[FFmpeg-devel] [PATCH 09/14] libavcodec: Implementation of AAC_fixed_decoder (PS-module) [1/3]

Nedeljko Babic nedeljko.babic at imgtec.com
Thu May 14 15:34:01 CEST 2015


From: Djordje Pesut <djordje.pesut at imgtec.com>

Move existing code to a new file.

Signed-off-by: Nedeljko Babic <nedeljko.babic at imgtec.com>
---
 libavcodec/aacps.c       | 157 -----------------------------------------
 libavcodec/aacps_float.c | 177 +++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 177 insertions(+), 157 deletions(-)
 create mode 100644 libavcodec/aacps_float.c

diff --git a/libavcodec/aacps.c b/libavcodec/aacps.c
index ea5a5d2..822d6c6 100644
--- a/libavcodec/aacps.c
+++ b/libavcodec/aacps.c
@@ -749,163 +749,6 @@ static void remap20(int8_t (**p_par_mapped)[PS_MAX_NR_IIDICC],
     }
 }
 
-static void stereo_processing(PSContext *ps, float (*l)[32][2], float (*r)[32][2], int is34)
-{
-    int e, b, k;
-
-    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;
-    TABLE_CONST float (*H_LUT)[8][4] = (PS_BASELINE || ps->icc_mode < 3) ? HA : HB;
-
-    //Remapping
-    if (ps->num_env_old) {
-        memcpy(H11[0][0], H11[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H11[0][0][0]));
-        memcpy(H11[1][0], H11[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H11[1][0][0]));
-        memcpy(H12[0][0], H12[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H12[0][0][0]));
-        memcpy(H12[1][0], H12[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H12[1][0][0]));
-        memcpy(H21[0][0], H21[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H21[0][0][0]));
-        memcpy(H21[1][0], H21[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H21[1][0][0]));
-        memcpy(H22[0][0], H22[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H22[0][0][0]));
-        memcpy(H22[1][0], H22[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H22[1][0][0]));
-    }
-
-    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 < NR_IPDOPD_BANDS[is34]) {
-                //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 h[2][4];
-            float h_step[2][4];
-            int start = ps->border_position[e];
-            int stop  = ps->border_position[e+1];
-            float width = 1.f / (stop - start);
-            b = k_to_i[k];
-            h[0][0] = H11[0][e][b];
-            h[0][1] = H12[0][e][b];
-            h[0][2] = H21[0][e][b];
-            h[0][3] = 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)) {
-                h[1][0] = -H11[1][e][b];
-                h[1][1] = -H12[1][e][b];
-                h[1][2] = -H21[1][e][b];
-                h[1][3] = -H22[1][e][b];
-            } else {
-                h[1][0] = H11[1][e][b];
-                h[1][1] = H12[1][e][b];
-                h[1][2] = H21[1][e][b];
-                h[1][3] = H22[1][e][b];
-            }
-            }
-            //Interpolation
-            h_step[0][0] = (H11[0][e+1][b] - h[0][0]) * width;
-            h_step[0][1] = (H12[0][e+1][b] - h[0][1]) * width;
-            h_step[0][2] = (H21[0][e+1][b] - h[0][2]) * width;
-            h_step[0][3] = (H22[0][e+1][b] - h[0][3]) * width;
-            if (!PS_BASELINE && ps->enable_ipdopd) {
-                h_step[1][0] = (H11[1][e+1][b] - h[1][0]) * width;
-                h_step[1][1] = (H12[1][e+1][b] - h[1][1]) * width;
-                h_step[1][2] = (H21[1][e+1][b] - h[1][2]) * width;
-                h_step[1][3] = (H22[1][e+1][b] - h[1][3]) * width;
-            }
-            ps->dsp.stereo_interpolate[!PS_BASELINE && ps->enable_ipdopd](
-                l[k] + start + 1, r[k] + start + 1,
-                h, h_step, stop - start);
-        }
-    }
-}
-
 int ff_ps_apply(AVCodecContext *avctx, PSContext *ps, float L[2][38][64], float R[2][38][64], int top)
 {
     float (*Lbuf)[32][2] = ps->Lbuf;
diff --git a/libavcodec/aacps_float.c b/libavcodec/aacps_float.c
new file mode 100644
index 0000000..93a498c
--- /dev/null
+++ b/libavcodec/aacps_float.c
@@ -0,0 +1,177 @@
+/*
+ * MPEG-4 Parametric Stereo decoding functions
+ * Copyright (c) 2010 Alex Converse <alex.converse at 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 void stereo_processing(PSContext *ps, float (*l)[32][2], float (*r)[32][2], int is34)
+{
+    int e, b, k;
+
+    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;
+    TABLE_CONST float (*H_LUT)[8][4] = (PS_BASELINE || ps->icc_mode < 3) ? HA : HB;
+
+    //Remapping
+    if (ps->num_env_old) {
+        memcpy(H11[0][0], H11[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H11[0][0][0]));
+        memcpy(H11[1][0], H11[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H11[1][0][0]));
+        memcpy(H12[0][0], H12[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H12[0][0][0]));
+        memcpy(H12[1][0], H12[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H12[1][0][0]));
+        memcpy(H21[0][0], H21[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H21[0][0][0]));
+        memcpy(H21[1][0], H21[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H21[1][0][0]));
+        memcpy(H22[0][0], H22[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H22[0][0][0]));
+        memcpy(H22[1][0], H22[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H22[1][0][0]));
+    }
+
+    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 < NR_IPDOPD_BANDS[is34]) {
+                //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 h[2][4];
+            float h_step[2][4];
+            int start = ps->border_position[e];
+            int stop  = ps->border_position[e+1];
+            float width = 1.f / (stop - start);
+            b = k_to_i[k];
+            h[0][0] = H11[0][e][b];
+            h[0][1] = H12[0][e][b];
+            h[0][2] = H21[0][e][b];
+            h[0][3] = 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)) {
+                h[1][0] = -H11[1][e][b];
+                h[1][1] = -H12[1][e][b];
+                h[1][2] = -H21[1][e][b];
+                h[1][3] = -H22[1][e][b];
+            } else {
+                h[1][0] = H11[1][e][b];
+                h[1][1] = H12[1][e][b];
+                h[1][2] = H21[1][e][b];
+                h[1][3] = H22[1][e][b];
+            }
+            }
+            //Interpolation
+            h_step[0][0] = (H11[0][e+1][b] - h[0][0]) * width;
+            h_step[0][1] = (H12[0][e+1][b] - h[0][1]) * width;
+            h_step[0][2] = (H21[0][e+1][b] - h[0][2]) * width;
+            h_step[0][3] = (H22[0][e+1][b] - h[0][3]) * width;
+            if (!PS_BASELINE && ps->enable_ipdopd) {
+                h_step[1][0] = (H11[1][e+1][b] - h[1][0]) * width;
+                h_step[1][1] = (H12[1][e+1][b] - h[1][1]) * width;
+                h_step[1][2] = (H21[1][e+1][b] - h[1][2]) * width;
+                h_step[1][3] = (H22[1][e+1][b] - h[1][3]) * width;
+            }
+            ps->dsp.stereo_interpolate[!PS_BASELINE && ps->enable_ipdopd](
+                l[k] + start + 1, r[k] + start + 1,
+                h, h_step, stop - start);
+        }
+    }
+}
-- 
1.8.2.1



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