diff options
Diffstat (limited to 'libavcodec/wavpack.c')
| -rw-r--r-- | libavcodec/wavpack.c | 195 |
1 files changed, 26 insertions, 169 deletions
diff --git a/libavcodec/wavpack.c b/libavcodec/wavpack.c index 0847238595..ac03c16c6a 100644 --- a/libavcodec/wavpack.c +++ b/libavcodec/wavpack.c @@ -2,20 +2,20 @@ * WavPack lossless audio decoder * Copyright (c) 2006,2011 Konstantin Shishkov * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * - * Libav is distributed in the hope that it will be useful, + * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public - * License along with Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -25,60 +25,16 @@ #include "avcodec.h" #include "get_bits.h" #include "internal.h" +#include "thread.h" #include "unary.h" #include "bytestream.h" +#include "wavpack.h" /** * @file * WavPack lossless audio decoder */ -#define WV_HEADER_SIZE 32 - -#define WV_MONO 0x00000004 -#define WV_JOINT_STEREO 0x00000010 -#define WV_FALSE_STEREO 0x40000000 - -#define WV_HYBRID_MODE 0x00000008 -#define WV_HYBRID_SHAPE 0x00000008 -#define WV_HYBRID_BITRATE 0x00000200 -#define WV_HYBRID_BALANCE 0x00000400 -#define WV_INITIAL_BLOCK 0x00000800 -#define WV_FINAL_BLOCK 0x00001000 - -#define WV_SINGLE_BLOCK (WV_INITIAL_BLOCK | WV_FINAL_BLOCK) - -#define WV_FLT_SHIFT_ONES 0x01 -#define WV_FLT_SHIFT_SAME 0x02 -#define WV_FLT_SHIFT_SENT 0x04 -#define WV_FLT_ZERO_SENT 0x08 -#define WV_FLT_ZERO_SIGN 0x10 - -enum WP_ID_Flags { - WP_IDF_MASK = 0x3F, - WP_IDF_IGNORE = 0x20, - WP_IDF_ODD = 0x40, - WP_IDF_LONG = 0x80 -}; - -enum WP_ID { - WP_ID_DUMMY = 0, - WP_ID_ENCINFO, - WP_ID_DECTERMS, - WP_ID_DECWEIGHTS, - WP_ID_DECSAMPLES, - WP_ID_ENTROPY, - WP_ID_HYBRID, - WP_ID_SHAPING, - WP_ID_FLOATINFO, - WP_ID_INT32INFO, - WP_ID_DATA, - WP_ID_CORR, - WP_ID_EXTRABITS, - WP_ID_CHANINFO, - WP_ID_SAMPLE_RATE = 0x27, -}; - typedef struct SavedContext { int offset; int size; @@ -86,23 +42,6 @@ typedef struct SavedContext { uint32_t crc; } SavedContext; -#define MAX_TERMS 16 - -typedef struct Decorr { - int delta; - int value; - int weightA; - int weightB; - int samplesA[8]; - int samplesB[8]; -} Decorr; - -typedef struct WvChannel { - int median[3]; - int slow_level, error_limit; - int bitrate_acc, bitrate_delta; -} WvChannel; - typedef struct WavpackFrameContext { AVCodecContext *avctx; int frame_flags; @@ -144,102 +83,8 @@ typedef struct WavpackContext { int ch_offset; } WavpackContext; -static const int wv_rates[16] = { - 6000, 8000, 9600, 11025, 12000, 16000, 22050, 24000, - 32000, 44100, 48000, 64000, 88200, 96000, 192000, 0 -}; - -// exponent table copied from WavPack source -static const uint8_t wp_exp2_table[256] = { - 0x00, 0x01, 0x01, 0x02, 0x03, 0x03, 0x04, 0x05, 0x06, 0x06, 0x07, 0x08, 0x08, 0x09, 0x0a, 0x0b, - 0x0b, 0x0c, 0x0d, 0x0e, 0x0e, 0x0f, 0x10, 0x10, 0x11, 0x12, 0x13, 0x13, 0x14, 0x15, 0x16, 0x16, - 0x17, 0x18, 0x19, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1d, 0x1e, 0x1f, 0x20, 0x20, 0x21, 0x22, 0x23, - 0x24, 0x24, 0x25, 0x26, 0x27, 0x28, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, - 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3a, 0x3b, 0x3c, 0x3d, - 0x3e, 0x3f, 0x40, 0x41, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x48, 