Add HE-AAC v2 support to the AAC decoder.

Originally committed as revision 23647 to svn://svn.ffmpeg.org/ffmpeg/trunk

11 files changed, 1732 insertions, 12 deletions

diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index a8bec0a57f..ecc7856f39 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -42,7 +42,7 @@ OBJS-$(CONFIG_VAAPI)                   += vaapi.o
 OBJS-$(CONFIG_VDPAU)                   += vdpau.o
 
 # decoders/encoders/hardware accelerators
-OBJS-$(CONFIG_AAC_DECODER)             += aacdec.o aactab.o aacsbr.o
+OBJS-$(CONFIG_AAC_DECODER)             += aacdec.o aactab.o aacsbr.o ps.o
 OBJS-$(CONFIG_AAC_ENCODER)             += aacenc.o aaccoder.o    \
                                           aacpsy.o aactab.o      \
                                           psymodel.o iirfilter.o \
@@ -667,5 +667,6 @@ $(SUBDIR)mpegaudiodec.o: $(SUBDIR)mpegaudio_tables.h
 $(SUBDIR)mpegaudiodec_float.o: $(SUBDIR)mpegaudio_tables.h
 $(SUBDIR)motionpixels.o: $(SUBDIR)motionpixels_tables.h
 $(SUBDIR)pcm.o: $(SUBDIR)pcm_tables.h
+$(SUBDIR)ps.o: $(SUBDIR)ps_tables.h
 $(SUBDIR)qdm2.o: $(SUBDIR)qdm2_tables.h
 endif
diff --git a/libavcodec/aacdec.c b/libavcodec/aacdec.c
index ba84678aa8..3c409a69cf 100644
--- a/libavcodec/aacdec.c
+++ b/libavcodec/aacdec.c
@@ -67,7 +67,7 @@
  * Y (not in this code) Layer-2
  * Y (not in this code) Layer-3
  * N                    SinuSoidal Coding (Transient, Sinusoid, Noise)
- * N (planned)          Parametric Stereo
+ * Y                    Parametric Stereo
  * N                    Direct Stream Transfer
  *
  * Note: - HE AAC v1 comprises LC AAC with Spectral Band Replication.
@@ -200,7 +200,8 @@ static av_cold int che_configure(AACContext *ac,
         ff_aac_sbr_ctx_init(&ac->che[type][id]->sbr);
         if (type != TYPE_CCE) {
             ac->output_data[(*channels)++] = ac->che[type][id]->ch[0].ret;
-            if (type == TYPE_CPE) {
+            if (type == TYPE_CPE ||
+                (type == TYPE_SCE && ac->m4ac.ps == 1)) {
                 ac->output_data[(*channels)++] = ac->che[type][id]->ch[1].ret;
             }
         }
@@ -228,6 +229,7 @@ static av_cold int output_configure(AACContext *ac,
     AVCodecContext *avctx = ac->avctx;
     int i, type, channels = 0, ret;
 
+    if (new_che_pos != che_pos)
     memcpy(che_pos, new_che_pos, 4 * MAX_ELEM_ID * sizeof(new_che_pos[0][0]));
 
     if (channel_config) {
@@ -471,6 +473,8 @@ static int decode_audio_specific_config(AACContext *ac, void *data,
         av_log(ac->avctx, AV_LOG_ERROR, "invalid sampling rate index %d\n", ac->m4ac.sampling_index);
         return -1;
     }
+    if (ac->m4ac.sbr == 1 && ac->m4ac.ps == -1)
+        ac->m4ac.ps = 1;
 
     skip_bits_long(&gb, i);
 
@@ -1667,6 +1671,10 @@ static int decode_extension_payload(AACContext *ac, GetBitContext *gb, int cnt,
             av_log(ac->avctx, AV_LOG_ERROR, "Implicit SBR was found with a first occurrence after the first frame.\n");
             skip_bits_long(gb, 8 * cnt - 4);
             return res;
+        } else if (ac->m4ac.ps == -1 && ac->output_configured < OC_LOCKED && ac->avctx->channels == 1) {
+            ac->m4ac.sbr = 1;
+            ac->m4ac.ps = 1;
+            output_configure(ac, ac->che_pos, ac->che_pos, ac->m4ac.chan_config, ac->output_configured);
         } else {
             ac->m4ac.sbr = 1;
         }
@@ -1946,8 +1954,10 @@ static int parse_adts_frame_header(AACContext *ac, GetBitContext *gb)
         } else if (ac->output_configured != OC_LOCKED) {
             ac->output_configured = OC_NONE;
         }
-        if (ac->output_configured != OC_LOCKED)
+        if (ac->output_configured != OC_LOCKED) {
             ac->m4ac.sbr = -1;
+            ac->m4ac.ps  = -1;
+        }
         ac->m4ac.sample_rate     = hdr_info.sample_rate;
         ac->m4ac.sampling_index  = hdr_info.sampling_index;
         ac->m4ac.object_type     = hdr_info.object_type;
diff --git a/libavcodec/aacsbr.c b/libavcodec/aacsbr.c
index b6631a07fc..c8ff299fe0 100644
--- a/libavcodec/aacsbr.c
+++ b/libavcodec/aacsbr.c
@@ -31,6 +31,7 @@
 #include "aacsbr.h"
 #include "aacsbrdata.h"
 #include "fft.h"
+#include "ps.h"
 
 #include <stdint.h>
 #include <float.h>
@@ -120,6 +121,8 @@ av_cold void ff_aac_sbr_init(void)
 
     for (n = 0; n < 320; n++)
         sbr_qmf_window_ds[n] = sbr_qmf_window_us[2*n];
+
+    ff_ps_init();
 }
 
 av_cold void ff_aac_sbr_ctx_init(SpectralBandReplication *sbr)
@@ -130,6 +133,7 @@ av_cold void ff_aac_sbr_ctx_init(SpectralBandReplication *sbr)
     sbr->data[1].synthesis_filterbank_samples_offset = SBR_SYNTHESIS_BUF_SIZE - (1280 - 128);
     ff_mdct_init(&sbr->mdct, 7, 1, 1.0/64);
     ff_mdct_init(&sbr->mdct_ana, 7, 1, -2.0);
+    ff_ps_ctx_init(&sbr->ps);
 }
 
 av_cold void ff_aac_sbr_ctx_close(SpectralBandReplication *sbr)
@@ -890,7 +894,6 @@ static void read_sbr_extension(AACContext *ac, SpectralBandReplication *sbr,
                                GetBitContext *gb,
                                int bs_extension_id, int *num_bits_left)
 {
-//TODO - implement ps_data for parametric stereo parsing
     switch (bs_extension_id) {
     case EXTENSION_ID_PS:
         if (!ac->m4ac.ps) {
@@ -898,8 +901,8 @@ static void read_sbr_extension(AACContext *ac, SpectralBandReplication *sbr,
             skip_bits_long(gb, *num_bits_left); // bs_fill_bits
             *num_bits_left = 0;
         } else {
-#if 0
-            *num_bits_left -= ff_ps_data(gb, ps);
+#if 1
+            *num_bits_left -= ff_ps_read_data(ac->avctx, gb, &sbr->ps, *num_bits_left);
 #else
             av_log_missing_feature(ac->avctx, "Parametric Stereo is", 0);
             skip_bits_long(gb, *num_bits_left); // bs_fill_bits
@@ -1008,6 +1011,11 @@ static unsigned int read_sbr_data(AACContext *ac, SpectralBandReplication *sbr,
             num_bits_left -= 2;
             read_sbr_extension(ac, sbr, gb, get_bits(gb, 2), &num_bits_left); // bs_extension_id
         }
+        if (num_bits_left < 0) {
+            av_log(ac->avctx, AV_LOG_ERROR, "SBR Extension over read.\n");
+        }
+        if (num_bits_left > 0)
+            skip_bits(gb, num_bits_left);
     }
 
     return get_bits_count(gb) - cnt;
@@ -1166,7 +1174,7 @@ static void sbr_qmf_analysis(DSPContext *dsp, FFTContext *mdct, const float *in,
  * (14496-3 sp04 p206)
  */
 static void sbr_qmf_synthesis(DSPContext *dsp, FFTContext *mdct,
-                              float *out, float X[2][32][64],
+                              float *out, float X[2][38][64],
                               float mdct_buf[2][64],
                               float *v0, int *v_off, const unsigned int div,
                               float bias, float scale)
@@ -1402,7 +1410,7 @@ static int sbr_hf_gen(AACContext *ac, SpectralBandReplication *sbr,
 }
 
 /// Generate the subband filtered lowband
-static int sbr_x_gen(SpectralBandReplication *sbr, float X[2][32][64],
+static int sbr_x_gen(SpectralBandReplication *sbr, float X[2][38][64],
                      const float X_low[32][40][2], const float Y[2][38][64][2],
                      int ch)
 {
@@ -1424,7 +1432,7 @@ static int sbr_x_gen(SpectralBandReplication *sbr, float X[2][32][64],
     }
 
     for (k = 0; k < sbr->kx[1]; k++) {
-        for (i = i_Temp; i < i_f; i++) {
+        for (i = i_Temp; i < 38; i++) {
             X[0][i][k] = X_low[k][i + ENVELOPE_ADJUSTMENT_OFFSET][0];
             X[1][i][k] = X_low[k][i + ENVELOPE_ADJUSTMENT_OFFSET][1];
         }
@@ -1740,6 +1748,16 @@ void ff_sbr_apply(AACContext *ac, SpectralBandReplication *sbr, int id_aac,
         /* synthesis */
         sbr_x_gen(sbr, sbr->X[ch], sbr->X_low, sbr->data[ch].Y, ch);
     }
+
+    if (ac->m4ac.ps == 1) {
+        if (sbr->ps.start) {
+            ff_ps_apply(ac->avctx, &sbr->ps, sbr->X[0], sbr->X[1], sbr->kx[1] + sbr->m[1]);
+        } else {
+            memcpy(sbr->X[1], sbr->X[0], sizeof(sbr->X[0]));
+        }
+        nch = 2;
+    }
+
     sbr_qmf_synthesis(&ac->dsp, &sbr->mdct, L, sbr->X[0], sbr->qmf_filter_scratch,
                       sbr->data[0].synthesis_filterbank_samples,
                       &sbr->data[0].synthesis_filterbank_samples_offset,
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 42b20811ca..53ec546295 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -30,7 +30,7 @@
 #include "libavutil/avutil.h"
 
