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-rw-r--r--media/ffvpx/libavcodec/idctdsp.c315
1 files changed, 315 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/idctdsp.c b/media/ffvpx/libavcodec/idctdsp.c
new file mode 100644
index 0000000000..7216afb094
--- /dev/null
+++ b/media/ffvpx/libavcodec/idctdsp.c
@@ -0,0 +1,315 @@
+/*
+ * 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 "config.h"
+#include "config_components.h"
+#include "libavutil/attributes.h"
+#include "libavutil/common.h"
+#include "avcodec.h"
+#include "dct.h"
+#include "faanidct.h"
+#include "idctdsp.h"
+#include "simple_idct.h"
+#include "xvididct.h"
+
+av_cold void ff_permute_scantable(uint8_t dst[64], const uint8_t src[64],
+ const uint8_t permutation[64])
+{
+ for (int i = 0; i < 64; i++) {
+ int j = src[i];
+ dst[i] = permutation[j];
+ }
+}
+
+av_cold void ff_init_scantable_permutation(uint8_t *idct_permutation,
+ enum idct_permutation_type perm_type)
+{
+ int i;
+
+#if ARCH_X86
+ if (ff_init_scantable_permutation_x86(idct_permutation,
+ perm_type))
+ return;
+#endif
+
+ switch (perm_type) {
+ case FF_IDCT_PERM_NONE:
+ for (i = 0; i < 64; i++)
+ idct_permutation[i] = i;
+ break;
+ case FF_IDCT_PERM_LIBMPEG2:
+ for (i = 0; i < 64; i++)
+ idct_permutation[i] = (i & 0x38) | ((i & 6) >> 1) | ((i & 1) << 2);
+ break;
+ case FF_IDCT_PERM_TRANSPOSE:
+ for (i = 0; i < 64; i++)
+ idct_permutation[i] = ((i & 7) << 3) | (i >> 3);
+ break;
+ case FF_IDCT_PERM_PARTTRANS:
+ for (i = 0; i < 64; i++)
+ idct_permutation[i] = (i & 0x24) | ((i & 3) << 3) | ((i >> 3) & 3);
+ break;
+ default:
+ av_log(NULL, AV_LOG_ERROR,
+ "Internal error, IDCT permutation not set\n");
+ }
+}
+
+void ff_put_pixels_clamped_c(const int16_t *block, uint8_t *av_restrict pixels,
+ ptrdiff_t line_size)
+{
+ int i;
+
+ /* read the pixels */
+ for (i = 0; i < 8; i++) {
+ pixels[0] = av_clip_uint8(block[0]);
+ pixels[1] = av_clip_uint8(block[1]);
+ pixels[2] = av_clip_uint8(block[2]);
+ pixels[3] = av_clip_uint8(block[3]);
+ pixels[4] = av_clip_uint8(block[4]);
+ pixels[5] = av_clip_uint8(block[5]);
+ pixels[6] = av_clip_uint8(block[6]);
+ pixels[7] = av_clip_uint8(block[7]);
+
+ pixels += line_size;
+ block += 8;
+ }
+}
+
+static void put_pixels_clamped4_c(const int16_t *block, uint8_t *av_restrict pixels,
+ int line_size)
+{
+ int i;
+
+ /* read the pixels */
+ for(i=0;i<4;i++) {
+ pixels[0] = av_clip_uint8(block[0]);
+ pixels[1] = av_clip_uint8(block[1]);
+ pixels[2] = av_clip_uint8(block[2]);
+ pixels[3] = av_clip_uint8(block[3]);
+
+ pixels += line_size;
+ block += 8;
+ }
+}
+
+static void put_pixels_clamped2_c(const int16_t *block, uint8_t *av_restrict pixels,
+ int line_size)
+{
+ int i;
+
+ /* read the pixels */
+ for(i=0;i<2;i++) {
+ pixels[0] = av_clip_uint8(block[0]);
+ pixels[1] = av_clip_uint8(block[1]);
+
