@@ -676,3 +676,27 @@ int swr_convert(struct SwrContext *s, uint8_t *out_arg[SWR_CH_MAX], int out_coun

     }

 }

+int swr_inject_silence(struct SwrContext *s, int count){

+    int ret, i;

+    AudioData silence = s->out;

+    uint8_t *tmp_arg[SWR_CH_MAX];

+

+    if(count <= 0)

+        return 0;

+

+    silence.count = 0;

+    silence.data  = NULL;

+    if((ret=realloc_audio(&silence, count))<0)

+        return ret;

+

+    if(silence.planar) for(i=0; i<silence.ch_count; i++) {

+        memset(silence.ch[i], silence.bps==1 ? 0x80 : 0, count*silence.bps);

+    } else

+        memset(silence.ch[0], silence.bps==1 ? 0x80 : 0, count*silence.bps*silence.ch_count);

+

+    reversefill_audiodata(&silence, tmp_arg);

+    av_log(s, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", count);

+    ret = swr_convert(s, NULL, 0, (const uint8_t**)tmp_arg, count);

+    av_freep(&silence.data);

+    return ret;

+}

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

 #include "libavutil/samplefmt.h"

 #define LIBSWRESAMPLE_VERSION_MAJOR 0

-#define LIBSWRESAMPLE_VERSION_MINOR 12

+#define LIBSWRESAMPLE_VERSION_MINOR 13

 #define LIBSWRESAMPLE_VERSION_MICRO 100

 #define LIBSWRESAMPLE_VERSION_INT  AV_VERSION_INT(LIBSWRESAMPLE_VERSION_MAJOR, \

@@ -159,6 +159,11 @@ int swr_set_channel_mapping(struct SwrContext *s, const int *channel_map);

 int swr_set_matrix(struct SwrContext *s, const double *matrix, int stride);

 /**

+ * Injects the specified number of silence samples.

+ */

+int swr_inject_silence(struct SwrContext *s, int count);

+

+/**

  * Gets the delay the next input sample will experience relative to the next output sample.

  *

  * Swresample can buffer data if more input has been provided than available