mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2025-01-13 21:28:01 +02:00
Merge decoding functions for all bitdepths in WavPack decoder
Originally committed as revision 18675 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Kostya Shishkov
parent
68f8d33bec
commit
29ee635503
@ -337,13 +337,15 @@ static int wv_get_value(WavpackContext *ctx, GetBitContext *gb, int channel, int
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return sign ? ~ret : ret;
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}
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static int wv_unpack_stereo(WavpackContext *s, GetBitContext *gb, int16_t *dst)
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static inline int wv_unpack_stereo(WavpackContext *s, GetBitContext *gb, void *dst, const int hires)
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{
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int i, j, count = 0;
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int last, t;
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int A, B, L, L2, R, R2, bit;
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int pos = 0;
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uint32_t crc = 0xFFFFFFFF;
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int16_t *dst16 = dst;
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int32_t *dst32 = dst;
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s->one = s->zero = s->zeroes = 0;
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do{
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@ -371,148 +373,36 @@ static int wv_unpack_stereo(WavpackContext *s, GetBitContext *gb, int16_t *dst)
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B = s->decorr[i].samplesB[pos];
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j = (pos + t) & 7;
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}
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L2 = L + ((s->decorr[i].weightA * A + 512) >> 10);
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R2 = R + ((s->decorr[i].weightB * B + 512) >> 10);
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if(A && L) s->decorr[i].weightA -= ((((L ^ A) >> 30) & 2) - 1) * s->decorr[i].delta;
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if(B && R) s->decorr[i].weightB -= ((((R ^ B) >> 30) & 2) - 1) * s->decorr[i].delta;
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s->decorr[i].samplesA[j] = L = L2;
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s->decorr[i].samplesB[j] = R = R2;
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}else if(t == -1){
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L2 = L + ((s->decorr[i].weightA * s->decorr[i].samplesA[0] + 512) >> 10);
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UPDATE_WEIGHT_CLIP(s->decorr[i].weightA, s->decorr[i].delta, s->decorr[i].samplesA[0], L);
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L = L2;
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R2 = R + ((s->decorr[i].weightB * L2 + 512) >> 10);
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UPDATE_WEIGHT_CLIP(s->decorr[i].weightB, s->decorr[i].delta, L2, R);
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R = R2;
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s->decorr[i].samplesA[0] = R;
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}else{
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R2 = R + ((s->decorr[i].weightB * s->decorr[i].samplesB[0] + 512) >> 10);
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UPDATE_WEIGHT_CLIP(s->decorr[i].weightB, s->decorr[i].delta, s->decorr[i].samplesB[0], R);
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R = R2;
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if(t == -3){
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R2 = s->decorr[i].samplesA[0];
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s->decorr[i].samplesA[0] = R;
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}
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L2 = L + ((s->decorr[i].weightA * R2 + 512) >> 10);
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UPDATE_WEIGHT_CLIP(s->decorr[i].weightA, s->decorr[i].delta, R2, L);
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L = L2;
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s->decorr[i].samplesB[0] = L;
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}
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}
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pos = (pos + 1) & 7;
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if(s->joint)
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L += (R -= (L >> 1));
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crc = (crc * 3 + L) * 3 + R;
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bit = (L & s->and) | s->or;
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*dst++ = (((L + bit) << s->shift) - bit) << s->post_shift;
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bit = (R & s->and) | s->or;
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*dst++ = (((R + bit) << s->shift) - bit) << s->post_shift;
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count++;
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}while(!last && count < s->samples);
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if(crc != s->CRC){
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av_log(s->avctx, AV_LOG_ERROR, "CRC error\n");
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return -1;
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}
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return count * 2;
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}
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static int wv_unpack_mono(WavpackContext *s, GetBitContext *gb, int16_t *dst)
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{
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int i, j, count = 0;
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int last, t;
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int A, S, T, bit;
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int pos = 0;
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uint32_t crc = 0xFFFFFFFF;
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s->one = s->zero = s->zeroes = 0;
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do{
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T = wv_get_value(s, gb, 0, &last);
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S = 0;
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if(last) break;
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for(i = 0; i < s->terms; i++){
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t = s->decorr[i].value;
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if(t > 8){
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if(t & 1)
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A = 2 * s->decorr[i].samplesA[0] - s->decorr[i].samplesA[1];
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else
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A = (3 * s->decorr[i].samplesA[0] - s->decorr[i].samplesA[1]) >> 1;
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s->decorr[i].samplesA[1] = s->decorr[i].samplesA[0];
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j = 0;
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}else{
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A = s->decorr[i].samplesA[pos];
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j = (pos + t) & 7;
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}
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S = T + ((s->decorr[i].weightA * A + 512) >> 10);
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if(A && T) s->decorr[i].weightA -= ((((T ^ A) >> 30) & 2) - 1) * s->decorr[i].delta;
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s->decorr[i].samplesA[j] = T = S;
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}
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pos = (pos + 1) & 7;
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crc = crc * 3 + S;
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bit = (S & s->and) | s->or;
