2006-09-26 03:41:51 +00:00
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/*
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* WavPack lossless audio decoder
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* Copyright (c) 2006 Konstantin Shishkov
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*
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2006-10-07 15:30:46 +00:00
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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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2006-09-26 03:41:51 +00:00
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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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2006-10-07 15:30:46 +00:00
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* version 2.1 of the License, or (at your option) any later version.
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2006-09-26 03:41:51 +00:00
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*
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2006-10-07 15:30:46 +00:00
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* FFmpeg is distributed in the hope that it will be useful,
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2006-09-26 03:41:51 +00:00
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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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2006-10-07 15:30:46 +00:00
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* License along with FFmpeg; if not, write to the Free Software
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2006-09-26 03:41:51 +00:00
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#define ALT_BITSTREAM_READER_LE
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#include "avcodec.h"
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2009-04-13 16:20:26 +00:00
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#include "get_bits.h"
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2007-08-26 22:33:48 +00:00
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#include "unary.h"
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2006-09-26 03:41:51 +00:00
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/**
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2009-02-01 02:00:19 +00:00
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* @file libavcodec/wavpack.c
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2006-09-26 03:41:51 +00:00
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* WavPack lossless audio decoder
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*/
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2009-01-16 17:46:19 +00:00
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#define WV_MONO 0x00000004
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2007-08-13 05:35:48 +00:00
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#define WV_JOINT_STEREO 0x00000010
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2007-08-13 05:36:50 +00:00
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#define WV_FALSE_STEREO 0x40000000
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2006-09-26 03:41:51 +00:00
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2009-01-16 17:46:19 +00:00
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#define WV_HYBRID_MODE 0x00000008
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#define WV_HYBRID_SHAPE 0x00000008
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#define WV_HYBRID_BITRATE 0x00000200
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#define WV_HYBRID_BALANCE 0x00000400
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2006-09-26 03:41:51 +00:00
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enum WP_ID_Flags{
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WP_IDF_MASK = 0x1F,
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WP_IDF_IGNORE = 0x20,
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WP_IDF_ODD = 0x40,
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WP_IDF_LONG = 0x80
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};
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enum WP_ID{
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WP_ID_DUMMY = 0,
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WP_ID_ENCINFO,
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WP_ID_DECTERMS,
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WP_ID_DECWEIGHTS,
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WP_ID_DECSAMPLES,
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WP_ID_ENTROPY,
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WP_ID_HYBRID,
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WP_ID_SHAPING,
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WP_ID_FLOATINFO,
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WP_ID_INT32INFO,
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WP_ID_DATA,
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WP_ID_CORR,
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2009-05-02 05:17:20 +00:00
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WP_ID_EXTRABITS,
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2006-09-26 03:41:51 +00:00
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WP_ID_CHANINFO
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};
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#define MAX_TERMS 16
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typedef struct Decorr {
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int delta;
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int value;
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int weightA;
