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/*
* Copyright (C) 2004 the ffmpeg project
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file libavcodec/x86/vp3dsp_sse2.c
* SSE2-optimized functions cribbed from the original VP3 source code.
*/
#include "libavcodec/dsputil.h"
#include "dsputil_mmx.h"
DECLARE_ALIGNED_16(const uint16_t, ff_vp3_idct_data[7 * 8]) =
{
64277,64277,64277,64277,64277,64277,64277,64277,
60547,60547,60547,60547,60547,60547,60547,60547,
54491,54491,54491,54491,54491,54491,54491,54491,
46341,46341,46341,46341,46341,46341,46341,46341,
36410,36410,36410,36410,36410,36410,36410,36410,
25080,25080,25080,25080,25080,25080,25080,25080,
12785,12785,12785,12785,12785,12785,12785,12785
};
#define VP3_1D_IDCT_SSE2(ADD, SHIFT) \
"movdqa "I(3)", %%xmm2 \n\t" /* xmm2 = i3 */ \
"movdqa "C(3)", %%xmm6 \n\t" /* xmm6 = c3 */ \
"movdqa %%xmm2, %%xmm4 \n\t" /* xmm4 = i3 */ \
"movdqa "I(5)", %%xmm7 \n\t" /* xmm7 = i5 */ \
"pmulhw %%xmm6, %%xmm4 \n\t" /* xmm4 = c3 * i3 - i3 */ \
"movdqa "C(5)", %%xmm1 \n\t" /* xmm1 = c5 */ \
"pmulhw %%xmm7, %%xmm6 \n\t" /* xmm6 = c3 * i5 - i5 */ \
"movdqa %%xmm1, %%xmm5 \n\t" /* xmm5 = c5 */ \
"pmulhw %%xmm2, %%xmm1 \n\t" /* xmm1 = c5 * i3 - i3 */ \
"movdqa "I(1)", %%xmm3 \n\t" /* xmm3 = i1 */ \
"pmulhw %%xmm7, %%xmm5 \n\t" /* xmm5 = c5 * i5 - i5 */ \
"movdqa "C(1)", %%xmm0 \n\t" /* xmm0 = c1 */ \
"paddw %%xmm2, %%xmm4 \n\t" /* xmm4 = c3 * i3 */ \
"paddw %%xmm7, %%xmm6 \n\t" /* xmm6 = c3 * i5 */ \
"paddw %%xmm1, %%xmm2 \n\t" /* xmm2 = c5 * i3 */ \
"movdqa "I(7)", %%xmm1 \n\t" /* xmm1 = i7 */ \
"paddw %%xmm5, %%xmm7 \n\t" /* xmm7 = c5 * i5 */ \
"movdqa %%xmm0, %%xmm5 \n\t" /* xmm5 = c1 */ \
"pmulhw %%xmm3, %%xmm0 \n\t" /* xmm0 = c1 * i1 - i1 */ \
"paddsw %%xmm7, %%xmm4 \n\t" /* xmm4 = c3 * i3 + c5 * i5 = C */ \
"pmulhw %%xmm1, %%xmm5 \n\t" /* xmm5 = c1 * i7 - i7 */ \
"movdqa "C(7)", %%xmm7 \n\t" /* xmm7 = c7 */ \
"psubsw %%xmm2, %%xmm6 \n\t" /* xmm6 = c3 * i5 - c5 * i3 = D */ \
"paddw %%xmm3, %%xmm0 \n\t" /* xmm0 = c1 * i1 */ \
"pmulhw %%xmm7, %%xmm3 \n\t" /* xmm3 = c7 * i1 */ \
"movdqa "I(2)", %%xmm2 \n\t" /* xmm2 = i2 */ \
"pmulhw %%xmm1, %%xmm7 \n\t" /* xmm7 = c7 * i7 */ \
"paddw %%xmm1, %%xmm5 \n\t" /* xmm5 = c1 * i7 */ \
"movdqa %%xmm2, %%xmm1 \n\t" /* xmm1 = i2 */ \
"pmulhw "C(2)", %%xmm2 \n\t" /* xmm2 = i2 * c2 -i2 */ \
"psubsw %%xmm5, %%xmm3 \n\t" /* xmm3 = c7 * i1 - c1 * i7 = B */ \
"movdqa "I(6)", %%xmm5 \n\t" /* xmm5 = i6 */ \
