/*
* WavPack lossless audio decoder
- * Copyright (c) 2006 Konstantin Shishkov
+ * Copyright (c) 2006,2011 Konstantin Shishkov
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#define ALT_BITSTREAM_READER_LE
+
+#include "libavutil/channel_layout.h"
+
+#define BITSTREAM_READER_LE
#include "avcodec.h"
-#include "bitstream.h"
+#include "bytestream.h"
+#include "get_bits.h"
+#include "internal.h"
#include "unary.h"
/**
- * @file wavpack.c
+ * @file
* WavPack lossless audio decoder
*/
-#define WV_JOINT_STEREO 0x00000010
-#define WV_FALSE_STEREO 0x40000000
+#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
-enum WP_ID_Flags{
- WP_IDF_MASK = 0x1F,
+#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{
+enum WP_ID {
WP_ID_DUMMY = 0,
WP_ID_ENCINFO,
WP_ID_DECTERMS,
WP_ID_INT32INFO,
WP_ID_DATA,
WP_ID_CORR,
- WP_ID_FLT,
- WP_ID_CHANINFO
+ WP_ID_EXTRABITS,
+ WP_ID_CHANINFO,
+ WP_ID_SAMPLE_RATE = 0x27,
};
+typedef struct SavedContext {
+ int offset;
+ int size;
+ int bits_used;
+ uint32_t crc;
+} SavedContext;
+
#define MAX_TERMS 16
typedef struct Decorr {
int samplesB[8];
} Decorr;
-typedef struct WavpackContext {
+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 median[6];
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 block;
+ int samples;
+ 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] = {
+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,
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){
+ if (val < 0) {
val = -val;
neg = 1;
}
- res = wp_exp2_table[val & 0xFF] | 0x100;
+ res = wp_exp2_table[val & 0xFF] | 0x100;
val >>= 8;
- res = (val > 9) ? (res << (val - 9)) : (res >> (9 - val));
+ 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) ((median[n] >> 4) + 1)
-#define DEC_MED(n) median[n] -= ((median[n] + (128>>n) - 2) / (128>>n)) * 2
-#define INC_MED(n) median[n] += ((median[n] + (128>>n)) / (128>>n)) * 5
+#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; \
- } \
- }
-
+ 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);
- }
+ if (k < 1)
+ return 0;
+ p = av_log2(k);
+ e = (1 << (p + 1)) - k - 1;
+ res = get_bitsz(gb, p);
+ if (res >= e)
+ res = (res << 1) - e + get_bits1(gb);
return res;
}
-static int wv_get_value(WavpackContext *ctx, GetBitContext *gb, int *median, int *last)
+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->median[0] < 2U) && (ctx->median[3] < 2U) && !ctx->zero && !ctx->one){
- if(ctx->zeroes){
+ 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)
+ if (ctx->zeroes) {
+ c->slow_level -= LEVEL_DECAY(c->slow_level);
return 0;
- }else{
+ }
+ } else {
t = get_unary_0_33(gb);
- if(t >= 2) t = get_bits(gb, t - 1) | (1 << (t-1));
+ 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->median, 0, sizeof(ctx->median));
+ 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(get_bits_count(gb) >= ctx->data_size){
- *last = 1;
- return 0;
- }
-
- if(ctx->zero){
- t = 0;
+ if (ctx->zero) {
+ t = 0;
ctx->zero = 0;
- }else{
+ } else {
t = get_unary_0_33(gb);
- if(get_bits_count(gb) >= ctx->data_size){
- *last = 1;
- return 0;
- }
- if(t == 16) {
+ if (get_bits_left(gb) < 0)
+ goto error;
+ if (t == 16) {
t2 = get_unary_0_33(gb);
- if(t2 < 2) t += t2;
