bluetooth: produce silence on mSBC decoding error

We are supposed to conceal packet loss. This is not trivial but we can at least
produce silence instead of breaking on mSBC decoding error.

Part-of: <https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/merge_requests/507>

diff --git a/src/modules/bluetooth/bt-codec-msbc.c b/src/modules/bluetooth/bt-codec-msbc.c
index c49a0f9..b101143 100644 (file)
--- a/src/modules/bluetooth/bt-codec-msbc.c
+++ b/src/modules/bluetooth/bt-codec-msbc.c
@@ -287,9 +287,11 @@ static size_t decode_buffer(void *codec_info, const uint8_t *input_buffer, size_
 
     if (PA_UNLIKELY(decoded <= 0)) {
         pa_log_error("mSBC decoding error (%li)", (long) decoded);
-        *processed = 0;
-        return 0;
+        pa_silence_memory(output_buffer, sbc_info->codesize, &sbc_info->sample_spec);
+        decoded = sbc_info->frame_length;
+        written = sbc_info->codesize;
     }
+
     pa_assert_fp((size_t)decoded == sbc_info->frame_length);
     pa_assert_fp((size_t)written == sbc_info->codesize);