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authorSean Bartell <wingedtachikoma@gmail.com>2011-06-25 21:32:25 -0400
committerNils Wallménius <nils@rockbox.org>2012-04-25 22:13:20 +0200
commitf40bfc9267b13b54e6379dfe7539447662879d24 (patch)
tree9b20069d5e62809ff434061ad730096836f916f2 /apps/codecs/libfaad/decoder.c
parenta0009907de7a0107d49040d8a180f140e2eff299 (diff)
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Add codecs to librbcodec.
Change-Id: Id7f4717d51ed02d67cb9f9cb3c0ada4a81843f97 Reviewed-on: http://gerrit.rockbox.org/137 Reviewed-by: Nils Wallménius <nils@rockbox.org> Tested-by: Nils Wallménius <nils@rockbox.org>
Diffstat (limited to 'apps/codecs/libfaad/decoder.c')
-rw-r--r--apps/codecs/libfaad/decoder.c1029
1 files changed, 0 insertions, 1029 deletions
diff --git a/apps/codecs/libfaad/decoder.c b/apps/codecs/libfaad/decoder.c
deleted file mode 100644
index d68d093b0b..0000000000
--- a/apps/codecs/libfaad/decoder.c
+++ /dev/null
@@ -1,1029 +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.
-**
-** $Id$
-**/
-
-#include "common.h"
-#include "structs.h"
-
-#include <stdlib.h>
-#include <string.h>
-
-#include "decoder.h"
-#include "mp4.h"
-#include "syntax.h"
-#include "error.h"
-/* rockbox: not used
-#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
-
-/* Globals */
-#ifdef ANALYSIS
-uint16_t dbg_count;
-#endif
-
-/* static variables */
-static NeAACDecStruct s_AACDec;
-static real_t s_fb_intermed [MAX_CHANNELS][1*FRAME_LEN] IBSS_ATTR_FAAD_LARGE_IRAM MEM_ALIGN_ATTR;
-static real_t s_time_buf_1024[MAX_CHANNELS][1*FRAME_LEN] IBSS_ATTR_FAAD_LARGE_IRAM MEM_ALIGN_ATTR;
-#ifdef SBR_DEC
-#ifdef FAAD_STATIC_ALLOC
-static real_t s_time_buf_2048[MAX_CHANNELS][2*FRAME_LEN] MEM_ALIGN_ATTR;
-#endif
-#endif
-#ifdef SSR_DEC
-static real_t s_ssr_overlap [MAX_CHANNELS][2*FRAME_LEN] MEM_ALIGN_ATTR;
-static real_t s_prev_fmd [MAX_CHANNELS][2*FRAME_LEN] MEM_ALIGN_ATTR;
-#endif
-#ifdef MAIN_DEC
-static pred_state s_pred_stat[MAX_CHANNELS][1*FRAME_LEN] MEM_ALIGN_ATTR;
-#endif
-#ifdef LTP_DEC
-static int16_t s_lt_pred_stat[MAX_CHANNELS][4*FRAME_LEN] MEM_ALIGN_ATTR;
-#endif
-
-
-/* static function declarations */
-static void* aac_frame_decode(NeAACDecHandle hDecoder, NeAACDecFrameInfo *hInfo,
- uint8_t *buffer, uint32_t buffer_size);
-/* not used by rockbox
-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];
-}
-
-/* rockbox: not used */
-#if 0
-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;
-}
-#endif
-
-NeAACDecHandle NEAACDECAPI NeAACDecOpen(void)
-{
- uint8_t i;
- NeAACDecHandle hDecoder = NULL;
-
- #if defined(CPU_COLDFIRE)
- coldfire_set_macsr(EMAC_FRACTIONAL | EMAC_SATURATE);
- #endif
-
- hDecoder = &s_AACDec;
-
- memset(hDecoder , 0, sizeof(NeAACDecStruct));
- memset(s_fb_intermed, 0, sizeof(s_fb_intermed));
-#ifdef SSR_DEC
- memset(s_ssr_overlap, 0, sizeof(s_ssr_overlap));
- memset(s_prev_fmd , 0, sizeof(s_prev_fmd));
-#endif
-#ifdef LTP_DEC
- memset(s_lt_pred_stat, 0, sizeof(s_s_lt_pred_statpred_stat));
-#endif
-
- hDecoder->config.outputFormat = FAAD_FMT_16BIT;
- hDecoder->config.defObjectType = MAIN;
- hDecoder->config.defSampleRate = 44100;
- hDecoder->config.downMatrix = 0;
- hDecoder->adts_header_present = 0;
- hDecoder->adif_header_present = 0;
-#ifdef ERROR_RESILIENCE
- hDecoder->aacSectionDataResilienceFlag = 0;
- hDecoder->aacScalefactorDataResilienceFlag = 0;
- hDecoder->aacSpectralDataResilienceFlag = 0;
-#endif
- hDecoder->frameLength = FRAME_LEN;
-
- hDecoder->frame = 0;
-
- for (i = 0; i < MAX_CHANNELS; i++)
- {
- hDecoder->window_shape_prev[i] = 0;
- hDecoder->time_out[i] = NULL;
- hDecoder->fb_intermed[i] = s_fb_intermed[i];
-#ifdef SSR_DEC
- hDecoder->ssr_overlap[i] = s_ssr_overlap[i];
- hDecoder->prev_fmd[i] = s_prev_fmd[i];
- for (int k = 0; k < 2048; k++)
- hDecoder->prev_fmd[i][k] = REAL_CONST(-1);
-#endif
-#ifdef MAIN_DEC
- hDecoder->pred_stat[i] = s_pred_stat[i];
- reset_all_predictors(hDecoder->pred_stat[channel], FRAME_LEN);
-#endif
-#ifdef LTP_DEC
- hDecoder->ltp_lag[i] = 0;
- hDecoder->lt_pred_stat[i] = s_lt_pred_stat[i];
-#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;
-}
-
