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/* |
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* Simple free lossless/lossy audio codec |
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* Copyright (c) 2004 Alex Beregszaszi |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "config_components.h" |
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#include "avcodec.h" |
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#include "codec_internal.h" |
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#include "encode.h" |
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#include "get_bits.h" |
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#include "golomb.h" |
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#include "internal.h" |
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#include "put_golomb.h" |
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#include "rangecoder.h" |
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/** |
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* @file |
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* Simple free lossless/lossy audio codec |
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* Based on Paul Francis Harrison's Bonk (http://www.logarithmic.net/pfh/bonk) |
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* Written and designed by Alex Beregszaszi |
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* |
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* TODO: |
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* - CABAC put/get_symbol |
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* - independent quantizer for channels |
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* - >2 channels support |
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* - more decorrelation types |
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* - more tap_quant tests |
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* - selectable intlist writers/readers (bonk-style, golomb, cabac) |
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*/ |
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#define MAX_CHANNELS 2 |
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#define MID_SIDE 0 |
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#define LEFT_SIDE 1 |
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#define RIGHT_SIDE 2 |
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typedef struct SonicContext { |
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int version; |
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int minor_version; |
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int lossless, decorrelation; |
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| 60 |
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int num_taps, downsampling; |
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double quantization; |
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int channels, samplerate, block_align, frame_size; |
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int *tap_quant; |
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int *int_samples; |
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int *coded_samples[MAX_CHANNELS]; |
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// for encoding |
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int *tail; |
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int tail_size; |
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int *window; |
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int window_size; |
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// for decoding |
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int *predictor_k; |
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int *predictor_state[MAX_CHANNELS]; |
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} SonicContext; |
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| 80 |
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#define LATTICE_SHIFT 10 |
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#define SAMPLE_SHIFT 4 |
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#define LATTICE_FACTOR (1 << LATTICE_SHIFT) |
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#define SAMPLE_FACTOR (1 << SAMPLE_SHIFT) |
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#define BASE_QUANT 0.6 |
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#define RATE_VARIATION 3.0 |
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✗ |
static inline int shift(int a,int b) |
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{ |
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✗ |
return (a+(1<<(b-1))) >> b; |
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} |
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static inline int shift_down(int a,int b) |
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{ |
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return (a>>b)+(a<0); |
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} |
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✗ |
static av_always_inline av_flatten void put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signed, uint64_t rc_stat[256][2], uint64_t rc_stat2[32][2]){ |
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int i; |
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#define put_rac(C,S,B) \ |
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do{\ |
| 103 |
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if(rc_stat){\ |
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rc_stat[*(S)][B]++;\ |
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rc_stat2[(S)-state][B]++;\ |
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}\ |
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put_rac(C,S,B);\ |
| 108 |
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}while(0) |
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✗ |
if(v){ |
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const int a= FFABS(v); |
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✗ |
const int e= av_log2(a); |
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✗ |
put_rac(c, state+0, 0); |
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if(e<=9){ |
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for(i=0; i<e; i++){ |
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put_rac(c, state+1+i, 1); //1..10 |
| 117 |
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} |
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put_rac(c, state+1+i, 0); |
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| 120 |
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for(i=e-1; i>=0; i--){ |
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put_rac(c, state+22+i, (a>>i)&1); //22..31 |
| 122 |
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} |
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if(is_signed) |
