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follow-up: clean up WebPRescalerXXX dsp function

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by removing redundant RFIX macros and using a plain-C fallback.

Change-Id: I52436c672bf20780b6fe3bcf43fe73e1abac10ff
This commit is contained in:
Pascal Massimino
2015-01-10 06:46:00 -08:00
committed by James Zern
parent f8740f0d6c
commit d581ba40ba
4 changed files with 19 additions and 38 deletions
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17
src/dsp/rescaler_mips32.c
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@ -114,9 +114,6 @@ static void ImportRow(WebPRescaler* const wrk,
}
}
#define RFIX 30
#define MULT_FIX(x, y) (((int64_t)(x) * (y) + (1 << (RFIX - 1))) >> RFIX)
static void ExportRow(WebPRescaler* const wrk, int x_out) {
if (wrk->y_accum <= 0) {
uint8_t* const dst = wrk->dst;
@ -172,22 +169,14 @@ static void ExportRow(WebPRescaler* const wrk, int x_out) {
: [temp2]"r"(temp2), [yscale]"r"(yscale), [temp8]"r"(temp8)
: "memory", "hi", "lo"
);
wrk->y_accum += wrk->y_add;
wrk->dst += wrk->dst_stride;
} else {
for (; x_out < x_out_max; ++x_out) {
const int frac = (int)MULT_FIX(frow[x_out], yscale);
const int v = (int)MULT_FIX(irow[x_out] - frac, wrk->fxy_scale);
dst[x_out] = (!(v & ~0xff)) ? v : (v < 0) ? 0 : 255;
irow[x_out] = frac; // new fractional start
}
WebPRescalerExportRowC(wrk, x_out);
}
wrk->y_accum += wrk->y_add;
wrk->dst += wrk->dst_stride;
}
}
#undef MULT_FIX
#undef RFIX
#endif // WEBP_USE_MIPS32
//------------------------------------------------------------------------------