static av_cold int init(AVFilterContext *ctx)
{
AudioFIRContext *s = ctx->priv;
AVFilterPad pad, vpad;
int ret;
pad = (AVFilterPad){
.name = av_strdup("default"),
.type = AVMEDIA_TYPE_AUDIO,
.config_props = config_output,
};
if (!pad.name)
return AVERROR(ENOMEM);
if (s->response) {
vpad = (AVFilterPad){
.name = av_strdup("filter_response"),
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_video,
};
if (!vpad.name)
return AVERROR(ENOMEM);
}
ret = ff_insert_outpad(ctx, 0, &pad);
if (ret < 0) {
av_freep(&pad.name);
return ret;
}
if (s->response) {
ret = ff_insert_outpad(ctx, 1, &vpad);
if (ret < 0) {
av_freep(&vpad.name);
return ret;
}
}
s->fdsp = avpriv_float_dsp_alloc(0);
if (!s->fdsp)
return AVERROR(ENOMEM);
ff_afir_init(&s->afirdsp);
return 0;
}
static const AVFilterPad afir_inputs[] = {
{
.name = "main",
.type = AVMEDIA_TYPE_AUDIO,
},{
.name = "ir",
static int parse_definition(AVFilterContext *ctx, int nb_pads, void *filter_frame, int is_audio)
{
const int is_input = !!filter_frame;
const char *padtype = is_input ? "in" : "out";
int i = 0, ret = 0;
for (i = 0; i < nb_pads; i++) {
AVFilterPad pad = { 0 };
pad.type = is_audio ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO;
pad.name = av_asprintf("%sput%d", padtype, i);
if (!pad.name)
return AVERROR(ENOMEM);
av_log(ctx, AV_LOG_DEBUG, "Add %s pad %s\n", padtype, pad.name);
if (is_input) {
pad.filter_frame = filter_frame;
ret = ff_insert_inpad(ctx, i, &pad);
} else {
pad.config_props = config_output;
pad.request_frame = request_frame;
ret = ff_insert_outpad(ctx, i, &pad);
}
if (ret < 0) {
av_freep(&pad.name);
return ret;
}
}
return 0;
}
static av_cold int init(AVFilterContext *ctx)
{
ChannelSplitContext *s = ctx->priv;
int nb_channels;
int ret = 0, i;
if (!(s->channel_layout = av_get_channel_layout(s->channel_layout_str))) {
av_log(ctx, AV_LOG_ERROR, "Error parsing channel layout '%s'.\n",
s->channel_layout_str);
ret = AVERROR(EINVAL);
goto fail;
}
nb_channels = av_get_channel_layout_nb_channels(s->channel_layout);
for (i = 0; i < nb_channels; i++) {
uint64_t channel = av_channel_layout_extract_channel(s->channel_layout, i);
AVFilterPad pad = { 0 };
pad.type = AVMEDIA_TYPE_AUDIO;
pad.name = av_get_channel_name(channel);
ff_insert_outpad(ctx, i, &pad);
}
fail:
return ret;
}
static int split_init(AVFilterContext *ctx, const char *args)
{
int i, nb_outputs = 2;
if (args) {
nb_outputs = strtol(args, NULL, 0);
if (nb_outputs <= 0) {
av_log(ctx, AV_LOG_ERROR, "Invalid number of outputs specified: %d.\n",
nb_outputs);
return AVERROR(EINVAL);
}
}
for (i = 0; i < nb_outputs; i++) {
char name[32];
AVFilterPad pad = { 0 };
snprintf(name, sizeof(name), "output%d", i);
pad.type = ctx->filter->inputs[0].type;
pad.name = av_strdup(name);
ff_insert_outpad(ctx, i, &pad);
}
return 0;
}
static av_cold int init(AVFilterContext *ctx)
{
SelectContext *select = ctx->priv;
int i, ret;
if ((ret = av_expr_parse(&select->expr, select->expr_str,
var_names, NULL, NULL, NULL, NULL, 0, ctx)) < 0) {
av_log(ctx, AV_LOG_ERROR, "Error while parsing expression '%s'\n",
select->expr_str);
return ret;
}
select->do_scene_detect = !!strstr(select->expr_str, "scene");
for (i = 0; i < select->nb_outputs; i++) {
AVFilterPad pad = { 0 };
pad.name = av_asprintf("output%d", i);
if (!pad.name)
return AVERROR(ENOMEM);
pad.type = ctx->filter->inputs[0].type;
pad.request_frame = request_frame;
ff_insert_outpad(ctx, i, &pad);
}
return 0;
}
static av_cold int split_init(AVFilterContext *ctx)
{
SplitContext *s = ctx->priv;
int i;
for (i = 0; i < s->nb_outputs; i++) {
char name[32];
AVFilterPad pad = { 0 };
snprintf(name, sizeof(name), "output%d", i);
pad.type = ctx->filter->inputs[0].type;
pad.name = av_strdup(name);
ff_insert_outpad(ctx, i, &pad);
}
return 0;
}
static av_cold int split_init(AVFilterContext *ctx)
{
SplitContext *s = ctx->priv;
int i, ret;
for (i = 0; i < s->nb_outputs; i++) {
char name[32];
AVFilterPad pad = { 0 };
snprintf(name, sizeof(name), "output%d", i);
pad.type = ctx->filter->inputs[0].type;
pad.name = av_strdup(name);
if (!pad.name)
return AVERROR(ENOMEM);
if ((ret = ff_insert_outpad(ctx, i, &pad)) < 0) {
av_freep(&pad.name);
return ret;
}
}
return 0;
}