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-rw-r--r--thirdparty/libmpcdec/mpc_decoder.c681
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diff --git a/thirdparty/libmpcdec/mpc_decoder.c b/thirdparty/libmpcdec/mpc_decoder.c
deleted file mode 100644
index 45596c6015..0000000000
--- a/thirdparty/libmpcdec/mpc_decoder.c
+++ /dev/null
@@ -1,681 +0,0 @@
-/*
- Copyright (c) 2005-2009, The Musepack Development Team
- All rights reserved.
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions are
- met:
-
- * Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
-
- * Redistributions in binary form must reproduce the above
- copyright notice, this list of conditions and the following
- disclaimer in the documentation and/or other materials provided
- with the distribution.
-
- * Neither the name of the The Musepack Development Team nor the
- names of its contributors may be used to endorse or promote
- products derived from this software without specific prior
- written permission.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-/// \file mpc_decoder.c
-/// Core decoding routines and logic.
-
-#include <string.h>
-#include <mpc/mpcdec.h>
-#include <mpc/minimax.h>
-#include "decoder.h"
-#include "huffman.h"
-#include "internal.h"
-#include "mpcdec_math.h"
-#include "requant.h"
-#include "mpc_bits_reader.h"
-
-//SV7 tables
-extern const mpc_lut_data mpc_HuffQ [7] [2];
-extern const mpc_lut_data mpc_HuffHdr;
-extern const mpc_huffman mpc_table_HuffSCFI [ 4];
-extern const mpc_lut_data mpc_HuffDSCF;
-
-//SV8 tables
-extern const mpc_can_data mpc_can_Bands;
-extern const mpc_can_data mpc_can_SCFI[2];
-extern const mpc_can_data mpc_can_DSCF[2];
-extern const mpc_can_data mpc_can_Res [2];
-extern const mpc_can_data mpc_can_Q [8][2];
-extern const mpc_can_data mpc_can_Q1;
-extern const mpc_can_data mpc_can_Q9up;
-
-//------------------------------------------------------------------------------
-// types
-//------------------------------------------------------------------------------
-enum
-{
- MEMSIZE = MPC_DECODER_MEMSIZE, // overall buffer size
- MEMSIZE2 = (MEMSIZE/2), // size of one buffer
- MEMMASK = (MEMSIZE-1)
-};
-
-//------------------------------------------------------------------------------
-// forward declarations
-//------------------------------------------------------------------------------
-void mpc_decoder_read_bitstream_sv7(mpc_decoder * d, mpc_bits_reader * r);
-void mpc_decoder_read_bitstream_sv8(mpc_decoder * d, mpc_bits_reader * r,
- mpc_bool_t is_key_frame);
-static void mpc_decoder_requantisierung(mpc_decoder *d);
-
-/**
- * set the scf indexes for seeking use
- * needed only for sv7 seeking
- * @param d
- */
-void mpc_decoder_reset_scf(mpc_decoder * d, int value)
-{
- memset(d->SCF_Index_L, value, sizeof(d->SCF_Index_L) );
- memset(d->SCF_Index_R, value, sizeof(d->SCF_Index_R) );
