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/*
* GStreamer
* Copyright (C) 2012 Fluendo S.A. <support@fluendo.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef __GST_CORE_AUDIO_H__
#define __GST_CORE_AUDIO_H__
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <gst/gst.h>
#include <gst/audio/audio-channels.h>
#ifdef HAVE_IOS
#include <CoreAudio/CoreAudioTypes.h>
#define AudioDeviceID gint
#define kAudioDeviceUnknown 0
#else
#include <CoreAudio/CoreAudio.h>
#include <AudioToolbox/AudioToolbox.h>
#if MAC_OS_X_VERSION_MIN_REQUIRED < 1060
#include <CoreServices/CoreServices.h>
#define AudioComponentFindNext FindNextComponent
#define AudioComponentInstanceNew OpenAComponent
#define AudioComponentInstanceDispose CloseComponent
#define AudioComponent Component
#define AudioComponentDescription ComponentDescription
#endif
#endif
#include <AudioUnit/AudioUnit.h>
#include "gstosxaudioelement.h"
G_BEGIN_DECLS
#define GST_TYPE_CORE_AUDIO \
(gst_core_audio_get_type())
#define GST_CORE_AUDIO(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CORE_AUDIO,GstCoreAudio))
#define GST_CORE_AUDIO_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CORE_AUDIO,GstCoreAudioClass))
#define GST_CORE_AUDIO_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_CORE_AUDIO,GstCoreAudioClass))
#define GST_IS_CORE_AUDIO(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CORE_AUDIO))
#define GST_IS_CORE_AUDIO_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CORE_AUDIO))
/* TODO: Consider raising to 64 */
#define GST_OSX_AUDIO_MAX_CHANNEL (9)
#define CORE_AUDIO_FORMAT_IS_SPDIF(f) ((f).mFormat.mFormatID == 'IAC3' || (f).mFormat.mFormatID == 'iac3' || (f).mFormat.mFormatID == kAudioFormat60958AC3 || (f).mFormat.mFormatID == kAudioFormatAC3)
#define CORE_AUDIO_FORMAT "FormatID: %" GST_FOURCC_FORMAT " rate: %f flags: 0x%x BytesPerPacket: %u FramesPerPacket: %u BytesPerFrame: %u ChannelsPerFrame: %u BitsPerChannel: %u"
#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
#define CORE_AUDIO_INNER_SCOPE(core_audio) ((core_audio)->is_src ? kAudioUnitScope_Output : kAudioUnitScope_Input)
#define CORE_AUDIO_OUTER_SCOPE(core_audio) ((core_audio)->is_src ? kAudioUnitScope_Input : kAudioUnitScope_Output)
#define CORE_AUDIO_ELEMENT(core_audio) ((core_audio)->is_src ? 1 : 0)
typedef struct _GstCoreAudio GstCoreAudio;
typedef struct _GstCoreAudioClass GstCoreAudioClass;
struct _GstCoreAudio
{
GObject object;
GstObject *osxbuf;
GstOsxAudioElementInterface *element;
gboolean is_src;
gboolean is_passthrough;
AudioDeviceID device_id;
gboolean cached_caps_valid; /* thread-safe flag */
GstCaps *cached_caps;
gint stream_idx;
gboolean io_proc_active;
gboolean io_proc_needs_deactivation;
/* For LPCM in/out */
AudioUnit audiounit;
UInt32 recBufferSize; /* AudioUnitRender clobbers mDataByteSize */
AudioBufferList *recBufferList;
#ifndef HAVE_IOS
/* For SPDIF out */
pid_t hog_pid;
gboolean disabled_mixing;
AudioStreamID stream_id;
gboolean revert_format;
AudioStreamBasicDescription original_format, stream_format;
AudioDeviceIOProcID procID;
#endif
};
struct _GstCoreAudioClass
{
GObjectClass parent_class;
};
GType gst_core_audio_get_type (void);
void gst_core_audio_init_debug (void);
GstCoreAudio * gst_core_audio_new (GstObject *osxbuf);
gboolean gst_core_audio_open (GstCoreAudio *core_audio);
gboolean gst_core_audio_close (GstCoreAudio *core_audio);
gboolean gst_core_audio_initialize (GstCoreAudio *core_audio,
AudioStreamBasicDescription format,
GstCaps *caps,
gboolean is_passthrough);
void gst_core_audio_uninitialize (GstCoreAudio *core_audio);
gboolean gst_core_audio_start_processing (GstCoreAudio *core_audio);
gboolean gst_core_audio_pause_processing (GstCoreAudio *core_audio);
gboolean gst_core_audio_stop_processing (GstCoreAudio *core_audio);
gboolean gst_core_audio_get_samples_and_latency (GstCoreAudio * core_audio,
gdouble rate,
guint *samples,
gdouble *latency);
void gst_core_audio_set_volume (GstCoreAudio *core_audio,
gfloat volume);
gboolean gst_core_audio_audio_device_is_spdif_avail (AudioDeviceID device_id);
gboolean gst_core_audio_select_device (GstCoreAudio * core_audio);
GstCaps *
gst_core_audio_probe_caps (GstCoreAudio * core_audio, GstCaps * in_caps);
AudioChannelLayout *
gst_core_audio_get_channel_layout (GstCoreAudio * core_audio, gboolean outer);
gboolean gst_core_audio_parse_channel_layout (AudioChannelLayout * layout,
guint * channels, guint64 * channel_mask, GstAudioChannelPosition * pos);
GstCaps * gst_core_audio_asbd_to_caps (AudioStreamBasicDescription * asbd,
AudioChannelLayout * layout);
G_END_DECLS
#endif /* __GST_CORE_AUDIO_H__ */
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