our_bytestream.h
资源名称:NETVIDEO.rar [点击查看]
上传用户:sun1608
上传日期:2007-02-02
资源大小:6116k
文件大小:2k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /*
- * The contents of this file are subject to the Mozilla Public
- * License Version 1.1 (the "License"); you may not use this file
- * except in compliance with the License. You may obtain a copy of
- * the License at http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS
- * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
- * implied. See the License for the specific language governing
- * rights and limitations under the License.
- *
- * The Original Code is MPEG4IP.
- *
- * The Initial Developer of the Original Code is Cisco Systems Inc.
- * Portions created by Cisco Systems Inc. are
- * Copyright (C) Cisco Systems Inc. 2000, 2001. All Rights Reserved.
- *
- * Contributor(s):
- * Bill May wmay@cisco.com
- */
- /*
- * our_bytestream.h - base class for access to various "getbyte" facilities
- * such as rtp, file, quicktime file, memory.
- *
- * virtual routines here will allow any type of byte stream to be read
- * by the codecs.
- */
- #ifndef __OUR_BYTESTREAM_H__
- #define __OUR_BYTESTREAM_H__ 1
- #include <assert.h>
- #include "systems.h"
- class COurInByteStream
- {
- public:
- // name should be name for displays - not freed at close
- COurInByteStream(const char *name) {
- m_name = name;
- };
- virtual ~COurInByteStream() {};
- // eof - True if we're got end of file
- virtual int eof(void) = 0;
- // reset vector
- virtual void reset(void) = 0;
- // have no data - return TRUE if we don't have a frame ready
- virtual int have_no_data (void) {return 0; };
- /*
- * start_next_frame - return ts offset, pointer to buffer start, length
- * in buffer
- */
- virtual uint64_t start_next_frame (uint8_t **buffer, uint32_t *buflen,
- void **userdata) = 0;
- /*
- * used_bytes_for_frame - called after we process a frame with the number
- * of bytes used during decoding
- */
- virtual void used_bytes_for_frame(uint32_t bytes) = 0;
- /*
- * can_skip_frame - return 1 if bytestream can skip a frame
- */
- virtual int can_skip_frame (void) { return 0; };
- /*
- * skip_next_frame - actually do it...
- */
- virtual int skip_next_frame (uint64_t *ts, int *hasSyncFrame, uint8_t **buffer, uint32_t *buflen) { assert(0 == 1);return 0; };
- virtual double get_max_playtime (void) = 0;
- virtual void set_start_time (uint64_t start) { m_play_start_time = start; };
- protected:
- uint64_t m_play_start_time;
- const char *m_name;
- };
- #endif