diff --git a/meta-oe/recipes-support/libcanberra/files/0001-Determine-audio-buffer-size-for-a-time-of-500ms.patch b/meta-oe/recipes-support/libcanberra/files/0001-Determine-audio-buffer-size-for-a-time-of-500ms.patch new file mode 100644 index 00000000000..4dbd300c31f --- /dev/null +++ b/meta-oe/recipes-support/libcanberra/files/0001-Determine-audio-buffer-size-for-a-time-of-500ms.patch @@ -0,0 +1,40 @@ +From 86488a7fc209ac08dd92c9d50a77e3330e7aedd9 Mon Sep 17 00:00:00 2001 +From: Patrick Zacharias <1475802+Fighter19@users.noreply.github.com> +Date: Thu, 7 Nov 2024 14:03:29 +0100 +Subject: [PATCH] Determine audio buffer size for a time of 500ms + +On some hardware like the SGTL5000, not specifying a buffer size +results to EINVAL being returned. + +This code sets the buffer time to 500ms and the period time to a fourth of that, +or whatever is nearest to that. +--- + src/alsa.c | 15 +++++++++++++++ + 1 file changed, 15 insertions(+) + +diff --git a/src/alsa.c b/src/alsa.c +index bebcc4a..ac26578 100644 +--- a/src/alsa.c ++++ b/src/alsa.c +@@ -258,6 +258,21 @@ static int open_alsa(ca_context *c, struct outstanding *out) { + if ((ret = snd_pcm_hw_params_set_channels(out->pcm, hwparams, ca_sound_file_get_nchannels(out->file))) < 0) + goto finish; + ++ unsigned int buffer_time = 0; ++ if ((ret = snd_pcm_hw_params_get_buffer_time_max(hwparams, &buffer_time, 0)) < 0) ++ goto finish; ++ ++ // Cap the buffer time to 500ms ++ if (buffer_time > 500000) ++ buffer_time = 500000; ++ ++ unsigned int period_time = buffer_time / 4; ++ if ((ret = snd_pcm_hw_params_set_period_time_near(out->pcm, hwparams, &period_time, 0)) < 0) ++ goto finish; ++ ++ if ((ret = snd_pcm_hw_params_set_buffer_time_near(out->pcm, hwparams, &buffer_time, 0)) < 0) ++ goto finish; ++ + if ((ret = snd_pcm_hw_params(out->pcm, hwparams)) < 0) + goto finish; + diff --git a/meta-oe/recipes-support/libcanberra/libcanberra_0.30.bb b/meta-oe/recipes-support/libcanberra/libcanberra_0.30.bb index 95c94795883..6f65ed9ed13 100644 --- a/meta-oe/recipes-support/libcanberra/libcanberra_0.30.bb +++ b/meta-oe/recipes-support/libcanberra/libcanberra_0.30.bb @@ -13,6 +13,7 @@ SRC_URI = " \ file://0001-build-gtk-and-gtk3-version-for-canberra_gtk_play.patch \ file://0001-gtk-Don-t-assume-all-GdkDisplays-are-GdkX11Displays-.patch \ file://0001-remove-dropped-templates.patch \ + file://0001-Determine-audio-buffer-size-for-a-time-of-500ms.patch \ " SRC_URI[md5sum] = "34cb7e4430afaf6f447c4ebdb9b42072" SRC_URI[sha256sum] = "c2b671e67e0c288a69fc33dc1b6f1b534d07882c2aceed37004bf48c601afa72"