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-rw-r--r--src/modules/macosx/module-coreaudio-device.c866
1 files changed, 866 insertions, 0 deletions
diff --git a/src/modules/macosx/module-coreaudio-device.c b/src/modules/macosx/module-coreaudio-device.c
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+++ b/src/modules/macosx/module-coreaudio-device.c
@@ -0,0 +1,866 @@
+/***
+ This file is part of PulseAudio.
+
+ Copyright 2009,2010 Daniel Mack <daniel@caiaq.de>
+
+ PulseAudio is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as published
+ by the Free Software Foundation; either version 2.1 of the License,
+ or (at your option) any later version.
+
+ PulseAudio 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
+ General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with PulseAudio; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ USA.
+***/
+
+/* TODO:
+ - implement hardware volume controls
+ - handle audio device stream format changes (will require changes to the core)
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <pulse/xmalloc.h>
+#include <pulse/util.h>
+
+#include <pulsecore/core-error.h>
+#include <pulsecore/sink.h>
+#include <pulsecore/source.h>
+#include <pulsecore/module.h>
+#include <pulsecore/sample-util.h>
+#include <pulsecore/core-util.h>
+#include <pulsecore/modargs.h>
+#include <pulsecore/log.h>
+#include <pulsecore/macro.h>
+#include <pulsecore/llist.h>
+#include <pulsecore/card.h>
+#include <pulsecore/strbuf.h>
+#include <pulsecore/thread.h>
+#include <pulsecore/thread-mq.h>
+
+#include <CoreAudio/CoreAudio.h>
+#include <CoreAudio/CoreAudioTypes.h>
+#include <CoreAudio/AudioHardware.h>
+
+#include "module-coreaudio-device-symdef.h"
+
+#define DEFAULT_FRAMES_PER_IOPROC 512
+
+PA_MODULE_AUTHOR("Daniel Mack");
+PA_MODULE_DESCRIPTION("CoreAudio device");
+PA_MODULE_VERSION(PACKAGE_VERSION);
+PA_MODULE_LOAD_ONCE(FALSE);
+PA_MODULE_USAGE("object_id=<the CoreAudio device id> "
+ "ioproc_frames=<audio frames per IOProc call> ");
+
+static const char* const valid_modargs[] = {
+ "object_id",
+ "ioproc_frames",
+ NULL
+};
+
+enum {
+ CA_MESSAGE_RENDER = PA_SINK_MESSAGE_MAX,
+};
+
+typedef struct coreaudio_sink coreaudio_sink;
+typedef struct coreaudio_source coreaudio_source;
+
+struct userdata {
+ AudioObjectID object_id;
+ AudioDeviceIOProcID proc_id;
+
+ pa_thread_mq thread_mq;
+ pa_asyncmsgq *async_msgq;
+
+ pa_rtpoll *rtpoll;
+ pa_thread *thread;
+
+ pa_module *module;
+ pa_card *card;
+ pa_bool_t running;
+
+ char *device_name, *vendor_name;
+
+ const AudioBufferList *render_input_data;
+ AudioBufferList *render_output_data;
+
+ AudioStreamBasicDescription stream_description;
+
+ PA_LLIST_HEAD(coreaudio_sink, sinks);
+ PA_LLIST_HEAD(coreaudio_source, sources);
+};
+
+struct coreaudio_sink {
+ pa_sink *pa_sink;
+ struct userdata *userdata;
+
+ char *name;
+ unsigned int channel_idx;
+ pa_bool_t active;
+
+ pa_channel_map map;
+ pa_sample_spec ss;
+
+ PA_LLIST_FIELDS(coreaudio_sink);
+};
+
+struct coreaudio_source {
+ pa_source *pa_source;
+ struct userdata *userdata;
+
+ char *name;
