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/*
* Copyright (C) 2010-2012 Hendrik Leppkes
* http://www.1f0.de
*
* 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.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdafx.h>
#include "Packet.h"
Packet::Packet()
: pmt(NULL)
, bDiscontinuity(FALSE)
, bSyncPoint(FALSE)
, rtStart(INVALID_TIME)
, rtStop(INVALID_TIME)
, bPosition(-1)
, dwFlags(0)
, m_DataSize(0)
, m_Data(NULL)
, m_Buf(NULL)
{
}
Packet::~Packet()
{
DeleteMediaType(pmt);
av_buffer_unref(&m_Buf);
}
int Packet::SetDataSize(int len)
{
if (len < 0)
return -1;
// RemoveHead may have moved m_Data, make sure the data moved too.
if (m_Buf && m_Buf->data != m_Data)
memmove(m_Buf->data, m_Data, m_DataSize);
// Re-allocate the buffer, if required
if (!m_Buf || m_Buf->size < (len + FF_INPUT_BUFFER_PADDING_SIZE)) {
int ret = av_buffer_realloc(&m_Buf, len + FF_INPUT_BUFFER_PADDING_SIZE);
if (ret < 0)
return ret;
}
m_Data = m_Buf->data;
m_DataSize = len;
return 0;
}
int Packet::SetData(const void* ptr, int len)
{
if (!ptr || len < 0)
return -1;
int ret = SetDataSize(len);
if (ret < 0)
return ret;
memcpy(m_Data, ptr, len);
return 0;
}
int Packet::SetPacket(AVPacket *pkt)
{
if (pkt->buf) {
ASSERT(!m_Buf);
m_Buf = av_buffer_ref(pkt->buf);
if (!m_Buf)
return -1;
m_Data = m_Buf->data;
m_DataSize = pkt->size;
return 0;
} else {
return SetData(pkt->data, pkt->size);
}
}
int Packet::Append(Packet *ptr)
{
return AppendData(ptr->GetData(), ptr->GetDataSize());
}
int Packet::AppendData(const void* ptr, int len)
{
int prevSize = m_DataSize;
int ret = SetDataSize(m_DataSize + len);
if (ret < 0)
return ret;
memcpy(m_Data+prevSize, ptr, len);
return 0;
}
int Packet::RemoveHead(int count)
{
count = min(count, m_DataSize);
if (!m_Data || count < 0)
return -1;
m_Data += count;
m_DataSize -= count;
return 0;
}
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