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-rw-r--r--src/gallium/auxiliary/vl/vl_bitstream_parser.c167
1 files changed, 0 insertions, 167 deletions
diff --git a/src/gallium/auxiliary/vl/vl_bitstream_parser.c b/src/gallium/auxiliary/vl/vl_bitstream_parser.c
deleted file mode 100644
index 3193ea5f41..0000000000
--- a/src/gallium/auxiliary/vl/vl_bitstream_parser.c
+++ /dev/null
@@ -1,167 +0,0 @@
-/**************************************************************************
- *
- * Copyright 2009 Younes Manton.
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
- * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
- * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- **************************************************************************/
-
-#include "vl_bitstream_parser.h"
-#include <assert.h>
-#include <limits.h>
-#include <util/u_memory.h>
-
-static unsigned
-grab_bits(unsigned cursor, unsigned how_many_bits, unsigned bitstream_elt)
-{
- unsigned excess_bits = sizeof(unsigned) * CHAR_BIT - how_many_bits - cursor;
-
- assert(cursor < sizeof(unsigned) * CHAR_BIT);
- assert(how_many_bits > 0 && how_many_bits <= sizeof(unsigned) * CHAR_BIT);
- assert(cursor + how_many_bits <= sizeof(unsigned) * CHAR_BIT);
-
- return (bitstream_elt << excess_bits) >> (excess_bits + cursor);
-}
-
-static unsigned
-show_bits(unsigned cursor, unsigned how_many_bits, const unsigned *bitstream)
-{
- unsigned cur_int = cursor / (sizeof(unsigned) * CHAR_BIT);
- unsigned cur_bit = cursor % (sizeof(unsigned) * CHAR_BIT);
-
- assert(bitstream);
-
- if (cur_bit + how_many_bits > sizeof(unsigned) * CHAR_BIT) {
- unsigned lower = grab_bits(cur_bit, sizeof(unsigned) * CHAR_BIT - cur_bit,
- bitstream[cur_int]);
- unsigned upper = grab_bits(0, cur_bit + how_many_bits - sizeof(unsigned) * CHAR_BIT,
- bitstream[cur_int + 1]);
- return lower | upper << (sizeof(unsigned) * CHAR_BIT - cur_bit);
- }
- else
- return grab_bits(cur_bit, how_many_bits, bitstream[cur_int]);
-}
-
-bool vl_bitstream_parser_init(struct vl_bitstream_parser *parser,
- unsigned num_bitstreams,
- const void **bitstreams,
- const unsigned *sizes)
-{
- assert(parser);
- assert(num_bitstreams);
- assert(bitstreams);
- assert(sizes);
-
- parser->num_bitstreams = num_bitstreams;
- parser->bitstreams = (const unsigned**)bitstreams;
- parser->sizes = sizes;
- parser->cur_bitstream = 0;
- parser->cursor = 0;
-
- return true;
-}
-
-void vl_bitstream_parser_cleanup(struct vl_bitstream_parser *parser)
-{
- assert(parser);
-}
-
-unsigned
-vl_bitstream_parser_get_bits(struct vl_bitstream_parser *parser,
- unsigned how_many_bits)
-{
- unsigned bits;
-
- assert(parser);
-
- bits = vl_bitstream_parser_show_bits(parser, how_many_bits);
-
- vl_bitstream_parser_forward(parser, how_many_bits);
-
- return bits;
-}
-
-unsigned
-vl_bitstream_parser_show_bits(struct vl_bitstream_parser *parser,
- unsigned how_many_bits)
-{
- unsigned bits = 0;
- unsigned shift = 0;
- unsigned cursor;
- unsigned cur_bitstream;
-
- assert(parser);
-
- cursor = parser->cursor;
- cur_bitstream = parser->cur_bitstream;
-
- while (1) {
- unsigned bits_left = parser->sizes[cur_bitstream] * CHAR_BIT - cursor;
- unsigned bits_to_show = how_many_bits > bits_left ? bits_left : how_many_bits;
-
- bits |= show_bits(cursor, bits_to_show,
- parser->bitstreams[cur_bitstream]) << shift;
-
- if (how_many_bits > bits_to_show) {
- how_many_bits -= bits_to_show;
- cursor = 0;
- ++cur_bitstream;
- shift += bits_to_show;
- }
- else
- break;
- }
-
- return bits;
-}
-
-void vl_bitstream_parser_forward(struct vl_bitstream_parser *parser,
- unsigned how_many_bits)
-{
- assert(parser);
- assert(how_many_bits);
-
- parser->cursor += how_many_bits;
-
- while (parser->cursor > parser->sizes[parser->cur_bitstream] * CHAR_BIT) {
- parser->cursor -= parser->sizes[parser->cur_bitstream++] * CHAR_BIT;
- assert(parser->cur_bitstream < parser->num_bitstreams);
- }
-}
-
-void vl_bitstream_parser_rewind(struct vl_bitstream_parser *parser,
- unsigned how_many_bits)
-{
- signed c;
-
- assert(parser);
- assert(how_many_bits);
-
- c = parser->cursor - how_many_bits;
-
- while (c < 0) {
- c += parser->sizes[parser->cur_bitstream--] * CHAR_BIT;
- assert(parser->cur_bitstream < parser->num_bitstreams);
- }
-
- parser->cursor = (unsigned)c;
-}