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552 lines
18 KiB
C
552 lines
18 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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#include "gstosxcoreaudiocommon.h"
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void
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gst_core_audio_remove_render_callback (GstCoreAudio * core_audio)
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{
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AURenderCallbackStruct input;
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OSStatus status;
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/* Deactivate the render callback by calling SetRenderCallback
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* with a NULL inputProc.
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*/
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input.inputProc = NULL;
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input.inputProcRefCon = NULL;
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status = AudioUnitSetProperty (core_audio->audiounit, kAudioUnitProperty_SetRenderCallback, kAudioUnitScope_Global, 0, /* N/A for global */
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&input, sizeof (input));
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if (status) {
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GST_WARNING_OBJECT (core_audio->osxbuf,
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"Failed to remove render callback %d", (int) status);
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}
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/* Remove the RenderNotify too */
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status = AudioUnitRemoveRenderNotify (core_audio->audiounit,
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(AURenderCallback) gst_core_audio_render_notify, core_audio);
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if (status) {
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GST_WARNING_OBJECT (core_audio->osxbuf,
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"Failed to remove render notify callback %d", (int) status);
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}
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/* We're deactivated.. */
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core_audio->io_proc_needs_deactivation = FALSE;
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core_audio->io_proc_active = FALSE;
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}
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OSStatus
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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, AudioBufferList * ioData)
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{
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/* Before rendering a frame, we get the PreRender notification.
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* Here, we detach the RenderCallback if we've been paused.
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*
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* This is necessary (rather than just directly detaching it) to
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* work around some thread-safety issues in CoreAudio
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*/
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if ((*ioActionFlags) & kAudioUnitRenderAction_PreRender) {
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if (core_audio->io_proc_needs_deactivation) {
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gst_core_audio_remove_render_callback (core_audio);
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}
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}
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return noErr;
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}
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gboolean
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gst_core_audio_io_proc_start (GstCoreAudio * core_audio)
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{
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OSStatus status;
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AURenderCallbackStruct input;
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AudioUnitPropertyID callback_type;
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GST_DEBUG_OBJECT (core_audio->osxbuf,
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"osx ring buffer start ioproc: %p device_id %lu",
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core_audio->element->io_proc, (gulong) core_audio->device_id);
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if (!core_audio->io_proc_active) {
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callback_type = core_audio->is_src ?
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kAudioOutputUnitProperty_SetInputCallback :
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kAudioUnitProperty_SetRenderCallback;
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input.inputProc = (AURenderCallback) core_audio->element->io_proc;
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input.inputProcRefCon = core_audio->osxbuf;
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status = AudioUnitSetProperty (core_audio->audiounit, callback_type, kAudioUnitScope_Global, 0, /* N/A for global */
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&input, sizeof (input));
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if (status) {
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GST_ERROR_OBJECT (core_audio->osxbuf,
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"AudioUnitSetProperty failed: %d", (int) status);
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return FALSE;
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}
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// ### does it make sense to do this notify stuff for input mode?
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status = AudioUnitAddRenderNotify (core_audio->audiounit,
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(AURenderCallback) gst_core_audio_render_notify, core_audio);
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if (status) {
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GST_ERROR_OBJECT (core_audio->osxbuf,
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"AudioUnitAddRenderNotify failed %d", (int) status);
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return FALSE;
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}
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core_audio->io_proc_active = TRUE;
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}
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core_audio->io_proc_needs_deactivation = FALSE;
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status = AudioOutputUnitStart (core_audio->audiounit);
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if (status) {
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GST_ERROR_OBJECT (core_audio->osxbuf, "AudioOutputUnitStart failed: %d",
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(int) status);
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return FALSE;
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}
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return TRUE;
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}
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gboolean
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gst_core_audio_io_proc_stop (GstCoreAudio * core_audio)
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{
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OSErr status;
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GST_DEBUG_OBJECT (core_audio->osxbuf,
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"osx ring buffer stop ioproc: %p device_id %lu",
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core_audio->element->io_proc, (gulong) core_audio->device_id);
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status = AudioOutputUnitStop (core_audio->audiounit);
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if (status) {
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GST_WARNING_OBJECT (core_audio->osxbuf,
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"AudioOutputUnitStop failed: %d", (int) status);
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}
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// ###: why is it okay to directly remove from here but not from pause() ?
