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-rw-r--r--src/output/osx_plugin.c174
1 files changed, 85 insertions, 89 deletions
diff --git a/src/output/osx_plugin.c b/src/output/osx_plugin.c
index 97ecb8e94..ff6ee870c 100644
--- a/src/output/osx_plugin.c
+++ b/src/output/osx_plugin.c
@@ -24,34 +24,19 @@
#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "osx"
-typedef struct _OsxData {
+struct osx_output {
AudioUnit au;
GMutex *mutex;
GCond *condition;
char *buffer;
- size_t bufferSize;
+ size_t buffer_size;
size_t pos;
size_t len;
int started;
-} OsxData;
-
-static OsxData *newOsxData(void)
-{
- OsxData *ret = g_new(OsxData, 1);
-
- ret->mutex = g_mutex_new();
- ret->condition = g_cond_new();
-
- ret->pos = 0;
- ret->len = 0;
- ret->started = 0;
- ret->buffer = NULL;
- ret->bufferSize = 0;
-
- return ret;
-}
+};
-static bool osx_testDefault(void)
+static bool
+osx_output_test_default_device(void)
{
/*AudioUnit au;
ComponentDescription desc;
@@ -80,38 +65,45 @@ static bool osx_testDefault(void)
}
static void *
-osx_initDriver(G_GNUC_UNUSED const struct audio_format *audio_format,
- G_GNUC_UNUSED const struct config_param *param)
+osx_output_init(G_GNUC_UNUSED const struct audio_format *audio_format,
+ G_GNUC_UNUSED const struct config_param *param)
{
- return newOsxData();
+ struct osx_output *oo = g_new(struct osx_output, 1);
+
+ oo->mutex = g_mutex_new();
+ oo->condition = g_cond_new();
+
+ oo->pos = 0;
+ oo->len = 0;
+ oo->started = 0;
+ oo->buffer = NULL;
+ oo->buffer_size = 0;
+
+ return oo;
}
-static void freeOsxData(OsxData * od)
+static void osx_output_finish(void *data)
{
+ struct osx_output *od = data;
+
g_free(od->buffer);
g_mutex_free(od->mutex);
g_cond_free(od->condition);
g_free(od);
}
-static void osx_finishDriver(void *data)
-{
- OsxData *od = data;
- freeOsxData(od);
-}
-
-static void osx_dropBufferedAudio(void *data)
+static void osx_output_cancel(void *data)
{
- OsxData *od = data;
+ struct osx_output *od = data;
g_mutex_lock(od->mutex);
od->len = 0;
g_mutex_unlock(od->mutex);
}
-static void osx_closeDevice(void *data)
+static void osx_output_close(void *data)
{
- OsxData *od = data;
+ struct osx_output *od = data;
g_mutex_lock(od->mutex);
while (od->len) {
@@ -130,45 +122,47 @@ static void osx_closeDevice(void *data)
static OSStatus
osx_render(void *vdata,
- G_GNUC_UNUSED AudioUnitRenderActionFlags * ioActionFlags,
- G_GNUC_UNUSED const AudioTimeStamp * inTimeStamp,
- G_GNUC_UNUSED UInt32 inBusNumber,
- G_GNUC_UNUSED UInt32 inNumberFrames,
- AudioBufferList * bufferList)
+ 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)
{
- OsxData *od = (OsxData *) vdata;
- AudioBuffer *buffer = &bufferList->mBuffers[0];
- size_t bufferSize = buffer->mDataByteSize;
- size_t bytesToCopy;
- size_t bytes;
- int curpos = 0;
+ struct osx_output *od = (struct osx_output *) vdata;
+ AudioBuffer *buffer = &buffer_list->mBuffers[0];
+ size_t buffer_size = buffer->mDataByteSize;
+ size_t bytes_to_copy;
+ size_t trailer_length;
+ size_t dest_pos = 0;
g_mutex_lock(od->mutex);
- bytesToCopy = MIN(od->len, bufferSize);
- bufferSize = bytesToCopy;
- od->len -= bytesToCopy;
+ bytes_to_copy = MIN(od->len, buffer_size);
+ buffer_size = bytes_to_copy;
+ od->len -= bytes_to_copy;
- bytes = od->bufferSize - od->pos;
- if (bytesToCopy > bytes) {
- memcpy((unsigned char*)buffer->mData + curpos, od->buffer + od->pos, bytes);
+ trailer_length = od->buffer_size - od->pos;
+ if (bytes_to_copy > trailer_length) {
+ memcpy((unsigned char*)buffer->mData + dest_pos,
+ od->buffer + od->pos, trailer_length);
od->pos = 0;
- curpos += bytes;
- bytesToCopy -= bytes;
+ dest_pos += trailer_length;
+ bytes_to_copy -= trailer_length;
}
- memcpy((unsigned char*)buffer->mData + curpos, od->buffer + od->pos, bytesToCopy);
- od->pos += bytesToCopy;
+ memcpy((unsigned char*)buffer->mData + dest_pos,
+ od->buffer + od->pos, bytes_to_copy);
+ od->pos += bytes_to_copy;
- if (od->pos >= od->bufferSize)
+ if (od->pos >= od->buffer_size)