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put_rac(c, state+11 + e, v < 0); //11..21 |
| 126 |
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}else{ |
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for(i=0; i<e; i++){ |
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put_rac(c, state+1+FFMIN(i,9), 1); //1..10 |
| 129 |
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} |
| 130 |
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put_rac(c, state+1+9, 0); |
| 131 |
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| 132 |
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for(i=e-1; i>=0; i--){ |
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put_rac(c, state+22+FFMIN(i,9), (a>>i)&1); //22..31 |
| 134 |
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} |
| 135 |
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| 136 |
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if(is_signed) |
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put_rac(c, state+11 + 10, v < 0); //11..21 |
| 138 |
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} |
| 139 |
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}else{ |
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put_rac(c, state+0, 1); |
| 141 |
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} |
| 142 |
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#undef put_rac |
| 143 |
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} |
| 144 |
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static inline av_flatten int get_symbol(RangeCoder *c, uint8_t *state, int is_signed){ |
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✗ |
if(get_rac(c, state+0)) |
| 147 |
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return 0; |
| 148 |
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else{ |
| 149 |
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int i, e; |
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unsigned a; |
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e= 0; |
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while(get_rac(c, state+1 + FFMIN(e,9))){ //1..10 |
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e++; |
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if (e > 31) |
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return AVERROR_INVALIDDATA; |
| 156 |
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} |
| 157 |
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a= 1; |
| 159 |
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for(i=e-1; i>=0; i--){ |
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a += a + get_rac(c, state+22 + FFMIN(i,9)); //22..31 |
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} |
| 162 |
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e= -(is_signed && get_rac(c, state+11 + FFMIN(e, 10))); //11..21 |
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return (a^e)-e; |
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} |
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} |
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#if 1 |
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static inline int intlist_write(RangeCoder *c, uint8_t *state, int *buf, int entries, int base_2_part) |
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{ |
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int i; |
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for (i = 0; i < entries; i++) |
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put_symbol(c, state, buf[i], 1, NULL, NULL); |
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return 1; |
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} |
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static inline int intlist_read(RangeCoder *c, uint8_t *state, int *buf, int entries, int base_2_part) |
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{ |
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int i; |
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| 183 |
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for (i = 0; i < entries; i++) |
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buf[i] = get_symbol(c, state, 1); |
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return 1; |
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} |
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#elif 1 |
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static inline int intlist_write(PutBitContext *pb, int *buf, int entries, int base_2_part) |
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{ |
| 191 |
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int i; |
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for (i = 0; i < entries; i++) |
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set_se_golomb(pb, buf[i]); |
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| 196 |
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return 1; |
| 197 |
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} |
| 198 |
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| 199 |
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static inline int intlist_read(GetBitContext *gb, int *buf, int entries, int base_2_part) |
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{ |
| 201 |
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int i; |
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| 203 |
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for (i = 0; i < entries; i++) |
| 204 |
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buf[i] = get_se_golomb(gb); |
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| 206 |
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return 1; |
| 207 |
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} |
| 208 |
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| 209 |
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#else |
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| 211 |
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#define ADAPT_LEVEL 8 |
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| 213 |
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static int bits_to_store(uint64_t x) |
| 214 |
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{ |
| 215 |
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int res = 0; |
| 216 |
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| 217 |
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while(x) |
| 218 |
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{ |
| 219 |
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res++; |
| 220 |
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x >>= 1; |
| 221 |
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} |
| 222 |
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return res; |
| 223 |
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} |
| 224 |
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| 225 |
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static void write_uint_max(PutBitContext *pb, unsigned int value, unsigned int max) |
