#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
+
enum WP_ID_Flags{
WP_IDF_MASK = 0x1F,
WP_IDF_IGNORE = 0x20,
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 and, or, shift;
int post_shift;
int hybrid, hybrid_bitrate;
+ int float_flag;
+ int float_shift;
+ int float_max_exp;
WvChannel ch[2];
+ int samples_left;
+ int max_samples;
+ int pos;
+ SavedContext sc, extra_sc;
} WavpackContext;
// exponent table copied from WavPack source
return sign ? ~ret : ret;
}
-static inline int wv_unpack_stereo(WavpackContext *s, GetBitContext *gb, void *dst, const int hires)
+static inline int wv_get_value_integer(WavpackContext *s, uint32_t *crc, int S)
+{
+ int bit;
+
+ if(s->extra_bits){
+ S <<= s->extra_bits;
+
+ if(s->got_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;
+ return (((S + bit) << s->shift) - bit) << s->post_shift;
+}
+
+static float wv_get_value_float(WavpackContext *s, uint32_t *crc, int S)
+{
+ union {
+ float f;
+ uint32_t u;
+ } value;
+
+ 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(WavpackContext *s)
+{
+ s->pos = 0;
+ s->sc.crc = s->extra_sc.crc = 0xFFFFFFFF;
+}
+
+static inline int wv_unpack_stereo(WavpackContext *s, GetBitContext *gb, void *dst, 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;
- uint32_t crc_extra_bits = 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 = dst;
int32_t *dst32 = dst;
+ float *dstfl = dst;
- s->one = s->zero = s->zeroes = 0;
+ if(s->samples_left == s->samples)
+ s->one = s->zero = s->zeroes = 0;
do{
L = wv_get_value(s, gb, 0, &last);
if(last) break;
B = s->decorr[i].samplesB[pos];
j = (pos + t) & 7;
}
- if(hires){
+ if(type != 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{
s->decorr[i].samplesA[j] = L = L2;
s->decorr[i].samplesB[j] = R = R2;
}else if(t == -1){
- if(hires)
+ if(type != 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(hires)
+ if(type != SAMPLE_FMT_S16)
R2 = R + ((s->decorr[i].weightB * (int64_t)L2 + 512) >> 10);
else
R2 = R + ((s->decorr[i].weightB * L2 + 512) >> 10);
R = R2;
s->decorr[i].samplesA[0] = R;
}else{
- if(hires)
+ if(type != 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);
s->decorr[i].samplesA[0] = R;
}
- if(hires)
+ if(type != SAMPLE_FMT_S16)
L2 = L + ((s->decorr[i].weightA * (int64_t)R2 + 512) >> 10);
else
L2 = L + ((s->decorr[i].weightA * R2 + 512) >> 10);
if(s->joint)
L += (R -= (L >> 1));
crc = (crc * 3 + L) * 3 + R;
- 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);
- }
+ if(type == SAMPLE_FMT_FLT){
+ *dstfl++ = wv_get_value_float(s, &crc_extra_bits, L);
+ *dstfl++ = wv_get_value_float(s, &crc_extra_bits, R);
+ } else if(type == SAMPLE_FMT_S32){
+ *dst32++ = wv_get_value_integer(s, &crc_extra_bits, L);
+ *dst32++ = wv_get_value_integer(s, &crc_extra_bits, R);
+ } else {
+ *dst16++ = wv_get_value_integer(s, &crc_extra_bits, L);
+ *dst16++ = wv_get_value_integer(s, &crc_extra_bits, R);
}
- bit = (L & s->and) | s->or;
- if(hires)
- *dst32++ = (((L + bit) << s->shift) - bit) << s->post_shift;
- else
- *dst16++ = (((L + bit) << s->shift) - bit) << s->post_shift;
- bit = (R & s->and) | s->or;
- if(hires)
- *dst32++ = (((R + bit) << s->shift) - bit) << s->post_shift;
- else
- *dst16++ = (((R + bit) << s->shift) - bit) << s->post_shift;
count++;
- }while(!last && count < s->samples);
+ }while(!last && count < s->max_samples);
