@@ -35,6 +35,7 @@ version <next>

 - Fraps: use BT.709 colorspace by default for yuv, as reference fraps decoder does

 - make decoding alpha optional for prores, ffv1 and vp6 by setting

   the skip_alpha flag.

+- ladspa wrapper filter

 version 2.0:

@@ -193,6 +193,7 @@ External library support:

   --enable-frei0r          enable frei0r video filtering

   --enable-gnutls          enable gnutls [no]

   --disable-iconv          disable iconv [autodetect]

+  --enable-ladspa          enable LADSPA audio filtering

   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]

   --enable-libass          enable libass subtitles rendering [no]

   --enable-libbluray       enable BluRay reading using libbluray [no]

@@ -1162,6 +1163,7 @@ EXTERNAL_LIBRARY_LIST="

     frei0r

     gnutls

     iconv

+    ladspa

     libaacplus

     libass

     libbluray

@@ -2210,6 +2212,7 @@ histeq_filter_deps="gpl"

 hqdn3d_filter_deps="gpl"

 interlace_filter_deps="gpl"

 kerndeint_filter_deps="gpl"

+ladspa_filter_deps="ladspa dlopen"

 mcdeint_filter_deps="avcodec gpl"

 movie_filter_deps="avcodec avformat"

 mp_filter_deps="gpl avcodec swscale inline_asm"

@@ -4210,6 +4213,7 @@ enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||

 enabled fontconfig        && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit

 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }

 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init

+enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }

 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883

 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus

 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init

@@ -1400,6 +1400,104 @@ ffmpeg -i fl -i fr -i fc -i sl -i sr -i lfe -filter_complex

 out

 @end example

+@section ladspa

+

+Load a LADSPA (Linux Audio Developer's Simple Plugin API) plugin.

+

+@table @option

+@item file, f

+Specifies the name of LADSPA plugin library to load. If the environment

+variable @env{LADSPA_PATH} is defined, the LADSPA plugin is searched in

+each one of the directories specified by the colon separated list in

+@env{LADSPA_PATH}, otherwise in the standard LADSPA paths, which are in

+this order: @file{HOME/.ladspa/lib/}, @file{/usr/local/lib/ladspa/},

+@file{/usr/lib/ladspa/}.

+

+@item plugin, p

+Specifies the plugin within the library. Some libraries contain only

+one plugin, but others contain many of them. If this is not set filter

+will list all available plugins within the specified library.

+

+@item controls, c

+Set the '|' separated list of controls which are zero or more floating point

+values that determine the behavior of the loaded plugin (for example delay,

+threshold or gain).

+Controls need to be defined using the following syntax:

+c0=@var{value0}|c1=@var{value1}|c2=@var{value2}|..., where

+@var{valuei} is the value set on the @var{i}-th control.

+If @option{controls} is set to @code{help}, all available controls and

+their valid ranges are printed.

+

+@item sample_rate, s

+Specify the sample rate, default to 44100. Only used if plugin have

+zero inputs.

+

+@item nb_samples, n

+Set the number of samples per channel per each output frame, default

+is 1024. Only used if plugin have zero inputs.

+

+@item duration, d

+Set the minimum duration of the sourced audio. See the function

+@code{av_parse_time()} for the accepted format, also check the "Time duration"

+section in the ffmpeg-utils manual.

+Note that the resulting duration may be greater than the specified duration,

+as the generated audio is always cut at the end of a complete frame.

+If not specified, or the expressed duration is negative, the audio is

+supposed to be generated forever.

+Only used if plugin have zero inputs.

+

+@end table

+

+@subsection Examples

+

+@itemize

+@item

+List all available plugins within amp (LADSPA example plugin) library:

+@example

+ladspa=file=amp

+@end example

+

+@item

+List all available controls and their valid ranges for @code{vcf_notch}

+plugin from @code{VCF} library:

+@example

+ladspa=f=vcf:p=vcf_notch:c=help

+@end example

+

+@item

+Simulate low quality audio equipment using @code{Computer Music Toolkit} (CMT)

+plugin library:

+@example

+ladspa=file=cmt:plugin=lofi:controls=c0=22|c1=12|c2=12

+@end example

+

+@item

+Add reverberation to the audio using TAP-plugins

+(Tom's Audio Processing plugins):

