mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-13 12:51:16 +00:00
109 lines
4 KiB
C
109 lines
4 KiB
C
/* GStreamer
|
|
* Copyright (C) <2016> Carlos Rafael Giani <dv at pseudoterminal dot org>
|
|
*
|
|
* 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., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifndef __GST_RAW_AUDIO_PARSE_H__
|
|
#define __GST_RAW_AUDIO_PARSE_H__
|
|
|
|
#include <gst/gst.h>
|
|
#include <gst/audio/audio.h>
|
|
#include "gstrawbaseparse.h"
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define GST_TYPE_RAW_AUDIO_PARSE (gst_raw_audio_parse_get_type())
|
|
#define GST_RAW_AUDIO_PARSE_CAST(obj) ((GstRawAudioParse *)(obj))
|
|
G_DECLARE_FINAL_TYPE (GstRawAudioParse, gst_raw_audio_parse,
|
|
GST, RAW_AUDIO_PARSE, GstRawBaseParse)
|
|
|
|
typedef enum _GstRawAudioParseFormat GstRawAudioParseFormat;
|
|
|
|
typedef struct _GstRawAudioParseConfig GstRawAudioParseConfig;
|
|
|
|
enum _GstRawAudioParseFormat
|
|
{
|
|
GST_RAW_AUDIO_PARSE_FORMAT_PCM,
|
|
GST_RAW_AUDIO_PARSE_FORMAT_MULAW,
|
|
GST_RAW_AUDIO_PARSE_FORMAT_ALAW
|
|
};
|
|
|
|
/* Contains information about the sample rate, format, and channel count to use. */
|
|
struct _GstRawAudioParseConfig
|
|
{
|
|
/* If TRUE, then this configuration is ready to use */
|
|
gboolean ready;
|
|
/* Format of the configuration. Can be PCM, a-law, mu-law. */
|
|
GstRawAudioParseFormat format;
|
|
/* If format is set to PCM, this specifies the exact PCM format in use.
|
|
* Meaningless if format is set to anything other than PCM. */
|
|
GstAudioFormat pcm_format;
|
|
/* Bytes per frame. Calculated as: bpf = bytes_per_sample * num_channels
|
|
* Must be nonzero. This is the size of one frame, the value returned
|
|
* by the GstRawBaseParseClass get_config_frame_size() vfunc. */
|
|
guint bpf;
|
|
/* Sample rate in Hz - must be nonzero */
|
|
guint sample_rate;
|
|
/* Number of channels - must be nonzero */
|
|
guint num_channels;
|
|
/* TRUE if the data is interleaved, FALSE otherwise */
|
|
gboolean interleaved;
|
|
|
|
/* Array of channel positions, one position per channel; its first
|
|
* num_channels values are valid. They are computed out of the number
|
|
* of channels if no positions are explicitly given. */
|
|
GstAudioChannelPosition channel_positions[64];
|
|
|
|
/* If the channel_positions are in a valid GStreamer channel order, then
|
|
* this is not used, and needs_channel_reordering is FALSE. Otherwise,
|
|
* this contains the same positions as in channel_positions, but in the
|
|
* order GStreamer expects. needs_channel_reordering will be TRUE in that
|
|
* case. This is used for reordering samples in outgoing buffers if
|
|
* necessary. */
|
|
GstAudioChannelPosition reordered_channel_positions[64];
|
|
|
|
/* TRUE if channel reordering is necessary, FALSE otherwise. See above
|
|
* for details. */
|
|
gboolean needs_channel_reordering;
|
|
};
|
|
|
|
struct _GstRawAudioParse
|
|
{
|
|
GstRawBaseParse parent;
|
|
|
|
/*< private > */
|
|
|
|
/* Configuration controlled by the object properties. Its ready value
|
|
* is set to TRUE from the start, so it can be used right away.
|
|
*/
|
|
GstRawAudioParseConfig properties_config;
|
|
/* Configuration controlled by the sink caps. Its ready value is
|
|
* initially set to FALSE until valid sink caps come in. It is set to
|
|
* FALSE again when the stream-start event is observed.
|
|
*/
|
|
GstRawAudioParseConfig sink_caps_config;
|
|
/* Currently active configuration. Points either to properties_config
|
|
* or to sink_caps_config. This is never NULL. */
|
|
GstRawAudioParseConfig *current_config;
|
|
};
|
|
|
|
#define GST_TYPE_RAW_AUDIO_PARSE_FORMAT (gst_raw_audio_parse_format_get_type())
|
|
GType gst_raw_audio_parse_format_get_type (void);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif
|