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Diffstat (limited to 'ffmpeg1/libavcodec/wavpack.c')
-rw-r--r--ffmpeg1/libavcodec/wavpack.c1265
1 files changed, 0 insertions, 1265 deletions
diff --git a/ffmpeg1/libavcodec/wavpack.c b/ffmpeg1/libavcodec/wavpack.c
deleted file mode 100644
index b30b414..0000000
--- a/ffmpeg1/libavcodec/wavpack.c
+++ /dev/null
@@ -1,1265 +0,0 @@
-/*
- * WavPack lossless audio decoder
- * Copyright (c) 2006,2011 Konstantin Shishkov
- *
- * This file is part of FFmpeg.
- *
- * 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.
- *
- * 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 FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#define BITSTREAM_READER_LE
-
-#include "libavutil/channel_layout.h"
-#include "avcodec.h"
-#include "get_bits.h"
-#include "internal.h"
-#include "unary.h"
-
-/**
- * @file
- * WavPack lossless audio decoder
- */
-
-#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_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
-
-#define WV_MAX_SAMPLES 131072
-
-enum WP_ID_Flags {
- WP_IDF_MASK = 0x1F,
- 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
-};
-
-typedef struct SavedContext {
- int offset;
- int size;
- int bits_used;
- 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;
- int stereo, stereo_in;
- int joint;
- uint32_t CRC;
- GetBitContext gb;
- int got_extra_bits;
- uint32_t crc_extra_bits;
- GetBitContext gb_extra_bits;
- int data_size; // in bits
- int samples;
- int terms;
- Decorr decorr[MAX_TERMS];
- int zero, one, zeroes;
- int extra_bits;
- int and, or, shift;
- int post_shift;
- int hybrid, hybrid_bitrate;
- int hybrid_maxclip, hybrid_minclip;
- int float_flag;
- int float_shift;
- int float_max_exp;
- WvChannel ch[2];
- int pos;
- SavedContext sc, extra_sc;
-} WavpackFrameContext;
-
-#define WV_MAX_FRAME_DECODERS 14
-
-typedef struct WavpackContext {
- AVCodecContext *avctx;
-
- WavpackFrameContext *fdec[WV_MAX_FRAME_DECODERS];
- int fdec_num;
-
- int multichannel;
- int mkv_mode;
- int block;
- int samples;
- int ch_offset;
-} WavpackContext;
-
-// 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;
-
- if (k < 1)
- return 0;
- p = av_log2(k);
- e = (1 << (p + 1)) - k - 1;
- res = p ? get_bits(gb, p) : 0;
- if (res >= e)
- res = (res << 1) - e + get_bits1(gb);
- return res;
-}
-
-static void update_error_limit(WavpackFrameContext *ctx)
-{
- int i, br[2], sl[2];
-
- for (i = 0; i <= ctx->stereo_in; i++) {
- ctx->ch[i].bitrate_acc += ctx->ch[i].bitrate_delta;
- br[i] = ctx->ch[i].bitrate_acc >> 16;
- sl[i] = LEVEL_DECAY(ctx->ch[i].slow_level);
- }
- if (ctx->stereo_in && ctx->hybrid_bitrate) {
- int balance = (sl[1] - sl[0] + br[1] + 1) >> 1;
- if (balance > br[0]) {
- br[1] = br[0] << 1;
- br[0] = 0;
- } else if (-balance > br[0]) {
- br[0] <<= 1;
- br[1] = 0;
- } else {
- br[1] = br[0] + balance;
- br[0] = br[0] - balance;
- }
- }
- for (i = 0; i <= ctx->stereo_in; i++) {