-int32_t NEAACDECAPI NeAACDecInit(NeAACDecHandle hDecoder, uint8_t *buffer,
- uint32_t buffer_size,
- uint32_t *samplerate, uint8_t *channels)
-{
- uint32_t i;
- 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)
- {
- faad_initbits(&ld, buffer, buffer_size);
-
- /* 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
-
- /* A maximum of MAX_CHANNELS channels is supported. */
- if (*channels > MAX_CHANNELS)
- {
- return -1;
- }
-
-#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
-
-
-#ifdef LD_DEC
- if (hDecoder->object_type == LD)
- hDecoder->frameLength >>= 1;
-#endif
-
- for (i=0; i<MAX_CHANNELS; ++i)
- {
-#ifdef SBR_DEC
- hDecoder->sbr_alloced[hDecoder->fr_ch_ele] = 0;
- if ((hDecoder->sbr_present_flag == 1) || (hDecoder->forceUpSampling == 1))
- {
-#ifdef FAAD_STATIC_ALLOC
- hDecoder->time_out[i] = s_time_buf_2048[i];
-#else
- hDecoder->time_out[i] = (real_t*)faad_malloc(2*FRAME_LEN*sizeof(real_t));
- if (hDecoder->time_out[i] == NULL)
- {
- /* could not allocate memory */
- return -1;
- }
-#endif
- memset(hDecoder->time_out[i], 0, 2*FRAME_LEN);
- hDecoder->sbr_alloced[hDecoder->fr_ch_ele] = 1;
- }
- else
-#endif
- {
- hDecoder->time_out[i] = s_time_buf_1024[i];
- memset(hDecoder->time_out[i], 0, 1*FRAME_LEN);
- }
- }
-
- 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;
- uint32_t i;
- 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));
-
- /* 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
-
- /* A maximum of MAX_CHANNELS channels is supported. */
- if (*channels > MAX_CHANNELS)
- {
- return -1;
- }
-
- 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
-
-#ifdef LD_DEC
- if (hDecoder->object_type == LD)
- hDecoder->frameLength >>= 1;
-#endif
-
- for (i=0; i<MAX_CHANNELS; ++i)
- {
-#ifdef SBR_DEC
- hDecoder->sbr_alloced[hDecoder->fr_ch_ele] = 0;
- if ((hDecoder->sbr_present_flag == 1) || (hDecoder->forceUpSampling == 1))
- {
-#ifdef FAAD_STATIC_ALLOC
- hDecoder->time_out[i] = s_time_buf_2048[i];
-#else
- hDecoder->time_out[i] = (real_t*)faad_malloc(2*FRAME_LEN*sizeof(real_t));
- if (hDecoder->time_out[i] == NULL)
- {
- /* could not allocate memory */
- return -1;
- }
-#endif
- memset(hDecoder->time_out[i], 0, 2*FRAME_LEN);
- hDecoder->sbr_alloced[hDecoder->fr_ch_ele] = 1;
- }
- else
-#endif
- {
- hDecoder->time_out[i] = s_time_buf_1024[i];
- memset(hDecoder->time_out[i], 0, 1*FRAME_LEN);
- }
- }
-
- return 0;
-}
-
-#ifdef DRM
-int8_t NEAACDECAPI NeAACDecInitDRM(NeAACDecHandle *hDecoder, uint32_t samplerate,
- uint8_t channels)
-{
- if (hDecoder == NULL)
- return 1; /* error */
-
- *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
-
-
- return 0;
-}
-#endif
-
-void NEAACDECAPI NeAACDecPostSeekReset(NeAACDecHandle hDecoder, int32_t frame)
-{
- if (hDecoder)
- {
- hDecoder->postSeekResetFlag = 1;
-
- if (frame != -1)
- hDecoder->frame = frame;
- }
-}
-
-/* not used by rockbox */
-#if 0
-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;
- }
- }
-}
-#endif
-
-void* NEAACDECAPI NeAACDecDecode(NeAACDecHandle hDecoder,
- NeAACDecFrameInfo *hInfo,
- uint8_t *buffer, uint32_t buffer_size)
-{
- return aac_frame_decode(hDecoder, hInfo, buffer, buffer_size);
-}
-
-static void* aac_frame_decode(NeAACDecHandle hDecoder, NeAACDecFrameInfo *hInfo,
- uint8_t *buffer, uint32_t buffer_size)
-{
- uint8_t channels = 0;
- uint8_t output_channels = 0;
- bitfile ld;
- uint32_t bitsconsumed;
- uint16_t frame_len;
-
-#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
-
-#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
-
- 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)
- {
- 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 */
- /* not used by rockbox
- 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 (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->alloced_channels != output_channels)
- {
- hDecoder->alloced_channels = output_channels;
- }
-
-#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
-
- 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 hDecoder; /* return void* != NULL */
-
-error:
-
- faad_endbits(&ld);
-
- /* cleanup */
-#ifdef ANALYSIS
- fflush(stdout);
-#endif
-
- return NULL;
-}