+/*
+ * copyright (c) 2001 Fabrice Bellard
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
/**
- * @file mpegaudio.h
+ * @file
* mpeg audio declarations for both encoder and decoder.
*/
+#ifndef AVCODEC_MPEGAUDIO_H
+#define AVCODEC_MPEGAUDIO_H
+
+#ifndef CONFIG_FLOAT
+# define CONFIG_FLOAT 0
+#endif
+
+#include <stdint.h>
+
/* max frame size, in samples */
-#define MPA_FRAME_SIZE 1152
+#define MPA_FRAME_SIZE 1152
/* max compressed frame size */
#define MPA_MAX_CODED_FRAME_SIZE 1792
#define MPA_DUAL 2
#define MPA_MONO 3
-int l2_select_table(int bitrate, int nb_channels, int freq, int lsf);
+#ifndef FRAC_BITS
+#define FRAC_BITS 23 /* fractional bits for sb_samples and dct */
+#define WFRAC_BITS 16 /* fractional bits for window */
+#endif
+
+#define FRAC_ONE (1 << FRAC_BITS)
+
+#define FIX(a) ((int)((a) * FRAC_ONE))
+
+#if CONFIG_FLOAT
+# define INTFLOAT float
+typedef float MPA_INT;
+typedef float OUT_INT;
+#elif FRAC_BITS <= 15
+# define INTFLOAT int
+typedef int16_t MPA_INT;
+typedef int16_t OUT_INT;
+#else
+# define INTFLOAT int
+typedef int32_t MPA_INT;
+typedef int16_t OUT_INT;
+#endif
+
+int ff_mpa_l2_select_table(int bitrate, int nb_channels, int freq, int lsf);
-extern const uint16_t mpa_bitrate_tab[2][3][15];
-extern const uint16_t mpa_freq_tab[3];
-extern const unsigned char *alloc_tables[5];
-extern const double enwindow[512];
-extern const int sblimit_table[5];
-extern const int quant_steps[17];
-extern const int quant_bits[17];
-extern const int32_t mpa_enwindow[257];
+#endif /* AVCODEC_MPEGAUDIO_H */