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int weightB;
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int samplesA[8];
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int samplesB[8];
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} Decorr;
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2009-01-16 17:46:19 +00:00
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typedef struct WvChannel {
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int median[3];
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int slow_level, error_limit;
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int bitrate_acc, bitrate_delta;
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} WvChannel;
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2006-09-26 03:41:51 +00:00
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typedef struct WavpackContext {
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AVCodecContext *avctx;
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2009-01-16 17:46:19 +00:00
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int frame_flags;
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2007-08-13 05:36:50 +00:00
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int stereo, stereo_in;
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2006-09-26 03:41:51 +00:00
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int joint;
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uint32_t CRC;
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GetBitContext gb;
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2009-05-02 05:17:20 +00:00
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int got_extra_bits;
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uint32_t crc_extra_bits;
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GetBitContext gb_extra_bits;
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2006-09-26 03:41:51 +00:00
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int data_size; // in bits
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int samples;
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int terms;
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Decorr decorr[MAX_TERMS];
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int zero, one, zeroes;
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2009-05-02 05:17:20 +00:00
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int extra_bits;
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2007-08-05 05:56:34 +00:00
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int and, or, shift;
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2009-04-23 07:44:04 +00:00
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int post_shift;
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2009-01-16 17:46:19 +00:00
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int hybrid, hybrid_bitrate;
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WvChannel ch[2];
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2006-09-26 03:41:51 +00:00
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} WavpackContext;
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// exponent table copied from WavPack source
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static const uint8_t wp_exp2_table [256] = {
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0x00, 0x01, 0x01, 0x02, 0x03, 0x03, 0x04, 0x05, 0x06, 0x06, 0x07, 0x08, 0x08, 0x09, 0x0a, 0x0b,
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0x0b, 0x0c, 0x0d, 0x0e, 0x0e, 0x0f, 0x10, 0x10, 0x11, 0x12, 0x13, 0x13, 0x14, 0x15, 0x16, 0x16,
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0x17, 0x18, 0x19, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1d, 0x1e, 0x1f, 0x20, 0x20, 0x21, 0x22, 0x23,
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0x24, 0x24, 0x25, 0x26, 0x27, 0x28, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2c, 0x2d, 0x2e, 0x2f, 0x30,
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0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3a, 0x3b, 0x3c, 0x3d,
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0x3e, 0x3f, 0x40, 0x41, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x48, 0x49, 0x4a, 0x4b,
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0x4c, 0x4d, 0x4e, 0x4f, 0x50, 0x51, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a,
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0x5b, 0x5c, 0x5d, 0x5e, 0x5e, 0x5f, 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
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0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,
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0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x87, 0x88, 0x89, 0x8a,
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0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 0x90, 0x91, 0x92, 0x93, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b,
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0x9c, 0x9d, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad,
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0xaf, 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbc, 0xbd, 0xbe, 0xbf, 0xc0,
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0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc8, 0xc9, 0xca, 0xcb, 0xcd, 0xce, 0xcf, 0xd0, 0xd2, 0xd3, 0xd4,
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0xd6, 0xd7, 0xd8, 0xd9, 0xdb, 0xdc, 0xdd, 0xde, 0xe0, 0xe1, 0xe2, 0xe4, 0xe5, 0xe6, 0xe8, 0xe9,
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0xea, 0xec, 0xed, 0xee, 0xf0, 0xf1, 0xf2, 0xf4, 0xf5, 0xf6, 0xf8, 0xf9, 0xfa, 0xfc, 0xfd, 0xff
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};
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2009-01-16 17:46:19 +00:00
