+/* -*- c-basic-offset: 4 -*- */
/*
Copyright (C) 2001 CodeFactory AB
Copyright (C) 2001 Thomas Nyberg <thomas@codefactory.se>
- Copyright (C) 2001 Andy Wingo <apwingo@eos.ncsu.edu>
+ Copyright (C) 2001
-2002 Andy Wingo <apwingo@eos.ncsu.edu>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public
static void gst_alsa_set_property(GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
static void gst_alsa_get_property(GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
static GstElementStateReturn gst_alsa_change_state(GstElement *element);
-/*static GstPadNegotiateReturn gst_alsa_negotiate(GstPad *pad, GstCaps **caps, gpointer *user_data); */
+static GstPadConnectReturn gst_alsa_connect(GstPad *pad, GstCaps *caps);
static GstCaps* gst_alsa_caps (GstAlsa *this);
ARG_CHANNELS,
ARG_RATE,
ARG_PERIODCOUNT,
- ARG_PERIODFRAMES
+ ARG_PERIODFRAMES,
+ ARG_DEBUG
};
+#define GST_TYPE_ALSA_FORMAT (gst_alsa_format_get_type())
+static GType
+gst_alsa_format_get_type (void)
+{
+ static GType type = 0;
+ static GEnumValue *values = NULL;
+ gint i, len = SND_PCM_FORMAT_GSM + 3;
+
+ if (values == NULL) {
+ /* the three: for -1, 0, and the terminating NULL */
+ values = g_new0 (GEnumValue, len);
+
+ for (i=0; i<len-1; i++) {
+ values[i].value = i-1; /* UNKNOWN is -1 */
+ values[i].value_name = g_strdup_printf ("%d", i-1);
+ values[i].value_nick = g_strdup (snd_pcm_format_name ((snd_pcm_format_t)i-1));
+ }
+ }
+
+ if (!type) {
+ type = g_enum_register_static ("GstAlsaFormat", values);
+ }
+ return type;
+}
+
GType
gst_alsa_get_type (void)
{
- static GType alsa_type = 0;
-
- if (!alsa_type) {
- static const GTypeInfo alsa_info = {
- sizeof(GstAlsaClass),
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- sizeof(GstAlsa),
- 0,
- NULL,
- };
- alsa_type = g_type_register_static (GST_TYPE_ELEMENT, "GstAlsa", &alsa_info, 0);
- }
- return alsa_type;
+ static GType alsa_type = 0;
+
+ if (!alsa_type) {
+ static const GTypeInfo alsa_info = {
+ sizeof(GstAlsaClass),
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ sizeof(GstAlsa),
+ 0,
+ NULL,
+ };
+ alsa_type = g_type_register_static (GST_TYPE_ELEMENT, "GstAlsa", &alsa_info, 0);
+ }
+ return alsa_type;
}
GType
gst_alsa_sink_get_type (void)
{
- static GType alsa_type = 0;
-
- if (!alsa_type) {
- static const GTypeInfo alsa_info = {
- sizeof(GstAlsaClass),
- NULL,
- NULL,
- (GClassInitFunc)gst_alsa_class_init,
- NULL,
- NULL,
- sizeof(GstAlsa),
- 0,
- (GInstanceInitFunc)gst_alsa_init,
- };
- alsa_type = g_type_register_static (GST_TYPE_ALSA, "GstAlsaSink", &alsa_info, 0);
- }
- return alsa_type;
+ static GType alsa_type = 0;
+
+ if (!alsa_type) {
+ static const GTypeInfo alsa_info = {
+ sizeof(GstAlsaClass),
+ NULL,
+ NULL,
+ (GClassInitFunc)gst_alsa_class_init,
+ NULL,
+ NULL,
+ sizeof(GstAlsa),
+ 0,
+ (GInstanceInitFunc)gst_alsa_init,
+ };
+ alsa_type = g_type_register_static (GST_TYPE_ALSA, "GstAlsaSink", &alsa_info, 0);
+ }
+ return alsa_type;
}
GType
gst_alsa_src_get_type (void)
{
- static GType alsa_type = 0;
-
- if (!alsa_type) {
