29 lines
740 B
C++
29 lines
740 B
C++
// Here are the callback functions that the decPNG library
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// will use to open files, fetch data and close the file.
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File pngfile;
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void * pngOpen(const char *filename, int32_t *size) {
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Serial.printf("Attempting to open %s\n", filename);
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pngfile = FileSys.open(filename, "r");
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*size = pngfile.size();
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return &pngfile;
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}
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void pngClose(void *handle) {
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File pngfile = *((File*)handle);
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if (pngfile) pngfile.close();
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}
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int32_t pngRead(PNGFILE *page, uint8_t *buffer, int32_t length) {
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if (!pngfile) return 0;
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page = page; // Avoid warning
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return pngfile.read(buffer, length);
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}
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int32_t pngSeek(PNGFILE *page, int32_t position) {
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if (!pngfile) return 0;
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page = page; // Avoid warning
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return pngfile.seek(position);
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}
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