gboolean
gst_core_audio_parse_channel_layout (AudioChannelLayout * layout,
guint * channels, guint64 * channel_mask, GstAudioChannelPosition * pos)
{
g_assert (channels != NULL);
g_assert (channel_mask != NULL);
g_assert (layout != NULL);
if (layout->mChannelLayoutTag ==
kAudioChannelLayoutTag_UseChannelDescriptions) {
switch (layout->mNumberChannelDescriptions) {
case 0:
if (pos)
pos[0] = GST_AUDIO_CHANNEL_POSITION_NONE;
*channels = 0;
*channel_mask = 0;
return TRUE;
case 1:
if (pos)
pos[0] = GST_AUDIO_CHANNEL_POSITION_MONO;
*channels = 1;
*channel_mask = 0;
return TRUE;
case 2:
if (pos) {
pos[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
pos[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
}
*channels = 2;
*channel_mask =
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_LEFT) |
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_RIGHT);
return TRUE;
default:
_core_audio_parse_channel_descriptions (layout, channels, channel_mask,
pos);
return TRUE;
}
} else if (layout->mChannelLayoutTag == kAudioChannelLayoutTag_Mono) {
if (pos)
pos[0] = GST_AUDIO_CHANNEL_POSITION_MONO;
*channels = 1;
*channel_mask = 0;
return TRUE;
} else if (layout->mChannelLayoutTag == kAudioChannelLayoutTag_Stereo ||
layout->mChannelLayoutTag == kAudioChannelLayoutTag_StereoHeadphones ||
layout->mChannelLayoutTag == kAudioChannelLayoutTag_Binaural) {
if (pos) {
pos[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
pos[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
}
*channels = 2;
*channel_mask =
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_LEFT) |
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_RIGHT);
return TRUE;
} else if (layout->mChannelLayoutTag == kAudioChannelLayoutTag_Quadraphonic) {
if (pos) {
pos[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
pos[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
pos[2] = GST_AUDIO_CHANNEL_POSITION_SURROUND_LEFT;
pos[3] = GST_AUDIO_CHANNEL_POSITION_SURROUND_RIGHT;
}
*channels = 4;
*channel_mask =
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_LEFT) |
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_RIGHT) |
GST_AUDIO_CHANNEL_POSITION_MASK (SURROUND_LEFT) |
GST_AUDIO_CHANNEL_POSITION_MASK (SURROUND_RIGHT);
return TRUE;
} else if (layout->mChannelLayoutTag == kAudioChannelLayoutTag_Pentagonal) {
if (pos) {
pos[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
pos[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
pos[2] = GST_AUDIO_CHANNEL_POSITION_SURROUND_LEFT;
pos[3] = GST_AUDIO_CHANNEL_POSITION_SURROUND_RIGHT;
pos[4] = GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER;
}
*channels = 5;
*channel_mask =
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_LEFT) |
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_RIGHT) |
GST_AUDIO_CHANNEL_POSITION_MASK (SURROUND_LEFT) |
GST_AUDIO_CHANNEL_POSITION_MASK (SURROUND_RIGHT) |
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_CENTER);
return TRUE;
} else if (layout->mChannelLayoutTag == kAudioChannelLayoutTag_Cube) {
if (pos) {
pos[0] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
pos[1] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
pos[2] = GST_AUDIO_CHANNEL_POSITION_REAR_LEFT;
