forked from mirrors/gecko-dev
bbbd3c280f
Backed out changeset ce0c34e548fa (bug 1889978) Backed out changeset 96e08e04fa4d (bug 1889978) Backed out changeset 2aeb87615ee0 (bug 1889978) Backed out changeset 2272c3a73ad3 (bug 1889978) Backed out changeset dc81d0c812b8 (bug 1889978)
315 lines
10 KiB
C
315 lines
10 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 "config.h"
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#include "config_components.h"
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#include "libavutil/attributes.h"
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#include "libavutil/common.h"
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#include "avcodec.h"
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#include "dct.h"
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#include "faanidct.h"
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#include "idctdsp.h"
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#include "simple_idct.h"
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#include "xvididct.h"
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av_cold void ff_permute_scantable(uint8_t dst[64], const uint8_t src[64],
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const uint8_t permutation[64])
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{
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for (int i = 0; i < 64; i++) {
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int j = src[i];
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dst[i] = permutation[j];
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}
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}
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av_cold void ff_init_scantable_permutation(uint8_t *idct_permutation,
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enum idct_permutation_type perm_type)
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{
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int i;
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#if ARCH_X86
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if (ff_init_scantable_permutation_x86(idct_permutation,
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perm_type))
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return;
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#endif
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switch (perm_type) {
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case FF_IDCT_PERM_NONE:
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for (i = 0; i < 64; i++)
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idct_permutation[i] = i;
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break;
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case FF_IDCT_PERM_LIBMPEG2:
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for (i = 0; i < 64; i++)
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idct_permutation[i] = (i & 0x38) | ((i & 6) >> 1) | ((i & 1) << 2);
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break;
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case FF_IDCT_PERM_TRANSPOSE:
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for (i = 0; i < 64; i++)
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idct_permutation[i] = ((i & 7) << 3) | (i >> 3);
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break;
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case FF_IDCT_PERM_PARTTRANS:
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for (i = 0; i < 64; i++)
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idct_permutation[i] = (i & 0x24) | ((i & 3) << 3) | ((i >> 3) & 3);
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break;
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default:
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av_log(NULL, AV_LOG_ERROR,
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"Internal error, IDCT permutation not set\n");
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}
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}
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void ff_put_pixels_clamped_c(const int16_t *block, uint8_t *av_restrict pixels,
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ptrdiff_t line_size)
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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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pixels[0] = av_clip_uint8(block[0]);
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pixels[1] = av_clip_uint8(block[1]);
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pixels[2] = av_clip_uint8(block[2]);
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pixels[3] = av_clip_uint8(block[3]);
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pixels[4] = av_clip_uint8(block[4]);
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pixels[5] = av_clip_uint8(block[5]);
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pixels[6] = av_clip_uint8(block[6]);
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pixels[7] = av_clip_uint8(block[7]);
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pixels += line_size;
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block += 8;
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}
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}
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static void put_pixels_clamped4_c(const int16_t *block, uint8_t *av_restrict pixels,
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int line_size)
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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<4;i++) {
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pixels[0] = av_clip_uint8(block[0]);
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pixels[1] = av_clip_uint8(block[1]);
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pixels[2] = av_clip_uint8(block[2]);
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pixels[3] = av_clip_uint8(block[3]);
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pixels += line_size;
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block += 8;
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}
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}
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static void put_pixels_clamped2_c(const int16_t *block, uint8_t *av_restrict pixels,
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int line_size)
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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<2;i++) {
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pixels[0] = av_clip_uint8(block[0]);
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pixels[1] = av_clip_uint8(block[1]);
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pixels += line_size;
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block += 8;
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}
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}
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static void put_signed_pixels_clamped_c(const int16_t *block,
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uint8_t *av_restrict pixels,
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ptrdiff_t line_size)
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{
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int i, j;
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for (i = 0; i < 8; i++) {
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for (j = 0; j < 8; j++) {
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if (*block < -128)
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*pixels = 0;
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else if (*block > 127)
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*pixels = 255;
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else
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*pixels = (uint8_t) (*block + 128);
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block++;
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pixels++;
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}
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pixels += (line_size - 8);
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}
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}
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void ff_add_pixels_clamped_c(const int16_t *block, uint8_t *av_restrict pixels,
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ptrdiff_t line_size)
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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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pixels[0] = av_clip_uint8(pixels[0] + block[0]);
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pixels[1] = av_clip_uint8(pixels[1] + block[1]);
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pixels[2] = av_clip_uint8(pixels[2] + block[2]);
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pixels[3] = av_clip_uint8(pixels[3] + block[3]);
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pixels[4] = av_clip_uint8(pixels[4] + block[4]);
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pixels[5] = av_clip_uint8(pixels[5] + block[5]);
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pixels[6] = av_clip_uint8(pixels[6] + block[6]);
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pixels[7] = av_clip_uint8(pixels[7] + block[7]);
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pixels += line_size;
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block += 8;
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}
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}
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static void add_pixels_clamped4_c(const int16_t *block, uint8_t *av_restrict pixels,
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int line_size)
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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<4;i++) {
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pixels[0] = av_clip_uint8(pixels[0] + block[0]);
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pixels[1] = av_clip_uint8(pixels[1] + block[1]);
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pixels[2] = av_clip_uint8(pixels[2] + block[2]);
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pixels[3] = av_clip_uint8(pixels[3] + block[3]);
