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-rw-r--r--v4l2-apps/lib/libv4l/libv4lconvert/spca561-decompress.c1003
1 files changed, 0 insertions, 1003 deletions
diff --git a/v4l2-apps/lib/libv4l/libv4lconvert/spca561-decompress.c b/v4l2-apps/lib/libv4l/libv4lconvert/spca561-decompress.c
deleted file mode 100644
index 01eed4ec5..000000000
--- a/v4l2-apps/lib/libv4l/libv4lconvert/spca561-decompress.c
+++ /dev/null
@@ -1,1003 +0,0 @@
-/*
-
-# Spca561decoder (C) 2005 Andrzej Szombierski [qq@kuku.eu.org]
-
-# This program 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.
-#
-# This program 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 this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-
-# Note this code was originally licensed under the GNU GPL instead of the
-# GNU LGPL, its license has been changed with permission, see the permission
-# mail at the end of this file.
-
-*/
-
-/*
- * Decoder for compressed spca561 images
- * It was developed for "Labtec WebCam Elch 2(SPCA561A)" (046d:0929)
- * but it might work with other spca561 cameras
- */
-#include <string.h>
-#include "libv4lconvert-priv.h"
-
-/*fixme: not reentrant */
-static unsigned int bit_bucket;
-static const unsigned char *input_ptr;
-
-static inline void refill(int *bitfill)
-{
- if (*bitfill < 8) {
- bit_bucket = (bit_bucket << 8) | *(input_ptr++);
- *bitfill += 8;
- }
-}
-
-static inline int nbits(int *bitfill, int n)
-{
- bit_bucket = (bit_bucket << 8) | *(input_ptr++);
- *bitfill -= n;
- return (bit_bucket >> (*bitfill & 0xff)) & ((1 << n) - 1);
-}
-
-static inline int _nbits(int *bitfill, int n)
-{
- *bitfill -= n;
- return (bit_bucket >> (*bitfill & 0xff)) & ((1 << n) - 1);
-}
-
-static int fun_A(int *bitfill)
-{
- int ret;
- static int tab[] = {
- 12, 13, 14, 15, 16, 17, 18, 19, -12, -13, -14, -15,
- -16, -17, -18, -19, -19
- };
-
- ret = tab[nbits(bitfill, 4)];
-
- refill(bitfill);
- return ret;
-}
-static int fun_B(int *bitfill)
-{
- static int tab1[] =
- { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 31, 31,
- 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31,
- 16, 17,
- 18,
- 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30
- };
- static int tab[] =
- { 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, -5,
- -6, -7, -8, -9, -10, -11, -12, -13, -14, -15, -16, -17,
- -18, -19
- };
- unsigned int tmp;
-
- tmp = nbits(bitfill, 7) - 68;
- refill(bitfill);
- if (tmp > 47)
- return 0xff;
- return tab[tab1[tmp]];
-}
-static int fun_C(int *bitfill, int gkw)
-{
- static int tab1[] =
- { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 23, 23, 23, 23, 23, 23,
- 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23,
- 12, 13,
- 14,
- 15, 16, 17, 18, 19, 20, 21, 22
- };
- static int tab[] =
- { 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, -9, -10, -11,
- -12, -13, -14, -15, -16, -17, -18, -19
- };
- unsigned int tmp;
-
- if (gkw == 0xfe) {
- if (nbits(bitfill, 1) == 0)
- return 7;
- else
- return -8;
- }
-
- if (gkw != 0xff)
- return 0xff;
-
- tmp = nbits(bitfill, 7) - 72;
- if (tmp > 43)
- return 0xff;
-
- refill(bitfill);
- return tab[tab1[tmp]];
-}
-static int fun_D(int *bitfill, int gkw)
-{
- if (gkw == 0xfd) {
- if (nbits(bitfill, 1) == 0)
- return 12;
- return -13;
- }
-
- if (gkw == 0xfc) {
- if (nbits(bitfill, 1) == 0)
- return 13;
- return -14;
- }
-
- if (gkw == 0xfe) {
- switch (nbits(bitfill, 2)) {
- case 0:
- return 14;
- case 1:
- return -15;
- case 2:
- return 15;
- case 3:
- return -16;
- }
- }
-
- if (gkw == 0xff) {
- switch (nbits(bitfill, 3)) {
- case 4:
- return 16;
- case 5:
- return -17;
- case 6:
- return 17;
- case 7:
- return -18;
- case 2:
- return _nbits(bitfill, 1) ? 0xed : 0x12;
- case 3:
- (*bitfill)--;
- return 18;
- }
- return 0xff;
- }
- return gkw;
-}
-
-static int fun_E(int cur_byte, int *bitfill)
-{
- static int tab0[] = { 0, -1, 1, -2, 2, -3, 3, -4 };
- static int tab1[] = { 4, -5, 5, -6, 6, -7, 7, -8 };
- static int tab2[] = { 8, -9, 9, -10, 10, -11, 11, -12 };
- static int tab3[] = { 12, -13, 13, -14, 14, -15, 15, -16 };
- static int tab4[] = { 16, -17, 17, -18, 18, -19, 19, -19 };
-
- if ((cur_byte & 0xf0) >= 0x80) {
- *bitfill -= 4;
- return tab0[(cur_byte >> 4) & 7];
- }
- if ((cur_byte & 0xc0) == 0x40) {
- *bitfill -= 5;
- return tab1[(cur_byte >> 3) & 7];
-
- }
- if ((cur_byte & 0xe0) == 0x20) {
- *bitfill -= 6;
- return tab2[(cur_byte >> 2) & 7];
-
- }
- if ((cur_byte & 0xf0) == 0x10) {
- *bitfill -= 7;
- return tab3[(cur_byte >> 1) & 7];
-
- }
- if ((cur_byte & 0xf8) == 8) {
- *bitfill -= 8;
- return tab4[cur_byte & 7];
- }
- return 0xff;
-}
-
-static int fun_F(int cur_byte, int *bitfill)
-{
- *bitfill -= 5;
- switch (cur_byte & 0xf8) {
- case 0x80:
- return 0;
- case 0x88:
- return -1;
- case 0x90:
- return 1;
- case 0x98:
- return -2;
- case 0xa0:
- return 2;
- case 0xa8:
- return -3;
- case 0xb0:
- return 3;
- case 0xb8:
- return -4;
- case 0xc0:
- return 4;
- case 0xc8:
- return -5;
- case 0xd0:
- return 5;
- case 0xd8:
- return -6;
- case 0xe0:
- return 6;
- case 0xe8:
- return -7;
- case 0xf0:
- return 7;
- case 0xf8:
- return -8;
- }
-
- *bitfill -= 1;
- switch (cur_byte & 0xfc) {
- case 0x40:
- return 8;
- case 0x44:
- return -9;
- case 0x48:
- return 9;
- case 0x4c:
- return -10;
- case 0x50:
- return 10;
- case 0x54:
- return -11;
- case 0x58:
- return 11;
- case 0x5c:
- return -12;
- case 0x60:
- return 12;
- case 0x64:
- return -13;
- case 0x68:
- return 13;
- case 0x6c:
- return -14;
- case 0x70:
- return 14;
- case 0x74:
- return -15;
- case 0x78:
- return 15;
- case 0x7c:
- return -16;
- }
-
- *bitfill -= 1;
- switch (cur_byte & 0xfe) {
- case 0x20:
- return 16;
- case 0x22:
- return -17;
- case 0x24:
- return 17;
- case 0x26:
- return -18;
- case 0x28:
- return 18;
- case 0x2a:
- return -19;
- case 0x2c:
- return 19;
- }
-
- *bitfill += 7;
- return 0xff;
-}
-
-static int internal_spca561_decode(int width, int height,
- const unsigned char *inbuf,
- unsigned char *outbuf)
-{
- /* buffers */
- static int accum[8 * 8 * 8];
- static int i_hits[8 * 8 * 8];
-
- const int nbits_A[] =
- { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1,
- 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1,
- 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1,
- 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1,
- 1, 1, 1, 1, 1,
- 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 0, 0, 7, 7,
- 7, 7,
- 7, 7, 7, 7, 7,
- 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
- 3, 3,
- 3, 3, 3, 3, 3,
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
- 5, 5,
- 5, 5, 5, 5, 5,
- 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3,
- 3, 3,
- 3, 3, 3, 3, 3,
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
- };
- const int tab_A[] =
- { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0, 11, -11, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9,
- 10, 10,
- 255, 254, -4,
- -4, -5, -5, -6, -6, -7, -7, -8, -8, -9, -9, -10, -10, -1,
- -1, -1,
- -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1,
- -1, -1,
- -1, -1, -1, -1, -1, -1, -1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3,
- 3, 3, 3,
- 3, 3, 3,
- -2, -2, -2, -2, -2, -2, -2, -2, -3, -3, -3, -3, -3, -3, -3,
- -3, 1,
- 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1,
- 1, 1, 1, 1,
- 1
- };
-
- const int nbits_B[] =
- { 0, 8, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4,
- 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3,
