static gboolean gst_pulsesrc_create_stream (GstPulseSrc * pulsesrc, GstCaps * caps) { pa_channel_map channel_map; GstStructure *s; gboolean need_channel_layout = FALSE; GstRingBufferSpec spec; const gchar *name; memset (&spec, 0, sizeof (GstRingBufferSpec)); spec.latency_time = GST_SECOND; if (!gst_ring_buffer_parse_caps (&spec, caps)) { GST_ELEMENT_ERROR (pulsesrc, RESOURCE, SETTINGS, ("Can't parse caps."), (NULL)); goto fail; } /* Keep the refcount of the caps at 1 to make them writable */ gst_caps_unref (spec.caps); if (!gst_pulse_fill_sample_spec (&spec, &pulsesrc->sample_spec)) { GST_ELEMENT_ERROR (pulsesrc, RESOURCE, SETTINGS, ("Invalid sample specification."), (NULL)); goto fail; } pa_threaded_mainloop_lock (pulsesrc->mainloop); if (!pulsesrc->context) { GST_ELEMENT_ERROR (pulsesrc, RESOURCE, FAILED, ("Bad context"), (NULL)); goto unlock_and_fail; } s = gst_caps_get_structure (caps, 0); if (!gst_structure_has_field (s, "channel-layout") || !gst_pulse_gst_to_channel_map (&channel_map, &spec)) { if (spec.channels == 1) pa_channel_map_init_mono (&channel_map); else if (spec.channels == 2) pa_channel_map_init_stereo (&channel_map); else need_channel_layout = TRUE; } 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))) { GST_ELEMENT_ERROR (pulsesrc, RESOURCE, FAILED, ("Failed to create stream: %s", pa_strerror (pa_context_errno (pulsesrc->context))), (NULL)); goto unlock_and_fail; } } else if (!(pulsesrc->stream = pa_stream_new (pulsesrc->context, name, &pulsesrc->sample_spec, (need_channel_layout) ? NULL : &channel_map))) { GST_ELEMENT_ERROR (pulsesrc, RESOURCE, FAILED, ("Failed to create stream: %s", pa_strerror (pa_context_errno (pulsesrc->context))), (NULL)); goto unlock_and_fail; } if (need_channel_layout) { const pa_channel_map *m = pa_stream_get_channel_map (pulsesrc->stream); gst_pulse_channel_map_to_gst (m, &spec); caps = spec.caps; } 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; unlock_and_fail: gst_pulsesrc_destroy_stream (pulsesrc); pa_threaded_mainloop_unlock (pulsesrc->mainloop); fail: return FALSE; }
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; } }