diff options
Diffstat (limited to 'sys/oss/gstosssink.c')
| -rw-r--r-- | sys/oss/gstosssink.c | 626 |
1 files changed, 626 insertions, 0 deletions
diff --git a/sys/oss/gstosssink.c b/sys/oss/gstosssink.c new file mode 100644 index 00000000..407efd1a --- /dev/null +++ b/sys/oss/gstosssink.c @@ -0,0 +1,626 @@ +/* GStreamer + * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu> + * 2000 Wim Taymans <wim.taymans@chello.be> + * + * gstosssink.c: + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + + +#include <sys/types.h> +#include <sys/stat.h> +#include <sys/ioctl.h> +#include <fcntl.h> +#include <sys/soundcard.h> +#include <unistd.h> +#include <errno.h> + +#include <gstosssink.h> + +static GstElementDetails gst_osssink_details = { + "Audio Sink (OSS)", + "Sink/Audio", + "Output to a sound card via OSS", + VERSION, + "Erik Walthinsen <omega@cse.ogi.edu>, " + "Wim Taymans <wim.taymans@chello.be>", + "(C) 1999", +}; + +static void gst_osssink_class_init (GstOssSinkClass *klass); +static void gst_osssink_init (GstOssSink *osssink); +static void gst_osssink_finalize (GObject *object); + +static gboolean gst_osssink_open_audio (GstOssSink *sink); +static void gst_osssink_close_audio (GstOssSink *sink); +static void gst_osssink_sync_parms (GstOssSink *osssink); +static GstElementStateReturn gst_osssink_change_state (GstElement *element); +static GstPadNegotiateReturn gst_osssink_negotiate (GstPad *pad, GstCaps **caps, gpointer *user_data); + +static void gst_osssink_set_property (GObject *object, guint prop_id, const GValue *value, + GParamSpec *pspec); +static void gst_osssink_get_property (GObject *object, guint prop_id, GValue *value, + GParamSpec *pspec); + +static void gst_osssink_chain (GstPad *pad,GstBuffer *buf); + +/* OssSink signals and args */ +enum { + SIGNAL_HANDOFF, + LAST_SIGNAL +}; + +enum { + ARG_0, + ARG_DEVICE, + ARG_MUTE, + ARG_FORMAT, + ARG_CHANNELS, + ARG_FREQUENCY, + ARG_FRAGMENT, + ARG_BUFFER_SIZE + /* FILL ME */ +}; + +GST_PADTEMPLATE_FACTORY (osssink_sink_factory, + "sink", + GST_PAD_SINK, + GST_PAD_ALWAYS, + GST_CAPS_NEW ( + "osssink_sink", + "audio/raw", + "format", GST_PROPS_STRING ("int"), // hack + "law", GST_PROPS_INT (0), + "endianness", GST_PROPS_INT (G_BYTE_ORDER), + "signed", GST_PROPS_LIST ( + GST_PROPS_BOOLEAN (FALSE), + GST_PROPS_BOOLEAN (TRUE) + ), + "width", GST_PROPS_LIST ( + GST_PROPS_INT (8), + GST_PROPS_INT (16) + ), + "depth", GST_PROPS_LIST ( + GST_PROPS_INT (8), + GST_PROPS_INT (16) + ), + "rate", GST_PROPS_INT_RANGE (8000, 48000), + "channels", GST_PROPS_INT_RANGE (1, 2) + ) +); + +#define GST_TYPE_OSSSINK_CHANNELS (gst_osssink_channels_get_type()) +static GType +gst_osssink_channels_get_type(void) { + static GType osssink_channels_type = 0; + static GEnumValue osssink_channels[] = { + {0, "0", "Silence"}, + {1, "1", "Mono"}, + {2, "2", "Stereo"}, + {0, NULL, NULL}, + }; + if (!osssink_channels_type) { + osssink_channels_type = g_enum_register_static("GstAudiosinkChannels", osssink_channels); + } + return osssink_channels_type; +} + + +static GstElementClass *parent_class = NULL; +static guint gst_osssink_signals[LAST_SIGNAL] = { 0 }; + +GType +gst_osssink_get_type (void) +{ + static GType osssink_type = 0; + + if (!osssink_type) { + static const GTypeInfo osssink_info = { + sizeof(GstOssSinkClass), + NULL, + NULL, + (GClassInitFunc)gst_osssink_class_init, + NULL, + NULL, + sizeof(GstOssSink), + 0, + (GInstanceInitFunc)gst_osssink_init, + }; + osssink_type = g_type_register_static (GST_TYPE_ELEMENT, "GstOssSink", &osssink_info, 0); + } + + return osssink_type; +} + +static GstBufferPool* +gst_osssink_get_bufferpool (GstPad *pad) +{ + GstOssSink *oss; + + oss = GST_OSSSINK (gst_pad_get_parent(pad)); + + return oss->sinkpool; +} + +static void +gst_osssink_finalize (GObject *object) +{ + GstOssSink *osssink = (GstOssSink *) object; + + g_free (osssink->device); + + G_OBJECT_CLASS (parent_class)->finalize (object); +} + +static void +gst_osssink_class_init (GstOssSinkClass *klass) +{ + GObjectClass *gobject_class; + GstElementClass *gstelement_class; + + gobject_class = (GObjectClass*)klass; + gstelement_class = (GstElementClass*)klass; + + parent_class = g_type_class_ref(GST_TYPE_ELEMENT); + + g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DEVICE, + g_param_spec_string("device","device","device", + "/dev/dsp",G_PARAM_READWRITE)); // CHECKME! + g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_MUTE, + g_param_spec_boolean("mute","mute","mute", + TRUE,G_PARAM_READWRITE)); + + // it would be nice to show format in symbolic form, oh well + g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FORMAT, + g_param_spec_int ("format","format","format", + 0, G_MAXINT, AFMT_S16_LE, G_PARAM_READWRITE)); + + g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_CHANNELS, + g_param_spec_enum("channels","channels","channels", + GST_TYPE_OSSSINK_CHANNELS,2,G_PARAM_READWRITE)); + g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FREQUENCY, + g_param_spec_int("frequency","frequency","frequency", + 0,G_MAXINT,44100,G_PARAM_READWRITE)); + g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FRAGMENT, + g_param_spec_int("fragment","fragment","fragment", + 0,G_MAXINT,6,G_PARAM_READWRITE)); + g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_BUFFER_SIZE, + g_param_spec_int("buffer_size","buffer_size","buffer_size", + 0,G_MAXINT,4096,G_PARAM_READWRITE)); + + gst_osssink_signals[SIGNAL_HANDOFF] = + g_signal_new("handoff",G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST, + G_STRUCT_OFFSET(GstOssSinkClass,handoff), NULL, NULL, + g_cclosure_marshal_VOID__VOID,G_TYPE_NONE,0); + + gobject_class->set_property = gst_osssink_set_property; + gobject_class->get_property = gst_osssink_get_property; + gobject_class->finalize = gst_osssink_finalize; + + gstelement_class->change_state = gst_osssink_change_state; +} + +static void +gst_osssink_init (GstOssSink *osssink) +{ + osssink->sinkpad = gst_pad_new_from_template ( + GST_PADTEMPLATE_GET (osssink_sink_factory), "sink"); + gst_element_add_pad (GST_ELEMENT (osssink), osssink->sinkpad); + gst_pad_set_negotiate_function (osssink->sinkpad, gst_osssink_negotiate); + gst_pad_set_bufferpool_function (osssink->sinkpad, gst_osssink_get_bufferpool); + + gst_pad_set_chain_function (osssink->sinkpad, gst_osssink_chain); + + osssink->device = g_strdup ("/dev/dsp"); + osssink->fd = -1; + osssink->clock = gst_clock_get_system(); + osssink->channels = 1; + osssink->frequency = 11025; + osssink->fragment = 6; +/* AFMT_*_BE not available on all OSS includes (e.g. FBSD) */ +#ifdef WORDS_BIGENDIAN + osssink->format = AFMT_S16_BE; +#else + osssink->format = AFMT_S16_LE; +#endif /* WORDS_BIGENDIAN */ + gst_clock_register (osssink->clock, GST_OBJECT (osssink)); + osssink->bufsize = 4096; + /* 6 buffers per chunk by default */ + osssink->sinkpool = gst_buffer_pool_get_default (osssink->bufsize, 6); + + GST_FLAG_SET (osssink, GST_ELEMENT_THREAD_SUGGESTED); +} + +static gboolean +gst_osssink_parse_caps (GstOssSink *osssink, GstCaps *caps) +{ + gint law, endianness, width, depth; + gboolean sign; + gint format = -1; + + // deal with the case where there are no props... + if (gst_caps_get_props(caps) == NULL) return FALSE; + + width = gst_caps_get_int (caps, "width"); + depth = gst_caps_get_int (caps, "depth"); + + if (width != depth) return FALSE; + + law = gst_caps_get_int (caps, "law"); + endianness = gst_caps_get_int (caps, "endianness"); + sign = gst_caps_get_boolean (caps, "signed"); + + if (law == 0) { + if (width == 16) { + if (sign == TRUE) { + if (endianness == G_LITTLE_ENDIAN) + format = AFMT_S16_LE; + else if (endianness == G_BIG_ENDIAN) + format = AFMT_S16_BE; + } + else { + if (endianness == G_LITTLE_ENDIAN) + format = AFMT_U16_LE; + else if (endianness == G_BIG_ENDIAN) + format = AFMT_U16_BE; + } + } + else if (width == 8) { + if (sign == TRUE) { + format = AFMT_S8; + } + else { + format = AFMT_U8; + } + } + } + + if (format == -1) + return FALSE; + + osssink->format = format; + osssink->channels = gst_caps_get_int (caps, "channels"); + osssink->frequency = gst_caps_get_int (caps, "rate"); + + return TRUE; +} + +static GstPadNegotiateReturn +gst_osssink_negotiate (GstPad *pad, GstCaps **caps, gpointer *user_data) +{ + GstOssSink *osssink; + + g_return_val_if_fail (pad != NULL, GST_PAD_NEGOTIATE_FAIL); + g_return_val_if_fail (GST_IS_PAD (pad), GST_PAD_NEGOTIATE_FAIL); + + osssink = GST_OSSSINK (gst_pad_get_parent (pad)); + + GST_INFO (GST_CAT_NEGOTIATION, "osssink: negotiate"); + // we decide + if (user_data == NULL) { + *caps = NULL; + return GST_PAD_NEGOTIATE_TRY; + } + // have we got caps? + else if (*caps) { + + if (gst_osssink_parse_caps (osssink, *caps)) { + gst_osssink_sync_parms (osssink); + + return GST_PAD_NEGOTIATE_AGREE; + } + + // FIXME check if the sound card was really set to these caps, + // else send out another caps.. + + return GST_PAD_NEGOTIATE_FAIL; + } + + return GST_PAD_NEGOTIATE_FAIL; +} + +static void +gst_osssink_sync_parms (GstOssSink *osssink) +{ + audio_buf_info ospace; + int frag; + + g_return_if_fail (osssink != NULL); + g_return_if_fail (GST_IS_OSSSINK (osssink)); + + if (osssink->fd == -1) return; + + if (osssink->fragment >> 16) + frag = osssink->fragment; + else + frag = 0x7FFF0000 | osssink->fragment; + + ioctl (osssink->fd, SNDCTL_DSP_SETFRAGMENT, &frag); + + ioctl (osssink->fd, SNDCTL_DSP_RESET, 0); + + ioctl (osssink->fd, SNDCTL_DSP_SETFMT, &osssink->format); + ioctl (osssink->fd, SNDCTL_DSP_CHANNELS, &osssink->channels); + ioctl (osssink->fd, SNDCTL_DSP_SPEED, &osssink->frequency); + + ioctl (osssink->fd, SNDCTL_DSP_GETBLKSIZE, &frag); + ioctl (osssink->fd, SNDCTL_DSP_GETOSPACE, &ospace); + + /* + g_warning ("osssink: setting sound card to %dHz %d bit %s (%d bytes buffer, %d fragment)\n", + osssink->frequency, osssink->format, + (osssink->channels == 2) ? "stereo" : "mono", ospace.bytes, frag); + */ + GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: setting sound card to %dHz %d bit %s (%d bytes buffer, %d fragment)", + osssink->frequency, osssink->format, + (osssink->channels == 2) ? "stereo" : "mono", ospace.bytes, frag); + +} + +static void +gst_osssink_chain (GstPad *pad, GstBuffer *buf) +{ + GstOssSink *osssink; + gboolean in_flush; + audio_buf_info ospace; + + g_return_if_fail (pad != NULL); + g_return_if_fail (GST_IS_PAD (pad)); + g_return_if_fail (buf != NULL); + + + /* this has to be an audio buffer */ + osssink = GST_OSSSINK (gst_pad_get_parent (pad)); +// g_return_if_fail(GST_FLAG_IS_SET(osssink,GST_STATE_RUNNING)); + + if (GST_IS_EVENT (buf)) { + g_print ("eos on osssink\n"); + gst_element_set_state (osssink, GST_STATE_PAUSED); + gst_event_free (GST_EVENT (buf)); + } + + if ((in_flush = GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLUSH))) { + GST_DEBUG (GST_CAT_PLUGIN_INFO,"osssink: flush\n"); + ioctl (osssink->fd, SNDCTL_DSP_RESET, 