- if (ctx->hybrid_bitrate) {
- if (sl[i] - br[i] > -0x100)
- ctx->ch[i].error_limit = wp_exp2(sl[i] - br[i] + 0x100);
- else
- ctx->ch[i].error_limit = 0;
- } else {
- ctx->ch[i].error_limit = wp_exp2(br[i]);
- }
- }
-}
-
-static int wv_get_value(WavpackFrameContext *ctx, GetBitContext *gb,
- int channel, int *last)
-{
- int t, t2;
- int sign, base, add, ret;
- WvChannel *c = &ctx->ch[channel];
-
- *last = 0;
-
- if ((ctx->ch[0].median[0] < 2U) && (ctx->ch[1].median[0] < 2U) &&
- !ctx->zero && !ctx->one) {
- if (ctx->zeroes) {
- ctx->zeroes--;
- if (ctx->zeroes) {
- c->slow_level -= LEVEL_DECAY(c->slow_level);
- return 0;
- }
- } else {
- t = get_unary_0_33(gb);
- if (t >= 2) {
- if (get_bits_left(gb) < t - 1)
- goto error;
- t = get_bits(gb, t - 1) | (1 << (t-1));
- } else {
- if (get_bits_left(gb) < 0)
- goto error;
- }
- ctx->zeroes = t;
- if (ctx->zeroes) {
- 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);
- return 0;
- }
- }
- }
-
- if (ctx->zero) {
- t = 0;
- ctx->zero = 0;
- } else {
- t = get_unary_0_33(gb);
- if (get_bits_left(gb) < 0)
- goto error;
- if (t == 16) {
- t2 = get_unary_0_33(gb);
- if (t2 < 2) {
- if (get_bits_left(gb) < 0)
- goto error;
- t += t2;
- } else {
- if (get_bits_left(gb) < t2 - 1)
- goto error;
- 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;
- }
-
- if (ctx->hybrid && !channel)
- update_error_limit(ctx);
-
- 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);
- }
- if (!c->error_limit) {
- ret = base + get_tail(gb, add);
- if (get_bits_left(gb) <= 0)
- goto error;
- } else {
- int mid = (base * 2 + add + 1) >> 1;
- while (add > c->error_limit) {
- if (get_bits_left(gb) <= 0)
- goto error;
- if (get_bits1(gb)) {
- add -= (mid - base);
- base = mid;
- } else
- add = mid - base - 1;
- mid = (base * 2 + add + 1) >> 1;
- }
- ret = mid;
- }
- sign = get_bits1(gb);
- if (ctx->hybrid_bitrate)
- c->slow_level += wp_log2(ret) - LEVEL_DECAY(c->slow_level);
- return sign ? ~ret : ret;
-
-error:
- *last = 1;
- return 0;
-}
-
-static inline int wv_get_value_integer(WavpackFrameContext *s, uint32_t *crc,
- int S)
-{
- int bit;
-
- if (s->extra_bits){
- S <<= s->extra_bits;
-
- if (s->got_extra_bits && get_bits_left(&s->gb_extra_bits) >= s->extra_bits) {
- S |= get_bits(&s->gb_extra_bits, s->extra_bits);
- *crc = *crc * 9 + (S & 0xffff) * 3 + ((unsigned)S >> 16);
- }
- }
-
- bit = (S & s->and) | s->or;
- bit = ((S + bit) << s->shift) - bit;
-
- if (s->hybrid)
- bit = av_clip(bit, s->hybrid_minclip, s->hybrid_maxclip);
-
- return bit << s->post_shift;
-}
-
-static float wv_get_value_float(WavpackFrameContext *s, uint32_t *crc, int S)
-{
- union {
- float f;
- uint32_t u;
- } value;
-
- unsigned int sign;
- int exp = s->float_max_exp;
-
- if (s->got_extra_bits) {
- const int max_bits = 1 + 23 + 8 + 1;
- const int left_bits = get_bits_left(&s->gb_extra_bits);
-
- if (left_bits + 8 * FF_INPUT_BUFFER_PADDING_SIZE < max_bits)
