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Diffstat (limited to 'wearable/sys/oss/gstosssink.c')
| -rw-r--r-- | wearable/sys/oss/gstosssink.c | 565 |
1 files changed, 0 insertions, 565 deletions
diff --git a/wearable/sys/oss/gstosssink.c b/wearable/sys/oss/gstosssink.c deleted file mode 100644 index a604d9c..0000000 --- a/wearable/sys/oss/gstosssink.c +++ /dev/null @@ -1,565 +0,0 @@ -/* GStreamer - * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu> - * 2000,2005 Wim Taymans <wim@fluendo.com> - * - * 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. - */ - -/** - * SECTION:element-osssink - * - * This element lets you output sound using the Open Sound System (OSS). - * - * Note that you should almost always use generic audio conversion elements - * like audioconvert and audioresample in front of an audiosink to make sure - * your pipeline works under all circumstances (those conversion elements will - * act in passthrough-mode if no conversion is necessary). - * - * <refsect2> - * <title>Example pipelines</title> - * |[ - * gst-launch -v audiotestsrc ! audioconvert ! volume volume=0.1 ! osssink - * ]| will output a sine wave (continuous beep sound) to your sound card (with - * a very low volume as precaution). - * |[ - * gst-launch -v filesrc location=music.ogg ! decodebin ! audioconvert ! audioresample ! osssink - * ]| will play an Ogg/Vorbis audio file and output it using the Open Sound System. - * </refsect2> - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif -#include <sys/ioctl.h> -#include <fcntl.h> -#include <errno.h> -#include <unistd.h> -#include <string.h> - -#ifdef HAVE_OSS_INCLUDE_IN_SYS -# include <sys/soundcard.h> -#else -# ifdef HAVE_OSS_INCLUDE_IN_ROOT -# include <soundcard.h> -# else -# ifdef HAVE_OSS_INCLUDE_IN_MACHINE -# include <machine/soundcard.h> -# else -# error "What to include?" -# endif /* HAVE_OSS_INCLUDE_IN_MACHINE */ -# endif /* HAVE_OSS_INCLUDE_IN_ROOT */ -#endif /* HAVE_OSS_INCLUDE_IN_SYS */ - -#include "common.h" -#include "gstosssink.h" - -#include <gst/gst-i18n-plugin.h> - -GST_DEBUG_CATEGORY_EXTERN (oss_debug); -#define GST_CAT_DEFAULT oss_debug - -static void gst_oss_sink_base_init (gpointer g_class); -static void gst_oss_sink_class_init (GstOssSinkClass * klass); -static void gst_oss_sink_init (GstOssSink * osssink); - -static void gst_oss_sink_dispose (GObject * object); -static void gst_oss_sink_finalise (GObject * object); - -static void gst_oss_sink_get_property (GObject * object, guint prop_id, - GValue * value, GParamSpec * pspec); -static void gst_oss_sink_set_property (GObject * object, guint prop_id, - const GValue * value, GParamSpec * pspec); - -static GstCaps *gst_oss_sink_getcaps (GstBaseSink * bsink); - -static gboolean gst_oss_sink_open (GstAudioSink * asink); -static gboolean gst_oss_sink_close (GstAudioSink * asink); -static gboolean gst_oss_sink_prepare (GstAudioSink * asink, - GstRingBufferSpec * spec); -static gboolean gst_oss_sink_unprepare (GstAudioSink * asink); -static guint gst_oss_sink_write (GstAudioSink * asink, gpointer data, - guint length); -static guint gst_oss_sink_delay (GstAudioSink * asink); -static void gst_oss_sink_reset (GstAudioSink * asink); - -/* OssSink signals and args */ -enum -{ - LAST_SIGNAL -}; - -#define DEFAULT_DEVICE "/dev/dsp" -enum -{ - PROP_0, - PROP_DEVICE, -}; - -static GstStaticPadTemplate osssink_sink_factory = - GST_STATIC_PAD_TEMPLATE ("sink", - GST_PAD_SINK, - GST_PAD_ALWAYS, - GST_STATIC_CAPS ("audio/x-raw-int, " - "endianness = (int) { " G_STRINGIFY (G_BYTE_ORDER) " }, " - "signed = (boolean) { TRUE, FALSE }, " - "width = (int) 16, " - "depth = (int) 16, " - "rate = (int) [ 1, MAX ], " "channels = (int) [ 1, 2 ]; " - "audio/x-raw-int, " - "signed = (boolean) { TRUE, FALSE }, " - "width = (int) 8, " - "depth = (int) 8, " - "rate = (int) [ 1, MAX ], " "channels = (int) [ 1, 2 ]") - ); - -static GstElementClass *parent_class = NULL; - -/* static guint gst_oss_sink_signals[LAST_SIGNAL] = { 0 }; */ - -GType -gst_oss_sink_get_type (void) -{ - static GType osssink_type = 0; - - if (!osssink_type) { - static const GTypeInfo osssink_info = { - sizeof (GstOssSinkClass), - gst_oss_sink_base_init, - NULL, - (GClassInitFunc) gst_oss_sink_class_init, - NULL, - NULL, - sizeof (GstOssSink), - 0, - (GInstanceInitFunc) gst_oss_sink_init, - }; - - osssink_type = - g_type_register_static (GST_TYPE_AUDIO_SINK, "GstOssSink", - &osssink_info, 0); - } - - return osssink_type; -} - -static void -gst_oss_sink_dispose (GObject * object) -{ - GstOssSink *osssink = GST_OSSSINK (object); - - if (osssink->probed_caps) { - gst_caps_unref (osssink->probed_caps); - osssink->probed_caps = NULL; - } - - G_OBJECT_CLASS (parent_class)->dispose (object); -} - -static void -gst_oss_sink_base_init (gpointer g_class) -{ - GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); - - gst_element_class_set_details_simple (element_class, "Audio Sink (OSS)", - "Sink/Audio", - "Output to a sound card via OSS", - "Erik Walthinsen <omega@cse.ogi.edu>, " - "Wim Taymans <wim.taymans@chello.be>"); - - gst_element_class_add_static_pad_template (element_class, - &osssink_sink_factory); -} - -static void -gst_oss_sink_class_init (GstOssSinkClass * klass) -{ - GObjectClass *gobject_class; - GstBaseSinkClass *gstbasesink_class; - GstAudioSinkClass *gstaudiosink_class; - - gobject_class = (GObjectClass *) klass; - gstbasesink_class = (GstBaseSinkClass *) klass; - gstaudiosink_class = (GstAudioSinkClass *) klass; - - parent_class = g_type_class_peek_parent (klass); - - gobject_class->dispose = gst_oss_sink_dispose; - gobject_class->finalize = gst_oss_sink_finalise; - gobject_class->get_property = gst_oss_sink_get_property; - gobject_class->set_property = gst_oss_sink_set_property; - - g_object_class_install_property (gobject_class, PROP_DEVICE, - g_param_spec_string ("device", "Device", - "OSS device (usually /dev/dspN)", DEFAULT_DEVICE, - G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); - - gstbasesink_class->get_caps = GST_DEBUG_FUNCPTR (gst_oss_sink_getcaps); - - gstaudiosink_class->open = GST_DEBUG_FUNCPTR (gst_oss_sink_open); - gstaudiosink_class->close = GST_DEBUG_FUNCPTR (gst_oss_sink_close); - gstaudiosink_class->prepare = GST_DEBUG_FUNCPTR (gst_oss_sink_prepare); - gstaudiosink_class->unprepare = GST_DEBUG_FUNCPTR (gst_oss_sink_unprepare); - gstaudiosink_class->write = GST_DEBUG_FUNCPTR (gst_oss_sink_write); - gstaudiosink_class->delay = GST_DEBUG_FUNCPTR (gst_oss_sink_delay); - gstaudiosink_class->reset = GST_DEBUG_FUNCPTR (gst_oss_sink_reset); -} - -static void -gst_oss_sink_init (GstOssSink * osssink) -{ - const gchar *device; - - GST_DEBUG_OBJECT (osssink, "initializing osssink"); - - device = g_getenv ("AUDIODEV"); - if (device == NULL) - device = DEFAULT_DEVICE; - osssink->device = g_strdup (device); - osssink->fd = -1; -} - -static void -gst_oss_sink_finalise (GObject * object) -{ - GstOssSink *osssink = GST_OSSSINK (object); - - g_free (osssink->device); - - G_OBJECT_CLASS (parent_class)->finalize ((GObject *) (object)); -} - -static void -gst_oss_sink_set_property (GObject * object, guint prop_id, - const GValue * value, GParamSpec * pspec) -{ - GstOssSink *sink; - - sink = GST_OSSSINK (object); - - switch (prop_id) { - case PROP_DEVICE: - g_free (sink->device); - sink->device = g_value_dup_string (value); - if (sink->probed_caps) { - gst_caps_unref (sink->probed_caps); - sink->probed_caps = NULL; - } - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); - break; - } -} - -static void -gst_oss_sink_get_property (GObject * object, guint prop_id, - GValue * value, GParamSpec * pspec) -{ - GstOssSink *sink; - - sink = GST_OSSSINK (object); - - switch (prop_id) { - case PROP_DEVICE: - g_value_set_string (value, sink->device); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); - break; - } -} - -static GstCaps * -gst_oss_sink_getcaps (GstBaseSink * bsink) -{ - GstOssSink *osssink; - GstCaps *caps; - - osssink = GST_OSSSINK (bsink); - - if (osssink->fd == -1) { - caps = gst_caps_copy (gst_pad_get_pad_template_caps (GST_BASE_SINK_PAD - (bsink))); - } else if (osssink->probed_caps) { - caps = gst_caps_copy (osssink->probed_caps); - } else { - caps = gst_oss_helper_probe_caps (osssink->fd); - if (caps && !gst_caps_is_empty (caps)) { - osssink->probed_caps = gst_caps_copy (caps); - } - } - - return caps; -} - -static gint -ilog2 (gint x) -{ - /* well... hacker's delight explains... */ - x = x | (x >> 1); - x = x | (x >> 2); - x = x | (x >> 4); - x = x | (x >> 8); - x = x | (x >> 16); - x = x - ((x >> 1) & 0x55555555); - x = (x & 0x33333333) + ((x >> 2) & 0x33333333); - x = (x + (x >> 4)) & 0x0f0f0f0f; - x = x + (x >> 8); - x = x + (x >> 16); - return (x & 0x0000003f) - 1; -} - -static gint -gst_oss_sink_get_format (GstBufferFormat fmt) -{ - gint result; - - switch (fmt) { - case GST_MU_LAW: - result = AFMT_MU_LAW; - break; - case GST_A_LAW: - result = AFMT_A_LAW; - break; - case GST_IMA_ADPCM: - result = AFMT_IMA_ADPCM; - break; - case GST_U8: - result = AFMT_U8; - break; - case GST_S16_LE: - result = AFMT_S16_LE; - break; - case GST_S16_BE: - result = AFMT_S16_BE; - break; - case GST_S8: - result = AFMT_S8; - break; - case GST_U16_LE: - result = AFMT_U16_LE; - break; - case GST_U16_BE: - result = AFMT_U16_BE; - break; - case GST_MPEG: - result = AFMT_MPEG; - break; - default: - result = 0; - break; - } - return result; -} - -static gboolean -gst_oss_sink_open (GstAudioSink * asink) -{ - GstOssSink *oss; - int mode; - - oss = GST_OSSSINK (asink); - - mode = O_WRONLY; - mode |= O_NONBLOCK; - - oss->fd = open (oss->device, mode, 0); - if (oss->fd == -1) { - switch (errno) { - case EBUSY: - goto busy; - case EACCES: - goto no_permission; - default: - goto open_failed; - } - } - - return TRUE; - - /* ERRORS */ -busy: - { - GST_ELEMENT_ERROR (oss, RESOURCE, BUSY, - (_("Could not open audio device for playback. " - "Device is being used by another application.")), (NULL)); - return FALSE; - } -no_permission: - { - GST_ELEMENT_ERROR (oss, RESOURCE, OPEN_WRITE, - (_("Could not open audio device for playback. " - "You don't have permission to open the device.")), - GST_ERROR_SYSTEM); - return FALSE; - } -open_failed: - { - GST_ELEMENT_ERROR (oss, RESOURCE, OPEN_WRITE, - (_("Could not open audio device for playback.")), GST_ERROR_SYSTEM); - return FALSE; - } -} - -static gboolean -gst_oss_sink_close (GstAudioSink * asink) -{ - close (GST_OSSSINK (asink)->fd); - GST_OSSSINK (asink)->fd = -1; - return TRUE; -} - -static gboolean -gst_oss_sink_prepare (GstAudioSink * asink, GstRingBufferSpec * spec) -{ - GstOssSink *oss; - struct