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-rw-r--r--contrib/ffmpeg/libavcodec/vc1dsp.c459
1 files changed, 459 insertions, 0 deletions
diff --git a/contrib/ffmpeg/libavcodec/vc1dsp.c b/contrib/ffmpeg/libavcodec/vc1dsp.c
new file mode 100644
index 000000000..8a1a83411
--- /dev/null
+++ b/contrib/ffmpeg/libavcodec/vc1dsp.c
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+/*
+ * VC-1 and WMV3 decoder - DSP functions
+ * Copyright (c) 2006 Konstantin Shishkov
+ *
+ * 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
+ */
+
+/**
+* @file vc1dsp.c
+ * VC-1 and WMV3 decoder
+ *
+ */
+
+#include "dsputil.h"
+
+
+/** Apply overlap transform to horizontal edge
+*/
+static void vc1_v_overlap_c(uint8_t* src, int stride)
+{
+ int i;
+ int a, b, c, d;
+ int d1, d2;
+ int rnd = 1;
+ for(i = 0; i < 8; i++) {
+ a = src[-2*stride];
+ b = src[-stride];
+ c = src[0];
+ d = src[stride];
+ d1 = (a - d + 3 + rnd) >> 3;
+ d2 = (a - d + b - c + 4 - rnd) >> 3;
+
+ src[-2*stride] = a - d1;
+ src[-stride] = b - d2;
+ src[0] = c + d2;
+ src[stride] = d + d1;
+ src++;
+ rnd = !rnd;
+ }
+}
+
+/** Apply overlap transform to vertical edge
+*/
+static void vc1_h_overlap_c(uint8_t* src, int stride)
+{
+ int i;
+ int a, b, c, d;
+ int d1, d2;
+ int rnd = 1;
+ for(i = 0; i < 8; i++) {
+ a = src[-2];
+ b = src[-1];
+ c = src[0];
+ d = src[1];
+ d1 = (a - d + 3 + rnd) >> 3;
+ d2 = (a - d + b - c + 4 - rnd) >> 3;
+
+ src[-2] = a - d1;
+ src[-1] = b - d2;
+ src[0] = c + d2;
+ src[1] = d + d1;
+ src += stride;
+ rnd = !rnd;
+ }
+}
+
+
+/** Do inverse transform on 8x8 block
+*/
+static void vc1_inv_trans_8x8_c(DCTELEM block[64])
+{
+ int i;
+ register int t1,t2,t3,t4,t5,t6,t7,t8;
+ DCTELEM *src, *dst;
+
+ src = block;
+ dst = block;
+ for(i = 0; i < 8; i++){
+ t1 = 12 * (src[0] + src[4]) + 4;
+ t2 = 12 * (src[0] - src[4]) + 4;
+ t3 = 16 * src[2] + 6 * src[6];
+ t4 = 6 * src[2] - 16 * src[6];
+
+ t5 = t1 + t3;
+ t6 = t2 + t4;
+ t7 = t2 - t4;
+ t8 = t1 - t3;
+
+ t1 = 16 * src[1] + 15 * src[3] + 9 * src[5] + 4 * src[7];
+ t2 = 15 * src[1] - 4 * src[3] - 16 * src[5] - 9 * src[7];
+ t3 = 9 * src[1] - 16 * src[3] + 4 * src[5] + 15 * src[7];
+ t4 = 4 * src[1] - 9 * src[3] + 15 * src[5] - 16 * src[7];
+
+ dst[0] = (t5 + t1) >> 3;
+ dst[1] = (t6 + t2) >> 3;
+ dst[2] = (t7 + t3) >> 3;
+ dst[3] = (t8 + t4) >> 3;
+ dst[4] = (t8 - t4) >> 3;
+ dst[5] = (t7 - t3) >> 3;
+ dst[6] = (t6 - t2) >> 3;
+ dst[7] = (t5 - t1) >> 3;
+