 #define LIBAVCODEC_VERSION_MAJOR 52
-#define LIBAVCODEC_VERSION_MINOR 76
+#define LIBAVCODEC_VERSION_MINOR 77
 #define LIBAVCODEC_VERSION_MICRO  0
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
diff --git a/libavcodec/mpeg4audio.c b/libavcodec/mpeg4audio.c
index 7507212c76..f9951b1604 100644
--- a/libavcodec/mpeg4audio.c
+++ b/libavcodec/mpeg4audio.c
@@ -131,6 +131,14 @@ int ff_mpeg4audio_get_config(MPEG4AudioConfig *c, const uint8_t *buf, int buf_si
                 get_bits1(&gb); // skip 1 bit
         }
     }
+
+    //PS requires SBR
+    if (!c->sbr)
+        c->ps = 0;
+    //Limit implicit PS to the HE-AACv2 Profile
+    if ((c->ps == -1 && c->object_type != AOT_AAC_LC) || c->channels & ~0x01)
+        c->ps = 0;
+
     return specific_config_bitindex;
 }
 
diff --git a/libavcodec/ps.c b/libavcodec/ps.c
new file mode 100644
index 0000000000..1f2922639d
--- /dev/null
+++ b/libavcodec/ps.c
@@ -0,0 +1,1124 @@
+/*
+ * MPEG-4 Parametric Stereo decoding functions
+ * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdint.h>
+#include "libavutil/mathematics.h"
+#include "avcodec.h"
+#include "get_bits.h"
+#include "ps.h"
+#include "ps_tablegen.h"
+#include "psdata.c"
+
+#define PS_BASELINE 0
+
+#define numQMFSlots 32 //numTimeSlots * RATE
+
+static const int8_t num_env_tab[2][4] = {
+    { 0, 1, 2, 4, },
+    { 1, 2, 3, 4, },
+};
+
+static const int8_t nr_iidicc_par_tab[] = {
+    10, 20, 34, 10, 20, 34,
+};
+
+static const int8_t nr_iidopd_par_tab[] = {
+     5, 11, 17,  5, 11, 17,
+};
+
+enum {
+    huff_iid_df1,
+    huff_iid_dt1,
+    huff_iid_df0,
+    huff_iid_dt0,
+    huff_icc_df,
+    huff_icc_dt,
+    huff_ipd_df,
+    huff_ipd_dt,
+    huff_opd_df,
+    huff_opd_dt,
+};
+
+static const int huff_iid[] = {
+    huff_iid_df0,
+    huff_iid_df1,
+    huff_iid_dt0,
+    huff_iid_dt1,
+};
+
+static VLC vlc_ps[10];
+
+/**
+ * Read Inter-channel Intensity Difference parameters from the bitstream.
+ *
+ * @param avctx contains the current codec context
+ * @param gb    pointer to the input bitstream
+ * @param ps    pointer to the Parametric Stereo context
+ * @param e     envelope to decode
+ * @param dt    1: time delta-coded, 0: frequency delta-coded
+ */
+static int iid_data(AVCodecContext *avctx, GetBitContext *gb, PSContext *ps, int e, int dt)
+{
+    int b;
+    int table_idx = huff_iid[2*dt+ps->iid_quant];
+    VLC_TYPE (*vlc_table)[2] = vlc_ps[table_idx].table;
+    if (dt) {
+        int e_prev = e ? e - 1 : ps->num_env_old - 1;
+        e_prev = FFMAX(e_prev, 0);
+        for (b = 0; b < ps->nr_iid_par; b++) {
+            ps->iid_par[e][b] = ps->iid_par[e_prev][b] +
+                                get_vlc2(gb, vlc_table, 9, 3) -
+                                huff_offset[table_idx];
+            if (FFABS(ps->iid_par[e][b]) > 7 + 8 * ps->iid_quant)
+                goto err;
+        }
+    } else {
+        int prev = 0;
+        for (b = 0; b < ps->nr_iid_par; b++) {
+            prev += get_vlc2(gb, vlc_table, 9, 3) -
+                    huff_offset[table_idx];
+            ps->iid_par[e][b] = prev;
+            if (FFABS(ps->iid_par[e][b]) > 7 + 8 * ps->iid_quant)
+                goto err;
+        }
+    }
+    return 0;
+err:
+    av_log(avctx, AV_LOG_ERROR, "illegal iid\n");
+    return -1;
+}
+
+/**
+ * Read Inter-Channel Coherence parameters from the bitstream.
+ *
+ * @param avctx contains the current codec context
+ * @param gb    pointer to the input bitstream
+ * @param ps    pointer to the Parametric Stereo context
+ * @param e     envelope to decode
+ * @param dt    1: time delta-coded, 0: frequency delta-coded
+ */
+static int icc_data(AVCodecContext *avctx, GetBitContext *gb, PSContext *ps, int e, int dt)
+{
+    int b;
+    int table_idx = dt ? huff_icc_dt : huff_icc_df;
+    VLC_TYPE (*vlc_table)[2] = vlc_ps[table_idx].table;
+    if (dt) {
+        int e_prev = e ? e - 1 : ps->num_env_old - 1;
+        e_prev = FFMAX(e_prev, 0);
+        for (b = 0; b < ps->nr_icc_par; b++) {
+            ps->icc_par[e][b] = ps->icc_par[e_prev][b] + get_vlc2(gb, vlc_table, 9, 3) - huff_offset[table_idx];
+            if (ps->icc_par[e][b] > 7U)
+                goto err;
+        }
+    } else {
+        int prev = 0;
+        for (b = 0; b < ps->nr_icc_par; b++) {
+            prev += get_vlc2(gb, vlc_table, 9, 3) - huff_offset[table_idx];
+            ps->icc_par[e][b] = prev;
+            if (ps->icc_par[e][b] > 7U)
+                goto err;
+        }
+    }
+    return 0;
+err:
+    av_log(avctx, AV_LOG_ERROR, "illegal icc\n");
+    return -1;
+}
+
+/**
+ * Read Inter-channel Phase Difference parameters from the bitstream.
+ *
+ * @param gb    pointer to the input bitstream
+ * @param ps    pointer to the Parametric Stereo context
+ * @param e     envelope to decode
+ * @param dt    1: time delta-coded, 0: frequency delta-coded
+ */
+static void ipd_data(GetBitContext *gb, PSContext *ps, int e, int dt)
+{
+    int b;
+    int table_idx = dt ? huff_ipd_dt : huff_ipd_df;
+    VLC_TYPE (*vlc_table)[2] = vlc_ps[table_idx].table;
+    if (dt) {
+        int e_prev = e ? e - 1 : ps->num_env_old - 1;
+        e_prev = FFMAX(e_prev, 0);
+        for (b = 0; b < ps->nr_ipdopd_par; b++) {
+            ps->ipd_par[e][b] = (ps->ipd_par[e_prev][b] + get_vlc2(gb, vlc_table, 9, 1)) & 0x07;
+        }
+    } else {
+        int prev = 0;
+        for (b = 0; b < ps->nr_ipdopd_par; b++) {
+            prev += get_vlc2(gb, vlc_table, 9, 3);
+            prev &= 0x07;
+            ps->ipd_par[e][b] = prev;
+        }
+    }
+}
+
+/**
+ * Read Overall Phase Difference parameters from the bitstream.
+ *
+ * @param gb    pointer to the input bitstream
+ * @param ps    pointer to the Parametric Stereo context
+ * @param e     envelope to decode
+ * @param dt    1: time delta-coded, 0: frequency delta-coded
+ */
+static void opd_data(GetBitContext *gb, PSContext *ps, int e, int dt)
+{
+    int b;
+    int table_idx = dt ? huff_opd_dt : huff_opd_df;
+    VLC_TYPE (*vlc_table)[2] = vlc_ps[table_idx].table;
+    if (dt) {
+        int e_prev = e ? e - 1 : ps->num_env_old - 1;
+        e_prev = FFMAX(e_prev, 0);
+        for (b = 0; b < ps->nr_ipdopd_par; b++) {
+            ps->opd_par[e][b] = (ps->opd_par[e_prev][b] + get_vlc2(gb, vlc_table, 9, 1)) & 0x07;
+        }
+    } else {
+        int prev = 0;
+        for (b = 0; b < ps->nr_ipdopd_par; b++) {
+            prev += get_vlc2(gb, vlc_table, 9, 3);
+            prev &= 0x07;
+            ps->opd_par[e][b] = prev;
+        }
+    }
+}
+
+static int ps_extension(GetBitContext *gb, PSContext *ps, int ps_extension_id)
+{
+    int e;
+    int count = get_bits_count(gb);
+
+    if (ps_extension_id)
+        return 0;
+
+    ps->enable_ipdopd = get_bits1(gb);
+    if (ps->enable_ipdopd) {
+        for (e = 0; e < ps->num_env; e++) {
+            int dt = get_bits1(gb);
+            ipd_data(gb, ps, e, dt);
+            dt = get_bits1(gb);
+            opd_data(gb, ps, e, dt);
+        }
+    }
+    skip_bits1(gb);      //reserved_ps
+    return get_bits_count(gb) - count;
+}
+
+static void ipdopd_reset(int8_t *opd_hist, int8_t *ipd_hist)
+{
+    int i;
+    for (i = 0; i < PS_MAX_NR_IPDOPD; i++) {
+        opd_hist[i] = 0;
+        ipd_hist[i] = 0;
+    }
+}
+
+int ff_ps_read_data(AVCodecContext *avctx, GetBitContext *gb_host, PSContext *ps, int bits_left)
+{
+    int e;
+    int bit_count_start = get_bits_count(gb_host);
+    int header;
+    int bits_consumed;
+    GetBitContext gbc = *gb_host, *gb = &gbc;
+
+    header = get_bits1(gb);
+    if (header) {     //enable_ps_header
+        ps->enable_iid = get_bits1(gb);
+        if (ps->enable_iid) {
+            ps->iid_mode = get_bits(gb, 3);
+            if (ps->iid_mode > 5) {
+                av_log(avctx, AV_LOG_ERROR, "iid_mode %d is reserved.\n",
+                       ps->iid_mode);
+                goto err;
+            }
+            ps->nr_iid_par    = nr_iidicc_par_tab[ps->iid_mode];
+            ps->iid_quant     = ps->iid_mode > 2;
+            ps->nr_ipdopd_par = nr_iidopd_par_tab[ps->iid_mode];
+        }
+        ps->enable_icc = get_bits1(gb);
+        if (ps->enable_icc) {
+            ps->icc_mode = get_bits(gb, 3);
+            if (ps->icc_mode > 5) {
+                av_log(avctx, AV_LOG_ERROR, "icc_mode %d is reserved.\n",
+                       ps->icc_mode);
+                goto err;
+            }
+            ps->nr_icc_par = nr_iidicc_par_tab[ps->icc_mode];
+        }
+        ps->enable_ext = get_bits1(gb);
+    }
+
+    ps->frame_class = get_bits1(gb);
+    ps->num_env_old = ps->num_env;
+    ps->num_env     = num_env_tab[ps->frame_class][get_bits(gb, 2)];
+
+    ps->border_position[0] = -1;
+    if (ps->frame_class) {
+        for (e = 1; e <= ps->num_env; e++)
+            ps->border_position[e] = get_bits(gb, 5);
+    } else
+        for (e = 1; e <= ps->num_env; e++)