audio_buf_info info; - int mode; - int tmp; - - oss = GST_OSSSINK (asink); - - /* we opened non-blocking so that we can detect if the device is available - * without hanging forever. We now want to remove the non-blocking flag. */ - mode = fcntl (oss->fd, F_GETFL); - mode &= ~O_NONBLOCK; - if (fcntl (oss->fd, F_SETFL, mode) == -1) { - /* some drivers do no support unsetting the non-blocking flag, try to - * close/open the device then. This is racy but we error out properly. */ - gst_oss_sink_close (asink); - if ((oss->fd = open (oss->device, O_WRONLY, 0)) == -1) - goto non_block; - } - - tmp = gst_oss_sink_get_format (spec->format); - if (tmp == 0) - goto wrong_format; - - if (spec->width != 16 && spec->width != 8) - goto dodgy_width; - - SET_PARAM (oss, SNDCTL_DSP_SETFMT, tmp, "SETFMT"); - if (spec->channels == 2) - SET_PARAM (oss, SNDCTL_DSP_STEREO, 1, "STEREO"); - SET_PARAM (oss, SNDCTL_DSP_CHANNELS, spec->channels, "CHANNELS"); - SET_PARAM (oss, SNDCTL_DSP_SPEED, spec->rate, "SPEED"); - - tmp = ilog2 (spec->segsize); - tmp = ((spec->segtotal & 0x7fff) << 16) | tmp; - GST_DEBUG_OBJECT (oss, "set segsize: %d, segtotal: %d, value: %08x", - spec->segsize, spec->segtotal, tmp); - - SET_PARAM (oss, SNDCTL_DSP_SETFRAGMENT, tmp, "SETFRAGMENT"); - GET_PARAM (oss, SNDCTL_DSP_GETOSPACE, &info, "GETOSPACE"); - - spec->segsize = info.fragsize; - spec->segtotal = info.fragstotal; - - spec->bytes_per_sample = (spec->width / 8) * spec->channels; - oss->bytes_per_sample = (spec->width / 8) * spec->channels; - - GST_DEBUG_OBJECT (oss, "got segsize: %d, segtotal: %d, value: %08x", - spec->segsize, spec->segtotal, tmp); - - return TRUE; - - /* ERRORS */ -non_block: - { - GST_ELEMENT_ERROR (oss, RESOURCE, SETTINGS, (NULL), - ("Unable to set device %s in non blocking mode: %s", - oss->device, g_strerror (errno))); - return FALSE; - } -wrong_format: - { - GST_ELEMENT_ERROR (oss, RESOURCE, SETTINGS, (NULL), - ("Unable to get format %d", spec->format)); - return FALSE; - } -dodgy_width: - { - GST_ELEMENT_ERROR (oss, RESOURCE, SETTINGS, (NULL), - ("unexpected width %d", spec->width)); - return FALSE; - } -} - -static gboolean -gst_oss_sink_unprepare (GstAudioSink * asink) -{ - /* could do a SNDCTL_DSP_RESET, but the OSS manual recommends a close/open */ - - if (!gst_oss_sink_close (asink)) - goto couldnt_close; - - if (!gst_oss_sink_open (asink)) - goto couldnt_reopen; - - return TRUE; - - /* ERRORS */ -couldnt_close: - { - GST_DEBUG_OBJECT (asink, "Could not close the audio device"); - return FALSE; - } -couldnt_reopen: - { - GST_DEBUG_OBJECT (asink, "Could not reopen the audio device"); - return FALSE; - } -} - -static guint -gst_oss_sink_write (GstAudioSink * asink, gpointer data, guint length) -{ - return write (GST_OSSSINK (asink)->fd, data, length); -} - -static guint -gst_oss_sink_delay (GstAudioSink * asink) -{ - GstOssSink *oss; - gint delay = 0; - gint ret; - - oss = GST_OSSSINK (asink); - -#ifdef SNDCTL_DSP_GETODELAY - ret = ioctl (oss->fd, SNDCTL_DSP_GETODELAY, &delay); -#else - ret = -1; -#endif - if (ret < 0) { - audio_buf_info info; - - ret = ioctl (oss->fd, SNDCTL_DSP_GETOSPACE, &info); - - delay = (ret < 0 ? 0 : (info.fragstotal * info.fragsize) - info.bytes); - } - return delay / oss->bytes_per_sample; -} - -static void -gst_oss_sink_reset (GstAudioSink * asink) -{ - /* There's nothing we can do here really: OSS can't handle access to the - * same device/fd from multiple threads and might deadlock or blow up in - * other ways if we try an ioctl SNDCTL_DSP_RESET or similar */ -} |