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99 lines
3.5 KiB
C
99 lines
3.5 KiB
C
/* GStreamer
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* Copyright (C) <2018> Collabora Ltd.
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* @author George Kiagiadakis <george.kiagiadakis@collabora.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_BUFFER_H__
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#define __GST_AUDIO_BUFFER_H__
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G_BEGIN_DECLS
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/**
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* GstAudioBuffer:
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* @info: a #GstAudioInfo describing the audio properties of this buffer
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* @n_samples: the size of the buffer in samples
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* @n_planes: the number of planes available
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* @planes: an array of @n_planes pointers pointing to the start of each
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* plane in the mapped buffer
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* @buffer: the mapped buffer
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*
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* A structure containing the result of an audio buffer map operation,
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* which is executed with gst_audio_buffer_map(). For non-interleaved (planar)
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* buffers, the beginning of each channel in the buffer has its own pointer in
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* the @planes array. For interleaved buffers, the @planes array only contains
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* one item, which is the pointer to the beginning of the buffer, and @n_planes
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* equals 1.
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*
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* The different channels in @planes are always in the GStreamer channel order.
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*
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* Since: 1.16
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*/
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typedef struct {
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GstAudioInfo info;
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gsize n_samples;
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gint n_planes;
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gpointer *planes;
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GstBuffer *buffer;
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/*< private >*/
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GstMapInfo *map_infos;
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gpointer priv_planes_arr[8];
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GstMapInfo priv_map_infos_arr[8];
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gpointer _gst_reserved[GST_PADDING];
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} GstAudioBuffer;
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GST_AUDIO_API
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gboolean gst_audio_buffer_map (GstAudioBuffer *buffer, const GstAudioInfo *info,
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GstBuffer *gstbuffer, GstMapFlags flags);
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GST_AUDIO_API
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void gst_audio_buffer_unmap (GstAudioBuffer *buffer);
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#define GST_AUDIO_BUFFER_FORMAT(b) (GST_AUDIO_INFO_FORMAT(&(b)->info))
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#define GST_AUDIO_BUFFER_CHANNELS(b) (GST_AUDIO_INFO_CHANNELS(&(b)->info))
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#define GST_AUDIO_BUFFER_LAYOUT(b) (GST_AUDIO_INFO_LAYOUT(&(b)->info))
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#define GST_AUDIO_BUFFER_RATE(b) (GST_AUDIO_INFO_RATE(&(b)->info))
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#define GST_AUDIO_BUFFER_WIDTH(b) (GST_AUDIO_INFO_WIDTH(&(b)->info))
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#define GST_AUDIO_BUFFER_DEPTH(b) (GST_AUDIO_INFO_DEPTH(&(b)->info))
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#define GST_AUDIO_BUFFER_SAMPLE_STRIDE(b) (GST_AUDIO_INFO_WIDTH(&(b)->info) >> 3)
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#define GST_AUDIO_BUFFER_BPS(b) (GST_AUDIO_INFO_DEPTH(&(b)->info) >> 3)
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#define GST_AUDIO_BUFFER_BPF(b) (GST_AUDIO_INFO_BPF(&(b)->info))
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#define GST_AUDIO_BUFFER_N_SAMPLES(b) ((b)->n_samples)
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#define GST_AUDIO_BUFFER_N_PLANES(b) ((b)->n_planes)
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#define GST_AUDIO_BUFFER_PLANE_DATA(b,p) ((b)->planes[p])
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/* the size of each plane in bytes */
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#define GST_AUDIO_BUFFER_PLANE_SIZE(b) \
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(GST_AUDIO_BUFFER_N_SAMPLES(b) * GST_AUDIO_BUFFER_SAMPLE_STRIDE(b) * \
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GST_AUDIO_BUFFER_CHANNELS(b) / GST_AUDIO_BUFFER_N_PLANES(b))
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G_END_DECLS
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#endif /* __GST_AUDIO_BUFFER_H__ */
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