- else t += get_bits(gb, t2 - 1) | (1 << (t2 - 1));
+ 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;
+ if (ctx->one) {
+ ctx->one = t & 1;
+ t = (t >> 1) + 1;
+ } else {
+ ctx->one = t & 1;
+ t >>= 1;
}
ctx->zero = !ctx->one;
}
- if(!t){
+ if (ctx->hybrid && !channel)
+ update_error_limit(ctx);
+
+ if (!t) {
base = 0;
- add = GET_MED(0) - 1;
+ add = GET_MED(0) - 1;
DEC_MED(0);
- }else if(t == 1){
+ } else if (t == 1) {
base = GET_MED(0);
- add = GET_MED(1) - 1;
+ add = GET_MED(1) - 1;
INC_MED(0);
DEC_MED(1);
- }else if(t == 2){
+ } else if (t == 2) {
base = GET_MED(0) + GET_MED(1);
- add = GET_MED(2) - 1;
+ add = GET_MED(2) - 1;
INC_MED(0);
INC_MED(1);
DEC_MED(2);
- }else{
+ } else {
base = GET_MED(0) + GET_MED(1) + GET_MED(2) * (t - 2);
- add = GET_MED(2) - 1;
+ add = GET_MED(2) - 1;
INC_MED(0);
INC_MED(1);
INC_MED(2);
}
- ret = base + get_tail(gb, add);
+ 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 int wv_unpack_stereo(WavpackContext *s, GetBitContext *gb, int16_t *dst)
+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 * AV_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_l, void *dst_r, const int type)
{
int i, j, count = 0;
int last, t;
- int A, B, L, L2, R, R2, bit;
- int pos = 0;
- uint32_t crc = 0xFFFFFFFF;
+ 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_l = dst_l;
+ int16_t *dst16_r = dst_r;
+ int32_t *dst32_l = dst_l;
+ int32_t *dst32_r = dst_r;
+ float *dstfl_l = dst_l;
+ float *dstfl_r = dst_r;
s->one = s->zero = s->zeroes = 0;
- do{
- L = wv_get_value(s, gb, s->median, &last);
- if(last) break;
- R = wv_get_value(s, gb, s->median + 3, &last);
- if(last) break;
- for(i = 0; i < s->terms; i++){
+ 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;
- j = 0;
- if(t > 0){
- if(t > 8){
- if(t & 1){
+ 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{
+ } 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{
+ j = 0;
+ } else {
A = s->decorr[i].samplesA[pos];
B = s->decorr[i].samplesB[pos];
j = (pos + t) & 7;
}
- 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;
+ if (type != AV_SAMPLE_FMT_S16P) {
+ 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){
- L2 = L + ((s->decorr[i].weightA * s->decorr[i].samplesA[0] + 512) >> 10);
+ } else if (t == -1) {
+ if (type != AV_SAMPLE_FMT_S16P)
+ 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;
- R2 = R + ((s->decorr[i].weightB * L2 + 512) >> 10);
+ if (type != AV_SAMPLE_FMT_S16P)
+ 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;
+ R = R2;
s->decorr[i].samplesA[0] = R;
- }else{
- R2 = R + ((s->decorr[i].weightB * s->decorr[i].samplesB[0] + 512) >> 10);
+ } else {
+ if (type != AV_SAMPLE_FMT_S16P)
+ 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];
+ if (t == -3) {
+ R2 = s->decorr[i].samplesA[0];
s->decorr[i].samplesA[0] = R;
}
- L2 = L + ((s->decorr[i].weightA * R2 + 512) >> 10);
+ if (type != AV_SAMPLE_FMT_S16P)
+ 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;
+ L = L2;
s->decorr[i].samplesB[0] = L;
}
}
pos = (pos + 1) & 7;
- if(s->joint)
+ if (s->joint)
L += (R -= (L >> 1));
crc = (crc * 3 + L) * 3 + R;
- bit = (L & s->and) | s->or;
- *dst++ = ((L + bit) << s->shift) - bit;
- bit = (R & s->and) | s->or;
- *dst++ = ((R + bit) << s->shift) - bit;