+            ps->border_position[e] = e * numQMFSlots / ps->num_env - 1;
+
+    if (ps->enable_iid) {
+        for (e = 0; e < ps->num_env; e++) {
+            int dt = get_bits1(gb);
+            if (iid_data(avctx, gb, ps, e, dt))
+                goto err;
+        }
+    } else
+        memset(ps->iid_par, 0, sizeof(ps->iid_par));
+
+    if (ps->enable_icc)
+        for (e = 0; e < ps->num_env; e++) {
+            int dt = get_bits1(gb);
+            if (icc_data(avctx, gb, ps, e, dt))
+                goto err;
+        }
+    else
+        memset(ps->icc_par, 0, sizeof(ps->icc_par));
+
+    if (ps->enable_ext) {
+        int cnt = get_bits(gb, 4);
+        if (cnt == 15) {
+            cnt += get_bits(gb, 8);
+        }
+        cnt *= 8;
+        while (cnt > 7) {
+            int ps_extension_id = get_bits(gb, 2);
+            cnt -= 2 + ps_extension(gb, ps, ps_extension_id);
+        }
+        if (cnt < 0) {
+            av_log(avctx, AV_LOG_ERROR, "ps extension overflow %d", cnt);
+            goto err;
+        }
+        skip_bits(gb, cnt);
+    }
+
+    ps->enable_ipdopd &= !PS_BASELINE;
+
+    //Fix up envelopes
+    if (!ps->num_env || ps->border_position[ps->num_env] < numQMFSlots - 1) {
+        //Create a fake envelope
+        int source = ps->num_env ? ps->num_env - 1 : ps->num_env_old - 1;
+        if (source >= 0 && source != ps->num_env) {
+            if (ps->enable_iid && ps->num_env_old > 1) {
+                memcpy(ps->iid_par+ps->num_env, ps->iid_par+source, sizeof(ps->iid_par[0]));
+            }
+            if (ps->enable_icc && ps->num_env_old > 1) {
+                memcpy(ps->icc_par+ps->num_env, ps->icc_par+source, sizeof(ps->icc_par[0]));
+            }
+            if (ps->enable_ipdopd && ps->num_env_old > 1) {
+                memcpy(ps->ipd_par+ps->num_env, ps->ipd_par+source, sizeof(ps->ipd_par[0]));
+                memcpy(ps->opd_par+ps->num_env, ps->opd_par+source, sizeof(ps->opd_par[0]));
+            }
+        }
+        ps->num_env++;
+        ps->border_position[ps->num_env] = numQMFSlots - 1;
+    }
+
+
+    ps->is34bands_old = ps->is34bands;
+    if (!PS_BASELINE && (ps->enable_iid || ps->enable_icc))
+        ps->is34bands = (ps->enable_iid && ps->nr_iid_par == 34) ||
+                        (ps->enable_icc && ps->nr_icc_par == 34);
+
+    //Baseline
+    if (!ps->enable_ipdopd) {
+        memset(ps->ipd_par, 0, sizeof(ps->ipd_par));
+        memset(ps->opd_par, 0, sizeof(ps->opd_par));
+    }
+
+    if (header)
+        ps->start = 1;
+
+    bits_consumed = get_bits_count(gb) - bit_count_start;
+    if (bits_consumed <= bits_left) {
+        skip_bits_long(gb_host, bits_consumed);
+        return bits_consumed;
+    }
+    av_log(avctx, AV_LOG_ERROR, "Expected to read %d PS bits actually read %d.\n", bits_left, bits_consumed);
+err:
+    ps->start = 0;
+    skip_bits_long(gb_host, bits_left);
+    return bits_left;
+}
+
+/** Split one subband into 2 subsubbands with a symmetric real filter.
+ * The filter must have its non-center even coefficients equal to zero. */
+static void hybrid2_re(float (*in)[2], float (*out)[32][2], const float filter[7], int len, int reverse)
+{
+    int i, j;
+    for (i = 0; i < len; i++) {
+        float re_in = filter[6] * in[6+i][0];        //real inphase
+        float re_op = 0.0f;                          //real out of phase
+        float im_in = filter[6] * in[6+i][1];        //imag inphase
+        float im_op = 0.0f;                          //imag out of phase
+        for (j = 0; j < 6; j += 2) {
+            re_op += filter[j+1] * (in[i+j+1][0] + in[12-j-1+i][0]);
+            im_op += filter[j+1] * (in[i+j+1][1] + in[12-j-1+i][1]);
+        }
+        out[ reverse][i][0] = re_in + re_op;
+        out[ reverse][i][1] = im_in + im_op;
+        out[!reverse][i][0] = re_in - re_op;
+        out[!reverse][i][1] = im_in - im_op;
+    }
+}
+
+/** Split one subband into 6 subsubbands with a complex filter */
+static void hybrid6_cx(float (*in)[2], float (*out)[32][2], const float (*filter)[7][2], int len)
+{
+    int i, j, ssb;
+    int N = 8;
+    float temp[8][2];
+
+    for (i = 0; i < len; i++) {
+        for (ssb = 0; ssb < N; ssb++) {
+            float sum_re = filter[ssb][6][0] * in[i+6][0], sum_im = filter[ssb][6][0] * in[i+6][1];
+            for (j = 0; j < 6; j++) {
+                float in0_re = in[i+j][0];
+                float in0_im = in[i+j][1];
+                float in1_re = in[i+12-j][0];
+                float in1_im = in[i+12-j][1];
+                sum_re += filter[ssb][j][0] * (in0_re + in1_re) - filter[ssb][j][1] * (in0_im - in1_im);
+                sum_im += filter[ssb][j][0] * (in0_im + in1_im) + filter[ssb][j][1] * (in0_re - in1_re);
+            }
+            temp[ssb][0] = sum_re;
+            temp[ssb][1] = sum_im;
+        }
+        out[0][i][0] = temp[6][0];
+        out[0][i][1] = temp[6][1];
+        out[1][i][0] = temp[7][0];
+        out[1][i][1] = temp[7][1];
+        out[2][i][0] = temp[0][0];
+        out[2][i][1] = temp[0][1];
+        out[3][i][0] = temp[1][0];
+        out[3][i][1] = temp[1][1];
+        out[4][i][0] = temp[2][0] + temp[5][0];
+        out[4][i][1] = temp[2][1] + temp[5][1];
+        out[5][i][0] = temp[3][0] + temp[4][0];
+        out[5][i][1] = temp[3][1] + temp[4][1];
+    }
+}
+
+static void hybrid4_8_12_cx(float (*in)[2], float (*out)[32][2], const float (*filter)[7][2], int N, int len)
+{
+    int i, j, ssb;
+
+    for (i = 0; i < len; i++) {
+        for (ssb = 0; ssb < N; ssb++) {
+            float sum_re = filter[ssb][6][0] * in[i+6][0], sum_im = filter[ssb][6][0] * in[i+6][1];
+            for (j = 0; j < 6; j++) {
+                float in0_re = in[i+j][0];
+                float in0_im = in[i+j][1];
+                float in1_re = in[i+12-j][0];
+                float in1_im = in[i+12-j][1];
+                sum_re += filter[ssb][j][0] * (in0_re + in1_re) - filter[ssb][j][1] * (in0_im - in1_im);
+                sum_im += filter[ssb][j][0] * (in0_im + in1_im) + filter[ssb][j][1] * (in0_re - in1_re);
+            }
+            out[ssb][i][0] = sum_re;
+            out[ssb][i][1] = sum_im;
+        }
+    }
+}
+
+static void hybrid_analysis(float out[91][32][2], float in[5][44][2], float L[2][38][64], int is34, int len)
+{
+    int i, j;
+    for (i = 0; i < 5; i++) {
+        for (j = 0; j < 38; j++) {
+            in[i][j+6][0] = L[0][j][i];
+            in[i][j+6][1] = L[1][j][i];
+        }
+    }
+    if(is34) {
+        hybrid4_8_12_cx(in[0], out,    f34_0_12, 12, len);
+        hybrid4_8_12_cx(in[1], out+12, f34_1_8,   8, len);
+        hybrid4_8_12_cx(in[2], out+20, f34_2_4,   4, len);
+        hybrid4_8_12_cx(in[3], out+24, f34_2_4,   4, len);
+        hybrid4_8_12_cx(in[4], out+28, f34_2_4,   4, len);
+        for (i = 0; i < 59; i++) {
+            for (j = 0; j < len; j++) {
+                out[i+32][j][0] = L[0][j][i+5];
+                out[i+32][j][1] = L[1][j][i+5];
+            }
+        }
+    } else {
+        hybrid6_cx(in[0], out, f20_0_8, len);
+        hybrid2_re(in[1], out+6, g1_Q2, len, 1);
+        hybrid2_re(in[2], out+8, g1_Q2, len, 0);
+        for (i = 0; i < 61; i++) {
+            for (j = 0; j < len; j++) {
+                out[i+10][j][0] = L[0][j][i+3];
+                out[i+10][j][1] = L[1][j][i+3];
+            }
+        }
+    }
+    //update in_buf
+    for (i = 0; i < 5; i++) {
+        memcpy(in[i], in[i]+32, 6 * sizeof(in[i][0]));
+    }
+}
+
+static void hybrid_synthesis(float out[2][38][64], float in[91][32][2], int is34, int len)
+{
+    int i, n;
+    if(is34) {
+        for (n = 0; n < len; n++) {
+            memset(out[0][n], 0, 5*sizeof(out[0][n][0]));
+            memset(out[1][n], 0, 5*sizeof(out[1][n][0]));
+            for(i = 0; i < 12; i++) {
+                out[0][n][0] += in[   i][n][0];
+                out[1][n][0] += in[   i][n][1];
+            }
+            for(i = 0; i < 8; i++) {
+                out[0][n][1] += in[12+i][n][0];
+                out[1][n][1] += in[12+i][n][1];
+            }
+            for(i = 0; i < 4; i++) {
+                out[0][n][2] += in[20+i][n][0];
+                out[1][n][2] += in[20+i][n][1];
+                out[0][n][3] += in[24+i][n][0];
+                out[1][n][3] += in[24+i][n][1];
+                out[0][n][4] += in[28+i][n][0];
+                out[1][n][4] += in[28+i][n][1];
+            }
+        }
+        for (i = 0; i < 59; i++) {
+            for (n = 0; n < len; n++) {
+                out[0][n][i+5] = in[i+32][n][0];
+                out[1][n][i+5] = in[i+32][n][1];
+            }
+        }
+    } else {
+        for (n = 0; n < len; n++) {
+            out[0][n][0] = in[0][n][0] + in[1][n][0] + in[2][n][0] +
+                           in[3][n][0] + in[4][n][0] + in[5][n][0];
+            out[1][n][0] = in[0][n][1] + in[1][n][1] + in[2][n][1] +