| 226 |
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{ |
| 227 |
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int i, bits; |
| 228 |
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| 229 |
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if (!max) |
| 230 |
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return; |
| 231 |
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| 232 |
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bits = bits_to_store(max); |
| 233 |
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| 234 |
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for (i = 0; i < bits-1; i++) |
| 235 |
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put_bits(pb, 1, value & (1 << i)); |
| 236 |
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| 237 |
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if ( (value | (1 << (bits-1))) <= max) |
| 238 |
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put_bits(pb, 1, value & (1 << (bits-1))); |
| 239 |
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} |
| 240 |
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| 241 |
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static unsigned int read_uint_max(GetBitContext *gb, int max) |
| 242 |
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{ |
| 243 |
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int i, bits, value = 0; |
| 244 |
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| 245 |
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if (!max) |
| 246 |
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return 0; |
| 247 |
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| 248 |
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bits = bits_to_store(max); |
| 249 |
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| 250 |
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for (i = 0; i < bits-1; i++) |
| 251 |
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if (get_bits1(gb)) |
| 252 |
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value += 1 << i; |
| 253 |
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| 254 |
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if ( (value | (1<<(bits-1))) <= max) |
| 255 |
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if (get_bits1(gb)) |
| 256 |
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value += 1 << (bits-1); |
| 257 |
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| 258 |
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return value; |
| 259 |
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} |
| 260 |
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| 261 |
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static int intlist_write(PutBitContext *pb, int *buf, int entries, int base_2_part) |
| 262 |
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{ |
| 263 |
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int i, j, x = 0, low_bits = 0, max = 0; |
| 264 |
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int step = 256, pos = 0, dominant = 0, any = 0; |
| 265 |
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int *copy, *bits; |
| 266 |
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| 267 |
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copy = av_calloc(entries, sizeof(*copy)); |
| 268 |
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if (!copy) |
| 269 |
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return AVERROR(ENOMEM); |
| 270 |
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| 271 |
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if (base_2_part) |
| 272 |
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{ |
| 273 |
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int energy = 0; |
| 274 |
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| 275 |
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for (i = 0; i < entries; i++) |
| 276 |
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energy += abs(buf[i]); |
| 277 |
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| 278 |
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low_bits = bits_to_store(energy / (entries * 2)); |
| 279 |
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if (low_bits > 15) |
| 280 |
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low_bits = 15; |
| 281 |
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| 282 |
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put_bits(pb, 4, low_bits); |
| 283 |
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} |
| 284 |
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| 285 |
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for (i = 0; i < entries; i++) |
| 286 |
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{ |
| 287 |
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put_bits(pb, low_bits, abs(buf[i])); |
| 288 |
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copy[i] = abs(buf[i]) >> low_bits; |
| 289 |
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if (copy[i] > max) |
| 290 |
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max = abs(copy[i]); |
| 291 |
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} |
| 292 |
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| 293 |
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bits = av_calloc(entries*max, sizeof(*bits)); |
| 294 |
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if (!bits) |
| 295 |
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{ |
| 296 |
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av_free(copy); |
| 297 |
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return AVERROR(ENOMEM); |
| 298 |
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} |
| 299 |
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| 300 |
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for (i = 0; i <= max; i++) |
| 301 |
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{ |
| 302 |
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for (j = 0; j < entries; j++) |
| 303 |
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if (copy[j] >= i) |
| 304 |
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bits[x++] = copy[j] > i; |
| 305 |
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} |
| 306 |
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| 307 |
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// store bitstream |
| 308 |
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while (pos < x) |
| 309 |
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{ |
| 310 |
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int steplet = step >> 8; |
| 311 |
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| 312 |
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if (pos + steplet > x) |
| 313 |
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steplet = x - pos; |
| 314 |
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| 315 |
