diff options
Diffstat (limited to 'faad2/src/libfaad/mp4.c')
| -rw-r--r-- | faad2/src/libfaad/mp4.c | 309 |
1 files changed, 0 insertions, 309 deletions
diff --git a/faad2/src/libfaad/mp4.c b/faad2/src/libfaad/mp4.c deleted file mode 100644 index 8972a7a..0000000 --- a/faad2/src/libfaad/mp4.c +++ /dev/null @@ -1,309 +0,0 @@ -/*
-** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
-** Copyright (C) 2003-2005 M. Bakker, Nero 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.
-**
-** The "appropriate copyright message" mentioned in section 2c of the GPLv2
-** must read: "Code from FAAD2 is copyright (c) Nero AG, www.nero.com"
-**
-** Commercial non-GPL licensing of this software is possible.
-** For more info contact Nero AG through Mpeg4AAClicense@nero.com.
-**
-** $Id: mp4.c,v 1.40 2009/02/06 03:39:58 menno Exp $
-**/
-
-#include "common.h"
-#include "structs.h"
-
-#include <stdlib.h>
-
-#include "bits.h"
-#include "mp4.h"
-#include "syntax.h"
-
-/* defines if an object type can be decoded by this library or not */
-static uint8_t ObjectTypesTable[32] = {
- 0, /* 0 NULL */
-#ifdef MAIN_DEC
- 1, /* 1 AAC Main */
-#else
- 0, /* 1 AAC Main */
-#endif
- 1, /* 2 AAC LC */
-#ifdef SSR_DEC
- 1, /* 3 AAC SSR */
-#else
- 0, /* 3 AAC SSR */
-#endif
-#ifdef LTP_DEC
- 1, /* 4 AAC LTP */
-#else
- 0, /* 4 AAC LTP */
-#endif
-#ifdef SBR_DEC
- 1, /* 5 SBR */
-#else
- 0, /* 5 SBR */
-#endif
- 0, /* 6 AAC Scalable */
- 0, /* 7 TwinVQ */
- 0, /* 8 CELP */
- 0, /* 9 HVXC */
- 0, /* 10 Reserved */
- 0, /* 11 Reserved */
- 0, /* 12 TTSI */
- 0, /* 13 Main synthetic */
- 0, /* 14 Wavetable synthesis */
- 0, /* 15 General MIDI */
- 0, /* 16 Algorithmic Synthesis and Audio FX */
-
- /* MPEG-4 Version 2 */
-#ifdef ERROR_RESILIENCE
- 1, /* 17 ER AAC LC */
- 0, /* 18 (Reserved) */
-#ifdef LTP_DEC
- 1, /* 19 ER AAC LTP */
-#else
- 0, /* 19 ER AAC LTP */
-#endif
- 0, /* 20 ER AAC scalable */
- 0, /* 21 ER TwinVQ */
- 0, /* 22 ER BSAC */
-#ifdef LD_DEC
- 1, /* 23 ER AAC LD */
-#else
- 0, /* 23 ER AAC LD */
-#endif
- 0, /* 24 ER CELP */
- 0, /* 25 ER HVXC */
- 0, /* 26 ER HILN */
- 0, /* 27 ER Parametric */
-#else /* No ER defined */
- 0, /* 17 ER AAC LC */
- 0, /* 18 (Reserved) */
- 0, /* 19 ER AAC LTP */
- 0, /* 20 ER AAC scalable */
- 0, /* 21 ER TwinVQ */
- 0, /* 22 ER BSAC */
- 0, /* 23 ER AAC LD */
- 0, /* 24 ER CELP */
- 0, /* 25 ER HVXC */
- 0, /* 26 ER HILN */
- 0, /* 27 ER Parametric */
-#endif
- 0, /* 28 (Reserved) */
- 0, /* 29 (Reserved) */
- 0, /* 30 (Reserved) */
- 0 /* 31 (Reserved) */
-};
-
-/* Table 1.6.1 */
-char NEAACDECAPI NeAACDecAudioSpecificConfig(unsigned char *pBuffer,
- unsigned long buffer_size,
- mp4AudioSpecificConfig *mp4ASC)
-{
