mirror of
https://github.com/nyanmisaka/ffmpeg-rockchip.git
synced 2025-10-31 20:42:49 +08:00
f8bc86d47e
also change its prefix to ffio
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit f1ef2cd9ed)
65 lines
2.3 KiB
C
65 lines
2.3 KiB
C
/*
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg 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.
|
|
*
|
|
* FFmpeg 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 FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVFORMAT_AVIO_INTERNAL_H
|
|
#define AVFORMAT_AVIO_INTERNAL_H
|
|
|
|
#include "avio.h"
|
|
|
|
int ffio_init_context(AVIOContext *s,
|
|
unsigned char *buffer,
|
|
int buffer_size,
|
|
int write_flag,
|
|
void *opaque,
|
|
int (*read_packet)(void *opaque, uint8_t *buf, int buf_size),
|
|
int (*write_packet)(void *opaque, uint8_t *buf, int buf_size),
|
|
int64_t (*seek)(void *opaque, int64_t offset, int whence));
|
|
|
|
|
|
/**
|
|
* Read size bytes from AVIOContext into buf.
|
|
* This reads at most 1 packet. If that is not enough fewer bytes will be
|
|
* returned.
|
|
* @return number of bytes read or AVERROR
|
|
*/
|
|
int ffio_read_partial(AVIOContext *s, unsigned char *buf, int size);
|
|
|
|
void ffio_fill(AVIOContext *s, int b, int count);
|
|
|
|
static av_always_inline void ffio_wfourcc(AVIOContext *pb, const uint8_t *s)
|
|
{
|
|
avio_wl32(pb, MKTAG(s[0], s[1], s[2], s[3]));
|
|
}
|
|
|
|
/**
|
|
* Rewind the AVIOContext using the specified buffer containing the first buf_size bytes of the file.
|
|
* Used after probing to avoid seeking.
|
|
* Joins buf and s->buffer, taking any overlap into consideration.
|
|
* @note s->buffer must overlap with buf or they can't be joined and the function fails
|
|
*
|
|
* @param s The read-only AVIOContext to rewind
|
|
* @param buf The probe buffer containing the first buf_size bytes of the file
|
|
* @param buf_size The size of buf
|
|
* @return 0 in case of success, a negative value corresponding to an
|
|
* AVERROR code in case of failure
|
|
*/
|
|
int ffio_rewind_with_probe_data(AVIOContext *s, unsigned char *buf, int buf_size);
|
|
|
|
#endif // AVFORMAT_AVIO_INTERNAL_H
|