- if(crc != s->CRC){
- av_log(s->avctx, AV_LOG_ERROR, "CRC error\n");
- return -1;
- }
- 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;
+ s->samples_left -= count;
+ if(!s->samples_left){
+ if(crc != s->CRC){
+ av_log(s->avctx, AV_LOG_ERROR, "CRC error\n");
+ return -1;
+ }
+ 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;
+ }
+ wv_reset_saved_context(s);
+ }else{
+ s->pos = pos;
+ s->sc.crc = crc;
+ s->sc.bits_used = get_bits_count(&s->gb);
+ if(s->got_extra_bits){
+ s->extra_sc.crc = crc_extra_bits;
+ s->extra_sc.bits_used = get_bits_count(&s->gb_extra_bits);
+ }
}
return count * 2;
}
-static inline int wv_unpack_mono(WavpackContext *s, GetBitContext *gb, void *dst, const int hires)
+static inline int wv_unpack_mono(WavpackContext *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;
- uint32_t crc_extra_bits = 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;
+ if(s->samples_left == s->samples)
+ s->one = s->zero = s->zeroes = 0;
do{
T = wv_get_value(s, gb, 0, &last);
S = 0;
A = s->decorr[i].samplesA[pos];
j = (pos + t) & 7;
}
- if(hires)
+ if(type != SAMPLE_FMT_S16)
S = T + ((s->decorr[i].weightA * (int64_t)A + 512) >> 10);
else
S = T + ((s->decorr[i].weightA * A + 512) >> 10);
}
pos = (pos + 1) & 7;
crc = crc * 3 + S;
- 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);
- }
- }
- bit = (S & s->and) | s->or;
- if(hires)
- *dst32++ = (((S + bit) << s->shift) - bit) << s->post_shift;
+ if(type == SAMPLE_FMT_FLT)
+ *dstfl++ = wv_get_value_float(s, &crc_extra_bits, S);
+ else if(type == SAMPLE_FMT_S32)
+ *dst32++ = wv_get_value_integer(s, &crc_extra_bits, S);
else
- *dst16++ = (((S + bit) << s->shift) - bit) << s->post_shift;
+ *dst16++ = wv_get_value_integer(s, &crc_extra_bits, S);
count++;
}while(!last && count < s->samples);
- if(crc != s->CRC){
- av_log(s->avctx, AV_LOG_ERROR, "CRC error\n");
- return -1;
- }
- 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;
+ s->samples_left -= count;
+ if(!s->samples_left){
+ if(crc != s->CRC){
+ av_log(s->avctx, AV_LOG_ERROR, "CRC error\n");
+ return -1;
+ }
+ 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;
+ }
+ wv_reset_saved_context(s);
+ }else{
+ s->pos = pos;
+ s->sc.crc = crc;
+ s->sc.bits_used = get_bits_count(&s->gb);
+ if(s->got_extra_bits){
+ s->extra_sc.crc = crc_extra_bits;
+ s->extra_sc.bits_used = get_bits_count(&s->gb_extra_bits);
+ }
}
return count;
}
avctx->sample_fmt = SAMPLE_FMT_S32;
avctx->channel_layout = (avctx->channels==2) ? CH_LAYOUT_STEREO : CH_LAYOUT_MONO;
+ wv_reset_saved_context(s);
+
return 0;
}
WavpackContext *s = avctx->priv_data;
void *samples = data;
int samplecount;
- int got_terms = 0, got_weights = 0, got_samples = 0, got_entropy = 0, got_bs = 0;
+ int got_terms = 0, got_weights = 0, got_samples = 0, got_entropy = 0, got_bs = 0, got_float = 0;
int got_hybrid = 0;
const uint8_t* buf_end = buf + buf_size;
int i, j, id, size, ssize, weights, t;
return 0;
}
- 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(!s->samples_left){
+ 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;
+ }
s->samples = AV_RL32(buf); buf += 4;
if(!s->samples){
return buf_size;
}
s->frame_flags = AV_RL32(buf); buf += 4;
- if((s->frame_flags&0x03) <= 1){
+ if(s->frame_flags&0x80){
+ bpp = sizeof(float);
+ avctx->sample_fmt = SAMPLE_FMT_FLT;
+ } else if((s->frame_flags&0x03) <= 1){