- static const GTypeInfo alsa_info = {
- sizeof(GstAlsaClass),
- NULL,
- NULL,
- (GClassInitFunc)gst_alsa_class_init,
- NULL,
- NULL,
- sizeof(GstAlsa),
- 0,
- (GInstanceInitFunc)gst_alsa_init,
- };
- alsa_type = g_type_register_static (GST_TYPE_ALSA, "GstAlsaSrc", &alsa_info, 0);
- }
- return alsa_type;
+ static GType alsa_type = 0;
+
+ if (!alsa_type) {
+ static const GTypeInfo alsa_info = {
+ sizeof(GstAlsaClass),
+ NULL,
+ NULL,
+ (GClassInitFunc)gst_alsa_class_init,
+ NULL,
+ NULL,
+ sizeof(GstAlsa),
+ 0,
+ (GInstanceInitFunc)gst_alsa_init,
+ };
+ alsa_type = g_type_register_static (GST_TYPE_ALSA, "GstAlsaSrc", &alsa_info, 0);
+ }
+ return alsa_type;
}
static GstPadTemplate*
if (!template)
template = gst_pad_template_new("src", GST_PAD_SRC, GST_PAD_SOMETIMES,
- gst_caps_new("src", "audio/raw", NULL),
- NULL);
+ gst_caps_new("src", "audio/raw", NULL),
+ NULL);
return template;
}
if (!template)
template = gst_pad_template_new("src%d", GST_PAD_SRC, GST_PAD_REQUEST,
- gst_caps_new("src", "audio/raw",
- gst_props_new("channels", GST_PROPS_INT(1), NULL)),
- NULL);
+ gst_caps_new("src-request", "audio/raw",
+ gst_props_new("channels", GST_PROPS_INT(1), NULL)),
+ NULL);
return template;
}
if (!template)
template = gst_pad_template_new("sink", GST_PAD_SINK, GST_PAD_SOMETIMES,
- gst_caps_new("sink", "audio/raw", NULL),
- NULL);
+ gst_caps_new("sink", "audio/raw", NULL),
+ NULL);
return template;
}
if (!template)
template = gst_pad_template_new("sink%d", GST_PAD_SINK, GST_PAD_REQUEST,
- gst_caps_new("sink-request", "audio/raw",
- gst_props_new("channels", GST_PROPS_INT(1), NULL)),
- NULL);
+ gst_caps_new("sink-request", "audio/raw",
+ gst_props_new("channels", GST_PROPS_INT(1), NULL)),
+ NULL);
return template;
}
object_class->set_property = gst_alsa_set_property;
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DEVICE,
- g_param_spec_string("device","device","alsa device: please see README for details",
+ g_param_spec_string("device","Device","Alsa device, as defined in an asoundrc",
"default",
- G_PARAM_READWRITE));
+ G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FORMAT,
- g_param_spec_int("format","format","format",
- 0, SND_PCM_FORMAT_LAST, SND_PCM_FORMAT_S16,
+ g_param_spec_enum("format","Format","PCM audio format",
+ GST_TYPE_ALSA_FORMAT, -1,
G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_CHANNELS,
- g_param_spec_int("channels","channels","channels",
- 1, 64, 1,
- G_PARAM_READWRITE));
+ g_param_spec_int("channels","Channels","Number of channels",
+ 1, 64, 2,
+ G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_RATE,
- g_param_spec_int("rate","rate","rate",
+ g_param_spec_int("rate","Rate","Sample rate, in Hz",
8000, 192000, 44100,
- G_PARAM_READWRITE));
+ G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_PERIODCOUNT,
- g_param_spec_int("period_count","period count","period count",
+ g_param_spec_int("period-count","Period count","Number of hardware buffers to use",
2, 64, 2,
- G_PARAM_READWRITE));
+ G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_PERIODFRAMES,