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for (i = 0; i < steplet; i++) |
| 316 |
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if (bits[i+pos] != dominant) |
| 317 |
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any = 1; |
| 318 |
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| 319 |
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put_bits(pb, 1, any); |
| 320 |
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| 321 |
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if (!any) |
| 322 |
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{ |
| 323 |
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pos += steplet; |
| 324 |
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step += step / ADAPT_LEVEL; |
| 325 |
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} |
| 326 |
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else |
| 327 |
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{ |
| 328 |
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int interloper = 0; |
| 329 |
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| 330 |
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while (((pos + interloper) < x) && (bits[pos + interloper] == dominant)) |
| 331 |
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interloper++; |
| 332 |
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| 333 |
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// note change |
| 334 |
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write_uint_max(pb, interloper, (step >> 8) - 1); |
| 335 |
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| 336 |
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pos += interloper + 1; |
| 337 |
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step -= step / ADAPT_LEVEL; |
| 338 |
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} |
| 339 |
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| 340 |
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if (step < 256) |
| 341 |
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{ |
| 342 |
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step = 65536 / step; |
| 343 |
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dominant = !dominant; |
| 344 |
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} |
| 345 |
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} |
| 346 |
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| 347 |
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// store signs |
| 348 |
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for (i = 0; i < entries; i++) |
| 349 |
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if (buf[i]) |
| 350 |
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put_bits(pb, 1, buf[i] < 0); |
| 351 |
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| 352 |
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av_free(bits); |
| 353 |
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av_free(copy); |
| 354 |
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| 355 |
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return 0; |
| 356 |
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} |
| 357 |
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|
| 358 |
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static int intlist_read(GetBitContext *gb, int *buf, int entries, int base_2_part) |
| 359 |
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{ |
| 360 |
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int i, low_bits = 0, x = 0; |
| 361 |
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int n_zeros = 0, step = 256, dominant = 0; |
| 362 |
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int pos = 0, level = 0; |
| 363 |
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int *bits = av_calloc(entries, sizeof(*bits)); |
| 364 |
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| 365 |
|
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if (!bits) |
| 366 |
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return AVERROR(ENOMEM); |
| 367 |
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|
| 368 |
|
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if (base_2_part) |
| 369 |
|
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{ |
| 370 |
|
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low_bits = get_bits(gb, 4); |
| 371 |
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|
| 372 |
|
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if (low_bits) |
| 373 |
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for (i = 0; i < entries; i++) |
| 374 |
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buf[i] = get_bits(gb, low_bits); |
| 375 |
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} |
| 376 |
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| 377 |
|
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// av_log(NULL, AV_LOG_INFO, "entries: %d, low bits: %d\n", entries, low_bits); |
| 378 |
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|
| 379 |
|
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while (n_zeros < entries) |
| 380 |
|
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{ |
| 381 |
|
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int steplet = step >> 8; |
| 382 |
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|
| 383 |
|
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if (!get_bits1(gb)) |
| 384 |
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{ |
| 385 |
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for (i = 0; i < steplet; i++) |
| 386 |
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bits[x++] = dominant; |
| 387 |
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|
| 388 |
|
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if (!dominant) |
| 389 |
|
|
n_zeros += steplet; |
| 390 |
|
|
|
| 391 |
|
|
step += step / ADAPT_LEVEL; |
| 392 |
|
|
} |
| 393 |
|
|
else |
| 394 |
|
|
{ |
| 395 |
|
|
int actual_run = read_uint_max(gb, steplet-1); |
| 396 |
|
|
|
| 397 |
|
|
// av_log(NULL, AV_LOG_INFO, "actual run: %d\n", actual_run); |
| 398 |
|
|
|
| 399 |
|
|
for (i = 0; i < actual_run; i++) |
| 400 |
|
|
bits[x++] = dominant; |
| 401 |
|
|
|
| 402 |
|
|
bits[x++] = !dominant; |
| 403 |
|
|
|
| 404 |
|
|
if (!dominant) |
| 405 |
|
|
n_zeros += actual_run; |
| 406 |
|
|
else |
| 407 |
|
|
n_zeros++; |
| 408 |
|
|
|
| 409 |
|
|
step -= step / ADAPT_LEVEL; |
| 410 |
|
|
} |
| 411 |
|
|
|
| 412 |
|
|
if (step < 256) |
| 413 |
|
|
{ |
| 414 |
|
|
step = 65536 / step; |
| 415 |
|
|
dominant = !dominant; |
| 416 |
|
|
} |
| 417 |
|
|
} |
| 418 |
|
|
|
| 419 |
|
|
// reconstruct unsigned values |
| 420 |
|
|
n_zeros = 0; |
| 421 |
|
|
for (i = 0; n_zeros < entries; i++) |
| 422 |
|
|
{ |
| 423 |
|
|
while(1) |
| 424 |
|
|
{ |
| 425 |
|
|
if (pos >= entries) |
| 426 |
|
|
{ |
| 427 |
|
|
pos = 0; |
| 428 |
|
|
level += 1 << low_bits; |
| 429 |
|
|
} |
| 430 |
|
|
|
| 431 |
|
|
if (buf[pos] >= level) |
