24867bac8a
This returns a proper error code and allows us to print a proper error message which might not always be -ENOMEM. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
99 lines
1.7 KiB
C
99 lines
1.7 KiB
C
/*
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* Copyright (C) 2012 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
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*
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* GPL v2
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*/
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#include <common.h>
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#include <fb.h>
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#include <gui/image_renderer.h>
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#include <errno.h>
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#include <fs.h>
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#include <malloc.h>
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#include <libfile.h>
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static LIST_HEAD(image_renderers);
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static struct image_renderer *get_renderer(void* buf, size_t bufsize)
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{
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struct image_renderer *ir;
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enum filetype type = file_detect_type(buf, bufsize);
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list_for_each_entry(ir, &image_renderers, list) {
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if (ir->type == type)
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return ir;
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}
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eprintf("No renderer found for filetype %s\n", file_type_to_string(type));
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return NULL;
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}
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struct image *image_renderer_open(const char* file)
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{
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void *data;
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size_t size;
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struct image_renderer *ir;
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struct image *img;
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int ret;
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ret = read_file_2(file, &size, &data, FILESIZE_MAX);
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if (ret) {
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printf("unable to read %s: %s\n", file, strerror(-ret));
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return ERR_PTR(ret);
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}
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ir = get_renderer(data, size);
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if (!ir) {
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ret = -ENOENT;
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goto out;
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}
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img = ir->open(data, size);
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if (IS_ERR(img)) {
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ret = PTR_ERR(img);
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goto out;
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}
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img->ir = ir;
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if (!ir->keep_file_data)
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free(data);
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return img;
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out:
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free(data);
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return ERR_PTR(ret);
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}
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void image_renderer_close(struct image *img)
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{
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if (!img)
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return;
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img->ir->close(img);
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free(img);
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}
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int image_renderer_image(struct screen *sc, struct surface *s, struct image *img)
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{
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return img->ir->renderer(sc, s, img);
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}
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int image_renderer_register(struct image_renderer *ir)
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{
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if (!ir || !ir->type || !ir->renderer || !ir->open || !ir->close)
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return -EIO;
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list_add_tail(&ir->list, &image_renderers);
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return 0;
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}
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void image_renderer_unregister(struct image_renderer *ir)
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{
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if (!ir)
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return;
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list_del(&ir->list);
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}
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