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if (core_audio->io_proc_active) {
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gst_core_audio_remove_render_callback (core_audio);
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}
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return TRUE;
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}
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AudioBufferList *
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buffer_list_alloc (UInt32 channels, UInt32 size, gboolean interleaved)
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{
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AudioBufferList *list;
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gsize list_size;
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UInt32 num_buffers, n;
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num_buffers = interleaved ? 1 : channels;
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/* AudioBufferList member mBuffers is variable-length array */
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list_size = G_STRUCT_OFFSET (AudioBufferList, mBuffers[num_buffers]);
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list = (AudioBufferList *) g_malloc (list_size);
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list->mNumberBuffers = num_buffers;
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for (n = 0; n < num_buffers; ++n) {
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/* See http://lists.apple.com/archives/coreaudio-api/2015/Feb/msg00027.html */
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list->mBuffers[n].mNumberChannels = interleaved ? channels : 1;
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/* AudioUnitRender will keep overwriting mDataByteSize */
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list->mBuffers[n].mDataByteSize = size;
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list->mBuffers[n].mData = g_malloc (size);
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}
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return list;
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}
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void
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buffer_list_free (AudioBufferList * list)
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{
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UInt32 n;
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if (list == NULL)
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return;
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for (n = 0; n < list->mNumberBuffers; ++n) {
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g_free (list->mBuffers[n].mData);
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}
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g_free (list);
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}
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gboolean
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gst_core_audio_bind_device (GstCoreAudio * core_audio)
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{
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OSStatus status;
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/* Specify which device we're using. */
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GST_DEBUG_OBJECT (core_audio->osxbuf, "Bind AudioUnit to device %d",
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(int) core_audio->device_id);
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status = AudioUnitSetProperty (core_audio->audiounit,
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kAudioOutputUnitProperty_CurrentDevice, kAudioUnitScope_Global, 0,
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&core_audio->device_id, sizeof (AudioDeviceID));
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if (status) {
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GST_ERROR_OBJECT (core_audio->osxbuf, "Failed binding to device: %d",
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(int) status);
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goto audiounit_error;
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}
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return TRUE;
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audiounit_error:
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if (core_audio->recBufferList) {
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buffer_list_free (core_audio->recBufferList);
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core_audio->recBufferList = NULL;
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}
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return FALSE;
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}
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static gboolean
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_core_audio_set_property (GstCoreAudio * core_audio, AudioUnitPropertyID inID,
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void *inData, UInt32 inDataSize)
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{
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OSStatus status;
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AudioUnitScope scope;
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AudioUnitElement element;
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scope = CORE_AUDIO_INNER_SCOPE (core_audio);
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element = CORE_AUDIO_ELEMENT (core_audio);
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status =
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AudioUnitSetProperty (core_audio->audiounit, inID, scope, element, inData,
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inDataSize);
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if (status != noErr) {
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GST_WARNING_OBJECT (core_audio->osxbuf,
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"Failed to set Audio Unit property: %d", (int) status);
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return FALSE;;
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}
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return TRUE;
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}
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/* The AudioUnit must be uninitialized before calling this */
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gboolean
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gst_core_audio_set_channel_layout (GstCoreAudio * core_audio,
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gint channels, GstCaps * caps)
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{
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AudioChannelLayout *layout = NULL;
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gboolean ret;
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gsize layoutSize;
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gint i;
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GstStructure *structure;
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GstAudioChannelPosition positions[GST_OSX_AUDIO_MAX_CHANNEL];
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guint64 channel_mask;
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g_return_val_if_fail (channels <= GST_OSX_AUDIO_MAX_CHANNEL, FALSE);
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/* Determine the channel positions */
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structure = gst_caps_get_structure (caps, 0);
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channel_mask = 0;
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gst_structure_get (structure, "channel-mask", GST_TYPE_BITMASK, &channel_mask,
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NULL);
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if (channel_mask != 0)
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gst_audio_channel_positions_from_mask (channels, channel_mask, positions);
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/* AudioChannelLayout member mChannelDescriptions is variable-length array */
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layoutSize =
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G_STRUCT_OFFSET (AudioChannelLayout, mChannelDescriptions[channels]);
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layout = g_malloc (layoutSize);
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/* Fill out the AudioChannelLayout */
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layout->mChannelLayoutTag = kAudioChannelLayoutTag_UseChannelDescriptions;
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layout->mChannelBitmap = 0; /* Not used */
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layout->mNumberChannelDescriptions = channels;
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for (i = 0; i < channels; i++) {
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if (channel_mask != 0) {
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layout->mChannelDescriptions[i].mChannelLabel =
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gst_audio_channel_position_to_core_audio (positions[i], i);
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} else {
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/* Discrete channel numbers are ORed into this */
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layout->mChannelDescriptions[i].mChannelLabel =
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kAudioChannelLabel_Discrete_0 | i;
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}
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/* Others unused */
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layout->mChannelDescriptions[i].mChannelFlags = kAudioChannelFlags_AllOff;
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layout->mChannelDescriptions[i].mCoordinates[0] = 0.f;
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layout->mChannelDescriptions[i].mCoordinates[1] = 0.f;
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layout->mChannelDescriptions[i].mCoordinates[2] = 0.f;
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}
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/* Sets GStreamer-ordered channel layout on the inner scope.