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pixels += line_size;
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block += 8;
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}
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}
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static void add_pixels_clamped2_c(const int16_t *block, uint8_t *av_restrict pixels,
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int line_size)
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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<2;i++) {
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pixels[0] = av_clip_uint8(pixels[0] + block[0]);
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pixels[1] = av_clip_uint8(pixels[1] + block[1]);
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pixels += line_size;
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block += 8;
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}
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}
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static void ff_jref_idct4_put(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
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{
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ff_j_rev_dct4 (block);
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put_pixels_clamped4_c(block, dest, line_size);
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}
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static void ff_jref_idct4_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
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{
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ff_j_rev_dct4 (block);
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add_pixels_clamped4_c(block, dest, line_size);
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}
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static void ff_jref_idct2_put(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
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{
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ff_j_rev_dct2 (block);
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put_pixels_clamped2_c(block, dest, line_size);
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}
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static void ff_jref_idct2_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
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{
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ff_j_rev_dct2 (block);
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add_pixels_clamped2_c(block, dest, line_size);
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}
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static void ff_jref_idct1_put(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
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{
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dest[0] = av_clip_uint8((block[0] + 4)>>3);
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}
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static void ff_jref_idct1_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
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{
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dest[0] = av_clip_uint8(dest[0] + ((block[0] + 4)>>3));
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}
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av_cold void ff_idctdsp_init(IDCTDSPContext *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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if (avctx->lowres==1) {
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c->idct_put = ff_jref_idct4_put;
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c->idct_add = ff_jref_idct4_add;
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c->idct = ff_j_rev_dct4;
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c->perm_type = FF_IDCT_PERM_NONE;
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} else if (avctx->lowres==2) {
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c->idct_put = ff_jref_idct2_put;
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c->idct_add = ff_jref_idct2_add;
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c->idct = ff_j_rev_dct2;
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c->perm_type = FF_IDCT_PERM_NONE;
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} else if (avctx->lowres==3) {
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c->idct_put = ff_jref_idct1_put;
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c->idct_add = ff_jref_idct1_add;
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c->idct = ff_j_rev_dct1;
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c->perm_type = FF_IDCT_PERM_NONE;
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} else {
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if (avctx->bits_per_raw_sample == 10 || avctx->bits_per_raw_sample == 9) {
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/* 10-bit MPEG-4 Simple Studio Profile requires a higher precision IDCT
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However, it only uses idct_put */
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if (c->mpeg4_studio_profile) {
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c->idct_put = ff_simple_idct_put_int32_10bit;
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c->idct_add = NULL;
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c->idct = NULL;
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} else {
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c->idct_put = ff_simple_idct_put_int16_10bit;
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c->idct_add = ff_simple_idct_add_int16_10bit;
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c->idct = ff_simple_idct_int16_10bit;
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}
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c->perm_type = FF_IDCT_PERM_NONE;
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} else if (avctx->bits_per_raw_sample == 12) {
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c->idct_put = ff_simple_idct_put_int16_12bit;
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c->idct_add = ff_simple_idct_add_int16_12bit;
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c->idct = ff_simple_idct_int16_12bit;
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c->perm_type = FF_IDCT_PERM_NONE;
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} else {
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if (avctx->idct_algo == FF_IDCT_INT) {
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c->idct_put = ff_jref_idct_put;
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c->idct_add = ff_jref_idct_add;
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c->idct = ff_j_rev_dct;
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c->perm_type = FF_IDCT_PERM_LIBMPEG2;
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#if CONFIG_FAANIDCT
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} else if (avctx->idct_algo == FF_IDCT_FAAN) {
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c->idct_put = ff_faanidct_put;
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c->idct_add = ff_faanidct_add;
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c->idct = ff_faanidct;
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c->perm_type = FF_IDCT_PERM_NONE;
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#endif /* CONFIG_FAANIDCT */
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} else { // accurate/default
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c->idct_put = ff_simple_idct_put_int16_8bit;
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c->idct_add = ff_simple_idct_add_int16_8bit;
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c->idct = ff_simple_idct_int16_8bit;
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c->perm_type = FF_IDCT_PERM_NONE;
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}
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}
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}
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c->put_pixels_clamped = ff_put_pixels_clamped_c;
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c->put_signed_pixels_clamped = put_signed_pixels_clamped_c;
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c->add_pixels_clamped = ff_add_pixels_clamped_c;
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if (CONFIG_MPEG4_DECODER && avctx->idct_algo == FF_IDCT_XVID)
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ff_xvid_idct_init(c, avctx);
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#if ARCH_AARCH64
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ff_idctdsp_init_aarch64(c, avctx, high_bit_depth);
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#elif ARCH_ALPHA
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ff_idctdsp_init_alpha(c, avctx, high_bit_depth);
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#elif ARCH_ARM
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ff_idctdsp_init_arm(c, avctx, high_bit_depth);
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#elif ARCH_PPC
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ff_idctdsp_init_ppc(c, avctx, high_bit_depth);
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#elif ARCH_RISCV
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ff_idctdsp_init_riscv(c, avctx, high_bit_depth);
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#elif ARCH_X86
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ff_idctdsp_init_x86(c, avctx, high_bit_depth);
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#elif ARCH_MIPS
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ff_idctdsp_init_mips(c, avctx, high_bit_depth);
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#elif ARCH_LOONGARCH
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ff_idctdsp_init_loongarch(c, avctx, high_bit_depth);
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#endif
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ff_init_scantable_permutation(c->idct_permutation,
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c->perm_type);
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}
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