2001-07-22 14:18:56 +00:00
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/*
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2011-10-30 16:56:57 +00:00
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* buffered I/O
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2002-05-25 22:34:32 +00:00
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* Copyright (c) 2000,2001 Fabrice Bellard
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2001-07-22 14:18:56 +00:00
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*
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2011-03-18 17:35:10 +00:00
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* This file is part of Libav.
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2006-10-07 15:30:46 +00:00
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*
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2011-03-18 17:35:10 +00:00
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* Libav is free software; you can redistribute it and/or
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2002-05-25 22:34:32 +00:00
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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2006-10-07 15:30:46 +00:00
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* version 2.1 of the License, or (at your option) any later version.
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2001-07-22 14:18:56 +00:00
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*
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2011-03-18 17:35:10 +00:00
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* Libav is distributed in the hope that it will be useful,
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2001-07-22 14:18:56 +00:00
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
2002-05-25 22:34:32 +00:00
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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2001-07-22 14:18:56 +00:00
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*
|
2002-05-25 22:34:32 +00:00
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* You should have received a copy of the GNU Lesser General Public
|
2011-03-18 17:35:10 +00:00
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* License along with Libav; if not, write to the Free Software
|
2006-01-12 22:43:26 +00:00
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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2001-07-22 14:18:56 +00:00
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*/
|
2008-05-09 11:56:36 +00:00
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#include "libavutil/crc.h"
|
2011-11-06 21:03:45 +00:00
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#include "libavutil/dict.h"
|
2009-01-16 15:34:37 +00:00
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#include "libavutil/intreadwrite.h"
|
2011-11-06 21:03:45 +00:00
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#include "libavutil/log.h"
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#include "libavutil/opt.h"
|
2001-07-22 14:18:56 +00:00
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#include "avformat.h"
|
2003-02-10 09:35:32 +00:00
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#include "avio.h"
|
2011-02-20 10:04:13 +00:00
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#include "avio_internal.h"
|
2010-07-09 12:14:33 +00:00
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#include "internal.h"
|
2011-03-31 14:25:10 +00:00
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#include "url.h"
|
2002-07-24 17:51:50 +00:00
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#include <stdarg.h>
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2001-07-22 14:18:56 +00:00
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#define IO_BUFFER_SIZE 32768
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2010-07-17 05:26:30 +00:00
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/**
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* Do seeks within this distance ahead of the current buffer by skipping
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* data instead of calling the protocol seek function, for seekable
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* protocols.
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*/
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#define SHORT_SEEK_THRESHOLD 4096
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|
2016-02-19 13:29:10 +00:00
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typedef struct AVIOInternal {
|
2016-01-20 10:11:38 +00:00
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const AVClass *class;
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char *protocol_whitelist;
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char *protocol_blacklist;
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|
2016-02-19 13:29:10 +00:00
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URLContext *h;
|
2016-02-19 17:02:45 +00:00
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const URLProtocol **protocols;
|
2016-02-19 13:29:10 +00:00
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} AVIOInternal;
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|
2016-01-20 10:11:38 +00:00
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static void *io_priv_child_next(void *obj, void *prev)
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{
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AVIOInternal *internal = obj;
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|
return prev ? NULL : internal->h;
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}
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static const AVClass *io_priv_child_class_next(const AVClass *prev)
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{
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|
return prev ? NULL : &ffurl_context_class;
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}
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#define OFFSET(x) offsetof(AVIOInternal, x)
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static const AVOption io_priv_options[] = {
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{ "protocol_whitelist", "A comma-separated list of allowed protocols",
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OFFSET(protocol_whitelist), AV_OPT_TYPE_STRING },
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{ "protocol_blacklist", "A comma-separated list of forbidden protocols",
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OFFSET(protocol_whitelist), AV_OPT_TYPE_STRING },
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{ NULL },
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};
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static const AVClass io_priv_class = {
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.class_name = "AVIOContext",
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.item_name = av_default_item_name,
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.version = LIBAVUTIL_VERSION_INT,
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.option = io_priv_options,
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.child_next = io_priv_child_next,
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.child_class_next = io_priv_child_class_next,
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};
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|
2015-02-27 23:06:28 +00:00
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static void *ff_avio_child_next(void *obj, void *prev)
|
2011-11-06 21:03:45 +00:00
|
|
|
{
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|
AVIOContext *s = obj;
|
2016-01-20 10:11:38 +00:00
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|
return prev ? NULL : s->opaque;
|
2011-11-06 21:03:45 +00:00
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}
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|
2015-02-27 23:06:28 +00:00
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static const AVClass *ff_avio_child_class_next(const AVClass *prev)
|
2011-11-06 21:03:45 +00:00
|
|
|
{
|
2016-01-20 10:11:38 +00:00
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|
return prev ? NULL : &io_priv_class;
|
2011-11-06 21:03:45 +00:00
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|
}
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|
2015-02-27 23:06:28 +00:00
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|
static const AVOption ff_avio_options[] = {
|
2011-11-06 21:03:45 +00:00
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{ NULL },
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|
};
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|
2015-02-27 23:06:28 +00:00
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const AVClass ff_avio_class = {
|
2011-11-06 21:03:45 +00:00
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|
.class_name = "AVIOContext",