"paddsw %%xmm7, %%xmm0 \n\t" /* xmm0 = c1 * i1 + c7 * i7 = A */ \
"movdqa %%xmm5, %%xmm7 \n\t" /* xmm7 = i6 */ \
"psubsw %%xmm4, %%xmm0 \n\t" /* xmm0 = A - C */ \
"pmulhw "C(2)", %%xmm5 \n\t" /* xmm5 = c2 * i6 - i6 */ \
"paddw %%xmm1, %%xmm2 \n\t" /* xmm2 = i2 * c2 */ \
"pmulhw "C(6)", %%xmm1 \n\t" /* xmm1 = c6 * i2 */ \
"paddsw %%xmm4, %%xmm4 \n\t" /* xmm4 = C + C */ \
"paddsw %%xmm0, %%xmm4 \n\t" /* xmm4 = A + C = C. */ \
"psubsw %%xmm6, %%xmm3 \n\t" /* xmm3 = B - D */ \
"paddw %%xmm7, %%xmm5 \n\t" /* xmm5 = c2 * i6 */ \
"paddsw %%xmm6, %%xmm6 \n\t" /* xmm6 = D + D */ \
"pmulhw "C(6)", %%xmm7 \n\t" /* xmm7 = c6 * i6 */ \
"paddsw %%xmm3, %%xmm6 \n\t" /* xmm6 = B + D = D. */ \
"movdqa %%xmm4, "I(1)" \n\t" /* Save C. at I(1) */ \
"psubsw %%xmm5, %%xmm1 \n\t" /* xmm1 = c6 * i2 - c2 * i6 = H */ \
"movdqa "C(4)", %%xmm4 \n\t" /* xmm4 = c4 */ \
"movdqa %%xmm3, %%xmm5 \n\t" /* xmm5 = B - D */ \
"pmulhw %%xmm4, %%xmm3 \n\t" /* xmm3 = ( c4 -1 ) * ( B - D ) */ \
"paddsw %%xmm2, %%xmm7 \n\t" /* xmm7 = c2 * i2 + c6 * i6 = G */ \
"movdqa %%xmm6, "I(2)" \n\t" /* Save D. at I(2) */ \
"movdqa %%xmm0, %%xmm2 \n\t" /* xmm2 = A - C */ \
"movdqa "I(0)", %%xmm6 \n\t" /* xmm6 = i0 */ \
"pmulhw %%xmm4, %%xmm0 \n\t" /* xmm0 = ( c4 - 1 ) * ( A - C ) = A. */ \
"paddw %%xmm3, %%xmm5 \n\t" /* xmm5 = c4 * ( B - D ) = B. */ \
"movdqa "I(4)", %%xmm3 \n\t" /* xmm3 = i4 */ \
"psubsw %%xmm1, %%xmm5 \n\t" /* xmm5 = B. - H = B.. */ \
"paddw %%xmm0, %%xmm2 \n\t" /* xmm2 = c4 * ( A - C) = A. */ \
"psubsw %%xmm3, %%xmm6 \n\t" /* xmm6 = i0 - i4 */ \
"movdqa %%xmm6, %%xmm0 \n\t" /* xmm0 = i0 - i4 */ \
"pmulhw %%xmm4, %%xmm6 \n\t" /* xmm6 = (c4 - 1) * (i0 - i4) = F */ \
"paddsw %%xmm3, %%xmm3 \n\t" /* xmm3 = i4 + i4 */ \
"paddsw %%xmm1, %%xmm1 \n\t" /* xmm1 = H + H */ \
"paddsw %%xmm0, %%xmm3 \n\t" /* xmm3 = i0 + i4 */ \
"paddsw %%xmm5, %%xmm1 \n\t" /* xmm1 = B. + H = H. */ \
"pmulhw %%xmm3, %%xmm4 \n\t" /* xmm4 = ( c4 - 1 ) * ( i0 + i4 ) */ \
"paddw %%xmm0, %%xmm6 \n\t" /* xmm6 = c4 * ( i0 - i4 ) */ \
"psubsw %%xmm2, %%xmm6 \n\t" /* xmm6 = F - A. = F. */ \
"paddsw %%xmm2, %%xmm2 \n\t" /* xmm2 = A. + A. */ \
"movdqa "I(1)", %%xmm0 \n\t" /* Load C. from I(1) */ \
"paddsw %%xmm6, %%xmm2 \n\t" /* xmm2 = F + A. = A.. */ \
"paddw %%xmm3, %%xmm4 \n\t" /* xmm4 = c4 * ( i0 + i4 ) = 3 */ \
"psubsw %%xmm1, %%xmm2 \n\t" /* xmm2 = A.. - H. = R2 */ \
ADD(%%xmm2) /* Adjust R2 and R1 before shifting */ \
"paddsw %%xmm1, %%xmm1 \n\t" /* xmm1 = H. + H. */ \