0x49, 0x4a, 0x4b, - 0x4c, 0x4d, 0x4e, 0x4f, 0x50, 0x51, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, - 0x5b, 0x5c, 0x5d, 0x5e, 0x5e, 0x5f, 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, - 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, - 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x87, 0x88, 0x89, 0x8a, - 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 0x90, 0x91, 0x92, 0x93, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, - 0x9c, 0x9d, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, - 0xaf, 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbc, 0xbd, 0xbe, 0xbf, 0xc0, - 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc8, 0xc9, 0xca, 0xcb, 0xcd, 0xce, 0xcf, 0xd0, 0xd2, 0xd3, 0xd4, - 0xd6, 0xd7, 0xd8, 0xd9, 0xdb, 0xdc, 0xdd, 0xde, 0xe0, 0xe1, 0xe2, 0xe4, 0xe5, 0xe6, 0xe8, 0xe9, - 0xea, 0xec, 0xed, 0xee, 0xf0, 0xf1, 0xf2, 0xf4, 0xf5, 0xf6, 0xf8, 0xf9, 0xfa, 0xfc, 0xfd, 0xff -}; - -static const uint8_t wp_log2_table [] = { - 0x00, 0x01, 0x03, 0x04, 0x06, 0x07, 0x09, 0x0a, 0x0b, 0x0d, 0x0e, 0x10, 0x11, 0x12, 0x14, 0x15, - 0x16, 0x18, 0x19, 0x1a, 0x1c, 0x1d, 0x1e, 0x20, 0x21, 0x22, 0x24, 0x25, 0x26, 0x28, 0x29, 0x2a, - 0x2c, 0x2d, 0x2e, 0x2f, 0x31, 0x32, 0x33, 0x34, 0x36, 0x37, 0x38, 0x39, 0x3b, 0x3c, 0x3d, 0x3e, - 0x3f, 0x41, 0x42, 0x43, 0x44, 0x45, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4d, 0x4e, 0x4f, 0x50, 0x51, - 0x52, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x5c, 0x5d, 0x5e, 0x5f, 0x60, 0x61, 0x62, 0x63, - 0x64, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x74, 0x75, - 0x76, 0x77, 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, - 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, - 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, - 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xb0, 0xb1, 0xb2, 0xb2, - 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, 0xc0, 0xc0, - 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcb, 0xcc, 0xcd, 0xce, - 0xcf, 0xd0, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd8, 0xd9, 0xda, 0xdb, - 0xdc, 0xdc, 0xdd, 0xde, 0xdf, 0xe0, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe4, 0xe5, 0xe6, 0xe7, 0xe7, - 0xe8, 0xe9, 0xea, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xee, 0xef, 0xf0, 0xf1, 0xf1, 0xf2, 0xf3, 0xf4, - 0xf4, 0xf5, 0xf6, 0xf7, 0xf7, 0xf8, 0xf9, 0xf9, 0xfa, 0xfb, 0xfc, 0xfc, 0xfd, 0xfe, 0xff, 0xff -}; - -static av_always_inline int wp_exp2(int16_t val) -{ - int res, neg = 0; - - if (val < 0) { - val = -val; - neg = 1; - } - - res = wp_exp2_table[val & 0xFF] | 0x100; - val >>= 8; - res = (val > 9) ? (res << (val - 9)) : (res >> (9 - val)); - return neg ? -res : res; -} - -static av_always_inline int wp_log2(int32_t val) -{ - int bits; - - if (!val) - return 0; - if (val == 1) - return 256; - val += val >> 9; - bits = av_log2(val) + 1; - if (bits < 9) - return (bits << 8) + wp_log2_table[(val << (9 - bits)) & 0xFF]; - else - return (bits << 8) + wp_log2_table[(val >> (bits - 9)) & 0xFF]; -} - #define LEVEL_DECAY(a) ((a + 0x80) >> 8) -// macros for manipulating median values -#define GET_MED(n) ((c->median[n] >> 4) + 1) -#define DEC_MED(n) c->median[n] -= ((c->median[n] + (128 >> n) - 