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-rw-r--r--apps/plugins/mpegplayer/libmpeg2/idct.c274
1 files changed, 0 insertions, 274 deletions
diff --git a/apps/plugins/mpegplayer/libmpeg2/idct.c b/apps/plugins/mpegplayer/libmpeg2/idct.c
deleted file mode 100644
index 7f0b9a3c12..0000000000
--- a/apps/plugins/mpegplayer/libmpeg2/idct.c
+++ /dev/null
@@ -1,274 +0,0 @@
-/*
- * idct.c
- * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
- * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
- *
- * This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
- * See http://libmpeg2.sourceforge.net/ for updates.
- *
- * mpeg2dec is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * mpeg2dec 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * $Id$
- * libmpeg2 sync history:
- * 2008-07-01 - CVS revision 1.36
- */
-
-#include "plugin.h"
-
-#include "mpeg2dec_config.h"
-
-#include "mpeg2.h"
-#include "attributes.h"
-#include "mpeg2_internal.h"
-
-#if defined(CPU_COLDFIRE) || defined (CPU_ARM)
-#define IDCT_ASM
-#endif
-
-#ifndef IDCT_ASM
-
-#define W1 2841 /* 2048 * sqrt (2) * cos (1 * pi / 16) */
-#define W2 2676 /* 2048 * sqrt (2) * cos (2 * pi / 16) */
-#define W3 2408 /* 2048 * sqrt (2) * cos (3 * pi / 16) */
-#define W5 1609 /* 2048 * sqrt (2) * cos (5 * pi / 16) */
-#define W6 1108 /* 2048 * sqrt (2) * cos (6 * pi / 16) */
-#define W7 565 /* 2048 * sqrt (2) * cos (7 * pi / 16) */
-
-/*
- * In legal streams, the IDCT output should be between -384 and +384.
- * In corrupted streams, it is possible to force the IDCT output to go
- * to +-3826 - this is the worst case for a column IDCT where the
- * column inputs are 16-bit values.
- */
-#define CLIP(i) \
- ({ typeof (i) _i = (i); \
- if ((_i & 0xff) != _i) \
- _i = ~(_i >> (8*sizeof(_i) - 1)); \
- _i; })
-
-#if 0
-#define BUTTERFLY(t0,t1,W0,W1,d0,d1) \
- do { \
- t0 = W0 * d0 + W1 * d1; \
- t1 = W0 * d1 - W1 * d0; \
- } while (0)
-#else
-#define BUTTERFLY(t0,t1,W0,W1,d0,d1) \
- do { \
- int tmp = W0 * (d0 + d1); \
- t0 = tmp + (W1 - W0) * d1; \
- t1 = tmp - (W1 + W0) * d0; \
- } while (0)
-#endif
-
-static inline void idct_row (int16_t * const block)
-{
- int d0, d1, d2, d3;
- int a0, a1, a2, a3, b0, b1, b2, b3;
- int t0, t1, t2, t3;
-
- /* shortcut */
- if (likely (!(block[1] | ((int32_t *)block)[1] | ((int32_t *)block)[2] |
- ((int32_t *)block)[3])))
- {
- uint32_t tmp = (uint16_t) (block[0] >> 1);
- tmp |= tmp << 16;
- ((int32_t *)block)[0] = tmp;
- ((int32_t *)block)[1] = tmp;
- ((int32_t *)block)[2] = tmp;
- ((int32_t *)block)[3] = tmp;
- return;
- }
-
- d0 = (block[0] << 11) + 2048;
- d1 = block[1];
- d2 = block[2] << 11;
- d3 = block[3];
- t0 = d0 + d2;
- t1 = d0 - d2;
- BUTTERFLY (t2, t3, W6, W2, d3, d1);
- a0 = t0 + t2;
- a1 = t1 + t3;
- a2 = t1 - t3;
- a3 = t0 - t2;
-
- d0 = block[4];
- d1 = block[5];
- d2 = block[6];
- d3 = block[7];
- BUTTERFLY (t0, t1, W7, W1, d3, d0);
- BUTTERFLY (t2, t3, W3, W5, d1, d2);
- b0 = t0 + t2;
- b3 = t1 + t3;
- t0 -= t2;
- t1 -= t3;
- b1 = ((t0 + t1) >> 8) * 181;
- b2 = ((t0 - t1) >> 8) * 181;
-
- block[0] = (a0 + b0) >> 12;
- block[1] = (a1 + b1) >> 12;
- block[2] = (a2 + b2) >> 12;
- block[3] = (a3 + b3) >> 12;