+
+ if (type == AV_SAMPLE_FMT_FLTP) {
+ *dstfl_l++ = wv_get_value_float(s, &crc_extra_bits, L);
+ *dstfl_r++ = wv_get_value_float(s, &crc_extra_bits, R);
+ } else if (type == AV_SAMPLE_FMT_S32P) {
+ *dst32_l++ = wv_get_value_integer(s, &crc_extra_bits, L);
+ *dst32_r++ = wv_get_value_integer(s, &crc_extra_bits, R);
+ } else {
+ *dst16_l++ = wv_get_value_integer(s, &crc_extra_bits, L);
+ *dst16_r++ = wv_get_value_integer(s, &crc_extra_bits, R);
+ }
count++;
- }while(!last && count < s->samples);
+ } while (!last && count < s->samples);
- if(crc != s->CRC){
- av_log(s->avctx, AV_LOG_ERROR, "CRC error\n");
- return -1;
- }
- return count * 2;
+ 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 0;
}
-static int wv_unpack_mono(WavpackContext *s, GetBitContext *gb, int16_t *dst)
+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, bit;
- int pos = 0;
- uint32_t crc = 0xFFFFFFFF;
+ 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;
s->one = s->zero = s->zeroes = 0;
- do{
- T = wv_get_value(s, gb, s->median, &last);
+ do {
+ T = wv_get_value(s, gb, 0, &last);
S = 0;
- if(last) break;
- for(i = 0; i < s->terms; i++){
+ 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];
+ 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{
+ j = 0;
+ } else {
A = s->decorr[i].samplesA[pos];
j = (pos + t) & 7;
}
- 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;
+ if (type != AV_SAMPLE_FMT_S16P)
+ 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;
- bit = (S & s->and) | s->or;
- *dst++ = ((S + bit) << s->shift) - bit;
+
+ if (type == AV_SAMPLE_FMT_FLTP) {
+ *dstfl++ = wv_get_value_float(s, &crc_extra_bits, S);
+ } else if (type == AV_SAMPLE_FMT_S32P) {
+ *dst32++ = wv_get_value_integer(s, &crc_extra_bits, S);
+ } else {
+ *dst16++ = wv_get_value_integer(s, &crc_extra_bits, S);
+ }
count++;
- }while(!last && count < s->samples);
+ } while (!last && count < s->samples);
- if(crc != s->CRC){
- av_log(s->avctx, AV_LOG_ERROR, "CRC error\n");
- return -1;
+ wv_reset_saved_context(s);
+ if (s->avctx->err_recognition & AV_EF_CRCCHECK) {
+ int ret = wv_check_crc(s, crc, crc_extra_bits);
+ if (ret < 0 && s->avctx->err_recognition & AV_EF_EXPLODE)
+ return ret;
}
- return count;
+
+ return 0;
+}
+
+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 int wavpack_decode_init(AVCodecContext *avctx)
+static av_cold int wavpack_decode_init(AVCodecContext *avctx)
{
WavpackContext *s = avctx->priv_data;
s->avctx = avctx;
- s->stereo = (avctx->channels == 2);
+
+ s->fdec_num = 0;
return 0;
}
-static int wavpack_decode_close(AVCodecContext *avctx)
+static av_cold int wavpack_decode_end(AVCodecContext *avctx)
{
-// WavpackContext *s = avctx->priv_data;
+ 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_frame(AVCodecContext *avctx,
- void *data, int *data_size,
- uint8_t *buf, int buf_size)
+static int wavpack_decode_block(AVCodecContext *avctx, int block_no,
+ AVFrame *frame, const uint8_t *buf, int buf_size)
{
- WavpackContext *s = avctx->priv_data;
- int16_t *samples = data;
- int samplecount;
- int got_terms = 0, got_weights = 0, got_samples = 0, got_entropy = 0, got_bs = 0;
- uint8_t* buf_end = buf + buf_size;
+ WavpackContext *wc = avctx->priv_data;
