X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=bitstream.c;h=e081d0cf61ad7b711065d3d7c4844a3a9691f148;hp=23adb2bd28912bd3364234b2a367d562ced1740e;hb=a4ae014c7b47509d236ddc7a63a3510079470382;hpb=723d3c6d7722747f4c3167a31a28cfdfd3793ab4 diff --git a/bitstream.c b/bitstream.c index 23adb2bd..e081d0cf 100644 --- a/bitstream.c +++ b/bitstream.c @@ -57,10 +57,9 @@ static int alloc_table(struct vlc *vlc, int size) return idx; } -static int build_table(struct vlc *vlc, int table_nb_bits, - int nb_codes, const void *bits, int bits_wrap, int bits_size, - const void *codes, int codes_wrap, int codes_size, - uint32_t code_prefix, int n_prefix) +static int build_table(struct vlc *vlc, int table_nb_bits, int nb_codes, + const void *bits, const void *codes, int codes_wrap, + int codes_size, uint32_t code_prefix, int n_prefix) { int ret, i, j, k, n, table_size, table_index, nb, n1, idx, code_prefix2, symbol; @@ -81,7 +80,7 @@ static int build_table(struct vlc *vlc, int table_nb_bits, /* first pass: map codes and compute auxillary table sizes */ for (i = 0; i < nb_codes; i++) { - GET_DATA(n, bits, i, bits_wrap, bits_size); + GET_DATA(n, bits, i, 1, 1); GET_DATA(code, codes, i, codes_wrap, codes_size); /* we accept tables with holes */ if (n <= 0) @@ -124,8 +123,7 @@ static int build_table(struct vlc *vlc, int table_nb_bits, table[i][1] = -n; //bits } ret = build_table(vlc, n, nb_codes, - bits, bits_wrap, bits_size, - codes, codes_wrap, codes_size, + bits, codes, codes_wrap, codes_size, (code_prefix << table_nb_bits) | i, n_prefix + table_nb_bits); if (ret < 0) @@ -155,22 +153,18 @@ static int build_table(struct vlc *vlc, int table_nb_bits, * \param codes Table which gives the bit pattern of of each * vlc code. * - * \param bits_wrap The number of bytes between each entry of the - * 'bits' or 'codes' tables. + * \param codes_wrap The number of bytes between each entry of the + * 'codes' tables. * - * \param bits_size The number of bytes of each entry of the - * 'bits' or 'codes' tables. - * - * \param codes_wrap Same as bits_wrap but uses the 'codes' table. - * - * \param codes_size Same as bits_size but for the 'codes' table. + * \param codes_size The number of bytes of each entry of the + * 'codes' tables. * * The wrap and size parameters allow to use any memory configuration and * types (byte/word/long) to store the bits and codes tables. */ int init_vlc(struct vlc *vlc, int nb_bits, int nb_codes, - const void *bits, int bits_wrap, int bits_size, - const void *codes, int codes_wrap, int codes_size) + const void *bits, const void *codes, int codes_wrap, + int codes_size) { int ret; @@ -179,7 +173,7 @@ int init_vlc(struct vlc *vlc, int nb_bits, int nb_codes, vlc->table = NULL; vlc->table_allocated = 0; vlc->table_size = 0; - ret = build_table(vlc, nb_bits, nb_codes, bits, bits_wrap, bits_size, + ret = build_table(vlc, nb_bits, nb_codes, bits, codes, codes_wrap, codes_size, 0, 0); if (ret < 0) freep(&vlc->table);