- 3, 3,
- 3, 3, 3, 3, 3,
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2,
- 2, 2,
- 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2,
- 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2,
- 2, 2, 2, 2, 2,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1,
- 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1,
- 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1,
- 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1,
- 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- };
- const int tab_B[] =
- { 0xff, -4, 3, 3, -3, -3, -3, -3, 2, 2, 2, 2, 2, 2, 2, 2, -2,
- -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
- 1, 1,
- 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1,
- 1, 1, 1, 1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1,
- -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1,
- -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1,
- -1, -1,
- -1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0,
- };
-
- const int nbits_C[] =
- { 0, 0, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5,
- 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4,
- 4, 4,
- 4, 4, 4, 4, 4,
- 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3,
- 3, 3,
- 3, 3, 3, 3, 3,
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
- 3, 3,
- 3, 3, 3, 3, 3,
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
- 3, 3,
- 3, 3, 3, 3, 3,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2,
- 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2,
- 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2,
- 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2,
- 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- };
- const int tab_C[] =
- { 0xff, 0xfe, 6, -7, 5, 5, -6, -6, 4, 4, 4, 4, -5, -5, -5, -5,
- 3, 3, 3, 3, 3, 3, 3, 3, -4, -4, -4, -4, -4, -4, -4, -4, 2,
- 2, 2, 2,
- 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, -3, -3, -3, -3, -3, -3, -3, -3,
- -3, -3,
- -3, -3, -3,
- -3, -3, -3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1,
- 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, -2, -2, -2, -2, -2, -2, -2,
- -2, -2,
- -2, -2, -2,
- -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
- -2, -2,
- -2, -2,
- -2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, -1, -1, -1, -1,
- -1, -1,
- -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1,
- -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1,
- -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1,
- };
-
- const int nbits_D[] =
- { 0, 0, 0, 0, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6,
- 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5,
- 5, 5,
- 5, 5, 5, 5, 5,
- 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4,
- 4, 4,
- 4, 4, 4, 4, 4,
- 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
- 4, 4,
- 4, 4, 4, 4, 4,
- 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
- 4, 4,
- 4, 4, 4, 4, 4,
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
- 3, 3,
- 3, 3, 3, 3, 3,
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
- 3, 3,
- 3, 3, 3, 3, 3,
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
- 3, 3,
- 3, 3, 3, 3, 3,
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
- 3, 3,
- 3, 3, 3, 3, 3,
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3
- };
- const int tab_D[] =
- { 0xff, 0xfe, 0xfd, 0xfc, 10, -11, 11, -12, 8, 8, -9, -9, 9, 9,
- -10, -10, 6, 6, 6, 6, -7, -7, -7, -7, 7, 7, 7, 7, -8, -8,
- -8, -8,
- 4, 4, 4, 4,
- 4, 4, 4, 4, -5, -5, -5, -5, -5, -5, -5, -5, 5, 5, 5, 5, 5,
- 5, 5, 5,
- -6, -6,
- -6, -6, -6, -6, -6, -6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2,
- 2, 2, -3,
- -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3,
- 3, 3,
