X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=osx_write.c;h=f27a49b0f1183947763c6bae1ac31b2af1b92e3a;hp=bcff09f781bc3c1e703a4cc4bcce91f5c8ff5628;hb=75d545612d8fb51b7e6b2f8a7349b54502004cfa;hpb=e9cd585d196728e24eb6e2086405b73842bc3eb5

diff --git a/osx_write.c b/osx_write.c
index bcff09f7..f27a49b0 100644
--- a/osx_write.c
+++ b/osx_write.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006-2010 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2006-2011 Andre Noll <maan@systemlinux.org>
  *
  * Licensed under the GPL v2. For licencing details see COPYING.
  */
@@ -57,7 +57,9 @@ struct private_osx_write_data {
 	/** the post_select writes audio data here */
 	struct osx_buffer *to;
 	/** sample rate of the current audio stream */
-	unsigned samplerate;
+	unsigned sample_rate;
+	/** Sample format of the current audio stream */
+	unsigned sample_format;
 	/** number of channels of the current audio stream */
 	unsigned channels;
 };
@@ -94,18 +96,41 @@ static void init_buffers(struct writer_node *wn)
 	*ptrptr = powd->from = powd->to;
 }
 
-static void fill_buffer(struct osx_buffer *b, short *source, long size)
+static void fill_buffer(struct private_osx_write_data *powd, char *data, long bytes)
 {
+	struct osx_buffer *b = powd->to;
 	float *dest;
+	long samples;
+	enum sample_format sf = powd->sample_format;
 
-	assert(b->remaining == 0 || size > 0);
-	if (b->size != size) {
-		b->buffer = para_realloc(b->buffer, size * sizeof(float));
-		b->size = size;
+	samples = (sf == SF_S8 || sf == SF_U8)? bytes : bytes / 2;
+	assert(b->remaining == 0 || samples > 0);
+	if (b->size != samples) {
+		b->buffer = para_realloc(b->buffer, samples * sizeof(float));
+		b->size = samples;
 	}
 	dest = b->buffer;
-	while (size--)
-		*dest++ = (*source++) / 32768.0;
+	switch (powd->sample_format) {
+	case SF_U8: {
+		uint8_t *src = (uint8_t *)data;
+		while (samples--) {
+			*dest++ = (*src++) / 256.0;
+		}
+		break;
+	}
+	case SF_S8: {
+		int8_t *src = (int8_t *)data;
+		while (samples--) {
+			*dest++ = ((*src++) + 128) / 256.0;
+		}
+		break;
+	}
+	default: {
+		short *src = (short *)data;
+		while (samples--)
+			*dest++ = (*src++) / 32768.0;
+	}
+	}
 	b->ptr = b->buffer;
 	b->remaining = b->size;
 }
@@ -162,19 +187,19 @@ static OSStatus osx_callback(void * inClientData,
 #define ENDIAN_FLAGS 0
 #endif
 
-static int osx_write_open(struct writer_node *wn)
+static int core_audio_init(struct writer_node *wn)
 {
-	struct private_osx_write_data *powd = para_calloc(
-		sizeof(struct private_osx_write_data));
+	struct private_osx_write_data *powd = para_calloc(sizeof(*powd));
 	ComponentDescription desc;
 	Component comp;
 	AURenderCallbackStruct inputCallback = {osx_callback, powd};
 	AudioStreamBasicDescription format;
 	int ret;
 	struct btr_node *btrn = wn->btrn;
-	struct osx_write_args_info *conf = wn->conf;
+	int32_t val;
 