| 432 |
|
|
break; |
| 433 |
|
|
|
| 434 |
|
|
pos++; |
| 435 |
|
|
} |
| 436 |
|
|
|
| 437 |
|
|
if (bits[i]) |
| 438 |
|
|
buf[pos] += 1 << low_bits; |
| 439 |
|
|
else |
| 440 |
|
|
n_zeros++; |
| 441 |
|
|
|
| 442 |
|
|
pos++; |
| 443 |
|
|
} |
| 444 |
|
|
av_free(bits); |
| 445 |
|
|
|
| 446 |
|
|
// read signs |
| 447 |
|
|
for (i = 0; i < entries; i++) |
| 448 |
|
|
if (buf[i] && get_bits1(gb)) |
| 449 |
|
|
buf[i] = -buf[i]; |
| 450 |
|
|
|
| 451 |
|
|
// av_log(NULL, AV_LOG_INFO, "zeros: %d pos: %d\n", n_zeros, pos); |
| 452 |
|
|
|
| 453 |
|
|
return 0; |
| 454 |
|
|
} |
| 455 |
|
|
#endif |
| 456 |
|
|
|
| 457 |
|
✗ |
static void predictor_init_state(int *k, int *state, int order) |
| 458 |
|
|
{ |
| 459 |
|
|
int i; |
| 460 |
|
|
|
| 461 |
|
✗ |
for (i = order-2; i >= 0; i--) |
| 462 |
|
|
{ |
| 463 |
|
✗ |
int j, p, x = state[i]; |
| 464 |
|
|
|
| 465 |
|
✗ |
for (j = 0, p = i+1; p < order; j++,p++) |
| 466 |
|
|
{ |
| 467 |
|
✗ |
int tmp = x + shift_down(k[j] * (unsigned)state[p], LATTICE_SHIFT); |
| 468 |
|
✗ |
state[p] += shift_down(k[j]* (unsigned)x, LATTICE_SHIFT); |
| 469 |
|
✗ |
x = tmp; |
| 470 |
|
|
} |
| 471 |
|
|
} |
| 472 |
|
|
} |
| 473 |
|
|
|
| 474 |
|
✗ |
static int predictor_calc_error(int *k, int *state, int order, int error) |
| 475 |
|
|
{ |
| 476 |
|
✗ |
int i, x = error - shift_down(k[order-1] * (unsigned)state[order-1], LATTICE_SHIFT); |
| 477 |
|
|
|
| 478 |
|
|
#if 1 |
| 479 |
|
✗ |
int *k_ptr = &(k[order-2]), |
| 480 |
|
✗ |
*state_ptr = &(state[order-2]); |
| 481 |
|
✗ |
for (i = order-2; i >= 0; i--, k_ptr--, state_ptr--) |
| 482 |
|
|
{ |
| 483 |
|
✗ |
int k_value = *k_ptr, state_value = *state_ptr; |
| 484 |
|
✗ |
x -= (unsigned)shift_down(k_value * (unsigned)state_value, LATTICE_SHIFT); |
| 485 |
|
✗ |
state_ptr[1] = state_value + shift_down(k_value * (unsigned)x, LATTICE_SHIFT); |
| 486 |
|
|
} |
| 487 |
|
|
#else |
| 488 |
|
|
for (i = order-2; i >= 0; i--) |
| 489 |
|
|
{ |
| 490 |
|
|
x -= (unsigned)shift_down(k[i] * state[i], LATTICE_SHIFT); |
| 491 |
|
|
state[i+1] = state[i] + shift_down(k[i] * x, LATTICE_SHIFT); |
| 492 |
|
|
} |
| 493 |
|
|
#endif |
| 494 |
|
|
|
| 495 |
|
|
// don't drift too far, to avoid overflows |
| 496 |
|
✗ |
if (x > (SAMPLE_FACTOR<<16)) x = (SAMPLE_FACTOR<<16); |
| 497 |
|
✗ |
if (x < -(SAMPLE_FACTOR<<16)) x = -(SAMPLE_FACTOR<<16); |
| 498 |
|
|
|
| 499 |
|
✗ |
state[0] = x; |
| 500 |
|
|
|
| 501 |
|
✗ |
return x; |
| 502 |
|
|
} |
| 503 |
|
|
|
| 504 |
|
|
#if CONFIG_SONIC_ENCODER || CONFIG_SONIC_LS_ENCODER |
| 505 |
|
|
// Heavily modified Levinson-Durbin algorithm which |
| 506 |
|
|
// copes better with quantization, and calculates the |
| 507 |
|
|
// actual whitened result as it goes. |
| 508 |
|
|
|
| 509 |
|
✗ |
static void modified_levinson_durbin(int *window, int window_entries, |
| 510 |
|
|
int *out, int out_entries, int channels, int *tap_quant) |
| 511 |
|
|
{ |
| 512 |
|
|
int i; |
| 513 |
|
✗ |
int *state = window + window_entries; |
| 514 |
|
|
|
| 515 |
|
✗ |
memcpy(state, window, window_entries * sizeof(*state)); |
| 516 |
|
|
|
| 517 |
|
✗ |
for (i = 0; i < out_entries; i++) |
| 518 |
|
|
{ |
| 519 |
|
✗ |
int step = (i+1)*channels, k, j; |
| 520 |
|
✗ |
double xx = 0.0, xy = 0.0; |
| 521 |
|
|
#if 1 |
| 522 |
|
✗ |
int *x_ptr = &(window[step]); |
| 523 |
|
✗ |
int *state_ptr = &(state[0]); |
| 524 |
|
✗ |
j = window_entries - step; |
| 525 |
|
✗ |
for (;j>0;j--,x_ptr++,state_ptr++) |
| 526 |
|
|
{ |
| 527 |
|
✗ |
double x_value = *x_ptr; |
| 528 |
|
✗ |
double state_value = *state_ptr; |
| 529 |
|
✗ |
xx += state_value*state_value; |
| 530 |
|
✗ |
xy += x_value*state_value; |
| 531 |
|
|
} |
| 532 |
|
|
#else |
| 533 |
|
|
for (j = 0; j <= (window_entries - step); j++); |
| 534 |
|
|
{ |
| 535 |
|
|
double stepval = window[step+j]; |
| 536 |
|
|
double stateval = window[j]; |
| 537 |
|
|
// xx += (double)window[j]*(double)window[j]; |
| 538 |
|
|
// xy += (double)window[step+j]*(double)window[j]; |
| 539 |
|
|
xx += stateval*stateval; |
| 540 |
|
|
xy += stepval*stateval; |
| 541 |
|
|
} |
| 542 |
|
|
#endif |
| 543 |
|
✗ |
if (xx == 0.0) |
| 544 |
|
✗ |
k = 0; |
| 545 |
|
|
else |
| 546 |
|
✗ |
k = (int)(floor(-xy/xx * (double)LATTICE_FACTOR / (double)(tap_quant[i]) + 0.5)); |
| 547 |
|
|
|
| 548 |
|
✗ |
if (k > (LATTICE_FACTOR/tap_quant[i])) |
| 549 |
|
✗ |
k = LATTICE_FACTOR/tap_quant[i]; |
| 550 |
|
✗ |
if (-k > (LATTICE_FACTOR/tap_quant[i])) |
| 551 |
|
✗ |
k = -(LATTICE_FACTOR/tap_quant[i]); |
| 552 |
|
|
|
| 553 |
|
✗ |
out[i] = k; |
| 554 |
|
✗ |
k *= tap_quant[i]; |
| 555 |
|
|
|
| 556 |
|
|
#if 1 |
| 557 |
|
✗ |
x_ptr = &(window[step]); |
| 558 |
|
✗ |
state_ptr = &(state[0]); |
| 559 |
|
✗ |
j = window_entries - step; |
| 560 |
|
✗ |
for (;j>0;j--,x_ptr++,state_ptr++) |
| 561 |
|
|
{ |
| 562 |
|
✗ |
int x_value = *x_ptr; |
| 563 |
|
✗ |
int state_value = *state_ptr; |
| 564 |
|
✗ |
*x_ptr = x_value + shift_down(k*state_value,LATTICE_SHIFT); |
| 565 |
|
✗ |
*state_ptr = state_value + shift_down(k*x_value, LATTICE_SHIFT); |
| 566 |
|
|
} |
| 567 |
|
|
#else |
| 568 |
|
|
for (j=0; j <= (window_entries - step); j++) |
| 569 |
|
|
{ |
| 570 |
|
|
int stepval = window[step+j]; |
| 571 |
|
|
int stateval=state[j]; |
| 572 |
|
|
window[step+j] += shift_down(k * stateval, LATTICE_SHIFT); |
| 573 |
|
|
state[j] += shift_down(k * stepval, LATTICE_SHIFT); |
| 574 |
|
|
} |
| 575 |
|
|
#endif |
| 576 |
|
|
} |
| 577 |
|
|
} |
| 578 |
|
|
|
| 579 |
|
✗ |
static inline int code_samplerate(int samplerate) |
| 580 |
|
|
{ |
| 581 |
|
✗ |
switch (samplerate) |
| 582 |
|
|
{ |
| 583 |
|
✗ |
case 44100: return 0; |
| 584 |
|
✗ |
case 22050: return 1; |
| 585 |
|
✗ |
case 11025: return 2; |
| 586 |
|
✗ |
case 96000: return 3; |
| 587 |
|
✗ |
case 48000: return 4; |
| 588 |
|
✗ |
case 32000: return 5; |
| 589 |
|
✗ |
case 24000: return 6; |
| 590 |
|
✗ |
case 16000: return 7; |
| 591 |
|
✗ |
case 8000: return 8; |
| 592 |
|
|
} |
| 593 |
|
✗ |
return AVERROR(EINVAL); |
| 594 |
|
|
} |
| 595 |
|
|
|
| 596 |
|
✗ |
static av_cold int sonic_encode_init(AVCodecContext *avctx) |
| 597 |
|
|
{ |
| 598 |
|
✗ |
SonicContext *s = avctx->priv_data; |
| 599 |
|
|
int *coded_samples; |
| 600 |
|
|
PutBitContext pb; |
| 601 |
|
|
int i; |
| 602 |
|
|
|
| 603 |
|
✗ |
s->version = 2; |
| 604 |
|
|
|
| 605 |
|
✗ |
if (avctx->ch_layout.nb_channels > MAX_CHANNELS) |
| 606 |
|
|
{ |
| 607 |
|
✗ |
av_log(avctx, AV_LOG_ERROR, "Only mono and stereo streams are supported by now\n"); |
| 608 |
|
✗ |
return AVERROR(EINVAL); /* only stereo or mono for now */ |
| 609 |
|
|
} |
| 610 |
|
|
|
| 611 |
|
✗ |
if (avctx->ch_layout.nb_channels == 2) |
| 612 |
|
✗ |
s->decorrelation = MID_SIDE; |
| 613 |
|
|
else |
| 614 |
|
✗ |
s->decorrelation = 3; |
| 615 |
|
|
|
| 616 |
|
✗ |
if (avctx->codec->id == AV_CODEC_ID_SONIC_LS) |
| 617 |
|
|
{ |
| 618 |
|
✗ |
s->lossless = 1; |
| 619 |
|
✗ |
s->num_taps = 32; |
| 620 |
|
✗ |
s->downsampling = 1; |
| 621 |
|
✗ |
s->quantization = 0.0; |
| 622 |
|
|
} |
| 623 |
|
|
else |
| 624 |
|
|
{ |
| 625 |
|
✗ |
