* sync with main liba52 sources

Originally committed as revision 1590 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/liba52/a52.h

@@ -1,6 +1,6 @@
 /*
  * a52.h
- * Copyright (C) 2000-2002 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
  * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
  *
  * This file is part of a52dec, a free ATSC A-52 stream decoder.
@@ -30,10 +30,15 @@
 #undef free
 #undef realloc
 
-#ifndef LIBA52_DOUBLE
-typedef float sample_t;
-#else
+#if defined(LIBA52_FIXED)
+typedef int32_t sample_t;
+typedef int32_t level_t;
+#elif defined(LIBA52_DOUBLE)
 typedef double sample_t;
+typedef double level_t;
+#else
+typedef float sample_t;
+typedef float level_t;
 #endif
 
 typedef struct a52_state_s a52_state_t;
@@ -59,9 +64,9 @@ sample_t * a52_samples (a52_state_t * state);
 int a52_syncinfo (uint8_t * buf, int * flags,
 		  int * sample_rate, int * bit_rate);
 int a52_frame (a52_state_t * state, uint8_t * buf, int * flags,
-	       sample_t * level, sample_t bias);
+	       level_t * level, sample_t bias);
 void a52_dynrng (a52_state_t * state,
-		 sample_t (* call) (sample_t, void *), void * data);
+		 level_t (* call) (level_t, void *), void * data);
 int a52_block (a52_state_t * state);
 void a52_free (a52_state_t * state);
 

libavcodec/liba52/a52_internal.h

@@ -1,6 +1,6 @@
 /*
  * a52_internal.h
- * Copyright (C) 2000-2002 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
  * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
  *
  * This file is part of a52dec, a free ATSC A-52 stream decoder.
@@ -37,24 +37,24 @@ struct a52_state_s {
     uint8_t halfrate;		/* halfrate factor */
     uint8_t acmod;		/* coded channels */
     uint8_t lfeon;		/* coded lfe channel */
-    sample_t clev;		/* centre channel mix level */
-    sample_t slev;		/* surround channels mix level */
+    level_t clev;		/* centre channel mix level */
+    level_t slev;		/* surround channels mix level */
 
     int output;			/* type of output */
-    sample_t level;		/* output level */
+    level_t level;		/* output level */
     sample_t bias;		/* output bias */
 
     int dynrnge;		/* apply dynamic range */
-    sample_t dynrng;		/* dynamic range */
+    level_t dynrng;		/* dynamic range */
     void * dynrngdata;		/* dynamic range callback funtion and data */
-    sample_t (* dynrngcall) (sample_t range, void * dynrngdata);
+    level_t (* dynrngcall) (level_t range, void * dynrngdata);
 
     uint8_t chincpl;		/* channel coupled */
     uint8_t phsflginu;		/* phase flags in use (stereo only) */
     uint8_t cplstrtmant;	/* coupling channel start mantissa */
     uint8_t cplendmant;		/* coupling channel end mantissa */
     uint32_t cplbndstrc;	/* coupling band structure */
-    sample_t cplco[5][18];	/* coupling coordinates */
+    level_t cplco[5][18];	/* coupling coordinates */
 
     /* derived information */
     uint8_t cplstrtbnd;		/* coupling start band (for bit allocation) */
@@ -66,6 +66,11 @@ struct a52_state_s {
 
     uint16_t bai;		/* bit allocation information */
 
+    uint32_t * buffer_start;
+    uint16_t lfsr_state;	/* dither state */
+    uint32_t bits_left;
+    uint32_t current_word;
+
     uint8_t csnroffst;		/* coarse SNR offset */
     ba_t cplba;			/* coupling bit allocation parameters */
     ba_t ba[5];			/* channel bit allocation parameters */
@@ -102,14 +107,54 @@ void a52_bit_allocate (a52_state_t * state, ba_t * ba, int bndstart,
 		       int start, int end, int fastleak, int slowleak,
 		       expbap_t * expbap);
 
-int a52_downmix_init (int input, int flags, sample_t * level,
-		      sample_t clev, sample_t slev);
-int a52_downmix_coeff (sample_t * coeff, int acmod, int output, sample_t level,
-		       sample_t clev, sample_t slev);
+int a52_downmix_init (int input, int flags, level_t * level,
+		      level_t clev, level_t slev);
+int a52_downmix_coeff (level_t * coeff, int acmod, int output, level_t level,
+		       level_t clev, level_t slev);
 void a52_downmix (sample_t * samples, int acmod, int output, sample_t bias,
-		  sample_t clev, sample_t slev);
+		  level_t clev, level_t slev);
 void a52_upmix (sample_t * samples, int acmod, int output);
 
 void a52_imdct_init (uint32_t mm_accel);
 void a52_imdct_256 (sample_t * data, sample_t * delay, sample_t bias);
 void a52_imdct_512 (sample_t * data, sample_t * delay, sample_t bias);
+
+#define ROUND(x) ((int)((x) + ((x) > 0 ? 0.5 : -0.5)))
+
+#ifndef LIBA52_FIXED
+
+typedef sample_t quantizer_t;
+#define SAMPLE(x) (x)
+#define LEVEL(x) (x)
+#define MUL(a,b) ((a) * (b))
+#define MUL_L(a,b) ((a) * (b))
+#define MUL_C(a,b) ((a) * (b))
+#define DIV(a,b) ((a) / (b))
+#define BIAS(x) ((x) + bias)
+
+#else /* LIBA52_FIXED */
+
+typedef int16_t quantizer_t;
+#define SAMPLE(x) (sample_t)((x) * (1 << 30))
+#define LEVEL(x) (level_t)((x) * (1 << 26))
+
+#if 0
+#define MUL(a,b) ((int)(((int64_t)(a) * (b) + (1 << 29)) >> 30))
+#define MUL_L(a,b) ((int)(((int64_t)(a) * (b) + (1 << 25)) >> 26))
+#elif 1
+#define MUL(a,b) \
+({ int32_t _ta=(a), _tb=(b), _tc; \
+   _tc=(_ta & 0xffff)*(_tb >> 16)+(_ta >> 16)*(_tb & 0xffff); (int32_t)(((_tc >> 14))+ (((_ta >> 16)*(_tb >> 16)) << 2 )); })
+#define MUL_L(a,b) \
+({ int32_t _ta=(a), _tb=(b), _tc; \
+   _tc=(_ta & 0xffff)*(_tb >> 16)+(_ta >> 16)*(_tb & 0xffff); (int32_t)((_tc >> 10) + (((_ta >> 16)*(_tb >> 16)) << 6)); })
+#else
+#define MUL(a,b) (((a) >> 15) * ((b) >> 15))
+#define MUL_L(a,b) (((a) >> 13) * ((b) >> 13))
+#endif
+
+#define MUL_C(a,b) MUL_L (a, LEVEL (b))
+#define DIV(a,b) ((((int64_t)LEVEL (a)) << 26) / (b))
+#define BIAS(x) (x)
+
+#endif

libavcodec/liba52/audio_out.h

@@ -1,64 +0,0 @@
-/*
- * audio_out.h
- * Copyright (C) 2000-2002 Michel Lespinasse <walken@zoy.org>
- * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
- *
- * This file is part of a52dec, a free ATSC A-52 stream decoder.
- * See http://liba52.sourceforge.net/ for updates.
- *
- * a52dec is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * a52dec 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-typedef struct ao_instance_s ao_instance_t;
-
-struct ao_instance_s {
-    int (* setup) (ao_instance_t * instance, int sample_rate, int * flags,
-		   sample_t * level, sample_t * bias);
-    int (* play) (ao_instance_t * instance, int flags, sample_t * samples);
-    void (* close) (ao_instance_t * instance);
-};
-
-typedef ao_instance_t * ao_open_t (void);
-
-typedef struct ao_driver_s {
-    char * name;
-    ao_open_t * open;
-} ao_driver_t;
-
-/* return NULL terminated array of all drivers */
-ao_driver_t * ao_drivers (void);
-
-static inline ao_instance_t * ao_open (ao_open_t * open)
-{
-    return open ();
-}
-
-static inline int ao_setup (ao_instance_t * instance, int sample_rate,
-			    int * flags, sample_t * level, sample_t * bias)
-{
-    return instance->setup (instance, sample_rate, flags, level, bias);
-}
-
-static inline int ao_play (ao_instance_t * instance, int flags,
-			   sample_t * samples)
-{
-    return instance->play (instance, flags, samples);
-}
-
-static inline void ao_close (ao_instance_t * instance)
-{
-    if (instance->close)
-	instance->close (instance);
-}

libavcodec/liba52/bit_allocate.c

@@ -1,6 +1,6 @@
 /*
  * bit_allocate.c
- * Copyright (C) 2000-2002 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
  * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
  *
  * This file is part of a52dec, a free ATSC A-52 stream decoder.
@@ -20,6 +20,11 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
+
+#include "config.h"
+
+#include <inttypes.h>
+
 #include "a52.h"
 #include "a52_internal.h"
 
@@ -226,7 +231,7 @@ void a52_bit_allocate (a52_state_t * state, ba_t * ba, int bndstart,
 	int startband, endband;
 
 	startband = j;
-	endband = ((bndtab-20)[i] < end) ? (bndtab-20)[i] : end;
+	endband = (bndtab[i-20] < end) ? bndtab[i-20] : end;
 	psd = 128 * exp[j++];
 	while (j < endband) {
 	    int next, delta;

libavcodec/liba52/bitstream.c

@@ -1,6 +1,6 @@
 /*
  * bitstream.c
- * Copyright (C) 2000-2002 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
  * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
  *
  * This file is part of a52dec, a free ATSC A-52 stream decoder.
@@ -21,34 +21,33 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#include "config.h"
+
+#include <inttypes.h>
+
 #include "a52.h"
 #include "a52_internal.h"
 #include "bitstream.h"
 
 #define BUFFER_SIZE 4096
 
-static uint32_t * buffer_start;
-
-uint32_t a52_bits_left;
-uint32_t a52_current_word;
-
-void a52_bitstream_set_ptr (uint8_t * buf)
+void a52_bitstream_set_ptr (a52_state_t * state, uint8_t * buf)
 {
     int align;
 
     align = (long)buf & 3;
-    buffer_start = (uint32_t *) (buf - align);
-    a52_bits_left = 0;
-    bitstream_get (align * 8);
+    state->buffer_start = (uint32_t *) (buf - align);
+    state->bits_left = 0;
+    state->current_word = 0;
+    bitstream_get (state, align * 8);
 }
 
-static inline void
-bitstream_fill_current()
+static inline void bitstream_fill_current (a52_state_t * state)
 {
     uint32_t tmp;
 
-    tmp = *(buffer_start++);
-    a52_current_word = swab32 (tmp);
+    tmp = *(state->buffer_start++);
+    state->current_word = swab32 (tmp);
 }
 
 /*
@@ -60,40 +59,38 @@ bitstream_fill_current()
  * -ah
  */
 
-uint32_t
-a52_bitstream_get_bh(uint32_t num_bits)
+uint32_t a52_bitstream_get_bh (a52_state_t * state, uint32_t num_bits)
 {
     uint32_t result;
 
-    num_bits -= a52_bits_left;
-    result = ((a52_current_word << (32 - a52_bits_left)) >>
-	      (32 - a52_bits_left));
+    num_bits -= state->bits_left;
+    result = ((state->current_word << (32 - state->bits_left)) >>
+	      (32 - state->bits_left));
 
-    bitstream_fill_current();
+    bitstream_fill_current (state);
 
-    if(num_bits != 0)
-	result = (result << num_bits) | (a52_current_word >> (32 - num_bits));
+    if (num_bits != 0)
+	result = (result << num_bits) | (state->current_word >> (32 - num_bits));
 
-    a52_bits_left = 32 - num_bits;
+    state->bits_left = 32 - num_bits;
 
     return result;
 }
 
-int32_t
-a52_bitstream_get_bh_2(uint32_t num_bits)
+int32_t a52_bitstream_get_bh_2 (a52_state_t * state, uint32_t num_bits)
 {
     int32_t result;
 