+                           in[3][n][1] + in[4][n][1] + in[5][n][1];
+            out[0][n][1] = in[6][n][0] + in[7][n][0];
+            out[1][n][1] = in[6][n][1] + in[7][n][1];
+            out[0][n][2] = in[8][n][0] + in[9][n][0];
+            out[1][n][2] = in[8][n][1] + in[9][n][1];
+        }
+        for (i = 0; i < 61; i++) {
+            for (n = 0; n < len; n++) {
+                out[0][n][i+3] = in[i+10][n][0];
+                out[1][n][i+3] = in[i+10][n][1];
+            }
+        }
+    }
+}
+
+/// All-pass filter decay slope
+#define DECAY_SLOPE      0.05f
+/// Number of frequency bands that can be addressed by the parameter index, b(k)
+static const int   NR_PAR_BANDS[]      = { 20, 34 };
+/// Number of frequency bands that can be addressed by the sub subband index, k
+static const int   NR_BANDS[]          = { 71, 91 };
+/// Start frequency band for the all-pass filter decay slope
+static const int   DECAY_CUTOFF[]      = { 10, 32 };
+/// Number of all-pass filer bands
+static const int   NR_ALLPASS_BANDS[]  = { 30, 50 };
+/// First stereo band using the short one sample delay
+static const int   SHORT_DELAY_BAND[]  = { 42, 62 };
+
+/** Table 8.46 */
+static void map_idx_10_to_20(int8_t *par_mapped, const int8_t *par, int full)
+{
+    int b;
+    if (full)
+        b = 9;
+    else {
+        b = 4;
+        par_mapped[10] = 0;
+    }
+    for (; b >= 0; b--) {
+        par_mapped[2*b+1] = par_mapped[2*b] = par[b];
+    }
+}
+
+static void map_idx_34_to_20(int8_t *par_mapped, const int8_t *par, int full)
+{
+    par_mapped[ 0] = (2*par[ 0] +   par[ 1]) / 3;
+    par_mapped[ 1] = (  par[ 1] + 2*par[ 2]) / 3;
+    par_mapped[ 2] = (2*par[ 3] +   par[ 4]) / 3;
+    par_mapped[ 3] = (  par[ 4] + 2*par[ 5]) / 3;
+    par_mapped[ 4] = (  par[ 6] +   par[ 7]) / 2;
+    par_mapped[ 5] = (  par[ 8] +   par[ 9]) / 2;
+    par_mapped[ 6] =    par[10];
+    par_mapped[ 7] =    par[11];
+    par_mapped[ 8] = (  par[12] +   par[13]) / 2;
+    par_mapped[ 9] = (  par[14] +   par[15]) / 2;
+    par_mapped[10] =    par[16];
+    if (full) {
+        par_mapped[11] =    par[17];
+        par_mapped[12] =    par[18];
+        par_mapped[13] =    par[19];
+        par_mapped[14] = (  par[20] +   par[21]) / 2;
+        par_mapped[15] = (  par[22] +   par[23]) / 2;
+        par_mapped[16] = (  par[24] +   par[25]) / 2;
+        par_mapped[17] = (  par[26] +   par[27]) / 2;
+        par_mapped[18] = (  par[28] +   par[29] +   par[30] +   par[31]) / 4;
+        par_mapped[19] = (  par[32] +   par[33]) / 2;
+    }
+}
+
+static void map_val_34_to_20(float par[PS_MAX_NR_IIDICC])
+{
+    par[ 0] = (2*par[ 0] +   par[ 1]) * 0.33333333f;
+    par[ 1] = (  par[ 1] + 2*par[ 2]) * 0.33333333f;
+    par[ 2] = (2*par[ 3] +   par[ 4]) * 0.33333333f;
+    par[ 3] = (  par[ 4] + 2*par[ 5]) * 0.33333333f;
+    par[ 4] = (  par[ 6] +   par[ 7]) * 0.5f;
+    par[ 5] = (  par[ 8] +   par[ 9]) * 0.5f;
+    par[ 6] =    par[10];
+    par[ 7] =    par[11];
+    par[ 8] = (  par[12] +   par[13]) * 0.5f;
+    par[ 9] = (  par[14] +   par[15]) * 0.5f;
+    par[10] =    par[16];
+    par[11] =    par[17];
+    par[12] =    par[18];
+    par[13] =    par[19];
+    par[14] = (  par[20] +   par[21]) * 0.5f;
+    par[15] = (  par[22] +   par[23]) * 0.5f;
+    par[16] = (  par[24] +   par[25]) * 0.5f;
+    par[17] = (  par[26] +   par[27]) * 0.5f;
+    par[18] = (  par[28] +   par[29] +   par[30] +   par[31]) * 0.25f;
+    par[19] = (  par[32] +   par[33]) * 0.5f;
+}
+
+static void map_idx_10_to_34(int8_t *par_mapped, const int8_t *par, int full)
+{
+    if (full) {
+        par_mapped[33] = par[9];
+        par_mapped[32] = par[9];
+        par_mapped[31] = par[9];
+        par_mapped[30] = par[9];
+        par_mapped[29] = par[9];
+        par_mapped[28] = par[9];
+        par_mapped[27] = par[8];
+        par_mapped[26] = par[8];
+        par_mapped[25] = par[8];
+        par_mapped[24] = par[8];
+        par_mapped[23] = par[7];
+        par_mapped[22] = par[7];
+        par_mapped[21] = par[7];
+        par_mapped[20] = par[7];
+        par_mapped[19] = par[6];
+        par_mapped[18] = par[6];
+        par_mapped[17] = par[5];
+        par_mapped[16] = par[5];
+    } else {
+        par_mapped[16] =      0;
+    }
+    par_mapped[15] = par[4];
+    par_mapped[14] = par[4];
+    par_mapped[13] = par[4];
+    par_mapped[12] = par[4];
+    par_mapped[11] = par[3];
+    par_mapped[10] = par[3];
+    par_mapped[ 9] = par[2];
+    par_mapped[ 8] = par[2];
+    par_mapped[ 7] = par[2];
+    par_mapped[ 6] = par[2];
+    par_mapped[ 5] = par[1];
+    par_mapped[ 4] = par[1];
+    par_mapped[ 3] = par[1];
+    par_mapped[ 2] = par[0];
+    par_mapped[ 1] = par[0];
+    par_mapped[ 0] = par[0];
+}
+
+static void map_idx_20_to_34(int8_t *par_mapped, const int8_t *par, int full)
+{
+    if (full) {
+        par_mapped[33] =  par[19];
+        par_mapped[32] =  par[19];
+        par_mapped[31] =  par[18];
+        par_mapped[30] =  par[18];
+        par_mapped[29] =  par[18];
+        par_mapped[28] =  par[18];
+        par_mapped[27] =  par[17];
+        par_mapped[26] =  par[17];
+        par_mapped[25] =  par[16];
+        par_mapped[24] =  par[16];
+        par_mapped[23] =  par[15];
+        par_mapped[22] =  par[15];
+        par_mapped[21] =  par[14];
+        par_mapped[20] =  par[14];
+        par_mapped[19] =  par[13];
+        par_mapped[18] =  par[12];
+        par_mapped[17] =  par[11];
+    }
+    par_mapped[16] =  par[10];
+    par_mapped[15] =  par[ 9];
+    par_mapped[14] =  par[ 9];
+    par_mapped[13] =  par[ 8];
+    par_mapped[12] =  par[ 8];
+    par_mapped[11] =  par[ 7];
+    par_mapped[10] =  par[ 6];
+    par_mapped[ 9] =  par[ 5];
+    par_mapped[ 8] =  par[ 5];
+    par_mapped[ 7] =  par[ 4];
+    par_mapped[ 6] =  par[ 4];
+    par_mapped[ 5] =  par[ 3];
+    par_mapped[ 4] = (par[ 2] + par[ 3]) / 2;
+    par_mapped[ 3] =  par[ 2];
+    par_mapped[ 2] =  par[ 1];
+    par_mapped[ 1] = (par[ 0] + par[ 1]) / 2;
+    par_mapped[ 0] =  par[ 0];
+}
+
+static void map_val_20_to_34(float par[PS_MAX_NR_IIDICC])
+{
+    par[33] =  par[19];
+    par[32] =  par[19];
+    par[31] =  par[18];
+    par[30] =  par[18];
+    par[29] =  par[18];
+    par[28] =  par[18];
+    par[27] =  par[17];
+    par[26] =  par[17];
+    par[25] =  par[16];
+    par[24] =  par[16];
+    par[23] =  par[15];
+    par[22] =  par[15];
+    par[21] =  par[14];
+    par[20] =  par[14];
+    par[19] =  par[13];
+    par[18] =  par[12];
+    par[17] =  par[11];
+    par[16] =  par[10];
+    par[15] =  par[ 9];
+    par[14] =  par[ 9];
+    par[13] =  par[ 8];
+    par[12] =  par[ 8];
+    par[11] =  par[ 7];
+    par[10] =  par[ 6];
+    par[ 9] =  par[ 5];
+    par[ 8] =  par[ 5];
+    par[ 7] =  par[ 4];
+    par[ 6] =  par[ 4];
+    par[ 5] =  par[ 3];
+    par[ 4] = (par[ 2] + par[ 3]) * 0.5f;
+    par[ 3] =  par[ 2];
+    par[ 2] =  par[ 1];
+    par[ 1] = (par[ 0] + par[ 1]) * 0.5f;
+    par[ 0] =  par[ 0];
+}
+
+static void decorrelation(PSContext *ps, float (*out)[32][2], const float (*s)[32][2], int is34)
+{
+    float power[34][PS_QMF_TIME_SLOTS] = {{0}};
+    float transient_gain[34][PS_QMF_TIME_SLOTS];
+    float *peak_decay_nrg = ps->peak_decay_nrg;
+    float *power_smooth = ps->power_smooth;
+    float *peak_decay_diff_smooth = ps->peak_decay_diff_smooth;
+    float (*delay)[PS_QMF_TIME_SLOTS + PS_MAX_DELAY][2] = ps->delay;
+    float (*ap_delay)[PS_AP_LINKS][PS_QMF_TIME_SLOTS + PS_MAX_AP_DELAY][2] = ps->ap_delay;
+    const int8_t *k_to_i = is34 ? k_to_i_34 : k_to_i_20;
+    const float peak_decay_factor = 0.76592833836465f;
+    const float transient_impact  = 1.5f;
+    const float a_smooth          = 0.25f; //< Smoothing coefficient
+    int i, k, m, n;
+    int n0 = 0, nL = 32;
+    static const int link_delay[] = { 3, 4, 5 };
+    static const float a[] = { 0.65143905753106f,
+                               0.56471812200776f,
+                               0.48954165955695f };
+
+    if (is34 != ps->is34bands_old) {
+        memset(ps->peak_decay_nrg,         0, sizeof(ps->peak_decay_nrg));
+        memset(ps->power_smooth,           0, sizeof(ps->power_smooth));
+        memset(ps->peak_decay_diff_smooth, 0, sizeof(ps->peak_decay_diff_smooth));
+        memset(ps->delay,                  0, sizeof(ps->delay));
+        memset(ps->ap_delay,               0, sizeof(ps->ap_delay));
+    }
+
+    for (n = n0; n < nL; n++) {
+        for (k = 0; k < NR_BANDS[is34]; k++) {
+            int i = k_to_i[k];
+            power[i][n] += s[k][n][0] * s[k][n][0] + s[k][n][1] * s[k][n][1];
+        }
+    }
+
+    //Transient detection
+    for (i = 0; i < NR_PAR_BANDS[is34]; i++) {
+        for (n = n0; n < nL; n++) {
+            float decayed_peak = peak_decay_factor * peak_decay_nrg[i];
+            float denom;
+            peak_decay_nrg[i] = FFMAX(decayed_peak, power[i][n]);
