2 * CoreAudio audio output driver for Mac OS X
4 * original copyright (C) Timothy J. Wood - Aug 2000
5 * ported to MPlayer libao2 by Dan Christiansen
7 * The S/PDIF part of the code is based on the auhal audio output
8 * module from VideoLAN:
9 * Copyright (c) 2006 Derk-Jan Hartman <hartman at videolan dot org>
11 * This file is part of MPlayer.
13 * MPlayer is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * MPlayer is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License along
24 * along with MPlayer; if not, write to the Free Software
25 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
29 * The MacOS X CoreAudio framework doesn't mesh as simply as some
30 * simpler frameworks do. This is due to the fact that CoreAudio pulls
31 * audio samples rather than having them pushed at it (which is nice
32 * when you are wanting to do good buffering of audio).
34 * AC-3 and MPEG audio passthrough is possible, but has never been tested
35 * due to lack of a soundcard that supports it.
38 #include <CoreServices/CoreServices.h>
39 #include <AudioUnit/AudioUnit.h>
40 #include <AudioToolbox/AudioToolbox.h>
45 #include <sys/types.h>
51 #include "audio_out.h"
52 #include "audio_out_internal.h"
53 #include "libaf/af_format.h"
54 #include "osdep/timer.h"
55 #include "libavutil/fifo.h"
56 #include "subopt-helper.h"
58 static const ao_info_t info
=
60 "Darwin/Mac OS X native audio output",
62 "Timothy J. Wood & Dan Christiansen & Chris Roccati",
66 LIBAO_EXTERN(coreaudio
)
68 /* Prefix for all mp_msg() calls */
69 #define ao_msg(a, b, c...) mp_msg(a, b, "AO: [coreaudio] " c)
71 typedef struct ao_coreaudio_s
73 AudioDeviceID i_selected_dev
; /* Keeps DeviceID of the selected device. */
74 int b_supports_digital
; /* Does the currently selected device support digital mode? */
75 int b_digital
; /* Are we running in digital mode? */
76 int b_muted
; /* Are we muted in digital mode? */
78 AudioDeviceIOProcID renderCallback
; /* Render callback used for SPDIF */
81 AudioUnit theOutputUnit
;
83 /* CoreAudio SPDIF mode specific */
84 pid_t i_hog_pid
; /* Keeps the pid of our hog status. */
85 AudioStreamID i_stream_id
; /* The StreamID that has a cac3 streamformat */
86 int i_stream_index
; /* The index of i_stream_id in an AudioBufferList */
87 AudioStreamBasicDescription stream_format
;/* The format we changed the stream to */
88 AudioStreamBasicDescription sfmt_revert
; /* The original format of the stream */
89 int b_revert
; /* Whether we need to revert the stream format */
90 int b_changed_mixing
; /* Whether we need to set the mixing mode back */
91 int b_stream_format_changed
; /* Flag for main thread to reset stream's format to digital and reset buffer */
93 /* Original common part */
99 unsigned int buffer_len
; ///< must always be num_chunks * chunk_size
100 unsigned int num_chunks
;
101 unsigned int chunk_size
;
104 static ao_coreaudio_t
*ao
= NULL
;
107 * \brief add data to ringbuffer
109 static int write_buffer(unsigned char* data
, int len
){
110 int free
= ao
->buffer_len
- av_fifo_size(ao
->buffer
);
111 if (len
> free
) len
= free
;
112 return av_fifo_generic_write(ao
->buffer
, data
, len
, NULL
);
116 * \brief remove data from ringbuffer
118 static int read_buffer(unsigned char* data
,int len
){
119 int buffered
= av_fifo_size(ao
->buffer
);
120 if (len
> buffered
) len
= buffered
;
121 av_fifo_generic_read(ao
->buffer
, data
, len
, NULL
);
125 static OSStatus
theRenderProc(void *inRefCon
,
126 AudioUnitRenderActionFlags
*inActionFlags
,
127 const AudioTimeStamp
*inTimeStamp
,
128 UInt32 inBusNumber
, UInt32 inNumFrames
,
129 AudioBufferList
*ioData
)
131 int amt
=av_fifo_size(ao
->buffer
);
132 int req
=(inNumFrames
)*ao
->packetSize
;
138 read_buffer((unsigned char *)ioData
->mBuffers
[0].mData
, amt
);
140 ioData
->mBuffers
[0].mDataByteSize
= amt
;
145 static int control(int cmd
,void *arg
){
146 ao_control_vol_t
*control_vol
;
150 case AOCONTROL_GET_VOLUME
:
151 control_vol
= (ao_control_vol_t
*)arg
;
153 // Digital output has no volume adjust.
154 return CONTROL_FALSE
;
156 err
= AudioUnitGetParameter(ao
->theOutputUnit
, kHALOutputParam_Volume
, kAudioUnitScope_Global
, 0, &vol
);
159 // printf("GET VOL=%f\n", vol);
160 control_vol
->left
=control_vol
->right
=vol
*100.0/4.0;
164 ao_msg(MSGT_AO
, MSGL_WARN
, "could not get HAL output volume: [%4.4s]\n", (char *)&err
);
165 return CONTROL_FALSE
;
168 case AOCONTROL_SET_VOLUME
:
169 control_vol
= (ao_control_vol_t
*)arg
;
172 // Digital output can not set volume. Here we have to return true
173 // to make mixer forget it. Else mixer will add a soft filter,
174 // that's not we expected and the filter not support ac3 stream
175 // will cause mplayer die.
177 // Although not support set volume, but at least we support mute.
178 // MPlayer set mute by set volume to zero, we handle it.