- return AudioSpecificConfig2(pBuffer, buffer_size, mp4ASC, NULL, 0);
-}
-
-int8_t AudioSpecificConfigFromBitfile(bitfile *ld,
- mp4AudioSpecificConfig *mp4ASC,
- program_config *pce, uint32_t buffer_size, uint8_t short_form)
-{
- int8_t result = 0;
- uint32_t startpos = faad_get_processed_bits(ld);
-#ifdef SBR_DEC
- int8_t bits_to_decode = 0;
-#endif
-
- if (mp4ASC == NULL)
- return -8;
-
- memset(mp4ASC, 0, sizeof(mp4AudioSpecificConfig));
-
- mp4ASC->objectTypeIndex = (uint8_t)faad_getbits(ld, 5
- DEBUGVAR(1,1,"parse_audio_decoder_specific_info(): ObjectTypeIndex"));
-
- mp4ASC->samplingFrequencyIndex = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,2,"parse_audio_decoder_specific_info(): SamplingFrequencyIndex"));
- if(mp4ASC->samplingFrequencyIndex==0x0f)
- faad_getbits(ld, 24);
-
- mp4ASC->channelsConfiguration = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,3,"parse_audio_decoder_specific_info(): ChannelsConfiguration"));
-
- mp4ASC->samplingFrequency = get_sample_rate(mp4ASC->samplingFrequencyIndex);
-
- if (ObjectTypesTable[mp4ASC->objectTypeIndex] != 1)
- {
- return -1;
- }
-
- if (mp4ASC->samplingFrequency == 0)
- {
- return -2;
- }
-
- if (mp4ASC->channelsConfiguration > 7)
- {
- return -3;
- }
-
-#if (defined(PS_DEC) || defined(DRM_PS))
- /* check if we have a mono file */
- if (mp4ASC->channelsConfiguration == 1)
- {
- /* upMatrix to 2 channels for implicit signalling of PS */
- mp4ASC->channelsConfiguration = 2;
- }
-#endif
-
-#ifdef SBR_DEC
- mp4ASC->sbr_present_flag = -1;
- if (mp4ASC->objectTypeIndex == 5)
- {
- uint8_t tmp;
-
- mp4ASC->sbr_present_flag = 1;
- tmp = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,5,"parse_audio_decoder_specific_info(): extensionSamplingFrequencyIndex"));
- /* check for downsampled SBR */
- if (tmp == mp4ASC->samplingFrequencyIndex)
- mp4ASC->downSampledSBR = 1;
- mp4ASC->samplingFrequencyIndex = tmp;
- if (mp4ASC->samplingFrequencyIndex == 15)
- {
- mp4ASC->samplingFrequency = (uint32_t)faad_getbits(ld, 24
- DEBUGVAR(1,6,"parse_audio_decoder_specific_info(): extensionSamplingFrequencyIndex"));
- } else {
- mp4ASC->samplingFrequency = get_sample_rate(mp4ASC->samplingFrequencyIndex);
- }
- mp4ASC->objectTypeIndex = (uint8_t)faad_getbits(ld, 5
- DEBUGVAR(1,7,"parse_audio_decoder_specific_info(): ObjectTypeIndex"));
- }
-#endif
-
- /* get GASpecificConfig */
- if (mp4ASC->objectTypeIndex == 1 || mp4ASC->objectTypeIndex == 2 ||
- mp4ASC->objectTypeIndex == 3 || mp4ASC->objectTypeIndex == 4 ||
- mp4ASC->objectTypeIndex == 6 || mp4ASC->objectTypeIndex == 7)
- {
- result = GASpecificConfig(ld, mp4ASC, pce);
-
-#ifdef ERROR_RESILIENCE
- } else if (mp4ASC->objectTypeIndex >= ER_OBJECT_START) { /* ER */
