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GST-Tensordecoder-ov_ep/gst-libs/gst/audio/gstringbuffer.h
Wim Taymans 09ca2ec93b gst-libs/gst/audio/: Add flushing mode to the ringbuffer so that it in all cases does not try to handle more audio. T... 
Original commit message from CVS:
* gst-libs/gst/audio/gstbaseaudiosink.c:
(gst_base_audio_sink_event), (gst_base_audio_sink_get_offset),
(gst_base_audio_sink_render):
* gst-libs/gst/audio/gstringbuffer.c:
(gst_ring_buffer_open_device), (gst_ring_buffer_close_device),
(gst_ring_buffer_set_flushing), (gst_ring_buffer_start),
(gst_ring_buffer_pause_unlocked), (gst_ring_buffer_pause),
(gst_ring_buffer_stop), (wait_segment), (gst_ring_buffer_commit),
(gst_ring_buffer_read):
* gst-libs/gst/audio/gstringbuffer.h:
Add flushing mode to the ringbuffer so that it in all cases does
not try to handle more audio. This makes sure it does not try to
block anymore when flushing and fixes a livelock.
2005-10-31 10:30:41 +00:00

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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2005 Wim Taymans <wim@fluendo.com>
*
* gstringbuffer.h:
*
* 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 __GST_RING_BUFFER_H__
#define __GST_RING_BUFFER_H__
#include <gst/gst.h>
G_BEGIN_DECLS
#define GST_TYPE_RING_BUFFER (gst_ring_buffer_get_type())
#define GST_RING_BUFFER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RING_BUFFER,GstRingBuffer))
#define GST_RING_BUFFER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_RING_BUFFER,GstRingBufferClass))
#define GST_RING_BUFFER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_RING_BUFFER, GstRingBufferClass))
#define GST_IS_RING_BUFFER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_RING_BUFFER))
#define GST_IS_RING_BUFFER_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_RING_BUFFER))
typedef struct _GstRingBuffer GstRingBuffer;
typedef struct _GstRingBufferClass GstRingBufferClass;
typedef struct _GstRingBufferSpec GstRingBufferSpec;
/* called to fill data with len bytes of samples */
typedef void (*GstRingBufferCallback) (GstRingBuffer *rbuf, guint8* data, guint len, gpointer user_data);
typedef enum {
GST_RING_BUFFER_STATE_STOPPED,
GST_RING_BUFFER_STATE_PAUSED,
GST_RING_BUFFER_STATE_STARTED,
} GstRingBufferState;
typedef enum {
GST_SEGSTATE_INVALID,
GST_SEGSTATE_EMPTY,
GST_SEGSTATE_FILLED,
GST_SEGSTATE_PARTIAL,
} GstRingBufferSegState;
typedef enum
{
GST_BUFTYPE_LINEAR,
GST_BUFTYPE_FLOAT,
GST_BUFTYPE_MU_LAW,
GST_BUFTYPE_A_LAW,
GST_BUFTYPE_IMA_ADPCM,
GST_BUFTYPE_MPEG,
GST_BUFTYPE_GSM,
} GstBufferFormatType;
typedef enum
{
GST_UNKNOWN,
GST_S8,
GST_U8,
GST_S16_LE,
GST_S16_BE,
GST_U16_LE,
GST_U16_BE,
GST_S24_LE,
GST_S24_BE,
GST_U24_LE,
GST_U24_BE,
GST_S32_LE,
GST_S32_BE,
GST_U32_LE,
GST_U32_BE,
GST_S24_3LE,
GST_S24_3BE,
GST_U24_3LE,
GST_U24_3BE,
GST_S20_3LE,
GST_S20_3BE,
GST_U20_3LE,
GST_U20_3BE,
GST_S18_3LE,
GST_S18_3BE,
GST_U18_3LE,
GST_U18_3BE,
GST_FLOAT32_LE,
GST_FLOAT32_BE,
GST_FLOAT64_LE,
GST_FLOAT64_BE,
GST_MU_LAW,
GST_A_LAW,
GST_IMA_ADPCM,
GST_MPEG,
GST_GSM,
/* fill me */
} GstBufferFormat;
struct _GstRingBufferSpec
{
/* in */
GstCaps *caps; /* the caps of the buffer */
/* in/out */
GstBufferFormatType type;
GstBufferFormat format;
gboolean sign;
gboolean bigend;
gint width;
gint depth;
gint rate;
gint channels;
GstClockTime latency_time; /* the required/actual latency time */
GstClockTime buffer_time; /* the required/actual time of the buffer */
gint segsize; /* size of one buffer segement */
gint segtotal; /* total number of segments */
/* out */
gint bytes_per_sample; /* number of bytes of one sample */
guint8 silence_sample[32]; /* bytes representing silence */
/*< private >*/
gpointer _gst_reserved[GST_PADDING];
};
#define GST_RING_BUFFER_GET_COND(buf) (((GstRingBuffer *)buf)->cond)