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|
.item_name = av_default_item_name,
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|
.version = LIBAVUTIL_VERSION_INT,
|
2015-02-27 23:06:28 +00:00
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|
.option = ff_avio_options,
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|
.child_next = ff_avio_child_next,
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.child_class_next = ff_avio_child_class_next,
|
2011-11-06 21:03:45 +00:00
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|
};
|
2012-01-12 12:31:55 +00:00
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|
2011-02-20 10:04:12 +00:00
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static void fill_buffer(AVIOContext *s);
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static int url_resetbuf(AVIOContext *s, int flags);
|
2006-09-26 17:09:03 +00:00
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|
2011-02-20 10:04:13 +00:00
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int ffio_init_context(AVIOContext *s,
|
2001-07-22 14:18:56 +00:00
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unsigned char *buffer,
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int buffer_size,
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int write_flag,
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void *opaque,
|
2003-02-11 16:35:48 +00:00
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int (*read_packet)(void *opaque, uint8_t *buf, int buf_size),
|
2004-10-08 20:09:52 +00:00
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int (*write_packet)(void *opaque, uint8_t *buf, int buf_size),
|
2008-10-03 10:16:29 +00:00
|
|
|
int64_t (*seek)(void *opaque, int64_t offset, int whence))
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
2012-12-09 03:15:45 +00:00
|
|
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s->buffer = buffer;
|
2001-07-22 14:18:56 +00:00
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s->buffer_size = buffer_size;
|
2012-12-09 03:15:45 +00:00
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s->buf_ptr = buffer;
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s->opaque = opaque;
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|
2011-04-15 14:42:09 +00:00
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url_resetbuf(s, write_flag ? AVIO_FLAG_WRITE : AVIO_FLAG_READ);
|
2012-12-09 03:15:45 +00:00
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s->write_packet = write_packet;
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s->read_packet = read_packet;
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s->seek = seek;
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s->pos = 0;
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s->must_flush = 0;
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s->eof_reached = 0;
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s->error = 0;
|
2013-07-23 09:25:34 +00:00
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|
s->seekable = seek ? AVIO_SEEKABLE_NORMAL : 0;
|
2002-07-24 17:51:50 +00:00
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s->max_packet_size = 0;
|
2012-12-09 03:15:45 +00:00
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s->update_checksum = NULL;
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if (!read_packet && !write_flag) {
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s->pos = buffer_size;
|
2006-10-20 09:32:48 +00:00
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|
s->buf_end = s->buffer + buffer_size;
|
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|
}
|
2007-11-28 19:46:49 +00:00
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|
s->read_pause = NULL;
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s->read_seek = NULL;
|
2012-12-09 03:15:45 +00:00
|
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|
2016-05-04 14:18:35 +00:00
|
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|
s->write_data_type = NULL;
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|
s->ignore_boundary_point = 0;
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s->current_type = AVIO_DATA_MARKER_UNKNOWN;
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s->last_time = AV_NOPTS_VALUE;
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|
2001-07-22 14:18:56 +00:00
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|
return 0;
|
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|
}
|
2005-12-17 18:14:38 +00:00
|
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|
2011-02-20 14:03:29 +00:00
|
|
|
AVIOContext *avio_alloc_context(
|
2007-12-22 16:18:07 +00:00
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|
unsigned char *buffer,
|
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|
|
int buffer_size,
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int write_flag,
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void *opaque,
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int (*read_packet)(void *opaque, uint8_t *buf, int buf_size),
|
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int (*write_packet)(void *opaque, uint8_t *buf, int buf_size),
|
2008-12-13 13:39:13 +00:00
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|
int64_t (*seek)(void *opaque, int64_t offset, int whence))
|
|
|
|
{
|
2011-02-20 10:04:12 +00:00
|
|
|
AVIOContext *s = av_mallocz(sizeof(AVIOContext));
|
2011-05-14 09:27:31 +00:00
|
|
|
if (!s)
|
|
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|
return NULL;
|
2011-02-20 10:04:13 +00:00
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|
ffio_init_context(s, buffer, buffer_size, write_flag, opaque,
|
2007-12-22 16:18:07 +00:00
|
|
|
read_packet, write_packet, seek);
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|
return s;
|
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|
}
|
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|
2011-02-20 10:04:12 +00:00
|
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|
static void flush_buffer(AVIOContext *s)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
|
|
|
if (s->buf_ptr > s->buffer) {
|
2016-05-04 14:18:35 +00:00
|
|
|
if (!s->error) {
|
|
|
|
int ret = 0;
|
|
|
|
if (s->write_data_type)
|
|
|
|
ret = s->write_data_type(s->opaque, s->buffer,
|
|
|
|
s->buf_ptr - s->buffer,
|
|
|
|
s->current_type,
|
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s->last_time);
|
|
|
|
else if (s->write_packet)
|
|
|
|
ret = s->write_packet(s->opaque, s->buffer,
|
2012-12-09 03:15:45 +00:00
|
|
|
s->buf_ptr - s->buffer);
|
|
|
|
if (ret < 0) {
|
2004-10-08 20:09:52 +00:00
|
|
|
s->error = ret;
|
|
|
|
}
|
|
|
|
}
|
2016-05-04 14:18:35 +00:00
|
|
|
if (s->current_type == AVIO_DATA_MARKER_SYNC_POINT ||
|
|
|
|
s->current_type == AVIO_DATA_MARKER_BOUNDARY_POINT) {
|
|
|
|
s->current_type = AVIO_DATA_MARKER_UNKNOWN;
|
|
|
|
}
|
|
|
|
s->last_time = AV_NOPTS_VALUE;
|
2012-12-09 03:15:45 +00:00
|
|
|
if (s->update_checksum) {
|
|
|
|
s->checksum = s->update_checksum(s->checksum, s->checksum_ptr,
|
|
|
|
s->buf_ptr - s->checksum_ptr);
|
|
|
|
s->checksum_ptr = s->buffer;
|
2004-04-05 12:02:10 +00:00
|
|
|
}
|
2001-07-22 14:18:56 +00:00
|
|
|
s->pos += s->buf_ptr - s->buffer;
|
|
|
|
}
|
|
|
|
s->buf_ptr = s->buffer;
|
|
|
|
}
|
|
|
|
|
2011-02-21 18:28:17 +00:00
|
|
|
void avio_w8(AVIOContext *s, int b)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
2012-01-07 18:07:42 +00:00
|
|
|
*s->buf_ptr++ = b;
|
2005-12-17 18:14:38 +00:00
|
|
|
if (s->buf_ptr >= s->buf_end)
|
2001-07-22 14:18:56 +00:00
|
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|
flush_buffer(s);
|
|
|
|
}
|
|
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|
2011-02-21 19:02:20 +00:00
|
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|
void ffio_fill(AVIOContext *s, int b, int count)
|
2011-01-02 10:45:07 +00:00
|
|
|
{
|
|
|
|
while (count > 0) {
|
|
|
|
int len = FFMIN(s->buf_end - s->buf_ptr, count);
|
|
|
|
memset(s->buf_ptr, b, len);
|
|
|
|
s->buf_ptr += len;
|
|
|
|
|
|
|
|
if (s->buf_ptr >= s->buf_end)
|
|
|
|
flush_buffer(s);
|
|
|
|
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|
count -= len;
|
|
|
|
}
|
|
|
|
}
|
|
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|
|
2011-02-21 18:28:17 +00:00
|
|
|
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
|
|
|
while (size > 0) {
|
2009-10-12 16:38:08 +00:00
|
|
|
int len = FFMIN(s->buf_end - s->buf_ptr, size);
|
2001-07-22 14:18:56 +00:00
|
|
|
memcpy(s->buf_ptr, buf, len);
|
|
|
|
s->buf_ptr += len;
|
|
|
|
|
2005-12-17 18:14:38 +00:00
|
|
|
if (s->buf_ptr >= s->buf_end)
|
2001-07-22 14:18:56 +00:00
|
|
|
flush_buffer(s);
|
|
|
|
|
|
|
|
buf += len;
|
|
|
|
size -= len;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2011-03-14 19:39:06 +00:00
|
|
|
void avio_flush(AVIOContext *s)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
|
|
|
flush_buffer(s);
|
|
|
|
s->must_flush = 0;
|
|
|
|
}
|
|
|
|
|
2011-02-28 13:57:54 +00:00
|
|
|
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
