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0ceaff2b65
This adds ability to view gif images in rockbox. Works both on color and gray/monochrome targets (greylib). Aspect correction is supported as well. Limitations: - animated gifs are restricted to 32 frames - animated gifs loop always (loopcount is ignored) - plain text extension is not supported - animated gifs with interframe delay = 0 are treated as still images (web browsers usually treat delay 0 as 100ms to prevent exhaustive CPU load by such images) Change-Id: I61501f801ddcd403410e38d83e6bddc9883e7ede
37 lines
1.3 KiB
C
37 lines
1.3 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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*
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* Copyright (c) 2012 Marcin Bukat
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#define GIF_MAX_FRAMES 32
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struct gif_decoder {
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unsigned char *mem;
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size_t mem_size;
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int width;
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int height;
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int frames_count;
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int delay;
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size_t native_img_size;
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int error;
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};
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void gif_decoder_init(struct gif_decoder *decoder, void *mem, size_t size);
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void gif_open(char *filename, struct gif_decoder *d);
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void gif_decode(struct gif_decoder *d, void (*pf_progress)(int current, int total));
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