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filter: add support for control ports

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This commit is contained in:
Wim Taymans 2020-03-01 20:36:55 +01:00
parent 2982b9511e
commit 5498483337
1 changed files with 16 additions and 0 deletions
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16
src/pipewire/filter.c
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@ -1310,6 +1310,19 @@ static void add_video_dsp_port_params(struct filter *impl, struct port *port)
SPA_FORMAT_VIDEO_format, SPA_POD_Id(SPA_VIDEO_FORMAT_DSP_F32)));
}
static void add_control_dsp_port_params(struct filter *impl, struct port *port)
{
uint8_t buffer[4096];
struct spa_pod_builder b;
spa_pod_builder_init(&b, buffer, sizeof(buffer));
add_param(impl, port, SPA_PARAM_EnumFormat,
spa_pod_builder_add_object(&b,
SPA_TYPE_OBJECT_Format, SPA_PARAM_EnumFormat,
SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_application),
SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_control)));
}
SPA_EXPORT
void *pw_filter_add_port(struct pw_filter *filter,
enum pw_direction direction,
@ -1341,6 +1354,9 @@ void *pw_filter_add_port(struct pw_filter *filter,
add_audio_dsp_port_params(impl, p);
else if (!strcmp(str, "32 bit float RGBA video"))
add_video_dsp_port_params(impl, p);
else if (!strcmp(str, "8 bit raw midi") ||
!strcmp(str, "8 bit raw control"))
add_control_dsp_port_params(impl, p);
}
/* then override with user provided if any */
if ((res = update_params(impl, p, SPA_ID_INVALID, params, n_params)) < 0)