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libswscale/ppc: VSX-optimize 9-16 bit yuv2planeX
./ffmpeg_g -f rawvideo -pix_fmt rgb24 -s hd1080 -i /dev/zero -pix_fmt yuv420p16be \ -s 1920x1728 -f null -vframes 100 -v error -nostats - 9-14 bit funcs get about 6x speedup, 16-bit gets about 15x. Fate passes, each format tested with an image to video conversion. Only POWER8 includes 32-bit vector multiplies, so POWER7 is locked out of the 16-bit function. This includes the vec_mulo/mule functions too, not just vmuluwm. With TIMER_REPORT skips disabled: yuv420p9le 12412 UNITS in planarX, 131072 runs, 0 skips 73136 UNITS in planarX, 131072 runs, 0 skips yuv420p9be 12481 UNITS in planarX, 131072 runs, 0 skips 73410 UNITS in planarX, 131072 runs, 0 skips yuv420p10le 12322 UNITS in planarX, 131072 runs, 0 skips 72546 UNITS in planarX, 131072 runs, 0 skips yuv420p10be 12291 UNITS in planarX, 131072 runs, 0 skips 72935 UNITS in planarX, 131072 runs, 0 skips yuv420p12le 12316 UNITS in planarX, 131072 runs, 0 skips 72708 UNITS in planarX, 131072 runs, 0 skips yuv420p12be 12319 UNITS in planarX, 131072 runs, 0 skips 72577 UNITS in planarX, 131072 runs, 0 skips yuv420p14le 12259 UNITS in planarX, 131072 runs, 0 skips 72516 UNITS in planarX, 131072 runs, 0 skips yuv420p14be 12440 UNITS in planarX, 131072 runs, 0 skips 72962 UNITS in planarX, 131072 runs, 0 skips yuv420p16le 10548 UNITS in planarX, 131072 runs, 0 skips 73429 UNITS in planarX, 131072 runs, 0 skips yuv420p16be 10634 UNITS in planarX, 131072 runs, 0 skips 150959 UNITS in planarX, 131072 runs, 0 skips Signed-off-by: Lauri Kasanen <cand@gmx.com>
This commit is contained in:
Lauri Kasanen
@@ -21,7 +21,7 @@
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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static void FUNC(yuv2planeX_16)(const int16_t *filter, int filterSize,
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static void FUNC(yuv2planeX_8_16)(const int16_t *filter, int filterSize,
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const int16_t **src, uint8_t *dest,
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const uint8_t *dither, int offset, int x)
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{
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@@ -88,7 +88,7 @@ static void FUNC(yuv2planeX)(const int16_t *filter, int filterSize,
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yuv2planeX_u(filter, filterSize, src, dest, dst_u, dither, offset, 0);
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for (i = dst_u; i < dstW - 15; i += 16)
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FUNC(yuv2planeX_16)(filter, filterSize, src, dest + i, dither,
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FUNC(yuv2planeX_8_16)(filter, filterSize, src, dest + i, dither,
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offset, i);
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yuv2planeX_u(filter, filterSize, src, dest, dstW, dither, offset, i);
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@@ -83,6 +83,8 @@
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#include "swscale_ppc_template.c"
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#undef FUNC
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#undef vzero
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#endif /* !HAVE_BIGENDIAN */
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static void yuv2plane1_8_u(const int16_t *src, uint8_t *dest, int dstW,
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@@ -180,6 +182,76 @@ static void yuv2plane1_nbps_vsx(const int16_t *src, uint16_t *dest, int dstW,
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yuv2plane1_nbps_u(src, dest, dstW, big_endian, output_bits, i);
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}
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static void yuv2planeX_nbps_u(const int16_t *filter, int filterSize,
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const int16_t **src, uint16_t *dest, int dstW,
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int big_endian, int output_bits, int start)
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{
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int i;
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int shift = 11 + 16 - output_bits;
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for (i = start; i < dstW; i++) {
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int val = 1 << (shift - 1);
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int j;
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for (j = 0; j < filterSize; j++)
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val += src[j][i] * filter[j];
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output_pixel(&dest[i], val);
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}
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}
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static void yuv2planeX_nbps_vsx(const int16_t *filter, int filterSize,
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const int16_t **src, uint16_t *dest, int dstW,
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int big_endian, int output_bits)
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{
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const int dst_u = -(uintptr_t)dest & 7;
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const int shift = 11 + 16 - output_bits;
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const int add = (1 << (shift - 1));
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const int clip = (1 << output_bits) - 1;
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const uint16_t swap = big_endian ? 8 : 0;
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const vector uint32_t vadd = (vector uint32_t) {add, add, add, add};
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const vector uint32_t vshift = (vector uint32_t) {shift, shift, shift, shift};
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const vector uint16_t vswap = (vector uint16_t) {swap, swap, swap, swap, swap, swap, swap, swap};
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const vector uint16_t vlargest = (vector uint16_t) {clip, clip, clip, clip, clip, clip, clip, clip};
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const vector int16_t vzero = vec_splat_s16(0);
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const vector uint8_t vperm = (vector uint8_t) {0, 1, 8, 9, 2, 3, 10, 11, 4, 5, 12, 13, 6, 7, 14, 15};
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vector int16_t vfilter[MAX_FILTER_SIZE], vin;
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vector uint16_t v;
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vector uint32_t vleft, vright, vtmp;
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int i, j;
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for (i = 0; i < filterSize; i++) {
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vfilter[i] = (vector int16_t) {filter[i], filter[i], filter[i], filter[i],
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filter[i], filter[i], filter[i], filter[i]};
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}
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yuv2planeX_nbps_u(filter, filterSize, src, dest, dst_u, big_endian, output_bits, 0);