179 if (control_vol
->left
== 0 && control_vol
->right
== 0)
186 vol
=(control_vol
->left
+control_vol
->right
)*4.0/200.0;
187 err
= AudioUnitSetParameter(ao
->theOutputUnit
, kHALOutputParam_Volume
, kAudioUnitScope_Global
, 0, vol
, 0);
189 // printf("SET VOL=%f\n", vol);
193 ao_msg(MSGT_AO
, MSGL_WARN
, "could not set HAL output volume: [%4.4s]\n", (char *)&err
);
194 return CONTROL_FALSE
;
196 /* Everything is currently unimplemented */
198 return CONTROL_FALSE
;
204 static void print_format(int lev
, const char* str
, const AudioStreamBasicDescription
*f
){
205 uint32_t flags
=(uint32_t) f
->mFormatFlags
;
206 ao_msg(MSGT_AO
,lev
, "%s %7.1fHz %"PRIu32
"bit [%c%c%c%c][%"PRIu32
"][%"PRIu32
"][%"PRIu32
"][%"PRIu32
"][%"PRIu32
"] %s %s %s%s%s%s\n",
207 str
, f
->mSampleRate
, f
->mBitsPerChannel
,
208 (int)(f
->mFormatID
& 0xff000000) >> 24,
209 (int)(f
->mFormatID
& 0x00ff0000) >> 16,
210 (int)(f
->mFormatID
& 0x0000ff00) >> 8,
211 (int)(f
->mFormatID
& 0x000000ff) >> 0,
212 f
->mFormatFlags
, f
->mBytesPerPacket
,
213 f
->mFramesPerPacket
, f
->mBytesPerFrame
,
214 f
->mChannelsPerFrame
,
215 (flags
&kAudioFormatFlagIsFloat
) ? "float" : "int",
216 (flags
&kAudioFormatFlagIsBigEndian
) ? "BE" : "LE",
217 (flags
&kAudioFormatFlagIsSignedInteger
) ? "S" : "U",
218 (flags
&kAudioFormatFlagIsPacked
) ? " packed" : "",
219 (flags
&kAudioFormatFlagIsAlignedHigh
) ? " aligned" : "",
220 (flags
&kAudioFormatFlagIsNonInterleaved
) ? " ni" : "" );
223 static OSStatus
GetAudioProperty(AudioObjectID id
,
224 AudioObjectPropertySelector selector
,
225 UInt32 outSize
, void *outData
)
227 AudioObjectPropertyAddress property_address
;
229 property_address
.mSelector
= selector
;
230 property_address
.mScope
= kAudioObjectPropertyScopeGlobal
;
231 property_address
.mElement
= kAudioObjectPropertyElementMaster
;
233 return AudioObjectGetPropertyData(id
, &property_address
, 0, NULL
, &outSize
, outData
);
236 static UInt32
GetAudioPropertyArray(AudioObjectID id
,
237 AudioObjectPropertySelector selector
,
238 AudioObjectPropertyScope scope
,
242 AudioObjectPropertyAddress property_address
;
245 property_address
.mSelector
= selector
;
246 property_address
.mScope
= scope
;
247 property_address
.mElement
= kAudioObjectPropertyElementMaster
;
249 err
= AudioObjectGetPropertyDataSize(id
, &property_address
, 0, NULL
, &i_param_size
);
254 *outData
= malloc(i_param_size
);
257 err
= AudioObjectGetPropertyData(id
, &property_address
, 0, NULL
, &i_param_size
, *outData
);
267 static UInt32
GetGlobalAudioPropertyArray(AudioObjectID id
,
268 AudioObjectPropertySelector selector
,
271 return GetAudioPropertyArray(id
, selector
, kAudioObjectPropertyScopeGlobal
, outData
);
274 static OSStatus
GetAudioPropertyString(AudioObjectID id
,
275 AudioObjectPropertySelector selector
,
279 AudioObjectPropertyAddress property_address
;
282 CFIndex string_length
;
284 property_address
.mSelector
= selector
;
285 property_address
.mScope
= kAudioObjectPropertyScopeGlobal
;
286 property_address
.mElement
= kAudioObjectPropertyElementMaster
;
288 i_param_size
= sizeof(CFStringRef
);
289 err
= AudioObjectGetPropertyData(id
, &property_address
, 0, NULL
, &i_param_size
, &string
);
293 string_length
= CFStringGetMaximumSizeForEncoding(CFStringGetLength(string
),
294 kCFStringEncodingASCII
);
295 *outData
= malloc(string_length
+ 1);
296 CFStringGetCString(string
, *outData
, string_length
+ 1, kCFStringEncodingASCII
);
303 static OSStatus
SetAudioProperty(AudioObjectID id
,
304 AudioObjectPropertySelector selector
,
305 UInt32 inDataSize
, void *inData
)
307 AudioObjectPropertyAddress property_address
;
309 property_address
.mSelector
= selector
;
310 property_address
.mScope
= kAudioObjectPropertyScopeGlobal
;
311 property_address
.mElement
= kAudioObjectPropertyElementMaster
;
313 return AudioObjectSetPropertyData(id
, &property_address
, 0, NULL
, inDataSize
, inData
);
316 static Boolean
IsAudioPropertySettable(AudioObjectID id
,
317 AudioObjectPropertySelector selector
,
320 AudioObjectPropertyAddress property_address
;
322 property_address
.mSelector
= selector
;
323 property_address
.mScope
= kAudioObjectPropertyScopeGlobal
;
324 property_address