-}
-
-
-void mpc_decoder_setup(mpc_decoder *d)
-{
- memset(d, 0, sizeof *d);
-
- d->__r1 = 1;
- d->__r2 = 1;
-
- mpc_decoder_init_quant(d, 1.0f);
-}
-
-void mpc_decoder_set_streaminfo(mpc_decoder *d, mpc_streaminfo *si)
-{
- d->stream_version = si->stream_version;
- d->ms = si->ms;
- d->max_band = si->max_band;
- d->channels = si->channels;
- d->samples_to_skip = MPC_DECODER_SYNTH_DELAY + si->beg_silence;
-
- if (si->stream_version == 7 && si->is_true_gapless)
- d->samples = ((si->samples + MPC_FRAME_LENGTH - 1) / MPC_FRAME_LENGTH) * MPC_FRAME_LENGTH;
- else
- d->samples = si->samples;
-}
-
-mpc_decoder * mpc_decoder_init(mpc_streaminfo *si)
-{
- mpc_decoder* p_tmp = malloc(sizeof(mpc_decoder));
-
- if (p_tmp != 0) {
- mpc_decoder_setup(p_tmp);
- mpc_decoder_set_streaminfo(p_tmp, si);
- huff_init_lut(LUT_DEPTH); // FIXME : this needs to be called only once when the library is loaded
- }
-
- return p_tmp;
-}
-
-void mpc_decoder_exit(mpc_decoder *d)
-{
- free(d);
-}
-
-void mpc_decoder_decode_frame(mpc_decoder * d,
- mpc_bits_reader * r,
- mpc_frame_info * i)
-{
- mpc_bits_reader r_sav = *r;
- mpc_int64_t samples_left;
-
- samples_left = d->samples - d->decoded_samples + MPC_DECODER_SYNTH_DELAY;
-
- if (samples_left <= 0 && d->samples != 0) {
- i->samples = 0;
- i->bits = -1;
- return;
- }
-
- if (d->stream_version == 8)
- mpc_decoder_read_bitstream_sv8(d, r, i->is_key_frame);
- else
- mpc_decoder_read_bitstream_sv7(d, r);
-
- if (d->samples_to_skip < MPC_FRAME_LENGTH + MPC_DECODER_SYNTH_DELAY) {
- mpc_decoder_requantisierung(d);
- mpc_decoder_synthese_filter_float(d, i->buffer, d->channels);
- }
-
- d->decoded_samples += MPC_FRAME_LENGTH;
-
- // reconstruct exact filelength
- if (d->decoded_samples - d->samples < MPC_FRAME_LENGTH && d->stream_version == 7) {
- int last_frame_samples = mpc_bits_read(r, 11);
- if (d->decoded_samples == d->samples) {
- if (last_frame_samples == 0) last_frame_samples = MPC_FRAME_LENGTH;
- d->samples += last_frame_samples - MPC_FRAME_LENGTH;
- samples_left += last_frame_samples - MPC_FRAME_LENGTH;
- }
- }
-
- i->samples = samples_left > MPC_FRAME_LENGTH ? MPC_FRAME_LENGTH : samples_left < 0 ? 0 : (mpc_uint32_t) samples_left;
- i->bits = (mpc_uint32_t) (((r->buff - r_sav.buff) << 3) + r_sav.count - r->count);
-
- if (d->samples_to_skip) {
- if (i->samples <= d->samples_to_skip) {
- d->samples_to_skip -= i->samples;
- i->samples = 0;
- } else {
- i->samples -= d->samples_to_skip;
- memmove(i->buffer, i->buffer + d->samples_to_skip * d->channels,
- i->samples * d->channels * sizeof (MPC_SAMPLE_FORMAT));
- d->samples_to_skip = 0;
- }
- }
-}
-
-void
-mpc_decoder_requantisierung(mpc_decoder *d)
-{
- mpc_int32_t Band;
- mpc_int32_t n;
- MPC_SAMPLE_FORMAT facL;
- MPC_SAMPLE_FORMAT facR;
- MPC_SAMPLE_FORMAT templ;
- MPC_SAMPLE_FORMAT tempr;
