videolan
/
vlc
mirror of https://code.videolan.org/videolan/vlc
1
Fork 0
Code Releases Activity
vlc/src/input/demux.c

834 lines
28 KiB
C
Raw Blame History

/*****************************************************************************
* demux.c
*****************************************************************************
* Copyright (C) 1999-2004 VLC authors and VideoLAN
*
* Author: Laurent Aimar <fenrir@via.ecp.fr>
*
* 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 <assert.h>
#include <limits.h>
#include "demux.h"
#include <libvlc.h>
#include <vlc_codec.h>
#include <vlc_meta.h>
#include <vlc_url.h>
#include <vlc_modules.h>
#include <vlc_strings.h>
#include "input_internal.h"
typedef const struct
{
char const key[20];
char const name[8];
} demux_mapping;
static int demux_mapping_cmp( const void *k, const void *v )
{
demux_mapping* entry = v;
return vlc_ascii_strcasecmp( k, entry->key );
}
static const char *demux_NameFromMimeType(const char *mime)
{
static demux_mapping types[] =
{ /* Must be sorted in ascending ASCII order */
{ "audio/aac", "m4a" },
{ "audio/aacp", "m4a" },
{ "audio/mpeg", "mp3" },
//{ "video/MP1S", "es,mpgv" }, !b_force
{ "video/dv", "rawdv" },
{ "video/MP2P", "ps" },
{ "video/MP2T", "ts" },
{ "video/nsa", "nsv" },
{ "video/nsv", "nsv" },
};
demux_mapping *type = bsearch(mime, types, ARRAY_SIZE(types),
sizeof (*types), demux_mapping_cmp);
return (type != NULL) ? type->name : "any";
}
demux_t *demux_New( vlc_object_t *p_obj, const char *module, const char *url,
stream_t *s, es_out_t *out )
{
assert(s != NULL );
return demux_NewAdvanced( p_obj, NULL, module, url, s, out, false );
}
struct vlc_demux_private
{
module_t *module;
};
static void demux_DestroyDemux(demux_t *demux)
{
struct vlc_demux_private *priv = vlc_stream_Private(demux);
module_unneed(demux, priv->module);
free(demux->psz_filepath);
free(demux->psz_name);
assert(demux->s != NULL);
vlc_stream_Delete(demux->s);
}
static int demux_Probe(void *func, bool forced, va_list ap)
{
int (*probe)(vlc_object_t *) = func;
demux_t *demux = va_arg(ap, demux_t *);
/* Restore input stream offset (in case previous probed demux failed to
* to do so). */
if (vlc_stream_Tell(demux->s) != 0 && vlc_stream_Seek(demux->s, 0))
{
msg_Err(demux, "seek failure before probing");
return VLC_EGENERIC;
}
demux->obj.force = forced;
int ret = probe(VLC_OBJECT(demux));
if (ret)
vlc_objres_clear(VLC_OBJECT(demux));
return ret;
}
demux_t *demux_NewAdvanced( vlc_object_t *p_obj, input_thread_t *p_input,
const char *module, const char *url,
stream_t *s, es_out_t *out, bool b_preparsing )
{
const char *p = strchr(url, ':');
if (p == NULL) {
errno = EINVAL;
return NULL;
}
struct vlc_demux_private *priv;
demux_t *p_demux = vlc_stream_CustomNew(p_obj, demux_DestroyDemux,
sizeof (*priv), "demux");
if (unlikely(p_demux == NULL))
return NULL;
assert(s != NULL);
priv = vlc_stream_Private(p_demux);
p_demux->p_input_item = p_input ? input_GetItem(p_input) : NULL;
p_demux->psz_name = strdup(module);
