
-
- return aufile;
-}
-
-int write_audio_file(audio_file *aufile, void *sample_buffer, int samples, int offset)
-{
- char *buf = (char *)sample_buffer;
- switch (aufile->outputFormat)
- {
- case FAAD_FMT_16BIT:
- return write_audio_16bit(aufile, buf + offset*2, samples);
- case FAAD_FMT_24BIT:
- return write_audio_24bit(aufile, buf + offset*4, samples);
- case FAAD_FMT_32BIT:
- return write_audio_32bit(aufile, buf + offset*4, samples);
- case FAAD_FMT_FLOAT:
- return write_audio_float(aufile, buf + offset*4, samples);
- default:
- return 0;
- }
-
- return 0;
-}
-
-void close_audio_file(audio_file *aufile)
-{
- if (aufile->fileType == OUTPUT_WAV)
- {
- fseek(aufile->sndfile, 0, SEEK_SET);
-
- if (aufile->channelMask)
- write_wav_extensible_header(aufile, aufile->channelMask);
- else
- write_wav_header(aufile);
- }
-
- fclose(aufile->sndfile);
-
- if (aufile) free(aufile);
-}
-
-static int write_wav_header(audio_file *aufile)
-{
- unsigned char header[44];
- unsigned char* p = header;
- unsigned int bytes = (aufile->bits_per_sample + 7) / 8;
- float data_size = (float)bytes * aufile->total_samples;
- unsigned long word32;
-
- *p++ = 'R'; *p++ = 'I'; *p++ = 'F'; *p++ = 'F';
-
- word32 = (data_size + (44 - 8) < (float)MAXWAVESIZE) ?
- (unsigned long)data_size + (44 - 8) : (unsigned long)MAXWAVESIZE;
- *p++ = (unsigned char)(word32 >> 0);
- *p++ = (unsigned char)(word32 >> 8);
- *p++ = (unsigned char)(word32 >> 16);
- *p++ = (unsigned char)(word32 >> 24);
-
- *p++ = 'W'; *p++ = 'A'; *p++ = 'V'; *p++ = 'E';
-
- *p++ = 'f'; *p++ = 'm'; *p++ = 't'; *p++ = ' ';
-
- *p++ = 0x10; *p++ = 0x00; *p++ = 0x00; *p++ = 0x00;
-
- if (aufile->outputFormat == FAAD_FMT_FLOAT)
- {
- *p++ = 0x03; *p++ = 0x00;
- } else {
- *p++ = 0x01; *p++ = 0x00;
- }
-
- *p++ = (unsigned char)(aufile->channels >> 0);
- *p++ = (unsigned char)(aufile->channels >> 8);
-
- word32 = (unsigned long)(aufile->samplerate + 0.5);
- *p++ = (unsigned char)(word32 >> 0);
- *p++ = (unsigned char)(word32 >> 8);
- *p++ = (unsigned char)(word32 >> 16);
- *p++ = (unsigned char)(word32 >> 24);
-
- word32 = aufile->samplerate * bytes * aufile->channels;
- *p++ = (unsigned char)(word32 >> 0);
- *p++ = (unsigned char)(word32 >> 8);
- *p++ = (unsigned char)(word32 >> 16);
- *p++ = (unsigned char)(word32 >> 24);
-
- word32 = bytes * aufile->channels;
- *p++ = (unsigned char)(word32 >> 0);
- *p++ = (unsigned char)(word32 >> 8);
-
- *p++ = (unsigned char)(aufile->bits_per_sample >> 0);
- *p++ = (unsigned char)(aufile->bits_per_sample >> 8);
-
- *p++ = 'd'; *p++ = 'a'; *p++ = 't'; *p++ = 'a';
-
- word32 = data_size < MAXWAVESIZE ?