2008-10-03 10:16:29 +00:00
|
|
|
int64_t offset1;
|
|
|
|
int64_t pos;
|
2010-03-24 10:41:58 +00:00
|
|
|
int force = whence & AVSEEK_FORCE;
|
|
|
|
whence &= ~AVSEEK_FORCE;
|
2007-11-21 07:41:00 +00:00
|
|
|
|
|
|
|
if(!s)
|
|
|
|
return AVERROR(EINVAL);
|
|
|
|
|
|
|
|
pos = s->pos - (s->write_flag ? 0 : (s->buf_end - s->buffer));
|
2001-07-22 14:18:56 +00:00
|
|
|
|
|
|
|
if (whence != SEEK_CUR && whence != SEEK_SET)
|
2007-02-13 18:26:14 +00:00
|
|
|
return AVERROR(EINVAL);
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2006-09-22 10:03:04 +00:00
|
|
|
if (whence == SEEK_CUR) {
|
|
|
|
offset1 = pos + (s->buf_ptr - s->buffer);
|
|
|
|
if (offset == 0)
|
|
|
|
return offset1;
|
|
|
|
offset += offset1;
|
|
|
|
}
|
|
|
|
offset1 = offset - pos;
|
|
|
|
if (!s->must_flush &&
|
2015-01-24 12:06:19 +00:00
|
|
|
offset1 >= 0 && offset1 < (s->buf_end - s->buffer)) {
|
2006-09-22 10:03:04 +00:00
|
|
|
/* can do the seek inside the buffer */
|
|
|
|
s->buf_ptr = s->buffer + offset1;
|
2016-09-27 14:26:37 +00:00
|
|
|
} else if ((!(s->seekable & AVIO_SEEKABLE_NORMAL) ||
|
2010-07-17 05:26:30 +00:00
|
|
|
offset1 <= s->buf_end + SHORT_SEEK_THRESHOLD - s->buffer) &&
|
|
|
|
!s->write_flag && offset1 >= 0 &&
|
2010-04-08 09:47:32 +00:00
|
|
|
(whence != SEEK_END || force)) {
|
2006-09-26 17:09:03 +00:00
|
|
|
while(s->pos < offset && !s->eof_reached)
|
|
|
|
fill_buffer(s);
|
2007-12-16 17:52:46 +00:00
|
|
|
if (s->eof_reached)
|
2010-03-18 00:22:58 +00:00
|
|
|
return AVERROR_EOF;
|
2006-09-26 17:09:03 +00:00
|
|
|
s->buf_ptr = s->buf_end + offset - s->pos;
|
2006-09-22 10:03:04 +00:00
|
|
|
} else {
|
2010-04-21 21:19:25 +00:00
|
|
|
int64_t res;
|
2007-01-30 10:48:39 +00:00
|
|
|
|
2006-09-22 10:03:04 +00:00
|
|
|
if (s->write_flag) {
|
2001-07-22 14:18:56 +00:00
|
|
|
flush_buffer(s);
|
|
|
|
s->must_flush = 1;
|
|
|
|
}
|
2010-04-21 21:19:25 +00:00
|
|
|
if (!s->seek)
|
|
|
|
return AVERROR(EPIPE);
|
|
|
|
if ((res = s->seek(s->opaque, offset, SEEK_SET)) < 0)
|
2007-01-30 10:48:39 +00:00
|
|
|
return res;
|
2008-07-31 19:40:06 +00:00
|
|
|
if (!s->write_flag)
|
|
|
|
s->buf_end = s->buffer;
|
|
|
|
s->buf_ptr = s->buffer;
|
2006-09-22 10:03:04 +00:00
|
|
|
s->pos = offset;
|
2001-07-22 14:18:56 +00:00
|
|
|
}
|
2006-09-22 10:03:04 +00:00
|
|
|
s->eof_reached = 0;
|
2001-07-22 14:18:56 +00:00
|
|
|
return offset;
|
|
|
|
}
|
|
|
|
|
2011-03-04 18:57:36 +00:00
|
|
|
int64_t avio_size(AVIOContext *s)
|
2005-05-19 00:06:27 +00:00
|
|
|
{
|
2008-10-03 10:16:29 +00:00
|
|
|
int64_t size;
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2012-12-09 03:15:45 +00:00
|
|
|
if (!s)
|
2007-11-21 07:41:00 +00:00
|
|
|
return AVERROR(EINVAL);
|
|
|
|
|
2005-05-19 00:06:27 +00:00
|
|
|
if (!s->seek)
|
2010-04-18 17:37:21 +00:00
|
|
|
return AVERROR(ENOSYS);
|
2007-01-01 21:49:09 +00:00
|
|
|
size = s->seek(s->opaque, 0, AVSEEK_SIZE);
|
2012-12-09 03:15:45 +00:00
|
|
|
if (size < 0) {
|
2007-01-28 02:38:02 +00:00
|
|
|
if ((size = s->seek(s->opaque, -1, SEEK_END)) < 0)
|
|
|
|
return size;
|
|
|
|
size++;
|
2007-01-01 21:49:50 +00:00
|
|
|
s->seek(s->opaque, s->pos, SEEK_SET);
|
2007-01-01 21:49:09 +00:00
|
|
|
}
|
2005-05-19 00:06:27 +00:00
|
|
|
return size;
|
|
|
|
}
|
|
|
|
|
2011-02-21 18:28:17 +00:00
|
|
|
void avio_wl32(AVIOContext *s, unsigned int val)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
2011-02-21 18:28:17 +00:00
|
|
|
avio_w8(s, val);
|
|
|
|
avio_w8(s, val >> 8);
|
|
|
|
avio_w8(s, val >> 16);
|
|
|
|
avio_w8(s, val >> 24);
|
2001-07-22 14:18:56 +00:00
|
|
|
}
|
|
|
|
|
2011-02-21 18:28:17 +00:00
|
|
|
void avio_wb32(AVIOContext *s, unsigned int val)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
2011-02-21 18:28:17 +00:00
|
|
|
avio_w8(s, val >> 24);
|
|
|
|
avio_w8(s, val >> 16);
|
|
|
|
avio_w8(s, val >> 8);
|
|
|
|
avio_w8(s, val);
|
2001-07-22 14:18:56 +00:00
|
|
|
}
|
|
|
|
|
2011-02-20 10:04:12 +00:00
|
|
|
int avio_put_str(AVIOContext *s, const char *str)
|
2011-01-21 19:18:07 +00:00
|
|
|
{
|
|
|
|
int len = 1;
|
|
|
|
if (str) {
|
|
|
|
len += strlen(str);
|
2011-02-21 18:28:17 +00:00
|
|
|
avio_write(s, (const unsigned char *) str, len);
|
2011-01-21 19:18:07 +00:00
|
|
|
} else
|
2011-02-21 18:28:17 +00:00
|
|
|
avio_w8(s, 0);
|
2011-01-21 19:18:07 +00:00
|
|
|
return len;
|
2002-09-12 02:26:58 +00:00
|
|
|
}
|
|
|
|
|
2015-06-05 21:21:18 +00:00
|
|
|
#define PUT_STR16(type, write) \
|
|
|
|
int avio_put_str16 ## type(AVIOContext * s, const char *str) \
|
|
|
|
{ \
|
|
|
|
const uint8_t *q = str; \
|
|
|
|
int ret = 0; \
|
|
|
|
\
|
|
|
|
while (*q) { \
|
|
|
|
uint32_t ch; \
|
|
|
|
uint16_t tmp; \
|
|
|
|
\
|
|
|
|
GET_UTF8(ch, *q++, break; ) \
|
|
|
|
PUT_UTF16(ch, tmp, write(s, tmp); ret += 2; ) \
|
|
|
|
} \
|
|
|
|
write(s, 0); \
|
|
|
|
ret += 2; \
|
|
|
|
return ret; \
|
|
|
|
}
|
2011-01-21 19:18:08 +00:00
|
|
|
|
2015-06-05 21:21:18 +00:00
|
|
|
PUT_STR16(le, avio_wl16)
|
|
|
|
PUT_STR16(be, avio_wb16)
|
2011-01-21 19:18:08 +00:00
|
|
|
|
2015-06-05 21:21:18 +00:00
|
|
|
#undef PUT_STR16
|
2011-01-21 19:18:08 +00:00
|
|
|
|
2012-12-09 03:15:45 +00:00
|
|
|
int ff_get_v_length(uint64_t val)
|
|
|
|
{
|
|
|
|
int i = 1;
|
2010-07-09 12:14:33 +00:00
|
|
|
|
2012-12-09 03:15:45 +00:00
|
|
|
while (val >>= 7)
|
2010-07-09 12:14:33 +00:00
|
|
|
i++;
|
|
|
|
|
|
|
|
return i;
|
|
|
|
}
|
|
|
|
|
2012-12-09 03:15:45 +00:00
|
|
|
void ff_put_v(AVIOContext *bc, uint64_t val)
|
|
|
|
{
|
|
|
|
int i = ff_get_v_length(val);
|
2010-07-09 12:14:33 +00:00
|
|
|
|
2012-12-09 03:15:45 +00:00
|
|
|
while (--i > 0)
|
|
|
|
avio_w8(bc, 128 | (val >> (7 * i)));
|
2010-07-09 12:14:33 +00:00
|
|
|
|
2012-12-09 03:15:45 +00:00
|
|
|
avio_w8(bc, val & 127);
|
2010-07-09 12:14:33 +00:00
|
|
|
}
|
|
|
|
|
2011-02-21 18:28:17 +00:00
|
|
|
void avio_wl64(AVIOContext *s, uint64_t val)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
2011-02-21 18:28:17 +00:00
|
|
|
avio_wl32(s, (uint32_t)(val & 0xffffffff));
|
|
|
|
avio_wl32(s, (uint32_t)(val >> 32));
|
2001-07-22 14:18:56 +00:00
|
|
|
}
|
|
|
|
|
2011-02-21 18:28:17 +00:00
|
|
|
void avio_wb64(AVIOContext *s, uint64_t val)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
2011-02-21 18:28:17 +00:00
|
|
|
avio_wb32(s, (uint32_t)(val >> 32));
|
|
|
|
avio_wb32(s, (uint32_t)(val & 0xffffffff));
|
2001-07-22 14:18:56 +00:00
|
|
|
}
|
|
|
|
|
2011-02-21 18:28:17 +00:00
|
|
|
void avio_wl16(AVIOContext *s, unsigned int val)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
2011-02-21 18:28:17 +00:00
|
|
|
avio_w8(s, val);
|
|
|
|
avio_w8(s, val >> 8);
|
2001-07-22 14:18:56 +00:00
|
|
|
}
|
|
|
|
|
2011-02-21 18:28:17 +00:00
|
|
|
void avio_wb16(AVIOContext *s, unsigned int val)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
2011-02-21 18:28:17 +00:00
|
|
|
avio_w8(s, val >> 8);
|
|
|
|
avio_w8(s, val);
|
2001-07-22 14:18:56 +00:00
|
|
|
}
|
|
|
|
|
2011-02-21 18:28:17 +00:00
|
|
|
void avio_wl24(AVIOContext *s, unsigned int val)
|
2006-02-09 22:52:23 +00:00
|
|
|
{
|
2011-02-21 18:28:17 +00:00
|
|
|
avio_wl16(s, val & 0xffff);
|
|
|
|
avio_w8(s, val >> 16);
|
2006-02-09 22:52:23 +00:00
|
|
|
}
|
|
|
|
|
2011-02-21 18:28:17 +00:00
|
|
|
void avio_wb24(AVIOContext *s, unsigned int val)
|
2005-07-19 14:41:08 +00:00
|
|
|
{
|
2011-02-21 18:28:17 +00:00
|
|
|
avio_wb16(s, val >> 8);
|
|
|
|
avio_w8(s, val);
|
2005-07-19 14:41:08 +00:00
|
|
|
}
|
|
|
|
|
2016-05-04 14:18:35 +00:00
|
|
|
void avio_write_marker(AVIOContext *s, int64_t time, enum AVIODataMarkerType type)
|
|
|
|
{
|
|
|
|
if (!s->write_data_type)
|
|
|
|
return;
|
|
|
|
// If ignoring boundary points, just treat it as unknown
|
|
|
|
if (type == AVIO_DATA_MARKER_BOUNDARY_POINT && s->ignore_boundary_point)
|
|
|
|
type = AVIO_DATA_MARKER_UNKNOWN;
|
|
|
|
// Avoid unnecessary flushes if we are already in non-header/trailer
|
|
|
|
// data and setting the type to unknown
|
|
|
|
if (type == AVIO_DATA_MARKER_UNKNOWN &&
|
|
|
|
(s->current_type != AVIO_DATA_MARKER_HEADER &&
|
|
|
|
s->current_type != AVIO_DATA_MARKER_TRAILER))
|
|
|
|
return;
|
|
|
|
|
|
|
|
switch (type) {
|
|
|
|
case AVIO_DATA_MARKER_HEADER:
|
|
|
|
case AVIO_DATA_MARKER_TRAILER:
|
|
|
|
// For header/trailer, ignore a new marker of the same type;
|
|
|
|
// consecutive header/trailer markers can be merged.
|
|
|
|
if (type == s->current_type)
|
|
|
|
return;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
// If we've reached here, we have a new, noteworthy marker.
|
|
|
|
// Flush the previous data and mark the start of the new data.
|
|
|
|
avio_flush(s);
|
|
|
|
s->current_type = type;
|
|
|
|
s->last_time = time;
|
|
|
|
}
|
|
|
|
|
2001-07-22 14:18:56 +00:00
|
|
|
/* Input stream */
|
|
|
|
|
2011-02-20 10:04:12 +00:00
|
|
|
static void fill_buffer(AVIOContext *s)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
2012-12-09 03:15:45 +00:00
|
|
|
uint8_t *dst = !s->max_packet_size &&
|
|
|
|
s->buf_end - s->buffer < s->buffer_size ?
|
|
|
|
s->buf_end : s->buffer;
|
|
|
|
int len = s->buffer_size - (dst - s->buffer);
|
|
|
|
int max_buffer_size = s->max_packet_size ?