-    num_bits -= a52_bits_left;
-    result = ((((int32_t)a52_current_word) << (32 - a52_bits_left)) >>
-	      (32 - a52_bits_left));
+    num_bits -= state->bits_left;
+    result = ((((int32_t)state->current_word) << (32 - state->bits_left)) >>
+	      (32 - state->bits_left));
 
-    bitstream_fill_current();
+    bitstream_fill_current(state);
 
-    if(num_bits != 0)
-	result = (result << num_bits) | (a52_current_word >> (32 - num_bits));
+    if (num_bits != 0)
+	result = (result << num_bits) | (state->current_word >> (32 - num_bits));
 	
-    a52_bits_left = 32 - num_bits;
+    state->bits_left = 32 - num_bits;
 
     return result;
 }

libavcodec/liba52/bitstream.h

@@ -1,6 +1,6 @@
 /*
  * bitstream.h
- * Copyright (C) 2000-2002 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
  * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
  *
  * This file is part of a52dec, a free ATSC A-52 stream decoder.
@@ -46,37 +46,32 @@
 #	endif
 #endif
 
-extern uint32_t a52_bits_left;
-extern uint32_t a52_current_word;
+void a52_bitstream_set_ptr (a52_state_t * state, uint8_t * buf);
+uint32_t a52_bitstream_get_bh (a52_state_t * state, uint32_t num_bits);
+int32_t a52_bitstream_get_bh_2 (a52_state_t * state, uint32_t num_bits);
 
-void a52_bitstream_set_ptr (uint8_t * buf);
-uint32_t a52_bitstream_get_bh(uint32_t num_bits);
-int32_t a52_bitstream_get_bh_2(uint32_t num_bits);
-
-static inline uint32_t 
-bitstream_get(uint32_t num_bits)
+static inline uint32_t bitstream_get (a52_state_t * state, uint32_t num_bits)
 {
     uint32_t result;
 	
-    if(num_bits < a52_bits_left) {
-	result = (a52_current_word << (32 - a52_bits_left)) >> (32 - num_bits);
-	a52_bits_left -= num_bits;
+    if (num_bits < state->bits_left) {
+	result = (state->current_word << (32 - state->bits_left)) >> (32 - num_bits);
+	state->bits_left -= num_bits;
 	return result;
     }
 
-    return a52_bitstream_get_bh(num_bits);
+    return a52_bitstream_get_bh (state, num_bits);
 }
 
-static inline int32_t 
-bitstream_get_2(uint32_t num_bits)
+static inline int32_t bitstream_get_2 (a52_state_t * state, uint32_t num_bits)
 {
     int32_t result;
 	
-    if(num_bits < a52_bits_left) {
-	result = (((int32_t)a52_current_word) << (32 - a52_bits_left)) >> (32 - num_bits);
-	a52_bits_left -= num_bits;
+    if (num_bits < state->bits_left) {
+	result = (((int32_t)state->current_word) << (32 - state->bits_left)) >> (32 - num_bits);
+	state->bits_left -= num_bits;
 	return result;
     }
 
-    return a52_bitstream_get_bh_2(num_bits);
+    return a52_bitstream_get_bh_2 (state, num_bits);
 }

libavcodec/liba52/downmix.c

@@ -1,6 +1,6 @@
 /*
  * downmix.c
- * Copyright (C) 2000-2002 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
  * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
  *
  * This file is part of a52dec, a free ATSC A-52 stream decoder.
@@ -21,13 +21,18 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#include "config.h"
+
+#include <string.h>
+#include <inttypes.h>
+
 #include "a52.h"
 #include "a52_internal.h"
 
 #define CONVERT(acmod,output) (((output) << 3) + (acmod))
 
-int a52_downmix_init (int input, int flags, sample_t * level,
-		      sample_t clev, sample_t slev)
+int a52_downmix_init (int input, int flags, level_t * level,
+		      level_t clev, level_t slev)
 {
     static uint8_t table[11][8] = {
 	{A52_CHANNEL,	A52_DOLBY,	A52_STEREO,	A52_STEREO,
@@ -61,94 +66,106 @@ int a52_downmix_init (int input, int flags, sample_t * level,
 
     output = table[output][input & 7];
 
-    if ((output == A52_STEREO) &&
-	((input == A52_DOLBY) || ((input == A52_3F) && (clev == LEVEL_3DB))))
+    if (output == A52_STEREO &&
+	(input == A52_DOLBY || (input == A52_3F && clev == LEVEL (LEVEL_3DB))))
 	output = A52_DOLBY;
 
-    if (flags & A52_ADJUST_LEVEL)
+    if (flags & A52_ADJUST_LEVEL) {
+	level_t adjust;
+
 	switch (CONVERT (input & 7, output)) {
 
 	case CONVERT (A52_3F, A52_MONO):
-	    *level *= LEVEL_3DB / (1 + clev);
+	    adjust = DIV (LEVEL_3DB, LEVEL (1) + clev);
 	    break;
 
 	case CONVERT (A52_STEREO, A52_MONO):
 	case CONVERT (A52_2F2R, A52_2F1R):
 	case CONVERT (A52_3F2R, A52_3F1R):
 	level_3db:
-	    *level *= LEVEL_3DB;
+	    adjust = LEVEL (LEVEL_3DB);
 	    break;
 
 	case CONVERT (A52_3F2R, A52_2F1R):
-	    if (clev < LEVEL_PLUS3DB - 1)
+	    if (clev < LEVEL (LEVEL_PLUS3DB - 1))
 		goto level_3db;
 	    /* break thru */
 	case CONVERT (A52_3F, A52_STEREO):
 	case CONVERT (A52_3F1R, A52_2F1R):
 	case CONVERT (A52_3F1R, A52_2F2R):
 	case CONVERT (A52_3F2R, A52_2F2R):
-	    *level /= 1 + clev;
+	    adjust = DIV (1, LEVEL (1) + clev);
 	    break;
 
 	case CONVERT (A52_2F1R, A52_MONO):
-	    *level *= LEVEL_PLUS3DB / (2 + slev);
+	    adjust = DIV (LEVEL_PLUS3DB, LEVEL (2) + slev);
 	    break;
 
 	case CONVERT (A52_2F1R, A52_STEREO):
 	case CONVERT (A52_3F1R, A52_3F):
-	    *level /= 1 + slev * LEVEL_3DB;
+	    adjust = DIV (1, LEVEL (1) + MUL_C (slev, LEVEL_3DB));
 	    break;
 
 	case CONVERT (A52_3F1R, A52_MONO):
-	    *level *= LEVEL_3DB / (1 + clev + 0.5 * slev);
+	    adjust = DIV (LEVEL_3DB, LEVEL (1) + clev + MUL_C (slev, 0.5));
 	    break;
 
 	case CONVERT (A52_3F1R, A52_STEREO):
-	    *level /= 1 + clev + slev * LEVEL_3DB;
+	    adjust = DIV (1, LEVEL (1) + clev + MUL_C (slev, LEVEL_3DB));
 	    break;
 
 	case CONVERT (A52_2F2R, A52_MONO):
-	    *level *= LEVEL_3DB / (1 + slev);
+	    adjust = DIV (LEVEL_3DB, LEVEL (1) + slev);
 	    break;
 
 	case CONVERT (A52_2F2R, A52_STEREO):
 	case CONVERT (A52_3F2R, A52_3F):
-	    *level /= 1 + slev;
+	    adjust = DIV (1, LEVEL (1) + slev);
 	    break;
 
 	case CONVERT (A52_3F2R, A52_MONO):
-	    *level *= LEVEL_3DB / (1 + clev + slev);
+	    adjust = DIV (LEVEL_3DB, LEVEL (1) + clev + slev);
 	    break;
 
 	case CONVERT (A52_3F2R, A52_STEREO):
-	    *level /= 1 + clev + slev;
+	    adjust = DIV (1, LEVEL (1) + clev + slev);
 	    break;
 
 	case CONVERT (A52_MONO, A52_DOLBY):
-	    *level *= LEVEL_PLUS3DB;
+	    adjust = LEVEL (LEVEL_PLUS3DB);
 	    break;
 
 	case CONVERT (A52_3F, A52_DOLBY):
 	case CONVERT (A52_2F1R, A52_DOLBY):
-	    *level *= 1 / (1 + LEVEL_3DB);
+	    adjust = LEVEL (1 / (1 + LEVEL_3DB));
 	    break;
 
 	case CONVERT (A52_3F1R, A52_DOLBY):
 	case CONVERT (A52_2F2R, A52_DOLBY):
-	    *level *= 1 / (1 + 2 * LEVEL_3DB);
+	    adjust = LEVEL (1 / (1 + 2 * LEVEL_3DB));
 	    break;
 
 	case CONVERT (A52_3F2R, A52_DOLBY):
-	    *level *= 1 / (1 + 3 * LEVEL_3DB);
+	    adjust = LEVEL (1 / (1 + 3 * LEVEL_3DB));
 	    break;
+
+	default:
+	    return output;
 	}
 
+	*level = MUL_L (*level, adjust);
+    }
+
     return output;
 }
 
-int a52_downmix_coeff (sample_t * coeff, int acmod, int output, sample_t level,
-		       sample_t clev, sample_t slev)
+int a52_downmix_coeff (level_t * coeff, int acmod, int output, level_t level,
+		       level_t clev, level_t slev)
 {
+    level_t level_3db;
+
+    level_3db = MUL_C (level, LEVEL_3DB);
+
     switch (CONVERT (acmod, output & A52_CHANNEL_MASK)) {
 
     case CONVERT (A52_CHANNEL, A52_CHANNEL):
@@ -164,120 +181,138 @@ int a52_downmix_coeff (sample_t * coeff, int acmod, int output, sample_t level,
 	return 0;
 
     case CONVERT (A52_CHANNEL, A52_MONO):
-	coeff[0] = coeff[1] = level * LEVEL_6DB;
+	coeff[0] = coeff[1] = MUL_C (level, LEVEL_6DB);
 	return 3;
 
     case CONVERT (A52_STEREO, A52_MONO):
-	coeff[0] = coeff[1] = level * LEVEL_3DB;
+	coeff[0] = coeff[1] = level_3db;
 	return 3;
 
     case CONVERT (A52_3F, A52_MONO):
-	coeff[0] = coeff[2] = level * LEVEL_3DB;
-	coeff[1] = level * clev * LEVEL_PLUS3DB;
+	coeff[0] = coeff[2] = level_3db;
+	coeff[1] = MUL_C (MUL_L (level_3db, clev), LEVEL_PLUS6DB);
 	return 7;
 
     case CONVERT (A52_2F1R, A52_MONO):
-	coeff[0] = coeff[1] = level * LEVEL_3DB;
-	coeff[2] = level * slev * LEVEL_3DB;
+	coeff[0] = coeff[1] = level_3db;
+	coeff[2] = MUL_L (level_3db, slev);
 	return 7;
 
     case CONVERT (A52_2F2R, A52_MONO):
-	coeff[0] = coeff[1] = level * LEVEL_3DB;
-	coeff[2] = coeff[3] = level * slev * LEVEL_3DB;
+	coeff[0] = coeff[1] = level_3db;
+	coeff[2] = coeff[3] = MUL_L (level_3db, slev);
 	return 15;
 
     case CONVERT (A52_3F1R, A52_MONO):
-	coeff[0] = coeff[2] = level * LEVEL_3DB;
-	coeff[1] = level * clev * LEVEL_PLUS3DB;
-	coeff[3] = level * slev * LEVEL_3DB;
+	coeff[0] = coeff[2] = level_3db;
+	coeff[1] = MUL_C (MUL_L (level_3db, clev), LEVEL_PLUS6DB);
+	coeff[3] = MUL_L (level_3db, slev);
 	return 15;
 