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static const uint8_t wp_log2_table [] = {
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0x00, 0x01, 0x03, 0x04, 0x06, 0x07, 0x09, 0x0a, 0x0b, 0x0d, 0x0e, 0x10, 0x11, 0x12, 0x14, 0x15,
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0x16, 0x18, 0x19, 0x1a, 0x1c, 0x1d, 0x1e, 0x20, 0x21, 0x22, 0x24, 0x25, 0x26, 0x28, 0x29, 0x2a,
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0x2c, 0x2d, 0x2e, 0x2f, 0x31, 0x32, 0x33, 0x34, 0x36, 0x37, 0x38, 0x39, 0x3b, 0x3c, 0x3d, 0x3e,
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0x3f, 0x41, 0x42, 0x43, 0x44, 0x45, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4d, 0x4e, 0x4f, 0x50, 0x51,
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0x52, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x5c, 0x5d, 0x5e, 0x5f, 0x60, 0x61, 0x62, 0x63,
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0x64, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x74, 0x75,
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0x76, 0x77, 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85,
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0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95,
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0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4,
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0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xb0, 0xb1, 0xb2, 0xb2,
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0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, 0xc0, 0xc0,
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0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcb, 0xcc, 0xcd, 0xce,
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0xcf, 0xd0, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd8, 0xd9, 0xda, 0xdb,
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0xdc, 0xdc, 0xdd, 0xde, 0xdf, 0xe0, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe4, 0xe5, 0xe6, 0xe7, 0xe7,
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0xe8, 0xe9, 0xea, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xee, 0xef, 0xf0, 0xf1, 0xf1, 0xf2, 0xf3, 0xf4,
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0xf4, 0xf5, 0xf6, 0xf7, 0xf7, 0xf8, 0xf9, 0xf9, 0xfa, 0xfb, 0xfc, 0xfc, 0xfd, 0xfe, 0xff, 0xff
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};
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2006-12-08 00:35:08 +00:00
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static av_always_inline int wp_exp2(int16_t val)
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2006-09-26 03:41:51 +00:00
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{
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int res, neg = 0;
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if(val < 0){
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val = -val;
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neg = 1;
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}
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res = wp_exp2_table[val & 0xFF] | 0x100;
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val >>= 8;
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res = (val > 9) ? (res << (val - 9)) : (res >> (9 - val));
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return neg ? -res : res;
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}
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2009-01-16 17:46:19 +00:00
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static av_always_inline int wp_log2(int32_t val)
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{
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int bits;
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if(!val)
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return 0;
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if(val == 1)
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return 256;
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val += val >> 9;
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bits = av_log2(val) + 1;
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if(bits < 9)
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return (bits << 8) + wp_log2_table[(val << (9 - bits)) & 0xFF];
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else
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return (bits << 8) + wp_log2_table[(val >> (bits - 9)) & 0xFF];
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}
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#define LEVEL_DECAY(a) ((a + 0x80) >> 8)
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2006-09-26 03:41:51 +00:00
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// macros for manipulating median values
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2009-01-16 17:46:19 +00:00
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#define GET_MED(n) ((c->median[n] >> 4) + 1)
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#define DEC_MED(n) c->median[n] -= ((c->median[n] + (128>>n) - 2) / (128>>n)) * 2
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#define INC_MED(n) c->median[n] += ((c->median[n] + (128>>n)) / (128>>n)) * 5
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2006-09-26 03:41:51 +00:00
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// macros for applying weight
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#define UPDATE_WEIGHT_CLIP(weight, delta, samples, in) \
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if(samples && in){ \
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if((samples ^ in) < 0){ \
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weight -= delta; \
