@@ -10,6 +10,7 @@ version next:

 - dv: add timecode to metadata

 - thumbnail video filter

 - XML output in ffprobe

+- asplit audio filter

 version 0.9:

@@ -224,6 +224,19 @@ expressed in the form "[@var{c0} @var{c1} @var{c2} @var{c3} @var{c4} @var{c5}

 @var{c6} @var{c7}]"

 @end table

+@section asplit

+

+Pass on the input audio to two outputs. Both outputs are identical to

+the input audio.

+

+For example:

+@example

+[in] asplit[out0], showaudio[out1]

+@end example

+

+will create two separate outputs from the same input, one cropped and

+one padded.

+

 @section earwax

 Make audio easier to listen to on headphones.

@@ -29,6 +29,7 @@ OBJS-$(CONFIG_AFORMAT_FILTER)                += af_aformat.o

 OBJS-$(CONFIG_ANULL_FILTER)                  += af_anull.o

 OBJS-$(CONFIG_ARESAMPLE_FILTER)              += af_aresample.o

 OBJS-$(CONFIG_ASHOWINFO_FILTER)              += af_ashowinfo.o

+OBJS-$(CONFIG_ASPLIT_FILTER)                 += af_asplit.o

 OBJS-$(CONFIG_EARWAX_FILTER)                 += af_earwax.o

 OBJS-$(CONFIG_PAN_FILTER)                    += af_pan.o

 OBJS-$(CONFIG_VOLUME_FILTER)                 += af_volume.o

new file mode 100644

@@ -0,0 +1,55 @@

+/*

+ * Copyright (c) 2011 Stefano Sabatini

+ *

+ * 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

+ * audio splitter

+ */

+

+#include "avfilter.h"

+

+static void filter_samples(AVFilterLink *inlink, AVFilterBufferRef *insamples)

+{

+    avfilter_filter_samples(inlink->dst->outputs[0],

+                            avfilter_ref_buffer(insamples, ~AV_PERM_WRITE));

+    avfilter_filter_samples(inlink->dst->outputs[1],

+                            avfilter_ref_buffer(insamples, ~AV_PERM_WRITE));

+    avfilter_unref_buffer(insamples);

+}

+

+AVFilter avfilter_af_asplit = {

+    .name        = "asplit",

+    .description = NULL_IF_CONFIG_SMALL("Pass on the audio input to two outputs."),

+

+    .inputs = (const AVFilterPad[]) {

+        { .name             = "default",

+          .type             = AVMEDIA_TYPE_AUDIO,

+          .get_audio_buffer = avfilter_null_get_audio_buffer,

+          .filter_samples   = filter_samples, },

+        { .name = NULL}

+    },

+    .outputs = (const AVFilterPad[]) {

+        { .name             = "output1",

+          .type             = AVMEDIA_TYPE_AUDIO, },

+        { .name             = "output2",

+          .type             = AVMEDIA_TYPE_AUDIO, },

+        { .name = NULL}

+    },

+};

@@ -39,6 +39,7 @@ void avfilter_register_all(void)

     REGISTER_FILTER (ANULL,       anull,       af);

     REGISTER_FILTER (ARESAMPLE,   aresample,   af);

     REGISTER_FILTER (ASHOWINFO,   ashowinfo,   af);

+    REGISTER_FILTER (ASPLIT,      asplit,      af);

     REGISTER_FILTER (EARWAX,      earwax,      af);

     REGISTER_FILTER (PAN,         pan,         af);

     REGISTER_FILTER (VOLUME,      volume,      af);

@@ -30,7 +30,7 @@

 #include "libavcodec/avcodec.h"

 #define LIBAVFILTER_VERSION_MAJOR  2

-#define LIBAVFILTER_VERSION_MINOR 54

+#define LIBAVFILTER_VERSION_MINOR 55

 #define LIBAVFILTER_VERSION_MICRO 100

 #define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \