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From: Romain Beauxis <toots@rastageeks.org>
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To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
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Subject: [FFmpeg-devel] [PATCH 3/5] libavdevice/avfoundation.m: Allow to
 select devices by unique ID
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--Apple-Mail=_D28B81D5-4D6B-4988-852C-8E3133B2507D
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This patch changes the logic around device selection to allow to use a =
static, machine-readable unique ID when selecting devices. Device names =
depends on locale settings and device index can change when =
plugging/unplugging devices.


--Apple-Mail=_D28B81D5-4D6B-4988-852C-8E3133B2507D
Content-Disposition: attachment;
	filename=0001-libavdevice-avfoundation.m-Allow-to-select-devices-by-.eml
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	name="0001-libavdevice-avfoundation.m-Allow-to-select-devices-by-.eml"
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=46rom=20bf72d48c846f5116866ec588fc0ee54a2c354e87=20Mon=20Sep=2017=20=
00:00:00=202001=0AFrom:=20Romain=20Beauxis=20<toots@rastageeks.org>=0A=
Date:=20Mon,=2013=20Dec=202021=2009:14:50=20-0600=0ASubject:=20[PATCH]=20=
libavdevice/avfoundation.m:=20Allow=20to=20select=20devices=20by=20=
unique=0A=20ID=0AX-Unsent:=201=0ATo:=20ffmpeg-devel@ffmpeg.org=0A=0A=
Signed-off-by:=20Romain=20Beauxis=20<toots@rastageeks.org>=0A---=0A=20=
doc/indevs.texi=20=20=20=20=20=20=20=20=20=20=20=20|=20=206=20++--=0A=20=
libavdevice/avfoundation.m=20|=2072=20=
+++++++++++++++++++++++++++++---------=0A=202=20files=20changed,=2060=20=
insertions(+),=2018=20deletions(-)=0A=0Adiff=20--git=20a/doc/indevs.texi=20=
b/doc/indevs.texi=0Aindex=209d8020311a..858c0fa4e4=20100644=0A---=20=
a/doc/indevs.texi=0A+++=20b/doc/indevs.texi=0A@@=20-114,7=20+114,7=20@@=20=
The=20input=20filename=20has=20to=20be=20given=20in=20the=20following=20=
syntax:=0A=20-i=20"[[VIDEO]:[AUDIO]]"=0A=20@end=20example=0A=20The=20=
first=20entry=20selects=20the=20video=20input=20while=20the=20latter=20=
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specified=20by=20the=20device=20name=20or=20the=20device=20index=20as=20=
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audio=20input=20device=20can=20be=20chosen=20by=20index=20using=20the=0A=20=
@option{=0A=20=20=20=20=20-video_device_index=20<INDEX>=0A@@=20-127,7=20=
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input=20filename.=0A=20=0A=20All=20available=20devices=20can=20be=20=
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Device=20name=20can=20be=20=0A+tricky=20to=20use=20when=20localized=20=
and=20device=20index=20can=20change=20when=20devices=20are=20plugged=20=
or=20unplugged.=20A=20device=0A+hash,=20when=20available,=20uniquely=20=
identifies=20a=20device=20and=20should=20not=20change=20over=20time.=0A=20=
=0A=20There=20are=20two=20device=20name=20aliases:=0A=20@table=20@code=0A=
diff=20--git=20a/libavdevice/avfoundation.m=20=
b/libavdevice/avfoundation.m=0Aindex=20e6f64b35b8..5d013cc0eb=20100644=0A=
---=20a/libavdevice/avfoundation.m=0A+++=20b/libavdevice/avfoundation.m=0A=
@@=20-39,6=20+39,8=20@@=0A=20#include=20"libavutil/imgutils.h"=0A=20=
#include=20"avdevice.h"=0A=20=0A+#define=20CLEANUP_DEVICE_ID(s)=20[[s=20=
stringByReplacingOccurrencesOfString:@":"=20withString:@"."]=20=
