mirror of
https://github.com/FFmpeg/FFmpeg.git
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cdd139d760
Introduced in 1992, the Alpha was a 64-bit RISC processor designed to replace the VAX CISC machines sold by Digital Equipment Corporation. After Digital was acquired by Compaq in 1998 -- who themselves would be later purchased by Hewlett-Packard, the architecture was phased out over the following decade. It became effectively defunct in 2007, the last publicly available processor being the Alpha 21364. FFmpeg has not added any DSP code for this architecture since lowres2 was introduced in 2012, and it is more than unlikely someone still wishes to maintain it. Remove the DSP and support code. Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
118 lines
3.5 KiB
C
118 lines
3.5 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdint.h>
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#include "config.h"
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#include "libavutil/attributes.h"
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#include "libavutil/intreadwrite.h"
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#include "avcodec.h"
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#include "pixblockdsp.h"
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static void get_pixels_16_c(int16_t *restrict block, const uint8_t *pixels,
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ptrdiff_t stride)
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{
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AV_COPY128U(block + 0 * 8, pixels + 0 * stride);
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AV_COPY128U(block + 1 * 8, pixels + 1 * stride);
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AV_COPY128U(block + 2 * 8, pixels + 2 * stride);
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AV_COPY128U(block + 3 * 8, pixels + 3 * stride);
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AV_COPY128U(block + 4 * 8, pixels + 4 * stride);
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AV_COPY128U(block + 5 * 8, pixels + 5 * stride);
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AV_COPY128U(block + 6 * 8, pixels + 6 * stride);
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AV_COPY128U(block + 7 * 8, pixels + 7 * stride);
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}
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static void get_pixels_8_c(int16_t *restrict block, const uint8_t *pixels,
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ptrdiff_t stride)
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{
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int i;
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/* read the pixels */
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for (i = 0; i < 8; i++) {
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block[0] = pixels[0];
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block[1] = pixels[1];
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block[2] = pixels[2];
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block[3] = pixels[3];
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block[4] = pixels[4];
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block[5] = pixels[5];
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block[6] = pixels[6];
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block[7] = pixels[7];
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pixels += stride;
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block += 8;
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}
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}
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static void diff_pixels_c(int16_t *restrict block, const uint8_t *s1,
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const uint8_t *s2, ptrdiff_t stride)
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{
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int i;
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/* read the pixels */
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for (i = 0; i < 8; i++) {
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block[0] = s1[0] - s2[0];
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block[1] = s1[1] - s2[1];
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block[2] = s1[2] - s2[2];
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block[3] = s1[3] - s2[3];
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block[4] = s1[4] - s2[4];
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block[5] = s1[5] - s2[5];
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block[6] = s1[6] - s2[6];
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block[7] = s1[7] - s2[7];
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s1 += stride;
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s2 += stride;
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block += 8;
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}
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}
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av_cold void ff_pixblockdsp_init(PixblockDSPContext *c, AVCodecContext *avctx)
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{
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av_unused const unsigned high_bit_depth = avctx->bits_per_raw_sample > 8;
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c->diff_pixels_unaligned =
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c->diff_pixels = diff_pixels_c;
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switch (avctx->bits_per_raw_sample) {
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case 9:
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case 10:
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case 12:
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case 14:
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c->get_pixels_unaligned =
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c->get_pixels = get_pixels_16_c;
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break;
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default:
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if (avctx->bits_per_raw_sample<=8 || avctx->codec_type != AVMEDIA_TYPE_VIDEO) {
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c->get_pixels_unaligned =
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c->get_pixels = get_pixels_8_c;
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}
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break;
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}
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#if ARCH_AARCH64
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ff_pixblockdsp_init_aarch64(c, avctx, high_bit_depth);
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#elif ARCH_ARM
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ff_pixblockdsp_init_arm(c, avctx, high_bit_depth);
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#elif ARCH_PPC
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ff_pixblockdsp_init_ppc(c, avctx, high_bit_depth);
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#elif ARCH_RISCV
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ff_pixblockdsp_init_riscv(c, avctx, high_bit_depth);
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#elif ARCH_X86
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ff_pixblockdsp_init_x86(c, avctx, high_bit_depth);
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#elif ARCH_MIPS
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ff_pixblockdsp_init_mips(c, avctx, high_bit_depth);
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#endif
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}
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