[fdkaac.git] / src / lpcm.h

/* 
 * Copyright (C) 2013 nu774
 * For conditions of distribution and use, see copyright notice in COPYING
 */
#ifndef LPCM_H
#define LPCM_H

enum pcm_type {
    PCM_TYPE_UNKNOWN = 0,
    PCM_TYPE_SINT = 1,
    PCM_TYPE_UINT = 2,
    PCM_TYPE_FLOAT = 4,
    PCM_TYPE_SINT_BE = (8|1),
    PCM_TYPE_UINT_BE = (8|2),
    PCM_TYPE_FLOAT_BE = (8|4),
};

typedef struct pcm_sample_description_t {
    enum pcm_type sample_type;
    uint32_t sample_rate;
    uint8_t bits_per_channel;
    uint8_t bytes_per_frame;
    uint8_t channels_per_frame;
    uint32_t channel_mask;
} pcm_sample_description_t;

#define PCM_IS_SINT(desc) ((desc)->sample_type & 1)
#define PCM_IS_UINT(desc) ((desc)->sample_type & 2)
#define PCM_IS_FLOAT(desc) ((desc)->sample_type & 4)
#define PCM_IS_BIG_ENDIAN(desc) ((desc)->sample_type & 8)
#define PCM_BYTES_PER_CHANNEL(desc) \
    ((desc)->bytes_per_frame / (desc)->channels_per_frame)

int pcm_convert_to_native_sint16(const pcm_sample_description_t *format,
                                 const void *input, uint32_t nframes,
                                 int16_t **result, uint32_t *osize);
#endif
Commit	Line	Data
48e2f01c	1	/*
	2	* Copyright (C) 2013 nu774
	3	* For conditions of distribution and use, see copyright notice in COPYING
	4	*/
	5	#ifndef LPCM_H
	6	#define LPCM_H
	7
	8	enum pcm_type {
	9	PCM_TYPE_UNKNOWN = 0,
	10	PCM_TYPE_SINT = 1,
	11	PCM_TYPE_UINT = 2,
	12	PCM_TYPE_FLOAT = 4,
	13	PCM_TYPE_SINT_BE = (8\|1),
	14	PCM_TYPE_UINT_BE = (8\|2),
	15	PCM_TYPE_FLOAT_BE = (8\|4),
	16	};
	17
	18	typedef struct pcm_sample_description_t {
	19	enum pcm_type sample_type;
	20	uint32_t sample_rate;
	21	uint8_t bits_per_channel;
	22	uint8_t bytes_per_frame;
	23	uint8_t channels_per_frame;
	24	uint32_t channel_mask;
	25	} pcm_sample_description_t;
	26
	27	#define PCM_IS_SINT(desc) ((desc)->sample_type & 1)
	28	#define PCM_IS_UINT(desc) ((desc)->sample_type & 2)
	29	#define PCM_IS_FLOAT(desc) ((desc)->sample_type & 4)
	30	#define PCM_IS_BIG_ENDIAN(desc) ((desc)->sample_type & 8)
	31	#define PCM_BYTES_PER_CHANNEL(desc) \
	32	((desc)->bytes_per_frame / (desc)->channels_per_frame)
	33
	34	int pcm_convert_to_native_sint16(const pcm_sample_description_t *format,
	35	const void *input, uint32_t nframes,
	36	int16_t *result, uint32_t osize);
	37	#endif