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Use clutter_stage_capture instead of cogl's read_pixels

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There is no longer any guarantee that there'll be one single
framebuffer to read pixels from. In order to still read pixels from the
stage, use the new clutter_stage_capture API.

https://bugzilla.gnome.org/show_bug.cgi?id=768979
This commit is contained in:
Jonas Ådahl
2016-06-27 15:57:28 +08:00
parent 0dac0ad516
commit f5c058a036
2 changed files with 57 additions and 41 deletions
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48
src/shell-recorder.c
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@@ -389,11 +389,17 @@ recorder_draw_cursor (ShellRecorder *recorder,
/* Retrieve a frame and feed it into the pipeline
*/
static void
recorder_record_frame (ShellRecorder *recorder)
recorder_record_frame (ShellRecorder *recorder,
gboolean paint)
{
GstBuffer *buffer;
guint8 *data;
ClutterCapture *captures;
int n_captures;
cairo_surface_t *image;
guint size;
uint8_t *data;
GstMemory *memory;
int i;
GstClock *clock;
GstClockTime now, base_time;
@@ -425,21 +431,31 @@ recorder_record_frame (ShellRecorder *recorder)
return;
recorder->last_frame_time = now;
size = recorder->area.width * recorder->area.height * 4;
clutter_stage_capture (recorder->stage, paint, &recorder->area,
&captures, &n_captures);
data = g_malloc (size);
cogl_framebuffer_read_pixels (cogl_get_draw_framebuffer (),
recorder->area.x,
recorder->area.y,
recorder->area.width,
recorder->area.height,
CLUTTER_CAIRO_FORMAT_ARGB32,
data);
if (n_captures == 0)
return;
/*
* TODO: Deal with each capture region separately, instead of dropping
* anything except the first one.
*/
image = captures[0].image;
data = cairo_image_surface_get_data (image);
size = captures[0].rect.width * captures[0].rect.height * 4;
/* TODO: Capture more than the first framebuffer. */
for (i = 1; i < n_captures; i++)
cairo_surface_destroy (captures[i].image);
g_free (captures);
buffer = gst_buffer_new();
gst_buffer_insert_memory (buffer, -1,
gst_memory_new_wrapped (0, data, size, 0,
size, data, g_free));
memory = gst_memory_new_wrapped (0, data, size, 0, size,
image,
(GDestroyNotify) cairo_surface_destroy);
gst_buffer_insert_memory (buffer, -1, memory);
GST_BUFFER_PTS(buffer) = now;
@@ -463,7 +479,7 @@ recorder_on_stage_paint (ClutterActor *actor,
ShellRecorder *recorder)
{
if (recorder->state == RECORDER_STATE_RECORDING)
recorder_record_frame (recorder);
recorder_record_frame (recorder, FALSE);
}
static void
@@ -1561,7 +1577,7 @@ shell_recorder_close (ShellRecorder *recorder)
/* We want to record one more frame since some time may have
* elapsed since the last frame
*/
clutter_actor_paint (CLUTTER_ACTOR (recorder->stage));
recorder_record_frame (recorder, TRUE);
recorder_remove_update_pointer_timeout (recorder);
recorder_close_pipeline (recorder);