|
|
|
|
s->max_packet_size : IO_BUFFER_SIZE;
|
2008-10-18 17:30:37 +00:00
|
|
|
|
2012-12-19 17:48:21 +00:00
|
|
|
/* can't fill the buffer without read_packet, just set EOF if appropriate */
|
2012-01-03 17:11:36 +00:00
|
|
|
if (!s->read_packet && s->buf_ptr >= s->buf_end)
|
|
|
|
s->eof_reached = 1;
|
|
|
|
|
2002-07-24 17:51:50 +00:00
|
|
|
/* no need to do anything if EOF already reached */
|
|
|
|
if (s->eof_reached)
|
|
|
|
return;
|
2004-04-05 12:02:10 +00:00
|
|
|
|
2012-12-09 03:15:45 +00:00
|
|
|
if (s->update_checksum && dst == s->buffer) {
|
|
|
|
if (s->buf_end > s->checksum_ptr)
|
|
|
|
s->checksum = s->update_checksum(s->checksum, s->checksum_ptr,
|
|
|
|
s->buf_end - s->checksum_ptr);
|
|
|
|
s->checksum_ptr = s->buffer;
|
2004-04-05 12:02:10 +00:00
|
|
|
}
|
|
|
|
|
2010-04-08 09:02:27 +00:00
|
|
|
/* make buffer smaller in case it ended up large after probing */
|
|
|
|
if (s->buffer_size > max_buffer_size) {
|
2011-03-14 19:38:58 +00:00
|
|
|
ffio_set_buf_size(s, max_buffer_size);
|
2010-04-08 09:02:27 +00:00
|
|
|
|
|
|
|
s->checksum_ptr = dst = s->buffer;
|
|
|
|
len = s->buffer_size;
|
|
|
|
}
|
|
|
|
|
2012-12-09 03:15:45 +00:00
|
|
|
if (s->read_packet)
|
2011-01-13 06:22:43 +00:00
|
|
|
len = s->read_packet(s->opaque, dst, len);
|
2008-10-18 17:30:37 +00:00
|
|
|
else
|
|
|
|
len = 0;
|
2002-07-24 17:51:50 +00:00
|
|
|
if (len <= 0) {
|
|
|
|
/* do not modify buffer if EOF reached so that a seek back can
|
|
|
|
be done without rereading data */
|
2001-07-22 14:18:56 +00:00
|
|
|
s->eof_reached = 1;
|
2012-12-09 03:15:45 +00:00
|
|
|
if (len < 0)
|
|
|
|
s->error = len;
|
2002-07-24 17:51:50 +00:00
|
|
|
} else {
|
|
|
|
s->pos += len;
|
2008-10-18 17:30:37 +00:00
|
|
|
s->buf_ptr = dst;
|
|
|
|
s->buf_end = dst + len;
|
2001-07-22 14:18:56 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2008-12-13 13:39:13 +00:00
|
|
|
unsigned long ff_crc04C11DB7_update(unsigned long checksum, const uint8_t *buf,
|
|
|
|
unsigned int len)
|
|
|
|
{
|
2008-01-04 23:09:58 +00:00
|
|
|
return av_crc(av_crc_get_table(AV_CRC_32_IEEE), checksum, buf, len);
|
2007-10-30 00:01:25 +00:00
|
|
|
}
|
|
|
|
|
2014-04-13 12:23:57 +00:00
|
|
|
unsigned long ff_crcA001_update(unsigned long checksum, const uint8_t *buf,
|
|
|
|
unsigned int len)
|
|
|
|
{
|
|
|
|
return av_crc(av_crc_get_table(AV_CRC_16_ANSI_LE), checksum, buf, len);
|
|
|
|
}
|
|
|
|
|
2011-03-17 12:04:38 +00:00
|
|
|
unsigned long ffio_get_checksum(AVIOContext *s)
|
2008-12-13 13:39:13 +00:00
|
|
|
{
|
2012-12-09 03:15:45 +00:00
|
|
|
s->checksum = s->update_checksum(s->checksum, s->checksum_ptr,
|
|
|
|
s->buf_ptr - s->checksum_ptr);
|
|
|
|
s->update_checksum = NULL;
|
2004-04-05 12:02:10 +00:00
|
|
|
return s->checksum;
|
|
|
|
}
|
|
|
|
|
2011-03-17 11:56:25 +00:00
|
|
|
void ffio_init_checksum(AVIOContext *s,
|
2008-12-13 13:39:13 +00:00
|
|
|
unsigned long (*update_checksum)(unsigned long c, const uint8_t *p, unsigned int len),
|
|
|
|
unsigned long checksum)
|
|
|
|
{
|
2012-12-09 03:15:45 +00:00
|
|
|
s->update_checksum = update_checksum;
|
|
|
|
if (s->update_checksum) {
|
|
|
|
s->checksum = checksum;
|
|
|
|
s->checksum_ptr = s->buf_ptr;
|
2004-04-06 17:40:17 +00:00
|
|
|
}
|
2004-04-05 12:02:10 +00:00
|
|
|
}
|
|
|
|
|
2002-07-24 17:51:50 +00:00
|
|
|
/* XXX: put an inline version */
|
2011-02-21 15:43:01 +00:00
|
|
|
int avio_r8(AVIOContext *s)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
2010-07-25 14:33:40 +00:00
|
|
|
if (s->buf_ptr >= s->buf_end)
|
2001-07-22 14:18:56 +00:00
|
|
|
fill_buffer(s);
|
2010-07-25 14:35:12 +00:00
|
|
|
if (s->buf_ptr < s->buf_end)
|
|
|
|
return *s->buf_ptr++;
|
|
|
|
return 0;
|
2001-07-22 14:18:56 +00:00
|
|
|
}
|
|
|
|
|
2011-02-21 15:43:01 +00:00
|
|
|
int avio_read(AVIOContext *s, unsigned char *buf, int size)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
|
|
|
int len, size1;
|
|
|
|
|
|
|
|
size1 = size;
|
|
|
|
while (size > 0) {
|
|
|
|
len = s->buf_end - s->buf_ptr;
|
|
|
|
if (len > size)
|
|
|
|
len = size;
|
2013-01-01 20:57:36 +00:00
|
|
|
if (len == 0 || s->write_flag) {
|
2005-03-24 22:07:54 +00:00
|
|
|
if(size > s->buffer_size && !s->update_checksum){
|
2007-09-26 11:32:51 +00:00
|
|
|
if(s->read_packet)
|
2011-01-13 06:22:43 +00:00
|
|
|
len = s->read_packet(s->opaque, buf, size);
|
2005-03-24 22:07:54 +00:00
|
|
|
if (len <= 0) {
|
|
|
|
/* do not modify buffer if EOF reached so that a seek back can
|
|
|
|
be done without rereading data */
|
|
|
|
s->eof_reached = 1;
|
|
|
|
if(len<0)
|
|
|
|
s->error= len;
|
|
|
|
break;
|
|
|
|
} else {
|
|
|
|
s->pos += len;
|
|
|
|
size -= len;
|
|
|
|
buf += len;
|
|
|
|
s->buf_ptr = s->buffer;
|
|
|
|
s->buf_end = s->buffer/* + len*/;
|
|
|
|
}
|
2012-12-09 03:15:45 +00:00
|
|
|
} else {
|
2005-03-24 22:07:54 +00:00
|
|
|
fill_buffer(s);
|
|
|
|
len = s->buf_end - s->buf_ptr;
|
|
|
|
if (len == 0)
|
|
|
|
break;
|
|
|
|
}
|
2001-07-22 14:18:56 +00:00
|
|
|
} else {
|
|
|
|
memcpy(buf, s->buf_ptr, len);
|
|
|
|
buf += len;
|
|
|
|
s->buf_ptr += len;
|
|
|
|
size -= len;
|
|
|
|
}
|
|
|
|
}
|
2009-10-02 06:36:39 +00:00
|
|
|
if (size1 == size) {
|
2011-03-14 19:38:55 +00:00
|
|
|
if (s->error) return s->error;
|
2011-03-07 20:50:25 +00:00
|
|
|
if (s->eof_reached) return AVERROR_EOF;
|
2009-10-02 06:36:39 +00:00
|
|
|
}
|
2001-07-22 14:18:56 +00:00
|
|
|
return size1 - size;
|
|
|
|
}
|
|
|
|
|
2015-05-26 13:24:38 +00:00
|
|
|
int ffio_read_size(AVIOContext *s, unsigned char *buf, int size)
|
|
|
|
{
|
|
|
|
int ret = avio_read(s, buf, size);
|
|
|
|
if (ret != size)
|
|
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2013-08-07 22:22:38 +00:00
|
|
|
int ffio_read_indirect(AVIOContext *s, unsigned char *buf, int size, const unsigned char **data)
|
2013-07-31 22:46:08 +00:00
|
|
|
{
|
|
|
|
if (s->buf_end - s->buf_ptr >= size && !s->write_flag) {
|
|
|
|
*data = s->buf_ptr;
|
|
|
|
s->buf_ptr += size;
|
|
|
|
return size;
|
|
|
|
} else {
|
|
|
|
*data = buf;
|
|
|
|
return avio_read(s, buf, size);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2011-02-21 18:28:16 +00:00
|
|
|
int ffio_read_partial(AVIOContext *s, unsigned char *buf, int size)
|
2004-03-15 03:29:32 +00:00
|
|
|
{
|
|
|
|
int len;
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2012-12-09 03:15:45 +00:00
|
|
|
if (size < 0)
|
2005-01-12 00:16:25 +00:00
|
|
|
return -1;
|
2004-03-15 03:29:32 +00:00
|
|
|
|
2013-01-01 20:57:36 +00:00
|
|
|
if (s->read_packet && s->write_flag) {
|
|
|
|
len = s->read_packet(s->opaque, buf, size);
|
|
|
|
if (len > 0)
|
|
|
|
s->pos += len;
|
|
|
|
return len;
|
|
|
|
}
|
|
|
|
|
2004-03-15 03:29:32 +00:00
|
|
|
len = s->buf_end - s->buf_ptr;
|
|
|
|
if (len == 0) {
|
2013-01-01 22:25:37 +00:00
|
|
|
/* Reset the buf_end pointer to the start of the buffer, to make sure
|
|
|
|
* the fill_buffer call tries to read as much data as fits into the
|
|
|
|
* full buffer, instead of just what space is left after buf_end.
