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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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6b47a37ed8
GObject and calloc() etc are initializing memory to 0, so using 0 as the unknown variant makes it more likely that mistakingly zero-initialized memory does not end up with a wrong DSD format. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4966>
86 lines
2.6 KiB
C
86 lines
2.6 KiB
C
/* GStreamer
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* Copyright (C) 2023 Carlos Rafael Giani <crg7475@mailbox.org>
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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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#pragma once
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#include <gst/gst.h>
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#include <gst/audio/audio-prelude.h>
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G_BEGIN_DECLS
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#if G_BYTE_ORDER == G_BIG_ENDIAN
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#define _GST_DSD_FORMAT_NE(fmt) GST_DSD_FORMAT_ ## fmt ## BE
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#elif G_BYTE_ORDER == G_LITTLE_ENDIAN
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#define _GST_DSD_FORMAT_NE(fmt) GST_DSD_FORMAT_ ## fmt ## LE
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#endif
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/**
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* GstDsdFormat:
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* @GST_DSD_FORMAT_UNKNOWN: unknown / invalid DSD format
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* @GST_DSD_FORMAT_U8: 8 DSD bits in 1 byte
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* @GST_DSD_FORMAT_U16LE: 16 DSD bits in 2 bytes, little endian order
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* @GST_DSD_FORMAT_U16BE: 16 DSD bits in 2 bytes, big endian order
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* @GST_DSD_FORMAT_U32LE: 32 DSD bits in 4 bytes, little endian order
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* @GST_DSD_FORMAT_U32BE: 32 DSD bits in 4 bytes, big endian order
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* @GST_NUM_DSD_FORMATS: number of valid DSD formats
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* @GST_DSD_FORMAT_U16: 16 DSD bits in 2 bytes, native endianness
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* @GST_DSD_FORMAT_U32: 32 DSD bits in 4 bytes, native endianness
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*
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* Enum value describing how DSD bits are grouped.
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*
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* Since: 1.24
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*/
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typedef enum {
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GST_DSD_FORMAT_UNKNOWN = 0,
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GST_DSD_FORMAT_U8,
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GST_DSD_FORMAT_U16LE,
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GST_DSD_FORMAT_U16BE,
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GST_DSD_FORMAT_U32LE,
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GST_DSD_FORMAT_U32BE,
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GST_NUM_DSD_FORMATS,
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/* native endianness equivalents */
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GST_DSD_FORMAT_U16 = _GST_DSD_FORMAT_NE(U16),
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GST_DSD_FORMAT_U32 = _GST_DSD_FORMAT_NE(U32)
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} GstDsdFormat;
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/**
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* GST_DSD_FORMATS_ALL:
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*
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* List of all DSD formats, for use in template caps strings.
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*
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* Big endian formats are preferred, since little-endian ones flip around
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* the DSD bytes, and most DSD hardware uses big endian formats.
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*
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* Since: 1.24
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*/
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#define GST_DSD_FORMATS_ALL "{ DSDU32BE, DSDU16BE, DSDU8, DSDU32LE, DSDU16LE }"
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GST_AUDIO_API
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GstDsdFormat gst_dsd_format_from_string (const gchar *str);
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GST_AUDIO_API
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const gchar * gst_dsd_format_to_string (GstDsdFormat format);
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GST_AUDIO_API
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guint gst_dsd_format_get_width (GstDsdFormat format);
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G_END_DECLS
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