From 42ed53f221dc6570b7f6e05ef93f38b7457a68d8 Mon Sep 17 00:00:00 2001 From: diego Date: Sat, 1 Jan 2011 14:27:41 +0000 Subject: libfaad2:/ Remove forked internal libfaad2 copy git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@32741 b3059339-0415-0410-9bf9-f77b7e298cf2 Remove AAC/FAAD2 installation instructions. There is nothing special about building and installing FAAD2, so there is no longer a need to keep maintaining instructions for it. git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@32742 b3059339-0415-0410-9bf9-f77b7e298cf2 --- libfaad2/decoder.c | 1095 ---------------------------------------------------- 1 file changed, 1095 deletions(-) delete mode 100644 libfaad2/decoder.c (limited to 'libfaad2/decoder.c') diff --git a/libfaad2/decoder.c b/libfaad2/decoder.c deleted file mode 100644 index 710a3cf796..0000000000 --- a/libfaad2/decoder.c +++ /dev/null @@ -1,1095 +0,0 @@ -/* -** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding -** Copyright (C) 2003-2004 M. Bakker, Ahead Software AG, http://www.nero.com -** -** This program is free software; you can redistribute it and/or modify -** it under the terms of the GNU General Public License as published by -** the Free Software Foundation; either version 2 of the License, or -** (at your option) any later version. -** -** This program is distributed in the hope that it will be useful, -** but WITHOUT ANY WARRANTY; without even the implied warranty of -** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -** GNU General Public License for more details. -** -** You should have received a copy of the GNU General Public License -** along with this program; if not, write to the Free Software -** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. -** -** Any non-GPL usage of this software or parts of this software is strictly -** forbidden. -** -** Commercial non-GPL licensing of this software is possible. -** For more info contact Ahead Software through Mpeg4AAClicense@nero.com. -** -** $Id: decoder.c,v 1.107 2004/09/08 09:43:11 gcp Exp $ -**/ - -#include "common.h" -#include "structs.h" - -#include -#include - -#include "decoder.h" -#include "mp4.h" -#include "syntax.h" -#include "error.h" -#include "output.h" -#include "filtbank.h" -#include "drc.h" -#ifdef SBR_DEC -#include "sbr_dec.h" -#include "sbr_syntax.h" -#endif -#ifdef SSR_DEC -#include "ssr.h" -#endif - -#ifdef ANALYSIS -uint16_t dbg_count; -#endif - -/* static function declarations */ -static void* aac_frame_decode(NeAACDecHandle hDecoder, NeAACDecFrameInfo *hInfo, - uint8_t *buffer, uint32_t buffer_size, - void **sample_buffer, uint32_t sample_buffer_size); -static void create_channel_config(NeAACDecHandle hDecoder, NeAACDecFrameInfo *hInfo); - - -char* NEAACDECAPI NeAACDecGetErrorMessage(uint8_t errcode) -{ - if (errcode >= NUM_ERROR_MESSAGES) - return NULL; - return err_msg[errcode]; -} - -uint32_t NEAACDECAPI NeAACDecGetCapabilities(void) -{ - uint32_t cap = 0; - - /* can't do without it */ - cap += LC_DEC_CAP; - -#ifdef MAIN_DEC - cap += MAIN_DEC_CAP; -#endif -#ifdef LTP_DEC - cap += LTP_DEC_CAP; -#endif -#ifdef LD_DEC - cap += LD_DEC_CAP; -#endif -#ifdef ERROR_RESILIENCE - cap += ERROR_RESILIENCE_CAP; -#endif -#ifdef FIXED_POINT - cap += FIXED_POINT_CAP; -#endif - - return cap; -} - -NeAACDecHandle NEAACDECAPI NeAACDecOpen(void) -{ - uint8_t i; - NeAACDecHandle hDecoder = NULL; - - if ((hDecoder = (NeAACDecHandle)faad_malloc(sizeof(NeAACDecStruct))) == NULL) - return NULL; - - memset(hDecoder, 0, sizeof(NeAACDecStruct)); - - hDecoder->config.outputFormat = FAAD_FMT_16BIT; - hDecoder->config.defObjectType = MAIN; - hDecoder->config.defSampleRate = 44100; /* Default: 44.1kHz */ - hDecoder->config.downMatrix = 0; - hDecoder->adts_header_present = 0; - hDecoder->adif_header_present = 0; - hDecoder->latm_header_present = 0; -#ifdef ERROR_RESILIENCE - hDecoder->aacSectionDataResilienceFlag = 0; - hDecoder->aacScalefactorDataResilienceFlag = 0; - hDecoder->aacSpectralDataResilienceFlag = 0; -#endif - hDecoder->frameLength = 1024; - - hDecoder->frame = 0; - hDecoder->sample_buffer = NULL; - - for (i = 0; i < MAX_CHANNELS; i++) - { - hDecoder->window_shape_prev[i] = 0; - hDecoder->time_out[i] = NULL; - hDecoder->fb_intermed[i] = NULL; -#ifdef SSR_DEC - hDecoder->ssr_overlap[i] = NULL; - hDecoder->prev_fmd[i] = NULL; -#endif -#ifdef MAIN_DEC - hDecoder->pred_stat[i] = NULL; -#endif -#ifdef LTP_DEC - hDecoder->ltp_lag[i] = 0; - hDecoder->lt_pred_stat[i] = NULL; -#endif - } - -#ifdef SBR_DEC - for (i = 0; i < MAX_SYNTAX_ELEMENTS; i++) - { - hDecoder->sbr[i] = NULL; - } -#endif - - hDecoder->drc = drc_init(REAL_CONST(1.0), REAL_CONST(1.0)); - - return hDecoder; -} - -NeAACDecConfigurationPtr NEAACDECAPI NeAACDecGetCurrentConfiguration(NeAACDecHandle hDecoder) -{ - if (hDecoder) - { - NeAACDecConfigurationPtr config = &(hDecoder->config); - - return config; - } - - return NULL; -} - -uint8_t NEAACDECAPI NeAACDecSetConfiguration(NeAACDecHandle hDecoder, - NeAACDecConfigurationPtr config) -{ - if (hDecoder && config) - { - /* check if we can decode this object type */ - if (can_decode_ot(config->defObjectType) < 0) - return 0; - hDecoder->config.defObjectType = config->defObjectType; - - /* samplerate: anything but 0 should be possible */ - if (config->defSampleRate == 0) - return 0; - hDecoder->config.defSampleRate = config->defSampleRate; - - /* check output format */ -#ifdef FIXED_POINT - if ((config->outputFormat < 1) || (config->outputFormat > 4)) - return 0; -#else - if ((config->outputFormat < 1) || (config->outputFormat > 5)) - return 0; -#endif - hDecoder->config.outputFormat = config->outputFormat; - - if (config->downMatrix > 1) - return 0; - hDecoder->config.downMatrix = config->downMatrix; - - /* OK */ - return 1; - } - - return 0; -} - -static int latmCheck(latm_header *latm, bitfile *ld) -{ - uint32_t good=0, bad=0, bits, m; - - while(!ld->error && !ld->no_more_reading) - { - bits = faad_latm_frame(latm, ld); - if(bits==-1U) - bad++; - else - { - good++; - while(bits>0) - { - m = min(bits, 8); - faad_getbits(ld, m); - bits -= m; - } - } - } - - return (good>0); -} - - -int32_t NEAACDECAPI NeAACDecInit(NeAACDecHandle hDecoder, uint8_t *buffer, - uint32_t buffer_size, - uint32_t *samplerate, uint8_t *channels, int latm_stream) -{ - uint32_t bits = 0; - bitfile ld; - adif_header adif; - adts_header adts; - - if ((hDecoder == NULL) || (samplerate == NULL) || (channels == NULL)) - return -1; - - hDecoder->sf_index = get_sr_index(hDecoder->config.defSampleRate); - hDecoder->object_type = hDecoder->config.defObjectType; - *samplerate = get_sample_rate(hDecoder->sf_index); - *channels = 1; - - if (buffer != NULL) - { - int is_latm; - latm_header *l = &hDecoder->latm_config; - faad_initbits(&ld, buffer, buffer_size); - - memset(l, 0, sizeof(latm_header)); - is_latm = latmCheck(l, &ld); - l->inited = 0; - l->frameLength = 0; - faad_rewindbits(&ld); - if(is_latm && l->ASCbits>0) - { - int32_t x; - hDecoder->latm_header_present = 1; - x = NeAACDecInit2(hDecoder, &l->ASC, (l->ASCbits+7)/8, samplerate, channels); - if(x!