- return 0.0;
- }
-
- if (S) {
- S <<= s->float_shift;
- sign = S < 0;
- if (sign)
- S = -S;
- if (S >= 0x1000000) {
- if (s->got_extra_bits && get_bits1(&s->gb_extra_bits))
- S = get_bits(&s->gb_extra_bits, 23);
- else
- S = 0;
- exp = 255;
- } else if (exp) {
- int shift = 23 - av_log2(S);
- exp = s->float_max_exp;
- if (exp <= shift)
- shift = --exp;
- exp -= shift;
-
- if (shift) {
- S <<= shift;
- if ((s->float_flag & WV_FLT_SHIFT_ONES) ||
- (s->got_extra_bits && (s->float_flag & WV_FLT_SHIFT_SAME) &&
- get_bits1(&s->gb_extra_bits))) {
- S |= (1 << shift) - 1;
- } else if (s->got_extra_bits &&
- (s->float_flag & WV_FLT_SHIFT_SENT)) {
- S |= get_bits(&s->gb_extra_bits, shift);
- }
- }
- } else {
- exp = s->float_max_exp;
- }
- S &= 0x7fffff;
- } else {
- sign = 0;
- exp = 0;
- if (s->got_extra_bits && (s->float_flag & WV_FLT_ZERO_SENT)) {
- if (get_bits1(&s->gb_extra_bits)) {
- S = get_bits(&s->gb_extra_bits, 23);
- if (s->float_max_exp >= 25)
- exp = get_bits(&s->gb_extra_bits, 8);
- sign = get_bits1(&s->gb_extra_bits);
- } else {
- if (s->float_flag & WV_FLT_ZERO_SIGN)
- sign = get_bits1(&s->gb_extra_bits);
- }
- }
- }
-
- *crc = *crc * 27 + S * 9 + exp * 3 + sign;
-
- value.u = (sign << 31) | (exp << 23) | S;
- return value.f;
-}
-
-static void wv_reset_saved_context(WavpackFrameContext *s)
-{
- s->pos = 0;
- s->sc.crc = s->extra_sc.crc = 0xFFFFFFFF;
-}
-
-static inline int wv_check_crc(WavpackFrameContext *s, uint32_t crc,
- uint32_t crc_extra_bits)
-{
- if (crc != s->CRC) {
- av_log(s->avctx, AV_LOG_ERROR, "CRC error\n");
- return AVERROR_INVALIDDATA;
- }
- 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 AVERROR_INVALIDDATA;
- }
-
- return 0;
-}
-
-static inline int wv_unpack_stereo(WavpackFrameContext *s, GetBitContext *gb,
- void *dst, const int type)
-{
- int i, j, count = 0;
- int last, t;
- int A, B, L, L2, R, R2;
- int pos = s->pos;
- uint32_t crc = s->sc.crc;
- uint32_t crc_extra_bits = s->extra_sc.crc;
- int16_t *dst16 = dst;
- int32_t *dst32 = dst;
- float *dstfl = dst;
- const int channel_pad = s->avctx->channels - 2;
-
- s->one = s->zero = s->zeroes = 0;
- do {
- L = wv_get_value(s, gb, 0, &last);
- if (last)
- break;
- R = wv_get_value(s, gb, 1, &last);
- 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;
- }
- if (type != AV_SAMPLE_FMT_S16) {
- L2 = L + ((s->decorr[i].weightA * (int64_t)A + 512) >> 10);
- R2 = R + ((s->decorr[i].weightB * (int64_t)B + 512) >> 10);
- } else {
- L2 = L + ((s->decorr[i].weightA * A + 512) >> 10);
- R2 = R + ((s->decorr[i].weightB * B + 512) >> 10);
- }
- 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) {
- if (type != AV_SAMPLE_FMT_S16)
- 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);
- UPDATE_WEIGHT_CLIP(s->decorr[i].weightA, s->decorr[i].delta, s->decorr[i].samplesA[0], L);
- L = L2;
- if (type != AV_SAMPLE_FMT_S16)
- R2 = R + ((s->decorr[i].weightB * (int64_t)L2 + 512) >> 10);
- else