if (unlikely(p_demux->psz_name == NULL))
goto error;
p_demux->psz_url = strdup(url);
if (unlikely(p_demux->psz_url == NULL))
goto error;
p_demux->psz_location = p_demux->psz_url + 1 + (p - url);
if (strncmp(p_demux->psz_location, "//", 2) == 0)
p_demux->psz_location += 2;
p_demux->psz_filepath = vlc_uri2path(url); /* parse URL */
if( !b_preparsing )
msg_Dbg( p_obj, "creating demux \"%s\", URL: %s, path: %s",
module, url, p_demux->psz_filepath );
p_demux->s = s;
p_demux->out = out;
p_demux->b_preparsing = b_preparsing;
p_demux->pf_readdir = NULL;
p_demux->pf_demux = NULL;
p_demux->pf_control = NULL;
p_demux->p_sys = NULL;
p_demux->ops = NULL;
char *modbuf = NULL;
bool strict = true;
if (!strcasecmp(module, "any" ) || module[0] == '\0') {
/* Look up demux by content type for hard to detect formats */
char *type = stream_MimeType(s);
if (type != NULL) {
module = demux_NameFromMimeType(type);
free(type);
}
strict = false;
}
if (strcasecmp(module, "any") == 0 && p_demux->psz_filepath != NULL)
{
const char *ext = strrchr(p_demux->psz_filepath, '.');
if (ext != NULL) {
if (b_preparsing && !vlc_ascii_strcasecmp(ext, ".mp3"))
module = "mpga";
else
if (likely(asprintf(&modbuf, "ext-%s", ext + 1) >= 0))
module = modbuf;
else
goto error;
}
strict = false;
}
priv->module = vlc_module_load(p_demux, "demux", module, strict,
demux_Probe, p_demux);
free(modbuf);
if (priv->module == NULL)
goto error;
return p_demux;
error:
free( p_demux->psz_filepath );
free( p_demux->psz_name );
stream_CommonDelete( p_demux );
return NULL;
}
static int demux_ReadDir( stream_t *s, input_item_node_t *p_node )
{
assert(s->pf_readdir != NULL || (s->ops != NULL && s->ops->demux.readdir != NULL));
return (s->ops != NULL ? s->ops->demux.readdir : s->pf_readdir)( s, p_node );
}
int demux_Demux(demux_t *demux)
{
if (demux->pf_demux != NULL || (demux->ops != NULL && demux->ops->demux.demux != NULL))
return (demux->ops != NULL ? demux->ops->demux.demux : demux->pf_demux)(demux);
if ((demux->pf_readdir != NULL || (demux->ops != NULL && demux->ops->demux.readdir != NULL)) && demux->p_input_item != NULL) {
input_item_node_t *node = input_item_node_Create(demux->p_input_item);
if (unlikely(node == NULL))
return VLC_DEMUXER_EGENERIC;
if (demux_ReadDir(demux, node)) {
input_item_node_Delete(node);
return VLC_DEMUXER_EGENERIC;
}
if (es_out_Control(demux->out, ES_OUT_POST_SUBNODE, node))
input_item_node_Delete(node);
return VLC_DEMUXER_EOF;
}
return VLC_DEMUXER_SUCCESS;
}
#define static_control_match(foo) \
static_assert((unsigned) DEMUX_##foo == STREAM_##foo, "Mismatch")
int demux_vaControl( demux_t *demux, int query, va_list args )
{
if (demux->ops == NULL)
return demux->pf_control( demux, query, args );
switch (query) {
case DEMUX_CAN_SEEK:
{
bool *can_seek = va_arg(args, bool *);
if (demux->ops->can_seek != NULL) {
*can_seek = demux->ops->can_seek(demux);
} else {
*can_seek = false;
}
return VLC_SUCCESS;
}
case DEMUX_CAN_PAUSE:
{
bool *can_pause = va_arg(args, bool *);