.mElement
= kAudioObjectPropertyElementMaster
;
326 return AudioObjectIsPropertySettable(id
, &property_address
, outData
);
329 static int AudioDeviceSupportsDigital( AudioDeviceID i_dev_id
);
330 static int AudioStreamSupportsDigital( AudioStreamID i_stream_id
);
331 static int OpenSPDIF(void);
332 static int AudioStreamChangeFormat( AudioStreamID i_stream_id
, AudioStreamBasicDescription change_format
);
333 static OSStatus
RenderCallbackSPDIF( AudioDeviceID inDevice
,
334 const AudioTimeStamp
* inNow
,
335 const void * inInputData
,
336 const AudioTimeStamp
* inInputTime
,
337 AudioBufferList
* outOutputData
,
338 const AudioTimeStamp
* inOutputTime
,
339 void * threadGlobals
);
340 static OSStatus
StreamListener( AudioObjectID inObjectID
,
341 UInt32 inNumberAddresses
,
342 const AudioObjectPropertyAddress inAddresses
[],
343 void *inClientData
);
344 static OSStatus
DeviceListener( AudioObjectID inObjectID
,
345 UInt32 inNumberAddresses
,
346 const AudioObjectPropertyAddress inAddresses
[],
347 void *inClientData
);
349 static void print_help(void)
354 AudioDeviceID
*devids
;
357 mp_msg(MSGT_AO
, MSGL_FATAL
,
358 "\n-ao coreaudio commandline help:\n"
359 "Example: mplayer -ao coreaudio:device_id=266\n"
360 " open Core Audio with output device ID 266.\n"
363 " ID of output device to use (0 = default device)\n"
365 " This help including list of available devices.\n"
367 "Available output devices:\n");
369 i_param_size
= GetGlobalAudioPropertyArray(kAudioObjectSystemObject
, kAudioHardwarePropertyDevices
, (void **)&devids
);
372 mp_msg(MSGT_AO
, MSGL_FATAL
, "Failed to get list of output devices.\n");
376 num_devices
= i_param_size
/ sizeof(AudioDeviceID
);
378 for (int i
= 0; i
< num_devices
; ++i
) {
379 err
= GetAudioPropertyString(devids
[i
], kAudioObjectPropertyName
, &device_name
);
382 mp_msg(MSGT_AO
, MSGL_FATAL
, "%s (id: %"PRIu32
")\n", device_name
, devids
[i
]);
385 mp_msg(MSGT_AO
, MSGL_FATAL
, "Unknown (id: %"PRIu32
")\n", devids
[i
]);
388 mp_msg(MSGT_AO
, MSGL_FATAL
, "\n");
393 static int init(int rate
,int channels
,int format
,int flags
)
395 AudioStreamBasicDescription inDesc
;
396 ComponentDescription desc
;
398 AURenderCallbackStruct renderCallback
;
400 UInt32 size
, maxFrames
, b_alive
;
402 AudioDeviceID devid_def
= 0;
403 int device_id
, display_help
= 0;
405 const opt_t subopts
[] = {
406 {"device_id", OPT_ARG_INT
, &device_id
, NULL
},
407 {"help", OPT_ARG_BOOL
, &display_help
, NULL
},
414 if (subopt_parse(ao_subdevice
, subopts
) != 0 || display_help
) {
420 ao_msg(MSGT_AO
,MSGL_V
, "init([%dHz][%dch][%s][%d])\n", rate
, channels
, af_fmt2str_short(format
), flags
);
422 ao
= calloc(1, sizeof(ao_coreaudio_t
));
424 ao
->i_selected_dev
= 0;
425 ao
->b_supports_digital
= 0;
428 ao
->b_stream_format_changed
= 0;
431 ao
->i_stream_index
= -1;
433 ao
->b_changed_mixing
= 0;
435 if (device_id
== 0) {
436 /* Find the ID of the default Device. */
437 err
= GetAudioProperty(kAudioObjectSystemObject
,
438 kAudioHardwarePropertyDefaultOutputDevice
,
439 sizeof(UInt32
), &devid_def
);
442 ao_msg(MSGT_AO
, MSGL_WARN
, "could not get default audio device: [%4.4s]\n", (char *)&err
);
446 devid_def
= device_id
;
449 /* Retrieve the name of the device. */
450 err
= GetAudioPropertyString(devid_def
,
451 kAudioObjectPropertyName
,
455 ao_msg(MSGT_AO
, MSGL_WARN
, "could not get default audio device name: [%4.4s]\n", (char *)&err
);
459 ao_msg(MSGT_AO
,MSGL_V
, "got audio output device ID: %"PRIu32
" Name: %s\n", devid_def
, psz_name
);
461 /* Probe whether device support S/PDIF stream output if input is AC3 stream. */
462 if (AF_FORMAT_IS_AC3(format
)) {
463 if (AudioDeviceSupportsDigital(devid_def
))
465 ao
->b_supports_digital
= 1;
467 ao_msg(MSGT_AO
, MSGL_V
,
468 "probe default audio output device about support for digital s/pdif output: %d\n",
469 ao
->b_supports_digital
);
474 // Save selected device id
475 ao
->i_selected_dev
= devid_def
;
477 // Build Description for the input format
478 inDesc
.mSampleRate
=rate
;
479 inDesc
.mFormatID
=ao
->b_supports_digital
? kAudioFormat60958AC3
: kAudioFormatLinearPCM
;
480 inDesc
.mChannelsPerFrame
=channels
;
481 inDesc
.mBitsPerChannel
