static void gst_wasapi_sink_finalize (GObject * object) { GstWasapiSink *self = GST_WASAPI_SINK (object); CoUninitialize (); G_OBJECT_CLASS (parent_class)->finalize (object); }
static gboolean gst_wasapi_sink_close (GstAudioSink * asink) { GstWasapiSink *self = GST_WASAPI_SINK (asink); if (self->client != NULL) { IUnknown_Release (self->client); self->client = NULL; } return TRUE; }
static void gst_wasapi_sink_dispose (GObject * object) { GstWasapiSink *self = GST_WASAPI_SINK (object); if (self->event_handle != NULL) { CloseHandle (self->event_handle); self->event_handle = NULL; } G_OBJECT_CLASS (parent_class)->dispose (object); }
static gboolean gst_wasapi_sink_start (GstBaseSink * sink) { GstWasapiSink *self = GST_WASAPI_SINK (sink); gboolean res = FALSE; IAudioClient *client = NULL; HRESULT hr; IAudioRenderClient *render_client = NULL; if (!gst_wasapi_util_get_default_device_client (GST_ELEMENT (self), FALSE, self->rate, self->buffer_time, self->period_time, AUDCLNT_STREAMFLAGS_EVENTCALLBACK, &client, &self->latency)) goto beach; hr = IAudioClient_SetEventHandle (client, self->event_handle); if (hr != S_OK) { GST_ERROR_OBJECT (self, "IAudioClient::SetEventHandle () failed"); goto beach; } hr = IAudioClient_GetService (client, &IID_IAudioRenderClient, &render_client); if (hr != S_OK) { GST_ERROR_OBJECT (self, "IAudioClient::GetService " "(IID_IAudioRenderClient) failed"); goto beach; } hr = IAudioClient_Start (client); if (hr != S_OK) { GST_ERROR_OBJECT (self, "IAudioClient::Start failed"); goto beach; } self->client = client; self->render_client = render_client; res = TRUE; beach: if (!res) { if (render_client != NULL) IUnknown_Release (render_client); if (client != NULL) IUnknown_Release (client); } return res; }
static gboolean gst_wasapi_sink_unprepare (GstAudioSink * asink) { GstWasapiSink *self = GST_WASAPI_SINK (asink); if (self->client != NULL) { IAudioClient_Stop (self->client); } if (self->render_client != NULL) { IUnknown_Release (self->render_client); self->render_client = NULL; } return TRUE; }
static void gst_wasapi_sink_get_times (GstBaseSink * sink, GstBuffer * buffer, GstClockTime * start, GstClockTime * end) { GstWasapiSink *self = GST_WASAPI_SINK (sink); if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) { *start = GST_BUFFER_TIMESTAMP (buffer); if (GST_BUFFER_DURATION_IS_VALID (buffer)) { *end = *start + GST_BUFFER_DURATION (buffer); } else { *end = *start + self->buffer_time; } *start += self->latency; *end += self->latency; } }
static GstFlowReturn gst_wasapi_sink_render (GstBaseSink * sink, GstBuffer * buffer) { GstWasapiSink *self = GST_WASAPI_SINK (sink); GstFlowReturn ret = GST_FLOW_OK; HRESULT hr; gint16 *src = (gint16 *) GST_BUFFER_DATA (buffer); gint16 *dst = NULL; guint nsamples = GST_BUFFER_SIZE (buffer) / sizeof (gint16); guint i; WaitForSingleObject (self->event_handle, INFINITE); hr = IAudioRenderClient_GetBuffer (self->render_client, nsamples, (BYTE **) & dst); if (hr != S_OK) { GST_ELEMENT_ERROR (self, RESOURCE, WRITE, (NULL), ("IAudioRenderClient::GetBuffer () failed: %s", gst_wasapi_util_hresult_to_string (hr))); ret = GST_FLOW_ERROR; goto beach; } for (i = 0; i < nsamples; i++) { dst[0] = *src; dst[1] = *src; src++; dst += 2; } hr = IAudioRenderClient_ReleaseBuffer (self->render_client, nsamples, 0); if (hr != S_OK) { GST_ERROR_OBJECT (self, "IAudioRenderClient::ReleaseBuffer () failed: %s", gst_wasapi_util_hresult_to_string (hr)); ret = GST_FLOW_ERROR; goto beach; } beach: return ret; }