+ src += 8;
+ dst += 8;
+ }
+
+ src = block;
+ dst = block;
+ for(i = 0; i < 8; i++){
+ t1 = 12 * (src[ 0] + src[32]) + 64;
+ t2 = 12 * (src[ 0] - src[32]) + 64;
+ t3 = 16 * src[16] + 6 * src[48];
+ t4 = 6 * src[16] - 16 * src[48];
+
+ t5 = t1 + t3;
+ t6 = t2 + t4;
+ t7 = t2 - t4;
+ t8 = t1 - t3;
+
+ t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];
+ t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];
+ t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];
+ t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];
+
+ dst[ 0] = (t5 + t1) >> 7;
+ dst[ 8] = (t6 + t2) >> 7;
+ dst[16] = (t7 + t3) >> 7;
+ dst[24] = (t8 + t4) >> 7;
+ dst[32] = (t8 - t4 + 1) >> 7;
+ dst[40] = (t7 - t3 + 1) >> 7;
+ dst[48] = (t6 - t2 + 1) >> 7;
+ dst[56] = (t5 - t1 + 1) >> 7;
+
+ src++;
+ dst++;
+ }
+}
+
+/** Do inverse transform on 8x4 part of block
+*/
+static void vc1_inv_trans_8x4_c(uint8_t *dest, int linesize, DCTELEM *block)
+{
+ int i;
+ register int t1,t2,t3,t4,t5,t6,t7,t8;
+ DCTELEM *src, *dst;
+ const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
+
+ src = block;
+ dst = block;
+ for(i = 0; i < 4; i++){
+ t1 = 12 * (src[0] + src[4]) + 4;
+ t2 = 12 * (src[0] - src[4]) + 4;
+ t3 = 16 * src[2] + 6 * src[6];
+ t4 = 6 * src[2] - 16 * src[6];
+
+ t5 = t1 + t3;
+ t6 = t2 + t4;
+ t7 = t2 - t4;
+ t8 = t1 - t3;
+
+ t1 = 16 * src[1] + 15 * src[3] + 9 * src[5] + 4 * src[7];
+ t2 = 15 * src[1] - 4 * src[3] - 16 * src[5] - 9 * src[7];
+ t3 = 9 * src[1] - 16 * src[3] + 4 * src[5] + 15 * src[7];
+ t4 = 4 * src[1] - 9 * src[3] + 15 * src[5] - 16 * src[7];
+
+ dst[0] = (t5 + t1) >> 3;
+ dst[1] = (t6 + t2) >> 3;
+ dst[2] = (t7 + t3) >> 3;
+ dst[3] = (t8 + t4) >> 3;
+ dst[4] = (t8 - t4) >> 3;
+ dst[5] = (t7 - t3) >> 3;
+ dst[6] = (t6 - t2) >> 3;
+ dst[7] = (t5 - t1) >> 3;
+
+ src += 8;
+ dst += 8;
+ }
+
+ src = block;
+ for(i = 0; i < 8; i++){
+ t1 = 17 * (src[ 0] + src[16]) + 64;
+ t2 = 17 * (src[ 0] - src[16]) + 64;
+ t3 = 22 * src[ 8] + 10 * src[24];
+ t4 = 22 * src[24] - 10 * src[ 8];
+
+ dest[0*linesize] = cm[dest[0*linesize] + ((t1 + t3) >> 7)];
+ dest[1*linesize] = cm[dest[1*linesize] + ((t2 - t4) >> 7)];
+ dest[2*linesize] = cm[dest[2*linesize] + ((t2 + t4) >> 7)];
+ dest[3*linesize] = cm[dest[3*linesize] + ((t1 - t3) >> 7)];
+
+ src ++;
+ dest++;
+ }
+}
+
+/** Do inverse transform on 4x8 parts of block
+*/
+static void vc1_inv_trans_4x8_c(uint8_t *dest, int linesize, DCTELEM *block)
+{
+ int i;