- (unsigned long)data_size : (unsigned long)MAXWAVESIZE;
- *p++ = (unsigned char)(word32 >> 0);
- *p++ = (unsigned char)(word32 >> 8);
- *p++ = (unsigned char)(word32 >> 16);
- *p++ = (unsigned char)(word32 >> 24);
-
- return fwrite(header, sizeof(header), 1, aufile->sndfile);
-}
-
-static int write_wav_extensible_header(audio_file *aufile, long channelMask)
-{
- unsigned char header[68];
- unsigned char* p = header;
- unsigned int bytes = (aufile->bits_per_sample + 7) / 8;
- float data_size = (float)bytes * aufile->total_samples;
- unsigned long word32;
-
- *p++ = 'R'; *p++ = 'I'; *p++ = 'F'; *p++ = 'F';
-
- word32 = (data_size + (68 - 8) < (float)MAXWAVESIZE) ?
- (unsigned long)data_size + (68 - 8) : (unsigned long)MAXWAVESIZE;
- *p++ = (unsigned char)(word32 >> 0);
- *p++ = (unsigned char)(word32 >> 8);
- *p++ = (unsigned char)(word32 >> 16);
- *p++ = (unsigned char)(word32 >> 24);
-
- *p++ = 'W'; *p++ = 'A'; *p++ = 'V'; *p++ = 'E';
-
- *p++ = 'f'; *p++ = 'm'; *p++ = 't'; *p++ = ' ';
-
- *p++ = /*0x10*/0x28; *p++ = 0x00; *p++ = 0x00; *p++ = 0x00;
-
- /* WAVE_FORMAT_EXTENSIBLE */
- *p++ = 0xFE; *p++ = 0xFF;
-
- *p++ = (unsigned char)(aufile->channels >> 0);
- *p++ = (unsigned char)(aufile->channels >> 8);
-
- word32 = (unsigned long)(aufile->samplerate + 0.5);
- *p++ = (unsigned char)(word32 >> 0);
- *p++ = (unsigned char)(word32 >> 8);
- *p++ = (unsigned char)(word32 >> 16);
- *p++ = (unsigned char)(word32 >> 24);
-
- word32 = aufile->samplerate * bytes * aufile->channels;
- *p++ = (unsigned char)(word32 >> 0);
- *p++ = (unsigned char)(word32 >> 8);
- *p++ = (unsigned char)(word32 >> 16);
- *p++ = (unsigned char)(word32 >> 24);
-
- word32 = bytes * aufile->channels;
- *p++ = (unsigned char)(word32 >> 0);
- *p++ = (unsigned char)(word32 >> 8);
-
- *p++ = (unsigned char)(aufile->bits_per_sample >> 0);
- *p++ = (unsigned char)(aufile->bits_per_sample >> 8);
-
- /* cbSize */
- *p++ = (unsigned char)(22);
- *p++ = (unsigned char)(0);
-
- /* WAVEFORMATEXTENSIBLE */
-
- /* wValidBitsPerSample */
- *p++ = (unsigned char)(aufile->bits_per_sample >> 0);
- *p++ = (unsigned char)(aufile->bits_per_sample >> 8);
-
- /* dwChannelMask */
- word32 = channelMask;
- *p++ = (unsigned char)(word32 >> 0);
- *p++ = (unsigned char)(word32 >> 8);
- *p++ = (unsigned char)(word32 >> 16);
- *p++ = (unsigned char)(word32 >> 24);
-
- /* SubFormat */
- if (aufile->outputFormat == FAAD_FMT_FLOAT)
- {
- /* KSDATAFORMAT_SUBTYPE_IEEE_FLOAT: 00000003-0000-0010-8000-00aa00389b71 */
- *p++ = 0x03;
- *p++ = 0x00;
- *p++ = 0x00;
- *p++ = 0x00;
- *p++ = 0x00; *p++ = 0x00; *p++ = 0x10; *p++ = 0x00; *p++ = 0x80; *p++ = 0x00;
- *p++ = 0x00; *p++ = 0xaa; *p++ = 0x00; *p++ = 0x38; *p++ = 0x9b; *p++ = 0x71;
- } else {
- /* KSDATAFORMAT_SUBTYPE_PCM: 00000001-0000-0010-8000-00aa00389b71 */
- *p++ = 0x01;
- *p++ = 0x00;
- *p++ = 0x00;
- *p++ = 0x00;
- *p++ = 0x00; *p++ = 0x00; *p++ = 0x10; *p++ = 0x00; *p++ = 0x80; *p++ = 0x00;
- *p++ = 0x00; *p++ = 0xaa; *p++ = 0x00; *p++ = 0x38; *p++ = 0x9b; *p++ = 0x71;
- }
-
- /* end WAVEFORMATEXTENSIBLE */
-
- *p++ = 'd'; *p++ = 'a'; *p++ = 't'; *p++ = 'a';
-
- word32 = data_size < MAXWAVESIZE ?
