static av_cold int init(AVFilterContext *ctx)
{
MixContext *s = ctx->priv;
int i;
for (i = 0; i < s->nb_inputs; i++) {
char name[32];
AVFilterPad pad = { 0 };
snprintf(name, sizeof(name), "input%d", i);
pad.type = AVMEDIA_TYPE_AUDIO;
pad.name = av_strdup(name);
if (!pad.name)
return AVERROR(ENOMEM);
pad.filter_frame = filter_frame;
ff_insert_inpad(ctx, i, &pad);
}
s->fdsp = avpriv_float_dsp_alloc(0);
if (!s->fdsp)
return AVERROR(ENOMEM);
return 0;
}
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)
{
StackContext *s = ctx->priv;
int i, ret;
if (!strcmp(ctx->filter->name, "vstack"))
s->is_vertical = 1;
s->frames = av_calloc(s->nb_inputs, sizeof(*s->frames));
if (!s->frames)
return AVERROR(ENOMEM);
for (i = 0; i < s->nb_inputs; i++) {
AVFilterPad pad = { 0 };
pad.type = AVMEDIA_TYPE_VIDEO;
pad.name = av_asprintf("input%d", i);
if (!pad.name)
return AVERROR(ENOMEM);
pad.filter_frame = filter_frame;
if ((ret = ff_insert_inpad(ctx, i, &pad)) < 0) {
av_freep(&pad.name);
return ret;
}
}
return 0;
}
static av_cold int program_opencl_init(AVFilterContext *avctx)
{
ProgramOpenCLContext *ctx = avctx->priv;
int err;
ff_opencl_filter_init(avctx);
ctx->ocf.output_width = ctx->width;
ctx->ocf.output_height = ctx->height;
if (!strcmp(avctx->filter->name, "openclsrc")) {
if (!ctx->ocf.output_width || !ctx->ocf.output_height) {
av_log(avctx, AV_LOG_ERROR, "OpenCL source requires output "
"dimensions to be specified.\n");
return AVERROR(EINVAL);
}
ctx->nb_inputs = 0;
ctx->ocf.output_format = ctx->source_format;
} else {
int i;
ctx->frames = av_mallocz_array(ctx->nb_inputs,
sizeof(*ctx->frames));
if (!ctx->frames)
return AVERROR(ENOMEM);
for (i = 0; i < ctx->nb_inputs; i++) {
AVFilterPad input;
memset(&input, 0, sizeof(input));
input.type = AVMEDIA_TYPE_VIDEO;
input.name = av_asprintf("input%d", i);
if (!input.name)
return AVERROR(ENOMEM);
input.config_props = &ff_opencl_filter_config_input;
err = ff_insert_inpad(avctx, i, &input);
if (err < 0) {
av_freep(&input.name);
return err;
}
}
}
return 0;
}
static av_cold int init(AVFilterContext *ctx)
{
MixContext *s = ctx->priv;
char *p, *arg, *saveptr = NULL;
float last_weight = 1.f;
int i, ret;
for (i = 0; i < s->nb_inputs; i++) {
AVFilterPad pad = { 0 };
pad.type = AVMEDIA_TYPE_AUDIO;
pad.name = av_asprintf("input%d", i);
if (!pad.name)
return AVERROR(ENOMEM);
if ((ret = ff_insert_inpad(ctx, i, &pad)) < 0) {
av_freep(&pad.name);
return ret;
}
}
s->fdsp = avpriv_float_dsp_alloc(0);
if (!s->fdsp)
return AVERROR(ENOMEM);
s->weights = av_mallocz_array(s->nb_inputs, sizeof(*s->weights));
if (!s->weights)
return AVERROR(ENOMEM);
p = s->weights_str;
for (i = 0; i < s->nb_inputs; i++) {
if (!(arg = av_strtok(p, " ", &saveptr)))
break;
p = NULL;
sscanf(arg, "%f", &last_weight);
s->weights[i] = last_weight;
s->weight_sum += last_weight;
}
for (; i < s->nb_inputs; i++) {
s->weights[i] = last_weight;
s->weight_sum += last_weight;
}
return 0;
}
static av_cold int init(AVFilterContext *ctx)
{
MixContext *s = ctx->priv;