if (demux->ops->can_pause != NULL) {
*can_pause = demux->ops->can_pause(demux);
} else {
*can_pause = false;
}
return VLC_SUCCESS;
}
case DEMUX_CAN_RECORD:
{
bool *can_record = va_arg(args, bool *);
if (demux->ops->demux.can_record != NULL) {
*can_record = demux->ops->demux.can_record(demux);
} else {
*can_record = false;
}
return VLC_SUCCESS;
}
case DEMUX_CAN_CONTROL_PACE:
{
bool *can_control_pace = va_arg(args, bool *);
if (demux->ops->can_control_pace != NULL) {
*can_control_pace = demux->ops->can_control_pace(demux);
} else {
*can_control_pace = false;
}
return VLC_SUCCESS;
}
case DEMUX_CAN_CONTROL_RATE:
{
bool *can_control_rate = va_arg(args, bool *);
if (demux->ops->demux.can_control_rate != NULL) {
*can_control_rate = demux->ops->demux.can_control_rate(demux);
} else {
*can_control_rate = false;
}
return VLC_SUCCESS;
}
case DEMUX_HAS_UNSUPPORTED_META:
{
bool *has_unsupported_meta = va_arg(args, bool *);
if (demux->ops->demux.has_unsupported_meta != NULL) {
*has_unsupported_meta = demux->ops->demux.has_unsupported_meta(demux);
} else {
*has_unsupported_meta = false;
}
return VLC_SUCCESS;
}
case DEMUX_GET_PTS_DELAY:
if (demux->ops->get_pts_delay != NULL) {
vlc_tick_t *pts_delay = va_arg(args, vlc_tick_t *);
return demux->ops->get_pts_delay(demux, pts_delay);
}
return VLC_EGENERIC;
case DEMUX_GET_TITLE_INFO:
if (demux->ops->demux.get_title_info != NULL) {
input_title_t ***title_info = va_arg(args, input_title_t ***);
int *size = va_arg(args, int *);
int *pi_title_offset = va_arg(args, int *);
int *pi_seekpoint_offset = va_arg(args, int *);
return demux->ops->demux.get_title_info(demux, title_info, size, pi_title_offset, pi_seekpoint_offset);
}
return VLC_EGENERIC;
case DEMUX_GET_TITLE:
if (demux->ops->demux.get_title != NULL) {
int *title = va_arg(args, int *);
return demux->ops->demux.get_title(demux, title);
}
return VLC_EGENERIC;
case DEMUX_GET_SEEKPOINT:
if (demux->ops->demux.get_seekpoint != NULL) {
int *seekpoint = va_arg(args, int *);
return demux->ops->demux.get_seekpoint(demux, seekpoint);
}
return VLC_EGENERIC;
case DEMUX_GET_META:
if (demux->ops->get_meta != NULL) {
vlc_meta_t *meta = va_arg(args, vlc_meta_t *);
return demux->ops->get_meta(demux, meta);
}
return VLC_EGENERIC;
case DEMUX_GET_SIGNAL:
if (demux->ops->get_signal != NULL) {
double *quality = va_arg(args, double *);
double *strength = va_arg(args, double *);
return demux->ops->get_signal(demux, quality, strength);
}
return VLC_EGENERIC;
case DEMUX_GET_TYPE:
if (demux->ops->get_type != NULL) {
int *type = va_arg(args, int *);
return demux->ops->get_type(demux, type);
}
return VLC_EGENERIC;
case DEMUX_GET_POSITION:
if (demux->ops->demux.get_position != NULL) {
*va_arg(args, double *) = demux->ops->demux.get_position(demux);
return VLC_SUCCESS;
}
return VLC_EGENERIC;
case DEMUX_GET_LENGTH:
if (demux->ops->demux.get_length != NULL) {
*va_arg(args, vlc_tick_t *) = demux->ops->demux.get_length(demux);
return VLC_SUCCESS;
}
return VLC_EGENERIC;
case DEMUX_GET_TIME:
if (demux->ops->demux.get_time != NULL) {
*va_arg(args, vlc_tick_t *) = demux->ops->demux.get_time(demux);
return VLC_SUCCESS;
}
return VLC_EGENERIC;
case DEMUX_GET_NORMAL_TIME:
if (demux->ops->demux.get_normal_time != NULL) {
vlc_tick_t *normal_time = va_arg(args, vlc_tick_t *);
return demux->ops->demux.get_normal_time(demux, normal_time);
}
return VLC_EGENERIC;
case DEMUX_GET_FPS:
if (demux->ops->demux.get_fps != NULL) {
double *fps = va_arg(args, double *);
return demux->ops->demux.get_fps(demux, fps);
}
return VLC_EGENERIC;
case DEMUX_GET_ATTACHMENTS:
if (demux->ops->demux.get_attachments != NULL) {
input_attachment_t ***attachments = va_arg(args, input_attachment_t ***);
return demux->ops->demux.get_attachments(demux, attachments);
}
return VLC_EGENERIC;
case DEMUX_SET_SEEKPOINT:
if (demux->ops->set_seek_point != NULL) {
int seekpoint = va_arg(args, int);
return demux->ops->set_seek_point(demux, seekpoint);
}
return VLC_EGENERIC;
case DEMUX_SET_TITLE:
if (demux->ops->set_title != NULL) {
int title = va_arg(args, int);
return demux->ops->set_title(demux, title);
}
return VLC_EGENERIC;
case DEMUX_SET_PAUSE_STATE:
if (demux->ops->set_pause_state != NULL) {
bool pause_state = (bool)va_arg(args, int);
return demux->ops->set_pause_state(demux, pause_state);
}
return VLC_EGENERIC;
case DEMUX_SET_RECORD_STATE:
if (demux->ops->demux.set_record_state != NULL) {
bool record_state = (bool)va_arg(args, int);
const char *dir_path = NULL;
if (record_state) {
dir_path = va_arg(args, const char *);
}
return demux->ops->demux.set_record_state(demux, record_state, dir_path);
}
return VLC_EGENERIC;
case DEMUX_SET_POSITION:
{
if (demux->ops->demux.set_position != NULL) {
double position = va_arg(args, double);
bool precise = (bool)va_arg(args, int);
return demux->ops->demux.set_position(demux, position, precise);
}
return VLC_EGENERIC;
}
case DEMUX_SET_TIME:
{
if (demux->ops->demux.set_time != NULL) {
vlc_tick_t time = va_arg(args, vlc_tick_t);
bool precise = (bool)va_arg(args, int);
return demux->ops->demux.set_time(demux, time, precise);
}
return VLC_EGENERIC;
}
case DEMUX_SET_NEXT_DEMUX_TIME:
if (demux->ops->demux.set_next_demux_time != NULL) {
vlc_tick_t next_demux_time = va_arg(args, vlc_tick_t);
return demux->ops->demux.set_next_demux_time(demux, next_demux_time);
}
return VLC_EGENERIC;
case DEMUX_SET_RATE:
if (demux->ops->demux.set_next_demux_time != NULL) {
float *rate = va_arg(args, float *);
return demux->ops->demux.set_rate(demux, rate);
}
return VLC_EGENERIC;
case DEMUX_SET_GROUP_DEFAULT:
if (demux->ops->demux.set_group_default != NULL) {
return demux->ops->demux.set_group_default(demux);
}
return VLC_EGENERIC;
case DEMUX_SET_GROUP_ALL:
if (demux->ops->demux.set_group_all != NULL) {
return demux->ops->demux.set_group_all(demux);
}
return VLC_EGENERIC;
case DEMUX_SET_GROUP_LIST:
if (demux->ops->demux.set_group_list != NULL) {
size_t size = va_arg(args, size_t);
const int *idx = va_arg(args, const int *);
return demux->ops->demux.set_group_list(demux, size, idx);