+ WavpackFrameContext *s;
+ GetByteContext gb;
+ void *samples_l, *samples_r;
+ int ret;
+ int got_terms = 0, got_weights = 0, got_samples = 0,
+ got_entropy = 0, got_bs = 0, got_float = 0, got_hybrid = 0;
int i, j, id, size, ssize, weights, t;
+ int bpp, chan = 0, chmask = 0, orig_bpp, sample_rate = 0;
+ int multiblock;
- if (buf_size == 0){
- *data_size = 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 AVERROR_INVALIDDATA;
+ }
+
+ s = wc->fdec[block_no];
+ if (!s) {
+ av_log(avctx, AV_LOG_ERROR, "Context for block %d is not present\n",
+ block_no);
+ return AVERROR_INVALIDDATA;
}
memset(s->decorr, 0, MAX_TERMS * sizeof(Decorr));
- memset(s->median, 0, sizeof(s->median));
- s->and = s->or = s->shift = 0;
+ memset(s->ch, 0, sizeof(s->ch));
+ s->extra_bits = 0;
+ s->and = s->or = s->shift = 0;
+ s->got_extra_bits = 0;
- s->samples = AV_RL32(buf); buf += 4;
- if(!s->samples){
- *data_size = 0;
- return buf_size;
- }
- /* should not happen but who knows */
- if(s->samples * 2 * avctx->channels > *data_size){
- av_log(avctx, AV_LOG_ERROR, "Packet size is too big to be handled in lavc!\n");
- return -1;
+ bytestream2_init(&gb, buf, buf_size);
+
+ s->samples = bytestream2_get_le32(&gb);
+ if (s->samples != wc->samples) {
+ av_log(avctx, AV_LOG_ERROR, "Mismatching number of samples in "
+ "a sequence: %d and %d\n", wc->samples, s->samples);
+ return AVERROR_INVALIDDATA;
}
- s->stereo_in = (AV_RL32(buf) & WV_FALSE_STEREO) ? 0 : s->stereo;
- s->joint = AV_RL32(buf) & WV_JOINT_STEREO; buf += 4;
- s->CRC = AV_RL32(buf); buf += 4;
+ s->frame_flags = bytestream2_get_le32(&gb);
+ bpp = av_get_bytes_per_sample(avctx->sample_fmt);
+ orig_bpp = ((s->frame_flags & 0x03) + 1) << 3;
+ multiblock = (s->frame_flags & WV_SINGLE_BLOCK) != WV_SINGLE_BLOCK;
+
+ 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 = bytestream2_get_le32(&gb);
+
// parse metadata blocks
- while(buf < buf_end){
- id = *buf++;
- size = *buf++;
- if(id & WP_IDF_LONG) {
- size |= (*buf++) << 8;
- size |= (*buf++) << 16;
+ while (bytestream2_get_bytes_left(&gb)) {
+ id = bytestream2_get_byte(&gb);
+ size = bytestream2_get_byte(&gb);
+ if (id & WP_IDF_LONG) {
+ size |= (bytestream2_get_byte(&gb)) << 8;
+ size |= (bytestream2_get_byte(&gb)) << 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);
+ 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);
+ if (bytestream2_get_bytes_left(&gb) < ssize) {
+ 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){
+ switch (id & WP_IDF_MASK) {
case WP_ID_DECTERMS:
- s->terms = size;
- if(s->terms > MAX_TERMS){
+ if (size > MAX_TERMS) {
av_log(avctx, AV_LOG_ERROR, "Too many decorrelation terms\n");
- buf += ssize;
+ s->terms = 0;
+ bytestream2_skip(&gb, 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++;
+ s->terms = size;
+ for (i = 0; i < s->terms; i++) {
+ uint8_t val = bytestream2_get_byte(&gb);
+ s->decorr[s->terms - i - 1].value = (val & 0x1F) - 5;
+ s->decorr[s->terms - i - 1].delta = val >> 5;
}
got_terms = 1;
break;
case WP_ID_DECWEIGHTS:
- if(!got_terms){
+ 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){
+ if (weights > MAX_TERMS || weights > s->terms) {
av_log(avctx, AV_LOG_ERROR, "Too many decorrelation weights\n");