+@example

+ladspa=file=tap_reverb:tap_reverb

+@end example

+

+@item

+Generate white noise, with 0.2 amplitude:

+@example

+ladspa=file=cmt:noise_source_white:c=c0=.2

+@end example

+

+@item

+Generate 20 bpm clicks using plugin @code{C* Click - Metronome} from the

+@code{C* Audio Plugin Suite} (CAPS) library:

+@example

+ladspa=file=caps:Click:c=c1=20'

+@end example

+

+@item

+Apply @code{C* Eq10X2 - Stereo 10-band equaliser} effect:

+@example

+ladspa=caps:Eq10X2:c=c0=-48|c9=-24|c3=12|c4=2

+@end example

+@end itemize

+

 @section lowpass

 Apply a low-pass filter with 3dB point frequency.

@@ -91,6 +91,7 @@ OBJS-$(CONFIG_EBUR128_FILTER)                += f_ebur128.o

 OBJS-$(CONFIG_EQUALIZER_FILTER)              += af_biquads.o

 OBJS-$(CONFIG_HIGHPASS_FILTER)               += af_biquads.o

 OBJS-$(CONFIG_JOIN_FILTER)                   += af_join.o

+OBJS-$(CONFIG_LADSPA_FILTER)                 += af_ladspa.o

 OBJS-$(CONFIG_LOWPASS_FILTER)                += af_biquads.o

 OBJS-$(CONFIG_PAN_FILTER)                    += af_pan.o

 OBJS-$(CONFIG_RESAMPLE_FILTER)               += af_resample.o

new file mode 100644

@@ -0,0 +1,673 @@

+/*

+ * Copyright (c) 2013 Paul B Mahol

+ * Copyright (c) 2011 Mina Nagy Zaki

+ *

+ * This file is part of FFmpeg.

+ *

+ * FFmpeg is free software; you can redistribute it and/or

+ * modify it under the terms of the GNU Lesser General Public

+ * License as published by the Free Software Foundation; either

+ * version 2.1 of the License, or (at your option) any later version.

+ *

+ * FFmpeg is distributed in the hope that it will be useful,

+ * but WITHOUT ANY WARRANTY; without even the implied warranty of

+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

+ * Lesser General Public License for more details.

+ *

+ * You should have received a copy of the GNU Lesser General Public

+ * License along with FFmpeg; if not, write to the Free Software

+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

+ */

+

+/**

+ * @file

+ * LADSPA wrapper

+ */

+

+#include <dlfcn.h>

+#include <ladspa.h>

+#include "libavutil/avstring.h"

+#include "libavutil/channel_layout.h"

+#include "libavutil/opt.h"

+#include "audio.h"

+#include "avfilter.h"

+#include "internal.h"

+

+typedef struct LADSPAContext {

+    const AVClass *class;

+    char *dl_name;

+    char *plugin;

+    char *options;

+    void *dl_handle;

+

+    unsigned long nb_inputs;

+    unsigned long *ipmap;      /* map input number to port number */

+

+    unsigned long nb_inputcontrols;

+    unsigned long *icmap;      /* map input control number to port number */

+    LADSPA_Data *ictlv;        /* input controls values */

+

+    unsigned long nb_outputs;

+    unsigned long *opmap;      /* map output number to port number */

+

+    unsigned long nb_outputcontrols;

+    unsigned long *ocmap;      /* map output control number to port number */

+    LADSPA_Data *octlv;        /* output controls values */

+

+    const LADSPA_Descriptor *desc;

+    int *ctl_needs_value;

+    int nb_handles;

+    LADSPA_Handle *handles;

+

+    int sample_rate;

+    int nb_samples;

+    int64_t pts;

+    int64_t duration;

+} LADSPAContext;

+

+#define OFFSET(x) offsetof(LADSPAContext, x)

+#define FLAGS AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_FILTERING_PARAM

+static const AVOption ladspa_options[] = {

+    { "file", "set library name or full path", OFFSET(dl_name), AV_OPT_TYPE_STRING, .flags = FLAGS },

+    { "f",    "set library name or full path", OFFSET(dl_name), AV_OPT_TYPE_STRING, .flags = FLAGS },

+    { "plugin", "set plugin name", OFFSET(plugin), AV_OPT_TYPE_STRING, .flags = FLAGS },

+    { "p",      "set plugin name", OFFSET(plugin), 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 }

+};