"paddsw %%xmm2, %%xmm1 \n\t" /* xmm1 = A.. + H. = R1 */ \
SHIFT(%%xmm2) /* xmm2 = op2 */ \
"psubsw %%xmm7, %%xmm4 \n\t" /* xmm4 = E - G = E. */ \
SHIFT(%%xmm1) /* xmm1 = op1 */ \
"movdqa "I(2)", %%xmm3 \n\t" /* Load D. from I(2) */ \
"paddsw %%xmm7, %%xmm7 \n\t" /* xmm7 = G + G */ \
"paddsw %%xmm4, %%xmm7 \n\t" /* xmm7 = E + G = G. */ \
"psubsw %%xmm3, %%xmm4 \n\t" /* xmm4 = E. - D. = R4 */ \
ADD(%%xmm4) /* Adjust R4 and R3 before shifting */ \
"paddsw %%xmm3, %%xmm3 \n\t" /* xmm3 = D. + D. */ \
"paddsw %%xmm4, %%xmm3 \n\t" /* xmm3 = E. + D. = R3 */ \
SHIFT(%%xmm4) /* xmm4 = op4 */ \
"psubsw %%xmm5, %%xmm6 \n\t" /* xmm6 = F. - B..= R6 */ \
SHIFT(%%xmm3) /* xmm3 = op3 */ \
ADD(%%xmm6) /* Adjust R6 and R5 before shifting */ \
"paddsw %%xmm5, %%xmm5 \n\t" /* xmm5 = B.. + B.. */ \
"paddsw %%xmm6, %%xmm5 \n\t" /* xmm5 = F. + B.. = R5 */ \
SHIFT(%%xmm6) /* xmm6 = op6 */ \
SHIFT(%%xmm5) /* xmm5 = op5 */ \
"psubsw %%xmm0, %%xmm7 \n\t" /* xmm7 = G. - C. = R7 */ \
ADD(%%xmm7) /* Adjust R7 and R0 before shifting */ \
"paddsw %%xmm0, %%xmm0 \n\t" /* xmm0 = C. + C. */ \
"paddsw %%xmm7, %%xmm0 \n\t" /* xmm0 = G. + C. */ \
SHIFT(%%xmm7) /* xmm7 = op7 */ \
SHIFT(%%xmm0) /* xmm0 = op0 */
#define PUT_BLOCK(r0, r1, r2, r3, r4, r5, r6, r7) \
"movdqa " #r0 ", " O(0) "\n\t" \
"movdqa " #r1 ", " O(1) "\n\t" \
"movdqa " #r2 ", " O(2) "\n\t" \
"movdqa " #r3 ", " O(3) "\n\t" \
"movdqa " #r4 ", " O(4) "\n\t" \
"movdqa " #r5 ", " O(5) "\n\t" \
"movdqa " #r6 ", " O(6) "\n\t" \
"movdqa " #r7 ", " O(7) "\n\t"
#define NOP(xmm)
#define SHIFT4(xmm) "psraw $4, "#xmm"\n\t"
#define ADD8(xmm) "paddsw %2, "#xmm"\n\t"
void ff_vp3_idct_sse2(int16_t *input_data)
{
#define I(x) AV_STRINGIFY(16*x)"(%0)"
#define O(x) I(x)
#define C(x) AV_STRINGIFY(16*(x-1))"(%1)"
__asm__ volatile (
VP3_1D_IDCT_SSE2(NOP, NOP)
TRANSPOSE8(%%xmm0, %%xmm1, %%xmm2, %%xmm3, %%xmm4, %%xmm5, %%xmm6, %%xmm7, (%0))
PUT_BLOCK(%%xmm0, %%xmm5, %%xmm7, %%xmm3, %%xmm6, %%xmm4, %%xmm2, %%xmm1)
VP3_1D_IDCT_SSE2(ADD8, SHIFT4)
PUT_BLOCK(%%xmm0, %%xmm1, %%xmm2, %%xmm3, %%xmm4, %%xmm5, %%xmm6, %%xmm7)
:: "r"(input_data), "r"(ff_vp3_idct_data), "m"(ff_pw_8)
);
}
void ff_vp3_idct_put_sse2(uint8_t *dest, int line_size, DCTELEM *block)
{
ff_vp3_idct_sse2(block);
put_signed_pixels_clamped_mmx(block, dest, line_size);
}
void ff_vp3_idct_add_sse2(uint8_t *dest, int line_size, DCTELEM *block)
{
ff_vp3_idct_sse2(block);
add_pixels_clamped_mmx(block, dest, line_size);
}
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