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Advertise format with alpha channel stripped

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This commit is contained in:
Simon Ser 2020-05-03 16:33:45 +02:00 committed by danshick
parent 3b56140032
commit 26b6bf69aa
3 changed files with 32 additions and 8 deletions
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4
include/screencast_common.h
View file

@ -108,6 +108,8 @@ struct xdpw_wlr_output {
};
void randname(char *buf);
uint32_t xdpw_format_pw_from_wl_shm(void *data);
enum spa_video_format xdpw_format_pw_from_wl_shm(
struct xdpw_screencast_instance *cast);
enum spa_video_format xdpw_format_pw_strip_alpha(enum spa_video_format format);
#endif /* SCREENCAST_COMMON_H */

16
src/screencast/pipewire_screencast.c
View file

@ -141,7 +141,6 @@ void xdpw_pwr_stream_init(struct xdpw_screencast_instance *cast) {
pw_loop_enter(state->pw_loop);
const struct spa_pod *params[1];
uint8_t buffer[1024];
struct spa_pod_builder b = SPA_POD_BUILDER_INIT(buffer, sizeof(buffer));
@ -163,11 +162,20 @@ void xdpw_pwr_stream_init(struct xdpw_screencast_instance *cast) {
pw_loop_add_event(state->pw_loop, pwr_on_event, cast);
logprint(DEBUG, "pipewire: registered event %p", cast->event);
params[0] = spa_pod_builder_add_object(&b,
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_Id(xdpw_format_pw_from_wl_shm(cast)),
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(
&SPA_RECTANGLE(cast->simple_frame.width, cast->simple_frame.height),
&SPA_RECTANGLE(1, 1),
@ -187,7 +195,7 @@ void xdpw_pwr_stream_init(struct xdpw_screencast_instance *cast) {
PW_ID_ANY,
(PW_STREAM_FLAG_DRIVER |
PW_STREAM_FLAG_MAP_BUFFERS),
params, 1);
&param, 1);
}

20
src/screencast/screencast_common.c
View file

@ -12,9 +12,8 @@ void randname(char *buf) {
}
}
enum spa_video_format xdpw_format_pw_from_wl_shm(void *data) {
struct xdpw_screencast_instance *cast = data;
enum spa_video_format xdpw_format_pw_from_wl_shm(
struct xdpw_screencast_instance *cast) {
if (cast->ctx->forced_pixelformat) {
if (strcmp(cast->ctx->forced_pixelformat, "BGRx") == 0) {
return SPA_VIDEO_FORMAT_BGRx;
@ -47,3 +46,18 @@ enum spa_video_format xdpw_format_pw_from_wl_shm(void *data) {
abort();
}
}
enum spa_video_format xdpw_format_pw_strip_alpha(enum spa_video_format format) {
switch (format) {
case SPA_VIDEO_FORMAT_BGRA:
return SPA_VIDEO_FORMAT_BGRx;
case SPA_VIDEO_FORMAT_ABGR:
return SPA_VIDEO_FORMAT_xBGR;
case SPA_VIDEO_FORMAT_RGBA:
return SPA_VIDEO_FORMAT_RGBx;
case SPA_VIDEO_FORMAT_ARGB:
return SPA_VIDEO_FORMAT_xRGB;
default:
return SPA_VIDEO_FORMAT_UNKNOWN;
}
}