|
|
|
|
* This avoids returning partial packets at the end of the buffer,
|
|
|
|
* for packet based inputs.
|
|
|
|
*/
|
|
|
|
s->buf_end = s->buf_ptr = s->buffer;
|
2004-03-15 03:29:32 +00:00
|
|
|
fill_buffer(s);
|
|
|
|
len = s->buf_end - s->buf_ptr;
|
|
|
|
}
|
|
|
|
if (len > size)
|
|
|
|
len = size;
|
|
|
|
memcpy(buf, s->buf_ptr, len);
|
|
|
|
s->buf_ptr += len;
|
2009-10-02 06:36:39 +00:00
|
|
|
if (!len) {
|
2011-03-14 19:38:55 +00:00
|
|
|
if (s->error) return s->error;
|
2011-03-07 20:50:25 +00:00
|
|
|
if (s->eof_reached) return AVERROR_EOF;
|
2009-10-02 06:36:39 +00:00
|
|
|
}
|
2004-03-15 03:29:32 +00:00
|
|
|
return len;
|
|
|
|
}
|
|
|
|
|
2011-02-21 15:43:01 +00:00
|
|
|
unsigned int avio_rl16(AVIOContext *s)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
|
|
|
unsigned int val;
|
2011-02-21 15:43:01 +00:00
|
|
|
val = avio_r8(s);
|
|
|
|
val |= avio_r8(s) << 8;
|
2001-07-22 14:18:56 +00:00
|
|
|
return val;
|
|
|
|
}
|
|
|
|
|
2011-02-21 15:43:01 +00:00
|
|
|
unsigned int avio_rl24(AVIOContext *s)
|
2006-02-09 22:52:23 +00:00
|
|
|
{
|
|
|
|
unsigned int val;
|
2011-02-21 15:43:01 +00:00
|
|
|
val = avio_rl16(s);
|
|
|
|
val |= avio_r8(s) << 16;
|
2006-02-09 22:52:23 +00:00
|
|
|
return val;
|
|
|
|
}
|
|
|
|
|
2011-02-21 15:43:01 +00:00
|
|
|
unsigned int avio_rl32(AVIOContext *s)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
|
|
|
unsigned int val;
|
2011-02-21 15:43:01 +00:00
|
|
|
val = avio_rl16(s);
|
|
|
|
val |= avio_rl16(s) << 16;
|
2001-07-22 14:18:56 +00:00
|
|
|
return val;
|
|
|
|
}
|
|
|
|
|
2011-02-21 15:43:01 +00:00
|
|
|
uint64_t avio_rl64(AVIOContext *s)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
2003-02-11 16:35:48 +00:00
|
|
|
uint64_t val;
|
2011-02-21 15:43:01 +00:00
|
|
|
val = (uint64_t)avio_rl32(s);
|
|
|
|
val |= (uint64_t)avio_rl32(s) << 32;
|
2001-07-22 14:18:56 +00:00
|
|
|
return val;
|
|
|
|
}
|
|
|
|
|
2011-02-21 15:43:01 +00:00
|
|
|
unsigned int avio_rb16(AVIOContext *s)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
|
|
|
unsigned int val;
|
2011-02-21 15:43:01 +00:00
|
|
|
val = avio_r8(s) << 8;
|
|
|
|
val |= avio_r8(s);
|
2001-07-22 14:18:56 +00:00
|
|
|
return val;
|
|
|
|
}
|
|
|
|
|
2011-02-21 15:43:01 +00:00
|
|
|
unsigned int avio_rb24(AVIOContext *s)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
|
|
|
unsigned int val;
|
2011-02-21 15:43:01 +00:00
|
|
|
val = avio_rb16(s) << 8;
|
|
|
|
val |= avio_r8(s);
|
2001-07-22 14:18:56 +00:00
|
|
|
return val;
|
|
|
|
}
|
2011-02-21 15:43:01 +00:00
|
|
|
unsigned int avio_rb32(AVIOContext *s)
|
2005-07-19 14:41:08 +00:00
|
|
|
{
|
|
|
|
unsigned int val;
|
2011-02-21 15:43:01 +00:00
|
|
|
val = avio_rb16(s) << 16;
|
|
|
|
val |= avio_rb16(s);
|
2005-07-19 14:41:08 +00:00
|
|
|
return val;
|
|
|
|
}
|
2001-07-22 14:18:56 +00:00
|
|
|
|
2011-02-20 10:04:12 +00:00
|
|
|
int ff_get_line(AVIOContext *s, char *buf, int maxlen)
|
2010-07-21 21:39:01 +00:00
|
|
|
{
|
|
|
|
int i = 0;
|
|
|
|
char c;
|
|
|
|
|
|
|
|
do {
|
2011-02-21 15:43:01 +00:00
|
|
|
c = avio_r8(s);
|
2010-07-21 21:40:10 +00:00
|
|
|
if (c && i < maxlen-1)
|
2010-07-21 21:39:01 +00:00
|
|
|
buf[i++] = c;
|
|
|
|
} while (c != '\n' && c);
|
|
|
|
|
|
|
|
buf[i] = 0;
|
2010-07-21 21:40:10 +00:00
|
|
|
return i;
|
2010-07-21 21:39:01 +00:00
|
|
|
}
|
|
|
|
|
2011-03-03 12:51:55 +00:00
|
|
|
int avio_get_str(AVIOContext *s, int maxlen, char *buf, int buflen)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
2011-10-15 01:27:59 +00:00
|
|
|
if (buflen <= 0)
|
|
|
|
return AVERROR(EINVAL);
|
2011-03-03 12:51:55 +00:00
|
|
|
// reserve 1 byte for terminating 0
|
|
|
|
buflen = FFMIN(buflen - 1, maxlen);
|
|
|
|
for (i = 0; i < buflen; i++)
|
|
|
|
if (!(buf[i] = avio_r8(s)))
|
|
|
|
return i + 1;
|
2011-10-15 01:27:59 +00:00
|
|
|
buf[i] = 0;
|
2011-03-03 12:51:55 +00:00
|
|
|
for (; i < maxlen; i++)
|
|
|
|
if (!avio_r8(s))
|
|
|
|
return i + 1;
|
|
|
|
return maxlen;
|
|
|
|
}
|
|
|
|
|
2011-01-23 11:38:27 +00:00
|
|
|
#define GET_STR16(type, read) \
|
2011-02-20 10:04:12 +00:00
|
|
|
int avio_get_str16 ##type(AVIOContext *pb, int maxlen, char *buf, int buflen)\
|
2011-01-23 11:38:27 +00:00
|
|
|
{\
|
|
|
|
char* q = buf;\
|
|
|
|
int ret = 0;\
|
2011-10-15 01:27:59 +00:00
|
|
|
if (buflen <= 0) \
|
|
|
|
return AVERROR(EINVAL); \
|
2011-01-23 11:38:27 +00:00
|
|
|
while (ret + 1 < maxlen) {\
|
|
|
|
uint8_t tmp;\
|
|
|
|
uint32_t ch;\
|
|
|
|
GET_UTF16(ch, (ret += 2) <= maxlen ? read(pb) : 0, break;)\
|
|
|
|
if (!ch)\
|
|
|
|
break;\
|
|
|
|
PUT_UTF8(ch, tmp, if (q - buf < buflen - 1) *q++ = tmp;)\
|
|
|
|
}\
|
|
|
|
*q = 0;\
|
|
|
|
return ret;\
|
|
|
|
}\
|
|
|
|
|
2011-02-21 15:43:01 +00:00
|
|
|
GET_STR16(le, avio_rl16)
|
|
|
|
GET_STR16(be, avio_rb16)
|
2011-01-23 11:38:27 +00:00
|
|
|
|
|
|
|
#undef GET_STR16
|
|
|
|
|
2011-02-21 15:43:01 +00:00
|
|
|
uint64_t avio_rb64(AVIOContext *s)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
2003-02-11 16:35:48 +00:00
|
|
|
uint64_t val;
|
2011-02-21 15:43:01 +00:00
|
|
|
val = (uint64_t)avio_rb32(s) << 32;
|
|
|
|
val |= (uint64_t)avio_rb32(s);
|
2001-07-22 14:18:56 +00:00
|
|
|
return val;
|
|
|
|
}
|
|
|
|
|
2011-03-14 19:38:57 +00:00
|
|
|
uint64_t ffio_read_varlen(AVIOContext *bc){
|
2007-11-03 18:26:42 +00:00
|
|
|
uint64_t val = 0;
|
|
|
|
int tmp;
|
|
|
|
|
|
|
|
do{
|
2011-02-21 15:43:01 +00:00
|
|
|
tmp = avio_r8(bc);
|
2007-11-03 18:26:42 +00:00
|
|
|
val= (val<<7) + (tmp&127);
|
|
|
|
}while(tmp&128);
|
|
|
|
return val;
|
|
|
|
}
|
|
|
|
|
2016-02-19 13:29:10 +00:00
|
|
|
static int io_read_packet(void *opaque, uint8_t *buf, int buf_size)
|
|
|
|
{
|
|
|
|
AVIOInternal *internal = opaque;
|
|
|
|
return ffurl_read(internal->h, buf, buf_size);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int io_write_packet(void *opaque, uint8_t *buf, int buf_size)
|
|
|
|
{
|
|
|
|
AVIOInternal *internal = opaque;
|
|
|
|