+ register int t1,t2,t3,t4,t5,t6,t7,t8;
+ DCTELEM *src, *dst;
+ const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
+
+ src = block;
+ dst = block;
+ for(i = 0; i < 8; i++){
+ t1 = 17 * (src[0] + src[2]) + 4;
+ t2 = 17 * (src[0] - src[2]) + 4;
+ t3 = 22 * src[1] + 10 * src[3];
+ t4 = 22 * src[3] - 10 * src[1];
+
+ dst[0] = (t1 + t3) >> 3;
+ dst[1] = (t2 - t4) >> 3;
+ dst[2] = (t2 + t4) >> 3;
+ dst[3] = (t1 - t3) >> 3;
+
+ src += 8;
+ dst += 8;
+ }
+
+ src = block;
+ for(i = 0; i < 4; i++){
+ t1 = 12 * (src[ 0] + src[32]) + 64;
+ t2 = 12 * (src[ 0] - src[32]) + 64;
+ t3 = 16 * src[16] + 6 * src[48];
+ t4 = 6 * src[16] - 16 * src[48];
+
+ t5 = t1 + t3;
+ t6 = t2 + t4;
+ t7 = t2 - t4;
+ t8 = t1 - t3;
+
+ t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];
+ t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];
+ t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];
+ t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];
+
+ dest[0*linesize] = cm[dest[0*linesize] + ((t5 + t1) >> 7)];
+ dest[1*linesize] = cm[dest[1*linesize] + ((t6 + t2) >> 7)];
+ dest[2*linesize] = cm[dest[2*linesize] + ((t7 + t3) >> 7)];
+ dest[3*linesize] = cm[dest[3*linesize] + ((t8 + t4) >> 7)];
+ dest[4*linesize] = cm[dest[4*linesize] + ((t8 - t4 + 1) >> 7)];
+ dest[5*linesize] = cm[dest[5*linesize] + ((t7 - t3 + 1) >> 7)];
+ dest[6*linesize] = cm[dest[6*linesize] + ((t6 - t2 + 1) >> 7)];
+ dest[7*linesize] = cm[dest[7*linesize] + ((t5 - t1 + 1) >> 7)];
+
+ src ++;
+ dest++;
+ }
+}
+
+/** Do inverse transform on 4x4 part of block
+*/
+static void vc1_inv_trans_4x4_c(uint8_t *dest, int linesize, DCTELEM *block)
+{
+ int i;
+ register int t1,t2,t3,t4;
+ DCTELEM *src, *dst;
+ const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
+
+ src = block;
+ dst = block;
+ for(i = 0; i < 4; i++){
+ t1 = 17 * (src[0] + src[2]) + 4;
+ t2 = 17 * (src[0] - src[2]) + 4;
+ t3 = 22 * src[1] + 10 * src[3];
+ t4 = 22 * src[3] - 10 * src[1];
+
+ dst[0] = (t1 + t3) >> 3;
+ dst[1] = (t2 - t4) >> 3;
+ dst[2] = (t2 + t4) >> 3;
+ dst[3] = (t1 - t3) >> 3;
+
+ src += 8;
+ dst += 8;
+ }
+
+ src = block;
+ for(i = 0; i < 4; i++){
+ t1 = 17 * (src[ 0] + src[16]) + 64;
+ t2 = 17 * (src[ 0] - src[16]) + 64;
+ t3 = 22 * src[ 8] + 10 * src[24];
+ t4 = 22 * src[24] - 10 * src[ 8];
+
+ dest[0*linesize] = cm[dest[0*linesize] + ((t1 + t3) >> 7)];
+ dest[1*linesize] = cm[dest[1*linesize] + ((t2 - t4) >> 7)];