- R2 = R + ((s->decorr[i].weightB * L2 + 512) >> 10);
- UPDATE_WEIGHT_CLIP(s->decorr[i].weightB, s->decorr[i].delta, L2, R);
- R = R2;
- s->decorr[i].samplesA[0] = R;
- } else {
- if (type != AV_SAMPLE_FMT_S16)
- 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);
- 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;
- }
-
- if (type != AV_SAMPLE_FMT_S16)
- L2 = L + ((s->decorr[i].weightA * (int64_t)R2 + 512) >> 10);
- else
- L2 = L + ((s->decorr[i].weightA * R2 + 512) >> 10);
- 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;
-
- if (type == AV_SAMPLE_FMT_FLT) {
- *dstfl++ = wv_get_value_float(s, &crc_extra_bits, L);
- *dstfl++ = wv_get_value_float(s, &crc_extra_bits, R);
- dstfl += channel_pad;
- } else if (type == AV_SAMPLE_FMT_S32) {
- *dst32++ = wv_get_value_integer(s, &crc_extra_bits, L);
- *dst32++ = wv_get_value_integer(s, &crc_extra_bits, R);
- dst32 += channel_pad;
- } else {
- *dst16++ = wv_get_value_integer(s, &crc_extra_bits, L);
- *dst16++ = wv_get_value_integer(s, &crc_extra_bits, R);
- dst16 += channel_pad;
- }
- count++;
- } while (!last && count < s->samples);
-
- wv_reset_saved_context(s);
- if ((s->avctx->err_recognition & AV_EF_CRCCHECK) &&
- wv_check_crc(s, crc, crc_extra_bits))
- return AVERROR_INVALIDDATA;
-
- return count * 2;
-}
-
-static inline int wv_unpack_mono(WavpackFrameContext *s, GetBitContext *gb,
- void *dst, const int type)
-{
- int i, j, count = 0;
- int last, t;
- int A, S, T;
- int pos = s->pos;
- uint32_t crc = s->sc.crc;
- uint32_t crc_extra_bits = s->extra_sc.crc;
- int16_t *dst16 = dst;
- int32_t *dst32 = dst;
- float *dstfl = dst;
- const int channel_stride = s->avctx->channels;
-
- 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;
- }
- if (type != AV_SAMPLE_FMT_S16)
- S = T + ((s->decorr[i].weightA * (int64_t)A + 512) >> 10);
- else
- S = T + ((s->decorr[i].weightA * A + 512) >> 10);
- 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;
-
- if (type == AV_SAMPLE_FMT_FLT) {
- *dstfl = wv_get_value_float(s, &crc_extra_bits, S);
- dstfl += channel_stride;
- } else if (type == AV_SAMPLE_FMT_S32) {
- *dst32 = wv_get_value_integer(s, &crc_extra_bits, S);
- dst32 += channel_stride;
- } else {
- *dst16 = wv_get_value_integer(s, &crc_extra_bits, S);
- dst16 += channel_stride;
- }
- count++;
- } while (!last && count < s->samples);
-
- wv_reset_saved_context(s);
- if ((s->avctx->err_recognition & AV_EF_CRCCHECK) &&
- wv_check_crc(s, crc, crc_extra_bits))
- return AVERROR_INVALIDDATA;
-
- return count;
-}
-
-static av_cold int wv_alloc_frame_context(WavpackContext *c)
-{
-
- if (c->fdec_num == WV_MAX_FRAME_DECODERS)
- return -1;
-
- c->fdec[c->fdec_num] = av_mallocz(sizeof(**c->fdec));
- if (!c->fdec[c->fdec_num])
- return -1;
- c->fdec_num++;
- c->fdec[c->fdec_num - 1]->avctx = c->avctx;
- wv_reset_saved_context(c->fdec[c->fdec_num - 1]);
-
- return 0;
-}
-
-static av_cold int wavpack_decode_init(AVCodecContext *avctx)
