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screen-cast/src: Allow for source with adaptive stream size

Browse Source 
The area source, window source, and monitor source, currently set up the
stream size up front, given the area, maximum allowed window size or
monitor resolution, but for to be introduced sources, the size will be
negotiated using PipeWire, instead of specified via the D-Bus API. This
commit changes the internal source API to allow for this. There are
currently no users of this new behaviour.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1698>
This commit is contained in:
Jonas Ådahl 2021-02-01 10:41:57 +01:00 committed by Marge Bot
parent cf5836a6ec
commit 2fbde28720
5 changed files with 72 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/backends/meta-screen-cast-area-stream-src.c
View File

@ -83,7 +83,7 @@ get_backend (MetaScreenCastAreaStreamSrc *area_src)
return meta_screen_cast_get_backend (screen_cast);
}
static void
static gboolean
meta_screen_cast_area_stream_src_get_specs (MetaScreenCastStreamSrc *src,
int *width,
int *height,
@ -100,6 +100,8 @@ meta_screen_cast_area_stream_src_get_specs (MetaScreenCastStreamSrc *src,
*width = (int) roundf (area->width * scale);
*height = (int) roundf (area->height * scale);
*frame_rate = 60.0;
return TRUE;
}
static gboolean

4
src/backends/meta-screen-cast-monitor-stream-src.c
View File

@ -87,7 +87,7 @@ get_monitor (MetaScreenCastMonitorStreamSrc *monitor_src)
return meta_screen_cast_monitor_stream_get_monitor (monitor_stream);
}
static void
static gboolean
meta_screen_cast_monitor_stream_src_get_specs (MetaScreenCastStreamSrc *src,
int *width,
int *height,
@ -112,6 +112,8 @@ meta_screen_cast_monitor_stream_src_get_specs (MetaScreenCastStreamSrc *src,
*width = (int) roundf (logical_monitor->rect.width * scale);
*height = (int) roundf (logical_monitor->rect.height * scale);
*frame_rate = meta_monitor_mode_get_refresh_rate (mode);
return TRUE;
}
static void