=0) - hDecoder->latm_header_present = 0; - return x; - } - else if (latm_stream) { - return -1; - } - else - /* Check if an ADIF header is present */ - if ((buffer[0] == 'A') && (buffer[1] == 'D') && - (buffer[2] == 'I') && (buffer[3] == 'F')) - { - hDecoder->adif_header_present = 1; - - get_adif_header(&adif, &ld); - faad_byte_align(&ld); - - hDecoder->sf_index = adif.pce[0].sf_index; - hDecoder->object_type = adif.pce[0].object_type + 1; - - *samplerate = get_sample_rate(hDecoder->sf_index); - *channels = adif.pce[0].channels; - - memcpy(&(hDecoder->pce), &(adif.pce[0]), sizeof(program_config)); - hDecoder->pce_set = 1; - - bits = bit2byte(faad_get_processed_bits(&ld)); - - /* Check if an ADTS header is present */ - } else if (faad_showbits(&ld, 12) == 0xfff) { - hDecoder->adts_header_present = 1; - - adts.old_format = hDecoder->config.useOldADTSFormat; - adts_frame(&adts, &ld); - - hDecoder->sf_index = adts.sf_index; - hDecoder->object_type = adts.profile + 1; - - *samplerate = get_sample_rate(hDecoder->sf_index); - *channels = (adts.channel_configuration > 6) ? - 2 : adts.channel_configuration; - } - - if (ld.error) - { - faad_endbits(&ld); - return -1; - } - faad_endbits(&ld); - } - hDecoder->channelConfiguration = *channels; - -#if (defined(PS_DEC) || defined(DRM_PS)) - /* check if we have a mono file */ - if (*channels == 1) - { - /* upMatrix to 2 channels for implicit signalling of PS */ - *channels = 2; - } -#endif - -#ifdef SBR_DEC - /* implicit signalling */ - if (*samplerate <= 24000 && !(hDecoder->config.dontUpSampleImplicitSBR)) - { - *samplerate *= 2; - hDecoder->forceUpSampling = 1; - } else if (*samplerate > 24000 && !(hDecoder->config.dontUpSampleImplicitSBR)) { - hDecoder->downSampledSBR = 1; - } -#endif - - /* must be done before frameLength is divided by 2 for LD */ -#ifdef SSR_DEC - if (hDecoder->object_type == SSR) - hDecoder->fb = ssr_filter_bank_init(hDecoder->frameLength/SSR_BANDS); - else -#endif - hDecoder->fb = filter_bank_init(hDecoder->frameLength); - -#ifdef LD_DEC - if (hDecoder->object_type == LD) - hDecoder->frameLength >>= 1; -#endif - - if (can_decode_ot(hDecoder->object_type) < 0) - return -1; - - return bits; -} - -/* Init the library using a DecoderSpecificInfo */ -int8_t NEAACDECAPI NeAACDecInit2(NeAACDecHandle hDecoder, uint8_t *pBuffer, - uint32_t SizeOfDecoderSpecificInfo, - uint32_t *samplerate, uint8_t *channels) -{ - int8_t rc; - mp4AudioSpecificConfig mp4ASC; - - if((hDecoder == NULL) - || (pBuffer == NULL) - || (SizeOfDecoderSpecificInfo < 2) - || (samplerate == NULL) - || (channels == NULL)) - { - return -1; - } - - hDecoder->adif_header_present = 0; - hDecoder->adts_header_present = 0; - - /* decode the audio specific config */ - rc = AudioSpecificConfig2(pBuffer, SizeOfDecoderSpecificInfo, &mp4ASC, - &(hDecoder->pce), hDecoder->latm_header_present); - - /* copy the relevant info to the decoder handle */ - *samplerate = mp4ASC.samplingFrequency; - if (mp4ASC.channelsConfiguration) - { - *channels = mp4ASC.channelsConfiguration; - } else { - *channels = hDecoder->pce.channels; - hDecoder->pce_set = 1; - } -#if (defined(PS_DEC) || defined(DRM_PS)) - /* check if we have a mono file */ - if (*channels == 1) - { - /* upMatrix to 2 channels for implicit signalling of PS */ - *channels = 2; - } -#endif - hDecoder->sf_index = mp4ASC.samplingFrequencyIndex; - hDecoder->object_type = mp4ASC.objectTypeIndex; -#ifdef ERROR_RESILIENCE - hDecoder->aacSectionDataResilienceFlag = mp4ASC.aacSectionDataResilienceFlag; - hDecoder->aacScalefactorDataResilienceFlag = mp4ASC.aacScalefactorDataResilienceFlag; - hDecoder->aacSpectralDataResilienceFlag = mp4ASC.aacSpectralDataResilienceFlag; -#endif -#ifdef SBR_DEC - hDecoder->sbr_present_flag = mp4ASC.sbr_present_flag; - hDecoder->downSampledSBR = mp4ASC.downSampledSBR; - if (hDecoder->config.dontUpSampleImplicitSBR == 0) - hDecoder->forceUpSampling = mp4ASC.forceUpSampling; - else - hDecoder->forceUpSampling = 0; - - /* AAC core decoder samplerate is 2 times as low */ - if (((hDecoder->sbr_present_flag == 1)&&(!hDecoder->downSampledSBR)) || hDecoder->forceUpSampling == 1) - { - hDecoder->sf_index = get_sr_index(mp4ASC.samplingFrequency / 2); - } -#endif - - if (rc != 0) - { - return rc; - } - hDecoder->channelConfiguration = mp4ASC.channelsConfiguration; - if (mp4ASC.frameLengthFlag) -#ifdef ALLOW_SMALL_FRAMELENGTH - hDecoder->frameLength = 960; -#else - return -1; -#endif - - /* must be done before frameLength is divided by 2 for LD */ -#ifdef SSR_DEC - if (hDecoder->object_type == SSR) - hDecoder->fb = ssr_filter_bank_init(hDecoder->frameLength/SSR_BANDS); - else -#endif - hDecoder->fb = filter_bank_init(hDecoder->frameLength); - -#ifdef LD_DEC - if (hDecoder->object_type == LD) - hDecoder->frameLength >>= 1; -#endif - - return 0; -} - -#ifdef DRM -int8_t NEAACDECAPI NeAACDecInitDRM(NeAACDecHandle *hDecoder, uint32_t samplerate, - uint8_t channels) -{ - if (hDecoder == NULL) - return 1; /* error */ - - NeAACDecClose(*hDecoder); - - *hDecoder = NeAACDecOpen(); - - /* Special object type defined for DRM */ - (*hDecoder)->config.defObjectType = DRM_ER_LC; - - (*hDecoder)->config.defSampleRate = samplerate; -#ifdef ERROR_RESILIENCE // This shoudl always be defined for DRM - (*hDecoder)->aacSectionDataResilienceFlag = 1; /* VCB11 */ - (*hDecoder)->aacScalefactorDataResilienceFlag = 0; /* no RVLC */ - (*hDecoder)->aacSpectralDataResilienceFlag = 1; /* HCR */ -#endif - (*hDecoder)->frameLength = 960; - (*hDecoder)->sf_index = get_sr_index((*hDecoder)->config.defSampleRate); - (*hDecoder)->object_type = (*hDecoder)->config.defObjectType; - - if ((channels == DRMCH_STEREO) || (channels == DRMCH_SBR_STEREO)) - (*hDecoder)->channelConfiguration = 2; - else - (*hDecoder)->channelConfiguration = 1; - -#ifdef SBR_DEC - if ((channels == DRMCH_MONO) || (channels == DRMCH_STEREO)) - (*hDecoder)->sbr_present_flag = 0; - else - (*hDecoder)->sbr_present_flag = 1; -#endif - - (*hDecoder)->fb = filter_bank_init((*hDecoder)->frameLength); - - return 0; -} -#endif - -void NEAACDECAPI NeAACDecClose(NeAACDecHandle hDecoder) -{ - uint8_t i; - - if (hDecoder == NULL) - return; - -#ifdef PROFILE - printf("AAC decoder total: %I64d cycles\n", hDecoder->cycles); - printf("requant: %I64d cycles\n", hDecoder->requant_cycles); - printf("spectral_data: %I64d cycles\n", hDecoder->spectral_cycles); - printf("scalefactors: %I64d cycles\n", hDecoder->scalefac_cycles); - printf("output: %I64d cycles\n", hDecoder->output_cycles); -#endif - - for (i = 0; i < MAX_CHANNELS; i++) - { - if (hDecoder->time_out[i]) faad_free(hDecoder->time_out[i]); - if (hDecoder->fb_intermed[i]) faad_free(hDecoder->fb_intermed[i]); -#ifdef SSR_DEC - if (hDecoder->ssr_overlap[i]) faad_free(hDecoder->ssr_overlap[i]); - if (hDecoder->prev_fmd[i]) faad_free(hDecoder->prev_fmd[i]); -#endif -#ifdef MAIN_DEC - if (hDecoder->pred_stat[i]) faad_free(hDecoder->pred_stat[i]); -#endif -#ifdef LTP_DEC - if (hDecoder->lt_pred_stat[i]) faad_free(hDecoder->lt_pred_stat[i]); -#endif - } - -#ifdef SSR_DEC - if (hDecoder->object_type == SSR) - ssr_filter_bank_end(hDecoder->fb); - else -#endif - filter_bank_end(hDecoder->fb); - - drc_end(hDecoder->drc); - - if (hDecoder->sample_buffer) faad_free(hDecoder->sample_buffer); - -#ifdef SBR_DEC - for (i = 0; i < MAX_SYNTAX_ELEMENTS; i++) - { - if (hDecoder->sbr[i]) - sbrDecodeEnd(hDecoder->sbr[i]); - } -#endif - - if (hDecoder) faad_free(hDecoder); -} - -void NEAACDECAPI NeAACDecPostSeekReset(NeAACDecHandle hDecoder, int32_t frame) -{ - if (hDecoder) - { - hDecoder->postSeekResetFlag = 1; - - if (frame != -1) - hDecoder->frame = frame; - } -} - -static void create_channel_config(NeAACDecHandle hDecoder, NeAACDecFrameInfo *hInfo) -{ - hInfo->num_front_channels = 0; - hInfo->num_side_channels = 0; - hInfo->num_back_channels = 0; - hInfo->num_lfe_channels = 0; - memset(hInfo->channel_position, 0, MAX_CHANNELS*sizeof(uint8_t)); - - if (hDecoder->downMatrix) - { - hInfo->num_front_channels = 2; - hInfo->channel_position[0] = FRONT_CHANNEL_LEFT; - hInfo->channel_position[1] = FRONT_CHANNEL_RIGHT; - return; - } - - /* check if there is a PCE */ - if (hDecoder->pce_set) - { - uint8_t i, chpos = 0; - uint8_t chdir, back_center = 0; - - hInfo->num_front_channels = hDecoder->pce.num_front_channels; - hInfo->num_side_channels = hDecoder->pce.num_side_channels; - hInfo->num_back_channels = hDecoder->pce.num_back_channels; - hInfo->num_lfe_channels = hDecoder->pce.num_lfe_channels; - - chdir = hInfo->num_front_channels; - if (chdir & 1) - { - hInfo->channel_position[chpos++] = FRONT_CHANNEL_CENTER; - chdir--; - } - for (i = 0; i < chdir; i += 2) - { - hInfo->channel_position[chpos++] = FRONT_CHANNEL_LEFT; - hInfo->channel_position[chpos++] = FRONT_CHANNEL_RIGHT; - } - - for (i = 0; i < hInfo->num_side_channels; i += 2) - { - hInfo->channel_position[chpos++] = SIDE_CHANNEL_LEFT; - hInfo->channel_position[chpos++] = SIDE_CHANNEL_RIGHT; - } - - chdir = hInfo->num_back_channels; - if (chdir & 1) - { - back_center = 1; - chdir--; - } - for (i = 0; i < chdir; i += 2) - { - hInfo->channel_position[chpos++] = BACK_CHANNEL_LEFT; - hInfo->channel_position[chpos++] = BACK_CHANNEL_RIGHT; - } - if (back_center) - { - hInfo->channel_position[chpos++] = BACK_CHANNEL_CENTER; - } - - for (i = 0; i < hInfo->num_lfe_channels; i++) - { - hInfo->channel_position[chpos++] = LFE_CHANNEL; - } - - } else { - switch (hDecoder->channelConfiguration) - { - case 1: - hInfo->num_front_channels = 1; - hInfo->channel_position[0] = FRONT_CHANNEL_CENTER; - break; - case 2: - hInfo->num_front_channels = 2; - hInfo->channel_position[0] = FRONT_CHANNEL_LEFT; - hInfo->channel_position[1] = FRONT_CHANNEL_RIGHT; - break; - case 3: - hInfo->num_front_channels = 3; - hInfo->channel_position[0] = FRONT_CHANNEL_CENTER; - hInfo->channel_position[1] = FRONT_CHANNEL_LEFT; - hInfo->channel_position[2] = FRONT_CHANNEL_RIGHT; - break; - case 4: - hInfo->num_front_channels = 3; - hInfo->num_back_channels = 1; - hInfo->channel_position[0] = FRONT_CHANNEL_CENTER; - hInfo->channel_position[1] = FRONT_CHANNEL_LEFT; - hInfo->channel_position[2] = FRONT_CHANNEL_RIGHT; - hInfo->channel_position[3] = BACK_CHANNEL_CENTER; - break; - case 5: - hInfo->num_front_channels = 3; - hInfo->num_back_channels = 2; - hInfo->channel_position[0] = FRONT_CHANNEL_CENTER; - hInfo->channel_position[1] = FRONT_CHANNEL_LEFT; - hInfo->channel_position[2] = FRONT_CHANNEL_RIGHT; - hInfo->channel_position[3] = BACK_CHANNEL_LEFT; - hInfo->channel_position[4] = BACK_CHANNEL_RIGHT; - break; - case 6: - hInfo->num_front_channels = 3; - hInfo->num_back_channels = 2; - hInfo->num_lfe_channels = 1; - hInfo->channel_position[0] = FRONT_CHANNEL_CENTER; - hInfo->channel_position[1] = FRONT_CHANNEL_LEFT; - hInfo->channel_position[2] = FRONT_CHANNEL_RIGHT; - hInfo->channel_position[3] = BACK_CHANNEL_LEFT; - hInfo->channel_position[4] = BACK_CHANNEL_RIGHT; - hInfo->channel_position[5] = LFE_CHANNEL; - break; - case 7: - hInfo->num_front_channels = 3; - hInfo->num_side_channels = 