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Merge decoding functions for all bitdepths in WavPack decoder

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Originally committed as revision 18675 to svn://svn.ffmpeg.org/ffmpeg/trunk
release/0.6
Kostya Shishkov 16 years ago
parent 68f8d33bec
commit 29ee635503
1 changed files with 52 additions and 146 deletions
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  1. 198
      libavcodec/wavpack.c

198
libavcodec/wavpack.c
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@ -337,13 +337,15 @@ static int wv_get_value(WavpackContext *ctx, GetBitContext *gb, int channel, int
return sign ? ~ret : ret;
}
static int wv_unpack_stereo(WavpackContext *s, GetBitContext *gb, int16_t *dst)
static inline int wv_unpack_stereo(WavpackContext *s, GetBitContext *gb, void *dst, const int hires)
{
int i, j, count = 0;
int last, t;
int A, B, L, L2, R, R2, bit;
int pos = 0;
uint32_t crc = 0xFFFFFFFF;
int16_t *dst16 = dst;
int32_t *dst32 = dst;
s->one = s->zero = s->zeroes = 0;
do{
@ -371,148 +373,36 @@ static int wv_unpack_stereo(WavpackContext *s, GetBitContext *gb, int16_t *dst)
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;
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);
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);
UPDATE_WEIGHT_CLIP(s->decorr[i].weightB, s->decorr[i].delta, L2, R);
R = R2;
s->decorr[i].samplesA[0] = R;
}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;
}
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;
bit = (L & s->and) | s->or;
*dst++ = (((L + bit) << s->shift) - bit) << s->post_shift;
bit = (R & s->and) | s->or;
*dst++ = (((R + bit) << s->shift) - bit) << s->post_shift;
count++;
}while(!last && count < s->samples);
if(crc != s->CRC){
av_log(s->avctx, AV_LOG_ERROR, "CRC error\n");
return -1;
}
return count * 2;
}
static int wv_unpack_mono(WavpackContext *s, GetBitContext *gb, int16_t *dst)
{
int i, j, count = 0;
int last, t;
int A, S, T, bit;
int pos = 0;
uint32_t crc = 0xFFFFFFFF;
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;
}
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) << s->post_shift;
count++;
}while(!last && count < s->samples);
if(crc != s->CRC){
av_log(s->avctx, AV_LOG_ERROR, "CRC error\n");
return -1;
}
return count;
}
static int wv_unpack_stereo_hires(WavpackContext *s, GetBitContext *gb, int32_t *dst)
{
int i, j, count = 0;
int last, t;
int A, B, L, L2, R, R2, bit;
int pos = 0;
uint32_t crc = 0xFFFFFFFF;
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;
j = 0;
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;
if(hires){
L2 = L + ((s->decorr[i].weightA * (int64_t)A + 512) >> 10);
R2 = R + ((s->decorr[i].weightB * (int64_t)B + 512) >> 10);
}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);
}
L2 = L + ((s->decorr[i].weightA * (int64_t)A + 512) >> 10);
R2 = R + ((s->decorr[i].weightB * (int64_t)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 * (int64_t)s->decorr[i].samplesA[0] + 512) >> 10);
if(hires)
L2 = L + ((s->decorr[i].weightA * (int64_t)s->decorr[i].samplesA[0] + 512) >> 10);
else
L2 = L + ((s->decorr[i].weightA * s->decorr[i].samplesA[0] + 512) >> 10);
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 * (int64_t)L2 + 512) >> 10);
if(hires)
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{
R2 = R + ((s->decorr[i].weightB * (int64_t)s->decorr[i].samplesB[0] + 512) >> 10);
if(hires)
R2 = R + ((s->decorr[i].weightB * (int64_t)s->decorr[i].samplesB[0] + 512) >> 10);