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*dst++ = (((S + bit) << s->shift) - bit) << s->post_shift;
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count++;
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}while(!last && count < s->samples);
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if(crc != s->CRC){
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av_log(s->avctx, AV_LOG_ERROR, "CRC error\n");
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return -1;
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}
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return count;
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}
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static int wv_unpack_stereo_hires(WavpackContext *s, GetBitContext *gb, int32_t *dst)
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{
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int i, j, count = 0;
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int last, t;
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int A, B, L, L2, R, R2, bit;
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int pos = 0;
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uint32_t crc = 0xFFFFFFFF;
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s->one = s->zero = s->zeroes = 0;
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do{
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L = wv_get_value(s, gb, 0, &last);
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if(last) break;
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R = wv_get_value(s, gb, 1, &last);
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if(last) break;
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for(i = 0; i < s->terms; i++){
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t = s->decorr[i].value;
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j = 0;
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if(t > 0){
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if(t > 8){
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if(t & 1){
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A = 2 * s->decorr[i].samplesA[0] - s->decorr[i].samplesA[1];
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B = 2 * s->decorr[i].samplesB[0] - s->decorr[i].samplesB[1];
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}else{
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A = (3 * s->decorr[i].samplesA[0] - s->decorr[i].samplesA[1]) >> 1;
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B = (3 * s->decorr[i].samplesB[0] - s->decorr[i].samplesB[1]) >> 1;
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}
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s->decorr[i].samplesA[1] = s->decorr[i].samplesA[0];
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s->decorr[i].samplesB[1] = s->decorr[i].samplesB[0];
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j = 0;
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if(hires){
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L2 = L + ((s->decorr[i].weightA * (int64_t)A + 512) >> 10);
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R2 = R + ((s->decorr[i].weightB * (int64_t)B + 512) >> 10);
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}else{
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A = s->decorr[i].samplesA[pos];
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B = s->decorr[i].samplesB[pos];
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j = (pos + t) & 7;
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L2 = L + ((s->decorr[i].weightA * A + 512) >> 10);
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R2 = R + ((s->decorr[i].weightB * B + 512) >> 10);
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}
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L2 = L + ((s->decorr[i].weightA * (int64_t)A + 512) >> 10);
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R2 = R + ((s->decorr[i].weightB * (int64_t)B + 512) >> 10);
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if(A && L) s->decorr[i].weightA -= ((((L ^ A) >> 30) & 2) - 1) * s->decorr[i].delta;
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if(B && R) s->decorr[i].weightB -= ((((R ^ B) >> 30) & 2) - 1) * s->decorr[i].delta;
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s->decorr[i].samplesA[j] = L = L2;
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s->decorr[i].samplesB[j] = R = R2;
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}else if(t == -1){
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L2 = L + ((s->decorr[i].weightA * (int64_t)s->decorr[i].samplesA[0] + 512) >> 10);
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if(hires)
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L2 = L + ((s->decorr[i].weightA * (int64_t)s->decorr[i].samplesA[0] + 512) >> 10);
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else
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L2 = L + ((s->decorr[i].weightA * s->decorr[i].samplesA[0] + 512) >> 10);
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UPDATE_WEIGHT_CLIP(s->decorr[i].weightA, s->decorr[i].delta, s->decorr[i].samplesA[0], L);
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L = L2;
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R2 = R + ((s->decorr[i].weightB * (int64_t)L2 + 512) >> 10);
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if(hires)
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R2 = R + ((s->decorr[i].weightB * (int64_t)L2 + 512) >> 10);
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else
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R2 = R + ((s->decorr[i].weightB * L2 + 512) >> 10);
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UPDATE_WEIGHT_CLIP(s->decorr[i].weightB, s->decorr[i].delta, L2, R);
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R = R2;
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s->decorr[i].samplesA[0] = R;
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}else{
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R2 = R + ((s->decorr[i].weightB * (int64_t)s->decorr[i].samplesB[0] + 512) >> 10);
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if(hires)
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R2 = R + ((s->decorr[i].weightB * (int64_t)s->decorr[i].samplesB[0] + 512) >> 10);
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else
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R2 = R + ((s->decorr[i].weightB * s->decorr[i].samplesB[0] + 512) >> 10);
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UPDATE_WEIGHT_CLIP(s->decorr[i].weightB, s->decorr[i].delta, s->decorr[i].samplesB[0], R);
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R = R2;
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@ -521,7 +411,10 @@ static int wv_unpack_stereo_hires(WavpackContext *s, GetBitContext *gb, int32_t
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s->decorr[i].samplesA[0] = R;
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}
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L2 = L + ((s->decorr[i].weightA * (int64_t)R2 + 512) >> 10);
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if(hires)
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L2 = L + ((s->decorr[i].weightA * (int64_t)R2 + 512) >> 10);
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else
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L2 = L + ((s->decorr[i].weightA * R2 + 512) >> 10);
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UPDATE_WEIGHT_CLIP(s->decorr[i].weightA, s->decorr[i].delta, R2, L);
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L = L2;
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s->decorr[i].samplesB[0] = L;
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@ -532,9 +425,15 @@ static int wv_unpack_stereo_hires(WavpackContext *s, GetBitContext *gb, int32_t
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L += (R -= (L >> 1));
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crc = (crc * 3 + L) * 3 + R;
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bit = (L & s->and) | s->or;