+ unsigned int channel_idx;
+ pa_bool_t active;
+
+ pa_channel_map map;
+ pa_sample_spec ss;
+
+ PA_LLIST_FIELDS(coreaudio_source);
+};
+
+static OSStatus io_render_proc (AudioDeviceID device,
+ const AudioTimeStamp *now,
+ const AudioBufferList *inputData,
+ const AudioTimeStamp *inputTime,
+ AudioBufferList *outputData,
+ const AudioTimeStamp *outputTime,
+ void *clientData)
+{
+ struct userdata *u = clientData;
+
+ pa_assert(u);
+ pa_assert(device == u->object_id);
+
+ u->render_input_data = inputData;
+ u->render_output_data = outputData;
+
+ if (u->sinks)
+ pa_assert_se(pa_asyncmsgq_send(u->async_msgq, PA_MSGOBJECT(u->sinks->pa_sink),
+ CA_MESSAGE_RENDER, NULL, 0, NULL) == 0);
+
+ if (u->sources)
+ pa_assert_se(pa_asyncmsgq_send(u->async_msgq, PA_MSGOBJECT(u->sources->pa_source),
+ CA_MESSAGE_RENDER, NULL, 0, NULL) == 0);
+
+ return 0;
+}
+
+static OSStatus ca_stream_format_changed(AudioObjectID objectID,
+ UInt32 numberAddresses,
+ const AudioObjectPropertyAddress addresses[],
+ void *clientData)
+{
+ struct userdata *u = clientData;
+ UInt32 i;
+
+ pa_assert(u);
+
+ /* REVISIT: PA can't currently handle external format change requests.
+ * Hence, we set the original format back in this callback to avoid horrible audio artefacts.
+ * The device settings will appear to be 'locked' for any application as long as the PA daemon is running.
+ * Once we're able to propagate such events up in the core, this needs to be changed. */
+
+ for (i = 0; i < numberAddresses; i++)
+ AudioObjectSetPropertyData(objectID, addresses + i, 0, NULL, sizeof(u->stream_description), &u->stream_description);
+
+ return 0;
+}
+
+static pa_usec_t get_latency_us(pa_object *o) {
+ struct userdata *u;
+ pa_sample_spec *ss;
+ bool is_source;
+ UInt32 v, total = 0;
+ UInt32 err, size = sizeof(v);
+ AudioObjectPropertyAddress property_address;
+ AudioObjectID stream_id;
+
+ if (pa_sink_isinstance(o)) {
+ coreaudio_sink *sink = PA_SINK(o)->userdata;
+
+ u = sink->userdata;
+ ss = &sink->ss;
+ is_source = FALSE;
+ } else if (pa_source_isinstance(o)) {
+ coreaudio_source *source = PA_SOURCE(o)->userdata;
+
+ u = source->userdata;
+ ss = &source->ss;
+ is_source = TRUE;
+ } else
+ pa_assert_not_reached();
+
+ pa_assert(u);
+
+ property_address.mScope = kAudioObjectPropertyScopeGlobal;
+ property_address.mElement = kAudioObjectPropertyElementMaster;
+
+ /* get the device latency */
+ property_address.mSelector = kAudioDevicePropertyLatency;
+ size = sizeof(total);
+ AudioObjectGetPropertyData(u->object_id, &property_address, 0, NULL, &size, &total);
+ total += v;
+
+ /* the the IOProc buffer size */
+ property_address.mSelector = kAudioDevicePropertyBufferFrameSize;
+ size = sizeof(v);
+ AudioObjectGetPropertyData(u->object_id, &property_address, 0, NULL, &size, &v);
+ total += v;
+
+ /* IOProc safety offset - this value is the same for both directions, hence we divide it by 2 */
+ property_address.mSelector = kAudioDevicePropertySafetyOffset;
+ size = sizeof(v);
+ AudioObjectGetPropertyData(u->object_id, &property_address, 0, NULL, &size, &v);
+ total += v / 2;
+
+ /* get the stream latency.
