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diff --git a/faad2/src/libfaad/syntax.c b/faad2/src/libfaad/syntax.c
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-/*
-** 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: syntax.c,v 1.93 2009/01/26 23:51:15 menno Exp $
-**/
-
-/*
- Reads the AAC bitstream as defined in 14496-3 (MPEG-4 Audio)
-*/
-
-#include "common.h"
-#include "structs.h"
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-
-#include "syntax.h"
-#include "specrec.h"
-#include "huffman.h"
-#include "bits.h"
-#include "pulse.h"
-#include "analysis.h"
-#include "drc.h"
-#ifdef ERROR_RESILIENCE
-#include "rvlc.h"
-#endif
-#ifdef SBR_DEC
-#include "sbr_syntax.h"
-#endif
-#include "mp4.h"
-
-
-/* static function declarations */
-static void decode_sce_lfe(NeAACDecStruct *hDecoder, NeAACDecFrameInfo *hInfo, bitfile *ld,
- uint8_t id_syn_ele);
-static void decode_cpe(NeAACDecStruct *hDecoder, NeAACDecFrameInfo *hInfo, bitfile *ld,
- uint8_t id_syn_ele);
-static uint8_t single_lfe_channel_element(NeAACDecStruct *hDecoder, bitfile *ld,
- uint8_t channel, uint8_t *tag);
-static uint8_t channel_pair_element(NeAACDecStruct *hDecoder, bitfile *ld,
- uint8_t channel, uint8_t *tag);
-#ifdef COUPLING_DEC
-static uint8_t coupling_channel_element(NeAACDecStruct *hDecoder, bitfile *ld);
-#endif
-static uint16_t data_stream_element(NeAACDecStruct *hDecoder, bitfile *ld);
-static uint8_t program_config_element(program_config *pce, bitfile *ld);
-static uint8_t fill_element(NeAACDecStruct *hDecoder, bitfile *ld, drc_info *drc
-#ifdef SBR_DEC
- ,uint8_t sbr_ele
-#endif
- );
-static uint8_t individual_channel_stream(NeAACDecStruct *hDecoder, element *ele,
- bitfile *ld, ic_stream *ics, uint8_t scal_flag,
- int16_t *spec_data);
-static uint8_t ics_info(NeAACDecStruct *hDecoder, ic_stream *ics, bitfile *ld,
- uint8_t common_window);
-static uint8_t section_data(NeAACDecStruct *hDecoder, ic_stream *ics, bitfile *ld);
-static uint8_t scale_factor_data(NeAACDecStruct *hDecoder, ic_stream *ics, bitfile *ld);
-#ifdef SSR_DEC
-static void gain_control_data(bitfile *ld, ic_stream *ics);
-#endif
-static uint8_t spectral_data(NeAACDecStruct *hDecoder, ic_stream *ics, bitfile *ld,
- int16_t *spectral_data);
-static uint16_t extension_payload(bitfile *ld, drc_info *drc, uint16_t count);
-static uint8_t pulse_data(ic_stream *ics, pulse_info *pul, bitfile *ld);
-static void tns_data(ic_stream *ics, tns_info *tns, bitfile *ld);
-#ifdef LTP_DEC
-static uint8_t ltp_data(NeAACDecStruct *hDecoder, ic_stream *ics, ltp_info *ltp, bitfile *ld);
-#endif
-static uint8_t adts_fixed_header(adts_header *adts, bitfile *ld);
-static void adts_variable_header(adts_header *adts, bitfile *ld);
-static void adts_error_check(adts_header *adts, bitfile *ld);
-static uint8_t dynamic_range_info(bitfile *ld, drc_info *drc);
-static uint8_t excluded_channels(bitfile *ld, drc_info *drc);
-static uint8_t side_info(NeAACDecStruct *hDecoder, element *ele,
- bitfile *ld, ic_stream *ics, uint8_t scal_flag);
-#ifdef DRM
-static int8_t DRM_aac_scalable_main_header(NeAACDecStruct *hDecoder, ic_stream *ics1, ic_stream *ics2,
- bitfile *ld, uint8_t this_layer_stereo);
-#endif
-
-
-/* Table 4.4.1 */
-int8_t GASpecificConfig(bitfile *ld, mp4AudioSpecificConfig *mp4ASC,
- program_config *pce_out)
-{
- program_config pce;
-
- /* 1024 or 960 */
- mp4ASC->frameLengthFlag = faad_get1bit(ld
- DEBUGVAR(1,138,"GASpecificConfig(): FrameLengthFlag"));
-#ifndef ALLOW_SMALL_FRAMELENGTH
- if (mp4ASC->frameLengthFlag == 1)
- return -3;
-#endif
-
- mp4ASC->dependsOnCoreCoder = faad_get1bit(ld
- DEBUGVAR(1,139,"GASpecificConfig(): DependsOnCoreCoder"));
- if (mp4ASC->dependsOnCoreCoder == 1)
- {
- mp4ASC->coreCoderDelay = (uint16_t)faad_getbits(ld, 14
- DEBUGVAR(1,140,"GASpecificConfig(): CoreCoderDelay"));
- }
-
- mp4ASC->extensionFlag = faad_get1bit(ld DEBUGVAR(1,141,"GASpecificConfig(): ExtensionFlag"));
- if (mp4ASC->channelsConfiguration == 0)
- {
- if (program_config_element(&pce, ld))
- return -3;
- //mp4ASC->channelsConfiguration = pce.channels;
-
- if (pce_out != NULL)
- memcpy(pce_out, &pce, sizeof(program_config));
-
- /*
- if (pce.num_valid_cc_elements)
- return -3;
- */
- }
-
-#ifdef ERROR_RESILIENCE
- if (mp4ASC->extensionFlag == 1)
- {
- /* Error resilience not supported yet */
- if (mp4ASC->objectTypeIndex >= ER_OBJECT_START)
- {
- mp4ASC->aacSectionDataResilienceFlag = faad_get1bit(ld
- DEBUGVAR(1,144,"GASpecificConfig(): aacSectionDataResilienceFlag"));
- mp4ASC->aacScalefactorDataResilienceFlag = faad_get1bit(ld
- DEBUGVAR(1,145,"GASpecificConfig(): aacScalefactorDataResilienceFlag"));
- mp4ASC->aacSpectralDataResilienceFlag = faad_get1bit(ld
- DEBUGVAR(1,146,"GASpecificConfig(): aacSpectralDataResilienceFlag"));
- }
- /* 1 bit: extensionFlag3 */
- faad_getbits(ld, 1);
- }
-#endif
-
- return 0;
-}
-
-/* Table 4.4.2 */
-/* An MPEG-4 Audio decoder is only required to follow the Program
- Configuration Element in GASpecificConfig(). The decoder shall ignore
- any Program Configuration Elements that may occur in raw data blocks.
- PCEs transmitted in raw data blocks cannot be used to convey decoder
- configuration information.
-*/
-static uint8_t program_config_element(program_config *pce, bitfile *ld)
-{
- uint8_t i;
-
- memset(pce, 0, sizeof(program_config));
-
- pce->channels = 0;
-
- pce->element_instance_tag = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,10,"program_config_element(): element_instance_tag"));
-
- pce->object_type = (uint8_t)faad_getbits(ld, 2
- DEBUGVAR(1,11,"program_config_element(): object_type"));
- pce->sf_index = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,12,"program_config_element(): sf_index"));
- pce->num_front_channel_elements = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,13,"program_config_element(): num_front_channel_elements"));
- pce->num_side_channel_elements = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,14,"program_config_element(): num_side_channel_elements"));
- pce->num_back_channel_elements = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,15,"program_config_element(): num_back_channel_elements"));
- pce->num_lfe_channel_elements = (uint8_t)faad_getbits(ld, 2
- DEBUGVAR(1,16,"program_config_element(): num_lfe_channel_elements"));
- pce->num_assoc_data_elements = (uint8_t)faad_getbits(ld, 3
- DEBUGVAR(1,17,"program_config_element(): num_assoc_data_elements"));
- pce->num_valid_cc_elements = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,18,"program_config_element(): num_valid_cc_elements"));
-
- pce->mono_mixdown_present = faad_get1bit(ld
- DEBUGVAR(1,19,"program_config_element(): mono_mixdown_present"));
- if (pce->mono_mixdown_present == 1)
- {
- pce->mono_mixdown_element_number = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,20,"program_config_element(): mono_mixdown_element_number"));
- }
-
- pce->stereo_mixdown_present = faad_get1bit(ld
- DEBUGVAR(1,21,"program_config_element(): stereo_mixdown_present"));
- if (pce->stereo_mixdown_present == 1)
- {
- pce->stereo_mixdown_element_number = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,22,"program_config_element(): stereo_mixdown_element_number"));
- }
-
- pce->matrix_mixdown_idx_present = faad_get1bit(ld
- DEBUGVAR(1,23,"program_config_element(): matrix_mixdown_idx_present"));
- if (pce->matrix_mixdown_idx_present == 1)
- {
- pce->matrix_mixdown_idx = (uint8_t)faad_getbits(ld, 2
- DEBUGVAR(1,24,"program_config_element(): matrix_mixdown_idx"));
- pce->pseudo_surround_enable = faad_get1bit(ld
- DEBUGVAR(1,25,"program_config_element(): pseudo_surround_enable"));
- }
-
- for (i = 0; i < pce->num_front_channel_elements; i++)
- {
- pce->front_element_is_cpe[i] = faad_get1bit(ld
- DEBUGVAR(1,26,"program_config_element(): front_element_is_cpe"));
- pce->front_element_tag_select[i] = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,27,"program_config_element(): front_element_tag_select"));
-
- if (pce->front_element_is_cpe[i] & 1)
- {
- pce->cpe_channel[pce->front_element_tag_select[i]] = pce->channels;
- pce->num_front_channels += 2;
- pce->channels += 2;
- } else {
- pce->sce_channel[pce->front_element_tag_select[i]] = pce->channels;
- pce->num_front_channels++;
- pce->channels++;
- }
- }
-
- for (i = 0; i < pce->num_side_channel_elements; i++)
- {
