From 84eb95466b49453b45cdfef5bed4364cf0d3a299 Mon Sep 17 00:00:00 2001 From: Max Kellermann Date: Tue, 29 Jan 2013 16:59:21 +0100 Subject: output/osx: convert to C++ --- src/output/osx_output_plugin.c | 438 ----------------------------------------- 1 file changed, 438 deletions(-) delete mode 100644 src/output/osx_output_plugin.c (limited to 'src/output/osx_output_plugin.c') diff --git a/src/output/osx_output_plugin.c b/src/output/osx_output_plugin.c deleted file mode 100644 index 7b42589f7..000000000 --- a/src/output/osx_output_plugin.c +++ /dev/null @@ -1,438 +0,0 @@ -/* - * Copyright (C) 2003-2012 The Music Player Daemon Project - * http://www.musicpd.org - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program 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 General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include "config.h" -#include "osx_output_plugin.h" -#include "output_api.h" -#include "util/fifo_buffer.h" - -#include -#include -#include -#include - -#undef G_LOG_DOMAIN -#define G_LOG_DOMAIN "osx" - -struct osx_output { - struct audio_output base; - - /* configuration settings */ - OSType component_subtype; - /* only applicable with kAudioUnitSubType_HALOutput */ - const char *device_name; - - AudioUnit au; - GMutex *mutex; - GCond *condition; - - struct fifo_buffer *buffer; -}; - -/** - * The quark used for GError.domain. - */ -static inline GQuark -osx_output_quark(void) -{ - return g_quark_from_static_string("osx_output"); -} - -static bool -osx_output_test_default_device(void) -{ - /* on a Mac, this is always the default plugin, if nothing - else is configured */ - return true; -} - -static void -osx_output_configure(struct osx_output *oo, const struct config_param *param) -{ - const char *device = config_get_block_string(param, "device", NULL); - - if (device == NULL || 0 == strcmp(device, "default")) { - oo->component_subtype = kAudioUnitSubType_DefaultOutput; - oo->device_name = NULL; - } - else if (0 == strcmp(device, "system")) { - oo->component_subtype = kAudioUnitSubType_SystemOutput; - oo->device_name = NULL; - } - else { - oo->component_subtype = kAudioUnitSubType_HALOutput; - /* XXX am I supposed to g_strdup() this? */ - oo->device_name = device; - } -} - -static struct audio_output * -osx_output_init(const struct config_param *param, GError **error_r) -{ - struct osx_output *oo = g_new(struct osx_output, 1); - if (!ao_base_init(&oo->base, &osx_output_plugin, param, error_r)) { - g_free(oo); - return NULL; - } - - osx_output_configure(oo, param); - oo->mutex = g_mutex_new(); - oo->condition = g_cond_new(); - - return &oo->base; -} - -static void -osx_output_finish(struct audio_output *ao) -{ - struct osx_output *od = (struct osx_output *)ao; - - g_mutex_free(od->mutex); - g_cond_free(od->condition); - g_free(od); -} - -static bool -osx_output_set_device(struct osx_output *oo, GError **error) -{ - bool ret = true; - OSStatus status; - UInt32 size, numdevices; - AudioDeviceID *deviceids = NULL; - char name[256]; - unsigned int i; - - if (oo->component_subtype != kAudioUnitSubType_HALOutput) - goto done; - - /* how many audio devices are there? */ - status = AudioHardwareGetPropertyInfo(kAudioHardwarePropertyDevices, - &size, - NULL); - if (status != noErr) { - g_set_error(error, osx_output_quark(), status, - "Unable to determine number of OS X audio devices: %s", - GetMacOSStatusCommentString(status)); - ret = false; - goto done; - } - - /* what are the available audio device IDs? */ - numdevices = size / sizeof(AudioDeviceID); - deviceids = g_malloc(size); - status = AudioHardwareGetProperty(kAudioHardwarePropertyDevices, - &size, - deviceids); - if (status != noErr) { - g_set_error(error, osx_output_quark(), status, - "Unable