+            power_smooth[i] += a_smooth * (power[i][n] - power_smooth[i]);
+            peak_decay_diff_smooth[i] += a_smooth * (peak_decay_nrg[i] - power[i][n] - peak_decay_diff_smooth[i]);
+            denom = transient_impact * peak_decay_diff_smooth[i];
+            transient_gain[i][n]   = (denom > power_smooth[i]) ?
+                                         power_smooth[i] / denom : 1.0f;
+        }
+    }
+
+    //Decorrelation and transient reduction
+    //                         PS_AP_LINKS - 1
+    //                               -----
+    //                                | |  Q_fract_allpass[k][m]*z^-link_delay[m] - a[m]*g_decay_slope[k]
+    //H[k][z] = z^-2 * phi_fract[k] * | | ----------------------------------------------------------------
+    //                                | | 1 - a[m]*g_decay_slope[k]*Q_fract_allpass[k][m]*z^-link_delay[m]
+    //                               m = 0
+    //d[k][z] (out) = transient_gain_mapped[k][z] * H[k][z] * s[k][z]
+    for (k = 0; k < NR_ALLPASS_BANDS[is34]; k++) {
+        int b = k_to_i[k];
+        float g_decay_slope = 1.f - DECAY_SLOPE * (k - DECAY_CUTOFF[is34]);
+        float ag[PS_AP_LINKS];
+        g_decay_slope = av_clipf(g_decay_slope, 0.f, 1.f);
+        memcpy(delay[k], delay[k]+nL, PS_MAX_DELAY*sizeof(delay[k][0]));
+        memcpy(delay[k]+PS_MAX_DELAY, s[k], numQMFSlots*sizeof(delay[k][0]));
+        for (m = 0; m < PS_AP_LINKS; m++) {
+            memcpy(ap_delay[k][m],   ap_delay[k][m]+numQMFSlots,           5*sizeof(ap_delay[k][m][0]));
+            ag[m] = a[m] * g_decay_slope;
+        }
+        for (n = n0; n < nL; n++) {
+            float in_re = delay[k][n+PS_MAX_DELAY-2][0] * phi_fract[is34][k][0] -
+                          delay[k][n+PS_MAX_DELAY-2][1] * phi_fract[is34][k][1];
+            float in_im = delay[k][n+PS_MAX_DELAY-2][0] * phi_fract[is34][k][1] +
+                          delay[k][n+PS_MAX_DELAY-2][1] * phi_fract[is34][k][0];
+            for (m = 0; m < PS_AP_LINKS; m++) {
+                float a_re                = ag[m] * in_re;
+                float a_im                = ag[m] * in_im;
+                float link_delay_re       = ap_delay[k][m][n+5-link_delay[m]][0];
+                float link_delay_im       = ap_delay[k][m][n+5-link_delay[m]][1];
+                float fractional_delay_re = Q_fract_allpass[is34][k][m][0];
+                float fractional_delay_im = Q_fract_allpass[is34][k][m][1];
+                ap_delay[k][m][n+5][0] = in_re;
+                ap_delay[k][m][n+5][1] = in_im;
+                in_re = link_delay_re * fractional_delay_re - link_delay_im * fractional_delay_im - a_re;
+                in_im = link_delay_re * fractional_delay_im + link_delay_im * fractional_delay_re - a_im;
+                ap_delay[k][m][n+5][0] += ag[m] * in_re;
+                ap_delay[k][m][n+5][1] += ag[m] * in_im;
+            }
+            out[k][n][0] = transient_gain[b][n] * in_re;
+            out[k][n][1] = transient_gain[b][n] * in_im;
+        }
+    }
+    for (; k < SHORT_DELAY_BAND[is34]; k++) {
+        memcpy(delay[k], delay[k]+nL, PS_MAX_DELAY*sizeof(delay[k][0]));
+        memcpy(delay[k]+PS_MAX_DELAY, s[k], numQMFSlots*sizeof(delay[k][0]));
+        for (n = n0; n < nL; n++) {
+            //H = delay 14
+            out[k][n][0] = transient_gain[k_to_i[k]][n] * delay[k][n+PS_MAX_DELAY-14][0];
+            out[k][n][1] = transient_gain[k_to_i[k]][n] * delay[k][n+PS_MAX_DELAY-14][1];
+        }
+    }
+    for (; k < NR_BANDS[is34]; k++) {
+        memcpy(delay[k], delay[k]+nL, PS_MAX_DELAY*sizeof(delay[k][0]));
+        memcpy(delay[k]+PS_MAX_DELAY, s[k], numQMFSlots*sizeof(delay[k][0]));
+        for (n = n0; n < nL; n++) {
+            //H = delay 1
+            out[k][n][0] = transient_gain[k_to_i[k]][n] * delay[k][n+PS_MAX_DELAY-1][0];
+            out[k][n][1] = transient_gain[k_to_i[k]][n] * delay[k][n+PS_MAX_DELAY-1][1];
+        }
+    }
+}
+
+static void remap34(int8_t (**p_par_mapped)[PS_MAX_NR_IIDICC],
+                    int8_t           (*par)[PS_MAX_NR_IIDICC],
+                    int num_par, int num_env, int full)
+{
+    int8_t (*par_mapped)[PS_MAX_NR_IIDICC] = *p_par_mapped;
+    int e;
+    if (num_par == 20 || num_par == 11) {
+        for (e = 0; e < num_env; e++) {
+            map_idx_20_to_34(par_mapped[e], par[e], full);
+        }
+    } else if (num_par == 10 || num_par == 5) {
+        for (e = 0; e < num_env; e++) {
+            map_idx_10_to_34(par_mapped[e], par[e], full);
+        }
+    } else {
+        *p_par_mapped = par;
+    }
+}
+
+static void remap20(int8_t (**p_par_mapped)[PS_MAX_NR_IIDICC],
+                    int8_t           (*par)[PS_MAX_NR_IIDICC],
+                    int num_par, int num_env, int full)
+{
+    int8_t (*par_mapped)[PS_MAX_NR_IIDICC] = *p_par_mapped;
+    int e;
+    if (num_par == 34 || num_par == 17) {
+        for (e = 0; e < num_env; e++) {
+            map_idx_34_to_20(par_mapped[e], par[e], full);
+        }
+    } else if (num_par == 10 || num_par == 5) {
+        for (e = 0; e < num_env; e++) {
+            map_idx_10_to_20(par_mapped[e], par[e], full);
+        }
+    } else {
+        *p_par_mapped = par;
+    }
+}
+
+static void stereo_processing(PSContext *ps, float (*l)[32][2], float (*r)[32][2], int is34)
+{
+    int e, b, k, n;
+
+    float (*H11)[PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC] = ps->H11;
+    float (*H12)[PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC] = ps->H12;
+    float (*H21)[PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC] = ps->H21;
+    float (*H22)[PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC] = ps->H22;
+    int8_t *opd_hist = ps->opd_hist;
+    int8_t *ipd_hist = ps->ipd_hist;
+    int8_t iid_mapped_buf[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC];
+    int8_t icc_mapped_buf[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC];
+    int8_t ipd_mapped_buf[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC];
+    int8_t opd_mapped_buf[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC];
+    int8_t (*iid_mapped)[PS_MAX_NR_IIDICC] = iid_mapped_buf;
+    int8_t (*icc_mapped)[PS_MAX_NR_IIDICC] = icc_mapped_buf;
+    int8_t (*ipd_mapped)[PS_MAX_NR_IIDICC] = ipd_mapped_buf;
+    int8_t (*opd_mapped)[PS_MAX_NR_IIDICC] = opd_mapped_buf;
+    const int8_t *k_to_i = is34 ? k_to_i_34 : k_to_i_20;
+    const float (*H_LUT)[8][4] = (PS_BASELINE || ps->icc_mode < 3) ? HA : HB;
+
+    //Remapping
+    for (b = 0; b < PS_MAX_NR_IIDICC; b++) {
+        H11[0][0][b] = H11[0][ps->num_env_old][b];
+        H12[0][0][b] = H12[0][ps->num_env_old][b];
+        H21[0][0][b] = H21[0][ps->num_env_old][b];
+        H22[0][0][b] = H22[0][ps->num_env_old][b];
+        H11[1][0][b] = H11[1][ps->num_env_old][b];
+        H12[1][0][b] = H12[1][ps->num_env_old][b];
+        H21[1][0][b] = H21[1][ps->num_env_old][b];
+        H22[1][0][b] = H22[1][ps->num_env_old][b];
+    }
+    if (is34) {
+        remap34(&iid_mapped, ps->iid_par, ps->nr_iid_par, ps->num_env, 1);
+        remap34(&icc_mapped, ps->icc_par, ps->nr_icc_par, ps->num_env, 1);
+        if (ps->enable_ipdopd) {
+            remap34(&ipd_mapped, ps->ipd_par, ps->nr_ipdopd_par, ps->num_env, 0);
+            remap34(&opd_mapped, ps->opd_par, ps->nr_ipdopd_par, ps->num_env, 0);
+        }
+        if (!ps->is34bands_old) {
+            map_val_20_to_34(H11[0][0]);
+            map_val_20_to_34(H11[1][0]);
+            map_val_20_to_34(H12[0][0]);
+            map_val_20_to_34(H12[1][0]);
+            map_val_20_to_34(H21[0][0]);
+            map_val_20_to_34(H21[1][0]);
+            map_val_20_to_34(H22[0][0]);
+            map_val_20_to_34(H22[1][0]);
+            ipdopd_reset(ipd_hist, opd_hist);
+        }
+    } else {
+        remap20(&iid_mapped, ps->iid_par, ps->nr_iid_par, ps->num_env, 1);
+        remap20(&icc_mapped, ps->icc_par, ps->nr_icc_par, ps->num_env, 1);
+        if (ps->enable_ipdopd) {
+            remap20(&ipd_mapped, ps->ipd_par, ps->nr_ipdopd_par, ps->num_env, 0);
+            remap20(&opd_mapped, ps->opd_par, ps->nr_ipdopd_par, ps->num_env, 0);
+        }
+        if (ps->is34bands_old) {
+            map_val_34_to_20(H11[0][0]);
+            map_val_34_to_20(H11[1][0]);
+            map_val_34_to_20(H12[0][0]);
+            map_val_34_to_20(H12[1][0]);
+            map_val_34_to_20(H21[0][0]);
+            map_val_34_to_20(H21[1][0]);
+            map_val_34_to_20(H22[0][0]);
+            map_val_34_to_20(H22[1][0]);
+            ipdopd_reset(ipd_hist, opd_hist);
+        }
+    }
+
+    //Mixing
+    for (e = 0; e < ps->num_env; e++) {
+        for (b = 0; b < NR_PAR_BANDS[is34]; b++) {
+            float h11, h12, h21, h22;
+            h11 = H_LUT[iid_mapped[e][b] + 7 + 23 * ps->iid_quant][icc_mapped[e][b]][0];
+            h12 = H_LUT[iid_mapped[e][b] + 7 + 23 * ps->iid_quant][icc_mapped[e][b]][1];
