mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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f5d2ea76b4
Set the BufferFrame size in CoreAudio so it will deliver data in ringbuffer segment units when recording. Otherwise, CoreAudio will provide data in whatever granularity it wants, with no relationship to the requested latency-time. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5140>
167 lines
6.3 KiB
C
167 lines
6.3 KiB
C
/*
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* GStreamer
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* Copyright (C) 2012 Fluendo S.A. <support@fluendo.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef __GST_CORE_AUDIO_H__
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#define __GST_CORE_AUDIO_H__
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <gst/gst.h>
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#include <gst/audio/audio-channels.h>
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#ifdef HAVE_IOS
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#include <CoreAudio/CoreAudioTypes.h>
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#define AudioDeviceID gint
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#define kAudioDeviceUnknown 0
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#else
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#include <CoreAudio/CoreAudio.h>
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#include <AudioToolbox/AudioToolbox.h>
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#if MAC_OS_X_VERSION_MIN_REQUIRED < 1060
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#include <CoreServices/CoreServices.h>
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#define AudioComponentFindNext FindNextComponent
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#define AudioComponentInstanceNew OpenAComponent
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#define AudioComponentInstanceDispose CloseComponent
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#define AudioComponent Component
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#define AudioComponentDescription ComponentDescription
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#endif
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#endif
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#include <AudioUnit/AudioUnit.h>
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#include "gstosxaudioelement.h"
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G_BEGIN_DECLS
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#define GST_TYPE_CORE_AUDIO \
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(gst_core_audio_get_type())
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#define GST_CORE_AUDIO(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CORE_AUDIO,GstCoreAudio))
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#define GST_CORE_AUDIO_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CORE_AUDIO,GstCoreAudioClass))
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#define GST_CORE_AUDIO_GET_CLASS(obj) \
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(G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_CORE_AUDIO,GstCoreAudioClass))
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#define GST_IS_CORE_AUDIO(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CORE_AUDIO))
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#define GST_IS_CORE_AUDIO_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CORE_AUDIO))
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#define GST_OSX_AUDIO_MAX_CHANNEL (64)
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#define CORE_AUDIO_FORMAT_IS_SPDIF(f) ((f).mFormat.mFormatID == 'IAC3' || (f).mFormat.mFormatID == 'iac3' || (f).mFormat.mFormatID == kAudioFormat60958AC3 || (f).mFormat.mFormatID == kAudioFormatAC3)
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#define CORE_AUDIO_FORMAT "FormatID: %" GST_FOURCC_FORMAT " rate: %f flags: 0x%x BytesPerPacket: %u FramesPerPacket: %u BytesPerFrame: %u ChannelsPerFrame: %u BitsPerChannel: %u"
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#define CORE_AUDIO_FORMAT_ARGS(f) GST_FOURCC_ARGS((unsigned int)(f).mFormatID),(f).mSampleRate,(unsigned int)(f).mFormatFlags,(unsigned int)(f).mBytesPerPacket,(unsigned int)(f).mFramesPerPacket,(unsigned int)(f).mBytesPerFrame,(unsigned int)(f).mChannelsPerFrame,(unsigned int)(f).mBitsPerChannel
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#define CORE_AUDIO_INNER_SCOPE(core_audio) ((core_audio)->is_src ? kAudioUnitScope_Output : kAudioUnitScope_Input)
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#define CORE_AUDIO_OUTER_SCOPE(core_audio) ((core_audio)->is_src ? kAudioUnitScope_Input : kAudioUnitScope_Output)
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#define CORE_AUDIO_ELEMENT(core_audio) ((core_audio)->is_src ? 1 : 0)
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typedef struct _GstCoreAudio GstCoreAudio;
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typedef struct _GstCoreAudioClass GstCoreAudioClass;
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struct _GstCoreAudio
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{
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GObject object;
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GstObject *osxbuf;
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GstOsxAudioElementInterface *element;
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gboolean is_src;
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gboolean is_passthrough;
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AudioDeviceID device_id;
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gboolean cached_caps_valid; /* thread-safe flag */
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GstCaps *cached_caps;
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gint stream_idx;
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gboolean io_proc_active;
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gboolean io_proc_needs_deactivation;
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/* For LPCM in/out */
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AudioUnit audiounit;
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UInt32 recBufferSize; /* AudioUnitRender clobbers mDataByteSize */
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AudioBufferList *recBufferList;
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#ifndef HAVE_IOS
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/* For SPDIF out */
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pid_t hog_pid;
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gboolean disabled_mixing;
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AudioStreamID stream_id;
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gboolean revert_format;
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AudioStreamBasicDescription original_format, stream_format;
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AudioDeviceIOProcID procID;
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#endif
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};
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struct _GstCoreAudioClass
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{
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GObjectClass parent_class;
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};
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GType gst_core_audio_get_type (void);
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void gst_core_audio_init_debug (void);
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GstCoreAudio * gst_core_audio_new (GstObject *osxbuf);
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gboolean gst_core_audio_open (GstCoreAudio *core_audio);
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gboolean gst_core_audio_close (GstCoreAudio *core_audio);
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gboolean gst_core_audio_initialize (GstCoreAudio *core_audio,
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AudioStreamBasicDescription format,
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GstCaps *caps,
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guint32 frames_per_packet,
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gboolean is_passthrough);
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void gst_core_audio_uninitialize (GstCoreAudio *core_audio);
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gboolean gst_core_audio_start_processing (GstCoreAudio *core_audio);
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gboolean gst_core_audio_pause_processing (GstCoreAudio *core_audio);
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gboolean gst_core_audio_stop_processing (GstCoreAudio *core_audio);
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gboolean gst_core_audio_get_samples_and_latency (GstCoreAudio * core_audio,
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gdouble rate,
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guint *samples,
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gdouble *latency);
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void gst_core_audio_set_volume (GstCoreAudio *core_audio,
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gfloat volume);
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gboolean gst_core_audio_audio_device_is_spdif_avail (AudioDeviceID device_id);
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gboolean gst_core_audio_select_device (GstCoreAudio * core_audio);
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GstCaps *
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gst_core_audio_probe_caps (GstCoreAudio * core_audio, GstCaps * in_caps);
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AudioChannelLayout *
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gst_core_audio_get_channel_layout (GstCoreAudio * core_audio, gboolean outer);
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gboolean gst_core_audio_parse_channel_layout (AudioChannelLayout * layout,
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guint * channels, guint64 * channel_mask, GstAudioChannelPosition * pos);
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GstCaps * gst_core_audio_asbd_to_caps (AudioStreamBasicDescription * asbd,
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AudioChannelLayout * layout);
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G_END_DECLS
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#endif /* __GST_CORE_AUDIO_H__ */
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