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if(weight < -1024) weight = -1024; \
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}else{ \
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weight += delta; \
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if(weight > 1024) weight = 1024; \
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} \
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}
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2006-12-08 00:35:08 +00:00
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static av_always_inline int get_tail(GetBitContext *gb, int k)
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2006-09-26 03:41:51 +00:00
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{
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int p, e, res;
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2007-01-27 14:24:40 +00:00
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if(k<1)return 0;
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p = av_log2(k);
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2006-09-26 03:41:51 +00:00
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e = (1 << (p + 1)) - k - 1;
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2006-09-28 05:01:02 +00:00
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res = p ? get_bits(gb, p) : 0;
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2006-09-26 03:41:51 +00:00
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if(res >= e){
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res = (res<<1) - e + get_bits1(gb);
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}
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return res;
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}
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2009-01-16 17:46:19 +00:00
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static void update_error_limit(WavpackContext *ctx)
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{
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int i, br[2], sl[2];
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for(i = 0; i <= ctx->stereo_in; i++){
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ctx->ch[i].bitrate_acc += ctx->ch[i].bitrate_delta;
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br[i] = ctx->ch[i].bitrate_acc >> 16;
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sl[i] = LEVEL_DECAY(ctx->ch[i].slow_level);
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}
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if(ctx->stereo_in && ctx->hybrid_bitrate){
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int balance = (sl[1] - sl[0] + br[1] + 1) >> 1;
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if(balance > br[0]){
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br[1] = br[0] << 1;
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br[0] = 0;
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}else if(-balance > br[0]){
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br[0] <<= 1;
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br[1] = 0;
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}else{
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br[1] = br[0] + balance;
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br[0] = br[0] - balance;
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}
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}
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for(i = 0; i <= ctx->stereo_in; i++){
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if(ctx->hybrid_bitrate){
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if(sl[i] - br[i] > -0x100)
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ctx->ch[i].error_limit = wp_exp2(sl[i] - br[i] + 0x100);
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else
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ctx->ch[i].error_limit = 0;
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}else{
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ctx->ch[i].error_limit = wp_exp2(br[i]);
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}
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}
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}
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static int wv_get_value(WavpackContext *ctx, GetBitContext *gb, int channel, int *last)
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2006-09-26 03:41:51 +00:00
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{
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int t, t2;
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int sign, base, add, ret;
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2009-01-16 17:46:19 +00:00
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WvChannel *c = &ctx->ch[channel];
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2006-09-26 03:41:51 +00:00
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*last = 0;
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2009-01-16 17:46:19 +00:00
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if((ctx->ch[0].median[0] < 2U) && (ctx->ch[1].median[0] < 2U) && !ctx->zero && !ctx->one){
|
2006-09-26 03:41:51 +00:00
|
|
|
if(ctx->zeroes){
|
|
|
|
ctx->zeroes--;
|
2009-01-16 17:46:19 +00:00
|
|
|
if(ctx->zeroes){
|
|
|
|
c->slow_level -= LEVEL_DECAY(c->slow_level);
|
2006-09-26 03:41:51 +00:00
|
|
|
return 0;
|
2009-01-16 17:46:19 +00:00
|
|
|
}
|
2006-09-26 03:41:51 +00:00
|
|
|
}else{
|
2007-08-26 22:38:57 +00:00
|
|
|
t = get_unary_0_33(gb);
|
2006-09-26 03:41:51 +00:00
|
|
|
if(t >= 2) t = get_bits(gb, t - 1) | (1 << (t-1));
|
|
|
|
ctx->zeroes = t;
|
|
|
|
if(ctx->zeroes){
|
2009-01-16 17:46:19 +00:00
|
|
|