pos[3] = GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT;
pos[4] = GST_AUDIO_CHANNEL_POSITION_TOP_FRONT_LEFT;
pos[5] = GST_AUDIO_CHANNEL_POSITION_TOP_FRONT_RIGHT;
pos[6] = GST_AUDIO_CHANNEL_POSITION_TOP_REAR_LEFT;
pos[7] = GST_AUDIO_CHANNEL_POSITION_TOP_REAR_RIGHT;
}
*channels = 8;
*channel_mask =
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_LEFT) |
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_RIGHT) |
GST_AUDIO_CHANNEL_POSITION_MASK (REAR_LEFT) |
GST_AUDIO_CHANNEL_POSITION_MASK (REAR_RIGHT) |
GST_AUDIO_CHANNEL_POSITION_MASK (TOP_FRONT_LEFT) |
GST_AUDIO_CHANNEL_POSITION_MASK (TOP_FRONT_RIGHT) |
GST_AUDIO_CHANNEL_POSITION_MASK (TOP_REAR_LEFT) |
GST_AUDIO_CHANNEL_POSITION_MASK (TOP_REAR_RIGHT);
return TRUE;
} else {
GST_WARNING
("AudioChannelLayoutTag: %u not yet supported",
layout->mChannelLayoutTag);
*channels = 0;
*channel_mask = 0;
return FALSE;
}
}
static gboolean
gst_osx_audio_sink_allowed_caps (GstOsxAudioSink * osxsink)
{
gint i, channels;
gboolean spdif_allowed;
AudioChannelLayout *layout;
GstElementClass *element_class;
GstPadTemplate *pad_template;
GstCaps *caps, *in_caps;
guint64 channel_mask = 0;
GstAudioChannelPosition *pos = osxsink->channel_positions;
/* First collect info about the HW capabilites and preferences */
spdif_allowed =
gst_core_audio_audio_device_is_spdif_avail (osxsink->device_id);
layout = gst_core_audio_audio_device_get_channel_layout (osxsink->device_id);
GST_DEBUG_OBJECT (osxsink, "Selected device ID: %u SPDIF allowed: %d",
(unsigned) osxsink->device_id, spdif_allowed);
if (layout) {
channels = MIN (layout->mNumberChannelDescriptions,
GST_OSX_AUDIO_MAX_CHANNEL);
} else {
GST_WARNING_OBJECT (osxsink, "This driver does not support "
"kAudioDevicePropertyPreferredChannelLayout.");
channels = 2;
}
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:
channels = MIN (layout->mNumberChannelDescriptions,
GST_OSX_AUDIO_MAX_CHANNEL);
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_OBJECT (osxsink, "unrecognized channel: %d",
(int) layout->mChannelDescriptions[i].mChannelLabel);
channel_mask = 0;
channels = 2;
break;
}
}
}
g_free (layout);
/* Recover the template caps */
element_class = GST_ELEMENT_GET_CLASS (osxsink);
pad_template = gst_element_class_get_pad_template (element_class, "sink");
in_caps = gst_pad_template_get_caps (pad_template);
/* Create the allowed subset */
caps = gst_caps_new_empty ();
for (i = 0; i < gst_caps_get_size (in_caps); i++) {
GstStructure *in_s, *out_s;
in_s = gst_caps_get_structure (in_caps, i);
if (gst_structure_has_name (in_s, "audio/x-ac3") ||
gst_structure_has_name (in_s, "audio/x-dts")) {
if (spdif_allowed) {
gst_caps_append_structure (caps, gst_structure_copy (in_s));
}
}
gst_audio_channel_positions_to_mask (pos, channels, false, &channel_mask);
out_s = gst_structure_copy (in_s);
gst_structure_remove_fields (out_s, "channels", "channel-mask", NULL);
gst_structure_set (out_s, "channels", G_TYPE_INT, channels,
"channel-mask", GST_TYPE_BITMASK, channel_mask, NULL);
gst_caps_append_structure (caps, out_s);
}
if (osxsink->cached_caps) {
gst_caps_unref (osxsink->cached_caps);
}
osxsink->cached_caps = caps;
osxsink->channels = channels;
return TRUE;
}
static gboolean
