322 lines
10 KiB
C
322 lines
10 KiB
C
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/*
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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 "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_init_scantable(uint8_t *permutation, ScanTable *st,
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const uint8_t *src_scantable)
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{
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int i, end;
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st->scantable = src_scantable;
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for (i = 0; i < 64; i++) {
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int j = src_scantable[i];
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st->permutated[i] = permutation[j];
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}
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end = -1;
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for (i = 0; i < 64; i++) {
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int j = st->permutated[i];
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if (j > end)
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end = j;
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st->raster_end[i] = end;
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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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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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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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/* Be sure FF_IDCT_NONE will select this one, since it uses FF_IDCT_PERM_NONE */
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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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if (ARCH_ALPHA)
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ff_idctdsp_init_alpha(c, avctx, high_bit_depth);
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if (ARCH_ARM)
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ff_idctdsp_init_arm(c, avctx, high_bit_depth);
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if (ARCH_PPC)
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ff_idctdsp_init_ppc(c, avctx, high_bit_depth);
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if (ARCH_X86)
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ff_idctdsp_init_x86(c, avctx, high_bit_depth);
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if (ARCH_MIPS)
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ff_idctdsp_init_mips(c, avctx, high_bit_depth);
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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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