Add HE-AAC v2 support to the AAC decoder.

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

1 files changed, 93 insertions, 0 deletions

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;
+}