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/* 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__ */
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