- MPC_SAMPLE_FORMAT* YL;
- MPC_SAMPLE_FORMAT* YR;
- mpc_int16_t* L;
- mpc_int16_t* R;
- const mpc_int32_t Last_Band = d->max_band;
-
-#ifdef MPC_FIXED_POINT
-#if MPC_FIXED_POINT_FRACTPART == 14
-#define MPC_MULTIPLY_SCF(CcVal, SCF_idx) \
- MPC_MULTIPLY_EX(CcVal, d->SCF[SCF_idx], d->SCF_shift[SCF_idx])
-#else
-
-#error FIXME, Cc table is in 18.14 format
-
-#endif
-#else
-#define MPC_MULTIPLY_SCF(CcVal, SCF_idx) \
- MPC_MULTIPLY(CcVal, d->SCF[SCF_idx])
-#endif
- // requantization and scaling of subband-samples
- for ( Band = 0; Band <= Last_Band; Band++ ) { // setting pointers
- YL = d->Y_L[0] + Band;
- YR = d->Y_R[0] + Band;
- L = d->Q[Band].L;
- R = d->Q[Band].R;
- /************************** MS-coded **************************/
- if ( d->MS_Flag [Band] ) {
- if ( d->Res_L [Band] ) {
- if ( d->Res_R [Band] ) { // M!=0, S!=0
- facL = MPC_MULTIPLY_SCF( Cc[d->Res_L[Band]] , d->SCF_Index_L[Band][0] & 0xFF);
- facR = MPC_MULTIPLY_SCF( Cc[d->Res_R[Band]] , d->SCF_Index_R[Band][0] & 0xFF);
- for ( n = 0; n < 12; n++, YL += 32, YR += 32 ) {
- *YL = (templ = MPC_MULTIPLY_FLOAT_INT(facL,*L++))+(tempr = MPC_MULTIPLY_FLOAT_INT(facR,*R++));
- *YR = templ - tempr;
- }
- facL = MPC_MULTIPLY_SCF( Cc[d->Res_L[Band]] , d->SCF_Index_L[Band][1] & 0xFF);
- facR = MPC_MULTIPLY_SCF( Cc[d->Res_R[Band]] , d->SCF_Index_R[Band][1] & 0xFF);
- for ( ; n < 24; n++, YL += 32, YR += 32 ) {
- *YL = (templ = MPC_MULTIPLY_FLOAT_INT(facL,*L++))+(tempr = MPC_MULTIPLY_FLOAT_INT(facR,*R++));
- *YR = templ - tempr;
- }
- facL = MPC_MULTIPLY_SCF( Cc[d->Res_L[Band]] , d->SCF_Index_L[Band][2] & 0xFF);
- facR = MPC_MULTIPLY_SCF( Cc[d->Res_R[Band]] , d->SCF_Index_R[Band][2] & 0xFF);
- for ( ; n < 36; n++, YL += 32, YR += 32 ) {
- *YL = (templ = MPC_MULTIPLY_FLOAT_INT(facL,*L++))+(tempr = MPC_MULTIPLY_FLOAT_INT(facR,*R++));
- *YR = templ - tempr;
- }
- } else { // M!=0, S==0
- facL = MPC_MULTIPLY_SCF( Cc[d->Res_L[Band]] , d->SCF_Index_L[Band][0] & 0xFF);
- for ( n = 0; n < 12; n++, YL += 32, YR += 32 ) {
- *YR = *YL = MPC_MULTIPLY_FLOAT_INT(facL,*L++);
- }
- facL = MPC_MULTIPLY_SCF( Cc[d->Res_L[Band]] , d->SCF_Index_L[Band][1] & 0xFF);
- for ( ; n < 24; n++, YL += 32, YR += 32 ) {
- *YR = *YL = MPC_MULTIPLY_FLOAT_INT(facL,*L++);
- }
- facL = MPC_MULTIPLY_SCF( Cc[d->Res_L[Band]] , d->SCF_Index_L[Band][2] & 0xFF);
- for ( ; n < 36; n++, YL += 32, YR += 32 ) {
- *YR = *YL = MPC_MULTIPLY_FLOAT_INT(facL,*L++);
- }
- }
- } else {
- if (d->Res_R[Band]) // M==0, S!=0
- {
- facR = MPC_MULTIPLY_SCF( Cc[d->Res_R[Band]] , d->SCF_Index_R[Band][0] & 0xFF);
- for ( n = 0; n < 12; n++, YL += 32, YR += 32 ) {
- *YR = - (*YL = MPC_MULTIPLY_FLOAT_INT(facR,*(R++)));
- }
- facR = MPC_MULTIPLY_SCF( Cc[d->Res_R[Band]] , d->SCF_Index_R[Band][1] & 0xFF);
- for ( ; n < 24; n++, YL += 32, YR += 32 ) {
- *YR = - (*YL = MPC_MULTIPLY_FLOAT_INT(facR,*(R++)));
- }
