mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
31fca20085
This updates our in-tree copy of libvpx to the v1.3.0 git tag (2e88f2f2ec777259bda1714e72f1ecd2519bceb5) libvpx 1.3.0 adds support for VP9. VP9 support is built but not yet exposed with this commit. Our update.sh script is replaced with update.py that can update the build system to a given git commit. - checkout out upstream git - create platform dependend config files - add/remove changed libvpx files - update moz.build - warn about new build categories in libvpx
49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
/*
|
|
* Copyright (c) 2013 The WebM project authors. All Rights Reserved.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license
|
|
* that can be found in the LICENSE file in the root of the source
|
|
* tree. An additional intellectual property rights grant can be found
|
|
* in the file PATENTS. All contributing project authors may
|
|
* be found in the AUTHORS file in the root of the source tree.
|
|
*/
|
|
|
|
#ifndef VP9_BIT_WRITE_BUFFER_H_
|
|
#define VP9_BIT_WRITE_BUFFER_H_
|
|
|
|
#include <limits.h>
|
|
|
|
#include "vpx/vpx_integer.h"
|
|
|
|
struct vp9_write_bit_buffer {
|
|
uint8_t *bit_buffer;
|
|
size_t bit_offset;
|
|
};
|
|
|
|
static size_t vp9_rb_bytes_written(struct vp9_write_bit_buffer *wb) {
|
|
return wb->bit_offset / CHAR_BIT + (wb->bit_offset % CHAR_BIT > 0);
|
|
}
|
|
|
|
static void vp9_wb_write_bit(struct vp9_write_bit_buffer *wb, int bit) {
|
|
const int off = wb->bit_offset;
|
|
const int p = off / CHAR_BIT;
|
|
const int q = CHAR_BIT - 1 - off % CHAR_BIT;
|
|
if (q == CHAR_BIT -1) {
|
|
wb->bit_buffer[p] = bit << q;
|
|
} else {
|
|
wb->bit_buffer[p] &= ~(1 << q);
|
|
wb->bit_buffer[p] |= bit << q;
|
|
}
|
|
wb->bit_offset = off + 1;
|
|
}
|
|
|
|
static void vp9_wb_write_literal(struct vp9_write_bit_buffer *wb,
|
|
int data, int bits) {
|
|
int bit;
|
|
for (bit = bits - 1; bit >= 0; bit--)
|
|
vp9_wb_write_bit(wb, (data >> bit) & 1);
|
|
}
|
|
|
|
|
|
#endif // VP9_BIT_WRITE_BUFFER_H_
|