memset(ctx->ch[0].median, 0, sizeof(ctx->ch[0].median));
|
|
|
|
memset(ctx->ch[1].median, 0, sizeof(ctx->ch[1].median));
|
|
|
|
c->slow_level -= LEVEL_DECAY(c->slow_level);
|
2006-09-26 03:41:51 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if(get_bits_count(gb) >= ctx->data_size){
|
|
|
|
*last = 1;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(ctx->zero){
|
|
|
|
t = 0;
|
|
|
|
ctx->zero = 0;
|
|
|
|
}else{
|
2007-08-26 22:38:57 +00:00
|
|
|
t = get_unary_0_33(gb);
|
2006-09-26 03:41:51 +00:00
|
|
|
if(get_bits_count(gb) >= ctx->data_size){
|
|
|
|
*last = 1;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
if(t == 16) {
|
2007-08-26 22:38:57 +00:00
|
|
|
t2 = get_unary_0_33(gb);
|
2006-09-26 03:41:51 +00:00
|
|
|
if(t2 < 2) t += t2;
|
|
|
|
else t += get_bits(gb, t2 - 1) | (1 << (t2 - 1));
|
|
|
|
}
|
|
|
|
|
|
|
|
if(ctx->one){
|
|
|
|
ctx->one = t&1;
|
|
|
|
t = (t>>1) + 1;
|
|
|
|
}else{
|
|
|
|
ctx->one = t&1;
|
|
|
|
t >>= 1;
|
|
|
|
}
|
|
|
|
ctx->zero = !ctx->one;
|
|
|
|
}
|
|
|
|
|
2009-01-16 17:46:19 +00:00
|
|
|
if(ctx->hybrid && !channel)
|
|
|
|
update_error_limit(ctx);
|
|
|
|
|
2006-09-26 03:41:51 +00:00
|
|
|
if(!t){
|
|
|
|
base = 0;
|
|
|
|
add = GET_MED(0) - 1;
|
|
|
|
DEC_MED(0);
|
|
|
|
}else if(t == 1){
|
|
|
|
base = GET_MED(0);
|
|
|
|
add = GET_MED(1) - 1;
|
|
|
|
INC_MED(0);
|
|
|
|
DEC_MED(1);
|
|
|
|
}else if(t == 2){
|
|
|
|
base = GET_MED(0) + GET_MED(1);
|
|
|
|
add = GET_MED(2) - 1;
|
|
|
|
INC_MED(0);
|
|
|
|
INC_MED(1);
|
|
|
|
DEC_MED(2);
|
|
|
|
}else{
|
|
|
|
base = GET_MED(0) + GET_MED(1) + GET_MED(2) * (t - 2);
|
|
|
|
add = GET_MED(2) - 1;
|
|
|
|
INC_MED(0);
|
|
|
|
INC_MED(1);
|
|
|
|
INC_MED(2);
|
|
|
|
}
|
2009-01-16 17:46:19 +00:00
|
|
|
if(!c->error_limit){
|
|
|
|
ret = base + get_tail(gb, add);
|
|
|
|
}else{
|
|
|
|
int mid = (base*2 + add + 1) >> 1;
|
|
|
|
while(add > c->error_limit){
|
|
|
|
if(get_bits1(gb)){
|
|
|
|
add -= (mid - base);
|
|
|
|
base = mid;
|
|
|
|
}else
|
|
|
|
add = mid - base - 1;
|
|
|
|
mid = (base*2 + add + 1) >> 1;
|
|
|
|
}
|
|
|
|
ret = mid;
|
|
|
|
}
|
2006-09-26 03:41:51 +00:00
|
|
|
sign = get_bits1(gb);
|
2009-01-16 17:46:19 +00:00
|
|
|
if(ctx->hybrid_bitrate)
|
|
|
|
c->slow_level += wp_log2(ret) - LEVEL_DECAY(c->slow_level);
|
2006-09-26 03:41:51 +00:00
|
|
|
return sign ? ~ret : ret;
|
|
|
|
}
|
|
|
|
|
2009-04-24 05:50:19 +00:00
|
|
|
static inline int wv_unpack_stereo(WavpackContext *s, GetBitContext *gb, void *dst, const int hires)
|
2006-09-26 03:41:51 +00:00
|
|
|
{
|
|
|
|
int i, j, count = 0;
|
|
|
|
int last, t;
|
2007-08-05 05:56:34 +00:00
|
|
|
int A, B, L, L2, R, R2, bit;
|
2006-09-26 03:41:51 +00:00
|
|
|
int pos = 0;
|
|
|
|
uint32_t crc = 0xFFFFFFFF;
|
2009-05-02 05:17:20 +00:00
|
|
|
uint32_t crc_extra_bits = 0xFFFFFFFF;
|
2009-04-24 05:50:19 +00:00
|
|
|
int16_t *dst16 = dst;
|
|
|
|
int32_t *dst32 = dst;
|
2006-09-26 03:41:51 +00:00
|
|
|
|
|
|
|
s->one = s->zero = s->zeroes = 0;
|
|
|
|
do{
|
2009-01-16 17:46:19 +00:00
|
|
|
L = wv_get_value(s, gb, 0, &last);
|
2006-09-26 03:41:51 +00:00
|
|
|
if(last) break;
|
2009-01-16 17:46:19 +00:00
|
|
|
R = wv_get_value(s, gb, 1, &last);
|
2006-09-26 03:41:51 +00:00
|
|
|
if(last) break;
|
|
|
|
for(i = 0; i < s->terms; i++){
|
|
|
|
t = s->decorr[i].value;
|
|
|
|
if(t > 0){
|
|
|
|
if(t > 8){
|
|
|
|
if(t & 1){
|
|
|
|
A = 2 * s->decorr[i].samplesA[0] - s->decorr[i].samplesA[1];
|
|
|
|
B = 2 * s->decorr[i].samplesB[0] - s->decorr[i].samplesB[1];
|
|
|
|
}else{
|
|
|
|
A = (3 * s->decorr[i].samplesA[0] - s->decorr[i].samplesA[1]) >> 1;
|
|
|
|
B = (3 * s->decorr[i].samplesB[0] - s->decorr[i].samplesB[1]) >> 1;
|
|
|
|
}
|
|
|
|
s->decorr[i].samplesA[1] = s->decorr[i].samplesA[0];
|
|
|
|
s->decorr[i].samplesB[1] = s->decorr[i].samplesB[0];
|
|
|
|
j = 0;
|
|
|
|
}else{
|
|
|
|
A = s->decorr[i].samplesA[pos];
|
|
|
|
B = s->decorr[i].samplesB[pos];
|
|
|
|
j = (pos + t) & 7;
|
|
|
|
}
|
2009-04-24 05:50:19 +00:00
|
|
|
if(hires){
|
|
|
|
L2 = L + ((s->decorr[i].weightA * (int64_t)A + 512) >> 10);
|
|
|
|
R2 = R + ((s->decorr[i].weightB * (int64_t)B + 512) >> 10);
|
2009-04-23 17:27:04 +00:00
|
|
|
}else{
|
2009-04-24 05:50:19 +00:00
|
|
|
L2 = L + ((s->decorr[i].weightA * A + 512) >> 10);
|
|
|
|
R2 = R + ((s->decorr[i].weightB * B + 512) >> 10);
|
2009-04-23 17:27:04 +00:00
|
|
|
}
|
|
|
|
if(A && L) s->decorr[i].weightA -= ((((L ^ A) >> 30) & 2) - 1) * s->decorr[i].delta;
|
|
|
|
if(B && R) s->decorr[i].weightB -= ((((R ^ B) >> 30) & 2) - 1) * s->decorr[i].delta;
|
|
|
|
s->decorr[i].samplesA[j] = L = L2;
|
|
|
|
s->decorr[i].samplesB[j] = R = R2;
|
|
|
|
}else if(t == -1){
|
2009-04-24 05:50:19 +00:00
|
|
|
if(hires)
|
|
|
|
L2 = L + ((s->decorr[i].weightA * (int64_t)s->decorr[i].samplesA[0] + 512) >> 10);
|
|
|
|
else
|
|
|
|
L2 = L + ((s->decorr[i].weightA * s->decorr[i].samplesA[0] + 512) >> 10);
|
2009-04-23 17:27:04 +00:00
|
|
|
UPDATE_WEIGHT_CLIP(s->decorr[i].weightA, s->decorr[i].delta, s->decorr[i].samplesA[0], L);
|
|
|
|
L = L2;
|
2009-04-24 05:50:19 +00:00
|
|
|
if(hires)
|
|
|
|
R2 = R + ((s->decorr[i].weightB * (int64_t)L2 + 512) >> 10);
|
|
|
|
else
|
|
|
|
R2 = R + ((s->decorr[i].weightB * L2 + 512) >> 10);
|
2009-04-23 17:27:04 +00:00
|
|
|
UPDATE_WEIGHT_CLIP(s->decorr[i].weightB, s->decorr[i].delta, L2, R);
|
|
|
|
R = R2;
|
|
|
|
s->decorr[i].samplesA[0] = R;
|
|
|
|
}else{
|
2009-04-24 05:50:19 +00:00
|
|
|
if(hires)
|
|
|
|
R2 = R + ((s->decorr[i].weightB * (int64_t)s->decorr[i].samplesB[0] + 512) >> 10);
|
|
|
|
else
|
|
|
|
R2 = R + ((s->decorr[i].weightB * s->decorr[i].samplesB[0] + 512) >> 10);
|
2009-04-23 17:27:04 +00:00
|
|
|
UPDATE_WEIGHT_CLIP(s->decorr[i].weightB, s->decorr[i].delta, s->decorr[i].samplesB[0], R);
|
|
|
|
R = R2;
|
|
|
|
|
|
|
|
if(t == -3){
|
|
|
|
R2 = s->decorr[i].samplesA[0];
|