to determine OS X audio device IDs: %s", - GetMacOSStatusCommentString(status)); - ret = false; - goto done; - } - - /* which audio device matches oo->device_name? */ - for (i = 0; i < numdevices; i++) { - size = sizeof(name); - status = AudioDeviceGetProperty(deviceids[i], 0, false, - kAudioDevicePropertyDeviceName, - &size, name); - if (status != noErr) { - g_set_error(error, osx_output_quark(), status, - "Unable to determine OS X device name " - "(device %u): %s", - (unsigned int) deviceids[i], - GetMacOSStatusCommentString(status)); - ret = false; - goto done; - } - if (strcmp(oo->device_name, name) == 0) { - g_debug("found matching device: ID=%u, name=%s", - (unsigned int) deviceids[i], name); - break; - } - } - if (i == numdevices) { - g_warning("Found no audio device with name '%s' " - "(will use default audio device)", - oo->device_name); - goto done; - } - - status = AudioUnitSetProperty(oo->au, - kAudioOutputUnitProperty_CurrentDevice, - kAudioUnitScope_Global, - 0, - &(deviceids[i]), - sizeof(AudioDeviceID)); - if (status != noErr) { - g_set_error(error, osx_output_quark(), status, - "Unable to set OS X audio output device: %s", - GetMacOSStatusCommentString(status)); - ret = false; - goto done; - } - g_debug("set OS X audio output device ID=%u, name=%s", - (unsigned int) deviceids[i], name); - -done: - if (deviceids != NULL) - g_free(deviceids); - return ret; -} - -static OSStatus -osx_render(void *vdata, - G_GNUC_UNUSED AudioUnitRenderActionFlags *io_action_flags, - G_GNUC_UNUSED const AudioTimeStamp *in_timestamp, - G_GNUC_UNUSED UInt32 in_bus_number, - G_GNUC_UNUSED UInt32 in_number_frames, - AudioBufferList *buffer_list) -{ - struct osx_output *od = (struct osx_output *) vdata; - AudioBuffer *buffer = &buffer_list->mBuffers[0]; - size_t buffer_size = buffer->mDataByteSize; - - assert(od->buffer != NULL); - - g_mutex_lock(od->mutex); - - size_t nbytes; - const void *src = fifo_buffer_read(od->buffer, &nbytes); - - if (src != NULL) { - if (nbytes > buffer_size) - nbytes = buffer_size; - - memcpy(buffer->mData, src, nbytes); - fifo_buffer_consume(od->buffer, nbytes); - } else - nbytes = 0; - - g_cond_signal(od->condition); - g_mutex_unlock(od->mutex); - - buffer->mDataByteSize = nbytes; - - unsigned i; - for (i = 1; i < buffer_list->mNumberBuffers; ++i) { - buffer = &buffer_list->mBuffers[i]; - buffer->mDataByteSize = 0; - } - - return 0; -} - -static bool -osx_output_enable(struct audio_output *ao, GError **error_r) -{ - struct osx_output *oo = (struct osx_output *)ao; - - ComponentDescription desc; - desc.componentType = kAudioUnitType_Output; - desc.componentSubType = oo->component_subtype; - desc.componentManufacturer = kAudioUnitManufacturer_Apple; - desc.componentFlags = 0; - desc.componentFlagsMask = 0; - - Component comp = FindNextComponent(NULL, &desc); - if (comp == 0) { - g_set_error(error_r, osx_output_quark(), 0, - "Error finding OS X component"); - return false; - } - - OSStatus status = OpenAComponent(comp, &oo->au); - if (status != noErr) { - g_set_error(error_r, osx_output_quark(), status, - "Unable to open OS X component: %s", - GetMacOSStatusCommentString(status)); - return false; - } - - if (!osx_output_set_device(oo, error_r)) { - CloseComponent(oo->au); - return false; - } - - AURenderCallbackStruct callback; - callback.inputProc = osx_render; - callback.inputProcRefCon = oo; - - ComponentResult result = - AudioUnitSetProperty(oo->au, - kAudioUnitProperty_SetRenderCallback, - kAudioUnitScope_Input, 0, - &callback, sizeof(callback)); - if (result != noErr) { - CloseComponent(oo->au); - g_set_error(error_r, osx_output_quark(), result, - "unable to set callback for OS X audio unit"); - return false; - } - - return