- pce->side_element_is_cpe[i] = faad_get1bit(ld
- DEBUGVAR(1,28,"program_config_element(): side_element_is_cpe"));
- pce->side_element_tag_select[i] = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,29,"program_config_element(): side_element_tag_select"));
-
- if (pce->side_element_is_cpe[i] & 1)
- {
- pce->cpe_channel[pce->side_element_tag_select[i]] = pce->channels;
- pce->num_side_channels += 2;
- pce->channels += 2;
- } else {
- pce->sce_channel[pce->side_element_tag_select[i]] = pce->channels;
- pce->num_side_channels++;
- pce->channels++;
- }
- }
-
- for (i = 0; i < pce->num_back_channel_elements; i++)
- {
- pce->back_element_is_cpe[i] = faad_get1bit(ld
- DEBUGVAR(1,30,"program_config_element(): back_element_is_cpe"));
- pce->back_element_tag_select[i] = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,31,"program_config_element(): back_element_tag_select"));
-
- if (pce->back_element_is_cpe[i] & 1)
- {
- pce->cpe_channel[pce->back_element_tag_select[i]] = pce->channels;
- pce->channels += 2;
- pce->num_back_channels += 2;
- } else {
- pce->sce_channel[pce->back_element_tag_select[i]] = pce->channels;
- pce->num_back_channels++;
- pce->channels++;
- }
- }
-
- for (i = 0; i < pce->num_lfe_channel_elements; i++)
- {
- pce->lfe_element_tag_select[i] = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,32,"program_config_element(): lfe_element_tag_select"));
-
- pce->sce_channel[pce->lfe_element_tag_select[i]] = pce->channels;
- pce->num_lfe_channels++;
- pce->channels++;
- }
-
- for (i = 0; i < pce->num_assoc_data_elements; i++)
- pce->assoc_data_element_tag_select[i] = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,33,"program_config_element(): assoc_data_element_tag_select"));
-
- for (i = 0; i < pce->num_valid_cc_elements; i++)
- {
- pce->cc_element_is_ind_sw[i] = faad_get1bit(ld
- DEBUGVAR(1,34,"program_config_element(): cc_element_is_ind_sw"));
- pce->valid_cc_element_tag_select[i] = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,35,"program_config_element(): valid_cc_element_tag_select"));
- }
-
- faad_byte_align(ld);
-
- pce->comment_field_bytes = (uint8_t)faad_getbits(ld, 8
- DEBUGVAR(1,36,"program_config_element(): comment_field_bytes"));
-
- for (i = 0; i < pce->comment_field_bytes; i++)
- {
- pce->comment_field_data[i] = (uint8_t)faad_getbits(ld, 8
- DEBUGVAR(1,37,"program_config_element(): comment_field_data"));
- }
- pce->comment_field_data[i] = 0;
-
- if (pce->channels > MAX_CHANNELS)
- return 22;
-
- return 0;
-}
-
-static void decode_sce_lfe(NeAACDecStruct *hDecoder,
- NeAACDecFrameInfo *hInfo, bitfile *ld,
- uint8_t id_syn_ele)
-{
- uint8_t channels = hDecoder->fr_channels;
- uint8_t tag = 0;
-
- if (channels+1 > MAX_CHANNELS)
- {
- hInfo->error = 12;
- return;
- }
- if (hDecoder->fr_ch_ele+1 > MAX_SYNTAX_ELEMENTS)
- {
- hInfo->error = 13;
- return;
- }
-
- /* for SCE hDecoder->element_output_channels[] is not set here because this
- can become 2 when some form of Parametric Stereo coding is used
- */
-
- /* save the syntax element id */
- hDecoder->element_id[hDecoder->fr_ch_ele] = id_syn_ele;
-
- /* decode the element */
- hInfo->error = single_lfe_channel_element(hDecoder, ld, channels, &tag);
-
- /* map output channels position to internal data channels */
- if (hDecoder->element_output_channels[hDecoder->fr_ch_ele] == 2)
- {
- /* this might be faulty when pce_set is true */
- hDecoder->internal_channel[channels] = channels;
- hDecoder->internal_channel[channels+1] = channels+1;
- } else {
- if (hDecoder->pce_set)
- hDecoder->internal_channel[hDecoder->pce.sce_channel[tag]] = channels;
- else
- hDecoder->internal_channel[channels] = channels;
- }
-
- hDecoder->fr_channels += hDecoder->element_output_channels[hDecoder->fr_ch_ele];
- hDecoder->fr_ch_ele++;
-}
-
-static void decode_cpe(NeAACDecStruct *hDecoder, NeAACDecFrameInfo *hInfo, bitfile *ld,
- uint8_t id_syn_ele)
-{
- uint8_t channels = hDecoder->fr_channels;
- uint8_t tag = 0;
-
- if (channels+2 > MAX_CHANNELS)
- {
- hInfo->error = 12;
- return;
- }
- if (hDecoder->fr_ch_ele+1 > MAX_SYNTAX_ELEMENTS)
- {
- hInfo->error = 13;
- return;
- }
-
- /* for CPE the number of output channels is always 2 */
- if (hDecoder->element_output_channels[hDecoder->fr_ch_ele] == 0)
- {
- /* element_output_channels not set yet */
- hDecoder->element_output_channels[hDecoder->fr_ch_ele] = 2;
- } else if (hDecoder->element_output_channels[hDecoder->fr_ch_ele] != 2) {
- /* element inconsistency */
- hInfo->error = 21;
- return;
- }
-
- /* save the syntax element id */
- hDecoder->element_id[hDecoder->fr_ch_ele] = id_syn_ele;
-
- /* decode the element */
- hInfo->error = channel_pair_element(hDecoder, ld, channels, &tag);
-
- /* map output channel position to internal data channels */
- if (hDecoder->pce_set)
- {
- hDecoder->internal_channel[hDecoder->pce.cpe_channel[tag]] = channels;
- hDecoder->internal_channel[hDecoder->pce.cpe_channel[tag]+1] = channels+1;
- } else {
- hDecoder->internal_channel[channels] = channels;
- hDecoder->internal_channel[channels+1] = channels+1;
- }
-
- hDecoder->fr_channels += 2;
- hDecoder->fr_ch_ele++;
-}
-
-void raw_data_block(NeAACDecStruct *hDecoder, NeAACDecFrameInfo *hInfo,
- bitfile *ld, program_config *pce, drc_info *drc)
-{
- uint8_t id_syn_ele;
- uint8_t ele_this_frame = 0;
-
- hDecoder->fr_channels = 0;
- hDecoder->fr_ch_ele = 0;
- hDecoder->first_syn_ele = 25;
- hDecoder->has_lfe = 0;
-
-#ifdef ERROR_RESILIENCE
- if (hDecoder->object_type < ER_OBJECT_START)
- {
-#endif
- /* Table 4.4.3: raw_data_block() */
- while ((id_syn_ele = (uint8_t)faad_getbits(ld, LEN_SE_ID
- DEBUGVAR(1,4,"NeAACDecDecode(): id_syn_ele"))) != ID_END)
- {
- switch (id_syn_ele) {
- case ID_SCE:
- ele_this_frame++;
- if (hDecoder->first_syn_ele == 25) hDecoder->first_syn_ele = id_syn_ele;
- decode_sce_lfe(hDecoder, hInfo, ld, id_syn_ele);
- if (hInfo->error > 0)
- return;
- break;
- case ID_CPE:
- ele_this_frame++;
- if (hDecoder->first_syn_ele == 25) hDecoder->first_syn_ele = id_syn_ele;
- decode_cpe(hDecoder, hInfo, ld, id_syn_ele);
- if (hInfo->error > 0)
- return;
- break;
- case ID_LFE:
-#ifdef DRM
- hInfo->error = 32;
-#else
- ele_this_frame++;
- hDecoder->has_lfe++;
- decode_sce_lfe(hDecoder, hInfo, ld, id_syn_ele);
-#endif
- if (hInfo->error > 0)
- return;
- break;
- case ID_CCE: /* not implemented yet, but skip the bits */
-#ifdef DRM
- hInfo->error = 32;
-#else
- ele_this_frame++;
-#ifdef COUPLING_DEC
- hInfo->error = coupling_channel_element(hDecoder, ld);
-#else
- hInfo->error = 6;
-#endif
-#endif
- if (hInfo->error > 0)
- return;
- break;
- case ID_DSE:
- ele_this_frame++;
- data_stream_element(hDecoder, ld);
- break;
- case ID_PCE:
- if (ele_this_frame != 0)
- {
- hInfo->error = 31;
- return;
- }
- ele_this_frame++;
- /* 14496-4: 5.6.4.1.2.1.3: */
- /* program_configuration_element()'s in access units shall be ignored */
- program_config_element(pce, ld);
- //if ((hInfo->error = program_config_element(pce, ld)) > 0)
- // return;
- //hDecoder->pce_set = 1;
- break;
- case ID_FIL:
- ele_this_frame++;
- /* one sbr_info describes a channel_element not a channel! */
- /* if we encounter SBR data here: error */
- /* SBR data will be read directly in the SCE/LFE/CPE element */
- if ((hInfo->error = fill_element(hDecoder, ld, drc
-#ifdef SBR_DEC
- , INVALID_SBR_ELEMENT
-#endif
- )) > 0)
- return;
- break;
- }
- }
-#ifdef ERROR_RESILIENCE
- } else {
- /* Table 262: er_raw_data_block() */
- switch (hDecoder->channelConfiguration)
- {
- case 1:
- decode_sce_lfe(hDecoder, hInfo, ld, ID_SCE);
- if (hInfo->error > 0)
- return;
- break;
- case 2:
- decode_cpe(hDecoder, hInfo, ld, ID_CPE);
- if (hInfo->error > 0)
- return;
- break;
- case 3:
- decode_sce_lfe(hDecoder, hInfo, ld, ID_SCE);
- decode_cpe(hDecoder, hInfo, ld, ID_CPE);
- if (hInfo->error > 0)
- return;
- break;
- case 4:
- decode_sce_lfe(hDecoder, hInfo, ld, ID_SCE);
- decode_cpe(hDecoder, hInfo, ld, ID_CPE);
- decode_sce_lfe(hDecoder, hInfo, ld, ID_SCE);
- if (hInfo->error > 0)
- return;
- break;
- case 5:
- decode_sce_lfe(hDecoder, hInfo, ld, ID_SCE);
- decode_cpe(hDecoder, hInfo, ld, ID_CPE);
- decode_cpe(hDecoder, hInfo, ld, ID_CPE);
- if (hInfo->error > 0)
- return;
- break;
- case 6:
- decode_sce_lfe(hDecoder, hInfo, ld, ID_SCE);
- decode_cpe(hDecoder, hInfo, ld, ID_CPE);
- decode_cpe(hDecoder, hInfo, ld, ID_CPE);
