[deb_ffmpeg.git] / ffmpeg / libavfilter / af_volume.h

/*
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/**
 * @file
 * audio volume filter
 */

#ifndef AVFILTER_AF_VOLUME_H
#define AVFILTER_AF_VOLUME_H

#include "libavutil/common.h"
#include "libavutil/eval.h"
#include "libavutil/float_dsp.h"
#include "libavutil/opt.h"
#include "libavutil/samplefmt.h"

enum PrecisionType {
    PRECISION_FIXED = 0,
    PRECISION_FLOAT,
    PRECISION_DOUBLE,
};

enum EvalMode {
    EVAL_MODE_ONCE,
    EVAL_MODE_FRAME,
    EVAL_MODE_NB
};

enum VolumeVarName {
    VAR_N,
    VAR_NB_CHANNELS,
    VAR_NB_CONSUMED_SAMPLES,
    VAR_NB_SAMPLES,
    VAR_POS,
    VAR_PTS,
    VAR_SAMPLE_RATE,
    VAR_STARTPTS,
    VAR_STARTT,
    VAR_T,
    VAR_TB,
    VAR_VOLUME,
    VAR_VARS_NB
};

enum ReplayGainType {
    REPLAYGAIN_DROP,
    REPLAYGAIN_IGNORE,
    REPLAYGAIN_TRACK,
    REPLAYGAIN_ALBUM,
};

typedef struct VolumeContext {
    const AVClass *class;
    AVFloatDSPContext *fdsp;
    enum PrecisionType precision;
    enum EvalMode eval_mode;
    const char *volume_expr;
    AVExpr *volume_pexpr;
    double var_values[VAR_VARS_NB];

    enum ReplayGainType replaygain;
    double replaygain_preamp;
    int    replaygain_noclip;
    double volume;
    int    volume_i;
    int    channels;
    int    planes;
    enum AVSampleFormat sample_fmt;

    void (*scale_samples)(uint8_t *dst, const uint8_t *src, int nb_samples,
                          int volume);
    int samples_align;
} VolumeContext;

void ff_volume_init_x86(VolumeContext *vol);

#endif /* AVFILTER_AF_VOLUME_H */
Commit	Line	Data
2ba45a60 DM	1	/*
	2	* This file is part of FFmpeg.
	3	*
	4	* FFmpeg is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU Lesser General Public
	6	* License as published by the Free Software Foundation; either
	7	* version 2.1 of the License, or (at your option) any later version.
	8	*
	9	* FFmpeg is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	12	* Lesser General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU Lesser General Public
	15	* License along with FFmpeg; if not, write to the Free Software
	16	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	17	*/
	18
	19	/**
	20	* @file
	21	* audio volume filter
	22	*/
	23
	24	#ifndef AVFILTER_AF_VOLUME_H
	25	#define AVFILTER_AF_VOLUME_H
	26
	27	#include "libavutil/common.h"
	28	#include "libavutil/eval.h"
	29	#include "libavutil/float_dsp.h"
	30	#include "libavutil/opt.h"
	31	#include "libavutil/samplefmt.h"
	32
	33	enum PrecisionType {
	34	PRECISION_FIXED = 0,
	35	PRECISION_FLOAT,
	36	PRECISION_DOUBLE,
	37	};
	38
	39	enum EvalMode {
	40	EVAL_MODE_ONCE,
	41	EVAL_MODE_FRAME,
	42	EVAL_MODE_NB
	43	};
	44
	45	enum VolumeVarName {
	46	VAR_N,
	47	VAR_NB_CHANNELS,
	48	VAR_NB_CONSUMED_SAMPLES,
	49	VAR_NB_SAMPLES,
	50	VAR_POS,
	51	VAR_PTS,
	52	VAR_SAMPLE_RATE,
	53	VAR_STARTPTS,
	54	VAR_STARTT,
	55	VAR_T,
	56	VAR_TB,
	57	VAR_VOLUME,
	58	VAR_VARS_NB
	59	};
	60
	61	enum ReplayGainType {
	62	REPLAYGAIN_DROP,
	63	REPLAYGAIN_IGNORE,
	64	REPLAYGAIN_TRACK,
65	REPLAYGAIN_ALBUM,
66	};
67
68	typedef struct VolumeContext {
69	const AVClass *class;
f6fa7814	70	AVFloatDSPContext *fdsp;
2ba45a60 DM	71	enum PrecisionType precision;
	72	enum EvalMode eval_mode;
	73	const char *volume_expr;
	74	AVExpr *volume_pexpr;
	75	double var_values[VAR_VARS_NB];
	76
	77	enum ReplayGainType replaygain;
	78	double replaygain_preamp;
	79	int replaygain_noclip;
	80	double volume;
	81	int volume_i;
	82	int channels;
	83	int planes;
	84	enum AVSampleFormat sample_fmt;
	85
	86	void (scale_samples)(uint8_t dst, const uint8_t *src, int nb_samples,
	87	int volume);
	88	int samples_align;
	89	} VolumeContext;
	90
	91	void ff_volume_init_x86(VolumeContext *vol);
	92
	93	#endif /* AVFILTER_AF_VOLUME_H */