Commit 639728f5 authored by Andreas Rheinhardt's avatar Andreas Rheinhardt

avformat/aviobuf: Add function to reset dynamic buffer

Resetting a dynamic buffer means to keep the AVIOContext and the
internal buffer used by the dynamic buffer. This is done in order to
save (re)allocations when one has a workflow where one opens and closes
dynamic buffers in sequence.
Signed-off-by: 's avatarAndreas Rheinhardt <andreas.rheinhardt@gmail.com>
parent 5cdd2ebb
...@@ -171,6 +171,13 @@ int ffio_open_whitelist(AVIOContext **s, const char *url, int flags, ...@@ -171,6 +171,13 @@ int ffio_open_whitelist(AVIOContext **s, const char *url, int flags,
*/ */
int ffio_close_null_buf(AVIOContext *s); int ffio_close_null_buf(AVIOContext *s);
/**
* Reset a dynamic buffer.
*
* Resets everything, but keeps the allocated buffer for later use.
*/
void ffio_reset_dyn_buf(AVIOContext *s);
/** /**
* Free a dynamic buffer. * Free a dynamic buffer.
* *
......
...@@ -1407,6 +1407,17 @@ int avio_get_dyn_buf(AVIOContext *s, uint8_t **pbuffer) ...@@ -1407,6 +1407,17 @@ int avio_get_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
return d->size; return d->size;
} }
void ffio_reset_dyn_buf(AVIOContext *s)
{
DynBuffer *d = s->opaque;
int max_packet_size = s->max_packet_size;
ffio_init_context(s, d->io_buffer, d->io_buffer_size, 1, d, NULL,
s->write_packet, s->seek);
s->max_packet_size = max_packet_size;
d->pos = d->size = 0;
}
int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer) int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
{ {
DynBuffer *d; DynBuffer *d;
......
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