|
|
|
s->decorr[i].samplesA[0] = R;
|
|
|
|
}
|
|
|
|
|
2009-04-24 05:50:19 +00:00
|
|
|
if(hires)
|
|
|
|
L2 = L + ((s->decorr[i].weightA * (int64_t)R2 + 512) >> 10);
|
|
|
|
else
|
|
|
|
L2 = L + ((s->decorr[i].weightA * R2 + 512) >> 10);
|
2009-04-23 17:27:04 +00:00
|
|
|
UPDATE_WEIGHT_CLIP(s->decorr[i].weightA, s->decorr[i].delta, R2, L);
|
|
|
|
L = L2;
|
|
|
|
s->decorr[i].samplesB[0] = L;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
pos = (pos + 1) & 7;
|
|
|
|
if(s->joint)
|
|
|
|
L += (R -= (L >> 1));
|
|
|
|
crc = (crc * 3 + L) * 3 + R;
|
2009-05-02 05:17:20 +00:00
|
|
|
if(s->extra_bits){
|
|
|
|
L <<= s->extra_bits;
|
|
|
|
R <<= s->extra_bits;
|
|
|
|
|
|
|
|
if(s->got_extra_bits){
|
|
|
|
L |= get_bits(&s->gb_extra_bits, s->extra_bits);
|
|
|
|
crc_extra_bits = crc_extra_bits * 9 + (L&0xffff) * 3 + ((unsigned)L>>16);
|
|
|
|
|
|
|
|
R |= get_bits(&s->gb_extra_bits, s->extra_bits);
|
|
|
|
crc_extra_bits = crc_extra_bits * 9 + (R&0xffff) * 3 + ((unsigned)R>>16);
|
|
|
|
}
|
|
|
|
}
|
2009-04-23 17:27:04 +00:00
|
|
|
bit = (L & s->and) | s->or;
|
2009-04-24 05:50:19 +00:00
|
|
|
if(hires)
|
|
|
|
*dst32++ = (((L + bit) << s->shift) - bit) << s->post_shift;
|
|
|
|
else
|
|
|
|
*dst16++ = (((L + bit) << s->shift) - bit) << s->post_shift;
|
2009-04-23 17:27:04 +00:00
|
|
|
bit = (R & s->and) | s->or;
|
2009-04-24 05:50:19 +00:00
|
|
|
if(hires)
|
|
|
|
*dst32++ = (((R + bit) << s->shift) - bit) << s->post_shift;
|
|
|
|
else
|
|
|
|
*dst16++ = (((R + bit) << s->shift) - bit) << s->post_shift;
|
2009-04-23 17:27:04 +00:00
|
|
|
count++;
|
|
|
|
}while(!last && count < s->samples);
|
|
|
|
|
|
|
|
if(crc != s->CRC){
|
|
|
|
av_log(s->avctx, AV_LOG_ERROR, "CRC error\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2009-05-02 05:17:20 +00:00
|
|
|
if(s->got_extra_bits && crc_extra_bits != s->crc_extra_bits){
|
|
|
|
av_log(s->avctx, AV_LOG_ERROR, "Extra bits CRC error\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2009-04-23 17:27:04 +00:00
|
|
|
return count * 2;
|
|
|
|
}
|
|
|
|
|
2009-04-24 05:50:19 +00:00
|
|
|
static inline int wv_unpack_mono(WavpackContext *s, GetBitContext *gb, void *dst, const int hires)
|
2009-04-23 17:27:04 +00:00
|
|
|
{
|
|
|
|
int i, j, count = 0;
|
|
|
|
int last, t;
|
|
|
|
int A, S, T, bit;
|
|
|
|
int pos = 0;
|
|
|
|
uint32_t crc = 0xFFFFFFFF;
|
2009-05-02 05:17:20 +00:00
|
|
|
uint32_t crc_extra_bits = 0xFFFFFFFF;
|
2009-04-24 05:50:19 +00:00
|
|
|
int16_t *dst16 = dst;
|
|
|
|
int32_t *dst32 = dst;
|
2009-04-23 17:27:04 +00:00
|
|
|
|
|
|
|
s->one = s->zero = s->zeroes = 0;
|
|
|
|
do{
|
|
|
|
T = wv_get_value(s, gb, 0, &last);
|
|
|
|
S = 0;
|
|
|
|
if(last) break;
|
|
|
|
for(i = 0; i < s->terms; i++){
|
|
|
|
t = s->decorr[i].value;
|
|
|
|
if(t > 8){
|
|
|
|
if(t & 1)
|
|
|
|
A = 2 * s->decorr[i].samplesA[0] - s->decorr[i].samplesA[1];
|
|
|
|
else
|
|
|
|
A = (3 * s->decorr[i].samplesA[0] - s->decorr[i].samplesA[1]) >> 1;
|
|
|
|
s->decorr[i].samplesA[1] = s->decorr[i].samplesA[0];
|
|
|
|
j = 0;
|
|
|
|
}else{
|
|
|
|
A = s->decorr[i].samplesA[pos];
|
|
|
|
j = (pos + t) & 7;
|
|
|
|
}
|
2009-04-24 05:50:19 +00:00
|
|
|
if(hires)
|
|
|
|
S = T + ((s->decorr[i].weightA * (int64_t)A + 512) >> 10);
|
|
|
|
else
|
|
|
|
S = T + ((s->decorr[i].weightA * A + 512) >> 10);
|
2009-04-23 17:27:04 +00:00
|
|
|
if(A && T) s->decorr[i].weightA -= ((((T ^ A) >> 30) & 2) - 1) * s->decorr[i].delta;
|
|
|
|
s->decorr[i].samplesA[j] = T = S;
|
|
|
|
}
|
|
|
|
pos = (pos + 1) & 7;
|
|
|
|
crc = crc * 3 + S;
|
2009-05-02 05:17:20 +00:00
|
|
|
if(s->extra_bits){
|
|
|
|
S <<= s->extra_bits;
|
|
|
|
|
|
|
|
if(s->got_extra_bits){
|
|
|
|
S |= get_bits(&s->gb_extra_bits, s->extra_bits);
|
|
|
|
crc_extra_bits = crc_extra_bits * 9 + (S&0xffff) * 3 + ((unsigned)S>>16);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-04-23 17:27:04 +00:00
|
|
|
bit = (S & s->and) | s->or;
|
2009-04-24 05:50:19 +00:00
|
|
|
if(hires)
|
|
|
|
*dst32++ = (((S + bit) << s->shift) - bit) << s->post_shift;
|
|
|
|
else
|
|
|
|
*dst16++ = (((S + bit) << s->shift) - bit) << s->post_shift;
|
2009-04-23 17:27:04 +00:00
|
|
|
count++;
|
|
|
|
}while(!last && count < s->samples);
|
|
|
|
|
|
|
|
if(crc != s->CRC){
|
|
|
|
av_log(s->avctx, AV_LOG_ERROR, "CRC error\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2009-05-02 05:17:20 +00:00
|
|
|
if(s->got_extra_bits && crc_extra_bits != s->crc_extra_bits){
|
|
|
|
av_log(s->avctx, AV_LOG_ERROR, "Extra bits CRC error\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2009-04-23 17:27:04 +00:00
|
|
|
return count;
|
|
|
|
}
|
|
|
|
|
2008-03-21 03:11:20 +00:00
|
|
|
static av_cold int wavpack_decode_init(AVCodecContext *avctx)
|
2006-09-26 03:41:51 +00:00
|
|
|
{
|
|
|
|
WavpackContext *s = avctx->priv_data;
|
|
|
|
|
|
|
|
s->avctx = avctx;
|
|
|
|
s->stereo = (avctx->channels == 2);
|
2009-04-23 17:27:04 +00:00
|
|
|
if(avctx->bits_per_coded_sample <= 16)
|
|
|
|
avctx->sample_fmt = SAMPLE_FMT_S16;
|
|
|
|
else
|
|
|
|
avctx->sample_fmt = SAMPLE_FMT_S32;
|
2008-11-19 14:57:48 +00:00
|
|
|
avctx->channel_layout = (avctx->channels==2) ? CH_LAYOUT_STEREO : CH_LAYOUT_MONO;
|
2006-09-26 03:41:51 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int wavpack_decode_frame(AVCodecContext *avctx,
|
|
|
|
void *data, int *data_size,
|
2009-04-07 15:59:50 +00:00
|
|
|
AVPacket *avpkt)
|
2006-09-26 03:41:51 +00:00
|
|
|
{
|
2009-04-07 15:59:50 +00:00
|
|
|
const uint8_t *buf = avpkt->data;
|
|
|
|
int buf_size = avpkt->size;
|
2006-09-26 03:41:51 +00:00
|
|
|
WavpackContext *s = avctx->priv_data;
|
2009-04-24 05:50:19 +00:00
|
|
|
void *samples = data;
|
2006-09-26 03:41:51 +00:00
|
|
|
int samplecount;
|
|
|
|
int got_terms = 0, got_weights = 0, got_samples = 0, got_entropy = 0, got_bs = 0;
|
2009-01-16 17:46:19 +00:00