+ * FIXME: this assumes the stream latency is the same for all streams */
+ property_address.mSelector = kAudioDevicePropertyStreams;
+ size = sizeof(stream_id);
+ err = AudioObjectGetPropertyData(u->object_id, &property_address, 0, NULL, &size, &stream_id);
+ if (!err) {
+ property_address.mSelector = kAudioStreamPropertyLatency;
+ size = sizeof(v);
+ err = AudioObjectGetPropertyData(stream_id, &property_address, 0, NULL, &size, &v);
+ if (!err)
+ total += v;
+ }
+
+ return pa_bytes_to_usec(total * pa_frame_size(ss), ss);
+}
+
+static void ca_device_check_device_state(struct userdata *u) {
+ coreaudio_sink *ca_sink;
+ coreaudio_source *ca_source;
+ pa_bool_t active = FALSE;
+
+ pa_assert(u);
+
+ for (ca_sink = u->sinks; ca_sink; ca_sink = ca_sink->next)
+ if (ca_sink->active)
+ active = TRUE;
+
+ for (ca_source = u->sources; ca_source; ca_source = ca_source->next)
+ if (ca_source->active)
+ active = TRUE;
+
+ if (active && !u->running)
+ AudioDeviceStart(u->object_id, u->proc_id);
+ else if (!active && u->running)
+ AudioDeviceStop(u->object_id, u->proc_id);
+
+ u->running = active;
+}
+
+static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
+ coreaudio_sink *sink = PA_SINK(o)->userdata;
+ struct userdata *u = sink->userdata;
+ unsigned int i;
+ pa_memchunk audio_chunk;
+
+ switch (code) {
+ case CA_MESSAGE_RENDER: {
+ /* audio out */
+ for (i = 0; i < u->render_output_data->mNumberBuffers; i++) {
+ AudioBuffer *buf = u->render_output_data->mBuffers + i;
+
+ pa_assert(sink);
+
+ if (PA_SINK_IS_OPENED(sink->pa_sink->thread_info.state)) {
+ if (sink->pa_sink->thread_info.rewind_requested)
+ pa_sink_process_rewind(sink->pa_sink, 0);
+
+ audio_chunk.memblock = pa_memblock_new_fixed(u->module->core->mempool, buf->mData, buf->mDataByteSize, FALSE);
+ audio_chunk.length = buf->mDataByteSize;
+ audio_chunk.index = 0;
+
+ pa_sink_render_into_full(sink->pa_sink, &audio_chunk);
+ pa_memblock_unref_fixed(audio_chunk.memblock);
+ }
+
+ sink = sink->next;
+ }
+
+ return 0;
+ }
+
+ case PA_SINK_MESSAGE_GET_LATENCY: {
+ *((pa_usec_t *) data) = get_latency_us(PA_OBJECT(o));
+ return 0;
+ }
+
+ case PA_SINK_MESSAGE_SET_STATE:
+ switch ((pa_sink_state_t) PA_PTR_TO_UINT(data)) {
+ case PA_SINK_SUSPENDED:
+ case PA_SINK_IDLE:
+ sink->active = FALSE;
+ break;
+
+ case PA_SINK_RUNNING:
+ sink->active = TRUE;
+ break;
+
+ case PA_SINK_UNLINKED:
+ case PA_SINK_INIT:
+ case PA_SINK_INVALID_STATE:
+ ;
+ }
+
+ ca_device_check_device_state(sink->userdata);
+ break;
+ }
+
+ return pa_sink_process_msg(o, code, data, offset, chunk);
+}
+
+static int source_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
+ coreaudio_source *source = PA_SOURCE(o)->userdata;
+ struct userdata *u = source->userdata;
+ unsigned int i;
+ pa_memchunk audio_chunk;
+
+ switch (code) {
+ case CA_MESSAGE_RENDER: {
+ /* audio in */
+ for (i = 0; i < u->render_input_data->mNumberBuffers; i++) {
+ const AudioBuffer *buf = u->render_input_data->mBuffers + i;
+
+ pa_assert(source);
+
+ if (PA_SOURCE_IS_OPENED(source->pa_source->thread_info.state)) {
+ audio_chunk.memblock = pa_memblock_new_fixed(u->module->core->mempool, buf->mData, buf->mDataByteSize, TRUE);
+ audio_chunk.length = buf->mDataByteSize;
