af_lv2.c File Reference

#include <lilv/lilv.h>
#include <lv2/lv2plug.in/ns/ext/atom/atom.h>
#include <lv2/lv2plug.in/ns/ext/buf-size/buf-size.h>
#include "libavutil/avstring.h"
#include "libavutil/channel_layout.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "audio.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"

Go to the source code of this file.

Data Structures
struct	URITable
struct	LV2Context

Macros
#define	OFFSET(x)   offsetof(LV2Context, x)
#define	FLAGS   AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_FILTERING_PARAM

Functions
	AVFILTER_DEFINE_CLASS (lv2)
static void	uri_table_init (URITable *table)
static void	uri_table_destroy (URITable *table)
static LV2_URID	uri_table_map (LV2_URID_Map_Handle handle, const char *uri)
static const char *	uri_table_unmap (LV2_URID_Map_Handle handle, LV2_URID urid)
static void	connect_ports (LV2Context *s, AVFrame *in, AVFrame *out)
static int	filter_frame (AVFilterLink *inlink, AVFrame *in)
static int	request_frame (AVFilterLink *outlink)
static int	config_output (AVFilterLink *outlink)
static av_cold int	init (AVFilterContext *ctx)
static int	query_formats (AVFilterContext *ctx)
static int	process_command (AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
static av_cold void	uninit (AVFilterContext *ctx)

Variables
static const AVOption	lv2_options []
static const LV2_Feature	buf_size_features [3]
static const AVFilterPad	lv2_outputs []
const AVFilter	ff_af_lv2

Detailed Description

LV2 wrapper

Definition in file af_lv2.c.

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(LV2Context, x)

Definition at line 92 of file af_lv2.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_FILTERING_PARAM

Definition at line 93 of file af_lv2.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

lv2

)

uri_table_init()

static void uri_table_init ( URITable *  table )

static

Definition at line 111 of file af_lv2.c.

Referenced by config_output().

uri_table_destroy()

static void uri_table_destroy ( URITable *  table )

static

Definition at line 117 of file af_lv2.c.

Referenced by uninit().

uri_table_map()

static LV2_URID uri_table_map ( LV2_URID_Map_Handle  handle, const char *  uri  )

static

Definition at line 128 of file af_lv2.c.

Referenced by config_output(), and connect_ports().

uri_table_unmap()

static const char* uri_table_unmap ( LV2_URID_Map_Handle  handle, LV2_URID  urid  )

static

Definition at line 158 of file af_lv2.c.

Referenced by config_output().

connect_ports()

static void connect_ports ( LV2Context *  s, AVFrame *  in, AVFrame *  out  )

static

Definition at line 169 of file af_lv2.c.

Referenced by filter_frame(), and request_frame().

filter_frame()

static int filter_frame ( AVFilterLink *  inlink, AVFrame *  in  )

static

Definition at line 202 of file af_lv2.c.

Referenced by init().

request_frame()

static int request_frame ( AVFilterLink *  outlink )

static

Definition at line 230 of file af_lv2.c.

config_output()

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 265 of file af_lv2.c.

init()

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 392 of file af_lv2.c.

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 477 of file af_lv2.c.

process_command()

static int process_command ( AVFilterContext *  ctx, const char *  cmd, const char *  args, char *  res, int  res_len, int  flags  )

static

Definition at line 544 of file af_lv2.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 564 of file af_lv2.c.

Variable Documentation

lv2_options

const AVOption lv2_options[]

static

Initial value:

= {
    { "plugin", "set plugin uri", OFFSET(plugin_uri), AV_OPT_TYPE_STRING, .flags = FLAGS },
    { "p",      "set plugin uri", OFFSET(plugin_uri), AV_OPT_TYPE_STRING, .flags = FLAGS },
    { "controls", "set plugin options", OFFSET(options), AV_OPT_TYPE_STRING, .flags = FLAGS },
    { "c",        "set plugin options", OFFSET(options), AV_OPT_TYPE_STRING, .flags = FLAGS },
    { "sample_rate", "set sample rate", OFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64=44100}, 1, INT32_MAX, FLAGS },
    { "s",           "set sample rate", OFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64=44100}, 1, INT32_MAX, FLAGS },
    { "nb_samples", "set the number of samples per requested frame", OFFSET(nb_samples), AV_OPT_TYPE_INT, {.i64=1024}, 1, INT_MAX, FLAGS },
    { "n",          "set the number of samples per requested frame", OFFSET(nb_samples), AV_OPT_TYPE_INT, {.i64=1024}, 1, INT_MAX, FLAGS },
    { "duration", "set audio duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64=-1}, -1, INT64_MAX, FLAGS },
    { "d",        "set audio duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64=-1}, -1, INT64_MAX, FLAGS },
    { NULL }
}

Definition at line 95 of file af_lv2.c.

buf_size_features

const LV2_Feature buf_size_features[3]

static

Initial value:

= {
    { LV2_BUF_SIZE__powerOf2BlockLength, NULL },
    { LV2_BUF_SIZE__fixedBlockLength,    NULL },
    { LV2_BUF_SIZE__boundedBlockLength,  NULL },
}

Definition at line 259 of file af_lv2.c.

Referenced by config_output().

lv2_outputs

const AVFilterPad lv2_outputs[]

static

Initial value:

= {
    {
        .name          = "default",
        .type          = AVMEDIA_TYPE_AUDIO,
        .config_props  = config_output,
        .request_frame = request_frame,
    },
}

Definition at line 588 of file af_lv2.c.

ff_af_lv2

const AVFilter ff_af_lv2

Initial value:

= {
    .name          = "lv2",
    .description   = NULL_IF_CONFIG_SMALL("Apply LV2 effect."),
    .priv_size     = sizeof(LV2Context),
    .priv_class    = &lv2_class,
    .init          = init,
    .uninit        = uninit,
    .process_command = process_command,
    .inputs        = 0,
    FILTER_OUTPUTS(lv2_outputs),
    FILTER_QUERY_FUNC(query_formats),
    .flags         = AVFILTER_FLAG_DYNAMIC_INPUTS,
}

Definition at line 597 of file af_lv2.c.