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for (i = dst_u; i < dstW - 7; i += 8) {
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vleft = vright = vadd;
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for (j = 0; j < filterSize; j++) {
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vin = vec_vsx_ld(0, &src[j][i]);
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vtmp = (vector uint32_t) vec_mule(vin, vfilter[j]);
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vleft = vec_add(vleft, vtmp);
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vtmp = (vector uint32_t) vec_mulo(vin, vfilter[j]);
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vright = vec_add(vright, vtmp);
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}
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vleft = vec_sra(vleft, vshift);
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vright = vec_sra(vright, vshift);
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v = vec_packsu(vleft, vright);
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v = (vector uint16_t) vec_max((vector int16_t) v, vzero);
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v = vec_min(v, vlargest);
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v = vec_rl(v, vswap);
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v = vec_perm(v, v, vperm);
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vec_st(v, 0, &dest[i]);
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}
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yuv2planeX_nbps_u(filter, filterSize, src, dest, dstW, big_endian, output_bits, i);
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}
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#undef output_pixel
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#define output_pixel(pos, val, bias, signedness) \
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@@ -234,7 +306,88 @@ static void yuv2plane1_16_vsx(const int32_t *src, uint16_t *dest, int dstW,
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yuv2plane1_16_u(src, dest, dstW, big_endian, output_bits, i);
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}
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#if HAVE_POWER8
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static void yuv2planeX_16_u(const int16_t *filter, int filterSize,
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const int32_t **src, uint16_t *dest, int dstW,
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int big_endian, int output_bits, int start)
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{
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int i;
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int shift = 15;
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for (i = start; i < dstW; i++) {
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int val = 1 << (shift - 1);
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int j;
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/* range of val is [0,0x7FFFFFFF], so 31 bits, but with lanczos/spline
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* filters (or anything with negative coeffs, the range can be slightly
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* wider in both directions. To account for this overflow, we subtract
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* a constant so it always fits in the signed range (assuming a
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* reasonable filterSize), and re-add that at the end. */
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val -= 0x40000000;
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for (j = 0; j < filterSize; j++)
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val += src[j][i] * (unsigned)filter[j];
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output_pixel(&dest[i], val, 0x8000, int);
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}
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}
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static void yuv2planeX_16_vsx(const int16_t *filter, int filterSize,
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const int32_t **src, uint16_t *dest, int dstW,
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int big_endian, int output_bits)
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{
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const int dst_u = -(uintptr_t)dest & 7;
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const int shift = 15;
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const int bias = 0x8000;
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const int add = (1 << (shift - 1)) - 0x40000000;
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const uint16_t swap = big_endian ? 8 : 0;
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const vector uint32_t vadd = (vector uint32_t) {add, add, add, add};
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const vector uint32_t vshift = (vector uint32_t) {shift, shift, shift, shift};
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const vector uint16_t vswap = (vector uint16_t) {swap, swap, swap, swap, swap, swap, swap, swap};
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const vector uint16_t vbias = (vector uint16_t) {bias, bias, bias, bias, bias, bias, bias, bias};
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vector int32_t vfilter[MAX_FILTER_SIZE];
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vector uint16_t v;
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vector uint32_t vleft, vright, vtmp;
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vector int32_t vin32l, vin32r;
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int i, j;
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for (i = 0; i < filterSize; i++) {
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vfilter[i] = (vector int32_t) {filter[i], filter[i], filter[i], filter[i]};
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}
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yuv2planeX_16_u(filter, filterSize, src, dest, dst_u, big_endian, output_bits, 0);
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for (i = dst_u; i < dstW - 7; i += 8) {
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vleft = vright = vadd;
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for (j = 0; j < filterSize; j++) {
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vin32l = vec_vsx_ld(0, &src[j][i]);
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vin32r = vec_vsx_ld(0, &src[j][i + 4]);
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vtmp = (vector uint32_t) vec_mul(vin32l, vfilter[j]);
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vleft = vec_add(vleft, vtmp);
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vtmp = (vector uint32_t) vec_mul(vin32r, vfilter[j]);
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vright = vec_add(vright, vtmp);
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}
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vleft = vec_sra(vleft, vshift);
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vright = vec_sra(vright, vshift);
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v = (vector uint16_t) vec_packs((vector int32_t) vleft, (vector int32_t) vright);