true; -} - -static void -osx_output_disable(struct audio_output *ao) -{ - struct osx_output *oo = (struct osx_output *)ao; - - CloseComponent(oo->au); -} - -static void -osx_output_cancel(struct audio_output *ao) -{ - struct osx_output *od = (struct osx_output *)ao; - - g_mutex_lock(od->mutex); - fifo_buffer_clear(od->buffer); - g_mutex_unlock(od->mutex); -} - -static void -osx_output_close(struct audio_output *ao) -{ - struct osx_output *od = (struct osx_output *)ao; - - AudioOutputUnitStop(od->au); - AudioUnitUninitialize(od->au); - - fifo_buffer_free(od->buffer); -} - -static bool -osx_output_open(struct audio_output *ao, struct audio_format *audio_format, GError **error) -{ - struct osx_output *od = (struct osx_output *)ao; - - AudioStreamBasicDescription stream_description; - stream_description.mSampleRate = audio_format->sample_rate; - stream_description.mFormatID = kAudioFormatLinearPCM; - stream_description.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger; - - switch (audio_format->format) { - case SAMPLE_FORMAT_S8: - stream_description.mBitsPerChannel = 8; - break; - - case SAMPLE_FORMAT_S16: - stream_description.mBitsPerChannel = 16; - break; - - case SAMPLE_FORMAT_S32: - stream_description.mBitsPerChannel = 32; - break; - - default: - audio_format->format = SAMPLE_FORMAT_S32; - stream_description.mBitsPerChannel = 32; - break; - } - -#if G_BYTE_ORDER == G_BIG_ENDIAN - stream_description.mFormatFlags |= kLinearPCMFormatFlagIsBigEndian; -#endif - - stream_description.mBytesPerPacket = - audio_format_frame_size(audio_format); - stream_description.mFramesPerPacket = 1; - stream_description.mBytesPerFrame = stream_description.mBytesPerPacket; - stream_description.mChannelsPerFrame = audio_format->channels; - - ComponentResult result = - AudioUnitSetProperty(od->au, kAudioUnitProperty_StreamFormat, - kAudioUnitScope_Input, 0, - &stream_description, - sizeof(stream_description)); - if (result != noErr) { - g_set_error(error, osx_output_quark(), result, - "Unable to set format on OS X device"); - return false; - } - - OSStatus status = AudioUnitInitialize(od->au); - if (status != noErr) { - g_set_error(error, osx_output_quark(), status, - "Unable to initialize OS X audio unit: %s", - GetMacOSStatusCommentString(status)); - return false; - } - - /* create a buffer of 1s */ - od->buffer = fifo_buffer_new(audio_format->sample_rate * - audio_format_frame_size(audio_format)); - - status = AudioOutputUnitStart(od->au); - if (status != 0) { - AudioUnitUninitialize(od->au); - g_set_error(error, osx_output_quark(), status, - "unable to start audio output: %s", - GetMacOSStatusCommentString(status)); - return false; - } - - return true; -} - -static size_t -osx_output_play(struct audio_output *ao, const void *chunk, size_t size, - G_GNUC_UNUSED GError **error) -{ - struct osx_output *od = (struct osx_output *)ao; - - g_mutex_lock(od->mutex); - - void *dest; - size_t max_length; - - while (true) { - dest = fifo_buffer_write(od->buffer, &max_length); - if (dest != NULL) - break; - - /* wait for some free space in the buffer */ - g_cond_wait(od->condition, od->mutex); - } - - if (size > max_length) - size = max_length; - - memcpy(dest, chunk, size); - fifo_buffer_append(od->buffer, size); - - g_mutex_unlock(od->mutex); - - return size; -} - -const struct audio_output_plugin osx_output_plugin = { - .name = "osx", - .test_default_device = osx_output_test_default_device, - .init = osx_output_init, - .finish = osx_output_finish, - .enable = osx_output_enable, - .disable = osx_output_disable, - .open = osx_output_open, - .close = osx_output_close, - .play = osx_output_play, - .cancel = osx_output_cancel, -}; 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