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-rw-r--r--src/input/plugins/MmsInputPlugin.cxx7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/input/plugins/MmsInputPlugin.cxx b/src/input/plugins/MmsInputPlugin.cxx
index 1aed9c662..df291bc84 100644
--- a/src/input/plugins/MmsInputPlugin.cxx
+++ b/src/input/plugins/MmsInputPlugin.cxx
@@ -92,6 +92,13 @@ input_mms_open(const char *url,
size_t
MmsInputStream::ThreadRead(void *ptr, size_t read_size, Error &error)
{
+ /* unfortunately, mmsx_read() blocks until the whole buffer
+ has been filled; to avoid big latencies, limit the size of
+ each chunk we read to a reasonable size */
+ constexpr size_t MAX_CHUNK = 16384;
+ if (read_size > MAX_CHUNK)
+ read_size = MAX_CHUNK;
+
int nbytes = mmsx_read(nullptr, mms, (char *)ptr, read_size);
if (nbytes <= 0) {
if (nbytes < 0)