- decode_sce_lfe(hDecoder, hInfo, ld, ID_LFE);
- if (hInfo->error > 0)
- return;
- break;
- case 7: /* 8 channels */
- decode_sce_lfe(hDecoder, hInfo, ld, ID_SCE);
- decode_cpe(hDecoder, hInfo, ld, ID_CPE);
- decode_cpe(hDecoder, hInfo, ld, ID_CPE);
- decode_cpe(hDecoder, hInfo, ld, ID_CPE);
- decode_sce_lfe(hDecoder, hInfo, ld, ID_LFE);
- if (hInfo->error > 0)
- return;
- break;
- default:
- hInfo->error = 7;
- return;
- }
-#if 0
- cnt = bits_to_decode() / 8;
- while (cnt >= 1)
- {
- cnt -= extension_payload(cnt);
- }
-#endif
- }
-#endif
-
- /* new in corrigendum 14496-3:2002 */
-#ifdef DRM
- if (hDecoder->object_type != DRM_ER_LC
-#if 0
- && !hDecoder->latm_header_present
-#endif
- )
-#endif
- {
- faad_byte_align(ld);
- }
-
- return;
-}
-
-/* Table 4.4.4 and */
-/* Table 4.4.9 */
-static uint8_t single_lfe_channel_element(NeAACDecStruct *hDecoder, bitfile *ld,
- uint8_t channel, uint8_t *tag)
-{
- uint8_t retval = 0;
- element sce = {0};
- ic_stream *ics = &(sce.ics1);
- ALIGN int16_t spec_data[1024] = {0};
-
- sce.element_instance_tag = (uint8_t)faad_getbits(ld, LEN_TAG
- DEBUGVAR(1,38,"single_lfe_channel_element(): element_instance_tag"));
-
- *tag = sce.element_instance_tag;
- sce.channel = channel;
- sce.paired_channel = -1;
-
- retval = individual_channel_stream(hDecoder, &sce, ld, ics, 0, spec_data);
- if (retval > 0)
- return retval;
-
- /* IS not allowed in single channel */
- if (ics->is_used)
- return 32;
-
-#ifdef SBR_DEC
- /* check if next bitstream element is a fill element */
- /* if so, read it now so SBR decoding can be done in case of a file with SBR */
- if (faad_showbits(ld, LEN_SE_ID) == ID_FIL)
- {
- faad_flushbits(ld, LEN_SE_ID);
-
- /* one sbr_info describes a channel_element not a channel! */
- if ((retval = fill_element(hDecoder, ld, hDecoder->drc, hDecoder->fr_ch_ele)) > 0)
- {
- return retval;
- }
- }
-#endif
-
- /* noiseless coding is done, spectral reconstruction is done now */
- retval = reconstruct_single_channel(hDecoder, ics, &sce, spec_data);
- if (retval > 0)
- return retval;
-
- return 0;
-}
-
-/* Table 4.4.5 */
-static uint8_t channel_pair_element(NeAACDecStruct *hDecoder, bitfile *ld,
- uint8_t channels, uint8_t *tag)
-{
- ALIGN int16_t spec_data1[1024] = {0};
- ALIGN int16_t spec_data2[1024] = {0};
- element cpe = {0};
- ic_stream *ics1 = &(cpe.ics1);
- ic_stream *ics2 = &(cpe.ics2);
- uint8_t result;
-
- cpe.channel = channels;
- cpe.paired_channel = channels+1;
-
- cpe.element_instance_tag = (uint8_t)faad_getbits(ld, LEN_TAG
- DEBUGVAR(1,39,"channel_pair_element(): element_instance_tag"));
- *tag = cpe.element_instance_tag;
-
- if ((cpe.common_window = faad_get1bit(ld
- DEBUGVAR(1,40,"channel_pair_element(): common_window"))) & 1)
- {
- /* both channels have common ics information */
- if ((result = ics_info(hDecoder, ics1, ld, cpe.common_window)) > 0)
- return result;
-
- ics1->ms_mask_present = (uint8_t)faad_getbits(ld, 2
- DEBUGVAR(1,41,"channel_pair_element(): ms_mask_present"));
- if (ics1->ms_mask_present == 3)
- {
- /* bitstream error */
- return 32;
- }
- if (ics1->ms_mask_present == 1)
- {
- uint8_t g, sfb;
- for (g = 0; g < ics1->num_window_groups; g++)
- {
- for (sfb = 0; sfb < ics1->max_sfb; sfb++)
- {
- ics1->ms_used[g][sfb] = faad_get1bit(ld
- DEBUGVAR(1,42,"channel_pair_element(): faad_get1bit"));
- }
- }
- }
-
-#ifdef ERROR_RESILIENCE
- if ((hDecoder->object_type >= ER_OBJECT_START) && (ics1->predictor_data_present))
- {
- if ((
-#ifdef LTP_DEC
- ics1->ltp.data_present =
-#endif
- faad_get1bit(ld DEBUGVAR(1,50,"channel_pair_element(): ltp.data_present"))) & 1)
- {
-#ifdef LTP_DEC
- if ((result = ltp_data(hDecoder, ics1, &(ics1->ltp), ld)) > 0)
- {
- return result;
- }
-#else
- return 26;
-#endif
- }
- }
-#endif
-
- memcpy(ics2, ics1, sizeof(ic_stream));
- } else {
- ics1->ms_mask_present = 0;
- }
-
- if ((result = individual_channel_stream(hDecoder, &cpe, ld, ics1,
- 0, spec_data1)) > 0)
- {
- return result;
- }
-
-#ifdef ERROR_RESILIENCE
- if (cpe.common_window && (hDecoder->object_type >= ER_OBJECT_START) &&
- (ics1->predictor_data_present))
- {
- if ((
-#ifdef LTP_DEC
- ics1->ltp2.data_present =
-#endif
- faad_get1bit(ld DEBUGVAR(1,50,"channel_pair_element(): ltp.data_present"))) & 1)
- {
-#ifdef LTP_DEC
- if ((result = ltp_data(hDecoder, ics1, &(ics1->ltp2), ld)) > 0)
- {
- return result;
- }
-#else
- return 26;
-#endif
- }
- }
-#endif
-
- if ((result = individual_channel_stream(hDecoder, &cpe, ld, ics2,
- 0, spec_data2)) > 0)
- {
- return result;
- }
-
-#ifdef SBR_DEC
- /* check if next bitstream element is a fill element */
- /* if so, read it now so SBR decoding can be done in case of a file with SBR */
- if (faad_showbits(ld, LEN_SE_ID) == ID_FIL)
- {
- faad_flushbits(ld, LEN_SE_ID);
-
- /* one sbr_info describes a channel_element not a channel! */
- if ((result = fill_element(hDecoder, ld, hDecoder->drc, hDecoder->fr_ch_ele)) > 0)
- {
- return result;
- }
- }
-#endif
-
- /* noiseless coding is done, spectral reconstruction is done now */
- if ((result = reconstruct_channel_pair(hDecoder, ics1, ics2, &cpe,
- spec_data1, spec_data2)) > 0)
- {
- return result;
- }
-
- return 0;
-}
-
-/* Table 4.4.6 */
-static uint8_t ics_info(NeAACDecStruct *hDecoder, ic_stream *ics, bitfile *ld,
- uint8_t common_window)
-{
- uint8_t retval = 0;
- uint8_t ics_reserved_bit;
-
- ics_reserved_bit = faad_get1bit(ld
- DEBUGVAR(1,43,"ics_info(): ics_reserved_bit"));
- if (ics_reserved_bit != 0)
- return 32;
- ics->window_sequence = (uint8_t)faad_getbits(ld, 2
- DEBUGVAR(1,44,"ics_info(): window_sequence"));
- ics->window_shape = faad_get1bit(ld
- DEBUGVAR(1,45,"ics_info(): window_shape"));
-
-#ifdef LD_DEC
- /* No block switching in LD */
- if ((hDecoder->object_type == LD) && (ics->window_sequence != ONLY_LONG_SEQUENCE))
- return 32;
-#endif
-
- if (ics->window_sequence == EIGHT_SHORT_SEQUENCE)
- {
- ics->max_sfb = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,46,"ics_info(): max_sfb (short)"));
- ics->scale_factor_grouping = (uint8_t)faad_getbits(ld, 7
- DEBUGVAR(1,47,"ics_info(): scale_factor_grouping"));
- } else {
- ics->max_sfb = (uint8_t)faad_getbits(ld, 6
- DEBUGVAR(1,48,"ics_info(): max_sfb (long)"));
- }
-
- /* get the grouping information */
- if ((retval = window_grouping_info(hDecoder, ics)) > 0)
- return retval;
-
-
- /* should be an error */
- /* check the range of max_sfb */
- if (ics->max_sfb > ics->num_swb)
- return 16;
-
- if (ics->window_sequence != EIGHT_SHORT_SEQUENCE)
- {
- if ((ics->predictor_data_present = faad_get1bit(ld
- DEBUGVAR(1,49,"ics_info(): predictor_data_present"))) & 1)
- {
- if (hDecoder->object_type == MAIN) /* MPEG2 style AAC predictor */
- {
- uint8_t sfb;
-
- uint8_t limit = min(ics->max_sfb, max_pred_sfb(hDecoder->sf_index));
-#ifdef MAIN_DEC
- ics->pred.limit = limit;
-#endif
-
- if ((
-#ifdef MAIN_DEC
- ics->pred.predictor_reset =
-#endif
- faad_get1bit(ld DEBUGVAR(1,53,"ics_info(): pred.predictor_reset"))) & 1)
- {
-#ifdef MAIN_DEC
- ics->pred.predictor_reset_group_number =
-#endif
- (uint8_t)faad_getbits(ld, 5 DEBUGVAR(1,54,"ics_info(): pred.predictor_reset_group_number"));
- }
-
- for (sfb = 0; sfb < limit; sfb++)
- {
-#ifdef MAIN_DEC
- ics->pred.prediction_used[sfb] =
-#endif
- faad_get1bit(ld DEBUGVAR(1,55,"ics_info(): pred.prediction_used"));
- }
- }
-#ifdef LTP_DEC
- else { /* Long Term Prediction */
- if (hDecoder->object_type < ER_OBJECT_START)
- {
- if ((ics->ltp.data_present = faad_get1bit(ld
- DEBUGVAR(1,50,"ics_info(): ltp.data_present"))) & 1)
- {
- if ((retval = ltp_data(hDecoder, ics, &(ics->ltp), ld)) > 0)
- {
- return retval;
- }
- }
- if (common_window)
- {
- if ((ics->ltp2.data_present = faad_get1bit(ld
- DEBUGVAR(1,51,"ics_info(): ltp2.data_present"))) & 1)
- {
- if ((retval = ltp_data(hDecoder, ics, &(ics->ltp2), ld)) > 0)
- {
- return retval;
- }
- }
- }
- }
-#ifdef ERROR_RESILIENCE
- if (!common_window && (hDecoder->object_type >= ER_OBJECT_START))
- {
- if ((ics->ltp.data_present = faad_get1bit(ld
- DEBUGVAR(1,50,"ics_info(): ltp.data_present"))) & 1)
- {
- ltp_data(hDecoder, ics, &(ics->ltp), ld);
- }
- }
-#endif
- }
-#endif
- }
- }
-
- return retval;
-}
-
-/* Table 4.4.7 */
-static uint8_t pulse_data(ic_stream *ics, pulse_info *pul, bitfile *ld)
-{
- uint8_t i;
-
- pul->number_pulse = (uint8_t)faad_getbits(ld, 2
- DEBUGVAR(1,56,"pulse_data(): number_pulse"));
