diff options
Diffstat (limited to 'meta-pipewire/recipes-multimedia/pipewire/pipewire/0009-alsa-adjust-delay-depending-on-hardware.patch')
| -rw-r--r-- | meta-pipewire/recipes-multimedia/pipewire/pipewire/0009-alsa-adjust-delay-depending-on-hardware.patch | 64 |
1 files changed, 0 insertions, 64 deletions
diff --git a/meta-pipewire/recipes-multimedia/pipewire/pipewire/0009-alsa-adjust-delay-depending-on-hardware.patch b/meta-pipewire/recipes-multimedia/pipewire/pipewire/0009-alsa-adjust-delay-depending-on-hardware.patch deleted file mode 100644 index a448063f1..000000000 --- a/meta-pipewire/recipes-multimedia/pipewire/pipewire/0009-alsa-adjust-delay-depending-on-hardware.patch +++ /dev/null @@ -1,64 +0,0 @@ -From 38cdfa4483de4c2e91bfccb9c22ec72d9c3720f4 Mon Sep 17 00:00:00 2001 -From: Walter Lozano <walter.lozano@collabora.com> -Date: Sat, 22 Aug 2020 11:51:30 -0300 -Subject: [PATCH 9/9] alsa: adjust delay depending on hardware - -Currently PipeWire is able to reproduce audio in systems where -DMA granularity is not burst but it could face an xrun. - -In order to mitigate this issue, adjust the delay PipeWire -calculates to make sure that a period is available in the buffer -when snd_pcm_hw_params_is_batch == 1. - -Signed-off-by: Walter Lozano <walter.lozano@collabora.com> ---- - spa/plugins/alsa/alsa-pcm.c | 12 +++++++++++- - spa/plugins/alsa/alsa-pcm.h | 1 + - 2 files changed, 12 insertions(+), 1 deletion(-) - -diff --git a/spa/plugins/alsa/alsa-pcm.c b/spa/plugins/alsa/alsa-pcm.c -index 92ef2151..1f15085f 100644 ---- a/spa/plugins/alsa/alsa-pcm.c -+++ b/spa/plugins/alsa/alsa-pcm.c -@@ -462,8 +462,9 @@ int spa_alsa_set_format(struct state *state, struct spa_audio_info *fmt, uint32_ - state->frame_size = info->channels * (snd_pcm_format_physical_width(format) / 8); - - dir = 0; -+ state->pcm_is_batch = snd_pcm_hw_params_is_batch(params); - period_size = 1024; -- if (snd_pcm_hw_params_is_batch(params)) { -+ if (state->pcm_is_batch) { - period_size = 512; - spa_log_warn(state->log, NAME" hardware does double buffering, changing period_size to %ld", period_size); - } -@@ -639,6 +640,15 @@ static int get_status(struct state *state, snd_pcm_uframes_t *delay, snd_pcm_ufr - - if (state->stream == SND_PCM_STREAM_PLAYBACK) { - *delay = state->buffer_frames - avail; -+ if (state->pcm_is_batch) { -+ /* In this case, as we don't have a good granularity in the -+ * avail report try to compensate this by tweaking the delay -+ * and make sure that a period is available in the buffer */ -+ if (*delay > state->period_frames) -+ *delay = *delay - state->period_frames; -+ else -+ *delay = 0; -+ } - } - else { - *delay = avail; -diff --git a/spa/plugins/alsa/alsa-pcm.h b/spa/plugins/alsa/alsa-pcm.h -index b7a2dd29..3b5c0d7b 100644 ---- a/spa/plugins/alsa/alsa-pcm.h -+++ b/spa/plugins/alsa/alsa-pcm.h -@@ -100,6 +100,7 @@ struct state { - - bool have_format; - struct spa_audio_info current_format; -+ bool pcm_is_batch; - - snd_pcm_uframes_t buffer_frames; - snd_pcm_uframes_t period_frames; --- -2.20.1 - |