=af_fmt2bits(format
);
483 if((format
&AF_FORMAT_POINT_MASK
)==AF_FORMAT_F
) {
485 inDesc
.mFormatFlags
= kAudioFormatFlagIsFloat
|kAudioFormatFlagIsPacked
;
487 else if((format
&AF_FORMAT_SIGN_MASK
)==AF_FORMAT_SI
) {
489 inDesc
.mFormatFlags
= kAudioFormatFlagIsSignedInteger
|kAudioFormatFlagIsPacked
;
493 inDesc
.mFormatFlags
= kAudioFormatFlagIsPacked
;
495 if ((format
& AF_FORMAT_END_MASK
) == AF_FORMAT_BE
)
496 inDesc
.mFormatFlags
|= kAudioFormatFlagIsBigEndian
;
498 inDesc
.mFramesPerPacket
= 1;
499 ao
->packetSize
= inDesc
.mBytesPerPacket
= inDesc
.mBytesPerFrame
= inDesc
.mFramesPerPacket
*channels
*(inDesc
.mBitsPerChannel
/8);
500 print_format(MSGL_V
, "source:",&inDesc
);
502 if (ao
->b_supports_digital
)
505 err
= GetAudioProperty(ao
->i_selected_dev
,
506 kAudioDevicePropertyDeviceIsAlive
,
507 sizeof(UInt32
), &b_alive
);
509 ao_msg(MSGT_AO
, MSGL_WARN
, "could not check whether device is alive: [%4.4s]\n", (char *)&err
);
511 ao_msg(MSGT_AO
, MSGL_WARN
, "device is not alive\n" );
513 /* S/PDIF output need device in HogMode. */
514 err
= GetAudioProperty(ao
->i_selected_dev
,
515 kAudioDevicePropertyHogMode
,
516 sizeof(pid_t
), &ao
->i_hog_pid
);
519 /* This is not a fatal error. Some drivers simply don't support this property. */
520 ao_msg(MSGT_AO
, MSGL_WARN
, "could not check whether device is hogged: [%4.4s]\n",
525 if (ao
->i_hog_pid
!= -1 && ao
->i_hog_pid
!= getpid())
527 ao_msg(MSGT_AO
, MSGL_WARN
, "Selected audio device is exclusively in use by another program.\n" );
530 ao
->stream_format
= inDesc
;
534 /* original analog output code */
535 desc
.componentType
= kAudioUnitType_Output
;
536 desc
.componentSubType
= (device_id
== 0) ? kAudioUnitSubType_DefaultOutput
: kAudioUnitSubType_HALOutput
;
537 desc
.componentManufacturer
= kAudioUnitManufacturer_Apple
;
538 desc
.componentFlags
= 0;
539 desc
.componentFlagsMask
= 0;
541 comp
= FindNextComponent(NULL
, &desc
); //Finds an component that meets the desc spec's
543 ao_msg(MSGT_AO
, MSGL_WARN
, "Unable to find Output Unit component\n");
547 err
= OpenAComponent(comp
, &(ao
->theOutputUnit
)); //gains access to the services provided by the component
549 ao_msg(MSGT_AO
, MSGL_WARN
, "Unable to open Output Unit component: [%4.4s]\n", (char *)&err
);
553 // Initialize AudioUnit
554 err
= AudioUnitInitialize(ao
->theOutputUnit
);
556 ao_msg(MSGT_AO
, MSGL_WARN
, "Unable to initialize Output Unit component: [%4.4s]\n", (char *)&err
);
560 size
= sizeof(AudioStreamBasicDescription
);
561 err
= AudioUnitSetProperty(ao
->theOutputUnit
, kAudioUnitProperty_StreamFormat
, kAudioUnitScope_Input
, 0, &inDesc
, size
);
564 ao_msg(MSGT_AO
, MSGL_WARN
, "Unable to set the input format: [%4.4s]\n", (char *)&err
);
568 size
= sizeof(UInt32
);
569 err
= AudioUnitGetProperty(ao
->theOutputUnit
, kAudioDevicePropertyBufferSize
, kAudioUnitScope_Input
, 0, &maxFrames
, &size
);
573 ao_msg(MSGT_AO
,MSGL_WARN
, "AudioUnitGetProperty returned [%4.4s] when getting kAudioDevicePropertyBufferSize\n", (char *)&err
);
577 //Set the Current Device to the Default Output Unit.
578 err
= AudioUnitSetProperty(ao
->theOutputUnit
, kAudioOutputUnitProperty_CurrentDevice
, kAudioUnitScope_Global
, 0, &ao
->i_selected_dev
, sizeof(ao
->i_selected_dev
));
580 ao
->chunk_size
= maxFrames
;//*inDesc.mBytesPerFrame;
582 ao_data
.samplerate
= inDesc
.mSampleRate
;
583 ao_data
.channels
= inDesc
.mChannelsPerFrame
;
584 ao_data
.bps
= ao_data
.samplerate
* inDesc
.mBytesPerFrame
;
585 ao_data
.outburst
= ao
->chunk_size
;
586 ao_data
.buffersize
= ao_data
.bps
;
588 ao
->num_chunks
= (ao_data
.bps
+ao
->chunk_size
-1)/ao
->chunk_size
;
589 ao
->buffer_len
= ao
->num_chunks
* ao
->chunk_size
;
590 ao
->buffer
= av_fifo_alloc(ao
->buffer_len
);
592 ao_msg(MSGT_AO
,MSGL_V
, "using %5d chunks of %d bytes (buffer len %d bytes)\n", (int)ao
->num_chunks
, (int)ao
->chunk_size
, (int)ao
->buffer_len
);
594 renderCallback
.inputProc
= theRenderProc
;
595 renderCallback
.inputProcRefCon
= 0;
596 err
= AudioUnitSetProperty(ao
->theOutputUnit
, kAudioUnitProperty_SetRenderCallback
, kAudioUnitScope_Input
, 0, &renderCallback
, sizeof(AURenderCallbackStruct
));
598 ao_msg(MSGT_AO
, MSGL_WARN
