Improve libaom decoder error handling consistency

Author: rootvector2

src/codec_aom.c

@@ -101,6 +101,10 @@ static avifBool aomCodecGetNextImage(struct avifCodec * codec,
     assert(sample);
 
     aom_codec_iface_t * const decoderInterface = aom_codec_av1_dx();
+    if (!decoderInterface) {
+        avifDiagnosticsPrintf(codec->diag, "aom_codec_av1_dx() failed");
+        return AVIF_FALSE;
+    }
     struct aom_codec_stream_info streamInfo = { 0 };
     aom_codec_err_t err = aom_codec_peek_stream_info(decoderInterface, sample->data.data, sample->data.size, &streamInfo);
     if (err != AOM_CODEC_OK) {
@@ -127,11 +131,21 @@ static avifBool aomCodecGetNextImage(struct avifCodec * codec,
         cfg.allow_lowbitdepth = 1;
 
         if (aom_codec_dec_init(&codec->internal->decoder, decoderInterface, &cfg, 0)) {
+            const char * error_detail = aom_codec_error_detail(&codec->internal->decoder);
+            avifDiagnosticsPrintf(codec->diag,
+                                  "aom_codec_dec_init() failed: %s: %s",
+                                  aom_codec_error(&codec->internal->decoder),
+                                  error_detail ? error_detail : "no error detail");
             return AVIF_FALSE;
         }
         codec->internal->decoderInitialized = AVIF_TRUE;
 
         if (aom_codec_control(&codec->internal->decoder, AV1D_SET_OUTPUT_ALL_LAYERS, codec->allLayers)) {
+            const char * error_detail = aom_codec_error_detail(&codec->internal->decoder);
+            avifDiagnosticsPrintf(codec->diag,
+                                  "aom_codec_control(AV1D_SET_OUTPUT_ALL_LAYERS) failed: %s: %s",
+                                  aom_codec_error(&codec->internal->decoder),
+                                  error_detail ? error_detail : "no error detail");
             return AVIF_FALSE;
         }
         if (aom_codec_control(&codec->internal->decoder, AV1D_SET_OPERATING_POINT, codec->operatingPoint)) {
@@ -183,7 +197,6 @@ static avifBool aomCodecGetNextImage(struct avifCodec * codec,
             return AVIF_FALSE;
         }
     }
-
     avifBool isColor = !alpha;
     if (isColor) {
         // Color (YUV) planes - set image to correct size / format, fill color