avutil/tests/audio_fifo.c: pass by reference for efficiency and change datatype to const

Signed-off-by: Thomas Turner <thomastdt@googlemail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavutil/tests/audio_fifo.c

@@ -29,7 +29,7 @@ typedef struct TestStruct {
     const enum AVSampleFormat format;
     const int nb_ch;
     void const *data_planes[MAX_CHANNELS];
-    int nb_samples_pch;
+    const int nb_samples_pch;
 } TestStruct;
 
 static const uint8_t data_U8 [] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11                        };
@@ -102,55 +102,55 @@ static int read_samples_from_audio_fifo(AVAudioFifo* afifo, void ***output, int
     return av_audio_fifo_read(afifo, *output, nb_samples);
 }
 
-static int write_samples_to_audio_fifo(AVAudioFifo* afifo, const TestStruct test_sample,
+static int write_samples_to_audio_fifo(AVAudioFifo* afifo, const TestStruct *test_sample,
                                        int nb_samples, int offset)
 {
     int offset_size, i;
     void *data_planes[MAX_CHANNELS];
 
-    if(nb_samples > test_sample.nb_samples_pch - offset){
+    if(nb_samples > test_sample->nb_samples_pch - offset){
         return 0;
     }
-    if(offset >= test_sample.nb_samples_pch){
+    if(offset >= test_sample->nb_samples_pch){
         return 0;
     }
     offset_size  = offset * afifo->sample_size;
 
     for (i = 0; i < afifo->nb_buffers ; ++i){
-        data_planes[i] = (uint8_t*)test_sample.data_planes[i] + offset_size;
+        data_planes[i] = (uint8_t*)test_sample->data_planes[i] + offset_size;
     }
 
     return av_audio_fifo_write(afifo, data_planes, nb_samples);
 }
 
-static void test_function(const TestStruct test_sample)
+static void test_function(const TestStruct *test_sample)
 {
     int ret, i;
     void **output_data  = NULL;
-    AVAudioFifo *afifo  = av_audio_fifo_alloc(test_sample.format, test_sample.nb_ch,
-                                            test_sample.nb_samples_pch);
+    AVAudioFifo *afifo  = av_audio_fifo_alloc(test_sample->format, test_sample->nb_ch,
+                                            test_sample->nb_samples_pch);
     if (!afifo) {
         ERROR("ERROR: av_audio_fifo_alloc returned NULL!");
     }
-    ret = write_samples_to_audio_fifo(afifo, test_sample, test_sample.nb_samples_pch, 0);
+    ret = write_samples_to_audio_fifo(afifo, test_sample, test_sample->nb_samples_pch, 0);
     if (ret < 0){
         ERROR("ERROR: av_audio_fifo_write failed!");
     }
     printf("written: %d\n", ret);
 
-    ret = write_samples_to_audio_fifo(afifo, test_sample, test_sample.nb_samples_pch, 0);
+    ret = write_samples_to_audio_fifo(afifo, test_sample, test_sample->nb_samples_pch, 0);
     if (ret < 0){
         ERROR("ERROR: av_audio_fifo_write failed!");
     }
     printf("written: %d\n", ret);
     printf("remaining samples in audio_fifo: %d\n\n", av_audio_fifo_size(afifo));
 
-    ret = read_samples_from_audio_fifo(afifo, &output_data, test_sample.nb_samples_pch);
+    ret = read_samples_from_audio_fifo(afifo, &output_data, test_sample->nb_samples_pch);
     if (ret < 0){
         ERROR("ERROR: av_audio_fifo_read failed!");
     }
     printf("read: %d\n", ret);
-    print_audio_bytes(&test_sample, output_data, ret);
+    print_audio_bytes(test_sample, output_data, ret);
     printf("remaining samples in audio_fifo: %d\n\n", av_audio_fifo_size(afifo));
 
     /* test av_audio_fifo_peek */
@@ -159,7 +159,7 @@ static void test_function(const TestStruct test_sample)
         ERROR("ERROR: av_audio_fifo_peek failed!");
     }
     printf("peek:\n");
-    print_audio_bytes(&test_sample, output_data, ret);
+    print_audio_bytes(test_sample, output_data, ret);
     printf("\n");
 
     /* test av_audio_fifo_peek_at */
@@ -170,7 +170,7 @@ static void test_function(const TestStruct test_sample)
             ERROR("ERROR: av_audio_fifo_peek_at failed!");
         }
         printf("%d:\n", i);
-        print_audio_bytes(&test_sample, output_data, ret);
+        print_audio_bytes(test_sample, output_data, ret);
     }
     printf("\n");
 
@@ -194,7 +194,7 @@ int main(void)
 
     for (t = 0; t < tests; ++t){
         printf("\nTEST: %d\n\n", t+1);
-        test_function(test_struct[t]);
+        test_function(&test_struct[t]);
     }
     return 0;
 }