- (unsigned long)data_size : (unsigned long)MAXWAVESIZE;
- *p++ = (unsigned char)(word32 >> 0);
- *p++ = (unsigned char)(word32 >> 8);
- *p++ = (unsigned char)(word32 >> 16);
- *p++ = (unsigned char)(word32 >> 24);
-
- return fwrite(header, sizeof(header), 1, aufile->sndfile);
-}
-
-static int write_audio_16bit(audio_file *aufile, void *sample_buffer,
- unsigned int samples)
-{
- int ret;
- unsigned int i;
- short *sample_buffer16 = (short*)sample_buffer;
- char *data = malloc(samples*aufile->bits_per_sample*sizeof(char)/8);
-
- aufile->total_samples += samples;
-
- if (aufile->channels == 6 && aufile->channelMask)
- {
- for (i = 0; i < samples; i += aufile->channels)
- {
- short r1, r2, r3, r4, r5, r6;
- r1 = sample_buffer16[i];
- r2 = sample_buffer16[i+1];
- r3 = sample_buffer16[i+2];
- r4 = sample_buffer16[i+3];
- r5 = sample_buffer16[i+4];
- r6 = sample_buffer16[i+5];
- sample_buffer16[i] = r2;
- sample_buffer16[i+1] = r3;
- sample_buffer16[i+2] = r1;
- sample_buffer16[i+3] = r6;
- sample_buffer16[i+4] = r4;
- sample_buffer16[i+5] = r5;
- }
- }
-
- for (i = 0; i < samples; i++)
- {
- data[i*2] = (char)(sample_buffer16[i] & 0xFF);
- data[i*2+1] = (char)((sample_buffer16[i] >> 8) & 0xFF);
- }
-
- ret = fwrite(data, samples, aufile->bits_per_sample/8, aufile->sndfile);
-
- if (data) free(data);
-
- return ret;
-}
-
-static int write_audio_24bit(audio_file *aufile, void *sample_buffer,
- unsigned int samples)
-{
- int ret;
- unsigned int i;
- long *sample_buffer24 = (long*)sample_buffer;
- char *data = malloc(samples*aufile->bits_per_sample*sizeof(char)/8);
-
- aufile->total_samples += samples;
-
- if (aufile->channels == 6 && aufile->channelMask)
- {
- for (i = 0; i < samples; i += aufile->channels)
- {
- long r1, r2, r3, r4, r5, r6;
- r1 = sample_buffer24[i];
- r2 = sample_buffer24[i+1];
- r3 = sample_buffer24[i+2];
- r4 = sample_buffer24[i+3];
- r5 = sample_buffer24[i+4];
- r6 = sample_buffer24[i+5];
- sample_buffer24[i] = r2;
- sample_buffer24[i+1] = r3;
- sample_buffer24[i+2] = r1;
- sample_buffer24[i+3] = r6;
- sample_buffer24[i+4] = r4;
- sample_buffer24[i+5] = r5;
- }
- }
-
- for (i = 0; i < samples; i++)
- {
- data[i*3] = (char)(sample_buffer24[i] & 0xFF);
- data[i*3+1] = (char)((sample_buffer24[i] >> 8) & 0xFF);
- data[i*3+2] = (char)((sample_buffer24[i] >> 16) & 0xFF);
- }
-
- ret = fwrite(data, samples, aufile->bits_per_sample/8, aufile->sndfile);
-
- if (data) free(data);
-
- return ret;
-}
-
-static int write_audio_32bit(audio_file *aufile, void *sample_buffer,
- unsigned int samples)
-{
- int ret;
- unsigned int i;
