mirror of
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97 lines
3.2 KiB
C
97 lines
3.2 KiB
C
/*****************************************************************************
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# #
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# uStreamer - Lightweight and fast MJPG-HTTP streamer. #
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# #
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# Copyright (C) 2018 Maxim Devaev <mdevaev@gmail.com> #
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# #
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# This program is free software: you can redistribute it and/or modify #
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# it under the terms of the GNU General Public License as published by #
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# the Free Software Foundation, either version 3 of the License, or #
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# (at your option) any later version. #
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# #
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# This program is distributed in the hope that it will be useful, #
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# but WITHOUT ANY WARRANTY; without even the implied warranty of #
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
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# GNU General Public License for more details. #
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# #
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# You should have received a copy of the GNU General Public License #
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# along with this program. If not, see <https://www.gnu.org/licenses/>. #
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# #
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*****************************************************************************/
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#include "picture.h"
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#include <stdlib.h>
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#include <stdbool.h>
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#include <string.h>
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#include <assert.h>
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#include "tools.h"
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#include "logging.h"
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struct picture_t *picture_init(void) {
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struct picture_t *picture;
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A_CALLOC(picture, 1);
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return picture;
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}
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void picture_destroy(struct picture_t *picture) {
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if (picture->data) {
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free(picture->data);
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}
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free(picture);
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}
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size_t picture_get_generous_size(unsigned width, unsigned height) {
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return ((width * height) << 1) * 2;
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}
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void picture_realloc_data(struct picture_t *picture, size_t size) {
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if (picture->allocated < size) {
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LOG_DEBUG("Increasing picture 0x%p buffer: %zu -> %zu (+%zu)",
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picture, picture->allocated, size, size - picture->allocated);
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A_REALLOC(picture->data, size);
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picture->allocated = size;
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}
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}
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void picture_set_data(struct picture_t *picture, const unsigned char *data, size_t size) {
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picture_realloc_data(picture, size);
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memcpy(picture->data, data, size);
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picture->used = size;
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}
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void picture_append_data(struct picture_t *picture, const unsigned char *data, size_t size) {
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size_t new_used = picture->used + size;
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picture_realloc_data(picture, new_used);
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memcpy(picture->data + picture->used, data, size);
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picture->used = new_used;
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}
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void picture_copy(const struct picture_t *src, struct picture_t *dest) {
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assert(src->allocated);
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picture_set_data(dest, src->data, src->allocated);
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# define COPY(_field) dest->_field = src->_field
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COPY(used);
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COPY(width);
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COPY(height);
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COPY(grab_ts);
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COPY(encode_begin_ts);
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COPY(encode_end_ts);
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# undef COPY
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}
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bool picture_compare(const struct picture_t *a, const struct picture_t *b) {
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return (a->used == b->used && !memcmp(a->data, b->data, b->used));
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}
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