|
|
|
int got_hybrid = 0;
|
2008-02-01 16:12:00 +00:00
|
|
|
const uint8_t* buf_end = buf + buf_size;
|
2006-09-26 03:41:51 +00:00
|
|
|
int i, j, id, size, ssize, weights, t;
|
2009-04-26 04:23:29 +00:00
|
|
|
int bpp;
|
2006-09-26 03:41:51 +00:00
|
|
|
|
2007-03-20 05:44:42 +00:00
|
|
|
if (buf_size == 0){
|
|
|
|
*data_size = 0;
|
|
|
|
return 0;
|
|
|
|
}
|
2006-09-26 03:41:51 +00:00
|
|
|
|
|
|
|
memset(s->decorr, 0, MAX_TERMS * sizeof(Decorr));
|
2009-01-16 17:46:19 +00:00
|
|
|
memset(s->ch, 0, sizeof(s->ch));
|
2009-05-02 05:17:20 +00:00
|
|
|
s->extra_bits = 0;
|
2007-08-05 05:56:34 +00:00
|
|
|
s->and = s->or = s->shift = 0;
|
2009-05-02 05:17:20 +00:00
|
|
|
s->got_extra_bits = 0;
|
2006-09-26 03:41:51 +00:00
|
|
|
|
2007-01-19 22:12:59 +00:00
|
|
|
s->samples = AV_RL32(buf); buf += 4;
|
2007-03-20 05:44:42 +00:00
|
|
|
if(!s->samples){
|
|
|
|
*data_size = 0;
|
|
|
|
return buf_size;
|
|
|
|
}
|
2009-01-16 17:46:19 +00:00
|
|
|
s->frame_flags = AV_RL32(buf); buf += 4;
|
2009-04-26 04:23:29 +00:00
|
|
|
if((s->frame_flags&0x03) <= 1){
|
|
|
|
bpp = 2;
|
|
|
|
avctx->sample_fmt = SAMPLE_FMT_S16;
|
|
|
|
} else {
|
|
|
|
bpp = 4;
|
|
|
|
avctx->sample_fmt = SAMPLE_FMT_S32;
|
|
|
|
}
|
2009-01-16 17:46:19 +00:00
|
|
|
s->stereo_in = (s->frame_flags & WV_FALSE_STEREO) ? 0 : s->stereo;
|
|
|
|
s->joint = s->frame_flags & WV_JOINT_STEREO;
|
|
|
|
s->hybrid = s->frame_flags & WV_HYBRID_MODE;
|
|
|
|
s->hybrid_bitrate = s->frame_flags & WV_HYBRID_BITRATE;
|
2009-04-23 17:27:04 +00:00
|
|
|
s->post_shift = 8 * (bpp-1-(s->frame_flags&0x03)) + ((s->frame_flags >> 13) & 0x1f);
|
2007-01-19 22:12:59 +00:00
|
|
|
s->CRC = AV_RL32(buf); buf += 4;
|
2009-04-26 04:23:29 +00:00
|
|
|
|
|
|
|
/* should not happen but who knows */
|
|
|
|
if(s->samples * bpp * avctx->channels > *data_size){
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "Packet size is too big to be handled in lavc!\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2006-09-26 03:41:51 +00:00
|
|
|
// parse metadata blocks
|
|
|
|
while(buf < buf_end){
|
|
|
|
id = *buf++;
|
|
|
|
size = *buf++;
|
|
|
|
if(id & WP_IDF_LONG) {
|
|
|
|
size |= (*buf++) << 8;
|
|
|
|
size |= (*buf++) << 16;
|
|
|
|
}
|
|
|
|
size <<= 1; // size is specified in words
|
|
|
|
ssize = size;
|
|
|
|
if(id & WP_IDF_ODD) size--;
|
|
|
|
if(size < 0){
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "Got incorrect block %02X with size %i\n", id, size);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if(buf + ssize > buf_end){
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "Block size %i is out of bounds\n", size);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if(id & WP_IDF_IGNORE){
|
|
|
|
buf += ssize;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
switch(id & WP_IDF_MASK){
|
|
|
|
case WP_ID_DECTERMS:
|
|
|
|
s->terms = size;
|
|
|
|
if(s->terms > MAX_TERMS){
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "Too many decorrelation terms\n");
|
|
|
|
buf += ssize;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
for(i = 0; i < s->terms; i++) {
|
|
|
|
s->decorr[s->terms - i - 1].value = (*buf & 0x1F) - 5;
|
|
|
|
s->decorr[s->terms - i - 1].delta = *buf >> 5;
|
|
|
|
buf++;
|
|
|
|
}
|
|
|
|
got_terms = 1;
|
|
|
|
break;
|
|
|
|
case WP_ID_DECWEIGHTS:
|
|
|
|
if(!got_terms){
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "No decorrelation terms met\n");
|
|
|
|
continue;
|
|
|
|
}
|
2007-08-13 05:36:50 +00:00
|
|
|
weights = size >> s->stereo_in;
|
2006-09-26 03:41:51 +00:00
|
|
|
if(weights > MAX_TERMS || weights > s->terms){
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "Too many decorrelation weights\n");
|
|
|
|
buf += ssize;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
for(i = 0; i < weights; i++) {
|
|
|
|
t = (int8_t)(*buf++);
|
|
|
|
s->decorr[s->terms - i - 1].weightA = t << 3;
|
|
|
|
if(s->decorr[s->terms - i - 1].weightA > 0)
|
|
|
|
s->decorr[s->terms - i - 1].weightA += (s->decorr[s->terms - i - 1].weightA + 64) >> 7;
|
2007-08-13 05:36:50 +00:00
|
|
|
if(s->stereo_in){
|
2006-09-26 03:41:51 +00:00
|
|
|
t = (int8_t)(*buf++);
|
|
|
|
s->decorr[s->terms - i - 1].weightB = t << 3;
|
|
|
|
if(s->decorr[s->terms - i - 1].weightB > 0)
|
|
|
|
s->decorr[s->terms - i - 1].weightB += (s->decorr[s->terms - i - 1].weightB + 64) >> 7;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
got_weights = 1;
|
|
|
|
break;
|
|
|
|
case WP_ID_DECSAMPLES:
|
|
|
|
if(!got_terms){
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "No decorrelation terms met\n");
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
t = 0;
|
|
|
|
for(i = s->terms - 1; (i >= 0) && (t < size); i--) {
|
|
|
|
if(s->decorr[i].value > 8){
|
2007-01-19 22:12:59 +00:00
|
|
|
s->decorr[i].samplesA[0] = wp_exp2(AV_RL16(buf)); buf += 2;
|
|
|
|
s->decorr[i].samplesA[1] = wp_exp2(AV_RL16(buf)); buf += 2;
|
2007-08-13 05:36:50 +00:00
|
|
|
if(s->stereo_in){
|
2007-01-19 22:12:59 +00:00
|
|
|
s->decorr[i].samplesB[0] = wp_exp2(AV_RL16(buf)); buf += 2;
|
|
|
|
s->decorr[i].samplesB[1] = wp_exp2(AV_RL16(buf)); buf += 2;
|
2006-09-26 03:41:51 +00:00
|
|
|
t += 4;
|
|
|
|
}
|
|
|
|
t += 4;
|
|
|
|
}else if(s->decorr[i].value < 0){
|
2007-01-19 22:12:59 +00:00
|
|
|
s->decorr[i].samplesA[0] = wp_exp2(AV_RL16(buf)); buf += 2;
|
|
|
|
s->decorr[i].samplesB[0] = wp_exp2(AV_RL16(buf)); buf += 2;
|
2006-09-26 03:41:51 +00:00
|
|
|
t += 4;
|
|
|
|
}else{
|
|
|
|
for(j = 0; j < s->decorr[i].value; j++){
|
2007-01-19 22:12:59 +00:00
|
|
|
s->decorr[i].samplesA[j] = wp_exp2(AV_RL16(buf)); buf += 2;
|
2007-08-13 05:36:50 +00:00
|
|
|
if(s->stereo_in){
|
2007-01-19 22:12:59 +00:00
|
|
|
s->decorr[i].samplesB[j] = wp_exp2(AV_RL16(buf)); buf += 2;
|
2006-09-26 03:41:51 +00:00
|
|
|
}
|
|
|
|
}
|
2007-08-13 05:36:50 +00:00
|
|
|
