pcm: null: add rewindable and forwardable callbacks

Dirty, but consistent with avail_update.

Signed-off-by: Alexander E. Patrakov <patrakov@gmail.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

diff --git a/src/pcm/pcm_null.c b/src/pcm/pcm_null.c
index a154a5c..f1d2f91 100644 (file)
--- a/src/pcm/pcm_null.c
+++ b/src/pcm/pcm_null.c
@@ -168,6 +168,17 @@ static int snd_pcm_null_pause(snd_pcm_t *pcm, int enable)
        return 0;
 }
 
+static snd_pcm_sframes_t snd_pcm_null_rewindable(snd_pcm_t *pcm)
+{
+       return pcm->buffer_size;
+}
+
+static snd_pcm_sframes_t snd_pcm_null_forwardable(snd_pcm_t *pcm ATTRIBUTE_UNUSED)
+{
+       return 0;
+}
+
+
 static snd_pcm_sframes_t snd_pcm_null_rewind(snd_pcm_t *pcm, snd_pcm_uframes_t frames)
 {
        snd_pcm_null_t *null = pcm->private_data;
@@ -325,7 +336,9 @@ static const snd_pcm_fast_ops_t snd_pcm_null_fast_ops = {
        .drop = snd_pcm_null_drop,
        .drain = snd_pcm_null_drain,
        .pause = snd_pcm_null_pause,
+       .rewindable = snd_pcm_null_rewindable,
        .rewind = snd_pcm_null_rewind,
+       .forwardable = snd_pcm_null_forwardable,
        .forward = snd_pcm_null_forward,
        .resume = snd_pcm_null_resume,
        .writei = snd_pcm_null_writei,