, "Unable to set the render callback: [%4.4s]\n", (char *)&err
);
607 AudioUnitUninitialize(ao
->theOutputUnit
);
609 CloseComponent(ao
->theOutputUnit
);
611 av_fifo_free(ao
->buffer
);
614 return CONTROL_FALSE
;
617 /*****************************************************************************
618 * Setup a encoded digital stream (SPDIF)
619 *****************************************************************************/
620 static int OpenSPDIF(void)
622 OSStatus err
= noErr
;
623 UInt32 i_param_size
, b_mix
= 0;
624 Boolean b_writeable
= 0;
625 AudioStreamID
*p_streams
= NULL
;
626 int i
, i_streams
= 0;
627 AudioObjectPropertyAddress property_address
;
629 /* Start doing the SPDIF setup process. */
632 /* Hog the device. */
633 ao
->i_hog_pid
= getpid() ;
635 err
= SetAudioProperty(ao
->i_selected_dev
,
636 kAudioDevicePropertyHogMode
,
637 sizeof(ao
->i_hog_pid
), &ao
->i_hog_pid
);
640 ao_msg(MSGT_AO
, MSGL_WARN
, "failed to set hogmode: [%4.4s]\n", (char *)&err
);
645 /* Set mixable to false if we are allowed to. */
646 err
= IsAudioPropertySettable(ao
->i_selected_dev
,
647 kAudioDevicePropertySupportsMixing
,
649 err
= GetAudioProperty(ao
->i_selected_dev
,
650 kAudioDevicePropertySupportsMixing
,
651 sizeof(UInt32
), &b_mix
);
652 if (err
!= noErr
&& b_writeable
)
655 err
= SetAudioProperty(ao
->i_selected_dev
,
656 kAudioDevicePropertySupportsMixing
,
657 sizeof(UInt32
), &b_mix
);
658 ao
->b_changed_mixing
= 1;
662 ao_msg(MSGT_AO
, MSGL_WARN
, "failed to set mixmode: [%4.4s]\n", (char *)&err
);
666 /* Get a list of all the streams on this device. */
667 i_param_size
= GetAudioPropertyArray(ao
->i_selected_dev
,
668 kAudioDevicePropertyStreams
,
669 kAudioDevicePropertyScopeOutput
,
670 (void **)&p_streams
);
673 ao_msg(MSGT_AO
, MSGL_WARN
, "could not get number of streams.\n");
677 i_streams
= i_param_size
/ sizeof(AudioStreamID
);
679 ao_msg(MSGT_AO
, MSGL_V
, "current device stream number: %d\n", i_streams
);
681 for (i
= 0; i
< i_streams
&& ao
->i_stream_index
< 0; ++i
)
683 /* Find a stream with a cac3 stream. */
684 AudioStreamBasicDescription
*p_format_list
= NULL
;
685 int i_formats
= 0, j
= 0, b_digital
= 0;
687 i_param_size
= GetGlobalAudioPropertyArray(p_streams
[i
],
688 kAudioStreamPropertyPhysicalFormats
,
689 (void **)&p_format_list
);
692 ao_msg(MSGT_AO
, MSGL_WARN
,
693 "Could not get number of stream formats.\n");
697 i_formats
= i_param_size
/ sizeof(AudioStreamBasicDescription
);
699 /* Check if one of the supported formats is a digital format. */
700 for (j
= 0; j
< i_formats
; ++j
)
702 if (p_format_list
[j
].mFormatID
== 'IAC3' ||
703 p_format_list
[j
].mFormatID
== kAudioFormat60958AC3
)
712 /* If this stream supports a digital (cac3) format, then set it. */
713 int i_requested_rate_format
= -1;
714 int i_current_rate_format
= -1;
715 int i_backup_rate_format
= -1;
717 ao
->i_stream_id
= p_streams
[i
];
718 ao
->i_stream_index
= i
;
720 if (ao
->b_revert
== 0)
722 /* Retrieve the original format of this stream first if not done so already. */
723 err
= GetAudioProperty(ao
->i_stream_id
,
724 kAudioStreamPropertyPhysicalFormat
,
725 sizeof(ao
->sfmt_revert
), &ao
->sfmt_revert
);
728 ao_msg(MSGT_AO
, MSGL_WARN
,
729 "Could not retrieve the original stream format: [%4.4s]\n",
737 for (j
= 0; j
< i_formats
; ++j
)
738 if (p_format_list
[j
].mFormatID
== 'IAC3' ||
739 p_format_list
[j
].mFormatID
== kAudioFormat60958AC3
)
741 if (p_format_list
[j
].mSampleRate
== ao
->stream_format
.mSampleRate
)
743 i_requested_rate_format
= j
;
746 if (p_format_list
[j
].mSampleRate
== ao
->sfmt_revert
.mSampleRate
)
747 i_current_rate_format
= j
;
748 else if (i_backup_rate_format
< 0 || p_format_list
[j
].mSampleRate
> p_format_list
[i_backup_rate_format
].mSampleRate
)
749 i_backup_rate_format
= j
;
752 if (i_requested_rate_format
>= 0) /* We prefer to output at the samplerate of the original audio. */
753 ao
->stream_format
= p_format_list
[i_requested_rate_format
];
754 else if (i_current_rate_format
>= 0) /* If not possible, we will try to use the current samplerate of the device. */
755 ao
->stream_format
= p_format_list
[i_current_rate_format
];
756 else ao
->stream_format
= p_format_list