+ dest[2*linesize] = cm[dest[2*linesize] + ((t2 + t4) >> 7)];
+ dest[3*linesize] = cm[dest[3*linesize] + ((t1 - t3) >> 7)];
+
+ src ++;
+ dest++;
+ }
+}
+
+/* motion compensation functions */
+/** Filter in case of 2 filters */
+#define VC1_MSPEL_FILTER_16B(DIR, TYPE) \
+static av_always_inline int vc1_mspel_ ## DIR ## _filter_16bits(const TYPE *src, int stride, int mode) \
+{ \
+ switch(mode){ \
+ case 0: /* no shift - should not occur */ \
+ return 0; \
+ case 1: /* 1/4 shift */ \
+ return -4*src[-stride] + 53*src[0] + 18*src[stride] - 3*src[stride*2]; \
+ case 2: /* 1/2 shift */ \
+ return -src[-stride] + 9*src[0] + 9*src[stride] - src[stride*2]; \
+ case 3: /* 3/4 shift */ \
+ return -3*src[-stride] + 18*src[0] + 53*src[stride] - 4*src[stride*2]; \
+ } \
+ return 0; /* should not occur */ \
+}
+
+VC1_MSPEL_FILTER_16B(ver, uint8_t);
+VC1_MSPEL_FILTER_16B(hor, int16_t);
+
+
+/** Filter used to interpolate fractional pel values
+ */
+static av_always_inline int vc1_mspel_filter(const uint8_t *src, int stride, int mode, int r)
+{
+ switch(mode){
+ case 0: //no shift
+ return src[0];
+ case 1: // 1/4 shift
+ return (-4*src[-stride] + 53*src[0] + 18*src[stride] - 3*src[stride*2] + 32 - r) >> 6;
+ case 2: // 1/2 shift
+ return (-src[-stride] + 9*src[0] + 9*src[stride] - src[stride*2] + 8 - r) >> 4;
+ case 3: // 3/4 shift
+ return (-3*src[-stride] + 18*src[0] + 53*src[stride] - 4*src[stride*2] + 32 - r) >> 6;
+ }
+ return 0; //should not occur
+}
+
+/** Function used to do motion compensation with bicubic interpolation
+ */
+static void vc1_mspel_mc(uint8_t *dst, const uint8_t *src, int stride, int hmode, int vmode, int rnd)
+{
+ int i, j;
+
+ if (vmode) { /* Horizontal filter to apply */
+ int r;
+
+ if (hmode) { /* Vertical filter to apply, output to tmp */
+ static const int shift_value[] = { 0, 5, 1, 5 };
+ int shift = (shift_value[hmode]+shift_value[vmode])>>1;
+ int16_t tmp[11*8], *tptr = tmp;
+
+ r = (1<<(shift-1)) + rnd-1;
+
+ src -= 1;
+ for(j = 0; j < 8; j++) {
+ for(i = 0; i < 11; i++)
+ tptr[i] = (vc1_mspel_ver_filter_16bits(src + i, stride, vmode)+r)>>shift;
+ src += stride;
+ tptr += 11;
+ }
+
+ r = 64-rnd;
+ tptr = tmp+1;
+ for(j = 0; j < 8; j++) {
+ for(i = 0; i < 8; i++)
+ dst[i] = av_clip_uint8((vc1_mspel_hor_filter_16bits(tptr + i, 1, hmode)+r)>>7);
+ dst += stride;
+ tptr += 11;
+ }
+
+ return;
+ }
+ else { /* No horizontal filter, output 8 lines to dst */
+ r = 1-rnd;
+
+ for(j = 0; j < 8; j++) {
