mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-19 08:11:16 +00:00
f5a3f70571
Allow an array of sample blocks to be passed to the channel mix and quantizer functions to support non-interleaved formats.
97 lines
3.3 KiB
C
97 lines
3.3 KiB
C
/* GStreamer
|
|
* Copyright (C) 2007 Sebastian Dröge <slomo@circular-chaos.org>
|
|
* (C) 2015 Wim Taymans <wim.taymans@gmail.com>
|
|
*
|
|
* gstaudioquantize.h: quantizes audio to the target format and optionally
|
|
* applies dithering and noise shaping.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <gst/gst.h>
|
|
|
|
#include <gst/audio/audio.h>
|
|
|
|
|
|
#ifndef __GST_AUDIO_QUANTIZE_H__
|
|
#define __GST_AUDIO_QUANTIZE_H__
|
|
|
|
/**
|
|
* GstAudioDitherMethod:
|
|
* @GST_AUDIO_DITHER_NONE: No dithering
|
|
* @GST_AUDIO_DITHER_RPDF: Rectangular dithering
|
|
* @GST_AUDIO_DITHER_TPDF: Triangular dithering (default)
|
|
* @GST_AUDIO_DITHER_TPDF_HF: High frequency triangular dithering
|
|
*
|
|
* Set of available dithering methods.
|
|
*/
|
|
typedef enum
|
|
{
|
|
GST_AUDIO_DITHER_NONE = 0,
|
|
GST_AUDIO_DITHER_RPDF,
|
|
GST_AUDIO_DITHER_TPDF,
|
|
GST_AUDIO_DITHER_TPDF_HF
|
|
} GstAudioDitherMethod;
|
|
|
|
/**
|
|
* GstAudioNoiseShapingMethod:
|
|
* @GST_AUDIO_NOISE_SHAPING_NONE: No noise shaping (default)
|
|
* @GST_AUDIO_NOISE_SHAPING_ERROR_FEEDBACK: Error feedback
|
|
* @GST_AUDIO_NOISE_SHAPING_SIMPLE: Simple 2-pole noise shaping
|
|
* @GST_AUDIO_NOISE_SHAPING_MEDIUM: Medium 5-pole noise shaping
|
|
* @GST_AUDIO_NOISE_SHAPING_HIGH: High 8-pole noise shaping
|
|
*
|
|
* Set of available noise shaping methods
|
|
*/
|
|
typedef enum
|
|
{
|
|
GST_AUDIO_NOISE_SHAPING_NONE = 0,
|
|
GST_AUDIO_NOISE_SHAPING_ERROR_FEEDBACK,
|
|
GST_AUDIO_NOISE_SHAPING_SIMPLE,
|
|
GST_AUDIO_NOISE_SHAPING_MEDIUM,
|
|
GST_AUDIO_NOISE_SHAPING_HIGH
|
|
} GstAudioNoiseShapingMethod;
|
|
|
|
/**
|
|
* GstAudioQuantizeFlags:
|
|
* @GST_AUDIO_QUANTIZE_FLAG_NONE: no flags
|
|
* @GST_AUDIO_QUANTIZE_FLAG_NON_INTERLEAVED: samples are non-interleaved
|
|
*
|
|
* Extra flags that can be passed to gst_audio_quantize_new()
|
|
*/
|
|
typedef enum
|
|
{
|
|
GST_AUDIO_QUANTIZE_FLAG_NONE = 0,
|
|
GST_AUDIO_QUANTIZE_FLAG_NON_INTERLEAVED = (1 << 0)
|
|
} GstAudioQuantizeFlags;
|
|
|
|
|
|
typedef struct _GstAudioQuantize GstAudioQuantize;
|
|
|
|
GstAudioQuantize * gst_audio_quantize_new (GstAudioDitherMethod dither,
|
|
GstAudioNoiseShapingMethod ns,
|
|
GstAudioQuantizeFlags flags,
|
|
GstAudioFormat format,
|
|
guint channels,
|
|
guint quantizer);
|
|
|
|
void gst_audio_quantize_free (GstAudioQuantize * quant);
|
|
|
|
void gst_audio_quantize_samples (GstAudioQuantize * quant,
|
|
const gpointer in[],
|
|
gpointer out[], guint samples);
|
|
|
|
#endif /* __GST_AUDIO_QUANTIZE_H__ */
|