 	wn->private_data = powd;
+	init_buffers(wn);
 	/* where did that default audio output go? */
 	desc.componentType = kAudioUnitType_Output;
 	desc.componentSubType = kAudioUnitSubType_DefaultOutput;
@@ -193,18 +218,12 @@ static int osx_write_open(struct writer_node *wn)
 	if (AudioUnitInitialize(powd->audio_unit))
 		goto e1;
 	powd->play = 0;
-	powd->samplerate = conf->samplerate_arg;
-	powd->channels = conf->channels_arg;
-	if (!conf->samplerate_given) {
-		int32_t rate;
-		if (get_btr_samplerate(btrn, &rate) >= 0)
-			powd->samplerate = rate;
-	}
-	if (!conf->channels_given) {
-		int32_t ch;
-		if (get_btr_channels(btrn, &ch) >= 0)
-			powd->channels = ch;
-	}
+	get_btr_sample_rate(btrn, &val);
+	powd->sample_rate = val;
+	get_btr_channels(btrn, &val);
+	powd->channels = val;
+	get_btr_sample_format(btrn, &val);
+	powd->sample_format = val;
 	/*
 	 * Choose PCM format. We tell the Output Unit what format we're going
 	 * to supply data to it. This is necessary if you're providing data
@@ -212,31 +231,36 @@ static int osx_write_open(struct writer_node *wn)
 	 * any format conversions necessary from your format to the device's
 	 * format.
 	 */
-	format.mSampleRate = powd->samplerate;
-	/* The specific encoding type of audio stream */
 	format.mFormatID = kAudioFormatLinearPCM;
+	format.mFramesPerPacket = 1;
+	format.mSampleRate = powd->sample_rate;
 	/* flags specific to each format */
 	format.mFormatFlags = kLinearPCMFormatFlagIsFloat
 		| kLinearPCMFormatFlagIsPacked
 		| ENDIAN_FLAGS;
+	switch (powd->sample_format) {
+	case SF_S8:
+	case SF_U8:
+		wn->min_iqs = powd->channels;
+		break;
+	default:
+		wn->min_iqs = powd->channels * 2;
+	}
+	format.mBitsPerChannel = 8 * sizeof(float);
+	format.mBytesPerPacket = powd->channels * sizeof(float);
+	format.mBytesPerFrame = format.mBytesPerPacket;
 	format.mChannelsPerFrame = powd->channels;
-	format.mFramesPerPacket = 1;
-	format.mBytesPerPacket = format.mChannelsPerFrame * sizeof(float);
-	format.mBytesPerFrame = format.mFramesPerPacket * format.mBytesPerPacket;
-	/* one of the most constant constants of the whole computer history */
-	format.mBitsPerChannel = sizeof(float) * 8;
+
 	ret = -E_STREAM_FORMAT;
 	if (AudioUnitSetProperty(powd->audio_unit, kAudioUnitProperty_StreamFormat,
 			kAudioUnitScope_Input, 0, &format,
 			sizeof(AudioStreamBasicDescription)))
 		goto e2;
-	init_buffers(wn);
 	ret = -E_ADD_CALLBACK;
 	if (AudioUnitSetProperty(powd->audio_unit, kAudioUnitProperty_SetRenderCallback,
 			kAudioUnitScope_Input, 0, &inputCallback,
 			sizeof(inputCallback)) < 0)
 		goto e3;
-	wn->min_iqs = powd->channels * 2;
 	return 1;
 e3:
 	destroy_buffers(powd);
@@ -245,22 +269,18 @@ e2:
 e1:
 	CloseComponent(powd->audio_unit);
 e0:
+	free(powd);
+	wn->private_data = NULL;
 	return ret;
 }
 
-__malloc static void *osx_write_parse_config(const char *options)
+__malloc static void *osx_write_parse_config_or_die(const char *options)
 {
-	struct osx_write_args_info *conf
-		= para_calloc(sizeof(struct osx_write_args_info));
-	PARA_INFO_LOG("options: %s\n", options);
-	int ret = osx_cmdline_parser_string(options, conf, "osx_write");
-	if (ret)
-		goto err_out;
-	return conf;
-err_out:
-	free(conf);
-	return NULL;
+	struct osx_write_args_info *conf = para_calloc(sizeof(*conf));
 