- 3, 3, 3, 3,
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, -4, -4, -4, -4, -4, -4, -4,
- -4, -4,
- -4, -4, -4,
- -4, -4, -4, -4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, -1, -1, -1, -1, -1,
- -1, -1,
- -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1,
- -1, -1,
- -1, -1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1,
- 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, -2, -2, -2, -2, -2, -2, -2, -2,
- -2, -2,
- -2, -2, -2,
- -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
- -2, -2,
- -2, -2
- };
-
- /* a_curve[19 + i] = ... [-19..19] => [-160..160] */
- const int a_curve[] =
- { -160, -144, -128, -112, -98, -88, -80, -72, -64, -56, -48,
- -40, -32, -24, -18, -12, -8, -5, -2, 0, 2, 5, 8, 12, 18,
- 24, 32,
- 40, 48, 56, 64,
- 72, 80, 88, 98, 112, 128, 144, 160
- };
- /* clamp0_255[256 + i] = min(max(i,255),0) */
- const unsigned char clamp0_255[] =
- { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 1, 2,
- 3, 4, 5, 6, 7, 8, 9, 10,
- 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,
- 26, 27,
- 28, 29, 30, 31, 32, 33,
- 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48,
- 49, 50,
- 51, 52, 53, 54, 55, 56,
- 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71,
- 72, 73,
- 74, 75, 76, 77, 78, 79,
- 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94,
- 95, 96,
- 97, 98, 99, 100, 101,
- 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113,
- 114,
- 115, 116, 117, 118, 119,
- 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131,
- 132,
- 133, 134, 135, 136, 137,
- 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149,
- 150,
- 151, 152, 153, 154, 155,
- 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167,
- 168,
- 169, 170, 171, 172, 173,
- 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185,
- 186,
- 187, 188, 189, 190, 191,
- 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203,
- 204,
- 205, 206, 207, 208, 209,
- 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221,
- 222,
- 223, 224, 225, 226, 227,
- 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239,
- 240,
- 241, 242, 243, 244, 245,
- 246, 247, 248, 249, 250, 251, 252, 253, 254, 255, 255, 255,
- 255,
- 255, 255, 255, 255, 255,
- 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
- 255,
- 255, 255, 255, 255, 255,
- 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
- 255,
- 255, 255, 255, 255, 255,
- 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
- 255,
- 255, 255, 255, 255, 255,
- 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
- 255,
- 255, 255, 255, 255, 255,
- 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
- 255,
- 255, 255, 255, 255, 255,
- 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
- 255,
- 255, 255, 255, 255, 255,
- 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
- 255,
- 255, 255, 255, 255, 255,
- 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
- 255,
- 255, 255, 255, 255, 255,
- 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
- 255,
- 255, 255, 255, 255, 255,
- 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
- 255,
- 255, 255, 255, 255, 255,
- 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
- 255,
- 255, 255, 255, 255, 255,
- 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
- 255,
- 255, 255, 255, 255, 255,
- 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
- 255,
- 255, 255, 255, 255, 255,
- 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
- 255,
- 255
- };
- /* abs_clamp15[19 + i] = min(abs(i), 15) */
- const int abs_clamp15[] =
- { 15, 15, 15, 15, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3,
- 2, 1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
- 15, 15,
- 15
- };