[i_backup_rate_format
]; /* And if we have to, any digital format will be just fine (highest rate possible). */
762 if (ao
->i_stream_index
< 0)
764 ao_msg(MSGT_AO
, MSGL_WARN
,
765 "Cannot find any digital output stream format when OpenSPDIF().\n");
769 print_format(MSGL_V
, "original stream format:", &ao
->sfmt_revert
);
771 if (!AudioStreamChangeFormat(ao
->i_stream_id
, ao
->stream_format
))
774 property_address
.mSelector
= kAudioDevicePropertyDeviceHasChanged
;
775 property_address
.mScope
= kAudioObjectPropertyScopeGlobal
;
776 property_address
.mElement
= kAudioObjectPropertyElementMaster
;
778 err
= AudioObjectAddPropertyListener(ao
->i_selected_dev
,
783 ao_msg(MSGT_AO
, MSGL_WARN
, "AudioDeviceAddPropertyListener for kAudioDevicePropertyDeviceHasChanged failed: [%4.4s]\n", (char *)&err
);
786 /* FIXME: If output stream is not native byte-order, we need change endian somewhere. */
787 /* Although there's no such case reported. */
789 if (!(ao
->stream_format
.mFormatFlags
& kAudioFormatFlagIsBigEndian
))
791 /* tell mplayer that we need a byteswap on AC3 streams, */
792 if (ao
->stream_format
.mFormatID
& kAudioFormat60958AC3
)
793 ao_data
.format
= AF_FORMAT_AC3_LE
;
795 if (ao
->stream_format
.mFormatFlags
& kAudioFormatFlagIsBigEndian
)
797 ao_msg(MSGT_AO
, MSGL_WARN
,
798 "Output stream has non-native byte order, digital output may fail.\n");
800 /* For ac3/dts, just use packet size 6144 bytes as chunk size. */
801 ao
->chunk_size
= ao
->stream_format
.mBytesPerPacket
;
803 ao_data
.samplerate
= ao
->stream_format
.mSampleRate
;
804 ao_data
.channels
= ao
->stream_format
.mChannelsPerFrame
;
805 ao_data
.bps
= ao_data
.samplerate
* (ao
->stream_format
.mBytesPerPacket
/ao
->stream_format
.mFramesPerPacket
);
806 ao_data
.outburst
= ao
->chunk_size
;
807 ao_data
.buffersize
= ao_data
.bps
;
809 ao
->num_chunks
= (ao_data
.bps
+ao
->chunk_size
-1)/ao
->chunk_size
;
810 ao
->buffer_len
= ao
->num_chunks
* ao
->chunk_size
;
811 ao
->buffer
= av_fifo_alloc(ao
->buffer_len
);
813 ao_msg(MSGT_AO
,MSGL_V
, "using %5d chunks of %d bytes (buffer len %d bytes)\n", (int)ao
->num_chunks
, (int)ao
->chunk_size
, (int)ao
->buffer_len
);
816 /* Create IOProc callback. */
817 err
= AudioDeviceCreateIOProcID(ao
->i_selected_dev
,
818 (AudioDeviceIOProc
)RenderCallbackSPDIF
,
820 &ao
->renderCallback
);
822 if (err
!= noErr
|| ao
->renderCallback
== NULL
)
824 ao_msg(MSGT_AO
, MSGL_WARN
, "AudioDeviceAddIOProc failed: [%4.4s]\n", (char *)&err
);
834 AudioStreamChangeFormat(ao
->i_stream_id
, ao
->sfmt_revert
);
836 if (ao
->b_changed_mixing
&& ao
->sfmt_revert
.mFormatID
!= kAudioFormat60958AC3
)
839 err
= SetAudioProperty(ao
->i_selected_dev
,
840 kAudioDevicePropertySupportsMixing
,
841 sizeof(int), &b_mix
);
843 ao_msg(MSGT_AO
, MSGL_WARN
, "failed to set mixmode: [%4.4s]\n",
846 if (ao
->i_hog_pid
== getpid())
849 err
= SetAudioProperty(ao
->i_selected_dev
,
850 kAudioDevicePropertyHogMode
,
851 sizeof(ao
->i_hog_pid
), &ao
->i_hog_pid
);
853 ao_msg(MSGT_AO
, MSGL_WARN
, "Could not release hogmode: [%4.4s]\n",
856 av_fifo_free(ao
->buffer
);
859 return CONTROL_FALSE
;
862 /*****************************************************************************
863 * AudioDeviceSupportsDigital: Check i_dev_id for digital stream support.
864 *****************************************************************************/
865 static int AudioDeviceSupportsDigital( AudioDeviceID i_dev_id
)
867 UInt32 i_param_size
= 0;
868 AudioStreamID
*p_streams
= NULL
;
869 int i
= 0, i_streams
= 0;
870 int b_return
= CONTROL_FALSE
;
872 /* Retrieve all the output streams. */
873 i_param_size
= GetAudioPropertyArray(i_dev_id
,
874 kAudioDevicePropertyStreams
,
875 kAudioDevicePropertyScopeOutput
,
876 (void **)&p_streams
);
879 ao_msg(MSGT_AO
, MSGL_WARN
, "could not get number of streams.\n");
880 return CONTROL_FALSE
;
883 i_streams
= i_param_size
/ sizeof(AudioStreamID
);
885 for (i
= 0; i
< i_streams
; ++i
)
887 if (AudioStreamSupportsDigital(p_streams
[i
]))
888 b_return
= CONTROL_OK
;
895 /*****************************************************************************
896 * AudioStreamSupportsDigital: Check i_stream_id for digital stream support.