- buf += ssize;
+ bytestream2_skip(&gb, ssize);
continue;
}
- for(i = 0; i < weights; i++) {
- t = (int8_t)(*buf++);
+ for (i = 0; i < weights; i++) {
+ t = (int8_t)bytestream2_get_byte(&gb);
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++);
+ 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)bytestream2_get_byte(&gb);
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;
+ 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){
+ 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){
- 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;
+ for (i = s->terms - 1; (i >= 0) && (t < size); i--) {
+ if (s->decorr[i].value > 8) {
+ s->decorr[i].samplesA[0] =
+ wp_exp2(bytestream2_get_le16(&gb));
+ s->decorr[i].samplesA[1] =
+ wp_exp2(bytestream2_get_le16(&gb));
+
+ if (s->stereo_in) {
+ s->decorr[i].samplesB[0] =
+ wp_exp2(bytestream2_get_le16(&gb));
+ s->decorr[i].samplesB[1] =
+ wp_exp2(bytestream2_get_le16(&gb));
+ 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; 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;
+ } else if (s->decorr[i].value < 0) {
+ s->decorr[i].samplesA[0] =
+ wp_exp2(bytestream2_get_le16(&gb));
+ s->decorr[i].samplesB[0] =
+ wp_exp2(bytestream2_get_le16(&gb));
+ t += 4;
+ } else {
+ for (j = 0; j < s->decorr[i].value; j++) {
+ s->decorr[i].samplesA[j] =
+ wp_exp2(bytestream2_get_le16(&gb));
+ if (s->stereo_in) {
+ s->decorr[i].samplesB[j] =
+ wp_exp2(bytestream2_get_le16(&gb));
}
}
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;
+ 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);
+ bytestream2_skip(&gb, ssize);
continue;
}
- for(i = 0; i < 3 * (s->stereo_in + 1); i++){
- s->median[i] = wp_exp2(AV_RL16(buf));
- buf += 2;
- }
+ for (j = 0; j <= s->stereo_in; j++)
+ for (i = 0; i < 3; i++) {
+ s->ch[j].median[i] = wp_exp2(bytestream2_get_le16(&gb));
+ }
got_entropy = 1;
break;
- case WP_ID_INT32INFO:
- if(size != 4 || *buf){
- av_log(avctx, AV_LOG_ERROR, "Invalid INT32INFO, size = %i, sent_bits = %i\n", size, *buf);
- buf += ssize;
+ case WP_ID_HYBRID:
+ if (s->hybrid_bitrate) {
+ for (i = 0; i <= s->stereo_in; i++) {
+ s->ch[i].slow_level = wp_exp2(bytestream2_get_le16(&gb));
+ size -= 2;
+ }
+ }
+ for (i = 0; i < (s->stereo_in + 1); i++) {
+ s->ch[i].bitrate_acc = bytestream2_get_le16(&gb) << 16;
+ size -= 2;
+ }
+ if (size > 0) {
+ for (i = 0; i < (s->stereo_in + 1); i++) {
+ s->ch[i].bitrate_delta =
+ wp_exp2((int16_t)bytestream2_get_le16(&gb));
+ }
+ } else {
+ for (i = 0; i < (s->stereo_in + 1); i++)
+ s->ch[i].bitrate_delta = 0;
+ }
+ got_hybrid = 1;
+ break;
+ case WP_ID_INT32INFO: {
+ uint8_t val[4];
+ if (size != 4) {
+ av_log(avctx, AV_LOG_ERROR,
+ "Invalid INT32INFO, size = %i\n",
+ size);
+ bytestream2_skip(&gb, ssize - 4);
continue;
}
- 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];
+ bytestream2_get_buffer(&gb, val, 4);
+ if (val[0]) {
+ s->extra_bits = val[0];
+ } else if (val[1]) {
+ s->shift = val[1];
+ } else if (val[2]) {
+ s->and = s->or = 1;
+ s->shift = val[2];
+ } else if (val[3]) {
+ s->and = 1;
+ s->shift = val[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);
+ bytestream2_skip(&gb, ssize);
+ continue;
+ }