- g_param_spec_int("period_frames","period frames","period frames",
- 64, 4096, 256,
- G_PARAM_READWRITE));
+ g_param_spec_int("period-frames","Period frames","Number of frames (samples on each channel) in one hardware period",
+ 64, 8192, 8192,
+ G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DEBUG,
+ g_param_spec_boolean("debug","Debug","Set to TRUE to output PCM state info",
+ FALSE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
element_class->change_state = gst_alsa_change_state;
/* init values */
this->handle = NULL;
- /* i tried to trim this down to only the essentials needed for proper
- * functioning; we'll be setting this values 'in earnest' when caps come */
-
- this->rate = 44100;
- this->channels = 2;
-
- /* i wish i could leave these to defaults, but when caps come and typically
- * the number of channels doubles, you can't have the default count and size
- * that alsa gives you from the pre-caps setup apply to the post-caps setup
- * due to internal hw buffer size restrictions. these values seem to be
- * pretty common, though, although not pushing latency limits */
- this->period_count = 2;
- this->period_frames = 4096;
-
- this->device = g_strdup("default");
-
- /* is this right? */
GST_FLAG_SET(this, GST_ELEMENT_THREAD_SUGGESTED);
if (G_OBJECT_TYPE(this) == GST_TYPE_ALSA_SRC) {
this->process = gst_alsa_sink_process;
this->format = SND_PCM_FORMAT_UNKNOWN; /* we don't know until caps are
* set */
- } else {
- g_print("you cannot instantiate an object of type gstalsa. use alsasink or alsasrc instead.\n");
- G_BREAKPOINT();
- return;
}
GST_ALSA_PAD(this->pads)->channel = -1;
gst_element_add_pad(GST_ELEMENT(this), GST_ALSA_PAD(this->pads)->pad);
- /*gst_pad_set_negotiate_function(GST_ALSA_PAD(this->pads)->pad, gst_alsa_negotiate); */
+ gst_pad_set_connect_function(GST_ALSA_PAD(this->pads)->pad, gst_alsa_connect);
gst_element_set_loop_function(GST_ELEMENT(this), gst_alsa_loop);
}
NULL);
if (name) {
- if (sscanf(name, templ->name_template, &channel) != 1) {
- g_warning("invalid pad name %s (trying to fit with %s)", name,
- templ->name_template);
- return NULL;
- }
+ channel = atoi (name + (strchr (templ->name_template, '%') - templ->name_template));
+
l = this->pads;
while (l) {
if (GST_ALSA_PAD(l)->channel == channel) {
}
}
- newname = g_strdup_printf (templ->name_template, channel);
+ newname = g_strdup (name);
pad = g_new0(GstAlsaPad, 1);
pad->channel = channel;
pad->pad = gst_pad_new_from_template (templ, newname);
gst_element_add_pad (GST_ELEMENT (this), pad->pad);
- /*gst_pad_set_negotiate_function(pad->pad, gst_alsa_negotiate); */
+ gst_pad_set_connect_function(pad->pad, gst_alsa_connect);
if (this->data_interleaved && this->pads) {
gst_element_remove_pad (GST_ELEMENT (this), GST_ALSA_PAD(this->pads)->pad);
this->device = g_strdup(g_value_get_string (value));
break;
case ARG_FORMAT:
- this->format = g_value_get_int (value);
+ this->format = g_value_get_enum (value);
break;
case ARG_CHANNELS:
this->channels = g_value_get_int (value);
