Add an alsa plugin to output IEC958 frames over S/PDIF

Original commit message from CVS:
* configure.ac:
* ext/Makefile.am:
* ext/alsaspdif/Makefile.am:
* ext/alsaspdif/alsaspdifsink.c: (alsaspdifsink_base_init),
(alsaspdifsink_class_init), (alsaspdifsink_init),
(alsaspdifsink_dispose), (alsaspdifsink_set_property),
(alsaspdifsink_get_property), (alsaspdifsink_provide_clock),
(alsaspdifsink_get_time), (alsaspdifsink_open),
(alsaspdifsink_close), (alsaspdifsink_find_pcm_device),
(alsaspdifsink_write_frame), (alsaspdifsink_event),
(alsaspdifsink_get_times), (alsaspdifsink_current_delay),
(generate_iec958_zero_frame), (alsaspdifsink_render),
(ignore_alsa_err), (alsaspdifsink_change_state), (plugin_init):
* ext/alsaspdif/alsaspdifsink.h:
Add an alsa plugin to output IEC958 frames over S/PDIF

1 files changed, 84 insertions, 0 deletions

diff --git a/ext/alsaspdif/alsaspdifsink.h b/ext/alsaspdif/alsaspdifsink.h
new file mode 100644
index 00000000..04a8ff76
--- /dev/null
+++ b/ext/alsaspdif/alsaspdifsink.h
@@ -0,0 +1,84 @@
+/* Based on a plugin from Martin Soto's Seamless DVD Player.
+ * Copyright (C) 2003, 2004 Martin Soto <martinsoto@users.sourceforge.net>
+ *               2005-6 Michael Smith <msmith@fluendo.com>
+ *
+ * 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.
+ */
+
+#ifndef __ALSASPDIFSINK_H__
+#define __ALSASPDIFSINK_H__
+
+#include <gst/gst.h>
+
+#define ALSA_PCM_NEW_HW_PARAMS_API
+#define ALSA_PCM_NEW_SW_PARAMS_API
+#include <alsa/asoundlib.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_ALSASPDIFSINK \
+  (alsaspdifsink_get_type())
+#define ALSASPDIFSINK(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ALSASPDIFSINK,AlsaSPDIFSink))
+#define ALSASPDIFSINK_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ALSASPDIFSINK,AlsaSPDIFSinkClass))
+#define GST_IS_ALSASPDIFSINK(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ALSASPDIFSINK))
+#define GST_IS_ALSASPDIFSINK_CLASS(obj) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ALSASPDIFSINK))
+#define GST_TYPE_ALSASPDIFSINK (alsaspdifsink_get_type())
+
+typedef struct _AlsaSPDIFSink AlsaSPDIFSink;
+typedef struct _AlsaSPDIFSinkClass AlsaSPDIFSinkClass;
+
+typedef enum {
+  ALSASPDIFSINK_OPEN = GST_ELEMENT_FLAG_LAST,
+  ALSASPDIFSINK_FLAG_LAST  = GST_ELEMENT_FLAG_LAST + 2,
+} AlsaSPDIFSinkFlags;
+
+/* ALSA spdif types. */
+enum {
+  SPDIF_NONE = 0,
+  SPDIF_CON,
+  SPDIF_PRO,
+  SPDIF_PCM
+};
+
+struct _AlsaSPDIFSink {
+  GstBaseSink basesink;
+
+  GstClockTime cur_ts;		/* Current time stamp. */
+
+  snd_pcm_t *pcm;		/* ALSA output device. */
+
+  gint card;                    /* ALSA card number to use */
+  char *device;                 /* ALSA device name */
+
+  GstClock *clock;		/* The clock for this element. */
+
+  guint64 frames;               /* Number of complete frames written */
+  gboolean need_swap;           /* Whether to byte swap outgoing data */
+};
+
+struct _AlsaSPDIFSinkClass {
+  GstBaseSinkClass parent_class;
+};
+
+extern GType	alsaspdifsink_get_type		(void);
+
+G_END_DECLS
+
+#endif /* __DXR3AUDIOINK_H__ */