-{
- WavpackContext *s = avctx->priv_data;
-
- s->avctx = avctx;
- if (avctx->bits_per_coded_sample <= 16)
- avctx->sample_fmt = AV_SAMPLE_FMT_S16;
- else
- avctx->sample_fmt = AV_SAMPLE_FMT_S32;
- if (avctx->channels <= 2 && !avctx->channel_layout)
- avctx->channel_layout = (avctx->channels == 2) ? AV_CH_LAYOUT_STEREO :
- AV_CH_LAYOUT_MONO;
-
- s->multichannel = avctx->channels > 2;
- /* lavf demuxer does not provide extradata, Matroska stores 0x403
- there, use this to detect decoding mode for multichannel */
- s->mkv_mode = 0;
- if (s->multichannel && avctx->extradata && avctx->extradata_size == 2) {
- int ver = AV_RL16(avctx->extradata);
- if (ver >= 0x402 && ver <= 0x410)
- s->mkv_mode = 1;
- }
-
- s->fdec_num = 0;
-
- return 0;
-}
-
-static av_cold int wavpack_decode_end(AVCodecContext *avctx)
-{
- WavpackContext *s = avctx->priv_data;
- int i;
-
- for (i = 0; i < s->fdec_num; i++)
- av_freep(&s->fdec[i]);
- s->fdec_num = 0;
-
- return 0;
-}
-
-static int wavpack_decode_block(AVCodecContext *avctx, int block_no,
- void *data, int *got_frame_ptr,
- const uint8_t *buf, int buf_size)
-{
- WavpackContext *wc = avctx->priv_data;
- WavpackFrameContext *s;
- void *samples = data;
- int samplecount;
- int got_terms = 0, got_weights = 0, got_samples = 0,
- got_entropy = 0, got_bs = 0, got_float = 0, got_hybrid = 0;
- const uint8_t *orig_buf = buf;
- const uint8_t *buf_end = buf + buf_size;
- int i, j, id, size, ssize, weights, t;
- int bpp, chan, chmask, orig_bpp;
-
- if (buf_size == 0) {
- *got_frame_ptr = 0;
- return 0;
- }
-
- if (block_no >= wc->fdec_num && wv_alloc_frame_context(wc) < 0) {
- av_log(avctx, AV_LOG_ERROR, "Error creating frame decode context\n");
- return -1;
- }
-
- s = wc->fdec[block_no];
- if (!s) {
- av_log(avctx, AV_LOG_ERROR, "Context for block %d is not present\n", block_no);
- return -1;
- }
-
- if (wc->ch_offset >= avctx->channels) {
- av_log(avctx, AV_LOG_ERROR, "too many channels\n");
- return -1;
- }
-
- memset(s->decorr, 0, MAX_TERMS * sizeof(Decorr));
- memset(s->ch, 0, sizeof(s->ch));
- s->extra_bits = 0;
- s->and = s->or = s->shift = 0;
- s->got_extra_bits = 0;
-
- if (!wc->mkv_mode) {
- s->samples = AV_RL32(buf); buf += 4;
- if (!s->samples) {
- *got_frame_ptr = 0;
- return 0;
- }
- if (s->samples > wc->samples) {
- av_log(avctx, AV_LOG_ERROR, "too many samples in block");
- return -1;
- }
- } else {
- s->samples = wc->samples;
- }
- s->frame_flags = AV_RL32(buf); buf += 4;
- bpp = av_get_bytes_per_sample(avctx->sample_fmt);
- samples = (uint8_t*)samples + bpp * wc->ch_offset;
- orig_bpp = ((s->frame_flags & 0x03) + 1) << 3;
-
- s->stereo = !(s->frame_flags & WV_MONO);
- 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;
- s->post_shift = bpp * 8 - orig_bpp + ((s->frame_flags >> 13) & 0x1f);
- s->hybrid_maxclip = (( 1LL << (orig_bpp - 1)) - 1);
- s->hybrid_minclip = ((-1LL << (orig_bpp - 1)));
- s->CRC = AV_RL32(buf); buf += 4;