- pul->pulse_start_sfb = (uint8_t)faad_getbits(ld, 6
- DEBUGVAR(1,57,"pulse_data(): pulse_start_sfb"));
-
- /* check the range of pulse_start_sfb */
- if (pul->pulse_start_sfb > ics->num_swb)
- return 16;
-
- for (i = 0; i < pul->number_pulse+1; i++)
- {
- pul->pulse_offset[i] = (uint8_t)faad_getbits(ld, 5
- DEBUGVAR(1,58,"pulse_data(): pulse_offset"));
-#if 0
- printf("%d\n", pul->pulse_offset[i]);
-#endif
- pul->pulse_amp[i] = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,59,"pulse_data(): pulse_amp"));
-#if 0
- printf("%d\n", pul->pulse_amp[i]);
-#endif
- }
-
- return 0;
-}
-
-#ifdef COUPLING_DEC
-/* Table 4.4.8: Currently just for skipping the bits... */
-static uint8_t coupling_channel_element(NeAACDecStruct *hDecoder, bitfile *ld)
-{
- uint8_t c, result = 0;
- uint8_t ind_sw_cce_flag = 0;
- uint8_t num_gain_element_lists = 0;
- uint8_t num_coupled_elements = 0;
-
- element el_empty = {0};
- ic_stream ics_empty = {0};
- int16_t sh_data[1024];
-
- c = faad_getbits(ld, LEN_TAG
- DEBUGVAR(1,900,"coupling_channel_element(): element_instance_tag"));
-
- ind_sw_cce_flag = faad_get1bit(ld
- DEBUGVAR(1,901,"coupling_channel_element(): ind_sw_cce_flag"));
- num_coupled_elements = faad_getbits(ld, 3
- DEBUGVAR(1,902,"coupling_channel_element(): num_coupled_elements"));
-
- for (c = 0; c < num_coupled_elements + 1; c++)
- {
- uint8_t cc_target_is_cpe, cc_target_tag_select;
-
- num_gain_element_lists++;
-
- cc_target_is_cpe = faad_get1bit(ld
- DEBUGVAR(1,903,"coupling_channel_element(): cc_target_is_cpe"));
- cc_target_tag_select = faad_getbits(ld, 4
- DEBUGVAR(1,904,"coupling_channel_element(): cc_target_tag_select"));
-
- if (cc_target_is_cpe)
- {
- uint8_t cc_l = faad_get1bit(ld
- DEBUGVAR(1,905,"coupling_channel_element(): cc_l"));
- uint8_t cc_r = faad_get1bit(ld
- DEBUGVAR(1,906,"coupling_channel_element(): cc_r"));
-
- if (cc_l && cc_r)
- num_gain_element_lists++;
- }
- }
-
- faad_get1bit(ld
- DEBUGVAR(1,907,"coupling_channel_element(): cc_domain"));
- faad_get1bit(ld
- DEBUGVAR(1,908,"coupling_channel_element(): gain_element_sign"));
- faad_getbits(ld, 2
- DEBUGVAR(1,909,"coupling_channel_element(): gain_element_scale"));
-
- if ((result = individual_channel_stream(hDecoder, &el_empty, ld, &ics_empty,
- 0, sh_data)) > 0)
- {
- return result;
- }
-
- /* IS not allowed in single channel */
- if (ics->is_used)
- return 32;
-
- for (c = 1; c < num_gain_element_lists; c++)
- {
- uint8_t cge;
-
- if (ind_sw_cce_flag)
- {
- cge = 1;
- } else {
- cge = faad_get1bit(ld
- DEBUGVAR(1,910,"coupling_channel_element(): common_gain_element_present"));
- }
-
- if (cge)
- {
- huffman_scale_factor(ld);
- } else {
- uint8_t g, sfb;
-
- for (g = 0; g < ics_empty.num_window_groups; g++)
- {
- for (sfb = 0; sfb < ics_empty.max_sfb; sfb++)
- {
- if (ics_empty.sfb_cb[g][sfb] != ZERO_HCB)
- huffman_scale_factor(ld);
- }
- }
- }
- }
-
- return 0;
-}
-#endif
-
-/* Table 4.4.10 */
-static uint16_t data_stream_element(NeAACDecStruct *hDecoder, bitfile *ld)
-{
- uint8_t byte_aligned;
- uint16_t i, count;
-
- /* element_instance_tag = */ faad_getbits(ld, LEN_TAG
- DEBUGVAR(1,60,"data_stream_element(): element_instance_tag"));
- byte_aligned = faad_get1bit(ld
- DEBUGVAR(1,61,"data_stream_element(): byte_aligned"));
- count = (uint16_t)faad_getbits(ld, 8
- DEBUGVAR(1,62,"data_stream_element(): count"));
- if (count == 255)
- {
- count += (uint16_t)faad_getbits(ld, 8
- DEBUGVAR(1,63,"data_stream_element(): extra count"));
- }
- if (byte_aligned)
- faad_byte_align(ld);
-
- for (i = 0; i < count; i++)
- {
- faad_getbits(ld, LEN_BYTE
- DEBUGVAR(1,64,"data_stream_element(): data_stream_byte"));
- }
-
- return count;
-}
-
-/* Table 4.4.11 */
-static uint8_t fill_element(NeAACDecStruct *hDecoder, bitfile *ld, drc_info *drc
-#ifdef SBR_DEC
- ,uint8_t sbr_ele
-#endif
- )
-{
- uint16_t count;
-#ifdef SBR_DEC
- uint8_t bs_extension_type;
-#endif
-
- count = (uint16_t)faad_getbits(ld, 4
- DEBUGVAR(1,65,"fill_element(): count"));
- if (count == 15)
- {
- count += (uint16_t)faad_getbits(ld, 8
- DEBUGVAR(1,66,"fill_element(): extra count")) - 1;
- }
-
- if (count > 0)
- {
-#ifdef SBR_DEC
- bs_extension_type = (uint8_t)faad_showbits(ld, 4);
-
- if ((bs_extension_type == EXT_SBR_DATA) ||
- (bs_extension_type == EXT_SBR_DATA_CRC))
- {
- if (sbr_ele == INVALID_SBR_ELEMENT)
- return 24;
-
- if (!hDecoder->sbr[sbr_ele])
- {
- hDecoder->sbr[sbr_ele] = sbrDecodeInit(hDecoder->frameLength,
- hDecoder->element_id[sbr_ele], 2*get_sample_rate(hDecoder->sf_index),
- hDecoder->downSampledSBR
-#ifdef DRM
- , 0
-#endif
- );
- }
-
- hDecoder->sbr_present_flag = 1;
-
- /* parse the SBR data */
- hDecoder->sbr[sbr_ele]->ret = sbr_extension_data(ld, hDecoder->sbr[sbr_ele], count,
- hDecoder->postSeekResetFlag);
-
-#if 0
- if (hDecoder->sbr[sbr_ele]->ret > 0)
- {
- printf("%s\n", NeAACDecGetErrorMessage(hDecoder->sbr[sbr_ele]->ret));
- }
-#endif
-
-#if (defined(PS_DEC) || defined(DRM_PS))
- if (hDecoder->sbr[sbr_ele]->ps_used)
- {
- hDecoder->ps_used[sbr_ele] = 1;
-
- /* set element independent flag to 1 as well */
- hDecoder->ps_used_global = 1;
- }
-#endif
- } else {
-#endif
-#ifndef DRM
- while (count > 0)
- {
- count -= extension_payload(ld, drc, count);
- }
-#else
- return 30;
-#endif
-#ifdef SBR_DEC
- }
-#endif
- }
-
- return 0;
-}
-
-/* Table 4.4.12 */
-#ifdef SSR_DEC
-static void gain_control_data(bitfile *ld, ic_stream *ics)
-{
- uint8_t bd, wd, ad;
- ssr_info *ssr = &(ics->ssr);
-
- ssr->max_band = (uint8_t)faad_getbits(ld, 2
- DEBUGVAR(1,1000,"gain_control_data(): max_band"));
-
- if (ics->window_sequence == ONLY_LONG_SEQUENCE)
- {
- for (bd = 1; bd <= ssr->max_band; bd++)
- {
- for (wd = 0; wd < 1; wd++)
- {
- ssr->adjust_num[bd][wd] = (uint8_t)faad_getbits(ld, 3
- DEBUGVAR(1,1001,"gain_control_data(): adjust_num"));
-
- for (ad = 0; ad < ssr->adjust_num[bd][wd]; ad++)
- {
- ssr->alevcode[bd][wd][ad] = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,1002,"gain_control_data(): alevcode"));
- ssr->aloccode[bd][wd][ad] = (uint8_t)faad_getbits(ld, 5
- DEBUGVAR(1,1003,"gain_control_data(): aloccode"));
- }
- }
- }
- } else if (ics->window_sequence == LONG_START_SEQUENCE) {
- for (bd = 1; bd <= ssr->max_band; bd++)
- {
- for (wd = 0; wd < 2; wd++)
- {
- ssr->adjust_num[bd][wd] = (uint8_t)faad_getbits(ld, 3
- DEBUGVAR(1,1001,"gain_control_data(): adjust_num"));
-
- for (ad = 0; ad < ssr->adjust_num[bd][wd]; ad++)
- {
- ssr->alevcode[bd][wd][ad] = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,1002,"gain_control_data(): alevcode"));
- if (wd == 0)
- {
- ssr->aloccode[bd][wd][ad] = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,1003,"gain_control_data(): aloccode"));
- } else {
- ssr->aloccode[bd][wd][ad] = (uint8_t)faad_getbits(ld, 2
- DEBUGVAR(1,1003,"gain_control_data(): aloccode"));
- }
- }
- }
- }
- } else if (ics->window_sequence == EIGHT_SHORT_SEQUENCE) {
- for (bd = 1; bd <= ssr->max_band; bd++)
- {
- for (wd = 0; wd < 8; wd++)
- {
- ssr->adjust_num[bd][wd] = (uint8_t)faad_getbits(ld, 3
- DEBUGVAR(1,1001,"gain_control_data(): adjust_num"));
-
- for (ad = 0; ad < ssr->adjust_num[bd][wd]; ad++)
- {
- ssr->alevcode[bd][wd][ad] = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,1002,"gain_control_data(): alevcode"));
- ssr->aloccode[bd][wd][ad] = (uint8_t)faad_getbits(ld, 2
- DEBUGVAR(1,1003,"gain_control_data(): aloccode"));
- }
- }
- }
- } else if (ics->window_sequence == LONG_STOP_SEQUENCE) {
- for (bd = 1; bd <= ssr->max_band; bd++)
- {
- for (wd = 0; wd < 2; wd++)
- {
- ssr->adjust_num[bd][wd] = (uint8_t)faad_getbits(ld, 3
- DEBUGVAR(1,1001,"gain_control_data(): adjust_num"));
-
- for (ad = 0; ad < ssr->adjust_num[bd][wd]; ad++)
- {
- ssr->alevcode[bd][wd][ad] = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,1002,"gain_control_data(): alevcode"));
-
- if (wd == 0)
- {
- ssr->aloccode[bd][wd][ad] = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,1003,"gain_control_data(): aloccode"));
- } else {
- ssr->aloccode[bd][wd][ad] = (uint8_t)faad_getbits(ld, 5
- DEBUGVAR(1,1003,"gain_control_data(): aloccode"));
- }
- }
- }
- }
- }
-}
-#endif
-
-#ifdef DRM
-/* Table 4.4.13 ASME */
-void DRM_aac_scalable_main_element(NeAACDecStruct *hDecoder, NeAACDecFrameInfo *hInfo,
- bitfile *ld, program_config *pce, drc_info *drc)
-{
- uint8_t retval = 0;
- uint8_t channels = hDecoder->fr_channels = 0;
- uint8_t ch;