+ pixels += line_size;
+ block += 8;
+ }
+}
+
+static void put_signed_pixels_clamped_c(const int16_t *block,
+ uint8_t *av_restrict pixels,
+ ptrdiff_t line_size)
+{
+ int i, j;
+
+ for (i = 0; i < 8; i++) {
+ for (j = 0; j < 8; j++) {
+ if (*block < -128)
+ *pixels = 0;
+ else if (*block > 127)
+ *pixels = 255;
+ else
+ *pixels = (uint8_t) (*block + 128);
+ block++;
+ pixels++;
+ }
+ pixels += (line_size - 8);
+ }
+}
+
+void ff_add_pixels_clamped_c(const int16_t *block, uint8_t *av_restrict pixels,
+ ptrdiff_t line_size)
+{
+ int i;
+
+ /* read the pixels */
+ for (i = 0; i < 8; i++) {
+ pixels[0] = av_clip_uint8(pixels[0] + block[0]);
+ pixels[1] = av_clip_uint8(pixels[1] + block[1]);
+ pixels[2] = av_clip_uint8(pixels[2] + block[2]);
+ pixels[3] = av_clip_uint8(pixels[3] + block[3]);
+ pixels[4] = av_clip_uint8(pixels[4] + block[4]);
+ pixels[5] = av_clip_uint8(pixels[5] + block[5]);
+ pixels[6] = av_clip_uint8(pixels[6] + block[6]);
+ pixels[7] = av_clip_uint8(pixels[7] + block[7]);
+ pixels += line_size;
+ block += 8;
+ }
+}
+
+static void add_pixels_clamped4_c(const int16_t *block, uint8_t *av_restrict pixels,
+ int line_size)
+{
+ int i;
+
+ /* read the pixels */
+ for(i=0;i<4;i++) {
+ pixels[0] = av_clip_uint8(pixels[0] + block[0]);
+ pixels[1] = av_clip_uint8(pixels[1] + block[1]);
+ pixels[2] = av_clip_uint8(pixels[2] + block[2]);
+ pixels[3] = av_clip_uint8(pixels[3] + block[3]);
+ pixels += line_size;
+ block += 8;
+ }
+}
+
+static void add_pixels_clamped2_c(const int16_t *block, uint8_t *av_restrict pixels,
+ int line_size)
+{
+ int i;
+
+ /* read the pixels */
+ for(i=0;i<2;i++) {
+ pixels[0] = av_clip_uint8(pixels[0] + block[0]);
+ pixels[1] = av_clip_uint8(pixels[1] + block[1]);
+ pixels += line_size;
+ block += 8;
+ }
+}
+
+static void ff_jref_idct4_put(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
+{
+ ff_j_rev_dct4 (block);
+ put_pixels_clamped4_c(block, dest, line_size);
+}
+static void ff_jref_idct4_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
+{
+ ff_j_rev_dct4 (block);
+ add_pixels_clamped4_c(block, dest, line_size);
+}
+
+static void ff_jref_idct2_put(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
+{
+ ff_j_rev_dct2 (block);
+ put_pixels_clamped2_c(block, dest, line_size);
+}
+static void ff_jref_idct2_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
+{
+ ff_j_rev_dct2 (block);
+ add_pixels_clamped2_c(block, dest, line_size);
+}
+
+static void ff_jref_idct1_put(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
+{
+ dest[0] = av_clip_uint8((block[0] + 4)>>3);
+}
+static void ff_jref_idct1_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
+{
+ dest[0] = av_clip_uint8(dest[0] + ((block[0] + 4)>>3));
+}
+
+av_cold void ff_idctdsp_init(IDCTDSPContext *c, AVCodecContext *avctx)
+{
+ av_unused const unsigned high_bit_depth = avctx->bits_per_raw_sample > 8;