+ for(i = 0; i < 8; i++)
+ dst[i] = av_clip_uint8(vc1_mspel_filter(src + i, stride, vmode, r));
+ src += stride;
+ dst += stride;
+ }
+ return;
+ }
+ }
+
+ /* Horizontal mode with no vertical mode */
+ for(j = 0; j < 8; j++) {
+ for(i = 0; i < 8; i++)
+ dst[i] = av_clip_uint8(vc1_mspel_filter(src + i, 1, hmode, rnd));
+ dst += stride;
+ src += stride;
+ }
+}
+
+/* pixel functions - really are entry points to vc1_mspel_mc */
+
+/* this one is defined in dsputil.c */
+void ff_put_vc1_mspel_mc00_c(uint8_t *dst, const uint8_t *src, int stride, int rnd);
+
+#define PUT_VC1_MSPEL(a, b)\
+static void put_vc1_mspel_mc ## a ## b ##_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { \
+ vc1_mspel_mc(dst, src, stride, a, b, rnd); \
+}
+
+PUT_VC1_MSPEL(1, 0)
+PUT_VC1_MSPEL(2, 0)
+PUT_VC1_MSPEL(3, 0)
+
+PUT_VC1_MSPEL(0, 1)
+PUT_VC1_MSPEL(1, 1)
+PUT_VC1_MSPEL(2, 1)
+PUT_VC1_MSPEL(3, 1)
+
+PUT_VC1_MSPEL(0, 2)
+PUT_VC1_MSPEL(1, 2)
+PUT_VC1_MSPEL(2, 2)
+PUT_VC1_MSPEL(3, 2)
+
+PUT_VC1_MSPEL(0, 3)
+PUT_VC1_MSPEL(1, 3)
+PUT_VC1_MSPEL(2, 3)
+PUT_VC1_MSPEL(3, 3)
+
+void ff_vc1dsp_init(DSPContext* dsp, AVCodecContext *avctx) {
+ dsp->vc1_inv_trans_8x8 = vc1_inv_trans_8x8_c;
+ dsp->vc1_inv_trans_4x8 = vc1_inv_trans_4x8_c;
+ dsp->vc1_inv_trans_8x4 = vc1_inv_trans_8x4_c;
+ dsp->vc1_inv_trans_4x4 = vc1_inv_trans_4x4_c;
+ dsp->vc1_h_overlap = vc1_h_overlap_c;
+ dsp->vc1_v_overlap = vc1_v_overlap_c;
+
+ dsp->put_vc1_mspel_pixels_tab[ 0] = ff_put_vc1_mspel_mc00_c;
+ dsp->put_vc1_mspel_pixels_tab[ 1] = put_vc1_mspel_mc10_c;
+ dsp->put_vc1_mspel_pixels_tab[ 2] = put_vc1_mspel_mc20_c;
+ dsp->put_vc1_mspel_pixels_tab[ 3] = put_vc1_mspel_mc30_c;
+ dsp->put_vc1_mspel_pixels_tab[ 4] = put_vc1_mspel_mc01_c;
+ dsp->put_vc1_mspel_pixels_tab[ 5] = put_vc1_mspel_mc11_c;
+ dsp->put_vc1_mspel_pixels_tab[ 6] = put_vc1_mspel_mc21_c;
+ dsp->put_vc1_mspel_pixels_tab[ 7] = put_vc1_mspel_mc31_c;
+ dsp->put_vc1_mspel_pixels_tab[ 8] = put_vc1_mspel_mc02_c;
+ dsp->put_vc1_mspel_pixels_tab[ 9] = put_vc1_mspel_mc12_c;
+ dsp->put_vc1_mspel_pixels_tab[10] = put_vc1_mspel_mc22_c;
+ dsp->put_vc1_mspel_pixels_tab[11] = put_vc1_mspel_mc32_c;
+ dsp->put_vc1_mspel_pixels_tab[12] = put_vc1_mspel_mc03_c;
+ dsp->put_vc1_mspel_pixels_tab[13] = put_vc1_mspel_mc13_c;
+ dsp->put_vc1_mspel_pixels_tab[14] = put_vc1_mspel_mc23_c;
+ dsp->put_vc1_mspel_pixels_tab[15] = put_vc1_mspel_mc33_c;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-02 06:51:55 +0000