- facR = MPC_MULTIPLY_SCF( Cc[d->Res_R[Band]] , d->SCF_Index_R[Band][2] & 0xFF);
- for ( ; n < 36; n++, YL += 32, YR += 32 ) {
- *YR = - (*YL = MPC_MULTIPLY_FLOAT_INT(facR,*(R++)));
- }
- } else { // M==0, S==0
- for ( n = 0; n < 36; n++, YL += 32, YR += 32 ) {
- *YR = *YL = 0;
- }
- }
- }
- }
- /************************** LR-coded **************************/
- else {
- if ( d->Res_L [Band] ) {
- if ( d->Res_R [Band] ) { // L!=0, R!=0
- facL = MPC_MULTIPLY_SCF( Cc[d->Res_L[Band]] , d->SCF_Index_L[Band][0] & 0xFF);
- facR = MPC_MULTIPLY_SCF( Cc[d->Res_R[Band]] , d->SCF_Index_R[Band][0] & 0xFF);
- for (n = 0; n < 12; n++, YL += 32, YR += 32 ) {
- *YL = MPC_MULTIPLY_FLOAT_INT(facL,*L++);
- *YR = MPC_MULTIPLY_FLOAT_INT(facR,*R++);
- }
- facL = MPC_MULTIPLY_SCF( Cc[d->Res_L[Band]] , d->SCF_Index_L[Band][1] & 0xFF);
- facR = MPC_MULTIPLY_SCF( Cc[d->Res_R[Band]] , d->SCF_Index_R[Band][1] & 0xFF);
- for (; n < 24; n++, YL += 32, YR += 32 ) {
- *YL = MPC_MULTIPLY_FLOAT_INT(facL,*L++);
- *YR = MPC_MULTIPLY_FLOAT_INT(facR,*R++);
- }
- facL = MPC_MULTIPLY_SCF( Cc[d->Res_L[Band]] , d->SCF_Index_L[Band][2] & 0xFF);
- facR = MPC_MULTIPLY_SCF( Cc[d->Res_R[Band]] , d->SCF_Index_R[Band][2] & 0xFF);
- for (; n < 36; n++, YL += 32, YR += 32 ) {
- *YL = MPC_MULTIPLY_FLOAT_INT(facL,*L++);
- *YR = MPC_MULTIPLY_FLOAT_INT(facR,*R++);
- }
- } else { // L!=0, R==0
- facL = MPC_MULTIPLY_SCF( Cc[d->Res_L[Band]] , d->SCF_Index_L[Band][0] & 0xFF);
- for ( n = 0; n < 12; n++, YL += 32, YR += 32 ) {
- *YL = MPC_MULTIPLY_FLOAT_INT(facL,*L++);
- *YR = 0;
- }
- facL = MPC_MULTIPLY_SCF( Cc[d->Res_L[Band]] , d->SCF_Index_L[Band][1] & 0xFF);
- for ( ; n < 24; n++, YL += 32, YR += 32 ) {
- *YL = MPC_MULTIPLY_FLOAT_INT(facL,*L++);
- *YR = 0;
- }
- facL = MPC_MULTIPLY_SCF( Cc[d->Res_L[Band]] , d->SCF_Index_L[Band][2] & 0xFF);
- for ( ; n < 36; n++, YL += 32, YR += 32 ) {
- *YL = MPC_MULTIPLY_FLOAT_INT(facL,*L++);
- *YR = 0;
- }
- }
- }
- else {
- if ( d->Res_R [Band] ) { // L==0, R!=0
- facR = MPC_MULTIPLY_SCF( Cc[d->Res_R[Band]] , d->SCF_Index_R[Band][0] & 0xFF);
- for ( n = 0; n < 12; n++, YL += 32, YR += 32 ) {
- *YL = 0;
- *YR = MPC_MULTIPLY_FLOAT_INT(facR,*R++);
- }
- facR = MPC_MULTIPLY_SCF( Cc[d->Res_R[Band]] , d->SCF_Index_R[Band][1] & 0xFF);
- for ( ; n < 24; n++, YL += 32, YR += 32 ) {
- *YL = 0;
- *YR = MPC_MULTIPLY_FLOAT_INT(facR,*R++);
- }
- facR = MPC_MULTIPLY_SCF( Cc[d->Res_R[Band]] , d->SCF_Index_R[Band][2] & 0xFF);
- for ( ; n < 36; n++, YL += 32, YR += 32 ) {
- *YL = 0;
- *YR = MPC_MULTIPLY_FLOAT_INT(facR,*R++);
- }
- } else { // L==0, R==0
- for ( n = 0; n < 36; n++, YL += 32, YR += 32 ) {
- *YR = *YL = 0;
- }
- }
- }
- }
- }
-}
-
-void mpc_decoder_read_bitstream_sv7(mpc_decoder * d, mpc_bits_reader * r)
-{
- // these arrays hold decoding results for bundled quantizers (3- and 5-step)
