ref: 8f67aea4006734f72e71cb425e0036b30e27cd49
dir: /libfaac/frame.c/
/* * FAAC - Freeware Advanced Audio Coder * Copyright (C) 2001 Menno Bakker * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #include <stdio.h> #include <stdlib.h> #include <assert.h> #include <string.h> #include "frame.h" #include "coder.h" #include "channels.h" #include "bitstream.h" #include "filtbank.h" #include "util.h" #include "tns.h" #include "stereo.h" static char *libfaacName = PACKAGE_VERSION; static char *libCopyright = "FAAC - Freeware Advanced Audio Coder (http://faac.sourceforge.net/)\n" " Copyright (C) 1999,2000,2001 Menno Bakker\n" " Copyright (C) 2002,2003,2017 Krzysztof Nikiel\n" "This software is based on the ISO MPEG-4 reference source code.\n"; static const psymodellist_t psymodellist[] = { {&psymodel2, "knipsycho psychoacoustic"}, {NULL} }; static SR_INFO srInfo[12+1]; // default bandwidth/samplerate ratio static const struct { double fac; double freq; } g_bw = {0.42, 18000}; int FAACAPI faacEncGetVersion( char **faac_id_string, char **faac_copyright_string) { if (faac_id_string) *faac_id_string = libfaacName; if (faac_copyright_string) *faac_copyright_string = libCopyright; return FAAC_CFG_VERSION; } int FAACAPI faacEncGetDecoderSpecificInfo(faacEncHandle hpEncoder,unsigned char** ppBuffer,unsigned long* pSizeOfDecoderSpecificInfo) { faacEncStruct* hEncoder = (faacEncStruct*)hpEncoder; BitStream* pBitStream = NULL; if((hEncoder == NULL) || (ppBuffer == NULL) || (pSizeOfDecoderSpecificInfo == NULL)) { return -1; } if(hEncoder->config.mpegVersion == MPEG2){ return -2; /* not supported */ } *pSizeOfDecoderSpecificInfo = 2; *ppBuffer = malloc(2); if(*ppBuffer != NULL){ memset(*ppBuffer,0,*pSizeOfDecoderSpecificInfo); pBitStream = OpenBitStream(*pSizeOfDecoderSpecificInfo, *ppBuffer); PutBit(pBitStream, hEncoder->config.aacObjectType, 5); PutBit(pBitStream, hEncoder->sampleRateIdx, 4); PutBit(pBitStream, hEncoder->numChannels, 4); CloseBitStream(pBitStream); return 0; } else { return -3; } } faacEncConfigurationPtr FAACAPI faacEncGetCurrentConfiguration(faacEncHandle hpEncoder) { faacEncStruct* hEncoder = (faacEncStruct*)hpEncoder; faacEncConfigurationPtr config = &(hEncoder->config); return config; } int FAACAPI faacEncSetConfiguration(faacEncHandle hpEncoder, faacEncConfigurationPtr config) { faacEncStruct* hEncoder = (faacEncStruct*)hpEncoder; int i; int maxqual = hEncoder->config.outputFormat ? MAXQUALADTS : MAXQUAL; hEncoder->config.jointmode = config->jointmode; hEncoder->config.useLfe = config->useLfe; hEncoder->config.useTns = config->useTns; hEncoder->config.aacObjectType = config->aacObjectType; hEncoder->config.mpegVersion = config->mpegVersion; hEncoder->config.outputFormat = config->outputFormat; hEncoder->config.inputFormat = config->inputFormat; hEncoder->config.shortctl = config->shortctl; assert((hEncoder->config.outputFormat == 0) || (hEncoder->config.outputFormat == 1)); switch( hEncoder->config.inputFormat ) { case FAAC_INPUT_16BIT: //case FAAC_INPUT_24BIT: case FAAC_INPUT_32BIT: case FAAC_INPUT_FLOAT: break; default: return 0; break; } if (hEncoder->config.aacObjectType != LOW) return 0; #ifdef DRM config->pnslevel = 0; #endif /* Re-init TNS for new profile */ TnsInit(hEncoder); /* Check for correct bitrate */ if (config->bitRate > (MaxBitrate(hEncoder->sampleRate) / hEncoder->numChannels)) config->bitRate = MaxBitrate(hEncoder->sampleRate) / hEncoder->numChannels; #if 0 if (config->bitRate < MinBitrate()) return 0; #endif if (config->bitRate && !config->bandWidth) { config->bandWidth = (double)config->bitRate * hEncoder->sampleRate * g_bw.fac / 50000.0; if (config->bandWidth > g_bw.freq) config->bandWidth = g_bw.freq; if (!config->quantqual) { config->quantqual = (double)config->bitRate * hEncoder->numChannels / 1280; if (config->quantqual > 100) config->quantqual = (config->quantqual - 100) * 3.0 + 100; } } if (!config->quantqual) config->quantqual = DEFQUAL; hEncoder->config.bitRate = config->bitRate; if (!config->bandWidth) { config->bandWidth = g_bw.fac * hEncoder->sampleRate; } hEncoder->config.bandWidth = config->bandWidth; // check bandwidth if (hEncoder->config.bandWidth < 100) hEncoder->config.bandWidth = 100; if (hEncoder->config.bandWidth > (hEncoder->sampleRate / 2)) hEncoder->config.bandWidth = hEncoder->sampleRate / 2; if (config->quantqual > maxqual) config->quantqual = maxqual; if (config->quantqual < MINQUAL) config->quantqual = MINQUAL; hEncoder->config.quantqual = config->quantqual; if (config->jointmode == JOINT_MS) config->pnslevel = 0; if (config->pnslevel < 0) config->pnslevel = 0; if (config->pnslevel > 10) config->pnslevel = 10; hEncoder->aacquantCfg.pnslevel = config->pnslevel; /* set quantization quality */ hEncoder->aacquantCfg.quality = config->quantqual; CalcBW(&hEncoder->config.bandWidth, hEncoder->sampleRate, hEncoder->srInfo, &hEncoder->aacquantCfg); // reset psymodel hEncoder->psymodel->PsyEnd(&hEncoder->gpsyInfo, hEncoder->psyInfo, hEncoder->numChannels); if (config->psymodelidx >= (sizeof(psymodellist) / sizeof(psymodellist[0]) - 1)) config->psymodelidx = (sizeof(psymodellist) / sizeof(psymodellist[0])) - 2; hEncoder->config.psymodelidx = config->psymodelidx; hEncoder->psymodel = (psymodel_t *)psymodellist[hEncoder->config.psymodelidx].ptr; hEncoder->psymodel->PsyInit(&hEncoder->gpsyInfo, hEncoder->psyInfo, hEncoder->numChannels, hEncoder->sampleRate, hEncoder->srInfo->cb_width_long, hEncoder->srInfo->num_cb_long, hEncoder->srInfo->cb_width_short, hEncoder->srInfo->num_cb_short); /* load channel_map */ for( i = 0; i < MAX_CHANNELS; i++ ) hEncoder->config.channel_map[i] = config->channel_map[i]; /* OK */ return 1; } faacEncHandle FAACAPI faacEncOpen(unsigned long sampleRate, unsigned int numChannels, unsigned long *inputSamples, unsigned long *maxOutputBytes) { unsigned int channel; faacEncStruct* hEncoder; if (numChannels > MAX_CHANNELS) return NULL; *inputSamples = FRAME_LEN*numChannels; *maxOutputBytes = ADTS_FRAMESIZE; #ifdef DRM *maxOutputBytes += 1; /* for CRC */ #endif hEncoder = (faacEncStruct*)AllocMemory(sizeof(faacEncStruct)); SetMemory(hEncoder, 0, sizeof(faacEncStruct)); hEncoder->numChannels = numChannels; hEncoder->sampleRate = sampleRate; hEncoder->sampleRateIdx = GetSRIndex(sampleRate); /* Initialize variables to default values */ hEncoder->frameNum = 0; hEncoder->flushFrame = 0; /* Default configuration */ hEncoder->config.version = FAAC_CFG_VERSION; hEncoder->config.name = libfaacName; hEncoder->config.copyright = libCopyright; hEncoder->config.mpegVersion = MPEG4; hEncoder->config.aacObjectType = LOW; hEncoder->config.jointmode = JOINT_IS; hEncoder->config.pnslevel = 4; hEncoder->config.useLfe = 1; hEncoder->config.useTns = 0; hEncoder->config.bitRate = 64000; hEncoder->config.bandWidth = g_bw.fac * hEncoder->sampleRate; hEncoder->config.quantqual = 0; hEncoder->config.psymodellist = (psymodellist_t *)psymodellist; hEncoder->config.psymodelidx = 0; hEncoder->psymodel = (psymodel_t *)hEncoder->config.psymodellist[hEncoder->config.psymodelidx].ptr; hEncoder->config.shortctl = SHORTCTL_NORMAL; /* default channel map is straight-through */ for( channel = 0; channel < MAX_CHANNELS; channel++ ) hEncoder->config.channel_map[channel] = channel; hEncoder->config.outputFormat = ADTS_STREAM; /* be compatible with software which assumes 24bit in 32bit PCM */ hEncoder->config.inputFormat = FAAC_INPUT_32BIT; /* find correct sampling rate depending parameters */ hEncoder->srInfo = &srInfo[hEncoder->sampleRateIdx]; for (channel = 0; channel < numChannels; channel++) { hEncoder->coderInfo[channel].prev_window_shape = SINE_WINDOW; hEncoder->coderInfo[channel].window_shape = SINE_WINDOW; hEncoder->coderInfo[channel].block_type = ONLY_LONG_WINDOW; hEncoder->coderInfo[channel].groups.n = 1; hEncoder->coderInfo[channel].groups.len[0] = 1; hEncoder->sampleBuff[channel] = NULL; hEncoder->nextSampleBuff[channel] = NULL; hEncoder->next2SampleBuff[channel] = NULL; } /* Initialize coder functions */ fft_initialize( &hEncoder->fft_tables ); hEncoder->psymodel->PsyInit(&hEncoder->gpsyInfo, hEncoder->psyInfo, hEncoder->numChannels, hEncoder->sampleRate, hEncoder->srInfo->cb_width_long, hEncoder->srInfo->num_cb_long, hEncoder->srInfo->cb_width_short, hEncoder->srInfo->num_cb_short); FilterBankInit(hEncoder); TnsInit(hEncoder); /* Return handle */ return hEncoder; } int FAACAPI faacEncClose(faacEncHandle hpEncoder) { faacEncStruct* hEncoder = (faacEncStruct*)hpEncoder; unsigned int channel; /* Deinitialize coder functions */ hEncoder->psymodel->PsyEnd(&hEncoder->gpsyInfo, hEncoder->psyInfo, hEncoder->numChannels); FilterBankEnd(hEncoder); fft_terminate(&hEncoder->fft_tables); /* Free remaining buffer memory */ for (channel = 0; channel < hEncoder->numChannels; channel++) { if (hEncoder->sampleBuff[channel]) FreeMemory(hEncoder->sampleBuff[channel]); if (hEncoder->nextSampleBuff[channel]) FreeMemory(hEncoder->nextSampleBuff[channel]); if (hEncoder->next2SampleBuff[channel]) FreeMemory (hEncoder->next2SampleBuff[channel]); if (hEncoder->next3SampleBuff[channel]) FreeMemory (hEncoder->next3SampleBuff[channel]); } /* Free handle */ if (hEncoder) FreeMemory(hEncoder); BlocStat(); return 0; } int FAACAPI faacEncEncode(faacEncHandle hpEncoder, int32_t *inputBuffer, unsigned int samplesInput, unsigned char *outputBuffer, unsigned int bufferSize ) { faacEncStruct* hEncoder = (faacEncStruct*)hpEncoder; unsigned int channel, i; int sb, frameBytes; unsigned int offset; BitStream *bitStream; /* bitstream used for writing the frame to */ #ifdef DRM int desbits, diff; double fix; #endif /* local copy's of parameters */ ChannelInfo *channelInfo = hEncoder->channelInfo; CoderInfo *coderInfo = hEncoder->coderInfo; unsigned int numChannels = hEncoder->numChannels; unsigned int useLfe = hEncoder->config.useLfe; unsigned int useTns = hEncoder->config.useTns; unsigned int jointmode = hEncoder->config.jointmode; unsigned int bandWidth = hEncoder->config.bandWidth; unsigned int shortctl = hEncoder->config.shortctl; int maxqual = hEncoder->config.outputFormat ? MAXQUALADTS : MAXQUAL; /* Increase frame number */ hEncoder->frameNum++; if (samplesInput == 0) hEncoder->flushFrame++; /* After 4 flush frames all samples have been encoded, return 0 bytes written */ if (hEncoder->flushFrame > 4) return 0; /* Determine the channel configuration */ GetChannelInfo(channelInfo, numChannels, useLfe); /* Update current sample buffers */ for (channel = 0; channel < numChannels; channel++) { double *tmp; if (!hEncoder->sampleBuff[channel]) hEncoder->sampleBuff[channel] = (double*)AllocMemory(FRAME_LEN*sizeof(double)); tmp = hEncoder->sampleBuff[channel]; hEncoder->sampleBuff[channel] = hEncoder->nextSampleBuff[channel]; hEncoder->nextSampleBuff[channel] = hEncoder->next2SampleBuff[channel]; hEncoder->next2SampleBuff[channel] = hEncoder->next3SampleBuff[channel]; hEncoder->next3SampleBuff[channel] = tmp; if (samplesInput == 0) { /* start flushing*/ for (i = 0; i < FRAME_LEN; i++) hEncoder->next3SampleBuff[channel][i] = 0.0; } else { int samples_per_channel = samplesInput/numChannels; /* handle the various input formats and channel remapping */ switch( hEncoder->config.inputFormat ) { case FAAC_INPUT_16BIT: { short *input_channel = (short*)inputBuffer + hEncoder->config.channel_map[channel]; for (i = 0; i < samples_per_channel; i++) { hEncoder->next3SampleBuff[channel][i] = (double)*input_channel; input_channel += numChannels; } } break; case FAAC_INPUT_32BIT: { int32_t *input_channel = (int32_t*)inputBuffer + hEncoder->config.channel_map[channel]; for (i = 0; i < samples_per_channel; i++) { hEncoder->next3SampleBuff[channel][i] = (1.0/256) * (double)*input_channel; input_channel += numChannels; } } break; case FAAC_INPUT_FLOAT: { float *input_channel = (float*)inputBuffer + hEncoder->config.channel_map[channel]; for (i = 0; i < samples_per_channel; i++) { hEncoder->next3SampleBuff[channel][i] = (double)*input_channel; input_channel += numChannels; } } break; default: return -1; /* invalid input format */ break; } for (i = (int)(samplesInput/numChannels); i < FRAME_LEN; i++) hEncoder->next3SampleBuff[channel][i] = 0.0; } /* Psychoacoustics */ /* Update buffers and run FFT on new samples */ /* LFE psychoacoustic can run without it */ if (!channelInfo[channel].lfe || channelInfo[channel].cpe) { hEncoder->psymodel->PsyBufferUpdate( &hEncoder->fft_tables, &hEncoder->gpsyInfo, &hEncoder->psyInfo[channel], hEncoder->next3SampleBuff[channel], bandWidth, hEncoder->srInfo->cb_width_short, hEncoder->srInfo->num_cb_short); } } if (hEncoder->frameNum <= 3) /* Still filling up the buffers */ return 0; /* Psychoacoustics */ hEncoder->psymodel->PsyCalculate(channelInfo, &hEncoder->gpsyInfo, hEncoder->psyInfo, hEncoder->srInfo->cb_width_long, hEncoder->srInfo->num_cb_long, hEncoder->srInfo->cb_width_short, hEncoder->srInfo->num_cb_short, numChannels, (double)hEncoder->aacquantCfg.quality / DEFQUAL); hEncoder->psymodel->BlockSwitch(coderInfo, hEncoder->psyInfo, numChannels); /* force block type */ if (shortctl == SHORTCTL_NOSHORT) { for (channel = 0; channel < numChannels; channel++) { coderInfo[channel].block_type = ONLY_LONG_WINDOW; } } else if ((hEncoder->frameNum <= 4) || (shortctl == SHORTCTL_NOLONG)) { for (channel = 0; channel < numChannels; channel++) { coderInfo[channel].block_type = ONLY_SHORT_WINDOW; } } /* AAC Filterbank, MDCT with overlap and add */ for (channel = 0; channel < numChannels; channel++) { FilterBank(hEncoder, &coderInfo[channel], hEncoder->sampleBuff[channel], hEncoder->freqBuff[channel], hEncoder->overlapBuff[channel], MOVERLAPPED); } for (channel = 0; channel < numChannels; channel++) { channelInfo[channel].msInfo.is_present = 0; if (coderInfo[channel].block_type == ONLY_SHORT_WINDOW) { coderInfo[channel].sfbn = hEncoder->aacquantCfg.max_cbs; offset = 0; for (sb = 0; sb < coderInfo[channel].sfbn; sb++) { coderInfo[channel].sfb_offset[sb] = offset; offset += hEncoder->srInfo->cb_width_short[sb]; } coderInfo[channel].sfb_offset[sb] = offset; BlocGroup(hEncoder->freqBuff[channel], coderInfo + channel, &hEncoder->aacquantCfg); } else { coderInfo[channel].sfbn = hEncoder->aacquantCfg.max_cbl; coderInfo[channel].groups.n = 1; coderInfo[channel].groups.len[0] = 1; offset = 0; for (sb = 0; sb < coderInfo[channel].sfbn; sb++) { coderInfo[channel].sfb_offset[sb] = offset; offset += hEncoder->srInfo->cb_width_long[sb]; } coderInfo[channel].sfb_offset[sb] = offset; } } /* Perform TNS analysis and filtering */ for (channel = 0; channel < numChannels; channel++) { if ((!channelInfo[channel].lfe) && (useTns)) { TnsEncode(&(coderInfo[channel].tnsInfo), coderInfo[channel].sfbn, coderInfo[channel].sfbn, coderInfo[channel].block_type, coderInfo[channel].sfb_offset, hEncoder->freqBuff[channel]); } else { coderInfo[channel].tnsInfo.tnsDataPresent = 0; /* TNS not used for LFE */ } } for (channel = 0; channel < numChannels; channel++) { // reduce LFE bandwidth if (!channelInfo[channel].cpe && channelInfo[channel].lfe) { coderInfo[channel].sfbn = 3; } } AACstereo(coderInfo, channelInfo, hEncoder->freqBuff, numChannels, (double)hEncoder->aacquantCfg.quality/DEFQUAL, jointmode); #ifdef DRM /* loop the quantization until the desired bit-rate is reached */ diff = 1; /* to enter while loop */ hEncoder->aacquantCfg.quality = 120; /* init quality setting */ while (diff > 0) { /* if too many bits, do it again */ #endif for (channel = 0; channel < numChannels; channel++) { BlocQuant(&coderInfo[channel], hEncoder->freqBuff[channel], &(hEncoder->aacquantCfg)); } #ifdef DRM /* Write the AAC bitstream */ bitStream = OpenBitStream(bufferSize, outputBuffer); WriteBitstream(hEncoder, coderInfo, channelInfo, bitStream, numChannels); /* Close the bitstream and return the number of bytes written */ frameBytes = CloseBitStream(bitStream); /* now calculate desired bits and compare with actual encoded bits */ desbits = (int) ((double) numChannels * (hEncoder->config.bitRate * FRAME_LEN) / hEncoder->sampleRate); diff = ((frameBytes - 1 /* CRC */) * 8) - desbits; /* do linear correction according to relative difference */ fix = (double) desbits / ((frameBytes - 1 /* CRC */) * 8); /* speed up convergence. A value of 0.92 gives approx up to 10 iterations */ if (fix > 0.92) fix = 0.92; hEncoder->aacquantCfg.quality *= fix; /* quality should not go lower than 1, set diff to exit loop */ if (hEncoder->aacquantCfg.quality <= 1) diff = -1; } #endif // fix max_sfb in CPE mode for (channel = 0; channel < numChannels; channel++) { if (channelInfo[channel].present && (channelInfo[channel].cpe) && (channelInfo[channel].ch_is_left)) { CoderInfo *cil, *cir; cil = &coderInfo[channel]; cir = &coderInfo[channelInfo[channel].paired_ch]; cil->sfbn = cir->sfbn = max(cil->sfbn, cir->sfbn); } } #ifndef DRM /* Write the AAC bitstream */ bitStream = OpenBitStream(bufferSize, outputBuffer); if (WriteBitstream(hEncoder, coderInfo, channelInfo, bitStream, numChannels) < 0) return -1; /* Close the bitstream and return the number of bytes written */ frameBytes = CloseBitStream(bitStream); /* Adjust quality to get correct average bitrate */ if (hEncoder->config.bitRate) { int desbits = numChannels * (hEncoder->config.bitRate * FRAME_LEN) / hEncoder->sampleRate; double fix = (double)desbits / (double)(frameBytes * 8); if (fix < 0.9) fix += 0.1; else if (fix > 1.1) fix -= 0.1; else fix = 1.0; fix = (fix - 1.0) * 0.5 + 1.0; // printf("q: %.1f(f:%.4f)\n", hEncoder->aacquantCfg.quality, fix); hEncoder->aacquantCfg.quality *= fix; if (hEncoder->aacquantCfg.quality > maxqual) hEncoder->aacquantCfg.quality = maxqual; if (hEncoder->aacquantCfg.quality < 10) hEncoder->aacquantCfg.quality = 10; } #endif return frameBytes; } #ifdef DRM /* Scalefactorband data table for 960 transform length */ /* all parameters which are different from the 1024 transform length table are marked with an "x" */ static SR_INFO srInfo[12+1] = { { 96000, 40/*x*/, 12, { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 12, 12, 12, 12, 12, 16, 16, 24, 28, 36, 44, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 0/*x*/ },{ 4, 4, 4, 4, 4, 4, 8, 8, 8, 16, 28, 28/*x*/ } }, { 88200, 40/*x*/, 12, { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 12, 12, 12, 12, 12, 16, 16, 24, 28, 36, 44, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 0/*x*/ },{ 4, 4, 4, 4, 4, 4, 8, 8, 8, 16, 28, 28/*x*/ } }, { 64000, 45/*x*/, 12, { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 12, 12, 12, 16, 16, 16, 20, 24, 24, 28, 36, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 16/*x*/, 0/*x*/ },{ 4, 4, 4, 4, 4, 4, 8, 8, 8, 16, 28, 28/*x*/ } }, { 48000, 49, 14, { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8, 12, 12, 12, 12, 16, 16, 20, 20, 24, 24, 28, 28, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32/*x*/ }, { 4, 4, 4, 4, 4, 8, 8, 8, 12, 12, 12, 16, 16, 8/*x*/ } }, { 44100, 49, 14, { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8, 12, 12, 12, 12, 16, 16, 20, 20, 24, 24, 28, 28, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32/*x*/ }, { 4, 4, 4, 4, 4, 8, 8, 8, 12, 12, 12, 16, 16, 8/*x*/ } }, { 32000, 49/*x*/, 14, { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8, 12, 12, 12, 12, 16, 16, 20, 20, 24, 24, 28, 28, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 0/*x*/, 0/*x*/ },{ 4, 4, 4, 4, 4, 8, 8, 8, 12, 12, 12, 16, 16, 16 } }, { 24000, 46/*x*/, 15, { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 12, 12, 12, 12, 16, 16, 16, 20, 20, 24, 24, 28, 28, 32, 36, 36, 40, 44, 48, 52, 52, 64, 64, 64, 64, 0/*x*/ }, { 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 12, 12, 16, 16, 12/*x*/ } }, { 22050, 46/*x*/, 15, { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 12, 12, 12, 12, 16, 16, 16, 20, 20, 24, 24, 28, 28, 32, 36, 36, 40, 44, 48, 52, 52, 64, 64, 64, 64, 0/*x*/ }, { 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 12, 12, 16, 16, 12/*x*/ } }, { 16000, 42/*x*/, 15, { 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 12, 12, 12, 12, 12, 12, 12, 12, 12, 16, 16, 16, 16, 20, 20, 20, 24, 24, 28, 28, 32, 36, 40, 40, 44, 48, 52, 56, 60, 64, 64, 0/*x*/ }, { 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 12, 12, 16, 20, 12/*x*/ } }, { 12000, 42/*x*/, 15, { 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 12, 12, 12, 12, 12, 12, 12, 12, 12, 16, 16, 16, 16, 20, 20, 20, 24, 24, 28, 28, 32, 36, 40, 40, 44, 48, 52, 56, 60, 64, 64, 0/*x*/ }, { 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 12, 12, 16, 20, 12/*x*/ } }, { 11025, 42/*x*/, 15, { 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 12, 12, 12, 12, 12, 12, 12, 12, 12, 16, 16, 16, 16, 20, 20, 20, 24, 24, 28, 28, 32, 36, 40, 40, 44, 48, 52, 56, 60, 64, 64, 0/*x*/ }, { 