     case CONVERT (A52_3F2R, A52_MONO):
-	coeff[0] = coeff[2] = level * LEVEL_3DB;
-	coeff[1] = level * clev * LEVEL_PLUS3DB;
-	coeff[3] = coeff[4] = level * slev * LEVEL_3DB;
+	coeff[0] = coeff[2] = level_3db;
+	coeff[1] = MUL_C (MUL_L (level_3db, clev), LEVEL_PLUS6DB);
+	coeff[3] = coeff[4] = MUL_L (level_3db, slev);
 	return 31;
 
     case CONVERT (A52_MONO, A52_DOLBY):
-	coeff[0] = level * LEVEL_3DB;
+	coeff[0] = level_3db;
 	return 0;
 
     case CONVERT (A52_3F, A52_DOLBY):
-	clev = LEVEL_3DB;
+	coeff[0] = coeff[2] = coeff[3] = coeff[4] = level;
+	coeff[1] = level_3db;
+	return 7;
+
     case CONVERT (A52_3F, A52_STEREO):
     case CONVERT (A52_3F1R, A52_2F1R):
     case CONVERT (A52_3F2R, A52_2F2R):
 	coeff[0] = coeff[2] = coeff[3] = coeff[4] = level;
-	coeff[1] = level * clev;
+	coeff[1] = MUL_L (level, clev);
 	return 7;
 
     case CONVERT (A52_2F1R, A52_DOLBY):
-	slev = 1;
+	coeff[0] = coeff[1] = level;
+	coeff[2] = level_3db;
+	return 7;
+
     case CONVERT (A52_2F1R, A52_STEREO):
 	coeff[0] = coeff[1] = level;
-	coeff[2] = level * slev * LEVEL_3DB;
+	coeff[2] = MUL_L (level_3db, slev);
 	return 7;
 
     case CONVERT (A52_3F1R, A52_DOLBY):
-	clev = LEVEL_3DB;
-	slev = 1;
+	coeff[0] = coeff[2] = level;
+	coeff[1] = coeff[3] = level_3db;
+	return 15;
+
     case CONVERT (A52_3F1R, A52_STEREO):
 	coeff[0] = coeff[2] = level;
-	coeff[1] = level * clev;
-	coeff[3] = level * slev * LEVEL_3DB;
+	coeff[1] = MUL_L (level, clev);
+	coeff[3] = MUL_L (level_3db, slev);
 	return 15;
 
     case CONVERT (A52_2F2R, A52_DOLBY):
-	slev = LEVEL_3DB;
+	coeff[0] = coeff[1] = level;
+	coeff[2] = coeff[3] = level_3db;
+	return 15;
+
     case CONVERT (A52_2F2R, A52_STEREO):
 	coeff[0] = coeff[1] = level;
-	coeff[2] = coeff[3] = level * slev;
+	coeff[2] = coeff[3] = MUL_L (level, slev);
 	return 15;
 
     case CONVERT (A52_3F2R, A52_DOLBY):
-	clev = LEVEL_3DB;
+	coeff[0] = coeff[2] = level;
+	coeff[1] = coeff[3] = coeff[4] = level_3db;
+	return 31;
+
     case CONVERT (A52_3F2R, A52_2F1R):
-	slev = LEVEL_3DB;
+	coeff[0] = coeff[2] = level;
+	coeff[1] = MUL_L (level, clev);
+	coeff[3] = coeff[4] = level_3db;
+	return 31;
+
     case CONVERT (A52_3F2R, A52_STEREO):
 	coeff[0] = coeff[2] = level;
-	coeff[1] = level * clev;
-	coeff[3] = coeff[4] = level * slev;
+	coeff[1] = MUL_L (level, clev);
+	coeff[3] = coeff[4] = MUL_L (level, slev);
 	return 31;
 
     case CONVERT (A52_3F1R, A52_3F):
 	coeff[0] = coeff[1] = coeff[2] = level;
-	coeff[3] = level * slev * LEVEL_3DB;
+	coeff[3] = MUL_L (level_3db, slev);
 	return 13;
 
     case CONVERT (A52_3F2R, A52_3F):
 	coeff[0] = coeff[1] = coeff[2] = level;
-	coeff[3] = coeff[4] = level * slev;
+	coeff[3] = coeff[4] = MUL_L (level, slev);
 	return 29;
 
     case CONVERT (A52_2F2R, A52_2F1R):
 	coeff[0] = coeff[1] = level;
-	coeff[2] = coeff[3] = level * LEVEL_3DB;
+	coeff[2] = coeff[3] = level_3db;
 	return 12;
 
     case CONVERT (A52_3F2R, A52_3F1R):
 	coeff[0] = coeff[1] = coeff[2] = level;
-	coeff[3] = coeff[4] = level * LEVEL_3DB;
+	coeff[3] = coeff[4] = level_3db;
 	return 24;
 
     case CONVERT (A52_2F1R, A52_2F2R):
 	coeff[0] = coeff[1] = level;
-	coeff[2] = level * LEVEL_3DB;
+	coeff[2] = level_3db;
 	return 0;
 
     case CONVERT (A52_3F1R, A52_2F2R):
 	coeff[0] = coeff[2] = level;
-	coeff[1] = level * clev;
-	coeff[3] = level * LEVEL_3DB;
+	coeff[1] = MUL_L (level, clev);
+	coeff[3] = level_3db;
 	return 7;
 
     case CONVERT (A52_3F1R, A52_3F2R):
 	coeff[0] = coeff[1] = coeff[2] = level;
-	coeff[3] = level * LEVEL_3DB;
+	coeff[3] = level_3db;
 	return 0;
 
     case CONVERT (A52_CHANNEL, A52_CHANNEL1):
@@ -299,7 +334,7 @@ static void mix2to1 (sample_t * dest, sample_t * src, sample_t bias)
     int i;
 
     for (i = 0; i < 256; i++)
-	dest[i] += src[i] + bias;
+	dest[i] += BIAS (src[i]);
 }
 
 static void mix3to1 (sample_t * samples, sample_t bias)
@@ -307,7 +342,7 @@ static void mix3to1 (sample_t * samples, sample_t bias)
     int i;
 
     for (i = 0; i < 256; i++)
-	samples[i] += samples[i + 256] + samples[i + 512] + bias;
+	samples[i] += BIAS (samples[i + 256] + samples[i + 512]);
 }
 
 static void mix4to1 (sample_t * samples, sample_t bias)
@@ -315,8 +350,8 @@ static void mix4to1 (sample_t * samples, sample_t bias)
     int i;
 
     for (i = 0; i < 256; i++)
-	samples[i] += (samples[i + 256] + samples[i + 512] +
-		       samples[i + 768] + bias);
+	samples[i] += BIAS (samples[i + 256] + samples[i + 512] +
+			    samples[i + 768]);
 }
 
 static void mix5to1 (sample_t * samples, sample_t bias)
@@ -324,8 +359,8 @@ static void mix5to1 (sample_t * samples, sample_t bias)
     int i;
 
     for (i = 0; i < 256; i++)
-	samples[i] += (samples[i + 256] + samples[i + 512] +
-		       samples[i + 768] + samples[i + 1024] + bias);
+	samples[i] += BIAS (samples[i + 256] + samples[i + 512] +
+			    samples[i + 768] + samples[i + 1024]);
 }
 
 static void mix3to2 (sample_t * samples, sample_t bias)
@@ -334,7 +369,7 @@ static void mix3to2 (sample_t * samples, sample_t bias)
     sample_t common;
 
     for (i = 0; i < 256; i++) {
-	common = samples[i + 256] + bias;
+	common = BIAS (samples[i + 256]);
 	samples[i] += common;
 	samples[i + 256] = samples[i + 512] + common;
     }
@@ -346,7 +381,7 @@ static void mix21to2 (sample_t * left, sample_t * right, sample_t bias)
     sample_t common;
 
     for (i = 0; i < 256; i++) {
-	common = right[i + 256] + bias;
+	common = BIAS (right[i + 256]);
 	left[i] += common;
 	right[i] += common;
     }
@@ -359,8 +394,8 @@ static void mix21toS (sample_t * samples, sample_t bias)
 
     for (i = 0; i < 256; i++) {
 	surround = samples[i + 512];
-	samples[i] += bias - surround;
-	samples[i + 256] += bias + surround;
+	samples[i] += BIAS (-surround);
+	samples[i + 256] += BIAS (surround);
     }
 }
 
@@ -370,7 +405,7 @@ static void mix31to2 (sample_t * samples, sample_t bias)
     sample_t common;
 
     for (i = 0; i < 256; i++) {
-	common = samples[i + 256] + samples[i + 768] + bias;
+	common = BIAS (samples[i + 256] + samples[i + 768]);
 	samples[i] += common;
 	samples[i + 256] = samples[i + 512] + common;
     }
@@ -382,7 +417,7 @@ static void mix31toS (sample_t * samples, sample_t bias)
     sample_t common, surround;
 
     for (i = 0; i < 256; i++) {
-	common = samples[i + 256] + bias;
+	common = BIAS (samples[i + 256]);
 	surround = samples[i + 768];
 	samples[i] += common - surround;
 	samples[i + 256] = samples[i + 512] + common + surround;
@@ -396,8 +431,8 @@ static void mix22toS (sample_t * samples, sample_t bias)
 
     for (i = 0; i < 256; i++) {
 	surround = samples[i + 512] + samples[i + 768];
-	samples[i] += bias - surround;
-	samples[i + 256] += bias + surround;
+	samples[i] += BIAS (-surround);
+	samples[i + 256] += BIAS (surround);
     }
 }
 
@@ -407,7 +442,7 @@ static void mix32to2 (sample_t * samples, sample_t bias)
     sample_t common;
 
     for (i = 0; i < 256; i++) {
-	common = samples[i + 256] + bias;
+	common = BIAS (samples[i + 256]);
 	samples[i] += common + samples[i + 768];
 	samples[i + 256] = common + samples[i + 512] + samples[i + 1024];
     }
@@ -419,7 +454,7 @@ static void mix32toS (sample_t * samples, sample_t bias)
     sample_t common, surround;
 
     for (i = 0; i < 256; i++) {
-	common = samples[i + 256] + bias;
+	common = BIAS (samples[i + 256]);
 	surround = samples[i + 768] + samples[i + 1024];
 	samples[i] += common - surround;
 	samples[i + 256] = samples[i + 512] + common + surround;
@@ -431,7 +466,7 @@ static void move2to1 (sample_t * src, sample_t * dest, sample_t bias)
     int i;
 
     for (i = 0; i < 256; i++)
-	dest[i] = src[i] + src[i + 256] + bias;
+	dest[i] = BIAS (src[i] + src[i + 256]);
 }
 
 static void zero (sample_t * samples)
@@ -443,7 +478,7 @@ static void zero (sample_t * samples)
 }
 
 void a52_downmix (sample_t * samples, int acmod, int output, sample_t bias,
-		  sample_t clev, sample_t slev)
+		  level_t clev, level_t slev)
 {
     switch (CONVERT (acmod, output & A52_CHANNEL_MASK)) {
 
@@ -578,7 +613,7 @@ void a52_downmix (sample_t * samples, int acmod, int output, sample_t bias,
 	break;
 
     case CONVERT (A52_3F1R, A52_3F2R):
-	memcpy (samples + 1027, samples + 768, 256 * sizeof (sample_t));
+	memcpy (samples + 1024, samples + 768, 256 * sizeof (sample_t));
 	break;
     }
 }

libavcodec/liba52/imdct.c

@@ -1,6 +1,6 @@
 /*
  * imdct.c
- * Copyright (C) 2000-2002 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
  * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
  *
  * The ifft algorithms in this file have been largely inspired by Dan
@@ -24,6 +24,18 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#include "config.h"
+
+#include <math.h>
+#include <stdio.h>
+#ifdef LIBA52_DJBFFT
+#include <fftc4.h>
+#endif
+#ifndef M_PI
+#define M_PI 3.1415926535897932384626433832795029
+#endif
+#include <inttypes.h>
+
 #include "a52.h"
 #include "a52_internal.h"
 #include "mm_accel.h"
@@ -33,8 +45,6 @@ typedef struct complex_s {
     sample_t imag;
 } complex_t;
 
