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      1 /* ------------------------------------------------------------------
      2  * Copyright (C) 1998-2009 PacketVideo
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
     13  * express or implied.
     14  * See the License for the specific language governing permissions
     15  * and limitations under the License.
     16  * -------------------------------------------------------------------
     17  */
     18 // -*- c++ -*-
     19 #ifndef MEDIA_PACKET_H
     20 #define MEDIA_PACKET_H
     21 
     22 #include "oscl_media_data.h"
     23 #include "oscl_media_status.h"
     24 #include "oscl_time.h"
     25 
     26 #include "media_fragment.h"
     27 #include "packet.h"
     28 #ifndef PVMF_MEDIA_DATA_H_INCLUDED
     29 #include "pvmf_media_data.h"
     30 #endif
     31 #ifndef PVMF_SIMPLE_MEDIA_BUFFER_H_INCLUDED
     32 #include "pvmf_simple_media_buffer.h"
     33 #endif
     34 // Constants controlling the size of the RTP packet container
     35 
     36 class MediaPacket : public Packet
     37 {
     38     public:
     39         virtual ~MediaPacket() {};
     40 
     41         OSCL_IMPORT_REF BufFragStatusClass::status_t AddMediaFragment(MediaFragment* fragment, int32 location_offset = APPEND_MEDIA_AT_END);
     42 
     43         OSCL_IMPORT_REF MediaFragment* GetMediaFragment(int32 idx, MediaFragment& fragment);
     44 
     45         OSCL_IMPORT_REF void Reset();
     46         OSCL_IMPORT_REF void SetTimeval(TimeValue& val)
     47         {
     48             time_val = val;
     49         }
     50         OSCL_IMPORT_REF TimeValue* GetTimeval()
     51         {
     52             return &time_val;
     53         }
     54 
     55         uint8* cur_pos;
     56         uint8* end_pos;
     57         int cur_frag_num;
     58 
     59     protected:
     60         MediaPacket() : cur_pos(NULL), end_pos(NULL), cur_frag_num(0)/*, next(NULL)*/ {};
     61     private:
     62 //  MediaPacket *next;
     63         TimeValue time_val;
     64         friend class MediaPacketAllocator;
     65         friend class MediaPacketPoolAllocator;
     66 };
     67 
     68 class MediaPacketAllocator
     69 {
     70     public:
     71         MediaPacketAllocator() {};
     72 
     73         virtual ~MediaPacketAllocator()
     74         {
     75             //printf("here\n");
     76         }
     77         /* This should change to allocate memory from a memory pool */
     78         OSCL_IMPORT_REF virtual MediaPacket* allocate_packet(EPacketType type = EPacketDefault);
     79         /* Change to return to pool */
     80         OSCL_IMPORT_REF virtual void deallocate_packet(MediaPacket* pack);
     81 };
     82 
     83 class MediaPacketPoolAllocator : public MediaPacketAllocator
     84 {
     85     public:
     86         OSCL_IMPORT_REF MediaPacketPoolAllocator(int packets);
     87         virtual ~MediaPacketPoolAllocator();
     88 
     89         OSCL_IMPORT_REF MediaPacket *allocate_packet(EPacketType type = EPacketDefault);
     90 
     91         OSCL_IMPORT_REF void deallocate_packet(MediaPacket *pack);
     92 
     93     private:
     94         int num_packets;
     95         MediaPacket *free_list;
     96         MediaPacket *entire_list;
     97 };
     98 
     99 OSCL_IMPORT_REF PVMFSharedMediaMsgPtr MediaPacketToPVMFMediaMsg(MediaPacket* packet, PVMFSimpleMediaBufferCombinedAlloc& alloc);
    100 OSCL_IMPORT_REF MediaPacket* PVMFMediaMsgToMediaPacket(PVMFSharedMediaMsgPtr aMsg,
    101         MediaPacketAllocator& aMediaPacketAlloc, FragmentAllocator& aFragmentAlloc);
    102 #endif
    103