s->num_taps = 128; |
| 626 |
|
✗ |
s->downsampling = 2; |
| 627 |
|
✗ |
s->quantization = 1.0; |
| 628 |
|
|
} |
| 629 |
|
|
|
| 630 |
|
|
// max tap 2048 |
| 631 |
|
✗ |
if (s->num_taps < 32 || s->num_taps > 1024 || s->num_taps % 32) { |
| 632 |
|
✗ |
av_log(avctx, AV_LOG_ERROR, "Invalid number of taps\n"); |
| 633 |
|
✗ |
return AVERROR_INVALIDDATA; |
| 634 |
|
|
} |
| 635 |
|
|
|
| 636 |
|
|
// generate taps |
| 637 |
|
✗ |
s->tap_quant = av_calloc(s->num_taps, sizeof(*s->tap_quant)); |
| 638 |
|
✗ |
if (!s->tap_quant) |
| 639 |
|
✗ |
return AVERROR(ENOMEM); |
| 640 |
|
|
|
| 641 |
|
✗ |
for (i = 0; i < s->num_taps; i++) |
| 642 |
|
✗ |
s->tap_quant[i] = ff_sqrt(i+1); |
| 643 |
|
|
|
| 644 |
|
✗ |
s->channels = avctx->ch_layout.nb_channels; |
| 645 |
|
✗ |
s->samplerate = avctx->sample_rate; |
| 646 |
|
|
|
| 647 |
|
✗ |
s->block_align = 2048LL*s->samplerate/(44100*s->downsampling); |
| 648 |
|
✗ |
s->frame_size = s->channels*s->block_align*s->downsampling; |
| 649 |
|
|
|
| 650 |
|
✗ |
s->tail_size = s->num_taps*s->channels; |
| 651 |
|
✗ |
s->tail = av_calloc(s->tail_size, sizeof(*s->tail)); |
| 652 |
|
✗ |
if (!s->tail) |
| 653 |
|
✗ |
return AVERROR(ENOMEM); |
| 654 |
|
|
|
| 655 |
|
✗ |
s->predictor_k = av_calloc(s->num_taps, sizeof(*s->predictor_k) ); |
| 656 |
|
✗ |
if (!s->predictor_k) |
| 657 |
|
✗ |
return AVERROR(ENOMEM); |
| 658 |
|
|
|
| 659 |
|
✗ |
coded_samples = av_calloc(s->block_align, s->channels * sizeof(**s->coded_samples)); |
| 660 |
|
✗ |
if (!coded_samples) |
| 661 |
|
✗ |
return AVERROR(ENOMEM); |
| 662 |
|
✗ |
for (i = 0; i < s->channels; i++, coded_samples += s->block_align) |
| 663 |
|
✗ |
s->coded_samples[i] = coded_samples; |
| 664 |
|
|
|
| 665 |
|
✗ |
s->int_samples = av_calloc(s->frame_size, sizeof(*s->int_samples)); |
| 666 |
|
|
|
| 667 |
|
✗ |
s->window_size = ((2*s->tail_size)+s->frame_size); |
| 668 |
|
✗ |
s->window = av_calloc(s->window_size, 2 * sizeof(*s->window)); |
| 669 |
|
✗ |
if (!s->window || !s->int_samples) |
| 670 |
|
✗ |
return AVERROR(ENOMEM); |
| 671 |
|
|
|
| 672 |
|
✗ |
avctx->extradata = av_mallocz(16); |
| 673 |
|
✗ |
if (!avctx->extradata) |
| 674 |
|
✗ |
return AVERROR(ENOMEM); |
| 675 |
|
✗ |
init_put_bits(&pb, avctx->extradata, 16*8); |
| 676 |
|
|
|
| 677 |
|
✗ |
put_bits(&pb, 2, s->version); // version |
| 678 |
|
✗ |
if (s->version >= 1) |
| 679 |
|
|
{ |
| 680 |
|
✗ |
if (s->version >= 2) { |
| 681 |
|
✗ |
put_bits(&pb, 8, s->version); |
| 682 |
|
✗ |
put_bits(&pb, 8, s->minor_version); |
| 683 |
|
|
} |
| 684 |
|
✗ |
put_bits(&pb, 2, s->channels); |
| 685 |
|
✗ |
put_bits(&pb, 4, code_samplerate(s->samplerate)); |
| 686 |
|
|
} |
| 687 |
|
✗ |
put_bits(&pb, 1, s->lossless); |
| 688 |
|
✗ |
if (!s->lossless) |
| 689 |
|
✗ |
put_bits(&pb, 3, SAMPLE_SHIFT); // XXX FIXME: sample precision |
| 690 |
|
✗ |
put_bits(&pb, 2, s->decorrelation); |
| 691 |
|
✗ |
put_bits(&pb, 2, s->downsampling); |
| 692 |
|
✗ |
put_bits(&pb, 5, (s->num_taps >> 5)-1); // 32..1024 |
| 693 |
|
✗ |
put_bits(&pb, 1, 0); // XXX FIXME: no custom tap quant table |
| 694 |
|
|
|
| 695 |
|
✗ |
flush_put_bits(&pb); |
| 696 |
|
✗ |
avctx->extradata_size = put_bytes_output(&pb); |
| 697 |
|
|
|
| 698 |
|
✗ |
av_log(avctx, AV_LOG_INFO, "Sonic: ver: %d.%d ls: %d dr: %d taps: %d block: %d frame: %d downsamp: %d\n", |
| 699 |
|
|
s->version, s->minor_version, s->lossless, s->decorrelation, s->num_taps, s->block_align, s->frame_size, s->downsampling); |
| 700 |
|
|
|
| 701 |
|
✗ |
avctx->frame_size = s->block_align*s->downsampling; |
| 702 |
|
|
|
| 703 |
|
✗ |
return 0; |
| 704 |
|
|
} |
| 705 |
|
|
|
| 706 |
|
✗ |
static av_cold int sonic_encode_close(AVCodecContext *avctx) |
| 707 |
|
|
{ |
| 708 |
|
✗ |
SonicContext *s = avctx->priv_data; |
| 709 |
|
|
|
| 710 |
|
✗ |
av_freep(&s->coded_samples[0]); |
| 711 |
|
✗ |
av_freep(&s->predictor_k); |
| 712 |
|
✗ |
av_freep(&s->tail); |
| 713 |
|
✗ |
av_freep(&s->tap_quant); |
| 714 |
|
✗ |
av_freep(&s->window); |
| 715 |
|
✗ |
av_freep(&s->int_samples); |
| 716 |
|
|
|
| 717 |
|
✗ |
return 0; |
| 718 |
|
|
} |
| 719 |
|
|
|
| 720 |
|
✗ |
static int sonic_encode_frame(AVCodecContext *avctx, AVPacket *avpkt, |
| 721 |
|
|
const AVFrame *frame, int *got_packet_ptr) |
| 722 |
|
|
{ |
| 723 |
|
✗ |
SonicContext *s = avctx->priv_data; |
| 724 |
|
|
RangeCoder c; |
| 725 |
|
✗ |
int i, j, ch, quant = 0, x = 0; |
| 726 |
|
|
int ret; |
| 727 |
|
✗ |
const short *samples = (const int16_t*)frame->data[0]; |
| 728 |
|
|
uint8_t state[32]; |
| 729 |
|
|
|
| 730 |
|
✗ |
if ((ret = ff_alloc_packet(avctx, avpkt, s->frame_size * 5 + 1000)) < 0) |
| 731 |
|
✗ |
return ret; |
| 732 |
|
|
|
| 733 |
|
✗ |
ff_init_range_encoder(&c, avpkt->data, avpkt->size); |
| 734 |
|
✗ |
ff_build_rac_states(&c, 0.05*(1LL<<32), 256-8); |
| 735 |
|
✗ |
memset(state, 128, sizeof(state)); |
| 736 |
|
|
|
| 737 |
|
|
// short -> internal |
| 738 |
|
✗ |
for (i = 0; i < s->frame_size; i++) |
| 739 |
|
✗ |
s->int_samples[i] = samples[i]; |
| 740 |
|
|
|
| 741 |
|
✗ |
if (!s->lossless) |
| 742 |
|
✗ |
for (i = 0; i < s->frame_size; i++) |
| 743 |
|
✗ |
s->int_samples[i] = s->int_samples[i] << SAMPLE_SHIFT; |
| 744 |
|
|
|
| 745 |
|
✗ |
switch(s->decorrelation) |
| 746 |
|
|
{ |
| 747 |
|
✗ |
case MID_SIDE: |
| 748 |
|
✗ |
for (i = 0; i < s->frame_size; i += s->channels) |
| 749 |
|
|
{ |
| 750 |
|
✗ |
s->int_samples[i] += s->int_samples[i+1]; |
| 751 |
|
✗ |
s->int_samples[i+1] -= shift(s->int_samples[i], 1); |
| 752 |
|
|
} |
| 753 |
|
✗ |
break; |
| 754 |
|
✗ |
case LEFT_SIDE: |
| 755 |
|
✗ |
for (i = 0; i < s->frame_size; i += s->channels) |
| 756 |
|
✗ |
s->int_samples[i+1] -= s->int_samples[i]; |
| 757 |
|
✗ |
break; |
| 758 |
|
✗ |
case RIGHT_SIDE: |
| 759 |
|
✗ |
for (i = 0; i < s->frame_size; i += s->channels) |
| 760 |
|
✗ |
s->int_samples[i] -= s->int_samples[i+1]; |
| 761 |
|
✗ |
break; |
| 762 |
|
|
} |
| 763 |
|
|
|
| 764 |
|
✗ |
memset(s->window, 0, s->window_size * sizeof(*s->window)); |
| 765 |
|
|
|
| 766 |
|
✗ |
for (i = 0; i < s->tail_size; i++) |
| 767 |
|
✗ |
s->window[x++] = s->tail[i]; |
| 768 |
|
|
|
| 769 |
|
✗ |
for (i = 0; i < s->frame_size; i++) |
| 770 |
|
✗ |
s->window[x++] = s->int_samples[i]; |
| 771 |
|
|
|
| 772 |
|
✗ |
for (i = 0; i < s->tail_size; i++) |
| 773 |
|
✗ |
s->window[x++] = 0; |
| 774 |
|
|
|
| 775 |
|
✗ |
for (i = 0; i < s->tail_size; i++) |
| 776 |
|
✗ |
s->tail[i] = s->int_samples[s->frame_size - s->tail_size + i]; |
| 777 |
|
|
|
| 778 |
|
|
// generate taps |
| 779 |
|
✗ |
modified_levinson_durbin(s->window, s->window_size, |
| 780 |
|
|
s->predictor_k, s->num_taps, s->channels, s->tap_quant); |
| 781 |
|
|
|
| 782 |
|
✗ |
if ((ret = intlist_write(&c, state, s->predictor_k, s->num_taps, 0)) < 0) |
| 783 |
|
✗ |
return ret; |
| 784 |
|
|
|
| 785 |
|
✗ |
for (ch = 0; ch < s->channels; ch++) |
| 786 |
|
|
{ |
| 787 |
|
✗ |
x = s->tail_size+ch; |
| 788 |
|
✗ |
for (i = 0; i < s->block_align; i++) |
| 789 |
|
|
{ |
| 790 |
|
✗ |
int sum = 0; |
| 791 |
|
✗ |
for (j = 0; j < s->downsampling; j++, x += s->channels) |
| 792 |
|