0); + } + + g_signal_emit (G_OBJECT (osssink), gst_osssink_signals[SIGNAL_HANDOFF], 0, + osssink); + + if (GST_BUFFER_DATA (buf) != NULL) { +#ifndef GST_DISABLE_TRACE + gst_trace_add_entry(NULL, 0, buf, "osssink: writing to soundcard"); +#endif // GST_DISABLE_TRACE + //g_print("osssink: writing to soundcard\n"); + if (osssink->fd >= 0) { + if (!osssink->mute) { + gst_clock_wait (osssink->clock, GST_BUFFER_TIMESTAMP (buf), GST_OBJECT (osssink)); + ioctl (osssink->fd, SNDCTL_DSP_GETOSPACE, &ospace); + GST_DEBUG (GST_CAT_PLUGIN_INFO,"osssink: (%d bytes buffer) %d %p %d\n", ospace.bytes, + osssink->fd, GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf)); + write (osssink->fd, GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf)); + //write(STDOUT_FILENO,GST_BUFFER_DATA(buf),GST_BUFFER_SIZE(buf)); + } + } + } + gst_buffer_unref (buf); +} + +static void +gst_osssink_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) +{ + GstOssSink *osssink; + + /* it's not null if we got it, but it might not be ours */ + g_return_if_fail (GST_IS_OSSSINK (object)); + + osssink = GST_OSSSINK (object); + + switch (prop_id) { + case ARG_DEVICE: + osssink->device = g_strdup (g_value_get_string (value)); + break; + case ARG_MUTE: + osssink->mute = g_value_get_boolean (value); + break; + case ARG_FORMAT: + osssink->format = g_value_get_int (value); + gst_osssink_sync_parms (osssink); + break; + case ARG_CHANNELS: + osssink->channels = g_value_get_enum (value); + gst_osssink_sync_parms (osssink); + break; + case ARG_FREQUENCY: + osssink->frequency = g_value_get_int (value); + gst_osssink_sync_parms (osssink); + break; + case ARG_FRAGMENT: + osssink->fragment = g_value_get_int (value); + gst_osssink_sync_parms (osssink); + break; + case ARG_BUFFER_SIZE: + osssink->bufsize = g_value_get_int (value); + osssink->sinkpool = gst_buffer_pool_get_default (osssink->bufsize, 6); + break; + default: + break; + } +} + +static void +gst_osssink_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) +{ + GstOssSink *osssink; + + /* it's not null if we got it, but it might not be ours */ + g_return_if_fail (GST_IS_OSSSINK (object)); + + osssink = GST_OSSSINK (object); + + switch (prop_id) { + case ARG_DEVICE: + g_value_set_string (value, osssink->device); + break; + case ARG_MUTE: + g_value_set_boolean (value, osssink->mute); + break; + case ARG_FORMAT: + g_value_set_int (value, osssink->format); + break; + case ARG_CHANNELS: + g_value_set_enum (value, osssink->channels); + break; + case ARG_FREQUENCY: + g_value_set_int (value, osssink->frequency); + break; + case ARG_FRAGMENT: + g_value_set_int (value, osssink->fragment); + break; + case ARG_BUFFER_SIZE: + g_value_set_int (value, osssink->bufsize); + break; + default: + break; + } +} + +static gboolean +gst_osssink_open_audio (GstOssSink *sink) +{ + gint caps; + g_return_val_if_fail (sink->fd == -1, FALSE); + + GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: attempting to open sound device"); + + /* first try to open the sound card */ + sink->fd = open(sink->device, O_WRONLY | O_NONBLOCK); + if (errno == EBUSY) { + g_warning ("osssink: unable to open the sound device (in use ?)