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*dst++ = (((L + bit) << s->shift) - bit) << s->post_shift;
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if(hires)
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*dst32++ = (((L + bit) << s->shift) - bit) << s->post_shift;
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else
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*dst16++ = (((L + bit) << s->shift) - bit) << s->post_shift;
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bit = (R & s->and) | s->or;
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*dst++ = (((R + bit) << s->shift) - bit) << s->post_shift;
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if(hires)
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*dst32++ = (((R + bit) << s->shift) - bit) << s->post_shift;
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else
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*dst16++ = (((R + bit) << s->shift) - bit) << s->post_shift;
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count++;
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}while(!last && count < s->samples);
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@ -545,13 +444,15 @@ static int wv_unpack_stereo_hires(WavpackContext *s, GetBitContext *gb, int32_t
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return count * 2;
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}
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static int wv_unpack_mono_hires(WavpackContext *s, GetBitContext *gb, int32_t *dst)
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static inline int wv_unpack_mono(WavpackContext *s, GetBitContext *gb, void *dst, const int hires)
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{
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int i, j, count = 0;
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int last, t;
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int A, S, T, bit;
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int pos = 0;
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uint32_t crc = 0xFFFFFFFF;
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int16_t *dst16 = dst;
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int32_t *dst32 = dst;
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s->one = s->zero = s->zeroes = 0;
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do{
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@ -571,14 +472,20 @@ static int wv_unpack_mono_hires(WavpackContext *s, GetBitContext *gb, int32_t *d
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A = s->decorr[i].samplesA[pos];
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j = (pos + t) & 7;
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}
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S = T + ((s->decorr[i].weightA * (int64_t)A + 512) >> 10);
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if(hires)
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S = T + ((s->decorr[i].weightA * (int64_t)A + 512) >> 10);
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else
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S = T + ((s->decorr[i].weightA * A + 512) >> 10);
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if(A && T) s->decorr[i].weightA -= ((((T ^ A) >> 30) & 2) - 1) * s->decorr[i].delta;
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s->decorr[i].samplesA[j] = T = S;
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}
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pos = (pos + 1) & 7;
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crc = crc * 3 + S;
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bit = (S & s->and) | s->or;
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*dst++ = (((S + bit) << s->shift) - bit) << s->post_shift;
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if(hires)
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*dst32++ = (((S + bit) << s->shift) - bit) << s->post_shift;
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else
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*dst16++ = (((S + bit) << s->shift) - bit) << s->post_shift;
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count++;
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}while(!last && count < s->samples);
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@ -611,8 +518,7 @@ static int wavpack_decode_frame(AVCodecContext *avctx,
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const uint8_t *buf = avpkt->data;
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int buf_size = avpkt->size;
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WavpackContext *s = avctx->priv_data;
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int16_t *samples = data;
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int32_t *samples32 = data;
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void *samples = data;
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int samplecount;
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int got_terms = 0, got_weights = 0, got_samples = 0, got_entropy = 0, got_bs = 0;
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int got_hybrid = 0;
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@ -836,17 +742,17 @@ static int wavpack_decode_frame(AVCodecContext *avctx,
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if(s->stereo_in){
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if(bpp == 2)
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samplecount = wv_unpack_stereo(s, &s->gb, samples);
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samplecount = wv_unpack_stereo(s, &s->gb, samples, 0);
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else
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samplecount = wv_unpack_stereo_hires(s, &s->gb, samples32);
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samplecount = wv_unpack_stereo(s, &s->gb, samples, 1);
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}else{
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if(bpp == 2)
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samplecount = wv_unpack_mono(s, &s->gb, samples);
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samplecount = wv_unpack_mono(s, &s->gb, samples, 0);
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else
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samplecount = wv_unpack_mono_hires(s, &s->gb, samples32);
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samplecount = wv_unpack_mono(s, &s->gb, samples, 1);
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if(s->stereo && bpp == 2){
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int16_t *dst = samples + samplecount * 2;
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int16_t *src = samples + samplecount;
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int16_t *dst = (int16_t*)samples + samplecount * 2;
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int16_t *src = (int16_t*)samples + samplecount;
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int cnt = samplecount;
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while(cnt--){
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*--dst = *--src;
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@ -854,8 +760,8 @@ static int wavpack_decode_frame(AVCodecContext *avctx,
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}
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samplecount *= 2;
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}else if(s->stereo){ //32-bit output
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int32_t *dst = samples32 + samplecount * 2;
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int32_t *src = samples32 + samplecount;
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int32_t *dst = (int32_t*)samples + samplecount * 2;
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int32_t *src = (int32_t*)samples + samplecount;
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int cnt = samplecount;
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while(cnt--){
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*--dst = *--src;
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