+ audio_chunk.index = 0;
+
+ pa_source_post(source->pa_source, &audio_chunk);
+ pa_memblock_unref_fixed(audio_chunk.memblock);
+ }
+
+ source = source->next;
+ }
+
+ return 0;
+ }
+
+ case PA_SOURCE_MESSAGE_GET_LATENCY: {
+ *((pa_usec_t *) data) = get_latency_us(PA_OBJECT(o));
+ return 0;
+ }
+
+ case PA_SOURCE_MESSAGE_SET_STATE:
+ switch ((pa_source_state_t) PA_PTR_TO_UINT(data)) {
+ case PA_SOURCE_SUSPENDED:
+ case PA_SOURCE_IDLE:
+ source->active = FALSE;
+ break;
+
+ case PA_SOURCE_RUNNING:
+ source->active = TRUE;
+ break;
+
+ case PA_SOURCE_UNLINKED:
+ case PA_SOURCE_INIT:
+ case PA_SOURCE_INVALID_STATE:
+ ;
+ }
+
+ ca_device_check_device_state(source->userdata);
+ break;
+ }
+
+ return pa_source_process_msg(o, code, data, offset, chunk);
+}
+
+static int ca_device_create_sink(pa_module *m, AudioBuffer *buf, int channel_idx) {
+ OSStatus err;
+ UInt32 size;
+ struct userdata *u = m->userdata;
+ pa_sink_new_data new_data;
+ pa_sink_flags_t flags = PA_SINK_LATENCY | PA_SINK_HARDWARE;
+ coreaudio_sink *ca_sink;
+ pa_sink *sink;
+ unsigned int i;
+ char tmp[255];
+ pa_strbuf *strbuf;
+ AudioObjectPropertyAddress property_address;
+
+ ca_sink = pa_xnew0(coreaudio_sink, 1);
+ ca_sink->map.channels = buf->mNumberChannels;
+ ca_sink->ss.channels = buf->mNumberChannels;
+ ca_sink->channel_idx = channel_idx;
+
+ /* build a name for this stream */
+ strbuf = pa_strbuf_new();
+
+ for (i = 0; i < buf->mNumberChannels; i++) {
+ property_address.mSelector = kAudioObjectPropertyElementName;
+ property_address.mScope = kAudioDevicePropertyScopeOutput;
+ property_address.mElement = channel_idx + i + 1;
+ size = sizeof(tmp);
+ err = AudioObjectGetPropertyData(u->object_id, &property_address, 0, NULL, &size, tmp);
+ if (err || !strlen(tmp))
+ snprintf(tmp, sizeof(tmp), "Channel %d", property_address.mElement);
+
+ if (i > 0)
+ pa_strbuf_puts(strbuf, ", ");
+
+ pa_strbuf_puts(strbuf, tmp);
+ }
+
+ ca_sink->name = pa_strbuf_tostring_free(strbuf);
+
+ pa_log_debug("Stream name is >%s<", ca_sink->name);
+
+ /* default to mono streams */
+ for (i = 0; i < ca_sink->map.channels; i++)
+ ca_sink->map.map[i] = PA_CHANNEL_POSITION_MONO;
+
+ if (buf->mNumberChannels == 2) {
+ ca_sink->map.map[0] = PA_CHANNEL_POSITION_LEFT;
+ ca_sink->map.map[1] = PA_CHANNEL_POSITION_RIGHT;
+ }
+
+ ca_sink->ss.rate = u->stream_description.mSampleRate;
+ ca_sink->ss.format = PA_SAMPLE_FLOAT32LE;
+
+ pa_sink_new_data_init(&new_data);
+ new_data.card = u->card;
+ new_data.driver = __FILE__;
+ new_data.module = u->module;
+ new_data.namereg_fail = FALSE;
+ pa_sink_new_data_set_name(&new_data, ca_sink->name);
+ pa_sink_new_data_set_channel_map(&new_data, &ca_sink->map);
+ pa_sink_new_data_set_sample_spec(&new_data, &ca_sink->ss);
+ pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_STRING, u->device_name);
+ pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_PRODUCT_NAME, u->device_name);
+ pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_DESCRIPTION, u->device_name);
+ pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_ACCESS_MODE, "mmap");
+ pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_CLASS, "sound");
+ pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_API, "CoreAudio");