else
R2 = R + ((s->decorr[i].weightB * s->decorr[i].samplesB[0] + 512) >> 10);
UPDATE_WEIGHT_CLIP(s->decorr[i].weightB, s->decorr[i].delta, s->decorr[i].samplesB[0], R);
R = R2;
@ -521,7 +411,10 @@ static int wv_unpack_stereo_hires(WavpackContext *s, GetBitContext *gb, int32_t
s->decorr[i].samplesA[0] = R;
}
L2 = L + ((s->decorr[i].weightA * (int64_t)R2 + 512) >> 10);
if(hires)
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;
@ -532,9 +425,15 @@ static int wv_unpack_stereo_hires(WavpackContext *s, GetBitContext *gb, int32_t
L += (R -= (L >> 1));
crc = (crc * 3 + L) * 3 + R;
bit = (L & s->and) | s->or;
*dst++ = (((L + bit) << s->shift) - bit) << s->post_shift;
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;
*dst++ = (((R + bit) << s->shift) - bit) << s->post_shift;
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);
@ -545,13 +444,15 @@ static int wv_unpack_stereo_hires(WavpackContext *s, GetBitContext *gb, int32_t
return count * 2;
}
static int wv_unpack_mono_hires(WavpackContext *s, GetBitContext *gb, int32_t *dst)
static inline int wv_unpack_mono(WavpackContext *s, GetBitContext *gb, void *dst, const int hires)
{
int i, j, count = 0;
int last, t;
int A, S, T, bit;
int pos = 0;
uint32_t crc = 0xFFFFFFFF;
int16_t *dst16 = dst;
int32_t *dst32 = dst;
s->one = s->zero = s->zeroes = 0;
do{
@ -571,14 +472,20 @@ static int wv_unpack_mono_hires(WavpackContext *s, GetBitContext *gb, int32_t *d
A = s->decorr[i].samplesA[pos];
j = (pos + t) & 7;
}
S = T + ((s->decorr[i].weightA * (int64_t)A + 512) >> 10);
if(hires)
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) << s->post_shift;
if(hires)
*dst32++ = (((S + bit) << s->shift) - bit) << s->post_shift;
else
*dst16++ = (((S + bit) << s->shift) - bit) << s->post_shift;
count++;
}while(!last && count < s->samples);
@ -611,8 +518,7 @@ static int wavpack_decode_frame(AVCodecContext *avctx,
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
WavpackContext *s = avctx->priv_data;
int16_t *samples = data;
int32_t *samples32 = data;
void *samples = data;
int samplecount;
int got_terms = 0, got_weights = 0, got_samples = 0, got_entropy = 0, got_bs = 0;
int got_hybrid = 0;
@ -836,17 +742,17 @@ static int wavpack_decode_frame(AVCodecContext *avctx,
if(s->stereo_in){
if(bpp == 2)
samplecount = wv_unpack_stereo(s, &s->gb, samples);
samplecount = wv_unpack_stereo(s, &s->gb, samples, 0);
else
samplecount = wv_unpack_stereo_hires(s, &s->gb, samples32);
samplecount = wv_unpack_stereo(s, &s->gb, samples, 1);
}else{
if(bpp == 2)
samplecount = wv_unpack_mono(s, &s->gb, samples);
samplecount = wv_unpack_mono(s, &s->gb, samples, 0);
else
samplecount = wv_unpack_mono_hires(s, &s->gb, samples32);
samplecount = wv_unpack_mono(s, &s->gb, samples, 1);
if(s->stereo && bpp == 2){
int16_t *dst = samples + samplecount * 2;
int16_t *src = samples + samplecount;
int16_t *dst = (int16_t*)samples + samplecount * 2;
int16_t *src = (int16_t*)samples + samplecount;
int cnt = samplecount;
while(cnt--){
*--dst = *--src;
@ -854,8 +760,8 @@ static int wavpack_decode_frame(AVCodecContext *avctx,
}
samplecount *= 2;
}else if(s->stereo){ //32-bit output
int32_t *dst = samples32 + samplecount * 2;
int32_t *src = samples32 + samplecount;
int32_t *dst = (int32_t*)samples + samplecount * 2;
int32_t *src = (int32_t*)samples + samplecount;
int cnt = samplecount;
while(cnt--){
*--dst = *--src;

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