static gboolean gst_wasapi_sink_open (GstAudioSink * asink) { GstWasapiSink *self = GST_WASAPI_SINK (asink); gboolean res = FALSE; IAudioClient *client = NULL; if (!gst_wasapi_util_get_default_device_client (GST_ELEMENT (self), FALSE, &client)) { GST_ELEMENT_ERROR (self, RESOURCE, OPEN_READ, (NULL), ("Failed to get default device")); goto beach; } self->client = client; res = TRUE; beach: return res; }
static void gst_wasapi_sink_reset (GstAudioSink * asink) { GstWasapiSink *self = GST_WASAPI_SINK (asink); HRESULT hr; if (self->client) { hr = IAudioClient_Stop (self->client); if (hr != S_OK) { GST_ERROR_OBJECT (self, "IAudioClient::Stop () failed: %s", gst_wasapi_util_hresult_to_string (hr)); return; } hr = IAudioClient_Reset (self->client); if (hr != S_OK) { GST_ERROR_OBJECT (self, "IAudioClient::Reset () failed: %s", gst_wasapi_util_hresult_to_string (hr)); return; } } }
static gint gst_wasapi_sink_write (GstAudioSink * asink, gpointer data, guint length) { GstWasapiSink *self = GST_WASAPI_SINK (asink); HRESULT hr; gint16 *dst = NULL; guint nsamples; nsamples = length / self->info.bpf; WaitForSingleObject (self->event_handle, INFINITE); hr = IAudioRenderClient_GetBuffer (self->render_client, nsamples, (BYTE **) & dst); if (hr != S_OK) { GST_ELEMENT_ERROR (self, RESOURCE, WRITE, (NULL), ("IAudioRenderClient::GetBuffer () failed: %s", gst_wasapi_util_hresult_to_string (hr))); length = 0; goto beach; } memcpy (dst, data, length); hr = IAudioRenderClient_ReleaseBuffer (self->render_client, nsamples, 0); if (hr != S_OK) { GST_ERROR_OBJECT (self, "IAudioRenderClient::ReleaseBuffer () failed: %s", gst_wasapi_util_hresult_to_string (hr)); length = 0; goto beach; } beach: return length; }
static gboolean gst_wasapi_sink_prepare (GstAudioSink * asink, GstAudioRingBufferSpec * spec) { GstWasapiSink *self = GST_WASAPI_SINK (asink); gboolean res = FALSE; HRESULT hr; REFERENCE_TIME latency_rt, def_period, min_period; WAVEFORMATEXTENSIBLE format; IAudioRenderClient *render_client = NULL; hr = IAudioClient_GetDevicePeriod (self->client, &def_period, &min_period); if (hr != S_OK) { GST_ERROR_OBJECT (self, "IAudioClient::GetDevicePeriod () failed"); goto beach; } gst_wasapi_util_audio_info_to_waveformatex (&spec->info, &format); self->info = spec->info; hr = IAudioClient_Initialize (self->client, AUDCLNT_SHAREMODE_SHARED, AUDCLNT_STREAMFLAGS_EVENTCALLBACK, spec->buffer_time / 100, 0, (WAVEFORMATEX *) & format, NULL); if (hr != S_OK) { GST_ELEMENT_ERROR (self, RESOURCE, OPEN_READ, (NULL), ("IAudioClient::Initialize () failed: %s", gst_wasapi_util_hresult_to_string (hr))); goto beach; } hr = IAudioClient_GetStreamLatency (self->client, &latency_rt); if (hr != S_OK) { GST_ERROR_OBJECT (self, "IAudioClient::GetStreamLatency () failed"); goto beach; } GST_INFO_OBJECT (self, "default period: %d (%d ms), " "minimum period: %d (%d ms), " "latency: %d (%d ms)", (guint32) def_period, (guint32) def_period / 10000, (guint32) min_period, (guint32) min_period / 10000, (guint32) latency_rt, (guint32) latency_rt / 10000); /* FIXME: What to do with the latency? */ hr = IAudioClient_SetEventHandle (self->client, self->event_handle); if (hr != S_OK) { GST_ERROR_OBJECT (self, "IAudioClient::SetEventHandle () failed"); goto beach; } if (!gst_wasapi_util_get_render_client (GST_ELEMENT (self), self->client, &render_client)) { goto beach; } hr = IAudioClient_Start (self->client); if (hr != S_OK) { GST_ERROR_OBJECT (self, "IAudioClient::Start failed"); goto beach; } self->render_client = render_client; render_client = NULL; res = TRUE; beach: if (render_client != NULL) IUnknown_Release (render_client); return res; }