- uint8_t this_layer_stereo = (hDecoder->channelConfiguration > 1) ? 1 : 0;
- element cpe = {0};
- ic_stream *ics1 = &(cpe.ics1);
- ic_stream *ics2 = &(cpe.ics2);
- int16_t *spec_data;
- ALIGN int16_t spec_data1[1024] = {0};
- ALIGN int16_t spec_data2[1024] = {0};
-
- hDecoder->fr_ch_ele = 0;
-
- hInfo->error = DRM_aac_scalable_main_header(hDecoder, ics1, ics2, ld, this_layer_stereo);
- if (hInfo->error > 0)
- return;
-
- cpe.common_window = 1;
- if (this_layer_stereo)
- {
- hDecoder->element_id[0] = ID_CPE;
- if (hDecoder->element_output_channels[hDecoder->fr_ch_ele] == 0)
- hDecoder->element_output_channels[hDecoder->fr_ch_ele] = 2;
- } else {
- hDecoder->element_id[0] = ID_SCE;
- }
-
- if (this_layer_stereo)
- {
- cpe.channel = 0;
- cpe.paired_channel = 1;
- }
-
-
- /* Stereo2 / Mono1 */
- ics1->tns_data_present = faad_get1bit(ld);
-
-#if defined(LTP_DEC)
- ics1->ltp.data_present = faad_get1bit(ld);
-#elif defined (DRM)
- if(faad_get1bit(ld)) {
- hInfo->error = 26;
- return;
- }
-#else
- faad_get1bit(ld);
-#endif
-
- hInfo->error = side_info(hDecoder, &cpe, ld, ics1, 1);
- if (hInfo->error > 0)
- return;
- if (this_layer_stereo)
- {
- /* Stereo3 */
- ics2->tns_data_present = faad_get1bit(ld);
-#ifdef LTP_DEC
- ics1->ltp.data_present =
-#endif
- faad_get1bit(ld);
- hInfo->error = side_info(hDecoder, &cpe, ld, ics2, 1);
- if (hInfo->error > 0)
- return;
- }
- /* Stereo4 / Mono2 */
- if (ics1->tns_data_present)
- tns_data(ics1, &(ics1->tns), ld);
- if (this_layer_stereo)
- {
- /* Stereo5 */
- if (ics2->tns_data_present)
- tns_data(ics2, &(ics2->tns), ld);
- }
-
-#ifdef DRM
- /* CRC check */
- if (hDecoder->object_type == DRM_ER_LC)
- {
- if ((hInfo->error = (uint8_t)faad_check_CRC(ld, (uint16_t)faad_get_processed_bits(ld) - 8)) > 0)
- return;
- }
-#endif
-
- /* Stereo6 / Mono3 */
- /* error resilient spectral data decoding */
- if ((hInfo->error = reordered_spectral_data(hDecoder, ics1, ld, spec_data1)) > 0)
- {
- return;
- }
- if (this_layer_stereo)
- {
- /* Stereo7 */
- /* error resilient spectral data decoding */
- if ((hInfo->error = reordered_spectral_data(hDecoder, ics2, ld, spec_data2)) > 0)
- {
- return;
- }
- }
-
-
-#ifdef DRM
-#ifdef SBR_DEC
- /* In case of DRM we need to read the SBR info before channel reconstruction */
- if ((hDecoder->sbr_present_flag == 1) && (hDecoder->object_type == DRM_ER_LC))
- {
- bitfile ld_sbr = {0};
- uint32_t i;
- uint16_t count = 0;
- uint8_t *revbuffer;
- uint8_t *prevbufstart;
- uint8_t *pbufend;
-
- /* all forward bitreading should be finished at this point */
- uint32_t bitsconsumed = faad_get_processed_bits(ld);
- uint32_t buffer_size = faad_origbitbuffer_size(ld);
- uint8_t *buffer = (uint8_t*)faad_origbitbuffer(ld);
-
- if (bitsconsumed + 8 > buffer_size*8)
- {
- hInfo->error = 14;
- return;
- }
-
- if (!hDecoder->sbr[0])
- {
- hDecoder->sbr[0] = sbrDecodeInit(hDecoder->frameLength, hDecoder->element_id[0],
- 2*get_sample_rate(hDecoder->sf_index), 0 /* ds SBR */, 1);
- }
-
- /* Reverse bit reading of SBR data in DRM audio frame */
- revbuffer = (uint8_t*)faad_malloc(buffer_size*sizeof(uint8_t));
- prevbufstart = revbuffer;
- pbufend = &buffer[buffer_size - 1];
- for (i = 0; i < buffer_size; i++)
- *prevbufstart++ = tabFlipbits[*pbufend--];
-
- /* Set SBR data */
- /* consider 8 bits from AAC-CRC */
- /* SBR buffer size is original buffer size minus AAC buffer size */
- count = (uint16_t)bit2byte(buffer_size*8 - bitsconsumed);
- faad_initbits(&ld_sbr, revbuffer, count);
-
- hDecoder->sbr[0]->sample_rate = get_sample_rate(hDecoder->sf_index);
- hDecoder->sbr[0]->sample_rate *= 2;
-
- faad_getbits(&ld_sbr, 8); /* Skip 8-bit CRC */
-
- hDecoder->sbr[0]->ret = sbr_extension_data(&ld_sbr, hDecoder->sbr[0], count, hDecoder->postSeekResetFlag);
-#if (defined(PS_DEC) || defined(DRM_PS))
- if (hDecoder->sbr[0]->ps_used)
- {
- hDecoder->ps_used[0] = 1;
- hDecoder->ps_used_global = 1;
- }
-#endif
-
- if (ld_sbr.error)
- {
- hDecoder->sbr[0]->ret = 1;
- }
-
- /* check CRC */
- /* no need to check it if there was already an error */
- if (hDecoder->sbr[0]->ret == 0)
- hDecoder->sbr[0]->ret = (uint8_t)faad_check_CRC(&ld_sbr, (uint16_t)faad_get_processed_bits(&ld_sbr) - 8);
-
- /* SBR data was corrupted, disable it until the next header */
- if (hDecoder->sbr[0]->ret != 0)
- {
- hDecoder->sbr[0]->header_count = 0;
- }
-
- faad_endbits(&ld_sbr);
-
- if (revbuffer)
- faad_free(revbuffer);
- }
-#endif
-#endif
-
- if (this_layer_stereo)
- {
- hInfo->error = reconstruct_channel_pair(hDecoder, ics1, ics2, &cpe, spec_data1, spec_data2);
- if (hInfo->error > 0)
- return;
- } else {
- hInfo->error = reconstruct_single_channel(hDecoder, ics1, &cpe, spec_data1);
- if (hInfo->error > 0)
- return;
- }
-
- /* map output channels position to internal data channels */
- if (hDecoder->element_output_channels[hDecoder->fr_ch_ele] == 2)
- {
- /* this might be faulty when pce_set is true */
- hDecoder->internal_channel[channels] = channels;
- hDecoder->internal_channel[channels+1] = channels+1;
- } else {
- hDecoder->internal_channel[channels] = channels;
- }
-
- hDecoder->fr_channels += hDecoder->element_output_channels[hDecoder->fr_ch_ele];
- hDecoder->fr_ch_ele++;
-
- return;
-}
-
-/* Table 4.4.15 */
-static int8_t DRM_aac_scalable_main_header(NeAACDecStruct *hDecoder, ic_stream *ics1, ic_stream *ics2,
- bitfile *ld, uint8_t this_layer_stereo)
-{
- uint8_t retval = 0;
- uint8_t ch;
- ic_stream *ics;
- uint8_t ics_reserved_bit;
-
- ics_reserved_bit = faad_get1bit(ld
- DEBUGVAR(1,300,"aac_scalable_main_header(): ics_reserved_bits"));
- if (ics_reserved_bit != 0)
- return 32;
- ics1->window_sequence = (uint8_t)faad_getbits(ld, 2
- DEBUGVAR(1,301,"aac_scalable_main_header(): window_sequence"));
- ics1->window_shape = faad_get1bit(ld
- DEBUGVAR(1,302,"aac_scalable_main_header(): window_shape"));
-
- if (ics1->window_sequence == EIGHT_SHORT_SEQUENCE)
- {
- ics1->max_sfb = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,303,"aac_scalable_main_header(): max_sfb (short)"));
- ics1->scale_factor_grouping = (uint8_t)faad_getbits(ld, 7
- DEBUGVAR(1,304,"aac_scalable_main_header(): scale_factor_grouping"));
- } else {
- ics1->max_sfb = (uint8_t)faad_getbits(ld, 6
- DEBUGVAR(1,305,"aac_scalable_main_header(): max_sfb (long)"));
- }
-
- /* get the grouping information */
- if ((retval = window_grouping_info(hDecoder, ics1)) > 0)
- return retval;
-
- /* should be an error */
- /* check the range of max_sfb */
- if (ics1->max_sfb > ics1->num_swb)
- return 16;
-
- if (this_layer_stereo)
- {
- ics1->ms_mask_present = (uint8_t)faad_getbits(ld, 2
- DEBUGVAR(1,306,"aac_scalable_main_header(): ms_mask_present"));
- if (ics1->ms_mask_present == 3)
- {
- /* bitstream error */
- return 32;
- }
- if (ics1->ms_mask_present == 1)
- {
- uint8_t g, sfb;
- for (g = 0; g < ics1->num_window_groups; g++)
- {
- for (sfb = 0; sfb < ics1->max_sfb; sfb++)
- {
- ics1->ms_used[g][sfb] = faad_get1bit(ld
- DEBUGVAR(1,307,"aac_scalable_main_header(): faad_get1bit"));
- }
- }
- }
-
- memcpy(ics2, ics1, sizeof(ic_stream));
- } else {
- ics1->ms_mask_present = 0;
- }
-
- return 0;
-}
-#endif
-
-static uint8_t side_info(NeAACDecStruct *hDecoder, element *ele,
- bitfile *ld, ic_stream *ics, uint8_t scal_flag)
-{
- uint8_t result;
-
- ics->global_gain = (uint8_t)faad_getbits(ld, 8
- DEBUGVAR(1,67,"individual_channel_stream(): global_gain"));
-
- if (!ele->common_window && !scal_flag)
- {
- if ((result = ics_info(hDecoder, ics, ld, ele->common_window)) > 0)
- return result;
- }
-
- if ((result = section_data(hDecoder, ics, ld)) > 0)
- return result;
-
- if ((result = scale_factor_data(hDecoder, ics, ld)) > 0)
- return result;
-
- if (!scal_flag)
- {
- /**
- ** NOTE: It could be that pulse data is available in scalable AAC too,
- ** as said in Amendment 1, this could be only the case for ER AAC,
- ** though. (have to check this out later)
- **/
- /* get pulse data */
- if ((ics->pulse_data_present = faad_get1bit(ld
- DEBUGVAR(1,68,"individual_channel_stream(): pulse_data_present"))) & 1)
- {
- if ((result = pulse_data(ics, &(ics->pul), ld)) > 0)
- return result;
- }
-
- /* get tns data */
- if ((ics->tns_data_present = faad_get1bit(ld
- DEBUGVAR(1,69,"individual_channel_stream(): tns_data_present"))) & 1)
- {
-#ifdef ERROR_RESILIENCE
- if (hDecoder->object_type < ER_OBJECT_START)
-#endif
