Major rewrite of streamer (WIP)

1 files changed, 0 insertions, 77 deletions

diff --git a/bitstream.c b/bitstream.c
deleted file mode 100644
index 43d6d2c..0000000
--- a/bitstream.c
+++ /dev/null
@@ -1,77 +0,0 @@
-/*
- * Copyright (C) 2023 Mikhail Burakov. This file is part of streamer.
- *
- * streamer 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 3 of the License, or
- * (at your option) any later version.
- *
- * streamer 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 streamer.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-#include "bitstream.h"
-
-void BitstreamAppend(struct Bitstream* bitstream, size_t size, uint32_t bits) {
-  uint8_t* ptr = (uint8_t*)bitstream->data + bitstream->size / 8;
-  size_t vacant_bits = 8 - bitstream->size % 8;
-  *ptr &= ~0 << vacant_bits;
-
-  if (vacant_bits >= size) {
-    *ptr |= bits << (vacant_bits - size);
-    bitstream->size += size;
-    return;
-  }
-
-  *ptr |= bits >> (size - vacant_bits);
-  bitstream->size += vacant_bits;
-  BitstreamAppend(bitstream, size - vacant_bits, bits);
-}
-
-void BitstreamAppendUE(struct Bitstream* bitstream, uint32_t bits) {
-  size_t size = 0;
-  uint32_t dummy = ++bits;
-  while (dummy) {
-    dummy >>= 1;
-    size++;
-  }
-  BitstreamAppend(bitstream, size - 1, 0);
-  BitstreamAppend(bitstream, size, bits);
-}
-
-void BitstreamAppendSE(struct Bitstream* bitstream, int32_t bits) {
-  BitstreamAppendUE(
-      bitstream, bits <= 0 ? (uint32_t)(-2 * bits) : (uint32_t)(2 * bits - 1));
-}
-
-void BitstreamByteAlign(struct Bitstream* bitstream) {
-  uint8_t* ptr = (uint8_t*)bitstream->data + bitstream->size / 8;
-  size_t vacant_bits = 8 - bitstream->size % 8;
-  if (vacant_bits == 8) return;
-
-  *ptr &= ~0 << vacant_bits;
-  bitstream->size += vacant_bits;
-}
-
-void BitstreamInflate(struct Bitstream* bitstream,
-                      const struct Bitstream* source) {
-  uint8_t* dst_data = (uint8_t*)bitstream->data + (bitstream->size + 7) / 8;
-  uint8_t* src_data = source->data;
-  size_t src_size = (source->size + 7) / 8;
-
-  if (src_size > 0) *dst_data++ = *src_data++;
-  if (src_size > 1) *dst_data++ = *src_data++;
-
-  for (size_t i = 2; i < src_size; i++) {
-    // mburakov: emulation_prevention_three_byte
-    if (!dst_data[-2] && !dst_data[-1] && !src_data[0]) *dst_data++ = 3;
-    *dst_data++ = *src_data++;
-  }
-
-  bitstream->size = (size_t)(dst_data - (uint8_t*)bitstream->data) * 8;
-}