pcm: plug plugin - fast_ops may be changed when sw_params are set

Link: https://github.com/alsa-project/alsa-lib/issues/372
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

diff --git a/src/pcm/pcm_plug.c b/src/pcm/pcm_plug.c
index abf6f1ab975119735c89a485fb92668766cb525c..e5a3a18920c4b7527a9409c989375546de6217ec 100644 (file)
--- a/src/pcm/pcm_plug.c
+++ b/src/pcm/pcm_plug.c
@@ -1065,6 +1065,18 @@ static int snd_pcm_plug_hw_free(snd_pcm_t *pcm)
        return err;
 }
 
+static int snd_pcm_plug_sw_params(snd_pcm_t *pcm, snd_pcm_sw_params_t * params)
+{
+       snd_pcm_plug_t *plug = pcm->private_data;
+       snd_pcm_t *slave = plug->gen.slave;
+       int err = snd_pcm_sw_params(slave, params);
+       if (err >= 0) {
+               pcm->fast_ops = slave->fast_ops;
+               pcm->fast_op_arg = slave->fast_op_arg;
+       }
+       return err;
+}
+
 static void snd_pcm_plug_dump(snd_pcm_t *pcm, snd_output_t *out)
 {
        snd_pcm_plug_t *plug = pcm->private_data;
@@ -1078,7 +1090,7 @@ static const snd_pcm_ops_t snd_pcm_plug_ops = {
        .hw_refine = snd_pcm_plug_hw_refine,
        .hw_params = snd_pcm_plug_hw_params,
        .hw_free = snd_pcm_plug_hw_free,
-       .sw_params = snd_pcm_generic_sw_params,
+       .sw_params = snd_pcm_plug_sw_params,
        .channel_info = snd_pcm_generic_channel_info,
        .dump = snd_pcm_plug_dump,
        .nonblock = snd_pcm_generic_nonblock,