od->pos = 0;
g_mutex_unlock(od->mutex);
g_cond_signal(od->condition);
- buffer->mDataByteSize = bufferSize;
+ buffer->mDataByteSize = buffer_size;
- if (!bufferSize) {
+ if (!buffer_size) {
g_usleep(1000);
}
@@ -176,16 +170,16 @@ osx_render(void *vdata,
}
static bool
-osx_openDevice(void *data, struct audio_format *audioFormat)
+osx_output_open(void *data, struct audio_format *audio_format)
{
- OsxData *od = data;
+ struct osx_output *od = data;
ComponentDescription desc;
Component comp;
AURenderCallbackStruct callback;
- AudioStreamBasicDescription streamDesc;
+ AudioStreamBasicDescription stream_description;
- if (audioFormat->bits > 16)
- audioFormat->bits = 16;
+ if (audio_format->bits > 16)
+ audio_format->bits = 16;
desc.componentType = kAudioUnitType_Output;
desc.componentSubType = kAudioUnitSubType_DefaultOutput;
@@ -222,22 +216,24 @@ osx_openDevice(void *data, struct audio_format *audioFormat)
return false;
}
- streamDesc.mSampleRate = audioFormat->sample_rate;
- streamDesc.mFormatID = kAudioFormatLinearPCM;
- streamDesc.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger;
+ stream_description.mSampleRate = audio_format->sample_rate;
+ stream_description.mFormatID = kAudioFormatLinearPCM;
+ stream_description.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger;
#if G_BYTE_ORDER == G_BIG_ENDIAN
- streamDesc.mFormatFlags |= kLinearPCMFormatFlagIsBigEndian;
+ stream_description.mFormatFlags |= kLinearPCMFormatFlagIsBigEndian;
#endif
- streamDesc.mBytesPerPacket = audio_format_frame_size(audioFormat);
- streamDesc.mFramesPerPacket = 1;
- streamDesc.mBytesPerFrame = streamDesc.mBytesPerPacket;
- streamDesc.mChannelsPerFrame = audioFormat->channels;
- streamDesc.mBitsPerChannel = audioFormat->bits;
+ 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;
+ stream_description.mBitsPerChannel = audio_format->bits;
if (AudioUnitSetProperty(od->au, kAudioUnitProperty_StreamFormat,
kAudioUnitScope_Input, 0,
- &streamDesc, sizeof(streamDesc)) != 0) {
+ &stream_description,
+ sizeof(stream_description)) != 0) {
AudioUnitUninitialize(od->au);
CloseComponent(od->au);
g_warning("Unable to set format on OS X device\n");
@@ -245,9 +241,9 @@ osx_openDevice(void *data, struct audio_format *audioFormat)
}
/* create a buffer of 1s */
- od->bufferSize = (audioFormat->sample_rate) *
- audio_format_frame_size(audioFormat);
- od->buffer = g_realloc(od->buffer, od->bufferSize);
+ od->buffer_size = (audio_format->sample_rate) *
+ audio_format_frame_size(audio_format);
+ od->buffer = g_realloc(od->buffer, od->buffer_size);
od->pos = 0;
od->len = 0;
@@ -256,9 +252,9 @@ osx_openDevice(void *data, struct audio_format *audioFormat)
}
static size_t
-osx_play(void *data, const void *chunk, size_t size)
+osx_output_play(void *data, const void *chunk, size_t size)
{
- OsxData *od = data;
+ struct osx_output *od = data;
size_t start, nbytes;
if (!od->started) {
@@ -273,17 +269,17 @@ osx_play(void *data, const void *chunk, size_t size)
g_mutex_lock(od->mutex);
- while (od->len >= od->bufferSize)
+ while (od->len >= od->buffer_size)
/* wait for some free space in the buffer */
g_cond_wait(od->condition, od->mutex);
start = od->pos + od->len;
- if (start >= od->bufferSize)
- start -= od->bufferSize;
+ if (start >= od->buffer_size)
+ start -= od->buffer_size;
nbytes = start < od->pos
? od->pos - start
- : od->bufferSize - start;
+ : od->buffer_size - start;
assert(nbytes > 0);
@@ -300,11 +296,11 @@ osx_play(void *data, const void *chunk, size_t size)
const struct audio_output_plugin osxPlugin = {
.name = "osx",
- .test_default_device = osx_testDefault,
- .init = osx_initDriver,
- .finish = osx_finishDriver,
- .open = osx_openDevice,
- .play = osx_play,
- .cancel = osx_dropBufferedAudio,
- .close = osx_closeDevice,
+ .test_default_device = osx_output_test_default_device,
+ .init = osx_output_init,
+ .finish = osx_output_finish,
+ .open = osx_output_open,
+ .close = osx_output_close,
+ .play = osx_output_play,
+ .cancel = osx_output_cancel,
};