+	/* exits on errors */
+	osx_cmdline_parser_string(options, conf, "osx_write");
+	return conf;
 }
 
 static void osx_free_config(void *conf)
@@ -272,6 +292,8 @@ static void osx_write_close(struct writer_node *wn)
 {
 	struct private_osx_write_data *powd = wn->private_data;
 
+	if (!powd)
+		return;
 	PARA_INFO_LOG("closing writer node %p\n", wn);
 	AudioOutputUnitStop(powd->audio_unit);
 	AudioUnitUninitialize(powd->audio_unit);
@@ -289,14 +311,20 @@ static void osx_write_post_select(__a_unused struct sched *s, struct task *t)
 	size_t bytes;
 	int ret = 0;
 
-	while (powd->to->remaining <= 0) {
+	while (!powd || powd->to->remaining <= 0) {
 		ret = btr_node_status(wn->btrn, wn->min_iqs, BTR_NT_LEAF);
 		if (ret <= 0)
 			break;
+		if (!powd) {
+			ret = core_audio_init(wn);
+			if (ret < 0)
+				break;
+			powd = wn->private_data;
+		}
 		btr_merge(btrn, 8192);
 		bytes = btr_next_buffer(btrn, &data);
 		//PARA_CRIT_LOG("have: %zu\n", bytes);
-		fill_buffer(powd->to, (short *)data, bytes / sizeof(short));
+		fill_buffer(powd, data, bytes);
 		btr_consume(btrn, bytes);
 		if (!powd->play) {
 			ret = -E_UNIT_START;
@@ -306,9 +334,10 @@ static void osx_write_post_select(__a_unused struct sched *s, struct task *t)
 		}
 		powd->to = powd->to->next;
 	}
-	if (ret < 0)
+	if (ret < 0 && (!powd || powd->from->remaining <= 0)) {
 		btr_remove_node(btrn);
-	t->error = ret;
+		t->error = ret;
+	}
 }
 
 static void osx_write_pre_select(struct sched *s, struct task *t)
@@ -316,17 +345,19 @@ static void osx_write_pre_select(struct sched *s, struct task *t)
 	struct writer_node *wn = container_of(t, struct writer_node, task);
 	struct private_osx_write_data *powd = wn->private_data;
 	struct timeval tmp = {.tv_sec = 1, .tv_usec = 0}, delay = tmp;
-	unsigned long divisor;
-	size_t numbytes = powd->to->remaining * sizeof(short);
+	unsigned long factor;
+	size_t numbytes;
 	int ret = btr_node_status(wn->btrn, wn->min_iqs, BTR_NT_LEAF);
 
-	if (ret < 0)
-		sched_min_delay(s);
-	if (ret <= 0 || numbytes < wn->min_iqs)
+	if (ret == 0)
 		return;
-	divisor = powd->samplerate * wn->min_iqs / numbytes;
-	if (divisor)
-		tv_divide(divisor, &tmp, &delay);
+	if (ret < 0 || !powd)
+		return sched_min_delay(s);
+	assert(powd->sample_rate > 0);
+	assert(wn->min_iqs > 0);
+	numbytes = powd->to->remaining * sizeof(short);
+	factor = numbytes / powd->sample_rate / wn->min_iqs;
+	tv_scale(factor, &tmp, &delay);
 	sched_request_timeout(&delay, s);
 }
 
@@ -336,11 +367,10 @@ void osx_write_init(struct writer *w)
 	struct osx_write_args_info dummy;
 
 	osx_cmdline_parser_init(&dummy);
-	w->open = osx_write_open;
 	w->close = osx_write_close;
 	w->pre_select = osx_write_pre_select;
 	w->post_select = osx_write_post_select;
-	w->parse_config = osx_write_parse_config;
+	w->parse_config_or_die = osx_write_parse_config_or_die;
 	w->free_config = osx_free_config;
 	w->shutdown = NULL; /* nothing to do */
 	w->help = (struct ggo_help) {