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pipewire: Fix building EnumFormat spa object

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Make sure that in SPA_POD_CHOICE_ENUM_Id(n_vals, ...) we always pass
exactly n_vals arguments. For this we build the object with separate
spa_pod_builder_add calls, since n_vals is known at runtime.
Fix #102
This commit is contained in:
Stefano Ragni 2021-03-16 11:50:36 +01:00 committed by danshick
parent f3bd5195e4
commit 6c8f6ca78e
1 changed files with 22 additions and 15 deletions
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35
src/screencast/pipewire_screencast.c
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@ -166,27 +166,34 @@ void xdpw_pwr_stream_init(struct xdpw_screencast_instance *cast) {
enum spa_video_format format = xdpw_format_pw_from_wl_shm(cast);
enum spa_video_format format_without_alpha =
xdpw_format_pw_strip_alpha(format);
uint32_t n_formats = 1;
if (format_without_alpha != SPA_VIDEO_FORMAT_UNKNOWN) {
n_formats++;
}
const struct spa_pod *param = spa_pod_builder_add_object(&b,
SPA_TYPE_OBJECT_Format, SPA_PARAM_EnumFormat,
SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_video),
SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_raw),
SPA_FORMAT_VIDEO_format, SPA_POD_CHOICE_ENUM_Id(n_formats + 1,
format, format, format_without_alpha),
SPA_FORMAT_VIDEO_size, SPA_POD_CHOICE_RANGE_Rectangle(
struct spa_pod_frame f;
spa_pod_builder_push_object(&b, &f, SPA_TYPE_OBJECT_Format, SPA_PARAM_EnumFormat);
spa_pod_builder_add(&b, SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_video), 0);
spa_pod_builder_add(&b, SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_raw), 0);
if (format_without_alpha != SPA_VIDEO_FORMAT_UNKNOWN) {
spa_pod_builder_add(&b, SPA_FORMAT_VIDEO_format,
SPA_POD_CHOICE_ENUM_Id(3, format, format, format_without_alpha), 0);
} else {
spa_pod_builder_add(&b, SPA_FORMAT_VIDEO_format,
SPA_POD_CHOICE_ENUM_Id(2, format, format), 0);
}
spa_pod_builder_add(&b, SPA_FORMAT_VIDEO_size,
SPA_POD_CHOICE_RANGE_Rectangle(
&SPA_RECTANGLE(cast->simple_frame.width, cast->simple_frame.height),
&SPA_RECTANGLE(1, 1),
&SPA_RECTANGLE(4096, 4096)),
0);
// variable framerate
SPA_FORMAT_VIDEO_framerate, SPA_POD_Fraction(&SPA_FRACTION(0, 1)),
SPA_FORMAT_VIDEO_maxFramerate, SPA_POD_CHOICE_RANGE_Fraction(
spa_pod_builder_add(&b, SPA_FORMAT_VIDEO_framerate,
SPA_POD_Fraction(&SPA_FRACTION(0, 1)), 0);
spa_pod_builder_add(&b, SPA_FORMAT_VIDEO_maxFramerate,
SPA_POD_CHOICE_RANGE_Fraction(
&SPA_FRACTION(cast->framerate, 1),
&SPA_FRACTION(1, 1),
&SPA_FRACTION(cast->framerate, 1)));
&SPA_FRACTION(cast->framerate, 1)),
0);
const struct spa_pod *param = spa_pod_builder_pop(&b, &f);
pw_stream_add_listener(cast->stream, &cast->stream_listener,
&pwr_stream_events, cast);