gstreamer/sys/osxaudio/gstosxcoreaudio.c

330 lines
8.9 KiB
C

/*
* GStreamer
* Copyright (C) 2012-2013 Fluendo S.A. <support@fluendo.com>
* Authors: Josep Torra Vallès <josep@fluendo.com>
* Andoni Morales Alastruey <amorales@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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
*/
#include "gstosxcoreaudio.h"
#include "gstosxcoreaudiocommon.h"
GST_DEBUG_CATEGORY_STATIC (osx_audio_debug);
#define GST_CAT_DEFAULT osx_audio_debug
G_DEFINE_TYPE (GstCoreAudio, gst_core_audio, G_TYPE_OBJECT);
#ifdef HAVE_IOS
#include "gstosxcoreaudioremoteio.c"
#else
#include "gstosxcoreaudiohal.c"
#endif
static void
gst_core_audio_class_init (GstCoreAudioClass * klass)
{
}
static void
gst_core_audio_init (GstCoreAudio * core_audio)
{
core_audio->is_passthrough = FALSE;
core_audio->device_id = kAudioDeviceUnknown;
core_audio->is_src = FALSE;
core_audio->audiounit = NULL;
#ifndef HAVE_IOS
core_audio->hog_pid = -1;
core_audio->disabled_mixing = FALSE;
#endif
}
/**************************
* Public API *
*************************/
GstCoreAudio *
gst_core_audio_new (GstObject * osxbuf)
{
GstCoreAudio *core_audio;
core_audio = g_object_new (GST_TYPE_CORE_AUDIO, NULL);
core_audio->osxbuf = osxbuf;
return core_audio;
}
gboolean
gst_core_audio_close (GstCoreAudio * core_audio)
{
AudioComponentInstanceDispose (core_audio->audiounit);
core_audio->audiounit = NULL;
return TRUE;
}
gboolean
gst_core_audio_open (GstCoreAudio * core_audio)
{
return gst_core_audio_open_impl (core_audio);
}
gboolean
gst_core_audio_start_processing (GstCoreAudio * core_audio)
{
return gst_core_audio_start_processing_impl (core_audio);
}
gboolean
gst_core_audio_pause_processing (GstCoreAudio * core_audio)
{
return gst_core_audio_pause_processing_impl (core_audio);
}
gboolean
gst_core_audio_stop_processing (GstCoreAudio * core_audio)
{
return gst_core_audio_stop_processing_impl (core_audio);
}
gboolean
gst_core_audio_get_samples_and_latency (GstCoreAudio * core_audio,
gdouble rate, guint * samples, gdouble * latency)
{
return gst_core_audio_get_samples_and_latency_impl (core_audio, rate,
samples, latency);
}
gboolean
gst_core_audio_initialize (GstCoreAudio * core_audio,
AudioStreamBasicDescription format, GstCaps * caps, gboolean is_passthrough)
{
guint32 frame_size;
OSStatus status;
GST_DEBUG_OBJECT (core_audio,
"Initializing: passthrough:%d caps:%" GST_PTR_FORMAT, is_passthrough,
caps);
if (!gst_core_audio_initialize_impl (core_audio, format, caps,
is_passthrough, &frame_size)) {
goto error;
}
if (core_audio->is_src) {
/* create AudioBufferList needed for recording */
core_audio->recBufferList =
buffer_list_alloc (format.mChannelsPerFrame,
frame_size * format.mBytesPerFrame);
}
/* Initialize the AudioUnit */
status = AudioUnitInitialize (core_audio->audiounit);
if (status) {
GST_ERROR_OBJECT (core_audio, "Failed to initialise AudioUnit: %d",
(int) status);
goto error;
}
return TRUE;
error:
if (core_audio->is_src && core_audio->recBufferList) {
buffer_list_free (core_audio->recBufferList);
core_audio->recBufferList = NULL;
}
return FALSE;
}
void
gst_core_audio_unitialize (GstCoreAudio * core_audio)
{
AudioUnitUninitialize (core_audio->audiounit);
if (core_audio->recBufferList) {
buffer_list_free (core_audio->recBufferList);
core_audio->recBufferList = NULL;
}
}
void
gst_core_audio_set_volume (GstCoreAudio * core_audio, gfloat volume)
{
AudioUnitSetParameter (core_audio->audiounit, kHALOutputParam_Volume,
kAudioUnitScope_Global, 0, (float) volume, 0);
}
gboolean
gst_core_audio_select_device (GstCoreAudio * core_audio)
{
return gst_core_audio_select_device_impl (core_audio);
}
void
gst_core_audio_init_debug (void)
{
GST_DEBUG_CATEGORY_INIT (osx_audio_debug, "osxaudio", 0,
"OSX Audio Elements");
}
gboolean
gst_core_audio_audio_device_is_spdif_avail (AudioDeviceID device_id)
{