- static const mpc_int32_t idx30[] = { -1, 0, 1,-1, 0, 1,-1, 0, 1,-1, 0, 1,-1, 0, 1,-1, 0, 1,-1, 0, 1,-1, 0, 1,-1, 0, 1};
- static const mpc_int32_t idx31[] = { -1,-1,-1, 0, 0, 0, 1, 1, 1,-1,-1,-1, 0, 0, 0, 1, 1, 1,-1,-1,-1, 0, 0, 0, 1, 1, 1};
- static const mpc_int32_t idx32[] = { -1,-1,-1,-1,-1,-1,-1,-1,-1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1};
- static const mpc_int32_t idx50[] = { -2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2};
- static const mpc_int32_t idx51[] = { -2,-2,-2,-2,-2,-1,-1,-1,-1,-1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2};
-
- mpc_int32_t n, idx, Max_used_Band = 0;
-
- /***************************** Header *****************************/
-
- // first subband
- d->Res_L[0] = mpc_bits_read(r, 4);
- d->Res_R[0] = mpc_bits_read(r, 4);
- if (!(d->Res_L[0] == 0 && d->Res_R[0] == 0)) {
- if (d->ms)
- d->MS_Flag[0] = mpc_bits_read(r, 1);
- Max_used_Band = 1;
- }
-
- // consecutive subbands
- for ( n = 1; n <= d->max_band; n++ ) {
- idx = mpc_bits_huff_lut(r, & mpc_HuffHdr);
- d->Res_L[n] = (idx!=4) ? d->Res_L[n - 1] + idx : (int) mpc_bits_read(r, 4);
-
- idx = mpc_bits_huff_lut(r, & mpc_HuffHdr);
- d->Res_R[n] = (idx!=4) ? d->Res_R[n - 1] + idx : (int) mpc_bits_read(r, 4);
-
- if (!(d->Res_L[n] == 0 && d->Res_R[n] == 0)) {
- if (d->ms)
- d->MS_Flag[n] = mpc_bits_read(r, 1);
- Max_used_Band = n + 1;
- }
- }
-
- /****************************** SCFI ******************************/
- for ( n = 0; n < Max_used_Band; n++ ) {
- if (d->Res_L[n])
- d->SCFI_L[n] = mpc_bits_huff_dec(r, mpc_table_HuffSCFI);
- if (d->Res_R[n])
- d->SCFI_R[n] = mpc_bits_huff_dec(r, mpc_table_HuffSCFI);
- }
-
- /**************************** SCF/DSCF ****************************/
- for ( n = 0; n < Max_used_Band; n++ ) {
- mpc_int32_t * SCF = d->SCF_Index_L[n];
- mpc_uint32_t Res = d->Res_L[n], SCFI = d->SCFI_L[n];
- do {
- if (Res) {
- switch (SCFI) {
- case 1:
- idx = mpc_bits_huff_lut(r, & mpc_HuffDSCF);
- SCF[0] = (idx!=8) ? SCF[2] + idx : (int) mpc_bits_read(r, 6);
- idx = mpc_bits_huff_lut(r, & mpc_HuffDSCF);
- SCF[1] = (idx!=8) ? SCF[0] + idx : (int) mpc_bits_read(r, 6);
- SCF[2] = SCF[1];
- break;
- case 3:
- idx = mpc_bits_huff_lut(r, & mpc_HuffDSCF);
- SCF[0] = (idx!=8) ? SCF[2] + idx : (int) mpc_bits_read(r, 6);
- SCF[1] = SCF[0];
- SCF[2] = SCF[1];
- break;
- case 2:
- idx = mpc_bits_huff_lut(r, & mpc_HuffDSCF);
- SCF[0] = (idx!=8) ? SCF[2] + idx : (int) mpc_bits_read(r, 6);
- SCF[1] = SCF[0];
- idx = mpc_bits_huff_lut(r, & mpc_HuffDSCF);
- SCF[2] = (idx!=8) ? SCF[1] + idx : (int) mpc_bits_read(r, 6);
- break;
- case 0:
- idx = mpc_bits_huff_lut(r, & mpc_HuffDSCF);
- SCF[0] = (idx!=8) ? SCF[2] + idx : (int) mpc_bits_read(r, 6);
- idx = mpc_bits_huff_lut(r, & mpc_HuffDSCF);
- SCF[1] = (idx!=8) ? SCF[0] + idx : (int) mpc_bits_read(r, 6);
- idx = mpc_bits_huff_lut(r, & mpc_HuffDSCF);