-static complex_t buf[128];
-
 static uint8_t fftorder[] = {
       0,128, 64,192, 32,160,224, 96, 16,144, 80,208,240,112, 48,176,
       8,136, 72,200, 40,168,232,104,248,120, 56,184, 24,152,216, 88,
@@ -65,7 +75,7 @@ static void (* ifft64) (complex_t * buf);
 
 static inline void ifft2 (complex_t * buf)
 {
-    double r, i;
+    sample_t r, i;
 
     r = buf[0].real;
     i = buf[0].imag;
@@ -77,7 +87,7 @@ static inline void ifft2 (complex_t * buf)
 
 static inline void ifft4 (complex_t * buf)
 {
-    double tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7, tmp8;
+    sample_t tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7, tmp8;
 
     tmp1 = buf[0].real + buf[1].real;
     tmp2 = buf[3].real + buf[2].real;
@@ -98,25 +108,37 @@ static inline void ifft4 (complex_t * buf)
     buf[3].imag = tmp6 - tmp8;
 }
 
+/* basic radix-2 ifft butterfly */
+
+#define BUTTERFLY_0(t0,t1,W0,W1,d0,d1) do {	\
+    t0 = MUL (W1, d1) + MUL (W0, d0);		\
+    t1 = MUL (W0, d1) - MUL (W1, d0);		\
+} while (0)
+
+/* radix-2 ifft butterfly with bias */
+
+#define BUTTERFLY_B(t0,t1,W0,W1,d0,d1) do {	\
+    t0 = BIAS (MUL (d1, W1) + MUL (d0, W0));	\
+    t1 = BIAS (MUL (d1, W0) - MUL (d0, W1));	\
+} while (0)
+
 /* the basic split-radix ifft butterfly */
 
-#define BUTTERFLY(a0,a1,a2,a3,wr,wi) do {	\
-    tmp5 = a2.real * wr + a2.imag * wi;		\
-    tmp6 = a2.imag * wr - a2.real * wi;		\
-    tmp7 = a3.real * wr - a3.imag * wi;		\
-    tmp8 = a3.imag * wr + a3.real * wi;		\
-    tmp1 = tmp5 + tmp7;				\
-    tmp2 = tmp6 + tmp8;				\
-    tmp3 = tmp6 - tmp8;				\
-    tmp4 = tmp7 - tmp5;				\
-    a2.real = a0.real - tmp1;			\
-    a2.imag = a0.imag - tmp2;			\
-    a3.real = a1.real - tmp3;			\
-    a3.imag = a1.imag - tmp4;			\
-    a0.real += tmp1;				\
-    a0.imag += tmp2;				\
-    a1.real += tmp3;				\
-    a1.imag += tmp4;				\
+#define BUTTERFLY(a0,a1,a2,a3,wr,wi) do {		\
+    BUTTERFLY_0 (tmp5, tmp6, wr, wi, a2.real, a2.imag);	\
+    BUTTERFLY_0 (tmp8, tmp7, wr, wi, a3.imag, a3.real);	\
+    tmp1 = tmp5 + tmp7;					\
+    tmp2 = tmp6 + tmp8;					\
+    tmp3 = tmp6 - tmp8;					\
+    tmp4 = tmp7 - tmp5;					\
+    a2.real = a0.real - tmp1;				\
+    a2.imag = a0.imag - tmp2;				\
+    a3.real = a1.real - tmp3;				\
+    a3.imag = a1.imag - tmp4;				\
+    a0.real += tmp1;					\
+    a0.imag += tmp2;					\
+    a1.real += tmp3;					\
+    a1.imag += tmp4;					\
 } while (0)
 
 /* split-radix ifft butterfly, specialized for wr=1 wi=0 */
@@ -139,10 +161,10 @@ static inline void ifft4 (complex_t * buf)
 /* split-radix ifft butterfly, specialized for wr=wi */
 
 #define BUTTERFLY_HALF(a0,a1,a2,a3,w) do {	\
-    tmp5 = (a2.real + a2.imag) * w;		\
-    tmp6 = (a2.imag - a2.real) * w;		\
-    tmp7 = (a3.real - a3.imag) * w;		\
-    tmp8 = (a3.imag + a3.real) * w;		\
+    tmp5 = MUL (a2.real + a2.imag, w);		\
+    tmp6 = MUL (a2.imag - a2.real, w);		\
+    tmp7 = MUL (a3.real - a3.imag, w);		\
+    tmp8 = MUL (a3.imag + a3.real, w);		\
     tmp1 = tmp5 + tmp7;				\
     tmp2 = tmp6 + tmp8;				\
     tmp3 = tmp6 - tmp8;				\
@@ -159,7 +181,7 @@ static inline void ifft4 (complex_t * buf)
 
 static inline void ifft8 (complex_t * buf)
 {
-    double tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7, tmp8;
+    sample_t tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7, tmp8;
 
     ifft4 (buf);
     ifft2 (buf + 4);
@@ -173,7 +195,7 @@ static void ifft_pass (complex_t * buf, sample_t * weight, int n)
     complex_t * buf1;
     complex_t * buf2;
     complex_t * buf3;
-    double tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7, tmp8;
+    sample_t tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7, tmp8;
     int i;
 
     buf++;
@@ -186,7 +208,8 @@ static void ifft_pass (complex_t * buf, sample_t * weight, int n)
     i = n - 1;
 
     do {
-	BUTTERFLY (buf[0], buf1[0], buf2[0], buf3[0], weight[n], weight[2*i]);
+	BUTTERFLY (buf[0], buf1[0], buf2[0], buf3[0],
+		   weight[0], weight[2*i-n]);
 	buf++;
 	buf1++;
 	buf2++;
@@ -200,7 +223,7 @@ static void ifft16 (complex_t * buf)
     ifft8 (buf);
     ifft4 (buf + 8);
     ifft4 (buf + 12);
-    ifft_pass (buf, roots16 - 4, 4);
+    ifft_pass (buf, roots16, 4);
 }
 
 static void ifft32 (complex_t * buf)
@@ -208,7 +231,7 @@ static void ifft32 (complex_t * buf)
     ifft16 (buf);
     ifft8 (buf + 16);
     ifft8 (buf + 24);
-    ifft_pass (buf, roots32 - 8, 8);
+    ifft_pass (buf, roots32, 8);
 }
 
 static void ifft64_c (complex_t * buf)
@@ -216,7 +239,7 @@ static void ifft64_c (complex_t * buf)
     ifft32 (buf);
     ifft16 (buf + 32);
     ifft16 (buf + 48);
-    ifft_pass (buf, roots64 - 16, 16);
+    ifft_pass (buf, roots64, 16);
 }
 
 static void ifft128_c (complex_t * buf)
@@ -224,11 +247,11 @@ static void ifft128_c (complex_t * buf)
     ifft32 (buf);
     ifft16 (buf + 32);
     ifft16 (buf + 48);
-    ifft_pass (buf, roots64 - 16, 16);
+    ifft_pass (buf, roots64, 16);
 
     ifft32 (buf + 64);
     ifft32 (buf + 96);
-    ifft_pass (buf, roots128 - 32, 32);
+    ifft_pass (buf, roots128, 32);
 }
 
 void a52_imdct_512 (sample_t * data, sample_t * delay, sample_t bias)
@@ -236,14 +259,13 @@ void a52_imdct_512 (sample_t * data, sample_t * delay, sample_t bias)
     int i, k;
     sample_t t_r, t_i, a_r, a_i, b_r, b_i, w_1, w_2;
     const sample_t * window = a52_imdct_window;
+    complex_t buf[128];
 	
     for (i = 0; i < 128; i++) {
 	k = fftorder[i];
 	t_r = pre1[i].real;
 	t_i = pre1[i].imag;
-
-	buf[i].real = t_i * data[255-k] + t_r * data[k];
-	buf[i].imag = t_r * data[255-k] - t_i * data[k];
+	BUTTERFLY_0 (buf[i].real, buf[i].imag, t_r, t_i, data[k], data[255-k]);
     }
 
     ifft128 (buf);
@@ -254,47 +276,35 @@ void a52_imdct_512 (sample_t * data, sample_t * delay, sample_t bias)
 	/* y[n] = z[n] * (xcos1[n] + j * xsin1[n]) ; */
 	t_r = post1[i].real;
 	t_i = post1[i].imag;
-
-	a_r = t_r * buf[i].real     + t_i * buf[i].imag;
-	a_i = t_i * buf[i].real     - t_r * buf[i].imag;
-	b_r = t_i * buf[127-i].real + t_r * buf[127-i].imag;
-	b_i = t_r * buf[127-i].real - t_i * buf[127-i].imag;
+	BUTTERFLY_0 (a_r, a_i, t_i, t_r, buf[i].imag, buf[i].real);
+	BUTTERFLY_0 (b_r, b_i, t_r, t_i, buf[127-i].imag, buf[127-i].real);
 
 	w_1 = window[2*i];
 	w_2 = window[255-2*i];
-	data[2*i]     = delay[2*i] * w_2 - a_r * w_1 + bias;
-	data[255-2*i] = delay[2*i] * w_1 + a_r * w_2 + bias;
+	BUTTERFLY_B (data[255-2*i], data[2*i], w_2, w_1, a_r, delay[2*i]);
 	delay[2*i] = a_i;
 
 	w_1 = window[2*i+1];
 	w_2 = window[254-2*i];
-	data[2*i+1]   = delay[2*i+1] * w_2 + b_r * w_1 + bias;
-	data[254-2*i] = delay[2*i+1] * w_1 - b_r * w_2 + bias;
+	BUTTERFLY_B (data[2*i+1], data[254-2*i], w_1, w_2, b_r, delay[2*i+1]);
 	delay[2*i+1] = b_i;
     }
 }
 
-void a52_imdct_256(sample_t data[],sample_t delay[],sample_t bias)
+void a52_imdct_256 (sample_t * data, sample_t * delay, sample_t bias)
 {
     int i, k;
     sample_t t_r, t_i, a_r, a_i, b_r, b_i, c_r, c_i, d_r, d_i, w_1, w_2;
-    complex_t * buf1, * buf2;
     const sample_t * window = a52_imdct_window;
-
-    buf1 = &buf[0];
-    buf2 = &buf[64];
+    complex_t buf1[64], buf2[64];
 