- tns_data(ics, &(ics->tns), ld);
- }
-
- /* get gain control data */
- if ((ics->gain_control_data_present = faad_get1bit(ld
- DEBUGVAR(1,70,"individual_channel_stream(): gain_control_data_present"))) & 1)
- {
-#ifdef SSR_DEC
- if (hDecoder->object_type != SSR)
- return 1;
- else
- gain_control_data(ld, ics);
-#else
- return 1;
-#endif
- }
- }
-
-#ifdef ERROR_RESILIENCE
- if (hDecoder->aacSpectralDataResilienceFlag)
- {
- ics->length_of_reordered_spectral_data = (uint16_t)faad_getbits(ld, 14
- DEBUGVAR(1,147,"individual_channel_stream(): length_of_reordered_spectral_data"));
-
- if (hDecoder->channelConfiguration == 2)
- {
- if (ics->length_of_reordered_spectral_data > 6144)
- ics->length_of_reordered_spectral_data = 6144;
- } else {
- if (ics->length_of_reordered_spectral_data > 12288)
- ics->length_of_reordered_spectral_data = 12288;
- }
-
- ics->length_of_longest_codeword = (uint8_t)faad_getbits(ld, 6
- DEBUGVAR(1,148,"individual_channel_stream(): length_of_longest_codeword"));
- if (ics->length_of_longest_codeword >= 49)
- ics->length_of_longest_codeword = 49;
- }
-
- /* RVLC spectral data is put here */
- if (hDecoder->aacScalefactorDataResilienceFlag)
- {
- if ((result = rvlc_decode_scale_factors(ics, ld)) > 0)
- return result;
- }
-#endif
-
- return 0;
-}
-
-/* Table 4.4.24 */
-static uint8_t individual_channel_stream(NeAACDecStruct *hDecoder, element *ele,
- bitfile *ld, ic_stream *ics, uint8_t scal_flag,
- int16_t *spec_data)
-{
- uint8_t result;
-
- result = side_info(hDecoder, ele, ld, ics, scal_flag);
- if (result > 0)
- return result;
-
- if (hDecoder->object_type >= ER_OBJECT_START)
- {
- if (ics->tns_data_present)
- tns_data(ics, &(ics->tns), ld);
- }
-
-#ifdef DRM
- /* CRC check */
- if (hDecoder->object_type == DRM_ER_LC)
- {
- if ((result = (uint8_t)faad_check_CRC(ld, (uint16_t)faad_get_processed_bits(ld) - 8)) > 0)
- return result;
- }
-#endif
-
-#ifdef ERROR_RESILIENCE
- if (hDecoder->aacSpectralDataResilienceFlag)
- {
- /* error resilient spectral data decoding */
- if ((result = reordered_spectral_data(hDecoder, ics, ld, spec_data)) > 0)
- {
- return result;
- }
- } else {
-#endif
- /* decode the spectral data */
- if ((result = spectral_data(hDecoder, ics, ld, spec_data)) > 0)
- {
- return result;
- }
-#ifdef ERROR_RESILIENCE
- }
-#endif
-
- /* pulse coding reconstruction */
- if (ics->pulse_data_present)
- {
- if (ics->window_sequence != EIGHT_SHORT_SEQUENCE)
- {
- if ((result = pulse_decode(ics, spec_data, hDecoder->frameLength)) > 0)
- return result;
- } else {
- return 2; /* pulse coding not allowed for short blocks */
- }
- }
-
- return 0;
-}
-
-/* Table 4.4.25 */
-static uint8_t section_data(NeAACDecStruct *hDecoder, ic_stream *ics, bitfile *ld)
-{
- uint8_t g;
- uint8_t sect_esc_val, sect_bits;
-
- if (ics->window_sequence == EIGHT_SHORT_SEQUENCE)
- sect_bits = 3;
- else
- sect_bits = 5;
- sect_esc_val = (1<<sect_bits) - 1;
-
-#if 0
- printf("\ntotal sfb %d\n", ics->max_sfb);
- printf(" sect top cb\n");
-#endif
-
- for (g = 0; g < ics->num_window_groups; g++)
- {
- uint8_t k = 0;
- uint8_t i = 0;
-
- while (k < ics->max_sfb)
- {
-#ifdef ERROR_RESILIENCE
- uint8_t vcb11 = 0;
-#endif
- uint8_t sfb;
- uint8_t sect_len_incr;
- uint16_t sect_len = 0;
- uint8_t sect_cb_bits = 4;
-
- /* if "faad_getbits" detects error and returns "0", "k" is never
- incremented and we cannot leave the while loop */
- if (ld->error != 0)
- return 14;
-
-#ifdef ERROR_RESILIENCE
- if (hDecoder->aacSectionDataResilienceFlag)
- sect_cb_bits = 5;
-#endif
-
- ics->sect_cb[g][i] = (uint8_t)faad_getbits(ld, sect_cb_bits
- DEBUGVAR(1,71,"section_data(): sect_cb"));
-
- if (ics->sect_cb[g][i] == 12)
- return 32;
-
-#if 0
- printf("%d\n", ics->sect_cb[g][i]);
-#endif
-
-#ifndef DRM
- if (ics->sect_cb[g][i] == NOISE_HCB)
- ics->noise_used = 1;
-#else
- /* PNS not allowed in DRM */
- if (ics->sect_cb[g][i] == NOISE_HCB)
- return 29;
-#endif
- if (ics->sect_cb[g][i] == INTENSITY_HCB2 || ics->sect_cb[g][i] == INTENSITY_HCB)
- ics->is_used = 1;
-
-#ifdef ERROR_RESILIENCE
- if (hDecoder->aacSectionDataResilienceFlag)
- {
- if ((ics->sect_cb[g][i] == 11) ||
- ((ics->sect_cb[g][i] >= 16) && (ics->sect_cb[g][i] <= 32)))
- {
- vcb11 = 1;
- }
- }
- if (vcb11)
- {
- sect_len_incr = 1;
- } else {
-#endif
- sect_len_incr = (uint8_t)faad_getbits(ld, sect_bits
- DEBUGVAR(1,72,"section_data(): sect_len_incr"));
-#ifdef ERROR_RESILIENCE
- }
-#endif
- while ((sect_len_incr == sect_esc_val) /* &&
- (k+sect_len < ics->max_sfb)*/)
- {
- sect_len += sect_len_incr;
- sect_len_incr = (uint8_t)faad_getbits(ld, sect_bits
- DEBUGVAR(1,72,"section_data(): sect_len_incr"));
- }
-
- sect_len += sect_len_incr;
-
- ics->sect_start[g][i] = k;
- ics->sect_end[g][i] = k + sect_len;
-
-#if 0
- printf("%d\n", ics->sect_start[g][i]);
-#endif
-#if 0
- printf("%d\n", ics->sect_end[g][i]);
-#endif
-
- if (ics->window_sequence == EIGHT_SHORT_SEQUENCE)
- {
- if (k + sect_len > 8*15)
- return 15;
- if (i >= 8*15)
- return 15;
- } else {
- if (k + sect_len > MAX_SFB)
- return 15;
- if (i >= MAX_SFB)
- return 15;
- }
-
- for (sfb = k; sfb < k + sect_len; sfb++)
- {
- ics->sfb_cb[g][sfb] = ics->sect_cb[g][i];
-#if 0
- printf("%d\n", ics->sfb_cb[g][sfb]);
-#endif
- }
-
-#if 0
- printf(" %6d %6d %6d\n",
- i,
- ics->sect_end[g][i],
- ics->sect_cb[g][i]);
-#endif
-
- k += sect_len;
- i++;
- }
- ics->num_sec[g] = i;
-
- /* the sum of all sect_len_incr elements for a given window
- * group shall equal max_sfb */
- if (k != ics->max_sfb)
- {
- return 32;
- }
-#if 0
- printf("%d\n", ics->num_sec[g]);
-#endif
- }
-
-#if 0
- printf("\n");
-#endif
-
- return 0;
-}
-
-/*
- * decode_scale_factors()
- * decodes the scalefactors from the bitstream
- */
-/*
- * All scalefactors (and also the stereo positions and pns energies) are
- * transmitted using Huffman coded DPCM relative to the previous active
- * scalefactor (respectively previous stereo position or previous pns energy,
- * see subclause 4.6.2 and 4.6.3). The first active scalefactor is
- * differentially coded relative to the global gain.
- */
-static uint8_t decode_scale_factors(ic_stream *ics, bitfile *ld)
-{
- uint8_t g, sfb;
- int16_t t;
- int8_t noise_pcm_flag = 1;
-
- int16_t scale_factor = ics->global_gain;
- int16_t is_position = 0;
- int16_t noise_energy = ics->global_gain - 90;
-
- for (g = 0; g < ics->num_window_groups; g++)
- {
- for (sfb = 0; sfb < ics->max_sfb; sfb++)
- {
- switch (ics->sfb_cb[g][sfb])
- {
- case ZERO_HCB: /* zero book */
- ics->scale_factors[g][sfb] = 0;
-//#define SF_PRINT
-#ifdef SF_PRINT
- printf("%d\n", ics->scale_factors[g][sfb]);
-#endif
- break;
- case INTENSITY_HCB: /* intensity books */
- case INTENSITY_HCB2:
-
- /* decode intensity position */
- t = huffman_scale_factor(ld);
- is_position += (t - 60);
- ics->scale_factors[g][sfb] = is_position;
-#ifdef SF_PRINT
- printf("%d\n", ics->scale_factors[g][sfb]);
-#endif
-
- break;
- case NOISE_HCB: /* noise books */
-
-#ifndef DRM
- /* decode noise energy */
- if (noise_pcm_flag)
- {
- noise_pcm_flag = 0;
- t = (int16_t)faad_getbits(ld, 9
- DEBUGVAR(1,73,"scale_factor_data(): first noise")) - 256;
- } else {
- t = huffman_scale_factor(ld);
- t -= 60;
- }
- noise_energy += t;
- ics->scale_factors[g][sfb] = noise_energy;
-#ifdef SF_PRINT
- printf("%d\n", ics->scale_factors[g][sfb]);
-#endif
-#else
- /* PNS not allowed in DRM */
- return 29;
-#endif
-
- break;
- default: /* spectral books */
-
- /* ics->scale_factors[g][sfb] must be between 0 and 255 */
-
- ics->scale_factors[g][sfb] = 0;
-
- /* decode scale factor */
- t = huffman_scale_factor(ld);
- scale_factor += (t - 60);
- if (scale_factor < 0 || scale_factor > 255)
- return 4;
- ics->scale_factors[g][sfb] = scale_factor;
-#ifdef SF_PRINT
- printf("%d\n", ics->scale_factors[g][sfb]);
-#endif
-
- break;
- }
- }
- }
-
- return 0;
-}
-
-/* Table 4.4.26 */
-static uint8_t scale_factor_data(NeAACDecStruct *hDecoder, ic_stream *ics, bitfile *ld)
-{
- uint8_t ret = 0;
-#ifdef PROFILE
- int64_t count = faad_get_ts();
-#endif
-
-#ifdef ERROR_RESILIENCE
- if (!hDecoder->aacScalefactorDataResilienceFlag)
- {
-#endif
- ret = decode_scale_factors(ics, ld);
-#ifdef ERROR_RESILIENCE
- } else {
- /* In ER AAC the parameters for RVLC are seperated from the actual
- data that holds the scale_factors.
- Strangely enough, 2 parameters for HCR are put inbetween them.