return ffurl_write(internal->h, buf, buf_size);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int64_t io_seek(void *opaque, int64_t offset, int whence)
|
|
|
|
{
|
|
|
|
AVIOInternal *internal = opaque;
|
|
|
|
return ffurl_seek(internal->h, offset, whence);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int io_read_pause(void *opaque, int pause)
|
|
|
|
{
|
|
|
|
AVIOInternal *internal = opaque;
|
|
|
|
if (!internal->h->prot->url_read_pause)
|
|
|
|
return AVERROR(ENOSYS);
|
|
|
|
return internal->h->prot->url_read_pause(internal->h, pause);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int64_t io_read_seek(void *opaque, int stream_index, int64_t timestamp, int flags)
|
|
|
|
{
|
|
|
|
AVIOInternal *internal = opaque;
|
|
|
|
if (!internal->h->prot->url_read_seek)
|
|
|
|
return AVERROR(ENOSYS);
|
|
|
|
return internal->h->prot->url_read_seek(internal->h, stream_index, timestamp, flags);
|
|
|
|
}
|
|
|
|
|
2011-03-17 07:44:44 +00:00
|
|
|
int ffio_fdopen(AVIOContext **s, URLContext *h)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
2016-02-19 13:29:10 +00:00
|
|
|
AVIOInternal *internal = NULL;
|
|
|
|
uint8_t *buffer = NULL;
|
2002-07-24 17:51:50 +00:00
|
|
|
int buffer_size, max_packet_size;
|
2001-07-22 14:18:56 +00:00
|
|
|
|
2011-03-31 15:58:04 +00:00
|
|
|
max_packet_size = h->max_packet_size;
|
2002-07-24 17:51:50 +00:00
|
|
|
if (max_packet_size) {
|
|
|
|
buffer_size = max_packet_size; /* no need to bufferize more than one packet */
|
|
|
|
} else {
|
|
|
|
buffer_size = IO_BUFFER_SIZE;
|
|
|
|
}
|
2002-05-18 23:11:09 +00:00
|
|
|
buffer = av_malloc(buffer_size);
|
2001-07-22 14:18:56 +00:00
|
|
|
if (!buffer)
|
2007-02-13 18:26:14 +00:00
|
|
|
return AVERROR(ENOMEM);
|
2001-07-22 14:18:56 +00:00
|
|
|
|
2016-02-19 13:29:10 +00:00
|
|
|
internal = av_mallocz(sizeof(*internal));
|
|
|
|
if (!internal)
|
|
|
|
goto fail;
|
|
|
|
|
2016-01-20 10:11:38 +00:00
|
|
|
internal->class = &io_priv_class;
|
2016-02-19 13:29:10 +00:00
|
|
|
internal->h = h;
|
|
|
|
|
2016-01-20 10:11:38 +00:00
|
|
|
av_opt_set_defaults(internal);
|
|
|
|
|
2016-02-19 13:29:10 +00:00
|
|
|
*s = avio_alloc_context(buffer, buffer_size, h->flags & AVIO_FLAG_WRITE,
|
|
|
|
internal, io_read_packet, io_write_packet, io_seek);
|
|
|
|
if (!*s)
|
|
|
|
goto fail;
|
|
|
|
|
2011-03-05 20:06:46 +00:00
|
|
|
(*s)->seekable = h->is_streamed ? 0 : AVIO_SEEKABLE_NORMAL;
|
2007-11-21 07:41:00 +00:00
|
|
|
(*s)->max_packet_size = max_packet_size;
|
2007-11-28 19:46:49 +00:00
|
|
|
if(h->prot) {
|
2016-02-19 13:29:10 +00:00
|
|
|
(*s)->read_pause = io_read_pause;
|
|
|
|
(*s)->read_seek = io_read_seek;
|
2016-09-27 13:44:54 +00:00
|
|
|
|
|
|
|
if (h->prot->url_read_seek)
|
|
|
|
(*s)->seekable |= AVIO_SEEKABLE_TIME;
|
2007-11-28 19:46:49 +00:00
|
|
|
}
|
2015-02-27 23:06:28 +00:00
|
|
|
(*s)->av_class = &ff_avio_class;
|
2001-07-22 14:18:56 +00:00
|
|
|
return 0;
|
2016-02-19 13:29:10 +00:00
|
|
|
fail:
|
2016-01-20 10:11:38 +00:00
|
|
|
if (internal)
|
|
|
|
av_opt_free(internal);
|
2016-02-19 13:29:10 +00:00
|
|
|
av_freep(&internal);
|
|
|
|
av_freep(&buffer);
|
|
|
|
return AVERROR(ENOMEM);
|
2001-07-22 14:18:56 +00:00
|
|
|
}
|
|
|
|
|
2011-03-14 19:38:58 +00:00
|
|
|
int ffio_set_buf_size(AVIOContext *s, int buf_size)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
2003-02-11 16:35:48 +00:00
|
|
|
uint8_t *buffer;
|
2002-05-18 23:11:09 +00:00
|
|
|
buffer = av_malloc(buf_size);
|
2001-07-22 14:18:56 +00:00
|
|
|
if (!buffer)
|
2007-02-13 18:26:14 +00:00
|
|
|
return AVERROR(ENOMEM);
|
2001-07-22 14:18:56 +00:00
|
|
|
|
2002-05-18 23:11:09 +00:00
|
|
|
av_free(s->buffer);
|
2001-07-22 14:18:56 +00:00
|
|
|
s->buffer = buffer;
|
|
|
|
s->buffer_size = buf_size;
|
|
|
|
s->buf_ptr = buffer;
|
2011-04-15 14:42:09 +00:00
|
|
|
url_resetbuf(s, s->write_flag ? AVIO_FLAG_WRITE : AVIO_FLAG_READ);
|
2007-10-11 14:57:47 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-02-20 10:04:12 +00:00
|
|
|
static int url_resetbuf(AVIOContext *s, int flags)
|
2007-10-11 14:57:47 +00:00
|
|
|
{
|
2011-04-15 14:42:09 +00:00
|
|
|
assert(flags == AVIO_FLAG_WRITE || flags == AVIO_FLAG_READ);
|
2007-10-11 14:57:47 +00:00
|
|
|
|
2011-04-15 14:42:09 +00:00
|
|
|
if (flags & AVIO_FLAG_WRITE) {
|
2007-10-11 14:57:47 +00:00
|
|
|
s->buf_end = s->buffer + s->buffer_size;
|
|
|
|
s->write_flag = 1;
|
|
|
|
} else {
|
|
|
|
s->buf_end = s->buffer;
|
|
|
|
s->write_flag = 0;
|
|
|
|
}
|
2001-07-22 14:18:56 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-03-06 19:08:30 +00:00
|
|
|
int ffio_rewind_with_probe_data(AVIOContext *s, unsigned char *buf, int buf_size)
|
2010-04-08 09:02:27 +00:00
|
|
|
{
|
|
|
|
int64_t buffer_start;
|
|
|
|
int buffer_size;
|
2010-07-24 09:04:44 +00:00
|
|
|
int overlap, new_size, alloc_size;
|
2010-04-08 09:02:27 +00:00
|
|
|
|
|
|
|
if (s->write_flag)
|
|
|
|
return AVERROR(EINVAL);
|
|
|
|
|
|
|
|
buffer_size = s->buf_end - s->buffer;
|
|
|
|
|
|
|
|
/* the buffers must touch or overlap */
|
|
|
|
if ((buffer_start = s->pos - buffer_size) > buf_size)
|
|
|
|
return AVERROR(EINVAL);
|
|
|
|
|
|
|
|
overlap = buf_size - buffer_start;
|
|
|
|
new_size = buf_size + buffer_size - overlap;
|
|
|
|
|
2010-07-24 09:04:44 +00:00
|
|
|
alloc_size = FFMAX(s->buffer_size, new_size);
|
|
|
|
if (alloc_size > buf_size)
|
|
|
|
if (!(buf = av_realloc(buf, alloc_size)))
|
2010-04-08 09:02:27 +00:00
|
|
|
return AVERROR(ENOMEM);
|
|
|
|
|
2010-07-24 09:04:44 +00:00
|
|
|
if (new_size > buf_size) {
|
2010-04-08 09:02:27 +00:00
|
|
|
memcpy(buf + buf_size, s->buffer + overlap, buffer_size - overlap);
|
|
|
|
buf_size = new_size;
|
|
|
|
}
|
|
|
|
|
|
|
|
av_free(s->buffer);
|
|
|
|
s->buf_ptr = s->buffer = buf;
|
2010-07-24 09:04:44 +00:00
|
|
|
s->buffer_size = alloc_size;
|
|
|
|
s->pos = buf_size;
|
2010-04-08 09:02:27 +00:00
|
|
|
s->buf_end = s->buf_ptr + buf_size;
|
|
|
|
s->eof_reached = 0;
|
|
|
|
