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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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e9802f5f41
Adds the `atenc` element capable of encoding AAC-LC audio, using the AudioToolbox framework. It's able to encode up to 7.1 channel configurations. Comes with basic knobs for rate control (bitrate for CBR, quality for VBR). Support for more profiles (LD, HE-AAC) should be simple, but is not included here because of bugs with parsing of the AudioSpecificConfig. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6254>
69 lines
3 KiB
C
69 lines
3 KiB
C
/*
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* GStreamer
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* Copyright (C) 2012-2013 Fluendo S.A. <support@fluendo.com>
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* Authors: Josep Torra Vallès <josep@fluendo.com>
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* Andoni Morales Alastruey <amorales@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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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*/
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#pragma once
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#include "gstosxcoreaudio.h"
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#include <gst/audio/audio-channels.h>
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typedef struct
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{
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GMutex lock;
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GCond cond;
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} PropertyMutex;
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gboolean gst_core_audio_bind_device (GstCoreAudio *core_audio);
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void gst_core_audio_dump_channel_layout (AudioChannelLayout * channel_layout);
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void gst_core_audio_remove_render_callback (GstCoreAudio * core_audio);
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gboolean gst_core_audio_io_proc_start (GstCoreAudio * core_audio);
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gboolean gst_core_audio_io_proc_stop (GstCoreAudio * core_audio);
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AudioBufferList * buffer_list_alloc (UInt32 channels, UInt32 size, gboolean interleaved);
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void buffer_list_free (AudioBufferList * list);
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gboolean gst_core_audio_set_format (GstCoreAudio * core_audio,
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AudioStreamBasicDescription format);
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gboolean gst_core_audio_set_channel_layout (GstCoreAudio * core_audio,
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gint channels, GstCaps * caps);
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gboolean gst_core_audio_open_device (GstCoreAudio *core_audio,
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OSType sub_type,
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const gchar *adesc);
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OSStatus gst_core_audio_render_notify (GstCoreAudio * core_audio,
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AudioUnitRenderActionFlags * ioActionFlags,
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const AudioTimeStamp * inTimeStamp,
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unsigned int inBusNumber,
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unsigned int inNumberFrames,
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AudioBufferList * ioData);
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AudioChannelLabel gst_audio_channel_position_to_core_audio (GstAudioChannelPosition position, int channel);
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GstAudioChannelPosition gst_core_audio_channel_label_to_gst (AudioChannelLabel label, int channel, gboolean warn);
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