- */
- ret = rvlc_scale_factor_data(ics, ld);
- }
-#endif
-
-#ifdef PROFILE
- count = faad_get_ts() - count;
- hDecoder->scalefac_cycles += count;
-#endif
-
- return ret;
-}
-
-/* Table 4.4.27 */
-static void tns_data(ic_stream *ics, tns_info *tns, bitfile *ld)
-{
- uint8_t w, filt, i, start_coef_bits, coef_bits;
- uint8_t n_filt_bits = 2;
- uint8_t length_bits = 6;
- uint8_t order_bits = 5;
-
- if (ics->window_sequence == EIGHT_SHORT_SEQUENCE)
- {
- n_filt_bits = 1;
- length_bits = 4;
- order_bits = 3;
- }
-
- for (w = 0; w < ics->num_windows; w++)
- {
- tns->n_filt[w] = (uint8_t)faad_getbits(ld, n_filt_bits
- DEBUGVAR(1,74,"tns_data(): n_filt"));
-#if 0
- printf("%d\n", tns->n_filt[w]);
-#endif
-
- if (tns->n_filt[w])
- {
- if ((tns->coef_res[w] = faad_get1bit(ld
- DEBUGVAR(1,75,"tns_data(): coef_res"))) & 1)
- {
- start_coef_bits = 4;
- } else {
- start_coef_bits = 3;
- }
-#if 0
- printf("%d\n", tns->coef_res[w]);
-#endif
- }
-
- for (filt = 0; filt < tns->n_filt[w]; filt++)
- {
- tns->length[w][filt] = (uint8_t)faad_getbits(ld, length_bits
- DEBUGVAR(1,76,"tns_data(): length"));
-#if 0
- printf("%d\n", tns->length[w][filt]);
-#endif
- tns->order[w][filt] = (uint8_t)faad_getbits(ld, order_bits
- DEBUGVAR(1,77,"tns_data(): order"));
-#if 0
- printf("%d\n", tns->order[w][filt]);
-#endif
- if (tns->order[w][filt])
- {
- tns->direction[w][filt] = faad_get1bit(ld
- DEBUGVAR(1,78,"tns_data(): direction"));
-#if 0
- printf("%d\n", tns->direction[w][filt]);
-#endif
- tns->coef_compress[w][filt] = faad_get1bit(ld
- DEBUGVAR(1,79,"tns_data(): coef_compress"));
-#if 0
- printf("%d\n", tns->coef_compress[w][filt]);
-#endif
-
- coef_bits = start_coef_bits - tns->coef_compress[w][filt];
- for (i = 0; i < tns->order[w][filt]; i++)
- {
- tns->coef[w][filt][i] = (uint8_t)faad_getbits(ld, coef_bits
- DEBUGVAR(1,80,"tns_data(): coef"));
-#if 0
- printf("%d\n", tns->coef[w][filt][i]);
-#endif
- }
- }
- }
- }
-}
-
-#ifdef LTP_DEC
-/* Table 4.4.28 */
-static uint8_t ltp_data(NeAACDecStruct *hDecoder, ic_stream *ics, ltp_info *ltp, bitfile *ld)
-{
- uint8_t sfb, w;
-
- ltp->lag = 0;
-
-#ifdef LD_DEC
- if (hDecoder->object_type == LD)
- {
- ltp->lag_update = (uint8_t)faad_getbits(ld, 1
- DEBUGVAR(1,142,"ltp_data(): lag_update"));
-
- if (ltp->lag_update)
- {
- ltp->lag = (uint16_t)faad_getbits(ld, 10
- DEBUGVAR(1,81,"ltp_data(): lag"));
- }
- } else {
-#endif
- ltp->lag = (uint16_t)faad_getbits(ld, 11
- DEBUGVAR(1,81,"ltp_data(): lag"));
-#ifdef LD_DEC
- }
-#endif
-
- /* Check length of lag */
- if (ltp->lag > (hDecoder->frameLength << 1))
- return 18;
-
- ltp->coef = (uint8_t)faad_getbits(ld, 3
- DEBUGVAR(1,82,"ltp_data(): coef"));
-
- if (ics->window_sequence == EIGHT_SHORT_SEQUENCE)
- {
- for (w = 0; w < ics->num_windows; w++)
- {
- if ((ltp->short_used[w] = faad_get1bit(ld
- DEBUGVAR(1,83,"ltp_data(): short_used"))) & 1)
- {
- ltp->short_lag_present[w] = faad_get1bit(ld
- DEBUGVAR(1,84,"ltp_data(): short_lag_present"));
- if (ltp->short_lag_present[w])
- {
- ltp->short_lag[w] = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,85,"ltp_data(): short_lag"));
- }
- }
- }
- } else {
- ltp->last_band = (ics->max_sfb < MAX_LTP_SFB ? ics->max_sfb : MAX_LTP_SFB);
-
- for (sfb = 0; sfb < ltp->last_band; sfb++)
- {
- ltp->long_used[sfb] = faad_get1bit(ld
- DEBUGVAR(1,86,"ltp_data(): long_used"));
- }
- }
-
- return 0;
-}
-#endif
-
-/* Table 4.4.29 */
-static uint8_t spectral_data(NeAACDecStruct *hDecoder, ic_stream *ics, bitfile *ld,
- int16_t *spectral_data)
-{
- int8_t i;
- uint8_t g;
- uint16_t inc, k, p = 0;
- uint8_t groups = 0;
- uint8_t sect_cb;
- uint8_t result;
- uint16_t nshort = hDecoder->frameLength/8;
-
-#ifdef PROFILE
- int64_t count = faad_get_ts();
-#endif
-
- for(g = 0; g < ics->num_window_groups; g++)
- {
- p = groups*nshort;
-
- for (i = 0; i < ics->num_sec[g]; i++)
- {
- sect_cb = ics->sect_cb[g][i];
-
- inc = (sect_cb >= FIRST_PAIR_HCB) ? 2 : 4;
-
- switch (sect_cb)
- {
- case ZERO_HCB:
- case NOISE_HCB:
- case INTENSITY_HCB:
- case INTENSITY_HCB2:
-//#define SD_PRINT
-#ifdef SD_PRINT
- {
- int j;
- for (j = ics->sect_sfb_offset[g][ics->sect_start[g][i]]; j < ics->sect_sfb_offset[g][ics->sect_end[g][i]]; j++)
- {
- printf("%d\n", 0);
- }
- }
-#endif
-//#define SFBO_PRINT
-#ifdef SFBO_PRINT
- printf("%d\n", ics->sect_sfb_offset[g][ics->sect_start[g][i]]);
-#endif
- p += (ics->sect_sfb_offset[g][ics->sect_end[g][i]] -
- ics->sect_sfb_offset[g][ics->sect_start[g][i]]);
- break;
- default:
-#ifdef SFBO_PRINT
- printf("%d\n", ics->sect_sfb_offset[g][ics->sect_start[g][i]]);
-#endif
- for (k = ics->sect_sfb_offset[g][ics->sect_start[g][i]];
- k < ics->sect_sfb_offset[g][ics->sect_end[g][i]]; k += inc)
- {
- if ((result = huffman_spectral_data(sect_cb, ld, &spectral_data[p])) > 0)
- return result;
-#ifdef SD_PRINT
- {
- int j;
- for (j = p; j < p+inc; j++)
- {
- printf("%d\n", spectral_data[j]);
- }
- }
-#endif
- p += inc;
- }
- break;
- }
- }
- groups += ics->window_group_length[g];
- }
-
-#ifdef PROFILE
- count = faad_get_ts() - count;
- hDecoder->spectral_cycles += count;
-#endif
-
- return 0;
-}
-
-/* Table 4.4.30 */
-static uint16_t extension_payload(bitfile *ld, drc_info *drc, uint16_t count)
-{
- uint16_t i, n, dataElementLength;
- uint8_t dataElementLengthPart;
- uint8_t align = 4, data_element_version, loopCounter;
-
- uint8_t extension_type = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,87,"extension_payload(): extension_type"));
-
- switch (extension_type)
- {
- case EXT_DYNAMIC_RANGE:
- drc->present = 1;
- n = dynamic_range_info(ld, drc);
- return n;
- case EXT_FILL_DATA:
- /* fill_nibble = */ faad_getbits(ld, 4
- DEBUGVAR(1,136,"extension_payload(): fill_nibble")); /* must be ‘0000’ */
- for (i = 0; i < count-1; i++)
- {
- /* fill_byte[i] = */ faad_getbits(ld, 8
- DEBUGVAR(1,88,"extension_payload(): fill_byte")); /* must be ‘10100101’ */
- }
- return count;
- case EXT_DATA_ELEMENT:
- data_element_version = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,400,"extension_payload(): data_element_version"));
- switch (data_element_version)
- {
- case ANC_DATA:
- loopCounter = 0;
- dataElementLength = 0;
- do {
- dataElementLengthPart = (uint8_t)faad_getbits(ld, 8
- DEBUGVAR(1,401,"extension_payload(): dataElementLengthPart"));
- dataElementLength += dataElementLengthPart;
- loopCounter++;
- } while (dataElementLengthPart == 255);
-
- for (i = 0; i < dataElementLength; i++)
- {
- /* data_element_byte[i] = */ faad_getbits(ld, 8
- DEBUGVAR(1,402,"extension_payload(): data_element_byte"));
- return (dataElementLength+loopCounter+1);
- }
- default:
- align = 0;
- }
- case EXT_FIL:
- default:
- faad_getbits(ld, align
- DEBUGVAR(1,88,"extension_payload(): fill_nibble"));
- for (i = 0; i < count-1; i++)
- {
- /* other_bits[i] = */ faad_getbits(ld, 8
- DEBUGVAR(1,89,"extension_payload(): fill_bit"));
- }
- return count;
- }
-}
-
-/* Table 4.4.31 */
-static uint8_t dynamic_range_info(bitfile *ld, drc_info *drc)
-{
- uint8_t i, n = 1;
- uint8_t band_incr;
-
- drc->num_bands = 1;
-
- if (faad_get1bit(ld
- DEBUGVAR(1,90,"dynamic_range_info(): has instance_tag")) & 1)
- {
- drc->pce_instance_tag = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,91,"dynamic_range_info(): pce_instance_tag"));
- /* drc->drc_tag_reserved_bits = */ faad_getbits(ld, 4
- DEBUGVAR(1,92,"dynamic_range_info(): drc_tag_reserved_bits"));
- n++;
- }
-
- drc->excluded_chns_present = faad_get1bit(ld
- DEBUGVAR(1,93,"dynamic_range_info(): excluded_chns_present"));
- if (drc->excluded_chns_present == 1)
- {
- n += excluded_channels(ld, drc);
- }
-
- if (faad_get1bit(ld
- DEBUGVAR(1,94,"dynamic_range_info(): has bands data")) & 1)
- {
- band_incr = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,95,"dynamic_range_info(): band_incr"));
- /* drc->drc_bands_reserved_bits = */ faad_getbits(ld, 4
- DEBUGVAR(1,96,"dynamic_range_info(): drc_bands_reserved_bits"));
- n++;
- drc->num_bands += band_incr;
-
- for (i = 0; i < drc->num_bands; i++)
- {
- drc->band_top[i] = (uint8_t)faad_getbits(ld, 8
- DEBUGVAR(1,97,"dynamic_range_info(): band_top"));
- n++;
- }
- }
-
- if (faad_get1bit(ld
- DEBUGVAR(1,98,"dynamic_range_info(): has prog_ref_level")) & 1)
- {
- drc->prog_ref_level = (uint8_t)faad_getbits(ld, 7
- DEBUGVAR(1,99,"dynamic_range_info(): prog_ref_level"));
- /* drc->prog_ref_level_reserved_bits = */ faad_get1bit(ld
- DEBUGVAR(1,100,"dynamic_range_info(): prog_ref_level_reserved_bits"));
- n++;
- }
-
- for (i = 0; i < drc->num_bands; i++)
- {
- drc->dyn_rng_sgn[i] = faad_get1bit(ld
- DEBUGVAR(1,101,"dynamic_range_info(): dyn_rng_sgn"));
- drc->dyn_rng_ctl[i] = (uint8_t)faad_getbits(ld, 7
- DEBUGVAR(1,102,"dynamic_range_info(): dyn_rng_ctl"));
- n++;
- }
-
- return n;
-}
-
-/* Table 4.4.32 */
-static uint8_t excluded_channels(bitfile *ld, drc_info *drc)
-{
- uint8_t i, n = 0;
- uint8_t num_excl_chan = 7;
-
- for (i = 0; i < 7; i++)
- {
- drc->exclude_mask[i] = faad_get1bit(ld
- DEBUGVAR(1,103,"excluded_channels(): exclude_mask"));
- }
- n++;
-
- while ((drc->additional_excluded_chns[n-1] = faad_get1bit(ld
- DEBUGVAR(1,104,"excluded_channels(): additional_excluded_chns"))) == 1)