     /* Pre IFFT complex multiply plus IFFT cmplx conjugate */
     for (i = 0; i < 64; i++) {
 	k = fftorder[i];
 	t_r = pre2[i].real;
 	t_i = pre2[i].imag;
-
-	buf1[i].real = t_i * data[254-k] + t_r * data[k];
-	buf1[i].imag = t_r * data[254-k] - t_i * data[k];
-
-	buf2[i].real = t_i * data[255-k] + t_r * data[k+1];
-	buf2[i].imag = t_r * data[255-k] - t_i * data[k+1];
+	BUTTERFLY_0 (buf1[i].real, buf1[i].imag, t_r, t_i, data[k], data[254-k]);
+	BUTTERFLY_0 (buf2[i].real, buf2[i].imag, t_r, t_i, data[k+1], data[255-k]);
     }
 
     ifft64 (buf1);
@@ -306,39 +316,29 @@ void a52_imdct_256(sample_t data[],sample_t delay[],sample_t bias)
 	/* y1[n] = z1[n] * (xcos2[n] + j * xs in2[n]) ; */ 
 	t_r = post2[i].real;
 	t_i = post2[i].imag;
-
-	a_r = t_r * buf1[i].real    + t_i * buf1[i].imag;
-	a_i = t_i * buf1[i].real    - t_r * buf1[i].imag;
-	b_r = t_i * buf1[63-i].real + t_r * buf1[63-i].imag;
-	b_i = t_r * buf1[63-i].real - t_i * buf1[63-i].imag;
-
-	c_r = t_r * buf2[i].real    + t_i * buf2[i].imag;
-	c_i = t_i * buf2[i].real    - t_r * buf2[i].imag;
-	d_r = t_i * buf2[63-i].real + t_r * buf2[63-i].imag;
-	d_i = t_r * buf2[63-i].real - t_i * buf2[63-i].imag;
+	BUTTERFLY_0 (a_r, a_i, t_i, t_r, buf1[i].imag, buf1[i].real);
+	BUTTERFLY_0 (b_r, b_i, t_r, t_i, buf1[63-i].imag, buf1[63-i].real);
+	BUTTERFLY_0 (c_r, c_i, t_i, t_r, buf2[i].imag, buf2[i].real);
+	BUTTERFLY_0 (d_r, d_i, t_r, t_i, buf2[63-i].imag, buf2[63-i].real);
 
 	w_1 = window[2*i];
 	w_2 = window[255-2*i];
-	data[2*i]     = delay[2*i] * w_2 - a_r * w_1 + bias;
-	data[255-2*i] = delay[2*i] * w_1 + a_r * w_2 + bias;
+	BUTTERFLY_B (data[255-2*i], data[2*i], w_2, w_1, a_r, delay[2*i]);
 	delay[2*i] = c_i;
 
 	w_1 = window[128+2*i];
 	w_2 = window[127-2*i];
-	data[128+2*i] = delay[127-2*i] * w_2 + a_i * w_1 + bias;
-	data[127-2*i] = delay[127-2*i] * w_1 - a_i * w_2 + bias;
+	BUTTERFLY_B (data[128+2*i], data[127-2*i], w_1, w_2, a_i, delay[127-2*i]);
 	delay[127-2*i] = c_r;
 
 	w_1 = window[2*i+1];
 	w_2 = window[254-2*i];
-	data[2*i+1]   = delay[2*i+1] * w_2 - b_i * w_1 + bias;
-	data[254-2*i] = delay[2*i+1] * w_1 + b_i * w_2 + bias;
+	BUTTERFLY_B (data[254-2*i], data[2*i+1], w_2, w_1, b_i, delay[2*i+1]);
 	delay[2*i+1] = d_r;
 
 	w_1 = window[129+2*i];
 	w_2 = window[126-2*i];
-	data[129+2*i] = delay[126-2*i] * w_2 + b_r * w_1 + bias;
-	data[126-2*i] = delay[126-2*i] * w_1 - b_r * w_2 + bias;
+	BUTTERFLY_B (data[129+2*i], data[126-2*i], w_1, w_2, b_r, delay[126-2*i]);
 	delay[126-2*i] = d_i;
     }
 }
@@ -358,66 +358,65 @@ void a52_imdct_init (uint32_t mm_accel)
 {
     int i, k;
     double sum;
+    double local_imdct_window[256];
 
     /* compute imdct window - kaiser-bessel derived window, alpha = 5.0 */
     sum = 0;
     for (i = 0; i < 256; i++) {
 	sum += besselI0 (i * (256 - i) * (5 * M_PI / 256) * (5 * M_PI / 256));
-	a52_imdct_window[i] = sum;
+	local_imdct_window[i] = sum;
     }
     sum++;
     for (i = 0; i < 256; i++)
-	a52_imdct_window[i] = sqrt (a52_imdct_window[i] / sum);
+	a52_imdct_window[i] = SAMPLE (sqrt (local_imdct_window[i] / sum));
 
     for (i = 0; i < 3; i++)
-	roots16[i] = cos ((M_PI / 8) * (i + 1));
+	roots16[i] = SAMPLE (cos ((M_PI / 8) * (i + 1)));
 
     for (i = 0; i < 7; i++)
-	roots32[i] = cos ((M_PI / 16) * (i + 1));
+	roots32[i] = SAMPLE (cos ((M_PI / 16) * (i + 1)));
 
     for (i = 0; i < 15; i++)
-	roots64[i] = cos ((M_PI / 32) * (i + 1));
+	roots64[i] = SAMPLE (cos ((M_PI / 32) * (i + 1)));
 
     for (i = 0; i < 31; i++)
-	roots128[i] = cos ((M_PI / 64) * (i + 1));
+	roots128[i] = SAMPLE (cos ((M_PI / 64) * (i + 1)));
 
     for (i = 0; i < 64; i++) {
 	k = fftorder[i] / 2 + 64;
-	pre1[i].real = cos ((M_PI / 256) * (k - 0.25));
-	pre1[i].imag = sin ((M_PI / 256) * (k - 0.25));
+	pre1[i].real = SAMPLE (cos ((M_PI / 256) * (k - 0.25)));
+	pre1[i].imag = SAMPLE (sin ((M_PI / 256) * (k - 0.25)));
     }
 
     for (i = 64; i < 128; i++) {
 	k = fftorder[i] / 2 + 64;
-	pre1[i].real = -cos ((M_PI / 256) * (k - 0.25));
-	pre1[i].imag = -sin ((M_PI / 256) * (k - 0.25));
+	pre1[i].real = SAMPLE (-cos ((M_PI / 256) * (k - 0.25)));
+	pre1[i].imag = SAMPLE (-sin ((M_PI / 256) * (k - 0.25)));
     }
 
     for (i = 0; i < 64; i++) {
-	post1[i].real = cos ((M_PI / 256) * (i + 0.5));
-	post1[i].imag = sin ((M_PI / 256) * (i + 0.5));
+	post1[i].real = SAMPLE (cos ((M_PI / 256) * (i + 0.5)));
+	post1[i].imag = SAMPLE (sin ((M_PI / 256) * (i + 0.5)));
     }
 
     for (i = 0; i < 64; i++) {
 	k = fftorder[i] / 4;
-	pre2[i].real = cos ((M_PI / 128) * (k - 0.25));
-	pre2[i].imag = sin ((M_PI / 128) * (k - 0.25));
+	pre2[i].real = SAMPLE (cos ((M_PI / 128) * (k - 0.25)));
+	pre2[i].imag = SAMPLE (sin ((M_PI / 128) * (k - 0.25)));
     }
 
     for (i = 0; i < 32; i++) {
-	post2[i].real = cos ((M_PI / 128) * (i + 0.5));
-	post2[i].imag = sin ((M_PI / 128) * (i + 0.5));
+	post2[i].real = SAMPLE (cos ((M_PI / 128) * (i + 0.5)));
+	post2[i].imag = SAMPLE (sin ((M_PI / 128) * (i + 0.5)));
     }
 
 #ifdef LIBA52_DJBFFT
     if (mm_accel & MM_ACCEL_DJBFFT) {
-	fprintf (stderr, "Using djbfft for IMDCT transform\n");
 	ifft128 = (void (*) (complex_t *)) fftc4_un128;
 	ifft64 = (void (*) (complex_t *)) fftc4_un64;
     } else
 #endif
     {
-	fprintf (stderr, "No accelerated IMDCT transform found\n");
 	ifft128 = ifft128_c;
 	ifft64 = ifft64_c;
     }

libavcodec/liba52/parse.c

@@ -1,6 +1,6 @@
 /*
  * parse.c
- * Copyright (C) 2000-2002 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
  * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
  *
  * This file is part of a52dec, a free ATSC A-52 stream decoder.
@@ -21,12 +21,18 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#include "config.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <inttypes.h>
+
 #include "a52.h"
 #include "a52_internal.h"
 #include "bitstream.h"
 #include "tables.h"
 
-#ifdef HAVE_MEMALIGN
+#if defined(HAVE_MEMALIGN) && !defined(__cplusplus)
 /* some systems have memalign() but no declaration for it */
 void * memalign (size_t align, size_t size);
 #else
@@ -35,13 +41,13 @@ void * memalign (size_t align, size_t size);
 #endif
 
 typedef struct {
-    sample_t q1[2];
-    sample_t q2[2];
-    sample_t q4;
+    quantizer_t q1[2];
+    quantizer_t q2[2];
+    quantizer_t q4;
     int q1_ptr;
     int q2_ptr;
     int q4_ptr;
-} quantizer_t;
+} quantizer_set_t;
 
 static uint8_t halfrate[12] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3};
 
@@ -50,11 +56,11 @@ a52_state_t * a52_init (uint32_t mm_accel)
     a52_state_t * state;
     int i;
 
-    state = malloc (sizeof (a52_state_t));
+    state = (a52_state_t *) malloc (sizeof (a52_state_t));
     if (state == NULL)
 	return NULL;
 
-    state->samples = memalign (16, 256 * 12 * sizeof (sample_t));
+    state->samples = (sample_t *) memalign (16, 256 * 12 * sizeof (sample_t));
     if (state->samples == NULL) {
 	free (state);
 	return NULL;
@@ -65,6 +71,8 @@ a52_state_t * a52_init (uint32_t mm_accel)
 
     state->downmixed = 1;
 
+    state->lfsr_state = 1;
+
     a52_imdct_init (mm_accel);
 
     return state;
@@ -121,10 +129,12 @@ int a52_syncinfo (uint8_t * buf, int * flags,
 }
 
 int a52_frame (a52_state_t * state, uint8_t * buf, int * flags,
-	       sample_t * level, sample_t bias)
+	       level_t * level, sample_t bias)
 {
-    static sample_t clev[4] = {LEVEL_3DB, LEVEL_45DB, LEVEL_6DB, LEVEL_45DB};
-    static sample_t slev[4] = {LEVEL_3DB, LEVEL_6DB, 0, LEVEL_6DB};
+    static level_t clev[4] = { LEVEL (LEVEL_3DB), LEVEL (LEVEL_45DB),
+			       LEVEL (LEVEL_6DB), LEVEL (LEVEL_45DB) };
+    static level_t slev[4] = { LEVEL (LEVEL_3DB), LEVEL (LEVEL_6DB), 
+			       0,                 LEVEL (LEVEL_6DB) };
     int chaninfo;
     int acmod;
 
@@ -132,19 +142,21 @@ int a52_frame (a52_state_t * state, uint8_t * buf, int * flags,
     state->halfrate = halfrate[buf[5] >> 3];
     state->acmod = acmod = buf[6] >> 5;
 
-    a52_bitstream_set_ptr (buf + 6);
-    bitstream_get (3);	/* skip acmod we already parsed */
+    a52_bitstream_set_ptr (state, buf + 6);
+    bitstream_get (state, 3);	/* skip acmod we already parsed */
 
-    if ((acmod == 2) && (bitstream_get (2) == 2))	/* dsurmod */
+    if ((acmod == 2) && (bitstream_get (state, 2) == 2))	/* dsurmod */
 	acmod = A52_DOLBY;
 
+    state->clev = state->slev = 0;
+
     if ((acmod & 1) && (acmod != 1))
-	state->clev = clev[bitstream_get (2)];	/* cmixlev */
+	state->clev = clev[bitstream_get (state, 2)];	/* cmixlev */
 
     if (acmod & 4)
-	state->slev = slev[bitstream_get (2)];	/* surmixlev */
+	state->slev = slev[bitstream_get (state, 2)];	/* surmixlev */
 
-    state->lfeon = bitstream_get (1);
+    state->lfeon = bitstream_get (state, 1);
 
     state->output = a52_downmix_init (acmod, *flags, level,
 				      state->clev, state->slev);
@@ -154,7 +166,7 @@ int a52_frame (a52_state_t * state, uint8_t * buf, int * flags,
 	state->output |= A52_LFE;
     *flags = state->output;
     /* the 2* compensates for differences in imdct */
-    state->dynrng = state->level = 2 * *level;
+    state->dynrng = state->level = MUL_C (*level, 2);
     state->bias = bias;
     state->dynrnge = 1;
     state->dynrngcall = NULL;
@@ -164,28 +176,28 @@ int a52_frame (a52_state_t * state, uint8_t * buf, int * flags,
 
     chaninfo = !acmod;
     do {
-	bitstream_get (5);	/* dialnorm */
-	if (bitstream_get (1))	/* compre */
-	    bitstream_get (8);	/* compr */
-	if (bitstream_get (1))	/* langcode */
-	    bitstream_get (8);	/* langcod */
-	if (bitstream_get (1))	/* audprodie */
-	    bitstream_get (7);	/* mixlevel + roomtyp */
+	bitstream_get (state, 5);	/* dialnorm */
+	if (bitstream_get (state, 1))	/* compre */
+	    bitstream_get (state, 8);	/* compr */
+	if (bitstream_get (state, 1))	/* langcode */
+	    bitstream_get (state, 8);	/* langcod */
+	if (bitstream_get (state, 1))	/* audprodie */
+	    bitstream_get (state, 7);	/* mixlevel + roomtyp */
     } while (chaninfo--);
 