- if (wc->mkv_mode)
- buf += 4; //skip block size;
-
- wc->ch_offset += 1 + s->stereo;
-
- // 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:
- if (size > MAX_TERMS) {
- av_log(avctx, AV_LOG_ERROR, "Too many decorrelation terms\n");
- s->terms = 0;
- buf += ssize;
- continue;
- }
- s->terms = size;
- 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;
- }
- weights = size >> s->stereo_in;
- 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;
- if (s->stereo_in) {
- 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) && buf <= buf_end; i--) {
- if (s->decorr[i].value > 8) {
- s->decorr[i].samplesA[0] = wp_exp2(AV_RL16(buf)); buf += 2;
- s->decorr[i].samplesA[1] = wp_exp2(AV_RL16(buf)); buf += 2;
- if (s->stereo_in) {
- s->decorr[i].samplesB[0] = wp_exp2(AV_RL16(buf)); buf += 2;
- s->decorr[i].samplesB[1] = wp_exp2(AV_RL16(buf)); buf += 2;
- t += 4;
- }
- t += 4;
- } else if (s->decorr[i].value < 0) {
- s->decorr[i].samplesA[0] = wp_exp2(AV_RL16(buf)); buf += 2;
- s->decorr[i].samplesB[0] = wp_exp2(AV_RL16(buf)); buf += 2;
- t += 4;
- } else {
- for (j = 0; j < s->decorr[i].value && buf+1<buf_end; j++) {
- s->decorr[i].samplesA[j] = wp_exp2(AV_RL16(buf)); buf += 2;
- if (s->stereo_in) {
- s->decorr[i].samplesB[j] = wp_exp2(AV_RL16(buf)); buf += 2;
- }
- }
- t += s->decorr[i].value * 2 * (s->stereo_in + 1);
- }
- }
- got_samples = 1;
- break;
- 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", 6 * (s->stereo_in + 1), size);
- buf += ssize;
- continue;
- }
- 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;
- }
- }
- got_entropy = 1;
- break;
- 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;
- case WP_ID_INT32INFO:
- if (size != 4) {
- av_log(avctx, AV_LOG_ERROR, "Invalid INT32INFO, size = %i, sent_bits = %i\n", size, *buf);
- buf += ssize;
- continue;
- }
- if (buf[0])
- s->extra_bits = buf[0];
- else if (buf[1])
- 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];
- }
- /* original WavPack decoder forces 32-bit lossy sound to be treated
- * as 24-bit one in order to have proper clipping
- */
- if (s->hybrid && bpp == 4 && s->post_shift < 8 && s->shift > 8) {
- s->post_shift += 8;
- s->shift -= 8;
- s->hybrid_maxclip >>= 8;
- s->hybrid_minclip >>= 8;
- }
- buf += 4;
- break;
- case WP_ID_FLOATINFO:
- if (size != 4) {
- av_log(avctx, AV_LOG_ERROR, "Invalid FLOATINFO, size = %i\n", size);
- buf += ssize;
- continue;
- }
- s->float_flag = buf[0];
- s->float_shift = buf[1];
- s->float_max_exp = buf[2];
- buf += 4;
- got_float = 1;
- break;
- case WP_ID_DATA:
- s->sc.offset = buf - orig_buf;
- s->sc.size = size * 8;
- init_get_bits(&s->gb, buf, size * 8);
- s->data_size = size * 8;
- buf += size;
- got_bs = 1;
- break;
- case WP_ID_EXTRABITS:
- if (size <= 4) {
- av_log(avctx, AV_LOG_ERROR, "Invalid EXTRABITS, size = %i\n",
- size);
- buf += size;
- continue;
- }
- s->extra_sc.offset = buf - orig_buf;
- s->extra_sc.size = size * 8;