+
+ if (avctx->lowres==1) {
+ c->idct_put = ff_jref_idct4_put;
+ c->idct_add = ff_jref_idct4_add;
+ c->idct = ff_j_rev_dct4;
+ c->perm_type = FF_IDCT_PERM_NONE;
+ } else if (avctx->lowres==2) {
+ c->idct_put = ff_jref_idct2_put;
+ c->idct_add = ff_jref_idct2_add;
+ c->idct = ff_j_rev_dct2;
+ c->perm_type = FF_IDCT_PERM_NONE;
+ } else if (avctx->lowres==3) {
+ c->idct_put = ff_jref_idct1_put;
+ c->idct_add = ff_jref_idct1_add;
+ c->idct = ff_j_rev_dct1;
+ c->perm_type = FF_IDCT_PERM_NONE;
+ } else {
+ if (avctx->bits_per_raw_sample == 10 || avctx->bits_per_raw_sample == 9) {
+ /* 10-bit MPEG-4 Simple Studio Profile requires a higher precision IDCT
+ However, it only uses idct_put */
+ if (c->mpeg4_studio_profile) {
+ c->idct_put = ff_simple_idct_put_int32_10bit;
+ c->idct_add = NULL;
+ c->idct = NULL;
+ } else {
+ c->idct_put = ff_simple_idct_put_int16_10bit;
+ c->idct_add = ff_simple_idct_add_int16_10bit;
+ c->idct = ff_simple_idct_int16_10bit;
+ }
+ c->perm_type = FF_IDCT_PERM_NONE;
+ } else if (avctx->bits_per_raw_sample == 12) {
+ c->idct_put = ff_simple_idct_put_int16_12bit;
+ c->idct_add = ff_simple_idct_add_int16_12bit;
+ c->idct = ff_simple_idct_int16_12bit;
+ c->perm_type = FF_IDCT_PERM_NONE;
+ } else {
+ if (avctx->idct_algo == FF_IDCT_INT) {
+ c->idct_put = ff_jref_idct_put;
+ c->idct_add = ff_jref_idct_add;
+ c->idct = ff_j_rev_dct;
+ c->perm_type = FF_IDCT_PERM_LIBMPEG2;
+#if CONFIG_FAANIDCT
+ } else if (avctx->idct_algo == FF_IDCT_FAAN) {
+ c->idct_put = ff_faanidct_put;
+ c->idct_add = ff_faanidct_add;
+ c->idct = ff_faanidct;
+ c->perm_type = FF_IDCT_PERM_NONE;
+#endif /* CONFIG_FAANIDCT */
+ } else { // accurate/default
+ c->idct_put = ff_simple_idct_put_int16_8bit;
+ c->idct_add = ff_simple_idct_add_int16_8bit;
+ c->idct = ff_simple_idct_int16_8bit;
+ c->perm_type = FF_IDCT_PERM_NONE;
+ }
+ }
+ }
+
+ c->put_pixels_clamped = ff_put_pixels_clamped_c;
+ c->put_signed_pixels_clamped = put_signed_pixels_clamped_c;
+ c->add_pixels_clamped = ff_add_pixels_clamped_c;
+
+ if (CONFIG_MPEG4_DECODER && avctx->idct_algo == FF_IDCT_XVID)
+ ff_xvid_idct_init(c, avctx);
+
+#if ARCH_AARCH64
+ ff_idctdsp_init_aarch64(c, avctx, high_bit_depth);
+#elif ARCH_ALPHA
+ ff_idctdsp_init_alpha(c, avctx, high_bit_depth);
+#elif ARCH_ARM
+ ff_idctdsp_init_arm(c, avctx, high_bit_depth);
+#elif ARCH_PPC
+ ff_idctdsp_init_ppc(c, avctx, high_bit_depth);
+#elif ARCH_RISCV
+ ff_idctdsp_init_riscv(c, avctx, high_bit_depth);
+#elif ARCH_X86
+ ff_idctdsp_init_x86(c, avctx, high_bit_depth);
+#elif ARCH_MIPS
+ ff_idctdsp_init_mips(c, avctx, high_bit_depth);
+#elif ARCH_LOONGARCH
+ ff_idctdsp_init_loongarch(c, avctx, high_bit_depth);
+#endif
+
+ ff_init_scantable_permutation(c->idct_permutation,
+ c->perm_type);
+}
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