- block[4] = (a3 - b3) >> 12;
- block[5] = (a2 - b2) >> 12;
- block[6] = (a1 - b1) >> 12;
- block[7] = (a0 - b0) >> 12;
-}
-
-static inline void idct_col (int16_t * const block)
-{
- int d0, d1, d2, d3;
- int a0, a1, a2, a3, b0, b1, b2, b3;
- int t0, t1, t2, t3;
-
- d0 = (block[8*0] << 11) + 65536;
- d1 = block[8*1];
- d2 = block[8*2] << 11;
- d3 = block[8*3];
- t0 = d0 + d2;
- t1 = d0 - d2;
- BUTTERFLY (t2, t3, W6, W2, d3, d1);
- a0 = t0 + t2;
- a1 = t1 + t3;
- a2 = t1 - t3;
- a3 = t0 - t2;
-
- d0 = block[8*4];
- d1 = block[8*5];
- d2 = block[8*6];
- d3 = block[8*7];
- BUTTERFLY (t0, t1, W7, W1, d3, d0);
- BUTTERFLY (t2, t3, W3, W5, d1, d2);
- b0 = t0 + t2;
- b3 = t1 + t3;
- t0 -= t2;
- t1 -= t3;
- b1 = ((t0 + t1) >> 8) * 181;
- b2 = ((t0 - t1) >> 8) * 181;
-
- block[8*0] = (a0 + b0) >> 17;
- block[8*1] = (a1 + b1) >> 17;
- block[8*2] = (a2 + b2) >> 17;
- block[8*3] = (a3 + b3) >> 17;
- block[8*4] = (a3 - b3) >> 17;
- block[8*5] = (a2 - b2) >> 17;
- block[8*6] = (a1 - b1) >> 17;
- block[8*7] = (a0 - b0) >> 17;
-}
-
-void mpeg2_idct_copy (int16_t * block, uint8_t * dest,
- const int stride)
-{
- int i;
-
- for (i = 0; i < 8; i++)
- idct_row (block + 8 * i);
-
- for (i = 0; i < 8; i++)
- idct_col (block + i);
-
- do
- {
- dest[0] = CLIP (block[0]);
- dest[1] = CLIP (block[1]);
- dest[2] = CLIP (block[2]);
- dest[3] = CLIP (block[3]);
- dest[4] = CLIP (block[4]);
- dest[5] = CLIP (block[5]);
- dest[6] = CLIP (block[6]);
- dest[7] = CLIP (block[7]);
-
- ((int32_t *)block)[0] = 0;
- ((int32_t *)block)[1] = 0;
- ((int32_t *)block)[2] = 0;
- ((int32_t *)block)[3] = 0;
-
- dest += stride;
- block += 8;
- }
- while (--i);
-}
-
-void mpeg2_idct_add (const int last, int16_t * block,
- uint8_t * dest, const int stride)
-{
- int i;
-
- if (last != 129 || (block[0] & (7 << 4)) == (4 << 4))
- {
- for (i = 0; i < 8; i++)
- idct_row (block + 8 * i);
-
- for (i = 0; i < 8; i++)
- idct_col (block + i);
-
- do
- {
- dest[0] = CLIP (block[0] + dest[0]);
- dest[1] = CLIP (block[1] + dest[1]);
- dest[2] = CLIP (block[2] + dest[2]);
- dest[3] = CLIP (block[3] + dest[3]);
- dest[4] = CLIP (block[4] + dest[4]);
- dest[5] = CLIP (block[5] + dest[5]);
- dest[6] = CLIP (block[6] + dest[6]);
- dest[7] = CLIP (block[7] + dest[7]);
-
- ((int32_t *)block)[0] = 0;
- ((int32_t *)block)[1] = 0;
- ((int32_t *)block)[2] = 0;
- ((int32_t *)block)[3] = 0;
-
- dest += stride;
- block += 8;
- }
- while (--i);
- }
- else
- {
- int DC = (block[0] + 64) >> 7;
- block[0] = block[63] = 0;
- i = 8;
-
- do
- {
- dest[0] = CLIP (DC + dest[0]);
- dest[1] = CLIP (DC + dest[1]);
- dest[2] = CLIP (DC + dest[2]);
- dest[3] = CLIP (DC + dest[3]);
- dest[4] = CLIP (DC + dest[4]);
- dest[5] = CLIP (DC + dest[5]);
- dest[6] = CLIP (DC + dest[6]);
- dest[7] = CLIP (DC + dest[7]);
- dest += stride;
- }
- while (--i);
- }
-}
-
-#endif /* IDCT_ASM */
-
-void mpeg2_idct_init (void)
-{
- int i, j;
-
- for (i = 0; i < 64; i++)
- {
- j = default_mpeg2_scan_norm[i];
- mpeg2_scan_norm[i] = ((j & 0x36) >> 1) | ((j & 0x09) << 2);
-
- j = default_mpeg2_scan_alt[i];
- mpeg2_scan_alt[i] = ((j & 0x36) >> 1) | ((j & 0x09) << 2);
- }
-}
generated by cgit (git 2.34.1) at 2023-09-26 18:26:41 +0000