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* Reordering between the inner scope and outer scope is handled
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* by the Audio Unit itself. */
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ret = _core_audio_set_property (core_audio,
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kAudioUnitProperty_AudioChannelLayout, layout, layoutSize);
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g_free (layout);
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return ret;
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}
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/* The AudioUnit must be uninitialized before calling this */
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gboolean
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gst_core_audio_set_format (GstCoreAudio * core_audio,
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AudioStreamBasicDescription format)
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{
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GST_DEBUG_OBJECT (core_audio->osxbuf, "Setting format for AudioUnit");
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return _core_audio_set_property (core_audio, kAudioUnitProperty_StreamFormat,
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&format, sizeof (AudioStreamBasicDescription));
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}
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gboolean
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gst_core_audio_open_device (GstCoreAudio * core_audio, OSType sub_type,
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const gchar * adesc)
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{
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AudioComponentDescription desc;
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AudioComponent comp;
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OSStatus status;
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AudioUnit unit;
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UInt32 enableIO;
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desc.componentType = kAudioUnitType_Output;
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desc.componentSubType = sub_type;
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desc.componentManufacturer = kAudioUnitManufacturer_Apple;
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desc.componentFlags = 0;
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desc.componentFlagsMask = 0;
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comp = AudioComponentFindNext (NULL, &desc);
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if (comp == NULL) {
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GST_WARNING_OBJECT (core_audio->osxbuf, "Couldn't find %s component",
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adesc);
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return FALSE;
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}
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status = AudioComponentInstanceNew (comp, &unit);
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if (status) {
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GST_ERROR_OBJECT (core_audio->osxbuf, "Couldn't open %s component %d",
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adesc, (int) status);
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return FALSE;
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}
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if (core_audio->is_src) {
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/* enable input */
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enableIO = 1;
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status = AudioUnitSetProperty (unit, kAudioOutputUnitProperty_EnableIO, kAudioUnitScope_Input, 1, /* 1 = input element */
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&enableIO, sizeof (enableIO));
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if (status) {
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AudioComponentInstanceDispose (unit);
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GST_WARNING_OBJECT (core_audio->osxbuf, "Failed to enable input: %d",
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(int) status);
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return FALSE;
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}
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/* disable output */
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enableIO = 0;
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status = AudioUnitSetProperty (unit, kAudioOutputUnitProperty_EnableIO, kAudioUnitScope_Output, 0, /* 0 = output element */
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&enableIO, sizeof (enableIO));
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if (status) {
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AudioComponentInstanceDispose (unit);
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GST_WARNING_OBJECT (core_audio->osxbuf, "Failed to disable output: %d",
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(int) status);
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return FALSE;
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}
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}
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GST_DEBUG_OBJECT (core_audio->osxbuf, "Created %s AudioUnit: %p", adesc,
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unit);
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core_audio->audiounit = unit;
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return TRUE;
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}
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AudioChannelLabel
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gst_audio_channel_position_to_core_audio (GstAudioChannelPosition
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position, int channel)