+

+AVFILTER_DEFINE_CLASS(ladspa);

+

+static void print_ctl_info(AVFilterContext *ctx, int level,

+                           LADSPAContext *s, int ctl, unsigned long *map,

+                           LADSPA_Data *values, int print)

+{

+    const LADSPA_PortRangeHint *h = s->desc->PortRangeHints + map[ctl];

+

+    av_log(ctx, level, "c%i: %s [", ctl, s->desc->PortNames[map[ctl]]);

+

+    if (LADSPA_IS_HINT_TOGGLED(h->HintDescriptor)) {

+        av_log(ctx, level, "toggled (1 or 0)");

+

+        if (LADSPA_IS_HINT_HAS_DEFAULT(h->HintDescriptor))

+            av_log(ctx, level, " (default %i)", (int)values[ctl]);

+    } else {

+        if (LADSPA_IS_HINT_INTEGER(h->HintDescriptor)) {

+            av_log(ctx, level, "<int>");

+

+            if (LADSPA_IS_HINT_BOUNDED_BELOW(h->HintDescriptor))

+                av_log(ctx, level, ", min: %i", (int)h->LowerBound);

+

+            if (LADSPA_IS_HINT_BOUNDED_ABOVE(h->HintDescriptor))

+                av_log(ctx, level, ", max: %i", (int)h->UpperBound);

+

+            if (print)

+                av_log(ctx, level, " (value %d)", (int)values[ctl]);

+            else if (LADSPA_IS_HINT_HAS_DEFAULT(h->HintDescriptor))

+                av_log(ctx, level, " (default %d)", (int)values[ctl]);

+        } else {

+            av_log(ctx, level, "<float>");

+

+            if (LADSPA_IS_HINT_BOUNDED_BELOW(h->HintDescriptor))

+                av_log(ctx, level, ", min: %f", h->LowerBound);

+

+            if (LADSPA_IS_HINT_BOUNDED_ABOVE(h->HintDescriptor))

+                av_log(ctx, level, ", max: %f", h->UpperBound);

+

+            if (print)

+                av_log(ctx, level, " (value %f)", values[ctl]);

+            else if (LADSPA_IS_HINT_HAS_DEFAULT(h->HintDescriptor))

+                av_log(ctx, level, " (default %f)", values[ctl]);

+        }

+

+        if (LADSPA_IS_HINT_SAMPLE_RATE(h->HintDescriptor))

+            av_log(ctx, level, ", multiple of sample rate");

+

+        if (LADSPA_IS_HINT_LOGARITHMIC(h->HintDescriptor))

+            av_log(ctx, level, ", logarithmic scale");

+    }

+

+    av_log(ctx, level, "]\n");

+}

+

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

+{

+    AVFilterContext *ctx = inlink->dst;

+    LADSPAContext *s = ctx->priv;

+    AVFrame *out;

+    int i, h;

+

+    if (!s->nb_outputs ||

+        (av_frame_is_writable(in) && s->nb_inputs == s->nb_outputs &&

+        !(s->desc->Properties & LADSPA_PROPERTY_INPLACE_BROKEN))) {

+        out = in;

+    } else {

+        out = ff_get_audio_buffer(ctx->outputs[0], in->nb_samples);

+        if (!out) {

+            av_frame_free(&in);

+            return AVERROR(ENOMEM);

+        }

+        av_frame_copy_props(out, in);

+    }

+

+    for (h = 0; h < s->nb_handles; h++) {

+        for (i = 0; i < s->nb_inputs; i++) {

+            s->desc->connect_port(s->handles[h], s->ipmap[i],

+                                  (LADSPA_Data*)in->extended_data[i]);

+        }

+

+        for (i = 0; i < s->nb_outputs; i++) {

+            s->desc->connect_port(s->handles[h], s->opmap[i],

+                                  (LADSPA_Data*)out->extended_data[i]);

+        }

+

+        s->desc->run(s->handles[h], in->nb_samples);

+    }

+

+    for (i = 0; i < s->nb_outputcontrols; i++)

+        print_ctl_info(ctx, AV_LOG_VERBOSE, s, i, s->ocmap, s->octlv, 1);

+

+    if (out != in)

+        av_frame_free(&in);

+

+    return ff_filter_frame(ctx->outputs[0], out);

+}

+

+static int request_frame(AVFilterLink *outlink)

