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113 lines
3.9 KiB
C
113 lines
3.9 KiB
C
/*****************************************************************************
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# #
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# uStreamer - Lightweight and fast MJPEG-HTTP streamer. #
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# #
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# Copyright (C) 2018-2024 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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#pragma once
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#include "types.h"
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#include "tools.h"
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#define US_FRAME_META_DECLARE \
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uint width; \
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uint height; \
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uint format; \
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uint stride; \
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/* Stride is a bytesperline in V4L2 */ \
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/* https://www.kernel.org/doc/html/v4.14/media/uapi/v4l/pixfmt-v4l2.html */ \
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/* https://medium.com/@oleg.shipitko/what-does-stride-mean-in-image-processing-bba158a72bcd */ \
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bool online; \
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bool key; \
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uint gop; \
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\
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ldf grab_ts; \
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ldf encode_begin_ts; \
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ldf encode_end_ts;
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typedef struct {
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u8 *data;
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uz used;
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uz allocated;
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int dma_fd;
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US_FRAME_META_DECLARE;
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} us_frame_s;
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#define US_FRAME_COPY_META(x_src, x_dest) { \
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(x_dest)->width = (x_src)->width; \
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(x_dest)->height = (x_src)->height; \
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(x_dest)->format = (x_src)->format; \
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(x_dest)->stride = (x_src)->stride; \
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(x_dest)->online = (x_src)->online; \
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(x_dest)->key = (x_src)->key; \
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(x_dest)->gop = (x_src)->gop; \
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\
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(x_dest)->grab_ts = (x_src)->grab_ts; \
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(x_dest)->encode_begin_ts = (x_src)->encode_begin_ts; \
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(x_dest)->encode_end_ts = (x_src)->encode_end_ts; \
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}
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#define US_FRAME_COMPARE_GEOMETRY(x_a, x_b) ( \
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/* Compare the used size and significant meta (no timings) */ \
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(x_a)->used == (x_b)->used \
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\
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&& (x_a)->width == (x_b)->width \
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&& (x_a)->height == (x_b)->height \
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&& (x_a)->format == (x_b)->format \
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&& (x_a)->stride == (x_b)->stride \
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&& (x_a)->online == (x_b)->online \
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&& (x_a)->key == (x_b)->key \
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&& (x_a)->gop == (x_b)->gop \
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)
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static inline void us_frame_encoding_begin(const us_frame_s *src, us_frame_s *dest, uint format) {
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assert(src->used > 0);
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US_FRAME_COPY_META(src, dest);
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dest->encode_begin_ts = us_get_now_monotonic();
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dest->format = format;
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dest->stride = 0;
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dest->used = 0;
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}
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static inline void us_frame_encoding_end(us_frame_s *dest) {
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assert(dest->used > 0);
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dest->encode_end_ts = us_get_now_monotonic();
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}
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us_frame_s *us_frame_init(void);
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void us_frame_destroy(us_frame_s *frame);
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void us_frame_realloc_data(us_frame_s *frame, uz size);
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void us_frame_set_data(us_frame_s *frame, const u8 *data, uz size);
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void us_frame_append_data(us_frame_s *frame, const u8 *data, uz size);
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void us_frame_copy(const us_frame_s *src, us_frame_s *dest);
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bool us_frame_compare(const us_frame_s *a, const us_frame_s *b);
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uint us_frame_get_padding(const us_frame_s *frame);
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bool us_is_jpeg(uint format);
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const char *us_fourcc_to_string(uint format, char *buf, uz size);
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