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-rw-r--r--sys/oss/gstossdmabuffer.c316
1 files changed, 316 insertions, 0 deletions
diff --git a/sys/oss/gstossdmabuffer.c b/sys/oss/gstossdmabuffer.c
new file mode 100644
index 00000000..47e06d12
--- /dev/null
+++ b/sys/oss/gstossdmabuffer.c
@@ -0,0 +1,316 @@
+/* GStreamer
+ * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
+ * 2005 Wim Taymans <wim@fluendo.com>
+ *
+ * gstossdmabuffer.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 <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <sys/soundcard.h>
+#include <sys/time.h>
+#include <sys/ioctl.h>
+#include <pthread.h>
+
+#include "gstossdmabuffer.h"
+
+static void gst_ossdmabuffer_class_init (GstOssDMABufferClass * klass);
+static void gst_ossdmabuffer_init (GstOssDMABuffer * ossdmabuffer);
+static void gst_ossdmabuffer_dispose (GObject * object);
+static void gst_ossdmabuffer_finalize (GObject * object);
+
+static gboolean gst_ossdmabuffer_acquire (GstRingBuffer * buf,
+ GstRingBufferSpec * spec);
+static gboolean gst_ossdmabuffer_release (GstRingBuffer * buf);
+static gboolean gst_ossdmabuffer_play (GstRingBuffer * buf);
+static gboolean gst_ossdmabuffer_stop (GstRingBuffer * buf);
+
+static GstRingBufferClass *parent_class = NULL;
+
+GType
+gst_ossdmabuffer_get_type (void)
+{
+ static GType ossdmabuffer_type = 0;
+
+ if (!ossdmabuffer_type) {
+ static const GTypeInfo ossdmabuffer_info = {
+ sizeof (GstOssDMABufferClass),
+ NULL,
+ NULL,
+ (GClassInitFunc) gst_ossdmabuffer_class_init,
+ NULL,
+ NULL,
+ sizeof (GstOssDMABuffer),
+ 0,
+ (GInstanceInitFunc) gst_ossdmabuffer_init,
+ NULL
+ };
+
+ ossdmabuffer_type =
+ g_type_register_static (GST_TYPE_RINGBUFFER, "GstOssDMABuffer",
+ &ossdmabuffer_info, 0);
+ }
+ return ossdmabuffer_type;
+}
+
+static void
+gst_ossdmabuffer_class_init (GstOssDMABufferClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstObjectClass *gstobject_class;
+ GstRingBufferClass *gstringbuffer_class;
+
+ gobject_class = (GObjectClass *) klass;
+ gstobject_class = (GstObjectClass *) klass;
+ gstringbuffer_class = (GstRingBufferClass *) klass;
+
+ parent_class = g_type_class_ref (GST_TYPE_RINGBUFFER);
+
+ gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_ossdmabuffer_dispose);
+ gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_ossdmabuffer_finalize);
+
+ gstringbuffer_class->acquire = gst_ossdmabuffer_acquire;
+ gstringbuffer_class->release = gst_ossdmabuffer_release;
+ gstringbuffer_class->play = gst_ossdmabuffer_play;
+ gstringbuffer_class->stop = gst_ossdmabuffer_stop;
+}
+
+static void
+gst_ossdmabuffer_init (GstOssDMABuffer * ossdmabuffer)
+{
+ ossdmabuffer->cond = g_cond_new ();
+ ossdmabuffer->element = g_object_new (GST_TYPE_OSSELEMENT, NULL);
+}
+
+static void
+gst_ossdmabuffer_dispose (GObject * object)
+{
+ G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+gst_ossdmabuffer_finalize (GObject * object)
+{
+ GstOssDMABuffer *obuf = (GstOssDMABuffer *) object;
+
+ g_cond_free (obuf->cond);
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gst_ossdmabuffer_func (GstRingBuffer * buf)
+{
+ fd_set writeset;
+ struct count_info count;
+ GstOssDMABuffer *obuf = (GstOssDMABuffer *) buf;
+
+ GST_LOCK (buf);
+ while (obuf->running) {
+ if (buf->state == GST_RINGBUFFER_STATE_PLAYING) {
+ int segsize;
+
+ GST_UNLOCK (buf);
+
+ segsize = buf->spec.segsize;
+
+ FD_ZERO (&writeset);
+ FD_SET (obuf->fd, &writeset);
+
+ select (obuf->fd + 1, NULL, &writeset, NULL, NULL);
+
+ if (ioctl (obuf->fd, SNDCTL_DSP_GETOPTR, &count) == -1) {
+ perror ("GETOPTR");
+ continue;
+ }
+
+ if (count.blocks > buf->spec.segtotal)
+ count.blocks = buf->spec.segtotal;
+
