Staging
v0.5.1
v0.5.1
Revision f1b94134a4b879bc55c3dacdb496690c8ebdc03f authored by Vikram Fugro on 11 March 2016, 12:16:11 UTC, committed by Jean-Baptiste Kempf on 11 March 2016, 14:57:34 UTC
Allocate the output vlc pictures with dimensions padded, as requested by the decoder (for alignments). This further increases the chances of direct rendering. Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>
1 parent 6c813cb
stream_memory.c
/*****************************************************************************
* stream_memory.c: stream_t wrapper around memory buffer
*****************************************************************************
* Copyright (C) 1999-2008 VLC authors and VideoLAN
* $Id$
*
* Authors: Sigmund Augdal Helberg <dnumgis@videolan.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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.
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "stream.h"
struct stream_sys_t
{
bool i_preserve_memory;
size_t i_pos; /* Current reading offset */
size_t i_size;
uint8_t *p_buffer;
};
static ssize_t Read( stream_t *, void *p_read, size_t i_read );
static int Seek( stream_t *, uint64_t );
static int Control( stream_t *, int i_query, va_list );
static void Delete ( stream_t * );
#undef stream_MemoryNew
/**
* Create a stream from a memory buffer
*
* \param p_this the calling vlc_object
* \param p_buffer the memory buffer for the stream
* \param i_buffer the size of the buffer
* \param i_preserve_memory if this is set to false the memory buffer
* pointed to by p_buffer is freed on stream_Destroy
*/
stream_t *stream_MemoryNew( vlc_object_t *p_this, uint8_t *p_buffer,
uint64_t i_size, bool i_preserve_memory )
{
stream_t *s = stream_CommonNew( p_this, Delete );
stream_sys_t *p_sys;
if( !s )
return NULL;
s->p_sys = p_sys = malloc( sizeof( stream_sys_t ) );
if( !s->p_sys )
{
stream_CommonDelete( s );
return NULL;
}
p_sys->i_pos = 0;
p_sys->i_size = i_size;
p_sys->p_buffer = p_buffer;
p_sys->i_preserve_memory = i_preserve_memory;
s->pf_read = Read;
s->pf_seek = Seek;
s->pf_control = Control;
s->p_input = NULL;
return s;
}
static void Delete( stream_t *s )
{
if( !s->p_sys->i_preserve_memory ) free( s->p_sys->p_buffer );
free( s->p_sys );
}
/****************************************************************************
* AStreamControl:
****************************************************************************/
static int Control( stream_t *s, int i_query, va_list args )
{
stream_sys_t *p_sys = s->p_sys;
uint64_t *pi_64;
switch( i_query )
{
case STREAM_GET_SIZE:
pi_64 = va_arg( args, uint64_t * );
*pi_64 = p_sys->i_size;
break;
case STREAM_CAN_SEEK:
case STREAM_CAN_FASTSEEK:
case STREAM_CAN_PAUSE:
case STREAM_CAN_CONTROL_PACE:
*va_arg( args, bool * ) = true;
break;
case STREAM_GET_PTS_DELAY:
*va_arg( args, int64_t * ) = 0;
break;
case STREAM_GET_TITLE_INFO:
case STREAM_GET_TITLE:
case STREAM_GET_SEEKPOINT:
case STREAM_GET_META:
case STREAM_GET_CONTENT_TYPE:
case STREAM_GET_SIGNAL:
case STREAM_SET_TITLE:
case STREAM_SET_SEEKPOINT:
return VLC_EGENERIC;
case STREAM_SET_PAUSE_STATE:
break; /* nothing to do */
case STREAM_SET_PRIVATE_ID_STATE:
case STREAM_SET_PRIVATE_ID_CA:
case STREAM_GET_PRIVATE_ID_STATE:
msg_Err( s, "Hey, what are you thinking? "
"DO NOT USE PRIVATE STREAM CONTROLS!!!" );
return VLC_EGENERIC;
default:
msg_Err( s, "invalid stream_vaControl query=0x%x", i_query );
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
static ssize_t Read( stream_t *s, void *p_read, size_t i_read )
{
stream_sys_t *p_sys = s->p_sys;
if( i_read > p_sys->i_size - p_sys->i_pos )
i_read = p_sys->i_size - p_sys->i_pos;
if ( p_read )
memcpy( p_read, p_sys->p_buffer + p_sys->i_pos, i_read );
p_sys->i_pos += i_read;
return i_read;
}
static int Seek( stream_t *s, uint64_t offset )
{
stream_sys_t *p_sys = s->p_sys;
if( offset > p_sys->i_size )
offset = p_sys->i_size;
p_sys->i_pos = offset;
return VLC_SUCCESS;
}
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