+{

+    AVFilterContext *ctx = outlink->src;

+    LADSPAContext *s = ctx->priv;

+    AVFrame *out;

+    int64_t t;

+    int i;

+

+    if (ctx->nb_inputs)

+        return ff_request_frame(ctx->inputs[0]);

+

+    t = av_rescale(s->pts, AV_TIME_BASE, s->sample_rate);

+    if (s->duration >= 0 && t >= s->duration)

+        return AVERROR_EOF;

+

+    out = ff_get_audio_buffer(outlink, s->nb_samples);

+    if (!out)

+        return AVERROR(ENOMEM);

+

+    for (i = 0; i < s->nb_outputs; i++)

+        s->desc->connect_port(s->handles[0], s->opmap[i],

+                (LADSPA_Data*)out->extended_data[i]);

+

+    s->desc->run(s->handles[0], s->nb_samples);

+

+    for (i = 0; i < s->nb_outputcontrols; i++)

+        print_ctl_info(ctx, AV_LOG_INFO, s, i, s->ocmap, s->octlv, 1);

+

+    out->sample_rate = s->sample_rate;

+    out->pts         = s->pts;

+    s->pts          += s->nb_samples;

+

+    return ff_filter_frame(outlink, out);

+}

+

+static void set_default_ctl_value(LADSPAContext *s, int ctl,

+                                  unsigned long *map, LADSPA_Data *values)

+{

+    const LADSPA_PortRangeHint *h = s->desc->PortRangeHints + map[ctl];

+    const LADSPA_Data lower = h->LowerBound;

+    const LADSPA_Data upper = h->UpperBound;

+

+    if (LADSPA_IS_HINT_DEFAULT_MINIMUM(h->HintDescriptor)) {

+        values[ctl] = lower;

+    } else if (LADSPA_IS_HINT_DEFAULT_MAXIMUM(h->HintDescriptor)) {

+        values[ctl] = upper;

+    } else if (LADSPA_IS_HINT_DEFAULT_0(h->HintDescriptor)) {

+        values[ctl] = 0.0;

+    } else if (LADSPA_IS_HINT_DEFAULT_1(h->HintDescriptor)) {

+        values[ctl] = 1.0;

+    } else if (LADSPA_IS_HINT_DEFAULT_100(h->HintDescriptor)) {

+        values[ctl] = 100.0;

+    } else if (LADSPA_IS_HINT_DEFAULT_440(h->HintDescriptor)) {

+        values[ctl] = 440.0;

+    } else if (LADSPA_IS_HINT_DEFAULT_LOW(h->HintDescriptor)) {

+        if (LADSPA_IS_HINT_LOGARITHMIC(h->HintDescriptor))

+            values[ctl] = exp(log(lower) * 0.75 + log(upper) * 0.25);

+        else

+            values[ctl] = lower * 0.75 + upper * 0.25;

+    } else if (LADSPA_IS_HINT_DEFAULT_MIDDLE(h->HintDescriptor)) {

+        if (LADSPA_IS_HINT_LOGARITHMIC(h->HintDescriptor))

+            values[ctl] = exp(log(lower) * 0.5 + log(upper) * 0.5);

+        else

+            values[ctl] = lower * 0.5 + upper * 0.5;

+    } else if (LADSPA_IS_HINT_DEFAULT_HIGH(h->HintDescriptor)) {

+        if (LADSPA_IS_HINT_LOGARITHMIC(h->HintDescriptor))

+            values[ctl] = exp(log(lower) * 0.25 + log(upper) * 0.75);

+        else

+            values[ctl] = lower * 0.25 + upper * 0.75;

+    }

+}

+

+static int connect_ports(AVFilterContext *ctx, AVFilterLink *link)

+{

+    LADSPAContext *s = ctx->priv;

+    int i, j;

+

+    s->nb_handles = s->nb_inputs == 1 && s->nb_outputs == 1 ? link->channels : 1;

+    s->handles    = av_calloc(s->nb_handles, sizeof(*s->handles));

+    if (!s->handles)

+        return AVERROR(ENOMEM);

+

+    for (i = 0; i < s->nb_handles; i++) {

+        s->handles[i] = s->desc->instantiate(s->desc, link->sample_rate);

+        if (!s->handles[i]) {

+            av_log(ctx, AV_LOG_ERROR, "Could not instantiate plugin.\n");