- 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;
- case WP_ID_CHANINFO:
- if (size <= 1) {
- av_log(avctx, AV_LOG_ERROR, "Insufficient channel information\n");
- return -1;
- }
- chan = *buf++;
- switch (size - 2) {
- case 0: chmask = *buf; break;
- case 1: chmask = AV_RL16(buf); break;
- case 2: chmask = AV_RL24(buf); break;
- case 3: chmask = AV_RL32(buf); break;
- case 5:
- chan |= (buf[1] & 0xF) << 8;
- chmask = AV_RL24(buf + 2);
- break;
- default:
- av_log(avctx, AV_LOG_ERROR, "Invalid channel info size %d\n",
- size);
- chan = avctx->channels;
- chmask = avctx->channel_layout;
- }
- if (chan != avctx->channels) {
- av_log(avctx, AV_LOG_ERROR, "Block reports total %d channels, "
- "decoder believes it's %d channels\n", chan,
- avctx->channels);
- return -1;
- }
- if (!avctx->channel_layout)
- avctx->channel_layout = chmask;
- buf += size - 1;
- break;
- 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;
- }
- if (s->hybrid && !got_hybrid) {
- av_log(avctx, AV_LOG_ERROR, "Hybrid config not found\n");
- return -1;
- }
- if (!got_bs) {
- av_log(avctx, AV_LOG_ERROR, "Packed samples not found\n");
- return -1;
- }
- if (!got_float && avctx->sample_fmt == AV_SAMPLE_FMT_FLT) {
- av_log(avctx, AV_LOG_ERROR, "Float information not found\n");
- return -1;
- }
- if (s->got_extra_bits && avctx->sample_fmt != AV_SAMPLE_FMT_FLT) {
- const int size = get_bits_left(&s->gb_extra_bits);
- const int wanted = s->samples * s->extra_bits << s->stereo_in;
- if (size < wanted) {
- av_log(avctx, AV_LOG_ERROR, "Too small EXTRABITS\n");
- s->got_extra_bits = 0;
- }
- }
-
- if (s->stereo_in) {
- if (avctx->sample_fmt == AV_SAMPLE_FMT_S16)
- samplecount = wv_unpack_stereo(s, &s->gb, samples, AV_SAMPLE_FMT_S16);
- else if (avctx->sample_fmt == AV_SAMPLE_FMT_S32)
- samplecount = wv_unpack_stereo(s, &s->gb, samples, AV_SAMPLE_FMT_S32);
- else
- samplecount = wv_unpack_stereo(s, &s->gb, samples, AV_SAMPLE_FMT_FLT);
-
- if (samplecount < 0)
- return -1;
-
- samplecount >>= 1;
- } else {
- const int channel_stride = avctx->channels;
-
- if (avctx->sample_fmt == AV_SAMPLE_FMT_S16)
- samplecount = wv_unpack_mono(s, &s->gb, samples, AV_SAMPLE_FMT_S16);
- else if (avctx->sample_fmt == AV_SAMPLE_FMT_S32)
- samplecount = wv_unpack_mono(s, &s->gb, samples, AV_SAMPLE_FMT_S32);
- else
- samplecount = wv_unpack_mono(s, &s->gb, samples, AV_SAMPLE_FMT_FLT);
-
- if (samplecount < 0)
- return -1;
-
- if (s->stereo && avctx->sample_fmt == AV_SAMPLE_FMT_S16) {
- int16_t *dst = (int16_t*)samples + 1;
- int16_t *src = (int16_t*)samples;
- int cnt = samplecount;
- while (cnt--) {
- *dst = *src;
- src += channel_stride;
- dst += channel_stride;
- }
- } else if (s->stereo && avctx->sample_fmt == AV_SAMPLE_FMT_S32) {
- int32_t *dst = (int32_t*)samples + 1;
- int32_t *src = (int32_t*)samples;
- int cnt = samplecount;
- while (cnt--) {
- *dst = *src;
- src += channel_stride;
- dst += channel_stride;
- }