+ gst_ringbuffer_callback (buf, count.blocks);
+
+ GST_LOCK (buf);
+ } else {
+ GST_OSSDMABUFFER_SIGNAL (obuf);
+ GST_OSSDMABUFFER_WAIT (obuf);
+ }
+ }
+ GST_UNLOCK (buf);
+}
+
+static gboolean
+gst_ossdmabuffer_acquire (GstRingBuffer * buf, GstRingBufferSpec * spec)
+{
+ int tmp;
+ struct audio_buf_info info;
+ GstOssDMABuffer *obuf = (GstOssDMABuffer *) buf;;
+ caddr_t mmap_buf;
+ int mode;
+ gint size;
+ gboolean parsed;
+
+ parsed = gst_osselement_parse_caps (obuf->element, spec->caps);
+ if (!parsed)
+ return FALSE;
+
+ mode = O_RDWR;
+ mode |= O_NONBLOCK;
+
+ obuf->fd = open ("/dev/dsp", mode, 0);
+ if (obuf->fd == -1) {
+ perror ("OPEN");
+ return FALSE;
+ }
+ //obuf->frag = 0x00040008;
+ obuf->frag = 0xffff000a;
+
+ tmp = obuf->element->format;
+ if (ioctl (obuf->fd, SNDCTL_DSP_SETFMT, &tmp) == -1) {
+ perror ("SETFMT");
+ return FALSE;
+ }
+
+ tmp = obuf->element->channels;
+ if (ioctl (obuf->fd, SNDCTL_DSP_STEREO, &tmp) == -1) {
+ perror ("STEREO");
+ return FALSE;
+ }
+
+ tmp = obuf->element->channels;
+ if (ioctl (obuf->fd, SNDCTL_DSP_CHANNELS, &tmp) == -1) {
+ perror ("CHANNELS");
+ return FALSE;
+ }
+
+ tmp = obuf->element->rate;
+ if (ioctl (obuf->fd, SNDCTL_DSP_SPEED, &tmp) == -1) {
+ perror ("SPEED");
+ return FALSE;
+ }
+
+ if (ioctl (obuf->fd, SNDCTL_DSP_GETCAPS, &obuf->caps) == -1) {
+ perror ("/dev/dsp");
+ fprintf (stderr, "Sorry but your sound driver is too old\n");
+ return FALSE;
+ }
+
+ if (!(obuf->caps & DSP_CAP_TRIGGER) || !(obuf->caps & DSP_CAP_MMAP)) {
+ fprintf (stderr, "Sorry but your soundcard can't do this\n");
+ return FALSE;
+ }
+
+ if (ioctl (obuf->fd, SNDCTL_DSP_SETFRAGMENT, &obuf->frag) == -1) {
+ perror ("SETFRAGMENT");
+ return FALSE;
+ }
+
+ if (ioctl (obuf->fd, SNDCTL_DSP_GETOSPACE, &info) == -1) {
+ perror ("GETOSPACE");
+ return FALSE;
+ }
+
+ buf->spec.segsize = info.fragsize;
+ buf->spec.segtotal = info.fragstotal;
+ size = info.fragsize * info.fragstotal;
+ g_print ("segsize %d, segtotal %d\n", info.fragsize, info.fragstotal);
+
+ mmap_buf = (caddr_t) mmap (NULL, size, PROT_WRITE,
+ MAP_FILE | MAP_SHARED, obuf->fd, 0);
+
+ if ((caddr_t) mmap_buf == (caddr_t) - 1) {
+ perror ("mmap (write)");
+ return FALSE;
+ }
+
+ buf->data = gst_buffer_new ();
+ GST_BUFFER_DATA (buf->data) = mmap_buf;
+ GST_BUFFER_SIZE (buf->data) = size;
+ GST_BUFFER_FLAG_SET (buf->data, GST_BUFFER_DONTFREE);
+
+ tmp = 0;
+ if (ioctl (obuf->fd, SNDCTL_DSP_SETTRIGGER, &tmp) == -1) {
+ perror ("SETTRIGGER");
+ return FALSE;
+ }
+
+ GST_LOCK (obuf);
+ obuf->running = TRUE;
+ obuf->thread = g_thread_create ((GThreadFunc) gst_ossdmabuffer_func,
+ buf, TRUE, NULL);
+ GST_OSSDMABUFFER_WAIT (obuf);
+ GST_UNLOCK (obuf);
+
+ return TRUE;
+}
+
+static gboolean
+gst_ossdmabuffer_release (GstRingBuffer * buf)
+{
+ GstOssDMABuffer *obuf = (GstOssDMABuffer *) buf;;
+
+ gst_buffer_unref (buf->data);
+
+ GST_LOCK (obuf);
+ obuf->running = FALSE;
+ GST_OSSDMABUFFER_SIGNAL (obuf);
+ GST_UNLOCK (obuf);
+
+ g_thread_join (obuf->thread);
+
+ return TRUE;
+}
+
+static gboolean
+gst_ossdmabuffer_play (GstRingBuffer * buf)
+{
+ int tmp;
+ GstOssDMABuffer *obuf;
+
+ obuf = (GstOssDMABuffer *) buf;
+
+ tmp = PCM_ENABLE_OUTPUT;
+ if (ioctl (obuf->fd, SNDCTL_DSP_SETTRIGGER, &tmp) == -1) {
+ perror ("SETTRIGGER");
+ }
+ GST_OSSDMABUFFER_SIGNAL (obuf);
+
+ return TRUE;
+}
+
+static gboolean
+gst_ossdmabuffer_stop (GstRingBuffer * buf)
+{
+ int tmp;
+ GstOssDMABuffer *obuf;
+
+ obuf = (GstOssDMABuffer *) buf;
+
+ tmp = 0;
+ if (ioctl (obuf->fd, SNDCTL_DSP_SETTRIGGER, &tmp) == -1) {
+ perror ("SETTRIGGER");
+ }
+ GST_OSSDMABUFFER_WAIT (obuf);
+ buf->playseg = 0;
+
+ return TRUE;
+}
generated by cgit (git 2.34.1) at 2025-06-15 05:51:43 +0000