this->period_frames = g_value_get_int (value);
this->buffer_frames = this->period_count * this->period_frames;
break;
+ case ARG_DEBUG:
+ this->debug = g_value_get_boolean (value);
+ return;
default:
GST_DEBUG(0, "Unknown arg");
return;
g_value_set_string (value, this->device);
break;
case ARG_FORMAT:
- g_value_set_int (value, this->format);
+ g_value_set_enum (value, this->format);
break;
case ARG_CHANNELS:
g_value_set_int (value, this->channels);
case ARG_PERIODFRAMES:
g_value_set_int (value, this->period_frames);
break;
+ case ARG_DEBUG:
+ g_value_set_boolean (value, this->debug);
+ break;
default:
GST_DEBUG(0, "Unknown arg");
break;
return GST_STATE_SUCCESS;
}
-/* defined but not used
+
static gboolean
gst_alsa_parse_caps (GstAlsa *this, GstCaps *caps)
{
gint format = -1;
const gchar* format_name;
- gst_caps_get_string(caps, "format", &format_name);
+ if (!gst_caps_get_string (caps, "format", &format_name))
+ return FALSE;
if (format_name == NULL) {
return FALSE;
} else if (strcmp(format_name, "int")==0) {
- gst_caps_get_int (caps, "width", &width);
- gst_caps_get_int (caps, "depth", &depth);
-
- gst_caps_get_int (caps, "law", &law);
- gst_caps_get_int (caps, "endianness", &endianness);
- gst_caps_get_boolean (caps, "signed", &sign);
+ if (!gst_caps_get (caps,
+ "width", &width,
+ "depth", &depth,
+ "law", &law,
+ "endianness", &endianness,
+ "signed", &sign,
+ NULL))
+ return FALSE;
if (law == 0) {
if (width == 8) {
format = SND_PCM_FORMAT_U32_BE;
}
}
- } else if (law == 1) { *//* mu law *//*
+ } else if (law == 1) { /* mu law */
if (width == depth && width == 8 && sign == FALSE) {
format = SND_PCM_FORMAT_MU_LAW;
} else {
return FALSE;
}
- } else if (law == 2) { *//* a law, ug. *//*
+ } else if (law == 2) { /* a law, ug. */
if (width == depth && width == 8 && sign == FALSE) {
format = SND_PCM_FORMAT_A_LAW;
}
} else if (strcmp(format_name, "float")==0) {
const gchar *layout;
- gst_caps_get_string(caps, "layout", &layout);
-
+ if (!gst_caps_get_string (caps, "layout", &layout))
+ return FALSE;
+
if (strcmp(layout, "gfloat")==0) {
format = SND_PCM_FORMAT_FLOAT;
} else {
return FALSE;
- *//* if you need float64, chat w/ me on irc.gstreamer.net and i'll tell you what needs to
- * be done. i'm 'wingo'. *//*
+ /* you need doubles? jeez... */
}
} else {
return FALSE;
}
this->format = format;
- gst_caps_get_int(caps, "rate", &this->rate);
- gst_caps_get_int(caps, "channels", &channels);
+ if (!gst_caps_get (caps,
+ "rate", &this->rate,
+ "channels", &channels,
+ NULL))
+ return FALSE;
if (this->data_interleaved)
this->channels = channels;
return TRUE;
}
-*/
+
/* caps are so painful sometimes. */
static GstCaps*
gst_alsa_caps (GstAlsa *this)
/*
* Negotiates the caps, "borrowed" from gstosssink.c
*/
-#if 0
-GstPadNegotiateReturn
-gst_alsa_negotiate(GstPad *pad, GstCaps **caps, gpointer *user_data)
+GstPadConnectReturn
+gst_alsa_connect(GstPad *pad, GstCaps *caps)
{
GstAlsa *this;
gboolean need_mmap;
-
- g_return_val_if_fail (pad != NULL, GST_PAD_NEGOTIATE_FAIL);
