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97 lines
2.5 KiB
C
97 lines
2.5 KiB
C
/*
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* Copyright (c) 2023 Lain Bailey <lain@obsproject.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "darray.h"
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#include "array-serializer.h"
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static size_t array_output_write(void *param, const void *data, size_t size)
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{
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struct array_output_data *output = param;
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if (output->cur_pos < output->bytes.num) {
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size_t new_size = output->cur_pos + size;
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if (new_size > output->bytes.num) {
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darray_ensure_capacity(sizeof(uint8_t),
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&output->bytes.da, new_size);
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output->bytes.num = new_size;
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}
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memcpy(output->bytes.array + output->cur_pos, data, size);
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output->cur_pos += size;
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} else {
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da_push_back_array(output->bytes, (uint8_t *)data, size);
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output->cur_pos += size;
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}
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return size;
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}
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static int64_t array_output_get_pos(void *param)
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{
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struct array_output_data *data = param;
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return (int64_t)data->bytes.num;
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}
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static int64_t array_output_seek(void *param, int64_t offset,
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enum serialize_seek_type seek_type)
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{
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struct array_output_data *output = param;
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size_t new_pos = 0;
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switch (seek_type) {
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case SERIALIZE_SEEK_START:
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new_pos = offset;
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break;
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case SERIALIZE_SEEK_CURRENT:
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new_pos = output->cur_pos + offset;
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break;
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case SERIALIZE_SEEK_END:
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new_pos = output->bytes.num - offset;
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break;
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}
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if (new_pos > output->bytes.num)
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return -1;
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output->cur_pos = new_pos;
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return (int64_t)new_pos;
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}
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void array_output_serializer_init(struct serializer *s,
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struct array_output_data *data)
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{
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memset(s, 0, sizeof(struct serializer));
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memset(data, 0, sizeof(struct array_output_data));
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s->data = data;
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s->write = array_output_write;
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s->get_pos = array_output_get_pos;
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s->seek = array_output_seek;
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}
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void array_output_serializer_free(struct array_output_data *data)
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{
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da_free(data->bytes);
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}
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void array_output_serializer_reset(struct array_output_data *data)
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{
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da_clear(data->bytes);
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data->cur_pos = 0;
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}
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