diff options
Diffstat (limited to 'converter/other/cameratopam/decode.c')
| -rw-r--r-- | converter/other/cameratopam/decode.c | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/converter/other/cameratopam/decode.c b/converter/other/cameratopam/decode.c new file mode 100644 index 00000000..e3a62fab --- /dev/null +++ b/converter/other/cameratopam/decode.c @@ -0,0 +1,172 @@ +#include <string.h> + +#include "pm_c_util.h" +#include "pm.h" + +#include "decode.h" + +struct decode first_decode[2048], *second_decode, *free_decode; + + + +void init_decoder() { + memset (first_decode, 0, sizeof first_decode); + free_decode = first_decode; +} + + + +/* + Construct a decode tree according the specification in *source. + The first 16 bytes specify how many codes should be 1-bit, 2-bit + 3-bit, etc. Bytes after that are the leaf values. + + For example, if the source is + + { 0,1,4,2,3,1,2,0,0,0,0,0,0,0,0,0, + 0x04,0x03,0x05,0x06,0x02,0x07,0x01,0x08,0x09,0x00,0x0a,0x0b,0xff }, + + then the code is + + 00 0x04 + 010 0x03 + 011 0x05 + 100 0x06 + 101 0x02 + 1100 0x07 + 1101 0x01 + 11100 0x08 + 11101 0x09 + 11110 0x00 + 111110 0x0a + 1111110 0x0b + 1111111 0xff + */ + + +unsigned char * +make_decoder(const unsigned char * const source, + int const level) { + + struct decode *cur; + static int leaf; + int i, next; + + if (level==0) + leaf=0; + cur = free_decode++; + if (free_decode > first_decode+2048) { + pm_error ("decoder table overflow"); + } + for (i=next=0; i <= leaf && next < 16; ) + i += source[next++]; + if (i > leaf) { + if (level < next) { + cur->branch[0] = free_decode; + make_decoder (source, level+1); + cur->branch[1] = free_decode; + make_decoder (source, level+1); + } else + cur->leaf = source[16 + leaf++]; + } + return (unsigned char *) source + 16 + leaf; +} + + + +const int * +make_decoder_int(const int * const source, + int const level) { + + const int * p; + struct decode *cur; + + p = source; /* initial value */ + + cur = free_decode++; + if (level < p[0]) { + cur->branch[0] = free_decode; + p = make_decoder_int (p, level+1); + cur->branch[1] = free_decode; + p = make_decoder_int (p, level+1); + } else { + cur->leaf = p[1]; + p += 2; + } + return p; +} + + + +void +crw_init_tables(unsigned int const table) { + + unsigned int const clippedTableNum = MIN(2, table); + + static const unsigned char first_tree[3][29] = { + { 0,1,4,2,3,1,2,0,0,0,0,0,0,0,0,0, + 0x04,0x03,0x05,0x06,0x02,0x07,0x01,0x08,0x09,0x00,0x0a,0x0b,0xff }, + + { 0,2,2,3,1,1,1,1,2,0,0,0,0,0,0,0, + 0x03,0x02,0x04,0x01,0x05,0x00,0x06,0x07,0x09,0x08,0x0a,0x0b,0xff }, + + { 0,0,6,3,1,1,2,0,0,0,0,0,0,0,0,0, + 0x06,0x05,0x07,0x04,0x08,0x03,0x09,0x02,0x00,0x0a,0x01,0x0b,0xff }, + }; + + static const unsigned char second_tree[3][180] = { + { 0,2,2,2,1,4,2,1,2,5,1,1,0,0,0,139, + 0x03,0x04,0x02,0x05,0x01,0x06,0x07,0x08, + 