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{
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switch (position) {
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case GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT:
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return kAudioChannelLabel_Left;
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case GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT:
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return kAudioChannelLabel_Right;
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case GST_AUDIO_CHANNEL_POSITION_REAR_CENTER:
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return kAudioChannelLabel_CenterSurround;
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case GST_AUDIO_CHANNEL_POSITION_REAR_LEFT:
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return kAudioChannelLabel_LeftSurround;
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case GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT:
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return kAudioChannelLabel_RightSurround;
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case GST_AUDIO_CHANNEL_POSITION_LFE1:
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return kAudioChannelLabel_LFEScreen;
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case GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER:
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return kAudioChannelLabel_Center;
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case GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT:
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return kAudioChannelLabel_LeftSurroundDirect;
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case GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT:
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return kAudioChannelLabel_RightSurroundDirect;
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case GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER:
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return kAudioChannelLabel_LeftCenter;
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case GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER:
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return kAudioChannelLabel_RightCenter;
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case GST_AUDIO_CHANNEL_POSITION_TOP_REAR_LEFT:
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return kAudioChannelLabel_TopBackLeft;
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case GST_AUDIO_CHANNEL_POSITION_TOP_REAR_CENTER:
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return kAudioChannelLabel_TopBackCenter;
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case GST_AUDIO_CHANNEL_POSITION_TOP_REAR_RIGHT:
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return kAudioChannelLabel_TopBackRight;
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case GST_AUDIO_CHANNEL_POSITION_WIDE_LEFT:
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return kAudioChannelLabel_LeftWide;
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case GST_AUDIO_CHANNEL_POSITION_WIDE_RIGHT:
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return kAudioChannelLabel_RightWide;
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case GST_AUDIO_CHANNEL_POSITION_LFE2:
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return kAudioChannelLabel_LFE2;
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case GST_AUDIO_CHANNEL_POSITION_TOP_FRONT_LEFT:
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return kAudioChannelLabel_VerticalHeightLeft;
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case GST_AUDIO_CHANNEL_POSITION_TOP_FRONT_RIGHT:
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return kAudioChannelLabel_VerticalHeightRight;
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case GST_AUDIO_CHANNEL_POSITION_TOP_FRONT_CENTER:
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return kAudioChannelLabel_VerticalHeightCenter;
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/* Special position values */
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case GST_AUDIO_CHANNEL_POSITION_NONE:
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return kAudioChannelLabel_Discrete_0 | channel;
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case GST_AUDIO_CHANNEL_POSITION_MONO:
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return kAudioChannelLabel_Mono;
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/* Following positions are unmapped --
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* i.e. mapped to kAudioChannelLabel_Unknown: */
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case GST_AUDIO_CHANNEL_POSITION_TOP_CENTER:
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case GST_AUDIO_CHANNEL_POSITION_TOP_SIDE_LEFT:
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case GST_AUDIO_CHANNEL_POSITION_TOP_SIDE_RIGHT:
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case GST_AUDIO_CHANNEL_POSITION_BOTTOM_FRONT_CENTER:
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case GST_AUDIO_CHANNEL_POSITION_BOTTOM_FRONT_LEFT:
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case GST_AUDIO_CHANNEL_POSITION_BOTTOM_FRONT_RIGHT:
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case GST_AUDIO_CHANNEL_POSITION_SURROUND_LEFT:
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case GST_AUDIO_CHANNEL_POSITION_SURROUND_RIGHT:
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default:
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return kAudioChannelLabel_Unknown;
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}
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}
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/* Performs a best-effort conversion. 'channel' is used for warnings only. */
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GstAudioChannelPosition
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gst_core_audio_channel_label_to_gst (AudioChannelLabel label,