- } else if (s->stereo) {
- float *dst = (float*)samples + 1;
- float *src = (float*)samples;
- int cnt = samplecount;
- while (cnt--) {
- *dst = *src;
- src += channel_stride;
- dst += channel_stride;
- }
- }
- }
-
- *got_frame_ptr = 1;
-
- return samplecount * bpp;
-}
-
-static void wavpack_decode_flush(AVCodecContext *avctx)
-{
- WavpackContext *s = avctx->priv_data;
- int i;
-
- for (i = 0; i < s->fdec_num; i++)
- wv_reset_saved_context(s->fdec[i]);
-}
-
-static int wavpack_decode_frame(AVCodecContext *avctx, void *data,
- int *got_frame_ptr, AVPacket *avpkt)
-{
- WavpackContext *s = avctx->priv_data;
- const uint8_t *buf = avpkt->data;
- int buf_size = avpkt->size;
- AVFrame *frame = data;
- int frame_size, ret, frame_flags;
- int samplecount = 0;
-
- s->block = 0;
- s->ch_offset = 0;
-
- /* determine number of samples */
- if (s->mkv_mode) {
- s->samples = AV_RL32(buf); buf += 4;
- frame_flags = AV_RL32(buf);
- } else {
- if (s->multichannel) {
- s->samples = AV_RL32(buf + 4);
- frame_flags = AV_RL32(buf + 8);
- } else {
- s->samples = AV_RL32(buf);
- frame_flags = AV_RL32(buf + 4);
- }
- }
- 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(EINVAL);
- }
-
- if (frame_flags & 0x80) {
- avctx->sample_fmt = AV_SAMPLE_FMT_FLT;
- } else if ((frame_flags & 0x03) <= 1) {
- avctx->sample_fmt = AV_SAMPLE_FMT_S16;
- } else {
- avctx->sample_fmt = AV_SAMPLE_FMT_S32;
- avctx->bits_per_raw_sample = ((frame_flags & 0x03) + 1) << 3;
- }
-
- /* get output buffer */
- frame->nb_samples = s->samples + 1;
- if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
- return ret;
- frame->nb_samples = s->samples;
-
- while (buf_size > 0) {
- if (!s->multichannel) {
- frame_size = buf_size;
- } else {
- if (!s->mkv_mode) {
- frame_size = AV_RL32(buf) - 12; buf += 4; buf_size -= 4;
- } else {
- if (buf_size < 12) //MKV files can have zero flags after last block
- break;
- frame_size = AV_RL32(buf + 8) + 12;
- }
- }
- if (frame_size < 0 || frame_size > buf_size) {
- av_log(avctx, AV_LOG_ERROR, "Block %d has invalid size (size %d "
- "vs. %d bytes left)\n", s->block, frame_size, buf_size);
- wavpack_decode_flush(avctx);
- return AVERROR_INVALIDDATA;
- }
- if ((samplecount = wavpack_decode_block(avctx, s->block,
- frame->data[0], got_frame_ptr,
- buf, frame_size)) < 0) {
- wavpack_decode_flush(avctx);
- return AVERROR_INVALIDDATA;
- }
- s->block++;
- buf += frame_size; buf_size -= frame_size;
- }
-
- return avpkt->size;
-}
-
-AVCodec ff_wavpack_decoder = {
- .name = "wavpack",
- .type = AVMEDIA_TYPE_AUDIO,
- .id = AV_CODEC_ID_WAVPACK,
- .priv_data_size = sizeof(WavpackContext),
- .init = wavpack_decode_init,
- .close = wavpack_decode_end,
- .decode = wavpack_decode_frame,
- .flush = wavpack_decode_flush,
- .capabilities = CODEC_CAP_SUBFRAMES | CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("WavPack"),
-};
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-06 17:06:47 +0000