2) / (128 >> n)) * 2 -#define INC_MED(n) c->median[n] += ((c->median[n] + (128 >> n) ) / (128 >> n)) * 5 - -// macros for applying weight -#define UPDATE_WEIGHT_CLIP(weight, delta, samples, in) \ - if (samples && in) { \ - if ((samples ^ in) < 0) { \ - weight -= delta; \ - if (weight < -1024) \ - weight = -1024; \ - } else { \ - weight += delta; \ - if (weight > 1024) \ - weight = 1024; \ - } \ - } - static av_always_inline int get_tail(GetBitContext *gb, int k) { int p, e, res; @@ -381,6 +226,10 @@ static int wv_get_value(WavpackFrameContext *ctx, GetBitContext *gb, INC_MED(2); } if (!c->error_limit) { + if (add >= 0x2000000U) { + av_log(ctx->avctx, AV_LOG_ERROR, "k %d is too large\n", add); + goto error; + } ret = base + get_tail(gb, add); if (get_bits_left(gb) <= 0) goto error; @@ -721,6 +570,13 @@ static av_cold int wv_alloc_frame_context(WavpackContext *c) return 0; } +static int init_thread_copy(AVCodecContext *avctx) +{ + WavpackContext *s = avctx->priv_data; + s->avctx = avctx; + return 0; +} + static av_cold int wavpack_decode_init(AVCodecContext *avctx) { WavpackContext *s = avctx->priv_data; @@ -748,6 +604,7 @@ static int wavpack_decode_block(AVCodecContext *avctx, int block_no, AVFrame *frame, const uint8_t *buf, int buf_size) { WavpackContext *wc = avctx->priv_data; + ThreadFrame tframe = { .f = frame }; WavpackFrameContext *s; GetByteContext gb; void *samples_l, *samples_r; @@ -908,7 +765,7 @@ static int wavpack_decode_block(AVCodecContext *avctx, int block_no, case WP_ID_ENTROPY: if (size != 6 * (s->stereo_in + 1)) { av_log(avctx, AV_LOG_ERROR, - "Entropy vars size should be %i, got %i", + "Entropy vars size should be %i, got %i.\n", 6 * (s->stereo_in + 1), size); bytestream2_skip(&gb, ssize); continue; @@ -1025,7 +882,7 @@ static int wavpack_decode_block(AVCodecContext *avctx, int block_no, chmask = bytestream2_get_le24(&gb); break; case 3: - chmask = bytestream2_get_le32(&gb);; + chmask = bytestream2_get_le32(&gb); break; case 5: bytestream2_skip(&gb, 1); @@ -1113,11 +970,10 @@ static int wavpack_decode_block(AVCodecContext *avctx, int block_no, } /* get output buffer */ - frame->nb_samples = s->samples; - if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) { - av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); + frame->nb_samples = s->samples + 1; + if ((ret = ff_thread_get_buffer(avctx, &tframe, 0)) < 0) return ret; - } + frame->nb_samples = s->samples; } if (wc->ch_offset + s->stereo >= avctx->channels) { @@ -1174,7 +1030,7 @@ static int wavpack_decode_frame(AVCodecContext *avctx, void *data, /* determine number of samples */ s->samples = AV_RL32(buf + 20); frame_flags = AV_RL32(buf + 24); - if (s->samples <= 0) { + if (s->samples <= 0 || s->samples > WV_MAX_SAMPLES) { av_log(avctx, AV_LOG_ERROR, "Invalid number of samples: %d\n", s->samples); return AVERROR_INVALIDDATA; @@ -1231,6 +1087,7 @@ AVCodec ff_wavpack_decoder = { .close = wavpack_decode_end, .decode = wavpack_decode_frame, .flush = wavpack_decode_flush, - .capabilities = CODEC_CAP_DR1, + .init_thread_copy = ONLY_IF_THREADS_ENABLED(init_thread_copy), + .capabilities = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS, .long_name = NULL_IF_CONFIG_SMALL("WavPack"), }; |