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| author | Rostislav Pehlivanov <rpehlivanov@ob-encoder.com> | 2016-06-23 18:06:56 +0100 |
|---|---|---|
| committer | Rostislav Pehlivanov <atomnuker@gmail.com> | 2016-07-11 23:30:11 +0100 |
| commit | 80721cc1ff1f1c8c460c136184ed6416a73b4bfd (patch) | |
| tree | ff11e24dd41ac6254ccd6a54e6c3ceb1d3781875 /libavcodec/diracdsp.c | |
| parent | 244d22452c7d40891627e5f7e376558d6b5d8582 (diff) | |
| download | ffmpeg-80721cc1ff1f1c8c460c136184ed6416a73b4bfd.tar.gz | |
diracdsp: add dequantization SIMD
Currently unused, to be used in the following commits.
Signed-off-by: Rostislav Pehlivanov <rpehlivanov@obe.tv>
Diffstat (limited to 'libavcodec/diracdsp.c')
| -rw-r--r-- | libavcodec/diracdsp.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/libavcodec/diracdsp.c b/libavcodec/diracdsp.c index ab8d1497f7..cd1209e209 100644 --- a/libavcodec/diracdsp.c +++ b/libavcodec/diracdsp.c @@ -189,6 +189,27 @@ static void add_rect_clamped_c(uint8_t *dst, const uint16_t *src, int stride, } } +#define DEQUANT_SUBBAND(PX) \ +static void dequant_subband_ ## PX ## _c(uint8_t *src, uint8_t *dst, ptrdiff_t stride, \ + const int qf, const int qs, int tot_v, int tot_h) \ +{ \ + int i, y; \ + for (y = 0; y < tot_v; y++) { \ + PX c, sign, *src_r = (PX *)src, *dst_r = (PX *)dst; \ + for (i = 0; i < tot_h; i++) { \ + c = *src_r++; \ + sign = FFSIGN(c)*(!!c); \ + c = (FFABS(c)*qf + qs) >> 2; \ + *dst_r++ = c*sign; \ + } \ + src += tot_h << (sizeof(PX) >> 1); \ + dst += stride; \ + } \ +} + +DEQUANT_SUBBAND(int16_t) +DEQUANT_SUBBAND(int32_t) + #define PIXFUNC(PFX, WIDTH) \ c->PFX ## _dirac_pixels_tab[WIDTH>>4][0] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _c; \ c->PFX ## _dirac_pixels_tab[WIDTH>>4][1] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _l2_c; \ @@ -214,6 +235,9 @@ av_cold void ff_diracdsp_init(DiracDSPContext *c) c->biweight_dirac_pixels_tab[1] = biweight_dirac_pixels16_c; c->biweight_dirac_pixels_tab[2] = biweight_dirac_pixels32_c; + c->dequant_subband[0] = c->dequant_subband[2] = dequant_subband_int16_t_c; + c->dequant_subband[1] = c->dequant_subband[3] = dequant_subband_int32_t_c; + PIXFUNC(put, 8); PIXFUNC(put, 16); PIXFUNC(put, 32); |