t += s->decorr[i].value * 2 * (s->stereo_in + 1);
|
2006-09-26 03:41:51 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
got_samples = 1;
|
|
|
|
break;
|
|
|
|
case WP_ID_ENTROPY:
|
2007-08-13 05:36:50 +00:00
|
|
|
if(size != 6 * (s->stereo_in + 1)){
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "Entropy vars size should be %i, got %i", 6 * (s->stereo_in + 1), size);
|
2006-09-26 03:41:51 +00:00
|
|
|
buf += ssize;
|
|
|
|
continue;
|
|
|
|
}
|
2009-01-16 17:46:19 +00:00
|
|
|
for(j = 0; j <= s->stereo_in; j++){
|
|
|
|
for(i = 0; i < 3; i++){
|
|
|
|
s->ch[j].median[i] = wp_exp2(AV_RL16(buf));
|
|
|
|
buf += 2;
|
|
|
|
}
|
2006-09-26 03:41:51 +00:00
|
|
|
}
|
|
|
|
got_entropy = 1;
|
|
|
|
break;
|
2009-01-16 17:46:19 +00:00
|
|
|
case WP_ID_HYBRID:
|
|
|
|
if(s->hybrid_bitrate){
|
|
|
|
for(i = 0; i <= s->stereo_in; i++){
|
|
|
|
s->ch[i].slow_level = wp_exp2(AV_RL16(buf));
|
|
|
|
buf += 2;
|
|
|
|
size -= 2;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
for(i = 0; i < (s->stereo_in + 1); i++){
|
|
|
|
s->ch[i].bitrate_acc = AV_RL16(buf) << 16;
|
|
|
|
buf += 2;
|
|
|
|
size -= 2;
|
|
|
|
}
|
|
|
|
if(size > 0){
|
|
|
|
for(i = 0; i < (s->stereo_in + 1); i++){
|
|
|
|
s->ch[i].bitrate_delta = wp_exp2((int16_t)AV_RL16(buf));
|
|
|
|
buf += 2;
|
|
|
|
}
|
|
|
|
}else{
|
|
|
|
for(i = 0; i < (s->stereo_in + 1); i++)
|
|
|
|
s->ch[i].bitrate_delta = 0;
|
|
|
|
}
|
|
|
|
got_hybrid = 1;
|
|
|
|
break;
|
2007-08-05 05:56:34 +00:00
|
|
|
case WP_ID_INT32INFO:
|
2009-04-23 18:21:16 +00:00
|
|
|
if(size != 4){
|
2007-08-05 05:56:34 +00:00
|
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid INT32INFO, size = %i, sent_bits = %i\n", size, *buf);
|
|
|
|
buf += ssize;
|
|
|
|
continue;
|
|
|
|
}
|
2009-04-23 18:21:16 +00:00
|
|
|
if(buf[0])
|
2009-05-02 05:17:20 +00:00
|
|
|
s->extra_bits = buf[0];
|
2009-04-23 18:21:16 +00:00
|
|
|
else if(buf[1])
|
2007-08-05 05:56:34 +00:00
|
|
|
s->shift = buf[1];
|
|
|
|
else if(buf[2]){
|
|
|
|
s->and = s->or = 1;
|
|
|
|
s->shift = buf[2];
|
|
|
|
}else if(buf[3]){
|
|
|
|
s->and = 1;
|
|
|
|
s->shift = buf[3];
|
|
|
|
}
|
|
|
|
buf += 4;
|
|
|
|
break;
|
2006-09-26 03:41:51 +00:00
|
|
|
case WP_ID_DATA:
|
|
|
|
init_get_bits(&s->gb, buf, size * 8);
|
|
|
|
s->data_size = size * 8;
|
|
|
|
buf += size;
|
|
|
|
got_bs = 1;
|
|
|
|
break;
|
2009-05-02 05:17:20 +00:00
|
|
|
case WP_ID_EXTRABITS:
|
|
|
|
if(size <= 4){
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid EXTRABITS, size = %i\n", size);
|
|
|
|
buf += size;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
init_get_bits(&s->gb_extra_bits, buf, size * 8);
|
|
|
|
s->crc_extra_bits = get_bits_long(&s->gb_extra_bits, 32);
|
|
|
|
buf += size;
|
|
|
|
s->got_extra_bits = 1;
|
|
|
|
break;
|
2006-09-26 03:41:51 +00:00
|
|
|
default:
|
|
|
|
buf += size;
|
|
|
|
}
|
|
|
|
if(id & WP_IDF_ODD) buf++;
|
|
|
|
}
|
|
|
|
if(!got_terms){
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "No block with decorrelation terms\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if(!got_weights){
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "No block with decorrelation weights\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if(!got_samples){
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "No block with decorrelation samples\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if(!got_entropy){
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "No block with entropy info\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2009-01-16 17:46:19 +00:00
|
|
|
if(s->hybrid && !got_hybrid){
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "Hybrid config not found\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2006-09-26 03:41:51 +00:00
|
|
|
if(!got_bs){
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "Packed samples not found\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2009-04-23 17:27:04 +00:00
|
|
|
if(s->stereo_in){
|
|
|
|
if(bpp == 2)
|
2009-04-24 05:50:19 +00:00
|
|
|
samplecount = wv_unpack_stereo(s, &s->gb, samples, 0);
|
2009-04-23 17:27:04 +00:00
|
|
|
else
|
2009-04-24 05:50:19 +00:00
|
|
|
samplecount = wv_unpack_stereo(s, &s->gb, samples, 1);
|
2009-04-23 17:27:04 +00:00
|
|
|
}else{
|
|
|
|
if(bpp == 2)
|
2009-04-24 05:50:19 +00:00
|
|
|
samplecount = wv_unpack_mono(s, &s->gb, samples, 0);
|
2009-04-23 17:27:04 +00:00
|
|
|
else
|
2009-04-24 05:50:19 +00:00
|
|
|
samplecount = wv_unpack_mono(s, &s->gb, samples, 1);
|
2009-04-23 17:27:04 +00:00
|
|
|
if(s->stereo && bpp == 2){
|
2009-04-24 05:50:19 +00:00
|
|
|
int16_t *dst = (int16_t*)samples + samplecount * 2;
|
|
|
|
int16_t *src = (int16_t*)samples + samplecount;
|
2007-08-13 05:36:50 +00:00
|
|
|
int cnt = samplecount;
|
|
|
|
while(cnt--){
|
|
|
|
*--dst = *--src;
|
|
|
|
*--dst = *src;
|
|
|
|
}
|
|
|
|
samplecount *= 2;
|
2009-04-23 17:27:04 +00:00
|
|
|
}else if(s->stereo){ //32-bit output
|
2009-04-24 05:50:19 +00:00
|
|
|
int32_t *dst = (int32_t*)samples + samplecount * 2;
|
|
|
|
int32_t *src = (int32_t*)samples + samplecount;
|
2009-04-23 17:27:04 +00:00
|
|
|
int cnt = samplecount;
|
|
|
|
while(cnt--){
|
|
|
|
*--dst = *--src;
|
|
|
|
*--dst = *src;
|
|
|
|
}
|
|
|
|
samplecount *= 2;
|
2007-08-13 05:36:50 +00:00
|
|
|
}
|
|
|
|
}
|
2009-04-23 17:27:04 +00:00
|
|
|
*data_size = samplecount * bpp;
|
2006-09-26 03:41:51 +00:00
|
|
|
|
|
|
|
return buf_size;
|
|
|
|
}
|
|
|
|
|
|
|
|
AVCodec wavpack_decoder = {
|
|
|
|
"wavpack",
|
|
|
|
CODEC_TYPE_AUDIO,
|
|
|
|
CODEC_ID_WAVPACK,
|
|
|
|
sizeof(WavpackContext),
|
|
|
|
wavpack_decode_init,
|
|
|
|
NULL,
|
2007-11-25 17:31:55 +00:00
|
|
|
NULL,
|
2006-09-26 03:41:51 +00:00
|
|
|
wavpack_decode_frame,
|
2008-06-12 21:50:13 +00:00
|
|
|
.long_name = NULL_IF_CONFIG_SMALL("WavPack"),
|
2006-09-26 03:41:51 +00:00
|
|
|
};
|