}
return VLC_EGENERIC;
case DEMUX_SET_ES:
if (demux->ops->demux.set_es != NULL) {
int es = va_arg(args, int);
return demux->ops->demux.set_es(demux, es);
}
return VLC_EGENERIC;
case DEMUX_SET_ES_LIST:
if (demux->ops->demux.set_es_list != NULL) {
size_t size = va_arg(args, size_t);
const int *idx = va_arg(args, const int *);
return demux->ops->demux.set_es_list(demux, size, idx);
}
return VLC_EGENERIC;
case DEMUX_NAV_ACTIVATE:
if (demux->ops->demux.nav_activate != NULL) {
return demux->ops->demux.nav_activate(demux);
}
return VLC_EGENERIC;
case DEMUX_NAV_UP:
if (demux->ops->demux.nav_up != NULL) {
return demux->ops->demux.nav_up(demux);
}
return VLC_EGENERIC;
case DEMUX_NAV_DOWN:
if (demux->ops->demux.nav_down != NULL) {
return demux->ops->demux.nav_down(demux);
}
return VLC_EGENERIC;
case DEMUX_NAV_LEFT:
if (demux->ops->demux.nav_left != NULL) {
return demux->ops->demux.nav_left(demux);
}
return VLC_EGENERIC;
case DEMUX_NAV_RIGHT:
if (demux->ops->demux.nav_right != NULL) {
return demux->ops->demux.nav_right(demux);
}
return VLC_EGENERIC;
case DEMUX_NAV_POPUP:
if (demux->ops->demux.nav_popup != NULL) {
return demux->ops->demux.nav_popup(demux);
}
return VLC_EGENERIC;
case DEMUX_NAV_MENU:
if (demux->ops->demux.nav_menu != NULL) {
return demux->ops->demux.nav_menu(demux);
}
return VLC_EGENERIC;
case DEMUX_FILTER_ENABLE:
if (demux->ops->demux.filter_enable != NULL) {
return demux->ops->demux.filter_enable(demux);
}
return VLC_EGENERIC;
case DEMUX_FILTER_DISABLE:
if (demux->ops->demux.filter_disable != NULL) {
return demux->ops->demux.filter_disable(demux);
}
return VLC_EGENERIC;
case DEMUX_TEST_AND_CLEAR_FLAGS:
if (demux->ops->demux.test_and_clear_flags != NULL) {
unsigned *flags = va_arg(args, unsigned *);
return demux->ops->demux.test_and_clear_flags(demux, flags);
}
return VLC_EGENERIC;
default:
vlc_assert_unreachable();
}
}
/*****************************************************************************
* demux_vaControlHelper:
*****************************************************************************/
int demux_vaControlHelper( stream_t *s,
int64_t i_start, int64_t i_end,
int64_t i_bitrate, int i_align,
int i_query, va_list args )
{
int64_t i_tell;
double f, *pf;
vlc_tick_t i64;
if( i_end < 0 ) i_end = stream_Size( s );
if( i_start < 0 ) i_start = 0;
if( i_align <= 0 ) i_align = 1;
i_tell = vlc_stream_Tell( s );
static_control_match(CAN_PAUSE);
static_control_match(CAN_CONTROL_PACE);
static_control_match(GET_PTS_DELAY);
static_control_match(GET_META);
static_control_match(GET_SIGNAL);
static_control_match(SET_PAUSE_STATE);
switch( i_query )
{
case DEMUX_CAN_SEEK:
{
bool *b = va_arg( args, bool * );
if( (i_bitrate <= 0 && i_start >= i_end)
|| vlc_stream_Control( s, STREAM_CAN_SEEK, b ) )
*b = false;
break;
}
case DEMUX_CAN_PAUSE:
case DEMUX_CAN_CONTROL_PACE:
case DEMUX_GET_PTS_DELAY:
case DEMUX_GET_META:
case DEMUX_GET_SIGNAL:
case DEMUX_GET_TYPE:
case DEMUX_SET_PAUSE_STATE:
return vlc_stream_vaControl( s, i_query, args );
