diff options
author | Lauri Kasanen <cand@gmx.com> | 2019-04-30 13:21:28 +0300 |
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committer | Lauri Kasanen <cand@gmx.com> | 2019-05-07 10:08:16 +0300 |
commit | 9456adc223778df26abab14f0f0594d55b2679b4 (patch) | |
tree | 6f9e0dcc6e0430b6b62fa4fd0ba43899393e29c6 /libswscale/ppc | |
parent | 5b318ce68df6cb4939b0be68e22853621e1e3aab (diff) | |
download | ffmpeg-9456adc223778df26abab14f0f0594d55b2679b4.tar.gz |
swscale/ppc: VSX-optimize hScale8To19
./ffmpeg -f lavfi -i yuvtestsrc=duration=1:size=1200x1440 \
-s 2400x720 -f rawvideo -y -vframes 5 -pix_fmt yuv420p16le -nostats test.raw
2.26 speedup (x86 SSE2 is 2.32):
23772 UNITS in hscale, 4096 runs, 0 skips
53862 UNITS in hscale, 4096 runs, 0 skips
Diffstat (limited to 'libswscale/ppc')
-rw-r--r-- | libswscale/ppc/swscale_vsx.c | 64 |
1 files changed, 63 insertions, 1 deletions
diff --git a/libswscale/ppc/swscale_vsx.c b/libswscale/ppc/swscale_vsx.c index 2e20ab388a..a82cf95ae4 100644 --- a/libswscale/ppc/swscale_vsx.c +++ b/libswscale/ppc/swscale_vsx.c @@ -1853,6 +1853,64 @@ static void hcscale_fast_vsx(SwsContext *c, int16_t *dst1, int16_t *dst2, #undef HCSCALE +static void hScale8To19_vsx(SwsContext *c, int16_t *_dst, int dstW, + const uint8_t *src, const int16_t *filter, + const int32_t *filterPos, int filterSize) +{ + int i, j; + int32_t *dst = (int32_t *) _dst; + vector int16_t vfilter, vin; + vector uint8_t vin8; + vector int32_t vout; + const vector uint8_t vzero = vec_splat_u8(0); + const vector uint8_t vunusedtab[8] = { + (vector uint8_t) {0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, + 0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf}, + (vector uint8_t) {0x0, 0x1, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, + 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10}, + (vector uint8_t) {0x0, 0x1, 0x2, 0x3, 0x10, 0x10, 0x10, 0x10, + 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10}, + (vector uint8_t) {0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x10, 0x10, + 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10}, + (vector uint8_t) {0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, + 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10}, + (vector uint8_t) {0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, + 0x8, 0x9, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10}, + (vector uint8_t) {0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, + 0x8, 0x9, 0xa, 0xb, 0x10, 0x10, 0x10, 0x10}, + (vector uint8_t) {0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, + 0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0x10, 0x10}, + }; + const vector uint8_t vunused = vunusedtab[filterSize % 8]; + + if (filterSize == 1) { + for (i = 0; i < dstW; i++) { + int srcPos = filterPos[i]; + int val = 0; + for (j = 0; j < filterSize; j++) { + val += ((int)src[srcPos + j]) * filter[filterSize * i + j]; + } + dst[i] = FFMIN(val >> 3, (1 << 19) - 1); // the cubic equation does overflow ... + } + } else { + for (i = 0; i < dstW; i++) { + const int srcPos = filterPos[i]; + vout = vec_splat_s32(0); + for (j = 0; j < filterSize; j += 8) { + vin8 = vec_vsx_ld(0, &src[srcPos + j]); + vin = (vector int16_t) vec_mergeh(vin8, vzero); + if (j + 8 > filterSize) // Remove the unused elements on the last round + vin = vec_perm(vin, (vector int16_t) vzero, vunused); + + vfilter = vec_vsx_ld(0, &filter[filterSize * i + j]); + vout = vec_msums(vin, vfilter, vout); + } + vout = vec_sums(vout, (vector int32_t) vzero); + dst[i] = FFMIN(vout[3] >> 3, (1 << 19) - 1); + } + } +} + #endif /* !HAVE_BIGENDIAN */ #endif /* HAVE_VSX */ @@ -1867,12 +1925,16 @@ av_cold void ff_sws_init_swscale_vsx(SwsContext *c) return; #if !HAVE_BIGENDIAN - if (c->srcBpc == 8 && c->dstBpc <= 14) { + if (c->srcBpc == 8) { + if (c->dstBpc <= 14) { c->hyScale = c->hcScale = hScale_real_vsx; if (c->flags & SWS_FAST_BILINEAR && c->dstW >= c->srcW && c->chrDstW >= c->chrSrcW) { c->hyscale_fast = hyscale_fast_vsx; c->hcscale_fast = hcscale_fast_vsx; } + } else { + c->hyScale = c->hcScale = hScale8To19_vsx; + } } if (!is16BPS(dstFormat) && !isNBPS(dstFormat) && dstFormat != AV_PIX_FMT_NV12 && dstFormat != AV_PIX_FMT_NV21 && |