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371e3e460a
We need different export decorators for the different libs. For now no actual change though, just rename before the release, and add prelude headers to define the new decorator to GST_EXPORT.
155 lines
5.5 KiB
C
155 lines
5.5 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Library <2001> Thomas Vander Stichele <thomas@apestaart.org>
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* <2011> Wim Taymans <wim.taymans@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_AUDIO_AUDIO_H__
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#include <gst/audio/audio.h>
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#endif
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#ifndef __GST_AUDIO_INFO_H__
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#define __GST_AUDIO_INFO_H__
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G_BEGIN_DECLS
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typedef struct _GstAudioInfo GstAudioInfo;
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/**
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* GstAudioFlags:
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* @GST_AUDIO_FLAG_NONE: no valid flag
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* @GST_AUDIO_FLAG_UNPOSITIONED: the position array explicitly
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* contains unpositioned channels.
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*
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* Extra audio flags
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*/
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typedef enum {
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GST_AUDIO_FLAG_NONE = 0,
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GST_AUDIO_FLAG_UNPOSITIONED = (1 << 0)
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} GstAudioFlags;
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/**
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* GstAudioLayout:
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* @GST_AUDIO_LAYOUT_INTERLEAVED: interleaved audio
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* @GST_AUDIO_LAYOUT_NON_INTERLEAVED: non-interleaved audio
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*
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* Layout of the audio samples for the different channels.
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*/
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typedef enum {
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GST_AUDIO_LAYOUT_INTERLEAVED = 0,
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GST_AUDIO_LAYOUT_NON_INTERLEAVED
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} GstAudioLayout;
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/**
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* GstAudioInfo:
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* @finfo: the format info of the audio
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* @flags: additional audio flags
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* @layout: audio layout
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* @rate: the audio sample rate
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* @channels: the number of channels
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* @bpf: the number of bytes for one frame, this is the size of one
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* sample * @channels
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* @position: the positions for each channel
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*
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* Information describing audio properties. This information can be filled
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* in from GstCaps with gst_audio_info_from_caps().
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*
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* Use the provided macros to access the info in this structure.
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*/
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struct _GstAudioInfo {
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const GstAudioFormatInfo *finfo;
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GstAudioFlags flags;
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GstAudioLayout layout;
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gint rate;
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gint channels;
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gint bpf;
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GstAudioChannelPosition position[64];
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/*< private >*/
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gpointer _gst_reserved[GST_PADDING];
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};
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#define GST_TYPE_AUDIO_INFO (gst_audio_info_get_type ())
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GST_AUDIO_API
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GType gst_audio_info_get_type (void);
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#define GST_AUDIO_INFO_IS_VALID(i) ((i)->finfo != NULL && (i)->rate > 0 && (i)->channels > 0 && (i)->bpf > 0)
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#define GST_AUDIO_INFO_FORMAT(i) (GST_AUDIO_FORMAT_INFO_FORMAT((i)->finfo))
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#define GST_AUDIO_INFO_NAME(i) (GST_AUDIO_FORMAT_INFO_NAME((i)->finfo))
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#define GST_AUDIO_INFO_WIDTH(i) (GST_AUDIO_FORMAT_INFO_WIDTH((i)->finfo))
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#define GST_AUDIO_INFO_DEPTH(i) (GST_AUDIO_FORMAT_INFO_DEPTH((i)->finfo))
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#define GST_AUDIO_INFO_BPS(info) (GST_AUDIO_INFO_DEPTH(info) >> 3)
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#define GST_AUDIO_INFO_IS_INTEGER(i) (GST_AUDIO_FORMAT_INFO_IS_INTEGER((i)->finfo))
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#define GST_AUDIO_INFO_IS_FLOAT(i) (GST_AUDIO_FORMAT_INFO_IS_FLOAT((i)->finfo))
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#define GST_AUDIO_INFO_IS_SIGNED(i) (GST_AUDIO_FORMAT_INFO_IS_SIGNED((i)->finfo))
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#define GST_AUDIO_INFO_ENDIANNESS(i) (GST_AUDIO_FORMAT_INFO_ENDIANNESS((i)->finfo))
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#define GST_AUDIO_INFO_IS_LITTLE_ENDIAN(i) (GST_AUDIO_FORMAT_INFO_IS_LITTLE_ENDIAN((i)->finfo))
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#define GST_AUDIO_INFO_IS_BIG_ENDIAN(i) (GST_AUDIO_FORMAT_INFO_IS_BIG_ENDIAN((i)->finfo))
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#define GST_AUDIO_INFO_FLAGS(info) ((info)->flags)
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#define GST_AUDIO_INFO_IS_UNPOSITIONED(info) ((info)->flags & GST_AUDIO_FLAG_UNPOSITIONED)
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#define GST_AUDIO_INFO_LAYOUT(info) ((info)->layout)
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#define GST_AUDIO_INFO_RATE(info) ((info)->rate)
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#define GST_AUDIO_INFO_CHANNELS(info) ((info)->channels)
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#define GST_AUDIO_INFO_BPF(info) ((info)->bpf)
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#define GST_AUDIO_INFO_POSITION(info,c) ((info)->position[c])
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GST_AUDIO_API
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GstAudioInfo * gst_audio_info_new (void);
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GST_AUDIO_API
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void gst_audio_info_init (GstAudioInfo *info);
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GST_AUDIO_API
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GstAudioInfo * gst_audio_info_copy (const GstAudioInfo *info);
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GST_AUDIO_API
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void gst_audio_info_free (GstAudioInfo *info);
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GST_AUDIO_API
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void gst_audio_info_set_format (GstAudioInfo *info, GstAudioFormat format,
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gint rate, gint channels,
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const GstAudioChannelPosition *position);
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GST_AUDIO_API
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gboolean gst_audio_info_from_caps (GstAudioInfo *info, const GstCaps *caps);
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GST_AUDIO_API
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GstCaps * gst_audio_info_to_caps (const GstAudioInfo *info);
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GST_AUDIO_API
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gboolean gst_audio_info_convert (const GstAudioInfo * info,
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GstFormat src_fmt, gint64 src_val,
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GstFormat dest_fmt, gint64 * dest_val);
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GST_AUDIO_API
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gboolean gst_audio_info_is_equal (const GstAudioInfo *info,
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const GstAudioInfo *other);
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#ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstAudioInfo, gst_audio_info_free)
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#endif
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G_END_DECLS
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#endif /* __GST_AUDIO_INFO_H__ */
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