- long *sample_buffer32 = (long*)sample_buffer;
- char *data = malloc(samples*aufile->bits_per_sample*sizeof(char)/8);
-
- aufile->total_samples += samples;
-
- if (aufile->channels == 6 && aufile->channelMask)
- {
- for (i = 0; i < samples; i += aufile->channels)
- {
- long r1, r2, r3, r4, r5, r6;
- r1 = sample_buffer32[i];
- r2 = sample_buffer32[i+1];
- r3 = sample_buffer32[i+2];
- r4 = sample_buffer32[i+3];
- r5 = sample_buffer32[i+4];
- r6 = sample_buffer32[i+5];
- sample_buffer32[i] = r2;
- sample_buffer32[i+1] = r3;
- sample_buffer32[i+2] = r1;
- sample_buffer32[i+3] = r6;
- sample_buffer32[i+4] = r4;
- sample_buffer32[i+5] = r5;
- }
- }
-
- for (i = 0; i < samples; i++)
- {
- data[i*4] = (char)(sample_buffer32[i] & 0xFF);
- data[i*4+1] = (char)((sample_buffer32[i] >> 8) & 0xFF);
- data[i*4+2] = (char)((sample_buffer32[i] >> 16) & 0xFF);
- data[i*4+3] = (char)((sample_buffer32[i] >> 24) & 0xFF);
- }
-
- ret = fwrite(data, samples, aufile->bits_per_sample/8, aufile->sndfile);
-
- if (data) free(data);
-
- return ret;
-}
-
-static int write_audio_float(audio_file *aufile, void *sample_buffer,
- unsigned int samples)
-{
- int ret;
- unsigned int i;
- float *sample_buffer_f = (float*)sample_buffer;
- unsigned char *data = malloc(samples*aufile->bits_per_sample*sizeof(char)/8);
-
- aufile->total_samples += samples;
-
- if (aufile->channels == 6 && aufile->channelMask)
- {
- for (i = 0; i < samples; i += aufile->channels)
- {
- float r1, r2, r3, r4, r5, r6;
- r1 = sample_buffer_f[i];
- r2 = sample_buffer_f[i+1];
- r3 = sample_buffer_f[i+2];
- r4 = sample_buffer_f[i+3];
- r5 = sample_buffer_f[i+4];
- r6 = sample_buffer_f[i+5];
- sample_buffer_f[i] = r2;
- sample_buffer_f[i+1] = r3;
- sample_buffer_f[i+2] = r1;
- sample_buffer_f[i+3] = r6;
- sample_buffer_f[i+4] = r4;
- sample_buffer_f[i+5] = r5;
- }
- }
-
- for (i = 0; i < samples; i++)
- {
- int exponent, mantissa, negative = 0 ;
- float in = sample_buffer_f[i];
-
- data[i*4] = 0; data[i*4+1] = 0; data[i*4+2] = 0; data[i*4+3] = 0;
- if (in == 0.0)
- continue;
-
- if (in < 0.0)
- {
- in *= -1.0;
- negative = 1;
- }
- in = (float)frexp(in, &exponent);
- exponent += 126;
- in *= (float)0x1000000;
- mantissa = (((int)in) & 0x7FFFFF);
-
- if (negative)
- data[i*4+3] |= 0x80;
-
- if (exponent & 0x01)
- data[i*4+2] |= 0x80;
-
- data[i*4] = mantissa & 0xFF;
- data[i*4+1] = (mantissa >> 8) & 0xFF;
- data[i*4+2] |= (mantissa >> 16) & 0x7F;
- data[i*4+3] |= (exponent >> 1) & 0x7F;
- }
-
- ret = fwrite(data, samples, aufile->bits_per_sample/8, aufile->sndfile);
-
- if (data) free(data);
-
- return ret;
-}
|