block_t * AbstractStream::readNextBlock(size_t toread)
{
SegmentChunk *chunk = getChunk();
if(!chunk)
return NULL;
if(format != chunk->getStreamFormat())
{
/* Force stream to end for this call */
msg_Info(p_realdemux, "Changing stream format %u->%u",
(unsigned)format, (unsigned)chunk->getStreamFormat());
restarting_output = true;
format = chunk->getStreamFormat();
/* Next stream will use current unused chunk */
return NULL;
}
if(chunk->discontinuity)
{
discontinuity = true;
chunk->discontinuity = false;
msg_Info(p_realdemux, "Encountered discontinuity");
return NULL;
}
const bool b_segment_head_chunk = (chunk->getBytesRead() == 0);
block_t *block = chunk->read(toread);
if(block == NULL)
{
currentChunk = NULL;
delete chunk;
return NULL;
}
if (chunk->getBytesToRead() == 0)
{
currentChunk = NULL;
delete chunk;
}
block = checkBlock(block, b_segment_head_chunk);
return block;
}
size_t Stream::read(HTTPConnectionManager *connManager)
{
SegmentChunk *chunk = getChunk();
if(!chunk)
return 0;
if(!chunk->getConnection())
{
if(!connManager->connectChunk(chunk))
return 0;
}
size_t readsize = 0;
bool b_segment_head_chunk = false;
/* New chunk, do query */
if(chunk->getBytesRead() == 0)
{
if(chunk->getConnection()->query(chunk->getPath()) != VLC_SUCCESS)
{
chunk->getConnection()->releaseChunk();
currentChunk = NULL;
delete chunk;
return 0;
}
b_segment_head_chunk = true;
}
/* Because we don't know Chunk size at start, we need to get size
from content length */
readsize = chunk->getBytesToRead();
if (readsize > 32768)
readsize = 32768;
block_t *block = block_Alloc(readsize);
if(!block)
return 0;
mtime_t time = mdate();
ssize_t ret = chunk->getConnection()->read(block->p_buffer, readsize);
time = mdate() - time;
if(ret < 0)
{
block_Release(block);
chunk->getConnection()->releaseChunk();
currentChunk = NULL;
delete chunk;
return 0;
}
else
{
block->i_buffer = (size_t)ret;
adaptationLogic->updateDownloadRate(block->i_buffer, time);
chunk->onDownload(&block);
StreamFormat chunkStreamFormat = chunk->getStreamFormat();
if(output && chunkStreamFormat != output->getStreamFormat())
{
msg_Info(p_demux, "Changing stream format");
updateFormat(chunkStreamFormat);
}
if (chunk->getBytesToRead() == 0)
{
chunk->getConnection()->releaseChunk();
currentChunk = NULL;
delete chunk;
}
}
readsize = block->i_buffer;
if(output)
output->pushBlock(block, b_segment_head_chunk);
else
block_Release(block);
return readsize;
}
block_t * AbstractStream::readNextBlock(size_t)
{
SegmentChunk *chunk = getChunk();
if(!chunk)
return NULL;
if(format != chunk->getStreamFormat())
{
/* Force stream to end for this call */
msg_Info(p_realdemux, "Changing stream format %u->%u",
(unsigned)format, (unsigned)chunk->getStreamFormat());
restarting_output = true;
format = chunk->getStreamFormat();
/* Next stream will use current unused chunk */
return NULL;
}
if(chunk->discontinuity)
{
discontinuity = true;
chunk->discontinuity = false;
msg_Info(p_realdemux, "Encountered discontinuity");
return NULL;
}
if(!chunk->getConnection())
{
if(!connManager->connectChunk(chunk))
return NULL;
}
size_t readsize = 0;
bool b_segment_head_chunk = false;
/* New chunk, do query */
if(chunk->getBytesRead() == 0)
{
if(chunk->getConnection()->query(chunk->getPath()) != VLC_SUCCESS)
{
chunk->getConnection()->releaseChunk();
currentChunk = NULL;
delete chunk;
return NULL;
}
b_segment_head_chunk = true;
}
/* Because we don't know Chunk size at start, we need to get size
from content length */
readsize = chunk->getBytesToRead();
if (readsize > 32768)
readsize = 32768;
block_t *block = block_Alloc(readsize);
if(!block)
return NULL;
mtime_t time = mdate();
ssize_t ret = chunk->getConnection()->read(block->p_buffer, readsize);
time = mdate() - time;
if(ret < 0)
{
block_Release(block);
chunk->getConnection()->releaseChunk();
currentChunk = NULL;
delete chunk;
return NULL;
}
else
{
block->i_buffer = (size_t)ret;
adaptationLogic->updateDownloadRate(block->i_buffer, time);
chunk->onDownload(&block);
if (chunk->getBytesToRead() == 0)
{
chunk->getConnection()->releaseChunk();
currentChunk = NULL;
delete chunk;
}
}
block = checkBlock(block, b_segment_head_chunk);
return block;
}