897 *****************************************************************************/
898 static int AudioStreamSupportsDigital( AudioStreamID i_stream_id
)
901 AudioStreamBasicDescription
*p_format_list
= NULL
;
902 int i
, i_formats
, b_return
= CONTROL_FALSE
;
904 /* Retrieve all the stream formats supported by each output stream. */
905 i_param_size
= GetGlobalAudioPropertyArray(i_stream_id
,
906 kAudioStreamPropertyPhysicalFormats
,
907 (void **)&p_format_list
);
910 ao_msg(MSGT_AO
, MSGL_WARN
, "Could not get number of stream formats.\n");
911 return CONTROL_FALSE
;
914 i_formats
= i_param_size
/ sizeof(AudioStreamBasicDescription
);
916 for (i
= 0; i
< i_formats
; ++i
)
918 print_format(MSGL_V
, "supported format:", &p_format_list
[i
]);
920 if (p_format_list
[i
].mFormatID
== 'IAC3' ||
921 p_format_list
[i
].mFormatID
== kAudioFormat60958AC3
)
922 b_return
= CONTROL_OK
;
929 /*****************************************************************************
930 * AudioStreamChangeFormat: Change i_stream_id to change_format
931 *****************************************************************************/
932 static int AudioStreamChangeFormat( AudioStreamID i_stream_id
, AudioStreamBasicDescription change_format
)
934 OSStatus err
= noErr
;
936 AudioObjectPropertyAddress property_address
;
938 static volatile int stream_format_changed
;
939 stream_format_changed
= 0;
941 print_format(MSGL_V
, "setting stream format:", &change_format
);
943 /* Install the callback. */
944 property_address
.mSelector
= kAudioStreamPropertyPhysicalFormat
;
945 property_address
.mScope
= kAudioObjectPropertyScopeGlobal
;
946 property_address
.mElement
= kAudioObjectPropertyElementMaster
;
948 err
= AudioObjectAddPropertyListener(i_stream_id
,
951 (void *)&stream_format_changed
);
954 ao_msg(MSGT_AO
, MSGL_WARN
, "AudioStreamAddPropertyListener failed: [%4.4s]\n", (char *)&err
);
955 return CONTROL_FALSE
;
958 /* Change the format. */
959 err
= SetAudioProperty(i_stream_id
,
960 kAudioStreamPropertyPhysicalFormat
,
961 sizeof(AudioStreamBasicDescription
), &change_format
);
964 ao_msg(MSGT_AO
, MSGL_WARN
, "could not set the stream format: [%4.4s]\n", (char *)&err
);
965 return CONTROL_FALSE
;
968 /* The AudioStreamSetProperty is not only asynchronious,
969 * it is also not Atomic, in its behaviour.
970 * Therefore we check 5 times before we really give up.
971 * FIXME: failing isn't actually implemented yet. */
972 for (i
= 0; i
< 5; ++i
)
974 AudioStreamBasicDescription actual_format
;
976 for (j
= 0; !stream_format_changed
&& j
< 50; ++j
)
978 if (stream_format_changed
)
979 stream_format_changed
= 0;
981 ao_msg(MSGT_AO
, MSGL_V
, "reached timeout\n" );
983 err
= GetAudioProperty(i_stream_id
,
984 kAudioStreamPropertyPhysicalFormat
,
985 sizeof(AudioStreamBasicDescription
), &actual_format
);
987 print_format(MSGL_V
, "actual format in use:", &actual_format
);
988 if (actual_format
.mSampleRate
== change_format
.mSampleRate
&&
989 actual_format
.mFormatID
== change_format
.mFormatID
&&
990 actual_format
.mFramesPerPacket
== change_format
.mFramesPerPacket
)
992 /* The right format is now active. */
995 /* We need to check again. */
998 /* Removing the property listener. */
999 err
= AudioObjectRemovePropertyListener(i_stream_id
,
1002 (void *)&stream_format_changed
);
1005 ao_msg(MSGT_AO
, MSGL_WARN
, "AudioStreamRemovePropertyListener failed: [%4.4s]\n", (char *)&err
);
1006 return CONTROL_FALSE
;
1009 return CONTROL_TRUE
;
1012 /*****************************************************************************
1013 * RenderCallbackSPDIF: callback for SPDIF audio output
1014 *****************************************************************************/
1015 static OSStatus
RenderCallbackSPDIF( AudioDeviceID inDevice
,
1016 const AudioTimeStamp
* inNow
,
1017 const void * inInputData
,
1018 const AudioTimeStamp
* inInputTime
,
1019 AudioBufferList
* outOutputData
,
1020 const AudioTimeStamp
* inOutputTime
,
1021 void * threadGlobals
)
1023 int amt
= av_fifo_size(ao
->buffer
);
1024 int req
= outOutputData
->mBuffers
[ao
->i_stream_index
].mDataByteSize
;
1029 read_buffer(ao
->b_muted
? NULL
: (unsigned char *)outOutputData
->mBuffers
[ao
->i_stream_index
].mData
, amt
);
1035 static int play(void* output_samples
,int num_bytes
,int flags
)
1037 int wrote
, b_digital
;
1040 // Check whether we need to reset the digital output stream.