✗ |
sum += s->window[x]; |
| 793 |
|
✗ |
s->coded_samples[ch][i] = sum; |
| 794 |
|
|
} |
| 795 |
|
|
} |
| 796 |
|
|
|
| 797 |
|
|
// simple rate control code |
| 798 |
|
✗ |
if (!s->lossless) |
| 799 |
|
|
{ |
| 800 |
|
✗ |
double energy1 = 0.0, energy2 = 0.0; |
| 801 |
|
✗ |
for (ch = 0; ch < s->channels; ch++) |
| 802 |
|
|
{ |
| 803 |
|
✗ |
for (i = 0; i < s->block_align; i++) |
| 804 |
|
|
{ |
| 805 |
|
✗ |
double sample = s->coded_samples[ch][i]; |
| 806 |
|
✗ |
energy2 += sample*sample; |
| 807 |
|
✗ |
energy1 += fabs(sample); |
| 808 |
|
|
} |
| 809 |
|
|
} |
| 810 |
|
|
|
| 811 |
|
✗ |
energy2 = sqrt(energy2/(s->channels*s->block_align)); |
| 812 |
|
✗ |
energy1 = M_SQRT2*energy1/(s->channels*s->block_align); |
| 813 |
|
|
|
| 814 |
|
|
// increase bitrate when samples are like a gaussian distribution |
| 815 |
|
|
// reduce bitrate when samples are like a two-tailed exponential distribution |
| 816 |
|
|
|
| 817 |
|
✗ |
if (energy2 > energy1) |
| 818 |
|
✗ |
energy2 += (energy2-energy1)*RATE_VARIATION; |
| 819 |
|
|
|
| 820 |
|
✗ |
quant = (int)(BASE_QUANT*s->quantization*energy2/SAMPLE_FACTOR); |
| 821 |
|
|
// av_log(avctx, AV_LOG_DEBUG, "quant: %d energy: %f / %f\n", quant, energy1, energy2); |
| 822 |
|
|
|
| 823 |
|
✗ |
quant = av_clip(quant, 1, 65534); |
| 824 |
|
|
|
| 825 |
|
✗ |
put_symbol(&c, state, quant, 0, NULL, NULL); |
| 826 |
|
|
|
| 827 |
|
✗ |
quant *= SAMPLE_FACTOR; |
| 828 |
|
|
} |
| 829 |
|
|
|
| 830 |
|
|
// write out coded samples |
| 831 |
|
✗ |
for (ch = 0; ch < s->channels; ch++) |
| 832 |
|
|
{ |
| 833 |
|
✗ |
if (!s->lossless) |
| 834 |
|
✗ |
for (i = 0; i < s->block_align; i++) |
| 835 |
|
✗ |
s->coded_samples[ch][i] = ROUNDED_DIV(s->coded_samples[ch][i], quant); |
| 836 |
|
|
|
| 837 |
|
✗ |
if ((ret = intlist_write(&c, state, s->coded_samples[ch], s->block_align, 1)) < 0) |
| 838 |
|
✗ |
return ret; |
| 839 |
|
|
} |
| 840 |
|
|
|
| 841 |
|
✗ |
avpkt->size = ff_rac_terminate(&c, 0); |
| 842 |
|
✗ |
*got_packet_ptr = 1; |
| 843 |
|
✗ |
return 0; |
| 844 |
|
|
|
| 845 |
|
|
} |
| 846 |
|
|
#endif /* CONFIG_SONIC_ENCODER || CONFIG_SONIC_LS_ENCODER */ |
| 847 |
|
|
|
| 848 |
|
|
#if CONFIG_SONIC_DECODER |
| 849 |
|
|
static const int samplerate_table[] = |
| 850 |
|
|
{ 44100, 22050, 11025, 96000, 48000, 32000, 24000, 16000, 8000 }; |
| 851 |
|
|
|
| 852 |
|
✗ |
static av_cold int sonic_decode_init(AVCodecContext *avctx) |
| 853 |
|
|
{ |
| 854 |
|
✗ |
SonicContext *s = avctx->priv_data; |
| 855 |
|
|
int *tmp; |
| 856 |
|
|
GetBitContext gb; |
| 857 |
|
|
int i; |
| 858 |
|
|
int ret; |
| 859 |
|
|
|
| 860 |
|
✗ |
s->channels = avctx->ch_layout.nb_channels; |
| 861 |
|
✗ |
s->samplerate = avctx->sample_rate; |
| 862 |
|
|
|
| 863 |
|
✗ |
if (!avctx->extradata) |
| 864 |
|
|
{ |
| 865 |
|
✗ |
av_log(avctx, AV_LOG_ERROR, "No mandatory headers present\n"); |
| 866 |
|
✗ |
return AVERROR_INVALIDDATA; |
| 867 |
|
|
} |
| 868 |
|
|
|
| 869 |
|
✗ |
ret = init_get_bits8(&gb, avctx->extradata, avctx->extradata_size); |
| 870 |
|
✗ |
if (ret < 0) |
| 871 |
|
✗ |
return ret; |
| 872 |
|
|
|
| 873 |
|
✗ |
s->version = get_bits(&gb, 2); |
| 874 |
|
✗ |
if (s->version >= 2) { |
| 875 |
|
✗ |
s->version = get_bits(&gb, 8); |
| 876 |
|
✗ |
s->minor_version = get_bits(&gb, 8); |
| 877 |
|
|
} |
| 878 |
|
✗ |
if (s->version != 2) |
| 879 |
|
|
{ |
| 880 |
|
✗ |
av_log(avctx, AV_LOG_ERROR, "Unsupported Sonic version, please report\n"); |
| 881 |
|
✗ |
return AVERROR_INVALIDDATA; |
| 882 |
|
|
} |
| 883 |
|
|
|
| 884 |
|
✗ |
if (s->version >= 1) |
| 885 |
|
|
{ |
| 886 |
|
|
int sample_rate_index; |
| 887 |
|
✗ |
s->channels = get_bits(&gb, 2); |
| 888 |
|
✗ |
sample_rate_index = get_bits(&gb, 4); |
| 889 |
|
✗ |
if (sample_rate_index >= FF_ARRAY_ELEMS(samplerate_table)) { |
| 890 |
|
✗ |
av_log(avctx, AV_LOG_ERROR, "Invalid sample_rate_index %d\n", sample_rate_index); |
| 891 |
|
✗ |
return AVERROR_INVALIDDATA; |
| 892 |
|
|
} |
| 893 |
|
✗ |
s->samplerate = samplerate_table[sample_rate_index]; |
| 894 |
|
✗ |
av_log(avctx, AV_LOG_INFO, "Sonicv2 chans: %d samprate: %d\n", |
| 895 |
|
|
s->channels, s->samplerate); |
| 896 |
|
|
} |
| 897 |
|
|
|
| 898 |
|
✗ |
if (s->channels > MAX_CHANNELS || s->channels < 1) |
| 899 |
|
|
{ |
| 900 |
|
✗ |
av_log(avctx, AV_LOG_ERROR, "Only mono and stereo streams are supported by now\n"); |
| 901 |
|
✗ |
return AVERROR_INVALIDDATA; |
| 902 |
|
|
} |
| 903 |
|
✗ |
av_channel_layout_uninit(&avctx->ch_layout); |
| 904 |
|
✗ |
avctx->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC; |
| 905 |
|
✗ |
avctx->ch_layout.nb_channels = s->channels; |
| 906 |
|
|
|
| 907 |
|
✗ |
s->lossless = get_bits1(&gb); |
| 908 |
|
✗ |
if (!s->lossless) |
| 909 |
|
✗ |
skip_bits(&gb, 3); // XXX FIXME |
| 910 |
|
✗ |
s->decorrelation = get_bits(&gb, 2); |
| 911 |
|
✗ |
if (s->decorrelation != 3 && s->channels != 2) { |
| 912 |
|
✗ |
av_log(avctx, AV_LOG_ERROR, "invalid decorrelation %d\n", s->decorrelation); |
| 913 |
|
✗ |
return AVERROR_INVALIDDATA; |
| 914 |
|
|
} |
| 915 |
|
|
|
| 916 |
|
✗ |
s->downsampling = get_bits(&gb, 2); |
| 917 |
|
✗ |
if (!s->downsampling) { |
| 918 |
|
✗ |
av_log(avctx, AV_LOG_ERROR, "invalid downsampling value\n"); |
| 919 |
|
✗ |
return AVERROR_INVALIDDATA; |
| 920 |
|
|
} |
| 921 |
|
|
|
| 922 |
|
✗ |
s->num_taps = (get_bits(&gb, 5)+1)<<5; |
| 923 |
|
✗ |
if (get_bits1(&gb)) // XXX FIXME |
| 924 |
|
✗ |
av_log(avctx, AV_LOG_INFO, "Custom quant table\n"); |
| 925 |
|
|
|
| 926 |
|
✗ |
s->block_align = 2048LL*s->samplerate/(44100*s->downsampling); |
| 927 |
|
✗ |
s->frame_size = s->channels*s->block_align*s->downsampling; |
| 928 |
|
|
// avctx->frame_size = s->block_align; |
| 929 |
|
|
|
| 930 |
|
✗ |
if (s->num_taps * s->channels > s->frame_size) { |
| 931 |
|
✗ |
av_log(avctx, AV_LOG_ERROR, |
| 932 |
|
|
"number of taps times channels (%d * %d) larger than frame size %d\n", |
| 933 |
|
|
s->num_taps, s->channels, s->frame_size); |
| 934 |
|
✗ |
return AVERROR_INVALIDDATA; |
| 935 |
|
|
} |
| 936 |
|
|
|
| 937 |
|
✗ |
av_log(avctx, AV_LOG_INFO, "Sonic: ver: %d.%d ls: %d dr: %d taps: %d block: %d frame: %d downsamp: %d\n", |
| 938 |
|
|
s->version, s->minor_version, s->lossless, s->decorrelation, s->num_taps, s->block_align, s->frame_size, s->downsampling); |
| 939 |
|
|
|
| 940 |
|
|
// generate taps |
| 941 |
|
✗ |
s->tap_quant = av_calloc(s->num_taps, sizeof(*s->tap_quant)); |
| 942 |
|
✗ |
if (!s->tap_quant) |
| 943 |
|
✗ |
return AVERROR(ENOMEM); |
| 944 |
|
|
|
| 945 |
|
✗ |
for (i = 0; i < s->num_taps; i++) |
| 946 |
|
✗ |
s->tap_quant[i] = ff_sqrt(i+1); |
| 947 |
|
|
|
| 948 |
|
✗ |
s->predictor_k = av_calloc(s->num_taps, sizeof(*s->predictor_k)); |
| 949 |
|
|
|
| 950 |
|
✗ |
tmp = av_calloc(s->num_taps, s->channels * sizeof(**s->predictor_state)); |
| 951 |
|
✗ |
if (!tmp) |
| 952 |
|
✗ |
return AVERROR(ENOMEM); |
| 953 |
|
✗ |
for (i = 0; i < s->channels; i++, tmp += s->num_taps) |
| 954 |
|
✗ |
s->predictor_state[i] = tmp; |
| 955 |
|
|
|
| 956 |
|
✗ |
tmp = av_calloc(s->block_align, s->channels * sizeof(**s->coded_samples)); |