+            h21 = H_LUT[iid_mapped[e][b] + 7 + 23 * ps->iid_quant][icc_mapped[e][b]][2];
+            h22 = H_LUT[iid_mapped[e][b] + 7 + 23 * ps->iid_quant][icc_mapped[e][b]][3];
+            if (!PS_BASELINE && ps->enable_ipdopd && b < ps->nr_ipdopd_par) {
+                //The spec say says to only run this smoother when enable_ipdopd
+                //is set but the reference decoder appears to run it constantly
+                float h11i, h12i, h21i, h22i;
+                float ipd_adj_re, ipd_adj_im;
+                int opd_idx = opd_hist[b] * 8 + opd_mapped[e][b];
+                int ipd_idx = ipd_hist[b] * 8 + ipd_mapped[e][b];
+                float opd_re = pd_re_smooth[opd_idx];
+                float opd_im = pd_im_smooth[opd_idx];
+                float ipd_re = pd_re_smooth[ipd_idx];
+                float ipd_im = pd_im_smooth[ipd_idx];
+                opd_hist[b] = opd_idx & 0x3F;
+                ipd_hist[b] = ipd_idx & 0x3F;
+
+                ipd_adj_re = opd_re*ipd_re + opd_im*ipd_im;
+                ipd_adj_im = opd_im*ipd_re - opd_re*ipd_im;
+                h11i = h11 * opd_im;
+                h11  = h11 * opd_re;
+                h12i = h12 * ipd_adj_im;
+                h12  = h12 * ipd_adj_re;
+                h21i = h21 * opd_im;
+                h21  = h21 * opd_re;
+                h22i = h22 * ipd_adj_im;
+                h22  = h22 * ipd_adj_re;
+                H11[1][e+1][b] = h11i;
+                H12[1][e+1][b] = h12i;
+                H21[1][e+1][b] = h21i;
+                H22[1][e+1][b] = h22i;
+            }
+            H11[0][e+1][b] = h11;
+            H12[0][e+1][b] = h12;
+            H21[0][e+1][b] = h21;
+            H22[0][e+1][b] = h22;
+        }
+        for (k = 0; k < NR_BANDS[is34]; k++) {
+            float h11r, h12r, h21r, h22r;
+            float h11i, h12i, h21i, h22i;
+            float h11r_step, h12r_step, h21r_step, h22r_step;
+            float h11i_step, h12i_step, h21i_step, h22i_step;
+            int start = ps->border_position[e];
+            int stop  = ps->border_position[e+1];
+            float width = 1.f / (stop - start);
+            b = k_to_i[k];
+            h11r = H11[0][e][b];
+            h12r = H12[0][e][b];
+            h21r = H21[0][e][b];
+            h22r = H22[0][e][b];
+            if (!PS_BASELINE && ps->enable_ipdopd) {
+            //Is this necessary? ps_04_new seems unchanged
+            if ((is34 && k <= 13 && k >= 9) || (!is34 && k <= 1)) {
+                h11i = -H11[1][e][b];
+                h12i = -H12[1][e][b];
+                h21i = -H21[1][e][b];
+                h22i = -H22[1][e][b];
+            } else {
+                h11i = H11[1][e][b];
+                h12i = H12[1][e][b];
+                h21i = H21[1][e][b];
+                h22i = H22[1][e][b];
+            }
+            }
+            //Interpolation
+            h11r_step = (H11[0][e+1][b] - h11r) * width;
+            h12r_step = (H12[0][e+1][b] - h12r) * width;
+            h21r_step = (H21[0][e+1][b] - h21r) * width;
+            h22r_step = (H22[0][e+1][b] - h22r) * width;
+            if (!PS_BASELINE && ps->enable_ipdopd) {
+                h11i_step = (H11[1][e+1][b] - h11i) * width;
+                h12i_step = (H12[1][e+1][b] - h12i) * width;
+                h21i_step = (H21[1][e+1][b] - h21i) * width;
+                h22i_step = (H22[1][e+1][b] - h22i) * width;
+            }
+            for (n = start + 1; n <= stop; n++) {
+                //l is s, r is d
+                float l_re = l[k][n][0];
+                float l_im = l[k][n][1];
+                float r_re = r[k][n][0];
+                float r_im = r[k][n][1];
+                h11r += h11r_step;
+                h12r += h12r_step;
+                h21r += h21r_step;
+                h22r += h22r_step;
+                if (!PS_BASELINE && ps->enable_ipdopd) {
+                h11i += h11i_step;
+                h12i += h12i_step;
+                h21i += h21i_step;
+                h22i += h22i_step;
+
+                l[k][n][0] = h11r*l_re + h21r*r_re - h11i*l_im - h21i*r_im;
+                l[k][n][1] = h11r*l_im + h21r*r_im + h11i*l_re + h21i*r_re;
+                r[k][n][0] = h12r*l_re + h22r*r_re - h12i*l_im - h22i*r_im;
+                r[k][n][1] = h12r*l_im + h22r*r_im + h12i*l_re + h22i*r_re;
+                } else {
+                l[k][n][0] = h11r*l_re + h21r*r_re;
+                l[k][n][1] = h11r*l_im + h21r*r_im;
+                r[k][n][0] = h12r*l_re + h22r*r_re;
+                r[k][n][1] = h12r*l_im + h22r*r_im;
+                }
+            }
+        }
+    }
+}
+
+int ff_ps_apply(AVCodecContext *avctx, PSContext *ps, float L[2][38][64], float R[2][38][64], int top)
+{
+    float Lbuf[91][32][2];
+    float Rbuf[91][32][2];
+    const int len = 32;
+    int is34 = ps->is34bands;
+
+    top += NR_BANDS[is34] - 64;
+    memset(ps->delay+top, 0, (NR_BANDS[is34] - top)*sizeof(ps->delay[0]));
+    if (top < NR_ALLPASS_BANDS[is34])
+        memset(ps->ap_delay + top, 0, (NR_ALLPASS_BANDS[is34] - top)*sizeof(ps->ap_delay[0]));
+
+    hybrid_analysis(Lbuf, ps->in_buf, L, is34, len);
+    decorrelation(ps, Rbuf, Lbuf, is34);
+    stereo_processing(ps, Lbuf, Rbuf, is34);
+    hybrid_synthesis(L, Lbuf, is34, len);
+    hybrid_synthesis(R, Rbuf, is34, len);
+
+    return 0;
+}
+
+#define PS_INIT_VLC_STATIC(num, size) \
+    INIT_VLC_STATIC(&vlc_ps[num], 9, ps_tmp[num].table_size / ps_tmp[num].elem_size,    \
+                    ps_tmp[num].ps_bits, 1, 1,                                          \
+                    ps_tmp[num].ps_codes, ps_tmp[num].elem_size, ps_tmp[num].elem_size, \
+                    size);
+
+#define PS_VLC_ROW(name) \
+    { name ## _codes, name ## _bits, sizeof(name ## _codes), sizeof(name ## _codes[0]) }
+
+av_cold void ff_ps_init(void) {
+    // Syntax initialization
+    static const struct {
+        const void *ps_codes, *ps_bits;
+        const unsigned int table_size, elem_size;
+    } ps_tmp[] = {
+        PS_VLC_ROW(huff_iid_df1),
+        PS_VLC_ROW(huff_iid_dt1),
+        PS_VLC_ROW(huff_iid_df0),
+        PS_VLC_ROW(huff_iid_dt0),
+        PS_VLC_ROW(huff_icc_df),
+        PS_VLC_ROW(huff_icc_dt),
+        PS_VLC_ROW(huff_ipd_df),
+        PS_VLC_ROW(huff_ipd_dt),
+        PS_VLC_ROW(huff_opd_df),
+        PS_VLC_ROW(huff_opd_dt),
+    };
+
+    PS_INIT_VLC_STATIC(0, 1544);
+    PS_INIT_VLC_STATIC(1,  832);
+    PS_INIT_VLC_STATIC(2, 1024);
+    PS_INIT_VLC_STATIC(3, 1036);
+    PS_INIT_VLC_STATIC(4,  544);
+    PS_INIT_VLC_STATIC(5,  544);
+    PS_INIT_VLC_STATIC(6,  512);
+    PS_INIT_VLC_STATIC(7,  512);
+    PS_INIT_VLC_STATIC(8,  512);
+    PS_INIT_VLC_STATIC(9,  512);
+
+    ps_tableinit();
+}
+
+av_cold void ff_ps_ctx_init(PSContext *ps)
+{
+    ipdopd_reset(ps->ipd_hist, ps->opd_hist);
+}
diff --git a/libavcodec/ps.h b/libavcodec/ps.h
new file mode 100644
index 0000000000..41c925ccf7
--- /dev/null
+++ b/libavcodec/ps.h
@@ -0,0 +1,80 @@
+/*
+ * MPEG-4 Parametric Stereo definitions and declarations
+ * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_PS_H
+#define AVCODEC_PS_H
+
+#include <stdint.h>
+
+#define PS_MAX_NUM_ENV 5
+#define PS_MAX_NR_IIDICC 34
+#define PS_MAX_NR_IPDOPD 17
+#define PS_MAX_SSB 91
+#define PS_MAX_AP_BANDS 50
+#define PS_QMF_TIME_SLOTS 32
+#define PS_MAX_DELAY 14
+#define PS_AP_LINKS 3
+#define PS_MAX_AP_DELAY 5
+
+typedef struct {
+    int    start;
+    int    enable_iid;
+    int    iid_mode;
+    int    iid_quant;
+    int    nr_iid_par;
+    int    nr_ipdopd_par;
+    int    enable_icc;
+    int    icc_mode;
+    int    nr_icc_par;
+    int    enable_ext;
+    int    frame_class;
+    int    num_env_old;
+    int    num_env;
+    int    enable_ipdopd;
+    int    border_position[PS_MAX_NUM_ENV+1];
+    int8_t iid_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; //<Inter-channel Intensity Difference Parameters
+    int8_t icc_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; //<Inter-Channel Coherence Parameters
+    /* ipd/opd is iid/icc sized so that the same functions can handle both */
+    int8_t ipd_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; //<Inter-channel Phase Difference Parameters
+    int8_t opd_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; //<Overall Phase Difference Parameters
+    int    is34bands;
+    int    is34bands_old;
+
+    float  in_buf[5][44][2];
+    float  delay[PS_MAX_SSB][PS_QMF_TIME_SLOTS + PS_MAX_DELAY][2];
+    float  ap_delay[PS_MAX_AP_BANDS][PS_AP_LINKS][PS_QMF_TIME_SLOTS + PS_MAX_AP_DELAY][2];
+    float  peak_decay_nrg[34];
+    float  power_smooth[34];
+    float  peak_decay_diff_smooth[34];
+    float  H11[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC];
+    float  H12[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC];
+    float  H21[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC];