77
src/backends/meta-screen-cast-stream-src.c
View File

@ -47,6 +47,14 @@
(sizeof (struct spa_meta_cursor) + \
sizeof (struct spa_meta_bitmap) + width * height * 4)
#define DEFAULT_SIZE SPA_RECTANGLE (1280, 720)
#define MIN_SIZE SPA_RECTANGLE (1, 1)
#define MAX_SIZE SPA_RECTANGLE (16384, 16386)
#define DEFAULT_FRAME_RATE SPA_FRACTION (60, 1)
#define MIN_FRAME_RATE SPA_FRACTION (1, 1)
#define MAX_FRAME_RATE SPA_FRACTION (1000, 1)
enum
{
PROP_0,
@ -107,7 +115,7 @@ G_DEFINE_TYPE_WITH_CODE (MetaScreenCastStreamSrc,
meta_screen_cast_stream_src_init_initable_iface)
G_ADD_PRIVATE (MetaScreenCastStreamSrc))
static void
static gboolean
meta_screen_cast_stream_src_get_specs (MetaScreenCastStreamSrc *src,
int *width,
int *height,
@ -116,7 +124,7 @@ meta_screen_cast_stream_src_get_specs (MetaScreenCastStreamSrc *src,
MetaScreenCastStreamSrcClass *klass =
META_SCREEN_CAST_STREAM_SRC_GET_CLASS (src);
klass->get_specs (src, width, height, frame_rate);
return klass->get_specs (src, width, height, frame_rate);
}
static gboolean
@ -694,6 +702,8 @@ on_stream_param_changed (void *data,
MetaScreenCastStreamSrc *src = data;
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
MetaScreenCastStreamSrcClass *klass =
META_SCREEN_CAST_STREAM_SRC_GET_CLASS (src);
uint8_t params_buffer[1024];
int32_t width, height, stride, size;
struct spa_pod_builder pod_builder;
@ -737,6 +747,9 @@ on_stream_param_changed (void *data,
SPA_PARAM_META_size, SPA_POD_Int (CURSOR_META_SIZE (384, 384)));
pw_stream_update_params (priv->pipewire_stream, params, G_N_ELEMENTS (params));
if (klass->notify_params_updated)
klass->notify_params_updated (src, &priv->video_format);
}
static void
@ -884,9 +897,6 @@ create_pipewire_stream (MetaScreenCastStreamSrc *src,
int width;
int height;
float frame_rate;
MetaFraction frame_rate_fraction;
struct spa_fraction max_framerate;
struct spa_fraction min_framerate;
const struct spa_pod *params[1];
int result;
@ -903,24 +913,49 @@ create_pipewire_stream (MetaScreenCastStreamSrc *src,
return NULL;
}
meta_screen_cast_stream_src_get_specs (src, &width, &height, &frame_rate);
frame_rate_fraction = meta_fraction_from_double (frame_rate);
if (meta_screen_cast_stream_src_get_specs (src, &width, &height, &frame_rate))
{
MetaFraction frame_rate_fraction;
struct spa_fraction max_framerate;
struct spa_fraction min_framerate;
min_framerate = SPA_FRACTION (1, 1);
max_framerate = SPA_FRACTION (frame_rate_fraction.num,
frame_rate_fraction.denom);
frame_rate_fraction = meta_fraction_from_double (frame_rate);
params[0] = spa_pod_builder_add_object (
&pod_builder,
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 (SPA_VIDEO_FORMAT_BGRx),
SPA_FORMAT_VIDEO_size, SPA_POD_Rectangle (&SPA_RECTANGLE (width, height)),
SPA_FORMAT_VIDEO_framerate, SPA_POD_Fraction (&SPA_FRACTION (0, 1)),
SPA_FORMAT_VIDEO_maxFramerate, SPA_POD_CHOICE_RANGE_Fraction (&max_framerate,
&min_framerate,
&max_framerate));
min_framerate = SPA_FRACTION (1, 1);
max_framerate = SPA_FRACTION (frame_rate_fraction.num,
frame_rate_fraction.denom);
params[0] = spa_pod_builder_add_object (
&pod_builder,
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 (SPA_VIDEO_FORMAT_BGRx),
SPA_FORMAT_VIDEO_size, SPA_POD_Rectangle (&SPA_RECTANGLE (width,
height)),
SPA_FORMAT_VIDEO_framerate, SPA_POD_Fraction (&SPA_FRACTION (0, 1)),
SPA_FORMAT_VIDEO_maxFramerate,
SPA_POD_CHOICE_RANGE_Fraction (&max_framerate,
&min_framerate,
&max_framerate));
}
else
{
params[0] = spa_pod_builder_add_object (
&pod_builder,
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 (SPA_VIDEO_FORMAT_BGRx),
SPA_FORMAT_VIDEO_size, SPA_POD_CHOICE_RANGE_Rectangle (&DEFAULT_SIZE,
&MIN_SIZE,
&MAX_SIZE),
SPA_FORMAT_VIDEO_framerate, SPA_POD_Fraction (&SPA_FRACTION (0, 1)),
SPA_FORMAT_VIDEO_maxFramerate,
SPA_POD_CHOICE_RANGE_Fraction (&DEFAULT_FRAME_RATE,
&MIN_FRAME_RATE,
&MAX_FRAME_RATE));
}
pw_stream_add_listener (pipewire_stream,
&priv->pipewire_stream_listener,

11
src/backends/meta-screen-cast-stream-src.h
View File

@ -53,10 +53,10 @@ struct _MetaScreenCastStreamSrcClass
{
GObjectClass parent_class;
void (* get_specs) (MetaScreenCastStreamSrc *src,
int *width,
int *height,
float *frame_rate);
gboolean (* get_specs) (MetaScreenCastStreamSrc *src,
int *width,
int *height,
float *frame_rate);
void (* enable) (MetaScreenCastStreamSrc *src);
void (* disable) (MetaScreenCastStreamSrc *src);
gboolean (* record_to_buffer) (MetaScreenCastStreamSrc *src,
@ -74,6 +74,9 @@ struct _MetaScreenCastStreamSrcClass
MetaRectangle *crop_rect);
void (* set_cursor_metadata) (MetaScreenCastStreamSrc *src,
struct spa_meta_cursor *spa_meta_cursor);
void (* notify_params_updated) (MetaScreenCastStreamSrc *src,
struct spa_video_info_raw *video_format);
};
void meta_screen_cast_stream_src_close (MetaScreenCastStreamSrc *src);

4
src/backends/meta-screen-cast-window-stream-src.c
View File

@ -275,7 +275,7 @@ capture_into (MetaScreenCastWindowStreamSrc *window_src,
return TRUE;
}
static void
static gboolean
meta_screen_cast_window_stream_src_get_specs (MetaScreenCastStreamSrc *src,
int *width,
int *height,
@ -287,6 +287,8 @@ meta_screen_cast_window_stream_src_get_specs (MetaScreenCastStreamSrc *src,
*width = get_stream_width (window_src);
*height = get_stream_height (window_src);
*frame_rate = 60.0f;
return TRUE;
}
static gboolean