+ s->float_flag = bytestream2_get_byte(&gb);
+ s->float_shift = bytestream2_get_byte(&gb);
+ s->float_max_exp = bytestream2_get_byte(&gb);
+ got_float = 1;
+ bytestream2_skip(&gb, 1);
break;
case WP_ID_DATA:
- init_get_bits(&s->gb, buf, size * 8);
+ s->sc.offset = bytestream2_tell(&gb);
+ s->sc.size = size * 8;
+ init_get_bits(&s->gb, gb.buffer, size * 8);
s->data_size = size * 8;
- buf += size;
- got_bs = 1;
+ bytestream2_skip(&gb, size);
+ got_bs = 1;
+ break;
+ case WP_ID_EXTRABITS:
+ if (size <= 4) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid EXTRABITS, size = %i\n",
+ size);
+ bytestream2_skip(&gb, size);
+ continue;
+ }
+ s->extra_sc.offset = bytestream2_tell(&gb);
+ s->extra_sc.size = size * 8;
+ init_get_bits(&s->gb_extra_bits, gb.buffer, size * 8);
+ s->crc_extra_bits = get_bits_long(&s->gb_extra_bits, 32);
+ bytestream2_skip(&gb, 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 AVERROR_INVALIDDATA;
+ }
+ chan = bytestream2_get_byte(&gb);
+ switch (size - 2) {
+ case 0:
+ chmask = bytestream2_get_byte(&gb);
+ break;
+ case 1:
+ chmask = bytestream2_get_le16(&gb);
+ break;
+ case 2:
+ chmask = bytestream2_get_le24(&gb);
+ break;
+ case 3:
+ chmask = bytestream2_get_le32(&gb);;
+ break;
+ case 5:
+ bytestream2_skip(&gb, 1);
+ chan |= (bytestream2_get_byte(&gb) & 0xF) << 8;
+ chmask = bytestream2_get_le16(&gb);
+ break;
+ default:
+ av_log(avctx, AV_LOG_ERROR, "Invalid channel info size %d\n",
+ size);
+ chan = avctx->channels;
+ chmask = avctx->channel_layout;
+ }
+ break;
+ case WP_ID_SAMPLE_RATE:
+ if (size != 3) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid custom sample rate.\n");
+ return AVERROR_INVALIDDATA;
+ }
+ sample_rate = bytestream2_get_le24(&gb);
break;
default:
- buf += size;
+ bytestream2_skip(&gb, size);
}
- if(id & WP_IDF_ODD) buf++;
+ if (id & WP_IDF_ODD)
+ bytestream2_skip(&gb, 1);
}
- if(!got_terms){
+
+ if (!got_terms) {
av_log(avctx, AV_LOG_ERROR, "No block with decorrelation terms\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
- if(!got_weights){
+ if (!got_weights) {
av_log(avctx, AV_LOG_ERROR, "No block with decorrelation weights\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
- if(!got_samples){
+ if (!got_samples) {
av_log(avctx, AV_LOG_ERROR, "No block with decorrelation samples\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
- if(!got_entropy){
+ if (!got_entropy) {
av_log(avctx, AV_LOG_ERROR, "No block with entropy info\n");
- return -1;
+ return AVERROR_INVALIDDATA;
+ }
+ if (s->hybrid && !got_hybrid) {
+ av_log(avctx, AV_LOG_ERROR, "Hybrid config not found\n");
+ return AVERROR_INVALIDDATA;
}
- if(!got_bs){
+ if (!got_bs) {
av_log(avctx, AV_LOG_ERROR, "Packed samples not found\n");
- return -1;
+ return AVERROR_INVALIDDATA;
+ }
+ if (!got_float && avctx->sample_fmt == AV_SAMPLE_FMT_FLTP) {
+ av_log(avctx, AV_LOG_ERROR, "Float information not found\n");
+ return AVERROR_INVALIDDATA;
+ }
+ if (s->got_extra_bits && avctx->sample_fmt != AV_SAMPLE_FMT_FLTP) {
+ 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)
- samplecount = wv_unpack_stereo(s, &s->gb, samples);
- else{
- samplecount = wv_unpack_mono(s, &s->gb, samples);
- if(s->stereo){
- int16_t *dst = samples + samplecount * 2;