- /* diff_encoding[256 + i] = ... */
- const int diff_encoding[] =
- { 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
- 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
- 7, 7,
- 7, 7, 7, 7, 7, 7, 7,
- 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
- 7, 7,
- 7, 7, 7, 7, 7, 7, 7,
- 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
- 7, 7,
- 7, 7, 7, 7, 7, 7, 7,
- 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
- 7, 7,
- 7, 7, 7, 7, 7, 7, 7,
- 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
- 7, 7,
- 7, 7, 7, 7, 7, 7, 7,
- 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
- 7, 7,
- 7, 7, 7, 7, 7, 7, 7,
- 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
- 7, 7,
- 7, 7, 7, 7, 7, 7, 7,
- 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5,
- 5, 5,
- 5, 5, 5, 5, 5, 3, 3,
- 3, 3, 1, 1, 0, 2, 2, 4, 4, 4, 4, 6, 6, 6, 6, 6, 6, 6, 6, 6,
- 6, 6,
- 6, 6, 6, 6, 6, 6, 6,
- 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
- 6, 6,
- 6, 6, 6, 6, 6, 6, 6,
- 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
- 6, 6,
- 6, 6, 6, 6, 6, 6, 6,
- 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
- 6, 6,
- 6, 6, 6, 6, 6, 6, 6,
- 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
- 6, 6,
- 6, 6, 6, 6, 6, 6, 6,
- 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
- 6, 6,
- 6, 6, 6, 6, 6, 6, 6,
- 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
- 6, 6,
- 6, 6, 6, 6, 6, 6, 6,
- 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
- 6, 6,
- 6, 6, 6, 6, 6, 6, 6,
- 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
- 6, 6,
- 6, 6, 6, 6, 6, 6
- };
-
- int block;
- int bitfill = 0;
- int xwidth = width + 6;
- int off_up_right = 2 - 2 * xwidth;
- int off_up_left = -2 - 2 * xwidth;
- int pixel_U = 0, saved_pixel_UR = 0;
- int pixel_x = 0, pixel_y = 2;
- unsigned char *output_ptr = outbuf;
-
- memset(i_hits, 0, sizeof(i_hits));
- memset(accum, 0, sizeof(accum));
-
- memcpy(outbuf + xwidth * 2 + 3, inbuf + 0x14, width);
- memcpy(outbuf + xwidth * 3 + 3, inbuf + 0x14 + width, width);
-
- input_ptr = inbuf + 0x14 + width * 2;
- output_ptr = outbuf + (xwidth) * 4 + 3;
-
- bit_bucket = 0;
-
- for (block = 0; block < ((height - 2) * width) / 32; ++block) {
- int b_it, var_7 = 0;
- int cur_byte;
-
- refill(&bitfill);
-
- cur_byte = (bit_bucket >> (bitfill & 7)) & 0xff;
-
- if ((cur_byte & 0x80) == 0) {
- var_7 = 0;
- bitfill--;
- } else if ((cur_byte & 0xC0) == 0x80) {
- var_7 = 1;
- bitfill -= 2;
- } else if ((cur_byte & 0xc0) == 0xc0) {
- var_7 = 2;
- bitfill -= 2;
- }
-
- for (b_it = 0; b_it < 32; b_it++) {
- int index;
- int pixel_L, pixel_UR, pixel_UL;
- int multiplier;
- int dL, dC, dR;
- int gkw; /* God knows what */
-
- refill(&bitfill);
- cur_byte = bit_bucket >> (bitfill & 7) & 0xff;
-
- pixel_L = output_ptr[-2];
- pixel_UR = output_ptr[off_up_right];
- pixel_UL = output_ptr[off_up_left];
-
- dL = diff_encoding[0x100 + pixel_UL - pixel_L];
- dC = diff_encoding[0x100 + pixel_U - pixel_UL];
- dR = diff_encoding[0x100 + pixel_UR - pixel_U];
-
- if (pixel_x < 2) {
- pixel_L = pixel_UL = pixel_U =
- output_ptr[-xwidth * 2];
- pixel_UR = output_ptr[off_up_right];
- dL = dC = 0;
- dR = diff_encoding[0x100 + pixel_UR -
- pixel_U];
- } else if (pixel_x > width - 3)
- dR = 0;
-
- multiplier = 4;
- index = dR + dC * 8 + dL * 64;
-
- if (pixel_L + pixel_U * 2 <= 144
- && (pixel_y & 1) == 0
- && (b_it & 3) == 0 && (dR < 5) && (dC < 5)
- && (dL < 5)) {
- multiplier = 1;
- } else if (pixel_L <= 48
- && dL <= 4 && dC <= 4 && dL >= 1
- && dC >= 1) {
- multiplier = 2;
- } else if (var_7 == 1) {
- multiplier = 2;
- } else if (dC + dL >= 11 || var_7 == 2) {
- multiplier = 8;
- }
-
- if (i_hits[index] < 7) {
- bitfill -= nbits_A[cur_byte];