- {
- for (i = num_excl_chan; i < num_excl_chan+7; i++)
- {
- drc->exclude_mask[i] = faad_get1bit(ld
- DEBUGVAR(1,105,"excluded_channels(): exclude_mask"));
- }
- n++;
- num_excl_chan += 7;
- }
-
- return n;
-}
-
-/* Annex A: Audio Interchange Formats */
-
-/* Table 1.A.2 */
-void get_adif_header(adif_header *adif, bitfile *ld)
-{
- uint8_t i;
-
- /* adif_id[0] = */ faad_getbits(ld, 8
- DEBUGVAR(1,106,"get_adif_header(): adif_id[0]"));
- /* adif_id[1] = */ faad_getbits(ld, 8
- DEBUGVAR(1,107,"get_adif_header(): adif_id[1]"));
- /* adif_id[2] = */ faad_getbits(ld, 8
- DEBUGVAR(1,108,"get_adif_header(): adif_id[2]"));
- /* adif_id[3] = */ faad_getbits(ld, 8
- DEBUGVAR(1,109,"get_adif_header(): adif_id[3]"));
- adif->copyright_id_present = faad_get1bit(ld
- DEBUGVAR(1,110,"get_adif_header(): copyright_id_present"));
- if(adif->copyright_id_present)
- {
- for (i = 0; i < 72/8; i++)
- {
- adif->copyright_id[i] = (int8_t)faad_getbits(ld, 8
- DEBUGVAR(1,111,"get_adif_header(): copyright_id"));
- }
- adif->copyright_id[i] = 0;
- }
- adif->original_copy = faad_get1bit(ld
- DEBUGVAR(1,112,"get_adif_header(): original_copy"));
- adif->home = faad_get1bit(ld
- DEBUGVAR(1,113,"get_adif_header(): home"));
- adif->bitstream_type = faad_get1bit(ld
- DEBUGVAR(1,114,"get_adif_header(): bitstream_type"));
- adif->bitrate = faad_getbits(ld, 23
- DEBUGVAR(1,115,"get_adif_header(): bitrate"));
- adif->num_program_config_elements = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,116,"get_adif_header(): num_program_config_elements"));
-
- for (i = 0; i < adif->num_program_config_elements + 1; i++)
- {
- if(adif->bitstream_type == 0)
- {
- adif->adif_buffer_fullness = faad_getbits(ld, 20
- DEBUGVAR(1,117,"get_adif_header(): adif_buffer_fullness"));
- } else {
- adif->adif_buffer_fullness = 0;
- }
-
- program_config_element(&adif->pce[i], ld);
- }
-}
-
-/* Table 1.A.5 */
-uint8_t adts_frame(adts_header *adts, bitfile *ld)
-{
- /* faad_byte_align(ld); */
- if (adts_fixed_header(adts, ld))
- return 5;
- adts_variable_header(adts, ld);
- adts_error_check(adts, ld);
-
- return 0;
-}
-
-/* Table 1.A.6 */
-static uint8_t adts_fixed_header(adts_header *adts, bitfile *ld)
-{
- uint16_t i;
- uint8_t sync_err = 1;
-
- /* try to recover from sync errors */
- for (i = 0; i < 768; i++)
- {
- adts->syncword = (uint16_t)faad_showbits(ld, 12);
- if (adts->syncword != 0xFFF)
- {
- faad_getbits(ld, 8
- DEBUGVAR(0,0,""));
- } else {
- sync_err = 0;
- faad_getbits(ld, 12
- DEBUGVAR(1,118,"adts_fixed_header(): syncword"));
- break;
- }
- }
- if (sync_err)
- return 5;
-
- adts->id = faad_get1bit(ld
- DEBUGVAR(1,119,"adts_fixed_header(): id"));
- adts->layer = (uint8_t)faad_getbits(ld, 2
- DEBUGVAR(1,120,"adts_fixed_header(): layer"));
- adts->protection_absent = faad_get1bit(ld
- DEBUGVAR(1,121,"adts_fixed_header(): protection_absent"));
- adts->profile = (uint8_t)faad_getbits(ld, 2
- DEBUGVAR(1,122,"adts_fixed_header(): profile"));
- adts->sf_index = (uint8_t)faad_getbits(ld, 4
- DEBUGVAR(1,123,"adts_fixed_header(): sf_index"));
- adts->private_bit = faad_get1bit(ld
- DEBUGVAR(1,124,"adts_fixed_header(): private_bit"));
- adts->channel_configuration = (uint8_t)faad_getbits(ld, 3
- DEBUGVAR(1,125,"adts_fixed_header(): channel_configuration"));
- adts->original = faad_get1bit(ld
- DEBUGVAR(1,126,"adts_fixed_header(): original"));
- adts->home = faad_get1bit(ld
- DEBUGVAR(1,127,"adts_fixed_header(): home"));
-
- if (adts->old_format == 1)
- {
- /* Removed in corrigendum 14496-3:2002 */
- if (adts->id == 0)
- {
- adts->emphasis = (uint8_t)faad_getbits(ld, 2
- DEBUGVAR(1,128,"adts_fixed_header(): emphasis"));
- }
- }
-
- return 0;
-}
-
-/* Table 1.A.7 */
-static void adts_variable_header(adts_header *adts, bitfile *ld)
-{
- adts->copyright_identification_bit = faad_get1bit(ld
- DEBUGVAR(1,129,"adts_variable_header(): copyright_identification_bit"));
- adts->copyright_identification_start = faad_get1bit(ld
- DEBUGVAR(1,130,"adts_variable_header(): copyright_identification_start"));
- adts->aac_frame_length = (uint16_t)faad_getbits(ld, 13
- DEBUGVAR(1,131,"adts_variable_header(): aac_frame_length"));
- adts->adts_buffer_fullness = (uint16_t)faad_getbits(ld, 11
- DEBUGVAR(1,132,"adts_variable_header(): adts_buffer_fullness"));
- adts->no_raw_data_blocks_in_frame = (uint8_t)faad_getbits(ld, 2
- DEBUGVAR(1,133,"adts_variable_header(): no_raw_data_blocks_in_frame"));
-}
-
-/* Table 1.A.8 */
-static void adts_error_check(adts_header *adts, bitfile *ld)
-{
- if (adts->protection_absent == 0)
- {
- adts->crc_check = (uint16_t)faad_getbits(ld, 16
- DEBUGVAR(1,134,"adts_error_check(): crc_check"));
- }
-}
-
-/* LATM parsing functions */
-
-static uint32_t latm_get_value(bitfile *ld)
-{
- uint32_t l, value;
- uint8_t bytesForValue;
-
- bytesForValue = (uint8_t)faad_getbits(ld, 2);
- value = 0;
- for(l=0; l<bytesForValue; l++)
- value = (value << 8) | (uint8_t)faad_getbits(ld, 8);
-
- return value;
-}
-
-
-static uint32_t latmParsePayload(latm_header *latm, bitfile *ld)
-{
- //assuming there's only one program with a single layer and 1 subFrame,
- //allStreamsSametimeframing is set,
- uint32_t framelen;
- uint8_t tmp;
-
- //this should be the payload length field for the current configuration
- framelen = 0;
- if(latm->framelen_type==0)
- {
- do
- {
- tmp = (uint8_t)faad_getbits(ld, 8);
- framelen += tmp;
- } while(tmp==0xff);
- }
- else if(latm->framelen_type==1)
- framelen=latm->frameLength;
-
- return framelen;
-}
-
-
-static uint32_t latmAudioMuxElement(latm_header *latm, bitfile *ld)
-{
- uint32_t ascLen, asc_bits=0;
- uint32_t x1, y1, m, n, i;
- program_config pce;
- mp4AudioSpecificConfig mp4ASC;
-
- latm->useSameStreamMux = (uint8_t)faad_getbits(ld, 1);
- if(!latm->useSameStreamMux)
- {
- //parseSameStreamMuxConfig
- latm->version = (uint8_t) faad_getbits(ld, 1);
- if(latm->version)
- latm->versionA = (uint8_t) faad_getbits(ld, 1);
- if(latm->versionA)
- {
- //dunno the payload format for versionA
- fprintf(stderr, "versionA not supported\n");
- return 0;
- }
- if(latm->version) //read taraBufferFullness
- latm_get_value(ld);
- latm->allStreamsSameTimeFraming = (uint8_t)faad_getbits(ld, 1);
- latm->numSubFrames = (uint8_t)faad_getbits(ld, 6) + 1;
- latm->numPrograms = (uint8_t)faad_getbits(ld, 4) + 1;
- latm->numLayers = faad_getbits(ld, 3) + 1;
- if(latm->numPrograms>1 || !latm->allStreamsSameTimeFraming || latm->numSubFrames>1 || latm->numLayers>1)
- {
- fprintf(stderr, "\r\nUnsupported LATM configuration: %d programs/ %d subframes, %d layers, allstreams: %d\n",
- latm->numPrograms, latm->numSubFrames, latm->numLayers, latm->allStreamsSameTimeFraming);
- return 0;
- }
- ascLen = 0;
- if(latm->version)
- ascLen = latm_get_value(ld);
-
- x1 = faad_get_processed_bits(ld);
- if(AudioSpecificConfigFromBitfile(ld, &mp4ASC, &pce, 0, 1) < 0)
- return 0;
-
- //horrid hack to unread the ASC bits and store them in latm->ASC
- //the correct code would rely on an ideal faad_ungetbits()
- y1 = faad_get_processed_bits(ld);
- if((y1-x1) <= MAX_ASC_BYTES*8)
- {
- faad_rewindbits(ld);
- m = x1;
- while(m>0)
- {
- n = min(m, 32);
- faad_getbits(ld, n);
- m -= n;
- }
-
- i = 0;
- m = latm->ASCbits = y1 - x1;
- while(m > 0)
- {
- n = min(m, 8);
- latm->ASC[i++] = (uint8_t) faad_getbits(ld, n);
- m -= n;
- }
- }
-
- asc_bits = y1-x1;
-
- if(ascLen>asc_bits)
- faad_getbits(ld, ascLen-asc_bits);
-
- latm->framelen_type = (uint8_t) faad_getbits(ld, 3);
- if(latm->framelen_type == 0)
- {
- latm->frameLength = 0;
- faad_getbits(ld, 8); //buffer fullness for frame_len_type==0, useless
- }
- else if(latm->framelen_type == 1)
- {
- latm->frameLength = faad_getbits(ld, 9);
- if(latm->frameLength==0)
- {
- fprintf(stderr, "Invalid frameLength: 0\r\n");
- return 0;
- }
- latm->frameLength = (latm->frameLength+20)*8;
- }
- else
- { //hellish CELP or HCVX stuff, discard
- fprintf(stderr, "Unsupported CELP/HCVX framelentype: %d\n", latm->framelen_type);
- return 0;
- }
-
- latm->otherDataLenBits = 0;
- if(faad_getbits(ld, 1))
- { //other data present
- int esc, tmp;
- if(latm->version)
- latm->otherDataLenBits = latm_get_value(ld);
- else do
- {
- esc = faad_getbits(ld, 1);
- tmp = faad_getbits(ld, 8);
- latm->otherDataLenBits = (latm->otherDataLenBits << 8) + tmp;
- } while(esc);
- }
- if(faad_getbits(ld, 1)) //crc
- faad_getbits(ld, 8);
- latm->inited = 1;
- }
-
- //read payload
- if(latm->inited)
- return latmParsePayload(latm, ld);
- else
- return 0;
-}
-
-
-uint32_t faad_latm_frame(latm_header *latm, bitfile *ld)
-{
- uint16_t len;
- uint32_t initpos, endpos, firstpos, ret;
-
- firstpos = faad_get_processed_bits(ld);
- while (ld->bytes_left)
- {
- faad_byte_align(ld);
- if(faad_showbits(ld, 11) != 0x2B7)
- {
- faad_getbits(ld, 8);
- continue;
- }
- faad_getbits(ld, 11);
- len = faad_getbits(ld, 13);
- if(!len)
- continue;
- initpos = faad_get_processed_bits(ld);
- ret = latmAudioMuxElement(latm, ld);
- endpos = faad_get_processed_bits(ld);
- if(ret>0)
- return (len*8)-(endpos-initpos);
- //faad_getbits(ld, initpos-endpos); //go back to initpos, but is valid a getbits(-N) ?
- }
- return -1U;
-}