Go to the source code of this file.
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#define | CONTEXT SineContext |
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#define | FLAGS AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM |
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#define | OPT_GENERIC(name, field, def, min, max, descr, type, deffield, ...) |
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#define | OPT_INT(name, field, def, min, max, descr, ...) OPT_GENERIC(name, field, def, min, max, descr, INT, i64, __VA_ARGS__) |
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#define | OPT_DBL(name, field, def, min, max, descr, ...) OPT_GENERIC(name, field, def, min, max, descr, DOUBLE, dbl, __VA_ARGS__) |
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#define | OPT_DUR(name, field, def, min, max, descr, ...) OPT_GENERIC(name, field, def, min, max, descr, DURATION, str, __VA_ARGS__) |
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#define | OPT_STR(name, field, def, min, max, descr, ...) OPT_GENERIC(name, field, def, min, max, descr, STRING, str, __VA_ARGS__) |
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#define | LOG_PERIOD 15 |
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#define | AMPLITUDE 4095 |
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#define | AMPLITUDE_SHIFT 3 |
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◆ CONTEXT
◆ FLAGS
◆ OPT_GENERIC
◆ OPT_INT
#define OPT_INT |
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| OPT_GENERIC(name, field, def, min, max, descr, INT, i64, __VA_ARGS__) |
◆ OPT_DBL
#define OPT_DBL |
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◆ OPT_DUR
#define OPT_DUR |
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◆ OPT_STR
#define OPT_STR |
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◆ LOG_PERIOD
◆ AMPLITUDE
◆ AMPLITUDE_SHIFT
#define AMPLITUDE_SHIFT 3 |
◆ anonymous enum
Enumerator |
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VAR_N | |
VAR_PTS | |
VAR_T | |
VAR_TB | |
VAR_VARS_NB | |
Definition at line 137 of file asrc_sine.c.
◆ AVFILTER_DEFINE_CLASS()
AVFILTER_DEFINE_CLASS |
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sine |
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◆ make_sin_table()
static void make_sin_table |
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int16_t * |
sin | ) |
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◆ init()
◆ uninit()
◆ query_formats()
◆ config_props()
◆ activate()
◆ sine_options
Initial value:= {
OPT_DBL(
"frequency", frequency, 440, 0, DBL_MAX,
"set the sine frequency",),
OPT_DBL(
"f", frequency, 440, 0, DBL_MAX,
"set the sine frequency",),
OPT_DBL(
"beep_factor", beep_factor, 0, 0, DBL_MAX,
"set the beep frequency factor",),
OPT_DBL(
"b", beep_factor, 0, 0, DBL_MAX,
"set the beep frequency factor",),
OPT_STR(
"samples_per_frame", samples_per_frame,
"1024", 0, 0,
"set the number of samples per frame",),
}
Definition at line 70 of file asrc_sine.c.
◆ var_names
const char* const var_names[] |
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Initial value:= {
"n",
"pts",
"t",
"TB",
}
Definition at line 129 of file asrc_sine.c.
Referenced by init().
◆ sine_outputs
Initial value:= {
{
.name = "default",
},
}
Definition at line 255 of file asrc_sine.c.
◆ ff_asrc_sine
Initial value:= {
.name = "sine",
.priv_class = &sine_class,
}
Definition at line 263 of file asrc_sine.c.
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default minimum maximum flags name is the option name
static av_cold int config_props(AVFilterLink *outlink)
#define FILTER_QUERY_FUNC(func)
static int activate(AVFilterContext *ctx)
static av_cold void uninit(AVFilterContext *ctx)
#define OPT_DBL(name, field, def, min, max, descr,...)
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf type
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this field
#define OPT_DUR(name, field, def, min, max, descr,...)
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several inputs
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
#define OPT_STR(name, field, def, min, max, descr,...)
static const AVFilterPad sine_outputs[]
#define OPT_INT(name, field, def, min, max, descr,...)
static av_cold int init(AVFilterContext *ctx)
#define FILTER_OUTPUTS(array)
static av_cold int query_formats(AVFilterContext *ctx)