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avfvideosrc: allow "capture-screen" mode to select which screen to capture via the "device-index" option

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=745161
This commit is contained in:
Florian Zwoch 2015-02-25 13:52:21 +01:00 committed by Sebastian Dröge
parent 1172e2875d
commit a8ae57480c
1 changed files with 34 additions and 8 deletions
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42
sys/applemedia/avfvideosrc.m
View file

@ -24,6 +24,9 @@
#include "avfvideosrc.h"
#import <AVFoundation/AVFoundation.h>
#if !HAVE_IOS
#import <AppKit/AppKit.h>
#endif
#include <gst/video/video.h>
#include <gst/gl/gstglcontext.h>
#include "coremediabuffer.h"
@ -75,9 +78,6 @@ G_DEFINE_TYPE (GstAVFVideoSrc, gst_avf_video_src, GST_TYPE_PUSH_SRC);
gint deviceIndex;
BOOL doStats;
#if !HAVE_IOS
CGDirectDisplayID displayId;
#endif
AVCaptureSession *session;
AVCaptureInput *input;
@ -126,6 +126,9 @@ G_DEFINE_TYPE (GstAVFVideoSrc, gst_avf_video_src, GST_TYPE_PUSH_SRC);
- (BOOL)openDevice;
- (void)closeDevice;
- (GstVideoFormat)getGstVideoFormat:(NSNumber *)pixel_format;
#if !HAVE_IOS
- (CGDirectDisplayID)getDisplayIdFromDeviceIndex;
#endif
- (BOOL)getDeviceCaps:(GstCaps *)result;
- (BOOL)setDeviceCaps:(GstVideoInfo *)info;
- (BOOL)getSessionPresetCaps:(GstCaps *)result;
@ -169,9 +172,6 @@ didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
captureScreenMouseClicks = NO;
useVideoMeta = NO;
textureCache = NULL;
#if !HAVE_IOS
displayId = kCGDirectMainDisplay;
#endif
mainQueue =
dispatch_queue_create ("org.freedesktop.gstreamer.avfvideosrc.main", NULL);
@ -200,7 +200,7 @@ didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
NSString *mediaType = AVMediaTypeVideo;
NSError *err;
if (deviceIndex == -1) {
if (deviceIndex == DEFAULT_DEVICE_INDEX) {
device = [AVCaptureDevice defaultDeviceWithMediaType:mediaType];
if (device == nil) {
GST_ELEMENT_ERROR (element, RESOURCE, NOT_FOUND,
@ -241,8 +241,14 @@ didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
#if HAVE_IOS
return NO;
#else
CGDirectDisplayID displayId;
GST_DEBUG_OBJECT (element, "Opening screen input");
displayId = [self getDisplayIdFromDeviceIndex];
if (displayId == 0)
return NO;
AVCaptureScreenInput *screenInput =
[[AVCaptureScreenInput alloc] initWithDisplayID:displayId];
@ -368,6 +374,26 @@ didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
return gst_format;
}
#if !HAVE_IOS
- (CGDirectDisplayID)getDisplayIdFromDeviceIndex
{
NSDictionary *description;
NSNumber *displayId;
NSArray *screens = [NSScreen screens];
if (deviceIndex == DEFAULT_DEVICE_INDEX)
return kCGDirectMainDisplay;
if (deviceIndex >= [screens count]) {
GST_ELEMENT_ERROR (element, RESOURCE, NOT_FOUND,
("Invalid screen capture device index"), (NULL));
return 0;
}
description = [[screens objectAtIndex:deviceIndex] deviceDescription];
displayId = [description objectForKey:@"NSScreenNumber"];
return [displayId unsignedIntegerValue];
}
#endif
- (BOOL)getDeviceCaps:(GstCaps *)result
{
NSArray *formats = [device valueForKey:@"formats"];
@ -547,7 +573,7 @@ didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
if (captureScreen) {
#if !HAVE_IOS
CGRect rect = CGDisplayBounds (displayId);
CGRect rect = CGDisplayBounds ([self getDisplayIdFromDeviceIndex]);
for (NSNumber *pixel_format in pixel_formats) {
GstVideoFormat gst_format = [self getGstVideoFormat:pixel_format];
if (gst_format != GST_VIDEO_FORMAT_UNKNOWN)