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int channel, gboolean warn)
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{
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switch (label) {
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case kAudioChannelLabel_Left:
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return GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
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case kAudioChannelLabel_Right:
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return GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
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case kAudioChannelLabel_Center:
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return GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER;
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case kAudioChannelLabel_LFEScreen:
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return GST_AUDIO_CHANNEL_POSITION_LFE1;
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case kAudioChannelLabel_LeftSurround:
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return GST_AUDIO_CHANNEL_POSITION_REAR_LEFT;
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case kAudioChannelLabel_RightSurround:
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return GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT;
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case kAudioChannelLabel_LeftSurroundDirect:
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return GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT;
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case kAudioChannelLabel_RightSurroundDirect:
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return GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT;
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case kAudioChannelLabel_CenterSurround:
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return GST_AUDIO_CHANNEL_POSITION_REAR_CENTER;
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case kAudioChannelLabel_LeftCenter:
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return GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER;
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case kAudioChannelLabel_RightCenter:
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return GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER;
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case kAudioChannelLabel_TopBackLeft:
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return GST_AUDIO_CHANNEL_POSITION_TOP_REAR_LEFT;
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case kAudioChannelLabel_TopBackCenter:
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return GST_AUDIO_CHANNEL_POSITION_TOP_REAR_CENTER;
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case kAudioChannelLabel_TopBackRight:
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return GST_AUDIO_CHANNEL_POSITION_TOP_REAR_RIGHT;
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case kAudioChannelLabel_LeftWide:
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return GST_AUDIO_CHANNEL_POSITION_WIDE_LEFT;
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case kAudioChannelLabel_RightWide:
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return GST_AUDIO_CHANNEL_POSITION_WIDE_RIGHT;
|
|
case kAudioChannelLabel_LFE2:
|
|
return GST_AUDIO_CHANNEL_POSITION_LFE2;
|
|
case kAudioChannelLabel_VerticalHeightLeft:
|
|
return GST_AUDIO_CHANNEL_POSITION_TOP_FRONT_LEFT;
|
|
case kAudioChannelLabel_VerticalHeightRight:
|
|
return GST_AUDIO_CHANNEL_POSITION_TOP_FRONT_RIGHT;
|
|
case kAudioChannelLabel_VerticalHeightCenter:
|
|
return GST_AUDIO_CHANNEL_POSITION_TOP_FRONT_CENTER;
|
|
|
|
/* Special position values */
|
|
|
|
case kAudioChannelLabel_Mono:
|
|
/* GST_AUDIO_CHANNEL_POSITION_MONO is only for 1-channel layouts */
|
|
return GST_AUDIO_CHANNEL_POSITION_INVALID;
|
|
case kAudioChannelLabel_Discrete:
|
|
return GST_AUDIO_CHANNEL_POSITION_NONE;
|
|
|
|
/*
|
|
Following labels are unmapped --
|
|
i.e. mapped to GST_AUDIO_CHANNEL_POSITION_INVALID:
|
|
*/
|
|
case kAudioChannelLabel_RearSurroundLeft:
|
|
case kAudioChannelLabel_RearSurroundRight:
|
|
case kAudioChannelLabel_TopCenterSurround:
|
|
case kAudioChannelLabel_LeftTotal:
|
|
case kAudioChannelLabel_RightTotal:
|
|
case kAudioChannelLabel_HearingImpaired:
|
|
case kAudioChannelLabel_Narration:
|
|
case kAudioChannelLabel_DialogCentricMix:
|
|
case kAudioChannelLabel_CenterSurroundDirect:
|
|
case kAudioChannelLabel_Haptic:
|
|
default:
|
|
if (label >> 16 != 0) { /* kAudioChannelLabel_Discrete_N */
|
|
/* no way to store discrete channel order */
|
|
if (warn)
|
|
GST_WARNING
|
|
("Core Audio channel %u labeled kAudioChannelLabel_Discrete_%u -- discrete order will be lost",
|
|
channel, ((unsigned int) label) & 0xFFFF);
|
|
return GST_AUDIO_CHANNEL_POSITION_NONE;
|
|
} else {
|
|
if (warn)
|
|
GST_WARNING
|
|
("Core Audio channel %u has unsupported label %d and will be skipped",
|
|
channel, (int) label);
|
|
return GST_AUDIO_CHANNEL_POSITION_INVALID;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
gst_core_audio_dump_channel_layout (AudioChannelLayout * channel_layout)
|
|
{
|
|
UInt32 i;
|
|
|
|
GST_DEBUG ("mChannelLayoutTag: 0x%lx",
|
|
(unsigned long) channel_layout->mChannelLayoutTag);
|
|
GST_DEBUG ("mChannelBitmap: 0x%lx",
|
|
(unsigned long) channel_layout->mChannelBitmap);
|
|
GST_DEBUG ("mNumberChannelDescriptions: %lu",
|
|
(unsigned long) channel_layout->mNumberChannelDescriptions);
|
|
for (i = 0; i < channel_layout->mNumberChannelDescriptions; i++) {
|
|
AudioChannelDescription *channel_desc =
|
|
&channel_layout->mChannelDescriptions[i];
|
|
GST_DEBUG (" mChannelLabel: 0x%lx mChannelFlags: 0x%lx "
|
|
"mCoordinates[0]: %f mCoordinates[1]: %f "
|
|
"mCoordinates[2]: %f",
|
|
(unsigned long) channel_desc->mChannelLabel,
|
|
(unsigned long) channel_desc->mChannelFlags,
|
|
channel_desc->mCoordinates[0], channel_desc->mCoordinates[1],
|
|
channel_desc->mCoordinates[2]);
|
|
}
|
|
}
|