#define GST_RING_BUFFER_WAIT(buf) (g_cond_wait (GST_RING_BUFFER_GET_COND (buf), GST_GET_LOCK (buf)))
#define GST_RING_BUFFER_SIGNAL(buf) (g_cond_signal (GST_RING_BUFFER_GET_COND (buf)))
#define GST_RING_BUFFER_BROADCAST(buf)(g_cond_broadcast (GST_RING_BUFFER_GET_COND (buf)))
struct _GstRingBuffer {
GstObject object;
/*< public >*/ /* with LOCK */
GCond *cond;
gboolean open;
gboolean acquired;
GstBuffer *data;
GstRingBufferSpec spec;
GstRingBufferSegState *segstate;
gint samples_per_seg; /* number of samples per segment */
guint8 *empty_seg;
/*< public >*/ /* ATOMIC */
gint state; /* state of the buffer */
gint segdone; /* number of segments processed since last start */
gint segbase; /* segment corresponding to segment 0 */
gint waiting; /* when waiting for a segment to be freed */
/*< private >*/
GstRingBufferCallback callback;
gpointer cb_data;
gboolean flushing;
/*< private >*/
gpointer _gst_reserved[GST_PADDING];
};
struct _GstRingBufferClass {
GstObjectClass parent_class;
/*< public >*/
/* just open the device, don't set any params or allocate anything */
gboolean (*open_device) (GstRingBuffer *buf);
/* allocate the resources for the ringbuffer using the given specs */
gboolean (*acquire) (GstRingBuffer *buf, GstRingBufferSpec *spec);
/* free resources of the ringbuffer */
gboolean (*release) (GstRingBuffer *buf);
/* close the device */
gboolean (*close_device) (GstRingBuffer *buf);
/* playback control */
gboolean (*start) (GstRingBuffer *buf);
gboolean (*pause) (GstRingBuffer *buf);
gboolean (*resume) (GstRingBuffer *buf);
gboolean (*stop) (GstRingBuffer *buf);
/* number of samples queued in device */
guint (*delay) (GstRingBuffer *buf);
/*< private >*/
gpointer _gst_reserved[GST_PADDING];
};
GType gst_ring_buffer_get_type(void);
/* callback stuff */
void gst_ring_buffer_set_callback (GstRingBuffer *buf, GstRingBufferCallback cb,
gpointer user_data);
gboolean gst_ring_buffer_parse_caps (GstRingBufferSpec *spec, GstCaps *caps);
void gst_ring_buffer_debug_spec_caps (GstRingBufferSpec *spec);
void gst_ring_buffer_debug_spec_buff (GstRingBufferSpec *spec);
/* device state */
gboolean gst_ring_buffer_open_device (GstRingBuffer *buf);
gboolean gst_ring_buffer_close_device (GstRingBuffer *buf);
gboolean gst_ring_buffer_device_is_open (GstRingBuffer *buf);
/* allocate resources */
gboolean gst_ring_buffer_acquire (GstRingBuffer *buf, GstRingBufferSpec *spec);
gboolean gst_ring_buffer_release (GstRingBuffer *buf);
gboolean gst_ring_buffer_is_acquired (GstRingBuffer *buf);
/* flushing */
void gst_ring_buffer_set_flushing (GstRingBuffer *buf, gboolean flushing);
/* playback/pause */
gboolean gst_ring_buffer_start (GstRingBuffer *buf);
gboolean gst_ring_buffer_pause (GstRingBuffer *buf);
gboolean gst_ring_buffer_stop (GstRingBuffer *buf);
/* get status */
guint gst_ring_buffer_delay (GstRingBuffer *buf);
guint64 gst_ring_buffer_samples_done (GstRingBuffer *buf);
void gst_ring_buffer_set_sample (GstRingBuffer *buf, guint64 sample);
/* clear all segments */
void gst_ring_buffer_clear_all (GstRingBuffer *buf);
/* commit samples */
guint gst_ring_buffer_commit (GstRingBuffer *buf, guint64 sample,
guchar *data, guint len);
/* read samples */
guint gst_ring_buffer_read (GstRingBuffer *buf, guint64 sample,
guchar *data, guint len);
/* mostly protected */
gboolean gst_ring_buffer_prepare_write (GstRingBuffer *buf, gint *segment, guint8 **writeptr, gint *len);
gboolean gst_ring_buffer_prepare_read (GstRingBuffer *buf, gint *segment, guint8 **readptr, gint *len);
void gst_ring_buffer_clear (GstRingBuffer *buf, gint segment);
void gst_ring_buffer_advance (GstRingBuffer *buf, guint advance);
G_END_DECLS
#endif /* __GST_RING_BUFFER_H__ */
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