char *p, *arg, *saveptr = NULL;
int i, ret;
s->frames = av_calloc(s->nb_inputs, sizeof(*s->frames));
if (!s->frames)
return AVERROR(ENOMEM);
s->weights = av_calloc(s->nb_inputs, sizeof(*s->weights));
if (!s->weights)
return AVERROR(ENOMEM);
for (i = 0; i < s->nb_inputs; i++) {
AVFilterPad pad = { 0 };
pad.type = AVMEDIA_TYPE_VIDEO;
pad.name = av_asprintf("input%d", i);
if (!pad.name)
return AVERROR(ENOMEM);
if ((ret = ff_insert_inpad(ctx, i, &pad)) < 0) {
av_freep(&pad.name);
return ret;
}
}
p = s->weights_str;
for (i = 0; i < s->nb_inputs; i++) {
if (!(arg = av_strtok(p, " ", &saveptr)))
break;
p = NULL;
sscanf(arg, "%f", &s->weights[i]);
s->wfactor += s->weights[i];
}
s->wfactor = 1 / s->wfactor;
return 0;
}
static av_cold int init(AVFilterContext *ctx)
{
LADSPAContext *s = ctx->priv;
LADSPA_Descriptor_Function descriptor_fn;
const LADSPA_Descriptor *desc;
LADSPA_PortDescriptor pd;
AVFilterPad pad = { NULL };
char *p, *arg, *saveptr = NULL;
unsigned long nb_ports;
int i;
if (!s->dl_name) {
av_log(ctx, AV_LOG_ERROR, "No plugin name provided\n");
return AVERROR(EINVAL);
}
if (s->dl_name[0] == '/' || s->dl_name[0] == '.') {
// argument is a path
s->dl_handle = dlopen(s->dl_name, RTLD_LOCAL|RTLD_NOW);
} else {
// argument is a shared object name
char *paths = av_strdup(getenv("LADSPA_PATH"));
const char *separator = ":";
if (paths) {
p = paths;
while ((arg = av_strtok(p, separator, &saveptr)) && !s->dl_handle) {
s->dl_handle = try_load(arg, s->dl_name);
p = NULL;
}
}
av_free(paths);
if (!s->dl_handle && (paths = av_asprintf("%s/.ladspa/lib", getenv("HOME")))) {
s->dl_handle = try_load(paths, s->dl_name);
av_free(paths);
}
if (!s->dl_handle)
s->dl_handle = try_load("/usr/local/lib/ladspa", s->dl_name);
if (!s->dl_handle)
s->dl_handle = try_load("/usr/lib/ladspa", s->dl_name);
}
if (!s->dl_handle) {
av_log(ctx, AV_LOG_ERROR, "Failed to load '%s'\n", s->dl_name);
return AVERROR(EINVAL);
}
descriptor_fn = dlsym(s->dl_handle, "ladspa_descriptor");
if (!descriptor_fn) {
av_log(ctx, AV_LOG_ERROR, "Could not find ladspa_descriptor: %s\n", dlerror());
return AVERROR(EINVAL);
}
// Find the requested plugin, or list plugins
if (!s->plugin) {
av_log(ctx, AV_LOG_INFO, "The '%s' library contains the following plugins:\n", s->dl_name);
av_log(ctx, AV_LOG_INFO, "I = Input Channels\n");
av_log(ctx, AV_LOG_INFO, "O = Output Channels\n");
av_log(ctx, AV_LOG_INFO, "I:O %-25s %s\n", "Plugin", "Description");
av_log(ctx, AV_LOG_INFO, "\n");
for (i = 0; desc = descriptor_fn(i); i++) {
unsigned long inputs = 0, outputs = 0;
count_ports(desc, &inputs, &outputs);
av_log(ctx, AV_LOG_INFO, "%lu:%lu %-25s %s\n", inputs, outputs, desc->Label,
av_x_if_null(desc->Name, "?"));
av_log(ctx, AV_LOG_VERBOSE, "Maker: %s\n", av_x_if_null(desc->Maker, "?"));
av_log(ctx, AV_LOG_VERBOSE, "Copyright: %s\n", av_x_if_null(desc->Copyright, "?"));
}
return AVERROR_EXIT;
} else {
for (i = 0;; i++) {
desc = descriptor_fn(i);
if (!desc) {
av_log(ctx, AV_LOG_ERROR, "Could not find plugin: %s\n", s->plugin);