- g_return_val_if_fail (GST_IS_PAD (pad), GST_PAD_NEGOTIATE_FAIL);
-
+
+ g_return_val_if_fail (caps != NULL, GST_PAD_CONNECT_REFUSED);
+ g_return_val_if_fail (pad != NULL, GST_PAD_CONNECT_REFUSED);
+
this = GST_ALSA(gst_pad_get_parent(pad));
- /* we decide */
- if (user_data == NULL) {
- *caps = NULL;
- return GST_PAD_NEGOTIATE_TRY;
- }
- /* have we got caps? */
- else if (*caps) {
+ if (GST_CAPS_IS_FIXED (caps)) {
if (this->handle == NULL)
if (!gst_alsa_open_audio(this))
- return GST_PAD_NEGOTIATE_FAIL;
+ return GST_PAD_CONNECT_REFUSED;
- if (gst_alsa_parse_caps(this, *caps)) {
+ if (gst_alsa_parse_caps(this, caps)) {
need_mmap = this->mmap_open;
/* sync the params */
/* FIXME send out another caps if nego fails */
if (!gst_alsa_open_audio(this))
- return GST_PAD_NEGOTIATE_FAIL;
+ return GST_PAD_CONNECT_REFUSED;
if (!gst_alsa_start_audio(this))
- return GST_PAD_NEGOTIATE_FAIL;
+ return GST_PAD_CONNECT_REFUSED;
if (need_mmap && !gst_alsa_get_channel_addresses(this))
- return GST_PAD_NEGOTIATE_FAIL;
+ return GST_PAD_CONNECT_REFUSED;
- return GST_PAD_NEGOTIATE_AGREE;
+ return GST_PAD_CONNECT_OK;
}
- return GST_PAD_NEGOTIATE_FAIL;
+ return GST_PAD_CONNECT_REFUSED;
}
- return GST_PAD_NEGOTIATE_FAIL;
+ return GST_PAD_CONNECT_DELAYED;
}
-#endif
/* shamelessly stolen from pbd's audioengine. thanks, paul! */
static void
xrun_detected = FALSE;
this->avail = snd_pcm_avail_update (this->handle);
-/* g_print ("snd_pcm_avail_update() = %d\n", this->avail); */
+// g_print ("snd_pcm_avail_update() = %d\n", (int)this->avail);
if (this->avail < 0) {
if (this->avail == -EPIPE) {
}
}
+ /* round down to nearest period_frames avail */
+ this->avail -= this->avail % this->period_frames;
+
+// g_print ("snd_pcm_avail_update(), rounded down = %d\n", (int)this->avail);
+
/* pretty sophisticated eh? */
if (xrun_detected)
g_warning ("xrun detected");
* underestimate the amount of data we will need by peeking 'frames' only.
* */
+ /* FIXME: if 0 < peek_bytes < len, play the peek_bytes */
+
if (!this->sample_bytes) {
if (!GST_ALSA_PAD(this->pads)->bs)
GST_ALSA_PAD(this->pads)->bs = gst_bytestream_new(GST_ALSA_PAD(this->pads)->pad);
- if (gst_bytestream_peek_bytes(GST_ALSA_PAD(this->pads)->bs, &peeked, frames) != frames) {
- g_warning("initial pull on pad %s returned NULL", GST_OBJECT_NAME(GST_ALSA_PAD(this->pads)->pad));
- gst_element_set_state(GST_ELEMENT(this), GST_STATE_PAUSED);
+ if (gst_bytestream_peek_bytes (GST_ALSA_PAD (this->pads)->bs, &peeked, frames) != frames) {
+ g_warning("could not make initial pull of %d bytes on pad %s:%s", (int)frames, GST_DEBUG_PAD_NAME(GST_ALSA_PAD(this->pads)->pad));
+ gst_element_set_eos (GST_ELEMENT(this));
return FALSE;
}
g_warning("could not set sw_params: %s", snd_strerror(ret));
return FALSE;
}
-
- snd_pcm_dump(this->handle, this->out);
+
+ if (this->debug)
+ snd_pcm_dump(this->handle, this->out);
this->access_interleaved = !(snd_pcm_hw_params_get_access (hw_param) ==
SND_PCM_ACCESS_MMAP_NONINTERLEAVED);
projects / platform / upstream / gst-plugins-base.git / commitdiff