diff options
-rw-r--r-- | libavformat/aviobuf.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/libavformat/aviobuf.c b/libavformat/aviobuf.c index 93efd65d0b..9650ecfc9d 100644 --- a/libavformat/aviobuf.c +++ b/libavformat/aviobuf.c @@ -27,6 +27,13 @@ #define IO_BUFFER_SIZE 32768 +/** + * Do seeks within this distance ahead of the current buffer by skipping + * data instead of calling the protocol seek function, for seekable + * protocols. + */ +#define SHORT_SEEK_THRESHOLD 4096 + static void fill_buffer(ByteIOContext *s); int init_put_byte(ByteIOContext *s, @@ -151,8 +158,10 @@ int64_t url_fseek(ByteIOContext *s, int64_t offset, int whence) offset1 >= 0 && offset1 < (s->buf_end - s->buffer)) { /* can do the seek inside the buffer */ s->buf_ptr = s->buffer + offset1; - } else if(s->is_streamed && !s->write_flag && - offset1 >= 0 && offset1 < (s->buf_end - s->buffer) + (1<<16)){ + } else if ((s->is_streamed || + offset1 <= s->buf_end + SHORT_SEEK_THRESHOLD - s->buffer) && + !s->write_flag && offset1 >= 0 && + (whence != SEEK_END || force)) { while(s->pos < offset && !s->eof_reached) fill_buffer(s); if (s->eof_reached) |