gst_pulsesrc_create_stream (GstPulseSrc * pulsesrc, GstCaps ** caps)
{
pa_channel_map channel_map;
const pa_channel_map *m;
GstStructure *s;
gboolean need_channel_layout = FALSE;
GstAudioRingBufferSpec spec;
const gchar *name;
s = gst_caps_get_structure (*caps, 0);
gst_structure_get_int (s, "channels", &spec.info.channels);
if (!gst_structure_has_field (s, "channel-mask")) {
if (spec.info.channels == 1) {
pa_channel_map_init_mono (&channel_map);
} else if (spec.info.channels == 2) {
gst_structure_set (s, "channel-mask", GST_TYPE_BITMASK,
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_LEFT) |
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_RIGHT), NULL);
pa_channel_map_init_stereo (&channel_map);
} else {
need_channel_layout = TRUE;
gst_structure_set (s, "channel-mask", GST_TYPE_BITMASK,
G_GUINT64_CONSTANT (0), NULL);
}
}
memset (&spec, 0, sizeof (GstAudioRingBufferSpec));
spec.latency_time = GST_SECOND;
if (!gst_audio_ring_buffer_parse_caps (&spec, *caps))
goto invalid_caps;
/* Keep the refcount of the caps at 1 to make them writable */
gst_caps_unref (spec.caps);
if (!need_channel_layout
&& !gst_pulse_gst_to_channel_map (&channel_map, &spec)) {
need_channel_layout = TRUE;
gst_structure_set (s, "channel-mask", GST_TYPE_BITMASK,
G_GUINT64_CONSTANT (0), NULL);
memset (spec.info.position, 0xff, sizeof (spec.info.position));
}
if (!gst_pulse_fill_sample_spec (&spec, &pulsesrc->sample_spec))
goto invalid_spec;
pa_threaded_mainloop_lock (pulsesrc->mainloop);
if (!pulsesrc->context)
goto bad_context;
name = "Record Stream";
if (pulsesrc->proplist) {
if (!(pulsesrc->stream = pa_stream_new_with_proplist (pulsesrc->context,
name, &pulsesrc->sample_spec,
(need_channel_layout) ? NULL : &channel_map,
pulsesrc->proplist)))
goto create_failed;
} else if (!(pulsesrc->stream = pa_stream_new (pulsesrc->context,
name, &pulsesrc->sample_spec,
(need_channel_layout) ? NULL : &channel_map)))
goto create_failed;
m = pa_stream_get_channel_map (pulsesrc->stream);
gst_pulse_channel_map_to_gst (m, &spec);
gst_audio_channel_positions_to_valid_order (spec.info.position,
spec.info.channels);
gst_caps_unref (*caps);
*caps = gst_audio_info_to_caps (&spec.info);
GST_DEBUG_OBJECT (pulsesrc, "Caps are %" GST_PTR_FORMAT, *caps);
pa_stream_set_state_callback (pulsesrc->stream, gst_pulsesrc_stream_state_cb,
pulsesrc);
pa_stream_set_read_callback (pulsesrc->stream, gst_pulsesrc_stream_request_cb,
pulsesrc);
pa_stream_set_underflow_callback (pulsesrc->stream,
gst_pulsesrc_stream_underflow_cb, pulsesrc);
pa_stream_set_overflow_callback (pulsesrc->stream,
gst_pulsesrc_stream_overflow_cb, pulsesrc);
pa_stream_set_latency_update_callback (pulsesrc->stream,
gst_pulsesrc_stream_latency_update_cb, pulsesrc);
pa_threaded_mainloop_unlock (pulsesrc->mainloop);
return TRUE;
/* ERRORS */
invalid_caps:
{
GST_ELEMENT_ERROR (pulsesrc, RESOURCE, SETTINGS,
("Can't parse caps."), (NULL));
goto fail;
}
invalid_spec:
{
GST_ELEMENT_ERROR (pulsesrc, RESOURCE, SETTINGS,
("Invalid sample specification."), (NULL));
goto fail;
}
bad_context:
{
GST_ELEMENT_ERROR (pulsesrc, RESOURCE, FAILED, ("Bad context"), (NULL));
goto unlock_and_fail;
}
create_failed:
{
GST_ELEMENT_ERROR (pulsesrc, RESOURCE, FAILED,
("Failed to create stream: %s",