-    bitstream_get (2);		/* copyrightb + origbs */
+    bitstream_get (state, 2);		/* copyrightb + origbs */
 
-    if (bitstream_get (1))	/* timecod1e */
-	bitstream_get (14);	/* timecod1 */
-    if (bitstream_get (1))	/* timecod2e */
-	bitstream_get (14);	/* timecod2 */
+    if (bitstream_get (state, 1))	/* timecod1e */
+	bitstream_get (state, 14);	/* timecod1 */
+    if (bitstream_get (state, 1))	/* timecod2e */
+	bitstream_get (state, 14);	/* timecod2 */
 
-    if (bitstream_get (1)) {	/* addbsie */
+    if (bitstream_get (state, 1)) {	/* addbsie */
 	int addbsil;
 
-	addbsil = bitstream_get (6);
+	addbsil = bitstream_get (state, 6);
 	do {
-	    bitstream_get (8);	/* addbsi */
+	    bitstream_get (state, 8);	/* addbsi */
 	} while (addbsil--);
     }
 
@@ -193,7 +205,7 @@ int a52_frame (a52_state_t * state, uint8_t * buf, int * flags,
 }
 
 void a52_dynrng (a52_state_t * state,
-		 sample_t (* call) (sample_t, void *), void * data)
+		 level_t (* call) (level_t, void *), void * data)
 {
     state->dynrnge = 0;
     if (call) {
@@ -203,13 +215,13 @@ void a52_dynrng (a52_state_t * state,
     }
 }
 
-static int parse_exponents (int expstr, int ngrps, uint8_t exponent,
-			    uint8_t * dest)
+static int parse_exponents (a52_state_t * state, int expstr, int ngrps,
+			    uint8_t exponent, uint8_t * dest)
 {
     int exps;
 
     while (ngrps--) {
-	exps = bitstream_get (7);
+	exps = bitstream_get (state, 7);
 
 	exponent += exp_1[exps];
 	if (exponent > 24)
@@ -257,18 +269,18 @@ static int parse_exponents (int expstr, int ngrps, uint8_t exponent,
     return 0;
 }
 
-static int parse_deltba (int8_t * deltba)
+static int parse_deltba (a52_state_t * state, int8_t * deltba)
 {
     int deltnseg, deltlen, delta, j;
 
     memset (deltba, 0, 50);
 
-    deltnseg = bitstream_get (3);
+    deltnseg = bitstream_get (state, 3);
     j = 0;
     do {
-	j += bitstream_get (5);
-	deltlen = bitstream_get (4);
-	delta = bitstream_get (3);
+	j += bitstream_get (state, 5);
+	deltlen = bitstream_get (state, 4);
+	delta = bitstream_get (state, 3);
 	delta -= (delta >= 4) ? 3 : 4;
 	if (!deltlen)
 	    continue;
@@ -295,29 +307,46 @@ static inline int zero_snr_offsets (int nfchans, a52_state_t * state)
     return 1;
 }
 
-static inline int16_t dither_gen (void)
+static inline int16_t dither_gen (a52_state_t * state)
 {
-    static uint16_t lfsr_state = 1;
-    int16_t state;
+    int16_t nstate;
 
-    state = dither_lut[lfsr_state >> 8] ^ (lfsr_state << 8);
+    nstate = dither_lut[state->lfsr_state >> 8] ^ (state->lfsr_state << 8);
 	
-    lfsr_state = (uint16_t) state;
+    state->lfsr_state = (uint16_t) nstate;
 
-    return state;
+    return (3 * nstate) >> 2;
 }
 
-static void coeff_get (sample_t * coeff, expbap_t * expbap,
-		       quantizer_t * quantizer, sample_t level,
-		       int dither, int end)
+#ifndef LIBA52_FIXED
+#define COEFF(c,t,l,s,e) (c) = (t) * (s)[e]
+#else
+#define COEFF(c,_t,_l,s,e) do {					\
+    quantizer_t t = (_t);					\
+    level_t l = (_l);						\
+    int shift = e - 5;						\
+    sample_t tmp = t * (l >> 16) + ((t * (l & 0xffff)) >> 16);	\
+    if (shift >= 0)						\
+	(c) = tmp >> shift;					\
+    else							\
+	(c) = tmp << -shift;					\
+} while (0)
+#endif
+
+static void coeff_get (a52_state_t * state, sample_t * coeff,
+		       expbap_t * expbap, quantizer_set_t * quant,
+		       level_t level, int dither, int end)
 {
     int i;
     uint8_t * exp;
     int8_t * bap;
+
+#ifndef LIBA52_FIXED
     sample_t factor[25];
 
     for (i = 0; i <= 24; i++)
 	factor[i] = scale_factor[i] * level;
+#endif
 
     exp = expbap->exp;
     bap = expbap->bap;
@@ -329,7 +358,7 @@ static void coeff_get (sample_t * coeff, expbap_t * expbap,
 	switch (bapi) {
 	case 0:
 	    if (dither) {
-		coeff[i] = dither_gen() * LEVEL_3DB * factor[exp[i]];
+		COEFF (coeff[i], dither_gen (state), level, factor, exp[i]);
 		continue;
 	    } else {
 		coeff[i] = 0;
@@ -337,76 +366,80 @@ static void coeff_get (sample_t * coeff, expbap_t * expbap,
 	    }
 
 	case -1:
-	    if (quantizer->q1_ptr >= 0) {
-		coeff[i] = quantizer->q1[quantizer->q1_ptr--] * factor[exp[i]];
+	    if (quant->q1_ptr >= 0) {
+		COEFF (coeff[i], quant->q1[quant->q1_ptr--], level,
+		       factor, exp[i]);
 		continue;
 	    } else {
 		int code;
 
-		code = bitstream_get (5);
+		code = bitstream_get (state, 5);
 
-		quantizer->q1_ptr = 1;
-		quantizer->q1[0] = q_1_2[code];
-		quantizer->q1[1] = q_1_1[code];
-		coeff[i] = q_1_0[code] * factor[exp[i]];
+		quant->q1_ptr = 1;
+		quant->q1[0] = q_1_2[code];
+		quant->q1[1] = q_1_1[code];
+		COEFF (coeff[i], q_1_0[code], level, factor, exp[i]);
 		continue;
 	    }
 
 	case -2:
-	    if (quantizer->q2_ptr >= 0) {
-		coeff[i] = quantizer->q2[quantizer->q2_ptr--] * factor[exp[i]];
+	    if (quant->q2_ptr >= 0) {
+		COEFF (coeff[i], quant->q2[quant->q2_ptr--], level,
+		       factor, exp[i]);
 		continue;
 	    } else {
 		int code;
 
-		code = bitstream_get (7);
+		code = bitstream_get (state, 7);
 
-		quantizer->q2_ptr = 1;
-		quantizer->q2[0] = q_2_2[code];
-		quantizer->q2[1] = q_2_1[code];
-		coeff[i] = q_2_0[code] * factor[exp[i]];
+		quant->q2_ptr = 1;
+		quant->q2[0] = q_2_2[code];
+		quant->q2[1] = q_2_1[code];
+		COEFF (coeff[i], q_2_0[code], level, factor, exp[i]);
 		continue;
 	    }
 
 	case 3:
-	    coeff[i] = q_3[bitstream_get (3)] * factor[exp[i]];
+	    COEFF (coeff[i], q_3[bitstream_get (state, 3)], level,
+		   factor, exp[i]);
 	    continue;
 
 	case -3:
-	    if (quantizer->q4_ptr == 0) {
-		quantizer->q4_ptr = -1;
-		coeff[i] = quantizer->q4 * factor[exp[i]];
+	    if (quant->q4_ptr == 0) {
+		quant->q4_ptr = -1;
+		COEFF (coeff[i], quant->q4, level, factor, exp[i]);
 		continue;
 	    } else {
 		int code;
 
-		code = bitstream_get (7);
+		code = bitstream_get (state, 7);
 
-		quantizer->q4_ptr = 0;
-		quantizer->q4 = q_4_1[code];
-		coeff[i] = q_4_0[code] * factor[exp[i]];
+		quant->q4_ptr = 0;
+		quant->q4 = q_4_1[code];
+		COEFF (coeff[i], q_4_0[code], level, factor, exp[i]);
 		continue;
 	    }
 
 	case 4:
-	    coeff[i] = q_5[bitstream_get (4)] * factor[exp[i]];
+	    COEFF (coeff[i], q_5[bitstream_get (state, 4)], level,
+		   factor, exp[i]);
 	    continue;
 
 	default:
-	    coeff[i] = ((bitstream_get_2 (bapi) << (16 - bapi)) *
-			  factor[exp[i]]);
+	    COEFF (coeff[i], bitstream_get_2 (state, bapi) << (16 - bapi),
+		   level, factor, exp[i]);
 	}
     }
 }
 
 static void coeff_get_coupling (a52_state_t * state, int nfchans,
-				sample_t * coeff, sample_t (* samples)[256],
-				quantizer_t * quantizer, uint8_t dithflag[5])
+				level_t * coeff, sample_t (* samples)[256],
+				quantizer_set_t * quant, uint8_t dithflag[5])
 {
     int cplbndstrc, bnd, i, i_end, ch;
     uint8_t * exp;
     int8_t * bap;
-    sample_t cplco[5];
+    level_t cplco[5];
 
     exp = state->cpl_expbap.exp;
     bap = state->cpl_expbap.bap;
@@ -421,22 +454,26 @@ static void coeff_get_coupling (a52_state_t * state, int nfchans,
 	}
 	cplbndstrc >>= 1;
 	for (ch = 0; ch < nfchans; ch++)
-	    cplco[ch] = state->cplco[ch][bnd] * coeff[ch];
+	    cplco[ch] = MUL_L (state->cplco[ch][bnd], coeff[ch]);
 	bnd++;
 
 	while (i < i_end) {
-	    sample_t cplcoeff;
+	    quantizer_t cplcoeff;
 	    int bapi;
 
 	    bapi = bap[i];
 	    switch (bapi) {
 	    case 0:
-		cplcoeff = LEVEL_3DB * scale_factor[exp[i]];
 		for (ch = 0; ch < nfchans; ch++)
 		    if ((state->chincpl >> ch) & 1) {
 			if (dithflag[ch])
-			    samples[ch][i] = (cplcoeff * cplco[ch] *
-					      dither_gen ());
+#ifndef LIBA52_FIXED
+			    samples[ch][i] = (scale_factor[exp[i]] *
+					      cplco[ch] * dither_gen (state));
+#else
+			    COEFF (samples[ch][i], dither_gen (state),
+				   cplco[ch], scale_factor, exp[i]);
+#endif
 			else
 			    samples[ch][i] = 0;
 		    }
@@ -444,69 +481,75 @@ static void coeff_get_coupling (a52_state_t * state, int nfchans,
 		continue;
 
 	    case -1:
-		if (quantizer->q1_ptr >= 0) {
-		    cplcoeff = quantizer->q1[quantizer->q1_ptr--];
+		if (quant->q1_ptr >= 0) {
+		    cplcoeff = quant->q1[quant->q1_ptr--];
 		    break;
 		} else {
 		    int code;
 
-		    code = bitstream_get (5);
+		    code = bitstream_get (state, 5);
 