- int16_t *src = samples + samplecount;
- int cnt = samplecount;
- while(cnt--){
- *--dst = *--src;
- *--dst = *src;
+ if (!wc->ch_offset) {
+ int sr = (s->frame_flags >> 23) & 0xf;
+ if (sr == 0xf) {
+ if (!sample_rate) {
+ av_log(avctx, AV_LOG_ERROR, "Custom sample rate missing.\n");
+ return AVERROR_INVALIDDATA;
}
- samplecount *= 2;
+ avctx->sample_rate = sample_rate;
+ } else
+ avctx->sample_rate = wv_rates[sr];
+
+ if (multiblock) {
+ if (chan)
+ avctx->channels = chan;
+ if (chmask)
+ avctx->channel_layout = chmask;
+ } else {
+ avctx->channels = s->stereo ? 2 : 1;
+ avctx->channel_layout = s->stereo ? AV_CH_LAYOUT_STEREO :
+ AV_CH_LAYOUT_MONO;
+ }
+
+ /* 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");
+ return ret;
+ }
+ }
+
+ if (wc->ch_offset + s->stereo >= avctx->channels) {
+ av_log(avctx, AV_LOG_WARNING, "Too many channels coded in a packet.\n");
+ return (avctx->err_recognition & AV_EF_EXPLODE) ? AVERROR_INVALIDDATA : 0;
+ }
+
+ samples_l = frame->extended_data[wc->ch_offset];
+ if (s->stereo)
+ samples_r = frame->extended_data[wc->ch_offset + 1];
+
+ wc->ch_offset += 1 + s->stereo;
+
+ if (s->stereo_in) {
+ ret = wv_unpack_stereo(s, &s->gb, samples_l, samples_r, avctx->sample_fmt);
+ if (ret < 0)
+ return ret;
+ } else {
+ ret = wv_unpack_mono(s, &s->gb, samples_l, avctx->sample_fmt);
+ if (ret < 0)
+ return ret;
+
+ if (s->stereo)
+ memcpy(samples_r, samples_l, bpp * s->samples);
+ }
+
+ return 0;
+}
+
+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;
+
+ if (avpkt->size <= WV_HEADER_SIZE)
+ return AVERROR_INVALIDDATA;
+
+ s->block = 0;
+ s->ch_offset = 0;
+
+ /* determine number of samples */
+ s->samples = AV_RL32(buf + 20);
+ frame_flags = AV_RL32(buf + 24);
+ if (s->samples <= 0) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid number of samples: %d\n",
+ s->samples);
+ return AVERROR_INVALIDDATA;
+ }
+
+ if (frame_flags & 0x80) {
+ avctx->sample_fmt = AV_SAMPLE_FMT_FLTP;
+ } else if ((frame_flags & 0x03) <= 1) {
+ avctx->sample_fmt = AV_SAMPLE_FMT_S16P;
+ } else {
+ avctx->sample_fmt = AV_SAMPLE_FMT_S32P;
+ avctx->bits_per_raw_sample = ((frame_flags & 0x03) + 1) << 3;
+ }
+
+ while (buf_size > 0) {
+ if (buf_size <= WV_HEADER_SIZE)
+ break;
+ frame_size = AV_RL32(buf + 4) - 12;
+ buf += 20;
+ buf_size -= 20;
+ 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 ((ret = wavpack_decode_block(avctx, s->block,
+ frame, buf, frame_size)) < 0) {
+ wavpack_decode_flush(avctx);
+ return ret;
}
+ s->block++;
+ buf += frame_size;
+ buf_size -= frame_size;
}
- *data_size = samplecount * 2;
- return buf_size;
+ if (s->ch_offset != avctx->channels) {
+ av_log(avctx, AV_LOG_ERROR, "Not enough channels coded in a packet.\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ *got_frame_ptr = 1;
+
+ return avpkt->size;
}
-AVCodec wavpack_decoder = {
- "wavpack",
- CODEC_TYPE_AUDIO,
- CODEC_ID_WAVPACK,
- sizeof(WavpackContext),
- wavpack_decode_init,
- NULL,
- wavpack_decode_close,
- wavpack_decode_frame,
+AVCodec ff_wavpack_decoder = {
+ .name = "wavpack",
+ .long_name = NULL_IF_CONFIG_SMALL("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 = AV_CODEC_CAP_DR1,
};
projects / ffmpeg / blobdiff