avcodec: Template creation for AAC decoder (SBR-module)

Move the existing code to a new template file.

Signed-off-by: Nedeljko Babic <nedeljko.babic@imgtec.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

1 files changed, 95 insertions, 0 deletions

diff --git a/libavcodec/sbrdsp_template.c b/libavcodec/sbrdsp_template.c
new file mode 100644
index 0000000000..410671e143
--- /dev/null
+++ b/libavcodec/sbrdsp_template.c
@@ -0,0 +1,95 @@
+/*
+ * AAC Spectral Band Replication decoding functions
+ * Copyright (c) 2008-2009 Robert Swain ( rob opendot cl )
+ * Copyright (c) 2009-2010 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 void sbr_sum64x5_c(float *z)
+{
+    int k;
+    for (k = 0; k < 64; k++) {
+        float f = z[k] + z[k + 64] + z[k + 128] + z[k + 192] + z[k + 256];
+        z[k] = f;
+    }
+}
+
+static void sbr_qmf_deint_bfly_c(float *v, const float *src0, const float *src1)
+{
+    int i;
+    for (i = 0; i < 64; i++) {
+        v[      i] = src0[i] - src1[63 - i];
+        v[127 - i] = src0[i] + src1[63 - i];
+    }
+}
+
+static void sbr_hf_apply_noise_0(float (*Y)[2], const float *s_m,
+                                 const float *q_filt, int noise,
+                                 int kx, int m_max)
+{
+    sbr_hf_apply_noise(Y, s_m, q_filt, noise, 1.0, 0.0, m_max);
+}
+
+static void sbr_hf_apply_noise_1(float (*Y)[2], const float *s_m,
+                                 const float *q_filt, int noise,
+                                 int kx, int m_max)
+{
+    float phi_sign = 1 - 2 * (kx & 1);
+    sbr_hf_apply_noise(Y, s_m, q_filt, noise, 0.0, phi_sign, m_max);
+}
+
+static void sbr_hf_apply_noise_2(float (*Y)[2], const float *s_m,
+                                 const float *q_filt, int noise,
+                                 int kx, int m_max)
+{
+    sbr_hf_apply_noise(Y, s_m, q_filt, noise, -1.0, 0.0, m_max);
+}
+
+static void sbr_hf_apply_noise_3(float (*Y)[2], const float *s_m,
+                                 const float *q_filt, int noise,
+                                 int kx, int m_max)
+{
+    float phi_sign = 1 - 2 * (kx & 1);
+    sbr_hf_apply_noise(Y, s_m, q_filt, noise, 0.0, -phi_sign, m_max);
+}
+
+av_cold void ff_sbrdsp_init(SBRDSPContext *s)
+{
+    s->sum64x5 = sbr_sum64x5_c;
+    s->sum_square = sbr_sum_square_c;
+    s->neg_odd_64 = sbr_neg_odd_64_c;
+    s->qmf_pre_shuffle = sbr_qmf_pre_shuffle_c;
+    s->qmf_post_shuffle = sbr_qmf_post_shuffle_c;
+    s->qmf_deint_neg = sbr_qmf_deint_neg_c;
+    s->qmf_deint_bfly = sbr_qmf_deint_bfly_c;
+    s->autocorrelate = sbr_autocorrelate_c;
+    s->hf_gen = sbr_hf_gen_c;
+    s->hf_g_filt = sbr_hf_g_filt_c;
+
+    s->hf_apply_noise[0] = sbr_hf_apply_noise_0;
+    s->hf_apply_noise[1] = sbr_hf_apply_noise_1;
+    s->hf_apply_noise[2] = sbr_hf_apply_noise_2;
+    s->hf_apply_noise[3] = sbr_hf_apply_noise_3;
+
+    if (ARCH_ARM)
+        ff_sbrdsp_init_arm(s);
+    if (ARCH_X86)
+        ff_sbrdsp_init_x86(s);
+    if (ARCH_MIPS)
+        ff_sbrdsp_init_mips(s);
+}