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 12, 12, 16, 20, 12/*x*/ } }, { 8000, 40, 15, { 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 16, 16, 16, 16, 16, 16, 16, 20, 20, 20, 20, 24, 24, 24, 28, 28, 32, 36, 36, 40, 44, 48, 52, 56, 60, 64, 16/*x*/ }, { 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 12, 16, 20, 12/*x*/ } }, { -1 } }; #else /* Scalefactorband data table for 1024 transform length */ static SR_INFO srInfo[12+1] = { { 96000, 41, 12, { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 12, 12, 12, 12, 12, 16, 16, 24, 28, 36, 44, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64 },{ 4, 4, 4, 4, 4, 4, 8, 8, 8, 16, 28, 36 } }, { 88200, 41, 12, { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 12, 12, 12, 12, 12, 16, 16, 24, 28, 36, 44, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64 },{ 4, 4, 4, 4, 4, 4, 8, 8, 8, 16, 28, 36 } }, { 64000, 47, 12, { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 12, 12, 12, 16, 16, 16, 20, 24, 24, 28, 36, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40 },{ 4, 4, 4, 4, 4, 4, 8, 8, 8, 16, 28, 32 } }, { 48000, 49, 14, { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8, 12, 12, 12, 12, 16, 16, 20, 20, 24, 24, 28, 28, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 96 }, { 4, 4, 4, 4, 4, 8, 8, 8, 12, 12, 12, 16, 16, 16 } }, { 44100, 49, 14, { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8, 12, 12, 12, 12, 16, 16, 20, 20, 24, 24, 28, 28, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 96 }, { 4, 4, 4, 4, 4, 8, 8, 8, 12, 12, 12, 16, 16, 16 } }, { 32000, 51, 14, { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8, 12, 12, 12, 12, 16, 16, 20, 20, 24, 24, 28, 28, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32 },{ 4, 4, 4, 4, 4, 8, 8, 8, 12, 12, 12, 16, 16, 16 } }, { 24000, 47, 15, { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 12, 12, 12, 12, 16, 16, 16, 20, 20, 24, 24, 28, 28, 32, 36, 36, 40, 44, 48, 52, 52, 64, 64, 64, 64, 64 }, { 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 12, 12, 16, 16, 20 } }, { 22050, 47, 15, { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 12, 12, 12, 12, 16, 16, 16, 20, 20, 24, 24, 28, 28, 32, 36, 36, 40, 44, 48, 52, 52, 64, 64, 64, 64, 64 }, { 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 12, 12, 16, 16, 20 } }, { 16000, 43, 15, { 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 12, 12, 12, 12, 12, 12, 12, 12, 12, 16, 16, 16, 16, 20, 20, 20, 24, 24, 28, 28, 32, 36, 40, 40, 44, 48, 52, 56, 60, 64, 64, 64 }, { 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 12, 12, 16, 20, 20 } }, { 12000, 43, 15, { 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 12, 12, 12, 12, 12, 12, 12, 12, 12, 16, 16, 16, 16, 20, 20, 20, 24, 24, 28, 28, 32, 36, 40, 40, 44, 48, 52, 56, 60, 64, 64, 64 }, { 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 12, 12, 16, 20, 20 } }, { 11025, 43, 15, { 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 12, 12, 12, 12, 12, 12, 12, 12, 12, 16, 16, 16, 16, 20, 20, 20, 24, 24, 28, 28, 32, 36, 40, 40, 44, 48, 52, 56, 60, 64, 64, 64 }, { 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 12, 12, 16, 20, 20 } }, { 8000, 40, 15, { 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 16, 16, 16, 16, 16, 16, 16, 20, 20, 20, 20, 24, 24, 24, 28, 28, 32, 36, 36, 40, 44, 48, 52, 56, 60, 64, 80 }, { 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 12, 16, 20, 20 } }, { -1 } }; #endif