+ pa_proplist_setf(new_data.proplist, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE, "%lu", (unsigned long) buf->mDataByteSize);
+
+ if (u->vendor_name)
+ pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_VENDOR_NAME, u->vendor_name);
+
+ sink = pa_sink_new(m->core, &new_data, flags);
+ pa_sink_new_data_done(&new_data);
+
+ if (!sink) {
+ pa_log("unable to create sink.");
+ return -1;
+ }
+
+ sink->parent.process_msg = sink_process_msg;
+ sink->userdata = ca_sink;
+
+ pa_sink_set_asyncmsgq(sink, u->thread_mq.inq);
+ pa_sink_set_rtpoll(sink, u->rtpoll);
+
+ ca_sink->pa_sink = sink;
+ ca_sink->userdata = u;
+
+ PA_LLIST_PREPEND(coreaudio_sink, u->sinks, ca_sink);
+
+ return 0;
+}
+
+static int ca_device_create_source(pa_module *m, AudioBuffer *buf, int channel_idx) {
+ OSStatus err;
+ UInt32 size;
+ struct userdata *u = m->userdata;
+ pa_source_new_data new_data;
+ pa_source_flags_t flags = PA_SOURCE_LATENCY | PA_SOURCE_HARDWARE;
+ coreaudio_source *ca_source;
+ pa_source *source;
+ unsigned int i;
+ char tmp[255];
+ pa_strbuf *strbuf;
+ AudioObjectPropertyAddress property_address;
+
+ ca_source = pa_xnew0(coreaudio_source, 1);
+ ca_source->map.channels = buf->mNumberChannels;
+ ca_source->ss.channels = buf->mNumberChannels;
+ ca_source->channel_idx = channel_idx;
+
+ /* build a name for this stream */
+ strbuf = pa_strbuf_new();
+
+ for (i = 0; i < buf->mNumberChannels; i++) {
+ property_address.mSelector = kAudioObjectPropertyElementName;
+ property_address.mScope = kAudioDevicePropertyScopeInput;
+ property_address.mElement = channel_idx + i + 1;
+ size = sizeof(tmp);
+ err = AudioObjectGetPropertyData(u->object_id, &property_address, 0, NULL, &size, tmp);
+ if (err || !strlen(tmp))
+ snprintf(tmp, sizeof(tmp), "Channel %d", property_address.mElement);
+
+ if (i > 0)
+ pa_strbuf_puts(strbuf, ", ");
+
+ pa_strbuf_puts(strbuf, tmp);
+ }
+
+ ca_source->name = pa_strbuf_tostring_free(strbuf);
+
+ pa_log_debug("Stream name is >%s<", ca_source->name);
+
+ /* default to mono streams */
+ for (i = 0; i < ca_source->map.channels; i++)
+ ca_source->map.map[i] = PA_CHANNEL_POSITION_MONO;
+
+ if (buf->mNumberChannels == 2) {
+ ca_source->map.map[0] = PA_CHANNEL_POSITION_LEFT;
+ ca_source->map.map[1] = PA_CHANNEL_POSITION_RIGHT;
+ }
+
+ ca_source->ss.rate = u->stream_description.mSampleRate;
+ ca_source->ss.format = PA_SAMPLE_FLOAT32LE;
+
+ pa_source_new_data_init(&new_data);
+ new_data.card = u->card;
+ new_data.driver = __FILE__;
+ new_data.module = u->module;
+ new_data.namereg_fail = FALSE;
+ pa_source_new_data_set_name(&new_data, ca_source->name);
+ pa_source_new_data_set_channel_map(&new_data, &ca_source->map);
+ pa_source_new_data_set_sample_spec(&new_data, &ca_source->ss);
+ pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_STRING, u->device_name);
+ pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_PRODUCT_NAME, u->device_name);
+ pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_DESCRIPTION, u->device_name);
+ pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_ACCESS_MODE, "mmap");
+ pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_CLASS, "sound");
+ pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_API, "CoreAudio");
