mirror of https://github.com/mpv-player/mpv
276 lines
8.7 KiB
C
276 lines
8.7 KiB
C
#ifndef __aop_h__
|
|
#define __aop_h__
|
|
|
|
#include <stdio.h>
|
|
|
|
#include "af_mp.h"
|
|
#include "config.h"
|
|
#include "control.h"
|
|
#include "af_format.h"
|
|
|
|
struct af_instance_s;
|
|
|
|
// Audio data chunk
|
|
typedef struct af_data_s
|
|
{
|
|
void* audio; // data buffer
|
|
int len; // buffer length
|
|
int rate; // sample rate
|
|
int nch; // number of channels
|
|
int format; // format
|
|
int bps; // bytes per sample
|
|
} af_data_t;
|
|
|
|
// Fraction, used to calculate buffer lengths
|
|
typedef struct frac_s
|
|
{
|
|
int n; // Numerator
|
|
int d; // Denominator
|
|
} frac_t;
|
|
|
|
int af_gcd(register int a, register int b);
|
|
void af_frac_cancel(frac_t *f);
|
|
void af_frac_mul(frac_t *out, const frac_t *in);
|
|
|
|
// Flags used for defining the behavior of an audio filter
|
|
#define AF_FLAGS_REENTRANT 0x00000000
|
|
#define AF_FLAGS_NOT_REENTRANT 0x00000001
|
|
|
|
/* Audio filter information not specific for current instance, but for
|
|
a specific filter */
|
|
typedef struct af_info_s
|
|
{
|
|
const char *info;
|
|
const char *name;
|
|
const char *author;
|
|
const char *comment;
|
|
const int flags;
|
|
int (*open)(struct af_instance_s* vf);
|
|
} af_info_t;
|
|
|
|
// Linked list of audio filters
|
|
typedef struct af_instance_s
|
|
{
|
|
af_info_t* info;
|
|
int (*control)(struct af_instance_s* af, int cmd, void* arg);
|
|
void (*uninit)(struct af_instance_s* af);
|
|
af_data_t* (*play)(struct af_instance_s* af, af_data_t* data);
|
|
void* setup; // setup data for this specific instance and filter
|
|
af_data_t* data; // configuration for outgoing data stream
|
|
struct af_instance_s* next;
|
|
struct af_instance_s* prev;
|
|
double delay; // Delay caused by the filter [ms]
|
|
frac_t mul; /* length multiplier: how much does this instance change
|
|
the length of the buffer. */
|
|
}af_instance_t;
|
|
|
|
// Initialization flags
|
|
extern int* af_cpu_speed;
|
|
|
|
#define AF_INIT_AUTO 0x00000000
|
|
#define AF_INIT_SLOW 0x00000001
|
|
#define AF_INIT_FAST 0x00000002
|
|
#define AF_INIT_FORCE 0x00000003
|
|
#define AF_INIT_TYPE_MASK 0x00000003
|
|
|
|
#define AF_INIT_INT 0x00000000
|
|
#define AF_INIT_FLOAT 0x00000004
|
|
#define AF_INIT_FORMAT_MASK 0x00000004
|
|
|
|
// Default init type
|
|
#ifndef AF_INIT_TYPE
|
|
#if defined(HAVE_SSE) || defined(HAVE_3DNOW)
|
|
#define AF_INIT_TYPE (af_cpu_speed?*af_cpu_speed:AF_INIT_FAST)
|
|
#else
|
|
#define AF_INIT_TYPE (af_cpu_speed?*af_cpu_speed:AF_INIT_SLOW)
|
|
#endif
|
|
#endif
|
|
|
|
// Configuration switches
|
|
typedef struct af_cfg_s{
|
|
int force; // Initialization type
|
|
char** list; /* list of names of filters that are added to filter
|
|
list during first initialization of stream */
|
|
}af_cfg_t;
|
|
|
|
// Current audio stream
|
|
typedef struct af_stream_s
|
|
{
|
|
// The first and last filter in the list
|
|
