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decklinkaudiosink: Add support for 8 and 16 channels

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This commit is contained in:
Sebastian Dröge 2016-08-26 14:08:11 +03:00
parent 7898bc5810
commit 6fdd4d8288
3 changed files with 64 additions and 3 deletions
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1
sys/decklink/gstdecklink.cpp
View file

@ -945,6 +945,7 @@ init_devices (gpointer data)
ret = decklink->QueryInterface (IID_IDeckLinkAttributes,
(void **) &devices[i].input.attributes);
devices[i].output.attributes = devices[i].input.attributes;
if (ret != S_OK) {
GST_WARNING ("selected device does not have attributes interface");
}

1
sys/decklink/gstdecklink.h
View file

@ -167,6 +167,7 @@ typedef struct _GstDecklinkOutput GstDecklinkOutput;
struct _GstDecklinkOutput {
IDeckLink *device;
IDeckLinkOutput *output;
IDeckLinkAttributes *attributes;
GstClock *clock;
GstClockTime clock_start_time, clock_last_time, clock_epoch;
GstClockTimeDiff clock_offset;

65
sys/decklink/gstdecklinkaudiosink.cpp
View file

@ -409,7 +409,7 @@ gst_decklink_audio_sink_ringbuffer_acquire (GstAudioRingBuffer * rb,
}
ret = self->output->output->EnableAudioOutput (bmdAudioSampleRate48kHz,
sample_depth, 2, bmdAudioOutputStreamContinuous);
sample_depth, spec->info.channels, bmdAudioOutputStreamContinuous);
if (ret != S_OK) {
GST_WARNING_OBJECT (self->sink, "Failed to enable audio output 0x%08x",
ret);
@ -517,7 +517,7 @@ static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS
("audio/x-raw, format={S16LE,S32LE}, channels=2, rate=48000, "
("audio/x-raw, format={S16LE,S32LE}, channels={2, 8, 16}, rate=48000, "
"layout=interleaved")
);
@ -529,7 +529,7 @@ static void gst_decklink_audio_sink_finalize (GObject * object);
static GstStateChangeReturn gst_decklink_audio_sink_change_state (GstElement *
element, GstStateChange transition);
static GstCaps * gst_decklink_audio_sink_get_caps (GstBaseSink * bsink, GstCaps * filter);
static GstAudioRingBuffer
* gst_decklink_audio_sink_create_ringbuffer (GstAudioBaseSink * absink);
@ -542,6 +542,7 @@ gst_decklink_audio_sink_class_init (GstDecklinkAudioSinkClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstBaseSinkClass *basesink_class = GST_BASE_SINK_CLASS (klass);
GstAudioBaseSinkClass *audiobasesink_class =
GST_AUDIO_BASE_SINK_CLASS (klass);
@ -552,6 +553,8 @@ gst_decklink_audio_sink_class_init (GstDecklinkAudioSinkClass * klass)
element_class->change_state =
GST_DEBUG_FUNCPTR (gst_decklink_audio_sink_change_state);
basesink_class->get_caps = GST_DEBUG_FUNCPTR (gst_decklink_audio_sink_get_caps);
audiobasesink_class->create_ringbuffer =
GST_DEBUG_FUNCPTR (gst_decklink_audio_sink_create_ringbuffer);
@ -651,6 +654,62 @@ gst_decklink_audio_sink_change_state (GstElement * element,
return ret;
}
static GstCaps *
gst_decklink_audio_sink_get_caps (GstBaseSink * bsink, GstCaps * filter)
{
GstDecklinkAudioSink *self = GST_DECKLINK_AUDIO_SINK_CAST (bsink);
GstDecklinkAudioSinkRingBuffer *buf =
GST_DECKLINK_AUDIO_SINK_RING_BUFFER_CAST (GST_AUDIO_BASE_SINK_CAST
(self)->ringbuffer);
GstCaps *caps = gst_pad_get_pad_template_caps (GST_BASE_SINK_PAD (bsink));
if (buf) {
GST_OBJECT_LOCK (buf);
if (buf->output && buf->output->attributes) {
gint64 max_channels = 0;
HRESULT ret;
GstStructure *s;
GValue arr = G_VALUE_INIT;
GValue v = G_VALUE_INIT;
ret = buf->output->attributes->GetInt (BMDDeckLinkMaximumAudioChannels, &max_channels);
/* 2 should always be supported */
if (ret != S_OK) {
max_channels = 2;
}
caps = gst_caps_make_writable (caps);
s = gst_caps_get_structure (caps, 0);
g_value_init (&arr, GST_TYPE_LIST);
g_value_init (&v, G_TYPE_INT);
if (max_channels >= 16) {
g_value_set_int (&v, 16);
gst_value_list_append_value (&arr, &v);
}
if (max_channels >= 8) {
g_value_set_int (&v, 8);
gst_value_list_append_value (&arr, &v);
}
g_value_set_int (&v, 2);
gst_value_list_append_value (&arr, &v);
gst_structure_set_value (s, "channels", &arr);
g_value_unset (&v);
g_value_unset (&arr);
}
GST_OBJECT_UNLOCK (buf);
}
if (filter) {
GstCaps *intersection = gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (caps);
caps = intersection;
}
return caps;
}
static GstAudioRingBuffer *
gst_decklink_audio_sink_create_ringbuffer (GstAudioBaseSink * absink)
{