+ pa_proplist_setf(new_data.proplist, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE, "%lu", (unsigned long) buf->mDataByteSize);
+
+ if (u->vendor_name)
+ pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_VENDOR_NAME, u->vendor_name);
+
+ source = pa_source_new(m->core, &new_data, flags);
+ pa_source_new_data_done(&new_data);
+
+ if (!source) {
+ pa_log("unable to create source.");
+ return -1;
+ }
+
+ source->parent.process_msg = source_process_msg;
+ source->userdata = ca_source;
+
+ pa_source_set_asyncmsgq(source, u->thread_mq.inq);
+ pa_source_set_rtpoll(source, u->rtpoll);
+
+ ca_source->pa_source = source;
+ ca_source->userdata = u;
+
+ PA_LLIST_PREPEND(coreaudio_source, u->sources, ca_source);
+
+ return 0;
+}
+
+static int ca_device_create_streams(pa_module *m, bool direction_in) {
+ OSStatus err;
+ UInt32 size, i, channel_idx;
+ struct userdata *u = m->userdata;
+ AudioBufferList *buffer_list;
+ AudioObjectPropertyAddress property_address;
+
+ property_address.mScope = direction_in ? kAudioDevicePropertyScopeInput : kAudioDevicePropertyScopeOutput;
+ property_address.mElement = kAudioObjectPropertyElementMaster;
+
+ /* get current stream format */
+ size = sizeof(AudioStreamBasicDescription);
+ property_address.mSelector = kAudioDevicePropertyStreamFormat;
+ err = AudioObjectGetPropertyData(u->object_id, &property_address, 0, NULL, &size, &u->stream_description);
+ if (err) {
+ /* no appropriate streams found - silently bail. */
+ return -1;
+ }
+
+ if (u->stream_description.mFormatID != kAudioFormatLinearPCM) {
+ pa_log("Unsupported audio format '%c%c%c%c'",
+ (char) (u->stream_description.mFormatID >> 24),
+ (char) (u->stream_description.mFormatID >> 16) & 0xff,
+ (char) (u->stream_description.mFormatID >> 8) & 0xff,
+ (char) (u->stream_description.mFormatID & 0xff));
+ return -1;
+ }
+
+ /* get stream configuration */
+ size = 0;
+ property_address.mSelector = kAudioDevicePropertyStreamConfiguration;
+ err = AudioObjectGetPropertyDataSize(u->object_id, &property_address, 0, NULL, &size);
+ if (err) {
+ pa_log("Failed to get kAudioDevicePropertyStreamConfiguration (%s).", direction_in ? "input" : "output");
+ return -1;
+ }
+
+ if (!size)
+ return 0;
+
+ buffer_list = (AudioBufferList *) pa_xmalloc(size);
+ err = AudioObjectGetPropertyData(u->object_id, &property_address, 0, NULL, &size, buffer_list);
+
+ if (!err) {
+ pa_log_debug("Sample rate: %f", u->stream_description.mSampleRate);
+ pa_log_debug("%d bytes per packet", (unsigned int) u->stream_description.mBytesPerPacket);
+ pa_log_debug("%d frames per packet", (unsigned int) u->stream_description.mFramesPerPacket);
+ pa_log_debug("%d bytes per frame", (unsigned int) u->stream_description.mBytesPerFrame);
+ pa_log_debug("%d channels per frame", (unsigned int) u->stream_description.mChannelsPerFrame);
+ pa_log_debug("%d bits per channel", (unsigned int) u->stream_description.mBitsPerChannel);
+
+ for (channel_idx = 0, i = 0; i < buffer_list->mNumberBuffers; i++) {
+ AudioBuffer *buf = buffer_list->mBuffers + i;
+
+ if (direction_in)
+ ca_device_create_source(m, buf, channel_idx);
+ else
+ ca_device_create_sink(m, buf, channel_idx);
+
+ channel_idx += buf->mNumberChannels;
+ }
+ }
+