s->must_flush = 0;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-02-21 21:45:20 +00:00
|
|
|
int avio_open(AVIOContext **s, const char *filename, int flags)
|
2011-11-06 21:03:45 +00:00
|
|
|
{
|
|
|
|
return avio_open2(s, filename, flags, NULL, NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
int avio_open2(AVIOContext **s, const char *filename, int flags,
|
|
|
|
const AVIOInterruptCB *int_cb, AVDictionary **options)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
2016-02-19 17:02:45 +00:00
|
|
|
AVIOInternal *internal;
|
|
|
|
const URLProtocol **protocols;
|
2016-01-20 10:11:38 +00:00
|
|
|
char *proto_whitelist = NULL, *proto_blacklist = NULL;
|
|
|
|
AVDictionaryEntry *e;
|
2001-07-22 14:18:56 +00:00
|
|
|
URLContext *h;
|
|
|
|
int err;
|
|
|
|
|
2016-01-20 10:11:38 +00:00
|
|
|
if (options) {
|
|
|
|
e = av_dict_get(*options, "protocol_whitelist", NULL, 0);
|
|
|
|
if (e)
|
|
|
|
proto_whitelist = e->value;
|
|
|
|
e = av_dict_get(*options, "protocol_blacklist", NULL, 0);
|
|
|
|
if (e)
|
|
|
|
proto_blacklist = e->value;
|
|
|
|
}
|
|
|
|
|
|
|
|
protocols = ffurl_get_protocols(proto_whitelist, proto_blacklist);
|
2016-02-19 17:02:45 +00:00
|
|
|
if (!protocols)
|
|
|
|
return AVERROR(ENOMEM);
|
|
|
|
|
2015-02-28 00:00:50 +00:00
|
|
|
err = ffurl_open(&h, filename, flags, int_cb, options, protocols, NULL);
|
2016-02-19 17:02:45 +00:00
|
|
|
if (err < 0) {
|
|
|
|
av_freep(&protocols);
|
2001-07-22 14:18:56 +00:00
|
|
|
return err;
|
2016-02-19 17:02:45 +00:00
|
|
|
}
|
|
|
|
|
2011-03-17 07:44:44 +00:00
|
|
|
err = ffio_fdopen(s, h);
|
2001-07-22 14:18:56 +00:00
|
|
|
if (err < 0) {
|
2011-03-31 15:36:06 +00:00
|
|
|
ffurl_close(h);
|
2016-02-19 17:02:45 +00:00
|
|
|
av_freep(&protocols);
|
2001-07-22 14:18:56 +00:00
|
|
|
return err;
|
|
|
|
}
|
2016-02-19 17:02:45 +00:00
|
|
|
|
|
|
|
internal = (*s)->opaque;
|
|
|
|
internal->protocols = protocols;
|
|
|
|
|
2016-01-20 10:11:38 +00:00
|
|
|
if (options) {
|
|
|
|
err = av_opt_set_dict(internal, options);
|
|
|
|
if (err < 0) {
|
|
|
|
avio_closep(s);
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2001-07-22 14:18:56 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-02-21 21:45:20 +00:00
|
|
|
int avio_close(AVIOContext *s)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
2016-02-19 13:29:10 +00:00
|
|
|
AVIOInternal *internal;
|
2012-04-27 17:53:04 +00:00
|
|
|
URLContext *h;
|
|
|
|
|
|
|
|
if (!s)
|
|
|
|
return 0;
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2012-08-15 23:25:05 +00:00
|
|
|
avio_flush(s);
|
2016-02-19 13:29:10 +00:00
|
|
|
internal = s->opaque;
|
|
|
|
h = internal->h;
|
|
|
|
|
2016-01-20 10:11:38 +00:00
|
|
|
av_opt_free(internal);
|
|
|
|
|
2016-02-19 17:02:45 +00:00
|
|
|
av_freep(&internal->protocols);
|
2016-02-19 13:29:10 +00:00
|
|
|
av_freep(&s->opaque);
|
2012-09-04 13:04:46 +00:00
|
|
|
av_freep(&s->buffer);
|
2007-11-21 07:41:00 +00:00
|
|
|
av_free(s);
|
2011-03-31 15:36:06 +00:00
|
|
|
return ffurl_close(h);
|
2001-07-22 14:18:56 +00:00
|
|
|
}
|
|
|
|
|
2012-10-09 23:39:06 +00:00
|
|
|
int avio_closep(AVIOContext **s)
|
|
|
|
{
|
|
|
|
int ret = avio_close(*s);
|
|
|
|
*s = NULL;
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2011-03-14 19:39:02 +00:00
|
|
|
int avio_printf(AVIOContext *s, const char *fmt, ...)
|
2002-07-24 17:51:50 +00:00
|
|
|
{
|
|
|
|
va_list ap;
|
|
|
|
char buf[4096];
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
va_start(ap, fmt);
|
|
|
|
ret = vsnprintf(buf, sizeof(buf), fmt, ap);
|
|
|
|
va_end(ap);
|
2011-02-21 18:28:17 +00:00
|
|
|
avio_write(s, buf, strlen(buf));
|
2002-07-24 17:51:50 +00:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2011-04-12 07:37:10 +00:00
|
|
|
int avio_pause(AVIOContext *s, int pause)
|
2007-11-28 19:46:49 +00:00
|
|
|
{
|
|
|
|
if (!s->read_pause)
|
|
|
|
return AVERROR(ENOSYS);
|
2007-12-19 20:57:13 +00:00
|
|
|
return s->read_pause(s->opaque, pause);
|
2007-11-28 19:46:49 +00:00
|
|
|
}
|
|
|
|
|
2011-04-12 07:37:10 +00:00
|
|
|
int64_t avio_seek_time(AVIOContext *s, int stream_index,
|
2011-03-14 19:38:59 +00:00
|
|
|
int64_t timestamp, int flags)
|
2007-11-28 19:46:49 +00:00
|
|
|
{
|
2008-10-03 10:16:29 +00:00
|
|
|
int64_t ret;
|
2007-11-28 19:46:49 +00:00
|
|
|
if (!s->read_seek)
|
|
|
|
return AVERROR(ENOSYS);
|
2016-02-19 13:29:10 +00:00
|
|
|
ret = s->read_seek(s->opaque, stream_index, timestamp, flags);
|
2012-12-09 03:15:45 +00:00
|
|
|
if (ret >= 0) {
|
2010-04-12 15:03:30 +00:00
|
|
|
int64_t pos;
|
2007-11-28 19:46:49 +00:00
|
|
|
s->buf_ptr = s->buf_end; // Flush buffer
|
2016-02-19 13:29:10 +00:00
|
|
|
pos = s->seek(s->opaque, 0, SEEK_CUR);
|
2010-04-12 15:03:30 +00:00
|
|
|
if (pos >= 0)
|
|
|
|
s->pos = pos;
|
|
|
|
else if (pos != AVERROR(ENOSYS))
|
|
|
|
ret = pos;
|
2007-11-28 19:46:49 +00:00
|
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2002-07-24 17:51:50 +00:00
|
|
|
/* output in a dynamic buffer */
|
|
|
|
|
|
|
|
typedef struct DynBuffer {
|
|
|
|
int pos, size, allocated_size;
|
2003-02-11 16:35:48 +00:00
|
|
|
uint8_t *buffer;
|
2002-07-24 17:51:50 +00:00
|
|
|
int io_buffer_size;
|
2003-02-11 16:35:48 +00:00
|
|
|
uint8_t io_buffer[1];
|
2002-07-24 17:51:50 +00:00
|
|
|
} DynBuffer;
|
|
|
|
|
2004-10-08 20:09:52 +00:00
|
|
|
static int dyn_buf_write(void *opaque, uint8_t *buf, int buf_size)
|
2002-07-24 17:51:50 +00:00
|
|
|
{
|
|
|
|
DynBuffer *d = opaque;
|
2008-10-04 21:11:58 +00:00
|
|
|
unsigned new_size, new_allocated_size;
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2002-07-24 17:51:50 +00:00
|
|
|
/* reallocate buffer if needed */
|
|
|
|
new_size = d->pos + buf_size;
|
|
|
|
new_allocated_size = d->allocated_size;
|
2012-12-09 03:15:45 +00:00
|
|
|
if (new_size < d->pos || new_size > INT_MAX/2)
|
2005-01-08 14:21:33 +00:00
|
|
|
return -1;
|
2002-07-24 17:51:50 +00:00
|
|
|
while (new_size > new_allocated_size) {
|
|
|
|
if (!new_allocated_size)
|
|
|
|
