gstreamer/omx/gstomxaudiodec.h

/*
 * Copyright (C) 2014, Sebastian Dröge <sebastian@centricular.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation
 * version 2.1 of the License.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
 *
 */

#ifndef __GST_OMX_AUDIO_DEC_H__
#define __GST_OMX_AUDIO_DEC_H__

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <gst/gst.h>
#include <gst/audio/audio.h>
#include <gst/audio/gstaudiodecoder.h>

#include "gstomx.h"

G_BEGIN_DECLS

#define GST_TYPE_OMX_AUDIO_DEC \
  (gst_omx_audio_dec_get_type())
#define GST_OMX_AUDIO_DEC(obj) \
  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OMX_AUDIO_DEC,GstOMXAudioDec))
#define GST_OMX_AUDIO_DEC_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OMX_AUDIO_DEC,GstOMXAudioDecClass))
#define GST_OMX_AUDIO_DEC_GET_CLASS(obj) \
  (G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_OMX_AUDIO_DEC,GstOMXAudioDecClass))
#define GST_IS_OMX_AUDIO_DEC(obj) \
  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OMX_AUDIO_DEC))
#define GST_IS_OMX_AUDIO_DEC_CLASS(obj) \
  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OMX_AUDIO_DEC))

typedef struct _GstOMXAudioDec GstOMXAudioDec;
typedef struct _GstOMXAudioDecClass GstOMXAudioDecClass;

struct _GstOMXAudioDec
{
  GstAudioDecoder parent;

  /* < protected > */
  GstOMXComponent *dec;
  GstOMXPort *dec_in_port, *dec_out_port;
  
  GstBufferPool *in_port_pool, *out_port_pool;

  /* < private > */
  GstAudioInfo info;
  GstAudioChannelPosition position[OMX_AUDIO_MAXCHANNELS];
  gint reorder_map[OMX_AUDIO_MAXCHANNELS];
  gboolean needs_reorder;
  GstBuffer *codec_data;
  /* TRUE if the component is configured and saw
   * the first buffer */
  gboolean started;

  GstClockTime last_upstream_ts;

  /* Draining state */
  GMutex drain_lock;
  GCond drain_cond;
  /* TRUE if EOS buffers shouldn't be forwarded */
  gboolean draining;

  GstAdapter *output_adapter;

  GstFlowReturn downstream_flow_ret;
};

struct _GstOMXAudioDecClass
{
  GstAudioDecoderClass parent_class;

  GstOMXClassData cdata;

  gboolean (*is_format_change) (GstOMXAudioDec * self, GstOMXPort * port, GstCaps * caps);
  gboolean (*set_format)       (GstOMXAudioDec * self, GstOMXPort * port, GstCaps * caps);
  gint     (*get_samples_per_frame) (GstOMXAudioDec * self, GstOMXPort * port);
  gboolean (*get_channel_positions) (GstOMXAudioDec * self, GstOMXPort * port, GstAudioChannelPosition position[OMX_AUDIO_MAXCHANNELS]);
};

GType gst_omx_audio_dec_get_type (void);

G_END_DECLS

#endif /* __GST_OMX_AUDIO_DEC_H__ */