| /* 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_reset (GstAudioQuantize * quant); |
| |
| void gst_audio_quantize_samples (GstAudioQuantize * quant, |
| const gpointer in[], |
| gpointer out[], guint samples); |
| |
| #endif /* __GST_AUDIO_QUANTIZE_H__ */ |