- result = GASpecificConfig(ld, mp4ASC, pce);
- mp4ASC->epConfig = (uint8_t)faad_getbits(ld, 2
- DEBUGVAR(1,143,"parse_audio_decoder_specific_info(): epConfig"));
-
- if (mp4ASC->epConfig != 0)
- result = -5;
-#endif
-
- } else {
- result = -4;
- }
-
-#ifdef SSR_DEC
- /* shorter frames not allowed for SSR */
- if ((mp4ASC->objectTypeIndex == 4) && mp4ASC->frameLengthFlag)
- return -6;
-#endif
-
-
-#ifdef SBR_DEC
- if(short_form)
- bits_to_decode = 0;
- else
- bits_to_decode = (int8_t)(buffer_size*8 - (startpos-faad_get_processed_bits(ld)));
-
- if ((mp4ASC->objectTypeIndex != 5) && (bits_to_decode >= 16))
- {
- int16_t syncExtensionType = (int16_t)faad_getbits(ld, 11
- DEBUGVAR(1,9,"parse_audio_decoder_specific_info(): syncExtensionType"));
-
- if (syncExtensionType == 0x2b7)
- {
- uint8_t tmp_OTi = (uint8_t)faad_getbits(ld, 5
- DEBUGVAR(1,10,"parse_audio_decoder_specific_info(): extensionAudioObjectType"));
-
- if (tmp_OTi == 5)
- {
- mp4ASC->sbr_present_flag = (uint8_t)faad_get1bit(ld
- DEBUGVAR(1,11,"parse_audio_decoder_specific_info(): sbr_present_flag"));
-
- if (mp4ASC->sbr_present_flag)
- {
- uint8_t tmp;
-
- /* Don't set OT to SBR until checked that it is actually there */
- mp4ASC->objectTypeIndex = tmp_OTi;
-
- tmp = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,12,"parse_audio_decoder_specific_info(): extensionSamplingFrequencyIndex"));
-
- /* check for downsampled SBR */
- if (tmp == mp4ASC->samplingFrequencyIndex)
- mp4ASC->downSampledSBR = 1;
- mp4ASC->samplingFrequencyIndex = tmp;
-
- if (mp4ASC->samplingFrequencyIndex == 15)
- {
- mp4ASC->samplingFrequency = (uint32_t)faad_getbits(ld, 24
- DEBUGVAR(1,13,"parse_audio_decoder_specific_info(): extensionSamplingFrequencyIndex"));
- } else {
- mp4ASC->samplingFrequency = get_sample_rate(mp4ASC->samplingFrequencyIndex);
- }
- }
- }
- }
- }
-
- /* no SBR signalled, this could mean either implicit signalling or no SBR in this file */
- /* MPEG specification states: assume SBR on files with samplerate <= 24000 Hz */
- if (mp4ASC->sbr_present_flag == -1)
- {
- if (mp4ASC->samplingFrequency <= 24000)
- {
- mp4ASC->samplingFrequency *= 2;
- mp4ASC->forceUpSampling = 1;
- } else /* > 24000*/ {
- mp4ASC->downSampledSBR = 1;
- }
- }
-#endif
-
- faad_endbits(ld);
-
- return result;
-}
-
-int8_t AudioSpecificConfig2(uint8_t *pBuffer,
- uint32_t buffer_size,
- mp4AudioSpecificConfig *mp4ASC,
- program_config *pce,
- uint8_t short_form)
-{
- uint8_t ret = 0;
- bitfile ld;
- faad_initbits(&ld, pBuffer, buffer_size);
- faad_byte_align(&ld);
- ret = AudioSpecificConfigFromBitfile(&ld, mp4ASC, pce, buffer_size, short_form);
- faad_endbits(&ld);
- return ret;
-}
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