+            return AVERROR_EXTERNAL;

+        }

+

+        // Connect the input control ports

+        for (j = 0; j < s->nb_inputcontrols; j++)

+            s->desc->connect_port(s->handles[i], s->icmap[j], s->ictlv + j);

+

+        // Connect the output control ports

+        for (j = 0; j < s->nb_outputcontrols; j++)

+            s->desc->connect_port(s->handles[i], s->ocmap[j], &s->octlv[j]);

+

+        if (s->desc->activate)

+            s->desc->activate(s->handles[i]);

+    }

+

+    av_log(ctx, AV_LOG_DEBUG, "handles: %d\n", s->nb_handles);

+

+    return 0;

+}

+

+static int config_input(AVFilterLink *inlink)

+{

+    AVFilterContext *ctx = inlink->dst;

+

+    return connect_ports(ctx, inlink);

+}

+

+static int config_output(AVFilterLink *outlink)

+{

+    AVFilterContext *ctx = outlink->src;

+    int ret;

+

+    if (ctx->nb_inputs) {

+        AVFilterLink *inlink = ctx->inputs[0];

+

+        outlink->format      = inlink->format;

+        outlink->sample_rate = inlink->sample_rate;

+

+        ret = 0;

+    } else {

+        LADSPAContext *s = ctx->priv;

+

+        outlink->sample_rate = s->sample_rate;

+        outlink->time_base   = (AVRational){1, s->sample_rate};

+

+        ret = connect_ports(ctx, outlink);

+    }

+

+    return ret;

+}

+

+static void count_ports(const LADSPA_Descriptor *desc,

+                        unsigned long *nb_inputs, unsigned long *nb_outputs)

+{

+    LADSPA_PortDescriptor pd;

+    int i;

+

+    for (i = 0; i < desc->PortCount; i++) {

+        pd = desc->PortDescriptors[i];

+

+        if (LADSPA_IS_PORT_AUDIO(pd)) {

+            if (LADSPA_IS_PORT_INPUT(pd)) {

+                (*nb_inputs)++;

+            } else if (LADSPA_IS_PORT_OUTPUT(pd)) {

+                (*nb_outputs)++;

+            }

+        }

+    }

+}

+

+static void *try_load(const char *dir, const char *soname)

+{

+    char *path = av_asprintf("%s/%s.so", dir, soname);

+    void *ret = NULL;

+

+    if (path) {

+        ret = dlopen(path, RTLD_LOCAL|RTLD_NOW);

+        av_free(path);

+    }

+

+    return ret;

+}

+

+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_PortRangeHint *h;

+        LADSPA_Data val;

+

+        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 (i < 0 || i >= s->nb_inputcontrols) {

+            av_log(ctx, AV_LOG_ERROR,

+                   "Control c%d is out of range [0 - %lu].\n",

+                   i, s->nb_inputcontrols);

+            return AVERROR(EINVAL);

+        }

+

+        h = (LADSPA_PortRangeHint *)s->desc->PortRangeHints + s->icmap[i];

+        s->ictlv[i]           = val;

+        s->ctl_needs_value[i] = 0;

+        if (LADSPA_IS_HINT_BOUNDED_BELOW(h->HintDescriptor) &&

+                val < h->LowerBound) {

+            av_log(ctx, AV_LOG_ERROR,

+                   "%s: input control c%d is below lower boundary of %0.4f.\n",

+                   s->desc->Label, i, h->LowerBound);

+            return AVERROR(EINVAL);

+        }

+        if (LADSPA_IS_HINT_BOUNDED_ABOVE(h->HintDescriptor) &&

+                val > h->UpperBound) {

+            av_log(ctx, AV_LOG_ERROR,

+                   "%s: input control c%d is above upper boundary of %0.4f.\n",

+                   s->desc->Label, i, h->UpperBound);

+            return AVERROR(EINVAL);

+        }

+    }

+

+    // 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;

+}

+

+static int query_formats(AVFilterContext *ctx)

+{

+    LADSPAContext *s = ctx->priv;

+    AVFilterFormats *formats;

+    AVFilterChannelLayouts *layouts;

+    static const enum AVSampleFormat sample_fmts[] = {

+        AV_SAMPLE_FMT_FLTP, AV_SAMPLE_FMT_NONE };

+

+    formats = ff_make_format_list(sample_fmts);

+    if (!formats)

