ref: 92f5c72a55ebfe39d93edcf20dcee69f767cb73d
dir: /midiproc/buffer.h/
// // Copyright(C) 2017 Alex Mayfield // // This program is free software; you can redistribute it and/or // modify it under the terms of the GNU General Public License // as published by the Free Software Foundation; either version 2 // of the License, or (at your option) any later version. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // DESCRIPTION: // A simple buffer and reader implementation. // #ifndef __BUFFER__ #define __BUFFER__ #include "../src/doomtype.h" #define BUFFER_SIZE 1024 typedef struct { byte buffer[BUFFER_SIZE]; // Buffer. byte *buffer_end; // End of Buffer. byte *data; // Start of actual data. byte *data_end; // End of actual data. int data_len; // Length of actual data. } buffer_t; typedef struct { buffer_t *buffer; byte *pos; } buffer_reader_t; buffer_t *NewBuffer(); void DeleteBuffer(buffer_t* buf); int Buffer_Data(buffer_t *buf, byte **data); boolean Buffer_Push(buffer_t *buf, const void *data, int len); void Buffer_Shift(buffer_t *buf, int len); void Buffer_Clear(buffer_t *buf); buffer_reader_t *NewReader(buffer_t* buffer); void DeleteReader(buffer_reader_t *reader); int Reader_BytesRead(buffer_reader_t *reader); boolean Reader_ReadInt8(buffer_reader_t *reader, uint8_t *out); boolean Reader_ReadInt16(buffer_reader_t *reader, uint16_t *out); boolean Reader_ReadInt32(buffer_reader_t *reader, uint32_t *out); char *Reader_ReadString(buffer_reader_t *reader); #endif