7d6ac96001
* Increase colorspace conversion efficiency. This not only avoids a function call, it avoids the time-consuming switch statement in conver_pixel (replacing it with a single conditional on the byteswap flag + accounting for BGR/RGB during palette creation) * Buffer all the bytes of a single frame together. By reducing low level write calls we get a decent speed increase even though it increases data-shuffling a bit. Together with some other changes that enable "double buffered" camera capture, this gets me to 8.8fps capturing QVGA (320x240) gifs and 11fps capturing 240x240 square gifs.
45 lines
1.6 KiB
C
45 lines
1.6 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2021 Jeff Epler for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#pragma once
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#include "py/obj.h"
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#include "py/stream.h"
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#include "shared-bindings/displayio/__init__.h"
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typedef struct gifio_gifwriter {
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mp_obj_base_t base;
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mp_obj_t *file;
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const mp_stream_p_t *file_proto;
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displayio_colorspace_t colorspace;
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int width, height;
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int error;
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uint8_t *data;
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size_t cur, size;
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bool own_file;
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bool byteswap;
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} gifio_gifwriter_t;
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