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v = vec_add(v, vbias);
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v = vec_rl(v, vswap);
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vec_st(v, 0, &dest[i]);
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}
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yuv2planeX_16_u(filter, filterSize, src, dest, dstW, big_endian, output_bits, i);
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}
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#endif /* HAVE_POWER8 */
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#define yuv2NBPS(bits, BE_LE, is_be, template_size, typeX_t) \
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yuv2NBPS1(bits, BE_LE, is_be, template_size, typeX_t) \
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yuv2NBPSX(bits, BE_LE, is_be, template_size, typeX_t)
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#define yuv2NBPS1(bits, BE_LE, is_be, template_size, typeX_t) \
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static void yuv2plane1_ ## bits ## BE_LE ## _vsx(const int16_t *src, \
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uint8_t *dest, int dstW, \
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const uint8_t *dither, int offset) \
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@@ -243,6 +396,16 @@ static void yuv2plane1_ ## bits ## BE_LE ## _vsx(const int16_t *src, \
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(uint16_t *) dest, dstW, is_be, bits); \
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}
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#define yuv2NBPSX(bits, BE_LE, is_be, template_size, typeX_t) \
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static void yuv2planeX_ ## bits ## BE_LE ## _vsx(const int16_t *filter, int filterSize, \
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const int16_t **src, uint8_t *dest, int dstW, \
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const uint8_t *dither, int offset)\
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{ \
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yuv2planeX_## template_size ## _vsx(filter, \
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filterSize, (const typeX_t **) src, \
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(uint16_t *) dest, dstW, is_be, bits); \
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}
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yuv2NBPS( 9, BE, 1, nbps, int16_t)
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yuv2NBPS( 9, LE, 0, nbps, int16_t)
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yuv2NBPS(10, BE, 1, nbps, int16_t)
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@@ -251,8 +414,13 @@ yuv2NBPS(12, BE, 1, nbps, int16_t)
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yuv2NBPS(12, LE, 0, nbps, int16_t)
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yuv2NBPS(14, BE, 1, nbps, int16_t)
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yuv2NBPS(14, LE, 0, nbps, int16_t)
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yuv2NBPS(16, BE, 1, 16, int32_t)
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yuv2NBPS(16, LE, 0, 16, int32_t)
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yuv2NBPS1(16, BE, 1, 16, int32_t)
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yuv2NBPS1(16, LE, 0, 16, int32_t)
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#if HAVE_POWER8
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yuv2NBPSX(16, BE, 1, 16, int32_t)
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yuv2NBPSX(16, LE, 0, 16, int32_t)
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#endif
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#endif /* !HAVE_BIGENDIAN */
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@@ -262,8 +430,9 @@ av_cold void ff_sws_init_swscale_vsx(SwsContext *c)
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{
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#if HAVE_VSX
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enum AVPixelFormat dstFormat = c->dstFormat;
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const int cpu_flags = av_get_cpu_flags();
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if (!(av_get_cpu_flags() & AV_CPU_FLAG_VSX))
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if (!(cpu_flags & AV_CPU_FLAG_VSX))
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return;
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#if !HAVE_BIGENDIAN
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@@ -286,20 +455,29 @@ av_cold void ff_sws_init_swscale_vsx(SwsContext *c)
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#if !HAVE_BIGENDIAN
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case 9:
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c->yuv2plane1 = isBE(dstFormat) ? yuv2plane1_9BE_vsx : yuv2plane1_9LE_vsx;
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c->yuv2planeX = isBE(dstFormat) ? yuv2planeX_9BE_vsx : yuv2planeX_9LE_vsx;
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break;
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case 10:
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c->yuv2plane1 = isBE(dstFormat) ? yuv2plane1_10BE_vsx : yuv2plane1_10LE_vsx;
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c->yuv2planeX = isBE(dstFormat) ? yuv2planeX_10BE_vsx : yuv2planeX_10LE_vsx;
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break;
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case 12:
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c->yuv2plane1 = isBE(dstFormat) ? yuv2plane1_12BE_vsx : yuv2plane1_12LE_vsx;
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c->yuv2planeX = isBE(dstFormat) ? yuv2planeX_12BE_vsx : yuv2planeX_12LE_vsx;
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break;
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case 14:
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c->yuv2plane1 = isBE(dstFormat) ? yuv2plane1_14BE_vsx : yuv2plane1_14LE_vsx;
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c->yuv2planeX = isBE(dstFormat) ? yuv2planeX_14BE_vsx : yuv2planeX_14LE_vsx;
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break;
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case 16:
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c->yuv2plane1 = isBE(dstFormat) ? yuv2plane1_16BE_vsx : yuv2plane1_16LE_vsx;
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#if HAVE_POWER8
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if (cpu_flags & AV_CPU_FLAG_POWER8) {
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c->yuv2planeX = isBE(dstFormat) ? yuv2planeX_16BE_vsx : yuv2planeX_16LE_vsx;
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}
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#endif /* HAVE_POWER8 */
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break;
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#endif
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#endif /* !HAVE_BIGENDIAN */
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}
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}
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#endif /* HAVE_VSX */
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