return AVERROR(EINVAL);
}
if (desc->Label && !strcmp(desc->Label, s->plugin))
break;
}
}
s->desc = desc;
nb_ports = desc->PortCount;
s->ipmap = av_calloc(nb_ports, sizeof(*s->ipmap));
s->opmap = av_calloc(nb_ports, sizeof(*s->opmap));
s->icmap = av_calloc(nb_ports, sizeof(*s->icmap));
s->ocmap = av_calloc(nb_ports, sizeof(*s->ocmap));
s->ictlv = av_calloc(nb_ports, sizeof(*s->ictlv));
s->octlv = av_calloc(nb_ports, sizeof(*s->octlv));
s->ctl_needs_value = av_calloc(nb_ports, sizeof(*s->ctl_needs_value));
if (!s->ipmap || !s->opmap || !s->icmap ||
!s->ocmap || !s->ictlv || !s->octlv || !s->ctl_needs_value)
return AVERROR(ENOMEM);
for (i = 0; i < nb_ports; i++) {
pd = desc->PortDescriptors[i];
if (LADSPA_IS_PORT_AUDIO(pd)) {
if (LADSPA_IS_PORT_INPUT(pd)) {
s->ipmap[s->nb_inputs] = i;
s->nb_inputs++;
} else if (LADSPA_IS_PORT_OUTPUT(pd)) {
s->opmap[s->nb_outputs] = i;
s->nb_outputs++;
}
} else if (LADSPA_IS_PORT_CONTROL(pd)) {
if (LADSPA_IS_PORT_INPUT(pd)) {
s->icmap[s->nb_inputcontrols] = i;
if (LADSPA_IS_HINT_HAS_DEFAULT(desc->PortRangeHints[i].HintDescriptor))
set_default_ctl_value(s, s->nb_inputcontrols, s->icmap, s->ictlv);
else
s->ctl_needs_value[s->nb_inputcontrols] = 1;
s->nb_inputcontrols++;
} else if (LADSPA_IS_PORT_OUTPUT(pd)) {
s->ocmap[s->nb_outputcontrols] = i;
s->nb_outputcontrols++;
}
}
}
// List Control Ports if "help" is specified
if (s->options && !strcmp(s->options, "help")) {
if (!s->nb_inputcontrols) {
av_log(ctx, AV_LOG_INFO,
"The '%s' plugin does not have any input controls.\n",
desc->Label);
} else {
av_log(ctx, AV_LOG_INFO,
"The '%s' plugin has the following input controls:\n",
desc->Label);
for (i = 0; i < s->nb_inputcontrols; i++)
print_ctl_info(ctx, AV_LOG_INFO, s, i, s->icmap, s->ictlv, 0);
}
return AVERROR_EXIT;
}
// Parse control parameters
p = s->options;
while (s->options) {
LADSPA_Data val;
int ret;
if (!(arg = av_strtok(p, "|", &saveptr)))
break;
p = NULL;
if (sscanf(arg, "c%d=%f", &i, &val) != 2) {
av_log(ctx, AV_LOG_ERROR, "Invalid syntax.\n");
return AVERROR(EINVAL);
}
if ((ret = set_control(ctx, i, val)) < 0)
return ret;
s->ctl_needs_value[i] = 0;
}
// Check if any controls are not set
for (i = 0; i < s->nb_inputcontrols; i++) {
if (s->ctl_needs_value[i]) {
av_log(ctx, AV_LOG_ERROR, "Control c%d must be set.\n", i);
print_ctl_info(ctx, AV_LOG_ERROR, s, i, s->icmap, s->ictlv, 0);
return AVERROR(EINVAL);
}
}
pad.type = AVMEDIA_TYPE_AUDIO;
if (s->nb_inputs) {
pad.name = av_asprintf("in0:%s%lu", desc->Label, s->nb_inputs);
if (!pad.name)
return AVERROR(ENOMEM);
pad.filter_frame = filter_frame;
pad.config_props = config_input;
if (ff_insert_inpad(ctx, ctx->nb_inputs, &pad) < 0) {
av_freep(&pad.name);
return AVERROR(ENOMEM);
}
}
av_log(ctx, AV_LOG_DEBUG, "ports: %lu\n", nb_ports);
av_log(ctx, AV_LOG_DEBUG, "inputs: %lu outputs: %lu\n",
s->nb_inputs, s->nb_outputs);
av_log(ctx, AV_LOG_DEBUG, "input controls: %lu output controls: %lu\n",
s->nb_inputcontrols, s->nb_outputcontrols);
return 0;
}