case DEMUX_GET_LENGTH:
if( i_bitrate > 0 && i_end > i_start )
{
*va_arg( args, vlc_tick_t * ) = vlc_tick_from_samples((i_end - i_start) * 8, i_bitrate);
return VLC_SUCCESS;
}
return VLC_EGENERIC;
case DEMUX_GET_TIME:
if( i_bitrate > 0 && i_tell >= i_start )
{
*va_arg( args, vlc_tick_t * ) = vlc_tick_from_samples((i_tell - i_start) * 8, i_bitrate);
return VLC_SUCCESS;
}
return VLC_EGENERIC;
case DEMUX_GET_POSITION:
pf = va_arg( args, double * );
if( i_start < i_end )
{
*pf = (double)( i_tell - i_start ) /
(double)( i_end - i_start );
return VLC_SUCCESS;
}
return VLC_EGENERIC;
case DEMUX_GET_NORMAL_TIME:
return VLC_EGENERIC;
case DEMUX_SET_POSITION:
f = va_arg( args, double );
if( i_start < i_end && f >= 0.0 && f <= 1.0 )
{
int64_t i_block = (f * ( i_end - i_start )) / i_align;
if( vlc_stream_Seek( s, i_start + i_block * i_align ) )
{
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
return VLC_EGENERIC;
case DEMUX_SET_TIME:
i64 = va_arg( args, vlc_tick_t );
if( i_bitrate > 0 && i64 >= 0 )
{
int64_t i_block = samples_from_vlc_tick( i64, i_bitrate ) / (8 * i_align);
if( vlc_stream_Seek( s, i_start + i_block * i_align ) )
{
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
return VLC_EGENERIC;
case DEMUX_GET_FPS:
case DEMUX_HAS_UNSUPPORTED_META:
case DEMUX_SET_NEXT_DEMUX_TIME:
case DEMUX_GET_TITLE_INFO:
case DEMUX_SET_GROUP_DEFAULT:
case DEMUX_SET_GROUP_ALL:
case DEMUX_SET_GROUP_LIST:
case DEMUX_SET_ES:
case DEMUX_SET_ES_LIST:
case DEMUX_GET_ATTACHMENTS:
case DEMUX_CAN_RECORD:
case DEMUX_TEST_AND_CLEAR_FLAGS:
case DEMUX_GET_TITLE:
case DEMUX_GET_SEEKPOINT:
case DEMUX_NAV_ACTIVATE:
case DEMUX_NAV_UP:
case DEMUX_NAV_DOWN:
case DEMUX_NAV_LEFT:
case DEMUX_NAV_RIGHT:
case DEMUX_NAV_POPUP:
case DEMUX_NAV_MENU:
case DEMUX_FILTER_ENABLE:
case DEMUX_FILTER_DISABLE:
return VLC_EGENERIC;
case DEMUX_SET_TITLE:
case DEMUX_SET_SEEKPOINT:
case DEMUX_SET_RECORD_STATE:
assert(0);
default:
msg_Err( s, "unknown query 0x%x in %s", i_query, __func__ );
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
struct packetizer_owner
{
decoder_t packetizer;
es_format_t fmt_in;
};
/****************************************************************************
* Utility functions
****************************************************************************/
decoder_t *demux_PacketizerNew( vlc_object_t *p_demux, es_format_t *p_fmt, const char *psz_msg )
{
struct packetizer_owner *owner = vlc_custom_create( p_demux, sizeof( *owner ),
"demux packetizer" );
if( !owner )
{
es_format_Clean( p_fmt );
return NULL;
}
decoder_t *p_packetizer = &owner->packetizer;
p_fmt->b_packetized = false;
p_packetizer->pf_decode = NULL;
p_packetizer->pf_packetize = NULL;
owner->fmt_in = *p_fmt;
p_packetizer->fmt_in = &owner->fmt_in;
es_format_Init( &p_packetizer->fmt_out, p_fmt->i_cat, 0 );
p_packetizer->p_module = module_need( p_packetizer, "packetizer", NULL, false );
if( !p_packetizer->p_module )
{
es_format_Clean( p_fmt );
vlc_object_delete(p_packetizer);
