diff options
Diffstat (limited to '')
-rw-r--r-- | third_party/aom/aom_dsp/bitwriter.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/third_party/aom/aom_dsp/bitwriter.c b/third_party/aom/aom_dsp/bitwriter.c new file mode 100644 index 0000000000..4c27bb1fc3 --- /dev/null +++ b/third_party/aom/aom_dsp/bitwriter.c @@ -0,0 +1,40 @@ +/* + * 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 <string.h> +#include "aom_dsp/bitwriter.h" + +void aom_start_encode(aom_writer *w, uint8_t *source) { + w->buffer = source; + w->pos = 0; + od_ec_enc_init(&w->ec, 62025); +} + +int aom_stop_encode(aom_writer *w) { + int nb_bits; + uint32_t bytes; + unsigned char *data; + data = od_ec_enc_done(&w->ec, &bytes); + if (!data) { + od_ec_enc_clear(&w->ec); + return -1; + } + nb_bits = od_ec_enc_tell(&w->ec); + memcpy(w->buffer, data, bytes); + w->pos = bytes; + od_ec_enc_clear(&w->ec); + return nb_bits; +} + +int aom_tell_size(aom_writer *w) { + const int nb_bits = od_ec_enc_tell(&w->ec); + return nb_bits; +} |