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avformat/utils: Move ffio_limit() to aviobuf 

It is the more natural place for it given that it only deals with I/O;
in fact, the function already has the ffio prefix and its declaration
already is in avio_internal.h.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2021-08-05 01:45:21 +02:00
parent e75ab15fd4
commit 19093100fd
2 changed files with 25 additions and 25 deletions
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25
libavformat/aviobuf.c
View File

@ -1015,6 +1015,31 @@ int ffio_ensure_seekback(AVIOContext *s, int64_t buf_size)
return 0;
}
int ffio_limit(AVIOContext *s, int size)
{
if (s->maxsize>= 0) {
int64_t pos = avio_tell(s);
int64_t remaining = s->maxsize - pos;
if (remaining < size) {
int64_t newsize = avio_size(s);
if (!s->maxsize || s->maxsize<newsize)
s->maxsize = newsize - !newsize;
if (pos > s->maxsize && s->maxsize >= 0)
s->maxsize = AVERROR(EIO);
if (s->maxsize >= 0)
remaining = s->maxsize - pos;
}
if (s->maxsize >= 0 && remaining < size && size > 1) {
av_log(NULL, remaining ? AV_LOG_ERROR : AV_LOG_DEBUG,
"Truncating packet of size %d to %"PRId64"\n",
size, remaining + !remaining);
size = remaining + !remaining;
}
}
return size;
}
int ffio_set_buf_size(AVIOContext *s, int buf_size)
{
uint8_t *buffer;

25
libavformat/utils.c
View File

@ -213,31 +213,6 @@ static const AVCodec *find_probe_decoder(AVFormatContext *s, const AVStream *st,
/* an arbitrarily chosen "sane" max packet size -- 50M */
#define SANE_CHUNK_SIZE (50000000)
int ffio_limit(AVIOContext *s, int size)
{
if (s->maxsize>= 0) {
int64_t pos = avio_tell(s);
int64_t remaining= s->maxsize - pos;
if (remaining < size) {
int64_t newsize = avio_size(s);
if (!s->maxsize || s->maxsize<newsize)
s->maxsize = newsize - !newsize;
if (pos > s->maxsize && s->maxsize >= 0)
s->maxsize = AVERROR(EIO);
if (s->maxsize >= 0)
remaining = s->maxsize - pos;
}
if (s->maxsize >= 0 && remaining < size && size > 1) {
av_log(NULL, remaining ? AV_LOG_ERROR : AV_LOG_DEBUG,
"Truncating packet of size %d to %"PRId64"\n",
size, remaining + !remaining);
size = remaining + !remaining;
}
}
return size;
}
/* Read the data in sane-sized chunks and append to pkt.
* Return the number of bytes read or an error. */
static int append_packet_chunked(AVIOContext *s, AVPacket *pkt, int size)