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af_lavfi: switch to new option API

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This makes it actually possible to use the filter with more complicated
filter graphs (such as graphs containing the "," character).
This commit is contained in:
wm4 2013-07-22 14:47:46 +02:00
parent 465b162d13
commit 74146a855c
2 changed files with 30 additions and 10 deletions
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8
DOCS/man/en/af.rst
View File

@ -565,5 +565,9 @@ Available filters are:
.. warning::
Due to shortcomings in the current ``-af`` option parser code,
the filter graph must not contain any ``,``.
Don't forget to quote libavfilter graphs as described in the lavfi
video filter section.
``o=<string>``
AVOptions.

32
audio/filter/af_lavfi.c
View File

@ -38,6 +38,9 @@
#include "audio/fmt-conversion.h"
#include "af.h"
#include "core/m_option.h"
#include "core/av_opts.h"
#define IS_LIBAV_FORK (LIBAVFILTER_VERSION_MICRO < 100)
// FFmpeg and Libav have slightly different APIs, just enough to cause us
@ -68,11 +71,12 @@ struct priv {
// options
char *cfg_graph;
char *cfg_avopts;
};
static void destroy_graph(struct af_instance *af)
{
struct priv *p = af->setup;
struct priv *p = af->priv;
avfilter_graph_free(&p->graph);
p->in = p->out = NULL;
}
@ -80,7 +84,7 @@ static void destroy_graph(struct af_instance *af)
static bool recreate_graph(struct af_instance *af, struct mp_audio *config)
{
void *tmp = talloc_new(NULL);
struct priv *p = af->setup;
struct priv *p = af->priv;
AVFilterContext *in = NULL, *out = NULL;
int r;
@ -96,6 +100,12 @@ static bool recreate_graph(struct af_instance *af, struct mp_audio *config)
if (!graph)
goto error;
if (parse_avopts(graph, p->cfg_avopts) < 0) {
mp_msg(MSGT_VFILTER, MSGL_FATAL, "lavfi: could not set opts: '%s'\n",
p->cfg_avopts);
goto error;
}
AVFilterInOut *outputs = avfilter_inout_alloc();
AVFilterInOut *inputs = avfilter_inout_alloc();
if (!outputs || !inputs)
@ -161,7 +171,7 @@ error:
static int control(struct af_instance *af, int cmd, void *arg)
{
struct priv *p = af->setup;
struct priv *p = af->priv;
switch (cmd) {
case AF_CONTROL_REINIT: {
@ -207,7 +217,7 @@ static int control(struct af_instance *af, int cmd, void *arg)
static struct mp_audio *play(struct af_instance *af, struct mp_audio *data)
{
struct priv *p = af->setup;
struct priv *p = af->priv;
AVFilterLink *l_in = p->in->outputs[0];
@ -281,7 +291,6 @@ static struct mp_audio *play(struct af_instance *af, struct mp_audio *data)
static void uninit(struct af_instance *af)
{
talloc_free(af->setup);
}
static int af_open(struct af_instance *af)
@ -290,17 +299,24 @@ static int af_open(struct af_instance *af)
af->uninit = uninit;
af->play = play;
af->mul = 1;
struct priv *priv = talloc_zero(NULL, struct priv);
af->setup = priv;
struct priv *priv = af->priv;
af->data = &priv->data;
return AF_OK;
}
#define OPT_BASE_STRUCT struct priv
struct af_info af_info_lavfi = {
"libavfilter bridge",
"lavfi",
"",
"",
0,
af_open
af_open,
.priv_size = sizeof(struct priv),
.options = (const struct m_option[]) {
OPT_STRING("graph", cfg_graph, 0),
OPT_STRING("o", cfg_avopts, 0),
{0}
},
};