pa_strerror (pa_context_errno (pulsesrc->context))), (NULL));
goto unlock_and_fail;
}
unlock_and_fail:
{
gst_pulsesrc_destroy_stream (pulsesrc);
pa_threaded_mainloop_unlock (pulsesrc->mainloop);
fail:
return FALSE;
}
}
static GstCaps *
gst_flite_test_src_fixate (GstBaseSrc * bsrc, GstCaps * caps)
{
GstStructure *structure;
gint channels;
caps = gst_caps_truncate (caps);
caps = gst_caps_make_writable (caps);
structure = gst_caps_get_structure (caps, 0);
gst_structure_fixate_field_nearest_int (structure, "channels", 2);
gst_structure_get_int (structure, "channels", &channels);
if (channels == 1) {
gst_structure_remove_field (structure, "channel-mask");
} else {
guint64 channel_mask = 0;
gint x = 63;
if (!gst_structure_get (structure, "channel-mask", GST_TYPE_BITMASK,
&channel_mask, NULL)) {
switch (channels) {
case 8:
channel_mask =
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_LEFT) |
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_RIGHT) |
GST_AUDIO_CHANNEL_POSITION_MASK (REAR_LEFT) |
GST_AUDIO_CHANNEL_POSITION_MASK (REAR_RIGHT) |
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_CENTER) |
GST_AUDIO_CHANNEL_POSITION_MASK (LFE1) |
GST_AUDIO_CHANNEL_POSITION_MASK (SIDE_LEFT) |
GST_AUDIO_CHANNEL_POSITION_MASK (SIDE_RIGHT);
break;
case 7:
channel_mask =
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_LEFT) |
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_RIGHT) |
GST_AUDIO_CHANNEL_POSITION_MASK (REAR_LEFT) |
GST_AUDIO_CHANNEL_POSITION_MASK (REAR_RIGHT) |
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_CENTER) |
GST_AUDIO_CHANNEL_POSITION_MASK (LFE1) |
GST_AUDIO_CHANNEL_POSITION_MASK (REAR_CENTER);
break;
case 6:
channel_mask =
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_LEFT) |
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_RIGHT) |
GST_AUDIO_CHANNEL_POSITION_MASK (REAR_LEFT) |
GST_AUDIO_CHANNEL_POSITION_MASK (REAR_RIGHT) |
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_CENTER) |
GST_AUDIO_CHANNEL_POSITION_MASK (LFE1);
break;
case 5:
channel_mask =
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_LEFT) |
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_RIGHT) |
GST_AUDIO_CHANNEL_POSITION_MASK (REAR_LEFT) |
GST_AUDIO_CHANNEL_POSITION_MASK (REAR_RIGHT) |
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_CENTER);
break;
case 4:
channel_mask =
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_LEFT) |
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_RIGHT) |
GST_AUDIO_CHANNEL_POSITION_MASK (REAR_LEFT) |
GST_AUDIO_CHANNEL_POSITION_MASK (REAR_RIGHT);
break;
case 3:
channel_mask =
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_LEFT) |
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_RIGHT) |
GST_AUDIO_CHANNEL_POSITION_MASK (LFE1);
break;
case 2:
channel_mask =
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_LEFT) |
GST_AUDIO_CHANNEL_POSITION_MASK (FRONT_RIGHT);
break;
default:
channel_mask = 0;
break;
}
}
while (n_bits_set (channel_mask) > channels) {
channel_mask &= ~(G_GUINT64_CONSTANT (1) << x);
x--;
}
gst_structure_set (structure, "channel-mask", GST_TYPE_BITMASK,
channel_mask, NULL);
}
return GST_BASE_SRC_CLASS (parent_class)->fixate (bsrc, caps);
}