msg_Err( p_demux, "cannot find packetizer for %s", psz_msg );
return NULL;
}
return p_packetizer;
}
void demux_PacketizerDestroy( decoder_t *p_packetizer )
{
struct packetizer_owner *owner = container_of(p_packetizer, struct packetizer_owner, packetizer);
if( p_packetizer->p_module )
module_unneed( p_packetizer, p_packetizer->p_module );
es_format_Clean( &owner->fmt_in );
es_format_Clean( &p_packetizer->fmt_out );
if( p_packetizer->p_description )
vlc_meta_Delete( p_packetizer->p_description );
vlc_object_delete(p_packetizer);
}
unsigned demux_TestAndClearFlags( demux_t *p_demux, unsigned flags )
{
unsigned update = flags;
if (demux_Control( p_demux, DEMUX_TEST_AND_CLEAR_FLAGS, &update))
return 0;
return update;
}
int demux_GetTitle( demux_t *p_demux )
{
int title;
if (demux_Control(p_demux, DEMUX_GET_TITLE, &title))
title = 0;
return title;
}
int demux_GetSeekpoint( demux_t *p_demux )
{
int seekpoint;
if (demux_Control(p_demux, DEMUX_GET_SEEKPOINT, &seekpoint))
seekpoint = 0;
return seekpoint;
}
static demux_t *demux_FilterNew( demux_t *p_next, const char *p_name )
{
struct vlc_demux_private *priv;
demux_t *p_demux = vlc_stream_CustomNew(VLC_OBJECT(p_next),
demux_DestroyDemux, sizeof (*priv),
"demux filter");
if (unlikely(p_demux == NULL))
return NULL;
priv = vlc_stream_Private(p_demux);
p_demux->s = p_next;
p_demux->p_input_item = NULL;
p_demux->p_sys = NULL;
p_demux->psz_name = NULL;
p_demux->psz_url = NULL;
p_demux->psz_location = NULL;
p_demux->psz_filepath = NULL;
p_demux->out = NULL;
priv->module = module_need(p_demux, "demux_filter", p_name,
p_name != NULL);
if (priv->module == NULL)
goto error;
return p_demux;
error:
stream_CommonDelete( p_demux );
return NULL;
}
demux_t *demux_FilterChainNew( demux_t *p_demux, const char *psz_chain )
{
if( !psz_chain || !*psz_chain )
return NULL;
char *psz_parser = strdup(psz_chain);
if(!psz_parser)
return NULL;
/* parse chain */
while(psz_parser)
{
config_chain_t *p_cfg;
char *psz_name;
char *psz_rest_chain = config_ChainCreate( &psz_name, &p_cfg, psz_parser );
free( psz_parser );
psz_parser = psz_rest_chain;
demux_t *filter = demux_FilterNew(p_demux, psz_name);
if (filter != NULL)
p_demux = filter;
free(psz_name);
config_ChainDestroy(p_cfg);
}
return p_demux;
}
static bool demux_filter_enable_disable(demux_t *p_demux,
const char *psz_demux, bool b_enable)
{
struct vlc_demux_private *priv = vlc_stream_Private(p_demux);
if ( psz_demux &&
(strcmp(module_GetShortName(priv->module), psz_demux) == 0
|| strcmp(module_GetLongName(priv->module), psz_demux) == 0) )
{
demux_Control( p_demux,
b_enable ? DEMUX_FILTER_ENABLE : DEMUX_FILTER_DISABLE );
return true;
}
return false;
}
bool demux_FilterEnable( demux_t *p_demux_chain, const char* psz_demux )
{
return demux_filter_enable_disable( p_demux_chain, psz_demux, true );
}
bool demux_FilterDisable( demux_t *p_demux_chain, const char* psz_demux )
{
return demux_filter_enable_disable( p_demux_chain, psz_demux, false );
}
View Git Blame Copy Permalink