- SCF[2] = (idx!=8) ? SCF[1] + idx : (int) mpc_bits_read(r, 6);
- break;
- default:
- return;
- }
- if (SCF[0] > 1024)
- SCF[0] = 0x8080;
- if (SCF[1] > 1024)
- SCF[1] = 0x8080;
- if (SCF[2] > 1024)
- SCF[2] = 0x8080;
- }
- Res = d->Res_R[n];
- SCFI = d->SCFI_R[n];
- } while ( SCF == d->SCF_Index_L[n] && (SCF = d->SCF_Index_R[n]));
- }
-
-// if (d->seeking == TRUE)
-// return;
-
- /***************************** Samples ****************************/
- for ( n = 0; n < Max_used_Band; n++ ) {
- mpc_int16_t *q = d->Q[n].L, Res = d->Res_L[n];
- do {
- mpc_int32_t k;
- const mpc_lut_data *Table;
- switch (Res) {
- case -2: case -3: case -4: case -5: case -6: case -7: case -8: case -9:
- case -10: case -11: case -12: case -13: case -14: case -15: case -16: case -17: case 0:
- break;
- case -1:
- for (k=0; k<36; k++ ) {
- mpc_uint32_t tmp = mpc_random_int(d);
- q[k] = ((tmp >> 24) & 0xFF) + ((tmp >> 16) & 0xFF) + ((tmp >> 8) & 0xFF) + ((tmp >> 0) & 0xFF) - 510;
- }
- break;
- case 1:
- Table = & mpc_HuffQ[0][mpc_bits_read(r, 1)];
- for ( k = 0; k < 36; k += 3) {
- idx = mpc_bits_huff_lut(r, Table);
- q[k] = idx30[idx];
- q[k + 1] = idx31[idx];
- q[k + 2] = idx32[idx];
- }
- break;
- case 2:
- Table = & mpc_HuffQ[1][mpc_bits_read(r, 1)];
- for ( k = 0; k < 36; k += 2) {
- idx = mpc_bits_huff_lut(r, Table);
- q[k] = idx50[idx];
- q[k + 1] = idx51[idx];
- }
- break;
- case 3:
- case 4:
- case 5:
- case 6:
- case 7:
- Table = & mpc_HuffQ[Res - 1][mpc_bits_read(r, 1)];
- for ( k = 0; k < 36; k++ )
- q[k] = mpc_bits_huff_lut(r, Table);
- break;
- case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15: case 16: case 17:
- for ( k = 0; k < 36; k++ )
- q[k] = (mpc_int32_t)mpc_bits_read(r, Res_bit[Res]) - Dc[Res];
- break;
- default:
- return;
- }
-
- Res = d->Res_R[n];
- } while (q == d->Q[n].L && (q = d->Q[n].R));
- }
-}
-
-void mpc_decoder_read_bitstream_sv8(mpc_decoder * d, mpc_bits_reader * r, mpc_bool_t is_key_frame)
-{
- // these arrays hold decoding results for bundled quantizers (3- and 5-step)
- static const mpc_int8_t idx50[125] = {-2, -1, 0, 1, 2, -2, -1, 0, 1, 2, -2, -1, 0, 1, 2, -2, -1, 0, 1, 2, -2, -1, 0, 1, 2, -2, -1, 0, 1, 2, -2, -1, 0, 1, 2, -2, -1, 0, 1, 2, -2, -1, 0, 1, 2, -2, -1, 0, 1, 2, -2, -1, 0, 1, 2, -2, -1, 0, 1, 2, -2, -1, 0, 1, 2, -2, -1, 0, 1, 2, -2, -1, 0, 1, 2, -2, -1, 0, 1, 2, -2, -1, 0, 1, 2, -2, -1, 0, 1, 2, -2, -1, 0, 1, 2, -2, -1, 0, 1, 2, -2, -1, 0, 1, 2, -2, -1, 0, 1, 2, -2, -1, 0, 1, 2, -2, -1, 0, 1, 2, -2, -1, 0, 1, 2};
- static const mpc_int8_t idx51[125] = {-2, -2, -2, -2, -2, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, -2, -2, -2, -2, -2, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, -2, -2, -2, -2, -2, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, -2, -2, -2, -2, -2, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, -2, -2, -2, -2, -2, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2};