+ pa_xfree(buffer_list);
+ return 0;
+}
+
+static void thread_func(void *userdata) {
+ struct userdata *u = userdata;
+
+ pa_assert(u);
+ pa_assert(u->module);
+ pa_assert(u->module->core);
+
+ pa_log_debug("Thread starting up");
+
+ if (u->module->core->realtime_scheduling)
+ pa_make_realtime(u->module->core->realtime_priority);
+
+ pa_thread_mq_install(&u->thread_mq);
+
+ for (;;) {
+ int ret;
+
+ ret = pa_rtpoll_run(u->rtpoll, TRUE);
+
+ if (ret < 0)
+ goto fail;
+
+ if (ret == 0)
+ goto finish;
+ }
+
+fail:
+ /* If this was no regular exit from the loop we have to continue
+ * processing messages until we received PA_MESSAGE_SHUTDOWN */
+ pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->module->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
+ pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
+
+finish:
+ pa_log_debug("Thread shutting down");
+}
+
+int pa__init(pa_module *m) {
+ OSStatus err;
+ UInt32 size, frames;
+ struct userdata *u = NULL;
+ pa_modargs *ma = NULL;
+ char tmp[64];
+ pa_card_new_data card_new_data;
+ coreaudio_sink *ca_sink;
+ coreaudio_source *ca_source;
+ AudioObjectPropertyAddress property_address;
+
+ pa_assert(m);
+
+ if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
+ pa_log("Failed to parse module arguments.");
+ goto fail;
+ }
+
+ u = pa_xnew0(struct userdata, 1);
+ u->module = m;
+ m->userdata = u;
+
+ if (pa_modargs_get_value_u32(ma, "object_id", (unsigned int *) &u->object_id) != 0) {
+ pa_log("Failed to parse object_id argument.");
+ goto fail;
+ }
+
+ property_address.mScope = kAudioObjectPropertyScopeGlobal;
+ property_address.mElement = kAudioObjectPropertyElementMaster;
+
+ /* get device product name */
+ property_address.mSelector = kAudioDevicePropertyDeviceName;
+ size = sizeof(tmp);
+ err = AudioObjectGetPropertyData(u->object_id, &property_address, 0, NULL, &size, tmp);
+ if (err) {
+ pa_log("Failed to get kAudioDevicePropertyDeviceName (err = %08x).", (int) err);
+ goto fail;
+ }
+
+ u->device_name = pa_xstrdup(tmp);
+
+ pa_card_new_data_init(&card_new_data);
+ pa_proplist_sets(card_new_data.proplist, PA_PROP_DEVICE_STRING, tmp);
+ card_new_data.driver = __FILE__;
+ pa_card_new_data_set_name(&card_new_data, tmp);
+ pa_log_info("Initializing module for CoreAudio device '%s' (id %d)", tmp, (unsigned int) u->object_id);
+
+ /* get device vendor name (may fail) */
+ property_address.mSelector = kAudioDevicePropertyDeviceManufacturer;
+ size = sizeof(tmp);
+ err = AudioObjectGetPropertyData(u->object_id, &property_address, 0, NULL, &size, tmp);
+ if (!err)
+ u->vendor_name = pa_xstrdup(tmp);
+
+ /* create the card object */
+ u->card = pa_card_new(m->core, &card_new_data);
+ if (!u->card) {
+ pa_log("Unable to create card.\n");
+ goto fail;
+ }
+
+ pa_card_new_data_done(&card_new_data);
+ u->card->userdata = u;
+
+ u->rtpoll = pa_rtpoll_new();
+ pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll);
+ u->async_msgq = pa_asyncmsgq_new(0);
+ pa_rtpoll_item_new_asyncmsgq_read(u->rtpoll, PA_RTPOLL_EARLY-1, u->async_msgq);
+
+ PA_LLIST_HEAD_INIT(coreaudio_sink, u->sinks);
+
+ /* create sinks */
+ ca_device_create_streams(m, FALSE);
+
+ /* create sources */
+ ca_device_create_streams(m, TRUE);
+