return gst_core_audio_audio_device_is_spdif_avail_impl (device_id);
}
gboolean
gst_core_audio_parse_channel_layout (AudioChannelLayout * layout,
gint channels, guint64 * channel_mask, GstAudioChannelPosition * pos)
{
gint i;
gboolean ret = TRUE;
g_return_val_if_fail (channels <= GST_OSX_AUDIO_MAX_CHANNEL, FALSE);
switch (channels) {
case 0:
pos[0] = GST_AUDIO_CHANNEL_POSITION_NONE;
break;
case 1:
pos[0] = GST_AUDIO_CHANNEL_POSITION_MONO;
break;
case 2:
pos[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
pos[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
*channel_mask |= GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_LEFT);
*channel_mask |= GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_RIGHT);
break;
default:
for (i = 0; i < channels; i++) {
switch (layout->mChannelDescriptions[i].mChannelLabel) {
case kAudioChannelLabel_Left:
pos[i] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
break;
case kAudioChannelLabel_Right:
pos[i] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
break;
case kAudioChannelLabel_Center:
pos[i] = GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER;
break;
case kAudioChannelLabel_LFEScreen:
pos[i] = GST_AUDIO_CHANNEL_POSITION_LFE1;
break;
case kAudioChannelLabel_LeftSurround:
pos[i] = GST_AUDIO_CHANNEL_POSITION_REAR_LEFT;
break;
case kAudioChannelLabel_RightSurround:
pos[i] = GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT;
break;
case kAudioChannelLabel_RearSurroundLeft:
pos[i] = GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT;
break;
case kAudioChannelLabel_RearSurroundRight:
pos[i] = GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT;
break;
case kAudioChannelLabel_CenterSurround:
pos[i] = GST_AUDIO_CHANNEL_POSITION_REAR_CENTER;
break;
default:
GST_WARNING ("unrecognized channel: %d",
(int) layout->mChannelDescriptions[i].mChannelLabel);
*channel_mask = 0;
ret = FALSE;
break;
}
}
}
return ret;
}
GstCaps *
gst_core_audio_asbd_to_caps (AudioStreamBasicDescription * asbd,
AudioChannelLayout * layout)
{
GstAudioInfo info;
GstAudioFormat format = GST_AUDIO_FORMAT_UNKNOWN;
GstAudioChannelPosition pos[64] = { GST_AUDIO_CHANNEL_POSITION_INVALID, };
gint rate, channels, bps, endianness;
guint64 channel_mask;
gboolean sign, interleaved;
if (asbd->mFormatID != kAudioFormatLinearPCM) {
GST_WARNING ("Only linear PCM is supported");
goto error;
}
if (!(asbd->mFormatFlags & kAudioFormatFlagIsPacked)) {
GST_WARNING ("Only packed formats supported");
goto error;
}
if (asbd->mFormatFlags & kLinearPCMFormatFlagsSampleFractionMask) {
GST_WARNING ("Fixed point audio is unsupported");
goto error;
}
rate = asbd->mSampleRate;
if (rate == kAudioStreamAnyRate)
rate = GST_AUDIO_DEF_RATE;
channels = asbd->mChannelsPerFrame;
if (channels == 0) {
/* The documentation says this should not happen! */
channels = 1;
}
bps = asbd->mBitsPerChannel;
endianness = asbd->mFormatFlags & kAudioFormatFlagIsBigEndian ?
G_BIG_ENDIAN : G_LITTLE_ENDIAN;
sign = asbd->mFormatID & kAudioFormatFlagIsSignedInteger ? TRUE : FALSE;
interleaved = asbd->mFormatFlags & kAudioFormatFlagIsNonInterleaved ?
TRUE : FALSE;
if (asbd->mFormatFlags & kAudioFormatFlagIsFloat) {
if (bps == 32) {
if (endianness == G_LITTLE_ENDIAN)
format = GST_AUDIO_FORMAT_F32LE;
else
format = GST_AUDIO_FORMAT_F32BE;
} else if (bps == 64) {
if (endianness == G_LITTLE_ENDIAN)
format = GST_AUDIO_FORMAT_F64LE;
else
format = GST_AUDIO_FORMAT_F64BE;
}
} else {
format = gst_audio_format_build_integer (sign, endianness, bps, bps);
}
if (format == GST_AUDIO_FORMAT_UNKNOWN) {
GST_WARNING ("Unsupported sample format");
goto error;
}
if (!gst_core_audio_parse_channel_layout (layout, channels, &channel_mask,
pos)) {
GST_WARNING ("Failed to parse channel layout");
goto error;
}
gst_audio_info_set_format (&info, format, rate, channels, pos);
return gst_audio_info_to_caps (&info);
error:
return NULL;
}