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/*****************************************************************************
* attachment.c: Input reading an attachment.
*****************************************************************************
* Copyright (C) 2009 Laurent Aimar
* $Id: 941751189bbe50f51eb65c838aa514c163b8912f $
*
* Authors: Laurent Aimar <fenrir _AT_ videolan _DOT_ 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.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc_common.h>
#include <vlc_plugin.h>
#include <vlc_access.h>
#include <vlc_input.h>
/*****************************************************************************
* Module descriptor
*****************************************************************************/
static int Open (vlc_object_t *);
static void Close(vlc_object_t *);
vlc_module_begin()
set_shortname(N_("Attachment"))
set_description(N_("Attachment input"))
set_category(CAT_INPUT)
set_subcategory(SUBCAT_INPUT_ACCESS)
set_capability("access", 0)
add_shortcut("attachment")
set_callbacks(Open, Close)
vlc_module_end()
/*****************************************************************************
* Local prototypes
*****************************************************************************/
struct access_sys_t {
input_attachment_t *a;
};
static ssize_t Read(access_t *, uint8_t *, size_t);
static int Seek(access_t *, uint64_t);
static int Control(access_t *, int, va_list);
/* */
static int Open(vlc_object_t *object)
{
access_t *access = (access_t *)object;
access_sys_t *sys;
input_thread_t *input = access_GetParentInput(access);
if (!input)
return VLC_EGENERIC;
input_attachment_t *a;
if (input_Control(input, INPUT_GET_ATTACHMENT, &a, access->psz_location))
a = NULL;
vlc_object_release(input);
if (!a) {
msg_Err(access, "Failed to find the attachment '%s'",
access->psz_location);
return VLC_EGENERIC;
}
/* */
access->p_sys = sys = malloc(sizeof(*sys));
if (!sys) {
vlc_input_attachment_Delete(a);
return VLC_ENOMEM;
}
sys->a = a;
/* */
access_InitFields(access);
access->pf_read = Read;
access->pf_block = NULL;
access->pf_control = Control;
access->pf_seek = Seek;
return VLC_SUCCESS;
}
/* */
static void Close(vlc_object_t *object)
{
access_t *access = (access_t *)object;
access_sys_t *sys = access->p_sys;
vlc_input_attachment_Delete(sys->a);
free(sys);
}
/* */
static ssize_t Read(access_t *access, uint8_t *buffer, size_t size)
{
access_sys_t *sys = access->p_sys;
access->info.b_eof = access->info.i_pos >= (uint64_t)sys->a->i_data;
if (access->info.b_eof)
return 0;
const size_t copy = __MIN(size, sys->a->i_data - access->info.i_pos);
memcpy(buffer, (uint8_t*)sys->a->p_data + access->info.i_pos, copy);
access->info.i_pos += copy;
return copy;
}
/* */
static int Seek(access_t *access, uint64_t position)
{
access->info.i_pos = position;
access->info.b_eof = false;
return VLC_SUCCESS;
}
/* */
static int Control(access_t *access, int query, va_list args)
{
VLC_UNUSED(access);
switch (query)
{
/* */
case ACCESS_CAN_SEEK:
case ACCESS_CAN_FASTSEEK:
case ACCESS_CAN_PAUSE:
case ACCESS_CAN_CONTROL_PACE: {
bool *b = va_arg(args, bool*);
*b = true;
return VLC_SUCCESS;
}
case ACCESS_GET_PTS_DELAY: {
int64_t *d = va_arg(args, int64_t *);
*d = DEFAULT_PTS_DELAY;
return VLC_SUCCESS;
}
case ACCESS_SET_PAUSE_STATE:
return VLC_SUCCESS;
default:
return VLC_EGENERIC;
}
}
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