avfoundation: Simple capture

Originally based on the capture written by
Thilo Borgmann <thilo.borgmann@mail.de>.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Changelog

@@ -48,6 +48,7 @@ version <next>:
 - libkvazaar HEVC encoder
 - innoHeim/Rsupport Screen Capture Codec decoder
 - support encoding 16-bit RLE SGI images
+- support Apple AVFoundation video capture
 
 
 version 11:

configure

@@ -1453,6 +1453,7 @@ HAVE_LIST_PUB="
 "
 
 HEADERS_LIST="
+    AVFoundation_AVFoundation_h
     alsa_asoundlib_h
     altivec_h
     arpa_inet_h
@@ -2264,6 +2265,7 @@ xwma_demuxer_select="riffdec"
 # indevs / outdevs
 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
 alsa_outdev_deps="alsa_asoundlib_h"
+avfoundation_indev_deps="AVFoundation_AVFoundation_h"
 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
 dv1394_indev_deps="dv1394"
 dv1394_indev_select="dv_demuxer"
@@ -4560,6 +4562,11 @@ check_header linux/fb.h
 check_header linux/videodev2.h
 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
 
+check_header AVFoundation/AVFoundation.h &&
+    check_objcflags -fobjc-arc &&
+    add_extralibs -framework Foundation -framework AVFoundation -framework CoreMedia || \
+    disable AVFoundation_AVFoundation_h
+
 check_header sys/videoio.h
 
 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"

libavdevice/Makefile

@@ -9,6 +9,7 @@ OBJS    = alldevices.o                                                  \
 # input/output devices
 OBJS-$(CONFIG_ALSA_INDEV)                += alsa_dec.o alsa.o
 OBJS-$(CONFIG_ALSA_OUTDEV)               += alsa_enc.o alsa.o
+OBJS-$(CONFIG_AVFOUNDATION_INDEV)        += avfoundation_dec.o
 OBJS-$(CONFIG_BKTR_INDEV)                += bktr.o
 OBJS-$(CONFIG_DV1394_INDEV)              += dv1394.o
 OBJS-$(CONFIG_FBDEV_INDEV)               += fbdev.o

libavdevice/alldevices.c

@@ -48,6 +48,7 @@ void avdevice_register_all(void)
 
     /* devices */
     REGISTER_INOUTDEV(ALSA,             alsa);
+    REGISTER_INDEV   (AVFOUNDATION,     avfoundation);
     REGISTER_INDEV   (BKTR,             bktr);
     REGISTER_INDEV   (DV1394,           dv1394);
     REGISTER_INDEV   (FBDEV,            fbdev);

libavdevice/version.h

@@ -28,7 +28,7 @@
 #include "libavutil/version.h"
 
 #define LIBAVDEVICE_VERSION_MAJOR 56
-#define LIBAVDEVICE_VERSION_MINOR  0
+#define LIBAVDEVICE_VERSION_MINOR  1
 #define LIBAVDEVICE_VERSION_MICRO  0
 
 #define LIBAVDEVICE_VERSION_INT AV_VERSION_INT(LIBAVDEVICE_VERSION_MAJOR, \