2; - hInfo->num_back_channels = 2; - hInfo->num_lfe_channels = 1; - hInfo->channel_position[0] = FRONT_CHANNEL_CENTER; - hInfo->channel_position[1] = FRONT_CHANNEL_LEFT; - hInfo->channel_position[2] = FRONT_CHANNEL_RIGHT; - hInfo->channel_position[3] = SIDE_CHANNEL_LEFT; - hInfo->channel_position[4] = SIDE_CHANNEL_RIGHT; - hInfo->channel_position[5] = BACK_CHANNEL_LEFT; - hInfo->channel_position[6] = BACK_CHANNEL_RIGHT; - hInfo->channel_position[7] = LFE_CHANNEL; - break; - default: /* channelConfiguration == 0 || channelConfiguration > 7 */ - { - uint8_t i; - uint8_t ch = hDecoder->fr_channels - hDecoder->has_lfe; - if (ch & 1) /* there's either a center front or a center back channel */ - { - uint8_t ch1 = (ch-1)/2; - if (hDecoder->first_syn_ele == ID_SCE) - { - hInfo->num_front_channels = ch1 + 1; - hInfo->num_back_channels = ch1; - hInfo->channel_position[0] = FRONT_CHANNEL_CENTER; - for (i = 1; i <= ch1; i+=2) - { - hInfo->channel_position[i] = FRONT_CHANNEL_LEFT; - hInfo->channel_position[i+1] = FRONT_CHANNEL_RIGHT; - } - for (i = ch1+1; i < ch; i+=2) - { - hInfo->channel_position[i] = BACK_CHANNEL_LEFT; - hInfo->channel_position[i+1] = BACK_CHANNEL_RIGHT; - } - } else { - hInfo->num_front_channels = ch1; - hInfo->num_back_channels = ch1 + 1; - for (i = 0; i < ch1; i+=2) - { - hInfo->channel_position[i] = FRONT_CHANNEL_LEFT; - hInfo->channel_position[i+1] = FRONT_CHANNEL_RIGHT; - } - for (i = ch1; i < ch-1; i+=2) - { - hInfo->channel_position[i] = BACK_CHANNEL_LEFT; - hInfo->channel_position[i+1] = BACK_CHANNEL_RIGHT; - } - hInfo->channel_position[ch-1] = BACK_CHANNEL_CENTER; - } - } else { - uint8_t ch1 = (ch)/2; - hInfo->num_front_channels = ch1; - hInfo->num_back_channels = ch1; - if (ch1 & 1) - { - hInfo->channel_position[0] = FRONT_CHANNEL_CENTER; - for (i = 1; i <= ch1; i+=2) - { - hInfo->channel_position[i] = FRONT_CHANNEL_LEFT; - hInfo->channel_position[i+1] = FRONT_CHANNEL_RIGHT; - } - for (i = ch1+1; i < ch-1; i+=2) - { - hInfo->channel_position[i] = BACK_CHANNEL_LEFT; - hInfo->channel_position[i+1] = BACK_CHANNEL_RIGHT; - } - hInfo->channel_position[ch-1] = BACK_CHANNEL_CENTER; - } else { - for (i = 0; i < ch1; i+=2) - { - hInfo->channel_position[i] = FRONT_CHANNEL_LEFT; - hInfo->channel_position[i+1] = FRONT_CHANNEL_RIGHT; - } - for (i = ch1; i < ch; i+=2) - { - hInfo->channel_position[i] = BACK_CHANNEL_LEFT; - hInfo->channel_position[i+1] = BACK_CHANNEL_RIGHT; - } - } - } - hInfo->num_lfe_channels = hDecoder->has_lfe; - for (i = ch; i < hDecoder->fr_channels; i++) - { - hInfo->channel_position[i] = LFE_CHANNEL; - } - } - break; - } - } -} - -void* NEAACDECAPI NeAACDecDecode(NeAACDecHandle hDecoder, - NeAACDecFrameInfo *hInfo, - uint8_t *buffer, uint32_t buffer_size) -{ - return aac_frame_decode(hDecoder, hInfo, buffer, buffer_size, NULL, 0); -} - -void* NEAACDECAPI NeAACDecDecode2(NeAACDecHandle hDecoder, - NeAACDecFrameInfo *hInfo, - uint8_t *buffer, uint32_t buffer_size, - void **sample_buffer, uint32_t sample_buffer_size) -{ - if ((sample_buffer == NULL) || (sample_buffer_size == 0)) - { - hInfo->error = 27; - return NULL; - } - - return aac_frame_decode(hDecoder, hInfo, buffer, buffer_size, - sample_buffer, sample_buffer_size); -} - -static void* aac_frame_decode(NeAACDecHandle hDecoder, NeAACDecFrameInfo *hInfo, - uint8_t *buffer, uint32_t buffer_size, - void **sample_buffer2, uint32_t sample_buffer_size) -{ - uint8_t channels = 0; - uint8_t output_channels = 0; - bitfile ld; - uint32_t bitsconsumed; - uint16_t frame_len; - void *sample_buffer; - uint32_t startbit=0, endbit=0, payload_bits=0; - -#ifdef PROFILE - int64_t count = faad_get_ts(); -#endif - - /* safety checks */ - if ((hDecoder == NULL) || (hInfo == NULL) || (buffer == NULL)) - { - return NULL; - } - -#if 0 - printf("%d\n", buffer_size*8); -#endif - - frame_len = hDecoder->frameLength; - - - memset(hInfo, 0, sizeof(NeAACDecFrameInfo)); - memset(hDecoder->internal_channel, 0, MAX_CHANNELS*sizeof(hDecoder->internal_channel[0])); - - /* initialize the bitstream */ - faad_initbits(&ld, buffer, buffer_size); - -#if 0 - { - int i; - for (i = 0; i < ((buffer_size+3)>>2); i++) - { - uint8_t *buf; - uint32_t temp = 0; - buf = faad_getbitbuffer(&ld, 32); - //temp = getdword((void*)buf); - temp = *((uint32_t*)buf); - printf("0x%.8X\n", temp); - free(buf); - } - faad_endbits(&ld); - faad_initbits(&ld, buffer, buffer_size); - } -#endif - - if(hDecoder->latm_header_present) - { - payload_bits = faad_latm_frame(&hDecoder->latm_config, &ld); - startbit = faad_get_processed_bits(&ld); - if(payload_bits == -1U) - { - hInfo->error = 1; - goto error; - } - } - -#ifdef DRM - if (hDecoder->object_type == DRM_ER_LC) - { - /* We do not support stereo right now */ - if (0) //(hDecoder->channelConfiguration == 2) - { - hInfo->error = 8; // Throw CRC error - goto error; - } - - faad_getbits(&ld, 8 - DEBUGVAR(1,1,"NeAACDecDecode(): skip CRC")); - } -#endif - - if (hDecoder->adts_header_present) - { - adts_header adts; - - adts.old_format = hDecoder->config.useOldADTSFormat; - if ((hInfo->error = adts_frame(&adts, &ld)) > 0) - goto error; - - /* MPEG2 does byte_alignment() here, - * but ADTS header is always multiple of 8 bits in MPEG2 - * so not needed to actually do it. - */ - } - -#ifdef ANALYSIS - dbg_count = 0; -#endif - - /* decode the complete bitstream */ -#ifdef SCALABLE_DEC - if ((hDecoder->object_type == 6) || (hDecoder->object_type == DRM_ER_LC)) - { - aac_scalable_main_element(hDecoder, hInfo, &ld, &hDecoder->pce, hDecoder->drc); - } else { -#endif - raw_data_block(hDecoder, hInfo, &ld, &hDecoder->pce, hDecoder->drc); -#ifdef SCALABLE_DEC - } -#endif - - if(hDecoder->latm_header_present) - { - endbit = faad_get_processed_bits(&ld); - if(endbit-startbit > payload_bits) - fprintf(stderr, "\r\nERROR, too many payload bits read: %u > %d. Please. report with a link to a sample\n", - endbit-startbit, payload_bits); - if(hDecoder->latm_config.otherDataLenBits > 0) - faad_getbits(&ld, hDecoder->latm_config.otherDataLenBits); - faad_byte_align(&ld); - } - - channels = hDecoder->fr_channels; - - if (hInfo->error > 0) - goto error; - - /* safety check */ - if (channels == 0 || channels > MAX_CHANNELS) - { - /* invalid number of channels */ - hInfo->error = 12; - goto error; - } - - /* no more bit reading after this */ - bitsconsumed = faad_get_processed_bits(&ld); - hInfo->bytesconsumed = bit2byte(bitsconsumed); - if (ld.error) - { - hInfo->error = 14; - goto error; - } - faad_endbits(&ld); - - - if (!hDecoder->adts_header_present && !hDecoder->adif_header_present && !hDecoder->latm_header_present) - { - if (hDecoder->channelConfiguration == 0) - hDecoder->channelConfiguration = channels; - - if (channels == 8) /* 7.1 */ - hDecoder->channelConfiguration = 7; - if (channels == 7) /* not a standard channelConfiguration */ - hDecoder->channelConfiguration = 0; - } - - if ((channels == 5 || channels == 6) && hDecoder->config.downMatrix) - { - hDecoder->downMatrix = 1; - output_channels = 2; - } else { - output_channels = channels; - } - -#if (defined(PS_DEC) || defined(DRM_PS)) - hDecoder->upMatrix = 0; - /* check if we have a mono file */ - if (output_channels == 1) - { - /* upMatrix to 2 channels for implicit signalling of PS */ - hDecoder->upMatrix = 1; - output_channels = 2; - } -#endif - - /* Make a channel configuration based on either a PCE or a channelConfiguration */ - create_channel_config(hDecoder, hInfo); - - /* number of samples in this frame */ - hInfo->samples = frame_len*output_channels; - /* number of channels in this frame */ - hInfo->channels = output_channels; - /* samplerate */ - hInfo->samplerate = get_sample_rate(hDecoder->sf_index); - /* object type */ - hInfo->object_type = hDecoder->object_type; - /* sbr */ - hInfo->sbr = NO_SBR; - /* header type */ - hInfo->header_type = RAW; - if (hDecoder->adif_header_present) - hInfo->header_type = ADIF; - if (hDecoder->adts_header_present) - hInfo->header_type = ADTS; - if (hDecoder->latm_header_present) - hInfo->header_type = LATM; -#if (defined(PS_DEC) || defined(DRM_PS)) - hInfo->ps = hDecoder->ps_used_global; -#endif - - /* check if frame has channel elements */ - if (channels == 0) - { - hDecoder->frame++; - return NULL; - } - - /* allocate the buffer for the final samples */ - if ((hDecoder->sample_buffer == NULL) || - (hDecoder->alloced_channels != output_channels)) - { - static const uint8_t str[] = { sizeof(int16_t), sizeof(int32_t), sizeof(int32_t), - sizeof(float32_t), sizeof(double), sizeof(int16_t), sizeof(int16_t), - sizeof(int16_t), sizeof(int16_t), 0, 0, 0 - }; - uint8_t stride = str[hDecoder->config.outputFormat-1]; -#ifdef SBR_DEC - if (((hDecoder->sbr_present_flag == 1)&&(!hDecoder->downSampledSBR)) || (hDecoder->forceUpSampling == 1)) - { - stride = 2 * stride; - } -#endif - /* check if we want to use internal sample_buffer */ - if (sample_buffer_size == 0) - { - if (hDecoder->sample_buffer) - faad_free(hDecoder->sample_buffer); - hDecoder->sample_buffer = NULL; - hDecoder->sample_buffer = faad_malloc(frame_len*output_channels*stride); - } else if (sample_buffer_size < frame_len*output_channels*stride) { - /* provided sample buffer is not big enough */ - hInfo->error = 27; - return NULL; - } - hDecoder->alloced_channels = output_channels; - } - - if (sample_buffer_size == 0) - { - sample_buffer = hDecoder->sample_buffer; - } else { - sample_buffer = *sample_buffer2; - } - -#ifdef SBR_DEC - if ((hDecoder->sbr_present_flag == 1) || (hDecoder->forceUpSampling == 1)) - { - uint8_t ele; - - /* this data is different when SBR is used or when the data is upsampled */ - if (!hDecoder->downSampledSBR) - { - frame_len *= 2; - hInfo->samples *= 2; - hInfo->samplerate *= 2; - } - - /* check if every element was provided with SBR data */ - for (ele = 0; ele < hDecoder->fr_ch_ele; ele++) - { - if (hDecoder->sbr[ele] == NULL) - { - hInfo->error = 25; - goto error; - } - } - - /* sbr */ - if (hDecoder->sbr_present_flag == 1) - { - hInfo->object_type = HE_AAC; - hInfo->sbr = SBR_UPSAMPLED; - } else { - hInfo->sbr = NO_SBR_UPSAMPLED; - } - if (hDecoder->downSampledSBR) - { - hInfo->sbr = SBR_DOWNSAMPLED; - } - } -#endif - - sample_buffer = output_to_PCM(hDecoder, hDecoder->time_out, sample_buffer, - output_channels, frame_len, hDecoder->config.outputFormat); - - - hDecoder->postSeekResetFlag = 0; - - hDecoder->frame++; -#ifdef LD_DEC - if (hDecoder->object_type != LD) - { -#endif - if (hDecoder->frame <= 1) - hInfo->samples = 0; -#ifdef LD_DEC - } else { - /* LD encoders will give lower delay */ - if (hDecoder->frame <= 0) - hInfo->samples = 0; - } -#endif - - /* cleanup */ -#ifdef ANALYSIS - fflush(stdout); -#endif - -#ifdef PROFILE - count = faad_get_ts() - count; - hDecoder->cycles += count; -#endif - - return sample_buffer; - -error: - - faad_endbits(&ld); - - /* cleanup */ -#ifdef ANALYSIS - fflush(stdout); -#endif - - return NULL; -} -- cgit v1.2.3