0x12,0x13,0x11,0x14,0x09,0x15,0x22,0x00,0x21,0x16,0x0a,0xf0, + 0x23,0x17,0x24,0x31,0x32,0x18,0x19,0x33,0x25,0x41,0x34,0x42, + 0x35,0x51,0x36,0x37,0x38,0x29,0x79,0x26,0x1a,0x39,0x56,0x57, + 0x28,0x27,0x52,0x55,0x58,0x43,0x76,0x59,0x77,0x54,0x61,0xf9, + 0x71,0x78,0x75,0x96,0x97,0x49,0xb7,0x53,0xd7,0x74,0xb6,0x98, + 0x47,0x48,0x95,0x69,0x99,0x91,0xfa,0xb8,0x68,0xb5,0xb9,0xd6, + 0xf7,0xd8,0x67,0x46,0x45,0x94,0x89,0xf8,0x81,0xd5,0xf6,0xb4, + 0x88,0xb1,0x2a,0x44,0x72,0xd9,0x87,0x66,0xd4,0xf5,0x3a,0xa7, + 0x73,0xa9,0xa8,0x86,0x62,0xc7,0x65,0xc8,0xc9,0xa1,0xf4,0xd1, + 0xe9,0x5a,0x92,0x85,0xa6,0xe7,0x93,0xe8,0xc1,0xc6,0x7a,0x64, + 0xe1,0x4a,0x6a,0xe6,0xb3,0xf1,0xd3,0xa5,0x8a,0xb2,0x9a,0xba, + 0x84,0xa4,0x63,0xe5,0xc5,0xf3,0xd2,0xc4,0x82,0xaa,0xda,0xe4, + 0xf2,0xca,0x83,0xa3,0xa2,0xc3,0xea,0xc2,0xe2,0xe3,0xff,0xff }, + + { 0,2,2,1,4,1,4,1,3,3,1,0,0,0,0,140, + 0x02,0x03,0x01,0x04,0x05,0x12,0x11,0x06, + 0x13,0x07,0x08,0x14,0x22,0x09,0x21,0x00,0x23,0x15,0x31,0x32, + 0x0a,0x16,0xf0,0x24,0x33,0x41,0x42,0x19,0x17,0x25,0x18,0x51, + 0x34,0x43,0x52,0x29,0x35,0x61,0x39,0x71,0x62,0x36,0x53,0x26, + 0x38,0x1a,0x37,0x81,0x27,0x91,0x79,0x55,0x45,0x28,0x72,0x59, + 0xa1,0xb1,0x44,0x69,0x54,0x58,0xd1,0xfa,0x57,0xe1,0xf1,0xb9, + 0x49,0x47,0x63,0x6a,0xf9,0x56,0x46,0xa8,0x2a,0x4a,0x78,0x99, + 0x3a,0x75,0x74,0x86,0x65,0xc1,0x76,0xb6,0x96,0xd6,0x89,0x85, + 0xc9,0xf5,0x95,0xb4,0xc7,0xf7,0x8a,0x97,0xb8,0x73,0xb7,0xd8, + 0xd9,0x87,0xa7,0x7a,0x48,0x82,0x84,0xea,0xf4,0xa6,0xc5,0x5a, + 0x94,0xa4,0xc6,0x92,0xc3,0x68,0xb5,0xc8,0xe4,0xe5,0xe6,0xe9, + 0xa2,0xa3,0xe3,0xc2,0x66,0x67,0x93,0xaa,0xd4,0xd5,0xe7,0xf8, + 0x88,0x9a,0xd7,0x77,0xc4,0x64,0xe2,0x98,0xa5,0xca,0xda,0xe8, + 0xf3,0xf6,0xa9,0xb2,0xb3,0xf2,0xd2,0x83,0xba,0xd3,0xff,0xff }, + + { 0,0,6,2,1,3,3,2,5,1,2,2,8,10,0,117, + 0x04,0x05,0x03,0x06,0x02,0x07,0x01,0x08, + 0x09,0x12,0x13,0x14,0x11,0x15,0x0a,0x16,0x17,0xf0,0x00,0x22, + 0x21,0x18,0x23,0x19,0x24,0x32,0x31,0x25,0x33,0x38,0x37,0x34, + 0x35,0x36,0x39,0x79,0x57,0x58,0x59,0x28,0x56,0x78,0x27,0x41, + 0x29,0x77,0x26,0x42,0x76,0x99,0x1a,0x55,0x98,0x97,0xf9,0x48, + 0x54,0x96,0x89,0x47,0xb7,0x49,0xfa,0x75,0x68,0xb6,0x67,0x69, + 0xb9,0xb8,0xd8,0x52,0xd7,0x88,0xb5,0x74,0x51,0x46,0xd9,0xf8, + 0x3a,0xd6,0x87,0x45,0x7a,0x95,0xd5,0xf6,0x86,0xb4,0xa9,0x94, + 0x53,0x2a,0xa8,0x43,0xf5,0xf7,0xd4,0x66,0xa7,0x5a,0x44,0x8a, + 0xc9,0xe8,0xc8,0xe7,0x9a,0x6a,0x73,0x4a,0x61,0xc7,0xf4,0xc6, + 0x65,0xe9,0x72,0xe6,0x71,0x91,0x93,0xa6,0xda,0x92,0x85,0x62, + 0xf3,0xc5,0xb2,0xa4,0x84,0xba,0x64,0xa5,0xb3,0xd2,0x81,0xe5, + 0xd3,0xaa,0xc4,0xca,0xf2,0xb1,0xe4,0xd1,0x83,0x63,0xea,0xc3, + 0xe2,0x82,0xf1,0xa3,0xc2,0xa1,0xc1,0xe3,0xa2,0xe1,0xff,0xff } + }; + + init_decoder(); + make_decoder ( first_tree[clippedTableNum], 0); + second_decode = free_decode; + make_decoder (second_tree[clippedTableNum], 0); +} + |