- gkw = tab_A[cur_byte];
- if (gkw == 0xfe)
- gkw = fun_A(&bitfill);
- } else if (i_hits[index] >= accum[index]) {
- bitfill -= nbits_B[cur_byte];
- gkw = tab_B[cur_byte];
- if (cur_byte == 0)
- gkw = fun_B(&bitfill);
- } else if (i_hits[index] * 2 >= accum[index]) {
- bitfill -= nbits_C[cur_byte];
- gkw = tab_C[cur_byte];
- if (cur_byte < 2)
- gkw = fun_C(&bitfill, gkw);
- } else if (i_hits[index] * 4 >= accum[index]) {
- bitfill -= nbits_D[cur_byte];
- gkw = tab_D[cur_byte];
- if (cur_byte < 4)
- gkw = fun_D(&bitfill, gkw);
- } else if (i_hits[index] * 8 >= accum[index]) {
- gkw = fun_E(cur_byte, &bitfill);
- } else {
- gkw = fun_F(cur_byte, &bitfill);
- }
-
- if (gkw == 0xff)
- return -3;
-
- {
- int tmp1, tmp2;
-
- tmp1 =
- (pixel_U + pixel_L) * 3 - pixel_UL * 2;
- tmp1 += (tmp1 < 0) ? 3 : 0;
- tmp2 = a_curve[19 + gkw] * multiplier;
- tmp2 += (tmp2 < 0) ? 1 : 0;
-
- *(output_ptr++) =
- clamp0_255[0x100 + (tmp1 >> 2) -
- (tmp2 >> 1)];
- }
- pixel_U = saved_pixel_UR;
- saved_pixel_UR = pixel_UR;
-
- if (++pixel_x == width) {
- output_ptr += 6;
- pixel_x = 0;
- pixel_y++;
- }
-
- accum[index] += abs_clamp15[19 + gkw];
-
- if (i_hits[index]++ == 15) {
- i_hits[index] = 8;
- accum[index] /= 2;
- }
- }
- }
- return 0;
-}
-
-/* FIXME, change internal_spca561_decode not to need the extra border
- around its dest buffer */
-void v4lconvert_decode_spca561(const unsigned char *inbuf,
- unsigned char *outbuf, int width, int height)
-{
- int i;
- static unsigned char tmpbuf[650 * 490];
- if (internal_spca561_decode(width, height, inbuf, tmpbuf) != 0)
- return;
- for (i = 0; i < height; i++)
- memcpy(outbuf + i * width,
- tmpbuf + (i + 2) * (width + 6) + 3, width);
-}
-
-/*************** License Change Permission Notice ***************
-
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-Date: Mon, 16 Jun 2008 16:29:37 +0200 (CEST)
-From: Andrzej Szombierski <qq@kuku.eu.org>
-To: Hans de Goede <j.w.r.degoede@hhs.nl>
-Subject: Re: spca561 decoder license question
-In-Reply-To: <485673B6.4050003@hhs.nl>
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-
-On Mon, 16 Jun 2008, Hans de Goede wrote:
-
-> Hi,
->=20
-> I don't know if you're still subscribed to the spca devel mailing list, s=
-o let=20
-> me start with a short intro.
->
-> I'm a Linux enthusiast / developer currently helping Jean-Fran=E7ois Moin=
-e with=20
-> porting gspca to video4linux2 and cleaning up the code to get it ready fo=
-r=20
-> mainline kernel inclusion.
->=20
-> As part of this process the decompression code for all supported cams mus=
-t be=20
-> moved to userspace, as doing in kernel decompression is considered unwant=
-ed by=20
-> the mainline people (I agree) as it should be done in userspace.
->
-
-Sounds reasonable.
-=20
-> As such I'm working on a library which does decompression of custom cam f=
-ormats=20
-> in userspace.
->
-
-Nice. I hope that the library won't be limited to spca-supported webcams,=
-=20
-and as an application developer I would be able to just request RGB data=20
-from any /dev/video*, right?
-
-> I do not want to license this library as GPL (as the current spca code is=
-), as=20
-> it should be usable by as much software as possible. Instead I want to li=
-cense=20
-> it under the LGPL version 2.1 or later.
-
-Also sounds reasonable.
-
->=20
-> So my question us my I have your permission to relicense your spca561=20
-> decompression code under the LGPL?
->=20
-
-Yes, of course.=20
-
-> Thanks & Regards,
->=20
-> Hans
->=20
->
-
---=20
-:: Andrzej Szombierski :: qq@kuku.eu.org :: http://kuku.eu.org ::
-:: anszom@bezkitu.com :: radio bez kitu :: http://bezkitu.com ::
-
-*/
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-08 04:04:09 +0000