mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-22 08:17:01 +00:00
c946e323f6
Library bits to support non-interleaved audio https://bugzilla.gnome.org/show_bug.cgi?id=751605
98 lines
3.5 KiB
C
98 lines
3.5 KiB
C
/* GStreamer
|
|
* Copyright (C) <2018> Collabora Ltd.
|
|
* @author George Kiagiadakis <george.kiagiadakis@collabora.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., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifndef __GST_AUDIO_AUDIO_H__
|
|
#include <gst/audio/audio.h>
|
|
#endif
|
|
|
|
#ifndef __GST_AUDIO_BUFFER_H__
|
|
#define __GST_AUDIO_BUFFER_H__
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
/**
|
|
* GstAudioBuffer:
|
|
* @info: a #GstAudioInfo describing the audio properties of this buffer
|
|
* @n_samples: the size of the buffer in samples
|
|
* @n_planes: the number of planes available
|
|
* @planes: an array of @n_planes pointers pointing to the start of each
|
|
* plane in the mapped buffer
|
|
* @buffer: the mapped buffer
|
|
*
|
|
* A structure containing the result of an audio buffer map operation,
|
|
* which is executed with gst_audio_buffer_map(). For non-interleaved (planar)
|
|
* buffers, the beginning of each channel in the buffer has its own pointer in
|
|
* the @planes array. For interleaved buffers, the @planes array only contains
|
|
* one item, which is the pointer to the beginning of the buffer, and @n_planes
|
|
* equals 1.
|
|
*
|
|
* The different channels in @planes are always in the GStreamer channel order.
|
|
*
|
|
* Since: 1.16
|
|
*/
|
|
typedef struct {
|
|
GstAudioInfo info;
|
|
|
|
gsize n_samples;
|
|
gint n_planes;
|
|
gpointer *planes;
|
|
|
|
GstBuffer *buffer;
|
|
|
|
/*< private >*/
|
|
GstMapInfo *map_infos;
|
|
gpointer priv_planes_arr[8];
|
|
GstMapInfo priv_map_infos_arr[8];
|
|
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
} GstAudioBuffer;
|
|
|
|
|
|
GST_AUDIO_API
|
|
gboolean gst_audio_buffer_map (GstAudioBuffer *buffer, const GstAudioInfo *info,
|
|
GstBuffer *gstbuffer, GstMapFlags flags);
|
|
|
|
GST_AUDIO_API
|
|
void gst_audio_buffer_unmap (GstAudioBuffer *buffer);
|
|
|
|
|
|
#define GST_AUDIO_BUFFER_FORMAT(b) (GST_AUDIO_INFO_FORMAT(&(b)->info))
|
|
#define GST_AUDIO_BUFFER_CHANNELS(b) (GST_AUDIO_INFO_CHANNELS(&(b)->info))
|
|
#define GST_AUDIO_BUFFER_LAYOUT(b) (GST_AUDIO_INFO_LAYOUT(&(b)->info))
|
|
#define GST_AUDIO_BUFFER_RATE(b) (GST_AUDIO_INFO_RATE(&(b)->info))
|
|
|
|
#define GST_AUDIO_BUFFER_WIDTH(b) (GST_AUDIO_INFO_WIDTH(&(b)->info))
|
|
#define GST_AUDIO_BUFFER_DEPTH(b) (GST_AUDIO_INFO_DEPTH(&(b)->info))
|
|
#define GST_AUDIO_BUFFER_SAMPLE_STRIDE(b) (GST_AUDIO_INFO_WIDTH(&(b)->info) >> 3)
|
|
#define GST_AUDIO_BUFFER_BPS(b) (GST_AUDIO_INFO_DEPTH(&(b)->info) >> 3)
|
|
#define GST_AUDIO_BUFFER_BPF(b) (GST_AUDIO_INFO_BPF(&(b)->info))
|
|
|
|
#define GST_AUDIO_BUFFER_N_SAMPLES(b) ((b)->n_samples)
|
|
#define GST_AUDIO_BUFFER_N_PLANES(b) ((b)->n_planes)
|
|
#define GST_AUDIO_BUFFER_PLANE_DATA(b,p) ((b)->planes[p])
|
|
|
|
/* the size of each plane in bytes */
|
|
#define GST_AUDIO_BUFFER_PLANE_SIZE(b) \
|
|
(GST_AUDIO_BUFFER_N_SAMPLES(b) * GST_AUDIO_BUFFER_SAMPLE_STRIDE(b) * \
|
|
GST_AUDIO_BUFFER_CHANNELS(b) / GST_AUDIO_BUFFER_N_PLANES(b))
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_AUDIO_BUFFER_H__ */
|