UTF8String]=0A+=0A=20static=20void=20av_log_avfoundation(void=20*s,=20=
int=20lvl,=20const=20char=20*str,=20OSStatus=20err)=20{=0A=20=20=20=20=20=
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@@=20-710,21=20+712,23=20@@=20static=20int=20=
avf_read_header(AVFormatContext=20*s)=0A=20=20=20=20=20=20=20=20=20int=20=
index=20=3D=200;=0A=20=20=20=20=20=20=20=20=20av_log(ctx,=20AV_LOG_INFO,=20=
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"[%d]=20Capture=20screen=20%d=20(ID:=20=
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screens,=20&num_screens);=0A-=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20AVCaptureScreenInput*=20capture_screen_input=20=3D=20=
[[[AVCaptureScreenInput=20alloc]=20initWithDisplayID:screens[idx]]=20=
autorelease];=0A+=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
capture_screen_input=20=3D=20[[[AVCaptureScreenInput=20alloc]=20=
initWithDisplayID:screens[idx]]=20autorelease];=0A+=20=20=20=20=20=20=20=20=
=20=20=20=20}=0A+=0A+=20=20=20=20=20=20=20=20=20=20=20=20=
if(sscanf(ctx->video_filename,=20"AvfilterAvfoundationCaptureScreen%d",=20=
&idx))=20{=0A+=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20for=20(int=20=
i=20=3D=200;=20i=20<=20num_screens;=20i++)=20{=0A+=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20if=20(screens[i]=20=3D=3D=20idx)=20{=0A=
+=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
capture_screen_input=20=3D=20[[[AVCaptureScreenInput=20alloc]=20=
initWithDisplayID:idx]=20autorelease];=0A+=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20}=0A+=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20}=0A+=20=20=20=20=20=20=20=20=20=20=20=20}=0A+=0A+=20=20=20=20=20=20=
=20=20=20=20=20=20if=20(capture_screen_input)=20{=0A=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20video_device=20=3D=20(AVCaptureDevice*)=20=
capture_screen_input;=0A=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
ctx->video_device_index=20=3D=20ctx->num_video_devices=20+=20idx;=0A=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20ctx->video_is_screen=20=3D=20=
1;=0A@@=20-868,7=20+901,14=20@@=20static=20int=20=
avf_read_header(AVFormatContext=20*s)=0A=20=20=20=20=20=20=20=20=20=
NSArray=20*devices=20=3D=20[AVCaptureDevice=20=
devicesWithMediaType:AVMediaTypeAudio];=0A=20=0A=20=20=20=20=20=20=20=20=20=
for=20(AVCaptureDevice=20*device=20in=20devices)=20{=0A-=20=20=20=20=20=20=
=20=20=20=20=20=20if=20(!strncmp(ctx->audio_filename,=20[[device=20=
localizedName]=20UTF8String],=20strlen(ctx->audio_filename)))=20{=0A+=20=20=
=20=20=20=20=20=20=20=20=20=20const=20char=20*name=20=3D=20[[device=20=
localizedName]=20UTF8String];=0A+=20=20=20=20=20=20=20=20=20=20=20=20if=20=
(!strncmp(ctx->audio_filename,=20name,=20strlen(ctx->audio_filename)))=20=
{=0A+=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20audio_device=20=3D=20=
device;=0A+=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20break;=0A+=20=20=
=20=20=20=20=20=20=20=20=20=20}=0A+=0A+=20=20=20=20=20=20=20=20=20=20=20=20=
const=20char=20*uniqueId=20=3D=20CLEANUP_DEVICE_ID([device=20uniqueID]);=0A=
+=20=20=20=20=20=20=20=20=20=20=20=20if=20(!strncmp(ctx->audio_filename,=20=
uniqueId,=20strlen(ctx->audio_filename)))=20{=0A=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20audio_device=20=3D=20device;=0A=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20break;=0A=20=20=20=20=20=20=20=20=20=20=20=
=20=20}=0A--=20=0A2.32.0=20(Apple=20Git-132)=0A=0A=

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