af_instance_t* first;
|
|
af_instance_t* last;
|
|
// Storage for input and output data formats
|
|
af_data_t input;
|
|
af_data_t output;
|
|
// Configuration for this stream
|
|
af_cfg_t cfg;
|
|
}af_stream_t;
|
|
|
|
/*********************************************
|
|
// Return values
|
|
*/
|
|
|
|
#define AF_DETACH 2
|
|
#define AF_OK 1
|
|
#define AF_TRUE 1
|
|
#define AF_FALSE 0
|
|
#define AF_UNKNOWN -1
|
|
#define AF_ERROR -2
|
|
#define AF_FATAL -3
|
|
|
|
|
|
|
|
/*********************************************
|
|
// Export functions
|
|
*/
|
|
|
|
/* Initialize the stream "s". This function creates a new filter list
|
|
if necessary according to the values set in input and output. Input
|
|
and output should contain the format of the current movie and the
|
|
formate of the preferred output respectively. The function is
|
|
reentrant i.e. if called with an already initialized stream the
|
|
stream will be reinitialized. If the binary parameter
|
|
"force_output" is set, the output format will be converted to the
|
|
format given in "s", otherwise the output fromat in the last filter
|
|
will be copied "s". The return value is 0 if success and -1 if
|
|
failure */
|
|
int af_init(af_stream_t* s);
|
|
|
|
// Uninit and remove all filters
|
|
void af_uninit(af_stream_t* s);
|
|
|
|
/* Add filter during execution. This function adds the filter "name"
|
|
to the stream s. The filter will be inserted somewhere nice in the
|
|
list of filters. The return value is a pointer to the new filter,
|
|
If the filter couldn't be added the return value is NULL. */
|
|
af_instance_t* af_add(af_stream_t* s, char* name);
|
|
|
|
// Uninit and remove the filter "af"
|
|
void af_remove(af_stream_t* s, af_instance_t* af);
|
|
|
|
/* Find filter in the dynamic filter list using it's name This
|
|
function is used for finding already initialized filters */
|
|
af_instance_t* af_get(af_stream_t* s, char* name);
|
|
|
|
// Filter data chunk through the filters in the list
|
|
af_data_t* af_play(af_stream_t* s, af_data_t* data);
|
|
|
|
// send control to all filters, starting with the last until
|
|
// one accepts the command with AF_OK.
|
|
// Returns the accepting filter or NULL if none was found.
|
|
af_instance_t *af_control_any_rev (af_stream_t* s, int cmd, void* arg);
|
|
|
|
/* Calculate how long the output from the filters will be given the
|
|
input length "len". The calculated length is >= the actual
|
|
length */
|
|
int af_outputlen(af_stream_t* s, int len);
|
|
|
|
/* Calculate how long the input to the filters should be to produce a
|
|
certain output length, i.e. the return value of this function is
|
|
the input length required to produce the output length "len". The
|
|
calculated length is <= the actual length */
|
|
int af_inputlen(af_stream_t* s, int len);
|
|
|
|
/* Calculate how long the input IN to the filters should be to produce
|
|
a certain output length OUT but with the following three constraints:
|
|
1. IN <= max_insize, where max_insize is the maximum possible input
|
|
block length
|
|
2. OUT <= max_outsize, where max_outsize is the maximum possible
|
|
output block length
|
|
3. If possible OUT >= len.
|
|
Return -1 in case of error */
|
|
int af_calc_insize_constrained(af_stream_t* s, int len,
|
|
int max_outsize,int max_insize);
|
|
|
|
/* Calculate the total delay caused by the filters */
|
|
double af_calc_delay(af_stream_t* s);
|
|
|
|
// Helper functions and macros used inside the audio filters
|
|
|
|
/* Helper function called by the macro with the same name only to be
|
|
called from inside filters */
|
|
int af_resize_local_buffer(af_instance_t* af, af_data_t* data);
|
|
|
|
/* Helper function used to calculate the exact buffer length needed
|
|
when buffers are resized. The returned length is >= than what is
|
|
needed */
|
|
int af_lencalc(frac_t mul, af_data_t* data);
|
|
|
|
/* Helper function used to convert to gain value from dB. Returns
|
|
AF_OK if of and AF_ERROR if fail */
|
|
int af_from_dB(int n, float* in, float* out, float k, float mi, float ma);
|
|
/* Helper function used to convert from gain value to dB. Returns
|
|
AF_OK if of and AF_ERROR if fail */
|
|
int af_to_dB(int n, float* in, float* out, float k);
|
|
/* Helper function used to convert from ms to sample time*/
|
|
int af_from_ms(int n, float* in, int* out, int rate, float mi, float ma);
|
|
/* Helper function used to convert from sample time to ms */
|
|
int af_to_ms(int n, int* in, float* out, int rate);
|
|
/* Helper function for testing the output format */
|
|
int af_test_output(struct af_instance_s* af, af_data_t* out);
|
|
|
|
float af_softclip(float a);
|
|
|
|
/** Print a list of all available audio filters */
|
|
void af_help(void);
|
|
|
|
/* Fill the missing parameters in the af_data_t structure.
|
|
Used for stuffing bps with a value based on format. */
|
|
void af_fix_parameters(af_data_t *data);
|
|
|
|
/* Memory reallocation macro: if a local buffer is used (i.e. if the
|
|
filter doesn't operate on the incoming buffer this macro must be
|
|
called to ensure the buffer is big enough. */
|
|
#define RESIZE_LOCAL_BUFFER(a,d)\
|
|
((a->data->len < af_lencalc(a->mul,d))?af_resize_local_buffer(a,d):AF_OK)
|
|
|
|
/* Some other useful macro definitions*/
|
|
#ifndef min
|
|
#define min(a,b)(((a)>(b))?(b):(a))
|
|
#endif
|
|
|
|
#ifndef max
|
|
#define max(a,b)(((a)>(b))?(a):(b))
|
|
#endif
|
|
|
|
#ifndef clamp
|
|
#define clamp(a,min,max) (((a)>(max))?(max):(((a)<(min))?(min):(a)))
|
|
#endif
|
|
|
|
#ifndef sign
|
|
#define sign(a) (((a)>0)?(1):(-1))
|
|
#endif
|
|
|
|
#ifndef lrnd
|
|
#define lrnd(a,b) ((b)((a)>=0.0?(a)+0.5:(a)-0.5))
|
|
#endif
|
|
|
|
/* Error messages */
|
|
|
|
typedef struct af_msg_cfg_s
|
|
{
|
|
int level; /* Message level for debug and error messages max = 2
|
|
min = -2 default = 0 */
|
|
FILE* err; // Stream to print error messages to
|
|
FILE* msg; // Stream to print information messages to
|
|
}af_msg_cfg_t;
|
|
|
|
extern af_msg_cfg_t af_msg_cfg; // Message
|
|
|
|
#define AF_MSG_FATAL -3 // Fatal error exit immediately
|
|
#define AF_MSG_ERROR -2 // Error return gracefully
|
|
#define AF_MSG_WARN -1 // Print warning but do not exit (can be suppressed)
|
|
#define AF_MSG_INFO 0 // Important information
|
|
#define AF_MSG_VERBOSE 1 // Print this if verbose is enabled
|
|
#define AF_MSG_DEBUG0 2 // Print if very verbose
|
|
#define AF_MSG_DEBUG1 3 // Print if very very verbose
|
|
|
|
/* Macro for printing error messages */
|
|
#ifndef af_msg
|
|
#define af_msg(lev, args... ) \
|
|
(((lev)<AF_MSG_WARN)?(fprintf(af_msg_cfg.err?af_msg_cfg.err:stderr, ## args )): \
|
|
(((lev)<=af_msg_cfg.level)?(fprintf(af_msg_cfg.msg?af_msg_cfg.msg:stdout, ## args )):0))
|
|
#endif
|
|
|
|
#endif /* __aop_h__ */
|