| 957 |
|
✗ |
if (!tmp) |
| 958 |
|
✗ |
return AVERROR(ENOMEM); |
| 959 |
|
✗ |
for (i = 0; i < s->channels; i++, tmp += s->block_align) |
| 960 |
|
✗ |
s->coded_samples[i] = tmp; |
| 961 |
|
|
|
| 962 |
|
✗ |
s->int_samples = av_calloc(s->frame_size, sizeof(*s->int_samples)); |
| 963 |
|
✗ |
if (!s->int_samples) |
| 964 |
|
✗ |
return AVERROR(ENOMEM); |
| 965 |
|
|
|
| 966 |
|
✗ |
avctx->sample_fmt = AV_SAMPLE_FMT_S16; |
| 967 |
|
✗ |
return 0; |
| 968 |
|
|
} |
| 969 |
|
|
|
| 970 |
|
✗ |
static av_cold int sonic_decode_close(AVCodecContext *avctx) |
| 971 |
|
|
{ |
| 972 |
|
✗ |
SonicContext *s = avctx->priv_data; |
| 973 |
|
|
|
| 974 |
|
✗ |
av_freep(&s->int_samples); |
| 975 |
|
✗ |
av_freep(&s->tap_quant); |
| 976 |
|
✗ |
av_freep(&s->predictor_k); |
| 977 |
|
✗ |
av_freep(&s->predictor_state[0]); |
| 978 |
|
✗ |
av_freep(&s->coded_samples[0]); |
| 979 |
|
|
|
| 980 |
|
✗ |
return 0; |
| 981 |
|
|
} |
| 982 |
|
|
|
| 983 |
|
✗ |
static int sonic_decode_frame(AVCodecContext *avctx, AVFrame *frame, |
| 984 |
|
|
int *got_frame_ptr, AVPacket *avpkt) |
| 985 |
|
|
{ |
| 986 |
|
✗ |
const uint8_t *buf = avpkt->data; |
| 987 |
|
✗ |
int buf_size = avpkt->size; |
| 988 |
|
✗ |
SonicContext *s = avctx->priv_data; |
| 989 |
|
|
RangeCoder c; |
| 990 |
|
|
uint8_t state[32]; |
| 991 |
|
|
int i, quant, ch, j, ret; |
| 992 |
|
|
int16_t *samples; |
| 993 |
|
|
|
| 994 |
|
✗ |
if (buf_size == 0) return 0; |
| 995 |
|
|
|
| 996 |
|
✗ |
frame->nb_samples = s->frame_size / avctx->ch_layout.nb_channels; |
| 997 |
|
✗ |
if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) |
| 998 |
|
✗ |
return ret; |
| 999 |
|
✗ |
samples = (int16_t *)frame->data[0]; |
| 1000 |
|
|
|
| 1001 |
|
|
// av_log(NULL, AV_LOG_INFO, "buf_size: %d\n", buf_size); |
| 1002 |
|
|
|
| 1003 |
|
✗ |
memset(state, 128, sizeof(state)); |
| 1004 |
|
✗ |
ff_init_range_decoder(&c, buf, buf_size); |
| 1005 |
|
✗ |
ff_build_rac_states(&c, 0.05*(1LL<<32), 256-8); |
| 1006 |
|
|
|
| 1007 |
|
✗ |
intlist_read(&c, state, s->predictor_k, s->num_taps, 0); |
| 1008 |
|
|
|
| 1009 |
|
|
// dequantize |
| 1010 |
|
✗ |
for (i = 0; i < s->num_taps; i++) |
| 1011 |
|
✗ |
s->predictor_k[i] *= (unsigned) s->tap_quant[i]; |
| 1012 |
|
|
|
| 1013 |
|
✗ |
if (s->lossless) |
| 1014 |
|
✗ |
quant = 1; |
| 1015 |
|
|
else |
| 1016 |
|
✗ |
quant = get_symbol(&c, state, 0) * SAMPLE_FACTOR; |
| 1017 |
|
|
|
| 1018 |
|
|
// av_log(NULL, AV_LOG_INFO, "quant: %d\n", quant); |
| 1019 |
|
|
|
| 1020 |
|
✗ |
for (ch = 0; ch < s->channels; ch++) |
| 1021 |
|
|
{ |
| 1022 |
|
✗ |
int x = ch; |
| 1023 |
|
|
|
| 1024 |
|
✗ |
if (c.overread > MAX_OVERREAD) |
| 1025 |
|
✗ |
return AVERROR_INVALIDDATA; |
| 1026 |
|
|
|
| 1027 |
|
✗ |
predictor_init_state(s->predictor_k, s->predictor_state[ch], s->num_taps); |
| 1028 |
|
|
|
| 1029 |
|
✗ |
intlist_read(&c, state, s->coded_samples[ch], s->block_align, 1); |
| 1030 |
|
|
|
| 1031 |
|
✗ |
for (i = 0; i < s->block_align; i++) |
| 1032 |
|
|
{ |
| 1033 |
|
✗ |
for (j = 0; j < s->downsampling - 1; j++) |
| 1034 |
|
|
{ |
| 1035 |
|
✗ |
s->int_samples[x] = predictor_calc_error(s->predictor_k, s->predictor_state[ch], s->num_taps, 0); |
| 1036 |
|
✗ |
x += s->channels; |
| 1037 |
|
|
} |
| 1038 |
|
|
|
| 1039 |
|
✗ |
s->int_samples[x] = predictor_calc_error(s->predictor_k, s->predictor_state[ch], s->num_taps, s->coded_samples[ch][i] * (unsigned)quant); |
| 1040 |
|
✗ |
x += s->channels; |
| 1041 |
|
|
} |
| 1042 |
|
|
|
| 1043 |
|
✗ |
for (i = 0; i < s->num_taps; i++) |
| 1044 |
|
✗ |
s->predictor_state[ch][i] = s->int_samples[s->frame_size - s->channels + ch - i*s->channels]; |
| 1045 |
|
|
} |
| 1046 |
|
|
|
| 1047 |
|
✗ |
switch(s->decorrelation) |
| 1048 |
|
|
{ |
| 1049 |
|
✗ |
case MID_SIDE: |
| 1050 |
|
✗ |
for (i = 0; i < s->frame_size; i += s->channels) |
| 1051 |
|
|
{ |
| 1052 |
|
✗ |
s->int_samples[i+1] += shift(s->int_samples[i], 1); |
| 1053 |
|
✗ |
s->int_samples[i] -= s->int_samples[i+1]; |
| 1054 |
|
|
} |
| 1055 |
|
✗ |
break; |
| 1056 |
|
✗ |
case LEFT_SIDE: |
| 1057 |
|
✗ |
for (i = 0; i < s->frame_size; i += s->channels) |
| 1058 |
|
✗ |
s->int_samples[i+1] += s->int_samples[i]; |
| 1059 |
|
✗ |
break; |
| 1060 |
|
✗ |
case RIGHT_SIDE: |
| 1061 |
|
✗ |
for (i = 0; i < s->frame_size; i += s->channels) |
| 1062 |
|
✗ |
s->int_samples[i] += s->int_samples[i+1]; |
| 1063 |
|
✗ |
break; |
| 1064 |
|
|
} |
| 1065 |
|
|
|
| 1066 |
|
✗ |
if (!s->lossless) |
| 1067 |
|
✗ |
for (i = 0; i < s->frame_size; i++) |
| 1068 |
|
✗ |
s->int_samples[i] = shift(s->int_samples[i], SAMPLE_SHIFT); |
| 1069 |
|
|
|
| 1070 |
|
|
// internal -> short |
| 1071 |
|
✗ |
for (i = 0; i < s->frame_size; i++) |
| 1072 |
|
✗ |
samples[i] = av_clip_int16(s->int_samples[i]); |
| 1073 |
|
|
|
| 1074 |
|
✗ |
*got_frame_ptr = 1; |
| 1075 |
|
|
|
| 1076 |
|
✗ |
return buf_size; |
| 1077 |
|
|
} |
| 1078 |
|
|
|
| 1079 |
|
|
const FFCodec ff_sonic_decoder = { |
| 1080 |
|
|
.p.name = "sonic", |
| 1081 |
|
|
.p.long_name = NULL_IF_CONFIG_SMALL("Sonic"), |
| 1082 |
|
|
.p.type = AVMEDIA_TYPE_AUDIO, |
| 1083 |
|
|
.p.id = AV_CODEC_ID_SONIC, |
| 1084 |
|
|
.priv_data_size = sizeof(SonicContext), |
| 1085 |
|
|
.init = sonic_decode_init, |
| 1086 |
|
|
.close = sonic_decode_close, |
| 1087 |
|
|
FF_CODEC_DECODE_CB(sonic_decode_frame), |
| 1088 |
|
|
.p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_EXPERIMENTAL | AV_CODEC_CAP_CHANNEL_CONF, |
| 1089 |
|
|
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP, |
| 1090 |
|
|
}; |
| 1091 |
|
|
#endif /* CONFIG_SONIC_DECODER */ |
| 1092 |
|
|
|
| 1093 |
|
|
#if CONFIG_SONIC_ENCODER |
| 1094 |
|
|
const FFCodec ff_sonic_encoder = { |
| 1095 |
|
|
.p.name = "sonic", |
| 1096 |
|
|
.p.long_name = NULL_IF_CONFIG_SMALL("Sonic"), |
| 1097 |
|
|
.p.type = AVMEDIA_TYPE_AUDIO, |
| 1098 |
|
|
.p.id = AV_CODEC_ID_SONIC, |
| 1099 |
|
|
.priv_data_size = sizeof(SonicContext), |
| 1100 |
|
|
.init = sonic_encode_init, |
| 1101 |
|
|
FF_CODEC_ENCODE_CB(sonic_encode_frame), |
| 1102 |
|
|
.p.sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE }, |
| 1103 |
|
|
.p.capabilities = AV_CODEC_CAP_EXPERIMENTAL, |
| 1104 |
|
|
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP, |
| 1105 |
|
|
.close = sonic_encode_close, |
| 1106 |
|
|
}; |
| 1107 |
|
|
#endif |
| 1108 |
|
|
|
| 1109 |
|
|
#if CONFIG_SONIC_LS_ENCODER |
| 1110 |
|
|
const FFCodec ff_sonic_ls_encoder = { |
| 1111 |
|
|
.p.name = "sonicls", |
| 1112 |
|
|
.p.long_name = NULL_IF_CONFIG_SMALL("Sonic lossless"), |
| 1113 |
|
|
.p.type = AVMEDIA_TYPE_AUDIO, |
| 1114 |
|
|
.p.id = AV_CODEC_ID_SONIC_LS, |
| 1115 |
|
|
.priv_data_size = sizeof(SonicContext), |
| 1116 |
|
|
.init = sonic_encode_init, |
| 1117 |
|
|
FF_CODEC_ENCODE_CB(sonic_encode_frame), |
| 1118 |
|
|
.p.sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE }, |
| 1119 |
|
|
.p.capabilities = AV_CODEC_CAP_EXPERIMENTAL, |
| 1120 |
|
|
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP, |
| 1121 |
|
|
.close = sonic_encode_close, |
| 1122 |
|
|
}; |
| 1123 |
|
|
#endif |
| 1124 |
|
|
|