bpp = 2;
avctx->sample_fmt = SAMPLE_FMT_S16;
} else {
s->post_shift = 8 * (bpp-1-(s->frame_flags&0x03)) + ((s->frame_flags >> 13) & 0x1f);
s->CRC = AV_RL32(buf); buf += 4;
- /* 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;
+ s->max_samples = *data_size / (bpp * avctx->channels);
+ s->max_samples = FFMIN(s->max_samples, s->samples);
+ if(s->samples_left > 0){
+ s->max_samples = FFMIN(s->max_samples, s->samples_left);
+ buf = buf_end;
}
// parse metadata blocks
}
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 - avpkt->data;
+ s->sc.size = size * 8;
init_get_bits(&s->gb, buf, size * 8);
s->data_size = size * 8;
buf += size;
buf += size;
continue;
}
+ s->extra_sc.offset = buf - avpkt->data;
+ 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;
}
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(!s->samples_left){
+ 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 == SAMPLE_FMT_FLT){
+ av_log(avctx, AV_LOG_ERROR, "Float information not found\n");
+ return -1;
+ }
+ if(s->got_extra_bits && avctx->sample_fmt != 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;
+ }
+ }
+ s->samples_left = s->samples;
+ }else{
+ init_get_bits(&s->gb, avpkt->data + s->sc.offset, s->sc.size);
+ skip_bits_long(&s->gb, s->sc.bits_used);
+ if(s->got_extra_bits){
+ init_get_bits(&s->gb_extra_bits, avpkt->data + s->extra_sc.offset,
+ s->extra_sc.size);
+ skip_bits_long(&s->gb_extra_bits, s->extra_sc.bits_used);
+ }
}
if(s->stereo_in){
- if(bpp == 2)
- samplecount = wv_unpack_stereo(s, &s->gb, samples, 0);
+ if(avctx->sample_fmt == SAMPLE_FMT_S16)
+ samplecount = wv_unpack_stereo(s, &s->gb, samples, SAMPLE_FMT_S16);
+ else if(avctx->sample_fmt == SAMPLE_FMT_S32)
+ samplecount = wv_unpack_stereo(s, &s->gb, samples, SAMPLE_FMT_S32);
else
- samplecount = wv_unpack_stereo(s, &s->gb, samples, 1);
+ samplecount = wv_unpack_stereo(s, &s->gb, samples, SAMPLE_FMT_FLT);
+
}else{
- if(bpp == 2)
- samplecount = wv_unpack_mono(s, &s->gb, samples, 0);
+ if(avctx->sample_fmt == SAMPLE_FMT_S16)
+ samplecount = wv_unpack_mono(s, &s->gb, samples, SAMPLE_FMT_S16);
+ else if(avctx->sample_fmt == SAMPLE_FMT_S32)
+ samplecount = wv_unpack_mono(s, &s->gb, samples, SAMPLE_FMT_S32);
else
- samplecount = wv_unpack_mono(s, &s->gb, samples, 1);
- if(s->stereo && bpp == 2){
+ samplecount = wv_unpack_mono(s, &s->gb, samples, SAMPLE_FMT_FLT);
+
+ if(s->stereo && avctx->sample_fmt == SAMPLE_FMT_S16){
int16_t *dst = (int16_t*)samples + samplecount * 2;
int16_t *src = (int16_t*)samples + samplecount;
int cnt = samplecount;
*--dst = *src;
}
samplecount *= 2;
- }else if(s->stereo){ //32-bit output
+ }else if(s->stereo && avctx->sample_fmt == SAMPLE_FMT_S32){
int32_t *dst = (int32_t*)samples + samplecount * 2;
int32_t *src = (int32_t*)samples + samplecount;
int cnt = samplecount;
*--dst = *src;
}
samplecount *= 2;
+ }else if(s->stereo){
+ float *dst = (float*)samples + samplecount * 2;
+ float *src = (float*)samples + samplecount;
+ int cnt = samplecount;
+ while(cnt--){
+ *--dst = *--src;
+ *--dst = *src;
+ }
+ samplecount *= 2;
}
}
*data_size = samplecount * bpp;
- return buf_size;
+ return s->samples_left > 0 ? 0 : buf_size;
}
AVCodec wavpack_decoder = {
NULL,
NULL,
wavpack_decode_frame,
+ .capabilities = CODEC_CAP_SUBFRAMES,
.long_name = NULL_IF_CONFIG_SMALL("WavPack"),
};
projects / ffmpeg / blobdiff