132 lines
3.7 KiB
C
132 lines
3.7 KiB
C
/*
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* Copyright (C) 2016 Glyptodon, Inc.
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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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#include "config.h"
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#include "image-stream.h"
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#include "jpeg.h"
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#include "log.h"
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#include "png.h"
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#ifdef ENABLE_WEBP
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#include "webp.h"
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#endif
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#include <stdlib.h>
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#include <string.h>
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guacenc_decoder_mapping guacenc_decoder_map[] = {
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{"image/png", &guacenc_png_decoder},
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{"image/jpeg", &guacenc_jpeg_decoder},
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#ifdef ENABLE_WEBP
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{"image/webp", &guacenc_webp_decoder},
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#endif
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{NULL, NULL}
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};
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guacenc_decoder* guacenc_get_decoder(const char* mimetype) {
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/* Search through mapping for the decoder having given mimetype */
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guacenc_decoder_mapping* current = guacenc_decoder_map;
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while (current->mimetype != NULL) {
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/* Return decoder if mimetype matches */
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if (strcmp(current->mimetype, mimetype) == 0)
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return current->decoder;
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/* Next candidate decoder */
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current++;
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}
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/* No such decoder */
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guacenc_log(GUAC_LOG_WARNING, "Support for \"%s\" not present", mimetype);
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return NULL;
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}
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guacenc_image_stream* guacenc_image_stream_alloc(int mask, int index,
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const char* mimetype, int x, int y) {
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/* Allocate stream */
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guacenc_image_stream* stream = malloc(sizeof(guacenc_image_stream));
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if (stream == NULL)
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return NULL;
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/* Init properties */
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stream->index = index;
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stream->mask = mask;
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stream->x = x;
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stream->y = y;
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/* Associate with corresponding decoder */
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guacenc_decoder* decoder = stream->decoder = guacenc_get_decoder(mimetype);
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if (decoder != NULL)
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decoder->init_handler(stream);
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return stream;
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}
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int guacenc_image_stream_receive(guacenc_image_stream* stream,
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unsigned char* data, int length) {
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/* Invoke data handler of corresponding decoder (if any) */
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guacenc_decoder* decoder = stream->decoder;
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if (decoder != NULL)
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return decoder->data_handler(stream, data, length);
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/* If there is no decoder, simply return success */
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return 0;
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}
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int guacenc_image_stream_end(guacenc_image_stream* stream,
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guacenc_buffer* buffer) {
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/* Invoke end handler of corresponding decoder (if any) */
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guacenc_decoder* decoder = stream->decoder;
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if (decoder != NULL)
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return decoder->end_handler(stream, buffer);
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/* If there is no decoder, simply return success */
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return 0;
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}
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int guacenc_image_stream_free(guacenc_image_stream* stream) {
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/* Ignore NULL streams */
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if (stream == NULL)
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return 0;
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/* Invoke free handler for decoder (if associated) */
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guacenc_decoder* decoder = stream->decoder;
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if (decoder != NULL)
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decoder->free_handler(stream);
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/* Free actual stream */
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free(stream);
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return 0;
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}
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