decode_marker.h (1201B)
1 // Copyright (c) the JPEG XL Project Authors. All rights reserved. 2 // 3 // Use of this source code is governed by a BSD-style 4 // license that can be found in the LICENSE file. 5 6 #ifndef LIB_JPEGLI_DECODE_MARKER_H_ 7 #define LIB_JPEGLI_DECODE_MARKER_H_ 8 9 #include <stdint.h> 10 11 #include "lib/jpegli/common.h" 12 13 namespace jpegli { 14 15 // Reads the available input in the source manager's input buffer until either 16 // the end of the next SOS marker or the end of the input. 17 // The corresponding fields of cinfo are updated with the processed input data. 18 // Upon return, the input buffer will be at the start or at the end of a marker 19 // data segment (inter-marker data is allowed). 20 // Return value is one of: 21 // * JPEG_SUSPENDED, if the current input buffer ends before the next SOS or 22 // EOI marker. Input buffer refill is handled by the caller; 23 // * JPEG_REACHED_SOS, if the next SOS marker is found; 24 // * JPEG_REACHED_EOR, if the end of the input is found. 25 int ProcessMarkers(j_decompress_ptr cinfo, const uint8_t* data, size_t len, 26 size_t* pos); 27 28 jpeg_marker_parser_method GetMarkerProcessor(j_decompress_ptr cinfo); 29 30 } // namespace jpegli 31 32 #endif // LIB_JPEGLI_DECODE_MARKER_H_