-		    quantizer->q1_ptr = 1;
-		    quantizer->q1[0] = q_1_2[code];
-		    quantizer->q1[1] = q_1_1[code];
+		    quant->q1_ptr = 1;
+		    quant->q1[0] = q_1_2[code];
+		    quant->q1[1] = q_1_1[code];
 		    cplcoeff = q_1_0[code];
 		    break;
 		}
 
 	    case -2:
-		if (quantizer->q2_ptr >= 0) {
-		    cplcoeff = quantizer->q2[quantizer->q2_ptr--];
+		if (quant->q2_ptr >= 0) {
+		    cplcoeff = quant->q2[quant->q2_ptr--];
 		    break;
 		} else {
 		    int code;
 
-		    code = bitstream_get (7);
+		    code = bitstream_get (state, 7);
 
-		    quantizer->q2_ptr = 1;
-		    quantizer->q2[0] = q_2_2[code];
-		    quantizer->q2[1] = q_2_1[code];
+		    quant->q2_ptr = 1;
+		    quant->q2[0] = q_2_2[code];
+		    quant->q2[1] = q_2_1[code];
 		    cplcoeff = q_2_0[code];
 		    break;
 		}
 
 	    case 3:
-		cplcoeff = q_3[bitstream_get (3)];
+		cplcoeff = q_3[bitstream_get (state, 3)];
 		break;
 
 	    case -3:
-		if (quantizer->q4_ptr == 0) {
-		    quantizer->q4_ptr = -1;
-		    cplcoeff = quantizer->q4;
+		if (quant->q4_ptr == 0) {
+		    quant->q4_ptr = -1;
+		    cplcoeff = quant->q4;
 		    break;
 		} else {
 		    int code;
 
-		    code = bitstream_get (7);
+		    code = bitstream_get (state, 7);
 
-		    quantizer->q4_ptr = 0;
-		    quantizer->q4 = q_4_1[code];
+		    quant->q4_ptr = 0;
+		    quant->q4 = q_4_1[code];
 		    cplcoeff = q_4_0[code];
 		    break;
 		}
 
 	    case 4:
-		cplcoeff = q_5[bitstream_get (4)];
+		cplcoeff = q_5[bitstream_get (state, 4)];
 		break;
 
 	    default:
-		cplcoeff = bitstream_get_2 (bapi) << (16 - bapi);
+		cplcoeff = bitstream_get_2 (state, bapi) << (16 - bapi);
 	    }
-
+#ifndef LIBA52_FIXED
 	    cplcoeff *= scale_factor[exp[i]];
+#endif
 	    for (ch = 0; ch < nfchans; ch++)
-		if ((state->chincpl >> ch) & 1)
+	       if ((state->chincpl >> ch) & 1)
+#ifndef LIBA52_FIXED
 		    samples[ch][i] = cplcoeff * cplco[ch];
+#else
+		    COEFF (samples[ch][i], cplcoeff, cplco[ch],
+			   scale_factor, exp[i]);
+#endif
 	    i++;
 	}
     }
@@ -519,40 +562,44 @@ int a52_block (a52_state_t * state)
     int i, nfchans, chaninfo;
     uint8_t cplexpstr, chexpstr[5], lfeexpstr, do_bit_alloc, done_cpl;
     uint8_t blksw[5], dithflag[5];
-    sample_t coeff[5];
+    level_t coeff[5];
     int chanbias;
-    quantizer_t quantizer;
+    quantizer_set_t quant;
     sample_t * samples;
 
     nfchans = nfchans_tbl[state->acmod];
 
     for (i = 0; i < nfchans; i++)
-	blksw[i] = bitstream_get (1);
+	blksw[i] = bitstream_get (state, 1);
 
     for (i = 0; i < nfchans; i++)
-	dithflag[i] = bitstream_get (1);
+	dithflag[i] = bitstream_get (state, 1);
 
     chaninfo = !state->acmod;
     do {
-	if (bitstream_get (1)) {	/* dynrnge */
+	if (bitstream_get (state, 1)) {	/* dynrnge */
 	    int dynrng;
 
-	    dynrng = bitstream_get_2 (8);
+	    dynrng = bitstream_get_2 (state, 8);
 	    if (state->dynrnge) {
-		sample_t range;
+		level_t range;
 
+#if !defined(LIBA52_FIXED)
 		range = ((((dynrng & 0x1f) | 0x20) << 13) *
 			 scale_factor[3 - (dynrng >> 5)]);
+#else
+		range = ((dynrng & 0x1f) | 0x20) << (21 + (dynrng >> 5));
+#endif
 		if (state->dynrngcall)
 		    range = state->dynrngcall (range, state->dynrngdata);
-		state->dynrng = state->level * range;
+		state->dynrng = MUL_L (state->level, range);
 	    }
 	}
     } while (chaninfo--);
 
-    if (bitstream_get (1)) {	/* cplstre */
+    if (bitstream_get (state, 1)) {	/* cplstre */
 	state->chincpl = 0;
-	if (bitstream_get (1)) {	/* cplinu */
+	if (bitstream_get (state, 1)) {	/* cplinu */
 	    static uint8_t bndtab[16] = {31, 35, 37, 39, 41, 42, 43, 44,
 					 45, 45, 46, 46, 47, 47, 48, 48};
 	    int cplbegf;
@@ -560,15 +607,15 @@ int a52_block (a52_state_t * state)
 	    int ncplsubnd;
 
 	    for (i = 0; i < nfchans; i++)
-		state->chincpl |= bitstream_get (1) << i;
+		state->chincpl |= bitstream_get (state, 1) << i;
 	    switch (state->acmod) {
 	    case 0: case 1:
 		return 1;
 	    case 2:
-		state->phsflginu = bitstream_get (1);
+		state->phsflginu = bitstream_get (state, 1);
 	    }
-	    cplbegf = bitstream_get (4);
-	    cplendf = bitstream_get (4);
+	    cplbegf = bitstream_get (state, 4);
+	    cplendf = bitstream_get (state, 4);
 
 	    if (cplendf + 3 - cplbegf < 0)
 		return 1;
@@ -579,7 +626,7 @@ int a52_block (a52_state_t * state)
 
 	    state->cplbndstrc = 0;
 	    for (i = 0; i < ncplsubnd - 1; i++)
-		if (bitstream_get (1)) {
+		if (bitstream_get (state, 1)) {
 		    state->cplbndstrc |= 1 << i;
 		    state->ncplbnd--;
 		}
@@ -592,47 +639,52 @@ int a52_block (a52_state_t * state)
 	cplcoe = 0;
 	for (i = 0; i < nfchans; i++)
 	    if ((state->chincpl) >> i & 1)
-		if (bitstream_get (1)) {	/* cplcoe */
+		if (bitstream_get (state, 1)) {	/* cplcoe */
 		    int mstrcplco, cplcoexp, cplcomant;
 
 		    cplcoe = 1;
-		    mstrcplco = 3 * bitstream_get (2);
+		    mstrcplco = 3 * bitstream_get (state, 2);
 		    for (j = 0; j < state->ncplbnd; j++) {
-			cplcoexp = bitstream_get (4);
-			cplcomant = bitstream_get (4);
+			cplcoexp = bitstream_get (state, 4);
+			cplcomant = bitstream_get (state, 4);
 			if (cplcoexp == 15)
 			    cplcomant <<= 14;
 			else
 			    cplcomant = (cplcomant | 0x10) << 13;
+#ifndef LIBA52_FIXED
 			state->cplco[i][j] =
 			    cplcomant * scale_factor[cplcoexp + mstrcplco];
+#else
+			state->cplco[i][j] = (cplcomant << 11) >> (cplcoexp + mstrcplco);
+#endif
+
 		    }
 		}
 	if ((state->acmod == 2) && state->phsflginu && cplcoe)
 	    for (j = 0; j < state->ncplbnd; j++)
-		if (bitstream_get (1))	/* phsflg */
+		if (bitstream_get (state, 1))	/* phsflg */
 		    state->cplco[1][j] = -state->cplco[1][j];
     }
 
-    if ((state->acmod == 2) && (bitstream_get (1))) {	/* rematstr */
+    if ((state->acmod == 2) && (bitstream_get (state, 1))) {	/* rematstr */
 	int end;
 
 	state->rematflg = 0;
 	end = (state->chincpl) ? state->cplstrtmant : 253;	/* cplinu */
 	i = 0;
 	do
-	    state->rematflg |= bitstream_get (1) << i;
+	    state->rematflg |= bitstream_get (state, 1) << i;
 	while (rematrix_band[i++] < end);
     }
 
     cplexpstr = EXP_REUSE;
     lfeexpstr = EXP_REUSE;
     if (state->chincpl)	/* cplinu */
-	cplexpstr = bitstream_get (2);
+	cplexpstr = bitstream_get (state, 2);
     for (i = 0; i < nfchans; i++)
-	chexpstr[i] = bitstream_get (2);
+	chexpstr[i] = bitstream_get (state, 2);
     if (state->lfeon) 
-	lfeexpstr = bitstream_get (1);
+	lfeexpstr = bitstream_get (state, 1);
 
     for (i = 0; i < nfchans; i++)
 	if (chexpstr[i] != EXP_REUSE) {
@@ -641,7 +693,7 @@ int a52_block (a52_state_t * state)
 	    else {
 		int chbwcod;
 
-		chbwcod = bitstream_get (6);
+		chbwcod = bitstream_get (state, 6);
 		if (chbwcod > 60)
 		    return 1;
 		state->endmant[i] = chbwcod * 3 + 73;
@@ -656,8 +708,8 @@ int a52_block (a52_state_t * state)
 	do_bit_alloc = 64;
 	ncplgrps = ((state->cplendmant - state->cplstrtmant) /
 		    (3 << (cplexpstr - 1)));
-	cplabsexp = bitstream_get (4) << 1;
-	if (parse_exponents (cplexpstr, ncplgrps, cplabsexp,
+	cplabsexp = bitstream_get (state, 4) << 1;
+	if (parse_exponents (state, cplexpstr, ncplgrps, cplabsexp,
 			     state->cpl_expbap.exp + state->cplstrtmant))
 	    return 1;
     }
@@ -668,54 +720,54 @@ int a52_block (a52_state_t * state)
 	    do_bit_alloc |= 1 << i;
 	    grp_size = 3 << (chexpstr[i] - 1);
 	    nchgrps = (state->endmant[i] + grp_size - 4) / grp_size;
-	    state->fbw_expbap[i].exp[0] = bitstream_get (4);
-	    if (parse_exponents (chexpstr[i], nchgrps,
+	    state->fbw_expbap[i].exp[0] = bitstream_get (state, 4);
+	    if (parse_exponents (state, chexpstr[i], nchgrps,
 				 state->fbw_expbap[i].exp[0],
 				 state->fbw_expbap[i].exp + 1))
 		return 1;
-	    bitstream_get (2);	/* gainrng */
+	    bitstream_get (state, 2);	/* gainrng */
 	}
     if (lfeexpstr != EXP_REUSE) {
 	do_bit_alloc |= 32;
-	state->lfe_expbap.exp[0] = bitstream_get (4);
-	if (parse_exponents (lfeexpstr, 2, state->lfe_expbap.exp[0],
+	state->lfe_expbap.exp[0] = bitstream_get (state, 4);
+	if (parse_exponents (state, lfeexpstr, 2, state->lfe_expbap.exp[0],
 			     state->lfe_expbap.exp + 1))
 	    return 1;
     }
 
-    if (bitstream_get (1)) {	/* baie */
-	do_bit_alloc = -1;
-	state->bai = bitstream_get (11);
+    if (bitstream_get (state, 1)) {	/* baie */
+	do_bit_alloc = 127;
+	state->bai = bitstream_get (state, 11);
     }
-    if (bitstream_get (1)) {	/* snroffste */
-	do_bit_alloc = -1;
-	state->csnroffst = bitstream_get (6);
+    if (bitstream_get (state, 1)) {	/* snroffste */
+	do_bit_alloc = 127;
+	state->csnroffst = bitstream_get (state, 6);
 	if (state->chincpl)	/* cplinu */
-	    state->cplba.bai = bitstream_get (7);
+	    state->cplba.bai = bitstream_get (state, 7);
 	for (i = 0; i < nfchans; i++)
-	    state->ba[i].bai = bitstream_get (7);
+	    state->ba[i].bai = bitstream_get (state, 7);
 	if (state->lfeon)
-	    state->lfeba.bai = bitstream_get (7);
+	    state->lfeba.bai = bitstream_get (state, 7);
     }
-    if ((state->chincpl) && (bitstream_get (1))) {	/* cplinu, cplleake */
+    if ((state->chincpl) && (bitstream_get (state, 1))) { /* cplleake */
 	do_bit_alloc |= 64;
-	state->cplfleak = 9 - bitstream_get (3);
-	state->cplsleak = 9 - bitstream_get (3);
+	state->cplfleak = 9 - bitstream_get (state, 3);
+	state->cplsleak = 9 - bitstream_get (state, 3);
     }
 
