diff options
| -rw-r--r-- | libavformat/avio.h | 7 | ||||
| -rw-r--r-- | libavformat/aviobuf.c | 10 |
2 files changed, 13 insertions, 4 deletions
diff --git a/libavformat/avio.h b/libavformat/avio.h index defd617..4004b6f 100644 --- a/libavformat/avio.h +++ b/libavformat/avio.h @@ -146,6 +146,13 @@ typedef struct AVIOContext { * This field is internal to libavformat and access from outside is not allowed. */ int writeout_count; + + /** + * Original buffer size + * used internally after probing and ensure seekback to reset the buffer size + * This field is internal to libavformat and access from outside is not allowed. + */ + int orig_buffer_size; } AVIOContext; /* unbuffered I/O */ diff --git a/libavformat/aviobuf.c b/libavformat/aviobuf.c index 7e1bfcd..be4dd7a 100644 --- a/libavformat/aviobuf.c +++ b/libavformat/aviobuf.c @@ -78,6 +78,7 @@ int ffio_init_context(AVIOContext *s, int64_t (*seek)(void *opaque, int64_t offset, int whence)) { s->buffer = buffer; + s->orig_buffer_size = s->buffer_size = buffer_size; s->buf_ptr = buffer; s->opaque = opaque; @@ -434,14 +435,14 @@ static void fill_buffer(AVIOContext *s) } /* make buffer smaller in case it ended up large after probing */ - if (s->read_packet && s->buffer_size > max_buffer_size) { + if (s->read_packet && s->orig_buffer_size && s->buffer_size > s->orig_buffer_size) { if (dst == s->buffer) { - ffio_set_buf_size(s, max_buffer_size); + ffio_set_buf_size(s, s->orig_buffer_size); s->checksum_ptr = dst = s->buffer; } - av_assert0(len >= max_buffer_size); - len = max_buffer_size; + av_assert0(len >= s->orig_buffer_size); + len = s->orig_buffer_size; } if (s->read_packet) @@ -792,6 +793,7 @@ int ffio_set_buf_size(AVIOContext *s, int buf_size) av_free(s->buffer); s->buffer = buffer; + s->orig_buffer_size = s->buffer_size = buf_size; s->buf_ptr = buffer; url_resetbuf(s, s->write_flag ? AVIO_FLAG_WRITE : AVIO_FLAG_READ); |
