lavfi: fix null checking in avfilter_config_links()

[ffmpeg] / libavresample / resample.c

diff --git a/libavresample/resample.c b/libavresample/resample.c
index 381d67371741ace177956f0ed383232f3bb8b2e4..69c9bab89329989d874523a8591137e93d549f3a 100644 (file)
--- a/libavresample/resample.c
+++ b/libavresample/resample.c
@@ -23,6 +23,7 @@
 #include "libavutil/libm.h"
 #include "libavutil/log.h"
 #include "internal.h"
+#include "resample.h"
 #include "audio_data.h"
 
 struct ResampleContext {
@@ -255,10 +256,12 @@ int avresample_set_compensation(AVAudioResampleContext *avr, int sample_delta,
     if (!compensation_distance && sample_delta)
         return AVERROR(EINVAL);
 
-    /* if resampling was not enabled previously, re-initialize the
-       AVAudioResampleContext and force resampling */
     if (!avr->resample_needed) {
+#if FF_API_RESAMPLE_CLOSE_OPEN
+        /* if resampling was not enabled previously, re-initialize the
+           AVAudioResampleContext and force resampling */
         int fifo_samples;
+        int restore_matrix = 0;
         double matrix[AVRESAMPLE_MAX_CHANNELS * AVRESAMPLE_MAX_CHANNELS] = { 0 };
 
         /* buffer any remaining samples in the output FIFO before closing */
@@ -274,9 +277,12 @@ int avresample_set_compensation(AVAudioResampleContext *avr, int sample_delta,
                 goto reinit_fail;
         }
         /* save the channel mixing matrix */
-        ret = avresample_get_matrix(avr, matrix, AVRESAMPLE_MAX_CHANNELS);
-        if (ret < 0)
-            goto reinit_fail;
+        if (avr->am) {
+            ret = avresample_get_matrix(avr, matrix, AVRESAMPLE_MAX_CHANNELS);
+            if (ret < 0)
+                goto reinit_fail;
+            restore_matrix = 1;
+        }
 
         /* close the AVAudioResampleContext */
         avresample_close(avr);
@@ -284,9 +290,11 @@ int avresample_set_compensation(AVAudioResampleContext *avr, int sample_delta,
         avr->force_resampling = 1;
 
         /* restore the channel mixing matrix */
-        ret = avresample_set_matrix(avr, matrix, AVRESAMPLE_MAX_CHANNELS);
-        if (ret < 0)
-            goto reinit_fail;
+        if (restore_matrix) {
+            ret = avresample_set_matrix(avr, matrix, AVRESAMPLE_MAX_CHANNELS);
+            if (ret < 0)
+                goto reinit_fail;
+        }
 
         /* re-open the AVAudioResampleContext */
         ret = avresample_open(avr);
@@ -301,6 +309,10 @@ int avresample_set_compensation(AVAudioResampleContext *avr, int sample_delta,
                 goto reinit_fail;
             ff_audio_data_free(&fifo_buf);
         }
+#else
+        av_log(avr, AV_LOG_ERROR, "Unable to set resampling compensation\n");
+        return AVERROR(EINVAL);
+#endif
     }
     c = avr->resample;
     c->compensation_distance = compensation_distance;