From a68df043bfbc7f8f38332143577877846631eca4 Mon Sep 17 00:00:00 2001 From: MichaÅ‚ CichoÅ„ Date: Tue, 25 Aug 2015 19:58:37 +0200 Subject: Update build environment - remove faad2 - remove mad - remove polarssl - remove pthreads - add libcurl - add vtparse with UTF8 support - update project to use Visual Studio 2015 --- faad2/src/libfaad/syntax.c | 2634 -------------------------------------------- 1 file changed, 2634 deletions(-) delete mode 100644 faad2/src/libfaad/syntax.c (limited to 'faad2/src/libfaad/syntax.c') diff --git a/faad2/src/libfaad/syntax.c b/faad2/src/libfaad/syntax.c deleted file mode 100644 index a5d1d9c..0000000 --- a/faad2/src/libfaad/syntax.c +++ /dev/null @@ -1,2634 +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: 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 -#include -#include - -#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<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; lframelen_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; -} -- cgit v1.2.3