+    float  H22[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC];
+    int8_t opd_hist[PS_MAX_NR_IIDICC];
+    int8_t ipd_hist[PS_MAX_NR_IIDICC];
+} PSContext;
+
+void ff_ps_init(void);
+void ff_ps_ctx_init(PSContext *ps);
+int ff_ps_read_data(AVCodecContext *avctx, GetBitContext *gb, PSContext *ps, int bits_left);
+int ff_ps_apply(AVCodecContext *avctx, PSContext *ps, float L[2][38][64], float R[2][38][64], int top);
+
+#endif /* AVCODEC_PS_H */
diff --git a/libavcodec/ps_tablegen.c b/libavcodec/ps_tablegen.c
new file mode 100644
index 0000000000..d2835cbde9
--- /dev/null
+++ b/libavcodec/ps_tablegen.c
@@ -0,0 +1,93 @@
+/*
+ * Generate a header file for hardcoded Parametric Stereo tables
+ *
+ * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdlib.h>
+#define CONFIG_HARDCODED_TABLES 0
+#include "ps_tablegen.h"
+#include "tableprint.h"
+
+void write_float_3d_array (const void *p, int b, int c, int d)
+{
+    int i;
+    const float *f = p;
+    for (i = 0; i < b; i++) {
+        printf("{\n");
+        write_float_2d_array(f, c, d);
+        printf("},\n");
+        f += c * d;
+    }
+}
+
+void write_float_4d_array (const void *p, int a, int b, int c, int d)
+{
+    int i;
+    const float *f = p;
+    for (i = 0; i < a; i++) {
+        printf("{\n");
+        write_float_3d_array(f, b, c, d);
+        printf("},\n");
+        f += b * c * d;
+    }
+}
+
+int main(void)
+{
+    ps_tableinit();
+
+    write_fileheader();
+
+    printf("static const float pd_re_smooth[8*8*8] = {\n");
+    write_float_array(pd_re_smooth, 8*8*8);
+    printf("};\n");
+    printf("static const float pd_im_smooth[8*8*8] = {\n");
+    write_float_array(pd_im_smooth, 8*8*8);
+    printf("};\n");
+
+    printf("static const float HA[46][8][4] = {\n");
+    write_float_3d_array(HA, 46, 8, 4);
+    printf("};\n");
+    printf("static const float HB[46][8][4] = {\n");
+    write_float_3d_array(HB, 46, 8, 4);
+    printf("};\n");
+
+    printf("static const float f20_0_8[8][7][2] = {\n");
+    write_float_3d_array(f20_0_8, 8, 7, 2);
+    printf("};\n");
+    printf("static const float f34_0_12[12][7][2] = {\n");
+    write_float_3d_array(f34_0_12, 12, 7, 2);
+    printf("};\n");
+    printf("static const float f34_1_8[8][7][2] = {\n");
+    write_float_3d_array(f34_1_8, 8, 7, 2);
+    printf("};\n");
+    printf("static const float f34_2_4[4][7][2] = {\n");
+    write_float_3d_array(f34_2_4, 4, 7, 2);
+    printf("};\n");
+
+    printf("static const float Q_fract_allpass[2][50][3][2] = {\n");
+    write_float_4d_array(Q_fract_allpass, 2, 50, 3, 2);
+    printf("};\n");
+    printf("static const float phi_fract[2][50][2] = {\n");
+    write_float_3d_array(phi_fract, 2, 50, 2);
+    printf("};\n");
+
+    return 0;
+}
diff --git a/libavcodec/ps_tablegen.h b/libavcodec/ps_tablegen.h
new file mode 100644
index 0000000000..a1773c987c
--- /dev/null
+++ b/libavcodec/ps_tablegen.h
@@ -0,0 +1,221 @@
+/*
+ * Header file for hardcoded Parametric Stereo tables
+ *
+ * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef PS_TABLEGEN_H
+#define PS_TABLEGEN_H
+
+#include <stdint.h>
+#include <math.h>
+
+#if CONFIG_HARDCODED_TABLES
+#define ps_tableinit()
+#include "libavcodec/ps_tables.h"
+#else
+#include "../libavutil/common.h"
+#ifndef M_SQRT1_2
+#define M_SQRT1_2      0.70710678118654752440  /* 1/sqrt(2) */
+#endif
+#ifndef M_PI
+#define M_PI           3.14159265358979323846  /* pi */
+#endif
+#ifndef M_SQRT2
+#define M_SQRT2        1.41421356237309504880  /* sqrt(2) */
+#endif
+#define NR_ALLPASS_BANDS20 30
+#define NR_ALLPASS_BANDS34 50
+#define PS_AP_LINKS 3
+static float pd_re_smooth[8*8*8];
+static float pd_im_smooth[8*8*8];
+static float HA[46][8][4];
+static float HB[46][8][4];
+static float f20_0_8 [ 8][7][2];
+static float f34_0_12[12][7][2];
+static float f34_1_8 [ 8][7][2];
+static float f34_2_4 [ 4][7][2];
+static float Q_fract_allpass[2][50][3][2];
+static float phi_fract[2][50][2];
+
+static const float g0_Q8[] = {
+    0.00746082949812f, 0.02270420949825f, 0.04546865930473f, 0.07266113929591f,
+    0.09885108575264f, 0.11793710567217f, 0.125f
+};
+
+static const float g0_Q12[] = {
+    0.04081179924692f, 0.03812810994926f, 0.05144908135699f, 0.06399831151592f,
+    0.07428313801106f, 0.08100347892914f, 0.08333333333333f
+};
+
+static const float g1_Q8[] = {
+    0.01565675600122f, 0.03752716391991f, 0.05417891378782f, 0.08417044116767f,
+    0.10307344158036f, 0.12222452249753f, 0.125f
+};
+
+static const float g2_Q4[] = {
+    -0.05908211155639f, -0.04871498374946f, 0.0f,   0.07778723915851f,
+     0.16486303567403f,  0.23279856662996f, 0.25f
+};
+
+static void make_filters_from_proto(float (*filter)[7][2], const float *proto, int bands)
+{
+    int q, n;
+    for (q = 0; q < bands; q++) {
+        for (n = 0; n < 7; n++) {
+            double theta = 2 * M_PI * (q + 0.5) * (n - 6) / bands;
+            filter[q][n][0] = proto[n] *  cos(theta);
+            filter[q][n][1] = proto[n] * -sin(theta);
+        }
+    }
+}
+
+static void ps_tableinit(void)
+{
+    static const float ipdopd_sin[] = { 0, M_SQRT1_2, 1,  M_SQRT1_2,  0, -M_SQRT1_2, -1, -M_SQRT1_2 };
+    static const float ipdopd_cos[] = { 1, M_SQRT1_2, 0, -M_SQRT1_2, -1, -M_SQRT1_2,  0,  M_SQRT1_2 };
+    int pd0, pd1, pd2;
+
+    static const float iid_par_dequant[] = {
+        //iid_par_dequant_default
+        0.05623413251903, 0.12589254117942, 0.19952623149689, 0.31622776601684,
+        0.44668359215096, 0.63095734448019, 0.79432823472428, 1,
+        1.25892541179417, 1.58489319246111, 2.23872113856834, 3.16227766016838,
+        5.01187233627272, 7.94328234724282, 17.7827941003892,
+        //iid_par_dequant_fine
+        0.00316227766017, 0.00562341325190, 0.01,             0.01778279410039,
+        0.03162277660168, 0.05623413251903, 0.07943282347243, 0.11220184543020,
+        0.15848931924611, 0.22387211385683, 0.31622776601684, 0.39810717055350,
+        0.50118723362727, 0.63095734448019, 0.79432823472428, 1,
+        1.25892541179417, 1.58489319246111, 1.99526231496888, 2.51188643150958,
+        3.16227766016838, 4.46683592150963, 6.30957344480193, 8.91250938133745,
+        12.5892541179417, 17.7827941003892, 31.6227766016838, 56.2341325190349,
+        100,              177.827941003892, 316.227766016837,
+    };
+    static const float icc_invq[] = {
+        1, 0.937,      0.84118,    0.60092,    0.36764,   0,      -0.589,    -1
+    };
+    static const float acos_icc_invq[] = {
+        0, 0.35685527, 0.57133466, 0.92614472, 1.1943263, M_PI/2, 2.2006171, M_PI
+    };
+    int iid, icc;
+
+    int k, m;
+    static const int8_t f_center_20[] = {
+        -3, -1, 1, 3, 5, 7, 10, 14, 18, 22,
+    };
+    static const int8_t f_center_34[] = {
+         2,  6, 10, 14, 18, 22, 26, 30,
+        34,-10, -6, -2, 51, 57, 15, 21,
+        27, 33, 39, 45, 54, 66, 78, 42,
+       102, 66, 78, 90,102,114,126, 90,
+    };
+    static const float fractional_delay_links[] = { 0.43f, 0.75f, 0.347f };
+    const float fractional_delay_gain = 0.39f;
+
+    for (pd0 = 0; pd0 < 8; pd0++) {
+        float pd0_re = ipdopd_cos[pd0];
+        float pd0_im = ipdopd_sin[pd0];
+        for (pd1 = 0; pd1 < 8; pd1++) {
+            float pd1_re = ipdopd_cos[pd1];
+            float pd1_im = ipdopd_sin[pd1];
+            for (pd2 = 0; pd2 < 8; pd2++) {
+                float pd2_re = ipdopd_cos[pd2];
+                float pd2_im = ipdopd_sin[pd2];
+                float re_smooth = 0.25f * pd0_re + 0.5f * pd1_re + pd2_re;
+                float im_smooth = 0.25f * pd0_im + 0.5f * pd1_im + pd2_im;
+                float pd_mag = 1 / sqrt(im_smooth * im_smooth + re_smooth * re_smooth);
+                pd_re_smooth[pd0*64+pd1*8+pd2] = re_smooth * pd_mag;
+                pd_im_smooth[pd0*64+pd1*8+pd2] = im_smooth * pd_mag;
+            }
+        }
+    }
+
+    for (iid = 0; iid < 46; iid++) {
+        float c = iid_par_dequant[iid]; //<Linear Inter-channel Intensity Difference
+        float c1 = (float)M_SQRT2 / sqrtf(1.0f + c*c);
+        float c2 = c * c1;
+        for (icc = 0; icc < 8; icc++) {
+            /*if (PS_BASELINE || ps->icc_mode < 3)*/ {
+                float alpha = 0.5f * acos_icc_invq[icc];
+                float beta  = alpha * (c1 - c2) * (float)M_SQRT1_2;
+                HA[iid][icc][0] = c2 * cosf(beta + alpha);
+                HA[iid][icc][1] = c1 * cosf(beta - alpha);
+                HA[iid][icc][2] = c2 * sinf(beta + alpha);
+                HA[iid][icc][3] = c1 * sinf(beta - alpha);
+            } /* else */ {
+                float alpha, gamma, mu, rho;
+                float alpha_c, alpha_s, gamma_c, gamma_s;
+                rho = FFMAX(icc_invq[icc], 0.05f);
+                alpha = 0.5f * atan2f(2.0f * c * rho, c*c - 1.0f);
+                mu = c + 1.0f / c;
+                mu = sqrtf(1 + (4 * rho * rho - 4)/(mu * mu));