- static const mpc_int8_t idx52[125] = {-2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2};
-
- mpc_int32_t n, Max_used_Band;
- const mpc_can_data * Table, * Tables[2];
-
- /***************************** Header *****************************/
-
- if (is_key_frame == MPC_TRUE) {
- Max_used_Band = mpc_bits_log_dec(r, d->max_band + 1);
- } else {
- Max_used_Band = d->last_max_band + mpc_bits_can_dec(r, & mpc_can_Bands);
- if (Max_used_Band > 32) Max_used_Band -= 33;
- }
- d->last_max_band = Max_used_Band;
-
- if (Max_used_Band) {
- d->Res_L[Max_used_Band-1] = mpc_bits_can_dec(r, & mpc_can_Res[0]);
- d->Res_R[Max_used_Band-1] = mpc_bits_can_dec(r, & mpc_can_Res[0]);
- if (d->Res_L[Max_used_Band-1] > 15) d->Res_L[Max_used_Band-1] -= 17;
- if (d->Res_R[Max_used_Band-1] > 15) d->Res_R[Max_used_Band-1] -= 17;
- for ( n = Max_used_Band - 2; n >= 0; n--) {
- d->Res_L[n] = mpc_bits_can_dec(r, & mpc_can_Res[d->Res_L[n + 1] > 2]) + d->Res_L[n + 1];
- if (d->Res_L[n] > 15) d->Res_L[n] -= 17;
- d->Res_R[n] = mpc_bits_can_dec(r, & mpc_can_Res[d->Res_R[n + 1] > 2]) + d->Res_R[n + 1];
- if (d->Res_R[n] > 15) d->Res_R[n] -= 17;
- }
-
- if (d->ms) {
- int cnt = 0, tot = 0;
- mpc_uint32_t tmp = 0;
- for( n = 0; n < Max_used_Band; n++)
- if ( d->Res_L[n] != 0 || d->Res_R[n] != 0 )
- tot++;
- cnt = mpc_bits_log_dec(r, tot);
- if (cnt != 0 && cnt != tot)
- tmp = mpc_bits_enum_dec(r, mini(cnt, tot-cnt), tot);
- if (cnt * 2 > tot) tmp = ~tmp;
- for( n = Max_used_Band - 1; n >= 0; n--)
- if ( d->Res_L[n] != 0 || d->Res_R[n] != 0 ) {
- d->MS_Flag[n] = tmp & 1;
- tmp >>= 1;
- }
- }
- }
-
- for( n = Max_used_Band; n <= d->max_band; n++)
- d->Res_L[n] = d->Res_R[n] = 0;
-
- /****************************** SCFI ******************************/
- if (is_key_frame == MPC_TRUE){
- for( n = 0; n < 32; n++)
- d->DSCF_Flag_L[n] = d->DSCF_Flag_R[n] = 1; // new block -> force key frame
- }
-
- Tables[0] = & mpc_can_SCFI[0];
- Tables[1] = & mpc_can_SCFI[1];
- for ( n = 0; n < Max_used_Band; n++ ) {
- int tmp = 0, cnt = -1;
- if (d->Res_L[n]) cnt++;
- if (d->Res_R[n]) cnt++;
- if (cnt >= 0) {
- tmp = mpc_bits_can_dec(r, Tables[cnt]);
- if (d->Res_L[n]) d->SCFI_L[n] = tmp >> (2 * cnt);
- if (d->Res_R[n]) d->SCFI_R[n] = tmp & 3;
- }
- }
-
- /**************************** SCF/DSCF ****************************/
-
- for ( n = 0; n < Max_used_Band; n++ ) {
- mpc_int32_t * SCF = d->SCF_Index_L[n];
- mpc_uint32_t Res = d->Res_L[n], SCFI = d->SCFI_L[n];
- mpc_bool_t * DSCF_Flag = &d->DSCF_Flag_L[n];
-
- do {
- if ( Res ) {
- int m;
- if (*DSCF_Flag == 1) {
- SCF[0] = (mpc_int32_t)mpc_bits_read(r, 7) - 6;
- *DSCF_Flag = 0;
- } else {
- mpc_uint_t tmp = mpc_bits_can_dec(r, & mpc_can_DSCF[1]);
- if (tmp == 64)
- tmp += mpc_bits_read(r, 6);
- SCF[0] = ((SCF[2] - 25 + tmp) & 127) - 6;
- }