1041 if (ao
->b_digital
&& ao
->b_stream_format_changed
)
1043 ao
->b_stream_format_changed
= 0;
1044 b_digital
= AudioStreamSupportsDigital(ao
->i_stream_id
);
1047 /* Current stream supports digital format output, let's set it. */
1048 ao_msg(MSGT_AO
, MSGL_V
,
1049 "Detected current stream supports digital, try to restore digital output...\n");
1051 if (!AudioStreamChangeFormat(ao
->i_stream_id
, ao
->stream_format
))
1053 ao_msg(MSGT_AO
, MSGL_WARN
, "Restoring digital output failed.\n");
1057 ao_msg(MSGT_AO
, MSGL_WARN
, "Restoring digital output succeeded.\n");
1062 ao_msg(MSGT_AO
, MSGL_V
, "Detected current stream does not support digital.\n");
1065 wrote
=write_buffer(output_samples
, num_bytes
);
1069 exit_reason
= CFRunLoopRunInMode(kCFRunLoopDefaultMode
, 0.01, true);
1070 } while (exit_reason
== kCFRunLoopRunHandledSource
);
1075 /* set variables and buffer to initial state */
1076 static void reset(void)
1079 av_fifo_reset(ao
->buffer
);
1083 /* return available space */
1084 static int get_space(void)
1086 return ao
->buffer_len
- av_fifo_size(ao
->buffer
);
1090 /* return delay until audio is played */
1091 static float get_delay(void)
1093 // inaccurate, should also contain the data buffered e.g. by the OS
1094 return (float)av_fifo_size(ao
->buffer
)/(float)ao_data
.bps
;
1098 /* unload plugin and deregister from coreaudio */
1099 static void uninit(int immed
)
1101 OSStatus err
= noErr
;
1104 long long timeleft
=(1000000LL*av_fifo_size(ao
->buffer
))/ao_data
.bps
;
1105 ao_msg(MSGT_AO
,MSGL_DBG2
, "%d bytes left @%d bps (%d usec)\n", av_fifo_size(ao
->buffer
), ao_data
.bps
, (int)timeleft
);
1106 usec_sleep((int)timeleft
);
1109 if (!ao
->b_digital
) {
1110 AudioOutputUnitStop(ao
->theOutputUnit
);
1111 AudioUnitUninitialize(ao
->theOutputUnit
);
1112 CloseComponent(ao
->theOutputUnit
);
1116 err
= AudioDeviceStop(ao
->i_selected_dev
, ao
->renderCallback
);
1118 ao_msg(MSGT_AO
, MSGL_WARN
, "AudioDeviceStop failed: [%4.4s]\n", (char *)&err
);
1120 /* Remove IOProc callback. */
1121 err
= AudioDeviceDestroyIOProcID(ao
->i_selected_dev
, ao
->renderCallback
);
1123 ao_msg(MSGT_AO
, MSGL_WARN
, "AudioDeviceRemoveIOProc failed: [%4.4s]\n", (char *)&err
);
1126 AudioStreamChangeFormat(ao
->i_stream_id
, ao
->sfmt_revert
);
1128 if (ao
->b_changed_mixing
&& ao
->sfmt_revert
.mFormatID
!= kAudioFormat60958AC3
)
1131 Boolean b_writeable
;
1132 /* Revert mixable to true if we are allowed to. */
1133 err
= IsAudioPropertySettable(ao
->i_selected_dev
,
1134 kAudioDevicePropertySupportsMixing
,
1136 err
= GetAudioProperty(ao
->i_selected_dev
,
1137 kAudioDevicePropertySupportsMixing
,
1138 sizeof(UInt32
), &b_mix
);
1139 if (err
!= noErr
&& b_writeable
)
1142 err
= SetAudioProperty(ao
->i_selected_dev
,
1143 kAudioDevicePropertySupportsMixing
,
1144 sizeof(UInt32
), &b_mix
);
1147 ao_msg(MSGT_AO
, MSGL_WARN
, "failed to set mixmode: [%4.4s]\n", (char *)&err
);
1149 if (ao
->i_hog_pid
== getpid())
1152 err
= SetAudioProperty(ao
->i_selected_dev
,
1153 kAudioDevicePropertyHogMode
,
1154 sizeof(ao
->i_hog_pid
), &ao
->i_hog_pid
);
1155 if (err
!= noErr
) ao_msg(MSGT_AO
, MSGL_WARN
, "Could not release hogmode: [%4.4s]\n", (char *)&err
);
1159 av_fifo_free(ao
->buffer
);
1165 /* stop playing, keep buffers (for pause) */
1166 static void audio_pause(void)
1170 /* Stop callback. */
1173 err
=AudioOutputUnitStop(ao
->theOutputUnit
);
1175 ao_msg(MSGT_AO
,MSGL_WARN
, "AudioOutputUnitStop returned [%4.4s]\n", (char *)&err
);
1179 err
= AudioDeviceStop(ao
->i_selected_dev
, ao
->renderCallback
);
1181 ao_msg(MSGT_AO
, MSGL_WARN
, "AudioDeviceStop failed: [%4.4s]\n", (char *)&err
);
1187 /* resume playing, after audio_pause() */
1188 static void audio_resume(void)
1195 /* Start callback. */
1198 err
= AudioOutputUnitStart(ao
->theOutputUnit
);
1200 ao_msg(MSGT_AO
,MSGL_WARN
, "AudioOutputUnitStart returned [%4.4s]\n", (char *)&err
);
1204 err
= AudioDeviceStart(ao
->i_selected_dev
, ao
->renderCallback
);
1206 ao_msg(MSGT_AO
, MSGL_WARN
, "AudioDeviceStart failed: [%4.4s]\n", (char *)&err
);
1211 /*****************************************************************************
1213 *****************************************************************************/
1214 static OSStatus
StreamListener( AudioObjectID inObjectID
,
1215 UInt32 inNumberAddresses
,
1216 const AudioObjectPropertyAddress inAddresses
[],
1217 void *inClientData
)
1219 for (int i
=0; i
< inNumberAddresses
; ++i
)
1221 if (inAddresses
[i
].mSelector
== kAudioStreamPropertyPhysicalFormat
) {
1222 ao_msg(MSGT_AO
, MSGL_WARN
, "got notify kAudioStreamPropertyPhysicalFormat changed.\n");
1224 *(volatile int *)inClientData
= 1;
1231 static OSStatus
DeviceListener( AudioObjectID inObjectID
,
1232 UInt32 inNumberAddresses
,
1233 const AudioObjectPropertyAddress inAddresses
[],
1234 void *inClientData
)
1236 for (int i
=0; i
< inNumberAddresses
; ++i
)
1238 if (inAddresses
[i
].mSelector
== kAudioDevicePropertyDeviceHasChanged
) {
1239 ao_msg(MSGT_AO
, MSGL_WARN
, "got notify kAudioDevicePropertyDeviceHasChanged.\n");
1240 ao
->b_stream_format_changed
= 1;