| /* |
| * Alpha optimized DSP utils |
| * Copyright (c) 2002 Falk Hueffner <falk@debian.org> |
| * |
| * 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 |
| */ |
| |
| #include "libavutil/attributes.h" |
| #include "libavcodec/dsputil.h" |
| #include "dsputil_alpha.h" |
| #include "asm.h" |
| |
| void (*put_pixels_clamped_axp_p)(const int16_t *block, uint8_t *pixels, |
| int line_size); |
| void (*add_pixels_clamped_axp_p)(const int16_t *block, uint8_t *pixels, |
| int line_size); |
| |
| #if 0 |
| /* These functions were the base for the optimized assembler routines, |
| and remain here for documentation purposes. */ |
| static void put_pixels_clamped_mvi(const int16_t *block, uint8_t *pixels, |
| ptrdiff_t line_size) |
| { |
| int i = 8; |
| uint64_t clampmask = zap(-1, 0xaa); /* 0x00ff00ff00ff00ff */ |
| |
| do { |
| uint64_t shorts0, shorts1; |
| |
| shorts0 = ldq(block); |
| shorts0 = maxsw4(shorts0, 0); |
| shorts0 = minsw4(shorts0, clampmask); |
| stl(pkwb(shorts0), pixels); |
| |
| shorts1 = ldq(block + 4); |
| shorts1 = maxsw4(shorts1, 0); |
| shorts1 = minsw4(shorts1, clampmask); |
| stl(pkwb(shorts1), pixels + 4); |
| |
| pixels += line_size; |
| block += 8; |
| } while (--i); |
| } |
| |
| void add_pixels_clamped_mvi(const int16_t *block, uint8_t *pixels, |
| ptrdiff_t line_size) |
| { |
| int h = 8; |
| /* Keep this function a leaf function by generating the constants |
| manually (mainly for the hack value ;-). */ |
| uint64_t clampmask = zap(-1, 0xaa); /* 0x00ff00ff00ff00ff */ |
| uint64_t signmask = zap(-1, 0x33); |
| signmask ^= signmask >> 1; /* 0x8000800080008000 */ |
| |
| do { |
| uint64_t shorts0, pix0, signs0; |
| uint64_t shorts1, pix1, signs1; |
| |
| shorts0 = ldq(block); |
| shorts1 = ldq(block + 4); |
| |
| pix0 = unpkbw(ldl(pixels)); |
| /* Signed subword add (MMX paddw). */ |
| signs0 = shorts0 & signmask; |
| shorts0 &= ~signmask; |
| shorts0 += pix0; |
| shorts0 ^= signs0; |
| /* Clamp. */ |
| shorts0 = maxsw4(shorts0, 0); |
| shorts0 = minsw4(shorts0, clampmask); |
| |
| /* Next 4. */ |
| pix1 = unpkbw(ldl(pixels + 4)); |
| signs1 = shorts1 & signmask; |
| shorts1 &= ~signmask; |
| shorts1 += pix1; |
| shorts1 ^= signs1; |
| shorts1 = maxsw4(shorts1, 0); |
| shorts1 = minsw4(shorts1, clampmask); |
| |
| stl(pkwb(shorts0), pixels); |
| stl(pkwb(shorts1), pixels + 4); |
| |
| pixels += line_size; |
| block += 8; |
| } while (--h); |
| } |
| #endif |
| |
| static void clear_blocks_axp(int16_t *blocks) { |
| uint64_t *p = (uint64_t *) blocks; |
| int n = sizeof(int16_t) * 6 * 64; |
| |
| do { |
| p[0] = 0; |
| p[1] = 0; |
| p[2] = 0; |
| p[3] = 0; |
| p[4] = 0; |
| p[5] = 0; |
| p[6] = 0; |
| p[7] = 0; |
| p += 8; |
| n -= 8 * 8; |
| } while (n); |
| } |
| |
| av_cold void ff_dsputil_init_alpha(DSPContext *c, AVCodecContext *avctx) |
| { |
| const int high_bit_depth = avctx->bits_per_raw_sample > 8; |
| |
| if (!high_bit_depth) { |
| c->clear_blocks = clear_blocks_axp; |
| } |
| |
| /* amask clears all bits that correspond to present features. */ |
| if (amask(AMASK_MVI) == 0) { |
| c->put_pixels_clamped = put_pixels_clamped_mvi_asm; |
| c->add_pixels_clamped = add_pixels_clamped_mvi_asm; |
| |
| if (!high_bit_depth) |
| c->get_pixels = get_pixels_mvi; |
| c->diff_pixels = diff_pixels_mvi; |
| c->sad[0] = pix_abs16x16_mvi_asm; |
| c->sad[1] = pix_abs8x8_mvi; |
| c->pix_abs[0][0] = pix_abs16x16_mvi_asm; |
| c->pix_abs[1][0] = pix_abs8x8_mvi; |
| c->pix_abs[0][1] = pix_abs16x16_x2_mvi; |
| c->pix_abs[0][2] = pix_abs16x16_y2_mvi; |
| c->pix_abs[0][3] = pix_abs16x16_xy2_mvi; |
| } |
| |
| put_pixels_clamped_axp_p = c->put_pixels_clamped; |
| add_pixels_clamped_axp_p = c->add_pixels_clamped; |
| |
| if (!avctx->lowres && avctx->bits_per_raw_sample <= 8 && |
| (avctx->idct_algo == FF_IDCT_AUTO || |
| avctx->idct_algo == FF_IDCT_SIMPLEALPHA)) { |
| c->idct_put = ff_simple_idct_put_axp; |
| c->idct_add = ff_simple_idct_add_axp; |
| c->idct = ff_simple_idct_axp; |
| } |
| } |