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authorMatt A. Tobin <email@mattatobin.com>2020-04-07 23:30:51 -0400
committerwolfbeast <mcwerewolf@wolfbeast.com>2020-04-14 13:26:42 +0200
commit277f2116b6660e9bbe7f5d67524be57eceb49b8b (patch)
tree4595f7cc71418f71b9a97dfaeb03a30aa60f336a /third_party/aom/aom_dsp/bitwriter_buffer.c
parentd270404436f6e84ffa3b92af537ac721bf10d66e (diff)
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Move aom source to a sub-directory under media/libaom
There is no damned reason to treat this differently than any other media lib given its license and there never was.
Diffstat (limited to 'third_party/aom/aom_dsp/bitwriter_buffer.c')
-rw-r--r--third_party/aom/aom_dsp/bitwriter_buffer.c87
1 files changed, 0 insertions, 87 deletions
diff --git a/third_party/aom/aom_dsp/bitwriter_buffer.c b/third_party/aom/aom_dsp/bitwriter_buffer.c
deleted file mode 100644
index 596246deb..000000000
--- a/third_party/aom/aom_dsp/bitwriter_buffer.c
+++ /dev/null
@@ -1,87 +0,0 @@
-/*
- * Copyright (c) 2016, Alliance for Open Media. All rights reserved
- *
- * This source code is subject to the terms of the BSD 2 Clause License and
- * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
- * was not distributed with this source code in the LICENSE file, you can
- * obtain it at www.aomedia.org/license/software. If the Alliance for Open
- * Media Patent License 1.0 was not distributed with this source code in the
- * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
- */
-
-#include <assert.h>
-#include <limits.h>
-#include <stdlib.h>
-
-#include "config/aom_config.h"
-
-#include "aom_dsp/bitwriter_buffer.h"
-
-int aom_wb_is_byte_aligned(const struct aom_write_bit_buffer *wb) {
- return (wb->bit_offset % CHAR_BIT == 0);
-}
-
-uint32_t aom_wb_bytes_written(const struct aom_write_bit_buffer *wb) {
- return wb->bit_offset / CHAR_BIT + (wb->bit_offset % CHAR_BIT > 0);
-}
-
-void aom_wb_write_bit(struct aom_write_bit_buffer *wb, int bit) {
- const int off = (int)wb->bit_offset;
- const int p = off / CHAR_BIT;
- const int q = CHAR_BIT - 1 - off % CHAR_BIT;
- if (q == CHAR_BIT - 1) {
- // Zero next char and write bit
- wb->bit_buffer[p] = bit << q;
- } else {
- wb->bit_buffer[p] &= ~(1 << q);
- wb->bit_buffer[p] |= bit << q;
- }
- wb->bit_offset = off + 1;
-}
-
-void aom_wb_overwrite_bit(struct aom_write_bit_buffer *wb, int bit) {
- // Do not zero bytes but overwrite exisiting values
- const int off = (int)wb->bit_offset;
- const int p = off / CHAR_BIT;
- const int q = CHAR_BIT - 1 - off % CHAR_BIT;
- wb->bit_buffer[p] &= ~(1 << q);
- wb->bit_buffer[p] |= bit << q;
- wb->bit_offset = off + 1;
-}
-
-void aom_wb_write_literal(struct aom_write_bit_buffer *wb, int data, int bits) {
- assert(bits <= 31);
- int bit;
- for (bit = bits - 1; bit >= 0; bit--) aom_wb_write_bit(wb, (data >> bit) & 1);
-}
-
-void aom_wb_write_unsigned_literal(struct aom_write_bit_buffer *wb,
- uint32_t data, int bits) {
- assert(bits <= 32);
- int bit;
- for (bit = bits - 1; bit >= 0; bit--) aom_wb_write_bit(wb, (data >> bit) & 1);
-}
-
-void aom_wb_overwrite_literal(struct aom_write_bit_buffer *wb, int data,
- int bits) {
- int bit;
- for (bit = bits - 1; bit >= 0; bit--)
- aom_wb_overwrite_bit(wb, (data >> bit) & 1);
-}
-
-void aom_wb_write_inv_signed_literal(struct aom_write_bit_buffer *wb, int data,
- int bits) {
- aom_wb_write_literal(wb, data, bits + 1);
-}
-
-void aom_wb_write_uvlc(struct aom_write_bit_buffer *wb, uint32_t v) {
- int64_t shift_val = ++v;
- int leading_zeroes = 1;
-
- assert(shift_val > 0);
-
- while (shift_val >>= 1) leading_zeroes += 2;
-
- aom_wb_write_literal(wb, 0, leading_zeroes >> 1);
- aom_wb_write_unsigned_literal(wb, v, (leading_zeroes + 1) >> 1);
-}