new_allocated_size = new_size;
|
|
|
|
else
|
2005-12-17 18:14:38 +00:00
|
|
|
new_allocated_size += new_allocated_size / 2 + 1;
|
2002-07-24 17:51:50 +00:00
|
|
|
}
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2002-07-24 17:51:50 +00:00
|
|
|
if (new_allocated_size > d->allocated_size) {
|
2013-09-18 16:12:36 +00:00
|
|
|
int err;
|
2013-09-26 13:37:02 +00:00
|
|
|
if ((err = av_reallocp(&d->buffer, new_allocated_size)) < 0) {
|
|
|
|
d->allocated_size = 0;
|
|
|
|
d->size = 0;
|
2013-09-18 16:12:36 +00:00
|
|
|
return err;
|
2013-09-26 13:37:02 +00:00
|
|
|
}
|
2002-07-24 17:51:50 +00:00
|
|
|
d->allocated_size = new_allocated_size;
|
|
|
|
}
|
|
|
|
memcpy(d->buffer + d->pos, buf, buf_size);
|
|
|
|
d->pos = new_size;
|
|
|
|
if (d->pos > d->size)
|
|
|
|
d->size = d->pos;
|
2004-10-08 20:09:52 +00:00
|
|
|
return buf_size;
|
2002-07-24 17:51:50 +00:00
|
|
|
}
|
|
|
|
|
2004-10-08 20:09:52 +00:00
|
|
|
static int dyn_packet_buf_write(void *opaque, uint8_t *buf, int buf_size)
|
2002-07-24 17:51:50 +00:00
|
|
|
{
|
|
|
|
unsigned char buf1[4];
|
2004-10-08 20:09:52 +00:00
|
|
|
int ret;
|
2002-07-24 17:51:50 +00:00
|
|
|
|
|
|
|
/* packetized write: output the header */
|
2009-01-16 15:34:37 +00:00
|
|
|
AV_WB32(buf1, buf_size);
|
2012-12-09 03:15:45 +00:00
|
|
|
ret = dyn_buf_write(opaque, buf1, 4);
|
|
|
|
if (ret < 0)
|
2004-10-08 20:09:52 +00:00
|
|
|
return ret;
|
2002-07-24 17:51:50 +00:00
|
|
|
|
|
|
|
/* then the data */
|
2004-10-08 20:09:52 +00:00
|
|
|
return dyn_buf_write(opaque, buf, buf_size);
|
2002-07-24 17:51:50 +00:00
|
|
|
}
|
|
|
|
|
2008-10-03 10:16:29 +00:00
|
|
|
static int64_t dyn_buf_seek(void *opaque, int64_t offset, int whence)
|
2002-07-24 17:51:50 +00:00
|
|
|
{
|
|
|
|
DynBuffer *d = opaque;
|
|
|
|
|
|
|
|
if (whence == SEEK_CUR)
|
|
|
|
offset += d->pos;
|
|
|
|
else if (whence == SEEK_END)
|
|
|
|
offset += d->size;
|
|
|
|
if (offset < 0 || offset > 0x7fffffffLL)
|
|
|
|
return -1;
|
|
|
|
d->pos = offset;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-02-20 10:04:12 +00:00
|
|
|
static int url_open_dyn_buf_internal(AVIOContext **s, int max_packet_size)
|
2002-07-24 17:51:50 +00:00
|
|
|
{
|
|
|
|
DynBuffer *d;
|
2009-01-16 16:39:17 +00:00
|
|
|
unsigned io_buffer_size = max_packet_size ? max_packet_size : 1024;
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2012-12-09 03:15:45 +00:00
|
|
|
if (sizeof(DynBuffer) + io_buffer_size < io_buffer_size)
|
2005-01-08 14:21:33 +00:00
|
|
|
return -1;
|
2009-01-16 15:32:33 +00:00
|
|
|
d = av_mallocz(sizeof(DynBuffer) + io_buffer_size);
|
2002-07-24 17:51:50 +00:00
|
|
|
if (!d)
|
2009-01-16 15:35:51 +00:00
|
|
|
return AVERROR(ENOMEM);
|
2011-04-03 20:55:31 +00:00
|
|
|
d->io_buffer_size = io_buffer_size;
|
|
|
|
*s = avio_alloc_context(d->io_buffer, d->io_buffer_size, 1, d, NULL,
|
|
|
|
max_packet_size ? dyn_packet_buf_write : dyn_buf_write,
|
|
|
|
max_packet_size ? NULL : dyn_buf_seek);
|
2007-11-21 07:41:00 +00:00
|
|
|
if(!*s) {
|
|
|
|
av_free(d);
|
|
|
|
return AVERROR(ENOMEM);
|
|
|
|
}
|
2011-04-03 20:55:31 +00:00
|
|
|
(*s)->max_packet_size = max_packet_size;
|
|
|
|
return 0;
|
2002-07-24 17:51:50 +00:00
|
|
|
}
|
|
|
|
|
2011-03-17 07:13:34 +00:00
|
|
|
int avio_open_dyn_buf(AVIOContext **s)
|
2002-07-24 17:51:50 +00:00
|
|
|
{
|
|
|
|
return url_open_dyn_buf_internal(s, 0);
|
|
|
|
}
|
|
|
|
|
2011-03-17 07:19:54 +00:00
|
|
|
int ffio_open_dyn_packet_buf(AVIOContext **s, int max_packet_size)
|
2002-07-24 17:51:50 +00:00
|
|
|
{
|
|
|
|
if (max_packet_size <= 0)
|
|
|
|
return -1;
|
|
|
|
return url_open_dyn_buf_internal(s, max_packet_size);
|
|
|
|
}
|
|
|
|
|
2011-03-17 07:16:07 +00:00
|
|
|
int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
|
2002-07-24 17:51:50 +00:00
|
|
|
{
|
2014-10-18 00:12:13 +00:00
|
|
|
DynBuffer *d;
|
2002-07-24 17:51:50 +00:00
|
|
|
int size;
|
2015-06-29 21:48:34 +00:00
|
|
|
static const char padbuf[AV_INPUT_BUFFER_PADDING_SIZE] = {0};
|
2010-07-01 20:15:49 +00:00
|
|
|
int padding = 0;
|
|
|
|
|
2013-10-30 17:09:30 +00:00
|
|
|
if (!s) {
|
|
|
|
*pbuffer = NULL;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2010-07-01 20:15:49 +00:00
|
|
|
/* don't attempt to pad fixed-size packet buffers */
|
|
|
|
if (!s->max_packet_size) {
|
2011-02-21 18:28:17 +00:00
|
|
|
avio_write(s, padbuf, sizeof(padbuf));
|
2015-06-29 21:48:34 +00:00
|
|
|
padding = AV_INPUT_BUFFER_PADDING_SIZE;
|
2010-07-01 20:15:49 +00:00
|
|
|
}
|
2002-07-24 17:51:50 +00:00
|
|
|
|
2011-03-14 19:39:06 +00:00
|
|
|
avio_flush(s);
|
2002-07-24 17:51:50 +00:00
|
|
|
|
2014-10-18 00:12:13 +00:00
|
|
|
d = s->opaque;
|
2002-07-24 17:51:50 +00:00
|
|
|
*pbuffer = d->buffer;
|
|
|
|
size = d->size;
|
|
|
|
av_free(d);
|
2007-11-21 07:41:00 +00:00
|
|
|
av_free(s);
|
2010-07-01 20:15:49 +00:00
|
|
|
return size - padding;
|
2002-07-24 17:51:50 +00:00
|
|
|
}
|
2013-09-18 18:50:50 +00:00
|
|
|
|
2015-02-24 11:23:30 +00:00
|
|
|
void ffio_free_dyn_buf(AVIOContext **s)
|
|
|
|
{
|
|
|
|
uint8_t *tmp;
|
|
|
|
if (!*s)
|
|
|
|
return;
|
|
|
|
avio_close_dyn_buf(*s, &tmp);
|
|
|
|
av_free(tmp);
|
|
|
|
*s = NULL;
|
|
|
|
}
|
|
|
|
|
2013-09-18 18:50:50 +00:00
|
|
|
static int null_buf_write(void *opaque, uint8_t *buf, int buf_size)
|
|
|
|
{
|
|
|
|
DynBuffer *d = opaque;
|
|
|
|
|
|
|
|
d->pos += buf_size;
|
|
|
|
if (d->pos > d->size)
|
|
|
|
d->size = d->pos;
|
|
|
|
return buf_size;
|
|
|
|
}
|
|
|
|
|
|
|
|
int ffio_open_null_buf(AVIOContext **s)
|
|
|
|
{
|
|
|
|
int ret = url_open_dyn_buf_internal(s, 0);
|
|
|
|
if (ret >= 0) {
|
|
|
|
AVIOContext *pb = *s;
|
|
|
|
pb->write_packet = null_buf_write;
|
|
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
int ffio_close_null_buf(AVIOContext *s)
|
|
|
|
{
|
|
|
|
DynBuffer *d = s->opaque;
|
|
|
|
int size;
|
|
|
|
|
|
|
|
avio_flush(s);
|
|
|
|
|
|
|
|
size = d->size;
|
|
|
|
av_free(d);
|
|
|
|
av_free(s);
|
|
|
|
return size;
|
|
|
|
}
|