+ /* create the message thread */
+ if (!(u->thread = pa_thread_new("coreaudio", thread_func, u))) {
+ pa_log("Failed to create thread.");
+ goto fail;
+ }
+
+ /* register notification callback for stream format changes */
+ property_address.mSelector = kAudioDevicePropertyStreamFormat;
+ property_address.mScope = kAudioObjectPropertyScopeGlobal;
+ property_address.mElement = kAudioObjectPropertyElementMaster;
+
+ AudioObjectAddPropertyListener(u->object_id, &property_address, ca_stream_format_changed, u);
+
+ /* set number of frames in IOProc */
+ frames = DEFAULT_FRAMES_PER_IOPROC;
+ pa_modargs_get_value_u32(ma, "ioproc_frames", (unsigned int *) &frames);
+
+ property_address.mSelector = kAudioDevicePropertyBufferFrameSize;
+ AudioObjectSetPropertyData(u->object_id, &property_address, 0, NULL, sizeof(frames), &frames);
+ pa_log_debug("%u frames per IOProc\n", (unsigned int) frames);
+
+ /* create one ioproc for both directions */
+ err = AudioDeviceCreateIOProcID(u->object_id, io_render_proc, u, &u->proc_id);
+ if (err) {
+ pa_log("AudioDeviceCreateIOProcID() failed (err = %08x\n).", (int) err);
+ goto fail;
+ }
+
+ for (ca_sink = u->sinks; ca_sink; ca_sink = ca_sink->next)
+ pa_sink_put(ca_sink->pa_sink);
+
+ for (ca_source = u->sources; ca_source; ca_source = ca_source->next)
+ pa_source_put(ca_source->pa_source);
+
+ pa_modargs_free(ma);
+
+ return 0;
+
+fail:
+ if (u)
+ pa__done(m);
+
+ if (ma)
+ pa_modargs_free(ma);
+
+ return -1;
+}
+
+void pa__done(pa_module *m) {
+ struct userdata *u;
+ coreaudio_sink *ca_sink;
+ coreaudio_source *ca_source;
+ AudioObjectPropertyAddress property_address;
+
+ pa_assert(m);
+
+ u = m->userdata;
+ pa_assert(u);
+
+ /* unlink sinks */
+ for (ca_sink = u->sinks; ca_sink; ca_sink = ca_sink->next)
+ if (ca_sink->pa_sink)
+ pa_sink_unlink(ca_sink->pa_sink);
+
+ /* unlink sources */
+ for (ca_source = u->sources; ca_source; ca_source = ca_source->next)
+ if (ca_source->pa_source)
+ pa_source_unlink(ca_source->pa_source);
+
+ if (u->thread) {
+ pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
+ pa_thread_free(u->thread);
+ pa_thread_mq_done(&u->thread_mq);
+ pa_asyncmsgq_unref(u->async_msgq);
+ }
+
+ /* free sinks */
+ for (ca_sink = u->sinks; ca_sink;) {
+ coreaudio_sink *next = ca_sink->next;
+
+ if (ca_sink->pa_sink)
+ pa_sink_unref(ca_sink->pa_sink);
+
+ pa_xfree(ca_sink->name);
+ pa_xfree(ca_sink);
+ ca_sink = next;
+ }
+
+ /* free sources */
+ for (ca_source = u->sources; ca_source;) {
+ coreaudio_source *next = ca_source->next;
+
+ if (ca_source->pa_source)
+ pa_source_unref(ca_source->pa_source);
+
+ pa_xfree(ca_source->name);
+ pa_xfree(ca_source);
+ ca_source = next;
+ }
+
+ if (u->proc_id) {
+ AudioDeviceStop(u->object_id, u->proc_id);
+ AudioDeviceDestroyIOProcID(u->object_id, u->proc_id);
+ }
+
+ property_address.mSelector = kAudioDevicePropertyStreamFormat;
+ property_address.mScope = kAudioObjectPropertyScopeGlobal;
+ property_address.mElement = kAudioObjectPropertyElementMaster;
+
+ AudioObjectRemovePropertyListener(kAudioObjectSystemObject, &property_address, ca_stream_format_changed, u);
+
+ pa_xfree(u->device_name);
+ pa_xfree(u->vendor_name);
+ pa_rtpoll_free(u->rtpoll);
+ pa_card_free(u->card);
+
+ pa_xfree(u);
+}