-    if (bitstream_get (1)) {	/* deltbaie */
-	do_bit_alloc = -1;
+    if (bitstream_get (state, 1)) {	/* deltbaie */
+	do_bit_alloc = 127;
 	if (state->chincpl)	/* cplinu */
-	    state->cplba.deltbae = bitstream_get (2);
+	    state->cplba.deltbae = bitstream_get (state, 2);
 	for (i = 0; i < nfchans; i++)
-	    state->ba[i].deltbae = bitstream_get (2);
+	    state->ba[i].deltbae = bitstream_get (state, 2);
 	if (state->chincpl &&	/* cplinu */
 	    (state->cplba.deltbae == DELTA_BIT_NEW) &&
-	    parse_deltba (state->cplba.deltba))
+	    parse_deltba (state, state->cplba.deltba))
 	    return 1;
 	for (i = 0; i < nfchans; i++)
 	    if ((state->ba[i].deltbae == DELTA_BIT_NEW) &&
-		parse_deltba (state->ba[i].deltba))
+		parse_deltba (state, state->ba[i].deltba))
 		return 1;
     }
 
@@ -745,10 +797,10 @@ int a52_block (a52_state_t * state)
 	}
     }
 
-    if (bitstream_get (1)) {	/* skiple */
-	i = bitstream_get (9);	/* skipl */
+    if (bitstream_get (state, 1)) {	/* skiple */
+	i = bitstream_get (state, 9);	/* skipl */
 	while (i--)
-	    bitstream_get (8);
+	    bitstream_get (state, 8);
     }
 
     samples = state->samples;
@@ -758,20 +810,20 @@ int a52_block (a52_state_t * state)
     chanbias = a52_downmix_coeff (coeff, state->acmod, state->output,
 				  state->dynrng, state->clev, state->slev);
 
-    quantizer.q1_ptr = quantizer.q2_ptr = quantizer.q4_ptr = -1;
+    quant.q1_ptr = quant.q2_ptr = quant.q4_ptr = -1;
     done_cpl = 0;
 
     for (i = 0; i < nfchans; i++) {
 	int j;
 
-	coeff_get (samples + 256 * i, state->fbw_expbap +i, &quantizer,
+	coeff_get (state, samples + 256 * i, state->fbw_expbap +i, &quant,
 		   coeff[i], dithflag[i], state->endmant[i]);
 
 	if ((state->chincpl >> i) & 1) {
 	    if (!done_cpl) {
 		done_cpl = 1;
 		coeff_get_coupling (state, nfchans, coeff,
-				    (sample_t (*)[256])samples, &quantizer,
+				    (sample_t (*)[256])samples, &quant,
 				    dithflag);
 	    }
 	    j = state->cplendmant;
@@ -814,14 +866,14 @@ int a52_block (a52_state_t * state)
 
     if (state->lfeon) {
 	if (state->output & A52_LFE) {
-	    coeff_get (samples - 256, &state->lfe_expbap, &quantizer,
+	    coeff_get (state, samples - 256, &state->lfe_expbap, &quant,
 		       state->dynrng, 0, 7);
 	    for (i = 7; i < 256; i++)
 		(samples-256)[i] = 0;
 	    a52_imdct_512 (samples - 256, samples + 1536 - 256, state->bias);
 	} else {
 	    /* just skip the LFE coefficients */
-	    coeff_get (samples + 1280, &state->lfe_expbap, &quantizer,
+	    coeff_get (state, samples + 1280, &state->lfe_expbap, &quant,
 		       0, 0, 7);
 	}
     }

libavcodec/liba52/tables.h

@@ -1,6 +1,6 @@
 /*
  * tables.h
- * Copyright (C) 2000-2002 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
  * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
  *
  * This file is part of a52dec, a free ATSC A-52 stream decoder.
@@ -46,42 +46,44 @@ static const int8_t exp_3[128] = {
     25,25,25
 };
 
-#define Q0 ((-2 << 15) / 3.0)
-#define Q1 (0)
-#define Q2 ((2 << 15) / 3.0)
+#define Q(x) ROUND (32768.0 * x)
 
-static const sample_t q_1_0[32] = {
-    Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,
-    Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,
-    Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,
-    0,0,0,0,0
+#define Q0 Q (-2/3)
+#define Q1 Q (0)
+#define Q2 Q (2/3)
+
+static const quantizer_t q_1_0[32] = {
+    Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0,
+    Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1,
+    Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2,
+    0,  0,  0,  0,  0
 };
 
-static const sample_t q_1_1[32] = {
-    Q0,Q0,Q0,Q1,Q1,Q1,Q2,Q2,Q2,
-    Q0,Q0,Q0,Q1,Q1,Q1,Q2,Q2,Q2,
-    Q0,Q0,Q0,Q1,Q1,Q1,Q2,Q2,Q2,
-    0,0,0,0,0
+static const quantizer_t q_1_1[32] = {
+    Q0, Q0, Q0, Q1, Q1, Q1, Q2, Q2, Q2,
+    Q0, Q0, Q0, Q1, Q1, Q1, Q2, Q2, Q2,
+    Q0, Q0, Q0, Q1, Q1, Q1, Q2, Q2, Q2,
+    0,  0,  0,  0,  0
 };
 
-static const sample_t q_1_2[32] = {
-    Q0,Q1,Q2,Q0,Q1,Q2,Q0,Q1,Q2,
-    Q0,Q1,Q2,Q0,Q1,Q2,Q0,Q1,Q2,
-    Q0,Q1,Q2,Q0,Q1,Q2,Q0,Q1,Q2,
-    0,0,0,0,0
+static const quantizer_t q_1_2[32] = {
+    Q0, Q1, Q2, Q0, Q1, Q2, Q0, Q1, Q2,
+    Q0, Q1, Q2, Q0, Q1, Q2, Q0, Q1, Q2,
+    Q0, Q1, Q2, Q0, Q1, Q2, Q0, Q1, Q2,
+    0,  0,  0,  0,  0
 };
 
 #undef Q0
 #undef Q1
 #undef Q2
 
-#define Q0 ((-4 << 15) / 5.0)
-#define Q1 ((-2 << 15) / 5.0)
-#define Q2 (0)
-#define Q3 ((2 << 15) / 5.0)
-#define Q4 ((4 << 15) / 5.0)
+#define Q0 Q (-4/5)
+#define Q1 Q (-2/5)
+#define Q2 Q (0)
+#define Q3 Q (2/5)
+#define Q4 Q (4/5)
 
-static const sample_t q_2_0[128] = {
+static const quantizer_t q_2_0[128] = {
     Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,
     Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,
     Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,
@@ -90,7 +92,7 @@ static const sample_t q_2_0[128] = {
     0,0,0
 };
 
-static const sample_t q_2_1[128] = {
+static const quantizer_t q_2_1[128] = {
     Q0,Q0,Q0,Q0,Q0,Q1,Q1,Q1,Q1,Q1,Q2,Q2,Q2,Q2,Q2,Q3,Q3,Q3,Q3,Q3,Q4,Q4,Q4,Q4,Q4,
     Q0,Q0,Q0,Q0,Q0,Q1,Q1,Q1,Q1,Q1,Q2,Q2,Q2,Q2,Q2,Q3,Q3,Q3,Q3,Q3,Q4,Q4,Q4,Q4,Q4,
     Q0,Q0,Q0,Q0,Q0,Q1,Q1,Q1,Q1,Q1,Q2,Q2,Q2,Q2,Q2,Q3,Q3,Q3,Q3,Q3,Q4,Q4,Q4,Q4,Q4,
@@ -99,7 +101,7 @@ static const sample_t q_2_1[128] = {
     0,0,0
 };
 
-static const sample_t q_2_2[128] = {
+static const quantizer_t q_2_2[128] = {
     Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
     Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
     Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
@@ -114,24 +116,23 @@ static const sample_t q_2_2[128] = {
 #undef Q3
 #undef Q4
 
-static const sample_t q_3[8] = {
-    (-6 << 15)/7.0, (-4 << 15)/7.0, (-2 << 15)/7.0, 0,
-    ( 2 << 15)/7.0, ( 4 << 15)/7.0, ( 6 << 15)/7.0, 0
+static const quantizer_t q_3[8] = {
+    Q (-6/7), Q (-4/7), Q (-2/7), Q (0), Q (2/7), Q (4/7), Q (6/7), 0
 };
 
-#define Q0 ((-10 << 15) / 11.0)
-#define Q1 ((-8 << 15) / 11.0)
-#define Q2 ((-6 << 15) / 11.0)
-#define Q3 ((-4 << 15) / 11.0)
-#define Q4 ((-2 << 15) / 11.0)
-#define Q5 (0)
-#define Q6 ((2 << 15) / 11.0)
-#define Q7 ((4 << 15) / 11.0)
-#define Q8 ((6 << 15) / 11.0)
-#define Q9 ((8 << 15) / 11.0)
-#define QA ((10 << 15) / 11.0)
-
-static const sample_t q_4_0[128] = {
+#define Q0 Q (-10/11)
+#define Q1 Q (-8/11)
+#define Q2 Q (-6/11)
+#define Q3 Q (-4/11)
+#define Q4 Q (-2/11)
+#define Q5 Q (0)
+#define Q6 Q (2/11)
+#define Q7 Q (4/11)
+#define Q8 Q (6/11)
+#define Q9 Q (8/11)
+#define QA Q (10/11)
+
+static const quantizer_t q_4_0[128] = {
     Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0,
     Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1,
     Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2,
@@ -146,7 +147,7 @@ static const sample_t q_4_0[128] = {
     0,  0,  0,  0,  0,  0,  0
 };
 
-static const sample_t q_4_1[128] = {
+static const quantizer_t q_4_1[128] = {
     Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
     Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
     Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
@@ -173,15 +174,13 @@ static const sample_t q_4_1[128] = {
 #undef Q9
 #undef QA
 
-static const sample_t q_5[16] = {
-    (-14 << 15)/15.0,(-12 << 15)/15.0,(-10 << 15)/15.0,
-    ( -8 << 15)/15.0,( -6 << 15)/15.0,( -4 << 15)/15.0,
-    ( -2 << 15)/15.0,   0            ,(  2 << 15)/15.0,
-    (  4 << 15)/15.0,(  6 << 15)/15.0,(  8 << 15)/15.0,
-    ( 10 << 15)/15.0,( 12 << 15)/15.0,( 14 << 15)/15.0,
-    0
+static const quantizer_t q_5[16] = {
+    Q (-14/15), Q (-12/15), Q (-10/15), Q (-8/15), Q (-6/15),
+    Q (-4/15), Q (-2/15), Q (0), Q (2/15), Q (4/15),
+    Q (6/15), Q (8/15), Q (10/15), Q (12/15), Q (14/15), 0
 };
 
+#ifndef LIBA52_FIXED
 static const sample_t scale_factor[25] = {
     0.000030517578125,
     0.0000152587890625,
@@ -209,6 +208,7 @@ static const sample_t scale_factor[25] = {
     0.00000000000363797880709171295166015625,
     0.000000000001818989403545856475830078125
 };
+#endif
 
 static const uint16_t dither_lut[256] = {
     0x0000, 0xa011, 0xe033, 0x4022, 0x6077, 0xc066, 0x8044, 0x2055,