- for( m = 0; m < 2; m++){
- if (((SCFI << m) & 2) == 0) {
- mpc_uint_t tmp = mpc_bits_can_dec(r, & mpc_can_DSCF[0]);
- if (tmp == 31)
- tmp = 64 + mpc_bits_read(r, 6);
- SCF[m + 1] = ((SCF[m] - 25 + tmp) & 127) - 6;
- } else
- SCF[m + 1] = SCF[m];
- }
- }
- Res = d->Res_R[n];
- SCFI = d->SCFI_R[n];
- DSCF_Flag = &d->DSCF_Flag_R[n];
- } while ( SCF == d->SCF_Index_L[n] && (SCF = d->SCF_Index_R[n]));
- }
-
- /***************************** Samples ****************************/
- for ( n = 0; n < Max_used_Band; n++ ) {
- mpc_int16_t *q = d->Q[n].L, Res = d->Res_L[n];
- static const unsigned int thres[] = {0, 0, 3, 0, 0, 1, 3, 4, 8};
- static const mpc_int8_t HuffQ2_var[5*5*5] =
- {6, 5, 4, 5, 6, 5, 4, 3, 4, 5, 4, 3, 2, 3, 4, 5, 4, 3, 4, 5, 6, 5, 4, 5, 6, 5, 4, 3, 4, 5, 4, 3, 2, 3, 4, 3, 2, 1, 2, 3, 4, 3, 2, 3, 4, 5, 4, 3, 4, 5, 4, 3, 2, 3, 4, 3, 2, 1, 2, 3, 2, 1, 0, 1, 2, 3, 2, 1, 2, 3, 4, 3, 2, 3, 4, 5, 4, 3, 4, 5, 4, 3, 2, 3, 4, 3, 2, 1, 2, 3, 4, 3, 2, 3, 4, 5, 4, 3, 4, 5, 6, 5, 4, 5, 6, 5, 4, 3, 4, 5, 4, 3, 2, 3, 4, 5, 4, 3, 4, 5, 6, 5, 4, 5, 6};
-
- do {
- mpc_int32_t k = 0, idx = 1;
- if (Res != 0) {
- if (Res == 2) {
- Tables[0] = & mpc_can_Q [0][0];
- Tables[1] = & mpc_can_Q [0][1];
- idx = 2 * thres[Res];
- for ( ; k < 36; k += 3) {
- int tmp = mpc_bits_can_dec(r, Tables[idx > thres[Res]]);
- q[k] = idx50[tmp];
- q[k + 1] = idx51[tmp];
- q[k + 2] = idx52[tmp];
- idx = (idx >> 1) + HuffQ2_var[tmp];
- }
- } else if (Res == 1) {
- Table = & mpc_can_Q1;
- for( ; k < 36; ){
- int kmax = k + 18;
- mpc_uint_t cnt = mpc_bits_can_dec(r, Table);
- idx = 0;
- if (cnt > 0 && cnt < 18)
- idx = mpc_bits_enum_dec(r, cnt <= 9 ? cnt : 18 - cnt, 18);
- if (cnt > 9) idx = ~idx;
- for ( ; k < kmax; k++) {
- q[k] = 0;
- if ( idx & (1 << 17) )
- q[k] = (mpc_bits_read(r, 1) << 1) - 1;
- idx <<= 1;
- }
- }
- } else if (Res == -1) {
- for ( ; k<36; k++ ) {
- mpc_uint32_t tmp = mpc_random_int(d);
- q[k] = ((tmp >> 24) & 0xFF) + ((tmp >> 16) & 0xFF) + ((tmp >> 8) & 0xFF) + ((tmp >> 0) & 0xFF) - 510;
- }
- } else if (Res <= 4) {
- Table = & mpc_can_Q[1][Res - 3];
- for ( ; k < 36; k += 2 ) {
- union {
- mpc_int8_t sym;
- struct { mpc_int8_t s1:4, s2:4; };
- } tmp;
- tmp.sym = mpc_bits_can_dec(r, Table);
- q[k] = tmp.s1;
- q[k + 1] = tmp.s2;
- }
- } else if (Res <= 8) {
- Tables[0] = & mpc_can_Q [Res - 3][0];
- Tables[1] = & mpc_can_Q [Res - 3][1];
- idx = 2 * thres[Res];
- for ( ; k < 36; k++ ) {
- q[k] = mpc_bits_can_dec(r, Tables[idx > thres[Res]]);
- idx = (idx >> 1) + absi(q[k]);
- }
- } else {
- for ( ; k < 36; k++ ) {
- q[k] = (unsigned char) mpc_bits_can_dec(r, & mpc_can_Q9up);
- if (Res != 9)
- q[k] = (q[k] << (Res - 9)) | mpc_bits_read(r, Res - 9);
- q[k] -= Dc[Res];
- }
- }
- }
-
- Res = d->Res_R[n];
- } while (q == d->Q[n].L && (q = d->Q[n].R));
- }
-}
-
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