\n"); + return FALSE; + } + + /* re-open the sound device in blocking mode */ + close(sink->fd); + sink->fd = open(sink->device, O_WRONLY); + + /* if we have it, set the default parameters and go have fun */ + if (sink->fd >= 0) { + /* set card state */ + ioctl(sink->fd, SNDCTL_DSP_GETCAPS, &caps); + + GST_INFO(GST_CAT_PLUGIN_INFO, "osssink: Capabilities %08x", caps); + + if (caps & DSP_CAP_DUPLEX) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: Full duplex"); + if (caps & DSP_CAP_REALTIME) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: Realtime"); + if (caps & DSP_CAP_BATCH) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: Batch"); + if (caps & DSP_CAP_COPROC) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: Has coprocessor"); + if (caps & DSP_CAP_TRIGGER) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: Trigger"); + if (caps & DSP_CAP_MMAP) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: Direct access"); + +#ifdef DSP_CAP_MULTI + if (caps & DSP_CAP_MULTI) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: Multiple open"); +#endif /* DSP_CAP_MULTI */ + +#ifdef DSP_CAP_BIND + if (caps & DSP_CAP_BIND) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: Channel binding"); +#endif /* DSP_CAP_BIND */ + + ioctl(sink->fd, SNDCTL_DSP_GETFMTS, &caps); + + GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: Formats %08x", caps); + if (caps & AFMT_MU_LAW) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: MU_LAW"); + if (caps & AFMT_A_LAW) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: A_LAW"); + if (caps & AFMT_IMA_ADPCM) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: IMA_ADPCM"); + if (caps & AFMT_U8) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: U8"); + if (caps & AFMT_S16_LE) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: S16_LE"); + if (caps & AFMT_S16_BE) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: S16_BE"); + if (caps & AFMT_S8) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: S8"); + if (caps & AFMT_U16_LE) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: U16_LE"); + if (caps & AFMT_U16_BE) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: U16_BE"); + if (caps & AFMT_MPEG) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: MPEG"); +#ifdef AFMT_AC3 + if (caps & AFMT_AC3) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: AC3"); +#endif + + GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: opened audio (%s) with fd=%d", sink->device, sink->fd); + GST_FLAG_SET (sink, GST_OSSSINK_OPEN); + + gst_osssink_sync_parms (sink); + return TRUE; + } + + return FALSE; +} + +static void +gst_osssink_close_audio (GstOssSink *sink) +{ + if (sink->fd < 0) return; + + close(sink->fd); + sink->fd = -1; + + GST_FLAG_UNSET (sink, GST_OSSSINK_OPEN); + + GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: closed sound device"); +} + +static GstElementStateReturn +gst_osssink_change_state (GstElement *element) +{ + GstOssSink *osssink; + + g_return_val_if_fail (GST_IS_OSSSINK (element), FALSE); + + osssink = GST_OSSSINK (element); + + /* if going down into NULL state, close the file if it's open */ + if (GST_STATE_PENDING (element) == GST_STATE_NULL) { + if (GST_FLAG_IS_SET (element, GST_OSSSINK_OPEN)) + gst_osssink_close_audio (osssink); + + /* otherwise (READY) we need to open the sound card */ + } else if (GST_STATE_PENDING (element) == GST_STATE_READY) { + if (!GST_FLAG_IS_SET (element, GST_OSSSINK_OPEN)) { + if (!gst_osssink_open_audio (osssink)) { + return GST_STATE_FAILURE; + } + } + } + + if (GST_ELEMENT_CLASS (parent_class)->change_state) + return GST_ELEMENT_CLASS (parent_class)->change_state (element); + + return GST_STATE_SUCCESS; +} + +gboolean +gst_osssink_factory_init (GstPlugin *plugin) +{ + GstElementFactory *factory; + + factory = gst_elementfactory_new ("osssink", GST_TYPE_OSSSINK, &gst_osssink_details); + g_return_val_if_fail (factory != NULL, FALSE); + + gst_elementfactory_add_padtemplate (factory, GST_PADTEMPLATE_GET (osssink_sink_factory)); + + gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory)); + + return TRUE; +} + |