latest libac3 from walken

CVS patchset: 265
CVS date: 2001/07/10 21:50:31

1 files changed, 0 insertions, 163 deletions

diff --git a/src/libac3/decode.c b/src/libac3/decode.c
deleted file mode 100644
index c859525e8..000000000
--- a/src/libac3/decode.c
+++ /dev/null
@@ -1,163 +0,0 @@
-/* 
- *    decode.c
- *
- *	Copyright (C) Aaron Holtzman - May 1999
- *
- *  This file is part of ac3dec, a free Dolby AC-3 stream decoder.
- *	
- *  ac3dec 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, or (at your option)
- *  any later version.
- *   
- *  ac3dec 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 GNU Make; see the file COPYING.  If not, write to
- *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 
- *
- *
- */
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <errno.h>
-#include <string.h>
-#include <sys/time.h>
-#include <inttypes.h>
-#include "ac3.h"
-#include "ac3_internal.h"
-#include "bitstream.h"
-#include "imdct.h"
-#include "coeff.h"
-#include "bit_allocate.h"
-#include "parse.h"
-#include "stats.h"
-#include "rematrix.h"
-#include "sanity_check.h"
-#include "downmix.h"
-#include "debug.h"
-
-//our global config structure
-uint32_t error_flag = 0;
-
-static audblk_t audblk;
-static ac3_state_t state;
-static uint32_t frame_count = 0;
-static uint32_t done_banner;
-static ac3_frame_t frame;
-
-//the floating point samples for one audblk
-static stream_samples_t samples;
-
-//the integer samples for the entire frame (with enough space for 5 ch out)
-//if this size change, be sure to change the size when muting
-static int16_t s16_samples[5 * 6 * 256];
-
-void
-ac3_init(void)
-{
-    imdct_init();
-    sanity_check_init(&state,&audblk);
-
-    frame.audio_data = s16_samples;
-}
-
-int ac3_frame_length(uint8_t * buf)
-{
-    int dummy;
-
-    return parse_syncinfo (buf, &dummy, &dummy);
-}
-
-int ac3_sampling_rate(uint8_t * buf)
-{
-    int dummy, rate;
-
-    parse_syncinfo (buf, &rate, &dummy);
-    return rate;
-}
-
-ac3_frame_t*
-ac3_decode_frame(uint8_t * buf, int max_num_channels)
-{
-    uint32_t i;
-    int dummy;
-    int num_channels;
-
-    if (!parse_syncinfo (buf, &frame.sampling_rate, &dummy))
-	goto error;
-
-    dprintf("(decode) begin frame %d\n",frame_count++);
-
-    if (parse_bsi (&state, buf))
-	goto error;
-
-    switch (state.acmod) {
-    case 7 :
-    case 5 :
-    /* case 3 : FIXME : implement downmix functions*/
-      num_channels = (max_num_channels<5) ? max_num_channels : 5;
-      break;
-    case 4 :
-    case 6 :
-      num_channels = (max_num_channels<4) ? max_num_channels : 4;
-      break;
-    default:
-      num_channels = 2;
-    }
-
-    frame.num_channels = num_channels;
-
-    if (!done_banner) {
-	stats_print_banner (&state);
-	done_banner = 1;
-    }
-
-    for(i=0; i < 6; i++) {
-	//Initialize freq/time sample storage
-	memset(samples,0,sizeof(float) * 256 * (state.nfchans + state.lfeon));
-
-	// Extract most of the audblk info from the bitstream
-	// (minus the mantissas 
-	if (parse_audblk (&state, &audblk))
-	    goto error;
-
-	// Figure out how many bits per mantissa 
-	//bit_allocate(&state,&audblk);
-
-	// Extract the mantissas from the stream and
-	// generate floating point frequency coefficients
-	coeff_unpack(&state,&audblk,samples);
-	if(error_flag)
-	    goto error;
-
-	if(state.acmod == 0x2)
-	    rematrix(&audblk,samples);
-
-	// Convert the frequency samples into time samples 
-	imdct(&state,&audblk,samples);
-
-	// Downmix into the requested number of channels
-	// and convert floating point to int16_t
-	downmix(&state,samples,&s16_samples[i * num_channels * 256], 
-		num_channels);
-
-	sanity_check(&state,&audblk);
-	if(error_flag)
-	    goto error;
-    }
-
-
-    return &frame;	
-
-error:
-    //mute the frame
-    memset(s16_samples,0,sizeof(int16_t) * 256 * 2 * 6);
-
-    error_flag = 0;
-    return &frame;
-}