+                gamma = atanf(sqrtf((1.0f - mu)/(1.0f + mu)));
+                if (alpha < 0) alpha += M_PI/2;
+                alpha_c = cosf(alpha);
+                alpha_s = sinf(alpha);
+                gamma_c = cosf(gamma);
+                gamma_s = sinf(gamma);
+                HB[iid][icc][0] =  M_SQRT2 * alpha_c * gamma_c;
+                HB[iid][icc][1] =  M_SQRT2 * alpha_s * gamma_c;
+                HB[iid][icc][2] = -M_SQRT2 * alpha_s * gamma_s;
+                HB[iid][icc][3] =  M_SQRT2 * alpha_c * gamma_s;
+            }
+        }
+    }
+
+    for (k = 0; k < NR_ALLPASS_BANDS20; k++) {
+        double f_center, theta;
+        if (k < FF_ARRAY_ELEMS(f_center_20))
+            f_center = f_center_20[k] * 0.125;
+        else
+            f_center = k - 6.5f;
+        for (m = 0; m < PS_AP_LINKS; m++) {
+            theta = -M_PI * fractional_delay_links[m] * f_center;
+            Q_fract_allpass[0][k][m][0] = cos(theta);
+            Q_fract_allpass[0][k][m][1] = sin(theta);
+        }
+        theta = -M_PI*fractional_delay_gain*f_center;
+        phi_fract[0][k][0] = cos(theta);
+        phi_fract[0][k][1] = sin(theta);
+    }
+    for (k = 0; k < NR_ALLPASS_BANDS34; k++) {
+        double f_center, theta;
+        if (k < FF_ARRAY_ELEMS(f_center_34))
+            f_center = f_center_34[k] / 24.;
+        else
+            f_center = k - 26.5f;
+        for (m = 0; m < PS_AP_LINKS; m++) {
+            theta = -M_PI * fractional_delay_links[m] * f_center;
+            Q_fract_allpass[1][k][m][0] = cos(theta);
+            Q_fract_allpass[1][k][m][1] = sin(theta);
+        }
+        theta = -M_PI*fractional_delay_gain*f_center;
+        phi_fract[1][k][0] = cos(theta);
+        phi_fract[1][k][1] = sin(theta);
+    }
+
+    make_filters_from_proto(f20_0_8,  g0_Q8,   8);
+    make_filters_from_proto(f34_0_12, g0_Q12, 12);
+    make_filters_from_proto(f34_1_8,  g1_Q8,   8);
+    make_filters_from_proto(f34_2_4,  g2_Q4,   4);
+}
+#endif /* CONFIG_HARDCODED_TABLES */
+
+#endif /* PS_TABLEGEN_H */
diff --git a/libavcodec/psdata.c b/libavcodec/psdata.c
new file mode 100644
index 0000000000..7431caebc6
--- /dev/null
+++ b/libavcodec/psdata.c
@@ -0,0 +1,163 @@
+/*
+ * MPEG-4 Parametric Stereo data tables
+ * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+static const uint8_t huff_iid_df1_bits[] = {
+    18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 18, 17, 17, 16, 16, 15, 14, 14,
+    13, 12, 12, 11, 10, 10,  8,  7,  6,  5,  4,  3,  1,  3,  4,  5,  6,  7,
+     8,  9, 10, 11, 11, 12, 13, 14, 14, 15, 16, 16, 17, 17, 18, 17, 18, 18,
+    18, 18, 18, 18, 18, 18, 18,
+};
+
+static const uint32_t huff_iid_df1_codes[] = {
+    0x01FEB4, 0x01FEB5, 0x01FD76, 0x01FD77, 0x01FD74, 0x01FD75, 0x01FE8A,
+    0x01FE8B, 0x01FE88, 0x00FE80, 0x01FEB6, 0x00FE82, 0x00FEB8, 0x007F42,
+    0x007FAE, 0x003FAF, 0x001FD1, 0x001FE9, 0x000FE9, 0x0007EA, 0x0007FB,
+    0x0003FB, 0x0001FB, 0x0001FF, 0x00007C, 0x00003C, 0x00001C, 0x00000C,
+    0x000000, 0x000001, 0x000001, 0x000002, 0x000001, 0x00000D, 0x00001D,
+    0x00003D, 0x00007D, 0x0000FC, 0x0001FC, 0x0003FC, 0x0003F4, 0x0007EB,
+    0x000FEA, 0x001FEA, 0x001FD6, 0x003FD0, 0x007FAF, 0x007F43, 0x00FEB9,
+    0x00FE83, 0x01FEB7, 0x00FE81, 0x01FE89, 0x01FE8E, 0x01FE8F, 0x01FE8C,
+    0x01FE8D, 0x01FEB2, 0x01FEB3, 0x01FEB0, 0x01FEB1,
+};
+
+static const uint8_t huff_iid_dt1_bits[] = {
+    16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 14, 14, 13,
+    13, 13, 12, 12, 11, 10,  9,  9,  7,  6,  5,  3,  1,  2,  5,  6,  7,  8,
+     9, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16,
+    16, 16, 16, 16, 16, 16, 16,
+};
+
+static const uint16_t huff_iid_dt1_codes[] = {
+    0x004ED4, 0x004ED5, 0x004ECE, 0x004ECF, 0x004ECC, 0x004ED6, 0x004ED8,
+    0x004F46, 0x004F60, 0x002718, 0x002719, 0x002764, 0x002765, 0x00276D,
+    0x0027B1, 0x0013B7, 0x0013D6, 0x0009C7, 0x0009E9, 0x0009ED, 0x0004EE,
+    0x0004F7, 0x000278, 0x000139, 0x00009A, 0x00009F, 0x000020, 0x000011,
+    0x00000A, 0x000003, 0x000001, 0x000000, 0x00000B, 0x000012, 0x000021,
+    0x00004C, 0x00009B, 0x00013A, 0x000279, 0x000270, 0x0004EF, 0x0004E2,
+    0x0009EA, 0x0009D8, 0x0013D7, 0x0013D0, 0x0027B2, 0x0027A2, 0x00271A,
+    0x00271B, 0x004F66, 0x004F67, 0x004F61, 0x004F47, 0x004ED9, 0x004ED7,
+    0x004ECD, 0x004ED2, 0x004ED3, 0x004ED0, 0x004ED1,
+};
+
+static const uint8_t huff_iid_df0_bits[] = {
+    17, 17, 17, 17, 16, 15, 13, 10,  9,  7,  6,  5,  4,  3,  1,  3,  4,  5,
+     6,  6,  8, 11, 13, 14, 14, 15, 17, 18, 18,
+};
+
+static const uint32_t huff_iid_df0_codes[] = {
+    0x01FFFB, 0x01FFFC, 0x01FFFD, 0x01FFFA, 0x00FFFC, 0x007FFC, 0x001FFD,
+    0x0003FE, 0x0001FE, 0x00007E, 0x00003C, 0x00001D, 0x00000D, 0x000005,
+    0x000000, 0x000004, 0x00000C, 0x00001C, 0x00003D, 0x00003E, 0x0000FE,
+    0x0007FE, 0x001FFC, 0x003FFC, 0x003FFD, 0x007FFD, 0x01FFFE, 0x03FFFE,
+    0x03FFFF,
+};
+
+static const uint8_t huff_iid_dt0_bits[] = {
+    19, 19, 19, 20, 20, 20, 17, 15, 12, 10,  8,  6,  4,  2,  1,  3,  5,  7,
+     9, 11, 13, 14, 17, 19, 20, 20, 20, 20, 20,
+};
+
+static const uint32_t huff_iid_dt0_codes[] = {
+    0x07FFF9, 0x07FFFA, 0x07FFFB, 0x0FFFF8, 0x0FFFF9, 0x0FFFFA, 0x01FFFD,
+    0x007FFE, 0x000FFE, 0x0003FE, 0x0000FE, 0x00003E, 0x00000E, 0x000002,
+    0x000000, 0x000006, 0x00001E, 0x00007E, 0x0001FE, 0x0007FE, 0x001FFE,
+    0x003FFE, 0x01FFFC, 0x07FFF8, 0x0FFFFB, 0x0FFFFC, 0x0FFFFD, 0x0FFFFE,
+    0x0FFFFF,
+};
+
+static const uint8_t huff_icc_df_bits[] = {
+    14, 14, 12, 10, 7, 5, 3, 1, 2, 4, 6, 8, 9, 11, 13,
+};
+
+static const uint16_t huff_icc_df_codes[] = {
+    0x3FFF, 0x3FFE, 0x0FFE, 0x03FE, 0x007E, 0x001E, 0x0006, 0x0000,
+    0x0002, 0x000E, 0x003E, 0x00FE, 0x01FE, 0x07FE, 0x1FFE,
+};
+
+static const uint8_t huff_icc_dt_bits[] = {
+    14, 13, 11, 9, 7, 5, 3, 1, 2, 4, 6, 8, 10, 12, 14,
+};
+
+static const uint16_t huff_icc_dt_codes[] = {
+    0x3FFE, 0x1FFE, 0x07FE, 0x01FE, 0x007E, 0x001E, 0x0006, 0x0000,
+    0x0002, 0x000E, 0x003E, 0x00FE, 0x03FE, 0x0FFE, 0x3FFF,
+};
+
+static const uint8_t huff_ipd_df_bits[] = {
+    1, 3, 4, 4, 4, 4, 4, 4,
+};
+
+static const uint8_t huff_ipd_df_codes[] = {
+    0x01, 0x00, 0x06, 0x04, 0x02, 0x03, 0x05, 0x07,
+};
+
+static const uint8_t huff_ipd_dt_bits[] = {
+    1, 3, 4, 5, 5, 4, 4, 3,
+};
+
+static const uint8_t huff_ipd_dt_codes[] = {
+    0x01, 0x02, 0x02, 0x03, 0x02, 0x00, 0x03, 0x03,
+};
+
+static const uint8_t huff_opd_df_bits[] = {
+    1, 3, 4, 4, 5, 5, 4, 3,
+};
+
+static const uint8_t huff_opd_df_codes[] = {
+    0x01, 0x01, 0x06, 0x04, 0x0F, 0x0E, 0x05, 0x00,
+};
+
+static const uint8_t huff_opd_dt_bits[] = {
+    1, 3, 4, 5, 5, 4, 4, 3,
+};
+
+static const uint8_t huff_opd_dt_codes[] = {
+    0x01, 0x02, 0x01, 0x07, 0x06, 0x00, 0x02, 0x03,
+};
+
+static const int8_t huff_offset[] = {
+    30, 30,
+    14, 14,
+    7, 7,
+    0, 0,
+    0, 0,
+};
+
+///Table 8.48
+static const int8_t k_to_i_20[] = {
+     1,  0,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 14, 15,
+    15, 15, 16, 16, 16, 16, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18,
+    18, 18, 18, 18, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19,
+    19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19
+};
+///Table 8.49
+static const int8_t k_to_i_34[] = {
+     0,  1,  2,  3,  4,  5,  6,  6,  7,  2,  1,  0, 10, 10,  4,  5,  6,  7,  8,
+     9, 10, 11, 12,  9, 14, 11, 12, 13, 14, 15, 16, 13, 16, 17, 18, 19, 20, 21,
+    22, 22, 23, 23, 24, 24, 25, 25, 26, 26, 27, 27, 27, 28, 28, 28, 29, 29, 29,
+    30, 30, 30, 31, 31, 31, 31, 32, 32, 32, 32, 33, 33, 33, 33, 33, 33, 33, 33,
+    33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33
+};
+
+static const float g1_Q2[] = {
+    0.0f,  0.01899487526049f, 0.0f, -0.07293139167538f,
+    0.0f,  0.30596630545168f, 0.5f
+};
diff --git a/libavcodec/sbr.h b/libavcodec/sbr.h
index f1da5c5fec..adf799a7e6 100644
--- a/libavcodec/sbr.h
+++ b/libavcodec/sbr.h
@@ -31,6 +31,7 @@
 
 #include <stdint.h>
 #include "fft.h"
+#include "ps.h"
 
 /**
  * Spectral Band Replication header - spectrum parameters that invoke a reset if they differ from the previous header.
@@ -133,6 +134,7 @@ typedef struct {
     ///The number of frequency bands in f_master
     unsigned           n_master;
     SBRData            data[2];
+    PSContext          ps;
     ///N_Low and N_High respectively, the number of frequency bands for low and high resolution
     unsigned           n[2];
     ///Number of noise floor bands
@@ -157,7 +159,7 @@ typedef struct {
     ///QMF output of the HF generator
     float              X_high[64][40][2];
     ///QMF values of the reconstructed signal
-    DECLARE_ALIGNED(16, float, X)[2][2][32][64];
+    DECLARE_ALIGNED(16, float, X)[2][2][38][64];
     ///Zeroth coefficient used to filter the subband signals
     float              alpha0[64][2];
     ///First coefficient used to filter the subband signals