+        return AVERROR(ENOMEM);

+    ff_set_common_formats(ctx, formats);

+

+    if (s->nb_inputs) {

+        formats = ff_all_samplerates();

+        if (!formats)

+            return AVERROR(ENOMEM);

+

+        ff_set_common_samplerates(ctx, formats);

+    } else {

+        int sample_rates[] = { s->sample_rate, -1 };

+

+        ff_set_common_samplerates(ctx, ff_make_format_list(sample_rates));

+    }

+

+    if (s->nb_inputs == 1 && s->nb_outputs == 1) {

+        // We will instantiate multiple LADSPA_Handle, one over each channel

+        layouts = ff_all_channel_layouts();

+        if (!layouts)

+            return AVERROR(ENOMEM);

+

+        ff_set_common_channel_layouts(ctx, layouts);

+    } else {

+        if (s->nb_inputs >= 1) {

+            AVFilterLink *inlink = ctx->inputs[0];

+            int64_t inlayout = FF_COUNT2LAYOUT(s->nb_inputs);

+

+            layouts = NULL;

+            ff_add_channel_layout(&layouts, inlayout);

+            ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts);

+        }

+

+        if (s->nb_outputs >= 1) {

+            AVFilterLink *outlink = ctx->outputs[0];

+            int64_t outlayout = FF_COUNT2LAYOUT(s->nb_outputs);

+

+            layouts = NULL;

+            ff_add_channel_layout(&layouts, outlayout);

+            ff_channel_layouts_ref(layouts, &outlink->in_channel_layouts);

+        }

+    }

+

+    return 0;

+}

+

+static av_cold void uninit(AVFilterContext *ctx)

+{

+    LADSPAContext *s = ctx->priv;

+    int i;

+

+    for (i = 0; i < s->nb_handles; i++) {

+        if (s->desc->deactivate)

+            s->desc->deactivate(s->handles[i]);

+        if (s->desc->cleanup)

+            s->desc->cleanup(s->handles[i]);

+    }

+

+    if (s->dl_handle)

+        dlclose(s->dl_handle);

+

+    av_freep(&s->ipmap);

+    av_freep(&s->opmap);

+    av_freep(&s->icmap);

+    av_freep(&s->ocmap);

+    av_freep(&s->ictlv);

+    av_freep(&s->octlv);

+    av_freep(&s->handles);

+    av_freep(&s->ctl_needs_value);

+

+    if (ctx->nb_inputs)

+        av_freep(&ctx->input_pads[0].name);

+}

+

+static const AVFilterPad ladspa_outputs[] = {

+    {

+        .name          = "default",

+        .type          = AVMEDIA_TYPE_AUDIO,

+        .config_props  = config_output,

+        .request_frame = request_frame,

+    },

+    { NULL }

+};

+

+AVFilter avfilter_af_ladspa = {

+    .name          = "ladspa",

+    .description   = NULL_IF_CONFIG_SMALL("Apply LADSPA effect."),

+    .priv_size     = sizeof(LADSPAContext),

+    .priv_class    = &ladspa_class,

+    .init          = init,

+    .uninit        = uninit,

+    .query_formats = query_formats,

+    .inputs        = 0,

+    .outputs       = ladspa_outputs,

+    .flags         = AVFILTER_FLAG_DYNAMIC_INPUTS,

+};

@@ -87,6 +87,7 @@ void avfilter_register_all(void)

     REGISTER_FILTER(EQUALIZER,      equalizer,      af);

     REGISTER_FILTER(HIGHPASS,       highpass,       af);

     REGISTER_FILTER(JOIN,           join,           af);

+    REGISTER_FILTER(LADSPA,         ladspa,         af);

     REGISTER_FILTER(LOWPASS,        lowpass,        af);

     REGISTER_FILTER(PAN,            pan,            af);

     REGISTER_FILTER(RESAMPLE,       resample,       af);

@@ -30,8 +30,8 @@

 #include "libavutil/avutil.h"

 #define LIBAVFILTER_VERSION_MAJOR  3

-#define LIBAVFILTER_VERSION_MINOR  86

-#define LIBAVFILTER_VERSION_MICRO 102

+#define LIBAVFILTER_VERSION_MINOR  87

+#define LIBAVFILTER_VERSION_MICRO 100

 #define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \

                                                LIBAVFILTER_VERSION_MINOR, \